GOST 20771-82
GOST 20771−82 carbide tips brazed type 35. The design and dimensions
GOST 20771−82
Group 56
INTERSTATE STANDARD
CARBIDE TIPS BRAZED
TYPE 35
The design and dimensions
Hard metal brazed tips type 35. Design and dimensions
ISS 77.160
OKP 19 6000
Date of introduction 1983−07−01
The decision of the State Committee USSR on standards on August 18, 1982 N 3278 date of introduction is established 01.07.83
REPLACE GOST 20771−75
REISSUE
1. This standard applies to bits for end mills with spiral tooth.
2. The design and dimensions of plates shall be as specified in the drawing and in the table.
Tooth screw right.
_____________
* Dimensions for molds.
Dimensions, mm
| The designation of crowns |
|
|
|
|
|
The number of teeth | |||||||
| nomin. | pred. off. |
||||||||||||
| 35010 | 10,5 | ±0,35 | 10 |
4,3 | 1,3 | 2,1 | 7,5 | 0,3 | 0,3 | 0,4 | 0,8 | 13° | 6 |
| 35030 | 12,5 |
12 | 5,5 | 1,5 | 2,3 | 9,0 | 0,4 |
||||||
| 35050 | 14,5 | ±0,40 | 8 | 6,5 |
2,5 | 11,0 | 0,5 |
0,5 |
|||||
| 35070 |
18 |
||||||||||||
| 35090 |
16,5 | ±0,50 | 10 | 7,8 | 1,8 | 2,7 | 11,5 | 0,5 | 0,6 | 1,0 | 13° | 6 | |
| 35110 |
20 |
||||||||||||
| 35130 | 19,0 |
10 | 9,2 | 2,0 | 3,0 | 12,8 | 0,8 |
1,2 | 11° | 8 | |||
| 35150 |
20 |
||||||||||||
| 35170 | 21,0 | ±0,60 | 15 | 10,5 |
3,2 | 14.4 V |
0,4 | 0,8 |
|||||
| 35190 | 23,0 |
11,8 |
3,5 | 16,0 |
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3. The size of the fractures on the working part of the crown should not exceed 0.5 mm; for non-working parts shall not exceed 0,8 mm.
4. The symbol of the crown — according to GOST 25393−90.
5. Approximate weight of bits specified in the application.
6. Technical requirements — GOST 2209−90.
APP
Reference
Approximate weight plates
| The designation of crowns | Rough weight of a plate g of hard alloy grades | ||||||
| Т5К10 |
Т14К8 | T15K6 | Т30К4 | Т5К12 | ТТ10К8Б | ТТ7К12 | |
| 35010 | 5,7 |
5,05 | 5,05 | 4,3 | 5,95 | 6,10 | 5,9 |
| 35030 | 11,3 |
10,00 | 10,00 | 8,5 | 11,80 | 12,10 | 11,7 |
| 35050 | 9,6 |
8,50 | Of 8.45 | 7,2 | 9,95 | Of 10.28 | 9,9 |
| 35070 | 24,2 |
21,50 | 21,30 | 18,1 | 25,10 | Of 25.91 | 25,0 |
| 35090 | 15,7 |
13,90 | 13,80 | 11,7 | 16,30 | 16,81 | 16,2 |
| 35110 | 32,9 |
29,20 | 29,00 | 24,6 | Of 34.10 | 35,22 | 33,9 |
| 35130 | 22,5 |
20,00 | 19,90 | 16,9 | 23,40 | 24,09 | 23,3 |
| 35150 | 51,5 |
45,60 | 45,40 | 38,6 | 53,40 | 55,13 | 53,1 |
| 35170 | 43,2 |
Of 38.30 | Of 38.00 | 32,4 | 44,80 | 46,25 | 44,6 |
| 35190 | 49,9 |
44,20 | 44,00 | 37,4 | 51,70 | 53,42 | 51,5 |
Continued
| The designation of crowns | Rough weight of a plate g of hard alloy grades | ||||||
| ВК3, ВК3М | VK4 | VK6, ВК6М, ВК60М |
VK8 | ВК10М, ВК100М |
ТТ8К6 | ТТ20К9 | |
| 35010 | 6,8 |
6,75 | Of 6.65 | 6,6 | 6,46 | 5,83 | 5,59 |
| 35030 | 13,4 |
13,40 | 13,20 | 13,0 | 12,81 | Of 11.56 | 11,08 |
| 35050 | 11,4 |
11,3 | 11,20 | 11,0 | Of 10.88 | Of 9.82 | 9,41 |
| 35070 | 28,7 |
28,50 | 28,20 | 27,9 | Of 27.43 | 24,77 | 23,72 |
| 35090 | 18,6 |
18,50 | 18,30 | 18,0 | 17,80 | Rate of 16.07 | Of 15.39 |
| 35110 | 39,0 |
38,70 | Of 38.30 | 37,9 | Of 37.28 | 33,67 | 32,25 |
| 35130 | 26,7 |
26,50 | Of 26.30 | 26,0 | 25,50 | Of 23.03 | 22,06 |
| 35150 | 61,0 |
60,60 | 60,00 | 59,3 | Of 58.37 | Of 52.77 | 50,49 |
| 35170 | 51,2 |
50,90 | 50,30 | 49,7 | 48,96 | 44,22 | 42,35 |
| 35190 | 59,1 |
58,80 | 58,10 | 57,4 | 56,55 | 51,07 | 48,92 |
