CN114147260A - Alloy drill bit - Google Patents
Alloy drill bit Download PDFInfo
- Publication number
- CN114147260A CN114147260A CN202111499286.9A CN202111499286A CN114147260A CN 114147260 A CN114147260 A CN 114147260A CN 202111499286 A CN202111499286 A CN 202111499286A CN 114147260 A CN114147260 A CN 114147260A
- Authority
- CN
- China
- Prior art keywords
- height
- cutting
- alloy
- cutting edge
- bit
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 34
- 230000007704 transition Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/34—Arrangements for removing chips out of the holes made; Chip- breaking arrangements attached to the tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses an alloy drill bit, which comprises a drill rod and a tool bit; a spiral chip groove is formed in the drill rod; the straight chip groove is formed in the tool bit; the front ends of the cutter heads are provided with a plurality of cutting edges; the straight chip grooves are arranged between the cutting edges; the cutting edge comprises a main cutting edge and an auxiliary cutting edge; the cutting edge comprises a cutting part, a positioning part and a transition part; the cutting edge is converged to the positioning part towards the center; the positioning part is a round corner R1Setting the thickness to be 0.5mm-1.5 mm; the transition part of the main blade is a round angle R2Setting the thickness to be 5.5mm-7.5 mm; the transition part of the auxiliary cutting edge is a round angle R3Setting the thickness to be 4.0mm-6.0 mm; the height h of the transition part and the positioning part31.0mm-2.5 mm; the height h from the rear end of the cutting part of the main blade to the rear end of the cutter head1A height h from the rear end of the cutting portion of the minor blade to the rear end of the tool bit2The height is 0.5mm-1.0 mm; the height h of the cutter head is greater than the height h1Height of 2mm-4mm. The method that the cutting edges are converged in the positioning part towards the center ensures accurate positioning and improves the processing quality and the processing efficiency.
Description
Technical Field
The invention relates to the field of hardware tools, in particular to an alloy drill bit.
Background
The existing alloy drill bit mainly comprises a drill rod and an alloy cutter head, and in order to improve the cutting performance and prolong the service life of the drill bit, the alloy cutter head needs to be welded at the end part of the drill rod, so that when the drill bit works, the alloy cutter head can rapidly cut on a working surface. In the prior art, the positioning is inaccurate when in use, and the cutting effect is poor.
For example, chinese patent document discloses "an alloy drill capable of discharging chips quickly", which is published under the publication number CN 206981824U. The patent relates to an alloy drill bit capable of rapidly removing chips, which is characterized in that the top end part of a drill rod is provided with fixed clamping grooves with the number equal to that of cutting edges of an alloy cutter head, and the cutting edges of the alloy cutter head are respectively arranged in the fixed clamping grooves and welded into a whole; and discharge grooves parallel to the axis of the drill rod are respectively arranged among the plurality of fixed clamping grooves at the end part of the drill rod and are communicated with the spiral chip discharge grooves. In this patent, the drill bit is the pointed end, beats easily during the use, is unfavorable for the location, and uses the back for a long time, and most advanced wearing and tearing, positioning effect are worse.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for converging the cutting edge to the positioning part towards the center, so that the positioning is accurate, and the processing quality and the processing efficiency are improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an alloy drill bit comprises a drill rod and a cutter head fixedly connected to the top end of the drill rod; a spiral chip groove is formed in the drill rod; the cutter head is provided with a straight chip groove communicated with the spiral chip groove; the front ends of the cutter heads are provided with a plurality of cutting edges; the straight chip grooves are arranged between the cutting edges; the cutting edges comprise main cutting edges and auxiliary cutting edges