Slide device in mechanical press
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United States of America Patent
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Aug 11, 1998
Grant Date -
N/A
app pub date -
Aug 14, 1995
filing date -
Oct 13, 1994
priority date (Note) -
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Abstract
A screw mechanism is used to change the shut height of a mechanical press. A clearance between thread faces of a female screw and a male screw in this screw mechanism is shifted to one of the thread faces, on which an operating load of the press acts, by pressing the other thread face, which receives the operating load, by the action of a hydraulic force from a hydraulic cylinder mechanism, by which the clearance is always positioned on the side of one thread face. Since the female and male screws cannot rotate relatively and put in a lock state while the thread faces are pressed to one side, the position of a slide does not change even if the press is driven in this state. A hydraulic cylinder for quick die opening is provided separate from a hydraulic cylinder for locking the female and male screws in the shut height adjustment, by which the slide is moved upward or downward. This achieves a quick die opening mechanism used for maintenance and checks of the press which maintains a sufficient and constant upward stroke length of the slide even though the shut height changes.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- AIDA ENGINEERING, LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Sato, Mitsuo | Sagamihara, JP | 82 | 844 |
Yagi, Takashi | Sagamihara, JP | 37 | 293 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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