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1. Low surface roughness
Reason: 1. The cutting chips are boning together
2. Poor concentricity
3. Low cutting speed , feed volume is large or uneven.
4. The shape of the cutting is not proper.
Solution: 1. Decrease the cutting speed to avoid the broken of drill bit and improve the quality of the cutting oil and filter precision, enlarge the pressure and flow of the cutting oil.
2. Adjust the concentricity of the machine and guide bush, apply for the suitable guide bush.
3. Apply for the proper cutting oil .
2. Broken of drill bit
Reason: 1. Cutting chip’s shape is not good, which cause the chips are difficult to remove.
2. Feed volume is too large or small or uneven.
3. The wearing capacity of the drill bit is too large.
4. Cutting oil is not suitable.
Solution: 1. Change the size of the chip removing groove to avoid the too large or too small chips. When the drill bit is broken, replace the drill bit in time. Increase the pressure and flow of the cutting oil and also apply for the good material.
2. Use the proper cutting oil
3. Replace the drill bit in a certain period to avoid the too much wearing capacity.
4. Apply for the suitable cutting oil and improve the filter condition.
If any more question, please feel free to contact us.
