Control system for machine tool with hydraulically stroked cutte

Details Control system for machine tool with hydraulically stroked cutte Control system for machine tool with hydraulically stroked cutte

1978-11-15

1981-03-10

Christian, Leonard D.

Motors: expansible chamber type

With motive fluid valve

Both inlet and exhaust controlled by motive fluid pressure...

F15B 1110

Patent

active

042546907

ABSTRACT:
A control system for a machine tool, such as a gear shaper, having a hydro-mechanically stroked cutter spindle, controls the stroking speed of the spindle, the feed of a workpiece relative to a cutter or other tool carried by the spindle, and the pressure of the fluid supplied to the hydraulic portion of the spindle stroking mechanism in such a way as to improve the efficiency of the machine both with regard to the time required to complete a given job and with regard to power consumption. The work force exerted by the spindle during its work stroke may be maintained within a selectable maximum limit and the cutter spindle stroking position is remotely adjustable to bring it into proper working relationship with a workpiece or to raise it to an elevated position to bring it out of working relationship with the workpiece. Various different stroking speeds of the spindle and various different feed rates of the workpiece relative to the spindle are available to suit different job requirements. The control system is also adjustable to adapt it to different stroke lengths and return speed ratios of the spindle.

REFERENCES:
patent: 3200713 (1965-08-01), Viersma et al.
patent: 3741073 (1973-06-01), Garnjost

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