arranged at intervals with the main cutting edges; the cutting edge comprises a cutting part, a positioning part and a transition part, wherein the cutting part is obliquely arranged towards the front end, the positioning part is arranged in the center of the front end of the cutter head, and the transition part is arranged between the cutting part and the positioning part; the cutting edge is converged to the positioning part towards the center; the positioning part is a round corner R1Setting the thickness to be 0.5mm-1.5 mm; the transition part of the main blade is a round angle R2Setting the thickness to be 5.5mm-7.5 mm; the transition part of the auxiliary cutting edge is a round angle R3Setting the thickness to be 4.0mm-6.0 mm; the height h of the transition part and the positioning part31.0mm-2.5 mm; the rear end of the cutting part of the main blade reaches the knifeHeight h of head rear end1A height h from the rear end of the cutting portion of the minor blade to the rear end of the tool bit2The height is 0.5mm-1.0 mm; the height h of the cutter head is greater than the height h1The height is 2mm-4 mm. The cutting edge is converged to the positioning part towards the center, the positioning part is arranged in a round head shape, the cutting part is arranged in an oblique cutting mode and is connected with the positioning part through the transition part, the positioning part is arranged in a round head shape, the center is obviously protruded to be pointed, different circular arc transition is adopted, the head part of the cutter head can be implanted into a matrix inside the object to be drilled under the pulse hammering force of the electric hammer, the head part of the drill bit can enter the object to be drilled in a straight line and does not jump in the radial direction, the drill bit has a good positioning function during drilling, vibration is obviously small during drilling, and cutting is carried out through the cutting part, so that the cutting effect is good; the above height h1Height h of2The height is 0.5mm-1.0mm, the main blade firstly cuts and then the auxiliary blade cuts, the cutting effect is good, the efficiency is high, the main blade can quickly cut and drill holes, the auxiliary blade can shape and repair the drilled holes, and the drilling precision is high.
Furthermore, four cutting edges are arranged; the included angle alpha between the cutting parts of the main blades is 140-144 degrees; the included angle beta between the cutting parts of the auxiliary blades is 148-152 degrees; the included angle between the main cutting edge and the longitudinal middle section of the main cutting edge is alpha135 ° and α245 degrees; the included angle between the auxiliary cutting edge and the longitudinal middle section of the auxiliary cutting edge is beta135 ° and β255 deg. is equal to. Reasonable structure and convenient and fast cutting.
Further, the included angle α is 144 °; the included angle beta is 152 deg.. Reasonable structure and long service life.
Further, the round angle R1Is 1.5 mm; the fillet R2Is 7.5 mm; the fillet R3Is 6.0 mm; said height h3Is 2.5 mm. The structure is reasonable.
Further, the height h1Is greater than the height h2Height 1.0 mm; said height h being greater than said height h1Height 4 mm. The structure is reasonable.
Further, the tool bit is an integral alloy tool bit. The wear resistance is greatly improved.
Further, the method can be used for preparing a novel materialThe straight chip grooves are arc R0The setting is 3.2mm-6.2 mm. Reduce the internal stress of the cutter head and prolong the service life of the alloy cutter head.
Furthermore, the round corner r of the cutting edge is set to be 0.2mm-0.4 mm. Reduce the internal stress of the cutter head and prolong the service life of the alloy cutter head.
Compared with the prior art, the invention has the advantages that: the positioning is accurate, the processing quality and the processing efficiency are improved, and the service life is long.
Drawings
FIG. 1 is a schematic structural diagram of an alloy drill bit according to the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a schematic view of the construction of the cutter head of the present invention.
Fig. 4 is a schematic view of the main cutting edge structure of the inventive tool bit.
Fig. 5 is a schematic view of the structure of the minor cutting edge of the tool bit of the present invention.
In the figure:
1. a drill stem; 2. a cutter head; 3. a spiral chip groove; 4. a straight chip groove; 5. a main blade; 6. a secondary blade; 7. a cutting portion; 8. a positioning part; 9. a transition portion.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-5, an embodiment of an alloy drill bit of the present invention is shown, wherein the alloy drill bit comprises a drill rod 1 and a cutter head 2 attached to the top end of the drill rod 1; a spiral chip groove 3 is arranged on the drill rod 1; the tool bit 2 is provided with a straight chip groove 4 communicated with the spiral chip groove 3; the front ends of the cutter heads 2 are provided with a plurality of cutting edges; the straight chip grooves 4 are arranged between the blades; the cutting edges comprise a main cutting edge 5 and an auxiliary cutting edge 6 which is arranged at a distance from the main cutting edge 5; wherein, the blade comprises a cutting part 7 which is arranged obliquely towards the front end, a positioning part 8 which is arranged at the center of the front end of the cutter head 2 and a transition part 9 which is arranged between the cutting part 7 and the positioning part 8; the blade is converged to the positioning part 8 toward the center; the positioning part 8 is a round corner R1Set to 1.5 mm; the transition part 9 of the main blade 5 is a round angle R2Set to 7.5 mm; the transition part 9 of the auxiliary blade 6 is a round angle R3Set to 6.0 mm; the height h of the transition part 9 and the positioning part 83Is 2.5 mm; the rear end of the cutting part 7 of the main blade 5 reaches the main bladeHeight h of the rear end of the cutter head 21A height h from the rear end of the cutting part 7 of the minor blade 6 to the rear end of the cutting head 22Height 1.0 mm; the height h of the cutting head 2 is greater than the height h1The height is 4 mm; the cutting edges are converged to the positioning part 8 towards the center, the positioning part 8 is arranged in a round head shape, the cutting part 7 is arranged in an oblique cutting mode and is connected with the positioning part 8 through the transition part 9, the round head of the positioning part 8 is arranged in a round head shape, the center of the positioning part is obviously protruded in a pointed shape, different circular arc transition is adopted, the head of the cutter head 2 can be implanted into a matrix inside the object to be drilled under the pulse hammering force of the electric hammer, the head of the drill bit can enter the object to be drilled in a straight line and does not jump in the radial direction, the drill bit has a good positioning function during drilling, vibration is obviously small during drilling, and cutting is carried out through the cutting part 7, so that the cutting effect is good; the above height h1Height h of2The height is 1.0mm, and the secondary blade 6 cuts after the primary blade 5 cuts earlier, and cutting effect is good, and is efficient, and primary blade 5 can the fly-cutting drilling, and secondary blade 6 can be repaiied the shape to drilling, and drilling accuracy is high.
Referring to fig. 1-5, an embodiment of an alloy drill according to the present invention is shown, in this embodiment, the basic portion is the same as the above embodiment, and is not repeated herein, and in this embodiment, four blades are provided; the included angle alpha between the cutting parts 7 of the main blade 5 is 144 degrees; the included angle beta between the cutting parts 7 of the auxiliary blade 6 is 152 degrees; the angle between the main blade 5 and the longitudinal middle section is alpha135 ° and α245 degrees; the angle between the auxiliary blade 6 and the longitudinal middle section thereof is beta135 ° and β255 °; the structure is reasonable, and the cutting is convenient and quick; meanwhile, the cutter head 2 is an integral alloy cutter head 2, so that the wear resistance is greatly improved; the straight chip grooves 4 are in the shape of circular arcs R0Set up to 6.2mm, above-mentioned cutting edge is fillet r and sets up to 0.4mm, reduces 2 internal stresses of tool bit, has improved 2 life-spans of alloy tool bit.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. An alloy drill bit comprises a drill rod and a cutter head fixedly connected to the top end of the drill rod; a spiral chip groove is formed in the drill rod; the cutter head is provided with a straight chip groove communicated with the spiral chip groove; the method is characterized in that: the front ends of the cutter heads are provided with a plurality of cutting edges; the straight chip grooves are arranged between the cutting edges; the cutting edges comprise main cutting edges and auxiliary cutting edges arranged at intervals with the main cutting edges;
the cutting edge comprises a cutting part, a positioning part and a transition part, wherein the cutting part is obliquely arranged towards the front end, the positioning part is arranged in the center of the front end of the cutter head, and the transition part is arranged between the cutting part and the positioning part; the cutting edge is converged to the positioning part towards the center; the positioning part is a round corner R1Setting the thickness to be 0.5mm-1.5 mm; the transition part of the main blade is a round angle R2Setting the thickness to be 5.5mm-7.5 mm; the transition part of the auxiliary cutting edge is a round angle R3Setting the thickness to be 4.0mm-6.0 mm; the height h of the transition part and the positioning part31.0mm-2.5 mm; the height h from the rear end of the cutting part of the main blade to the rear end of the cutter head1A height h from the rear end of the cutting portion of the minor blade to the rear end of the tool bit2The height is 0.5mm-1.0 mm; the height h of the cutter head is greater than the height h1The height is 2mm-4 mm.
