Forming machine including drive mechanism having rack and gear s

Details Forming machine including drive mechanism having rack and gear s Forming machine including drive mechanism having rack and gear s

1983-03-11

1985-05-28

Crane, Daniel C.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

74 8917, 74409, 74422, B21D 1700

Patent

active

045192316

ABSTRACT:
A forming machine (10) disclosed has an improved drive mechanism (28) for driving a pair of slides (20,22) mounted on upper and lower bases (12, 14) so as to provide forming of a workpiece for forming racks (24, 26) mounted on the slides. Upper and lower hydraulic motors (30,32) respectively drive the pair of slides whose movement is coordinated by a rotatable synchronizing gear (48) and upper and lower synchronizing racks (50,52). The synchronizing gear (48) is mounted by a connecting portion of the machine between the slides and is meshed with the synchronizing racks (50, 52) which are mounted on the slides by wedge adjusters (53) to adjust backlash of the synchronizing racks with the synchronizing gear. Both rotary and linear hydraulic motors for drivng the slides are disclosed. A pair of tie rod connections (150) preferably extend between the upper and lower bases to control deflection therebetween during the workpiece forming. Each tie rod connection (150) includes a sleeve (152) that is compressed and a tie rod (162 ) that extends through the sleeve and is tensioned in a preloaded manner to provide the prevention of deflection between the bases.

REFERENCES:
patent: 389168 (1888-09-01), Rogers
patent: 411480 (1889-09-01), Warren
patent: 2930877 (1960-03-01), Pelphrey
patent: 2995964 (1961-08-01), Drader
patent: 3214951 (1965-11-01), McCardell
patent: 3463030 (1969-08-01), Nuccel
patent: 3572158 (1978-03-01), Adams
patent: 3735629 (1973-05-01), Paramonoff
patent: 3793866 (1974-02-01), Anderson et al.
patent: 4080699 (1978-03-01), Anderson
patent: 4155236 (1979-05-01), Jungesjo

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