CN110732709A - Double-side limiting obliquely-penetrating locking replaceable drill point - Google Patents
Double-side limiting obliquely-penetrating locking replaceable drill point Download PDFInfo
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- CN110732709A CN110732709A CN201911099232.6A CN201911099232A CN110732709A CN 110732709 A CN110732709 A CN 110732709A CN 201911099232 A CN201911099232 A CN 201911099232A CN 110732709 A CN110732709 A CN 110732709A
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- replaceable drill
- cutting edge
- limiting
- double
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- 239000007787 solid Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/10—Fixation of cutting inserts in holders using two or more fixation screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/18—Configuration of the drill point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention relates to a double-sided limiting obliquely-penetrating locking replaceable drill point, which is characterized in that the lower part of the replaceable drill point is provided with limiting surfaces and a second limiting surface to form a dovetail structure with a narrow top and a wide bottom, the lower end of the replaceable drill point is provided with a positioning surface and a second positioning surface which are V-shaped and are matched with two bottom surfaces of a drill rod installation structure to enable the replaceable drill point and a drill rod to be coaxial with a common axis CL, a fastening through hole is arranged at a position close to the center of an entity and is orthogonal to the axis CL, a cutting edge and a second cutting edge are arranged to extend from the common axis CL to the maximum diameter positions of two sides with the uppermost end of the replaceable drill point, the left side and the right side of the replaceable drill point are provided with edges and second edges, the lower part of the replaceable drill point is provided with the V-shaped positioning surface which is matched with the V-shaped positioning structure of the drill rod to enable the drill rod to be coaxial with the common axis CL, the two limiting surfaces form a dovetail structure with the narrow top.
Description
Technical Field
The invention relates to double-sided limiting obliquely-penetrating locking replaceable drill tips, and belongs to the technical field of cutting tools.
Background
In the existing hole processing technology, the hard alloy drill bit is widely adopted by , but in the large-diameter drilling processing, the cost of the integral hard alloy drill bit is high, particularly in the high-speed and high-efficiency drilling processing, the cost of the inner-cooling integral hard alloy drill bit is higher, and the bit-changing drill becomes the inevitable technical path of low-cost processing.
For example, PCT/IL2005/000999 discloses a "cutting tool, cutting head and cutting tool assembly" which, when applied to a drilling tool, presents the problem of the shank receiving portion being too thin, and the clamping force being reduced after multiple drill tip changes, thereby leading to bit failure.
The ' drill bit with a replaceable bit type structure' disclosed in the patent No. 201510252190.0 is positioned by a pin and is fastened by a pin side face screw.
Chinese patent No. 201710517688.4 discloses a "high stability self-centering drill bit" which is mounted on a tool holder by rotational locking using a pin for positioning. The mounting mode is accurate in positioning, but the biggest problem is that the mounting part of the cutter bar is single-thin in structure, fatigue is easy to occur after multiple clamping, and the situation that the clamping force is reduced to further cause the failure of the drill bit with the replaceable drill point exists.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides double-sided limiting obliquely-penetrating locking replaceable drill tips, which can be mounted on a drill rod with the replaceable drill tips to form a double-sided limiting obliquely-pulling locking type bit-changing drill for executing drilling processing.
The purpose of the invention is realized by the following technical scheme:
the double-sided limiting obliquely-penetrating locking replaceable drill point is characterized in that the replaceable drill point is centrosymmetric in 360 degrees around an axis CL, the lower part of the replaceable drill point is provided with a sheet structure of an -th limiting surface and a second limiting surface, and the -th limiting surface and the second limiting surface form a dovetail structure with a narrow top and a wide bottom;
the lower end of the drill rod mounting structure is provided with an th positioning surface and a second positioning surface, the th positioning surface and the second positioning surface are V-shaped, and the th positioning surface and the second positioning surface which are V-shaped are matched with the two bottom surfaces of the drill rod mounting structure, so that the replaceable drill point and the drill rod are coaxial by a common axis CL;
a fastening through hole is arranged at a position close to the center of the solid body, and the fastening through hole is orthogonal to the axis CL;
the cutting edge is arranged according to the central symmetry distribution of the axis CL in 360 degrees, and is provided with th cutting edges and second cutting edges, wherein the th cutting edges and the second cutting edges extend from the central axis CL to the maximum diameter positions at two sides by the uppermost end of the replaceable drill point;
the left side and the right side are provided with th edge and a second edge, and the th edge and the second edge are portions of of an imaginary cylinder of the outermost edges of the th cutting edge and the second cutting edge, have a width and are in a spiral shape.
