Cemented carbide drill tool is used for drilling in the solid material through holes or blind holes and reaming of the existing holes.
Cemented carbide drill processing abnormal causes and countermeasures
Situation
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Reasons
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Solution
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Drilling into the oval
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Form threaded scratches
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1.Using a suitable drill sets
2.Reduce the clearance angle 3.Check the drill bit tip angle is symmetrical with both sides length |
Produce fibrillation, vibration
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1.Reduce the clearance angle
2.Web thinning 3.Shorten cemented carbide drill length , increased drill bit rigidity 4.Check cemented carbide drill angle grinding is correct or not 5.Check the fixture cemented carbide drill contact situation 6.Pre-drilled center hole 7.Improve the rigidity of the working machine |
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The chip discharge is not easy
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1.Increase the weekly amount of feed
2.Select the correct helix angle 3.Increasing the groove width ratio 4.Intermittent feed |
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Drilling tilt
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Adverse when cutting
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1.Using the appropriate drill sets
2.Reduce the cut when the weekly amount of feed 3.Pre-drilled center hole |
Drill rigidity is bad
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Shorten cemented carbide drill length , increased drill bit rigidity
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Drill bit angle is wrong
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Resharpening cemented carbide drill
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