Extrusion type bi-trunking milling tool absorber

Abstract

The invention discloses an extrusion type bi-trunking milling tool absorber. According to the absorber, the principle that under the action of an electromagnetic field, magnetorheological fluid can produce extrusion acting force within several milliseconds is applied, the inherent frequency of a milling tool is improved, and acute vibration of the milling tool is avoided. The absorber is provided with an inner shaft sleeve, mechanical seals, an injection hole, wireways, a double-coil groove, a clamping shaft sleeve, a core body, a magnet exciting coil, an end cover and the magnetorheological fluid. The injection hole is machined in the tail end of the core body of the absorber, convenient injection and replacing of the magnetorheological fluid are achieved, and the machining process and the using efficiency of the absorber are improved. By means of the wireways in the outer side face of the core body of the absorber, reasonable layout of a lead of the magnet exciting coil is achieved, and the intervene problem between the lead and the clamping shaft sleeve and the end cover is avoided. By means of the inner shaft sleeve, the magnetorheological fluid and the milling tool are separated, the situation that impurities in the working environment pollutes the magnetorheological fluid is avoided, and rapid dismounting and mounting of the milling tool is achieved.

Description

technical field [0001] The patent of the present invention relates to a technology for reducing the vibration of a milling tool in the field of mechanical processing during processing a workpiece. Background technique [0002] In the machining process, due to the insufficient structural rigidity of the milling system and the interaction of internal excitation and feedback, strong vibrations often occur between the workpiece and the tool, especially when the length-to-diameter ratio of the tool is greater than 5, the cutting force is small In the case of , you will still encounter problems with flutter. These vibrations not only adversely affect the roughness of the machined surface and machining accuracy, but also generate environmental noise and damage tools and machine tools. In order to solve the problem of milling vibration, many scholars at home and abroad have done a lot of research: [1] American scholar Taylor believes that cutting vibration is due to the fact that t...

AI Technical Summary

Problems solved by technology

One is that piezoelectric ceramics need a higher control voltage as an actuator, and there are certain difficulties in practical use; the other is that piezoelectric ceramics are poorly flexible and fragile, and are not suitable for occasions that are subject to large impacts.

[5] In the research of intelligent cutting tools, electrorheological fluid is used to control the vibration of cutting tools.

However, because electrorheological fluids require high control voltage in practical applications, the risk factor is large, the cost is high, and it is difficult to realize

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