, the replaceable drill point is locked by the double-sided limiting inclined penetration, wherein the included angle between the -th positioning surface and the second positioning surface is 120-140 degrees.
, the replaceable drill point is locked in a double-sided limiting and obliquely penetrating mode, wherein the fastening through hole and the mounting surface or the second mounting surface form an included angle of 50-70 degrees in an inclined mode.
, the replaceable drill point is locked by double-side limit inclined penetration, wherein the cutting edge and the second cutting edge are in a straight line, a circular arc or a space curve shape adapting to the cutting action.
, the replaceable drill point is locked in a double-sided limiting and obliquely penetrating mode, wherein a spiral angle is formed between the tangent line of the outermost edge of the th edge and the tangent line of the outermost edge of the second edge and the axis CL, and the spiral angle is 15-35 degrees.
, the replaceable drill point is obliquely penetrated and locked in a double-sided limiting mode, wherein the width of the th edge and the width of the second edge are 0.05-0.1 times of the diameter of the replaceable drill point.
, the replaceable drill point is obliquely penetrated and locked in a double-side limiting mode, wherein the distance between the th edge and the second edge in the direction of the axis CL is the length of the edge, and the length of the edge is 0.3-1.0 time of the diameter of the replaceable drill point.
, the replaceable drill point is locked through the double-sided limiting inclined penetration, wherein a chip groove and a second chip groove are arranged adjacent to the cutting edge and the second cutting edge by taking the edge and the second edge as edges, and the chip groove and the second chip groove are used as a cutting edge and a second cutting edge, and naturally extend along the edge and the second edge on the replaceable drill point in a spiral mode by taking the axis CL as a reference.
Compared with the prior art, the invention has obvious advantages and beneficial effects, and is embodied in the following aspects:
① the invention has simple structure, accurate positioning, reliable fastening, V-shaped positioning surface at the lower part of the replaceable drill tip, and the V-shaped positioning surface has the same space angle with the V-shaped positioning structure of the drill rod and can be matched with the V-shaped positioning structure;
② the replaceable drill points are distributed in 360 degree central symmetry according to the axis CL, and have two limiting surfaces which form a dovetail structure with narrow top and wide bottom, when in installation, the replaceable drill points are prevented from loosening from the drill rod by the abutting of the limiting screws;
③ fastening through holes are arranged at the position of the replaceable drill point close to the center of the solid body, the replaceable drill point is stably fixed on the drill rod through fastening screws, the replaceable drill point and the drill rod are distributed in a sandwich manner and are firmly connected to form whole bodies;
④ the cutting is smooth when working according to the CCW direction, the material trade mark and the geometrical character of different replaceable drill points can be selected according to the workpiece material, the processing cost is low, the economy is good.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1: the invention can change the front view of the drill point;
FIG. 2: the invention can change the side view of the drill point;
FIG. 3: the invention can change the partial side assembly drawing of the drill point;
FIG. 4: assembly X-X cross-sectional view of the present invention;
FIG. 5: the invention can change the top view of the drill point;
FIG. 6: the invention is a partial three-dimensional assembly drawing;
FIG. 7: the invention discloses a schematic assembly relation diagram of a replaceable drill tip.
