CN215698493U - PCD stepped reamer - Google Patents
PCD stepped reamer Download PDFInfo
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- CN215698493U CN215698493U CN202121216736.4U CN202121216736U CN215698493U CN 215698493 U CN215698493 U CN 215698493U CN 202121216736 U CN202121216736 U CN 202121216736U CN 215698493 U CN215698493 U CN 215698493U
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- reamer
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Abstract
The utility model provides a PCD stepped reamer which comprises a first cutter body and a second cutter body which are coaxially arranged, wherein the diameter of the first cutter body is smaller than that of the second cutter body; the first cutter body outer circumferential surface is provided with two chip grooves along the axial direction, the two chip grooves are centrosymmetric about the circle center of the cutter body end surface, and the chip grooves penetrate through the end surfaces of the two ends of the first cutter body; the outer peripheral surface of the second cutter body is provided with a guide groove communicated with the chip groove along the axial direction of the second cutter body, and the guide groove comprises a linear groove extending from the end surface of the second cutter body along the axial direction of the second cutter body and an arc-shaped groove connected with the linear groove and extending to the peripheral surface of the second cutter body; the two chip grooves are welded with first blades on the corresponding end surfaces; and the corresponding end surfaces of the two linear grooves are welded with second blades. According to the utility model, the two-stage stepped cutting blade is coaxially arranged, so that the stepped hole can be processed on the workpiece to be processed without replacing the reamer, and the coaxial precision of the stepped hole is improved.
Description
Technical Field
The utility model relates to the technical field of cutting tools, in particular to a PCD stepped reamer.
Background
In recent years, with the development of science and technology, the requirement of the machining precision of the machine manufacturing industry is higher and higher, and the reamer is used as a common cutter for machining, and the structure of the reamer not only determines the strength and the service life of the reamer, but also determines the error size and the precision of a reamed workpiece hole. The utility model provides a cutting edge of PCD reamer mainly is polycrystalline diamond compact, and this compact is formed by polycrystalline diamond layer and hard alloy layer through high temperature high pressure suppression, and compact and tool bit are in the same place through the welding. The existing PCD reamer can not achieve the expected effect in the using process, and particularly when a stepped forming hole is machined, cutters in different forms need to be replaced, the number of tool changing times is large, the machining efficiency is low, the machining precision is not guaranteed, and the consistency of a finished part is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a PCD stepped reamer to solve the problems set forth in the background art.
In order to achieve the purpose, the utility model provides a PCD stepped reamer which comprises a first cutter body and a second cutter body which are coaxially arranged, wherein the diameter of the first cutter body is smaller than that of the second cutter body, and the first cutter rod and the second cutter body are integrally formed;
the first cutter body outer circumferential surface is provided with two chip grooves along the axial direction, the two chip grooves are centrosymmetric about the circle center of the cutter body end surface, and the chip grooves penetrate through the end surfaces of the two ends of the first cutter body;
the outer peripheral surface of the second cutter body is provided with a guide groove communicated with the chip groove along the axial direction of the second cutter body, and the guide groove comprises a linear groove extending from the end surface of the second cutter body along the axial direction of the second cutter body and an arc-shaped groove connected with the linear groove and extending to the peripheral surface of the second cutter body;
the two chip grooves are welded with first blades on the corresponding end surfaces;
the two linear grooves are welded with second blades on the corresponding end faces, and the second blades are arranged on the same side as the first blades;
the first blade protrudes out of the end face and the peripheral face of the first cutter body, and the second blade protrudes out of the end face and the peripheral face of the second cutter body.
As a preferred arrangement of the present invention, the first and second blades are PCD blades.
As a preferable arrangement of the present invention, the first blade is provided with a first transition tapered surface, and the second blade is provided with a second transition tapered surface.
As a preferable arrangement of the present invention, the section of the chip groove is a sector, and the included angle of the sector is 100 °.
As a preferable arrangement of the utility model, the total length of the first cutter body and the second cutter body is 120 mm.
As a preferred arrangement of the utility model, the first blade has a length of 18 mm.
As a preferred arrangement of the utility model, the first blade body has a diameter of 10 mm.
