Multiple axis milling machine and fixture

Claim 1

A MULTIPLE POSITION WORK HOLDING FIXTURE FOR COOPERATIVE USE WITH A MULTIPLE SPINDLE MILLING MACHINE HAVING MULTIPLE AXES OF MOVEMENT, COMPRISING: AN UPRIGHT FRAME GENERALLY DEFINING A VERTICAL PLANE; SUPPORT BRACKETS ON SAID FRAME EXTENDING FORWARDLY OF ITS PLANE; A PLURALITY OF HORIZONTALLY ELONGATED WORK HOLDING TABLES PIVOTALLY MOUNTED ON SAID BRACKETS FOR ROTATION ABOUT HORIZONTAL AXES; SAID TABLES BEING VERTICALLY SPACED FROM EACH OTHER WITH THEIR AXES OF ROTATION ALL LYING IN A COMMON VERTICAL PLANE AND HAVING FRONT FACES FOR THE RECEPTION OF SUBSTANTIALLY IDENTICAL WORK PIECES; SAND TABLES HAVING A NEUTRAL POSITION IN WHICH SAID FRONT FACES LIE IN A COMMON VERTICAL REFERENCE PLANE; AND MEANS TO TILT SAID TABLES OUT OF SAID REFERENCE PLANE IN UNISON ABOUT THEIR AXES OF ROTATION TO EXACTLY THE SAME ANGULAR EXTEND FOR COOPERATION WITH A SET OF IDENTICAL MILLING CUTTERS; SAID MEANS COMPRISING AT LEAST ONE GEAR SEGMENT SECURED TO EACH TABLE AND LYING IN A COMMON VERTICAL PLANE NORMAL TO SAID REFERENCE PLANE; A VERTICALLY EXTENDING RACK VERTICALLY MOVABLY CARRIED BY SAID FRAME AND HAVING TEETH IN DRIVING ENGAGEMENT WITH EACH OF SAID GEAR SEGMENTS; AND DRIVE MEANS TO RECIPROCATE SAID RACK VERTICALLY TO ROTATE EACH OF SAID GEAR SEGMENTS AND THEIR ASSOCIATED TABLES THROUGH IDENTICAL VERTICAL ANGLES.