How to sharpen aluminum drill bits: hot topics and practical guides on the Internet
Recently, the use and maintenance of aluminum drill bits have become one of the hot topics in tool topics. Especially among DIY enthusiasts and small processing plants, how to correctly grind aluminum drill bits to extend their service life has attracted much attention. This article will provide you with structured data and practical guidance based on popular discussions across the Internet in the past 10 days.
1. Statistics of hot topics related to aluminum drill bits across the entire network (last 10 days)
| Platform | Topic keywords | amount of discussion | heat index |
|---|---|---|---|
| Zhihu | Aluminum drill bit grinding tips | 1,200+ | 85 |
| Station B | Aluminum drill bit grinding tutorial | 800+ | 78 |
| Douyin | Aluminum drill bit maintenance misunderstandings | 3,500+ | 92 |
| Baidu Tieba | Aluminum drill bits vs steel drill bits | 2,100+ | 88 |
2. List of essential tools for aluminum drill bit grinding
| Tool name | Purpose | Recommended brands |
|---|---|---|
| Diamond whetstone | Finely ground edge | DMT |
| Angle measuring instrument | Maintain standard edge angle | Mitutoyo |
| coolant | Prevent overheating annealing | Mobilcut |
| magnifying glass | Check cutting edge status | SE |
3. Comparison table of standard parameters for aluminum drill bit grinding
| Drill diameter (mm) | Recommended edge angle (degrees) | Back angle (degrees) | Helix angle (degrees) |
|---|---|---|---|
| 1-3 | 118-135 | 8-12 | 30-35 |
| 3-6 | 118-130 | 10-15 | 25-30 |
| 6-10 | 118-125 | 12-18 | 20-25 |
4. Step-by-step polishing guide
1.Preparation: Clean the aluminum chips on the surface of the drill bit and use industrial alcohol to remove oil stains. Check the drill bit for wear and identify areas that need grinding.
2.Coarse grinding stage: Use an 80-120 mesh grinding wheel to dress the main cutting edge, keeping the drill bit axis at a 59° angle with the grinding wheel. Pay attention to grinding in small amounts in batches to avoid overheating.
3.Fine grinding stage: Replace with a grinding stone of 400 mesh or above and trim the chisel edge to 1/3 of the original length. Use an angle gauge to ensure that the relief angle is within the range of 8-15°.
4.Polishing: Use a wool wheel and polishing paste to treat the cutting edge to improve surface finish. The final edge roughness should be controlled below Ra0.8.
5. Solutions to common problems
| Problem phenomenon | Possible reasons | Solution |
|---|---|---|
| Drilling holes with many burrs | The edge is not sharp | Re-sharpen the chisel edge |
| Drill head heats up quickly | Back corner is too big | Adjust to standard angle |
| Poor chip removal | Improper helix angle | Corrected land width |
6. Expert advice
According to popular discussions on machining forums, professional technicians recommend: ① The amount of removal per grinding should not exceed 0.1mm; ② It is recommended to check the edge status every 50-80 holes processed; ③ The edge angle parameters should be fine-tuned for different aluminum alloy grades (such as 6061/7075).
Through the above structured data and practical guide, I believe you can master the correct grinding method of aluminum drill bits. Remember to wear protective glasses during operation and regularly check the status of the tools to ensure processing quality and operational safety.
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