CN201969786U - Intermeshing type accurate pipe-expanding die - Google Patents
Intermeshing type accurate pipe-expanding die Download PDFInfo
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- CN201969786U CN201969786U CN2010206756556U CN201020675655U CN201969786U CN 201969786 U CN201969786 U CN 201969786U CN 2010206756556 U CN2010206756556 U CN 2010206756556U CN 201020675655 U CN201020675655 U CN 201020675655U CN 201969786 U CN201969786 U CN 201969786U
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- shaped oblique
- wedges
- pipe
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Abstract
The utility model discloses an intermeshing type accurate pipe-expanding die, comprising fan-shaped oblique-wedges for being mutually pieced together to form a cylindrical shape, wherein the edges of the fan-shaped oblique-wedges are in the mutually intermeshed tooth form. The welded steel pipe in relative bad roundness is expanded to form a steel pipe in right roundness by the pipe-expanding way and the pipe-expanding way is that: the core axle vertically moves by upwards pushing or downwards pulling an oil press, therefore the fan-shaped oblique-wedges are expanded outwards. The original straight type fan-shaped oblique-wedges are changed into the intermeshing tooth shape, thus the width of the part not contacting with the fan-shaped oblique-wedges is greatly widened during the pipe expanding process, so as to solve the problems that: the workpiece thinning area is concentrated and the stress is also dispersed. Thus the thickness of the expanded workpiece is more uniform, the roundness is better and the stability is also increased.
Description
Technical field
The utility model relates to a kind of accurate expanding die of engaging type that is used to process air conditioner compressed engine housing.
Background technology
Air conditioner compressed engine housing is to be welded into a cylinder behind the steel plate roll bending, can the circularity of workpiece being had a significant impact after the welding. common way is that the cylinder that will weld is placed in the expanding die, action by expanding die enlarges cylinder, after expansion, make cylinder on the size after the expansion, reach circularity preferably.
Present expanding die is made up of eight fan-shaped oblique contracts and mandrel, and as shown in Figure 1 and Figure 2, the axially-movable meeting of mandrel makes eight fan-shaped oblique contract expansions by the inclined-plane or shrinks.Owing to the gap between eight fan-shaped oblique contracts inevitably exists, gap between eight fan-shaped oblique contracts of present expanding die is a linear pattern, in the time of expansion, workpiece is very not narrow with the part that eight fan-shaped oblique contracts contact, in the process of expansion, the zone of workpiece attenuation mainly concentrates on the part that does not contact with eight fan-shaped oblique contracts, so just caused the part of workpiece attenuation very concentrated, after process of expansion finishes, workpiece will have certain springback capacity, and this springback capacity also will concentrate on the part of workpiece attenuation, simultaneously, stress also is concentrated in this part, and therefore this expander mode can cause the increase of workpiece out-of-roundness with unstable.
The utility model content
The purpose of this utility model is at above-mentioned situation, and a kind of accurate expanding die of engaging type that increases cast product circularity is provided.
The purpose of this utility model realizes by following technical proposals:
The accurate expanding die of a kind of engaging type comprises the fan-shaped oblique contract that pieces together column type mutually, and the edge of described fan-shaped oblique contract is intermeshing profile of tooth.
As preferably, described fan-shaped oblique contract is 6-12.
The utility model is used for the mode of the steel pipe that welding back roundness is relatively poor by expander and expands into roundness and manage preferably, the mode of expander is to push away in the push rod place or drop-down by hydraulic press, cause moving up and down of mandrel, thereby fan-shaped oblique contract is expanded outward, the fan-shaped oblique contract of original expanding die is straight type, in the time of expansion, workpiece is very not narrow with the part that fan-shaped oblique contract contacts, in the process of expansion, the zone of workpiece attenuation mainly concentrates on the part that does not contact with fan-shaped oblique contract, so just caused the part of workpiece attenuation very concentrated, after process of expansion finishes, workpiece will have certain springback capacity, this springback capacity also will concentrate on the part of workpiece attenuation, simultaneously, stress also is concentrated in this part, therefore this expander mode can cause the increase of workpiece out-of-roundness with unstable, the utility model changes the fan-shaped oblique contract of original straight type into intermeshing flute profile, in expansion, just do not widened greatly like this, solved the problem that the workpiece weakened region is concentrated with the width of fan-shaped oblique contract contact portion, stress has also disperseed, the thickness of workpiece expansion circle will be more even like this, and circularity also can be better, and stability also can increase.
Description of drawings
Fig. 1 is the front view of expanding die of the prior art.
Fig. 2 is that A-A among Fig. 1 is to view.
Fig. 3 is the front view of embodiment 1.
Fig. 4 is that B-B among Fig. 3 is to view.
Perspective view when Fig. 5 is the utility model work.
1 is fan-shaped oblique contract among the figure, and 2 is the edge of fan-shaped oblique contract, and 3 is the accurate expanding die of engaging type, and 4 is hydraulic press, and 5 is push rod.
The specific embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
As shown in the figure, the accurate expanding die 3 of a kind of engaging type comprises the fan-shaped oblique contract 1 that pieces together column type mutually, and the edge 2 of described fan-shaped oblique contract is intermeshing profile of tooth, and described fan-shaped oblique contract has 8.The utility model will weld the mode of roundness relatively poor steel pipe in back by expander and expand into roundness and manage preferably, the mode of expander is to push away in push rod 5 places or drop-down by hydraulic press 4, cause moving up and down of mandrel, thereby 8 fan-shaped oblique contracts 1 are expanded outward, the fan-shaped oblique contract of original expanding die is straight type, in the time of expansion, workpiece is very not narrow with the part that fan-shaped oblique contract contacts, in the process of expansion, the zone of workpiece attenuation mainly concentrates on the part that does not contact with fan-shaped oblique contract, so just caused the part of workpiece attenuation very concentrated, after process of expansion finishes, workpiece will have certain springback capacity, this springback capacity also will concentrate on the part of workpiece attenuation, simultaneously, stress also is concentrated in this part, therefore this expander mode can cause the increase of workpiece out-of-roundness with unstable, the utility model changes the fan-shaped oblique contract of original straight type into intermeshing flute profile, in expansion, just do not widened greatly like this, solved the problem that the workpiece weakened region is concentrated with the width of 8 fan-shaped oblique contract contact portions, stress has also disperseed, the thickness of workpiece expansion circle will be more even like this, and circularity also can be better, and stability also can increase.
Present embodiment is substantially the same manner as Example 1, and difference is: described fan-shaped oblique contract has 6.
Present embodiment is substantially the same manner as Example 1, and difference is: described fan-shaped oblique contract has 12.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. the accurate expanding die of engaging type comprises the fan-shaped oblique contract that pieces together column type mutually, and it is characterized in that: the edge of described fan-shaped oblique contract is intermeshing profile of tooth.
2. the accurate expanding die of engaging type as claimed in claim 1 is characterized in that: described fan-shaped oblique contract is 6-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206756556U CN201969786U (en) | 2010-12-23 | 2010-12-23 | Intermeshing type accurate pipe-expanding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206756556U CN201969786U (en) | 2010-12-23 | 2010-12-23 | Intermeshing type accurate pipe-expanding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201969786U true CN201969786U (en) | 2011-09-14 |
Family
ID=44574893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206756556U Expired - Fee Related CN201969786U (en) | 2010-12-23 | 2010-12-23 | Intermeshing type accurate pipe-expanding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201969786U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001817A (en) * | 2014-06-19 | 2014-08-27 | 湘潭华进科技有限公司 | Expanding die effectively avoiding straight flanges |
| CN104624823A (en) * | 2013-11-14 | 2015-05-20 | 三菱电机株式会社 | Pipe expanding tool, pipe expanding method, cylinder body and compressor |
| CN106345856A (en) * | 2016-10-31 | 2017-01-25 | 苏州市瑞晟制冷设备有限公司 | Pipe expanding shaping device used for small-inner-diameter thick-wall steel pipe |
| CN107511430A (en) * | 2016-06-17 | 2017-12-26 | 无锡市华琳制冷设备有限公司 | A kind of cylinder extension module |
-
2010
- 2010-12-23 CN CN2010206756556U patent/CN201969786U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624823A (en) * | 2013-11-14 | 2015-05-20 | 三菱电机株式会社 | Pipe expanding tool, pipe expanding method, cylinder body and compressor |
| CN104624823B (en) * | 2013-11-14 | 2016-09-28 | 三菱电机株式会社 | Expanding tool, method of expanding, cylinder and compressor |
| CN104001817A (en) * | 2014-06-19 | 2014-08-27 | 湘潭华进科技有限公司 | Expanding die effectively avoiding straight flanges |
| CN107511430A (en) * | 2016-06-17 | 2017-12-26 | 无锡市华琳制冷设备有限公司 | A kind of cylinder extension module |
| CN106345856A (en) * | 2016-10-31 | 2017-01-25 | 苏州市瑞晟制冷设备有限公司 | Pipe expanding shaping device used for small-inner-diameter thick-wall steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |