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1.发明公开
公开(公告)号：EP1540207A2
公开(公告)日：2005-06-15
申请号：EP03778266.1
申请日：2003-08-28
申请人： INA-Schaeffler KG
IPC分类号： F16H25/22
CPC分类号： B21D28/28 , B21D28/285 , B21D28/32 , F16H25/2223 , Y10T74/19749 , Y10T74/19767 , Y10T74/19772
摘要： The invention relates to a method for production of a ball screw nut (2), in particular for a ball screw, provided on the circumference thereof with at least one through opening (7) for housing a guide piece (8), whereby a hole stamp (19) arranged within the ball screw nut (2) is radially stamped from inside out through the sleeve of the ball screw nut (2) and through the through opening (7).
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2.发明公开
公开(公告)号：EP1526933A1
公开(公告)日：2005-05-04
申请号：EP03750402.4
申请日：2003-07-29
申请人： INA-Schaeffler KG
CPC分类号： F16H25/2223 , B21C37/292 , B21H3/08 , B21H7/187 , B21J5/12 , B21K1/56 , Y10T29/49636 , Y10T29/49995
摘要： Disclosed is a method for the production of a spindle nut (3) of a spherical thread drive mechanism. The inner circumference of said spindle nut (3) comprises at least one screw-shaped track (4) which is formed thereupon as a single piece and the threads (38) of which are separated by means of shoulders (6). Said shoulder (6) is interrupted at least at one peripheral position by a deflecting recess (23) in order to redirect balls (13) from one thread into an adjacent thread (38). The inventive method comprises the following steps: a tool arbor (56), the outer circumference of which is provided with a counter-profile of the screw-shaped track (4) and a projecting part (59) for each deflecting recess, is disposed inside a hollow blank (57); a tool exercising radial forces (F) acts upon and reshapes the blank (57) from the outside, the inner circumferential surface of the blank (57) being shaped according to the counter-profile and the projecting part (59) of the tool arbor (56) during the reshaping process such that the screw-shaped track (4) and the deflecting recess (23) are formed. The invention also relates to a device for carrying out said method.
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