CN216502531U - Four-blade step forming reamer - Google Patents
Four-blade step forming reamer Download PDFInfo
- Publication number
- CN216502531U CN216502531U CN202121084067.XU CN202121084067U CN216502531U CN 216502531 U CN216502531 U CN 216502531U CN 202121084067 U CN202121084067 U CN 202121084067U CN 216502531 U CN216502531 U CN 216502531U
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- forming
- cutting part
- sword
- cutting
- reamer
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Abstract
The utility model discloses a four-blade step forming reamer which comprises a cutting part, a supporting part and a handle part, wherein the front end of the supporting part is connected with the cutting part, the rear end of the supporting part is connected with the handle part, and the three parts have the same rotating central shaft; the front end face of the cutting part is planar, four forming edges are arranged on the periphery of the cutting part and extend from the front end face of the cutting part to the position close to the supporting part, chip discharge grooves are formed between every two adjacent forming edges, each forming edge extends from the front end face of the cutting part to the rear section in a spiral shape, and a spiral angle of more than 25 degrees is formed between each forming edge and the axis of the cutting part; the utility model has the advantages of long service life and good stability, and can be formed by reaming at one time, thereby improving the working efficiency and reducing the production cost.
Description
Technical Field
The utility model belongs to the technical field of metal cutting and processing, and particularly relates to a four-blade step forming reamer.
Background
The tool for processing a hole in a solid material or enlarging an existing hole is a hole processing tool, such as a twist drill, a center drill, a flat drill, a deep hole drill and the like, can process a hole in a solid material, and a reamer, an expanding drill, a boring cutter and the like can perform expanding processing on a material with an existing hole. The reaming is adopted mostly when the existing machining center performs reaming machining, and the reaming is performed by matching with a key slot milling cutter or an end milling cutter, but for the machining of the stepped hole, if the reaming is performed by layering through a plurality of reamers with different specifications, not only is the machining efficiency lower, but also the problems of large error degree and low accuracy can be caused.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the four-blade step forming reamer which can be used for reaming a step-shaped hole and performing one-step reaming forming, and is high in machining efficiency and high in precision.
The technical scheme of the utility model is as follows: the four-blade step forming reamer comprises a cutting part, a supporting part and a handle part, wherein the front end of the supporting part is connected with the cutting part, the rear end of the supporting part is connected with the handle part, and the three parts have the same rotating central shaft; the front end face of the cutting part is planar, four forming edges are arranged on the periphery of the cutting part, the forming edges extend from the front end face of the cutting part to the position close to the supporting part, a chip discharge groove is formed between every two adjacent forming edges, each forming edge extends towards the rear section from the front end face of the cutting part in a spiral shape, and a spiral angle of more than 25 degrees is formed between each forming edge and the axis of the cutting part. The hole expanding cutter expands the diameter of the existing hole on the basis of the existing hole, so that the front end surface does not bear the drilling task, the hole expanding cutter is planar, four forming blades spirally distributed around the cutting part can guide the cutting part to enter the hole, and the hole expanding cutter has the function of preventing the cutter from collapsing.
Further, the shaping sword includes the circular arc sword, the sharp all edges and the shaping ladder sword that set gradually from front to back, and the sharp all edges passes through circular arc sword transitional coupling before with the cutting portion front end face, and the shaping ladder sword is connected to the other end of the sharp all edges. The front end of the forming blade bears the maximum cutting force, so the arc-shaped blade can enlarge the aperture, and the blade breaking phenomenon caused by the too sharp blade part can be avoided, thereby effectively protecting the blade part and prolonging the service life.
Furthermore, the forming stepped blade is provided with a first-stage step, and the forming stepped blade is connected with the straight circumferential blade through a rounded curved blade.
Further, the forming stepped blade is provided with an axial relief angle and a radial relief angle.
Furthermore, the cutting part, the supporting part and the handle part are integrally formed, and the manufacturing material is hard alloy.
Further, the surface of the cutting portion is coated with a titanium nitride (TiN) coating layer
Compared with the prior art, the utility model has the beneficial effects that: the hole expanding cutter can be used for hole expanding and forming at one time, and compared with the traditional hole expanding process, the hole expanding cutter is high in precision and processing efficiency, and can effectively save processing cost; the shaping cutting part front end is the circular arc sword of mellow and full, and middle section straight line sword and rear end shaping ladder sword adopt the mellow and full transition of curve sword, can effectively protect the atress position of shaping sword, prevent that it from damaging in the course of working, have prolonged reamer's life greatly.
