This standard specifies the requirements and methods for the geometric accuracy inspection and working accuracy inspection of steel ball optical ball machines. This standard applies to vertical and horizontal steel ball optical ball machines with optical ball plate diameters of 500 to 50 mm. JB/T 9920.1-1999 Accuracy inspection of steel ball optical ball machines JB/T9920.1-1999 Standard download decompression password: www.bzxz.net

[CS25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T9920.1-9920.2—1999
Steel Ball Optical Meter
1999-05-20 Issued
National Bureau of Machinery Industrywww.bzxz.net
2000-01-01 Implementation
JB/T9920.1-1999
This standard is based on ZDJ55042—B9 Steel Ball Optical Meter Accuracy. This standard is consistent with ZDJ55042—B9, only the relevant provisions have been re-edited. The standard is part of the J9920 Steel Ball Optical Meter series of standards. This series of standards includes the following two parts: JB/T9920.1— 1999 ball polishing machine, precision inspection JB: T9920.2-1999 steel ball polishing machine technical conditions and the standards of this standard are:
3B.T80B1.1-1999 steel ball polishing machine parameters IBTB0B1.2-1999 steel ball polishing machine: series type 4 This standard will be replaced by 2BJ55042-89 from the implementation of the H, this standard is proposed by the National Metal Cutting Machine Standardization Technical Committee. This standard is drafted by the National Metal Cutting Machine Standardization Technical Committee Grinding Branch. The responsible drafting unit of this standard is: Xinxiang Machine Tool Factory. This standard was first issued on March 30, 1989. Scope
Machinery Industry Standards of the People's Republic of China
Precision Inspection
Steel Ball Polishing Machine
JBrT9920.1-1999
2 1 (2-
The standard specifies the requirements and inspection methods for the geometric accuracy inspection and operation accuracy inspection of steel ball polishing machines. This standard applies to vertical and horizontal steel ball polishing machines with a polishing plate diameter of 500-950mm. 2 Referenced standards
The texts contained in the following standards become the provisions and technical standards of this standard through reference in this standard. The publication date and the version shown are all valid. All standards are subject to revision. The parties using this standard should discuss and use the following standard in accordance with the possibility of new versions. GB/T 1742[.1-.1993 General Rules for Final Inspection of Machine Part 3: Geometric Accuracy of Visual Meters under No-Load or Precision Conditions 3 General Requirements
3.1 When using this standard, the relevant provisions of GB/T[7421.1 shall apply. In particular, the pre-inspection installation, room temperature increase of the spindle and other components, and the inspection of the sample area inspection 1 are provided. 3.2 Refer to GB/T 1742 1.1-1998 3.1 provisions of the adjustment of the installation level, the horizontal setting in the longitudinal and orange reading efficiency does not exceed 0.041000
3.3 before the test - generally can be equipped with military tools and control methods, heat test general requirements of the actual test hall 3.4 when the measured length is different from the length specified in this standard, the difference should be based on GB/T17421.1-1998 2.3.1.1 provisions of the control to adjust the measurement length and width of the folding Calculate, the nose is less than 0.005mm, still change to 0.005mm, 3.5 When inspecting the workpiece, the inspection should be carried out after polishing. 3.5 According to the agreement between the user and the manufacturer: the inspection items can be increased or decreased. Home Machinery Czech Industry 1999-05-20 approved
2000-01-01 implementation
.1B9921.1-1999
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JB/T 9920.1- [999
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JH/T9920.1-1909
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