CN215966501U - Reverse inner-cooling drill bit with curved surface handle - Google Patents
Reverse inner-cooling drill bit with curved surface handle Download PDFInfo
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- CN215966501U CN215966501U CN202122233367.6U CN202122233367U CN215966501U CN 215966501 U CN215966501 U CN 215966501U CN 202122233367 U CN202122233367 U CN 202122233367U CN 215966501 U CN215966501 U CN 215966501U
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Abstract
The utility model discloses a curved-surface-shank reverse inner-cooling drill bit, which belongs to the field of mechanical engineering cutters and comprises a cutter bit and a cutter shank, wherein the cutter bit is arranged inside the cutter shank, a cooling mechanism is arranged inside the cutter bit, the cooling mechanism comprises a spiral inner-cooling hole and an inner-cooling straight hole, the spiral inner-cooling hole is spirally formed inside the cutter bit, the inner-cooling straight hole is formed on a central axis inside the cutter bit, one end of the cutter bit is integrally formed with a drill point, the other end of the cutter bit is integrally formed with a triangular curved-surface shank, the side wall of the triangular curved-surface shank is provided with a positioning surface, the flow rate and the flow rate of a cutting fluid are effectively improved by increasing the structures of the straight inner-cooling hole and the reverse inner-cooling hole, the chip removal performance of the drill bit is effectively improved, the positioning surface and the triangular-formed curved-surface structure are additionally arranged on the shank, and the problems of quick positioning and low torque of the cutter are solved, the quick positioning precision, the positioning efficiency and the torque transmission are effectively improved.
Description
Technical Field
The utility model relates to the technical field of mechanical engineering cutters, in particular to a curved-surface-shank reverse inner-cooling drill bit.
Background
Drilling is the process of drilling holes in solid metal, and a drill bit is an efficient tool for achieving the process. At present, the drill bits for conventional drilling processing mainly comprise a Y-shaped inner-cooling twist drill and a double-helix inner-cooling twist drill, and chip removal is mainly carried out by flushing cutting chips by cutting fluid discharged from a cooling hole in the front end of a bottom blade. In the prior art, deep holes of 5D and above are machined under the condition of certain cooling pressure, the chip removal efficiency is poor, and the situations of unsmooth drainage and chip blockage are easy to occur.
At present, no related technology for realizing efficient chip removal through the ingenious design of an inner cooling hole structure exists in the market. In addition, the handle part of the drill bit is mostly in the form of a straight handle, a side fixed handle and the like, and the repeated positioning is poor; the centre gripping is diameter excircle centre gripping, skids easily when the moment of torsion is great, does not see to have and promotes the relevant technique of repeated positioning accuracy and reinforcing moment of torsion transmission through stalk portion project organization.
Disclosure of Invention
The utility model aims to provide a curved-surface-shank reverse inner-cooling drill bit, which effectively improves the flow rate of cutting fluid and the flow rate of cooling fluid by increasing structures of a straight hole inner cooling hole and a reverse inner cooling hole, effectively improves the chip removal performance of the drill bit, solves the problems of quick positioning and over-low torque of a cutter by adding a positioning surface and a triangular forming curved surface structure on a shank part, and effectively improves the quick positioning precision, the positioning efficiency and the torque transmission so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a reverse interior cold drill bit of curved surface handle, includes tool bit and handle of a knife, the tool bit is installed in the inside of handle of a knife, the inside of tool bit is provided with cooling body, cooling body includes spiral interior cold hole and interior cold straight hole, spiral interior cold hole is the heliciform and sets up in the inside of tool bit, interior cold straight hole is set up in the inside axis of living of tool bit on, the one end integrated into one piece of tool bit has the drill point, the other end integrated into one piece of tool bit has triangle-shaped curved surface stalk portion, the lateral wall that triangle-shaped curved surface stalk portion is close to the tool bit is provided with the locating surface.
Preferably, the oil groove is formed in the side wall of the triangular curved handle, and one end of the spiral inner cooling hole and one end of the inner cooling straight hole extend to the side wall of the oil groove.
Preferably, the side wall of the shovel back is provided with a chip groove, and the chip groove is provided with a reverse inner cooling hole.
Preferably, the reverse inner cooling hole is respectively communicated with the other ends of the spiral inner cooling hole and the inner cooling straight hole.
Preferably, the interior of the knife handle is provided with a mounting groove matched with the triangular curved handle part, the triangular curved handle part is mounted in the knife handle through the mounting groove, and the positioning surface is abutted to the end face of the knife handle.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model provides a curved-surface-shank reverse inner-cooling drill bit, which is characterized in that a spiral inner-cooling hole and an inner-cooling straight hole are additionally arranged in a tool bit, so that cooling liquid flows in through the spiral inner-cooling hole and the inner-cooling straight hole and then flows out from the reverse inner-cooling hole to be flushed to a chip groove and a shovel back, the original cooling liquid flow is increased, chips are discharged in an accelerated manner, and cutting liquid at the front end is also driven to be discharged in an accelerated manner after the chips are discharged in an accelerated manner, so that the increase of the cutting liquid flow and the one-way quick flow of the cutting liquid can be realized, and the cutting liquid flow is improved;
2. the utility model provides a curved-surface-handle reverse inner-cooling drill bit, wherein a positioning surface is additionally arranged on a triangular curved-surface handle, when a cutter head and a cutter handle are installed, the positioning surface is abutted against the end surface of the cutter handle, the repeated positioning precision is less than 5u, the triangular curved-surface handle is installed in the cutter handle in an insertion mode, the torque transmission between the cutter handle and the drill bit is greatly increased, and the triangular curved-surface handle is integrally in a triangular structure and is matched with a triangular curved surface in the cutter handle, so that the anti-slip effect is achieved.
Drawings
FIG. 1 is a schematic view of a tool tip configuration of the present invention;
FIG. 2 is a schematic view of a triangular curved shank configuration of the present invention;
FIG. 3 is a schematic view of the mounting structure of the tool bit and the tool holder of the present invention.
Reference numbers in the figures: 1. drilling a tip; 2. carrying out shoveling; 3. a reverse inner cooling hole; 4. a chip groove; 5. a triangular curved shank; 6. positioning the surface; 7. a spiral internal cooling hole; 8. inner-cooling straight holes; 9. an oil sump; 10. a knife handle.
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 utility model provides a curved-surface-handle reverse inner-cooling drill bit as shown in figures 1-3, which comprises a tool bit and a tool handle 10, wherein the tool bit is arranged inside the tool handle 10, an installation groove matched with a triangular curved-surface handle part 5 is formed inside the tool handle 10, the triangular curved-surface handle part 5 is arranged inside the tool handle 10 through the installation groove, the triangular curved-surface handle is integrally in a triangular structure and matched with a triangular curved surface inside the tool handle 10, so that the anti-skidding effect is achieved, and a cooling mechanism is arranged inside the tool bit.
The cooling mechanism comprises a spiral inner cooling hole 7 and an inner cooling straight hole 8, the spiral inner cooling hole 7 is spirally arranged inside the tool bit, the inner cooling straight hole 8 is arranged on a central axis inside the tool bit, a drill point 1 is integrally formed at one end of the tool bit, a triangular curved handle part 5 is integrally formed at the other end of the tool bit, a positioning surface 6 is arranged on the side wall of the triangular curved handle part 5 close to the tool bit, a shovel back 2 is integrally formed on the side wall of the tool bit, the shovel back 2 is spirally wound on the side wall provided with the tool bit, a chip discharge groove 4 is formed on the side wall of the shovel back 2, a reverse inner cooling hole 3 is formed in the chip discharge groove 4, an oil groove 9 is formed in the side wall of the triangular curved handle part 5, one end of the spiral inner cooling hole 7 and one end of the inner cooling straight hole 8 extend to the side wall of the oil groove 9, the reverse inner cooling hole 3 is respectively communicated with the other ends of the spiral inner cooling hole 7 and the inner cooling straight hole 8, and cooling liquid is introduced into the oil groove 9, the cooling liquid can enter the spiral inner cooling hole 7 and the inner cooling straight hole 8, pass through the interior of the cutter head and flow out of the reverse inner cooling hole 3.