Detailed Description
The embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations and, thus, the following detailed description of the embodiments of the present invention provided in the figures is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus should not be further defined and explained in in subsequent figures if a item is defined in figures.
As shown in fig. 1, 2 and 3, the replaceable drill point is obliquely penetrated and locked in a double-sided limiting manner, the replaceable drill point is centrosymmetric in 360 degrees by an axis CL, the lower part of the replaceable drill point is provided with a sheet structure of a -th limiting surface 204A and a second limiting surface 204B, the -th limiting surface 204A and the second limiting surface 204B form a dovetail structure with a narrow top and a wide bottom, and the front side and the rear side of the sheet structure are provided with parallel -th mounting surfaces 207A or second mounting surfaces 207B;
the lower end of the drill rod mounting structure is provided with an th positioning surface 205A and a second positioning surface 205B, the th positioning surface 205A and the second positioning surface 205B are V-shaped, the included angle between the th positioning surface 205A and the second positioning surface 205B is 120-140 degrees, and the th positioning surface 205A and the second positioning surface 205B which are V-shaped are matched with the two bottom surfaces of the drill rod mounting structure, so that the replaceable drill tip 200 and the drill rod are coaxial with each other through a common axis CL.
As shown in FIGS. 1 and 4, a fastening through hole 206 is arranged at a position close to the center of the solid body, the fastening through hole 206 is orthogonal to the axis CL, the fastening through hole 206 and the installation surface 207A or the second installation surface 207B form an included angle of 50-70 degrees, the replaceable drill tip 200 is stably fixed on the drill rod 100 through a fastening screw 300, the replaceable drill tip 200 and the drill rod 100 are distributed in a sandwich mode, the connection is firm, and integral bodies are formed.
As shown in fig. 1 and 5, the central symmetry distribution of the axis CL is 360 °, th cutting edge 202A and second cutting edge 202B are provided, which play a cutting role during operation, the th cutting edge 202A and second cutting edge 202B extend from the central axis CL to the maximum diameter of both sides at the uppermost end of the replaceable drill tip 200, and the th cutting edge 202A and second cutting edge 202B are in the shape of a straight line, an arc or a space curve adapted to the cutting role;
as shown in the figures 2 and 5, th edge 201A and a second edge 201B are arranged on the left side and the right side, the th edge 201A and the second edge 201B are parts of an imaginary cylinder of the outermost edges of the th cutting edge 202A and the second cutting edge 202B, the imaginary cylinder has a width and is spiral, a spiral angle 220 is formed between the tangent line of the outermost edges of the th edge 201A and the second edge 201B and an axis CL, the spiral angle 220 is 15-35 degrees, the width of the th edge 201A and the second edge 201B is 0.05-0.1 times of the diameter of the replaceable drill tip 200, the distance between the th edge 201A and the second edge 201B in the direction of the axis CL is the edge length, and the edge length is 0.3-1.0 times of the diameter of the replaceable drill tip 200.
As shown in fig. 1, 2 and 6, adjacent to the th cutting edge 202A and the th cutting edge 202B, with the th edge 201A and the second edge 201B as edges, a th chip flute 203A and a second chip flute 203B are provided, and the th chip flute 203A and the second chip flute 203B are the th cutting edge 202A and the second cutting edge 202B which extend on the replaceable drill tip 200 in a spiral manner and along the natural extension of the th edge 201A and the second edge 201B with the axis CL as a reference.
As shown in fig. 6 and 7, the replaceable drill tip 200 is stopped by -th stop screw 400A and second stop screw 400B, -th stop screw 400A and second stop screw 400B are screwed into -th stop screw hole 104A and second stop screw hole 104B of drill rod 100, abut against -th stop surface 204A and second stop surface 204B, and the replaceable drill tip 200 is stably fixed on drill rod 100 by fastening screw 300.
The lower part of the interchangeable drill tip 200 is provided with a V-shaped positioning structure, namely an th positioning surface 205A and a second positioning surface 205B, and a th positioning surface 205A and a second positioning surface 205B are at the same spatial angle with and can be matched with the th bottom surface 110A and the second bottom surface 110B of the installation structure 102 of the drill rod 100.
