CN220613058U - Expansion processing positioning device for thin-wall cylindrical part - Google Patents
Expansion processing positioning device for thin-wall cylindrical part Download PDFInfo
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- CN220613058U CN220613058U CN202322283683.3U CN202322283683U CN220613058U CN 220613058 U CN220613058 U CN 220613058U CN 202322283683 U CN202322283683 U CN 202322283683U CN 220613058 U CN220613058 U CN 220613058U
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- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model provides an expansion processing positioning device for a thin-wall cylindrical part, which belongs to the field of thin-wall cylindrical part processing, and comprises an expansion assembly and a supporting assembly, wherein the expansion assembly adopts a cylindrical structure matched with the size of an inner cavity of a workpiece to be processed, a plurality of through gaps are uniformly and alternately arranged on the expansion assembly along the circumferential direction, meanwhile, a through inner conical surface is arranged at the center of the expansion assembly, and an inner thread is arranged on the inner conical surface; the support assembly adopts a conical structure matched with the inner conical shape, and is provided with external threads so as to be connected with the expansion assembly through threads. According to the utility model, the supporting force is generated by screwing the supporting component, so that the expansion component expands and completely fits and presses the inner cavity of the thin-wall cylindrical part to realize processing positioning, the deformation in processing is effectively reduced, the thin-wall cylindrical part is not damaged during installation and disassembly, and the device has the advantages of simple structure and reliable operation.
Description
Technical Field
The utility model belongs to the field of thin-wall cylindrical part machining, and particularly relates to an expansion machining positioning device for a thin-wall cylindrical part.
Background
In the engineering practice of numerical control machining of the thin-wall cylindrical part, the problem that the thin-wall cylindrical part is damaged when the machining positioning device is installed and disassembled needs to be avoided, and the deformation problem of the numerical control machining of the thin-wall cylindrical part needs to be considered. Therefore, the uniformity requirement on the supporting force of the supporting device for processing the thin-wall cylindrical parts is very high, and meanwhile, the supporting device is required to have a certain positioning function in consideration of batch processing of the thin-wall cylindrical parts in the engineering practice process.
In the prior art, a traditional cylindrical part machining and positioning mode is generally adopted, wherein a three-jaw machining mode is easy to cause clamping deformation of a thin-wall cylindrical part; the mode that the mandrel is clamped on one side easily causes the processing deformation caused by uneven supporting force of the inner wall, and the large internal stress can damage the finished part during installation and disassembly.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide an expansion processing positioning device for a thin-wall cylindrical part, which aims to solve the problem that the existing processing positioning device is easy to cause deformation of the thin-wall cylindrical part.
In order to achieve the above purpose, the utility model provides an expansion processing positioning device for a thin-wall cylindrical part, which comprises an expansion assembly and a supporting assembly, wherein the expansion assembly adopts a cylindrical structure matched with the size of an inner cavity of a workpiece to be processed, a plurality of through notches are uniformly and alternately arranged on the expansion assembly along the circumferential direction, meanwhile, a through inner conical surface is arranged at the center of the expansion assembly, and an inner thread is arranged on the inner conical surface; the support assembly adopts a conical structure matched with the inner conical shape, and is provided with external threads so as to be connected with the expansion assembly through threads.
As a further preferable aspect, the expansion processing positioning device further comprises a positioning component, wherein the diameter of the positioning component is larger than that of the expansion component, a through hole with internal threads is formed in the center of the positioning component, meanwhile, a connecting portion is arranged at one end of the expansion component, and external threads are arranged on the connecting portion to be connected with the positioning component through threads.
Further preferably, the number of the through notches is 16 to 20.
Further preferably, the distance between adjacent through gaps is 130mm to 150mm.
Further preferably, the distance between adjacent through notches is 135mm to 145mm.
Further preferably, the width of the through notch is 0.5mm to 1mm.
Further preferably, the width of the through notch is 0.7mm to 0.9mm.
As a further preferred feature, one end of the support assembly is further provided with a clamping portion, the clamping portion being located at the center of the support assembly.
As a further preferred feature, the expansion assembly is made of low carbon steel.
As a further preferred feature, the support assembly and expansion assembly employ T-threads.
