CN219292828U - Drill bit for machining cooling holes - Google Patents
Drill bit for machining cooling holes Download PDFInfo
- Publication number
- CN219292828U CN219292828U CN202320197304.6U CN202320197304U CN219292828U CN 219292828 U CN219292828 U CN 219292828U CN 202320197304 U CN202320197304 U CN 202320197304U CN 219292828 U CN219292828 U CN 219292828U
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- intersecting line
- discharge groove
- drill
- cutter surface
- drill body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a drill bit for processing cooling holes in the field of drill bits, which comprises a drill body part, a drill shaft part, a shaft cooling hole and a transverse cooling hole, wherein the drill body part comprises a front discharge groove and a rear discharge groove, a front cutter surface and a rear cutter surface, and the front discharge groove, the rear discharge groove, the front cutter surface and the rear cutter surface are all twisted around an axis and extend towards the rear end of the drill body part; the top end surface of the drill body part is a semicircular spherical surface with the diameter of D, and the intersection line of the front cutter surface and the front discharge groove is a first intersection line; the intersecting line of the front discharge groove and the rear cutter surface is a second intersecting line, the intersecting line of the rear cutter surface and the rear discharge groove is a third intersecting line, the intersecting line of the rear discharge groove and the front cutter surface is a fourth intersecting line, and the first intersecting line, the second intersecting line, the third intersecting line and the fourth intersecting line are all on a semicircular spherical surface with the diameter of D at the top end of the drill body part. This modification eliminates the need for special customization of the tool for machining the cooling hole, resulting in reduced costs while achieving machining of the cooling hole front end.
Description
Technical Field
The utility model relates to the field of drill bits, in particular to a drill bit for machining cooling holes.
Background
The existing die casting mold industry has a large number of processes for machining cooling holes, but some factories in the existing die casting mold industry cannot machine the cooling holes, so that a lot of factories need to customize the props for machining the cooling holes when the cooling holes are required to be machined, but the cost for customizing the cutters for machining the cooling holes SR is high, and the cost is increased for the factories.
There is a need for a tool that can be used to machine a cooled drill bit and that is simple and easy to manufacture, and that can be used to machine cooling holes at a reduced cost.
Disclosure of Invention
The utility model discloses a drill bit for processing a cooling hole, which comprises a drill body part, a drill shaft part, a shaft cooling hole and a transverse cooling hole, wherein the drill body part comprises a front discharge groove, a rear discharge groove, a front cutter surface and a rear cutter surface, and the front discharge groove, the rear discharge groove, the front cutter surface and the rear cutter surface are all twisted around an axis and extend towards the rear end of the drill body part; the top end surface of the drill body part is a semicircular spherical surface with the diameter of D, and the intersection line of the front cutter surface and the front discharge groove is a first intersection line; the intersecting line of the front discharge groove and the rear cutter surface is a second intersecting line, the intersecting line of the rear cutter surface and the rear discharge groove is a third intersecting line, the intersecting line of the rear discharge groove and the front cutter surface is a fourth intersecting line, and the first intersecting line, the second intersecting line, the third intersecting line and the fourth intersecting line are all on a semicircular spherical surface with the diameter of D at the top end of the drill body part.
The shaft cooling bore extends along the axis of the drill body and drill shaft and extends through the drill shaft aft end.
The transverse cooling hole extends in a direction perpendicular to the axis of the drill body and penetrates the rake face and the flank face.
The number of the transverse cooling holes is three, and the transverse cooling holes are distributed at intervals on the drill body.
The utility model reforms the drill body part of the existing common drill bit, so that the lines of the front discharge groove, the rear discharge groove, the front cutter surface and the rear cutter surface which are intersected in pairs are positioned on the same half sphere, and the reformed drill bit is used for processing the front end of the cooling hole. This modification eliminates the need for special customization of the tool for machining the cooling hole, resulting in reduced costs while achieving machining of the cooling hole front end.
