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Linea encoder

A linear encoder and sleeve technology, applied in the field of linear encoders, can solve the problems of positioning accuracy influence, deformation, unfavorable sliding body 120 and main grating ruler 150 maintaining the position and distance, etc.

Inactive Publication Date: 2005-02-23
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

figure 2 A cylindrical sleeve 114 and a compression spring 112 are in contact with the two end surfaces 116 and 118 of the sliding body at the front end of the spring steel wire 110. The cylindrical sleeve 114 and the end surface 116 of the sliding body are in cylindrical rolling contact, and the friction force therebetween is small, but The cylindrical sleeve sleeve 114 is in cylindrical sliding contact with the end surface 118 of the sliding body, and the friction force between them is relatively large, which is not conducive to maintaining the orientation and distance between the sliding body 120 and the main grating scale 150
[0007] When the circuit box drives the sliding body 120 to move through the spring steel wire 110, the spring steel wire 110 will be subject to frictional resistance and the inertial force of the sliding body 120, so there is a tendency to deform, and this deformation will be unfavorable for the orientation of the sliding body 120 and the main grating scale 150 and spacing maintenance, resulting in the impact of positioning accuracy

Method used

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Examples

Experimental program
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Embodiment 1

[0044] The linear encoder of the present invention such as image 3 As shown, in this embodiment, it includes a main grating ruler 2 with a front reference surface 22 and an end reference surface 21; a main housing 1 with a slot 102, wherein the slot 102 is arranged in the main housing The bottom of the body 1, and the main grating scale 2 is placed on the slot 102, so that the front reference surface 22 and the end reference surface 21 of the main grating scale 2 are not facing the main housing; a sliding body 8 has two sleeves Bearing groove 81, two cover plates 10, three rolling bearings 92 in contact with the front reference surface 22, and two rolling bearings 91 in contact with the end surface reference surface 21, these rolling bearings 91, 92 are pasted on the main grating scale 2 , so that the sliding body 8 moves parallel to the main grating scale 2; a marked grating scale 11 is located in the middle of the two sleeve bearing grooves 81 of the sliding body 8, so that...

Embodiment 2

[0049] The linear encoder of the present invention is roughly the same as Embodiment 1 in this embodiment, and the only difference from Embodiment 1 is the compression connection mechanism 500, such as Figure 6 shown.

[0050] Two groups of compression coupling mechanisms 501 and 502 in this embodiment, one group 501 includes a spherical ball (not shown in the figure) in the sleeve seat slot 81, which can rotate freely; Cover the cylindrical sleeve 6 on the periphery of the spherical bead 7, and can rotate freely; a spring steel wire 4, one end of which is connected with the protruding arm of the circuit box (not shown in the figure), and the other end is connected with the cylindrical sleeve 6 , so that the circuit box is connected to the sliding body 8; and a compression spring 5 that presses the cylindrical sleeve 6, so that the spherical beads 7 in the cylindrical sleeve 6 can withstand the groove of the sleeve seat of the sliding body 8 81; while the other group 502 onl...

Embodiment 3

[0053] The linear encoder of the present invention such as Figure 7 As shown, this embodiment includes a main grating scale 2 with a front reference surface 22 and an end reference surface 21; a main housing 1 with a slot 102, wherein the slot 102 is arranged in the main housing 1, and the main grating ruler 2 is placed on the slot 102, so that the front reference surface 22 and the end reference surface 21 of the main grating ruler 2 are not facing the main housing; a sliding body 8 has a sleeve seat Notch 81, three rolling bearings 92 in contact with the front reference surface 22, and two rolling bearings 91 in contact with the end surface reference surface 21, these rolling bearings 91, 92 make the sliding body 8 move in parallel along the main grating scale 2; a marking grating Ruler 11, located on one side of the sliding body 8, the marked grating ruler 11 cooperates with the main grating ruler 2 to generate a light diffraction to measure the displacement distance; a ci...

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Abstract

A linear encoder consists of a master grating rule, a sliding body with two sleeve initial cuts, an indication grating rule, a circuit box and two groups of constrict connection mechainsm which comprises a ball bead, a cylindrical sleeve, a compression spring and spring steel wire. The contact between initial cuts and connection mechanisms is either contact of cylinder and plane or contact of ball and plane for decreasing frictional force.

Description

technical field [0001] The present invention relates to a linear encoder and a pressing connection mechanism for the linear encoder. Background technique [0002] The optical encoder mainly includes a main grating scale, a marking grating scale and a connecting mechanism. The main grating scale is fixed on a hollow aluminum extrusion, and the marking grating scale is fixed on another sliding body, and the sliding body is connected with another circuit box by the connecting mechanism. Maintain the allowable parallel orientation and spacing. The circuit box can move relative to the hollow aluminum extruded shell, that is, the relative movement of the marked grating scale and the main grating scale is driven by the connecting mechanism. At this time, a beam passes through the main grating scale and the marked grating scale to generate diffraction of the grating Effect, after a light detector captures the light intensity signal and converts it into an electrical signal, it can...

Claims

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Application Information

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IPC IPC(8): G01D5/26
Inventor 林庆芳高清芬陈誉元张中柱
Owner IND TECH RES INST
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