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In this post we will see interview questions related to basic of gears , types of gears , gear manufacturing  . This questions and...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/basic-of-gears-machine-design-interview-questions-and-answers/" aria-label="View Post: Basic of Gears | Machine Design &#8211; Interview Questions and answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Basic of Gears | Machine Design &#8211; Interview Questions and answers","url":"\/\/www.gunkrazy.com\/basic-of-gears-machine-design-interview-questions-and-answers\/","articleBody":"Basic of Gears | Machine Design - Interview Questions and answers\r\nIn this post we will see interview questions related to basic of gears , types of gears , gear manufacturing\u00a0 . This questions and answers are helpful for Mechanical students who preparing for viva, Oral , Interview .\r\n\r\n1. Mention some applications of gear drives.\r\nGear drives are employed in many fields such as from smaller instruments to the heaviest\r\nand most powerful machines,crushers etc. Some of the common applications of gears\r\nare in hoisting machinery, rolling mill, machine tools such as lat machines, etc.\r\n\r\n2.How are gears classified?\r\nGears are classified based on\r\n(a) Axes of gear shafts as\r\ni) Parallel - Eg. spur, helical, herring-bone gears.\r\n\r\n ii) Intersecting - Eg. Bevel gears. \r\n\r\niii) Non-parallel and non-intersecting - Eg.- worm, gears, Skew gears.\r\n(b) Profile of gear tooth - i) Involute gears. ii) Cycloidal gears.\r\n(c)\u00a0 Position of teeth on wheel rim.\r\n(D) Tooth parallel to axis of gear - Eg. Spur gears. ii) Tooth inclined to axis of gear - Eg. Helical gears.\r\n(d) Pressure angle - i) Gears with 201 pressure angle. ii) Gears with 14 1\/20 pressure angle.\r\n\r\nSee also :\u00a0Types Of Gears, Material Used For Gears,Design Specification and Application\r\n\r\n3.Illustrate the materials for making gears .\r\n1. Ferrous metals such as carbon steels, alloy steels of nickel, chromium and vanadium.\r\n2. Cast-iron of different grades.\r\n3. Non-ferrous metals such as brass, bronze, etc.\r\n4. Non-metals like phemolic resins nylon, bakelite etc.\r\nAmong them steel with proper heat treatment is extensively, employed in many of 'the engineering applications.\r\n\r\n4 .Specify the types of gears-failures.\r\na) Tooth breakage. b) Pitting of tooth surface. c) Abrasive- wears. d) Seizing of teeth etc.\r\n\r\n5. At what occasions\u00a0non-metallic gears are employed.\r\nNon-metallic gears are employed 'where we require silent operation and low power transmission. \r\n\r\nFor example, in instruments like pressure gauge and so on.\r\n\r\n6.\u00a0 How are the following terms defined?\r\na) Pressure angle (a) is the angle making by the line of action common- tangent to the pitch circles of mating pars.\r\nb) Module m is the ratio of pitch circle diameter to the number d of gear teeth, and is usually represented in millimetres.\r\n\r\n7.\u00a0 Define the following terms.\r\n\r\na) Back lash is the difference between tooth thickness and the space into 'which it meshes, measured along the pitch circle. If we assume the tooth thickness as t, and space width as t2 then backlash = t2 - tl\r\n\r\nb) Gear ratio \r\n\r\n(i) is the ratio of number of teeth of larger gear to that of smaller gear. At is also defined as the ratio of high speed to the low speed in a gear drive. Usually, the gear ratio should always be greater than one.\r\n\r\nSee also :\u00a0Basic Of Gears -Gear Terminology\/ Gear nomenclature\r\n\r\n8.\u00a0What preliminary design considerations should be, adopted, When selecting gear drive?\r\nAll kinds of gears can not be useful for all kinds of work. Hence following factors should be considered for selecting a specific type of gear drive.\r\ni) The amount of.power to be transmitted.\r\nii) Space availability.\r\niii) Amount of gear ratio for single step.\r\niv) Causes for gear failures and their preventing methods.\r\nv) Proper material\r\nvi) Life of gears required, usually 10,000 hours.\r\n\r\n9.\u00a0 What is interference in gears? How can you overcome it?\r\nGear profile usually starts, from base circle and ends with tip teeth are made in such a way that their contact is along the pro the top surface of teeth is made, flat, the tip of the teeth of one gear dig I into the bottom flank of mating gear. This action is called interference.\r\n\r\n10.\u00a0 On what basis gear cutters are selected?\r\n\r\nGear cutters are selected based on the following conditions.\r\n1) Properties of materials for work piece and tools.\r\n2) Cost of production.\r\n3) Structure of gears such as spur gear, helical gears and so on.\r\n4) Module of the gear.\r\n\r\nSee also :\u00a019 Methods Of Manufacturing Of all types of Gears\r\n\r\n11.\u00a0. How do gears fail?\r\na)Gears may fail due to tooth breakage by overload and misalignment of shafts.\r\nb) corrosion of teeth by improper lubricants.\r\nc) tooth wear because of insufficient lubrication.\r\nd) interference because of no under-cut. \r\n\r\n12.\u00a0What stresses are induced in gear tooth?\r\n1. Surface compressive stress.\r\n2. Bending stress.\r\n\r\n13. What is meant by a corrected gear?\r\nIn normal gear, there may be an undercut between base circle and root circle which weakens the teeth. This undercutting can be avoided by making some modifications on the gear profile. This modification is addendum modification or profile correction or profile shift. The gear, which has this correction, is called as corrected gear.\r\n\r\n14.\u00a0What are the effects of little backlash and. excessive backlash on gears\r\nToo little backlash may lead to over loading, overheating and ultimately seizure resulting eventual failure of the system. On the excessive backlash may cause, non uniform - transmission of motion. backlash may also cause noise and impact loads.\r\n\r\n15.\u00a0Define form factor?\r\nForm factor is a constant, employed in the design of gear which, design the shape and the\r\nnumber of teeth.\r\n\r\n16.\u00a0What is helix angle? How this angle differentiate helical gear from\r\nHelix angle -is the angle between the axis of the gear and the through tooth face.For\r\nhelical gear, teeth are cut at an inclined axis, specified as'helix angle and its value ranges\r\nfrom 8 degree to 25' the case of spur gear, tooth-are cut parallel to the axis, the spur gear is zero.\r\n\r\n17.\u00a0What is a herringbone gears?\r\nA herring bone gear is made of two single helical gears attached other hence called as double helical gear in which the teeth of be set in the opposite direction to the teeth of another gear arrangement the axial thrust produced in one gear will be null', thrust produced in another gear, and the resultant thrust is improves the life of the gear.\r\n\r\n18.\u00a0What is a bevel gear?\r\nBevel gear is the type of gear for Which the teeth are cut on conical surface in contrast with spur and helical gears for which the teeth are cut on cylindrical surfaces. The structure of bevel gear is similar to and uniformly truncated frustum of a cone.\r\n\r\nbevel-gear\r\n\r\n19.\u00a0Based on the included angle between the shaft axes, called as shaft angle\r\na) External gears &lt; 900)\r\nb) Internal gears &gt; 90*)\r\nc) Crown gears 90\r\n\r\n20.\u00a0 In which gear-drive, self-locking is available?\r\nSelf locking is available in worm-gear drive. \r\n\r\n21.\u00a0Write some applications of worm gear drive.\r\nWorm gear, drive find wide applications like milling machine indexing head, table fan,\r\nsteering rod of automobile and so on.\r\n\r\n22. What are the merits and demerits of worm gear drive;\r\nMerits\r\n1) Used for very high velocity ratio of about 100\r\n2) Smooth and noiseless operation.\r\n3) Self-locking facility is available.\r\nDemerits\r\n1) Low efficiency.\r\n2) More heat will be produced and hence this drive can be operated inside an oil reservoir\r\nor extra cooling fan is required in order to dissipate the heat from the drive.\r\n3) Low power transmission.","headline":"Basic of Gears | Machine Design &#8211; Interview Questions and answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-19","mainEntityOfPage":"False","dateModified":"February 22, 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/power-transmission-drives-machine-design-interview-question-and-answers/">Power transmission Drives | Machine Design &#8211; Interview Question and Answers</a></p></header><div class="excerpt"><p>Power transmission Drives | Machine Design - Interview Question and Answers
Power Transmission Drives Question and Answers : 
