Question

Steady rests, folloser zests, and mandrels are accessories that increase the vertaolity ot the lathe Steady and follower rests permit the machining of long slender mandrel fitted through the hole of a workpiece permits machining the sides square and or the outside diameter concentric with the hole. Decide whether each statement is true or false and circle the letter in the right-hand column that indicates your choice L. A steaty rest a used to prevent long slender work from sponging when beng machined n a lathe HIT F TF T F 4 T F 5. T F 6 T F 7 T F S T F 2. A steady rest has two jaws to support the workpiece. 3. The jaws of a steady rest are made of hardened steel. 4. The steady rest is fastened to the lathe carriage 5. A steady rest can only be used on work that is supported between lathe centers 6. The workpiece must have a trued section to provide a bearing surface for the steady zest jaws 7. Cutting fluid is used to lubricate the bearing between the work and the steady rest jaws 8. When machining long work that is held in a chuck, first adjust the steady rest to the work near the chuck 9. The lubricant may be used to indicate contact between the work and the steady rest jaws 10. Before machining the work when using a steady rest, align the top and front of two turmed diameters with a dial indicator 11. A cathead must be used if round work is to be held accurately in a steady rest. 12. The follower rest is fastened to the lathe camiage. 13. The follower rest supports the work on the top and rear sides to prevent it from springing 14. All three jaws of the follower rest must be adjusted evenly against the work 15. The cutting tool should be mounted just to the right of the follower rest jaws 16. A follower rest is particularly useful when long shafts are being threaded. 17. Solid mandrels are hardened and ground parallel 8. An expansion mandrel uses a tapered solid mandrel and grooved sleeve to fit odd-sized holes in workpieces 9. A gang mandrel is tapered with a threaded end to hold identical workpieces on the mandrel 0. The projecting portion of a taper shani mandrel may be threaded parallel, or tapered 10 T F 1 T F 12. TF 13. T F 4 T 15. T F 6 TF 18. T F 19 TE SCORE TEST 55 Chucks and Chuck Work (Units s7,58) luch of the work machined in a lathe may be held in a three, or four-jaw chuck Operations such as turnng and threading outside diameters, as well as drilli pping holes, may be performed

Answer 1