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Fastening device for casing of linear encoder

A fixing device and grating ruler technology, applied in the optical field, can solve problems affecting the accuracy of the grating ruler, and achieve the effects of easy processing, easy operation, and guaranteed measurement accuracy

Inactive Publication Date: 2012-07-04
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the measurement process, the grating scale will be affected by factors such as the ball screw pair, and the temperature will change to a certain extent, resulting in thermal expansion and contraction, which will affect the accuracy of the grating scale

Method used

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  • Fastening device for casing of linear encoder
  • Fastening device for casing of linear encoder
  • Fastening device for casing of linear encoder

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Embodiment Construction

[0019] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a rigid scale shell bracket 1 is fixed in the middle of the scale shell 5, which is rigidly connected with the component to be measured through a pin 3; a flexible scale shell bracket 2 is respectively provided on both sides of the rigid scale shell bracket 1, and they are connected by bolts. 4. Flexible connection with the component to be tested. When the scale shell 5 expands and shrinks relative to the member to be measured due to temperature changes, the center of the scale shell 5 will not move due to the rigid scale shell bracket 1. When the temperature rises, the entire scale shell takes the center as the divergence point to the left and right Two directions expand, and when the temperature drops, both sides of the scale shell will shrink inward with the center as the converging point, and the scale ...

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Abstract

A fastening device for a casing of a linear encoder belongs to the technical field of optics and is used for firmly fastening the casing to a part to be detected, and for effectively controlling deformation of the linear encoder upon temperature effect to be within a small range so that the linear coder has certain repeatable temperature property. The fastening for the casing of the linear encoder comprises a rigid casing support and a plurality of flexible casing supports, wherein the rigid casing support is fixed in the middle of the casing, and the flexible casing supports are fixed at equal intervals on the casing and disposed on two sides of the rigid casing support in bilateral symmetry. The rigid casing support is provided with a pin hole in the middle, each flexible casing support is provided with a through hole in the middle, and each flexible casing support is provided with grooves which are reserved on two sides of the through hole in bilateral symmetry. By the aid of the designed structure of the rigid casing support and the flexible casing supports, the deformation of the linear encoder upon temperature effect is controlled well, and the certain repeatable temperature property of the linear encoder is realized.

Description

technical field [0001] The invention belongs to the field of optical technology, in particular to a scale housing fixing device of a grating scale. Background technique [0002] In the field of precision measurement and displacement control, the use of grating as a benchmark is internationally recognized as the most practical, economical and reliable technical measure to obtain high precision. The grating ruler measuring mechanism is a representative product to achieve this approach, and is widely used in various machine tools, electromechanical equipment, and automated measuring equipment. [0003] When the grating ruler is installed on two mutually moving components as a measuring mechanism, the scale housing is connected with one component to be measured, and the carriage body is connected with the scanning mechanism with the other component to be measured. During the measurement process, the grating scale will be affected by factors such as the ball screw pair, and the ...

Claims

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Application Information

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IPC IPC(8): G01B11/00
Inventor 杨帆孟辉张吉鹏吴宏圣孙强李贺军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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