CN111250762A - Drill bit convenient for detecting turning point of chisel edge during grinding and manufacturing method thereof - Google Patents
Drill bit convenient for detecting turning point of chisel edge during grinding and manufacturing method thereof Download PDFInfo
- Publication number
- CN111250762A CN111250762A CN202010201460.6A CN202010201460A CN111250762A CN 111250762 A CN111250762 A CN 111250762A CN 202010201460 A CN202010201460 A CN 202010201460A CN 111250762 A CN111250762 A CN 111250762A
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- edge
- chisel edge
- turning point
- twist drill
- chisel
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 93
- 230000010485 coping Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 11
- 238000010147 laser engraving Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004080 punching 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
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention belongs to the technical field of machining tools, and particularly relates to a drill bit convenient for detecting a turning point of a chisel edge during grinding and a manufacturing method thereof. The detection drill comprises a twist drill body, a chisel edge, a main cutting edge A, a main cutting edge B, a cutting groove A and a cutting groove B. The top of fluted drill main part be equipped with the chisel edge to the center of chisel edge is equipped with main cutting edge first and main cutting edge second respectively for the symmetry point, and the nodical chisel edge turning point first and the chisel edge turning point second that is of main cutting edge first and main cutting edge second and chisel edge respectively. The twist drill main body is provided with a cutting groove A and a cutting groove B along the main cutting edge A and the main cutting edge B respectively, and a pre-carved chisel edge turning point track A and a pre-carved chisel edge turning point track B are carved in the cutting groove A and the cutting groove B respectively. The invention reduces the difficulty of grinding the twist drill; the time required for coping is reduced; the grinding precision is improved; the loss of the twist drill caused by coping is reduced.
Description
Technical Field
The invention belongs to the technical field of machining tools, and particularly relates to a drill bit convenient for detecting a turning point of a chisel edge during grinding and a manufacturing method thereof.
Background
The twist drill is a common cutter in machining and is also a quick-wear tool, repeated grinding is needed in the using process, the grinding is not good, the punching quality is influenced, the service life of the twist drill is also influenced, the length of one main cutting edge needs to be visually observed in front for checking whether rotating points of two cross edges of the twist drill are correct or not during manual grinding, the length of the other main cutting edge needs to be visually observed after the twist drill is rotated for 180 degrees, and repeated comparison and repeated grinding are carried out. Because this alignment has time and space for distance, it is difficult to maintain accuracy, even with caliper measurements, because without a reliable stuck point, the measurement accuracy is difficult to master. When the sharpening machine is used for sharpening, the common sharpening machine only keeps the sharpening angle proper, but does not ensure that the lengths of the two main cutting edges are equal.
Disclosure of Invention
The invention aims to provide a drill bit convenient for detecting a turning point of a chisel edge during grinding and a manufacturing method thereof, wherein the correct position of the turning point of the chisel edge can be directly found without comparing the lengths of two main cutting edges and using a measuring tool.
The technical scheme of the invention is as follows:
the utility model provides a drill bit that chisel edge change point detected when convenient to coping, includes fluted drill main part, chisel edge, main cutting edge first, main cutting edge second, cutting groove first and cutting groove second.
The top of fluted drill main part be equipped with the chisel edge to the center of chisel edge is equipped with main cutting edge first and main cutting edge second respectively for the symmetry point, and the nodical chisel edge turning point first and the chisel edge turning point second that is of main cutting edge first and main cutting edge second and chisel edge respectively.
The twist drill main body is provided with a cutting groove A and a cutting groove B along the main cutting edge A and the main cutting edge B respectively, and a pre-carved chisel edge turning point track A and a pre-carved chisel edge turning point track B are carved in the cutting groove A and the cutting groove B respectively.
A manufacturing method of a drill bit convenient for detecting the turning point of a chisel edge during sharpening comprises the following steps:
the first step is as follows: and grinding the cutting groove A and the cutting groove B, the main cutting edge A and the main cutting edge B and polishing the cutting groove are finished on the twist drill body.
The second step is that: pre-carving a horizontal blade turning point track A in the cutting groove A through a carving tool; the engraving tool is a laser engraving machine.
The third step: repeating the second step of the carving process to obtain a pre-carved chisel edge turning point track B10 in the cutting groove B.
