This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of camshaft lathes. This standard is applicable to camshaft lathes with a maximum workpiece rotation diameter of 130 mm, a maximum workpiece length of 1500 mm, and a hydraulic profiling tool holder for machining cam surfaces. JB/T 8769.1-1998 Camshaft lathe accuracy JB/T8769.1-1998 Standard download decompression password: www.bzxz.net

The Machinery Industry Standard of the People's Republic of China
JB/T 8769.1
Camshaft Lathe,
Published on July 17, 1998
Precision Inspection
1998-12-2008
National Machinery Industry BureaubZxz.net
JB/T8769.1
This standard is formulated to meet the needs of the automobile and locomotive industry, based on the requirements of the tertiary industry of my country's camshaft lathe products and the requirements of users, and with reference to the precision inspection standards of lathes. This standard is under the general title of wheel axle lathes, including the following two parts: Part 1 (i.e. JB/T8765.1): Precision inspection; Part 2 (i.e. J/T87.2): Technical conditions. This standard was proposed by the National Technical Committee for Standardization of Cutting Machine Tools and was issued by Shenyang 4th Machine Tool Research Institute.
This standard is issued by the Zhanyang Lathe Research Institute. Scope
Standard of the People's Republic of China for the machinery industry
Camshaft lathe
Precision inspection
This standard specifies the requirements and inspection methods for the geometric precision and working precision of camshaft lathes. JB/T8769.11998
This standard is applicable to camshaft lathes with a maximum workpiece rotation diameter of 130m, a maximum workpiece length of 15mm, and a mechanical stop 4 tool holder plus L cam surface.
2 Referenced standards
The following standards contain provisions that constitute the provisions of this standard by reference in this standard. When this standard was published, the versions shown were all valid. All relevant departments will be diagnosed and approved. All parties using this standard should explore the possibility of using the new version of the standard below. 2670-B2 General Rules for Precision Inspection of Machine Tools Before Inspection
3.1 Before inspection of machine tools, the installation level of the machine tools should be adjusted according to 3.1 of JR2670-R2. The readings of the level gauge in the longitudinal and transverse directions should generally not exceed 0.04/1000.
3.2 The general order of precision inspection items specified in this standard does not represent the actual inspection order. During inspection, for the purpose of assembling and disassembling inspection tools and inspection convenience, the inspection can be carried out in any order.
3.3 The following precision inspection should be carried out on the test piece after precision inspection. 3.+ When the actual length is different from the length specified in this standard, the tolerance can be converted according to the measurable length according to the provisions of 3.3.1.1 of B2670:82. The conversion is 0.05m1m. 0.005mGuo Cai Ji Jie Industrial Products 1998017 approved
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