CN211991302U - Screw tap for heat-resistant alloy steel processing - Google Patents
Screw tap for heat-resistant alloy steel processing Download PDFInfo
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- CN211991302U CN211991302U CN202020731249.0U CN202020731249U CN211991302U CN 211991302 U CN211991302 U CN 211991302U CN 202020731249 U CN202020731249 U CN 202020731249U CN 211991302 U CN211991302 U CN 211991302U
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Abstract
The utility model relates to a screw tap is used in heat-resisting alloy steel processing, including the cutting edge part, keep away empty part and grip slipper portion, keep away empty part and set up the front end at grip slipper portion, the cutting edge part sets up the front end at keeping away empty part, the last cutting edge that is the thread shape of a plurality of groups that is provided with of cutting edge part, be provided with the helicla flute between the adjacent cutting edge, the front end of cutting edge part is provided with direction cutting edge part, wherein, the diameter that the core is thick is 0.5 ~ 0.6 times of cutting edge diameter, the length of cutting edge part is 1 ~ 1.5 times of cutting edge diameter, the helical flute width is 1.2 ~ 1.6 times of back of the edge width. The utility model discloses screw tap is used in heat-resisting alloy steel processing through the structure setting of cutting edge part, can effectively improve screw machining precision and quality, improves screw machining efficiency, reduction in production cost.
Description
Technical Field
The utility model relates to a cutter technical field for the metal cutting especially relates to a screw tap is used in heat-resisting alloy steel processing.
Background
The heat-resistant alloy steel material has the characteristics of high humidity resistance and strong heat intersection resistance, and is widely applied to the manufacture of products such as turbocharger housings, gas turbine parts and the like. The heat-resistant alloy steel material has the difficult-to-cut characteristics of high hardness, strong toughness and good red hardness, most of the screw holes of the existing material are conventional screw taps made of high-speed steel, the screw taps are easy to twist off when in use, the processed screw holes are coarse in thread, large in burrs and fast in screw tap abrasion, the accuracy of the screw holes is difficult to guarantee, the processing speed is slow, and the production efficiency is low.
In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a tap for heat-resistant alloy steel processing, so that the tap has industrial utility value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a screw tap is used in heat-resisting alloy steel processing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a screw tap for machining heat-resistant alloy steel comprises a cutting edge part, a clearance part and a clamping handle part, wherein the clearance part is arranged at the front end of the clamping handle part, the cutting edge part is arranged at the front end of the clearance part, a plurality of groups of cutting edges in a thread shape are arranged on the cutting edge part, a spiral groove is formed between every two adjacent cutting edges, and a guide cutting edge part is arranged at the front end of the cutting edge part, wherein the diameter of the core thickness is 0.5-0.6 times of the diameter of the cutting edge, the length of the cutting edge part is 1-1.5 times of the diameter of the cutting edge, and the width of the spiral groove is 1.2-1.6 times of the width of an.
As a further improvement of the utility model, the number of the cutting edges and the spiral grooves is at least 3 groups.
As a further improvement, the helix angle of the spiral groove is 18 to 22 degrees, and the groove rake angle is 8 to 12 degrees.
As a further improvement, the cutting edge relief angle of the cutting edge part is 5 to 7 degrees.
As a further improvement, the guiding cutting edge angle of the guiding cutting edge part is 15-20 degrees.
As the utility model discloses a further improvement, cutting edge part and keep away the empty part and be the carbide structure setting, the surface coating of cutting edge part has the AlTiN coating.
As a further improvement of the utility model, the cutting edge part, the clearance part and the clamping handle part are integrally formed.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:
the utility model discloses screw tap is used in heat-resisting alloy steel processing through the structure setting of cutting edge part, can effectively improve screw machining precision and quality, improves screw machining efficiency, reduction in production cost.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a screw tap for heat-resistant alloy steel processing according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic view of the cutting edge portion of FIG. 1;
fig. 4 is a schematic cross-sectional view of fig. 3 taken along line a-a.
In the drawings, the meanings of the reference numerals are as follows.
1 cutting edge part 2 relief part
3 grip shank portion 4 cutting edge
5 helical flute 6 leading cutting edge portion
H cutting edge diameter I pitch
J land width K spiral groove width
L-core thick alpha helical angle
Beta guide cutting edge angle gamma groove rake angle
Theta cutting edge relief angle
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In order to make the technical solution of the present invention better understood, the technical solution 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 some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in FIGS. 1-4,
a screw tap for machining heat-resistant alloy steel comprises a cutting edge part 1, a clearance part 2 and a clamping handle part 3, wherein the clearance part 2 is arranged at the front end of the clamping handle part 3, the cutting edge part 1 is arranged at the front end of the clearance part 2, a plurality of groups of cutting edges 4 in a thread shape are arranged on the cutting edge part 1, a spiral groove 5 is arranged between every two adjacent cutting edges 4, and a guide cutting edge part 6 is arranged at the front end of the cutting edge part 1, wherein the diameter of the core thickness L is 0.5-0.6 times of the diameter H of the cutting edge, the length of the cutting edge part 1 is 1-1.5 times of the diameter H of the cutting edge, and the width K of the spiral groove is 1.2-1.6 times of the width J of.
Preferably, the number of cutting edges 4 and helical flutes 5 is at least 3 sets.
Preferably, the helix angle α of the helical groove 5 is 18 to 22 degrees, and the groove rake angle γ is 8 to 12 degrees.
Preferably, the cutting edge relief angle θ of the cutting edge portion 1 is 5 to 7 degrees.
Preferably, the guide cutting edge angle β of the guide cutting edge portion 6 is 15 to 20 degrees.
Preferably, the cutting edge part 1 and the clearance part 2 are both of a hard alloy structure, and the outer surface of the cutting edge part 1 is coated with an AlTiN coating.
Preferably, the cutting edge part 1, the clearance part 2 and the clamping handle part 3 are integrally formed, and the integrally formed structure is arranged, so that the stability of the whole is stronger, and the processing and the production are convenient.
The utility model aims at providing a screw tap for processing heat-resisting alloy steel can effectively improve screw machining precision and quality, improves screw machining efficiency, reduction in production cost.
The utility model discloses screw tap is used in heat-resisting alloy steel processing mainly includes the cutting edge part 1 of front end, the space of keeping away part 2 at middle part and the grip stem portion 3 that is used for the centre gripping installation.
Wherein, the cutting edge part 1 is provided with at least three groups of cutting edges 4 and at least three groups of spiral grooves 5 which are adjacent to the cutting edge part and are used for containing and discharging chips. A plurality of threads are arranged on the cutting edge 4, and the distance between every two adjacent threads is the thread pitch I.
The structure that adopts big core thickness sets up, and the diameter increase of the thick L of core is to cutting edge diameter H0.5 ~ 0.6 times, has increased holistic rigidity and intensity of screw tap, can effectively prevent because of screw tap core thickness L is less, and the rigidity is not enough to lead to the screw tap wrench-off scheduling problem.
The length of the cutting edge part 1 is reduced to 1-1.5 times of the diameter H of the cutting edge, the length of the cutting edge participating in cutting is reduced, cutting resistance and torsion during machining can be obviously reduced, and the twist-off of the screw tap caused by overlarge machining resistance is effectively prevented.
Through increasing spiral groove width K to increase and hold bits and chip removal space, increase spiral groove width K to 1.2 ~ 1.6 times of back of edge width J. Because the heat-resistant alloy steel material has strong toughness, the chips are in a strip shape, and the chip accommodating space and the chip removing space are increased, so that the screw tap twist-off caused by unsmooth chip removal and chip blockage can be effectively prevented.
The helix angle alpha of the spiral groove 5 is 18-22 degrees, the groove front angle gamma is 8-12 degrees, the sharpness of the cutting edge 4 can be improved, the cutting resistance is reduced, the cutting is light, fast and stable, and the surface quality and the processing quality of threads can be improved; cutting edge relief angle theta adopts less angle setting, and cutting edge relief angle theta is 5 ~ 7 degrees, has increased cutting edge 4's intensity, has improved the anti performance that bursts open.
The guide cutting edge angle beta of the guide cutting edge part 6 is set to be 15-20 degrees by adopting a smaller angle, the length of the guide cutting edge part 6 can be increased, the cutting-in of the screw tap can be slowly and gradually transited to the maximum cutting diameter of the screw tap, the cutting-in process is stable, and the thread machining precision can be improved.
The tap body is arranged in a hard alloy structure, and the outer surface of the cutting edge part 1 is coated with an AlTiN coating. The wear-resisting property of the screw tap can be effectively improved, the service life of the screw tap can be effectively prolonged, the friction coefficient during cutting can be reduced, the surface quality of the screw hole is improved, meanwhile, the higher cutting speed can be used for machining, and the production efficiency is further improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a screw tap for heat-resisting alloy steel processing, characterized in that, includes cutting edge part (1), keeps away empty part (2) and centre gripping shank portion (3), keep away empty part (2) and set up the front end at centre gripping shank portion (3), cutting edge part (1) sets up the front end at keeping away empty part (2), be provided with a plurality of groups on cutting edge part (1) and be cutting edge (4) of screw thread shape, be provided with helicla flute (5) between adjacent cutting edge (4), the front end of cutting edge part (1) is provided with direction cutting edge part (6), wherein, the diameter of core thickness (L) is 0.5 ~ 0.6 times cutting edge diameter (H), the length of cutting edge part (1) is 1 ~ 1.5 times cutting edge diameter (H), and helix groove width (K) is 1.2 ~ 1.6 times back of the edge width (J).
2. A tap for heat resistant alloy steel machining according to claim 1, characterized in that the number of said cutting edges (4) and said spiral flutes (5) is at least 3 groups.
3. The tap for heat resistant alloy steel processing according to claim 1, wherein the spiral angle (α) of the spiral groove (5) is 18 to 22 degrees, and the groove rake angle (γ) is 8 to 12 degrees.
4. The tap for heat resistant alloy steel machining according to claim 1, wherein a cutting edge relief angle (θ) of the cutting edge portion (1) is 5 to 7 degrees.
5. The tap for heat resistant alloy steel machining according to claim 1, wherein the leading cutting edge angle (β) of the leading cutting edge portion (6) is 15 to 20 degrees.
6. The tap for heat-resistant alloy steel machining according to claim 1, characterized in that the cutting edge portion (1) and the clearance portion (2) are both provided in a cemented carbide structure, and the outer surface of the cutting edge portion (1) is coated with an AlTiN coating.
7. The tap for heat resistant alloy steel machining according to claim 1, characterized in that the cutting edge portion (1), the clearance portion (2) and the grip shank portion (3) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731249.0U CN211991302U (en) | 2020-05-07 | 2020-05-07 | Screw tap for heat-resistant alloy steel processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731249.0U CN211991302U (en) | 2020-05-07 | 2020-05-07 | Screw tap for heat-resistant alloy steel processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211991302U true CN211991302U (en) | 2020-11-24 |
Family
ID=73410612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020731249.0U Active CN211991302U (en) | 2020-05-07 | 2020-05-07 | Screw tap for heat-resistant alloy steel processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211991302U (en) |
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2020
- 2020-05-07 CN CN202020731249.0U patent/CN211991302U/en active Active
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