CN109201830B - A method of preventing flange defect occur without bottomless drum shape part spinning process - Google Patents
A method of preventing flange defect occur without bottomless drum shape part spinning process Download PDFInfo
- Publication number
- CN109201830B CN109201830B CN201710546413.3A CN201710546413A CN109201830B CN 109201830 B CN109201830 B CN 109201830B CN 201710546413 A CN201710546413 A CN 201710546413A CN 109201830 B CN109201830 B CN 109201830B
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- China
- Prior art keywords
- blank
- spinning
- shape part
- drum shape
- bottomless drum
- Prior art date
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- 238000009987 spinning Methods 0.000 title claims abstract description 61
- 238000003825 pressing Methods 0.000 claims description 10
- 230000003014 reinforcing Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 17
- 230000001808 coupling Effects 0.000 abstract description 9
- 238000010168 coupling process Methods 0.000 abstract description 9
- 238000005859 coupling reaction Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000452 restraining Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
Abstract
The present invention provides a kind of methods for preventing coupling barrel process from flange defect occur to reserve part blank in the oral area of cylindrical member and be not involved in deformation during the blank to cylindrical member carries out spinning.The present invention is directed to during coupling barrel, the problem of part oral area is easy to appear flange defect, it proposes the axial constraint power for making the region for participating in rotary pressure deformation by two sides in the method that the blank of a small amount of cylindrical member of oral area is not involved in deformation, avoids the occurrence of flange defect.
Description
Technical field
The present invention relates to metal forming technical fields, prevent more particularly to one kind without bottomless drum shape part spinning process
There is the method for flange defect.
Background technique
Spinning is a kind of metal forming method for shaping thin-walled hollow rotary part.It is by works such as spinning rollers
Tool applies pressure to rotary billet, is allowed to generate continuous local plastic deformation and shape.Usually first by metal plate blank
Or preform is clamped on the core model of spinning machine, drives core model and blank to rotate by main shaft, then spinning roller is with certain track
Pressure is applied to blank with rate travel, so that blank is generated continuous, point-by-point plastic deformation, to obtain various shape of generatrix
Hollow rotating body parts.Wherein, shear spinning is the shape for not only changing blank in forming process, size, and significant
The manufacturing process of its wall thickness is thinned.Shear spinning is usually used in the shear spinning of plate blank, the positive spinning with bottomless drum shape blank,
Without the flow forming of bottomless drum shape blank.
To obtain high performance large-size thin-walled cylinder body part, roll bending welding procedure is replaced using reversed rotary pressure technology.Such as Fig. 1
It is shown, for without bottomless drum shape part the high-precision processing of cylinder can be completed, simultaneously because instead using reversed mould pressing
The length of cylinder part can be greater than die length when to spinning, and barrel lenght not limited by die length, use discharge ring
Cylinder can be realized with main axis in straightforward procedure, therefore generallys use reversed spin-on process without the forming of the cylinder at bottom.Reversely
In spin-forming procedure, since only the restraining force by un-deformed area, the other end lack constraint, lead to mouth part oral area material
Portion, which is easy flaring, leads to flange.With the continuation of mould pressing, subsequent blank receiving un-deformed area and deformed region are simultaneously
Constraint, forming process are stably and controllable.
Flange is the thin-wall tube-shaped element spinning process certainty problem, and flange causes part finish dimensional overproof, usually
Using there are enough machining allowance, overproof part is cut off, and flange is an Instability, each parts flanged-edge is to size
The influence of precision is inconsistent, needs to increase the size of machining allowance with this, reduces the stock utilization of mould pressing.
It is shaped by multi-pass spinning, material is rolled repeatedly under conditions of lacking constraint, causes flange serious
Even there is flange, influences the forming of subsequent spinning, can just continue mould pressing after needing to cut off flange position, reduce
Forming efficiency.The material poor for plasticity, the appearance of flange defect easily cause oral area and crack, and lead to the part report
It is useless.
Summary of the invention
For the problem that being easy to appear flange defect in part oral area, the present invention is proposed without bottomless drum shape part spinning process
A method of it preventing flange defect occur without bottomless drum shape part spinning process, is not involved in change in a small amount of blank of part oral area
Shape makes axial constraint power of the region for participating in rotary pressure deformation by two sides, avoids the occurrence of flange defect.
