CN111975053A - High-speed steel short column drill bit - Google Patents
High-speed steel short column drill bit Download PDFInfo
- Publication number
- CN111975053A CN111975053A CN201910439491.2A CN201910439491A CN111975053A CN 111975053 A CN111975053 A CN 111975053A CN 201910439491 A CN201910439491 A CN 201910439491A CN 111975053 A CN111975053 A CN 111975053A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- chip groove
- short column
- drill
- speed steel
- 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
- 229910000997 High-speed steel Inorganic materials 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 239000000110 cooling liquid Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 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
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
-
- 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 high-speed steel short column drill bit, and particularly relates to the field of drill bits, which comprises a drill bit and a short column barrel, wherein a sealing plate is arranged in the short column barrel, a cylindrical barrel is fixedly arranged at the middle position of the other side of the sealing plate, an installation disc is sleeved on the cylindrical barrel, one end of a miniature electric telescopic rod is fixedly arranged on the sealing plate, one side of the installation disc, which is far away from the miniature electric telescopic rod, is provided with a plurality of connecting rods, one ends of the connecting rods penetrate through the side walls of the short column barrel and the drill bit and are arranged in an inner cavity of the drill bit, one end, which is positioned in the drill bit, of each connecting rod is fixedly connected with a plugging plate, one end of each plugging plate is welded with a filter sieve plate, the side wall of the outer end of the drill bit is. The drill bit can blow out chips in the chip groove, can reduce the adhesive of glue in the chip groove, and is beneficial to the heat dissipation of the drill bit.
Description
Technical Field
The invention relates to the technical field of drill bits, in particular to a high-speed steel short column drill bit.
Background
The drill is a tool for drilling through holes or blind holes in solid materials and reaming existing holes. The commonly used drill bits mainly comprise a twist drill, a flat drill, a center drill, a deep hole drill, a trepanning drill and the like. Comprises a high-speed steel drill bit, a hard alloy drill bit and a tungsten steel drill bit; cutting depth: 35MM, 50MM or 100MM; specification: 12MM to 100MM; the main material is high-speed steel; powder metallurgy; hard alloys. Suitable for electric motors: the magnetic drill/drilling machine/lathe/milling machine has complete types and specifications, and is suitable for various brands of imported magnetic drill (magnetic drill) and general drilling machines, milling machines, boring machines and the like.
If the high-speed steel drill bit is used for processing a machined object containing more glue, chips are easily accumulated in a chip removal groove of the drill bit, so that the chips can not be timely discharged, and the normal use of the drill bit is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a high-speed steel short column drill bit, wherein a mounting disc, a miniature electric telescopic rod and an air inlet pipe are arranged in a short column barrel, a connecting rod is arranged on one side of the mounting disc, and a plugging plate and a filtering sieve plate are arranged on the connecting rod.
In order to achieve the purpose, the invention provides the following technical scheme: a high-speed steel short column drill bit comprises a drill bit and a short column barrel, wherein the short column barrel and the drill bit are integrally formed, a fixed mounting hole is formed in one end, far away from the drill bit, of the short column barrel, a sealing plate is arranged inside the short column barrel, a cooling liquid cavity is formed in one side of the sealing plate, a cylindrical barrel is fixedly arranged in the middle of the other side of the sealing plate, an installation disc is sleeved on the cylindrical barrel, both ends of one side of the installation disc are fixedly connected with a telescopic end of a miniature electric telescopic rod, one end of the miniature electric telescopic rod is fixedly arranged on the sealing plate, a plurality of connecting rods are arranged on one side, far away from the miniature electric telescopic rod, of the installation disc, one ends of the connecting rods penetrate through the side walls of the short column barrel and the drill bit and are arranged in an inner cavity of the drill bit, one end of the plugging plate is welded with a filtering sieve plate, the side wall of the outer end of the drill bit is provided with a plurality of ventilation holes, one side of the outer end of the short column barrel is connected with an air inlet pipe through a rotary joint, and the other end of the air inlet pipe is communicated with a cavity in the drill bit;
The air permeable hole is arranged in the auxiliary chip groove and the cutting surface chip groove respectively, the cutting surface chip groove is communicated with the auxiliary chip groove, and the filtering hole is arranged in the alloy head chip groove.
