Manual Lathe Standard Practices University of （手动车床标准实践大学）.pdf

Manual Lathe Standard Practices i June 3, 2011 Table of Contents Using Power Feed 1 Changing the Chuck 3 Tools to Use 5 Inside Threads 9 Outside Threads 11 1 Using Power Feed When to Use: Use Power Feed whenever you are facing, turning or boring. Why to Use: Power Feed gives much better surface finishes, saves the operator ample effort, makes tooling last longer, and creates less heat compared to hand feeding. How to Use: 3 Levers:  Forward/Reverse Lever o Use this lever to select if the machine feeds in or out.  Feed X/Z Lever o X-direction for turning and boring, Z-direction for facing.  Engage/Disengage Lever o The GO and STOP lever. Forward/Reverse Lever Feed X/Z Lever Engage/Disengage Lever 2 General Rules:  Rough cut feed rate is generally .008” o Can be slightly different.  Finish cut feed rate is generally .004” o Can be slightly different. Other Notes:  The power feed is stronger than you! You will not be able to stop it while engaged.  The machine will crash the tool post into the chuck. Do not leave machine unattended while feeding expecting it to disengage at a certain point. WARNING Use caution when using power feed in holes or areas that are difficult to see. Use dial indicator