Machine tool comprising a tool driven in the axial direction by

Details Machine tool comprising a tool driven in the axial direction by Machine tool comprising a tool driven in the axial direction by

1986-01-28

1988-11-22

Bilinsky, Z. R.

Gear cutting, milling, or planing

Gear cutting

With regulation of operation by use of templet, card, or...

409 35, B23F 516

Patent

active

047862181

ABSTRACT:
A machine tool comprising an axially reciprocating tool is driven by a hydraulic jack or lifting cylinder which is controlled by a servovalve. The amplitude and velocity of the lifting cylinder is set at a control circuit to which the position and acceleration of the lifting cylinder are applied as input variables. The electrohydraulic control has a high damping and high gain. As a result the velocity change of the lifting cylinder when the tool enters the workpiece is negligibly small.

REFERENCES:
patent: 4136302 (1979-01-01), Tlaker et al.
patent: 4329096 (1982-05-01), Herscovici

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