This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of CNC universal tool milling machines. This standard applies to general-purpose CNC universal tool milling machines with a horizontal (universal) worktable width of 200~630 mm. JB/T 8486.1-1996 CNC universal tool milling machine accuracy inspection JB/T8486.1-1996 Standard download decompression password: www.bzxz.net

JB/T8486.1--96
This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of Beijing Milling Machine Research Institute. The drafting units of this standard are Kunming Milling Machine Factory, Qinghai No. 1 Machine Tool Factory, Beijing Instrument Machine Tool Factory, Wuhan No. 4 Machine Tool Factory, Tianjin No. 6 Machine Tool Factory, Beijing Milling Machine Research Institute, Nantong Machine Tool Co., Ltd. and Wannan Machine Tool Factory. 355
Standards of the Machinery Industry of the People's Republic of China
Precision Inspection
CNC Universal Tool Milling Machine
JB/T8486.1--96
This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of CNC universal tool milling machines. This standard is applicable to general-purpose CNC universal tool milling machines with a horizontal (universal) worktable width of 200 to 630 mm. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB10931-89 Method for evaluating the position accuracy of digital control machine tools JB2670-82 General rules for precision inspection of metal cutting machine tools 3 General requirements
3.1 Adjust the installation level according to 3.1 in JB2670-82. Place the workbench in the middle of its stroke, place a level in the center of the workbench, and the readings of the level in the longitudinal and transverse directions shall not exceed 0.04/1000. 3.2 During the inspection, the actual inspection sequence can generally be arranged according to the requirements of the installation and disassembly inspection tools, inspection convenience, and thermal inspection items. 3.3 When inspecting the working accuracy, the inspection of the test piece should be carried out after fine machining. 3.4 When the actual measured length is different from the length specified in this standard, the tolerance should be converted according to the length that can be measured according to the provisions of 2.3.1.1 in JB2670-82. When the conversion result is less than 0.005mm, it is still calculated as 0.005mm. 3.5 The direction parallel to the T-slot of the worktable is called the longitudinal direction, and the horizontal direction perpendicular to the longitudinal direction is called the transverse direction. 3.6 The vertical plane parallel to the longitudinal direction is called the longitudinal plane, and the vertical plane perpendicular to the longitudinal plane is called the transverse plane. 3.7 The non-follow-moving moving parts (spindle sleeve, suspension beam, tool bar bracket) should be locked and read during inspection. 3.8 The coordinate codes of each motion of the machine tool are shown in Figure 1. 3.9 According to the agreement between the user and the manufacturer, the inspection items can be increased or decreased. Z
Figure 1 Coordinate codes of each motion of the machine tool
Approved by the Ministry of Machinery Industry of the People's Republic of China on November 7, 1996356
Implementation on January 1, 1997
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