Linear guide rail precision automatic measuring device and measuring method thereof

Abstract

The invention discloses a linear guide rail precision automatic measuring device and a measuring method thereof. The device comprises a frame; a standard guide rail is fixedly installed on one end of the frame; a reference slide block is sleeved on the standard guide rail; the reference slide block is fixedly provided with a top board; the two sides in the top board width direction are each provided with an L-shaped support; the two L-shaped supports are respectively fixedly provided with vertically arranged non-contact probes; the two on-contact probes are respectively arranged at a left position and a right position in the width direction of a guide rail bottom; the frame is provided with an auxiliary guide rail parallel with the standard guide rail in terms of position; the auxiliary guide rail is provided with a movable slide block linked to the L-shaped supports; the movable slide block is linked to a driving apparatus through a belt; and the frame is also provided with a bracket bearing and holding a guide rail to be detected and a press head for pressing the end portion of the guide rail to be detected onto the end portion of the standard guide rail. By using the measuring mode, it is unnecessary to fix the guide rail to a detection platform through screws, and the measuring efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a precision measuring device, in particular to a linear guide rail precision automatic measuring device and a measuring method thereof. Background technique [0002] After the linear guideway is manufactured, precision measurement is required to ensure that the product meets the acceptance criteria. At present, there are mainly three indicators for the accuracy measurement of the linear guideway. Refer to image 3 , which are respectively: 1. The distance between the groove center of the linear guide rail and the bottom surface of the guide rail (height H); 2. The parallelism between the center of the left and right grooves of the guide rail on any cross section of the guide rail and the bottom surface of the guide rail (PAL1); 3. The parallelism of the groove centerline to the bottom surface of the guide rail in the longitudinal direction of the guide rail (PAL2); [0003] The existing linear guide rail accuracy measurement me...

AI Technical Summary

Problems solved by technology

The disadvantages of this measurement method are:

[0004] 1. It is necessary to clamp the guide rail and move the table base on the detection plate, which requires a lot of work and labor intensity, and the detection efficiency is extremely low;

[0005] 2. The measurement error is large. The contact surface of the detection plate, guide r

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