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Twist drill

A twist drill and cutter head technology, applied in twist drills, conical drills, drilling tool accessories, etc., can solve problems such as affecting the processing effect of twist drills, unfavorable production, and scratching the processing holes.

Inactive Publication Date: 2015-04-22
常州华尔澜工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Today's drills are generally integrated with the cutter head and handle, and the general drills are made of high-speed steel. The production cost is high, which is not conducive to reducing production costs. The chip removal ability of the twist drill reflects the quality of the machined hole surface of the twist drill. , if the twist drill with poor chip removal effect will scratch the surface of the processed hole, affect the processing effect of the twist drill, which is not conducive to production

Method used

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  • Twist drill

Examples

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Embodiment Construction

[0012] As shown in the figure, the twist drill includes a handle 1 and a cutter head 2. The handle 1 is set above the cutter head 2 and connected to the cutter head 2. The bottom of the cutter head 2 is conical, and the angle between the two sides of the conical section is 135°, the bottom of the cone is provided with an arc-shaped groove 3 for chip removal. The arc-shaped groove 3 can accommodate small chips in the chip removal, preventing the fine chips from being discharged and affecting the quality of the processed surface. A number of spiral cutting edges 4 are provided, and a spiral chip removal groove 5 matched with the cutting edge 4 is provided between each two cutting edges 4, which is beneficial to chip removal. 9. It can cut off the spiral chips and prevent the chips from winding on the workpiece. The cutting edge and the spiral chip removal groove 5 are connected with the arc groove 3. There is a heat dissipation channel 6 on the tool handle 1 and the cutter head 2...

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Abstract

The invention relates to the technical field of tools, in particular to a twist drill. The twist drill comprises a cutter handle and a cutter head; and the cutter handle is arranged on the cutter head and is connected with the cutter head. The twist drill is characterized in that the bottom of the cutter head is in a circular conical shape, and an arc-shaped groove for containing removed chips is formed in the conical bottom; a plurality of spiral cutting blades are arranged on the cutter head, and a spiral chip removing groove matched with the spiral of the cutting blades is formed between two cutting blades; the cutting blades, the spiral chip removing groove and the arc-shaped groove are connected; heat dissipating channels are formed in the cutter handle and the cutter head; one end of each channel is arranged on the circular conical side face, and the other end of each channel is arranged on the cutter handle; the upper end of the cutter handle is sleeved with a hexagonal handle, and the upper end of the cutter handle is connected with the hexagonal handle through threads; a circular-arc groove is formed in the middle of the hexagonal handle; and the radius of the section contour line of the circular-arc groove is an inferior arc ranging from 2.28 to 2.88. The twist drill is good in machining efficiency, good in chip removal effect and low in cost and facilitates clamping.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to a twist drill. Background technique [0002] Today's drills are generally integrated with the cutter head and handle, and the general drills are made of high-speed steel. The production cost is high, which is not conducive to reducing production costs. The chip removal ability of the twist drill reflects the quality of the machined hole surface of the twist drill. , If the twist drill with poor chip removal effect will scratch the surface of the processed hole, affect the processing effect of the twist drill, which is not conducive to production. Contents of the invention [0003] In order to overcome the shortcomings of the above technical problems, the present invention provides a twist drill with good processing efficiency, good chip removal effect, good clamping and low cost. [0004] The technical scheme that solves the above-mentioned technical problem is as follow...

Claims

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Application Information

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IPC IPC(8): B23B51/02
CPCB23B51/02B23B51/0081B23B51/06B23B2251/408
Inventor 许媛
Owner 常州华尔澜工具有限公司
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