Patent ID: 6502835
Filing Date: 2003-01-07
Classification: B23Q,Y10T

Abstract:
A work piece holder with rotation mechanism comprising:a support, a releasable work piece clamp in said support and being actuatable to both clamp and rotate said work piece, a first mechanism and a second mechanism separately operatively associated with said clamp and being arranged to respectively effectuate clamping and rotation of said clamp, a third mechanism operatively associated with said clamp to selectively engage said clamp to thereby releasably secure said clamp against rotation, said first and said third mechanisms include members movable in a respective first direction relative to said clamp and operable on said clamp for respectively clamping and securing said work piece, a hydraulic pressure source fluid-flow connected with said members and having a first pressure level for selectively acting on said members and thereby move said members in said first direction, a spring operative on said members for urging said members in a direction opposite from said first direction to thereby move said members to release said clamp from clamping and securing upon drop in said hydraulic pressure to a second pressure level less than that of said first pressure level, and an electronic controller operatively associated with all said mechanisms to sequentially operate said mechanisms to thereby sequentially clamp said work piece, rotate said work piece, and secure said work piece against rotation, and with said controller being operatively associated with said hydraulic pressure source to thereby provide for said first and said second pressure levels.