Electric heating – Metal heating – Cutting or disintegrating
Patent
1996-10-16
1998-03-17
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
B23H 100, B23H 706
Patent
active
057289905
ABSTRACT:
Method and apparatus for machining steel-ball guide grooves in guide rail portions of a linear-motion stage, whose movable member performs linear motions with respect to other movable members. In accordance with this method, first, a lower plate (2), which is an immovable member of the linear-motion stage, and an upper plate (3), which is a movable member thereof, are inserted into a recess portion (25) of a work holding element (21) in such a way that guide rail portions (4 and 5) are faced to each other. Then, the positional relation between the lower plate (2) and the upper plate (3), which are in a fixation state, is established by a pressing unit (31) and a pushing unit (32). Subsequently, a wire is inserted between the guide rail portions. Moreover, the work holding element (21) is caused by a two-dimensional motion device to perform a two-dimensional motion in a horizontal plane. Thus, guide grooves, between which steel balls are inserted, are formed in opposite surface parts of the guide rail portions (4 and 5).
REFERENCES:
patent: 3377111 (1968-04-01), Brault
patent: 5242227 (1993-09-01), Komiya et al.
patent: 5461211 (1995-10-01), Yoshidaa et al.
patent: 5466069 (1995-11-01), Agari
Evans Geoffrey S.
Sigma Koki Co., Ltd.
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