Everyone often uses exercises, but have you fully analyzed it? What is the name of each party? What are the characteristics? What should I do if it breaks? What should I do if there are land? Now I sorted it for you, I take it ~
Complete borehole of anatomy
Diamond rhythm name
Professional name
① Spiral angle γ: Different types of angles are different, generally 10-40 °.
② Blade Band: He mainly plays the role of advice and pressures.
③ The back of the knife: in the part of the blade belt and groove, but lower than the blade band, reduced and cut force (friction).
④ The surface of the crumbs grooves: sometimes it is the surface of the front knife and the dandruff flow.
⑤ Drilling angle: the intersection of the blade belt and cut blade.
The angle of the drilling head
⑥ Main cutting blade: The angle of the two main cutting blades is the upper angle, the real cutting site.
⑦ Surface of the rear knife: Form the surface of the rear angle α.
两 Horizontal blade: connecting two cut corners, it carries 50% of the cutting force (axial).
Rear gap at the back of the knife: Reduce the friction between the exercise and the part.
Deduades of cycling: large space, which is conducive to crumbs.
Ponch Gap and Burrs?
Improve the width and height of the part by reducing the tip of the drilling tip at the tip of the drill.
Small angle of drilling 118 °
1. The radial division force, the radial stability is bad.
2. Little axial force.
3. Nonduces materials, reduce the collapse.
The larger drilling angle is 135 ° -140 °
1. Large axial separation and good radial stability.
2. Graduated feeding capacity.
3. Soft sticky materials, reduce the flying edges.
4. The roundness of the holes, the tolerance in the diameter and the rectitude are better.
Diamond set in surrounding rear angle
1. Reduce the collapse.
2. It presents the advantages of a large forest.
Diamond application problems / measures
Piping
reason:
1. The part will move downwards under the drilling act of the exercise.
2. The rigidity of the machine tool is insufficient.
3. The drilling head materials are not strong enough.
4. The drilling beat is too large.
5. Rigidity is not enough, the forest slides.
measure:
1. Reduce the cutting speed.
2. Increase the volume of food
3. Set the cooling direction (inner cold)
4. Increase a Chag
5. Check and adjust the coaxiality of the exercise.
6. Check if the post-inspection corner is reasonable.
Blade, damage
reason:
1. The installation of the borehole is caused by the impact on a cut blade.
2. The tightening rigidity of the part occurs, which occurs when the borehole is cut.
3. Excessive costs are too high.
4. Excessive cut speed.
measure:
1. Install the vibration to adapt to less than 0.02 mm, so that the two blades of the drill head are drilled under the balance.
2. Reduce the quantity of power and reduce the impact when the forest is cut.
3. If it is a conversion exercise, replace the blade material.
Coccile tumor
reason:
1. Cause by chemical reactions between cutting materials and parts (low carbon steel with a higher carbon content)
measure:
1. Improve the lubricant, increase oil or additive.
2. Improve the cutting speed and reduce the contact rate rate.
3. If you pierce aluminum, you can use the surface polishing drill without coating.
Break the knife
reason:
1. The spiral groove of the drilling head is blocked by dandruff and the cut is not discharged over time.
2. When the hole is a drilling (drilling), it does not reduce the amount of flow or mobility of mobility.
3. When drilling a soft metal like bronze, the rear corner of the drill is too large and the front area is not ground, so that the forest is automatically turned.
4. The drilling blade is too clear and the phenomenon of collapse is produced.
measure:
1. Start the replacement cycle of the tool.
2. Improve installation and fixation, such as the increase in the support area and the increase in the tightening force.
3. Check the bearing of the pin and the sliding slide.
4. Use a handle of high provision knife, such as a handful of hydraulic knife.
5. Use the material with stronger tenacity.
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