CN110548902B - Mechanical clamping drill bit - Google Patents
Mechanical clamping drill bit Download PDFInfo
- Publication number
- CN110548902B CN110548902B CN201910561593.1A CN201910561593A CN110548902B CN 110548902 B CN110548902 B CN 110548902B CN 201910561593 A CN201910561593 A CN 201910561593A CN 110548902 B CN110548902 B CN 110548902B
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- CN
- China
- Prior art keywords
- cutting edge
- cutting
- blade
- main
- main cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002173 cutting fluid Substances 0.000 abstract 2
- 238000003754 machining Methods 0.000 abstract 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The application belongs to the field of machining cutting tools, and in particular relates to a mechanically clamped drill bit which comprises a cutter body and at least two triangular cutting blades arranged on the cutter body; the cutting blade is fixed in the groove of the blade body by using a fastening bolt; the cutting blade comprises a main cutting edge; the main cutting edge comprises two convex arc-shaped cutting edges arranged at the two top ends and a cutting edge line of a wavy concave-convex structure arranged between the two cutting edges. According to the application, through the design of the wavy concave-convex structure of the main cutting edge, the convex cutting edge is used for cutting, and the concave cutting edge is used for containing cutting fluid; the deep hole machining and cutting environment of the existing organic clamping drill is improved, and the chips are fragmented and smoothly removed under the combined action of the main cutting edge and the high-pressure cutting fluid.
Description
Technical Field
The invention belongs to the field of machining cutting tools, and particularly relates to a mechanically clamped drill bit.
Background
The conventional machine clamping drill is also called a power drill or a U drill, and when a large-diameter aperture is drilled, the machine tool is difficult to cut metal due to insufficient rigidity, excessive cutting force and the like.
Disclosure of Invention
The invention aims to provide a mechanical clamping drill bit.
The invention adopts the following technical scheme to realize the aim:
A mechanical clamping drill bit comprises a cutter body and at least two triangular cutting blades arranged on the cutter body; the cutting blade is fixed in the groove of the blade body by using a fastening bolt; the cutting blade comprises a main cutting edge; the main cutting edge comprises two convex arc-shaped cutting edges arranged at the two top ends and a cutting edge line of a wavy concave-convex structure arranged between the two cutting edges.
The number of the cutting blades is two, namely a left blade and a right blade; the center of the cutting edge of the left blade, which is coincident with the axis of the cutter body, is a left top tangent point, and the center of the cutting edge of the right blade, which is close to the axis of the cutter body, is a right top tangent point; the distance between the left top tangent point and the right top tangent point is 3R, wherein R is the radius of the cutting edge.
The longitudinal distance between the left blade and the right blade is A, and the transverse distance is L, so that A 2+L2=（3R）2 is satisfied. The included angle between the main cutting edge of the left blade and the main cutting edge of the right blade is theta, and theta is more than or equal to 150 degrees and less than or equal to 200 degrees.
The phase difference between the working curve of the main cutting edge of the left blade and the working curve of the main cutting edge of the right blade is pi/2.
Compared with the prior art, the invention has the beneficial effects that:
According to the application, through the design of the wavy concave-convex structure of the main cutting edge, the convex cutting edge is used for cutting, and the concave cutting edge is used for containing cutting fluid; the deep hole machining and cutting environment of the existing organic clamping drill is improved, and the chips are fragmented and smoothly removed under the combined action of the main cutting edge and the high-pressure cutting fluid; the drill bit with the same diameter can be manufactured to be smaller in the main body chip containing space and larger in the drill core, so that the rigidity of the cutter is effectively enhanced; the roundness error of the hole during drilling can be reduced by designing the included angle between the main cutting edge of the left blade and the main cutting edge of the right blade; when the drill bit works, the working of the left blade forms wavy concave-convex points, and the right blade just forms complementary concave-convex points of the left blade, so that the whole cutting is completed. The contact length of the main cutting edge of the drill bit and the workpiece is obviously shortened, the main cutting force is reduced, and the energy consumption of a machine tool is reduced; the range of the drillable aperture of the machine tool of the same type is larger.
Drawings
FIG. 1 is a schematic view of the overall structure of a machine-clamped drill bit of the present invention;
FIG. 2 is a schematic view of the right blade of the present invention;
Fig. 3 is a schematic diagram of a mechanically clamped drill bit of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, so that those skilled in the art can better understand the technical solutions of the present invention.
Figures 1-3 show a machine-clamped drill bit comprising a cutter body 1 and at least two triangular cutting blades 2 arranged on the cutter body; the cutting blade is fixed in the groove of the cutter body by using a fastening bolt 31; the cutting blade comprises a main cutting edge; the main cutting edge comprises two convex arc-shaped cutting edges 26 arranged at the two top ends and a cutting edge line of a wavy concave-convex structure arranged between the two cutting edges, and the cutting edge line comprises a convex part 22 and a concave part 23.
The number of the cutting blades is two, namely a left blade 41 and a right blade 42; the center of the cutting edge of the left blade, which coincides with the axis of the cutter body, is a left top tangent point 411, and the center of the cutting edge of the right blade, which is close to the axis 40 of the cutter body, is a right top tangent point 422; the distance between the left top tangent point and the right top tangent point is 3R, wherein R is the radius of the cutting edge.
