CN220372392U - NPT thread milling cutter - Google Patents
NPT thread milling cutter Download PDFInfo
- Publication number
- CN220372392U CN220372392U CN202321827820.9U CN202321827820U CN220372392U CN 220372392 U CN220372392 U CN 220372392U CN 202321827820 U CN202321827820 U CN 202321827820U CN 220372392 U CN220372392 U CN 220372392U
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- Prior art keywords
- milling cutter
- cutter
- thread
- spiral
- spiral thread
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- 238000003801 milling Methods 0.000 title claims abstract description 71
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000003754 machining Methods 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The application provides an NPT thread milling cutter, which comprises a cutter bar, wherein the cutter bar extends along a first direction, and one end of the cutter bar is provided with an integrally formed cutter body; the cutter body comprises a first spiral thread cone milling cutter and a second spiral thread cone milling cutter which are arranged along a first direction; the first spiral thread cone milling cutter is connected with the cutter bar and extends in a conical shape along a first direction, and the diameter of one end, close to the cutter bar, is relatively larger; the second spiral thread cone milling cutter is located at one end, far away from the cutter bar, of the first spiral thread cone milling cutter, extends in a conical mode along the first direction, and the diameter of one end, close to the first spiral thread cone milling cutter, is relatively smaller. According to the technical scheme, the cutter body structure with relatively smaller middle diameter and relatively larger diameters at two ends can be formed by respectively arranging the first spiral thread taper milling cutter part and the second spiral thread taper milling cutter part on the cutter bar; thereby matching the structure of the NPT pore; during machining, only a common through hole is machined in a workpiece, and the cutter body can be used for carrying out conical reaming on two ends of the through hole and machining threads.
Description
Technical Field
The application relates to the technical field of machining tools, in particular to an NPT thread milling cutter.
Background
The NPT thread is a American standard 60-degree taper pipe thread, and is divided into a general sealing cylindrical pipe thread and a general sealing taper pipe thread, and the matching mode is matched by a taper/cone and a column/cone.
When NPT threads are machined, the NPT threads need to be machined at two ends, and when the NPT threads face a large-size or large-mass workpiece, the NPT threads are difficult to machine, and the machining speed is affected, so that the problems need to be solved.
Disclosure of Invention
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide an NPT thread milling cutter.
The application provides an NPT thread milling cutter, comprising
The cutter bar extends along a first direction, and one end of the cutter bar is provided with an integrally formed cutter body;
the cutter body comprises a first spiral thread cone milling cutter part and a second spiral thread cone milling cutter part which are arranged along the first direction;
the first spiral thread taper milling cutter part is connected with a cutter bar and extends in a taper shape along the first direction, and the diameter of one end, close to the cutter bar, is relatively larger;
the second spiral thread cone milling cutter part is located at one end of the first spiral thread cone milling cutter part far away from the cutter bar, extends in a conical shape along the first direction, and is relatively smaller in diameter at one end of the second spiral thread cone milling cutter part near the first spiral thread cone milling cutter part.
Further, the method comprises the steps of,
a relief groove is further formed between the first spiral thread taper milling cutter part and the second spiral thread taper milling cutter part;
the relief groove is cylindrical, the diameters of the two ends are the same, and the relief groove and the first spiral thread cone milling cutter part and the second spiral thread cone milling cutter part are respectively integrally formed.
Further, the method comprises the steps of,
the first spiral thread cone milling cutter part and the second spiral thread cone milling cutter part are also respectively provided with a plurality of spiral chip grooves;
the plurality of spiral chip grooves are uniformly distributed around the circumferential direction;
the helical flutes extend obliquely in the first direction.
Further, the method comprises the steps of,
a butt joint groove is also arranged on the abdication groove;
the two ends of the butt joint groove are respectively in butt joint with the spiral chip groove, and the extending direction of the butt joint groove is the same as that of the spiral chip groove.
Further, the method comprises the steps of,
the end of the second spiral thread cone milling cutter part, which is far away from the first spiral thread cone milling cutter part, is a plane and is parallel to the end of the cutter bar, which is far away from the second spiral thread cone milling cutter part.
The application has the advantages and positive effects that:
according to the technical scheme, the cutter body structure with relatively smaller middle diameter and relatively larger diameters at two ends can be formed by respectively arranging the first spiral thread taper milling cutter part and the second spiral thread taper milling cutter part on the cutter bar; thereby matching the structure of the NPT pore; during machining, only a common through hole is machined in a workpiece, and the cutter body can be used for carrying out conical reaming on two ends of the through hole and machining threads, so that an NPT hole is machined at one time.
Drawings
Fig. 1 is a schematic structural diagram of an NPT thread milling cutter according to an embodiment of the present application.
The text labels in the figures are expressed as: 100-knife bar; 110-a first helical thread taper milling cutter portion; 120-a second helical thread taper milling cutter portion; 130-a yielding groove; 131-a butt joint groove; 140-spiral junk slots.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present application, the following detailed description of the present application is provided by way of example and illustration only, and should not be construed to limit the scope of the present application in any way.
Referring to fig. 1, the present embodiment provides an NPT thread milling cutter, which includes a cutter bar 100, wherein the cutter bar 100 extends along a first direction, and an integrally formed cutter body is disposed at one end of the cutter bar 100; the cutter body includes a first helical thread cone milling cutter portion 110 and a second helical thread cone milling cutter portion 120 arranged in a first direction; the first helical thread taper milling cutter portion 110 is connected to the cutter bar 100, extends conically in the first direction, and has a relatively large diameter near one end of the cutter bar 100; the second helical thread bevel cutter portion 120 is located at an end of the first helical thread bevel cutter portion 110 remote from the shank 100, extends conically in the first direction, and has a relatively small diameter at an end adjacent to the first helical thread bevel cutter portion 110.
