JB/T 9990.2-1999 This standard is a revision of ZB J41 006.2-88 "Technical conditions for straight bevel gear planing cutters". During the revision, the performance test chapter was deleted, and editorial changes were made in accordance with relevant regulations. Other technical contents remained unchanged. This standard is part of the JB/T 9990 "Straight bevel gear planing cutters" series of standards, which includes two parts: JB/T 9990.1: Basic types and dimensions JB/T 9990.2: Technical conditions This standard specifies the technical requirements for straight bevel gear planing cutters (hereinafter referred to as planing cutters), and the basic requirements for marking and packaging. This standard is applicable to planing cutters with a module ranging from 0.3 to 20 mm and a base of 20°. This standard was first published on the date of the year. JB/T 9990.2-1999 Spur bevel gear planing cutter Part 2: Technical requirements JB/T9990.2-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T9990.1-9990.2—1999
Straight Bevel Gear Planer
1999-05-20 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
JB T9990.2—[999
This standard is in accordance with 2BJ41006.288 "Technical Conditions for Straight Bevel Gear Planer", except for the performance test chapter in the appendix, and has been comprehensively revised in accordance with relevant regulations. Its technical content has not been changed. This standard is part of the JB/T9990 straight bevel gear precision planer series standard, which includes the following two parts: [B9990.1—1999 Straight Bevel Gear Planer is the first part: Part: Basic type and Dimensions IDT9990.2-1999 Straight chain inner wheel creation Part 2: No more than this standard will replace 2B41(6.2-88 from the date of implementation. This standard is under the jurisdiction of the Shandong National Standardization Technical Committee. Drafting unit: Harbin First Main Factory, or Shenzhen Tool Research Institute, 1
Machinery Industry Standard of the People's Republic of China
Straight bevel gear precision planing cutter
Part 2: Technical conditions
JE/T9990.2-1999||t t||ZJ41506.2—88
This standard specifies the technical requirements, marking and packaging requirements of the step wheel precision planer (hereinafter referred to as the planer for short) for domestic sales. This standard applies to the planer with a modulus of 0.3-20mm and a reference tooth angle of 20: 2 Technical requirements
2.1 The planer is made of W6Mo5C4V2 or high-speed steel with equivalent performance, and the hardness of the working part is 63-66IIRC. 2.2 The planer surface should not have decarburization layer and soft spots. 3.3 The surface should have scratches, Cracks, no scratches, blade, rust and burns, etc., which are defects that affect the performance. 24,000 (as shown in Figure 1) Surface roughness is in the table! Regulations: upper part
non-working
finished position,
water surface
knife surface
working surface
non-low
positioning
bottom surface and state surface
tooth pre-surface and suction surface certification surface
National Machinery Industry Bureau 1999-05-20 approved table roughness
R,3 20
2000-01-0T actual value
2.5 Dimensional tolerances, shape and position tolerances
2.5.1 The deviations of angles are shown in Table 2
2.5.2 The tolerances of tooth pre-width are shown in Table 2.
Deviations of number of inserts nms
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||2.5.5 The deviation of height H is js10.3.5. 6
Bottom width deviation is:Www.bzxZ.net
B>[8--30:
±0.055mm
±0.065mm
The deviation of angle β is 0
The deviation of total length is ti5
JRT9990.2—1999
> U.8-2.75
33 × 75
>2.75-6.5
43×100
±0:05
The deviation of the distance between the center line of the nail hole and the distance between the center line and the bottom surface is 0.30mm2. 5. 9
3 Marking and packaging
3.1 Marking
60 ×[25
>10-20
79 × 125
3.1.1 The bottom of the planer should be marked with: manufacturer's trademark, module, basic tooth shape, specifications, material (Putong high-speed steel is not marked) 3.1.2 The packaging box should be marked with: product name, manufacturer's name, address and trademark, module, basic tooth shape, specifications, material, number of pieces, manufacturing year, standard number,
3.2 Packaging
The planer should be treated with rust prevention before packaging: and measures should be taken to prevent damage during transportation. 9
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