Locating surface 6 offsets with handle of a knife 10 terminal surface, reaches the location purpose of tool bit and the installation of handle of a knife 10, and repeated positioning accuracy is less than 5u, again through the 5 insertive installations in the inside of handle of a knife 10 of triangle-shaped curved surface stalk portion, has greatly increased the moment of torsion transmission between handle of a knife 10 and the drill bit, further prevents the effect of skidding.
Wherein, the cooling liquid enters the spiral inner cooling hole 7 and the inner cooling straight hole 8 from the oil groove 9, rapidly flows out from the reverse inner cooling hole 3 on the side wall of the chip groove 4, rushes towards the chip groove 4 and the shovel back 2, and is full of the chip groove 4 and the shovel back 2. Most of cooling liquid flows into a chip removal groove 4, chips are washed by cutting liquid and discharged from the chip removal groove 4, part of the chips is distributed to a shovel back 2 part to lubricate and cool the shovel back 2 part, the cooling liquid enters an inner cooling straight hole 8 from an oil groove 9, the cooling liquid is sprayed out from a reverse inner cooling hole 3 and flows out from the chip removal groove 4, the original flow rate of the cooling liquid is increased, the chips are discharged in an accelerated mode, after the chips are discharged in an accelerated mode, the cutting liquid at the front end is also driven to discharge in an accelerated mode backwards, therefore, the flow rate of the cutting liquid can be increased, the cutting liquid can flow in a single direction and can flow fast, and compared with a traditional double inner cooling spiral hole drill, the chip removal efficiency of the drill is improved by at least 30%.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a reverse interior cold drill of curved surface handle, includes tool bit and handle of a knife (10), its characterized in that: the tool bit is installed in the inside of handle of a knife (10), the inside of tool bit is provided with cooling body, cooling body includes spiral internal cooling hole (7) and interior cold straight hole (8), spiral internal cooling hole (7) hole is the heliciform and sets up in the inside of tool bit, interior cold straight hole (8) are set up in the inside axis of living of tool bit on, the one end integrated into one piece of tool bit has drill point (1), the other end integrated into one piece of tool bit has triangle-shaped curved surface stalk portion (5), the lateral wall that triangle-shaped curved surface stalk portion (5) are close to the tool bit is provided with locating surface (6).
2. The curved shank reverse inner cooling drill bit of claim 1, wherein: oil groove (9) have been seted up to the lateral wall of triangle-shaped curved surface stalk portion (5), the one end of cold hole (7) and interior cold straight hole (8) extends to on the lateral wall of oil groove (9) in the spiral.
3. The curved shank reverse inner cooling drill bit of claim 1, wherein: the lateral wall integrated into one piece of tool bit has the shovel back of the body (2), chip groove (4) have been seted up to the lateral wall of the shovel back of the body (2), anti-internal cooling hole (3) have been seted up in chip groove (4).
4. The curved shank reverse inner cooling drill bit of claim 3, wherein: the reverse internal cooling hole (3) is respectively communicated with the other ends of the spiral internal cooling hole (7) and the internal cooling straight hole (8).
5. The curved shank reverse inner cooling drill bit of claim 1, wherein: the tool handle is characterized in that a mounting groove matched with the triangular curved surface handle part (5) is formed in the tool handle (10), the triangular curved surface handle part (5) is mounted in the tool handle (10) through the mounting groove, and the positioning surface (6) is abutted to the end face of the tool handle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122233367.6U CN215966501U (en) | 2021-09-15 | 2021-09-15 | Reverse inner-cooling drill bit with curved surface handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122233367.6U CN215966501U (en) | 2021-09-15 | 2021-09-15 | Reverse inner-cooling drill bit with curved surface handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215966501U true CN215966501U (en) | 2022-03-08 |
Family
ID=80466366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122233367.6U Active CN215966501U (en) | 2021-09-15 | 2021-09-15 | Reverse inner-cooling drill bit with curved surface handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215966501U (en) |
-
2021
- 2021-09-15 CN CN202122233367.6U patent/CN215966501U/en active Active
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