2. The alloy bit of claim 1, wherein: four cutting edges are arranged; the included angle alpha between the cutting parts of the main blades is 140-144 degrees; the included angle beta between the cutting parts of the auxiliary blades is 148-152 degrees; the included angle between the main cutting edge and the longitudinal middle section of the main cutting edge is alpha135 ° and α245 degrees; the included angle between the auxiliary cutting edge and the longitudinal middle section of the auxiliary cutting edge is beta135 ° and β2＝55°。
3. The alloy bit of claim 2, wherein: the included angle alpha is 144 degrees; the included angle beta is 152 deg..
4. The alloy bit of claim 1 or 2 or 3, wherein: the fillet R1Is 1.5 mm; what is needed isThe round corner R2Is 7.5 mm; the fillet R3Is 6.0 mm; said height h3Is 2.5 mm.
5. The alloy bit of claim 1 or 2 or 3, wherein: said height h1Is greater than the height h2Height 1.0 mm; said height h being greater than said height h1Height 4 mm.
6. The alloy bit of claim 4, wherein: said height h1Is greater than the height h2Height 1.0 mm; said height h being greater than said height h1Height 4 mm.
7. The alloy bit of claim 1 or 2 or 3, wherein: the tool bit is an integral alloy tool bit.
8. The alloy bit of claim 4, wherein: the tool bit is an integral alloy tool bit.
9. The alloy bit of claim 1, wherein: the straight chip grooves are arc R0The setting is 3.2mm-6.2 mm.
10. The alloy bit of claim 1, wherein: the blade is set to be 0.2mm-0.4mm in shape of round angle r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499286.9A CN114147260A (en) | 2021-12-09 | 2021-12-09 | Alloy drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499286.9A CN114147260A (en) | 2021-12-09 | 2021-12-09 | Alloy drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114147260A true CN114147260A (en) | 2022-03-08 |
Family
ID=80453828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111499286.9A Pending CN114147260A (en) | 2021-12-09 | 2021-12-09 | Alloy drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114147260A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200784A (en) * | 1995-08-10 | 1998-12-02 | 布莱克-德克尔公司 | Cutting tool for drilling concrete, aggregate or masonry |
| DE10009732A1 (en) * | 2000-03-02 | 2001-09-06 | Hawera Probst Gmbh | Rock drill has drill head, spiral conveyor with main and subsidiary webs, conveyor edges, main and subsidiary cutter-blades. |
| CN1579686A (en) * | 2003-08-12 | 2005-02-16 | 百得有限公司 | A cutting plate for a drill bit |
| CN1707065A (en) * | 2004-06-09 | 2005-12-14 | 希尔蒂股份公司 | Drill |
| CN101181806A (en) * | 2006-11-15 | 2008-05-21 | 希尔蒂股份公司 | Drilling tool with hard material head |
| CN201712073U (en) * | 2008-12-03 | 2011-01-19 | 布莱克和戴克公司 | Cutting head and drill having the same |
| CN206981824U (en) * | 2017-07-24 | 2018-02-09 | 方大控股有限公司 | It is a kind of can quick chip removal alloy bit |
| CN108436152A (en) * | 2018-05-11 | 2018-08-24 | 方大控股有限公司 | A kind of cross alloy cutter head |
| CN209578270U (en) * | 2019-01-11 | 2019-11-05 | 方大控股有限公司 | Cross alloy blade |
