CN112605439B - Drill bit convenient to disassemble and maintain - Google Patents
Drill bit convenient to disassemble and maintain Download PDFInfo
- Publication number
- CN112605439B CN112605439B CN202011568204.7A CN202011568204A CN112605439B CN 112605439 B CN112605439 B CN 112605439B CN 202011568204 A CN202011568204 A CN 202011568204A CN 112605439 B CN112605439 B CN 112605439B
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- drill
- tool bit
- bit
- screw
- rotation stopping
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- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims description 73
- 238000005553 drilling Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/04—Fixation screws, bolts or pins of particular form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/84—Steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/02—Connections between shanks and removable cutting heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
-
- 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
- B23B2251/20—Number of cutting edges
- B23B2251/202—Three cutting edges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a drill bit convenient to disassemble and maintain, which comprises a cutter bit, a drill rod and a screw for connecting the cutter bit and the drill rod, wherein the cutter bit comprises a cutter blade and a connecting column, the cutter blade and the connecting column are integrally formed, two groups of cutter blades are arranged, and a cutter bit chip groove is formed between the two groups of cutter blades; the drill rod comprises a drill body and a drill handle, two S-shaped drill rod chip grooves are formed in the drill body, a rotation stopping wall a and a rotation stopping wall b are arranged between the two drill rod chip grooves on the drill body, a connecting through hole is formed between the rotation stopping wall a and the rotation stopping wall b, and the connecting through hole penetrates through the drill body and the drill handle; the screw comprises a screw head and a screw rod part, wherein an external thread matched with the internal thread is arranged on the screw rod part, and the screw is locked from one end of a drill rod to one end of a tool bit. The invention has the advantages of simple structure, low processing cost, high efficiency, convenient disassembly and maintenance, high axial precision of the bit and the drill rod after clamping the drill bit and good stability.
Description
Technical Field
The invention relates to the technical field of drill bits, in particular to a drill bit convenient to detach and maintain.
Background
The modular drill is the development direction of the drill, so that the machining efficiency is improved, and the machining cost is reduced. However, how to improve the precision and stability of the cutting part and the drill rod after clamping the modular drill is a continuous improvement and improvement process. There are a number of combinations of bit and drill rod for the present drill bit. For example, the pin positioning, the screw penetrating locking, the crossed V-shaped surface positioning, the back-pull screw locking, the open pin positioning, the non-screw rotation clamping and the like are adopted. The positioning and locking modes have the characteristics of complex structure, higher production cost, poor reliability and limited application range.
Disclosure of Invention
The invention aims to provide a drill bit convenient to disassemble and maintain, which has the advantages of simple structure, low processing cost, high efficiency, fang Bie disassembly and maintenance, high axial precision of a bit head and a drill rod after clamping of the drill bit and good stability, and solves the problems raised by the technical background.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a convenient drill bit of dismantling and maintaining, includes tool bit, drilling rod and the screw of connecting tool bit and drilling rod, the tool bit includes cutting edge and spliced pole, cutting edge and spliced pole integrated into one piece, and the cutting edge is provided with two sets of, two sets of be formed with the tool bit junk slot between the cutting edge, the tool bit junk slot cuts apart the spliced pole into spliced pole a and spliced pole b, spliced pole a and spliced pole b are with the axis symmetric distribution of tool bit, be formed with connection face a on the spliced pole a, be formed with connection face b on the spliced pole b, the spliced pole is kept away from cutting edge one end face and has been seted up the connection screw, the internal thread has been seted up to the inner wall of connection screw, and the direction of the screw thread of this internal thread is opposite with the rotatory direction of tool bit; the drill rod comprises a drill body and a drill handle, two S-shaped drill rod chip grooves are formed in the drill body and are respectively butted with a tool bit chip groove, a rotation stopping wall a and a rotation stopping wall b are arranged between the two drill rod chip grooves on the drill body, a connecting through hole is formed between the rotation stopping wall a and the rotation stopping wall b, the connecting through hole penetrates through the drill body and the drill handle, the connecting through hole and the connecting screw hole are located on the same central axis, after the tool bit is mounted on the drill rod, the rotation stopping wall a and the rotation stopping wall b are respectively in tight fit connection with a connecting surface a and a connecting surface b, the rotation stopping wall a and the rotation stopping wall b are gradually thickened and gradually thickened along the circumferential direction of the drill rod, and the sections of the rotation stopping wall a and the rotation stopping wall b are in ladder shapes; the screw comprises a screw head and a screw rod part, wherein an external thread matched with the internal thread is arranged on the screw rod part, and the screw is locked from one end of a drill rod to one end of a tool bit.
