Boring machine boring bar support boring bar centering device

Abstract

The invention discloses a boring machine boring bar support boring bar centering device comprising a cone bearing, a cone bearing left end cover, a cone bearing inner fixed sleeve, a left back nut, a left adjusting thread bushing, a nylon tapper sleeve, a boring bar support upper half pressure cover, a cone bearing right end cover, a positioning square key, a right back nut, a right adjusting thread bushing, a keyway nut, a fastening screw, a cone bearing outer fixed sleeve and a boring bar support fixed pedestal; in working, the left and right adjusting thread bushings cannot change position, and thus avoiding affecting the gap between the nylon taper sleeve and the boring bar; the outer taper degree of the nylon tapper sleeve is reduced from 8 to 2 degrees, thus reducing nylon taper sleeve radial pressure on the boring bar, and the boring bar cannot be tightly extruded.

Description

technical field [0001] The invention belongs to a boring bar centering device, in particular to a boring bar centering device for a boring bar support of a boring machine. Background technique [0002] The existing boring bar support of the boring machine is mainly composed of the upper half gland of the boring bar support, the taper bearing fixed sleeve, the right end cover of the taper bearing, the taper bearing, the outer taper sleeve, the right adjustment thread sleeve, the nylon inner taper sleeve, the left adjustment thread sleeve, the cone The left end cover of the bearing, the base of the boring bar bracket and the sliding seat of the boring bar bracket are composed. The adjustment of the left adjusting threaded sleeve can ensure a reasonable gap between the boring bar and the nylon inner cone sleeve, but because there is no space for a wrench to be placed on the taper bearing fixed sleeve, it is very inconvenient to adjust because there is nowhere to borrow force....

AI Technical Summary

Problems solved by technology

[0002] The existing boring bar support of the boring machine is mainly composed of the upper half gland of the boring bar support, the taper bearing fixed sleeve, the right end cover of the taper bearing, the taper bearing, the outer taper sleeve, the right adjustment thread sleeve, the nylon inner taper sleeve, the left adjustment thread sleeve, the cone The left end cover of the bearing, the base of the boring bar bracket and the sliding seat of the boring bar bracket are composed. The adjustment of the left threaded sleeve can ensure a reasonable gap between the boring bar and the nylon inner taper sleeve, but because there is no space for a wrench to be placed on the taper bearing fixed sleeve, it is very inconvenient to adjust because there is no place to use force

The right-adjusting threaded sleeve and the left-adjusting threaded sleeve are both set with right-handed threads. During work, through the transmission of friction between the boring bar and the nylon inner taper sleeve, the nylon inner taper sleeve, the right-adjusting threaded sleeve, and the left-adjusting threaded sleeve, there will be The left adjusting threaded sleeve is turned tighter and tighter, and the right adjusting threaded sleeve is gradually loosened, so that the nylon inner tapered sleeve is often squeezed until it is squeezed to death, affecting production and damaging the machine tool

Generally, the taper of the nylon inner taper sleeve is 8 degrees, which makes the nylon inner taper sleeve have a certain pressure on the radial direction of the boring bar, and it is easy to squeeze the boring bar

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