drill

JP1798843SActive Publication Date: 2025-05-20SUMITOMO ELECTRIC HARDMETAL CORP
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Patent Information

Application Number
JP2024013874D
Authority / Receiving Office
JP · JP
Patent Type
Designs
Current Assignee / Owner
Filing Date
2024-07-04
Publication Date
2025-05-20
Estimated Expiration
2049-07-04

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Abstract

The article according to this design is a drill, which is used to cut a workpiece and perform hole drilling without using cutting oil. The article according to this design has a sub-groove that extends from the front end of the cutting edge to the middle of the longitudinal direction of the drill. The sub-groove has the function of releasing heat generated by the cutting edge during cutting.
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