In this embodiment, one end of the cutter bar 100 along the axial direction is provided with a cutter body; the cutter body comprises a first spiral thread cone milling cutter part 110 and a second spiral thread cone milling cutter part 120, so that the cutter body is of a structure with a relatively small middle diameter and relatively large diameters at two ends, and can be used for processing a common through hole into an NPT hole at one time, so that the efficiency is high, and the processing operation can be facilitated.
In this embodiment, the tapers of the first spiral thread taper milling cutter portion 110 and the second spiral thread taper milling cutter portion 120 are the same, and are 1:16; the thread pitches are the same and are 2.209; the thread angles are all 60 degrees.
In a preferred embodiment, a relief groove 130 is also provided between the first helical thread bevel blade portion 110 and the second helical thread bevel blade portion 120; the relief groove 130 is cylindrical, has the same diameter at both ends, and is integrally formed with the first helical thread bevel blade portion 110 and the second helical thread bevel blade portion 120, respectively.
In this embodiment, a relief groove 130 is further provided between the first spiral thread taper milling cutter portion 110 and the second spiral thread taper milling cutter portion 120; the relief groove 130 is in a cylindrical configuration with the same diameter at both ends and is relatively smaller than the diameters of the ends of the first helical thread bevel blade portion 110 and the second helical thread bevel blade portion 120.
In a preferred embodiment, the first helical thread bevel milling cutter portion 110 and the second helical thread bevel milling cutter portion 120 are further provided with a plurality of helical flutes 140, respectively; the plurality of spiral junk slots 140 are uniformly arranged around the circumferential direction; the helical flutes 140 extend obliquely in a first direction.
In this embodiment, the first spiral thread cone milling cutter portion 110 and the second spiral thread cone milling cutter portion 120 are further provided with a plurality of junk slots 140, respectively, for effectively discharging scrap iron generated in the machining process; the plurality of junk slots 140 are arranged in a circumferential direction and extend in an oblique direction along the axial direction.
In this embodiment, the plurality of junk slots 140 are parallel to each other and are uniformly arranged in the circumferential direction.
In a preferred embodiment, the yielding groove 130 is further provided with a docking groove 131; the opposite ends of the abutting groove 131 are respectively abutted with the spiral chip groove 140, and the extending direction is the same as the extending direction of the spiral chip groove 140.
In the present embodiment, the relief groove 130 is provided with a docking groove 131 for connecting the two corresponding junk slots 140; the extension direction of the abutting groove 131 is parallel to the extension direction of the chip groove 140, so that both ends can abut against the chip groove 140 on the first helical thread cone milling cutter portion 110 and the second helical thread cone milling cutter portion 120, respectively.
In a preferred embodiment, the end of the second helical thread bevel milling cutter portion 120 remote from the first helical thread bevel milling cutter portion 110 is planar and parallel to the end of the tool holder 100 remote from the second helical thread bevel milling cutter portion 120.
Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and it will be apparent to those skilled in the art that numerous modifications, adaptations or variations can be made therein without departing from the principles of the present utility model, and the above technical features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the concepts and aspects of the utility model in other applications without modification, are intended to be within the scope of this application.
Claims (5)
1. An NPT thread milling cutter, comprising
The cutter bar (100), the said cutter bar (100) extends along the first direction, one end has integrally formed cutter bodies;
the cutter body comprises a first helical thread cone milling cutter portion (110) and a second helical thread cone milling cutter portion (120) arranged along the first direction;
the first spiral thread taper milling cutter part (110) is connected with a cutter bar (100), extends in a tapered shape along the first direction, and has a relatively large diameter at one end close to the cutter bar (100);
the second helical thread taper cutter portion (120) is located at an end of the first helical thread taper cutter portion (110) away from the cutter bar (100), extends conically in the first direction, and has a relatively smaller diameter at an end closer to the first helical thread taper cutter portion (110).
2. The NPT thread milling cutter as claimed in claim 1, wherein,
a relief groove (130) is further formed between the first spiral thread cone milling cutter part (110) and the second spiral thread cone milling cutter part (120);
the relief groove (130) is cylindrical, has the same diameter at both ends, and is integrally formed with the first spiral thread taper milling cutter portion (110) and the second spiral thread taper milling cutter portion (120) respectively.
3. The NPT thread milling cutter according to claim 2, wherein,
the first spiral thread cone milling cutter part (110) and the second spiral thread cone milling cutter part (120) are also respectively provided with a plurality of spiral chip grooves (140);
the plurality of spiral chip grooves (140) are uniformly distributed around the circumferential direction;
the helical flutes (140) extend obliquely in the first direction.
4. The NPT thread milling cutter as claimed in claim 3, wherein,
a butt joint groove (131) is further formed in the yielding groove (130);
the two ends of the butt joint groove (131) are respectively in butt joint with the spiral chip groove (140), and the extending direction of the butt joint groove is the same as that of the spiral chip groove (140).
5. The NPT thread milling cutter as claimed in claim 1, wherein,
the end of the second spiral thread cone milling cutter part (120) far away from the first spiral thread cone milling cutter part (110) is a plane and is parallel to the end of the cutter bar (100) far away from the second spiral thread cone milling cutter part (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321827820.9U CN220372392U (en) | 2023-07-12 | 2023-07-12 | NPT thread milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321827820.9U CN220372392U (en) | 2023-07-12 | 2023-07-12 | NPT thread milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220372392U true CN220372392U (en) | 2024-01-23 |
Family
ID=89571570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321827820.9U Active CN220372392U (en) | 2023-07-12 | 2023-07-12 | NPT thread milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220372392U (en) |
-
2023
- 2023-07-12 CN CN202321827820.9U patent/CN220372392U/en active Active
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