In conclusion, the replaceable drill point is simple in structure, accurate in positioning and reliable in fastening, the lower portion of the replaceable drill point is provided with the V-shaped positioning surface, the V-shaped positioning surface and the V-shaped positioning structure of the drill rod are identical in spatial angle and can be matched, and after the replaceable drill point and the drill rod are installed, the replaceable drill point and the drill rod share a common axis CL, and the replaceable drill point and the drill rod are guaranteed to be coaxial with the common axis CL.
The interchangeable drill point is 360 central symmetric distributions according to axis CL, has two spacing faces, and two spacing faces form under the narrow wide forked tail structure, during the installation, prevent through stop screw rather than butt that the interchangeable drill point from the drilling rod pine and take off.
The position that is close entity central authorities of interchangeable drill point is provided with the fastening via hole, fixes interchangeable drill point on the drilling rod through fastening screw steadily, and interchangeable drill point and drilling rod are "sandwich" and distribute, firm in connection just become holistic.
The cutting is carried out according to the CCW rotating direction during the work, and the cutting is stable. In the implementation example, different material marks and geometric characteristics of the replaceable drill point can be selected according to the material of the workpiece; has the advantages of low processing cost, good economy and the like.
It should be noted that like reference numerals and letters refer to like elements in the following figures, and thus , once is defined in figures, it is not necessary to further define or interpret in the following figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as , second and the like are only used to distinguish entities or operations from another entities or operations, and no necessarily requires or implies that any such actual relationship or order exists between the entities or operations.
Claims (8)
1. The replaceable drill point is characterized in that the replaceable drill point is centrosymmetric in 360 degrees around an axis CL, the lower part of the replaceable drill point is provided with a sheet structure of -th limiting surface (204A) and a second limiting surface (204B), and the -th limiting surface (204A) and the second limiting surface (204B) form a dovetail structure with a narrow top and a wide bottom;
the lower end of the drill rod mounting structure is provided with an th positioning surface (205A) and a second positioning surface (205B), the th positioning surface (205A) and the second positioning surface (205B) are V-shaped, and the th positioning surface (205A) and the second positioning surface (205B) which are V-shaped are matched with the two bottom surfaces of the drill rod mounting structure, so that the replaceable drill tip (200) and the drill rod are coaxial with each other by a common axis CL;
a fastening through hole (206) is arranged at a position close to the center of the solid, and the fastening through hole (206) is orthogonal to the axis CL;
the cutting edge is arranged symmetrically according to the axis CL at 360 degrees, and is provided with a th cutting edge (202A) and a second cutting edge (202B), and the th cutting edge (202A) and the second cutting edge (202B) extend from the central axis CL to the maximum diameter positions at two sides by the uppermost end of the replaceable drill point (200);
the left side and the right side are provided with th edges (201A) and second edges (201B), the th edges (201A) and the second edges (201B) are parts of the outermost edge imaginary cylinder of the th cutting edge (202A) and the second cutting edge (202B), have width and are in a spiral shape.
2. The double-sided limiting obliquely-penetrating locking replaceable drill tip as claimed in claim 1, wherein the included angle between the th positioning surface (205A) and the second positioning surface (205B) is 120-140 °.
3. The double-sided limiting obliquely-penetrating locking replaceable drill tip as claimed in claim 1, wherein the fastening through hole (206) and the -th mounting surface (207A) or the second mounting surface (207B) form an included angle of 50-70 degrees.
4. The double-sided limiting miter locking replaceable drill tip of claim 1, wherein the th cutting edge (202A) and the second cutting edge (202B) are in the shape of a straight line, a circular arc, or a space curve adapted to cutting action.
