Machinist Program: Lathe Attachments and Accessories
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Questions and Answers

What is the primary function of a Steady Rest?

  • To support long workpieces when a tailstock centre cannot be used (correct)
  • To cut tapers on the lathe
  • To machine cylindrical parts
  • To grind internal and external surfaces

    • What is the purpose of a Follower Rest?

  • To grind internal and external surfaces
  • To machine cylindrical parts
  • To support cutting short work pieces
  • To support cutting long slender work pieces (correct)

    • What is the function of the Cross Feed Screw in the Telescoping Taper Attachment?

  • To carry the cross slide with it and thus cut a taper to a selected angle (correct)
  • To machine cylindrical parts
  • To set the depth of cut
  • To connect to the sliding block

    • What is the purpose of a Tool Post Grinder?

    <p>To turn a standard lathe into a versatile, accurate, internal and external grinder</p> Signup and view all the answers

    What is the advantage of using a Telescoping Taper Attachment?

    <p>It allows the operator to produce tapers with extreme accuracy</p> Signup and view all the answers

    What is the purpose of a Mandrel?

    <p>To hold the workpiece securely between centers</p> Signup and view all the answers

    What is the primary function of an Attachment on a Lathe?

    <p>To provide an additional method of machining a workpiece</p> Signup and view all the answers

    What is the purpose of the Thread Chasing Dial?

    <p>To chase threads on a workpiece</p> Signup and view all the answers

    What is the purpose of a Turret Attachment?

    <p>To provide an additional method of machining a workpiece</p> Signup and view all the answers

    What is the purpose of a Stop?

    <p>To provide a fixed reference point for machining operations</p> Signup and view all the answers

    What is the main purpose of a Follower Rest?

    <p>To prevent the workpiece from deflecting away from the tool</p> Signup and view all the answers

    What type of mandrel is used to turn parts such as bushings and pulleys?

    <p>Solid mandrel</p> Signup and view all the answers

    What is the primary function of a Cats Head?

    <p>To support non-round workpieces</p> Signup and view all the answers

    What type of knurl is available in Fine, Medium, and Large?

    <p>Diamond knurl</p> Signup and view all the answers

    Which type of mandrel is used when multiple parts are being machined?

    <p>Gang mandrel</p> Signup and view all the answers

    What is the purpose of a Threaded Mandrel?

    <p>To machine parts with a matching internal thread</p> Signup and view all the answers

    What is the characteristic of a Solid Mandrel?

    <p>Has a taper per foot of 0.006 - 0.008</p> Signup and view all the answers

    What is the purpose of Knurling?

    <p>To increase the diameter of a shaft or bearing for a quick repair</p> Signup and view all the answers

    What type of knurl has ridges that run parallel to the axis of the work?

    <p>Straight knurl</p> Signup and view all the answers

    Which type of rest is mounted on the carriage and moves with the cutting tool?

    <p>Follower Rest</p> Signup and view all the answers

    What is the main advantage of using a Telescoping Taper Attachment?

    <p>It enables the operator to produce tapers with extreme accuracy</p> Signup and view all the answers

    What type of grinder can be used to grind internal and external cylindrical parts?

    <p>Tool Post Grinder</p> Signup and view all the answers

    What is the primary purpose of a Steady Rest?

    <p>To support long work when a tailstock centre cannot be used</p> Signup and view all the answers

    What is the purpose of the Cross Feed Screw in the Telescoping Taper Attachment?

    <p>To move the cross slide</p> Signup and view all the answers

    What type of rest is used to support long slender workpieces?

    <p>Follower Rest</p> Signup and view all the answers

    What is the primary function of an Attachment on a Lathe?

    <p>To provide additional functions to the lathe</p> Signup and view all the answers

    What is the purpose of the Thread Chasing Dial?

    <p>To chase threads on a lathe</p> Signup and view all the answers

    What is the purpose of a Turret Attachment?

    <p>To provide additional functions to the lathe</p> Signup and view all the answers

    What is the purpose of a Stop?

    <p>To limit the movement of the carriage</p> Signup and view all the answers

    What is the purpose of turning between centers on a lathe?

    <p>To turn long internal work (deep bores)</p> Signup and view all the answers

    What is the main purpose of a Follower Rest on a lathe?

    <p>To prevent the workpiece from deflecting away from the tool</p> Signup and view all the answers

    What is the characteristic of a Solid Mandrel?

    <p>It has a taper per foot of 0.006 - 0.008</p> Signup and view all the answers

    What is the purpose of a Cat's Head?

    <p>To support a non-round workpiece rotating in a Steady Rest</p> Signup and view all the answers

    What type of Knurl has ridges that run parallel to the axis of the work?

    <p>Straight Knurl</p> Signup and view all the answers

    What is the purpose of a Mandrel?

    <p>To grip a workpiece by the bore to permit the outside diameter to be machined</p> Signup and view all the answers

    What type of Mandrel is used to machine multiple parts at once?

