A detection device for precision retention of numerical control turntable

Abstract

The invention belongs to the technical field of numerically controlled machine tool detection and particularly relates to a detection device for keeping the precision of a numerically controlled rotary table. The detection device comprises a platform body, a guide rail base, a sliding track, a manual lifting table, a lifting table transmission device, a lifting table locking device, a magnetic powder brake, a coupler I, a coupler II, a support, a torque sensor, an adjustable sliding coupler, the rotary table to be detected, a rapid-replacement reference key groove plate, a numerically controlled system, a cooling water tank, a programmable power supply, a collector, a converter, a computer, a digital display dial gauge and a laser interferometer. The automation degree is high, and changes of loads completely depend on changes of exciting current controlled by the computer; the advanced instrument is adopted for collecting data and directly displaying the data on the computer, and data are accurate and reliable; the detection device operates in a twenty-four hour mode without a shutdown, and therefore efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tool processing detection, and in particular relates to a detection device for the precision retention of a numerical control turntable. Background technique [0002] As a traditional supporting accessory of CNC machine tools - CNC turntable plays a pivotal role in the whole machine tool, and the machining accuracy of parts depends largely on the accuracy of CNC turntable. However, for the CNC turntable using worm gear as the precision indexing element, after a period of use, the meshing gap of the worm gear and worm will increase due to wear and tear, which will reduce the precision of the CNC turntable and eventually affect the processing quality of the parts. Therefore, the accuracy retention has become an important index to measure the performance of the CNC turntable. Correspondingly, the exploration of testing and inspection equipment and methods for the precision retentio...

AI Technical Summary

Problems solved by technology

The existing basic method is to use a labor-intensive method. Add heavy objects to the table of the CNC turntable to simulate a sports car, and have special personnel guard it. After stopping the machine and removing the heavy objects, the accuracy changes are manually detected.

Since the amount of wear changes slightly, it takes a long-term process to detect reliable data, and requires a special person to record and analyze the data, and it is quite difficult to adjust the load every time (lifting and dismounting heavy objects is cumbersome and unsafe), so this method costs Higher, extremely low efficiency, plus too much manual participation, the detected data has a large error

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