| CN211304907U (en) * | 2019-11-19 | 2020-08-21 | 乐清市芙蓉工具一厂 | Drill bit |
-
2021
- 2021-12-09 CN CN202111499286.9A patent/CN114147260A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200784A (en) * | 1995-08-10 | 1998-12-02 | 布莱克-德克尔公司 | Cutting tool for drilling concrete, aggregate or masonry |
| DE10009732A1 (en) * | 2000-03-02 | 2001-09-06 | Hawera Probst Gmbh | Rock drill has drill head, spiral conveyor with main and subsidiary webs, conveyor edges, main and subsidiary cutter-blades. |
| CN1579686A (en) * | 2003-08-12 | 2005-02-16 | 百得有限公司 | A cutting plate for a drill bit |
| CN1707065A (en) * | 2004-06-09 | 2005-12-14 | 希尔蒂股份公司 | Drill |
| CN101181806A (en) * | 2006-11-15 | 2008-05-21 | 希尔蒂股份公司 | Drilling tool with hard material head |
| CN201712073U (en) * | 2008-12-03 | 2011-01-19 | 布莱克和戴克公司 | Cutting head and drill having the same |
| CN206981824U (en) * | 2017-07-24 | 2018-02-09 | 方大控股有限公司 | It is a kind of can quick chip removal alloy bit |
| CN108436152A (en) * | 2018-05-11 | 2018-08-24 | 方大控股有限公司 | A kind of cross alloy cutter head |
| CN209578270U (en) * | 2019-01-11 | 2019-11-05 | 方大控股有限公司 | Cross alloy blade |
| CN211304907U (en) * | 2019-11-19 | 2020-08-21 | 乐清市芙蓉工具一厂 | Drill bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4851512B2 (en) | Throw away drill, insert for throw away drill, and cutting method using the same | |
| CN114147260A (en) | Alloy drill bit | |
| CN211362967U (en) | Multi-edge milling cutter for glass processing | |
| CN210208794U (en) | Aluminum plate blanking cutter | |
| CN221064564U (en) | Cross alloy electric hammer drill | |
| CN215509131U (en) | Hard alloy cutter suitable for mechanical production and processing | |
| CN114226812B (en) | Self-propelled efficient drill bit structure | |
| CN208991823U (en) | Indexable depth drill | |
| CN115846730A (en) | Efficient drilling tool with strong chip removal capability | |
| CN219684059U (en) | Hard alloy steel plate drill | |
| CN210412737U (en) | High-feed multi-edge milling cutter disc | |
| CN214443144U (en) | Hole and hole bottom end face integrated processing cutter | |
| CN216656468U (en) | Stepping hole-opening drill bit | |
| CN210848486U (en) | Clamping device capable of adjusting cutting diameter of drill bit | |
| CN216938580U (en) | Hollow drilling and reaming cutter | |
| CN220278365U (en) | Asymmetric multi-blade drill bit with chisel edge | |
| CN215966503U (en) | Multi-step drilling reamer | |
| CN213614536U (en) | Accurate slitting saw of industry aluminium alloy | |
| CN218532941U (en) | Drilling and reaming combined tool | |
| CN219902778U (en) | Three-edge drill bit | |
| CN219075903U (en) | Novel removable formula face sword | |
| CN216263520U (en) | Countersunk head chamfer cutter | |
| CN216575749U (en) | Spiral cutter for machining conical hole groove | |
| CN210877730U (en) | Deep hole drill bit with reaming function | |
| CN216176927U (en) | Insert type three-point twist drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220308 |