Machinist Program: Lathe Attachments and Accessories

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.

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.