Multi Point Cutting Tools Viva Questions and Answers

Q1. What are multi-point cutting tools?

A: Multi-point cutting tools are tools that have multiple cutting edges, such as milling cutters, drills, reamers, and broaches.

Q2. What are the advantages of using multi-point cutting tools?

A: The advantages of using multi-point cutting tools include higher productivity, better surface finish, longer tool life, and lower cutting forces.

Q3. What is the difference between a single-point cutting tool and a multi-point cutting tool?

A: A single-point cutting tool has only one cutting edge, while a multi-point cutting tool has multiple cutting edges.

Q4. What are some examples of multi-point cutting tools?

A: Examples of multi-point cutting tools include milling cutters, drills, reamers, broaches, taps, and dies.

Q5. How are multi-point cutting tools classified?

A: Multi-point cutting tools are classified based on their shape, size, and the type of cutting operation they are used for.

Q6. What are the different types of milling cutters?

A: The different types of milling cutters include end mills, ball nose mills, face mills, and slot drills.

Q7. What is the purpose of a drill?

A: A drill is used to create a hole in a workpiece.

Q8. What is the difference between a drill and a reamer?

A: A drill is used to create a hole in a workpiece, while a reamer is used to enlarge and finish a previously drilled hole.

Q9. What is a broach?

A: A broach is a multi-point cutting tool that is used to create a series of progressively larger holes or shapes in a workpiece.

Q10. How are multi-point cutting tools sharpened?

A: Multi-point cutting tools can be sharpened using a grinding wheel or a sharpening stone. The tool is mounted in a fixture and rotated while the grinding wheel or stone is applied to the cutting edge.

Q11. What is the function of a tap?

A: A tap is used to create internal threads in a workpiece, typically in a hole that has been previously drilled.

Q12. What is a die?

A: A die is used to create external threads on a cylindrical workpiece.

Q13. What are the advantages of using a carbide tool insert?

A: Carbide tool inserts have high hardness and wear resistance, which leads to longer tool life, better surface finish, and higher productivity.

Q14. What are the advantages of using a coated cutting tool?

A: Coated cutting tools have a thin layer of coating on their surface, which provides additional hardness, lubricity, and wear resistance. This results in longer tool life, improved surface finish, and higher productivity.

Q15. What is the difference between a roughing end mill and a finishing end mill?

A: A roughing end mill has a coarse pitch and is used for removing material quickly, while a finishing end mill has a fine pitch and is used for achieving a smooth surface finish.

Q16. What is the difference between a twist drill and a center drill?

A: A twist drill is used to create a hole in a workpiece, while a center drill is used to create a small pilot hole for a larger drill bit to follow.

Q17. What is the purpose of a countersink?

A: A countersink is used to create a cone-shaped recess in a workpiece, typically to allow a screw head to sit flush with the surface.

Q18. What is the difference between a reamer and a boring tool?

A: A reamer is used to enlarge and finish a previously drilled hole, while a boring tool is used to create a hole of a specific diameter and depth.

Q19. What is a chamfering tool?

A: A chamfering tool is used to create a beveled edge on a workpiece, typically to remove sharp corners or to prepare the edge for welding or bonding.

Q20. What is a broaching machine?

A: A broaching machine is a specialized machine tool that is used to perform the broaching process, which involves using a broach to create a series of progressively larger holes or shapes in a workpiece.

Q21. What is the difference between a straight flute drill and a spiral flute drill?

A: A straight flute drill has straight flutes that run parallel to the axis of the drill, while a spiral flute drill has flutes that twist around the axis of the drill. Spiral flute drills are better for chip evacuation and are typically used for deeper holes.

Q22. What is a face mill?

A: A face mill is a type of milling cutter that is used to create a flat surface on a workpiece, typically by cutting across the entire surface in a single pass.

Q23. What is a broach holder?

