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How to use the drill bit when drilling iron plates?

1.Removethedrillbitfromthedrillchucksothatitismuchmoreconvenientwhengrinding,anditisalsothecorrectoperatingprocedure.Itisnotadvisabletogrindthedrillbitwithapistoldrill. 
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20
2019-06

What types of drills are there? What are the characteristics of different types of drill bits?

Time : 2019-06--20 Click : 18
1,twistdrill Twistdrillsarethemostwidelyusedholemachiningtools.Itmainlyconsistsoftheworkingpartofthedrillbitandtheshank.Inordertoreducethefrictionbetweentheguidingpartandtheholewallduringdrilling,thehelixangleofthetwistdrillmainlyaffectsthesizeoftherakeangleonthecuttingedge.
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20
2019-06

What are the functions of different types of taps?

Time : 2019-06--20 Click : 23
1 Screw tip tap: The cutting part is ground with a chute to form a negative edge angle (see tool). The chips are discharged forward during cutting and are suitable for tapping through holes.
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