JB/T 8077.2-1999 This standard is a revision of ZB J55 008-87 "Broach Sharpening Machine Precision". This standard is part of the JB/T 8077 "Broach Sharpening Machine" series of standards, which includes the following three parts: JB/T 8077.1-1999 Broach Sharpening Machine Parameters JB/T 8077.2-1999 Broach Sharpening Machine Precision Inspection JB/T 8077.3-1999 Broach Sharpening Machine Technical Conditions This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of ordinary precision broach sharpening machines. This standard is applicable to ordinary precision broach sharpening machines with a maximum broach length of 800~2500mm. This standard was first issued in May 1987. JB/T 8077.2-1999 Broach grinding machine precision inspection JB/T8077.2-1999 Standard download decompression password: www.bzxz.net

ICS25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T 8077,1-80773—1999
Broach Grinding Machine
1999-05-20 Issued
State Machinery Industry Bureau
Implementation on 2000-01-01
[H/T077.2-1999
This standard is formulated on the basis of ZBJ55008—87 Broach Grinding Machine Accuracy. This standard is consistent with the technical content of ZB15500887, and has only been re-edited according to relevant regulations: This standard is part of the series of standards for broach grinders, which includes the following parts: JH/T8077-1999 Parameters of broach grinders
JH/T8077.2-1999 Accuracy inspection of broach grinders E/T8077.3-1999 Technical conditions for broach grinders This standard replaces ZBJ55008-87 from the date of implementation. This standard was proposed by the National Technical Committee for Standardization of Cutting Machine Tools. This standard was issued by the Grinding Branch of the National Technical Committee for Standardization of Cutting Machine Tools. The responsible unit of this standard is Wuhan Tool and Machine Research Institute. The standard was first revised and issued in May 1987.
1 Scope
Machinery Industry Standard of the People's Republic of China
Precision Test of Broach Blade Grinding Machine
JB/T 6077.21999
Generation 2J55208-87
This standard specifies the requirements and test methods for geometrical accuracy and working accuracy of broach blade grinders of ordinary precision grade. This standard is applicable to broach blade grinders of ordinary precision grade with large edge rate and broach length of 800-2500mm. 2 References
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The technical specifications are published consecutively and are not valid for all purposes. All standards will be revised, so all parties to this standard should discuss the possibility of using the latest version of the following standards: GB/T17421.1-1998 General Rules for Machine Tool Inspection Part 1: Under the condition of no negative or fine machining. 1. The machine should be installed horizontally according to 3.1 of GB/T17421.1-1998. The T pointer should be placed between the strokes, and a level gauge should be placed in the middle of the workbench. The vertical and horizontal settings of the level gauge should not exceed 0.04/1000. 3.2 During the inspection, the inspection tools and inspection convenience and the requirements of the inspection items can be generally controlled to arrange the actual inspection order. 3.3 The precision inspection is carried out after the test piece is finely ground. 3.4 When the actual measured length is different from the length specified in this standard, the tolerance shall be converted according to the length that can be measured according to 2.3.1.1 of GB/T17421.1-1998. When the conversion result is less than 0.005mm, it shall still be calculated as 0.005mm. 3.5 The length parallel to the T-shaped plate of the workbench is called the longitudinal direction, and the horizontal direction perpendicular to the T-shaped plate of the workbench is called the transverse direction. Approved by the National Machinery Industry Bureau on May 20, 1999, 4
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