As a preferable arrangement of the present invention, the second cutter body is tapered, and has a diameter of 15mm at one end connected to the first cutter body and a diameter of 14mm at the other end.
As a preferred arrangement of the utility model, the length of the channel is 22 mm.
As a preferable arrangement of the present invention, the first cutter body and the second cutter body are made of steel structures.
The utility model has the beneficial effects that:
(1) the step holes can be machined on a workpiece to be machined without replacing the reamer by coaxially arranging the two-stage stepped cutting blades, so that the coaxial precision of the step holes is improved, and chamfers between the step holes with different diameters can be machined simultaneously when the step holes are machined by arranging the first transition conical surface and the second conical surface, so that the machining efficiency and the machining quality of the step reamer are improved;
(2) the tool bit is the PCD material, and first cutter body, second cutter body are made by the steel, and tool bit and cutter body welded connection have reduced the manufacturing cost of cutter, have reduced the processing degree of difficulty simultaneously.
Drawings
FIG. 1 is a schematic view of a PCD stepped reamer construction provided by the present invention;
FIG. 2 is a schematic view of the end face structure of a PCD stepped reamer body provided by the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
Example 1
Referring to fig. 1 to 2, as an embodiment of the present invention, in order to achieve the above object, the present invention provides a PCD stepped reamer, including a first cutter body 1 and a second cutter body 2 coaxially disposed, wherein a diameter of the first cutter body 1 is smaller than a diameter of the second cutter body 2, and the first cutter bar 1 and the second cutter body 2 are integrally formed;
the outer circumferential surface of the first cutter body 1 is provided with two chip grooves 3 along the axial direction, the two chip grooves 3 are centrosymmetric about the center of a circle of the end surface of the first cutter body 1, and the chip grooves 3 penetrate through the end surfaces of the two ends of the first cutter body 1;
the outer circumferential surface of the second cutter body 2 is provided with guide grooves 4 communicated with the chip grooves 3 along the axial direction, each guide groove 4 comprises a linear groove 41 extending from the end surface of the second cutter body 2 along the axial direction and an arc-shaped groove 42 connected with the linear groove 41 and extending to the circumferential surface of the second cutter body 2, and the two guide grooves 3 are centrosymmetric about the center of the circle of the end surface of the second cutter body 2;
the two chip grooves 3 are welded with first blades 5 on the corresponding end surfaces;
the two linear grooves 41 are welded with second blades 6 on the corresponding end surfaces, and the second blades 2 and the first blades 5 are arranged on the same side;
the first blade 5 protrudes out of the end surface and the peripheral surface of the first cutter body 1, and the second blade 6 protrudes out of the end surface and the peripheral surface of the second cutter body 2.
As a preferable configuration of the embodiment of the present invention, further, the first blade 5 and the second blade 6 are both PCD blades. In the embodiment, the PCD material is the prior art, and the use of the PCD cutting edge can obtain high machining precision and machining efficiency in high-speed cutting, increase the smoothness of a drilled hole, increase the rigidity of a cutter and prolong the service life of the cutter.
As a preferable arrangement of the embodiment of the present invention, further, a first transition taper surface 51 is provided on the first blade 5, and a second transition taper surface 62 is provided on the second blade 6. The contained angle that the axis of transition conical surface and cutter body formed is 45, through the setting of first transition conical surface 51, second transition conical surface 62, in the shoulder hole is in processing, can process out simultaneously with the chamfer between the shoulder hole of different diameters to promote the machining efficiency and the processingquality of ladder reamer. The transition conical surface plays certain cutting when the step reamer is reamed and removes the effect of surplus, and plays certain corrective action for seting up of circular arc chamfer is more convenient, simultaneously through progressive cutting, has improved single reaming volume, and the atress change is little, and the processing stability is good, very big improvement machining precision and machining efficiency.
As a preferable arrangement of the embodiment of the present invention, further, the section of the flute 3 is a sector, and the included angle of the sector is 100 °. The large opening angle enables chip removal to be smoother, chips generated during machining can be removed without blockage, and the machined surface can not be scratched when the chips are removed, so that the smoothness of a machined hole is improved, and the machining efficiency and the machining quality are improved.
