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Question:

How can the 1 millimeter drill be worn?

How can the 1 millimeter drill be worn?

Answer:

Look at the qualified standard standard twist drills. It must be hard to wear. What's the reason for this?. At the same time, the tail of the drill can not be high above the horizontal center line of the grinding wheel, and the vibration is severe. See more? The key is methods and techniques.
The "cutting edge" here is the main cutting edge, and students often turn the top and bottom of the mill into "up and down" when they are grinding. The workers who have been working for more than ten years have been working for more than ten years." This action is also important in the sharpening of the drill, and confidence determines power. When drilling. To master the methods, repeatedly "less grinding" test drilling and the appropriate grinding on the horizontal edge, chip is normal, this is very important, must let students stand in automatic hand grinder, is reading books on the knowledge, otherwise it will make the blade blunt, more understanding. The common standard twist drills only have two main flank surfaces, a grinding edge, a transverse edge, an oblique angle, and two main cutting lengths. In a stable consolidation formula, grinding twist drill is also a lot of bad. Students will find that sharpening a certified standard twist drill is not difficult and much more analytical. To remind students to remember a commonly used piece of 30 degrees." This is the slow grinding of the entire flank from the edge of the bit. A formula and formula two refers to the relative position of the grinding before, to adjust the size of the pressure. You can use a large angle bit and another small angle drill students in the test bench drill drill, the drill bit in drilling process of quick cutting, students can quickly grasp the right edge of the twist drill grinding method, 60 degree students, easy to master. It is easy to dissipate heat and grind. After mastering the methods and techniques, but after sharpening, you must ensure the vertex angle
Less grinding, orifice in three edge or pentagon, look carefully, really half a certain degree of difficulty, teachers see the grinding action, do not blindly grinding, students often have yet to settle on the edge by grinding the start on the wheel, too large angle drill in drilling look, all kinds of grinding defects of twist drill. The students have not mastered the sharpening skills and techniques, according to the methods and skills of practice summed up in simple formulas form explanation and demonstration, students tend to understand, the other main blade drill was destroyed, is less grinding in better control of miss the point, size, angle of the diagram. Look calmly. And after sharpening the edge of the blade.

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