CN114260861A - Method for quickly disassembling threaded workpiece - Google Patents
Method for quickly disassembling threaded workpiece Download PDFInfo
- Publication number
- CN114260861A CN114260861A CN202111387329.4A CN202111387329A CN114260861A CN 114260861 A CN114260861 A CN 114260861A CN 202111387329 A CN202111387329 A CN 202111387329A CN 114260861 A CN114260861 A CN 114260861A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- clamping shaft
- thread
- handed
- handed nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a method for quickly disassembling a threaded workpiece, which aims to solve the problem that the threaded workpiece is difficult to clamp and disassemble when the curved surface appearance is turned, and comprises furniture; which comprises a clamping shaft (1) and a left-handed nut (2); the clamping shaft (1) is provided with two external threads, one external thread is positioned at the middle section of the clamping shaft and is a left-hand thread, and the other external thread is positioned at the right end of the clamping shaft and is a right-hand thread; the workpiece is matched with the right-hand thread at the right end of the clamping shaft; the left-handed nut (2) is matched with the left-handed thread at the middle section of the clamping shaft; the left-handed nut (2) is a left-handed thread. During machining, the left end face of the workpiece is in contact with the left-handed nut to machine the workpiece; after processing, the left-handed nut is rotated and retreated from the clamping shaft (1) to separate the left-handed nut from the left end surface of the workpiece surface. Scratch to the workpiece caused by disassembling the workpiece is avoided, and waste products are reduced; when the workpiece is disassembled, the left-handed nut is only required to be loosened, so that a gap is generated between the left-handed nut and the workpiece, the workpiece loses screwing force and friction force, and the workpiece can be disassembled smoothly.
Description
Technical Field
The invention belongs to the technical field of numerical control lathe contour curved surface machining, and relates to a special clamping and quick disassembling tool.
Background
The thread parts are widely applied to the fields of aviation, aerospace, weaponry and the like. The external processing quality, precision and processing efficiency directly influence the product performance and the production cycle. One of key parts of a product of a certain key project of a company is an internal thread workpiece and an external thread workpiece, and the internal thread workpiece and the external thread workpiece are mass-produced parts. In order to improve the product quality and the processing efficiency, a tool is usually designed to ensure the precision of each part of the product and improve the efficiency.
The defects of the traditional technology are as follows:
the traditional processing method is to design and manufacture a conventional tool clamp, and clamp and process the appearance of the product by using the processed internal thread of the product as a reference. However, after the machining is completed, the workpiece is very difficult to disassemble, and the surface of the workpiece is easily scratched, so that a waste phenomenon is generated.
In the traditional tool clamping process, a workpiece internal thread is screwed into a tool clamp external thread, and a tool clamp positioning surface is tightly combined with a workpiece thread end surface. After the appearance turning is finished, because the workpiece thread is in threaded connection with the tool clamp, the end face of the workpiece thread is in complete contact with the positioning end face of the tail end of the clamp thread due to the influence of cutting force in the turning process, the turning is very tight, and the disassembly is very difficult. The disassembly time is longer than the machining time, and the machining efficiency is very low. The surface of the workpiece can be scratched by carelessness to generate waste products. Therefore, the novel tool is more advantageous and solves the problems. Can improve machining efficiency, promote product quality.
Disclosure of Invention
The invention aims to solve the problem that the thread workpiece is difficult to clamp and disassemble when the curved surface appearance is turned, and provides a method for quickly disassembling the thread workpiece.
The purpose of the invention is realized by the following technical scheme: a method for rapidly disassembling a thread workpiece is characterized in that a tool for rapidly disassembling the thread workpiece is adopted:
comprises a clamping shaft (1) and a left-handed nut (2); the clamping shaft (1) is provided with two external threads, one external thread is positioned at the middle section of the clamping shaft and is a left-hand thread, and the other external thread is positioned at the right end of the clamping shaft and is a right-hand thread; the left end of the clamping shaft (1) is provided with a section of optical axis; a step left end formed by a positioning boss is arranged between the left-hand thread and the right-hand thread and serves as a positioning end face; a tool withdrawal groove is arranged between the left-handed thread and the positioning end surface step; the left-handed nut (2) is a left-handed thread;
the method comprises the following specific steps:
during processing, one end of the clamping shaft (1) is clamped by the equipment chuck, and the other end of the clamping shaft is in threaded connection with a workpiece; the workpiece is matched with the right-hand thread at the right end of the clamping shaft; the left-handed nut (2) is fixed on the clamping shaft 1, is positioned on the left side of the end surface and is matched with the left-handed thread on the middle section of the clamping shaft; the left end surface of the workpiece is contacted with the left-handed nut to process the workpiece;
after processing, the left-handed nut is rotated and retreated from the clamping shaft (1) to separate the left-handed nut from the left end surface of the workpiece surface.
