JB/T 8357.1-1996 CNC vertical drilling machine accuracy

This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of CNC vertical drilling machines. This standard applies to CNC vertical drilling machines with a maximum drilling diameter of less than or equal to 63mm. JB/T 8357.1-1996 CNC vertical drilling machine accuracy JB/T8357.1-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
CNC Vertical Drilling Machine
1 Subject Content and Scope of Application
This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of CNC vertical drilling machines. This standard applies to CNC vertical drilling machines with a maximum drilling diameter of less than or equal to 63mm. 2 Reference Standards
GB10931 Method for evaluating the position accuracy of digital controlled machine tools JB2670 General rules for precision inspection of metal cutting machine tools JB3051 Nomenclature of coordinates and movement directions of digital controlled machine tools 3 General Requirements
3.1 During inspection, the actual inspection sequence can generally be arranged according to the requirements of assembly and disassembly of inspection tools and convenience of inspection. 3.2 During the working accuracy inspection, the inspection of the test piece should be carried out after fine machining. JB/T 8357.1-96
3.3 When the measured length is different from the length specified in this standard, the tolerance shall be converted according to the measurable length in accordance with the provisions of 2.3.1.1 of JB2670. When the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. 3.4 The X, Y, and Z coordinate systems shall comply with the provisions of JB3051. 3.5 According to the agreement between the user and the manufacturer, the inspection items can be increased or decreased. 4
Pre-adjustment inspection
Item approved by the Ministry of Machinery Industry of the People’s Republic of China on 1996-04-22
Tolerance in mm
Ordinary grade
Precision grade
0.04/1000
Inspection method
Refer to the relevant provisions of JB2670
|The workbench and spindle box
are placed in the middle
position of their travel. Place a water-precision level in the center of the work surface: Level: a. In the YZ plane b. In the XZ plane In both the XZ and YZ planes, the level readings should not exceed the specified values ​​1996-07-01 implementation JB/T 8357. 1--96 8z'1*g'9 "q甲" 盗临临 "qto'o" s001800 "脆瓣蛹蛹州 JB/T 8357. 1-—96
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