In the second step, the specific depicting steps are as follows:
make the chisel edge turning point first upwards, aim at the chisel edge turning point first with the light beam of laser engraving machine, and make chisel edge coaxial with the light beam center, start engraver laser head to the afterbody rectilinear movement of fluted drill main part, the moving path is parallel with the center pin of fluted drill main part, the fluted drill main part clockwise rotation of being centre gripping simultaneously, the ratio of the straight line walking speed of laser head and the rotational angular velocity of fluted drill main part, equal to the pitch of this fluted drill main part and the angle that the fluted drill main part rotated a week 360 degrees, carve the terminal point of cutting groove first, or nearly terminal point, from this present a pre-carved chisel edge turning point orbit first in cutting groove first.
The pre-engraved chisel edge turning point trajectory can also be engraved with a drawing pin having a higher hardness than the engraved twist drill or drawn with a high temperature resistant ink.
The starting point of the pre-engraved chisel edge turning point trajectory may also be determined by calculation rather than by reference to the machined chisel edge and chisel edge turning points.
The pre-engraved chisel edge turning point trajectory of the twist drill is not limited to the two-edge twist drill, but is also applicable to three-edge twist drill or four-edge twist drill.
The invention has the beneficial effects that:
1, the difficulty of grinding the twist drill is reduced;
2, the time required for coping is reduced;
3, the grinding precision is improved;
4 when the length comparison method of the main cutting edges is used for judging the turning point of the chisel edge, the two main cutting edges are inevitably long and short, and then the short main cutting edges are sharpened to be long, so that the loss of the twist drill can be caused by the repeated sharpening, and the loss of the twist drill caused by the sharpening is reduced.
Drawings
Fig. 1 is a top view of the twist drill.
Fig. 2 is a three-dimensional view of the twist drill 1.
Fig. 3 is a three-dimensional view 2 of the twist drill.
In the figure: the twist drill comprises a twist drill body 1, a chisel edge 2, a chisel edge turning point A3, a chisel edge turning point B4, a main cutting edge A5, a main cutting edge B6, a cutting groove A7, a cutting groove B8, a chisel edge turning point track A9 and a chisel edge turning point track B10.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in figure 1, the drill convenient for the detection of the turning point of the chisel edge during sharpening comprises a twist drill body 1, a chisel edge 2, a main cutting edge A5, a main cutting edge B6, a cutting groove A7 and a cutting groove B8.
The top of fluted drill main part 1 be equipped with chisel edge 2 to the center of chisel edge 2 is equipped with main cutting edge first 5 and main cutting edge second 6 respectively for the symmetry point, the nodical first 3 and the chisel edge turning point second 4 that are respectively for main cutting edge first 5 and main cutting edge second 6 and chisel edge 2.
The twist drill body 1 is respectively provided with a cutting groove A7 and a cutting groove B8 along a main cutting edge A5 and a main cutting edge B6, and a pre-carved chisel edge turning point track A9 and a pre-carved chisel edge turning point track B10 are respectively carved in the cutting groove A7 and the cutting groove B8.
As shown in fig. 2 and 3, in the manufacturing process of the twist drill body 1, after finishing the grinding of the cutting grooves and the main cutting edges and the polishing of the cutting grooves, a pre-engraved chisel edge turning point track a 9 and a pre-engraved chisel edge turning point track a 10 are respectively engraved in two cutting grooves a 7 and a cutting groove b 8, the engraving tool can be a laser engraving machine, the chisel edge turning point a 3 is upward, the light beam of the laser engraving machine is aligned with the chisel edge turning point a 3, the chisel edge 2 is coaxial with the center of the light beam, a laser head of the engraving machine is started to move linearly to the tail part of the twist drill body 1, the moving path is parallel to the central axis of the twist drill 1, the clamped twist drill body 1 rotates clockwise, the ratio of the linear traveling speed of the laser head to the rotation angular speed of the twist drill 1 is equal to the ratio of the pitch of the twist drill 1 to the angle of one rotation of the twist drill 1, namely 360 degrees, and the end point of the cutting groove a 7 is engraved, or near the end point, thereby presenting a pre-engraved chisel edge locus 9 in the cutting flute nail 7. Repeating the above-mentioned carving process to obtain the pre-carved chisel edge turning point track B10 in the cutting groove B8.
