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Flashcards

IE 21 LE2

Suzzane Castro IE 21 LE 2 N/A English 123 cards

IE 21 LE2

Cards in this deck (123)

  1. 1—horizontal milling machinehorizontal milling machine
  2. 2—vertical milling machinevertical milling machine
  3. 3surface is generated by progressive chip removal; flat surfaces are producedmilling
  4. 4most basic type of milling machinecolumn-and-knee type
  5. 5two types of milling processesperipheral (slab milling)
    face
  6. 6type of milling in which axis of rotation perpendicular to the workpiece surfaceface milling
  7. 7—
  8. 8—
  9. 9—
  10. 10—
  11. 11Milling Methodsup (conventional milling)
    down
  12. 12cutter rotates against the direction of feedup milling
  13. 13cutter rotation is in the same direction as the feed rate.down milling
  14. 14generates interior cylindrical surfaces in the form of holes with a tool with two cutting edges.drilling
  15. 15—drillingdrilling
  16. 16—twist drilltwist drill
  17. 17—combination center drill and countersinkcombination center drill and countersink
  18. 18—spade drillspade drill
  19. 19—deep-hole drills and gundrills
    - when deep holes are to be drilled    deep-hole drills and gundrills - when deep holes are to be drilled
  20. 20—hole cutter or hole saw
    - used to make larger holes in thin material    hole cutter or hole saw - used to make larger holes in thin material
  21. 21—drill chuckdrill chuck
  22. 22Workholding Device for Drillingvise or jigs
  23. 23hole-making process1. centering and countersinking
    2. drilling with a standard twist drill
    3. truing hole by boring
    4. final sizing and finishing with a reamer
  24. 24process of enlarging a hole that has already been drilled or cast, by means of a single-point cutting toolboring
  25. 25—boringboring
  26. 26—reamingreaming
  27. 27bring holes to a more exact size and better finish by slightly enlarging an existing holereaming
  28. 28layer of material of desired width and depth usually in one stroke by a slender rod or bar type cutter having a series of cutting edges with gradually increasing protusionbroaching
  29. 29—broachingbroaching
  30. 30broach is pushed through the portion of workpiece to the machinedvertical push typebroach is pushed through the portion of workpiece to the machined
  31. 31broach is pulled through the workbroach is pulled through the work
  32. 32involves the interaction of abrasive grits with the workpiece at high cutting speeds and shallow penetration depthsabrasive machining
  33. 33natural abrasivesemery
    quartz
    diamond
    corundum
  34. 34artificial abrasivesaluminum oxide
    silicon carbide
    synthetic diamond
    cubic boron nitride
  35. 35employs an abrasive product, usually a rotating wheel brought into controlled contact with a work surfacegrinding
  36. 36The workpiece rotates about a fixed axis and the surfaces machined are concentric to that axis of rotation; produces an external surface that may be either straight, tapered, or contouredcylindrical grindingThe workpiece rotates about a fixed axis and the surfaces machined are concentric to that axis of rotation; produces an external surface ...
  37. 37finishes the inside of a previously drilled, reamed, or bored hole, using small grinding wheelsinternal grindingfinishes the inside of a previously drilled, reamed, or bored hole, using small grinding wheels
  38. 38The workpiece rotates between a grinding wheel and a regulating drive wheel.centerless grindingThe workpiece rotates between a grinding wheel and a regulating drive wheel.
  39. 39produces flat, angular, or contoured surfaces by feeding work in a horizontal plane beneath a rotating grinding wheelsurface grindingproduces flat, angular, or contoured surfaces by feeding work in a horizontal plane beneath a rotating grinding wheel
  40. 40stock-removal process that uses fine abrasive stones to remove very small amounts of metal; size and finish bored holes, remove common errors left by boring, or remove the tool marks left by grinding.honingstock-removal process that uses fine abrasive stones to remove very small amounts of metal; size and finish bored holes, remove common er...
  41. 41variation of honing that is typically used on flat surfaces.superfinishingvariation of honing that is typically used on flat surfaces.
