Hydrostatic pressure auxiliary shoring cutter-holder and shoring method

Abstract

The invention relates to a hydrostatic pressure auxiliary support tool bar and a support method thereof. The hydrostatic pressure auxiliary support tool bar is provided with a bar head used for installing a tool bit, a bar neck provided with a cutting liquid flow channel and a bar body used as a bar head support member, wherein, a central axial hole of the bar body is arranged as a cutting liquid feeding channel which is communicated with the cutting liquid flow channel arranged on the bar neck. The invention is characterized in that a plurality of independent bearing grooves are evenly distributed on the surface of the bar body along outer circumference and the liquid feeding channel is respectively communicated with each bearing groove through each pore throttle channel. As the 'flexible' support is adopted in the invention, manpower adjustment are unnecessary, the effect for absorbing the vibration of a tool is better, the surface of a processed pore can not be damaged, simultaneously, the hydrostatic pressure auxiliary support tool bar can be used together with the existing support bar or support block technique.

Description

technical field [0001] The invention relates to the technical field of precision machining, in particular to a tool holder and a support method for the tool holder, and a support method for a boring tool holder or a reamer holder and a holder used in precision boring pins or reaming. Background technique [0002] When using a boring tool or reamer for precision boring or reaming holes, the bending and vibration of the tool holder have a great impact on the machining quality, especially for the precision machining of slender holes. In order to increase the rigidity of the boring tool shank or the reamer tool shank when precision boring or reaming holes, to reduce the bending and vibration of the boring tool shank or the reamer tool shank, and to improve the machining accuracy, you can try to set an auxiliary support on the tool shank. For example, "rigid" auxiliary supports such as support bars or support blocks are provided. However, the tool bar structure using the auxilia...

AI Technical Summary

Problems solved by technology

However, the tool bar structure with the auxiliary support of the support bar or support block has high requirements for the manufacture, installation and adjustment of the support bar or support block in actual operation, and the use cost is high; on the other hand, in order to ensure the For the normal machining, it is necessary to require that the support bar is slightly lower than the height of the tool tip in the radial direction. Therefore, there is still a gap between the support bar and the boring hole. This gap makes the boring tool bar or reamer tool bar Still bends and vibrates, and the support is often not ideal

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