Claims
- 1. A method of balancing the inertia forces of a double action press having an inner slide and an outer slide connected to a crankshaft comprising the following steps
- generating a sinusoidal inertia force curve of the inner slide;
- generating a sinusoidal inertia force curve of the outer slide;
- adding the sinusoidal inertia force curve of the inner slide and the sinusoidal inertia force curve of the outer slide to obtain a resultant inertia force curve; and
- providing in the press a dynamic balancer having a single mass driven by the crankshaft in a sinusoidal motion, said single mass having an inertia force curve substantially opposite and substantially equal to the resultant inertia force curve.
- 2. The method of claim 1, wherein the step of generating a sinusoidal inertia force curve of the inner slide includes plotting the inertia of the inner slide against the crank angle of the inner slide, and the step of generating a sinusoidal inertia force curve of the outer slide includes plotting the inertia of the outer slide against the crank angle of the outer slide.
- 3. The method of claim 1, wherein said dynamic balancer balances at least 90% of the inertia forces of said inner and outer slides.
- 4. The method of claim 1, wherein said dynamic balancer balances at least 96% of the inertia forces of said inner and outer slides.
Parent Case Info
This is a division of application Ser. No. 07/666,255, filed Mar. 8, 1991, now U.S. Pat. No. 5,136,875.
US Referenced Citations (9)
Foreign Referenced Citations (3)
Number |
Date |
Country |
2444083 |
Apr 1975 |
DEX |
2806976 |
Aug 1978 |
DEX |
3040686 |
May 1982 |
DEX |
Divisions (1)
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Number |
Date |
Country |
Parent |
666255 |
Mar 1991 |
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