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Die And Punch | Interview Question and Answers</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/press-working-die-and-punch-interview-question-and-answers/">Press Working &#8211; Die And Punch | Interview Question and Answers</a></p></header><div class="excerpt"><p>Press Working - Die And Punch | Interview Question and Answers
Press Working - Die And Punch | Interview , Viva , Oral Question and Answers  1. How is cutting operation carried out?  The work...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/press-working-die-and-punch-interview-question-and-answers/" aria-label="View Post: Press Working &#8211; Die And Punch | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Press Working &#8211; Die And Punch | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/press-working-die-and-punch-interview-question-and-answers\/","articleBody":"Press Working - Die And Punch | Interview Question and Answers\r\nPress Working - Die And Punch | Interview , Viva , Oral Question and Answers\r\n\r\n1. How is cutting operation carried out?\r\n\r\nThe work piece is stressed beyond its ultimate strength and cut-off into two pieces.\r\n\r\n2. List out the various cutting operations.\r\n\r\na. Blanking\r\nb. Punching\r\nc. Shearing\r\nd. Parting off\r\n\r\nRead more :\u00a0Classification Of Press Tools Operations related to Sheetmetal\r\n\r\n3. Mention the three different ways of working sheet metal in presses.\r\n\r\na. Shearing\r\nb. Bending\r\nc. Drawing\r\n\r\n4. Classify sheet metal operations\r\n\r\na. Cutting operations\r\nb. Forming operations \r\n\r\n5. State the advantages of press working operations.\r\n\r\na. Material economy\r\nb. High productivity\r\nc. Uniformity of parts\r\nd. Use of less labour.\r\n\r\n6. What are the applications of press working operations?\r\n\r\na. Electronic appliances\r\nb. Steel furniture\r\nc. Coach building\r\nd. Automobile industry\r\n\r\n7. Name some types of forming operations.\r\n\r\na. Bending\r\nb. Drawing\r\nc. Squeezing\r\nd. Embossing\r\n\r\n8. List out the press working terminology.\r\n\r\na. Base\r\nb. Bolster plate\r\nc. Die holder\r\nd. Die\r\ne. Stripper\r\nf. Punch\r\ng. Pitman\r\nh. Stroke\r\ni. Guide pin\r\nj. Back up plate\r\n\r\nRead more ;\u00a0What is Die Cutting | Application of Die Cutting\r\n\r\n9. When will be hydraulically driven presses used?\r\n\r\nWhenever large force and slow speed are required in forming, pressing and drawing operation, hydraulically driven presses are used.\r\n\r\n10. How will you select the proper material for press tools?\r\n\r\na. Hardness\r\nb. Compressive strength \r\nc. Bending strength\r\nd. Toughness\r\n\r\n11. What factors are considered for selecting an appropriate press for a given job?\r\n\r\na. Force required to be cut the metal\r\nb. Die space\r\nc. Size and type of die\r\nd. Stroke length\r\ne. Shut height\r\nf. Type of operation\r\ng. Speed of operation\r\n\r\n12. List down the material used for press working operations.\r\n\r\na. Mild steel\r\nb. Stainless steel\r\nc. Brass\r\nd. Copper\r\ne. Aluminium\r\nf. Hard rubber\r\ng. Fiber\r\n\r\n13. What is a progressive die? When should a progressive die be used?\r\n\r\nA die which is used to perform two or more operations at different stages every time when the ram descends is called progressive die. It is mainly used where the accuracy of the products is maintained.\r\n\r\nprogressive die\r\n\r\n14. Explain the function of bolster plate in press tool.\r\n\r\nThe bolster plate is the thick plate mounted on the base. It is used for locating and supporting the die assembly. It is usually 5 to 12.5 mm thick plate.\r\n\r\n15. What are the methods of holding pilots?\r\n\r\na. Direct pilots\r\nb. Indirect pilots\r\n\r\n16. What are the types of stock stop?\r\n\r\na. Lever or latch type\r\nb. Automatic stop \r\nc. Shoulder stop\r\nd. Starting stop\r\n\r\n17. State the function of a knockout.\r\n\r\nThe function of knockout is to eject or remove the work piece from within the die cavity as the work piece may adhere in the die cavity due to friction.\r\n\r\n18. What is the purpose of pilot?\r\n\r\nPilot is a locating pin chamfered on the front end to facilitate catching and entering the work piece.\r\n\r\n19. List down the various methods of arranging guide pins in the die set.\r\n\r\na. Back-post design\r\nb. Centre-post design\r\nc. Diagonal-post design\r\nd. Four-guide post design\r\n\r\n20. What are the types of die set?\r\n\r\na. Precision die set\r\nb. Commercial die set\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nManufacturing Technology Notes , Articles\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nLatest seminar topic index - Report ,PPT Download\r\n\r\n\r\n\r\n&nbsp;","headline":"Press Working &#8211; Die And Punch | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/05\/progressive-die-300x213.jpg","height":213,"width":300},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal "> <a href="//www.gunkrazy.com/jig-and-fixture-basic-interview-question-and-answers/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/05/jigs-and-fixture-design1-300x227.jpg')"></div><span class="sr-only">link to Jig and Fixture Basic | Interview Question and Answers</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/jig-and-fixture-basic-interview-question-and-answers/">Jig and Fixture Basic | Interview Question and Answers</a></p></header><div class="excerpt"><p>Jig and Fixture Basic | Interview Question and Answers
