CN102896231B - Inner wall forming spinning piece core die and unloading method thereof - Google Patents
Inner wall forming spinning piece core die and unloading method thereof Download PDFInfo
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- CN102896231B CN102896231B CN201210455349.5A CN201210455349A CN102896231B CN 102896231 B CN102896231 B CN 102896231B CN 201210455349 A CN201210455349 A CN 201210455349A CN 102896231 B CN102896231 B CN 102896231B
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Abstract
The invention provides an inner wall forming spinning piece core die and an unloading method of the inner wall forming spinning piece core die. Single axial movement of an ejection cylinder of a spinning machine is decomposed into radial and axial bidirectional movement through a wedge surface mechanism; axial and radial pushing effects of the wedge surface firstly drive two corresponding petal dies to move in an axial direction and retract in a radial direction, so as to generate a gap between inclined planes of the petal dies; the radial retraction can be realized under the continuous effect of the other two petal dies on the wedge surface, so as to realize the automatic unloading of a work piece; and a combined core die automatically resets under the effect of self gravity along with the retraction of the ejection cylinder. The unloading method disclosed by the invention in simple to operate and high in work efficiency; no special requirements on a main shaft structure of a main engine exist, a die mechanism is simple and the service life is long; dynamic and static technology indexes of a work piece are good; large-batch work is easy to realize; the cost is low; and the benefits are obvious.
Description
Technical field
The present invention relates to a kind of inner wall forming spinning part core and move back discharging method, belonging to mould pressing field, being applicable to automatically moving back after inner wall forming workpiece spinning and unloading.
Background technology
For the revolving body spinning part that inwall amorphism requires, after outer surface mould pressing, workpiece can move back from core very easily and unload.But to the spinning part that the tangible shape of inwall requires, at present both at home and abroad main two kinds move back and unload workpiece method:
1. core suitably reduced and make core axis deviation spinning machine spindle axis.Like this in spin-forming procedure, workpiece and core only keep linear contact, and make workpiece and core form comparatively wide arc gap at reverse symmetry position.Undertaken moving back unloading by spinning machine liftout tank after utilizing this gap just can realize workpiece mould pressing.The moving back of this method is unloaded efficient and convenient.But require higher to main frame, must an eccentric shaft be set on spinning machine main shaft again.For overcoming the angular velocity difference that core and workpiece produce when rotated, also on core, bearing to be installed.So comparative structure is complicated.During this external spinning, core and workpiece are not that face contacts and bearing capacity is more weak, therefore to flow formed part beat and the Static and dynamic precision index such as circularity has certain influence.
2. core is formed by the several piece edge structure that differs in size.Workpiece and core are together taken off after mould pressing, then twitch wherein a certain insert, core can disintegrate and be separated with workpiece.Then insert of disintegrating is put on seat in the plane again and also reorganize recovery core, enter next working cycles.The real core spinning process of the spinning process of this method and entirety is basically identical, and core bearing capacity is strong, and effectively can ensure the Static and dynamic precision index of workpiece.But operating process is loaded down with trivial details, inefficiency.Especially, in the repeated disassembled and assembled core process of operation in enormous quantities, be easy to damage combination die, affect work piece inner surface quality.
Patent 2008200715945 discloses a kind of section separating mould for composite stiffening rib barrel-shaped parts, sliced core front end snap ring and rear end snap ring coordinate with central support shaft, locked by round nut, when dismantling after processing workpiece, unclamp round nut, unload lower shaft terminal pad, with dismounting jackscrew by front end dismounting top wire hole and rear end dismounting top wire hole, unload lower front end snap ring and rear end snap ring respectively, segmental mandrel comes off, and workpiece can take off.Its advantage is the drawing requirement index that can reach part.But operating process is loaded down with trivial details, inefficiency.
In sum, with regard to inner wall forming spinning part, two kinds of existing mould pressings move back discharging method and there is some problems all in various degree.
Summary of the invention
The object of the invention is to solve above-mentioned existing mould pressing and move back discharging method Problems existing and deficiency, for inner wall forming spinning part, propose one and be applicable to inner wall forming spinning part and automatically move back and unload composite core formwork, and a kind of brand-new workpiece moves back discharging method.
The present invention is achieved through the following technical solutions:
One is applicable to inner wall forming spinning part and automatically moves back and unload composite core formwork: comprise four shapes and height value corresponding between two and have identical inclined-plane voussoir, to be divided into four block sizes lobe mould corresponding between two through two oblique lines, a mandrel and one has the bed die (legend 4) that cross recess can insert four voussoirs.Wherein voussoir and lobe mould are integrated with bolted, set gradually pallet and four push rods below voussoir.
Wherein, arbitrary voussoir is identical with relative wedge height, different from adjacent wedge height.
Wherein, counterdie arranges cross recess, and four of cross recess outer rim places are that inclined-plane is arranged.The inclined-plane at outer rim place matches with the inclined-plane of lobe mould.
Further, identical, the equal highly between two voussoir of four shapes is set respectively in counterdie cross recess, and the inclined-plane in the inclined-plane of voussoir and counterdie cross recess is consistent.
The step mandrel that top is the conical surface is set, and its tapering and lobe mould tapering are consistent.
Be applicable to inner wall forming spinning part automatically move back unload composite core formwork move back a discharging method, utilize the single axial of spinning machine liftout tank to move, make split core realize radial and axial way moving by the decomposition on composite core formwork voussoir inclined-plane; The decomposition of voussoir inclined-plane to monodisplacement makes with it corresponding lobe mould produce displacement vertically and radial retraction, and then realizes automatically moving back of workpiece and unload.Along with the retraction of liftout tank, composite core formwork playbacks voluntarily under deadweight with the effect associating part.
To the overall core of inner cone centre bore be had, to be divided into four between two corresponding lobe moulds, and four lobe moulds respectively with four voussoirs with bolted integral (legend 4).
Core of the present invention is the contraction gradually by composite core mould, realizes automatically moving back of workpiece and unloads.Its principle is: utilize the single axial of lathe liftout tank to move, and by being arranged on the inclined-plane decomposition of four voussoirs in counterdie cross recess, makes the lobe mould be connected with voussoir realize radial and axial way moving.Wherein first two pieces of higher voussoirs accept the election effect of push rod by pallet, make lobe mould displacement vertically corresponding with it and radial retraction, cause between lobe mould inclined-plane and produce gap, the voussoir of another two pieces lower and lobe mould corresponding with it produce radial retraction too under the effect of push rod subsequently.Automatically moving back of workpiece can be completed after four pieces of lobe moulds priority retraction certain displacement to unload.Gradually the retraction distance of lobe mould, depends on the height difference of two groups of mobile voussoirs of priority.Along with returning of liftout tank, composite core formwork playbacks voluntarily under deadweight with the effect of contraction associating part, enters next working cycles.
The mould of inner wall forming spinning part comprises spinning roller, upper die and lower die three part assembly.The present invention does not relate to spinning roller and upper mould assembly, all explanations and description and be only limitted to lower mould assembly.Lower mould assembly generally comprises several parts such as die holder, counterdie, composite core formwork.About the key element of the structure composite core formwork of the present invention of counterdie, lobe mould, voussoir and pallet and push rod in legend 4.It is emphasized that, the equal lower main axis inside of spinning lathe is provided with to be exclusively used in move back unloads the liftout tank mechanism that workpiece has single direction stroke, the present invention just make use of this simple functions of lathe dexterously, by the composite core formwork of particular design, inner wall forming workpiece moving back after spinning completes is unloaded and becomes simple and fast.And manufacturing and designing of composite core formwork did not both significantly increase cost, also without the need to making any change to lathe or adjusting.
The present invention has following technique effect:
By the single-way moving that lathe material returned liftout tank provides, utilize the wedge surface decomposition of voussoir in cross recess, realize the contraction gradually of composite core formwork and utilize deadweight playback to restore.The feature that the present invention moves back discharging method than existing inner wall forming spinning part is: easy and simple to handle, operating efficiency is high; To main frame main axle structure without particular/special requirement, mould structure is simple, long service life; Workpiece dynamic and static state technical indicator is good; Be applicable to operation in enormous quantities; With low cost, remarkable benefit.
Accompanying drawing explanation
Fig. 1 typical case inner wall forming spinning part schematic diagram;
Fig. 2 is that the present invention illustrates the supination view of workpiece;
Fig. 3 is that the present invention illustrates that moving back of workpiece unloads view;
Fig. 4 is the decomposing schematic representation of the present invention one composite core formwork;
Fig. 5 is the overall schematic (with the counterdie difference to some extent of Fig. 4 example) of the present invention one composite core formwork;
Wherein, 1 voussoir, 2 mandrels, 3 lobe moulds, 4 counterdies, 5 pallets, 6 push rods.
Detailed description of the invention
Below in conjunction with instantiation to the detailed description of the invention.
General inner wall forming part is shown in Fig. 1.Now with inner wall forming typical case spinning part, the flow formed part that just the present invention proposes moves back discharging method and is explained.
Fig. 4 is the decomposing schematic representation of a kind of composite core formwork of the present invention; Fig. 5 is the overall schematic of a kind of composite core formwork of the present invention.
After workpiece completes spinning (Fig. 2), lathe liftout tank is up, promotes push rod 6, pallet 5, two higher voussoirs 1 successively, because voussoir inclined-plane is to the decomposition of single displacement, makes two corresponding lobe moulds 3 produce radial retraction.At this moment workpiece is still embedded on two other lobe mould and can't exits, but along with the continuation of taking blame for others up, two other lobe mould 3 also can produce retraction based on same principle.Because the composite core mould be made up of four lobe moulds all realizes radial retraction, workpiece and core are departed from, thus achieves moving back of workpiece and unload (Fig. 3).Along with the retraction of lathe liftout tank, composite core formwork playbacks voluntarily under deadweight with the effect associating part, and the spinning entering next workpiece unloads circulation with moving back.
Composite core formwork is by identical voussoir and lobe mould corresponding between two form between two.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all embodiments.Every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (3)
1. one kind is applicable to inner wall forming spinning part core, comprise four shapes and height value corresponding between two and there is the voussoir on identical inclined-plane, the lobe mould that four block sizes are corresponding between two, a mandrel and one has the counterdie that cross recess can insert four voussoirs, wherein voussoir and lobe mould are fastened as a whole, and set gradually pallet and four push rods below voussoir;
Four outer rim places of the cross recess that counterdie is arranged are that inclined-plane is arranged;
In counterdie cross recess, arrange identical, the equal highly between two voussoir of four shapes respectively, and the inclined-plane in the inclined-plane of voussoir and counterdie cross recess is consistent, arbitrary voussoir is identical with relative wedge height, different from adjacent wedge height;
The step mandrel of described mandrel to be top the be conical surface, and its tapering and lobe mould tapering are consistent.
2. core according to claim 1, it is characterized in that: the preparation method of lobe mould to have the overall core of inner cone centre bore, be divided into four corresponding between two lobe moulds with two oblique lines, and four lobe moulds are integral with bolted with four voussoirs respectively.
3. according to claim 1 be applicable to inner wall forming spinning part core move back discharging method, utilize the single axial of spinning machine liftout tank to move, make core realize radial and axial way moving by the decomposition on composite core formwork voussoir inclined-plane;
Concrete steps are as follows: after workpiece completes spinning, and lathe liftout tank is up, promote push rod, pallet, two higher voussoirs successively, because voussoir inclined-plane is to the decomposition of single displacement, make two corresponding lobe moulds produce radial retraction; Workpiece is still embedded on two other lobe mould and can't exits, but along with the continuation of taking blame for others up, two other lobe mould also can produce retraction; Because the composite core mould be made up of four lobe moulds all realizes radial retraction, workpiece and core are departed from, thus achieves moving back of workpiece and unload; Along with the retraction of lathe liftout tank, composite core formwork playbacks voluntarily under deadweight with the effect associating part, and the spinning entering next workpiece unloads circulation with moving back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455349.5A CN102896231B (en) | 2012-11-13 | 2012-11-13 | Inner wall forming spinning piece core die and unloading method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455349.5A CN102896231B (en) | 2012-11-13 | 2012-11-13 | Inner wall forming spinning piece core die and unloading method thereof |
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| Publication Number | Publication Date |
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| CN102896231A CN102896231A (en) | 2013-01-30 |
| CN102896231B true CN102896231B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210455349.5A Expired - Fee Related CN102896231B (en) | 2012-11-13 | 2012-11-13 | Inner wall forming spinning piece core die and unloading method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109676068B (en) * | 2019-01-29 | 2020-08-04 | 上海电机学院 | Roll forging equipment for V L type ball cage inner side parting structure product and forming method thereof |
| CN110052543B (en) * | 2019-05-23 | 2024-02-02 | 无锡艾度科技有限公司 | Rotary riveting equipment for drum bottom of pulsator drum of washing machine and rotary riveting method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201195181Y (en) * | 2008-03-28 | 2009-02-18 | 长春设备工艺研究所 | Section separating mould for composite stiffening rib barrel-shaped parts |
| CN201227673Y (en) * | 2008-01-31 | 2009-04-29 | 西北工业大学 | Shell partition mould convenient to demoulding |
| CN201231287Y (en) * | 2008-05-27 | 2009-05-06 | 西安飞机工业（集团）有限责任公司 | Split type conduit supporting plug |
| CN102248092A (en) * | 2010-05-21 | 2011-11-23 | 宝山钢铁股份有限公司 | Demoulding device for thin-wall deep-drawing part process |
| CN202910183U (en) * | 2012-11-13 | 2013-05-01 | 北京高孚旋压科技有限责任公司 | Inner wall forming spinning part core model |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7874194B2 (en) * | 2007-03-09 | 2011-01-25 | Wilson Tool International Inc. | Die holder technology for metal-fabricating press |
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2012
- 2012-11-13 CN CN201210455349.5A patent/CN102896231B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201227673Y (en) * | 2008-01-31 | 2009-04-29 | 西北工业大学 | Shell partition mould convenient to demoulding |
| CN201195181Y (en) * | 2008-03-28 | 2009-02-18 | 长春设备工艺研究所 | Section separating mould for composite stiffening rib barrel-shaped parts |
| CN201231287Y (en) * | 2008-05-27 | 2009-05-06 | 西安飞机工业（集团）有限责任公司 | Split type conduit supporting plug |
| CN102248092A (en) * | 2010-05-21 | 2011-11-23 | 宝山钢铁股份有限公司 | Demoulding device for thin-wall deep-drawing part process |
| CN202910183U (en) * | 2012-11-13 | 2013-05-01 | 北京高孚旋压科技有限责任公司 | Inner wall forming spinning part core model |
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Granted publication date: 20150722 Termination date: 20171113 |