Underdrive opposing action press

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• a crankshaft connected to each said slide whereby rotation of said crankshaft causes each said slide to move toward and away from the other said slide;
• a drive mechanism to rotate said crankshaft;
• and
• a dynamic balancer operably connected to one of said slides whereby press inertia is balanced to greater than 80 percent and vibration severity is less than 0.52 inches per second squared.

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• a crankshaft connected to each said slide whereby rotation of said crankshaft causes each said slide to move toward and away from the other said slide;
• a drive mechanism to rotate said crankshaft to cause said slides to reciprocate greater than 400 strokes per minute;
• a clutch/brake mechanism connected to said drive mechanism to stop said press;
• and
• a dynamic balancer operably connected to one of said slides to substantially balance press inertia, thereby permitting said brake mechanism to stop said press within one revolution of said crankshaft.

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• a rocker arm attached to one of said slides;
• a single crankshaft to which is connected each said slide, whereby rotation of said single crankshaft causes each said slide to move toward and away from the other said slide;
• a dynamic balancer connected to said rocker arm whereby said dynamic balancer is driven from said one of said slides rather than said crankshaft;
• and
• a drive mechanism to rotate said single crankshaft.

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• said two slides comprising an upper slide and a lower slide;
• a dynamic balancer connected to said lower slide to balance said press;
• a single crankshaft to which is connected each said slide, whereby rotation of said single crankshaft causes each said slide to move toward and away from the other said slide;
• and
• a drive mechanism to rotate said single crankshaft.

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• said two slides comprise an upper slide and a lower slide;
• a dynamic balancer connected to said upper slide and a second dynamic balancer connected to said lower slide to balance said press, said first and second dynamic balancers are driven by movement of their respective slides;
• a single crankshaft to which is connected each slide, whereby rotation of said single crankshaft causes each said slide to move toward and away from the other said slide;
• and
• a drive mechanism to rotate said single crankshaft.

A mechanical press comprising:

• two slides disposed in opposed relationship to each other;
• a single crankshaft to which is connected each said slide, whereby rotation of said single crankshaft causes each said slide to move toward and away from the other said slide;
• a drive mechanism to rotate said single crankshaft;
• and
• a slide piston attached between one of said slides and said crankshaft to guide said one of said slides in rectilinear motion.