F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
10/4
F16H 25/22 (2006.01) B23G 1/36 (2006.01) B23P 13/04 (2006.01)
Patent
CA 1260210
ABSTRACT OF THE DISCLOSURE A method of forming a ball screw member from an elongated work piece having an outer cylindrical surface, as well as the ball screw member formed by the method. A helical ball screw thread is machined on the outer cylindrical surface, the helical ball screw thread having a helical groove and a helical crest surface. An end journal or other end treatment is formed in the workpiece, the end journal or other end treatment being located during the forming operation relative to the helical crest surface. The outer cylindrical surface of the workpiece may be centerless ground prior to the machining of the helical ball screw thread. The helical crest surface may be ground after the machining of the helical ball screw thread to provide increased concentricity between components of the ball screw member, A high precision ball screw member may be formed from the ball screw member by performing a regrinding operation on the helical groove, the regrinding operation being positioned relative to the helical crest surface.
468539
20th Century Machine
Marks & Clerk
LandOfFree
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