Preferably, each group of cutting edges is composed of a first cutting edge, a second cutting edge and a third cutting edge, the first cutting edge, the second cutting edge and the third cutting edge are sequentially outwards distributed from the axis of the drill point, and a cutting angle is formed between every two adjacent first cutting edges and third cutting edges, and the cutting angle ranges from 30 degrees to 75 degrees.
Preferably, the dimensions of the connecting surface a and the connecting surface b are equal, and the connecting surface a and the connecting surface b are arc-shaped surfaces which are gradually bent along the radial direction of the cutter head.
Preferably, the connecting screw hole is a blind hole, and the depth value of the connecting screw hole is half of the length value of the cutter head.
Preferably, the bottom of the tool bit is a smooth inclined plane, the inclination of the inclined plane is 3-10 degrees, the connecting surface of the bottom of the drill rod and the tool bit is an inclined plane matched with each other, the tool bit is made of tungsten steel materials, and the drill rod is made of alloy steel materials.
Preferably, the drill shank is cylindrical, a convex ring is formed at the joint of the drill shank and the drill body, a sunken limit stop part is arranged on the drill shank along the length direction of the drill shank, and the sunken depth value of the limit stop part is between 0.5mm and 5 mm.
Preferably, the connecting through hole is provided with a limit step near one end of the tool bit, the limit step is in limit connection with the head of the screw, and the inner diameter of the connecting through hole is slightly larger than the inner diameter of the connecting screw hole.
Preferably, the top ends of the rotation stopping wall a and the rotation stopping wall b form a gap with the bottoms of the two groups of cutting edges, and the gap value of the gap is between 0.05mm and 0.5 mm.
Compared with the prior art, the invention has the following beneficial effects:
1. The drill bit convenient to disassemble and maintain is composed of the tool bit, the drill rod and the screw for connecting the tool bit and the drill rod, and is simple in structure, low in processing cost and high in efficiency, the connecting screw hole is formed in the tool bit, the connecting through hole is formed in the drill rod, the central axes of the connecting through hole and the connecting screw hole are the same, one end of the screw is screwed into the connecting screw hole through the connecting through hole, the inner thread direction of the connecting screw hole is opposite to the rotating direction of the drill bit, the tool bit and the drill rod are connected by the screw, the tool bit is convenient to disassemble and maintain, the connecting surface a is arranged on the connecting column a, the connecting surface b is arranged on the connecting column b, the connecting surface a and the connecting surface b are respectively in tight fit connection with the rotation stopping wall a and the rotation stopping wall b, the sizes of the connecting surface a and the connecting surface b are equal, the connecting surface a and the connecting surface b are arc surfaces, and the axial precision of the tool bit and the drill rod is higher.
2. The tool bit is provided with two groups of cutting edges, each group of cutting edges consists of the first cutting edge, the second cutting edge and the third cutting edge, and when the drill rod drives the tool bit to rotate, the first cutting edge, the second cutting edge and the third cutting edge finish cutting a product, so that the cutting effect is good.
3. According to the invention, the rotation stopping wall a and the rotation stopping wall b are gradually thickened and thickened along the circumferential direction of the drill rod, the centrifugal force of the rotation of the tool bit is increased, and the sections of the rotation stopping wall a and the rotation stopping wall b are in a trapezoid shape, so that the tool bit is more stable in the rotation process.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a block diagram of the present invention;
FIG. 3 is one of the block diagrams of the tool bit of the present invention;
FIG. 4 is a second block diagram of the tool bit of the present invention;
FIG. 5 is a cross-sectional view of a tool tip according to the present invention;
FIG. 6 is a block diagram of a drill rod of the present invention;
FIG. 7 is a top view of the drill rod of the present invention;
FIG. 8 is a partial cross-sectional view of a drill rod of the present invention;
Fig. 9 is a structural view of the screw of the present invention.
