Silent cam

A silent, cam technology, applied in the field of standard parts, can solve the problems of low guiding accuracy, high noise of ordinary cams, short service life, etc., and achieve the effects of high safety, high operating efficiency and reducing friction coefficient

Inactive Publication Date: 2003-05-21
北京永茂机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a silent cam, which solves the problems of high noise, low guiding precision and short service life of ordinary cams during operation

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 is a suspended silent cam, as shown in Figures 1 and 2, there is a sliding block 2 between the upper base 1 and the lower base 3, the sliding block and the upper base 1 are assembled together, and the sliding block and the base use a guide rod 8 are connected together, the front end of the guide rod is threaded, and the rear end has an inner hexagonal hole, which is convenient for disassembly and assembly. A guide sleeve 7 is installed on the sliding block, which cooperates with the guide rod to realize circular guidance. The fitting gap of the guide rod is very small, only about 0.01mm, so the space between the guide sleeves assembled at both ends of the sliding block is basically sealed, which can effectively prevent debris and other garbage from entering. Sliding block is when return stroke, and return stroke force is provided by nitrogen spring 11 under normal circumstances, if there are special circumstances (nitrogen gas spring is damaged or return str...

Embodiment 2

[0024] Embodiment 2 is a lower-mounted silent cam, as shown in Figures 3 and 4, there is a sliding block 2 between the lower-type upper base 13 and the lower-type lower base 14, and the sliding block and the lower base of the lower-type silent cam are assembled together to slide Block and base are connected together with guide rod 8, and guide rod front end has screw thread, and rear end has hexagon socket hole, is convenient to dismounting. A guide sleeve 7 is assembled on the slide block, and cooperates with the guide rod to realize circumferential guidance. When sliding block is on the return journey, return force is provided by nitrogen spring 11 under normal circumstances, if there are special circumstances (nitrogen spring is damaged or the return resistance is too large when nitrogen spring force is not enough), the forced pull-back block works to make the sliding block return to its original position. The lower type mute cam is equipped with a roller 5 on the upper bas...

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PUM

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Abstract

The noise-eliminating cam has two modes of pendant mode and under-set mode in its structure, between upper base seat and lower base seat a slide block is set, the slide block and upper base seat are sliding-connected together, and on the end portion of sliding stroke a backward spring is connected, the undersurface of the upper base seat is equipped with guide bar, on the slide block a slide guide sleeve and a rolling shaft are matched, an accelerator is assembled on the lower base seat, the rolling shaft and the accelerator anjd formed into its noise-eliminating device, and its backward sring is a nitrogen spring, said invented noise-eliminating cam changes the original static friction contact into the sliding friction contact, so that its friction coefficient can be greatly reduced and can elimiante noise.

Description

technical field [0001] The invention relates to a standard part applied to an automobile stamping die. technical background [0002] With the continuous development of the automobile industry, the design and manufacturing cycle of automobile molds has been greatly shortened, and the demand for standard parts of automobile molds is also increasing. The existing cam has a sliding block between the upper and lower bases, and a common flat steel wire return spring is housed in the sliding block. When the mold is clamped, the mating surfaces of the upper and lower parts of the cam are in static friction contact at the moment of contact, the friction force is large, the impact force is also large, the noise is large during operation, the guiding accuracy is not high, and the service life is short. Most of the noise in the stamping workshop is generated when the cam is working, and the noise pollution cannot meet the environmental protection requirements. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/02B21D22/06
Inventor 邱水树
Owner 北京永茂机电科技有限公司
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