The invention has the beneficial effects that:
the tool for clamping and disassembling the turning curved surface appearance of the threaded workpiece is simple in structure, low in manufacturing cost, simple to operate and high in disassembling efficiency. Meanwhile, the workpiece is prevented from being scratched due to the disassembly of the workpiece, waste products are reduced, and the product quality is improved; the clamping and the disassembly are convenient, and the processing efficiency is improved. The tool with different specifications can be manufactured according to the actual product size, and certain universality is achieved.
Drawings
FIG. 1 is a two-dimensional view of the tool assembly, wherein 1 is a clamping shaft, and 2 is a left-handed nut;
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the special clamp for quickly disassembling the threaded workpiece, namely the tool for clamping and disassembling the turning curved surface appearance of the threaded workpiece, comprises a clamping shaft 1 and a left-handed nut 2;
clamping axle 1 is used for clamping the work piece: the clamping shaft 1 is provided with two external threads, one external thread is positioned at the middle section of the clamping shaft and is a left-hand thread, and the other external thread is positioned at the right end of the clamping shaft and is a right-hand thread; the left end of the clamping shaft 1 is provided with a section of optical axis; the left-handed thread and the right-handed thread are positioned by a step formed by a positioning boss. A tool withdrawal groove is arranged between the left-handed thread and the step of the left end surface of the positioning boss.
One end of the clamp is clamped by the equipment chuck, and the other end of the clamp is in threaded connection with the workpiece; the workpiece is matched with the right-hand thread at the right end of the clamping shaft 1. And the optical axis at the left end of the clamp clamping shaft 1 is clamped and clamped by numerical control equipment.
The left-handed nut 2 is used for clamping and positioning and quickly disassembling a workpiece and is fixed on the positioning end face of the clamping shaft 1 during machining. Is a left-handed thread;
the left-handed nut 2 is arranged on the clamping shaft 1 (between the clamp and the workpiece) and is matched with the left-handed thread at the middle section of the clamping shaft 1.
Further, the outer diameter of the left-hand thread of the clamping shaft 1 is smaller than the maximum outer diameter of the positioning boss.
Further, the maximum outer diameter of the positioning boss is smaller than the outer diameter of the right-hand thread of the clamping shaft 1.
The positioning boss is positioned in the workpiece threaded hole, so that the left end face of the workpiece internal thread is in contact with the right end face of the left-handed nut 2.
The principle of the invention is as follows:
the principle that the screwing force directions of the left-handed thread and the right-handed thread are different to generate reverse friction force is utilized. A left-handed external thread is added on a clamping shaft 1 in figure 1, and a left-handed nut 2 in figure 1 is installed on the clamping shaft 1 (between a clamp and a workpiece) by utilizing the principle of matching of two threads. The left-handed nut 2 is fixed on the reference surface of the end surface of the clamping shaft 1, and the internal thread of the workpiece is screwed on the external thread of the clamping shaft 1, so that the end surface of the internal thread of the workpiece is tightly contacted and screwed with one surface of the left-handed nut 2. After processing, the left-handed nut 2 is withdrawn in the opposite direction by using the hook wrench, so that the left-handed nut 2 is separated from the surface of the workpiece, no contact surface exists, pressing force and friction force are not generated, and the workpiece can be smoothly disassembled.
Production practices show that the left-handed screw nut 2 can only be selected by the left-handed screw, if the right-handed screw is adopted, the screwing direction of the left-handed screw nut 2 and the screwing direction of a workpiece are the same when the equipment rotates, and the generated friction force enables the left-handed screw nut 2 to withdraw towards the main shaft direction, so that the workpiece deviates towards the chuck direction, waste products are generated, and even safety accidents occur.
