JB/T 9898-1999 This standard is a revision of JB 4242.2-86 "Accuracy of Sliding Universal Radial Drilling Machines". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. The standards matching this standard are: GB/T 2815-1989 Drilling Machine Spindle End JB/T 6335.1-1999 Radial Drilling Machine Series JB/T 6336-1992 Technical Conditions for Universal Radial Drilling Machines This standard specifies the requirements and inspection methods for the geometric accuracy inspection and working accuracy inspection of sliding universal radial drilling machines. This standard is applicable to sliding universal radial drilling machines with a maximum drilling diameter of 40~80mm. This standard was first issued in July 1986. JB/T 9898-1999 Sliding seat universal radial drilling machine precision inspection JB/T9898-1999 standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T9898—1999
Sliding Seat Universal Radial Drilling Machine
Precision Inspection
1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JE/T9898-1999
This standard is the revision of J4212.2-% "Sliding Seat Universal Radial Drilling Machine Precision Inspection". When it is renewed, it shall be carried out in accordance with relevant regulations! No scientific modification shall be made, and the technical content shall not be changed.
The standards that have changed from this standard are:
GB/T 28t51989
JB/T 6335.1—1999
JB/T6336—1992
Drilling, spindle parts
Rotary bed series
Technical conditions for universal drilling machines
Appendix A of this standard is the appendix of the standard.
This standard shall replace 4242.2—86 from the date of implementation. This standard was proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of the Drilling Branch of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The responsible drafting units of this standard are: Zhongjie Youjing and Dajin Fourth Machine Tool Factory. This standard was first issued in July 1986.
1 Specification
Machinery Industry Standard of the People's Republic of China
Sliding seat universal radial drilling machine
Precision Inspection
JB9898-199
Generation B 4242.28h
This standard specifies the requirements and methods for the geometric accuracy inspection and working accuracy inspection of sliding seat universal radial drilling machine. It is applicable to sliding seat universal radial drilling machine with maximum drilling diameter of 40-80mm. 2 Referenced Standards
The provisions contained in the following standards have become the provisions of this standard through introduction and use in this standard. When this standard is issued, all the provisions shown in them are valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards: GH17421.1—[998 In-machine inspection rules Part 1: Geometric accuracy of machine tools under no-load or die-adding conditions 3 General requirements
3.1 When using this standard, consider referring to the relevant provisions of GB/T17421.1. Especially the idle running temperature rise of the installed clamping shaft and other components before inspection, the accuracy of the inspection methods and inspection tools, 3.2 Before inspection, the actual inspection order can generally be maintained according to the requirements of the installation and disassembly tools and inspection methods, and the requirements of the heat inspection items. 3.3 When the actual measured length is different from the length specified in this standard, the difference should be converted according to the measurable length according to the provisions of 2.3.1.1 in GB/T17421.1199R. When the calculated result is less than 0.00, it is still calculated as 0.001mm. 3.4 The longitudinal plane referred to in the standard is a vertical plane passing through the axis of the main spindle (when the main spindle is in a true state) and the vertical axis 1 and parallel to the bed guide rail. The tooth clamping surface is a vertical plane passing through the axis (when the main spindle is in a vertical state) and perpendicular to the longitudinal plane: 3.5 If there is no special provision for the machine tool parts in the "Inspection Method" column in Section 5 of this standard, the main spindle should be in the normal position, the oil tank and the rotary box should be in the zero position and clamped, and the shaft, the cylinder and the slide should be in the middle position of the travel respectively, and the shaft should be in line with the bed guide rail. 3.6 According to the agreement between the manufacturer and the manufacturer, the inspection items can be increased. Approved by the State Bureau of Machinery Industry on May 20, 1999 and implemented on January 1, 2000
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Time Record A
【Appendix to the Standard】
Corresponding Relationship between F Value and Drilling Diameter
Corresponding Relationship between F Value and Drilling Diameter of Vertical Drilling Machine Table A1. A
Maximum Drilling Diameter
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