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Boring bar based on friction damping

A technology of friction damping and vibration damping structure, applied in boring bars and other directions, can solve problems such as only more than 100 Hz, and achieve the effect of suppressing chatter vibration, simple structure and easy control.

Inactive Publication Date: 2010-06-16
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The above-mentioned device uses the principle of frictional energy dissipation to suppress high-frequency chatter vibration, but in a slightly larger boring system, the chatter frequency is often only more than 100 Hz, and the above methods are not enough to suppress

Method used

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  • Boring bar based on friction damping
  • Boring bar based on friction damping
  • Boring bar based on friction damping

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] The boring bar structure includes a boring bar 8 and a boring head 6 fixed on the right end of the boring bar 8. In this embodiment, there is a cavity inside the front end of the boring bar, and the damping structure is arranged in the cavity. Vibration-absorbing structures such as figure 1 As shown, it includes a pusher 11 , an adjusting screw 1 , a washer 2 , a second permanent magnet 10 , a first permanent magnet 9 , a friction plate 3 , a friction vibrator 5 and a guide rod 4 . Wherein, the left end of the guide rod 4 is threadedly fixed with a nut 12 , the right end of the guide rod 4 is threadedly connected with the boring head 6 , and the boring head 6 is also fixedly connected with the boring bar 8 . The pusher 11, spacer 2, second permanent magnet sheet 10, first permanent magnet sheet 9, friction sheet 3 and friction vibrator 5 are set on the guide rod 4 i...

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Abstract

The invention relates to a boring bar structure, in particular to the boring bar structure based on friction damping. The boring bar structure can effectively inhibit the vibration of the boring bar in the process of boring a workpiece. A cavity at the front end of the boring bar is provided with a friction vibrator and homopolar mutually exclusive permanent magnetic sheet structures. According tothe theory of consuming energy by friction, an adjusting screw nail is rotated so as to change the distance between the permanent magnetic sheets, adjust the positive pressure between the friction vibrator and a main structure, change the dynamic characteristic of the boring bar and the energy consumption amount of the friction, and consume the vibration energy, so that the vibration in the boring process is effectively inhibited. The boring bar structure has important application value to promote the inhibition of the vibration in the boring process, and guarantee precise boring processing quality, and has the characteristics of simple and compact structure and easy control.

Description

technical field [0001] The invention relates to a boring bar structure, specifically a boring bar structure based on frictional damping, which can effectively suppress the chatter of the boring bar during the boring process of workpieces. Background technique [0002] With the development of modern industry, metal cutting is moving in the direction of high automation and flexibility. The cutting vibration suppression technology is the premise to ensure the processing quality of the workpiece and realize the automatic and flexible processing, so it is particularly important. Among them, the deep hole processing technology is increasingly widely used in modern industrial aerospace, automobile industry, military manufacturing and other fields, and the processing quality requirements are also getting higher and higher. However, in the process of deep hole boring, when the workpiece is processed with a boring bar with a length-to-diameter ratio of more than 5, because the overha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B29/02
Inventor 王民区炳显昝涛
Owner BEIJING UNIV OF TECH
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