Drawings
Fig. 1 is an axial view of a four-edged step-forming reamer of the present invention;
fig. 2 is a front end view of the four-edged step-forming reamer of the present invention;
labeled as: the cutting part 1, the cutting part front end surface 11, the forming blade 12, the arc blade 121, the linear peripheral blade 122, the forming stepped blade 123, the curved blade 124, the chip groove 13, the support part 2, and the shank 3.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1-2, the four-blade step-formed reamer of the present invention comprises a cutting portion 1, a supporting portion 2 and a handle portion 3; the front end of the supporting part 2 is connected with the cutting part 1, the rear end is connected with the handle part 3, the cutting part 1, the supporting part 2 and the handle part 3 are integrally formed, have the same rotation center shaft and are made of hard alloy, wherein the surface of the cutting part 1 is coated with a titanium nitride (TiN) coating.
The front end face of the cutting part 1 is planar, four forming edges 12 are arranged on the cutting part 1 around the circumference, the forming edges 12 extend from the front end face 11 of the cutting part to be close to the supporting part 2, a chip discharge groove 13 is formed between every two adjacent forming edges 12, the chip discharge groove 13 penetrates through the cutting part 1 and the supporting part 2, each forming edge 12 extends from the front end face 11 of the cutting part to the rear section in a spiral shape, and a spiral angle of more than 25 degrees is formed between the forming edge 12 and the axis of the cutting part 1.
The forming blade 12 comprises an arc blade 121, a linear peripheral blade 122 and a forming stepped blade 123 which are sequentially arranged from front to back, the linear peripheral blade 122 is in transition connection with the front end face 11 of the cutting part through the arc blade 121, and the other end of the linear peripheral blade 122 is connected with the forming stepped blade 123; the forming stepped edge 123 has a one-step, and the forming stepped edge 123 is connected to the linear peripheral edge 122 by a rounded curved edge 124, and the forming stepped edge 123 is provided with an axial relief angle and a radial relief angle.
When the hole expanding cutter is used for expanding a metal hole, the hole diameter is gradually expanded along with the deepening of the cutting part 1, after the hole expanding is completed, a step-shaped hole is formed in the hole, namely the hole with the larger hole diameter processed by the forming step blade 123 is formed at the position close to a drilling plane, the depth of the hole is shallow, the deep hole milled by the straight line peripheral blade 122 is formed at the center of the hole, the depth is large, and the hole diameter is smaller. As the cutting portion 1 is inserted, metal chips are discharged from the chip groove 13 to the outside.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. Four sword ladder shaping reamer, its characterized in that: the cutting tool comprises a cutting part, a supporting part and a handle part, wherein the front end of the supporting part is connected with the cutting part, the rear end of the supporting part is connected with the handle part, and the three parts have the same rotating central shaft; the front end face of the cutting part is planar, four forming edges are arranged on the periphery of the cutting part, the forming edges extend from the front end face of the cutting part to the position close to the supporting part, a chip discharge groove is formed between every two adjacent forming edges, each forming edge extends towards the rear section from the front end face of the cutting part in a spiral shape, and a spiral angle of more than 25 degrees is formed between each forming edge and the axis of the cutting part.
2. The four-edged step-forming reamer of claim 1, wherein: the shaping sword includes the arc sword, the sharp all-round sword and the shaping ladder sword that set gradually from the front backward, and the sharp all-round sword passes through arc sword transitional coupling before with the cutting portion front end face, and the shaping ladder sword is connected to the other end of the sharp all-round sword.
3. The four-edged step-forming reamer of claim 2, wherein: the forming stepped blade is provided with a first-stage step, and the forming stepped blade is connected with the straight circumferential blade through a rounded curved blade.
4. The four-edged step-forming reamer of claim 2, wherein: the shaping ladder sword is equipped with axial relief angle and radial relief angle.
5. The four-edged step-forming reamer of claim 1, wherein: the cutting part, the supporting part and the handle part are integrally formed, and the manufacturing material is hard alloy.
6. The four-edged step-forming reamer of claim 1, wherein: the surface of the cutting portion is coated with a titanium nitride (TiN) coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084067.XU CN216502531U (en) | 2021-05-19 | 2021-05-19 | Four-blade step forming reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084067.XU CN216502531U (en) | 2021-05-19 | 2021-05-19 | Four-blade step forming reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216502531U true CN216502531U (en) | 2022-05-13 |
Family
ID=81460928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121084067.XU Active CN216502531U (en) | 2021-05-19 | 2021-05-19 | Four-blade step forming reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216502531U (en) |
-
2021
- 2021-05-19 CN CN202121084067.XU patent/CN216502531U/en active Active
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