1. What is a power drive? Mention their types.
The power drive is a...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/power-transmission-drives-machine-design-interview-question-and-answers/" aria-label="View Post: Power transmission Drives | Machine Design &#8211; Interview Question and Answers">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Power transmission Drives | Machine Design &#8211; Interview Question and Answers","url":"\/\/www.gunkrazy.com\/power-transmission-drives-machine-design-interview-question-and-answers\/","articleBody":"Power transmission Drives | Machine Design - Interview Question and Answers\r\nPower Transmission Drives Question and Answers :\u00a0\r\n1. What is a power drive? Mention their types.\r\nThe power drive is a set of machine members employed to transmit power or energy produced in one machine to another machine.\r\nTheir main types\r\n(1) Mechanical,\r\n(2) Hydraulic,\r\n(3) Pneumatic and\r\n(4)Electrical drives.\r\n\r\nRead Also : 10 Power Transmission Devices used in Mechanical Engineering\r\n\r\n2. What is meant by mechanical drives? Classify them.\r\nThe drives which transmit power by means of contact forces are called as mechanical drives. They can be classified based on\r\n(a) Way of power transmission.\r\n(i) Friction drives [E.g. Belt drives, Rope drives]\r\n(ii) Toothed drives [Eg.. Gear drives, Chain drives]\r\n(b) Centre distance between power shafts\r\n(i) Long distance drives (Eg. Belt drives, chain drives, rope drives)\r\n(ii)Short distance drives (Eg. Gear drives)\r\n(c) Intermediate link between driving and driven members.\r\n(i) No intermediate link (Eg. Gear drives)\r\n(ii) With intermediate link (Eg. Belt, rope drives, chain drives)\r\n\r\n gear drives\r\nBelt and Pulley -\u00a0 Interview Question and answers\u00a0\r\n3.State the -Law of Belting'\r\nThe law of belting states that the centerline of the belt when it approaches the pulley must lie in the midplane of that pulley which should be perpendicular to the axis of the pulley. Otherwise the belt will runoff the pulley.\r\n\r\n4.Explain the term crowning of pulleys.\r\nPulleys are provided. a -slight conical shapes (or),.,,convex shapes in their rim's r surface in order to prevent the belt from running off the pulley due centrifugal force. This is known as crowning, of pulley. Usually the crowning height t may be 1\/96 of pulley face width. \r\n\r\n5.Briefiy explain about friction and its applications\r\nFriction is said to be a resisting force that is developed between two relatively -moving surfaces. For some machines, this frictional force may be, an unwanted force and hence it is to be reduced to the maximum level. For some other machines. Bearings brakes, clutches are the good examples.\r\n\r\n6.What are the types of belts?\r\n(a) Flat Belts\r\n(b) V Belts\r\n(ii) multiple V belt\r\n(iii) Ribbed Belt.\r\n(c) Toothed or Timing\r\n(d), Round, Belts.\r\n\r\n7. State the materials for belts.\r\nLeather,, cotton fabrics ,rubber, animal's hair, silk, rayon, woolen etc\r\n\r\n8. Indicate some merits and demerits of belt-drive;\r\n\r\nMerits\r\n1. Belt drives are used for long distance power transmission.\r\n2, Their operations are smooth and flexible.\r\n3. Simple in design and their manufacturing cost is lower.\r\nDemerits,.\r\n1. They need large space.\r\n2. Loss of power due to friction is more.\r\n\r\n9. By what materials, belt-pulleys are made?\r\nBelt-pulleys are made of cast-iron or steel\r\n\r\n10. What is meant by the ply of belt?\r\nFlat belts are.made of thin strips and laminated one over the other in order to get thick belt. These thin strips or sheets are called as plies of belt. Usually flat belts are made of 11 ply, 4 ply, 5 ply, 6 ply and 8 ply belt etc And 4 ply belt is thicker han 3 ply belt and so-on.\r\n\r\n11. Mention the different types of joints employed for joining flat-belts.\r\n\r\n(i) Cemented joints \r\n\r\n(ii) Laced joints\r\n\r\n (iii) Crest joints.\r\n\r\n (iv) Hinged joints.\r\n\r\n12.What conditions should be followed when flat belt drive is installed?\r\n1. The axes of power transmitting shafts should be parallel.\r\n2. It should have, optimum center distance between the shafts'.\r\n3. The tight-side of the drive should be at the bottom side of the pulley.\r\n\r\n13.What is belt rating?\r\nFlat-belts are made of different sizes such as 3 ply, 4 ply and V - belts are made of different grades such as A, B, C, D and E grade belts. Belt rating is defined as the power transmitting capacity of unit size flat belt or a particular grade single V belt.\r\n\r\n14. Specify the application of round belt.\r\nRound-belt is applied, in sewing.machine.\r\n\r\n15.Specify the purpose of crowning of bets.\r\nTo prevent slipping from pulley due to centrifugal force\r\n\r\n16.What factors should be considered during the selection of a belt drive?\r\na) Amount of power to be transmitted., \r\n\r\nb) Peripheral and angular speeds. \r\n\r\nc) Speed ratio.\r\nd) Efficiency.\r\n\r\n e) Centre distance between staffs \r\n\r\nf) Space available. \r\n\r\ng) Working environment.\r\n\r\n17. Explain creep in belts.\r\nSince the tensions produced by the belt on the two sides of the pulley are not equal, the belt moves with a very negligible velocity, due to the difference of two tensions. This slow movement of the belt over the pulley is known as creep of belt and it is generally neglected.\"\r\n\r\n18. How is a V-belt designated?\r\nV-belt is designated by a grade letter followed by its inside length in code number, year of coding. For example, D 3048: IS 2494: 1964. M belts are designated by the grade letter and inside length only such D - 3048. Sometimes, the inside length may be denoted\r\nin inches as D\r\n\r\n19. In what ways, timing belts are superior to ordinary V-belts?\r\n\r\nSince the timing belts possess toothed shape in their -inner side, engagement with toothed pulley will provide positive drive without, belt-slip where as in the case of ordinary Vbelts, chances of slip are and hence positive drive is not possible at all times. Hence toothed belts (I timing belts) are superior to ordinary V-belts.\r\n\r\nChain and Sprocket- Interview Question and Answers :\r\n\r\n20. Write the features of a chain drive.\r\nA chain drive is a flexible mechanical drive which may be considered to be intermediate between belt drive and gear drive in that it has features common to both, Chains are suitable for long as well as short center distance drives and give a more compact, drive than is possible with belts. Chain drives are similar to belt drives in which the chains, are operated between toothed wheels called as sprockets.\r\n\r\n21. Mention the applications of chain drives.\r\nChain drives are employed in transportation machineries like motor-cycle, bi-cycles, automobiles and technological machineries, like agricultural machines, crushes etc.\r\n\r\n22. What are the advantages of chain drives?\r\nChain drives\r\n1. Are having more power transmitting capacity.\r\n2. Have higher efficiency and compact size.\r\n3-Exert -less load on shafts since no initial tension is applied on the sprocket shafts.\r\n4. Require easy maintenance\r\n\r\n23. Specify some drawbacks of chain drives.\r\n1. The design of chain drive is more complicated.\r\n2. The operation is noisy and production cost is high.\r\n3. They require more accurate assembly bf shafts than for belts.\r\n\r\n24. Indicate the types of chains.\r\na) Driving chains b) Hauling chains c) Loading chains.","headline":"Power transmission Drives | Machine Design &#8211; Interview Question and Answers","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-19","mainEntityOfPage":"False","dateModified":"February 22, 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 "> <a href="//www.gunkrazy.com/design-and-fabrication-of-organic-waste-shredding-machine-agricultural-project/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/02/shredder-machine-agricultural-project-300x195.jpg')"></div><span class="sr-only">link to Design and Fabrication of Organic Waste Shredding Machine &#8211; Agricultural Project</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/design-and-fabrication-of-organic-waste-shredding-machine-agricultural-project/">Design and Fabrication of Organic Waste Shredding Machine &#8211; Agricultural Project</a></p></header><div class="excerpt"><p>Design and Fabrication of Organic Waste Shredding Machine - Agricultural Project
Abstract:  Organic composting forms the backbone &amp; basic necessity of a poor farmer. The traditional methods...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/design-and-fabrication-of-organic-waste-shredding-machine-agricultural-project/" aria-label="View Post: Design and Fabrication of Organic Waste Shredding Machine &#8211; Agricultural Project">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Design and Fabrication of Organic Waste Shredding Machine &#8211; Agricultural Project","url":"\/\/www.gunkrazy.com\/design-and-fabrication-of-organic-waste-shredding-machine-agricultural-project\/","articleBody":"Design and Fabrication of Organic Waste Shredding Machine - Agricultural Project\r\nAbstract:\r\n\r\nOrganic composting forms the backbone &amp; basic necessity of a poor farmer. The traditional methods are not sufficient &amp; satisfactory for chopping the crop residues. Whereas buying the chemical fertilizer is not possible for every farmer due to its high cost and also food waste contains high calorific and nutritive values. In all the cities and places, organic waste is dumped or disposed in landfill or discarded, which causes the public health hazards and diseases like malaria, cholera, typhoid. Inadequate management of wastes like uncontrolled dumping bears several adverse consequences. Shredding machine is used for shredding and converting macro organic waste products into small or micro easily decomposable form, which can be used as organic manure. Organic waste shredder designed should perfect to shred all kinds of waste products. The organic waste shredded will be in small pieces to enable the farmer to make use of it as feed for manure or organic manure and biogas feed. This shredder can be operated with a motor.\r\n\r\nRead Also:\u00a0Design and Fabrication of Paper Shredder Machine - Mechanical Projects\u00a0\r\n\r\nIntroduction\r\nOrganic waste, or green waste, is organic material such as food, garden, agriculture and lawn clippings. It can also include animal and plant based material and degradable carbon such as paper, cardboard and timber. Burying organic waste in landfill is a big problem. Hence first we have to know the necessity\/reasons for solid waste management. Food waste is the organic material having the high calorific and nutritive values to microbes, that\u2019s why efficiency of methane production can be increased. In all the cities and places, organic waste is dumped or disposed in landfill or discarded, which causes the public health hazards and diseases like malaria, cholera, typhoid. Inadequate management of wastes like uncontrolled dumping bears several adverse consequences. It is not only polluting ground water and surface through leachate but also promotes the breeding of flies, mosquitoes, rats and other disease bearing vectors. Also, it produces unpleasant odor and methane which is a major greenhouse gas contributing to global warming. Agriculture is the major occupation in many parts of the world and producing a range of waste waters requiring a variety of treatment technologies and management practices. The basic occupation of 70% of the population in India is majorly dependent on Agriculture. A variety of crops are cultivated in India. But after harvesting them the crops wastages are either burnt out or thrown as waste without taking into consideration of their nutritive value. With the increase in the population our aim is not only to stabilize agriculture production but also to increase it further in sustainable manner. Excessive use of agro-chemicals like pesticides and fertilizers over years may affect the soil health and lead to declining of crop yields and quality of the products. Hence, a natural balance needs to be maintained at all costs for existence of life and property. The obvious choice would be judicious use of agro-chemicals and more and more use of naturally occurring materials in farming systems. Agriculture waste, which includes both natural and non-natural wastes. The conventional agro-waste disposal is a traditional and oldest method of waste disposal in which agriculture wastes are dumped as it is to degrade in a particular place for decomposing. As the waste are dumped, it takes more time to degrade and it causes environmental pollution. Hence the shredder machine is used for shredding i.e. converting of macro agriculture waste and food waste into small easily decomposable form, which can used as organic manure. The small size waste will decompose faster than the large or macro size waste. This decomposed waste can be used for the crops and this leads to improving in the growth and quality of the crops and also improving the soil chemical properties such as supply and retention of soil nutrients, and promotes chemical reactions.\r\n\r\nshredder machine -agricultural project\r\n\r\nOperation \r\n\r\nIn this Shredding machine, the Organic waste like Agriculture waste, Kitchen Debris, cooked foods etc are fed into the machine vertically through hopper on to the cutters. Cutters are mounted on shaft supported by bearings which is mounted on the machine frame. One shaft driven by motor and another shaft driven by spur gear both shaft rotated in opposite direction. The motor is rotated at certain speed 1440 rpm and with it coupled with gear box to reduce the speed and to increase the torque.\r\n\r\nCheck out Design and animation of shredder Machine :\r\n\r\nWhen the crop or waste come in contact with the rotating cutters or blades then the shearing action takes place. Due this shearing action, the large size waste converted into small micro size. This small size wastage will decompose faster than the macro size. The clearance between the rotating blades depends upon the size of the organic waste used for chopping. The chopped organic waste comes out of the machine and undergoes decomposition.\r\n\r\nDownload ,Reference ,Calculation\u00a0 :\u00a0\r\n\r\nhttp:\/\/ijiset.com\/vol2\/v2s10\/IJISET_V2_I10_23.pdf\r\n\r\nOther Agricultural related Machines , and Projects List please visit :\u00a0\r\n\r\nAgricultural Related Mechanical Engineering Projects","headline":"Design and Fabrication of Organic Waste Shredding Machine &#8211; Agricultural Project","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-18","mainEntityOfPage":"False","dateModified":"February 22, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/02\/shredder-machine-agricultural-project-300x195.jpg","height":195,"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/design-and-fabrication-of-paper-shredder-machine/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/02/Design-and-Fabrication-of-shredder-Machine-Mechanical-Project1-300x211.jpg')"></div><span class="sr-only">link to Design and Fabrication of Paper Shredder Machine</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/design-and-fabrication-of-paper-shredder-machine/">Design and Fabrication of Paper Shredder Machine</a></p></header><div class="excerpt"><p>Design and Fabrication of Paper Shredder Machine  | Mechanical Project 
Abstract:
 In this paper, we will discuss about detailed study, design procedure and results of a paper shredder machine....</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/design-and-fabrication-of-paper-shredder-machine/" aria-label="View Post: Design and Fabrication of Paper Shredder Machine">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Design and Fabrication of Paper Shredder Machine","url":"\/\/www.gunkrazy.com\/design-and-fabrication-of-paper-shredder-machine\/","articleBody":"Design and Fabrication of Paper Shredder Machine\u00a0\u00a0| Mechanical Project\u00a0\r\nAbstract:\r\n In this paper, we will discuss about detailed study, design procedure and results of a paper shredder machine. A detailed study of various parts of shredder machine like stand (frame), transmission system and cutting system are made and designed separately. Study of paper shredder machine included the machine elements which convert manual existing system to automatic system. Paper shredder machine is a mechanical device which is used to cut the paper into chad, typically either strips or fine particles. We are making this project model for recycling of paper wastage(important documents, personal information like social security number, account number, credit card application and other personal information) in domestic area, industrial area etc. in this areas the paper waste is present in large quantity. But the available machines used to recycle this waste are costly. So our intension behind this project is to process the paper waste as cheap as possible by shredding. Benefits of this machine are the reduction of labor work which results in cost reduction and also reduction in time for shredding operation of paper. So we are going to design this for shred the paper waste, with the help of blades.\r\nINTRODUCTION\r\nA paper shredder is a mechanical device used to cut paper into small strips. Government organizations, businesses and private individuals are used to destroy private, confidential, or otherwise sensitive documents into strips or fine particles. Paper shredder machine is utilized to shred the important documents which are misused by some unauthorized person. There are lots of people who spend their day through rummaging garbage to find personal information like social security number, account number, credit card application and other personal information about company to overcome these issues, paper shredders are used. The Paper Shredder is equipped by using all necessary items and method such as aluminium sheet metal, rivet, and skills in manufacturing machine to cut and bend the parts and etc. The process of development is started from designing the shape of the paper shredder by considering the function as well. In order to produce user friendly product that is suitable to the consumer, consideration to the ergonomic factor is taken into account. It involves the measurement process before the materials are cut into pieces before assemble together by using cutting and bending processes. The paper shredder is needed to test to check whether its mechanism is properly work or not work.\r\nThis project title is \u201cDesign and Fabrication of Paper Shredder\u201d. The project includes small analysis of the paper shredder and fabrication of the paper shredder itself with concerns regarding strength, portability, durability, ergonomic factor and convenience. Test need to be done to verify the strength of the paper shredder cutter before the fabrication process started. It is require more knowledge and skill of analysis. Skill how solve the problem is the most important and need to be improve when this project launched, as in . Shredders range in size and price from small and inexpensive units designed for a certain amount of pages, to large units used by commercial shredding services that cost hundreds of thousands of dollars and can shred millions of documents per hour. While the very smallest shredders may be hand-cranked, most shredders are electrically powered. Shredders over time have added features to improve the shredder user's experience. Now many reject paper that is fed over capacity to prevent jams; others have safety features to reduce risks. Some shredders designed for use in shared workspaces or department copy rooms have noise reduction.\r\n\r\n\r\nDesign and Fabrication of shredder Machine\r\n\r\n&nbsp;\r\nWatch Design Overview Video :\u00a0\r\n\r\nSYSTEM DESIGN\r\nSoftware used for designing is Creo 3.0.Paper shredder machine from design point of view consists of three main parts: machine\r\nconstruction, cutting system, transmission system.\r\nMachine construction: Machine construction consists of stand, bearing support plates, nuts and bolts etc.\r\n\r\n Cutting blade \r\n\r\nCutting system consists of the shafts, cutting blades, washers and gears. The cutting blade is round-shaped blade with 3 (three)\r\ncutting edges, given circle-shaped hole in the middle with keyway, mounted on the main shaft and main shaft move together ,as in .In drawing of cutting blades in Creo 3.0 software, cutting blades are equally divided into certain degree of angle and each\u00a0cutting edge of cutting blade is joined by arc to second cutting edge up to particular length of cutting edge. We design the cutting\u00a0system in such a way that angle between keyway of each cutter blade is 40 degree. And cutting blades are placed in such a manner\u00a0that after first blade apart 40 degree from second blade. This concept used in paper shredder machine. Because of that, power which\u00a0was requiring to rotate the shaft was large. Now that power to rotate the shaft is lesser than previous. Material used for cutting blade\u00a0is EN31 steel.\r\n\r\nMotor:\r\n\r\nElectric motor is electrical device that converts electrical energy into mechanical energy. In certain applications, such as in the\r\ntransportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also\r\nproduce electrical energy from mechanical energy.\r\nMotor Specification:\r\n1) Type-3 Phase Induction motor\r\n2) Input power - 550 watt\/1 HP\r\n3) Input speed - 1405 rpm\r\n4) Input torque - 3.738 Nm\r\n\r\nReference Download Calculation :\u00a0\r\n\r\nhttps:\/\/www.ijraset.com\/fileserve.php?FID=15461","headline":"Design and Fabrication of Paper Shredder Machine","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-18","mainEntityOfPage":"False","dateModified":"February 22, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/02\/Design-and-Fabrication-of-shredder-Machine-Mechanical-Project1-300x211.jpg","height":211,"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/important-topics-list-for-gate-by-sk-mondal/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/02/GATE-MECHANICAL-NOTES-300x108.png')"></div><span class="sr-only">link to Important Topics List For GATE by sk mondal</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/important-topics-list-for-gate-by-sk-mondal/">Important Topics List For GATE by sk mondal</a></p></header><div class="excerpt"><p>Important Topics List For GATE by sk mondal
Following Topics are very important for GATE Examination  Subject wise Priority List
1. Mathematics
2. Manufacturing Science
3. Industrial...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/important-topics-list-for-gate-by-sk-mondal/" aria-label="View Post: Important Topics List For GATE by sk mondal">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Important Topics List For GATE by sk mondal","url":"\/\/www.gunkrazy.com\/important-topics-list-for-gate-by-sk-mondal\/","articleBody":"Important Topics List For GATE by sk mondal\r\nFollowing Topics are very important for GATE Examination\r\n\r\nSubject wise Priority List\r\n1. Mathematics\r\n2. Manufacturing Science\r\n3. Industrial Engineering\r\n4. SOM\r\n5. TOM\r\n6. Design\r\n7. Thermodynamics\r\n8. Fluid Mechanics\r\n9. Heat Transfer\r\n10. RAC\r\n11. Power plant\r\n12. IC Engine\r\n13. Engineering Materials\r\n14. Engineering Mechanics\r\n\r\nGATE MECHANICAL NOTES\r\nImportant topic for GATE :\u00a0\r\n1. Mathematics\r\na) Probability and Statistics\r\nb) Eigen Values and Eigen Vectors\r\nc) Differential Equations\r\nd) Transform Theory\r\ne) Numerical Methods\r\nf) Calculus, Gradient, Multiple Integrals\r\ng) Complex Variables\r\nh) Matrix Algebra\r\ni) Fourier Series\r\nj) Partial Derivatives\r\n\r\n2. Manufacturing Science\r\na) Theory of metal cutting, forces, tool life\r\nb) Rolling calculations\r\nc) Wire drawing and Extrusion Calculations\r\nd) Sheet metal operations, clearance, force, power, shear calculations\r\ne) Lathe, drilling, milling, shaping cutting time calculations\r\nf) Grinding and finishing\r\ng) ECM MRR, feed calculations, EDM theory, comparison of all NTMM\r\nh) NC, CNC, Machine, BLU calculations, upto M &amp; G code\r\ni) Limit, tolerance, fit\r\nj) Jig &amp; Fixture, 3-2-1 principle\r\nk) Welding: V-I Characteristics calculations, Resistance welding calculations\r\nl) Casting: allowances, Riser Design, Sprue Design, Pouring time calculations, Special Castings\r\n\r\n3. Industrial Engineering\r\na) EOQ Models (VIMP)\r\nb) PERT &amp; CPM (VIMP)\r\nc) Queuing Model (VIMP)\r\nd) Forecasting (VIMP)\r\ne) LPP\r\nf) Work Study &amp; Work Measurement (standard time calculations, theriblings symbol)\r\ng) Break even Analysis\r\nh) The Scheduling Problem and Johnson\u2019s Rule\r\ni) Assembly line balancing\r\n\r\n4. SOM \r\na) Principal Stress and Strain (VIMP)\r\nb) Stress and Strain (VIMP)\r\nc) Bending Moment and Shear Force Diagram (VIMP)\r\nd) Torsion\r\ne) Riveted and Welded Joint\r\nf) Spring\r\ng) Theories of Column (Euler method, end conditions)\r\nh) Strain Energy Method (Castigliano\u2019s theory)\r\ni) Theories of failure\r\nj) Thin and Thick cylinder\r\n\r\n5. TOM \r\na) Mechanism (VIMP)\r\nb) Linear Vibration Analysis of Mechanical Systems (VIMP)\r\nc) Gear train (VIMP)\r\nd) Flywheel (Coefficient of Fluctuation of speed, Coefficient of Fluctuation of energy)\r\n\r\n6. Design\r\na) Rolling Contact Bearings, Load-life Relationship\r\nb) Sliding contact bearing, Modes of Lubrication, Sommerfeld Number\r\nc) Fluctuating Load Consideration for Design\r\nd) Clutch , Brake\r\n\r\n7. Thermodynamics\r\na) Basic Concepts\r\nb) Application of First law\r\nc) Entropy, Availability\r\nd) Pure Substance (VIMP)\r\ne) Gases and Gas mixture\r\nf) Thermodynamics relations\r\n\r\n8. Fluid Mechanics\r\na) Properties of fluid\r\nb) Pressure measurement, manometers\r\nc) Fluid kinematics (VIMP)\r\nd) Bernoulli\u2019s Equation\r\ne) Venturimeter\r\nf) Boundary Layer, Thermal Boundary Layer\r\ng) Compressible Flow\r\nh) Hydraulic Turbine\r\ni) Centrifugal Pump\r\n\r\n9. Heat Transfer \r\na) Conduction\r\nb) Critical Thickness of Insulation\r\nc) Unsteady Conduction (Lumped Parameter Analysis)\r\nd) Heat Exchangers (LMTD, NTU)\r\ne) Radiation (The Stefan-Boltzmann Law, Shape Factor Algebra, Heat Exchange between Nonblack Bodies)\r\n\r\n10. RAC \r\na) Heat engine, heat pump, refrigerator (VIMP)\r\nb) Vapour Compression Systems\r\nc) Psychrometry (VIMP)\r\n\r\n11. Power plant \r\na) Steam Cycle (VIMP)\r\nb) Gas Cycle\r\nc) Compressor\r\n\r\n12. IC Engine\r\na) Gas Power Cycles (All) (VIMP)\r\nb) IC Engine Performances\r\nc) Octane number, cetane number\r\n\r\n13. Engineering materials\r\na) Iron-carbon Equilibrium diagram, TTT diagram,\r\nb) Heat treatment,\r\nc) Crystal structure &amp; crystal defects\r\n\r\n14. Engineering Mechanics\r\na) Equilibrium\r\nb) Truss","headline":"Important Topics List For GATE by sk mondal","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-17","mainEntityOfPage":"False","dateModified":"February 22, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/02\/GATE-MECHANICAL-NOTES-300x108.png","height":108,"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/resume-tips-how-to-make-a-resume-for-first-job/" rel="nofollow"><div class="image-container" style="background-image: url('//www.gunkrazy.com/wp-content/uploads/2019/02/resume-writing-tips-300x175.jpg')"></div><span class="sr-only">link to Resume Tips &#8211; how to make a resume for first job</span></a><div class="copy-container"><header><p><a style="color: #ff392e!important" href="//www.gunkrazy.com/resume-tips-how-to-make-a-resume-for-first-job/">Resume Tips &#8211; how to make a resume for first job</a></p></header><div class="excerpt"><p>Resume Tips - how to make a resume for first job
Resume writing tips
While there are a few commonly used resume styles, your resume should reflect your unique education, experience and relevant...</p><div class="button-container"><a rel="nofollow" class="button reverse" href="//www.gunkrazy.com/resume-tips-how-to-make-a-resume-for-first-job/" aria-label="View Post: Resume Tips &#8211; how to make a resume for first job">View Post</a></div></div></div></article> <script type="application/ld+json">{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","name":"Resume Tips &#8211; how to make a resume for first job","url":"\/\/www.gunkrazy.com\/resume-tips-how-to-make-a-resume-for-first-job\/","articleBody":"Resume Tips - how to make a resume for first job\r\nResume writing tips\r\nWhile there are a few commonly used resume styles, your resume should reflect your unique education, experience and relevant skills. You might consider having multiple versions of your resume tailored to the jobs you\u2019re applying for. Here are a few key resume writing tips that will help you organize and design your resume.\r\n\r\nresume writing tips\r\nA resume is a representation of your candidature. A person should know about you completely after reading your resume.\r\n\r\n\r\n \tStarting with your\u00a0Name, Contact details, may be a photograph of yours(which is not mandatory).\r\n \tYour\u00a0Career Objective\u00a0(what you want to be in your career) Eg: To work in a firm with a professional work driven environment where I can utilize and apply my knowledge, skills which would enable me to grow while fulfilling organizational goals. or try a simple one that fits in one line or 2 at max.\r\n \tEducation\u00a0(this should be mentioned in reverse cronological order, like engineering, Intermediate or +2, 10th etc)\r\n \tYour\u00a0Subjects of interest, (atleast 1 -3)\r\n \tProfessional skills\u00a0(like softwares used in mechanical domain) Eg: 1 Cad software, 1 Simulation &amp; analysis software, 1 Programming language, 1 scripting tool etc\r\n \tProjects, research works, case studies, practical training, workshops, Industrial visits etc\r\n \tInternships\u00a0(Mention this separately as it gives you an edge over other candidates)\r\n \tAchievements\u00a0( Eg: stood 1st in a competition)\r\n \tCo-Curricular activities\u00a0(All the workshops attended, technical competitions, seminars, conferences etc)\r\n \tExtra Curricular activities\u00a0(Eg: working for your college fest, volunteering an activity, holding a position in your college clubs and associations)\r\n \tHobbies\u00a0(This is necessary as it reveals the other part of a candidate)\r\n \tStrengths\u00a0(or mention it as Personality traits; don\u2019t boast yourself; keep it simple and straight to the point)\r\n \tLanguages known\u00a0(If one knows more languages, he can work in multiple locations and survive)\r\n \tReferences\u00a0(if any by one of your professors or industry professionals)\r\n \tDeclaration\u00a0(This is not necessary, unless asked to mention)\r\n\r\nThis is the standard format of a resume which recruiters look for, in case of freshers.","headline":"Resume Tips &#8211; how to make a resume for first job","author":{"@type":"Person","name":"Sachin Thorat","url":"\/\/www.gunkrazy.com\/"},"datePublished":"2019-02-16","mainEntityOfPage":"False","dateModified":"February 22, 2020","image":{"@type":"ImageObject","url":"\/\/www.gunkrazy.com\/wp-content\/uploads\/2019\/02\/resume-writing-tips-300x175.jpg","height":175,"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> <nav class="pagination-wrapper" aria-label="article pagination"> <a class="prev page-numbers" href="?page_num=129">&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=128"><span class="screen-reader-text">Page </span>128</a> <a class="page-numbers" href="?page_num=129"><span class="screen-reader-text">Page </span>129</a> <span aria-current="page" class="page-numbers current"><span class="screen-reader-text">Page </span>130</span> <a class="page-numbers" href="?page_num=131"><span class="screen-reader-text">Page </span>131</a> <a class="page-numbers" href="?page_num=132"><span class="screen-reader-text">Page </span>132</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=131">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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