Flexible sealing main shaft center cooling device

Abstract

The invention relates to the technical field of machining, in particular to a flexible sealing main shaft center cooling device. The flexible sealing main shaft center cooling device comprises a flexible sealing part and a clamping part with which the outer wall of the flexible sealing part is sleeved, wherein the flexible sealing part comprises an outer sleeve and an inner sliding sleeve which are sleeved with each other and can slide relatively; the outer sleeve is fixedly connected with the clamping part; an elastic element is arranged between the outer sleeve and the inner sliding sleeve so as to realize the axial reset movement of the inner sliding sleeve; a sealing head used for abutting against a workpiece is arranged at the end portion of the inner sliding sleeve; the sealing head is provided with an arc-shaped top face so as to be matched with and seal an end face round hole of the workpiece; a water nozzle used for being inserted into the workpiece is arranged on the arc-shaped top face; and cooling liquid channels are formed in the inner sliding sleeve and the sealing head and used for injecting cooling liquid into the workpiece in a circulating mode. According to the flexible sealing main shaft center cooling device, the length tolerance of a pipe can be compensated, the axial vibration impact can be buffered, the machining efficiency of the pipe is improved, the service life of a cutter is prolonged, precision manufacturing, especially the manufacturing process requirement of a multi-taper special-shaped hole, can be well adapted, and the labor intensity is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a central cooling device for a flexible sealed main shaft. Background technique [0002] In the machining process of drilling and reaming of pipes, it is necessary to clamp and position the pipe along the direction of the main shaft, and then use drill bits, reamers and other tools for processing; the main shaft positioning mechanism used in traditional processing methods is on the axis The upper part is a rigid structure. When the length tolerance of the pipe is large, it is easy to have difficulty in clamping and positioning. At the same time, the rigid clamping and positioning mechanism cannot better buffer the vibration shock generated during the processing process, which affects the tool yield and tool life. . Contents of the invention [0003] The present invention aims at the technical defect that the existing spindle clamping and positioning mechanism is ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical defect that the existing spindle clamping and positioning mechanism is a rigid structure, which cannot better adapt to the tolerance of the length of the workpiece, and provides a flexible sealing spindle center cooling device. The flexible structure described in the present invention is assembled on one end of the workpiece, which can It well compensates the length tolerance caused by the rigid connection of the other end of the workpiece and buffers the axial vibration impact, and improves the processing efficiency and tool life of the pipe, especially the precision pipe with a large length-to-diameter ratio; at the same time, the invention has a coolant channel and The universal sealing structure can realize the cooling function of the hollow workpiece and the sealing function of the water in and out when processing the hollow workpiece, which can well adapt to the requirements of precision manufacturing, especially the manufacturing process of multi-taper heterogeneous holes; effectively reduce labor intensity and benefit Development of basic manufacturing processes

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