In a preferred embodiment, the miniature electric telescopic rod is an XTL100 electric telescopic rod.
In a preferred embodiment, the connecting rods are all arranged close to the side wall of the cavity inside the drill bit, and the number of the connecting rods is the same as that of the ventilation holes in the drill bit.
In a preferred embodiment, the plugging plate and the filter sieve plate are the same in shape and size and are arranged according to the shape and size of the ventilation holes.
In a preferred embodiment, the ventilation holes are arranged obliquely upward.
In a preferred embodiment, the filter holes on the alloy head chip grooves have larger hole diameters than the filter screen plates at the positions of the cutting face chip grooves and the auxiliary chip grooves.
In a preferred embodiment, both sides of the chip flute of the cutting face and the cutting face form a top cutting edge.
In a preferred embodiment, a heat-conducting column is arranged on one side of the drill bit close to the short column casing, one end of the heat-conducting column penetrates through the sealing plate, and the heat-conducting column is arranged in the cooling liquid cavity.
The invention has the technical effects and advantages that:
1. according to the invention, the mounting disc, the miniature electric telescopic rod and the air inlet pipe are arranged in the short column barrel, the connecting rod is arranged on one side of the mounting disc, the plugging plate and the filtering sieve plate are arranged on the connecting rod, when the device is normally used, the ventilation hole in the drill bit is plugged by the plugging plate, if a processed object with a large glue content is processed, the mounting disc is driven to move by the miniature electric telescopic rod, the mounting disc drives the plugging plate and the filtering sieve plate to move through the connecting rod, so that the plugging plate and the ventilation hole are staggered, the filtering sieve plate is positioned at the ventilation hole, in the processing process, the air inlet pipe is used for blowing air to the inside of the drill bit, and the ventilation hole is used for spraying out, so that debris in the chip groove can be blown out, and the glue content can be reduced;
2. according to the invention, the heat-conducting column is arranged at one end of the drill bit, and one end of the heat-conducting column is arranged in the cooling liquid cavity, so that heat generated during the operation of the drill bit can be conveniently dissipated, and when the ventilation hole is used for blowing out the debris, the heat dissipation of the drill bit can be accelerated, the heat dissipation effect is better, and the service life of the drill bit can be effectively prolonged.
Drawings
FIG. 1 is a schematic view of the drill bit of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention.
Fig. 4 is a schematic view of the internal structure of the drill bit of the present invention.
Fig. 5 is a schematic view of the construction of the plugging plate and the filter screen plate of the present invention.
The reference signs are: the device comprises a drill bit 1, a short column barrel 2, a fixed mounting hole 3, a sealing plate 4, a cooling liquid cavity 5, a cylindrical barrel 6, a mounting disc 7, a miniature electric telescopic rod 8, a connecting rod 9, a plugging plate 10, a filtering sieve plate 11, a ventilation hole 12, an alloy head 13, an alloy head chip removal groove 14, an auxiliary chip removal groove 15, a cutting surface chip removal groove 16, a rotary joint 17, an air inlet pipe 18, a top cutting edge 19 and a heat conducting column 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The high-speed steel short column drill bit shown in figures 1-5 comprises a drill bit 1 and a short column barrel 2, wherein the short column barrel 2 and the drill bit 1 are integrally formed, a fixed mounting hole 3 is formed in one end, far away from the drill bit 1, of the short column barrel 2, a sealing plate 4 is arranged inside the short column barrel 2, a cooling liquid cavity 5 is arranged on one side of the sealing plate 4, a column barrel 6 is fixedly arranged at the middle position of the other side of the sealing plate 4, a mounting disc 7 is sleeved on the column barrel 6, the two ends of one side of the mounting disc 7 are fixedly connected with the telescopic end of a micro electric telescopic rod 8, one end of the micro electric telescopic rod 8 is fixedly arranged on the sealing plate 4, a plurality of connecting rods 9 are arranged on one side, far away from the micro electric telescopic rod 8, of each connecting rod 9 penetrates through the short column barrel 2 and the side wall of the drill, and set up in the inside cavity of drill bit 1, connecting rod 9 is located the inside one end fixedly connected with shutoff board 10 of drill bit 1, the one end welding of shutoff board 10 has filtration sieve 11, be provided with a plurality of ventilation hole 12 on the outer end lateral wall of drill bit 1, outer end one side of short column casing 2 is connected with air-supply line 18 through rotary joint 17, the other end of air-supply line 18 communicates the inside cavity of drill bit 1.
