Chuck correction mechanism, and machine tool concentric correction device and method

Abstract

The invention provides a chuck correction mechanism, a machine tool concentric correction device and method. A supporting structure, a pair of chucks, a correction rod and a pair of first measuring instruments are included. The chucks are arranged on two sides of the supporting structure, and the chucks are arranged in a mode that a central axis is horizontal. The chucks are provided with a plurality of clamping jaws distributed in a circumferential direction, and the clamping jaws can move along a radial direction of the chucks. The correction rod penetrates through the pair of chucks and isclamped and fixed through the clamping jaws. The first measuring instruments are arranged at two ends of the correction rod and are used for measuring levelness of the correction rod extending to an outer side of the clamping jaws. The mechanism, the device and the method have advantages that a fixing position of the correction rod on each chuck is adjusted by adjusting a center distance between the clamping jaws on the chucks and the position; and a difference value of values of the first measuring instruments corresponding to the two ends of the correction rod is within a first set difference value range by adjusting the center distance between the clamping jaws corresponding to the two ends of the correction rod so that concentricity of the pair of chucks and the clamping jaws is achieved.

Description

technical field [0001] The present disclosure relates to the technical field of concentricity correction of horizontal machine tools, in particular to a chuck correction mechanism, a machine tool concentricity correction device and a method. Background technique [0002] At present, there are not many devices and methods for machine tool chuck calibration, and the one still in use is to adjust through the double chuck centering device. The double chuck centering device adjusts the chuck through the rotating guide device, so that the three jaws of the chuck are gathered inward and centered. There are many variables in this correction method, and there are several defects: 1. Due to the high temperature working environment, the rotating guide rail is deformed; 2. The thickness of one or several layers of asbestos pads on the three claws at the end is different during adjustment, which requires frequent adjustments. Open the jaws to increase or decrease the asbestos pad to ach...

AI Technical Summary

Problems solved by technology

There are many variables in this correction method, and there are several defects: 1. Due to the high temperature working environment, the rotating guide rail is deformed; 2. The thickness of one or several layers of asbestos pads on the three claws at the end is different during adjustment, which requires frequent adjustments. Open the jaws to increase or decrease the asbestos pad to achieve the goal, and there will be a large error at the front end; 3. After disassembly and assembly of the chuck rotation guide device, due to the different experience and techniques of the maintenance workers, it takes a lot of manpower to still be unable to determine the concentric position. ; 4. The glass tube erected by the operation may have large out-of-roundness and cause defects such as offset

Tie the nylon wire to the glass tube clamped by the bearing, observe the height difference between the left and right axes with the naked eye, put the box ruler upright on the side of the glass tube clamped by the bearing, and observe the beating of the bearing with the naked eye. There are many variables in this measurement method , including the large out-of-roundness of the glass tube, the drop of the line between the two nodes of the nylon rope, etc., the measurement accuracy is poor, up to 2mm, and most of the results are related to personal experience, it takes a long time to adjust, and the glass tube is broken Possibly, it is a waste of manpower, material and financial resources. When the concentricity is poor, it is easy to cause high stress and possible bending of the melted mound.

At present, the devices and methods for high-precision concentric correction of machine tools are very lacking

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