Reference numerals and names in the drawings are as follows:
1. A cutter head; 11. a blade; 111. a first cutting edge; 112. a second cutting edge; 113. a third cutting edge; 12. a connecting column; 121. a connecting column a; 122. a connecting column b; 123. a connecting surface a; 124. a connecting surface b; 13. chip grooves of the cutter head; 14. cutting corners; 15. a connecting screw hole; 16. an internal thread; 2. a drill rod; 21. drilling a drill body; 22. a drill shank; 23. drill stem junk slots; 24. a rotation stopping wall a; 25. a rotation stopping wall b; 26. a connecting through hole; 27. a limit step; 28. a convex ring; 29. a limit stop; 3. a screw; 31. a screw head; 32. a screw portion; 33. an external thread; 4. a gap.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 9, an embodiment of the present invention provides: the utility model provides a convenient drill bit of dismantling and maintaining, includes tool bit 1, drilling rod 2 and connects screw 3 of tool bit 1 and drilling rod 2, wherein tool bit 1 includes cutting edge 11 and spliced pole 12, cutting edge 11 and spliced pole 12 integrated into one piece, and cutting edge 11 is provided with two sets of, is formed with tool bit junk slot 13 between two sets of cutting edges 11, tool bit junk slot 13 cuts apart spliced pole 12 into spliced pole a121 and spliced pole b122, spliced pole a121 and spliced pole b122 are with the axis symmetry distribution of tool bit 1, be formed with connecting face a123 on spliced pole a121, be formed with connecting face b124 on spliced pole b122, connecting screw 15 has been seted up to connecting column 12 one end face that keeps away from cutting edge 11, connecting screw 15's inner wall has seted up internal thread 16, and the screw direction of this internal thread 16 is opposite with tool bit 1 rotation direction, and the purpose of design is that when tool bit 1 rotates, prevent that tool bit 1 drops and causes the incident; the drill rod 2 comprises a drill body 21 and a drill shank 22, two S-shaped drill rod chip grooves 23 are formed in the drill body 21, the two S-shaped drill rod chip grooves 23 are respectively in butt joint with the tool bit chip grooves 13, a rotation stopping wall a24 and a rotation stopping wall b25 are arranged between the two drill rod chip grooves 23 in the drill body 21, a connecting through hole 26 is formed between the rotation stopping wall a24 and the rotation stopping wall b25, the connecting through hole 26 penetrates through the drill body 21 and the drill shank 22, the connecting through hole 26 and the connecting screw hole 15 are positioned on the same central axis, after the tool bit 1 is mounted on the drill rod 2, the rotation stopping wall a24 and the rotation stopping wall b25 are respectively in tight fit with a connecting surface a123 and a connecting surface b124, the rotation stopping wall a24 and the rotation stopping wall b25 are gradually thickened along the circumferential direction of the drill rod 2, the section of the rotation stopping wall a24 and the rotation stopping wall b25 is in a ladder shape, centrifugal force for gradually increasing the rotation of the tool bit 1 from one end to the other end, and the tool bit 1 is firmly connected with the rotation stopping wall b25 in the section of the tool bit 1, and the rotation stopping wall b is more firmly connected with the tool bit 1 and the rotation stopping wall b25 when the tool bit 1 is in the section 1 and the section is more stable and firmly connected with the rotation stopping wall b1 and the rotation stopping wall b is in the rotation; the screw 3 comprises a screw head 31 and a screw rod 32, wherein the screw rod 32 is provided with an external thread 33 matched with the internal thread 16, and the screw 3 is locked from one end of the drill rod 2 to one end of the tool bit 1.
Through adopting foretell technical scheme, tool bit 1 passes through screw 3 to be connected with drilling rod 2, has made things convenient for the dismantlement maintenance of tool bit 1, and especially in the in-process that uses tool bit 1 for a long time tool bit 1 easily worn and torn, need dismantle change or maintain, the effectual processing cost that has reduced has improved the efficiency of production.
Specifically, in the present embodiment, each group of the cutting edges 11 is formed of a first cutting edge 111, a second cutting edge 112, and a third cutting edge 113, the first cutting edge 111, the second cutting edge 112, and the third cutting edge 113 are sequentially and outwardly distributed from the drill tip axis, and a cutting angle 14 is formed between two adjacent first cutting edges 111 and third cutting edges 113, and the angle of the cutting angle 14 ranges from 30 ° to 75 °.
By adopting the technical scheme, in the cutting or drilling process of the tool bit 1, the first cutting edge 111, the second cutting edge 112 and the third cutting edge 113 sequentially process the cut or drilled product, the processed chips are discharged from the tool bit chip groove 13, and the cutting angle 14 is formed between the first cutting edge 111 and the third cutting edge 113, so that the cutting or drilling effect is better than that of a traditional drill bit.
Specifically, the dimensions of the connecting surface a123 and the connecting surface b124 are equal, and the connecting surface a123 and the connecting surface b124 are both arc surfaces, and the arc surfaces are gradually curved along the radial direction of the cutter head 1.
