CN114226812A - Self-advancing efficient drill bit structure - Google Patents
Self-advancing efficient drill bit structure Download PDFInfo
- Publication number
- CN114226812A CN114226812A CN202111470744.6A CN202111470744A CN114226812A CN 114226812 A CN114226812 A CN 114226812A CN 202111470744 A CN202111470744 A CN 202111470744A CN 114226812 A CN114226812 A CN 114226812A
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- drill
- rod
- cutting edge
- handle
- groove
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- 238000005520 cutting process Methods 0.000 claims abstract description 100
- 230000037431 insertion Effects 0.000 claims abstract description 18
- 238000003780 insertion Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract 2
- 238000010030 laminating Methods 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention relates to a self-propelled high-efficiency drill bit structure, which comprises a drill body and a drill handle, wherein the drill body comprises a drill rod and a movable cutting edge, the center of the rear end of the drill rod is provided with an insertion rod connected with the drill handle, the front end of the drill rod is provided with a drill head part, two sides of the drill head part are provided with fixed cutting edges, one end of each fixed cutting edge is provided with a positioning notch, a first chip discharge groove is arranged between the two fixed cutting edges, the drill rod is provided with a second chip discharge groove, and one end of the second chip discharge groove is connected with the first chip discharge groove; be equipped with two constant head tanks on the drilling rod lateral wall, the inside wall of activity margin is equipped with the location sand grip along its length direction, and the location sand grip is embedded into in the constant head tank for the laminating of activity margin sets up and shifts on the drilling rod at drilling rod surface and accessible rotatory mode, and drill handle one end is supported and is leaned on the drilling rod rear end and spacing two activity margins, change the activity margin that corresponds can, need not to change the drill bit, guaranteed the normal use of drill bit, effectively reduced drill bit use cost, improve the drill bit utilization ratio.
Description
Technical Field
The invention belongs to the technical field of cutting tools, and particularly relates to a self-advancing type efficient drill bit structure.
Background
Twist drills are tools for drilling round holes in workpieces by rotary cutting relative to a fixed axis, are so called as twist because the chip flutes are helical and are the most widely used hole-machining tools. The drill bit mainly comprises a cutting part and a handle part, wherein the cutting part mainly comprises a drill tip part, a chip groove and a blade band, one side of the drill tip part is a main cutting edge, one side of the blade band is an auxiliary cutting edge, the strength of the main cutting edge of the drill tip part completely meets the normal cutting of common materials, and the auxiliary cutting edge is thin in size, so that the abrasion or fracture phenomenon of the auxiliary cutting edge is easy to occur when the drill bit cuts a hard object or the cutting direction is inclined, the drill bit is scrapped, and the use cost is increased. Therefore, the existing structure and the defects are researched and improved, and the drill bit capable of being provided with the detachable cutting edge is provided, so that the aim of achieving more practical value is fulfilled.
Disclosure of Invention
Aiming at the problems, the invention discloses a self-advancing type efficient drill bit structure, which solves the problem that the whole drill bit is scrapped due to the fact that a cutting edge of the drill bit is easy to damage in the prior art.
The specific technical scheme is as follows:
a self-propelled efficient drill bit structure comprises a drill body and a drill handle, wherein the drill handle is detachably connected with the drill body, the drill body comprises a drill rod and a movable cutting edge zone, the rear end of the drill rod is of a planar structure, an insertion rod used for being connected with the drill handle is arranged in the center of the rear end of the drill rod, a drill bit part is arranged at the front end of the drill rod, the outer diameter of the drill bit part is larger than that of the drill rod, a drill tip is arranged at the front end of the drill bit part, spiral fixed cutting edges are respectively arranged on two sides of the drill bit part, a main cutting edge is arranged on one side of each fixed cutting edge, one end of each fixed cutting edge extends to the drill tip, a positioning notch is arranged at the other end of each fixed cutting edge, a first cutting edge is arranged between the two fixed cutting edges, two spiral second cutting edges are arranged on the drill rod, and one ends of the two second cutting edges are connected with the first cutting edge; two spiral positioning grooves are formed in the side wall of the drill rod, the two positioning grooves are symmetrically arranged and located between the two second chip grooves, one end of each positioning groove extends to the corresponding positioning notch, and the other end of each positioning groove extends to the tail end of the drill rod; the number of the movable cutting edges is two, the movable cutting edges are of a spiral structure, the length of each movable cutting edge is matched with the length of the drill rod, the inner side wall of each movable cutting edge is matched with the surface of the drill rod, a positioning convex strip is arranged on the inner side wall of each movable cutting edge along the length direction of the inner side wall of each movable cutting edge, the positioning convex strips are embedded into the positioning grooves, so that the movable cutting edges are attached to the surface of the drill rod and can move on the drill rod in a rotating mode, the front ends of the two movable cutting edges abut against the positioning notches, the rear ends of the movable cutting edges are flush with the rear end of the drill rod, the two sides of the two movable cutting edges are flush with the two sides of the two second chip grooves, and one side of each movable cutting edge is provided with an auxiliary cutting edge; one end of the drill handle is abutted against the rear end of the drill rod and limits the two movable cutting edges, a tail-end chip removal groove is formed in the side wall of the drill handle, and the tail-end chip removal groove extends to one end of the drill handle and is connected with a second chip removal groove in the drill body.
