LAB-2-taper-turning.pdf - LAB SESSION 02 OBJECTIVE To carry...

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LAB SESSION 02 OBJECTIVE To carry out taper turning operation on job by using compound rest swiveling method. APPARATUS Lath machine, Vernire caliper, Steel ruler, Work piece (Mild Steel) 25 mm diameter, HSS single point tool LATHE SAFETY As always we should be aware of safety requirements and attempt to observe safety rules in order to eliminate serious injury to ourselves or others. Wear glasses, apron, safety shoes, short sleeves, no tie, no rings, no trying to stop the work by hand. Stop the machine before trying to check the work. Don’t know how it works? –“Don’t run it.” Don’t use rags when the machine is running.Remove the chuck key from the chuck immediately after use. Do not turn the lathe on if the chuck is still in the chuck key. Move the tool bit to a safe distance from the chuck, collet, or face plate when inserting or removing your part. Place the tool post holder to the left of the compound slide. This will ensure that the compound slide will not run into the spindle or chuck attachments. Never run the machine faster than the recommended speed for the specific material. If a chuck or faceplate is jammed on the spindle nose, contact an instructor to remove it. If any filing is done on work revolving in the lathe, file left handed to prevent slipping into the chuck. Always stop the machine before taking measurements. Use care when cleaning the lathe, the cutting tools is sharp, the chips are sharp, and the work piece may be sharp.
Make sure the machine is turned off and clean before leaving the workspace. Always remove the chuck key after use, and keep floor area clean. THEORY PrincipleCutting Tapers on a lathe is common application. Taper turning means, to produce a conical surface by gradual reduction or increase in diameter from a cylindrical work piece. This tapering operation has wide range of use in construction of machines. Almost all machine spindles have

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