Automatic measuring device and method for precision of rolling linear guides

Abstract

The invention discloses an automatic measuring device for precision of rolling linear guides. The device mainly comprises a lathe bed platform and a clamping device, wherein a portal frame and a measuring platform simultaneously move in the direction of a to-be-measured guide under the action of a Z-axis feeding part, transmission between roller racks and guidance of air floating guide pairs; under the action of a Y-axis feeding part, the measuring platform is driven through transmission of ball screws to move up and down relative to the portal frame. When the measuring platform moves, a laser displacement sensor mounted on the measuring platform measures every form and position error of the to-be-measured guide arranged on the platform and fixed by the clamping device, acquired data are subjected to correlative processing, and required data are obtained through analysis, so that every form and position error of the to-be-measured guide is obtained. With the adoption of an automatic measuring method, the to-be-measured guide is mounted without assistance of bolts, the efficiency can be greatly improved, furthermore, the universality is higher, and the device can be used for measuring the precision of multiple models of the rolling linear guides.

Description

technical field [0001] The invention relates to an accuracy detection device, in particular to an automatic measurement device and method for the accuracy of a rolling linear guideway. Background technique [0002] The rolling linear guide pair has the advantages of simple structure, small dynamic and static friction coefficient, good precision retention, etc., and plays the role of bearing and motion guiding of moving parts in mechanical transmission. The linear guide is an important part of the rolling linear guide pair. Its manufacturing accuracy is one of the main factors that cause fluctuations in the rolling linear guide system during motion. The adaptability of the raceway geometry directly affects the rolling linear guide pair. mechanical properties. With the application fields of rolling linear guides becoming more and more extensive, and the technical requirements for testing rolling linear guides are high, how to accurately and quickly measure the dimensional acc...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic linear guide rail manufacturers mostly use manual measurement to measure the shape and position errors of the guide rail. Align the installation plane of the guide rail, and align the meter head with the raceway surface of the guide rail, and then move the meter base for measurement. The maximum and minimum values ​​of the comprehensive measurement can be used to obtain the parallelism of the guide rail raceway. The disadvantages of this measurement method are: 1) Installation The workload of guide rails and mobile table bases is heavy, and the measurement efficiency is low; 2) When measuring, the measurement accuracy cannot be guaranteed, and the measurement effect is poor; 3) This method requires high quality testers and poor measurement reproducibility; 4) Different guide rails need to cooperate Different fixtures require higher costs

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