Adaptive support type boring device for machining web type deep holes and with cutting tool being retractable in radial direction

Abstract

The invention discloses an adaptive support type boring device for machining web type deep holes and with a cutting tool being retractable in radial direction. The adaptive support type boring devicecomprises an outer sleeve and the cutting tool, a coaxial-line push-pull rod which can slide along an inner hole of the sleeve is arranged on the rear portion of a center through hole of the outer sleeve, and the cutting tool comprises a shank and a blade. The shank and the blade are arranged along the outer sleeve in the radial direction, the blade is detachably mounted at the outer end of the shank, and a plurality of groups of supporting bodies providing support for the cutting tool are arranged on the outer circumference of the outer sleeve in the axial direction at intervals. A sliding block which is used for supporting the shank and slidably connected with the front portion of the center through hole is connected to the front end of the push-pull rod, and a side tool bore for the cutting tool to move along the outer sleeve in the radial direction is formed in the outer sleeve. The shank is obliquely and slidably connected with the side surface of the sliding block, and during theaxial movement of the sliding block along the outer sleeve, the cutting tool moves along the side tool bore of the outer sleeve in the radial direction. The adaptive support type boring device is relatively simple in structure, and the supporting bodies can provide support for the blade, and the machining accuracy can be guaranteed better.

Description

technical field [0001] The invention relates to the technical field of deep hole processing, and more specifically relates to an adaptive support type boring device for processing abdominal deep holes with radially expandable cutters. Background technique [0002] Under some special working conditions, it is necessary to use inner hole shaft parts with small diameter at both ends and large diameter in the middle. This kind of inner hole with small diameter at both ends and large diameter in the middle is called abdominal hole. Holemaking has always been a challenge. Whether it is the processed blade or the processing method, there are many problems to be solved. The machining of the ventral hole of this type of part requires that the insert must enter the interior of the part, and the insert can be fed at a constant speed in the axial and radial directions to realize the machining of this type of surface. [0003] Chinese invention patent CN101786173A discloses a telescopi...

AI Technical Summary

Problems solved by technology

Although the worm gear drive can accurately control the extension of the cutter head, the screw installation of the boring head on the boring bar is difficult to ensure the installation accuracy and also affects the machining accuracy

[0006] Chinese invention patent CN101961793A discloses a kind of tool tip telescopic self-adaptive support type boring device, and CN105598480A discloses a single-axis manual deep hole boring device, both of which can process variable-diameter inner holes, but The overall structure of the two devices is complex, and it is difficult to guarantee the comprehensive error of processing

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