JB/T 8768-1998 High-precision horizontal lathe accuracy inspection

This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of high-precision horizontal lathes. This standard is applicable to high-precision horizontal lathes with a maximum rotation diameter of 250~500 mm on the bed and a maximum workpiece length of up to 1500 mm. JB/T 8768-1998 High-precision horizontal lathe accuracy inspection JB/T8768-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8768-1998
High Precision Horizontal Lathe
Published on July 17, 1998
Precision Inspection
Implemented on December 1, 1998
National Bureau of Machinery Industry
JB/T 8768-1998
This standard is to meet the needs of the technical development of the film, aviation, electric card, instrumentation and other industries. On the basis of the production experience of high-precision horizontal lathe products in my country and the reference of relevant foreign product precision inspection forms, the ZBJ53UU2-37 high precision European lathe standard will be replaced from the date of implementation. 2B1530028?
This standard is proposed by the National Metal Cutting Machine Standardization Technical Committee. This standard is owned by the Shaka Research Institute:!
Original unit of this standard: Lathe Research Institute. 4 Standards were first issued in 1587.
Standard of the Machinery Industry of the People's Republic of China
High Precision Horizontal Lathe
Precision Inspection
JE/T8768-1998
This international standard specifies the requirements for the inspection of the axial precision and working accuracy of high-precision horizontal lathes. This standard is applicable to high-precision horizontal lathes with a maximum load diameter of 250~300mm and a maximum workpiece length of 1500mm.
Cited Standards
The texts contained in the following standards constitute the texts of the standards through reference in this standard. All technical documents are valid at the time of publication of this standard. All standard departments will be requested to revise them. The parties who produce technical standards should explore the possibility of using the latest version of the following engraved mark. [B267℃62 General Rules for Machine Tool Precision Inspection 3-General Requirements
3.1 Part 21.70)-82 3.1 Adjust the machine installation requirements. Place the damp plate in the middle of the guide rail. Place the level gauge on the two ends of the guide rail (or place the special bridge on the bridge). The horizontal and vertical readings of the level gauge should not exceed 0.03/10. 3.2 When inspecting the cylinder bed precision, the ambient temperature should be kept within the range of 15~25℃. However, the actual temperature should not exceed 5C3. The order of the inspection date listed in the second international inspection is the actual inspection order. The inspection tools and the position inspection liquid should be available for installation and disassembly. Carry out according to the order. .
3. When the workpiece is inspected, the test piece should be inspected at the beginning of the finishing process. 3.5 When the actual measured length is different from the standard length, the tolerance can be converted to the measured length according to the specification of B2570-8212.3.1.1. If the conversion result is less than 0.1, then the test piece should be inspected at the beginning of the finishing process. 8768- : 1908
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