JB/T 9915-1999 This standard is a revision of ZB J55 012-87 "Precision of vertical double-end surface grinders". The standards that match this standard are: GB/T 7177-1987 Parameters of double-end surface grinders JB/T 9907.1-1999 Series of double-end surface grinders JB/T 9907.2-1999 Technical requirements for manufacturing and acceptance of double-end surface grinders This standard specifies the requirements and inspection methods for geometric accuracy inspection and working accuracy inspection of vertical double-end surface grinders. This standard is applicable to general-purpose through-feed vertical double-end surface grinders or disc-feed vertical double-end surface grinders with grinding wheel outer diameters of 400~750mm. This standard was first issued in May 1987. JB/T 9915-1999 Vertical double end grinding machine precision inspection JB/T9915-1999 standard download decompression password: www.bzxz.net

[CS35.080.50
Machinery Industry Standard of the People's Republic of China
JB/T9915—1999
Vertical Spindle Double End Surface Grinding Machine
Published on 1999-05-20
National Bureau of Machinery Industry
Precision Inspection
2000-01-01 Implementation
JB/T 9915—[999
This standard is formulated on the basis of ZBJ55012B7 Vertical Spindle Double End Surface Grinding Machine Precision: The original version was formulated with reference to the requirements of the same foreign import standard.
The technical content of the standard is consistent with that of 7RJ55012-87, and it has only been re-edited according to relevant regulations. The standards that match the non-standard are GB/T7177-1987, JB/T9907.1-1999, JB/T9907.2-19 ... www.bzxz.net
1 Scope
Machinery Industry Standard of the People's Republic of China
Vertical Spindle Double-End Surface Grinding Machine
Precision Inspection
JB/T9975-1999
J5501287
This standard specifies the requirements for the precision inspection and working precision inspection of vertical spindle double-end surface grinding machines and the inspection force. This standard is applicable to grinding wheels with an outer diameter of 400~7501um, and is used for feeding vertical spindle double-end grinding machines or measuring feeding vertical spindle double-end surface grinding machines.
2 Referenced Standards
The provisions contained in the following standards constitute the text of this standard through their use in this standard. The versions shown are valid at the time of publication of the standard. All standards are open to revision. Parties using this standard should consider the possibility of using the latest versions of the following standards. GB/17421.11998 General Rules for Machine Tool Inspection Part 1: Geometrical Accuracy of Machine Tools Under No-load or Load Conditions 3 General Requirements
3.1 When using this standard, refer to the relevant provisions of GB/T17421.1. In particular, the installation before inspection, the idling temperature of the spindle and other components, the inspection method and the inspection process, and the inspection accuracy. 3.2 Refer to the provisions of 3.1 of GB/T17421.1-1998 to adjust the installation level. The readings of the level in the vertical and horizontal directions shall not exceed C.04/1CW.
1. 3 Before inspection, the actual inspection order can be arranged according to the requirements of the inspection items. 3. When the measured length is different from the length specified in this standard, the difference should be converted according to the length that can be measured according to the provisions of 2.3.1.1 of GB/T17421.1-1998. When the conversion is less than 0.001mm, it is still calculated as 0.001mm. 3.5 During the working accuracy inspection, the test piece should be inspected after grinding. 3. (According to the agreement between the user and the manufacturer, the inspection items can be increased or decreased. Approved by the State Administration of Machinery Industry on May 20, 1999 and implemented on January 1, 2000.
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