Grating ruler reading head tackle based on high-strength high-modulus fiber material

Abstract

The invention belongs to the technical field of grating detection, and relates to a grating ruler reading head tackle based on a high-strength high-modulus fiber material. The tackle comprises a tackle body, the tackle body is made of a high-strength high-modulus fiber material, buffer mechanisms are arranged on the two side walls, in the moving direction, of the tackle body, and a fixing hole anda copper sleeve which are used for being connected with a reading head base are further arranged on the side face of the tackle body. The grating ruler reading head tackle aims at improving materialcharacteristics, reducing material deformation and friction loss generated in the sliding process of the reading head tackle, further avoiding vibration of the tackle under the impact effect through the buffer mechanism, and promoting sensitivity and operation stability of the grating ruler displacement sensor in multiple aspects.

Description

technical field [0001] The invention relates to the technical field of grating detection, in particular to a grating ruler reading head pulley based on high-strength and high-modulus fiber materials. Background technique [0002] The grating ruler, also known as the grating ruler displacement sensor, is a measurement feedback device that uses the optical principle of the grating. The grating ruler is often used in the closed-loop servo system of the CNC machine tool and can be used for linear displacement detection. It is mainly composed of a scale grating and a grating The reading head consists of two parts. Usually, the scale grating is fixed on the fixed part of the machine tool (such as the base of the machine tool), and the grating reading head is installed on the movable part of the machine tool (such as the worktable or screw), and the grating reading head slides relative to the scale as the worktable slides. Raster moves. [0003] The structure of the grating readi...

AI Technical Summary

Problems solved by technology

Since the indicator grating is located on the reading head block, it is necessary to strictly control the stability of the reading head block during sliding. The commonly used reading head block is generally made of metal, which has the following problems in manufacturing and application: (1) The quality of the metal material is large, relatively heavy, and not light enough; (2) The raw material price of the metal material is relatively expensive, resulting in high manufacturing costs of the reading head block; (3) In actual use, the reading head block often needs to be moved along a long The workbench or lead screw slides at high speed, and the stress of the metal reading head block changes greatly when it is impacted. In addition, the mass is too large, which can easily cause the reading head block to vibrate or even slightly deform, which affects the precise matching between the gratings. Make the accuracy of the grating ruler deviate

[0005] Generally speaking, as a high-precision photoelectric signal measuring instrument, the grating sensor has strict requirements on the stability of the working environment. From this point of view, metal materials are not ideal materials for the reading head trolley, whether it is impact resistance, Lightweight performance and manufacturing cost greatly limit the sensitivity and popularization and application of grating scale sensors

Although the reading head block made of ABS material injection molding has appeared on the market at present, ABS is a commonly used engineering material. Although the cost is low, its strength is low and it is easy to wear and tear, which cannot effectively solve the above problems.

Images