CN115921996B - Tools and methods for machining compound threads - Google Patents
Tools and methods for machining compound threadsInfo
- Publication number
- CN115921996B CN115921996B CN202310059861.6A CN202310059861A CN115921996B CN 115921996 B CN115921996 B CN 115921996B CN 202310059861 A CN202310059861 A CN 202310059861A CN 115921996 B CN115921996 B CN 115921996B
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- China
- Prior art keywords
- thread
- machining
- blade
- bottom hole
- correction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Drilling Tools (AREA)
Abstract
本发明涉及螺纹加工的技术领域，具体公开了一种复合螺纹加工刀具及加工方法，旨在解决现有复合螺纹加工刀具在一次加工中不能满足螺纹孔精度要求的问题。本发明包括依次连接且同轴设置的刀柄、螺纹加工刃和螺纹底孔加工刃，刀具正向进给时，螺纹加工刃与螺纹底孔加工刃完成对螺纹底孔和螺纹的加工；为了一次性完成螺纹的加工和螺纹牙型的修正、提高螺纹的精度，设置有螺纹底孔修正刃位于螺纹底孔加工刃的同一轴向长度段部分，螺纹底孔修正刃与螺纹底孔加工刃的切削方向相反；螺纹修正刃位于螺纹加工刃的同一轴向长度段部分，螺纹修正刃与螺纹加工刃的切削方向相反，刀具反向回退时螺纹底孔修正刃和螺纹修正刃完成对螺纹底孔和螺纹牙型的修正。
This invention relates to the technical field of thread machining, specifically disclosing a composite thread machining tool and method, aiming to solve the problem that existing composite thread machining tools cannot meet the accuracy requirements of threaded holes in a single machining operation. The invention includes a tool holder, a thread machining edge, and a thread hole machining edge connected sequentially and coaxially. When the tool is fed forward, the thread machining edge and the thread hole machining edge complete the machining of the thread hole and the thread. To complete the thread machining and thread profile correction in one operation and improve thread accuracy, a thread hole correction edge is provided, located on the same axial length segment as the thread hole machining edge, with opposite cutting directions. When the tool retracts in the reverse direction, the thread hole correction edge and the thread correction edge complete the correction of the thread hole and the thread profile.
Description
Technical Field
The invention relates to the technical field of thread machining, in particular to a composite thread machining tool and a machining method.
Background
When the existing machining is used for machining the threaded hole, due to the influences of factors such as materials, cutters, processes and the like, the machined thread teeth have the problems of burrs, thermal expansion, cold contraction, deformation and the like, the size, the shape, the surface roughness and the like of the thread are influenced, and the size precision of the thread bottom hole is also influenced. The thread profile and the thread bottom hole are usually required to be subjected to secondary finish machining for correction so as to meet the technical parameter requirements of the threaded hole. In the process of machining, three steps of machining a threaded bottom hole, machining threads, correcting the threads and the bottom hole are needed, machining of the whole threaded hole can be completed through three times of machining, complex tool assembling and disassembling, hole alignment and calibration are needed, machining speed is low, machining procedures are complex, and the precision of the machined threaded hole is relatively low.
In order to simplify the processing procedure, the prior art CN104625254a discloses a composite thread cutter, which comprises a drill bit part, a reamer and a tapping thread part which are coaxially arranged, wherein the drill bit part is arranged at the top end of the cutter, the reamer is arranged behind the drill bit part, and the tapping thread part is arranged at the rear part of the reamer. The above patent will complete drilling, reaming, tapping etc. once, but not correct the processed screw thread and bottom hole at the same time, and can not meet the precision requirement of the screw hole.
Disclosure of Invention
The invention provides a composite thread machining tool and a machining method, and aims to solve the problem that the existing composite thread machining tool cannot meet the precision requirement of a threaded hole in one-time machining.
The technical scheme includes that the composite thread machining tool comprises a tool handle, a thread machining blade and a thread bottom hole machining blade, wherein the tool handle is connected to one end of the thread machining blade, the other end of the thread machining blade is connected with the thread bottom hole machining blade, the tool handle, the thread machining blade and the thread bottom hole machining blade are coaxially arranged, the thread machining blade and the thread bottom hole machining blade have the same cutting direction, and in order to finish machining of threads and correction of thread teeth at one time, machining procedures are reduced, and thread precision is improved, and the composite thread machining tool further comprises a thread bottom hole correction blade and a thread correction blade. The thread bottom hole correcting blade and the thread bottom hole machining blade are positioned on the same axial length section of the compound thread machining tool, the cutting directions of the thread bottom hole correcting blade and the thread bottom hole machining blade are opposite, and the thread correcting blade and the thread machining blade are positioned on the same axial length section of the compound thread machining tool, and the cutting directions of the thread correcting blade and the thread machining blade are opposite.