As a preferable configuration of the embodiment of the present invention, the total length of the first blade 1 and the second blade 2 is further 120 mm.
As a preferable arrangement of the embodiment of the present invention, further, the length of the first blade 1 is 18 mm.
As a preferable configuration of the embodiment of the present invention, the diameter of the first cutter body 1 is further 10 mm.
As a preferable configuration of the embodiment of the present invention, the second cutter body 2 is tapered, and has a diameter of 15mm at one end connected to the first cutter body 1 and a diameter of 14mm at the other end.
As a preferable arrangement of the embodiment of the present invention, further, the length of the guide groove 4 is 22 mm.
As a preferable arrangement of the embodiment of the present invention, the first cutter body 1 and the second cutter body 2 are made of steel structures.
In conclusion, the two-stage stepped cutting blade is coaxially arranged, so that a workpiece to be machined can be machined into the stepped hole without replacing the reamer, the coaxial precision of the stepped hole is improved, and chamfers between the stepped holes with different diameters can be machined simultaneously when the stepped hole is machined, so that the machining efficiency and the machining quality of the stepped reamer are improved; meanwhile, the tool bit is made of PCD materials, the first tool body and the second tool body are made of steel, and the tool bit is welded with the tool bodies, so that the production cost of the tool is reduced, and the machining difficulty is reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. A PCD stepped reamer is characterized by comprising a first cutter body and a second cutter body which are coaxially arranged, wherein the diameter of the first cutter body is smaller than that of the second cutter body, and the first cutter rod and the second cutter body are integrally formed;
the circumferential surface of the first cutter body is provided with two chip grooves along the axial direction, the two chip grooves are centrosymmetric about the circle center of the end surface of the first cutter body, and the chip grooves penetrate through the end surfaces of two ends of the first cutter body;
the outer peripheral surface of the second cutter body is provided with a guide groove communicated with the chip groove along the axial direction of the second cutter body, and the guide groove comprises a linear groove extending from the end surface of the second cutter body along the axial direction of the second cutter body and an arc-shaped groove connected with the linear groove and extending to the peripheral surface of the second cutter body;
the two chip grooves are welded with first blades on the corresponding end surfaces;
the two linear grooves are welded with second blades on the corresponding end faces, and the second blades are arranged on the same side as the first blades;
the first blade protrudes out of the end face and the peripheral face of the first cutter body, and the second blade protrudes out of the end face and the peripheral face of the second cutter body.
2. The PCD stepped reamer of claim 1 wherein the first and second blades are PCD blades.
3. The PCD stepped reamer of claim 1 wherein the first blade has a first transition tapered surface disposed thereon and the second blade has a second transition tapered surface disposed thereon.
4. The PCD stepped reamer of claim 2 wherein the flute has a fan-shaped cross-section with an included angle of 100 °.
5. The PCD stepped reamer of claim 1 wherein the first and second cutter bodies have an overall length of 120 mm.
6. The PCD stepped reamer of claim 4, wherein the first blade length is 18 mm.
7. The PCD stepped reamer of claim 4, wherein the first cutter body diameter is 10 mm.
8. The PCD stepped reamer of claim 4, wherein the second cutter body is tapered, having a diameter of 15mm at one end connected to the first cutter body and a diameter of 14mm at the other end.
9. The PCD stepped reamer of claim 1 wherein the channel length is 22 mm.
10. The PCD stepped reamer of claim 1 wherein the first and second cutter bodies are steel structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121216736.4U CN215698493U (en) | 2021-06-02 | 2021-06-02 | PCD stepped reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121216736.4U CN215698493U (en) | 2021-06-02 | 2021-06-02 | PCD stepped reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215698493U true CN215698493U (en) | 2022-02-01 |
Family
ID=80033828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121216736.4U Active CN215698493U (en) | 2021-06-02 | 2021-06-02 | PCD stepped reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215698493U (en) |
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2021
- 2021-06-02 CN CN202121216736.4U patent/CN215698493U/en active Active
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