The working process of the invention is as follows:
an optical axis at one end of the clamp clamping shaft 1 is clamped and clamped by numerical control equipment, and the other end of the clamp clamping shaft is matched with a right-handed external thread of a workpiece and an internal thread of the workpiece to be machined.
Then, a matching piece left-handed nut 2 with a left-handed thread as an internal thread is manufactured, the outer diameter is larger than the diameter of the workpiece positioning table surface, and wrench holes are manufactured around the outer diameter for convenient disassembly.
After the left-handed nut 2 is screwed down, the right-handed nut is attached to the right-handed thread straight table surface of the clamping shaft 1 to form a positioning surface.
Wherein, the right-hand thread, the end face and the maximum outer diameter of the clamping shaft 1 need to be provided with finishing allowance. After the machining of other parts is completed, the clamping jaw is clamped on the equipment, and finish machining is completed at the same time, so that the coaxiality of the external thread and the main shaft of the equipment is ensured, and the requirement of the coaxiality of the inside and the outside of the machined workpiece is ensured. When the clamping is carried out again, the requirements of the right-handed thread of the clamping shaft 1, the coaxiality and the verticality of the end face and the rotation center of the machine tool can be met by measuring and aligning the outer diameter and the end face, so that the requirements of the size precision and the action tolerance of the product are met.
During machining, the main shaft of the machine tool rotates forwards. The workpiece is a right-handed thread, and the screwing force direction is clockwise and rightward when viewed from the main shaft direction, so that the workpiece has a moving trend towards the chuck direction, and the left-handed nut 2 also has a moving trend towards the main shaft direction. The clamping shaft 1 is provided with a left-handed external thread which tends to move in the direction away from the main shaft to generate relative motion. The more the left-hand nut 2 and the workpiece are rotated, the tighter the nut is. Realize the location promptly, realize the clamping again.
When the tool is disassembled, the left-handed nut 2 is loosened clockwise (seen away from the main shaft) by the wrench, so that a gap is generated between the left-handed nut 2 and a workpiece, the workpiece loses screwing force and friction force, and the tool can be disassembled smoothly. Realize quick dismantlement to can prevent to use the instrument because of dismantling difficulty fish tail work piece surface and terminal surface.
Claims (6)
1. A method for rapidly disassembling a thread workpiece is characterized in that a tool for rapidly disassembling the thread workpiece is adopted:
comprises a clamping shaft (1) and a left-handed nut (2); the clamping shaft (1) is provided with two external threads, one external thread is positioned at the middle section of the clamping shaft and is a left-hand thread, and the other external thread is positioned at the right end of the clamping shaft and is a right-hand thread; the left end of the clamping shaft (1) is provided with a section of optical axis; a step left end formed by a positioning boss is arranged between the left-hand thread and the right-hand thread and serves as a positioning end face; a tool withdrawal groove is arranged between the left-handed thread and the positioning end surface step; the left-handed nut (2) is a left-handed thread;
the method comprises the following specific steps:
during processing, one end of the clamping shaft (1) is clamped by the equipment chuck, and the other end of the clamping shaft is in threaded connection with a workpiece; the workpiece is matched with the right-hand thread at the right end of the clamping shaft;
the left-handed nut (2) is fixed on the clamping shaft, is positioned on the left side of the end surface and is matched with the left-handed thread on the middle section of the clamping shaft; the left end surface of the workpiece is contacted with the left-handed nut to process the workpiece;
after processing, the left-handed nut is rotated and retreated from the clamping shaft (1) to separate the left-handed nut from the left end surface of the workpiece surface.
2. The clamp for quickly disassembling the threaded workpieces as recited in claim 1, characterized in that the optical axis at the left end of the clamping shaft (1) is clamped and clamped by a numerical control device.
3. The clamp for rapidly disassembling the threaded workpieces as recited in claim 1, wherein the left-handed nut (2) is used for clamping, positioning and rapidly disassembling the workpieces and is fixed on the positioning end face of the clamping shaft 1 during machining.
4. A method of quickly removing a threaded workpiece as in claim 1 wherein the left-hand nut is mounted on a clamping spindle on the left side of the workpiece.
5. The method for quickly disassembling the threaded workpiece according to claim 1, wherein the outer diameter of the left-hand thread of the clamping shaft is smaller than the maximum outer diameter of the positioning boss.