Further, in order to control the flowing direction of the chips, maintain the precision of the machined surface, reduce the cutting resistance and prolong the service life of the cutting edge, a chip groove is arranged between the thread bottom hole correction blade and the thread bottom hole machining blade, and a chip groove is arranged between the thread correction blade and the thread machining blade.
Further, the chip removal groove is a spiral groove.
Further, the chip removal groove is a straight groove.
The method for machining the composite thread comprises the following steps of fixedly mounting a cutter handle on a machine tool, driving a thread machining blade and a thread bottom hole machining blade to simultaneously rotate and feed, finishing preliminary machining of the thread bottom hole by the thread bottom hole machining blade before and finishing preliminary machining of the thread by the thread machining blade after, and driving the composite thread machining tool to rotate and back in the feeding reverse direction by the cutter handle, and finishing correction and finish machining of the thread bottom hole and the thread tooth by the thread bottom hole correction blade and the thread correction blade.
The composite thread machining tool has the advantages that in order to finish machining of a thread bottom hole and threads and correction of thread teeth and the bottom hole at one time, machining procedures are reduced, thread precision is improved, a thread bottom hole correction blade and a thread bottom hole machining blade are located on the same axial length section part of the composite thread machining tool, the cutting directions of the thread bottom hole correction blade and the thread bottom hole machining blade are opposite, the thread correction blade and the thread machining blade are located on the same axial length section part of the composite thread machining tool, and the cutting directions of the thread correction blade and the thread machining blade are opposite. A chip groove is arranged between the thread bottom hole correction blade and the thread bottom hole processing blade, and the chip groove is arranged between the thread correction blade and the thread processing blade, so that the flow direction of chips is controlled, the precision of the processed surface is kept, the cutting resistance is reduced, and the service life of the blade is prolonged.
Drawings
FIG. 1 is a front view of a compound thread machining tool;
FIG. 2 is a top view of a compound thread machining tool;
the tool is characterized by comprising a tool shank 1, a thread machining blade 2, a thread bottom hole correction blade 3, a thread bottom hole machining blade 4 and a thread correction blade 5.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the compound thread machining tool comprises a tool handle 1, a thread machining blade 2 and a thread bottom hole machining blade 4, wherein the tool handle 1 is connected to one end of the thread machining blade 2, the other end of the thread machining blade 2 is connected to the thread bottom hole machining blade 4, the tool handle 1, the thread machining blade 2 and the thread bottom hole machining blade 4 are coaxially arranged, the cutting blade directions of the thread machining blade 2 and the thread bottom hole machining blade 4 are the same, so that the cutting directions are the same, and both rotate towards the thread rotation direction during feeding. In order to finish the machining of the bottom hole and the thread, finish the correction of the thread profile and the thread bottom hole at one time, and avoid the problem of low thread precision caused by low form and position tolerance precision of the thread and the thread bottom hole during step-by-step machining, the composite thread machining tool is also provided with a thread bottom hole correction blade 3 and a thread correction blade 5. The thread bottom hole correcting blade 3 and the thread bottom hole processing blade 4 are positioned on the same axial length section of the compound thread processing cutter, the cutting direction of the thread bottom hole correcting blade 3 and the thread bottom hole processing blade 4 is opposite, the thread correcting blade 5 and the thread processing blade 2 are positioned on the same axial length section of the compound thread processing cutter, and the cutting direction of the thread correcting blade 5 and the thread processing blade 2 is opposite. The compound thread machining cutter is arranged on a machine tool through the cutter handle 1, and when the compound thread machining cutter works, the cutter handle 1 drives the to-be-threaded machining blade 2 and the thread bottom hole machining blade 4 to simultaneously rotate and feed, the thread bottom hole machining blade 4 completes preliminary machining of a thread bottom hole before, the thread machining blade 2 completes preliminary machining of threads after, and when the cutter stops feeding, the machining steps of low altitude and threads are completed. And then the cutter handle 1 drives the composite thread machining cutter to rotate back towards the feeding direction, and the reverse cutting of the thread bottom hole correction blade 3 and the thread correction blade 5 is utilized to finish the correction and finish machining of the thread bottom hole and the thread teeth.
In the machining process, only the compound thread machining tool can be rotated, only the workpiece can be rotated, and the compound thread machining tool and the workpiece can be rotated simultaneously.
According to the size of the screw thread specification, the composite thread machining tool can be manufactured into different specification models.