In general, the above technical solutions conceived by the present utility model have the following beneficial effects compared with the prior art:
1. the shape of the expansion assembly in the expansion processing positioning device is matched with the size of the inner cavity of the thin-wall cylindrical part, the expansion assembly can freely extend into the inner cavity of the thin-wall cylindrical part, and then the support assembly is screwed to generate supporting force, so that the expansion assembly expands and completely adheres and presses the inner cavity of the thin-wall cylindrical part to realize processing positioning, the uniform supporting force is ensured to be applied to all parts of the inner cavity of the thin-wall cylindrical part in the processing process, the deformation in the processing is effectively reduced, the thin-wall cylindrical part is not damaged in the mounting and dismounting processes, and the expansion processing positioning device has the advantages of simple structure and reliable operation;
2. particularly, the positioning assembly with the diameter larger than that of the expansion assembly is arranged at one end of the expansion assembly, so that the positioning assembly can be completely attached to the end face of a workpiece to be processed, the positioning function is realized, and repeated alignment is not required during batch processing;
3. meanwhile, the expansion assembly is uniformly and alternately provided with the plurality of through gaps along the circumferential direction, so that the expansion assembly can be ensured to be freely expanded under the action of the supporting force of the supporting assembly, and the expansion sizes of all directions of the circumference are consistent, thereby reducing the processing deformation caused by the uneven direction and the size of the supporting force.
Drawings
FIG. 1 is a cross-sectional view of an expansion process positioning device provided by an embodiment of the present utility model;
fig. 2 is a front view of an expansion assembly provided in an embodiment of the present utility model.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
the device comprises a 1-supporting component, a 1.1-clamping part, a 2-expansion component, a 2.1-connecting part, a 2.2-penetrating notch, a 3-positioning component and a 4-workpiece to be processed.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, the utility model provides an expansion processing positioning device, which comprises an expansion assembly 2 and a supporting assembly 1, wherein the expansion assembly 2 adopts a cylindrical structure matched with the size of an inner cavity of a workpiece 4 to be processed, and the clamping mode of the expansion assembly 2 and the workpiece 4 to be processed is clearance fit, namely, the expansion assembly 2 can be freely placed into the inner cavity of the workpiece 4 to be processed in a free state; the expansion assembly 2 is uniformly and alternately provided with a plurality of through gaps 2.2 along the circumferential direction, so that the expansion assembly 2 can be freely expanded when being acted by the supporting force of the supporting assembly 1, and the expansion sizes of all directions of the circumference are consistent, thereby reducing the processing deformation caused by the uneven direction and the size of the supporting force; meanwhile, the center of the expansion assembly 2 is provided with a through inner conical surface, and the inner conical surface is provided with an inner thread; the supporting component 1 adopts a conical structure matched with the inner conical surface, and is provided with external threads so as to be in threaded connection with the expansion component 2, meanwhile, one end of the large diameter of the supporting component 1 is also provided with a clamping part 1.1, and the clamping part 1.1 is positioned at the center of the supporting component 1 and can be used for clamping and fixing in the machining process.
During operation, the expansion assembly 2 is placed into the inner cavity of the workpiece 4 to be processed, then supporting force is generated in a mode of inward conical surface knob supporting assembly 1, and supporting assembly 1 can ensure that the expansion assembly 2 is subjected to uniform supporting force, so that the expansion assembly 2 is uniform in expansion size along the circumferential direction, the expansion assembly 2 is attached to the inner cavity of the workpiece 4 to be processed after being expanded, supporting and positioning are realized, and large supporting force is provided in a small space. Meanwhile, the supporting component 1 is completely attached to the inner conical surface of the expansion component 2, and the self-centering function of the clamping part 1.1 can be guaranteed. The workpiece 4 to be processed is preferably a thin-wall cylindrical part, so that the technical problem that uniform stress support cannot be provided for the inner cavity of the thin-wall cylindrical part in the prior art can be effectively solved, the processing deformation caused by uneven inner wall supporting force is avoided, and the processed part is not damaged by larger internal stress during installation and disassembly.
Further, the expansion processing positioning device further comprises a positioning component 3, the diameter of the positioning component 3 is larger than that of the expansion component 2, a through hole with internal threads is formed in the center of the positioning component 3, meanwhile, a connecting portion 2.1 is arranged at one end of the expansion component 2, and the connecting portion 2.1 is provided with external threads to be connected with the positioning component 3 through threads. When the device works, the expansion assembly 2 can be firstly placed into the inner cavity of the workpiece 4 to be processed, and then the positioning assembly 3 is connected with the expansion assembly 2 in a threaded connection mode, so that the workpiece 4 to be processed is tightly attached to the positioning assembly 3 to achieve a positioning function; the positioning assembly 3 can be connected with the expansion assembly 2 in a threaded connection mode, and then the expansion assembly 2 is placed into the inner cavity of the workpiece to be processed, so that the workpiece 4 to be processed is tightly attached to the positioning assembly 3 to achieve a positioning function, repeated alignment is not needed during batch processing, the advantages of simple structure and convenience in operation are achieved, the technical problem that the repeated alignment is needed during batch processing in the existing engineering practice is solved, and the production efficiency can be effectively improved.
Further, the number of the through notches 2.2 is preferably 16 to 20; the distance between adjacent through gaps 2.2 is preferably 130mm to 150mm, and more preferably 135mm to 145mm; the width of the through notch 2.2 is 0.5 mm-1 mm, and further preferably 0.7 mm-0.9 mm, and through the interaction of the parameters, the problems that the structural stability of the expansion assembly 2 is poor and fracture easily occurs due to the fact that the through notch 2.2 is too wide can be avoided, and meanwhile, the expansion assembly 2 can be guaranteed to have a good expansion effect so as to stably fix a workpiece to be processed.
Further, the expansion assembly 2 is preferably made of low carbon steel, and the support assembly 1 and the expansion assembly 2 are T-shaped threads.
The working flow of the expansion processing positioning device provided by the utility model is specifically described below.
Firstly, placing the expansion assembly 2 into a workpiece 4 to be processed, then connecting the positioning assembly 3 with the expansion assembly 2 in a threaded connection mode, tightly attaching the workpiece 4 to be processed and the positioning assembly 3 to achieve a positioning function, then extending one end of the small diameter of the support assembly 1 into an inner conical surface, supporting the outer surface of the expansion assembly 2 to uniformly expand through a knob until the expansion assembly 2 is completely attached to and tightly pressed against the inner wall of the workpiece to be processed, and finally clamping the clamping part 1.1 of the support assembly 1 to perform various numerical control processing. In addition, the positioning assembly 3 and the expansion assembly 2 can be connected first, and then the expansion assembly 2 can be placed into the workpiece 4 to be processed.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The expansion processing positioning device for the thin-wall cylindrical part is characterized by comprising an expansion assembly (2) and a supporting assembly (1), wherein the expansion assembly (2) adopts a cylindrical structure matched with the size of an inner cavity of a workpiece (4) to be processed, a plurality of through gaps (2.2) are uniformly and alternately arranged on the expansion assembly (2) along the circumferential direction, meanwhile, a through inner conical surface is arranged at the center of the expansion assembly (2), and an inner thread is arranged on the inner conical surface; the support assembly (1) adopts a conical structure matched with the shape of the inner cone, and is provided with external threads so as to be connected with the expansion assembly (2) through threads.
2. The expansion processing positioning device for thin-walled tubular parts according to claim 1, characterized in that the expansion processing positioning device further comprises a positioning component (3), the diameter of the positioning component (3) is larger than that of the expansion component (2), a through hole with internal threads is formed in the center of the positioning component (3), and a connecting portion (2.1) is arranged at one end of the expansion component (2), and is provided with external threads to be connected with the positioning component (3) through threads.
3. The expansion positioning device for thin-walled tubular parts according to claim 1, characterized in that the number of through-holes (2.2) is 16-20.
4. An expansion processing positioning device for a thin-walled tubular part according to claim 1, characterized in that the distance between adjacent through-going indentations (2.2) is 130-150 mm.
5. An expansion processing positioning device for a thin-walled tubular part according to claim 1, characterized in that the distance between adjacent through-going indentations (2.2) is 135-145 mm.
6. The expansion positioning device for thin-walled tubular parts according to claim 1, characterized in that the width of the through-going gap (2.2) is 0.5 mm-1 mm.
7. The expansion positioning device for thin-walled tubular parts according to claim 1, characterized in that the width of the through-going gap (2.2) is 0.7-0.9 mm.
8. The expansion processing positioning device for thin-walled tubular parts according to claim 1, characterized in that one end of the support assembly (1) is further provided with a clamping portion (1.1), the clamping portion (1.1) being located at the center of the support assembly (1).
9. Expansion positioning device for thin-walled tubular parts according to any of the claims 1-8 characterized in that the expansion assembly (2) is made of low carbon steel.
10. Expansion positioning device for thin-walled tubular parts according to any of the claims 1-8 characterized in that the support assembly (1) and the expansion assembly (2) are T-shaped threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322283683.3U CN220613058U (en) | 2023-08-23 | 2023-08-23 | Expansion processing positioning device for thin-wall cylindrical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322283683.3U CN220613058U (en) | 2023-08-23 | 2023-08-23 | Expansion processing positioning device for thin-wall cylindrical part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220613058U true CN220613058U (en) | 2024-03-19 |
Family
ID=90222193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322283683.3U Active CN220613058U (en) | 2023-08-23 | 2023-08-23 | Expansion processing positioning device for thin-wall cylindrical part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220613058U (en) |
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2023
- 2023-08-23 CN CN202322283683.3U patent/CN220613058U/en active Active
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