Through adopting foretell technical scheme, all design connecting surface a123 and connecting surface b124 into the arcwall face, increased tool bit 1 and drilling rod 2's area of contact, reduced connecting surface a123 and connecting surface b124 and the frictional force between the wall a24 that splines and the wall b25 that splines for the tool bit 1 after the clamping and the axial precision of drilling rod 2 are high, and is more firm after the clamping.
Specifically, the connecting screw hole 15 is a blind hole, and the depth value of the connecting screw hole 15 is half of the length value of the cutter head 1.
Specifically, the bottom of the tool bit 1 is a smooth inclined plane, the inclination of the inclined plane is 3 ° -10 °, in this embodiment, the inclination of the inclined plane of the bottom of the tool bit 1 is 5 °, the bottom connecting surface of the drill rod 2 and the tool bit 1 is an inclined plane matched with each other, the tool bit 1 is made of tungsten steel material, and the drill rod 2 is made of alloy steel material.
Through adopting foretell technical scheme, design into smooth slope with the bottom of tool bit 1, after tool bit 1 and drilling rod 2 clamping, can effectively improve the frictional force between tool bit 1 and the drilling rod 2, further strengthened the steadiness of product, adopt tungsten steel material to make tool bit 1, drilling rod 2 adopts alloy steel material to make, can be worn and torn when tool bit 1 and the processing of being processed product contact, the tool bit 1 that adopts tungsten steel material can effectually reduce wearing and tearing, drilling rod 2 adopts alloy steel material to make can reduce cost.
Specifically, the drill shank 22 is cylindrical, a convex ring 28 is formed at the joint of the drill shank 22 and the drill body 21, a sunken limit stop portion 29 is arranged on the drill shank 22 along the length direction, and the depth value of the sunken limit stop portion 29 is between 0.5mm and 5 mm.
By adopting the above technical scheme, the drill shank 22 is mounted on the driving motor for driving the drill shank to rotate, and is limited by the limiting stop part 29, so that the mounting is simple and convenient.
Specifically, the end of the connecting through hole 26, which is close to the tool bit 1, is provided with a limiting step 27, the limiting step 27 is in limiting connection with the screw head 31, and the inner diameter of the connecting through hole 26 is slightly larger than the inner diameter of the connecting screw hole 15.
Specifically, a gap 4 is formed between the top ends of the rotation stopping wall a24 and the rotation stopping wall b25 and the bottoms of the two groups of cutting edges, and the gap value of the gap is between 0.05mm and 0.5 mm.
By adopting the technical scheme, the purpose of forming the gap 4 between the top ends of the rotation stopping wall a24 and the rotation stopping wall b25 and the bottoms of the two groups of cutting edges is to reduce the friction force between the cutter head 1 and the drill rod 2, thereby reducing the loss of the cutter head 1 and saving the cost.
Working principle: when the tool bit 1 is worn and needs to be replaced, the screw 3 is screwed out, the tool bit 1 is screwed out along the direction opposite to the rotation direction of the tool bit 1, and when the new tool bit 1 is replaced, the rotation stopping wall a and the rotation stopping wall b of the drill rod 2 are respectively in tight fit connection with the connection surface a and the connection surface b of the tool bit 1, and then are fastened through the screw 3; when the tool bit 1 is used, the tool bit 1 is driven to rotate under the action of the driving mechanism, the connecting surface a and the connecting surface b respectively contact with the rotation stopping wall a and the rotation stopping wall b in the rotation process of the tool bit 1, the tool bit 1 is prevented from falling off due to centrifugal force in the long-term rotation process, the first cutting blade 111, the second cutting blade 112 and the third cutting blade 113 on the tool bit 1 cut or drill a processed product, and scraps are discharged from the tool bit chip groove 13 and the drill stem chip groove 23.