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Drilling and countersinking integrated dagger drill

An integrated, dagger technology, applied in drilling/drilling equipment, drill repair, drilling tool accessories, etc., can solve problems affecting product qualification rate, low work efficiency, troublesome processing, etc., achieve good edge finish, improve processing Efficiency, sharp knife effect

Inactive Publication Date: 2017-12-29
JIANGSU TIANGONG TOOLS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing route is composed of drilling, expanding, reaming, countersinking and other processes. There are many processes and the processing is troublesome. If there are splits and burrs
Any defect such as chipping will cause the entire plate to be scrapped, affecting the product qualification rate
Due to the many processes, frequent tool changes, low work efficiency and obvious shortcomings

Method used

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  • Drilling and countersinking integrated dagger drill
  • Drilling and countersinking integrated dagger drill
  • Drilling and countersinking integrated dagger drill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, according to the attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 , the present invention is a countersinking integrated dagger drill, which is characterized in that a countersinking integrated dagger drill includes a drill body 15, a drill tip 1 is provided at the front end of the drill body 15, and a drill tip 1 is arranged along the surface of the drill body 15. There is a helical cutting edge part 2, a chip flute 3, and a countersink part 4 is provided at the lower end of the drill body. Angular, the drill tip 1 includes a rake face 7, a first flank face 8, a second flank face 9, a backlash chip flute 10, a backlash entry angle 11, and a chisel edge angle 12. The chip removal The groove 3 extends helically from the drill tip to the handle portion 5 , and the countersinking portion includes a countersinking step angle and a tool undercut 6 .

Embodiment 2

[0024] Embodiment 2, in the drill and countersink integrated dagger drill described in Embodiment 1, the three-vertex shape of the drill tip 1 includes a first corner 1-1, a second corner 1-2, and a third corner The apex angle 1-3, the first apex angle 1-1 is 140°~150°, the second apex angle 1-2 is 85°~95°, and the third apex angle 1-3 is 55° ~65°.

Embodiment 3

[0025] Embodiment 3, In the integrated countersinking dagger drill described in Embodiment 1, the countersinking portion includes a rake face 14 and a flank 13, and the countersinking step angle is 16°~18°.

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Abstract

The invention discloses a drilling and countersinking integrated dagger drill comprising a drill body. A drill tip part is arranged at the front end of the drill body, a spiral cutting edge part and a chip removal groove are formed along the surface of the drill body, and a counter sinking part is arranged at the low end of the drill body and connected with a handle part. The drilling and countersinking integrated dagger drill is characterized in that the drill tip part is in a three-vertex-angle shape and comprises a front blade face, a first rear blade face, a second rear blade face, a tooth gap chip containing groove, a tooth gap cut-in angle and a chisel edge angle; the chip removal groove spirally extends from the drill tip part to the handle part; and the counter sinking part comprises a counter sinking step angle and a cutter back chipping part. According to the drilling and countersinking integrated dagger drill, the problems of material layering, burring and edge-cracking in the machining process in the prior art are solved, and machining which needs to be conducted through the multiple process steps in the prior art can be conducted at a time. Through the cutter, the surface quality and the production efficiency of a machined material are improved, and the production cost is reduced.

Description

technical field [0001] The tool of the invention belongs to the technical field of cutting tools, and in particular relates to a drill and countersink integrated dagger drill for processing carbon fiber composite materials. Background technique [0002] Carbon fiber composite material is a special fiber composite material mainly composed of carbon elements. It is a new material with excellent mechanical properties. Its specific gravity is less than 1 / 4 of steel, and its tensile strength is 7 to 9 times that of steel. Due to its With the advantages of light specific gravity, high tensile strength, high temperature resistance, and high chemical stability, carbon fiber composite materials are widely used in aerospace, sports equipment, ships, automobiles, medical equipment and other fields. [0003] Carbon fiber composite materials are mainly multi-layer composite materials composed of carbon elements, and splitting, burrs, and chipping often occur during processing. The tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/10
CPCB23B51/10B23B2226/27B23B2251/04B23B2251/18B23B2251/40
Inventor 朱小坤张卫平刘治宝王开昭王浩
Owner JIANGSU TIANGONG TOOLS CO LTD
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