The model of the miniature electric telescopic rod 8 is an XTL100 electric telescopic rod.
The connecting rods 9 are arranged close to the side wall of the cavity inside the drill bit 1, and the number of the connecting rods 9 is the same as that of the ventilation holes 12 in the drill bit 1.
The plugging plate 10 is the same as the filtering sieve plate 11 in shape and size, and is arranged according to the shape and size of the ventilation holes 12.
The ventilation holes 12 are arranged obliquely upward.
And a heat conduction column 20 is arranged on one side of the drill bit 1 close to the short column casing 2, and one end of the heat conduction column 20 penetrates through the sealing plate 4 and is arranged in the cooling liquid cavity 5.
The implementation mode is specifically as follows: when the device is used, the short column barrel 2 is arranged on the driving mechanism through the fixed mounting hole 3, the driving mechanism is utilized to drive the short column barrel 2 and the drill bit 1 to rotate, a processed object is processed, in the processing process, heat generated on the drill bit 1 is absorbed through the heat conducting column 20, the cooling liquid cavity 5 is utilized to dissipate heat of the heat conducting column 20, if the heat generated on the drill bit 1 cannot be discharged in time or the processed object with more glue content is processed, one end of the rotary joint 17 is connected with the output end of an air blower at the outer end, the miniature electric telescopic rod 8 is opened, the miniature electric telescopic rod 8 drives the mounting disc 7 to move, the mounting disc 7 drives the plugging plate 10 and the filter sieve plate 11 to move through the connecting rod 9, so that the plugging plate 10 is staggered with the ventilation hole 12, the filter sieve plate 11 is positioned at the ventilation hole 12, the air blower blows air to a cavity inside the drill bit 1 through the rotary joint 17 and, and the dust is sprayed out through the filtering sieve plate 11 and the ventilation holes 12, so that the chips in the chip groove can be blown out, the adhesive of the glue-containing substances in the chip groove can be reduced, and the heat dissipation on the drill bit 1 can be accelerated.
According to the high-speed steel short column drill bit shown in fig. 2, an alloy head 13 used for changing a vertex angle is arranged on a cutting edge of the drill bit 1, an alloy head chip groove 14 is arranged on the cutting edge beside the alloy head 13, an auxiliary chip groove 15 is arranged in the chip groove of the drill bit 1, a cutting surface chip groove 16 is arranged on a cutting surface of the drill bit 1, the ventilation holes 12 are respectively arranged in the auxiliary chip groove 15 and the cutting surface chip groove 16, the cutting surface chip groove 16 is communicated with the auxiliary chip groove 15, and a filtering hole is arranged in the alloy head chip groove 14.
The aperture of the filtering hole on the alloy head chip groove 14 is larger than that of the filtering screen plate 11 at the positions of the cutting face chip groove 16 and the auxiliary chip groove 15.
The two sides of the chip flute 16 of the cutting face and the cutting face form a top cutting edge 19.
The implementation mode is specifically as follows: in the processing process, chips generated at the alloy head 13 are discharged to two sides through the alloy head chip groove 14 and then discharged through the auxiliary chip groove 15 and the cutting surface chip groove 16, the ventilation holes 12 are formed in the auxiliary chip groove 15 and the cutting surface chip groove 16, the ventilation holes 12 are arranged obliquely upwards, the chips in the auxiliary chip groove 15 and the cutting surface chip groove 16 can be blown upwards, the chips in the chip grooves can be blown out, and the adhesion of glue-containing substances in the chip grooves can be reduced.
