JB/T 9168.13-1998 General process code for cutting machining - fitter
Some standard content:
Ks 25.020
Standard of the Machinery Industry of the People's Republic of China
JB/T9168.1~9168.13-1998
Common process instructions for cutting1998-11·16Released
National Machinery Industry Standard
199812-01Implementation
Standard of the Machinery Industry of the People's Republic of China
Comnon mrocess instrictinns for cutting Proecss instructions foc bench ork2 The standard specifies the rules that the factory pliers should comply with, and the pliers of various industries such as the pliers should also comply with the provisions of 1B/9168.1
2 Reference standards
JB/T 9168.13-1998
Current Edition 16/23071383
The following standards contain provisions that are used in this standard and become the standard texts. The following versions are valid from the date of publication. All standards are divided into the following versions: JB/9168.11998
[-6.5-1008
JR/T 9168.11--:938
, J3/T 9153. 11.
1 Use of pliers
General rules for cutting
General rules for cutting
General rules for cutting
4.1: When using the workpiece to correct the surface, it is forbidden to use copper, and the material is lowered. After the workpiece has been polished, it will be broken or the slope will be broken. Thin-walled parts need to be V-shaped. 4,2! When cutting, the blade should be kept sharp and the hand should be sharp according to the material. s.1
Other metals
5.2 It is forbidden to use the material from both ends to form a whole. 6
6.1 The process of cutting the installation should be appropriate. Prohibition
50*-·60*
6,2 pieces of the Nosha Emperor's position when installed in the center should be based on the surprise certificate 1, room price dynamic.3 Steel sequence thin beer pipe. Natural: Hong Kong button tooth wrong killing: according to the thin extreme parts except the medical system. This two sides must be planned. In the implementation of the National Machinery Industry Approval
1998-12-01 Implementation
The relative bevel angle of the copper bar to the workpiece should be less than or equal to 5. Chain foot
JB/916813
7.1, according to the workpiece material, choose blunt small: gold color return plan virtual delivery with single western pattern, steel parts should use double tooth chain cutter, must not be used 7.2 according to the scale processing and precision or surface torque difficulty: select the chain cutter according to Table 2. Table 2
Add 1. Rough and reverse
2. 2-- 5. 5
r. ns~n. ?
R Small precision
u. 2 ~u. :
0. c1~t, tl
Do not cut the surface of the workpiece with oxidized iron scale. The chain must not be stained with oil. If there is oil on the tooth surface, it can be cleaned with kerosene and then reused. 8 Drilling wwW.bzxz.Net
0.I8/ 9168. 5..
9 When cutting these materials, ensure that the thread continues to be aligned with the end face of the workpiece, change the rotation, and withdraw the thread when necessary to remove the scratches. Select the lubricant reasonably according to the material of the workpiece. When reaming holes, use even force when pressing the hole by hand. When the blade is withdrawn, it must rotate forward and not reverse. 5IR/T9133.5. In this case, the workpiece material and the roughness of the hole should be considered. The lubricant should be selected rationally. n
100--25
6. 3 ~ 5. 2
11. Positive cutting indicator - generally red lead oil (Midan injection) is used, and the dilution should be appropriate. When using it, it should be applied thinly and evenly. The indicator should be kept clean, free of dust or dirt, but not too dry. The main points of cutting operation should be as specified in Table 3. 1. Scrape the quantity of the head of the person
2. Scrape can also be used in a plate T item length direction
3. In the interior should be 3. Point division
Adopt the method of guarding
3. Each formula should be separated from the previous trial direction 3. 2hm×2mu should be divided into 12~15 points - points should be evenly divided y points
1. Use the point tongue method to separate the time, each grinding point only to the knife without repeating the large tooth point scrape, the medium grinding point is not messy, and the grinding point is not 2. A 2m25mm reasonable point can be selected to meet the requirements 37
11.3 Curved surface scraping
JB9168.13—1998
11.3.1 When cutting a circular hole, a triangular scraper should be used. When scraping the front surface, a flat scraper or a semi-strong scraper should be used. 11.3.2 When scraping a bearing: The knife mark should be 43* and cross-cut with the bearing end. 11.3.3 When scraping a shaft, the number of contact points near the two ends should be greater than the number of points in the middle. In the surrounding direction, the contact points at the corners should be denser than the points at other parts.
12.1 Before grinding, the type and strength of abrasive should be selected according to the material and work requirements of the workpiece. For the selection of material type and strength, refer to Table A (Appendix A).
122 The grinding agent should be kept clean and free of impurities. The grinding agent should be adjusted carefully during use. The thickness should be uniform. 12.3 Selection and requirements of grinding tools
12.3.1 When grinding the surface, use: a flat grinding plate, and a flat grinding plate for fine grinding. 12.3.1 The grinding length of the outer surface of the grinding surface is generally 12 times the outer diameter of the workpiece, and the hole diameter should be larger than the workpiece diameter. 0.025~n.0smm.
12.3.3 The actual length of the working part of the grinding sample for grinding the round hole is generally 1.5 times the hole diameter of the negative room, and the inner diameter of the outer grinding surface is controlled to be 0.10~0.25m smaller than the hole diameter of the grinding plate. 12.3.4 The grinding depth of the grinding machine for grinding full-length surfaces should be 1.5 times the grinding length of the workpiece. 12.4 When grinding a flat surface, a combination of 8-axis rotation and direct grinding should be used. 12.4.2 When grinding the outer and inner holes, the distance between the shaft end and the shaft end should be 15 degrees. During the grinding process, attention should be paid to adjusting the tightness of the grinding sleeve and the lower part to avoid plate giant or pressing. During the hole grinding process, attention should be paid to timely removing the hole from the full gold mine to avoid production. 12.4.3 When grinding the surface, the grinding sample should be pulled out a little every 4~5 rotations. Then the piece is rushed into the narrow and narrow workpiece for continuous grinding. 12.4.4 When grinding thin workpieces, attention should be paid to the influence of temperature rise. The grinding direction should be changed continuously during grinding. 12.4.5 During the grinding process, the force should be even and stable, and the seat should not be too fast. 12.5 After grinding, the workpiece should be cleaned in time and anti-rust measures should be taken. 18
Abrasive type selection
The selection of abrasive types is shown in Table A1,
Workpiece sealing machine
Carbon, Shu and other fast, reduced green system
Rate, high-strength steel, high-song steel
Gradually able to support steel
High-strength steel, high-strength steel and other high-strength materials, Huang, non-metallic materials
Hard alloy, Xiang porcelain, gemstone, glass
Convenient signing, Baochan
Hard alloy, gemstone and other high-strength materials. Optical glass
Abrasive particle size selection
Material size selection is shown in Table A2.
Start torsion grinding (center 0
machine grinding [ratio, D. 4,~~K,D. 2C)
special grinding H,6.23~8,6,1>
standard grinding KD.1 center below>
JB/T916.131998
surcharge A
(Appendix to the instructions》
speed plug-in of the material type and tensile strength
installation A1 abrasive impact selection
processing requirements
consumption, material research||t t||Fine foundation, light
Ancestor fine soldiers
Concentrate, Hong Kong light
Table A2 rate material size selection
Female military violation
Artificial diamond
Regularization length, chemical road
Solution material light grouping
Light seat number
100*~240*
W40~W30
W14-w?
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