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a convenient drill bit of dismantling and maintaining, includes tool bit (1), drilling rod (2) and connects screw (3) of tool bit (1) and drilling rod (2), its characterized in that: the bottom of the tool bit (1) is a smooth inclined plane, the inclination of the inclined plane is 3-10 degrees, the connecting surfaces of the drill rod (2) and the bottom of the tool bit (1) are inclined planes which are mutually matched, the tool bit (1) comprises a tool bit (11) and a connecting column (12), the tool bit (11) and the connecting column (12) are integrally formed, two groups of tool bit chip grooves (13) are formed between the two groups of tool bit (11), each group of tool bit (11) is composed of a first cutting tool bit (111), a second cutting tool bit (112) and a third cutting tool bit (113), the first cutting tool bit (111), the second cutting tool bit (112) and the third cutting tool bit (113) are sequentially distributed outwards from the drill tip axle center, a cutting angle (14) is formed between every two adjacent first cutting tool bits (111) and the third cutting tool bit (113), the angle range of the cutting angle (14) is 30-75 degrees, the tool bit chip grooves (13) divide the connecting column (12) into the connecting column (121) and the connecting column (121 b) and the connecting column (122 b) are symmetrically distributed, the connecting column (122 a) is formed on the connecting column (121 b) and the connecting column (122 b) is formed, a connecting screw hole (15) is formed in one end face, far away from the cutting edge (11), of the connecting column (12), an internal thread (16) is formed in the inner wall of the connecting screw hole (15), and the thread direction of the internal thread (16) is opposite to the rotation direction of the cutter head (1); the drill rod (2) comprises a drill body (21) and a drill handle (22), two S-shaped drill rod chip grooves (23) are formed in the drill body (21), the two drill rod chip grooves (23) are respectively butted with a tool bit chip groove (13), a rotation stopping wall a (24) and a rotation stopping wall b (25) are arranged between the two drill rod chip grooves (23) in the drill body (21), a connecting through hole (26) is formed between the rotation stopping wall a (24) and the rotation stopping wall b (25), the connecting through hole (26) penetrates through the drill body (21) and the drill handle (22), the connecting through hole (26) and the connecting screw hole (15) are located on the same central axis, after the tool bit (1) is installed on the drill rod (2), the rotation stopping wall a (24) and the rotation stopping wall b (25) are respectively in tight fit with a connecting surface a (123) and a connecting surface b (124), the rotation stopping wall a (24) and the rotation stopping wall b (25) are gradually thickened along the circumferential direction of the drill rod (2), and the rotation stopping wall a (25) is in the shape of a section; the screw (3) comprises a screw head (31) and a screw rod portion (32), an external thread (33) matched with the internal thread (16) is arranged on the screw rod portion (32), and the screw (3) is locked from one end of the drill rod (2) to one end of the tool bit (1).
2. The easy-to-disassemble maintenance drill bit of claim 1, wherein: the connecting surface a (123) and the connecting surface b (124) are equal in size, and the connecting surface a (123) and the connecting surface b (124) are arc-shaped surfaces which are gradually bent along the radial direction of the cutter head (1).
3. The easy-to-disassemble maintenance drill bit of claim 1, wherein: the connecting screw hole (15) is a blind hole, and the depth value of the connecting screw hole (15) is half of the length value of the cutter head (1).
4. The easy-to-disassemble maintenance drill bit of claim 1, wherein: the tool bit (1) is made of tungsten steel materials, and the drill rod (2) is made of alloy steel materials.
5. The easy-to-disassemble maintenance drill bit of claim 1, wherein: the drill shank (22) is cylindrical, a convex ring (28) is formed at the joint of the drill shank (22) and the drill body (21), a sunken limit stop part (29) is arranged on the drill shank (22) along the length direction, and the sunken depth value of the limit stop part (29) is between 0.5mm and 5mm.
6. The easy-to-disassemble maintenance drill bit of claim 1, wherein: the utility model discloses a tool bit, including tool bit (1) and screw head (31), connecting through-hole (26) are provided with spacing step (27) near tool bit (1) one end, spacing step (27) are connected with screw head (31) spacing, the internal diameter of connecting through-hole (26) is slightly greater than the internal diameter of connecting screw (15).
