This standard applies to ordinary gear shaping machines with a maximum workpiece diameter of 200 to 3150 mm. The order of precision inspection items listed in this standard does not represent the actual inspection order. In order to facilitate the installation and disassembly of inspection tools and inspection, inspections can be carried out in any order. GB/T 4686-1984 Gear shaping machine precision GB/T4686-1984 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Gear shaping machines -Testing of the accuracy
Gear shaping machines -Testing of the accuracy This standard applies to ordinary gear shaping machines with a maximum workpiece diameter of 200~3150mm. UDC 821.913
Yidongyidian
GB 4686--84
The order of accuracy inspection items listed in this standard does not represent the actual inspection order. In order to facilitate the installation and disassembly of inspection tools and inspection, the inspection can be carried out in any order.
1 General requirements
1.1 When using this standard, refer to JB2670-82 "General Rules for Accuracy Inspection of Metal Cutting Machine Tools", especially the installation before accuracy inspection, the idle running temperature rise of the spindle and other components, the inspection method and the accuracy of the inspection tool. 1.2 Refer to Article 3.1 of JB 2670 to adjust the installation level of the machine tool. The readings of the level in the longitudinal and transverse directions shall not exceed 0.04/1000. 1. 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 Item 2.3.1.1 of JB2670. When the conversion result is less than 0.001mm, it shall still be calculated as 0.001mm. 1.4 For machine tools with unloading devices, they shall be inspected in the unloading state. 1.5 The vertical plane passing through the axis of the worktable and the axis of the tool spindle is called the longitudinal plane of the machine tool, and the vertical plane perpendicular to the longitudinal plane is called the transverse plane.
Published by the National Bureau of Standards on September 28, 1984
Implemented on August 1, 1985
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This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by Tianjin Gear Machine Tool Research Institute and other units. From the date of implementation of this standard, the former First Ministry of Machinery Industry Standard B158-75 "Gear Shaping Machine Accuracy" shall be used as
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