This standard specifies the requirements and test methods for the geometric accuracy of simple CNC horizontal lathes. This standard applies to simple CNC horizontal lathes with a maximum rotation diameter of 250 to 1250 mm and a maximum workpiece length of 8000 mm. JB/T 8324.1-1996 Simple CNC horizontal lathe accuracy JB/T8324.1-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Simple CNC Horizontal Lathe
1 Subject Content and Scope of Application
JB/T8324.1—96
Replaces JB/GQ1125--88
This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of simple CNC horizontal lathes. This standard applies to simple CNC horizontal lathes with a maximum rotary diameter of 250~1250mm on the bed and a maximum workpiece length of up to 8000mm.
2 Reference Standards
GB10931 Method for Assessing Position Accuracy of Digital Control Machine Tools JB2670 General Rules for Accuracy Inspection of Metal Cutting Machine Tools 3 General Requirements
3.1 Adjust the installation level in accordance with 3.1 of JB2670. Place the slide in the middle of the guide rail travel, place a level at both ends of the machine tool guide rail (or through a special bridge plate), and the readings of the level in the longitudinal and transverse directions shall not exceed 0.06/1000. 3.2 During inspection, the actual inspection sequence can generally be arranged according to the requirements of assembly and disassembly inspection tools, inspection convenience, and thermal inspection items. 3.3 During the working accuracy inspection, the test piece should be inspected after fine turning. 3.4 When the measured length is different from the length specified in this standard, the tolerance should be converted according to the measurable length in accordance with the provisions of 2.3.1.1 in JB2670. When the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. Approved by the Ministry of Machinery Industry of the People's Republic of China on April 11, 199664
Implementation on October 1, 1996bzxz.net
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