Chamfering angle-carried spring hole bottoming drill
A technology of spring hole and flat bottom drilling, which is applied in the direction of drilling/drilling equipment, drill repairing, drilling tool accessories, etc. It can solve the problems of large workpiece shaking and easy jamming of drill bits, and achieve low cost, less shaking, and easy restructuring. Effect
Inactive Publication Date: 2017-05-24
NINGBO LONGYUAN PRECISION MACHINERY
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AI Technical Summary
Problems solved by technology
During processing, the workpiece shakes a lot, and if it is too large, it is easy to get stuck in the drill bit
Method used
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Embodiment
[0015] The present invention grinds the sharp corners of the two blades 3 of the flat-bottomed drill into a 45° chamfer 4, and the two chamfers 4 have a certain guiding effect, which can significantly reduce the shaking when drilling the flat-bottomed hole, and the processing is safer. The processing is convenient, the cost is low, and it is easy to reform.
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The invention relates to a chamfering angle-carried spring hole bottoming drill. The chamfering angle-carried spring hole bottoming drill comprises a cylinder cutter rod and edges; the left end of the cylinder cutter rod is connected with a cutter bit; the cutter bit consists of two spiral edges; and chamfering angles are arranged at the head parts of the edges. Sharp angles of two edges of the bottoming drill are grinded into the chamfering angles of 45 degrees; and the two chamfering angles achieve a certain guide effect, so that the shaking in drilling of bottoming holes can be obviously reduced, the machining is safer and convenient, the cost is low, and the restructuring is easy.
Description
technical field [0001] The invention relates to the field of machining tools, in particular to a flat-bottom drill with a chamfered spring hole. Background technique [0002] When processing holes such as spring holes, a flat-bottom drill is used. Since the two knives of the flat-bottom drill are 180°, two sharp corners will be formed on both sides of the drill. During processing, the workpiece shakes a lot, and if it is too large, it is easy to get stuck in the drill bit. Therefore, it is necessary to optimize the flat bottom drill structure to solve the above problems. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a flat-bottom drill with a chamfered spring hole. The sharp angles of the two blades of the flat-bottom drill are ground into a 45° chamfer. The two chamfers have a certain guiding effect, which can clearly It reduces shaking when drilling flat-bottomed holes, and the processing is safer, convenie...
Claims
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IPC IPC(8): B23B51/08
CPCB23B51/08
Inventor 林国栋王璨王卫国
Owner NINGBO LONGYUAN PRECISION MACHINERY