Grating ruler and ruler shell

A technology of grating scale and scale shell, which is applied in the field of grating scale, can solve the problems affecting the measurement accuracy of grating scale, the deformation of the installation surface of grating scale and scale shell is different, and achieve the effect of reducing deformation difference, reducing influence and ensuring temperature characteristics

Inactive Publication Date: 2019-08-30
CHANGCHUN YUHENG OPTICS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the first object of the present invention is to provide a scale housing of a grating scale to solve the problem of the difference in deformation of the mounting surface of the

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  • Grating ruler and ruler shell
  • Grating ruler and ruler shell
  • Grating ruler and ruler shell

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Example Embodiment

[0028] The embodiment of the present invention discloses providing a scale housing 1 of a grating ruler, so as to solve the problem that when the existing grating ruler is subjected to external stress, strain and thermal load, the installation surface deformation of the grating ruler and the scale housing 1 is different, which affects the measurement of the grating ruler. Problems such as accuracy.

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] See Figure 1-Figure 6 , figure...

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Abstract

The invention discloses a grating ruler and a ruler shell. One end, far from a ruler shell opening in a vertical direction, of a ruler shell body is provided with an installation part for positioningwith mechanical equipment, the installation part is provided with an expansion and contraction adjustment part in the length direction of the ruler shell body, the expansion and contraction adjustmentpart is provided with an installation hole for fixing with the mechanical equipment, first expansion and contraction adjustment cavities are arranged between two ends of the expansion and contractionadjustment part in the length direction of the ruler shell body and the installation part, a second expansion and contraction adjustment cavity for buffering and adjusting expansion and contraction of the ruler shell body in the vertical direction is arranged between the bottom of the expansion and contraction adjustment part and the installation part, and two ends of the second expansion and contraction adjustment cavity penetrate the installation part. The ruler shell is fixed with the mechanical equipment through the installation hole; when the ruler shell bears vibration, assembly stressand thermal load, buffer deformation is realized through the expansion and contraction adjustment part, external stress strain and thermal load can be unloaded effectively, deformation difference of the grating ruler and the mounting surface support is reduced, and impact of temperature assembly stress on grating measurement accuracy is reduced.

Description

technical field [0001] The present invention relates to the technical field of optical precision instruments, more specifically, to a scale housing of a grating ruler, and to a grating scale including the scale housing. Background technique [0002] A grating ruler is a measurement feedback device that works by utilizing the optical principle of a grating. Because of its large detection range and high precision, it is often used in various precision CNC machine tools, electromechanical equipment, and automated measuring equipment. [0003] Enclosed scales have an aluminum housing to isolate the interior of the scale from environmental influences. The grating scale is bonded inside the scale shell, and is firmly connected with the external equipment bed through the scale shell. Due to the different materials of the grating ruler and the scale shell and the equipment bed, the thermal expansion coefficient is also different. When the external environment temperature changes, ...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 王洋李德胜逄增宝杨尚于海洋武平
Owner CHANGCHUN YUHENG OPTICS
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