The longitudinal distance L between the left blade and the right blade is A, and A 2+L2=（3R）2 is satisfied. The included angle between the main cutting edge 412 of the left blade and the main cutting edge 421 of the right blade is theta, and theta is more than or equal to 150 degrees and less than or equal to 200 degrees.
The working curve 413 of the main cutting edge of the left blade and the working curve 423 of the main cutting edge of the right blade have a phase difference of pi/2.
According to the application, through the design of the wavy concave-convex structure of the main cutting edge, the convex cutting edge is used for cutting, and the concave cutting edge is used for containing cutting fluid; the deep hole machining and cutting environment of the existing organic clamping drill is improved, and the chips are fragmented and smoothly removed under the combined action of the main cutting edge and the high-pressure cutting fluid; the drill bit with the same diameter can be manufactured to be smaller in the main body chip containing space and larger in the drill core, so that the rigidity of the cutter is effectively enhanced; the roundness error of the hole during drilling can be reduced by designing the included angle between the main cutting edge of the left blade and the main cutting edge of the right blade; when the drill bit works, the working of the left blade forms wavy concave-convex points, and the right blade just forms complementary concave-convex points of the left blade, so that the whole cutting is completed. The contact length of the main cutting edge of the drill bit and the workpiece is obviously shortened, the main cutting force is reduced, and the energy consumption of a machine tool is reduced; the range of the drillable aperture of the machine tool of the same type is larger.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (1)
1. The machine clamping drill bit is characterized by comprising a cutter body and at least two triangular cutting blades arranged on the cutter body; the cutting blade is fixed in the groove of the blade body by using a fastening bolt; the cutting blade comprises a main cutting edge; the main cutting edge comprises two convex arc-shaped cutting edges arranged at the two top ends and a cutting edge line of a wavy concave-convex structure arranged between the two cutting edges;
The number of the cutting blades is two, namely a left blade and a right blade; the center of the cutting edge of the left blade, which is coincident with the axis of the cutter body, is a left top tangent point, and the center of the cutting edge of the right blade, which is close to the axis of the cutter body, is a right top tangent point; the distance between the left top tangent point and the right top tangent point is 3R, wherein R is the radius of the cutting edge;
The included angle between the main cutting edge of the left blade and the main cutting edge of the right blade is theta, and theta is more than or equal to 150 degrees and less than or equal to 200 degrees;
the phase difference between the working curve of the main cutting edge of the left blade and the working curve of the main cutting edge of the right blade is pi/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561593.1A CN110548902B (en) | 2019-06-26 | 2019-06-26 | Mechanical clamping drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561593.1A CN110548902B (en) | 2019-06-26 | 2019-06-26 | Mechanical clamping drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548902A CN110548902A (en) | 2019-12-10 |
| CN110548902B true CN110548902B (en) | 2024-06-14 |
Family
ID=68735425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910561593.1A Active CN110548902B (en) | 2019-06-26 | 2019-06-26 | Mechanical clamping drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110548902B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296404A (en) * | 2020-11-12 | 2021-02-02 | 承德石油高等专科学校 | Modular drill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2113846U (en) * | 1991-07-30 | 1992-08-26 | 西安石油学院 | Carbide-tipped rotary index drilling and counterboring tool |
| CN105983717A (en) * | 2014-12-23 | 2016-10-05 | 张新添 | Disposable drilling and milling cutter |
| CN210731117U (en) * | 2019-06-26 | 2020-06-12 | 承德石油高等专科学校 | Machine clamp drill bit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3850000B2 (en) * | 1997-12-12 | 2006-11-22 | 株式会社タンガロイ | Drill |
| WO2004024381A2 (en) * | 2002-09-09 | 2004-03-25 | Komet Group Holding Gmbh | Drilling tool with alternating cutting plates and alternating cutting plates for said drilling tool |
| DE102006044605A1 (en) * | 2006-09-19 | 2008-03-27 | Komet Group Holding Gmbh | Indexable insert and use of the indexable insert in a solid drill |
| CN104066920A (en) * | 2012-01-30 | 2014-09-24 | 山特维克知识产权股份有限公司 | Drill bit |
| CN103658771B (en) * | 2013-11-29 | 2016-02-24 | 河南省蓝剑工具科技有限公司 | Machine holding carbide alloy treapanning drill |
| TWI508804B (en) * | 2014-12-23 | 2015-11-21 | Hsin Tien Chang | Screw feed cutter |
| CN106862618B (en) * | 2016-12-30 | 2019-12-13 | 株洲钻石切削刀具股份有限公司 | Drilling machining tool |
-
2019
- 2019-06-26 CN CN201910561593.1A patent/CN110548902B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2113846U (en) * | 1991-07-30 | 1992-08-26 | 西安石油学院 | Carbide-tipped rotary index drilling and counterboring tool |
| CN105983717A (en) * | 2014-12-23 | 2016-10-05 | 张新添 | Disposable drilling and milling cutter |
| CN210731117U (en) * | 2019-06-26 | 2020-06-12 | 承德石油高等专科学校 | Machine clamp drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110548902A (en) | 2019-12-10 |
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| GR01 | Patent grant |