Furthermore, the section of the insertion rod is of a polygonal structure, and one end of the insertion rod is connected with a screw rod; the drill handle comprises a handle body and a locking cap, wherein a through groove for containing the insertion rod is arranged in the center of the handle body in a penetrating mode, the cross section of the through groove is of a polygonal structure and is matched with the size and shape of the insertion rod, a threaded groove is formed in one end, close to the drill handle, of the locking cap, the locking cap is connected with a screw rod in a threaded mode through the threaded groove, and the drill handle is detachably connected with the drill body.
Furthermore, two threaded holes are formed in the end face, close to the locking cap, of the handle body, two mounting holes penetrate through the locking cap, the positions of the two mounting holes correspond to the positions of the two threaded holes, a positioning bolt is arranged in each mounting hole, and one end of each positioning bolt is embedded into the corresponding threaded hole and is in threaded connection with the corresponding threaded hole.
Furthermore, the mounting holes are respectively and symmetrically distributed on two sides of the thread groove.
Furthermore, the cross section of the positioning groove is of an arc-shaped structure, and arc-shaped transition arrangement is adopted between the two sides of the positioning groove and the surface of the side wall of the drill rod.
Furthermore, the depth of the tail end chip groove is gradually reduced.
The working principle is as follows: the drill body is characterized in that a detachable structure is arranged between the cutting edge zones on two sides of the drill body and the drill rod, when the movable cutting edge zone is installed, the inner wall of the drill rod at the front end of the movable cutting edge zone is attached to the surface of the drill rod, the positioning raised line is embedded into the positioning groove, the movable cutting edge zone is displaced on the drill rod in a rotating mode until the front end of the movable cutting edge zone abuts against the positioning notch, the two sides of the movable cutting edge zone are flush with the chip discharge groove, the rear end of the movable cutting edge zone is flush with the end face of the drill rod, the handle part of the drill handle is installed, the screw rod 24 at one end of the threaded groove insertion rod on the locking cap is in threaded connection, the two mounting hole positions correspond to the two threaded hole positions, one end of the positioning bolt is embedded into the threaded hole and is in threaded connection, and connection between the drill handle and the drill body and positioning are achieved
The invention has the beneficial effects that:
(1) according to the drill bit, the cutting edges on two sides of the drill body are of a detachable structure with the drill rod, the movable cutting edges are of a spiral structure, the movable cutting edges are displaced on the drill rod in a rotating mode, two sides of each movable cutting edge are flush with the chip grooves, the auxiliary cutting edges on one sides of the movable cutting edges perform drilling and cutting operations, and when the auxiliary cutting edges are damaged, the corresponding movable cutting edges can be directly replaced without replacing the drill bit, so that the normal use of the drill bit is guaranteed, the use cost of the drill bit is effectively reduced, and the utilization rate of the drill bit is improved.
(2) According to the invention, the inner wall of the movable cutting edge is positioned by matching the positioning raised line and the positioning groove, so that when the movable cutting edge rotates on the drill rod, the movable cutting edge can be ensured to be attached to the drill rod, and the dislocation phenomenon is avoided.
(3) One end of the drill stem penetrates through the handle part through the insertion rod and is detachably connected through the threaded connection of the screw rod and the threaded groove in the limiting block, so that one end of the drill stem can abut against the rear end of the drill stem and limit the two movable cutting edges, and the stability of a drill bit is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the drill body of the present invention.
Fig. 3 is a schematic structural view of the movable margin of the present invention.
Figure 4 is a cross-sectional view of a drill body according to the invention.
Fig. 5 is a schematic view of the construction of the drill shank of the present invention.
The drill comprises a drill body 1, a drill rod 2, a second chip groove 21, a positioning groove 22, an insertion rod 23, a screw 24, a drill head 3, a drill tip 31, a fixed blade band 32, a main cutting edge 33, a positioning notch 34, a first chip groove 35, a movable blade band 4, a positioning convex strip 41, an auxiliary cutting edge 42, a drill handle 5, a handle part 6, a tail end chip groove 61, a through groove 62, a screw hole groove 63, a locking cap 7, a thread groove 71, a mounting hole 72 and a positioning bolt 73.
Detailed Description
In order to make the technical scheme of the invention clearer and clearer, the invention is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixing and the arrangement of the fixing and the connection are all general connection modes in the mechanical field, and the fixing and the connection can be performed by welding, bolt and nut connection and screw connection.
In the description of the present invention, it is to be understood that the terms "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 only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-5, a self-propelled high-efficiency drill bit structure comprises a drill body 1 and a drill handle 5, the drill handle 5 is detachably connected with the drill body 1, the drill body 1 comprises a drill rod 2 and a movable cutting edge 4, the rear end of the drill rod 2 is of a plane structure, and the center of the rear end of the drill rod 2 is provided with an inserting rod 23 which is connected with the drill handle 5, the front end of the drill rod 2 is provided with a drill head part 3, the outer diameter of the drill bit part 3 is larger than that of the drill rod 2, the front end of the drill bit part 3 is provided with a drill point 31, two sides of the drill bit part 3 are respectively provided with a spiral fixed cutting edge 32, one side of each fixed blade zone 32 is provided with a main cutting edge 33, one end of each fixed blade zone 32 extends to the drill tip 31, the other end of each fixed blade zone 32 is provided with a positioning notch 34, a first chip discharge groove 35 is arranged between the two fixed blade zones 32, two spiral second chip grooves 21 are formed in the drill rod 2, and one ends of the two second chip grooves 21 are connected with the first chip grooves 35; two spiral positioning grooves 22 are formed in the side wall of the drill rod 2, the two positioning grooves 22 are symmetrically arranged and located between the two second chip grooves 21, one end of each positioning groove 22 extends to the corresponding positioning notch 34, and the other end of each positioning groove 22 extends to the tail end of the drill rod 2; the number of the movable cutting edges 4 is two, the movable cutting edges 4 are of a spiral structure, the length of each movable cutting edge 4 is matched with that of the drill rod 2, the inner side wall of each movable cutting edge 4 is matched with the surface of the drill rod 2, a positioning convex strip 41 is arranged on the inner side wall of each movable cutting edge 4 along the length direction of the inner side wall, each positioning convex strip 41 is embedded into each positioning groove 22, so that the movable cutting edges 4 are attached to the surface of the drill rod 2 and can move on the drill rod 2 in a rotating mode, the front ends of the two movable cutting edges 4 abut against the positioning notches 34, the rear ends of the movable cutting edges 4 are flush with the rear end of the drill rod 2, the two sides of the two movable cutting edges 4 are flush with the two sides of the two second chip grooves 21, and one side of each movable cutting edge 4 is provided with a secondary cutting edge 42; one end of the drill handle 5 is abutted against the rear end of the drill rod 2 and limits the two movable cutting edges 4, a tail end chip removal groove 61 is formed in the side wall of the drill handle 5, and the tail end chip removal groove 61 extends to one end of the drill handle 5 and is connected with a second chip removal groove 21 in the drill body 1.
Furthermore, the section of the insertion rod 23 is of a polygonal structure, and one end of the insertion rod 23 is connected with a screw rod 24; the drill handle 5 comprises a handle body and a locking cap 7, a through groove 62 for containing the insertion rod 23 penetrates through the center of the handle body, the cross section of the through groove 62 is of a polygonal structure and is matched with the size and shape of the insertion rod 23, a thread groove 71 is formed in one end, close to the drill handle 5, of the locking cap 7, the locking cap 7 is in threaded connection with the screw rod 24 through the thread groove 71, and detachable connection between the drill handle 5 and the drill body 1 is achieved.
