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Linear grating scale of numerical control machine tool

A linear grating, CNC machine tool technology, applied in metal processing mechanical parts, measuring/indicating equipment, metal processing equipment, etc., can solve the problems of blurred optical imaging boundary, low anti-pollution ability, and difficult manufacturing, and achieve strong electrical signal. , The effect of strong anti-pollution ability and large etching grid moment

Inactive Publication Date: 2016-03-30
CHANGZHOU INST OF MECHATRONIC TECH
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to propose a linear grating scale for CNC machine tools, which solves the difficulty in manufacturing, fuzzy optical imaging boundary, and resistance Low Pollution Capability and Alarm Issues

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  • Linear grating scale of numerical control machine tool
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Embodiment Construction

[0019] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0020] Such as Figure 1-2 As shown, a linear grating scale for CNC machine tools, the first row is row A, with a grating line every 100 μm distance scale, and the second row is row B, with a grating line every 110 μm distance scale in row B. The middle grid line is a Z pulse, and a Z pulse appears every 110 μm, as a 0-bit pulse, which is convenient for the machine tool to record the absolute position and return to zero.

[0021] The schematic diagram of the optical imaging of the reading head is: the LED light source is powered by an external +5V, the light is concentrated by the condenser, passes through the scanning mask...

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Abstract

The invention relates to a linear grating scale of a numerical control machine tool. The linear grating scale of the numerical control machine tool comprises a number reading head and a grating scale body. The linear grating scale of the numerical control machine tool is characterized in that the grating scale body is provided with two rows of grating lines, namely, a first row of grating lines and a second row of grating lines; the first row of grating lines is scaled at equal distance, so is the second row of grating lines; the scaling distance of the first grating lines is greater than that of the first row of grating lines; pulse is between the first row of grating lines and the second row of grating lines. According to the linear grating scale of the numerical control machine tool, the method that two rows of A-B-phase grating lines are scaled at every 100 microns and are staggered in 10 microns is adopted, and the effective working grating torque is 10 microns, so that the manufacturing difficulty can be greatly reduced, and the oil-water pollution resistance can be effectively improved; the anti-interference performance of pulse signals generated by a photoelectric cell unit is high. The linear grating scale is high in novelty and creativity and high in practical value.

Description

technical field [0001] The invention relates to the field of numerical control machine tools, in particular to a linear grating ruler of a numerical control machine tool. Background technique [0002] Linear grating scales for CNC machine tools are mainly used in CNC milling machines, machining centers, boring machines, lathes and grinding machines. Linear grating scales have excellent dynamic performance. Because there is no mechanical contact and high movement speed, almost all feed axes are controlled by servo control loops. The best choice for equipment and equipment, able to meet the high dynamic performance requirements of the feed axis. [0003] The grating rulers commonly used in the market are almost all occupied by a few foreign brands. The commonly used grating pitches are 40 μm and 20 μm. In a few cases where ultra-high precision requirements are required, the grating pitch reaches 8 μm. Optical imaging scanning or optical interference scanning is mostly used to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/24
CPCB23Q17/24
Inventor 潘天堂陈新岳兴莲陈加平
Owner CHANGZHOU INST OF MECHATRONIC TECH
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