JB/T 9902.1-1999 This standard is a revision of ZB J54 020-89 "Connecting rod bearing boring machine accuracy". During the revision, only editorial changes were made according to relevant regulations, and the technical content has not changed. This standard is part of the JB/T 9902 "Connecting rod bearing boring machine" series of standards, which includes the following two parts: JB/T 9902.1-1999 Connecting rod bearing boring machine accuracy inspection JB/T 9902.2-1999 Connecting rod bearing boring machine technical conditions This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy inspection of connecting rod bearing boring machines. This standard is applicable to connecting rod bearing boring machines used for automobile and tractor repair. This standard was first issued in March 1989. JB/T 9902.1-1999 Connecting rod bearing boring machine accuracy inspection JB/T9902.1-1999 Standard download decompression password: www.bzxz.net

ICS25.080.20
Machinery Industry Standard of the People's Republic of China
JB/T 9902,1-9902,2—1999
Connecting rod bearing boring machine
1999-05-20 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
JH/T902.1—1999
This standard is a revision of the accuracy of ZBJ54020-B9 multi-connecting rod bearing boring machine. It was revised according to relevant regulations and the technology has not changed.
This standard is part of the JB.T9902 "Connecting rod bearing boring machine" series of standards, which includes the following parts: JB/T9902.1-1999 Connecting rod bearing boring machine accuracy inspection JB79902.2-190 Connecting rod bearing boring machine, technical conditions and specifications 2BJ5402089, Shenzhen National Metallurgical Testing Machine Standardization Technical Committee proposed this standard, the National Metallurgical Cutting Machine Tool Standardization Technical Committee Station Boring Machine Branch! : This standard is responsible for drafting: Xi'an Special Machine Tool! , Shanghai Air Equipment Factory. This standard was first issued in March 1989.
) Scope
Machinery Industry Standard of the People's Republic of Chinabzxz.net
Connecting rod bearing boring machine
Accuracy inspection
JB7T 9902.1—1999
Generation 1542—
This standard specifies the requirements and inspection methods for the geometric accuracy inspection and working accuracy inspection of connecting rod bearing boring machine. This standard is applicable to the connecting rod bearing boring machine used for repairing automobiles and tensioning machines. 2 Reference standards
The provisions contained in the following standards have recently become technical standards through reference in the standard card. When this standard is published, the versions shown are all valid. All standard parts will be revised. All parties using this standard should explore the possibility of using the following standard version. B1182.1996
GB/T 19>8[980
Shape and position tolerances, definitions, symbols and drawing representations Shape and position tolerances Measurement regulations
GBT1742].1199R General rules for machine tool inspection Part 1: Geometrical dimensions of machine tools under no-load or machining conditions 3 General requirements
3.1 When this standard is used, the relevant provisions of RT17421.1 shall be referred to. There is no difference between the above two standards, namely the temperature rise of the air transportation station of the shaft and its working parts, the inspection force method and the inspection tool. 3.2 According to the provisions of 3.1 of GB17121.1-1998, the whole machine should be leveled, the workbench should be placed in the middle of the stroke, and a level gauge should be placed at the end of the machine (or a special test board). The vertical and horizontal readings of the level gauge should not exceed the values ​​specified by the manufacturer: 33 The first stage of the test can be carried out according to the requirements of the installation and inspection method, and the actual test items should be tested at the same time. 3.4 When the actual measured length is different from the length specified in this standard, the length that can be measured should be calculated according to the provisions of 2.3.1.1 of GB/17421.1-1998. When the conversion result is less than 0.005mm, it should be calculated as 0.005m. 3.51 When performing precision inspection, the test should be carried out after the precision inspection. 3.6 According to the agreement between the user and the benefit, the inspection items can be increased or decreased. Approved by the State Bureau of Machinery Industry on May 20, 1999 and implemented on January 1, 2000
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