Furthermore, two threaded holes are formed in the end face, close to the locking cap 7, of the handle body, two mounting holes 72 are formed in the locking cap 7 in a penetrating mode, the positions of the two mounting holes 72 correspond to the positions of the two threaded holes, a positioning bolt 73 is arranged in each mounting hole 72, and one end of each positioning bolt 73 is embedded into each threaded hole and is in threaded connection with the corresponding threaded hole.
Further, the mounting holes 72 are symmetrically distributed on two sides of the thread groove 71.
Furthermore, the cross-section of the positioning groove 22 is of an arc-shaped structure, and the two sides of the positioning groove 22 and the surface of the side wall of the drill rod 2 are in arc-shaped transition arrangement.
Further, the depth of the end chip groove 61 is gradually reduced.
The working principle is as follows: when the drill body 1 is installed, the drill rod 2 is attached to the inner wall of the front end of the movable cutting edge 4 through the surface of the drill rod 2, the positioning raised line 41 is embedded into the positioning groove 22, the movable cutting edge 4 is displaced on the drill rod 2 through a rotating mode until the front end of the movable cutting edge 4 abuts against the positioning notch 34, the two sides of the movable cutting edge 4 are flush with the chip discharge grooves, the rear end of the movable cutting edge 4 is flush with the end face of the drill rod 2, the drill handle 5 is installed on the handle portion 6, the threaded groove 71 on the locking cap 7 is used for inserting the screw rod 24 at one end of the rod 23 in threaded connection, the two installation holes 72 correspond to the two threaded hole positions, and finally one end of the positioning bolt 73 is embedded into the threaded hole and in threaded connection, so that the drill handle 5 and the drill body 1 are connected and positioned.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A self-propelled efficient drill bit structure comprises a drill body (1) and a drill handle (5), and is characterized in that the drill handle (5) is detachably connected with the drill body (1), the drill body (1) comprises a drill rod (2) and a movable cutting edge zone (4), the rear end of the drill rod (2) is of a plane structure, an insertion rod (23) used for being connected with the drill handle (5) is arranged at the center of the rear end of the drill rod (2), a drill head part (3) is arranged at the front end of the drill rod (2), the outer diameter of the drill head part (3) is larger than that of the drill rod (2), a drill tip (31) is arranged at the front end of the drill head part (3), spiral fixed cutting edge zones (32) are respectively arranged on two sides of the drill head part (3), a main cutting edge (33) is arranged on one side of each fixed cutting edge zone (32), one end of each fixed cutting edge zone (32) extends to the drill tip (31), and a positioning notch (34) is arranged at the other end of each fixed cutting edge zone, a first chip groove (35) is formed between the two fixed blade zones (32), two spiral second chip grooves (21) are formed in the drill rod (2), and one ends of the two second chip grooves (21) are connected with the first chip groove (35); two spiral positioning grooves (22) are formed in the side wall of the drill rod (2), the two positioning grooves (22) are symmetrically arranged and located between the two second chip grooves (21), one end of each positioning groove (22) extends to the corresponding positioning notch (34), and the other end of each positioning groove extends to the tail end of the drill rod (2); the number of the movable cutting edge (4) is two, the movable cutting edge (4) is in a spiral structure, the length of the movable cutting edge (4) is adapted to the length of the drill rod (2), the inner side wall of the movable cutting edge (4) is adapted to the surface of the drill rod (2), a positioning convex strip (41) is arranged on the inner side wall of the movable cutting edge (4) along the length direction, the positioning convex strip (41) is embedded into the positioning groove (22) so that the movable cutting edge (4) is attached to the surface of the drill rod (2) and can be displaced on the drill rod (2) in a rotating manner, and the front ends of the two movable blade bands (4) are abutted against the positioning notch (34), the rear ends of the movable cutting edges (4) are flush with the rear end of the drill rod (2), two sides of the two movable cutting edges (4) are flush with two sides of the two second chip grooves (21), and auxiliary cutting edges (42) are arranged on one sides of the two movable cutting edges (4); one end of the drill handle (5) is abutted against the rear end of the drill rod (2) and limits the two movable cutting edges (4), a tail-end chip removal groove (61) is formed in the side wall of the drill handle (5), and the tail-end chip removal groove (61) extends to one end of the drill handle (5) and is connected with a second chip removal groove (21) in the drill body (1).