Drawings
FIG. 1 is a partial structural perspective view of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
reference numeral 1-rake face; 2-a rear cutter surface; 3-front discharge tank; 4-a rear discharge tank; 101-a first intersection line; 201-a second intersecting line; 301-a third intersecting line; 401-fourth intersection line; 5-shaft cooling holes; 6-transverse cooling holes; 7-semi-circular sphere.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model is described in detail below in connection with fig. 1-2:
the utility model discloses a drill bit for processing a cooling hole, which comprises a drill body part, a drill shaft part, a shaft cooling hole 5 and a transverse cooling hole 6, wherein the drill body part comprises a front discharge groove 3, a rear discharge groove 4, a front cutter surface 1 and a rear cutter surface 2, and the front discharge groove 3, the rear discharge groove 4, the front cutter surface 1 and the rear cutter surface 2 are all twisted around an axis and extend towards the rear end of the drill body part; the top end surface of the drill body part is a semicircular spherical surface with the diameter D, and the intersection line of the front cutter surface 1 and the front discharge groove 3 is a first intersection line 101; the line where the front discharge groove 3 and the relief surface 2 intersect is a second intersecting line 201, the line where the relief surface 2 and the relief surface 4 intersect is a third intersecting line 301, the line where the relief surface 4 and the rake surface 1 intersect is a fourth intersecting line 401, and the first intersecting line 101, the second intersecting line 201, the third intersecting line 301, and the fourth intersecting line 401 are all on the semicircular spherical surface 7 having a diameter D at the tip end of the drill body.
When the cooling hole is machined, a deep hole drilling machine is used for firstly machining the cooling hole by using a deep hole drill, then a section of length is reserved for machining the front end of the cooling hole, and finally the front end of the cooling hole is machined by using a modified common drill bit.
The shaft cooling holes 5 extend along the axis of the drill body and drill shaft and extend through the drill shaft tail end.
The transverse cooling holes 6 extend in a direction perpendicular to the axis of the drill body and extend through the rake face 1 and the relief face 2.
The number of the transverse cooling holes 6 is three, and the transverse cooling holes are distributed at intervals on the drill body.
In summary, the front end of the common drill bit is reformed into the spherical surface by reforming the common drill bit, so that the common drill bit can be used for processing the front end of the cooling hole, and the problem of overhigh cost of the conventional cutter for customizing and processing the cooling hole is solved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model 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 utility model 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 (4)
1. A drill bit for processing cooling hole, including boring body portion, boring shank portion, axle cooling hole and horizontal cooling hole, its characterized in that: the drill body part comprises a front discharge groove, a rear discharge groove, a front cutter surface and a rear cutter surface, and the front discharge groove, the rear discharge groove, the front cutter surface and the rear cutter surface are all twisted around an axis and extend towards the rear end of the drill body part; the top end surface of the drill body part is a semicircular spherical surface with the diameter of D, and the intersection line of the front cutter surface and the front discharge groove is a first intersection line; the intersecting line of the front discharge groove and the rear cutter surface is a second intersecting line, the intersecting line of the rear cutter surface and the rear discharge groove is a third intersecting line, the intersecting line of the rear discharge groove and the front cutter surface is a fourth intersecting line, and the first intersecting line, the second intersecting line, the third intersecting line and the fourth intersecting line are all on a semicircular spherical surface with the diameter of D at the top end of the drill body.
2. The drill bit for machining cooling holes according to claim 1, wherein: the shaft cooling bore extends along the axis of the drill body and drill shaft and extends through the drill shaft aft end.
3. The drill bit for machining cooling holes according to claim 2, wherein: the transverse cooling hole extends in a direction perpendicular to the axis of the drill body and penetrates the rake face and the flank face.
4. A drill bit for machining cooling holes according to claim 3, characterized in that: the number of the transverse cooling holes is three, and the transverse cooling holes are distributed at intervals on the drill body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197304.6U CN219292828U (en) | 2023-02-09 | 2023-02-09 | Drill bit for machining cooling holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197304.6U CN219292828U (en) | 2023-02-09 | 2023-02-09 | Drill bit for machining cooling holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219292828U true CN219292828U (en) | 2023-07-04 |
Family
ID=86951106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320197304.6U Active CN219292828U (en) | 2023-02-09 | 2023-02-09 | Drill bit for machining cooling holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219292828U (en) |
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2023
- 2023-02-09 CN CN202320197304.6U patent/CN219292828U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |