Force-increasing electromagnetic punching machine of permanent-magnet assistant machinery

Abstract

The invention discloses a force-increasing electromagnetic punching machine of permanent-magnet assistant machinery, which comprises electromagnetic driving devices; each electromagnetic driving device consists of a yoke, an electromagnetic coil and an armature. The electromagnetic punching machine comprises two electromagnetic driving devices which are arranged up and down, wherein an upper armature and a lower armature of the two electromagnetic driving devices are connected through a transition body. An upper permanent magnet fixedly connected with a machine body of the punching machine is arranged above an upper electromagnetic driving device, and a lower permanent magnet fixedly connected with the machine body of the punching machine is arranged under a lower electromagnetic driving device. Under a condition that the input power is the same, the resultant force of a punching head moving downwards is increased, the impact force of the punching head can achieve more than 20 times of electromagnetic driving force, the speed of the punching head moving downwards is increased while the resultant force is increased, therefore the impulse of the punching head is increased, and the punching effect is good. A second-level toggle-rod mechanical force-increasing device is adopted. When all angles are appropriately selected, the amplification coefficient of force can achieve more than 6.7, and the impulsive force of the punching head is large. The force-increasing electromagnetic punching machine can be used for punching materials with higher hardness.

Description

technical field [0001] The invention relates to an electromagnetic punching machine, in particular to a permanent magnet boosting mechanical boosting electromagnetic punching machine which simultaneously adopts permanent magnet boosting, mechanical boosting and electromagnetic drive. Background technique [0002] In the production process of electronic and information products, a large number of small and micro stamping equipment are required. Compared with mechanical and pneumatic punching machines, electromagnetic punching machines have outstanding advantages such as the shortest energy transmission route, the simplest structure, high frequency and low price. For example, the Chinese invention patent CN1715043A discloses a permanent magnet punch press, which is actually a permanent magnet assisted electromagnetic punch press, which includes a yoke 2 and a punch 31 that reciprocates up and down inside, and the punch 31 is fixedly connected to the armature 32 , also include...

AI Technical Summary

Problems solved by technology

[0017] In addition, the reset mechanism combined with double guide posts and springs in this invention will not only cause force loss due to friction, but also the mechanism is prone to jamming and cannot be reset, resulting in equipment failure and unable to continue to work

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