The working principle of the invention is as follows: when the device is used, the short column barrel 2 is arranged on the driving mechanism through the fixed mounting hole 3, the driving mechanism is utilized to drive the short column barrel 2 and the drill bit 1 to rotate, a processed object is processed, in the processing process, heat generated on the drill bit 1 is absorbed through the heat conducting column 20, the cooling liquid cavity 5 is utilized to dissipate heat of the heat conducting column 20, if the heat generated on the drill bit 1 cannot be discharged in time or the processed object with more glue content is processed, one end of the rotary joint 17 is connected with the output end of an air blower at the outer end, the miniature electric telescopic rod 8 is opened, the miniature electric telescopic rod 8 drives the mounting disc 7 to move, the mounting disc 7 drives the plugging plate 10 and the filter sieve plate 11 to move through the connecting rod 9, so that the plugging plate 10 is staggered with the ventilation hole 12, the filter sieve plate 11 is positioned at the ventilation hole 12, the air blower blows air to a cavity inside the drill bit 1 through the rotary joint 17 and, and spout through filtering sieve 11 and ventilative hole 12, can blow off the inside piece of chip groove, can reduce the glue-containing thing adhesion in the chip groove, can accelerate the thermal effluvium on the drill bit 1 moreover, if the drill bit 1 inside contains more less piece the time through air-supply line 18 to the inside blowing of drill bit 1, blow off the piece from ventilative hole 12 and filtration hole.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A high speed steel stub drill, comprising a drill (1) and a stub barrel (2), characterized in that: the short column casing (2) and the drill bit (1) are integrally formed, a fixed mounting hole (3) is formed in one end, far away from the drill bit (1), of the short column casing (2), a sealing plate (4) is arranged inside the short column casing (2), a cooling liquid cavity (5) is formed in one side of the sealing plate (4), a column casing (6) is fixedly arranged in the middle of the other side of the sealing plate (4), a mounting disc (7) is sleeved on the column casing (6), the two ends of one side of the mounting disc (7) are fixedly connected with the telescopic end of a micro electric telescopic rod (8), one end of the micro electric telescopic rod (8) is fixedly arranged on the sealing plate (4), a plurality of connecting rods (9) are arranged on one side, far away from the micro electric telescopic rod (8), of the mounting disc (7), and one end of each connecting rod (9) penetrates through the short column casing (2) and the side wall of the drill bit (1), the air inlet pipe is arranged in an inner cavity of the drill bit (1), one end, located inside the drill bit (1), of the connecting rod (9) is fixedly connected with a plugging plate (10), one end of the plugging plate (10) is welded with a filter sieve plate (11), the outer end side wall of the drill bit (1) is provided with a plurality of air permeable holes (12), one side of the outer end of the short column barrel (2) is connected with an air inlet pipe (18) through a rotary joint (17), and the other end of the air inlet pipe (18) is communicated with the inner cavity of the drill bit (1);
Be equipped with alloy head (13) that are used for changing the apex angle on the cutting edge of drill bit (1), be equipped with alloy head chip groove (14) on the other cutting edge of alloy head (13) side, be equipped with supplementary chip groove (15) in the chip groove of drill bit (1), be equipped with cutting face chip groove (16) on the cutting face of drill bit (1), ventilative hole (12) set up respectively in supplementary chip groove (15) and cutting face chip groove (16), cutting face chip groove (16) are linked together with supplementary chip groove (15), be provided with the filtration pore in the first chip groove of alloy (14).
2. A high speed steel stub drill according to claim 1, wherein: the model of the miniature electric telescopic rod (8) is XTL100 electric telescopic rod.
3. A high speed steel stub drill according to claim 1, wherein: the connecting rods (9) are tightly attached to the side wall of the cavity inside the drill bit (1), and the number of the connecting rods (9) is the same as that of the ventilation holes (12) in the drill bit (1).
4. A high speed steel stub drill according to claim 1, wherein: the shape and the size of the plugging plate (10) and the filtering sieve plate (11) are the same, and the plugging plate and the filtering sieve plate are arranged according to the shape and the size of the ventilation holes (12).
