Machine tools

Details Machine tools Machine tools

1975-04-09

1977-02-22

Simpson, Othell M.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having inversely angled cutting edge

74335, 408133, B23Q 512, B23Q 300

Patent

active

040086470

ABSTRACT:
There is disclosed a spindle unit for machine tools in which the spindle is rotated by a change speed mechanism comprising a drive sleeve splined and slidable axially in the spindle and a gear shift sleeve slidable with the drive sleeve and having a bull gear adapted in one position to engage a driving gear driven by a motor and in another axial position to cause a clutch element to engage a companion clutch element connected to a pulley also driven by the motor. There are pneumatic means for moving the sleeve to cause the bull gear to disengage said drive gear to free the spindle for independent hand rotation when setting up or adjusting the mechanism. The spindle driving means includes gear shift means to cause the drive sleeve and spindle to selectively rotate at high speed, low speed or be in neutral.

REFERENCES:
patent: 1815032 (1931-07-01), Boughton
patent: 2370885 (1945-03-01), Sohm
patent: 2788675 (1957-04-01), Hosea
patent: 2915910 (1959-12-01), Dickas
patent: 2992565 (1961-07-01), Hansen et al.

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