Prevent the method for flange defect occur without bottomless drum shape part spinning process the present invention provides a kind of, to the bottom of without
During the blank of cylindrical member carries out spinning, part blank is reserved in the oral area without bottomless drum shape part and is not involved in deformation.
Further, reinforcing rib is set on the part blank that the oral area without bottomless drum shape part is not involved in deformation.
Further, in reversed mould pressing, specific steps are as follows: the position for adjusting spinning roller makes the radial position of spinning roller
Greater than the maximum radius of blank；Spinning roller carries out axial feed, and the distance of one section of setting is moved forward from the processing starting point of blank；
Start main shaft, blank is circumferentially rotated with main shaft, and spinning roller radial feed presses to the amount of feeding to setting；Spinning roller carry out it is axial into
It gives, carries out mould pressing.
Further, during multi-pass spinning shapes, since intermediate a time, without the mouth of bottomless drum shape part
Portion reserves part blank and is not involved in deformation.
The present invention is for the problem that being easy to appear flange defect in part oral area, mentioning without in bottomless drum shape part spinning process
The method for being not involved in deformation in a small amount of blank of oral area out makes axial constraint power of the region for participating in rotary pressure deformation by two sides, keeps away
Exempt from flange defect occur.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the equipment and machining state schematic diagram of the prior art of the present invention；
Fig. 2 is a kind of step S10 of method for preventing coupling barrel process from flange defect occur of the embodiment of the present invention
Equipment state schematic diagram；
Fig. 3 is a kind of step S20 of method for preventing coupling barrel process from flange defect occur of the embodiment of the present invention
Equipment state schematic diagram；
Fig. 4 is a kind of step S30 of method for preventing coupling barrel process from flange defect occur of the embodiment of the present invention
Equipment state schematic diagram；
Fig. 5 is a kind of step S40 of method for preventing coupling barrel process from flange defect occur of the embodiment of the present invention
Equipment state schematic diagram；
Fig. 6 is a kind of structural schematic diagram of blank with reinforcing rib of the embodiment of the present invention；
Fig. 7 prevents coupling barrel process from the equipment shape of the method for flange defect occur for another of the embodiment of the present invention
State schematic diagram；
Fig. 8 is a kind of flow chart of method for preventing coupling barrel process from flange defect occur of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Prevent the method for flange defect occur without bottomless drum shape part spinning process the present invention provides a kind of, to the bottom of without
During the blank of cylindrical member carries out spinning, part blank is reserved in the oral area without bottomless drum shape part and is not involved in deformation.?
When reversed mould pressing, as shown in figure 8, specific steps are as follows:
Step S10 adjusts the position of spinning roller, is placed in spinning roller except the maximum radius of blank, and equipment state is illustrated at this time
Figure is as shown in Figure 2.
Step S20, spinning roller carry out axial feed, and the distance of one section of setting is moved forward from the processing starting point of blank, this
When equipment status diagram it is as shown in Figure 3.Since the thickness of blank is thinner, it is more easy to appear the defect of flange, meanwhile, with base
Expect the increase of diameter, itself restraining force of blank is deteriorated.The implementation of this patent can with reference table 1 be arranged spinning roller from starting point forward
Mobile distance can reduce when blank diameter is smaller and wall thickness is larger and even cancel the spinning roller amount of moving down.As table 1 is shown
Spinning roller moves forward the value of distance and the corresponding relationship of blank diameter and blank wall thickness from starting point.
1 spinning roller of table moves forward the value unit of distance: mm from starting point
Note: "/" is not need spinning roller forward movement in table.
Step S30, blank are circumferentially rotated with main shaft, and spinning roller radial feed presses to the amount of feeding to setting, this fashionable dress
Standby status diagram is as shown in Figure 4.
Step S40, spinning roller carry out axial feed, carry out mould pressing, equipment state schematic diagram is as shown in Figure 5 at this time.
In the one aspect of the embodiment of the present invention, as shown in fig. 6, being not involved in deformation in the oral area without bottomless drum shape part
Part blank on reinforcing rib is set.During blank base, reinforcing rib is reserved in the open end of blank, reinforcing rib
Thickness can be with reference table 1, and the outer diameter of reinforcing rib can be using the maximum gauge after the roughing of looping mill rolling blank.The setting of reinforcing rib can
To further prevent the generation without flange in bottomless drum shape part process.The present invention is suitable for single spinning roller, double rotary wheel, three spinning rollers
With the generation for preventing flange in more spinning roller spin-forming procedures, with the increase of spinning roller quantity, cylinder spinning process more tends to be steady
It is fixed, the thickness of reinforcing rib can be reduced therewith.