7. The easy-to-disassemble maintenance drill bit of claim 1, wherein: and gaps (4) are formed between the top ends of the rotation stopping wall a (24) and the rotation stopping wall b (25) and the bottoms of the two groups of cutting edges, and the gap value of the gaps is between 0.05mm and 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568204.7A CN112605439B (en) | 2020-12-26 | 2020-12-26 | Drill bit convenient to disassemble and maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011568204.7A CN112605439B (en) | 2020-12-26 | 2020-12-26 | Drill bit convenient to disassemble and maintain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112605439A CN112605439A (en) | 2021-04-06 |
| CN112605439B true CN112605439B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011568204.7A Active CN112605439B (en) | 2020-12-26 | 2020-12-26 | Drill bit convenient to disassemble and maintain |
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| Country | Link |
|---|---|
| CN (1) | CN112605439B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123878B1 (en) * | 1983-04-27 | 1987-05-20 | Hermann Bilz GmbH & Co | Drill tool |
| DE19543233A1 (en) * | 1995-11-07 | 1997-05-15 | Johne & Co Praezisionswerkzeug | Drill tool with interchangeable tip |
| KR19990038033U (en) * | 1998-03-18 | 1999-10-15 | 이정수 | Insert Drill |
| CA2379637A1 (en) * | 1999-08-03 | 2001-02-08 | Kennametal Inc. | Drill bit having a replaceable cutting head |
| CA2406731A1 (en) * | 2000-02-15 | 2001-08-23 | Kennametal Inc. | Drill bit, hard member, and bit body |
| WO2008078696A1 (en) * | 2006-12-25 | 2008-07-03 | Sumitomo Electric Hardmetal Corp. | Throw-away drill and tip arrangement method for the drill |
| CN202070802U (en) * | 2011-04-25 | 2011-12-14 | 东莞市微创工具科技有限公司 | Abandoning type drill bit |
| JP2012071405A (en) * | 2010-09-29 | 2012-04-12 | Aisin Aw Co Ltd | Tap with drill |
| CN103831457A (en) * | 2012-11-27 | 2014-06-04 | 杜德文 | Automatic chip removal drill bit |
| CN110280807A (en) * | 2019-06-12 | 2019-09-27 | 东莞艾瑞克精密工具有限公司 | A kind of drill bit of replaceable cutter tip |
| CN211304907U (en) * | 2019-11-19 | 2020-08-21 | 乐清市芙蓉工具一厂 | Drill bit |
| CN214321936U (en) * | 2020-12-26 | 2021-10-01 | 东莞艾瑞克精密工具有限公司 | Drill bit convenient to disassemble and maintain |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7244081B2 (en) * | 2004-09-09 | 2007-07-17 | Ingersoll Cutting Tool Company | Drill adapter for drill having central and lateral cutting inserts |
| US8070397B2 (en) * | 2008-02-19 | 2011-12-06 | Irwin Industrial Tool Company | Self feed bit |
| US9498829B2 (en) * | 2013-03-06 | 2016-11-22 | Allied Machine & Engineering Corp. | Drilling system for deep holes |
-
2020
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123878B1 (en) * | 1983-04-27 | 1987-05-20 | Hermann Bilz GmbH & Co | Drill tool |
| DE19543233A1 (en) * | 1995-11-07 | 1997-05-15 | Johne & Co Praezisionswerkzeug | Drill tool with interchangeable tip |
| KR19990038033U (en) * | 1998-03-18 | 1999-10-15 | 이정수 | Insert Drill |
| CA2379637A1 (en) * | 1999-08-03 | 2001-02-08 | Kennametal Inc. | Drill bit having a replaceable cutting head |
| CA2406731A1 (en) * | 2000-02-15 | 2001-08-23 | Kennametal Inc. | Drill bit, hard member, and bit body |
| WO2008078696A1 (en) * | 2006-12-25 | 2008-07-03 | Sumitomo Electric Hardmetal Corp. | Throw-away drill and tip arrangement method for the drill |
| JP2012071405A (en) * | 2010-09-29 | 2012-04-12 | Aisin Aw Co Ltd | Tap with drill |
| CN202070802U (en) * | 2011-04-25 | 2011-12-14 | 东莞市微创工具科技有限公司 | Abandoning type drill bit |
| CN103831457A (en) * | 2012-11-27 | 2014-06-04 | 杜德文 | Automatic chip removal drill bit |
| CN110280807A (en) * | 2019-06-12 | 2019-09-27 | 东莞艾瑞克精密工具有限公司 | A kind of drill bit of replaceable cutter tip |
| CN211304907U (en) * | 2019-11-19 | 2020-08-21 | 乐清市芙蓉工具一厂 | Drill bit |
| CN214321936U (en) * | 2020-12-26 | 2021-10-01 | 东莞艾瑞克精密工具有限公司 | Drill bit convenient to disassemble and maintain |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112605439A (en) | 2021-04-06 |
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Effective date of registration: 20240427 Address after: 213000 Weishanhu Road, Xixiashu Town, Xinbei District, Changzhou City, Jiangsu Province Applicant after: Changzhou Kenda Tools Co.,Ltd. Country or region after: China Address before: Room 101, building 6, 10 Yanwu Zhenxing Road, Wanjiang street, Dongguan City, Guangdong Province, 523000 Applicant before: Dongguan Eric precision tools Co.,Ltd. Country or region before: China |
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