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High-speed precise numerical-control stamping machine mechanismstructure capable of realizing dynamic lower dead point precision compensation

A dynamic precision, precise numerical control technology, applied in the field of mechanical pressure processing, can solve the problems of low processing precision, inability to process high-precision parts, and no automatic compensation of bottom dead center, so as to achieve the effect of small impact and long service life.

Active Publication Date: 2013-03-20
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the principle structures of high-speed precision CNC punching machines are equipped with a balanced slider crank slider structure in the opposite direction. It is not easy to apply an accuracy compensation system, and there is no precise automatic compensation function for the bottom dead point.
Therefore, the processing accuracy of this type of high-speed precision CNC punching machine is not high, and it cannot process high-precision parts (such as lead frames) that require an embossing process.

Method used

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  • High-speed precise numerical-control stamping machine mechanismstructure capable of realizing dynamic lower dead point precision compensation
  • High-speed precise numerical-control stamping machine mechanismstructure capable of realizing dynamic lower dead point precision compensation

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Embodiment 1

[0019] The present invention can realize the general structure of the high-speed precision numerical control punch mechanism of bottom dead center dynamic precision compensation as follows figure 1 As shown, in addition to the above-mentioned structural features, when the auxiliary slider 3 in the slider crank mechanism moves to the top dead center position, the first upper link 51 and the second upper link 52 in the two sets of multi-bar mechanisms are respectively simultaneously Swing from the outside to the inside, and drive the stamping slider 10 to move downward, the sub-slider 3 is opposite to the movement direction of the stamping slider 10, which can balance the inertial force in the vertical direction. In addition, the first push rod 41 and the second push rod 42 mainly bear tensile stress during stamping.

Embodiment 2

[0021] The present invention can realize the general structure of the high-speed precision numerical control punch mechanism of bottom dead center dynamic precision compensation as follows figure 2 As shown, in addition to the above-mentioned structural features, when the auxiliary slider 3 in the slider crank mechanism moves to the top dead center position, the first upper link 51 and the second upper link 52 in the two sets of multi-bar mechanisms are respectively simultaneously Swing from inside to outside, and drive the stamping slider 10 to move downward, the sub-slider 3 is opposite to the movement direction of the stamping slider 10, which can balance the inertial force in the vertical direction. In addition, the first push rod 41 and the second push rod 42 are mainly subjected to compressive stress during the stamping process.

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Abstract

The invention discloses a high-speed precise numerical-control stamping machine mechanismstructure capable of realizing dynamic lower dead point precision compensation. The high-speed precise numerical-control stamping machine mechanismstructure consists of a slider-crank mechanism, two push rods, two multi-rod mechanisms, two lower connecting rods and a stamping slider, wherein the slider-crank mechanism is arranged on a stamping machine body along the vertical direction, the vertical-movement stamping slider is arranged right belowunder the slider-crank mechanism, the two push rods, the two multi-rod mechanisms and the two lower connecting rods are respectively and symmetrically arranged at the two sides of the slider-crank mechanism, the slider-crank mechanism and the two multi-rod mechanisms are connected together by the two push rods, and the stamping slider and the two multi-rod mechanisms are connected together by the two lower connecting rods. According to the high-speed precise numerical-control stamping machine mechanismstructure capable of realizing the dynamic lower dead point precision compensation, the influence on horizontal-movement sliders, subjected to dynamic precision adjustment, caused by a stamping machining impact load is little, thereby being beneficial to the improvement of compensation precision and the prolongation of the service life of an adjustment system.

Description

technical field [0001] The invention belongs to the technical field of mechanical pressure processing, in particular to a high-speed precision numerical control punch mechanism capable of realizing dynamic precision compensation of the bottom dead point. Background technique [0002] With the advancement of mold technology and the improvement of product quality requirements, the requirements for the precision of high-speed precision CNC punching machines are also getting higher and higher, especially the dynamic accuracy of the bottom dead center of the punching machine, which requires the ability to overcome the influence of speed and temperature changes, so that the production The product is dimensionally stable. Generally speaking, the higher the accuracy of part forming, the higher the requirement for the accuracy of the bottom dead center. The dynamic accuracy of the bottom dead center is related to the accuracy of the processed parts and the life of the die, and is al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B1/14
CPCB30B1/14
Inventor 彭斌彬陈浩远封金徽孙宇王栓虎
Owner NANJING UNIV OF SCI & TECH
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