2. The self-propelled efficient drill structure as claimed in claim 1, wherein the cross section of the insertion rod (23) is a polygonal structure, and one end of the insertion rod (23) is connected with a screw rod (24); the drill handle (5) comprises a handle body and a locking cap (7), wherein a through groove (62) used for accommodating the insertion rod (23) is formed in the center of the handle body in a penetrating mode, the cross section of the through groove (62) is of a polygonal structure and is matched with the size and shape of the insertion rod (23), a thread groove (71) is formed in one end, close to the drill handle (5), of the locking cap (7), the locking cap (7) is connected with the screw rod (24) in a threaded mode through the thread groove (71), and the drill handle (5) and the drill body (1) are detachably connected.
3. The self-propelled efficient drill structure as claimed in claim 2, wherein two threaded holes are formed in the end surface of the handle body close to the locking cap (7), two mounting holes (72) are formed in the locking cap (7) in a penetrating manner, the two mounting holes (72) correspond to the two threaded holes, a positioning bolt (73) is respectively arranged in each mounting hole (72), and one end of each positioning bolt (73) is embedded into the threaded hole and is in threaded connection with the threaded hole.
4. A self-advancing high efficiency drill bit structure as claimed in claim 3, wherein the mounting holes (72) are symmetrically distributed on both sides of the thread groove (71), respectively.
5. The self-propelled high-efficiency drill bit structure as claimed in claim 1, wherein the cross section of the positioning groove (22) is in an arc structure, and arc transition is formed between two sides of the positioning groove (22) and the surface of the side wall of the drill rod (2).
6. A self-advancing high efficiency drill bit structure as claimed in claim 1, wherein the depth of the tip flutes (61) is gradually shallower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111470744.6A CN114226812B (en) | 2021-12-03 | 2021-12-03 | Self-propelled efficient drill bit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111470744.6A CN114226812B (en) | 2021-12-03 | 2021-12-03 | Self-propelled efficient drill bit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114226812A true CN114226812A (en) | 2022-03-25 |
| CN114226812B CN114226812B (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111470744.6A Active CN114226812B (en) | 2021-12-03 | 2021-12-03 | Self-propelled efficient drill bit structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN114226812B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789272A (en) * | 2022-06-07 | 2022-07-26 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
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| CN201249283Y (en) * | 2008-07-01 | 2009-06-03 | 东莞市微创工具科技有限公司 | Novel twist drill |
| JP2009168465A (en) * | 2008-01-10 | 2009-07-30 | Toshiba Corp | Phase modulator, phase modulator assembly, and optical sensor |
| US20140212237A1 (en) * | 2013-01-28 | 2014-07-31 | Gison Machinery Co., Ltd. | Fast knockdown cutting tool assembly |
| CN207668566U (en) * | 2017-12-12 | 2018-07-31 | 珠海巧力林业机械科技有限公司 | A kind of circular cone crushing drill bit |
| CN208178519U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of three pointed drills of guiding |
| CN208178515U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of hollow workpiece guiding fluted drill |
-
2021
- 2021-12-03 CN CN202111470744.6A patent/CN114226812B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009168465A (en) * | 2008-01-10 | 2009-07-30 | Toshiba Corp | Phase modulator, phase modulator assembly, and optical sensor |
| CN201249283Y (en) * | 2008-07-01 | 2009-06-03 | 东莞市微创工具科技有限公司 | Novel twist drill |
| US20140212237A1 (en) * | 2013-01-28 | 2014-07-31 | Gison Machinery Co., Ltd. | Fast knockdown cutting tool assembly |
| CN207668566U (en) * | 2017-12-12 | 2018-07-31 | 珠海巧力林业机械科技有限公司 | A kind of circular cone crushing drill bit |
| CN208178519U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of three pointed drills of guiding |
| CN208178515U (en) * | 2018-04-10 | 2018-12-04 | 苏州富莱克精密工具有限公司 | A kind of hollow workpiece guiding fluted drill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789272A (en) * | 2022-06-07 | 2022-07-26 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
| CN114789272B (en) * | 2022-06-07 | 2023-12-22 | 株洲钻石切削刀具股份有限公司 | Drilling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114226812B (en) | 2023-01-13 |
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Effective date of registration: 20231109 Address after: 325000 Furong Town Industrial Zone, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: FANGDA HOLDING Co.,Ltd. Address before: 212000 Xinglong Village, Yaoqiao Town, New District, Zhenjiang City, Jiangsu Province Patentee before: Zhenjiang Jinye Tools Co.,Ltd. |
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