JB/T 9917.1-1999 This standard is a revision of ZB J55 021-88 "Multi-purpose grinder accuracy". This standard is part of the JB/T 9917 "Multi-purpose grinder" series of standards, which includes the following two parts: JB/T 9917.1-1999 Multi-purpose grinder accuracy inspection JB/T 9917.2-1999 Multi-purpose grinder technical conditions This standard specifies the requirements and inspection methods for the geometric accuracy inspection and working accuracy inspection of multi-purpose grinders. This standard is applicable to multi-purpose grinders with a maximum workpiece rotation diameter of 200~250mm and a maximum worktable travel of 500mm. This standard was first issued in 1979 as JB 2612-79, and was first revised in 1988 as ZB J55 021-88. This is the second revision. JB/T 9917.1-1999 Multi-purpose grinding machine precision inspection JB/T9917.1-1999 standard download decompression password: www.bzxz.net

ICS 25.080.50
Machinery Industry Standard of the People's Republic of China
JBT9917,1~9917.2-1999
Multi-purpose grinder
Published on 1999-05-20
National Machinery Industry Week
Implementation on 200-01-1
JB/T9917.1-1999
The standard was formulated on the basis of ZBJ55021-Multi-purpose grinder accuracy. This standard is consistent with the technical content of 7.R155021-88, and has been re-edited according to relevant regulations. This standard is a part of the J/T9917 (multi-purpose grinder series standard. The series of standards includes the following two parts: J/T9917.1-1999 Multi-purpose grinder precision inspection B/T9917.2-1999 Multi-purpose grinder technical conditions This standard replaces ZBJ55021-88 from the date of implementation. This standard is proposed by the National Technical Committee for Standardization of Cutting Machine Tools. This standard is from the National Technical Committee for Standardization of Cutting Machine Tools. The responsible person for this standard is: Jianyin Machine Tool Factory This standard was first issued in 1979 as B2612-79. It was revised for the first time in 1988, and this is the second revision. 1 Scope
Machinery Industry Standards of the People's Republic of China
Multi-purpose grinding precision inspection bzxZ.net
This standard specifies Requirements and inspection methods for geometric accuracy and working accuracy of multi-purpose grinding machines, JB/T9917.1-1999
Reference 5(021
: This standard applies to practical grinding machines with a large workpiece rotation diameter of 200-250mm and a maximum worktable stroke of 500mm. 2 Referenced standards
The meanings contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid: All standard departments have been revised. The parties using this standard should discuss the possibility of using the following standards as new versions. GH7182-1996
General rules, definitions, symbols and drawing representations of shape and position tolerances, core H door 17421.11998: General rules for machine tool inspection Part 1: In the absence of negative estimation or precision machining 1 Conditions 1 Geometric accuracy of machine tools 3 General requirements
3.1 According to 3.1 in GB/T17421.1-1998, install the machine tool horizontally, place the workbench in the middle of the path, and place a spirit level in the middle of the workbench. The vertical and horizontal readings of the spirit level should not exceed 0.040. 3.2: During the inspection, the inspection tools and inspection methods can generally be installed. The requirements of the inspection items and the actual inspection sequence are as follows. 3.3 The inspection of the test piece should be carried out after the precision inspection. 3.4 When the actual measuring disc length is different from the length specified in this standard, it should be converted according to the length that can be measured in 2.3.1.1 of GB/T17421.1→1998. When the conversion result is less than 0.001mm, it should still be calculated as 0.001mm. 3.5 According to the user "User and manufacturer" "agreement, inspection items can be reduced. National Machinery Industry Bureau 199-05-20 approved
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