In the one aspect of the embodiment of the present invention, during multi-pass spinning forming, since intermediate a time,
It reserves part blank without the oral area of bottomless drum shape part and is not involved in deformation.Multi-pass spinning forming especially thicker in blank wall thickness
In the process, can be in the processing of several passages of beginning, spinning roller reduces without forward movement or moving distance, this
Sample is conducive to improve the utilization rate of material.
As shown in fig. 7, it may also be possible to apply the invention for the positive spinning process of cylindrical member, with conventional positive spinning process
As shown in Figure 7 rising equally is completed to revolve and stabilization spinning as shown in Figure 7 (b)；In the whole rotation of positive spinning, be not by
Whole cylinder section blanks are formed, but reserve part blank in cylindrical member oral area and be not involved in deformation, as shown in Fig. 7 (c), prevent
Only blank flange.
During the present invention is for the problem that coupling barrel, it is easy to appear flange defect in part oral area, is proposed in mouth
The method that a small amount of blank in portion is not involved in deformation makes axial constraint power of the region for participating in rotary pressure deformation by two sides, avoids the occurrence of
Flange defect.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (3)
1. a kind of prevent the method for flange defect occur without bottomless drum shape part spinning process, which is characterized in that without bottom cylinder
During the blank of shape part carries out reversed spinning, part blank is reserved in the oral area without bottomless drum shape part and is not involved in deformation；
Wherein, in reversed mould pressing, specific steps are as follows:
The position for adjusting spinning roller, is placed in spinning roller except the maximum radius of blank；
Spinning roller carries out axial feed, and the distance of one section of setting is moved forward from the processing starting point of blank；
Start main shaft, blank is circumferentially rotated with main shaft, and spinning roller radial feed presses to the amount of feeding to setting；
Spinning roller carries out axial feed, carries out mould pressing.
2. a kind of as described in claim 1 prevent the method for flange defect, feature occur without bottomless drum shape part spinning process
It is, reinforcing rib is set on the part blank that the oral area without bottomless drum shape part is not involved in deformation.
3. a kind of as described in claim 1 prevent the method for flange defect, feature occur without bottomless drum shape part spinning process
It is, during multi-pass spinning forming, since intermediate a time, reserves part without the oral area of bottomless drum shape part
Blank is not involved in deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546413.3A CN109201830B (en) | 2017-07-06 | 2017-07-06 | A method of preventing flange defect occur without bottomless drum shape part spinning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546413.3A CN109201830B (en) | 2017-07-06 | 2017-07-06 | A method of preventing flange defect occur without bottomless drum shape part spinning process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109201830A CN109201830A (en) | 2019-01-15 |
| CN109201830B true CN109201830B (en) | 2019-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710546413.3A Active CN109201830B (en) | 2017-07-06 | 2017-07-06 | A method of preventing flange defect occur without bottomless drum shape part spinning process |
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| Country | Link |
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| CN (1) | CN109201830B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113245428A (en) * | 2021-06-21 | 2021-08-13 | 西北工业大学 | Oblique rolling type spinning forming method for cylindrical part with inner ribs |
| CN113617915B (en) * | 2021-07-29 | 2022-11-29 | 西北工业大学 | Local loading integral forming method for special-shaped section rib cylindrical part |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10128459A (en) * | 1996-10-21 | 1998-05-19 | Daido Steel Co Ltd | Backward spining method of ring |
| CN202591339U (en) * | 2012-05-11 | 2012-12-12 | 西北工业大学 | Forward direction spinning pressing ring |
| CN102913688B (en) * | 2012-11-02 | 2015-04-01 | 三一汽车制造有限公司 | Concrete pumping device and manufacturing method for delivery pipe |
| DE102014014827A1 (en) * | 2014-10-09 | 2016-04-14 | HENKE Property UG (haftungsbeschränkt) | Coupling hollow shaft of a drive of a rail vehicle and method for its production |
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2017
- 2017-07-06 CN CN201710546413.3A patent/CN109201830B/en active Active
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| Publication number | Publication date |
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| CN109201830A (en) | 2019-01-15 |
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