A: A broach holder is a device that is used to hold and support a broach during the broaching process, typically by mounting it in a hydraulic or mechanical press.

Q24. What is a reamer holder?

A: A reamer holder is a device that is used to hold a reamer during the reaming process, typically by mounting it in a machine spindle.

Q26. What is a die holder?

A: A die holder is a device that is used to hold a die during the threading process, typically by mounting it in a machine spindle.

Q27. What is a counterbore?

A: A counterbore is a cylindrical recess that is created in a workpiece, typically to allow the head of a bolt or screw to sit below the surface.

Q28. What is a spot drill?

A: A spot drill is a type of drill bit that is used to create a small pilot hole in a workpiece, typically to improve accuracy and reduce the likelihood of the larger drill bit wandering.

Q29. What is the difference between a left-hand drill bit and a right-hand drill bit?

A: A left-hand drill bit is designed to rotate counterclockwise, while a right-hand drill bit is designed to rotate clockwise. Left-hand drill bits are typically used for drilling out broken bolts or studs.

Q30. What is a deburring tool?

A: A deburring tool is used to remove burrs or sharp edges from a workpiece, typically after it has been machined or cut.

Q31. What is the difference between a milling cutter and an end mill?

A: A milling cutter is a general term used to describe any type of cutting tool used in milling operations, while an end mill specifically refers to a type of milling cutter that has cutting teeth on the end of a cylindrical body.

Q32. What is a tap drill?

A: A tap drill is a drill bit that is used to create a hole in a workpiece that is the correct size for tapping with a particular size of tap.

Q33. What is a thread pitch gauge?

A: A thread pitch gauge is a measuring tool that is used to determine the pitch of threads on a workpiece, typically by matching the teeth of the gauge with the threads on the workpiece.

Q34. What is a boring bar?

A: A boring bar is a tool that is used to create a hole in a workpiece that is larger in diameter than the cutting tool itself, typically by using a single-point cutting tool mounted on the end of a bar.

Q35. What is the difference between a roughing operation and a finishing operation?

A: A roughing operation is used to remove large amounts of material quickly, typically with a cutting tool that has a coarse pitch. A finishing operation is used to remove small amounts of material to achieve a smooth surface finish, typically with a cutting tool that has a fine pitch.

Q36. What is a tap drill chart?

A: A tap drill chart is a reference chart that provides the recommended drill bit size for creating holes that are the correct size for tapping with a particular size of tap.

Q37. What is a thread relief?

A: A thread relief is a small groove or channel that is created at the base of a thread, typically to reduce stress and increase the strength of the thread.

Q38. What is a countersink drill bit?

A: A countersink drill bit is a type of drill bit that is used to create a conical recess in a workpiece, typically to allow a screw head to sit flush with the surface.

Q39. What is a trepanning tool?

A: A trepanning tool is a cutting tool that is used to create a large-diameter hole in a workpiece, typically by cutting out a circular section of material.

Q40. What is a spot-facing tool?

A: A spot-facing tool is a cutting tool that is used to create a flat surface on a workpiece, typically to provide a mating surface for a bolt or screw head.

Q41. What is a chamfering tool?

A: A chamfering tool is a cutting tool that is used to create a beveled edge on a workpiece, typically to remove sharp edges or to provide a decorative effect.

Q42. What is a counterbore tool?

A: A counterbore tool is a cutting tool that is used to create a cylindrical recess in a workpiece, typically to allow the head of a bolt or screw to sit below the surface.

Q43. What is a trepanning drill?

A: A trepanning drill is a type of drill bit that is used to create a large-diameter hole in a workpiece, typically by cutting out a circular section of material.

Q44. What is a reaming operation?

A: A reaming operation is a machining operation that is used to create a smooth, accurate hole in a workpiece, typically by using a cutting tool called a reamer.

Q45. What is a step drill bit?

A: A step drill bit is a type of drill bit that has multiple steps or stages, each of which creates a progressively larger hole in a workpiece.

Q46. What is a thread mill?

A: A thread mill is a cutting tool that is used to create internal threads in a workpiece, typically by using a helical path to cut the threads.

Q47. What is a center drill?

A: A center drill is a type of drill bit that is used to create a small pilot hole in a workpiece, typically to provide a starting point for a larger drill bit.

Q48. What is a spot weld cutter?

A: A spot weld cutter is a cutting tool that is used to remove spot welds from a workpiece, typically by creating a small hole in the weld that allows it to be separated from the surrounding material.

Q49. What is a grooving tool?

A: A grooving tool is a cutting tool that is used to create grooves or channels in a workpiece, typically for the purpose of providing clearance for other components or for decorative purposes.

Q50. What is a milling machine?

A: A milling machine is a machine tool that uses a rotating cutter to remove material from a workpiece, typically by moving it along multiple axes to create complex shapes or features.

Q51. What is a tap wrench?

A: A tap wrench is a tool that is used to hold a tap securely while it is being turned, typically by hand or with a tap handle.

Q52. What is a die?

A: A die is a cutting tool that is used to create external threads on a workpiece, typically by pressing the die onto the workpiece and turning it.

Q53. What is a hex key?

A: A hex key, also known as an Allen wrench, is a small tool that is used to turn screws or bolts with a hexagonal socket.

Q54. What is a broach?

A: A broach is a cutting tool that is used to create complex shapes or features in a workpiece, typically by using a series of teeth or cutting edges to remove material.

Q55. What is a tap and die set?

A: A tap and die set is a collection of cutting tools that are used to create internal and external threads on a workpiece, typically consisting of various sizes of taps, dies, and other related tools.

Q56. What is a countersink tool?

A: A countersink tool is a cutting tool that is used to create a conical recess in a workpiece, typically to allow a screw head to sit flush with the surface.

Q58. What is a centering drill?

A: A centering drill is a type of drill bit that is used to create a small pilot hole in a workpiece, typically to provide a starting point for a larger drill bit and to ensure that the hole is centered accurately.

Q59. What is a cutting speed?

A: Cutting speed refers to the speed at which a cutting tool is moved through a workpiece, typically measured in surface feet per minute (SFM).

Q60. What is a feed rate?

A: Feed rate refers to the rate at which a cutting tool is fed into a workpiece, typically measured in inches per minute (IPM).

Q61. What is a boring bar?

A: A boring bar is a cutting tool that is used to enlarge or finish a hole in a workpiece, typically by using a single-point cutting tool that is mounted on a bar.

Q62. What is a face mill?

A: A face mill is a cutting tool that is used to create a flat surface on the top of a workpiece, typically by using a rotating cutter with multiple inserts or teeth.

Q63. What is a thread gauge?

A: A thread gauge is a tool that is used to measure the size and pitch of external and internal threads on a workpiece.

Q64. What is a deburring tool?

A: A deburring tool is a cutting tool that is used to remove burrs or sharp edges from a workpiece, typically by using a rotating cutter or abrasive.

Q65. What is a saw blade?

A: A saw blade is a cutting tool that is used to cut through a workpiece, typically by using a toothed edge or abrasive material.

Q66. What is a diamond blade?

A: A diamond blade is a cutting tool that is used to cut through hard materials such as stone or concrete, typically by using diamond particles embedded in the cutting edge.

Q67. What is a grinding wheel?

A: A grinding wheel is a cutting tool that is used to remove material from a workpiece, typically by using abrasive particles bonded together in a wheel shape.

Q68. What is a honing stone?

A: A honing stone is a cutting tool that is used to create a smooth, polished surface on a workpiece, typically by using abrasive particles embedded in a stone.

Q69. What is a lapping tool?

A: A lapping tool is a cutting tool that is used to create a precise, flat surface on a workpiece, typically by using a slurry of abrasive particles and a rotating lap.