    <p>Gang Mandrel</p> Signup and view all the answers

    What is the purpose of Knurling?

    <p>To increase the diameter of a shaft or bearing for a quick repair</p> Signup and view all the answers

    What type of Knurl is available in Fine, Medium, and Large?

    <p>Diamond Knurl</p> Signup and view all the answers

    What is the purpose of a Follower Rest on a lathe?

    <p>To prevent the workpiece from deflecting away from the tool</p> Signup and view all the answers

    What type of Mandrel is used to machine parts with a matching internal thread?

    <p>Threaded Mandrel</p> Signup and view all the answers

    Study Notes

    Lathe Attachments and Accessories

    • Attachments and accessories used on lathes include taper attachment, steady rest, follower rest, threading attachment, tool post grinder, turret attachment, stops, and thread chasing dial.

    Taper Cutting Attachments

    • Telescoping taper attachment allows for producing tapers on the lathe with extreme accuracy.
    • The cross feed screw connected to the sliding block moves in and out, carrying the cross slide with it, thus cutting a taper to a selected angle.
    • The depth of cut is set by turning the cross feed dial.

    Tool Post Grinder

    • A tool post grinder turns a standard lathe into a versatile, accurate, internal, and external grinder.
    • Cylindrical parts can be machined and finish-ground in the same set-up.

    Steady Rests, Follower Rests, Mandrels, and Between Centers

    • Steady rests support long work when a tailstock center cannot be used and support the middle of a long workpiece when vibration or deflection is a problem.
    • Steady rests allow for long internal work (deep bores).
    • Ball bearing type steady rest is a type of steady rest.
    • Follower rest supports cutting long slender workpieces and prevents the workpiece from deflecting away from the tool.
    • Follower rest is used to eliminate vibration on long cuts.
    • Unlike steady rests, follower rests are mounted on the carriage and move with the cutting tool.

    Mandrels

    • Mandrels are used to grip a workpiece by the bore to permit the outside diameter to be machined.
    • Four common types of mandrels are solid mandrels, expansion mandrels, gang mandrels, and threaded mandrels.
    • Solid mandrels have a taper per foot of 0.006 - 0.008, come in standard fractional sizes, and are identified by a stamp on the large end.
    • Solid mandrels are used to turn parts such as bushings and pulleys where the OD must run true to the ID.
    • Expansion mandrels match the taper on the sleeve, and the part must be pressed on the arbor.

    Knurling

    • Knurls can be diamond or straight, and diamond knurls are available in fine, medium, and large.
    • Straight knurls have ridges that run parallel to the axis of the work.
    • Straight and diamond-shaped knurls can be used to increase the diameter of a shaft or bearing for a quick repair.

    Lathe Attachments and Accessories

    • Attachments and accessories used on lathes include taper attachment, steady rest, follower rest, threading attachment, tool post grinder, turret attachment, stops, and thread chasing dial.

    Taper Cutting Attachments

    • Telescoping taper attachment allows for producing tapers on the lathe with extreme accuracy.
    • The cross feed screw connected to the sliding block moves in and out, carrying the cross slide with it, thus cutting a taper to a selected angle.
    • The depth of cut is set by turning the cross feed dial.

    Tool Post Grinder

    • A tool post grinder turns a standard lathe into a versatile, accurate, internal, and external grinder.
    • Cylindrical parts can be machined and finish-ground in the same set-up.

    Steady Rests, Follower Rests, Mandrels, and Between Centers

    • Steady rests support long work when a tailstock center cannot be used and support the middle of a long workpiece when vibration or deflection is a problem.
    • Steady rests allow for long internal work (deep bores).
    • Ball bearing type steady rest is a type of steady rest.
    • Follower rest supports cutting long slender workpieces and prevents the workpiece from deflecting away from the tool.
    • Follower rest is used to eliminate vibration on long cuts.
    • Unlike steady rests, follower rests are mounted on the carriage and move with the cutting tool.

    Mandrels

    • Mandrels are used to grip a workpiece by the bore to permit the outside diameter to be machined.
    • Four common types of mandrels are solid mandrels, expansion mandrels, gang mandrels, and threaded mandrels.
    • Solid mandrels have a taper per foot of 0.006 - 0.008, come in standard fractional sizes, and are identified by a stamp on the large end.
    • Solid mandrels are used to turn parts such as bushings and pulleys where the OD must run true to the ID.
    • Expansion mandrels match the taper on the sleeve, and the part must be pressed on the arbor.

    Knurling

    • Knurls can be diamond or straight, and diamond knurls are available in fine, medium, and large.
    • Straight knurls have ridges that run parallel to the axis of the work.
    • Straight and diamond-shaped knurls can be used to increase the diameter of a shaft or bearing for a quick repair.

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    NAIT Machinist Program - Lathe Attachments PDF

    Description

    This quiz covers the set-up and application of attachments and accessories used on lathes, including taper attachment, steady rest, and threading attachment. It also describes the use of steady rests, follower rests, mandrels, and turning between centers.

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