5. The double-sided limiting slant-threading locking replaceable drill tip as claimed in claim 1, wherein the outermost tangent of the -th edge (201A) and the second edge (201B) forms a helix angle (220) with the axis CL, and the helix angle (220) is 15-35 °.
6. A double-sided limiting obliquely-penetrating locking replaceable drill tip according to claim 1 or 5, wherein the width of the th edge (201A) and the second edge (201B) is 0.05-0.1 times of the diameter of the replaceable drill tip (200).
7. A double-sided limiting obliquely-penetrating locking replaceable drill tip as claimed in claim 1 or 5, wherein the distance between the th edge (201A) and the second edge (201B) in the direction of the axis CL is the edge length, and the edge length is 0.3-1.0 times the diameter of the replaceable drill tip (200).
8. The double-sided limiting taper-through locking replaceable drill tip as claimed in claim 1, wherein a chip flute (203A) and a second chip flute (203B) are provided adjacent to the th cutting edge (202A) and the second cutting edge (202B) with the th edge (201A) and the second edge (201B) as edges, and the chip flute (203A) and the second chip flute (203B) are th cutting edge (202A) and second cutting edge (202B) which extend on the replaceable drill tip (200) in a spiral manner and along the natural extension of the th edge (201A) and the second edge (201B) with the axis CL as a reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099232.6A CN110732709B (en) | 2019-11-12 | 2019-11-12 | Double-sided limiting oblique-penetrating locking replaceable drill tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099232.6A CN110732709B (en) | 2019-11-12 | 2019-11-12 | Double-sided limiting oblique-penetrating locking replaceable drill tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110732709A true CN110732709A (en) | 2020-01-31 |
| CN110732709B CN110732709B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911099232.6A Active CN110732709B (en) | 2019-11-12 | 2019-11-12 | Double-sided limiting oblique-penetrating locking replaceable drill tip |
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| CN (1) | CN110732709B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889760A (en) * | 2020-08-27 | 2020-11-06 | 苏州沃钛工业技术有限公司 | Symmetrical inclined plane positioning replaceable drill tip |
| CN111889761A (en) * | 2020-08-27 | 2020-11-06 | 苏州沃钛工业技术有限公司 | Symmetrical inclined plane positioning replaceable drill rod |
| CN112846336A (en) * | 2021-02-25 | 2021-05-28 | 苏州沃钛工业技术有限公司 | V-shaped positioning single-hole limiting replaceable milling blade |
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| CN107626960A (en) * | 2017-09-08 | 2018-01-26 | 浙江欣兴工具有限公司 | The rotary cutting tool and its rotary cutting method and cutter head installation method of interchangeable bit |
| CN210877727U (en) * | 2019-11-12 | 2020-06-30 | 苏州沃钛工业技术有限公司 | Double-side limiting obliquely-penetrating locking replaceable drill point |
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- 2019-11-12 CN CN201911099232.6A patent/CN110732709B/en active Active
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| DE367010C (en) * | 1923-01-15 | Georg Samuel Dipl Ing | Twist drill with dovetail-shaped head made of high-speed steel | |
| CN1364676A (en) * | 2000-12-22 | 2002-08-21 | 韩国冶金株式会社 | Drill bit water combined integrate inserts |
| CN102015171A (en) * | 2008-04-25 | 2011-04-13 | 钴领无限公司 | Rotary-driven tool for cutting machining with a cutting body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889760A (en) * | 2020-08-27 | 2020-11-06 | 苏州沃钛工业技术有限公司 | Symmetrical inclined plane positioning replaceable drill tip |
| CN111889761A (en) * | 2020-08-27 | 2020-11-06 | 苏州沃钛工业技术有限公司 | Symmetrical inclined plane positioning replaceable drill rod |
| CN112846336A (en) * | 2021-02-25 | 2021-05-28 | 苏州沃钛工业技术有限公司 | V-shaped positioning single-hole limiting replaceable milling blade |
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| Publication number | Publication date |
|---|---|
| CN110732709B (en) | 2024-05-24 |
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