Claims (6)
1. A drill bit convenient for detecting the turning point of a chisel edge during coping is characterized by comprising a twist drill body (1), the chisel edge (2), a main cutting edge A (5), a main cutting edge B (6), a cutting groove A (7) and a cutting groove B (8);
the top end of the twist drill main body (1) is provided with a chisel edge (2), a main cutting edge A (5) and a main cutting edge B (6) are respectively arranged by taking the center of the chisel edge (2) as a symmetrical point, and the intersection points of the main cutting edge A (5) and the main cutting edge B (6) and the chisel edge (2) are respectively a chisel edge turning point A (3) and a chisel edge turning point B (4);
a twist drill body (1) is provided with a cutting groove A (7) and a cutting groove B (8) along a main cutting edge A (5) and a main cutting edge B (6) respectively, and a pre-carved chisel edge turning point track A (9) and a pre-carved chisel edge turning point track B (10) are carved in the cutting groove A (7) and the cutting groove B (8) respectively.
2. The method for manufacturing the drill bit convenient for detecting the point of rotation of the chisel edge during sharpening according to claim 1, comprising the steps of:
the first step is as follows: grinding a cutting groove A (7) and a cutting groove B (8), a main cutting edge A (5) and a main cutting edge B (6) and polishing the cutting grooves on the twist drill body (1);
the second step is that: pre-carving a chisel edge turning point track A (9) in the cutting groove A (7) through a carving tool; the engraving tool is a laser engraving machine;
the third step: repeating the second step of the carving process to obtain a pre-carved chisel edge turning point track B10 in the cutting groove B (8).
3. The method for manufacturing the drill bit convenient for detecting the turning point of the chisel edge during sharpening according to claim 2, wherein in the second step, the specific depicting steps are as follows:
the method comprises the steps of enabling a chisel edge turning point A (3) to face upwards, aligning a light beam of a laser engraving machine to the chisel edge turning point A (3), enabling a chisel edge (2) to be coaxial with the center of the light beam, starting a laser head of the engraving machine to move to the tail of a twist drill main body (1) in a straight line, enabling a moving path to be parallel to the central shaft of the twist drill main body (1), enabling the clamped twist drill main body (1) to rotate clockwise, and engraving the end point of a cutting groove A (7) by enabling the ratio of the straight line walking speed of the laser head to the rotating angular speed of the twist drill main body (1) to be equal to the ratio of the pitch of the twist drill main body (1) to the angle of one rotation circle, namely 360 degrees, so that a pre-engraved chisel edge turning point track A (9) is presented in the cutting groove A (.
4. The method for manufacturing a drill bit convenient for detecting the point of rotation of the chisel edge during sharpening according to claim 2 or 3, wherein in the first step, the pre-engraved track of the point of rotation of the chisel edge is drawn by a drawing needle or by a high temperature resistant ink.
5. The method for manufacturing a drill bit convenient for detecting the point of the chisel edge during coping according to claim 2 or 3, wherein the pre-engraved point of the chisel edge of the twist drill is suitable for a three-edge twist drill or a four-edge twist drill.
6. The method of claim 4 wherein the pre-scored path of point of rotation of the chisel edge is adapted to be used with a three-edged or four-edged twist drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201460.6A CN111250762B (en) | 2020-03-20 | 2020-03-20 | Drill bit convenient for detecting turning point of chisel edge during grinding and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201460.6A CN111250762B (en) | 2020-03-20 | 2020-03-20 | Drill bit convenient for detecting turning point of chisel edge during grinding and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111250762A true CN111250762A (en) | 2020-06-09 |
| CN111250762B CN111250762B (en) | 2021-02-05 |
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| CN202010201460.6A Active CN111250762B (en) | 2020-03-20 | 2020-03-20 | Drill bit convenient for detecting turning point of chisel edge during grinding and manufacturing method thereof |
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Citations (15)
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| CN111250762B (en) | 2021-02-05 |
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Effective date of registration: 20211224 Address after: 212000 group 10, Yingbei village, Yaoqiao Town, new area, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu Leigong Tools Co.,Ltd. Address before: No.26, Mingxin Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU VOCATIONAL INSTITUTE OF MECHATRONIC TECHNOLOGY |