JB/T 9925.1-1999 This standard is a revision of ZB J55 050-90 "Precision of worm grinders". During the revision, editorial modifications were made according to relevant regulations, and the technical content has not changed. This standard is part of the JB/T 9925 "Worm grinder" series of standards, which includes the following two parts: JB/T 9925.1-1999 Precision inspection of worm grinders JB/T 9925.2-1999 Technical conditions for worm grinders This standard specifies the requirements and inspection methods for geometric accuracy inspection and working accuracy inspection of worm grinders. This standard is applicable to mobile table and ordinary precision worm grinders with a maximum workpiece diameter of 125~320mm and a maximum workpiece length of 500~2500mm. This standard was first issued in July 1990. JB/T 9925.1-1999 Worm Grinding Machine Accuracy Test JB/T9925.1-1999 Standard Download Decompression Password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JR/T 9925.1~9925.2—1999
Worm grinder
1999-05-20 Issued
China Machinery Industry Bureau
2000-01-01 Implementation
JR.T9925.1-1999
This standard amends the full range of ZB)55050-n≤guide grinder: When revising, only the relevant provisions are modified periodically, and the technical rate is not changed.
This standard is part of the JB/T9925 series of standards for "worm grinders": The series of standards includes the following two parts: 9925.1:1999 Test of cigarette machine tools
JB9925.2-1999 Technical conditions for worm grinding This standard replaces the ZB155050-90 standard from the date of implementation. This standard was proposed by the National Technical Committee for Standardization of Metallurgical Machinery and the Mineral Deposits Standardization Technical Committee of the State Mineral Deposits Standardization Branch:: The sponsor of this standard: Hanjiang Machine Tool Factory, this standard was first issued in July 1990.
-Scope
Machinery Industry Standards of the People's Republic of China
Worm Grinding Machines
Precision Test | |tt||This standard specifies the requirements and tests for the worm grinding and the working quality inspection. JB.T9925.1-1999
2855050---90
This standard is applicable to worm grinders with a maximum workpiece diameter of 125-320mm, a maximum workpiece length of 500--2500mm, and a movable working table.
2 Referenced standards
The provisions contained in the following standards are incorporated into the provisions of this standard by reference in this standard. When this standard is published, all versions are valid. New revisions will take effect. All parties to this standard shall use the latest version of the following standards. GD17421 .1-1998 Machine tool inspection usually Part 1: Under no-load or precision conditions, such as the following: 3.1 When using this standard, the relevant provisions of GB/T [7421.1 should be referred to, especially the temperature rise of the idle operation of the shaft and other parts before inspection, the inspection method and the test conditions of the equipment. J.2 Refer to the provisions of 3.1 in GD/T17421.1-1998 to adjust the installation level. The readings of the level in the longitudinal and transverse directions shall not exceed 0.027!000.
3.3 Before inspection, the requirements of the assembly and disassembly workers and the inspection force and heat absorption items can be generally arranged in the actual inspection order. 3.4 When the measured length is different from the length specified in this standard, it is allowed to The overall summary: 0T1742t.1-19982.3.1.1 can be used as the length of the example, when the calculation result is less than 0.001mm, it is calculated as n.001mm. 3.5: When inspecting the working viscosity, the inspection of the parts shall be carried out after the inspection. 3.6 According to the agreement between the user and the manufacturer, the inspection items can be increased. 3.7 When inspecting the accuracy of the machine tool, the temperature shall be kept within 20%±1℃. Approved by the State Machinery Industry Bureau on May 20, 1999, and implemented on January 1, 2000. 9925.1 -1999
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