Device and method for quick adjustment of spindle precision of CNC drilling machine

Abstract

The invention discloses a device for quickly adjusting the precision of the main shaft of a numerically controlled drilling machine, which comprises more than two sets of main shaft motors, rotating shafts, main shaft boxes and power heads. The spindle box fixing plate is connected with the feed motor through the screw-nut pair, and all the power heads are set on the power head fixing plate through the guide rail pair and the fastening bolts; between the spindle box fixing plate and the power head fixing plate are fixed Positioning plate, the two ends of more than two rear detection rods are respectively set in the positioning plate and the inner holes of their respective rotating shafts; more than two front detection rods pass through their respective power heads and their rear ends are respectively set in the inner holes of the positioning plate In the hole, the front detection rods are all covered with positioning sleeves; the invention also discloses a method for quickly adjusting the precision of the spindle of a CNC drilling machine; the invention can greatly shorten the cycle of spindle precision adjustment, not only improve the efficiency of spindle precision adjustment, but also greatly improve precision.

Description

technical field [0001] The invention relates to a device and method for quickly adjusting the precision of a spindle of a numerically controlled drilling machine. Background technique [0002] Boiler auxiliary equipment such as high-pressure heaters, low-pressure heaters, nuclear power, chemical heat exchangers and other product tube sheets are drilled using biaxial or triaxial CNC deep hole drilling equipment. Taking the biaxial CNC deep hole drilling machine as an example, the equipment includes Two sets of spindle systems, each spindle system includes a spindle motor, a rotating shaft, a headstock and a power head, and the BTA drill pipe passes through the rotating shaft and the power head, and the straightness and parallelism of the drill pipe are determined and guaranteed by the rotating shaft and the power head Accuracy such as degree and pitch, so as to ensure the drilling accuracy of the product; when the product processing technology adjustment needs to change the p...

AI Technical Summary

Problems solved by technology

The traditional adjustment method is to rely on maintenance personnel to use tools such as detection rods, dial indicators, and micrometers. According to the traditional adjustment method of machine tool spindle accuracy, firstly adjust the pitch between the two sets of rotating shafts and power heads, and then gradually adjust the pitch. The rotation axis of the two sets of spindles, the front and rear coaxiality of the power head, straightness, and the parallelism and pitch of the two sets of spindles are carefully adjusted. The adjustment process is very complicated and slow, requiring very high skills and experience for maintenance personnel. Spindle precision adjustment takes 7 days, not only the adjustment efficiency is low, but also the precise adjustment is greatly affected by personnel factors, and the adjustment accuracy is difficult to guarantee

Images