Jig and Fixture Basic | Interview , viva , oral Question and Answers  Read also ; Locating And Clamping Devices | Interview Question and...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/jig-and-fixture-basic-interview-question-and-answers/" aria-label="View Post: Jig and Fixture Basic | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Jig and Fixture Basic | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/jig-and-fixture-basic-interview-question-and-answers\/","articleBody":"Jig and Fixture Basic | Interview Question and Answers\r\nJig and Fixture Basic | Interview , viva , oral Question and Answers\r\n\r\nRead also ;\u00a0Locating And Clamping Devices | Interview Question and Answers\r\n\r\n1. What is the function of jig bushes?\r\n\r\nDrill bushes are used to guide drills, reamers and other cutting tools into the proper position on the work piece.\r\n\r\n2. What are the two types of press fit bushes?\r\n\r\na. Plain or headless bushes\r\nb. Flanged or headed bushes\r\n\r\n3. Distinguish between the channel and box jigs.\r\n\r\nIn channel jigs, holes are drilled only in face but holes can be drilled on more than face using box jigs.\r\n\r\n4. What are the different types of jigs?\r\n\r\na. Plate jigs\r\nb. Latch jig\r\nc. Channel jig\r\nd. Box jig\r\ne. Angle plate jig\r\nf. Pot jig\r\n\r\nMain Parts Of Jig and Fixture -Jig and Fixture Design\r\n\r\n5. Define sandwich jig.\r\n\r\nThese jigs are a form of plate jig with a back plate. This type of jig is ideal for thin or soft parts that could bend or wrap in another style of jig. Here again, the use of buildings is determined by the number of parts to be made.\r\n\r\n6. What are the standard work holding devices in lathe?\r\n\r\na. Chucks\r\nb. Collets\r\nc. Face plate\r\nd. Mandrels\r\n\r\n7. Mention any four essential features made on milling fixtures.\r\n\r\na. Base\r\nb. Tenon strips\r\nc. Setting block\r\nd. Locating elements\r\n\r\n8. List out the various locators used in fixtures.\r\n\r\na. Cylindrical locating pin\r\nb. Diamond pin locator\r\nc. Screw and dowels\r\n\r\n9. Name any four essential features of a milling fixture.\r\n\r\na. Base\r\nb. Locating elements\r\nc. Setting elements\r\nd. Tenon strips\r\ne. Clamping element\r\n\r\n10. What devices are mainly used to assemble modular elements?\r\n\r\nModular fixturing is a work holding system which uses a series of reusable standard components to build a wide variety of special purpose work holding devices. These types of fixtures are assembled with a variety of standard tooling plates, supports, locating elements, clamping devices and similar units.\r\n\r\nIntroduction and Difference Between Jig And Fixture\r\n\r\n11. What are the important elements of inspection fixtures?\r\n\r\na. Locating element\r\nb. Clamping element\r\nc. Gauging element\r\nd. Auxiliary element\r\n\r\n12. What are the two types of inspection fixtures?\r\n\r\na. In-process inspection fixtures\r\nb. Off-line inspection fixtures\r\n\r\n13. State the use of grinding fixtures.\r\n\r\nSeveral different forms of fixtures are used on grinding machines to locate, hold and support the work piece during the operations.\r\n\r\n14. What are boring fixtures? How do you classify them?\r\n\r\nThis fixture which is used for cutting internal key-ways in pulleys, gears, sprockets, etc is known as key way broaching fixture\r\n\r\n15. What are the various machine tools used for boring?\r\n\r\na. Lathes\r\nb. Drill presses\r\nc. Milling machine\r\nd. Jig boring machine\r\ne. Vertical or horizontal boring mills\r\n\r\njig and Fixture Design\r\n\r\n16. State the classification of boring bars.\r\n\r\na. Stub bar\r\nb. Single-piloted bar\r\nc. Double-piloted bar\r\n\r\n17. What are the different types of broaching operation?\r\n\r\na. Keyway broaching\r\nb. Hole broaching\r\nc. Gear broaching \r\n\r\n18. What are fixtures?\r\n\r\nSome type of tooling used in positioning parts relative to each other for fabricating purposes are commonly referred to as fixtures.\r\n\r\n19. When slip bushes are used?\r\n\r\nSlip bushes are mainly used when a hole in the work piece requires two operations. Ex: performing both drilling and reaming in a same jig plate.\r\n\r\n20. What is the use of tack welding fixture?\r\n\r\nTack welding fixtures are used to locate the components of an element in their correct relationship with proper clamps while a welder tacks them together prior to their final welding.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nJig and Fixture (Work Holding) Projects\r\nManufacturing Technology Notes , Articles\r\nLatest seminar topic index - Report ,PPT Download\r\nMachine Tool , Manufacturing Projects List - Abstract , Report\r\n\r\n\r\n\r\n&nbsp;","headline":"Jig and Fixture Basic | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/05\/jigs-and-fixture-design1-300x227.jpg","height":227,"width":300},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/locating-and-clamping-devices-interview-question-and-answers/">Locating And Clamping Devices | Interview Question and Answers</a></p></header><div class="excerpt"><p>Locating And Clamping Devices | Interview Question and Answers
Locating And Clamping Devices | Interview , viva , oral Question and Answers  1. Define the term Tool design.  Tool design is the...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/locating-and-clamping-devices-interview-question-and-answers/" aria-label="View Post: Locating And Clamping Devices | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Locating And Clamping Devices | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/locating-and-clamping-devices-interview-question-and-answers\/","articleBody":"Locating And Clamping Devices | Interview Question and Answers\r\nLocating And Clamping Devices | Interview , viva , oral Question and Answers\r\n\r\n1. Define the term Tool design.\r\n\r\nTool design is the process of designing and developing the tools, methods, and techniques necessary to improve manufacturing efficiency and productivity.\r\n\r\n2. Name the various operations that can be performed using Jig and Fixture.\r\n\r\nJig is usually lighter in construction. Jigs are used on drilling, reaming, tapping and counter boring operation.\r\n\r\n3. How are the supporting loading surfaces made?\r\n\r\nLoading and supporting surface usually made of hardened material and also it should be renewable wherever possible.\r\n\r\n4. What are production devices?\r\n\r\nProduction devices are generally work holding devices such as work holders with\/without tool guiding\/setting arrangement. These are generally called as jigs and fixture\r\n\r\n5. Define jig.\r\n\r\nA jig may be defined as a work holding device which locates and holds the component for a specific operation. It is also provided with tool guiding elements.\r\n\r\n6. What are inspection devices?\r\n\r\nInspection devices are used to check the accuracy of the machined components. It facilitates the interchangeability and uniformity of the produced components.\r\n\r\n7. State the purpose of jigs and fixtures.\r\n\r\nJigs and fixtures are the devices which are designed for holding, supporting and locating the work piece and to guide the tools.\r\n\r\n8. State the use of jigs and fixtures.\r\n\r\nThese devices are used to produce a repetitive type of work piece with \u201czero defects\u201d. But these are economical in mass production only. Jigs and fixtures are designed to save production time, to maintain dimensional accuracy, to facilitate\r\nquick and interchangeable assembly.\r\n\r\nRead More :\u00a0Jig and fixture ( Clamping and Holding ) Projects For Mechanical Engineers\r\n\r\njig and Fixture clamping and holding projects\r\n\r\n9. Classify the clamping devices\r\n\r\na. Mechanical actuating clamps\r\nb. Power clamps\r\n\r\n10. Mention any four types of mechanical actuating clamps.\r\n\r\na. Screw clamps\r\nb. Strap clamps\r\nc. Latch clamps\r\nd. Wedge or key clamps\r\n\r\n11. Define stack clamping.\r\n\r\nIt is also called as a heel clamping. It consists of a robust plate or strap, centre stud and a heel pin. When the clamping nut is unscrewed, the clamp will be automatically pushed upwards by the spring to make the work piece free. Then the\r\nclamp is rotated in anti clockwise direction and the work piece is removed\r\n\r\n12. List out some of the power clamping.\r\n\r\na. Hydraulic clamps\r\nb. Pneumatic clamps\r\n\r\n13. What is the primary function of a linear bushing.\r\n\r\nThese bushes are used to guide both renewable and slip bushes and sometimes they also used as a guide to tools.\r\n\r\n14. List the standard parts used in jigs and fixtures fabrication.\r\n\r\na. Bases\r\nb. Rest buttons\r\nc. Ping\r\nd. Feet\r\ne. Lift rings\r\nf. Drill bushes\r\ng. Threaded fasteners\r\nh. Clamps and pressure feet\r\n\r\n15. Name some materials commonly used in jigs and fixtures.\r\n\r\na. High speed steel\r\nb. Die steel\r\nc. Carbon steel\r\nd. Collect steel\r\ne. Oil Hardening Non-shrinking tool steel\r\nf. Cast iron\r\ng. Nylon or fiber\r\nh. High tensile steel\r\n\r\n16. What are the advantages of conical locator?\r\n\r\nConical locator are preferred over the cylindrical locators where it is necessary to accommodate variation in the hole diameters of the work piece without affecting the accuracy in location.\r\n\r\n17. Mention the locating methods.\r\n\r\na. Pin and Button locators\r\nb. V-Locators\r\nc. Bush locators\r\nd. Nest or Cavity locators\r\n\r\n18. What are the essential features of jigs?\r\n\r\na. Reduction of idle time\r\nb. Cleanliness\r\nc. Provision for coolant\r\nd. Hardened surface\r\ne. Fool proofing\r\nf. Position of clamps\r\ng. Rigidity and stability\r\nh. Safety\r\n\r\nRead more ;\u00a0Main Parts Of Jig and Fixture- Jig and Fixture Design\r\n\r\n19. What is meant by 3-2-1 principle of location?\r\n\r\nAccording to this principle, a work piece can be completely restrained by providing three location points in one plane, two location points in the second plane and one location point in the third plane. Therefore it is called 3-2-1 principle of location.\r\n\r\nRead More :\u00a03-2-1 principle used for jig and Fixture Locating Method\r\n\r\n20. What are the elements of jigs and fixtures?\r\n\r\na. Locating elements\r\nb. Clamping elements\r\nc. Tool guiding and setting elements.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nJig and Fixture (Work Holding) Projects\r\nTechnical Mechanical Interview Question and Answers\r\nManufacturing Technology Notes , Articles\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\nLatest seminar topic index - Report ,PPT Download\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Locating And Clamping Devices | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/part-programming-and-cnc-machine-interview-question-and-answers/">Part programming and CNC Machine | Interview Question and Answers</a></p></header><div class="excerpt"><p>Part programming and CNC Machine | Interview Question and Answers
Part programming and CNC Machine | Interview , viva ,oral Question and Answers  1. Define numerical control machine.  Numerical...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/part-programming-and-cnc-machine-interview-question-and-answers/" aria-label="View Post: Part programming and CNC Machine | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Part programming and CNC Machine | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/part-programming-and-cnc-machine-interview-question-and-answers\/","articleBody":"Part programming and CNC Machine | Interview Question and Answers\r\nPart programming and CNC Machine | Interview , viva ,oral Question and Answers\r\n\r\n1. Define numerical control machine.\r\n\r\nNumerical control can be defined as a form of programmable automation in which the process is controlled by numbers, letters and symbols.\r\n\r\n2. List out any 3 Basic component of NC system\r\n\r\n1.Program of instruction 2.Controller unit 3.Machine tool\r\n\r\n3. Classify NC Motion Control Sysem\r\n\r\n1.Point to point 2. straight Cut 3.Contouring\r\n\r\n4. Mention any 3 Application of Numerical control\r\n\r\n1 .Milling 2.Drilling 3 .Boring\r\n\r\n5. What is NC part programming\r\n\r\nNC part programming is the procedure of by which the sequence of processing steps to be performed on the NC machine is planned and documented\r\n\r\nRead more ;\u00a0Standard G Code and M Code | CNC programming basics\r\n\r\n6. What is tape reader?\r\n\r\nThe tape reader feed the data from the tape to the buffer in blocks.\r\n\r\n7. What are the responsibility in computer assisted part programming\r\n\r\n1 .Defining the work part geometry, 2. Specifying the operation sequence and tool path.\r\n\r\n8. What is APT language?\r\n\r\nAPT is not only a NC language it is also the computer program that performs the calculations to generate cutter positions based on APT statement.\r\n\r\n9. Classify statements in APT\r\n\r\n1. Geometry statement 2. Motion statement 3.Post processor statement 4. Auxilary Statement\r\n\r\n10. Define Check surface.\r\n\r\nThis is the surface that stops the movement of the tool in its current direction.In a sense,the forward movement of the tool.\r\n\r\n11. Write general form of Motion Statement\r\n\r\nmotion command\/descriptive data example:GOTO\/Pl\r\n\r\n12. Mention any 4 Post processor statement in APT\r\n\r\nCOOLNT, END, FEDRAT, MACHIN, RAPID\r\n\r\n13. Write any 3 Contouring Motion words\r\n\r\nGOLFT GOFWD GOUP GORGT GOBACK\r\n\r\n14. What are the merits of CAD\/CAM IN NC programming\r\n\r\n\u2022 Savings in geometry definition\r\n\u2022 Immediate visual verification\r\n\u2022 Use of automatic programming routine\r\n\r\n15. What is CNC\r\n\r\nCNC is an NC system that utilizes a dedicated,stored program computer to perform some or all of the basic numerical control functions\r\n\r\n16. What are functions of CNC?\r\n\r\n1. Machine tool Control\r\n2. In Process compensation\r\n3. Improved Programming and operating feauters\r\n\r\nRead more :\u00a0Classification of Numerical Control CNC Machines\r\n\r\n17. List out any 3 merits of CNC.\r\n\r\n1. Part program tape and tape reader are used only once\r\n2. Tape editing at machine site\r\n3. Greater flexibility\r\n\r\n18. What is FTP NC?\r\n\r\nThe objective of machine tool control system to move the cutting tool to a predefined location.\r\n\r\n19. What do you mean by machining centre ?\r\n\r\nThe machining centre in a control machines is an automatic tool changing arrangement that is designed to perform a variety of machining operations, with large number of cutting tools and provided with a continuous path CNC system.\r\n\r\n20. Where is the common path contouring used?\r\n\r\nCommon path contouring is used in grinding machine and routes.\r\n\r\n21. What is a part program ?\r\n\r\nPart program is a high level language program containing the instructions for-machining a part on sheets with respect to various standard words \/ codes and symbols.\r\n\r\nbobcad cam - cnc programming software\r\n\r\n22. What is post processing?\r\n\r\nPost processing is a computer program that takes a generalized part program output and adopts it to a particular machine control unit\/ machine tool combination. It is the basic intelligence required to change the program into computer language.\r\n\r\n23. Name the language used in CNC programming.\r\n\r\nThe language used in CNC programming is APT(Automatically Programmed Tool).\r\n\r\n24. Write the various types of tape readers.\r\n\r\nThe various types of tape readers are:\r\na) Electromagnetic tape reader. b) Magnetic tape reader.\r\nc) Photo eletrical tape reader. d) Pneumatic tape reader.\r\n\r\n25. Write the order of the instructions in a part program.\r\n\r\nThe order of the part program is\r\n1. Preparatory function, 2.Feed function, 3.Tool function, 4.End of block\r\n\r\n26. What is meant by manual part programming?\r\n\r\nManual part programming is a process of writing programs which consist of a set of instructions to carry out the machining of the work.\r\n\r\n27. Write the disadvantages of manual part programming.\r\n\r\nThe disadvantages of manual part programming are:\r\na) It is difficult to perform several co-ordinate calculation for complex shapes.\r\nb) Setting of the tool can be done to an approximate dimension and the difference is adjust by suitable external switches set.\r\n\r\n28. What is preparatory function ?\r\n\r\nIt is word address format represented by the letter G ,followed by a numerical code for the operation of the control unit to instruct the machine tool.\r\n\r\n29. What is tool length offset?\r\n\r\nWhen tools with different length are used, then the difference in their lengths with respect to a datum is known as offset of each tool.\r\n\r\n30. Give a brief note on Canned Cycle.\r\n\r\nThe canned cycle simplifies and shortens the programming in such way whenever any one of the above operation is required.\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nManufacturing Technology Notes , Articles\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Part programming and CNC Machine | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/gear-cutting-gear-manufacturing-interview-question-and-answers/">Gear Cutting &#8211; Gear Manufacturing | Interview Question and Answers</a></p></header><div class="excerpt"><p>Gear Cutting - Gear Manufacturing | Interview Question and Answers
Gear Cutting - Gear Manufacturing | Interview , viva , oral Question and Answers  1. Write any four advantages of milting...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/gear-cutting-gear-manufacturing-interview-question-and-answers/" aria-label="View Post: Gear Cutting &#8211; Gear Manufacturing | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Gear Cutting &#8211; Gear Manufacturing | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/gear-cutting-gear-manufacturing-interview-question-and-answers\/","articleBody":"Gear Cutting - Gear Manufacturing | Interview Question and Answers\r\nGear Cutting - Gear Manufacturing | Interview , viva , oral Question and Answers\r\n\r\n1. Write any four advantages of milting gears?\r\n\r\nThe advantages of milling gears are:\r\n1. All types of gears i.e. spur, helical, worm, bevel are possible and easy to cut.\r\n2. Both roughening and finishing operations can be easily done and fine surface finish can be obtained.\r\n3. It is useful for any tooth form\r\n4. Initial cost is low\r\n\r\n2. Where is the form of relieved convex involute gear used?\r\n\r\nInvolute gear cutter is used in forming of gear in milling machine.\r\n\r\n3. State the principle involved in gear shaping?\r\n\r\nThe principle involved in gear shaping is that an involute gear will roll with any other involute gear of the same base pitch\r\n\r\n4. What are the various methods of shaping the gear blank?\r\n\r\nThere are two methods involved in shaping the gear blank. They are:\r\n1) Shaping with single point tool formed to the tooth space of the gear.\r\n2) Generating with pinion type cutter.\r\n\r\nRead more :19 Methods Of Manufacturing Of all types of Gears\r\n\r\n5. What do you understand by gear generating?\r\n\r\nGear generating process is based on the fact that any two motives gear of the some module will mesh exactly. In this process one of the gears act as cutter. Due to relative rolling motion of the cutter and blank, gear teeth are generated.\r\n\r\n6.\u00a0 Distinguish between the forming and generating methods?\r\n\r\nSingle point Tool (Forming): Here the tool is a single point tool. The job should be indexed for every tooth; The tool is fixed. Pinion type cutter (Generating): Here the tool is also a gear made of hard steels, (Used as cutter). The job is not indexed for every tooth. The cutter as well as the blank rotates simultaneously meshing with each other.\r\n\r\n7. What are the factors affecting geometrical accuracy of the circular component . in shape?\r\n\r\nGeometrical accuracy of the circular component depends upon:\r\n\r\na) The trueness of the work piece rotation,\r\nb) Parallelism of the tool movement with the work spindle axis,\r\nc) The effect of the tool wear.\r\n\r\n8. Write the advantages of gear shaping (Generating)?\r\n\r\nThe advantages of Gear shaping are:\r\n\r\na) with a particular module of DP cutter, gears having the same module of DP but different number of teeth can be cut accurately,\r\nb) Quicker and economical,\r\nc) Only one cutter is used for cutting all spur gears of same pitch,\r\nd) Both internal and external gears can be cut.\r\n\r\nRead more : Gear Shaping-Gear Shaper Working ,Principle- Gear Manufacturing\r\n\r\n9. What is the main disadvantage of gear shaping?\r\n\r\nThe main disadvantage of gear shaping is that Worm and worm wheels cannot be generated on a gear shaper.\r\n\r\n10. When do you prefer shaping process for generating a gear?\r\n\r\nGear shaping is preferred for operations like cutting gear segments, cutting, spur gear, herringbone gears, splines and sprockets etc., of gear shaping over other diameter.\r\n\r\ngear shaping process\r\n\r\n11. What are the advantages of gear shaping over the other methods?\r\n\r\nThe advantages are:\r\na) The finished gear has a generated profile\r\nb) It is suitable for cutting internal gears\r\nc) Only one cutter is used for cutting all spur gears of the same pitch.\r\n\r\n12. What are the specific types of gears that could be formed specifically by gear shaping process?\r\n\r\nShaping process can operate on classes of gearing outside the capacity of other methods. Example are: a) Internal gears with or without back shroud, b) Cluster gears.\r\n\r\n13. Distinguish between gear shaping and gear planning?\r\n\r\nGear shaping:\r\na) The job is indexed and tool reciprocates\r\nb) Gear can be generated by using form tool as well as pinion cutter.\r\n\r\nGear planning:\r\na) Job is indexed and reciprocated but the tool is fixed.\r\nb) Gear can be produced by means of form tool and Rack cutters.\r\n\r\n14. What is the basic condition to use 'Bobbing' in geers?\r\n\r\nHobbing can be done only if the gear blank to be generated are of the same modules\r\n\r\n15. Write the formula for calculating index change gears in gear bobbing?\r\n\r\nFor Index change gear: Driving Teeth - Indexing constant x Number of teeth of hob Driven Teeth Number of teeth to be cut.\r\n\r\n16. Name the different types of bobbing?\r\n\r\nDifferent types of bobbing arc classified under the direction of feed of hob are:\r\na) Axial hobbing b) Radial hobbing c) Tangential nobbing.\r\n\r\n17. Explain axial hobbing process?\r\n\r\na) Gear blank is brought towards the hob for required depth.\r\nb) Table slide is then clamped.\r\n\r\n18. What are the advantages of gear hobbing?\r\n\r\nThe advantages of gear hobbing are:\r\na) The method is versatile and can generate spur, helical, worm and worm wheels.\r\nb) It is rapid, economical and highly productive.\r\n\r\n19. Give any three differences between gear bobbing and gear milling?\r\n\r\nGear Hobbing:\r\na) Hob operates on several teeth at a time.\r\nb) It is not necessary to disengage cutter and work before indexing.\r\nc) Gear hobbing is faster process than gear milling.\r\n\r\nGear Milling:\r\na) Milling machine can cut only one tooth at a time.\r\nb) It requires cutter and work to get disengaged before indexing can occur.\r\nc) It is slower process compared to gear hobbing process.\r\n\r\nRead More:\r\nWorking Of Gear Hobbing Process-Advantages and Limitations\r\nProcedure Of Spur Gear Cutting on Milling machine\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nManufacturing Technology Notes , Articles\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\nNew Mechanical Projects 2020 ( All Projects Post Index List )\r\n\r\n\r\n\r\n&nbsp;","headline":"Gear Cutting &#8211; Gear Manufacturing | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <article class="article-card horizontal no-thumb"><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/grinding-machine-interview-question-and-answers/">Grinding machine | Interview Question and Answers</a></p></header><div class="excerpt"><p>Grinding machine | Interview Question and Answers
Grinding machine | Interview , VIVA ,Oral Question and Answers  1.What is meant by Grinding?  Grinding is a metal removal process or operation...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/grinding-machine-interview-question-and-answers/" aria-label="View Post: Grinding machine | Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Grinding machine | Interview Question and Answers","url":"\/\/www.gunkrazy.com\/grinding-machine-interview-question-and-answers\/","articleBody":"Grinding machine | Interview Question and Answers\r\nGrinding machine | Interview , VIVA ,Oral Question and Answers\r\n\r\n1.What is meant by Grinding?\r\n\r\nGrinding is a metal removal process or operation performed by means of rotating abrasive wheel that acts as a cutting tool against the work piece.\r\n\r\n2.Why is grinding called finishing process?\r\n\r\nGrinding is called finishing process, because the grinding process removes metal usually in the order of 0.25 to 0.50 mm. Which produces very high quality surface finish.\r\n\r\n3.What is the approximate thickness of metal removed in grinding operation ?\r\n\r\nThe approximate thickness of metal removed in grinding operation is 0.01 to 0.03 mm.\r\n\r\n4.What are the main types of grinding?\r\n\r\nThe two main types of grinding are:\r\na) Rough or Non-precision grinding, b) Precision grinding.\r\n\r\nRead More :\u00a0Types of Grinding Machines -LearnMech\r\n\r\n5.What are the different types of rough grinders?\r\n\r\na) Floor stand and bench type grinders b) Portable and flexible shaft grinders c) Swing frame grinders d) Abrasive belt grinders.\r\n\r\n6.What are the types of precision grinders?\r\n\r\na) Cylindrical grinders b) Internal grinders c) Surface grinders d) Tool and cutter grinders e) Special grinding machines\r\n\r\n7.What is surface grinding?\r\n\r\nSurface grinding is the process of producing and finishing flat surfaces by means of a grinding machine using a revolving abrasive wheel.\r\n\r\nHorizontal spindle surface grinding machine with reciprocating table (Courtesy: Prayosha Enterprise)\r\n\r\n8.What are the types of surface grindings?\r\n\r\nThe different types of surface grindings ate:\r\n1. Reciprocating table surface grindings - a. Horizontal type b. Vertical type. \r\n\r\n2. Rotating table. - a. Horizontal spindle b. Vertical spindle.\r\n\r\n9. What types of work can be ground by a surface grinder?\r\n\r\nSurface grinder can be used for flat surface, irregular surface, curved surface, tapered surface, convex surface and concave surface.\r\n\r\n10. What are the types of internal grinders?\r\n\r\nThe different types of internal grinders are:\r\n1. Chucking grinders\r\na) Plain b) Universal\r\n2. Planetary grinders 3. Centreless grinders\r\n\r\nRead more :\u00a0Types of Internal grinding machine with Diagram Explained\r\n\r\n11. What is the use of internal grinders?\r\n\r\nInternal grinders are used to finish straight, tapered, or formed holes to correct size, shape and finishing.\r\n\r\n12. What are the different types of external grinders?\r\n\r\nExternal grinders are divided into\r\na) Plain cylindrical grinders\r\nb) Universal grinders\r\nc) Special grinders such as the centre less grinders.\r\n\r\n13. What are the uses of external grinders?\r\n\r\nExternal grinders are used for grinding cylindrical surfaces and to produce external cams eccentrics and special form on the outside diameter of the work.\r\n\r\nRead more :\u00a0Types of Cylindrical grinding machine with Diagram Explained\r\n\r\n14. List out the surfaces ground by the plain cylindrical grinder?\r\n\r\nExternal cylinders, tapers, fillets, undercuts and shoulders are some\r\na) The head stock spindle may be used alive or dead.\r\nb) The headstock can be swiveled at an angle in horizontal plane.\r\nc) The wheel head and slide can be swiveled and traversed at any angle.\r\n\r\n15. Explain briefly; the meaning of centre less grinding?\r\n\r\nGrinding the diameter of the work piece without mounting on centres is known as centre less grinding.\r\n\r\n16. What are the operations done in centre less grinders?\r\n\r\nThe various operations are:\r\na) Through feed grinding b) In feed grinding c) End feed grinding\r\n\r\n17. What are the main disadvantages in centre less grinding?\r\n\r\nThe main disadvantages are:\r\na) The hollow work cannot be grinded\r\nb) The work having multiple diameters is not easily handled.\r\n\r\n18. How does the centre less grinding operate ?\r\n\r\nThe centre less grinding operates with two wheels as the cutting or grinding wheel, to remove excess stock and a regulating wheel is used to control the speed of rotation of work and rate of feed.\r\n\r\n19. Why is the centre less grinders called specialized machine for Cylindrical parts?\r\n\r\nCentre less grinders are called specialized machine for cylindrical parts because it was developed form the rapid production of cylindrical, external taper, or external profile work.\r\n\r\n20. What are the advantages of centre less grinding?\r\n\r\nThe advantages of centre less grinding are:\r\na) The work piece is suppressed through the operations.\r\nb) No tendency for chatter or deflection of work\r\nc) Easy control of the size of the work\r\nd) No need of chucking or mounting.\r\n\r\n21. What are the types of wheel that are mounted on way grinders? \r\n\r\nCup, Ring or segmented wheels are the wheels that are mounted on vertical spindle of a way grinders.\r\n\r\n22. What are the work holding and supporting devices used in grinders ?\r\n\r\nWork holding and supporting devices include:\r\na) Steady rest for cylindrical grinders.\r\nb) Chucks and fixtures for other grinders,\r\nc) Magnetic chucks used particularly on surface grinders.\r\n\r\n23. What are the two types of magnetic chucks?\r\n\r\na) Electromagnetic chuck b) Permanent magnetic chuck.\r\n\r\n24. What is the use of magnetic chuck in surface grinding?\r\n\r\nThe magnetic chuck helps in firmly holding the workplace without any distortion due to pressure of the jaws, which is undesirable. Magnetic chuck is used for holding a very thin work piece, made of magnetic material. Moreover more number of similar work piece can be conveniently located on the surface for simultaneous grinding.\r\n\r\n25. How are the non-ferrous metals held in magnetic chuck?\r\n\r\nNon-ferrous metals may be held on a magnetic chuck by clamping them in suitable fixtures made of iron or steel by exhausting air from a vaccum chuck.\r\n\r\n26. What are the attachments used in grinding machines?\r\n\r\nThe different attachments are:\r\na) Equipments for contour grinding\r\nb) Attachments to improve grinding results\r\nc) Measuring and sizing device\r\n\r\n27. What is meant by measuring and sizing devices?\r\n\r\nThe measuring and sizing devices range from simple measuring devices to continuous reading gauge, which actually control the feeding of the machine.\r\n\r\n28. What are the attachments used to improve grinding results?\r\n\r\nThe attachments include wheel reciprocating attachments for better finish, ultrasonic cleaning devices and electrolytic attachments to aid in grinding extremely hard materials.\r\n\r\n29. What is meant by dressing of grinding wheels?\r\n\r\nDressing of the grinding wheels refer to conditioning the face of the wheel for the operations to be performed ,like opening the face for free cutting, smoothing the face for finishing and removing and load from the free face.\r\n\r\n30. What are the different types of fine finishing process?\r\n\r\nMilling, super finishing, polishing, buffing, metal spraying,galvanizing and electroplating are the fine finishing process.\r\n\r\n31. What is honing?\r\n\r\nHoning is a machining process similar to grinding, used to finish a fine before surface.\r\n\r\n32. How does honing differ from grinding?\r\n\r\nGrinding machines run at high speeds and pressure, which results in high temperatures. But, Honing requires slow speed and low-Pressure, which keeps surface temperature relatively low.\r\n\r\n33. What are the materials normally be worked by the Honing process?\r\n\r\nSteels of all varieties, Cast iron, aluminum, magnesium, brass, bronze, glass, ceramics, hard rubbers, graphite etc., are few examples honing.\r\n\r\n34. Give the product applications of lapping?\r\n\r\nLapping is done as precision tools, gauges, valves and on other similar places, where resistance to wear of moving parts, better sealing characteristics and longer life of cutting edges are preminent factors.\r\n\r\nRead More :\u00a0Lapping Process- Characteristics, Advantages ,Process Parameter\r\n\r\n35. What is meant by polishing?\r\n\r\nPolishing is the surface finishing operation performed by a polishing wheel, for the purpose of removing appreciable metal to take out scratches, hole marks, pits and other defects from rough surfaces.\r\n\r\nRead More :\u00a0What is Electropolishing -Advantages and Disadvantages\r\n\r\n\r\n\r\nMore Resources \/articles\r\nTechnical Mechanical Interview Question and Answers\r\nTechnical Mechanical Interview Question and Answers\r\nMachine Tool Articles , notes , Interview Que &amp; Ans\r\nLatest seminar topic index - Report ,PPT Download\r\nMechanical Subjectwise Basic Concept Notes ,Articles\r\n\r\n\r\n\r\n&nbsp;","headline":"Grinding machine | Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-05-10","mainEntityOfPage":"False","dateModified":"February 19, 2020","image":{"@type":"ImageObject","url":"","height":0,"width":0},"publisher":{"@context":"http:\/\/schema.org\/","@type":"Organization","name":"Learn Mechanical Engineering","logo":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2020\/01\/learn-mech-logo-1-300x300.png","height":600,"width":60}}}</script> <nav class="pagination-wrapper" aria-label="article pagination"> <a class="prev page-numbers" href="?page_num=51">&laquo; PREV</a> <a class="page-numbers" href="?page_num=1"><span class="screen-reader-text">Page </span>1</a> <span class="page-numbers dots">&hellip;</span> <a class="page-numbers" href="?page_num=50"><span class="screen-reader-text">Page </span>50</a> <a class="page-numbers" href="?page_num=51"><span class="screen-reader-text">Page </span>51</a> <span aria-current="page" class="page-numbers current"><span class="screen-reader-text">Page </span>52</span> <a class="page-numbers" href="?page_num=53"><span class="screen-reader-text">Page </span>53</a> <a class="page-numbers" href="?page_num=54"><span class="screen-reader-text">Page </span>54</a> <span class="page-numbers dots">&hellip;</span> <a class="page-numbers" href="?page_num=338"><span class="screen-reader-text">Page </span>338</a> <a class="next page-numbers" href="?page_num=53">NEXT &raquo;</a></nav></section></main><aside id="secondary" class="widget-area"><div class="about-wrapper"><h2 class="widget-title" style="background: #d693c6; color: #ff392e">About Us</h2><div class="about-image" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2020/03/Sachin-Thorat-300x300-min.png')"></div><p class="about-copy">LearnMech.Com is a Mechanical Project-oriented platform run by Sachin Thorat who is a B-Tech Graduate in Mechanical Engineering. 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