CN217647990U - Clamp for quickly disassembling threaded workpiece - Google Patents
Clamp for quickly disassembling threaded workpiece Download PDFInfo
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- CN217647990U CN217647990U CN202122869706.XU CN202122869706U CN217647990U CN 217647990 U CN217647990 U CN 217647990U CN 202122869706 U CN202122869706 U CN 202122869706U CN 217647990 U CN217647990 U CN 217647990U
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- 230000003287 optical Effects 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000003754 machining Methods 0.000 description 8
- 238000007514 turning Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 1
- 210000001847 Jaw Anatomy 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Abstract
The utility model relates to a clamp for rapidly disassembling a thread workpiece, which aims to solve the problem that the thread workpiece is difficult to clamp and disassemble when the curved surface appearance is turned, and comprises a clamping shaft (1) and a left-handed nut (2); the clamping shaft (1) is used for clamping a workpiece: 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 positioning boss is arranged between the left-hand thread and the 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. Scratch to the workpiece caused by disassembling the workpiece is avoided, waste products are reduced, and the product quality is improved; when the workpiece is disassembled, the left-handed nut is loosened only by looking away from the main shaft direction, 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 utility model belongs to the technical field of numerical control lathe appearance curved surface processing, a special clamping and quick frock of dismantling is related to.
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 production 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 taking the processed internal thread of the product as a reference. However, after the machining is finished, 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, the internal thread of a workpiece is screwed into the external thread of the tool clamp, and the positioning surface of the tool clamp is tightly combined with the threaded end surface of the workpiece. 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a quick anchor clamps of dismantling screw thread class work piece when solving screw thread class work piece turning curved surface appearance and dismantling difficult problem.
The utility model aims at realizing through the following technical scheme: a clamp for quickly disassembling a threaded workpiece is characterized by comprising a clamping shaft (1) and a left-handed nut (2);
the clamping shaft (1) is used for clamping a workpiece: 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 positioning boss is arranged between the left-hand thread and the right-hand thread; a tool withdrawal groove is arranged between the left-handed thread and the step on the left end surface of the positioning boss; 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 the workpiece; 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.
The utility model has the advantages that:
the utility model discloses a dismantle anchor clamps of screw thread class work piece fast, a frock that is used for screw thread class work piece turning curved surface appearance clamping and dismantles promptly, simple structure, low in manufacturing cost, easy operation dismantles efficiently. 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 fig. 1, the utility model discloses a clamp for rapidly disassembling a thread workpiece, namely a tool for clamping and disassembling a turning curved surface appearance of the thread workpiece, which 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 utility model is that:
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 utility model discloses the working process:
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 and the end surface of the clamping shaft 1 need to be provided with finishing allowance for the maximum outer diameter. 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 right-handed threads of the clamping shaft 1, coaxiality and verticality of the end face and the machine tool rotation center can be met by marking and aligning the outer diameter and the end face, so that the requirements of dimensional accuracy and action tolerance of products 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. The positioning and the clamping are realized.
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 (4)
1. A clamp for quickly disassembling a threaded workpiece is characterized by comprising a clamping shaft (1) and a left-handed nut (2);
the clamping shaft (1) is used for clamping a workpiece: 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 positioning boss is arranged between the left-hand thread and the right-hand thread; a tool withdrawal groove is arranged between the left-handed thread and the step on the left end surface of the positioning boss;
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 the workpiece; 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;
the outer diameter of the left-hand thread of the clamping shaft (1) is smaller than the maximum outer diameter of the positioning boss;
the maximum outer diameter of the positioning boss is smaller than that of the right-handed thread of the clamping shaft.
2. The clamp for quickly disassembling the threaded workpieces as recited in claim 1, wherein the optical axis at the left end of the clamping shaft (1) is clamped by a numerical control device.
3. The clamp for quickly disassembling the threaded workpieces as recited in claim 1, wherein the left-handed nut (2) is used for clamping, positioning and quickly disassembling the workpieces and is fixed on the positioning end face of the clamping shaft.
4. A clamp for quickly removing threaded workpieces as defined in claim 1 wherein the left-hand nut is mounted on the clamping spindle on the left side of the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122869706.XU CN217647990U (en) | 2021-11-22 | 2021-11-22 | Clamp for quickly disassembling threaded workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122869706.XU CN217647990U (en) | 2021-11-22 | 2021-11-22 | Clamp for quickly disassembling threaded workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217647990U true CN217647990U (en) | 2022-10-25 |
Family
ID=83660142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122869706.XU Active CN217647990U (en) | 2021-11-22 | 2021-11-22 | Clamp for quickly disassembling threaded workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217647990U (en) |
-
2021
- 2021-11-22 CN CN202122869706.XU patent/CN217647990U/en active Active
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