CN211840295U - Stepped drill tool - Google Patents
Stepped drill tool Download PDFInfo
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- CN211840295U CN211840295U CN202020438393.5U CN202020438393U CN211840295U CN 211840295 U CN211840295 U CN 211840295U CN 202020438393 U CN202020438393 U CN 202020438393U CN 211840295 U CN211840295 U CN 211840295U
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Abstract
The utility model provides a ladder drilling tool, including handle of a knife, the fixed first drilling piece of locating handle of a knife one end and fixed first drilling piece of locating of handle of a knife one end are kept away from the second drilling piece of handle of a knife one end, first drilling piece diameter is greater than second drilling piece diameter, be equipped with first cutting edge on the first drilling piece, first drilling piece is equipped with first chip groove from second drilling piece to keeping away from second drilling piece one end, be equipped with the second cutting edge on the second drilling piece, second cutting edge one end is equipped with the drill bit pointed end, the second chip groove has been seted up from the drill bit pointed end to the one end of keeping away from the drill bit pointed end to the second drilling piece. The utility model discloses a ladder bores cutter is used for the shoulder hole processing, is different from the mode processing that the tradition utilized two different external diameter drill bits, and the drill bit need not be changed in one shot forming to improved the coaxial precision of shoulder hole, reduced machining error, reduced the processing cost.
Description
Technical Field
The utility model relates to a lathe cutter technical field, in particular to ladder bores cutter.
Background
At present, in some cavity machining parts, a stepped hole is a common composite hole (stepped hole) structure, the structure is widely applied, in some previous machining schemes, two drill bits are usually adopted to drill holes successively to complete machining, and the machining method is low in efficiency and low in machining coaxial precision.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a ladder bores cutter.
The utility model discloses a realize through following technical scheme:
the utility model discloses a ladder drilling tool, including handle of a knife, the fixed first drilling piece of locating handle of a knife one end and fixed first drilling piece of locating of handle of a knife one end are kept away from the second drilling piece of handle of a knife one end, first drilling piece diameter is greater than second drilling piece diameter, be equipped with first cutting edge on the first drilling piece, first drilling piece is equipped with first chip groove from second drilling piece to keeping away from second drilling piece one end, be equipped with the second cutting edge on the second drilling piece, second cutting edge one end is equipped with the drill bit pointed end, the second chip groove has been seted up from the drill bit pointed end to the one end of keeping away from the drill bit pointed end to the second drilling piece.
Furthermore, one end, far away from the tool holder, of the first drilling block is provided with a transverse cutting edge.
Furthermore, one end of the transverse cutting edge is provided with a chamfer edge.
Furthermore, the first cutting edge is spirally raised from the end far away from the knife handle to the knife handle, and the first chip discharge groove and the first cutting edge are synchronously arranged in a spiral mode.
Furthermore, the second cutting edge is spiral ascending form setting from the drill bit tip to the one end of keeping away from the drill bit tip, just the spiral mode synchronization setting of second chip groove and second cutting edge.
Implement the utility model discloses a ladder bores cutter has following technical characteristic and profitable technological effect:
the utility model discloses a ladder bores cutter is used for the shoulder hole processing, is different from the mode processing that the tradition utilized two different external diameter drill bits, and the drill bit need not be changed in one shot forming to improved the coaxial precision of shoulder hole, reduced machining error, reduced the processing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a stepped drill tool according to an embodiment of the present invention;
fig. 2 is a schematic view of another perspective structure of a stepped drill tool according to an embodiment of the present invention;
the cutting tool comprises a tool shank 1, a first drilling block 2, a first cutting edge 21, a first chip removal groove 22, a transverse cutting edge 23, a chamfer edge 24, a second drilling block 3, a second cutting edge 31, a drill tip 32 and a second chip removal groove 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1 and 2, in accordance with a preferred embodiment of the present invention, a step drill tool comprises a holder 1, a first drilling block 2 fixedly disposed at one end of the holder 1, and a second drilling block 3 fixedly disposed at one end of the holder 2, wherein the diameter of the first drilling block 2 is greater than the diameter of the second drilling block 3, the first drilling block 2 is provided with a first cutting edge 21, the first drilling block 2 is provided with a first chip removal groove 22 from the second drilling block 3 to the end away from the second drilling block 3, the second drilling block 3 is provided with a second cutting edge 31, one end of the second cutting edge 31 is provided with a tip 32 of a drill, and the second chip removal groove 33 is provided from the tip 32 of the drill to the end away from the tip 32 of the drill.
According to a specific embodiment, the first drilling block 2 is provided with a transverse cutting edge 23 at the end remote from the holder 1.
According to a particular embodiment, the transverse cutting edge 23 is provided at one end with a chamfer edge 24.
According to a specific embodiment, the first cutting edge 21 is spirally raised from one end away from the shank 1 in the direction of the shank 1, and the first chip groove 22 and the first cutting edge 21 are arranged in synchronization with each other in a spiral manner.
According to a specific embodiment, the second cutting edge 31 is arranged in a spiral ascending shape from the drill tip 32 to the end far away from the drill tip 32, and the second chip flutes 33 are arranged in synchronization with the spiral of the second cutting edge 31.
Further explaining the working principle of the embodiment is as follows:
in practice, for the machining of a single through hole, the operator may first drill a through hole in the workpiece through the drill tip 32 and the second cutting edge 31, and then may deburr the aperture of the through hole through the transverse cutting edge 23. For machining the trapezoidal hole, an operator can firstly drill a first through hole on the workpiece through the drill tip 32 and the second cutting edge 31, and then drill a second through hole on the workpiece through the transverse cutting edge 23, the chamfering edge 24 and the first cutting edge 21, wherein the first through hole and the second through hole are machined at one time, and the coaxial precision is high.
Implement the utility model discloses a ladder bores cutter has following technical characteristic and profitable technological effect:
the utility model discloses a ladder bores cutter is used for the shoulder hole processing, is different from the mode processing that the tradition utilized two different external diameter drill bits, and the drill bit need not be changed in one shot forming to improved the coaxial precision of shoulder hole, reduced machining error, reduced the processing cost.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a step drill cutter, its characterized in that, includes handle of a knife, the fixed first drilling piece of locating handle of a knife one end and the fixed first drilling piece of locating of handle of a knife one end and keeps away from the second drilling piece of handle of a knife one end, first drilling piece diameter is greater than second drilling piece diameter, be equipped with first cutting edge on the first drilling piece, first drilling piece is equipped with first chip groove to keeping away from second drilling piece one end from the second drilling piece, be equipped with the second cutting edge on the second drilling piece, second cutting edge one end is equipped with the drill bit pointed end, the second chip groove has been seted up to the one end of keeping away from the drill bit pointed end to the second drilling piece.
2. The stepped drill tool of claim 1, wherein the first drilling block has a transverse cutting edge at an end remote from the shank.
3. The stepped drill tool of claim 2, wherein the transverse cutting edge is provided with a chamfer edge at one end.
4. The step drill tool according to claim 1, wherein the first cutting edge is provided in a spirally rising manner from an end thereof away from the holder in the direction of the holder, and the first chip groove is provided in synchronization with the first cutting edge in a spiral manner.
5. The step drill tool according to claim 1, wherein the second cutting edge is spirally raised from the drill tip to an end away from the drill tip, and the second chip flutes are arranged in synchronization with the spiral pattern of the second cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020438393.5U CN211840295U (en) | 2020-03-30 | 2020-03-30 | Stepped drill tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020438393.5U CN211840295U (en) | 2020-03-30 | 2020-03-30 | Stepped drill tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211840295U true CN211840295U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020438393.5U Active CN211840295U (en) | 2020-03-30 | 2020-03-30 | Stepped drill tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211840295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458462A (en) * | 2020-03-30 | 2021-10-01 | 深圳市西科技术有限公司 | Stepped drill tool |
-
2020
- 2020-03-30 CN CN202020438393.5U patent/CN211840295U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458462A (en) * | 2020-03-30 | 2021-10-01 | 深圳市西科技术有限公司 | Stepped drill tool |
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