  42. 42abrasive surface finishing process wherein fine abrasive particles are charged (caused to become embedded) into a soft materiallappingabrasive surface finishing process wherein fine abrasive particles are charged (caused to become embedded) into a soft material
  43. 43employs an ultrasonically vibrating tool to impel the abrasives in a slurry at high velocity against the workpieceultrasonic machiningemploys an ultrasonically vibrating tool to impel the abrasives in a slurry at high velocity against the workpiece
  44. 44high- velocity fluid jet impinging on the workpiece to perform a slitting operationwaterjet cuttinghigh- velocity fluid jet impinging on the workpiece to perform a slitting operation
  45. 45focused jet of abrasives and is similar in many respects to AWC, with the exception that momentum is transferred to the abrasive particles by a jet of inert gas.abrasive jet machiningfocused jet of abrasives and is similar in many respects to AWC, with the exception that momentum is transferred to the abrasive particle...
  46. 46method of controlling the motion of machine components by means of numbers or coded instructionsnumerical control; the use of computer - computer numerical control
  47. 47component of CNCpart program: detailed set of commands to be followed by the machine tool
    machine control unit: a microcomputer that stores the program
    machine tool: the device that performs the actual operations under the control of the MCU
  48. 48material is removed from a workpiece by selectively exposing it to a chemical reagent or etchantchemical machining
  49. 49steps in chemical machining1. cleaning
    2. masking
    3. etching
    4. stripping
  50. 50removes material by anodic dissolution with a rapidly flowing electrolyteelectrochemical machining;
    tool - cathode
    workpiece - anode
  51. 51—electrochemical machiningelectrochemical machining
  52. 52remove metal by discharging electric current from a pulsating DC power supply across a thin inter-electrode gap between the tool and the workpiece.electric discharge machining
  53. 53—electric discharge machiningelectric discharge machining
  54. 54types of thermal machining1. electron-beam machining
    2. laser-beam machining
    3. plasma arc cutting
  55. 55uses a beam of high-energy electrons focused on the workpiece to melt and vaporize metalelectron-beam machininguses a beam of high-energy electrons focused on the workpiece to melt and vaporize metal
  56. 56uses an intensely focused, coherent stream of light to vaporize or chemically ablate materialsleaser-beam machininguses an intensely focused, coherent stream of light to vaporize or chemically ablate materials
  57. 57uses a superheated stream of electrically ionized gas to melt and remove materialplasma arc cuttinguses a superheated stream of electrically ionized gas to melt and remove material
  58. 58refers to machining threads in drilled holestapping
  59. 59a ridge of uniform section in the form of a helix on the external or internal surface of a cylinder, or in the form of a conical spiral on the external or internal surface of a conesa ridge of uniform section in the form of a helix on the external or internal surface of a cylinder, or in the form of a conical spiral o...
  60. 60used in tapping operations on machine tools, such as lathes, drill presses, and special tapping machinessolid taps
  61. 61the part of the lathe that determines the pitch or number of threads per inch that are being cut.lead screw
  62. 62produces threads with the circular ramping movement of a rotating toolthread milling
  63. 63—thread millingthread milling
  64. 64cold-forming process operation in which the threads are formed by rolling a thread blank between hardened dies that cause the metal to flow radially into the desired shape.thread rollingcold-forming process operation in which the threads are formed by rolling a thread blank between hardened dies that cause the metal to fl...
  65. 65can produce very accurate threads, and it also permits threads to be produced in hardened materials.thread grindingcan produce very accurate threads, and it also permits threads to be produced in hardened materials.
  66. 66transmit power or motion mechanically between parallel, intersecting, or nonintersecting shaftsgears
  67. 67the cutter and the gear blank must be attached rigidly to their respective shafts, and the two shafts must be interconnected by suitable gearing so that the cutter and the blank rotate positively with respect to each other.gear shapingthe cutter and the gear blank must be attached rigidly to their respective shafts, and the two shafts must be interconnected by suitable ...
  68. 68the teeth or splines are progressively cut into the workpiece by a series of cuts made by a cutting toolgear hobbingthe teeth or splines are progressively cut into the workpiece by a series of cuts made by a cutting tool
  69. 69—gear cuttinggear cutting
  70. 70All the tooth spaces are cut simultaneously, and the tooth is formed progressively.broaching of gearsAll the tooth spaces are cut simultaneously, and the tooth is formed progressively.
  71. 71the teeth cannot be formed in a single rotation of the forming rolls; the rolls are fed inward gradually during several revolutions.cold-roll forming of gearsthe teeth cannot be formed in a single rotation of the forming rolls; the rolls are fed inward gradually during several revolutions.
  72. 72used to obtain very accurate teeth on hardened gearsgear grindingused to obtain very accurate teeth on hardened gears
  73. 73Gear Castingsand-cast gears: rough surfaces, not accurate
    die-cast gears: more accurate, fine surface finish    Gear Casting
  74. 74—gear forging
    Gear teeth forged parts made by hot and cold forging processes can eliminate teeth machining    gear forging Gear teeth forged parts made by hot and cold forging processes can eliminate teeth machining
  75. 75High-quality gears, both as to dimensional accuracy and surface quality, can be made by this process. Usually, this process is employed only for small sizes, ordinarily less than 1 in. in diameter.powder metallurgy of gears
  76. 76refers to any device that is used to a secure a workpiece and hold it in place against the forces of machining.workholding device
  77. 772 primary functions of workholding deviceslocating: orienting and positioning
    clamping: holding or maintaining
  78. 78common general-purpose workholding devicesclamp
    vise
    chuck
  79. 79used for machine setup. They are commonly used in milling machines to bolt down the workpiece on the table using the T-slots.clampused for machine setup. They are commonly used in milling machines to bolt down the workpiece on the table using the T-slots.
  80. 80hold a piece of work when operating a milling machine, drill press, or grinding machine; has two parallel jaws, one fixed and the other movablevisehold a piece of work when operating a milling machine, drill press, or grinding machine; has two parallel jaws, one fixed and the other m...
  81. 81workholding device with three or four jaws that is commonly used to hold workpieces that will be rotated on a lathe.chuck; used in turning (no need for other devices)workholding device with three or four jaws that is commonly used to hold workpieces that will be rotated on a lathe.
  82. 82holds and positions the workpiece; locates or guides the tool relative to the workpiece and usually not fixed on the machining table; usually lightly constructedjig
  83. 83—jigjig
  84. 84workholding device that holds work during machining; but doesn’t guide locate or positionfixture
  85. 85—fixturefixture
  86. 86permanent joining of two metals, through localized coalescence, resulting from a suitable combination of temperature, pressure, and metallurgical conditionswelding
  87. 87metals being joined are melted at the point where welding occurs, and no pressure is involvedfusion welding
  88. 88made directly onto a flat surface and therefore require no edge preparation. Since the penetration depth is limited, they are used primarily for joining thin sheets of metal, building up surfaces, and depositing hard-facingbead weldsmade directly onto a flat surface and therefore require no edge preparation. Since the penetration depth is limited, they are used primar...
  89. 89used when full thickness strength is desired on thicker material.groove weldsused when full thickness strength is desired on thicker material.
  90. 90used for tee, lap, and corner joints and require no special edge preparationfillet weldsused for tee, lap, and corner joints and require no special edge preparation
  91. 91one part on top of another and are often used to replace rivets or bolts. A hole is made in the top plate and welding is started at the bottom of this holeplug weldsone part on top of another and are often used to replace rivets or bolts. A hole is made in the top plate and welding is started at the b...
  92. 92refers to a group of welding processes that use the flame produced by the combustion of a fuel gas and oxygen as the source of heatoxyfuel-gas welding (ofw)
  93. 93types of flamesneutral flame
    oxidizing flame
    carburizing or reducing flame
  94. 94—oxyfuel-gas welding (ofw)oxyfuel-gas welding (ofw)
  95. 95—oxyfuel-gas cuttingoxyfuel-gas cutting
  96. 96uses a concentrated heat source from the electric arc between two electrodes resulting in a very high temperature approaching 7000oFarc weldinguses a concentrated heat source from the electric arc between two electrodes resulting in a very high temperature approaching 7000oF
  97. 97both heat and pressure are utilized in producing coalescenceresistance welding
  98. 98simplest and most widely used type of resistance weldingresistance spot weldingsimplest and most widely used type of resistance welding
  99. 99overlapping spot welds; two rotating disks are used as electrodes.resistance seam weldingoverlapping spot welds; two rotating disks are used as electrodes.
