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Improved raster reading head

A grating reading head, grating technology, applied in the direction of using optical devices, measuring/indicating equipment, instruments, etc., can solve the problems of inaccurate measurement results, complex structure, gap error, etc., to improve measurement accuracy, structure optimization, and optimized structure. Effect

Inactive Publication Date: 2009-08-19
广州市诺信数字测控设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the grating is a very precise measurement tool, such a structure is relatively complicated, and it is easy to cause gap errors, making the measurement results inaccurate

Method used

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Examples

Experimental program
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Embodiment Construction

[0017] The present invention will be further described below in conjunction with drawings and embodiments.

[0018] Such as figure 1 The improved grating reading head shown includes a base 1 and a grating trolley 2 , and the grating trolley 2 clamps a grating ruler 3 .

[0019] Such as figure 2 and image 3 As shown, the grating trolley 2 is located in the groove of the base 1, the first side wall 13 and the second side wall 4 of the base 1 sandwich the grating trolley 2, and the first side wall 13 is provided with a compression spring 5 and a first thimble 6 , the compression spring 5 is in contact with the first thimble 6, and the first thimble 6 is in contact with the grating carriage 2. The second side wall 4 is provided with a second thimble 7 , and the second thimble 7 abuts against the grating carriage 2 .

[0020] In order to increase the hardness of the base, at the top of the first thimble 6 and the grating trolley 2, the grating trolley 2 is provided with a fir...

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Abstract

The invention discloses an improved raster reading head, which comprises a base and a raster bogie, wherein the raster bogie is positioned in a groove of the base; a first side wall and a second side wall of the base clamp the raster bogie; the inside of the first side wall is provided with a press spring and a first thimble which are contacted; the first thimble is supported against the raster bogie; the second side wall is provided with a second thimble; and the second thimble is supported against the raster bogie. The improved raster reading head optimizes the structure, the first thimble and the second thimble clamp the raster bogie, the press spring applies push force to the first thimble to make the first thimble and the second thimble clamp the raster bogie, and the improved raster reading head improves measuring accuracy.

Description

technical field [0001] The invention relates to the technical field of grating detection, in particular to an improved grating reading head. Background technique [0002] The grating is a photoelectric detection element made of light transmission and diffraction phenomena. It only consists of two parts: the scale grating and the grating reading head. Usually, one of them is fixed on the movable part of the machine tool (such as a worktable or a screw), and the other is installed on a fixed part of the machine tool (such as a machine base), and the two move relatively with the movement of the worktable. In the grating reading head, an indicating grating is installed, and when the scale grating moves relative to the grating reading head, the scale grating moves relative to the indicating grating. When installing the grating, the parallelism between the scale grating and the indicating grating and the gap between the two (generally 0.05mm or 0.1mm) must be strictly guaranteed....

Claims

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Application Information

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IPC IPC(8): B23Q17/22G01B11/00
Inventor 潘伟华严丽清梁乘峰黄强谷自敏
Owner 广州市诺信数字测控设备有限公司
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