As shown in fig. 2, in the preferred embodiment of the present invention, the number of the thread bottom hole processing edges 4 is different from the number of the thread bottom hole correcting edges 3, while the number of the thread processing edges 2 is different from the number of the thread correcting edges 5. The number of the thread hole machining blades 4 and the thread hole correction blades 3, and the number of the thread machining blades 2 and the thread correction blades 5 may be the same or different depending on the actual situation.
In order to control the flowing direction of the chips, maintain the precision of the surface of the machined workpiece, reduce the cutting resistance, prolong the service life of the cutting edge, a chip groove is arranged between the thread bottom hole machining blade 4 and the thread bottom hole correction blade 3, and a chip groove is arranged between the thread machining blade 2 and the thread correction blade 5. The junk slots can be selected from spiral slots or straight slots.
In addition, when chip-removing processing is performed, chip-removing grooves may be provided between the thread processing edges 2, and when chip-removing processing such as extrusion is performed, chip-removing grooves may not be provided between the thread processing edges 2. The chip removal groove can be selected from a spiral groove or a straight groove;
preferably, in order to increase versatility and reduce cost, the junk slots are straight slots.
Claims (5)
1. The composite thread machining tool is characterized by further comprising a thread bottom hole correction blade (3) and a thread correction blade (5), wherein the thread bottom hole correction blade (3) and the thread bottom hole machining blade (4) are located at the same axial length section of the composite thread machining tool, the cutting direction of the thread bottom hole correction blade (3) and the cutting direction of the thread bottom hole machining blade (4) are opposite, the cutting direction of the thread correction blade (5) and the cutting direction of the thread machining blade (2) are opposite, and the cutting direction of the thread correction blade (5) and the cutting direction of the thread machining blade (2) are located at the same axial length section of the composite thread machining tool.
2. The compound thread machining tool according to claim 1, wherein a chip groove is provided between the thread pilot hole correcting blade (3) and the thread pilot hole machining blade (4).
3. The compound thread cutting tool of claim 2, wherein the junk slots are helical slots.
4. The compound thread cutting tool of claim 2, wherein the junk slots are straight slots.
5. A method for machining a composite thread, characterized by using the composite thread machining tool according to any one of claims 1 to 4, comprising the steps of:
The method comprises the steps of firstly, fixedly mounting a cutter handle (1) on a machine tool;
step two, the cutter handle (1) drives the thread machining blade (2) and the thread bottom hole machining blade (4) to simultaneously rotate and feed, the thread bottom hole machining blade (4) completes the preliminary machining of the thread bottom hole before, and the thread machining blade (2) completes the preliminary machining of the thread after;
And thirdly, the cutter handle (1) drives the composite thread machining cutter to rotate and back towards the feeding direction, and the thread bottom hole correction blade (3) and the thread correction blade (5) finish correction and finish machining of the thread bottom hole and the thread teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310059861.6A CN115921996B (en) | 2023-01-18 | 2023-01-18 | Tools and methods for machining compound threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310059861.6A CN115921996B (en) | 2023-01-18 | 2023-01-18 | Tools and methods for machining compound threads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115921996A CN115921996A (en) | 2023-04-07 |
| CN115921996B true CN115921996B (en) | 2026-01-09 |
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ID=86550938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310059861.6A Active CN115921996B (en) | 2023-01-18 | 2023-01-18 | Tools and methods for machining compound threads |
Country Status (1)
| Country | Link |
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| CN (1) | CN115921996B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117961428A (en) * | 2023-12-29 | 2024-05-03 | 武汉锅炉集团阀门有限责任公司 | A valve body processing technology and processing program design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625254A (en) * | 2014-12-31 | 2015-05-20 | 南通高盛机械制造有限公司 | Composite threaded tool and thread machining method |
| CN206405548U (en) * | 2017-01-09 | 2017-08-15 | 珠海市铭阳切削工具有限公司 | Four blade diamonds are molded threading tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08141843A (en) * | 1994-11-18 | 1996-06-04 | Toyota Motor Corp | Thread cutting tool |
| CN213135345U (en) * | 2020-09-02 | 2021-05-07 | 亚狮精密刀具(苏州)有限公司 | Screw thread one shot forming processing cutter |
| CN216177356U (en) * | 2021-06-25 | 2022-04-05 | 德阳杰创科技有限公司 | Drilling and milling thread composite milling cutter |
-
2023
- 2023-01-18 CN CN202310059861.6A patent/CN115921996B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625254A (en) * | 2014-12-31 | 2015-05-20 | 南通高盛机械制造有限公司 | Composite threaded tool and thread machining method |
| CN206405548U (en) * | 2017-01-09 | 2017-08-15 | 珠海市铭阳切削工具有限公司 | Four blade diamonds are molded threading tool |
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| Publication number | Publication date |
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| CN115921996A (en) | 2023-04-07 |
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