Device for non-contact measuring curvature radius with laser displacement sensor

A non-contact measurement and laser displacement technology, applied in the direction of using optical devices, measuring devices, instruments, etc., can solve the problems of limitation, non-complete spherical curved surfaces cannot be measured, etc., and achieve the effect of simple structure and non-contact measurement.

Inactive Publication Date: 2008-01-30
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the measurement method using a caliper is limited by the specifications of the caliper when measuring a large radius of curvature, and it cannot be measured for a non-complete spherical surface

Method used

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  • Device for non-contact measuring curvature radius with laser displacement sensor
  • Device for non-contact measuring curvature radius with laser displacement sensor

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Embodiment Construction

[0011] The present invention is implemented according to the structure shown in Fig. 2, wherein the workpiece 3 to be tested can choose a workpiece with a larger curvature radius, and the grating ruler is the SGC-K2S type grating ruler produced by Changchun Optical Machine Digital Display Technology Co., Ltd., and the grating data The acquisition card 8 adopts the SGC-PC3.1 data acquisition card produced by Changchun Guangji Digital Display Technology Co., Ltd., and transmits the data to the Legend Kaitian 4600 computer 11 through the first data transmission line 9 . The laser displacement sensor 6 adopts the LK-501 laser displacement sensor produced by Keyence Corporation of Japan. The analog signal output by the laser displacement sensor is processed by the LK-2501 laser displacement sensor processor 7 matched with the laser displacement sensor. And the data is sent to the Legend Kaitian 4600 computer 11 through the second data transmission line 10.

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Abstract

A device that adopts a laser displacement sensor for achieving non-contact measurement of curvature radius is a curvature radius measurement device in the field of optoelectronic measuring technology. The technical problem of the invention to be solved is that the device adopting laser displacement sensor for achieving non-contact measurement of curvature radius is provided. The technic proposal of the invention includes a grating stator, a grating dynamic device, a laser displacement sensor, a processor, a grating data acquisition card and computer. The grating dynamic device can move along the direction of the length, the grating dynamic device is connected with the grating data acquisition card by wire, the output of the grating data acquisition card is connected with the input of the computer; the laser displacement sensor is arranged on the movable grating dynamic device and moves along with the grating dynamic device, the measurement head of the laser displacement sensor is towards to the measured workpiece, the output of the laser displacement sensor is connected with the input of the processor, the output of the processor is connected with the input of the computer. The device can measure large curvature radius.

Description

1. Technical field [0001] The invention belongs to a device for measuring curvature radius and belongs to the technical field of photoelectric measurement. 2. Background technology [0002] In general, contact measurement is generally used for the measurement of small-caliber curvature radius. For the measurement of large curvature radius, the contact measurement method is limited by the size of the workpiece itself on the one hand. On the other hand, in some cases, the contact measurement method is used The contact method cannot realize the measurement, for example, the measurement of the radius of curvature of the rail turning, the measurement of the curvature radius of the arched bridge, the measurement of the curvature radius of the large gas pipeline, etc., which are often encountered in industrial applications and scientific research question. [0003] In the prior art, the conventional measurement of the radius of curvature is to use a caliper, as shown in Figure 1: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/255
Inventor 朱万彬
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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