Dynamic balance device for press machine
AssigneeAida Engineering, Ltd.
InventorsTakao Ito, Tadashi Nishimura
Life of this patent
Estimating the term…
Abstract
A dynamic balance device for a press machine includes a plurality of cam portions which transmit a vertical motion of a slide to a balance weight to move the balance weight in a reverse direction of the vertical motion of the slide. The cam portions are each movable in a direction substantially orthogonal to a moving direction of the slide, and each include a first inclined surface and a second inclined surface. The first inclined surface has an inclination angle corresponding to an inclination angle of an inclined surface formed on a member which is provided integrally with the slide and vertically moves with the slide. The second inclined surface has an inclination angle corresponding to an inclination angle of an inclined surface formed on the balance weight.
Claims5
A dynamic balance device for a press machine which performs press working by converting a rotational motion of a crank shaft into a vertical motion of a slide, the dynamic balance device comprising:
- a plurality of cam portions which transmit the vertical motion of the slide to a balance weight to move the balance weight in a reverse direction of the vertical motion of the slide,
- the plurality of cam portions each being movable in a direction crossing a moving direction of the slide, and including:
- a first inclined surface having an inclination angle corresponding to an inclination angle of an inclined surface formed on the slide or on a member which is provided integrally with the slide and vertically moves together with the slide;
- and a second inclined surface having an inclination angle corresponding to an inclination angle of an inclined surface formed on the balance weight.
A press machine comprising:
- a slide, driven by a motor, which moves in a first direction and a second direction opposite to the first direction;
- a balance weight;
- a cam that converts a motion of the slide to move the balance weight for reducing mechanical vibration of the press machine, wherein
- the cam has a first inclined surface and a second inclined surface
- the slide or a member provided with the slide and moving together with the slide has a third inclined surface,
- the balance weight having a fourth inclined surface, and
- the first to fourth inclined surfaces are inclined with respect to the first and second directions
- the first to fourth inclined surfaces are so arranged that
- the first inclined surface faces the third inclined surface, and the second inclined surface faces the fourth inclined surface,
- when the slide is driven to move in the first direction, (1) the slide pushes the cam, (2) the cam slides on the third inclined surface to push the balance weight, and (3) the balance weight slides on the second inclined surface to move in the second direction.
Dependencies are inferred from the claim text.