Press
AssigneeHoden Seimitsu Kako Kenkyusho Co., Ltd.
InventorsShoji Futamura, Hiromitsu Kaneko
Life of this patent
Estimating the term…
Abstract
A pressing apparatus using a motor, in which a driving device for fast feed, which lowers a upper die to a position immediately before pressing, and a motor for pressing, which performs a pressing operation, are used to cause the driving device for fast feed and the motor for pressing to operate cooperatively, and only one position detector, which detects a present position of a slider, is provided for a set of the driving device for fast feed and the motor for pressing. A lock device is provided so as to lock the slider and the screw shaft while the motor for pressing is operating for pressing a work piece.
Claims15
A pressing apparatus, comprising:
- a base;
- a support plate held in parallel to the base via a plurality of guide columns vertically provided on the base;
- a slider for sliding on the guide columns such that said slider moves in an upward direction and a downward direction between the base and the support plate;
- a first motor attached to the support plate for driving said slider in said upward direction and said downward direction;
- a second motor for moving said slider in said upward direction and said downward direction such said slider presses a work piece,
- a screw shaft attached to a rotation shaft of the first motor, said screw shaft driving said slider relative to the base via rotation of the first motor;
- a ball screw nut connected with a ball screw section provided in the screw shaft;
- a lock device that integrates the screw shaft and the support plate;
- a slider moving mechanism including an input shaft, said slider moving mechanism reversibly rotating the ball screw nut with respect to the screw shaft via a rotation torque from the input shaft when the screw shaft and the support plate are fixed by the lock device, said ball screw nut being fixable to the slider via said slider moving mechanism, said second motor rotating forward and reversely, said second motor providing rotational torque to the slider moving mechanism via the input shaft;
- and
- a position detector provided for a set of the first motor and the second motor, the position detector detecting a position of the slider.
A pressing apparatus, comprising:
- a base;
- a support plate held in parallel to the base via a plurality of guide columns vertically provided on the base;
- a slider sliding on the plurality of guide columns such that said slider moves in an upward direction and a downward direction between the base and the support plate;
- a reciprocating driving means for driving said slider in said upward direction and said downward direction, said reciprocating driving means being attached to the support plate;
- a motor for pressing a work piece, said motor moving the slider in said upward direction and said downward direction;
- an encoder for the motor, said encoder detecting rotation of the motor,
- and a position detector for measuring movement of the slider;
- a first screw provided in the reciprocating driving means;
- a second screw provided in the slider, said second screw being connected with the first screw, said motor being attached to the support plate;
- and
- a rotation transmitting mechanism connecting the motor and the second screw, said rotation transmitting mechanism transmitting rotation of the motor to the second screw, said slider being moved in a vicinity of a moving end point of the reciprocating driving means via the reciprocating driving means, said second screw being rotated relative to the first screw such that a pressing force is generated between the slider and the base.
Dependencies are inferred from the claim text.