chatter sheet and answer material removal prof.alaa el-hakim ahmedawad
DESCRIPTION
Metal RemovalM/c Tool Chatter \ (Self Study)1. What is meant by m/c tool chatter? How can it be identified from other types ofvibrations?2. Explain how chatter occurs in m/c tools.3. What is regenerative chatter? How can it be overcome?4. Machining a workpiece cp 50 mm at 500 rprn using a feed of 0.3mm, with a turning tool having % = 45°, produced a chip thickness 0.6 mm. Chatter marks having 3mm equal spacing were detected evenly distributed on the chip. Find the chatter frequency and the no of chatter marks on the w.p.periphery.5. Mention the harmful effects of chatter.6. flow can chatter be avoided, in order to attain chatter-free m/cg ?7. If chatter has already occurred, how can it be got rid. of?8. What is meant by (biim)? Discuss the effects of the different m/cg-factors on it.9. The (biim - v) curve is a mirror image of the (ac - v) curve. Discuss!Show by the aid of such curves how can chatter be avoided in m/cg each of: Stainless steels, Structural steels and Carbon steels.10. Determine the cutting speed of (b,;m)m;n from: the following (b,im - v) relationship and hence calculate the max. perm, depth of cut using turning tools having (X= 30°; 45°, 90°) respectively:TRANSCRIPT
