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Novel numerical control twist drill

A twist drill, a new type of technology, applied in the field of drilling tools, can solve the problems of difficult sharpening and difficult chip removal of twist drills, etc., and achieve the effects of good chip removal, extended tool life, and fast drilling speed

Inactive Publication Date: 2012-11-14
方水清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the current twist drills, which are difficult to remove chips and difficult to sharpen, the present invention provides a new type of CNC twist drill

Method used

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  • Novel numerical control twist drill
  • Novel numerical control twist drill

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Embodiment Construction

[0011] A new type of numerical control twist drill, including a drill shank and a drill bit. The drill bit is composed of a cutting edge and a guiding part. The cutting edge includes a chisel edge and two main cutting edges. The guiding part includes two spiral grooves 1 and two spiral belts 2. The spiral belt 2 includes a cutting edge 3 contacting the hole wall and a cutting edge 4 slightly lower than the cutting edge 3. A number of transverse grooves are provided on the cutting edge 4 along the longitudinal direction, which can not only contain chips, but also facilitate sharpening. The width of the groove 5 extends to the center line of the drill bit; the distance between the grooves 5 is equal, and the groove 5 can be processed before the drill bit leaves the factory, which is convenient for sharpening. The beneficial effects of the invention: the cutting edge is sharper, the drilling speed is fast, the chip removal is good, and the tool life is greatly extended.

[0012] Sim...

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Abstract

The invention discloses a novel numerical control twist drill, which comprises a drill stock and a drill bit. The drill bit is composed by an edge part and a guide part, the edge part comprises a horizontal edge and two main cutting edges, and the guide part comprises two spiral grooves (1) and two spiral belts (2). Each spiral belt (2) comprises an edge belt (3) contacted with a hole wall and an edge back (4) which is slightly lower than the edge belt (3), and a plurality of horizontal grooves are arranged longitudinally on the edge back (4). The width of the grooves (5) extends to the center line of the drill bit, and gaps among the grooves (5) are the same. The novel numerical control twist drill has the advantages of being sharper in terms of edge parts, high in drilling speed and good in chip removal and greatly prolonging service lives of cutters.

Description

Technical field [0001] The invention relates to a drilling tool, in particular to a new type of numerical control twist drill. Background technique [0002] You need to choose a drill before processing the hole. Generally, the depth of the hole to be processed is first considered. The deeper the hole, the greater the amount of chips discharged during the processing. If the chips generated during the processing cannot be discharged in time and effectively, it may block the drill. Evacuate the groove, thereby delaying the processing process, and ultimately affecting the processing quality of the hole. Therefore, effective chip removal is a key factor for successfully completing the task of processing the task material. However, most standard twist drills on the market at present are difficult to remove chips, and the holes must be machined repeatedly, which shortens the life of the drill bit, reduces the processing efficiency, and seriously affects the dimensional accuracy and surf...

Claims

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Application Information

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IPC IPC(8): B23B51/02
Inventor 方水清
Owner 方水清
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