5. A high speed steel stub drill according to claim 1, wherein: the ventilation holes (12) are obliquely and upwards arranged.
6. A high speed steel stub drill according to claim 1, wherein: the aperture of the filtering hole on the alloy head chip groove (14) is larger than that of the filtering sieve plate (11) at the positions of the cutting face chip groove (16) and the auxiliary chip groove (15).
7. A high speed steel stub drill according to claim 1, wherein: the two sides of the cutting face chip groove (16) and the cutting face form a top cutting edge (19).
8. A high speed steel stub drill according to claim 1, wherein: and a heat conduction column (20) is arranged on one side, close to the short column casing (2), of the drill bit (1), and one end of the heat conduction column (20) penetrates through the sealing plate (4) and is arranged in the cooling liquid cavity (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439491.2A CN111975053A (en) | 2019-05-24 | 2019-05-24 | High-speed steel short column drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439491.2A CN111975053A (en) | 2019-05-24 | 2019-05-24 | High-speed steel short column drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111975053A true CN111975053A (en) | 2020-11-24 |
Family
ID=73436896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910439491.2A Pending CN111975053A (en) | 2019-05-24 | 2019-05-24 | High-speed steel short column drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111975053A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395167A (en) * | 1981-03-09 | 1983-07-26 | National Carbide Tool, Inc. | Router especially for use as a fiber-metal cutter |
| JPH0390307A (en) * | 1989-09-01 | 1991-04-16 | Efupure Kk | Core drill |
| KR20050107538A (en) * | 2004-05-07 | 2005-11-11 | 이달호 | Drill having a cooling hole and a lubricating hole for dry machining |
| CN104338981A (en) * | 2013-07-31 | 2015-02-11 | 常州耐尔特精密工具有限公司 | Welding type inner-cooling drill |
| CN206500659U (en) * | 2017-01-20 | 2017-09-19 | 广州市科大机械设备有限公司 | A kind of anti-blocking drill bit |
| CN107822720A (en) * | 2017-10-26 | 2018-03-23 | 上海杰达齿科制作有限公司 | Gear division drill bit, plantation guide plate and its application method |
| CN207563794U (en) * | 2017-11-08 | 2018-07-03 | 新昌县高盛农业发展有限公司 | A kind of fried dough twist formula composite drill bit |
| CN208662617U (en) * | 2018-07-23 | 2019-03-29 | 吉林工程技术师范学院 | A kind of Novel auger bit |
| CN210334478U (en) * | 2019-05-24 | 2020-04-17 | 江苏叁陆零工具有限公司 | High-speed steel short column drill bit |
-
2019
- 2019-05-24 CN CN201910439491.2A patent/CN111975053A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395167A (en) * | 1981-03-09 | 1983-07-26 | National Carbide Tool, Inc. | Router especially for use as a fiber-metal cutter |
| JPH0390307A (en) * | 1989-09-01 | 1991-04-16 | Efupure Kk | Core drill |
| KR20050107538A (en) * | 2004-05-07 | 2005-11-11 | 이달호 | Drill having a cooling hole and a lubricating hole for dry machining |
| CN104338981A (en) * | 2013-07-31 | 2015-02-11 | 常州耐尔特精密工具有限公司 | Welding type inner-cooling drill |
| CN206500659U (en) * | 2017-01-20 | 2017-09-19 | 广州市科大机械设备有限公司 | A kind of anti-blocking drill bit |
| CN107822720A (en) * | 2017-10-26 | 2018-03-23 | 上海杰达齿科制作有限公司 | Gear division drill bit, plantation guide plate and its application method |
| CN207563794U (en) * | 2017-11-08 | 2018-07-03 | 新昌县高盛农业发展有限公司 | A kind of fried dough twist formula composite drill bit |
| CN208662617U (en) * | 2018-07-23 | 2019-03-29 | 吉林工程技术师范学院 | A kind of Novel auger bit |
| CN210334478U (en) * | 2019-05-24 | 2020-04-17 | 江苏叁陆零工具有限公司 | High-speed steel short column drill bit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201124 |