Wood working flat drill bits performance test specification
（JB5739—1991）
1. Flat drill bits performance test should be proceeded with the precision standard drill machine.
2. The test material should use medium hard wood which the moisture content is less than 15%。
3. Cutting standard as following:
diameter （mm） | Cutting speed (m/min） | Feeding length (mm/r） | Drilling depth (mm) | Number of holes（pcs） |
6～10 |
25～30 |
0.1～0.3 |
3D |
25 |
11～20 |
0.3～0.5 |
20 | ||
22～40 |
2D |
15 |
4. After test, the flat drill bits should keep its used performance, can not have tipping and abrasion appearance.
Wood working drill bits performance test specification
（JB5737—1991）
1. Wood working drill bits performance test should be proceeded with the precision standard drill machine.
2. Cutting standard as following:
diameter (mm) | Feeding way | Cutting speed （m/min） | Feeding length (mm/r) | Drilling depth （mm） | number of holes （pcs） |
3 ～20 | Manual operation |
28～45 | 0.1～0.4 |
（3～5）d | 40 |
22～38 |
machine operation |
0.5～1.0 | 30 | ||
40～50 | 20 |
3. The test material should use medium hard wood which the moisture content is less than 15%。
4. Drilling blind hole
5. After test, the flat drill bits should keep its used performance, can not have tipping and abrasion appearance.