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High Strength Straight Shank Twist Drill

A twist drill and high-strength technology, applied in the field of cutting tools, can solve the problems of reduced tool life, accelerated component wear, and easy fracture, and achieve the effect of improving production efficiency and service life

Inactive Publication Date: 2011-12-28
江苏万金工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The core thickness of the existing straight shank twist drill is too large, but the core thickness increment is too small, resulting in a lot of materials for processing the twist drill, and the strength of the twist drill cannot be effectively guaranteed in the workpiece, and it is prone to breakage after a period of use; At the same time, the chips produced by the existing tools during the machining process are difficult to be effectively removed. The existence of chips accelerates the wear of various components, which greatly reduces the service life of the tools and reduces the surface quality of the workpiece.

Method used

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  • High Strength Straight Shank Twist Drill
  • High Strength Straight Shank Twist Drill
  • High Strength Straight Shank Twist Drill

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Embodiment Construction

[0013] The present invention includes a shank 2 and a blade 1, the core thickness 3 of the blade 1 is 50% smaller than that of the standard drill bit, and the core thickness increment is twice as large as that of the standard drill bit.

[0014] The chip flute of the cutting edge 1 of the present invention includes a chip inlet 4 with a large R at the front and a chip breaker 5 with a small R at the rear. The chip-feeding groove 4 of the present invention has fast chip removal and quickly takes away the cutting heat, and the rear chip-breaking groove 5 enhances the cutting ability, and the iron chips are smoothly discharged from the groove.

[0015] The fan-shaped plate 7 of the present invention is made up of large and small double R and angle lines. Install two fan-shaped plates 7 designed according to high-strength straight-shank twist drills and two back plates 6 on the head frame of the four-roll rolling mill. The four plates form a certain angle with each other, and the ...

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Abstract

The invention relates to a high-strength straight-shank twist drill. Including the shank and the blade, the core thickness of the blade is 50% smaller than that of the standard drill, and the core thickness increment is twice as large as that of the standard drill. The invention adopts the product structure of optimized drill edge and cutting shape, unique processing method, so that the product has a small thickness, a large center thickness increment, and a unique cutting groove type, so that chips are easily discharged; the invention saves 20% of materials More than 50% of the auxiliary materials, the production efficiency is increased by more than 50%, and the service life is increased by more than 1.5 times.

Description

technical field [0001] The invention relates to a high-strength straight-shank twist drill, which belongs to the technical field of cutting tools. Background technique [0002] The core thickness of the existing straight shank twist drill is too large, but the core thickness increment is too small, resulting in a lot of materials for processing the twist drill, and the strength of the twist drill cannot be effectively guaranteed in the workpiece, and it is prone to breakage after a period of use; At the same time, it is difficult to effectively remove the chips produced by the existing cutting tools during the machining process. The existence of chips accelerates the wear of various components, which greatly reduces the service life of the cutting tools and the surface quality of the workpiece. Contents of the invention [0003] The purpose of the present invention is to provide a straight shank twist drill with less material and high strength in view of the above defects....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/02
Inventor 薛万金
Owner 江苏万金工具有限公司
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