JB/T 8775-1998 JB/T 8775-1998 Closed type adjusting shims for machine tools JB/T8775-1998 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8775—1998
Enclosed Adjusting Shims for Machine Tools
Published on July 17, 1998
National Bureau of Machinery Industry
Implemented on December 1, 1998
JR/T8775·1998
This standard is formulated on the basis of summarizing the experience of many years of production of enclosed adjusting shims for machine tools. It can widely meet the needs of large, heavy and precision machine tools.
This standard was proposed by the Technical Committee for Standardization of Machine Tools, and was issued by the Beijing Machine Tool Research Institute of the Ministry of Machinery Industry. The drafting units of this standard are: Beijing Machine Tool Research Institute of the Ministry of Machinery Industry, Daihan Heavy Machine Tool Factory, Hanzhong Machine Tool Factory of Western Province! The main drafters of this standard are Zhang Minghua, Liu Sihai and Ma Juen. 1 Scope
Machinery Industry Standard of the People's Republic of China
Enclosed Adjustment Shims for Machine Tools
JB/T87T51998
This international standard specifies the structure, basic parameters and main dimensions, marking, technical requirements, test and inspection, marking, installation and storage of closed adjustment shims for machine tools [hereinafter referred to as shims]. This standard is widely applicable to various types of high-quality cutting machine tools, and other standards can be used for reference. 2 Referenced Standards
The texts contained in the following standards become the provisions of this standard through reference in this standard. When using this standard, the versions shown are all versions of the following standards. All standards are considered to be new versions. CB197-81
GB699-85
GB7S5-HA
GB42SB
GB 11352 B9
These general tolerances and fits (diameter 1 ~ s55r) Technical specifications for carbon steel castings
Ground castings
General engineering carbon steel parts
3 Structure, basic parameters and main dimensions
3.! Structure (benzene type heat shortage)
Potential iron clean structure see 1.
【Position: one body, one adjustment screw selection 4 one mountain screw selection: spherical center: block: bottom
3.2 Reduce the state number
National Machinery Industry Bureau 1998-07-17 approved 1998-12-01 implementation
Basic iron numbers see table
Portuguese fixed number
:0×104
:5×10
Main dimensions
Major load
12×10
Main dimensions of pad micro-factor 2 and table 2.
[B/T 8775—1998
Single according to the load
Km/IX1GN
Adjusting bolts and
Transfer section height area
Total section
Maximum quality
2>: 10*
4Type
JB/T R775—1998
According to the different types of machine tools, the pads are divided into type B and type H. The type is the ground screw grid that connects the main pad iron center through the center, which fixes the fastener to the machine tool and can be installed on the side. The installation diagram is shown in Figure 3. The screw is stolen.
Type A is a kind of ground screw price. There are two screws in the center of the whole iron. The pad has a double head and is lightly fixed to the machine tool. It can also be installed with examples. The installation example is 4. Table 3.
Type B is a ground screw price. The pad is different from the machine tool. It is pre-installed. 3Www.bzxZ.net
5 Marking
JB/T8775—1998
5.1 Some iron markings are represented by name, code Number, specification number, type code, foot inspection code and side top device number are collected as follows: Thermal lock
5.2 Marking example
Side prevention device code (do not note if not required)
Foot combustion control code (do not note if not required
Type code: A, H basic type do not note)
Specification number: 1-
Iron lead prohibited
Tax price is! The marked steel with the top mounting and anchor bolt in the number A is FDTASCJB/T8F5--1998
6. Technical requirements
6.1 Sliding material, the specification number is HT200 specified in B9439-8K or other metals with a strength not less than FT200. The specification wave number is 11352-89 standard 2G230-450 strength not less than 2G220-40 other materials. 6.2 The material of the joint ball, gasket, and adjusting screw is 5 steel specified in GB699-1 or other metal materials with arc change less than 10 bridges. 6.3 The material is HF203 specified in GB439R9 with a strength not less than 10 HR290 other metals. 6.4 The anchor bolts shall meet the requirements of GE799. The surface of the steel product should be bluing treated. The surface of the material should not have cracks, warping, or obvious blistering. (.6 The frequency pattern of the key joint parts should be H-grade internal frequency pattern and 6g-grade external thread according to CB19-81. 7 All moving parts should move smoothly. When no-load, they can be adjusted as needed, and the force can be felt. 6.B The appearance is flat and smooth, and shall not be loaded. Test and inspection
7.1 The size, quality, etc. of the machine 1 should meet the requirements of 3. Table 3 and the 5th table. 7.2 The test is delayed)
Turn the force up and press! Load the new load on the second working table of the testing machine, use the support, paste the code source, and calculate the adjustment bolt and point it in the clockwise direction 4
JB/T 87751998
The needle rotates to shorten the torque. If the next time (the first time) is repeated, the unit torque is calculated by the following formula: 124: /Q
Wherein, M, single package load N·m/1X10*, "-number of tests;
M. The first measured torque at rated load N·m: Q——rated load, 1×10N
The measured value of the unit load torque should not exceed the provisions of Table 1. 7.3 Maximum load test (sampling)
Put the cushion on the workbench and slowly load it to the maximum load , keep it for 5 minutes and then remove the load. All parts should be free of cracks and deformations, and the feeling of hanging should be able to maintain the ability to adjust. B. Marking, packaging and storage
8.1 The product logo should be clearly displayed in the whole product label: the content of the product label is as follows: i) Product name, model, b) Manufacturer's name, and b) Date of publication and manufacturing number.
8.2 Please do not use a box to pack, which should be moisture-proof, anti-collision and anti-condensation. The box should be accompanied by a product certificate. 8.3 The packaging box should have the manufacturer's name, model, manufacturer's name, date of publication, and other marks. 4 The product should be placed in a dry room
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