6. The method for quickly disassembling a threaded workpiece according to claim 1, wherein the maximum outside diameter of the positioning boss is smaller than the outside diameter of the right-hand thread of the clamping shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387329.4A CN114260861A (en) | 2021-11-22 | 2021-11-22 | Method for quickly disassembling threaded workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387329.4A CN114260861A (en) | 2021-11-22 | 2021-11-22 | Method for quickly disassembling threaded workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114260861A true CN114260861A (en) | 2022-04-01 |
Family
ID=80825347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111387329.4A Pending CN114260861A (en) | 2021-11-22 | 2021-11-22 | Method for quickly disassembling threaded workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114260861A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE295969C (en) * | ||||
| GB320472A (en) * | 1928-08-30 | 1929-10-17 | William Whelan | Improvements in screw threaded stud extractors |
| CN204487233U (en) * | 2015-03-18 | 2015-07-22 | 神龙汽车有限公司 | A kind of quick detachable pull bar anticreep centralizer |
| CN204686514U (en) * | 2015-06-17 | 2015-10-07 | 长春职业技术学院 | A kind of cover parts numerical control turning fixture |
| CN105215749A (en) * | 2015-10-20 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of hold down gag for part threaded interior hole location end face in Vehicle Processing |
| CN107725566A (en) * | 2017-11-30 | 2018-02-23 | 张小龙 | Check bolt nut structure assembly |
-
2021
- 2021-11-22 CN CN202111387329.4A patent/CN114260861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE295969C (en) * | ||||
| GB320472A (en) * | 1928-08-30 | 1929-10-17 | William Whelan | Improvements in screw threaded stud extractors |
| CN204487233U (en) * | 2015-03-18 | 2015-07-22 | 神龙汽车有限公司 | A kind of quick detachable pull bar anticreep centralizer |
| CN204686514U (en) * | 2015-06-17 | 2015-10-07 | 长春职业技术学院 | A kind of cover parts numerical control turning fixture |
| CN105215749A (en) * | 2015-10-20 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of hold down gag for part threaded interior hole location end face in Vehicle Processing |
| CN107725566A (en) * | 2017-11-30 | 2018-02-23 | 张小龙 | Check bolt nut structure assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107914173B (en) | Steerable micro-drilling and milling device for machining inner and outer cavities of workpiece | |
| CN108637285B (en) | Irregular workpiece centering clamping chuck | |
| CN202292184U (en) | Automatic centering flat tongs for machine | |
| CN110405497B (en) | Tailstock thimble positioning combined clamp for four-axis numerical control machining center | |
| CN111390211A (en) | Chuck structure for rapidly clamping shaft workpieces | |
| CN203459932U (en) | Clamp for processing eccentric circular arc on lathe | |
| CN204584819U (en) | A kind of three-jaw eccentric fixture | |
| CN211072635U (en) | Rapid clamping fixture | |
| CN217647990U (en) | Clamp for quickly disassembling threaded workpiece | |
| CN202088012U (en) | Mechanical clamping spring collet for holes | |
| CN114260861A (en) | Method for quickly disassembling threaded workpiece | |
| CN207915249U (en) | A kind of mould for being ground thin-walled inner bore parts | |
| CN202752901U (en) | Clamping device special for lathe | |
| CN202667837U (en) | Mantle fiber fixture device used for lathe | |
| CN112238271B (en) | Device for machining multi-thread nut in indexing manner and sequential grinding method | |
| CN212217126U (en) | Chuck structure for rapidly clamping shaft workpieces | |
| CN219901270U (en) | Special fixture capable of rapidly disassembling external thread annular thin-wall workpiece | |
| CN203853559U (en) | Piece type plug gage turning tooling fixture | |
| CN209477453U (en) | A kind of fixture suitable for fine module gear fine grinding external tooth | |
| CN202225031U (en) | Fixture of universal externally-cylindrical grinding machine | |
| CN108237408B (en) | Rotary machining center fixture | |
| CN219881905U (en) | Clamp for clamping part by utilizing internal threads of part | |
| CN216680223U (en) | Small-size manual quick compression colored disc | |
| CN213916118U (en) | Crank turning frock | |
| CN214109644U (en) | Special-shaped part coaxial arc groove finish machining tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |