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Time of issue:2020-03-16 00:00:00

Hangzhou Jinfeng Machinery Co., Ltd.

Address: Liangzhu Industrial City, Hangzhou, China

Tel: +86-571-88771186  88771187

Fax: +86-571-88771767

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What are the methods for positioning accuracy inspection of CNC drilling and milling machines?

Release date:2020-03-04 20:33
Numerical control drilling and milling machine is an abbreviation of digitally controlled drilling and milling machine, which is an automatic drilling and milling machine equipped with a program control system. The control system can logically process the program specified by the control code or other symbolic instructions, decode it, and express it with coded numbers. Nanjing Fourth Drilling and Milling Machine Co., Ltd. inputs the numerical control device through the information carrier. After the arithmetic processing, various control signals are sent from the numerical control device to control the movement of the drilling and milling machine, and the parts are automatically processed according to the shape and size required by the drawing.
 
The positioning accuracy of CNC drilling and milling machine refers to the position accuracy that can be achieved by the movement of each coordinate axis of the drilling and milling machine under the control of a numerical control device. The positioning accuracy of CNC drilling and milling machines can be understood as the movement accuracy of drilling and milling machines. Ordinary drilling and milling machines are manually fed. The positioning accuracy is mainly determined by the reading error, while the movement of the CNC drilling and milling machine is realized by digital program instructions, so the positioning accuracy is determined by the CNC system and mechanical transmission errors. The movement of each moving part of the drilling and milling machine is completed under the control of a numerical control device. The accuracy that can be achieved by each moving part under the control of program instructions directly reflects the accuracy that can be achieved by the processed parts. Therefore, positioning accuracy is very important. Test content.
 
1, Linear motion positioning accuracy detection
 
The accuracy of linear motion positioning is generally carried out under no-load conditions of the drilling and milling machine and the table. According to the national standards and the International Organization for Standardization (ISO standards), the inspection of CNC drilling and milling machines should be based on laser measurement. In the absence of a laser interferometer, for general users, a standard scale and an optical reading microscope can be used for comparative measurements. However, the accuracy of the measuring instrument must be 1-2 levels higher than the accuracy of the measurement.
 
In order to reflect all the errors in multiple positioning, the ISO standard stipulates that each positioning point is calculated by the average of five measurements and the scattered difference -3 scattered difference band.
 

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Time of issue:2020-03-16 00:00:00

Hangzhou Jinfeng Machinery Co., Ltd.

Address: Liangzhu Industrial City, Hangzhou, China
WeChat:barbie0730
Phone:13958236777
Fax: +86-571-88771767

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Time of issue:2020-03-16 00:00:00
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