CN201565528U - Punch head used for secondary chambering - Google Patents
Punch head used for secondary chambering Download PDFInfo
- Publication number
- CN201565528U CN201565528U CN2009201805801U CN200920180580U CN201565528U CN 201565528 U CN201565528 U CN 201565528U CN 2009201805801 U CN2009201805801 U CN 2009201805801U CN 200920180580 U CN200920180580 U CN 200920180580U CN 201565528 U CN201565528 U CN 201565528U
- Authority
- CN
- China
- Prior art keywords
- reaming
- chambering
- drift
- flange
- punch head
- 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.)
- Expired - Fee Related
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- Forging (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
The utility model discloses a punch head used for secondary chambering. The upper end of the punch head is arranged at the lower press head of a hydropress, the side wall of the lower part of the punch head is provided with a primary chambering flange, and the upper part of the primary chambering flange is provided with a secondary chambering flange. The utility model solves the problem that the dimension of the chambering point is unstable because the axial load of the inner sleeve of a workpiece is overlarge caused by the chambering process, thereby reducing waste due to unqualified dimension and increasing the acceptability of the dimension of the chambered product.
Description
Technical field
The utility model belongs to the drift that a kind of reaming is used, and specifically is a kind of secondary reaming drift.
Background technology
In recent years, along with market competition be growing more intense and people to particularly strong of the requirement of the requirement of car load especially comfortableness; And the comfortableness of car load not only requires the optimization of the vibration isolation of engine mounting spare, and the optimization of each subassembly connection vibration isolation of chassis is also very important.And each subassembly connection on chassis all is to connect with lining basically, so the performance requirement of these linings is even more important; The forward mounting upper support that the while chassis is connected with propons, the performance of the forward and backward Flexible Connector that is connected with back axle three kinds of parts such as (usefulness mainly are the hinged of bush type in the market) is also very important.In order to improve the performance of above-mentioned these linings, list carries out undergauge (also claiming reducing) to its external diameter and also will carry out reaming to cover in it simultaneously sometimes; And the forward mounting upper support can only be carried out reaming to cover in it.Carry out reaming by the interior cover to this two series products its performance is greatly improved, especially its endurance quality is greatly improved.The internal diameter size tolerance that overlaps in this series products is tighter simultaneously, and when not adopting later process, this tolerance is easier to guarantee; When adopting chambering process, this tolerance is difficult to guarantee, particularly important of optimizing that chambering process shows.
The utility model content
The purpose of this utility model provides a kind of secondary reaming drift, solve the excessive instable problem that causes the size of reaming place of the interior axial load of cover of workpiece that existing chambering process causes, thereby reduced the waste product that off-dimension causes, improved the qualification rate of the size after the product reaming.
The technical solution of the utility model is as follows:
A kind of secondary reaming drift, the upper end of drift is installed on the push-down head of hydraulic press, and the lower sides of drift has one-level reaming flange, and secondary reaming flange is arranged at the top of described one-level reaming flange.
Suppose that total reaming amount is Δ S, and the stress of establishing one-level reaming bar is P, this stress P is that hydraulic press is intrinsic, and the axial load of cover is F in acting on
1, this F
1For drift act in frictional force on the jacket wall, be not difficult to draw formula 1.:
F
1＝P·ΔS
①
If the I time reaming amount in the secondary reaming is Δ S
I, the stress that acts on secondary reaming bar is P, the axial load of cover is F in acting on
2I, can draw formula 2.:
F
2I＝P·ΔS
I
②
If the II time reaming amount in the secondary reaming is Δ S
II, the stress that acts on secondary reaming bar is P, the axial load of cover is F in acting on
2II, can draw formula 3.:
F
2II＝P·ΔS
II
③
Because, Δ S=Δ S
I+ Δ S
IIAnd Δ S 4.,
I=Δ S
II5., by 5. formula substitution
4. formula:
ΔS
I＝ΔS
II＝ΔS/2
⑥
2. formula of 6. formula substitution:
F
2I＝P·ΔS/2
⑦
7. formula of 1. formula substitution: F
2I=F
1/ 2
In like manner: F
2II=F
1/ 2
Internally overlap axial directed force F when being the secondary reaming
2I=F
2II=F
1/ 2, subdued the axial load of cover in acting on, thereby reduced of the axial deformation of interior cover because of the excessive generation of axial load, reached the size stability of product in the reaming process and very little extreme difference value.Thereby the waste product of having avoided off-dimension to cause has improved the qualification rate after the product reaming.
Drift of the present utility model makes the secondary drift into by traditional one-level drift, by in same stroke, finishing twice reaming, and the internal active force that axially produces of cover of drift when reducing reaming with this twice reaming; Since primary reaming, the axiality of drift and workpiece endoporus when having guaranteed reaming for the second time, and this has just guaranteed the stability of II level drift by cover in the workpiece, thereby is enclosed within the size stability after the reaming in having guaranteed.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, a kind of secondary reaming drift, the upper end of drift 1 is installed on the push-down head of hydraulic press, and the lower sides of drift 1 has one-level reaming flange 2, and secondary reaming flange 3 is arranged at the top of described one-level reaming flange 2.
Concrete production operation step:
The reaming amount of the I time reaming is half of total reaming amount, and the reaming amount of the II time reaming also is half of total reaming amount, and workpiece is of a size of the designing requirement value by reaming place when finishing the II time reaming.Effective working face of the I time reaming this moment is by the height of the interior cover of reaming greater than workpiece to the distance of effective working face of the II time reaming.In the process of reaming as shown in Figure 3, pass when overlapping in the workpiece at the drift of I level, at this moment drift has not had active force on workpiece, but not change be that the axiality of drift and interior cover is constant in the relative radial position of cover in drift and the workpiece, this has just guaranteed the stability of II level drift by cover in the workpiece, during reaming simultaneously the axial load of overlapping in the workpiece is reduced to traditional half, cover axially is unlikely to the product distortion in making, thereby has guaranteed the size stability of cover in the workpiece.And the extreme difference of the interior cover size of this moment is very little.
Claims (1)
1. secondary reaming drift, the upper end of drift is installed on the push-down head of hydraulic press, and the lower sides of drift has one-level reaming flange, it is characterized in that: secondary reaming flange is arranged at the top of described one-level reaming flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201805801U CN201565528U (en) | 2009-11-13 | 2009-11-13 | Punch head used for secondary chambering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201805801U CN201565528U (en) | 2009-11-13 | 2009-11-13 | Punch head used for secondary chambering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201565528U true CN201565528U (en) | 2010-09-01 |
Family
ID=42657810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201805801U Expired - Fee Related CN201565528U (en) | 2009-11-13 | 2009-11-13 | Punch head used for secondary chambering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201565528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348984A (en) * | 2015-10-14 | 2018-07-31 | 哈特伯金属成型机股份公司 | Method and apparatus for producing annular shaped part |
-
2009
- 2009-11-13 CN CN2009201805801U patent/CN201565528U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108348984A (en) * | 2015-10-14 | 2018-07-31 | 哈特伯金属成型机股份公司 | Method and apparatus for producing annular shaped part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: XIA DINGHU |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110124 Address after: 242300 Ningguo economic and Technological Development Zone, Anhui Patentee after: Anhui Zhongding Shock Absorbing Rubber Technology Co., Ltd. Address before: 242300 Ningguo economic and Technological Development Zone, Anhui Co-patentee before: Xia Dinghu Patentee before: Anhui Zhongding Shock Absorbing Rubber Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20131113 |