Rotary index table with fluid pressure preloaded bearings

Details Rotary index table with fluid pressure preloaded bearings Rotary index table with fluid pressure preloaded bearings

F - Mech Eng,Light,Heat,Weapons

16

C

308/1.7

F16C 32/06 (2006.01) B23Q 1/26 (2006.01) B23Q 16/10 (2006.01)

Patent

CA 1199050

ABSTRACT OF THE DISCLOSURE Rotary tables for machine tool application are disclosed of the type using "Hirth" couplings to provide precision indexed positions and which are characterized by an hydraulically actuated piston member, one set of mating serrated teeth carried by the rotary tile and a concentric row of teeth fixed to the table base with the rotary table being supported on bearings. In the first version, a series of ball bearings are disposed in corresponding ball grooves, with a built-in predetermined amount of clearance in the bearing to enable the coupling teeth to be seated without interference from the bearing. Fluid pressure is adapted to be applied in the cavity to disengage the piston and to move the table top plate so as to preload the ball bearing, in order to provide a precision rotation of the rotary table for contouring applications. The table top plate also is formed with an outboard bearing surface engaged with a surface on the base when the serrated teeth are locked for maxim support, but are lifted clear when released to reduce wear and friction during indexing rotation of the top plate. In a second embodiment, the rotary table top assembly is mounted on bearings having a fraction characteristic decreasing with increasing pressure until an optimum preload level, and the disengaging air pressure is applied so as to increase the pressure on the bearing during indexing rota- tion of tile table in order to optimize the bearing friction characteristics during indexing as well as to disengage the Hirth coupling teeth.

410705

Affiliated with

Also associated with

Rating

Rotary index table with fluid pressure preloaded bearings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotary index table with fluid pressure preloaded bearings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary index table with fluid pressure preloaded bearings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1308954