  100. 100a dimple is embossed into one of the workpieces at the location where a weld is desiredresistance projection weldinga dimple is embossed into one of the workpieces at the location where a weld is desired
  101. 101permanent joining of similar or dissimilar metals or ceramics through the use of heat and a filler metal whose melting temperature is above 450°C (840°F) but below the melting point of the materials being joined.brazing
  102. 102differences of brazing from weldingcomposition of brazing alloy is significantly different from that of the base metal.
    strength of the brazing alloy is usually lower than that of the base metal.
    melting point of the brazing alloy is lower than that of the base metal, so none of the base metal is melted.
    Bonding requires capillary action
  103. 103for brazing steel and other high-melting-point materials, such as high- speed steel and tungsten carbideCopper and copper alloys
  104. 104can be used for brazing titaniumpure silver
  105. 105used for brazing aluminum and other aluminum alloysaluminum-silicon alloys
  106. 106attractive for joining assemblies that will be subjected to elevated-temperature service conditions and/or extremely corrosive environments.nickel and cobalt based alloys
  107. 107braze other types of magnesium.magnesium alloys
  108. 108number of assemblies can be brazed simultaneously in controlled atmosphere or vacuum furnaces provided that the flux and filler metal can be preloaded into the joints and the part can endure uniform heating.furnace brazing
  109. 109parts are preheated and then dipped in a bath of molten salt that is maintained at a temperature slightly above the melting point of the brazing metal.salt-bath brazing
  110. 110assemblies are immersed in a bath of molten brazing metal; braze metal will usually coat the entire workpiecedip brazing
  111. 111utilizes high-frequency induction currents as the source of heat and is therefore limited to the joining of electrically conductive materials.induction brazing
  112. 112produce relatively simple joints in metals with high electrical conductivityresistance brazing
  113. 113brazing-type operation where the filler metal has a melting temperature below 450°Csoldering
  114. 114nonmetallic material is used to fill the gap and create a joint between two surfaces. The actual adhesives span a wide range of material types and forms, including thermoplastic resins, thermosetting resins, artificial elastomers, and even some ceramics.adhesive bonding
  115. 115oldest, most common, and most diverse of the adhesive systemsepoxies
  116. 116liquid monomers that polymerize when spread into a thin film between two surfacesCyanoacrylates (superglues)
  117. 117one - component, thermosetting, polyester acrylics that remain liquid when exposed to air; In the presence of iron or copper, it polymerizes into a bonding -type resin, without the need for elevated temperature.anaerobics
  118. 118adhesives are a large and diverse family of polymers that are generally targeted for applications that involve temperatures below 65°Curethane
  119. 119widely used, cost effective means of joining, which is particularly suitable for thin sheet sections; utilize a variety of fasteners including nuts and bolts, screws and rivets, or mechanical interlocks to assemble materials without heating.mechanical fastening
  120. 120formed areas of a component that interfere or interlock with other components of the assembly; they are most commonly found in sheet metal productsintegral fastenersformed areas of a component that interfere or interlock with other components of the assembly; they are most commonly found in sheet meta...
  121. 121separate pieces whose function is to join the primary componentsdiscrete fastenersseparate pieces whose function is to join the primary components
  122. 122dimensional change is introduced to one or both of the components by heating or coolingShrink and Expansion Fitsdimensional change is introduced to one or both of the components by heating or cooling
  123. 123similar to shrink and expansion fits, but the results are obtained through mechanical force instead of differential temperatures.press fitssimilar to shrink and expansion fits, but the results are obtained through mechanical force instead of differential temperatures.

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N/A IE 21 LE 2 Flashcards on IE 21 LE2, created by Suzzane Castro on 23/11/2022.
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Suzzane Castro
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