JB/T 9922.2-1999 This standard is a revision of ZB J55 045-89 "Center hole grinder accuracy". This standard is part of the JB/T 9922 "Center hole grinder" series of standards, which includes the following three parts: JB/T 9922.1-1999 Center hole grinder parameters JB/T 9922.2-1999 Center hole grinder accuracy inspection JB/T 9922.3-1999 Center hole grinder technical conditions This standard specifies the requirements and inspection methods for the geometric accuracy inspection and working accuracy inspection of center hole grinders. This standard is applicable to center hole grinders with a maximum workpiece diameter of 80~220mm and a maximum workpiece length of 500~2500mm. This standard was first issued in March 1989. JB/T 9922.2-1999 Center hole grinding machine accuracy inspection JB/T9922.2-1999 standard download decompression password: www.bzxz.net

ICS 75,U80.50
Machinery Industry Standard of the People's Republic of China
JB/T9922.1-9922.3—1999
Center Hole Grinder
1999-05-20 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
JB/T9922.2-1999
This standard is formulated on the basis of "Z5504539 center hole grinding accuracy". This standard is consistent with the technical content of 7155045-89, and has only been re-edited according to relevant regulations. This standard is part of the 9922 "Center Hole Grinder" series of standards: This series of standards includes the following: T9922.1-1999 Center Hole Grinder Parameters JB.9922.2-1999 Center Hole Grinder Condition Test JD 9922.3-1999 Center Hole Grinder Technical Conditions are implemented in accordance with the following standards This standard replaces ZBJ55045-89 from the date of implementation. This standard is issued by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is issued by the Metal Cutting Machine Tool Standardization Technical Committee of China. This standard was drafted by: Xinxiang Machine Tool Factory: This standard was first issued in March 1989.
Machinery Industry Standard of the People's Republic of China
Precision Inspection of Center Hole Grinders
JB9922.2-1999
Replacement 78355045--89
The standard specifies the geometric accuracy inspection and precision inspection of center grinders. Requirements and methods for precision inspection This standard is suitable for large-scale workpieces with a diameter of 80-200mm and a center hole grinding of 500-2500mm long workpieces: 2 Reference standards
The provisions contained in the standard constitute the provisions of this standard through the use of the numbers in this standard. The date of publication of this standard, the version shown is the original version. All specifications will be modified. The parties using this standard should discuss the possibility of using the following standard new knock rate. GB 174211-199 General Rules for Machine Tool Inspection Part 1: What is the accuracy of the machine under no-load or finishing conditions? 3 General requirements bzxz.net
3.1 When using this standard, the relevant provisions of GE/T17421.1-1996 shall be referred to. 3.2 Refer to 3.1 of GE/T17421.1-1998 to adjust the installation level. The readings of the level in the vertical and horizontal directions shall not exceed 0.02/1000. 3.3 Arrange the order of inspection according to the convenience of installation and inspection and the requirements of the inspection items. 3.4 When the measured length is different from the length specified in the water standard, the tolerance shall be calculated according to the provisions of 2.3.1.1 of GE/T17421.1-1996. When the calculated result is less than 0.001mm, it shall still be calculated as 0.001mm. 3.5 When inspecting the working accuracy, the test piece shall be inspected after the incubation. 6 According to the pre-production agreement before using the agent, the test items can be increased or decreased. The National Machinery Industry Corporation approved 1999-05-204
2000-01-01 clinical
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