CN201644627U - Mouldless progressive forming tool - Google Patents
Mouldless progressive forming tool Download PDFInfo
- Publication number
- CN201644627U CN201644627U CN2010201360529U CN201020136052U CN201644627U CN 201644627 U CN201644627 U CN 201644627U CN 2010201360529 U CN2010201360529 U CN 2010201360529U CN 201020136052 U CN201020136052 U CN 201020136052U CN 201644627 U CN201644627 U CN 201644627U
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- mandrel
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- spindle
- tool heads
- installing hole
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Abstract
The utility model relates to a mouldless progressive forming tool, which consists of a tool shaft, a spindle, two spindle sleeves, two bearings, two inner check rings, two tool heads and two outer check rings. The spindle passes through a spindle-mounting hole of one end of the tool shaft, and the middle part of the spindle is matched with the spindle-mounting hole in an interference fit manner. The bearings are respectively mounted on both ends of the spindle, and are matched with the spindle in a transition fit manner. The spindle sleeves are respectively mounted on both ends of the spindle. The inner check rings are respectively positioned on both ends of the spindle. The tool heads are respectively mounted on the bearings of both ends of the spindle, and are positioned by the outer check rings. The maximum vertical distance between the outer round surface of each tool head and the axis of the tool shaft is less than the radius of the inner circular arc of the sidewall of a formed part. The end of the tool shaft, which cooperates with the tool heads, is positioned in an enveloping area defined by the spherical surfaces of the tool heads. The utility model can reduce the friction between the forming tool and a plate and increase the forming precision, and is characterized by simple structure and low cost.
Description
Technical field
The present invention relates to field of machining, specifically is a kind of no mould progressive molding instrument.
Background technology
In traditional panel beating shaping field, the sheet metal part of the complex-curved shape that is shaped need adopt punch and die to form.And often punch and die to manufacture and design the cycle long, the cost height also needs to repair a die repeatedly, so traditional panel beating manufacture method is applicable to production in enormous quantities, and is not suitable for the manufacturing of parts in small batch and new product prototype.In order to reduce manufacturing cost, to shorten the production cycle, just need a kind of mould that do not need, can satisfy again simultaneously and make the manufacturing process that requires.Progressive molding (increment shaping) is a kind of sheet forming method of flexibility, with its can realize mouldless shaping, reduce manufacturing expense, the change path of plate is shaped, CAD/CAE/CAM is integrated and advantage such as plate manufacturing automation, and more and more is subjected to the attention of research institution and manufacturing.
The luxuriant husband in Songyuan City of Japan at first proposes a kind of single-point progressive molding method and based on the building mortion of this method: move away contour with the bar-shaped instrument with sphere front end according to the drip molding shape of cross section, realize the mouldless shaping of plate.Its forming tool is a non-rotary bulb rod in the moving process.Though this forming tool is made simple, tool heads and plate are in the sliding friction state in the forming process, and the surface quality of the back part that is shaped is lower.Afterwards, the luxuriant husband in Songyuan City waited the structure that proposes to add at the head of tool pins a spheroid that freely rotates again.This structure can reduce the friction of tool heads and plate to a certain extent, but owing to be the relation of sliding friction between the spheroid of tool head and the body of tool, so the spheroid of tool head can not rotate in forming process well.
The deficiency of the bar-shaped instrument of bulb that proposes at the luxuriant husband in Songyuan City of Japan, the spring of opening of Hubei Automobile Industry College proposes the forming tool that multiple reducible tool heads and plate rub: be made up of rotary tool body, rolling element and rolling element retainer three parts.A kind of being combined as: rolling element is a ball, and the rolling element retainer that adapts with it has the radially circular hole that described ball is installed above for banded, around the rotary tool body axis in the shape of a spiral asymmetric manner arrange.The forming tool of this combination, manufacturing process complexity, cost height, ball are contained in the circular hole of retainer, can not well rotate.Another kind is combined as: rolling element is a roller, and retainer is a mandrel.Be sliding friction between the roller of this forming tool and the mandrel, frictional force is bigger, influences the rotating effect of roller, and there is the rib of meeting scraping panel surface in the outer surface of this roller in addition, makes the surface quality of drip molding lower.
Summary of the invention
Lower for overcoming surface quality that exist in the prior art or drip molding, perhaps the spheroid of tool heads and the sliding friction between the body of tool have been blocked the tool heads spheroid rotated not smooth deficiency in shapings, the present invention proposes a kind of no mould progressive molding instrument.
Problem to be solved by this invention provides a kind of no mould progressive molding instrument that can improve drip molding surface quality and forming accuracy, and it not only can guarantee drip molding surface quality height, forming accuracy height, and makes simple, with low cost.
The present invention includes tool spindle, mandrel and two axle sleeves, two bearings, two inner shield rings, two tool heads and two outer back-up rings.Mandrel passes the mandrel installing hole of tool spindle one end, and interference engagement between the middle part of mandrel and the mandrel installing hole.Bearing is set in the two ends of mandrel, and interference fits between bearing and the mandrel.Both sides at mandrel are respectively installed with axle sleeve.Inner shield ring lays respectively at the two ends of mandrel.Tool heads is set on the bearing at mandrel two ends, and by outer back-up ring location.The outer round surface of tool heads is to the maximum normal distance of the tool spindle axis inner arc radius less than the drip molding sidewall.Tool spindle and tool heads abutting end are positioned at the formed envelope of the sphere zone of tool heads.
The outer surface of described tool spindle one end is symmetrically distributed with two planes parallel with the axis of tool spindle, and the installing hole of mandrel is arranged on this plane, and the axis normal of this installing hole is in two planes and and the axes intersect of tool spindle.
The mounting groove that inner shield ring is all arranged on the excircle of end, described mandrel two ends.
Described tool heads is the spheroid of large semi-circular, and the radius of tool heads is less than the inner arc radius of drip molding.The installing hole that bearing 4 is arranged on the plane of tool heads.
The installing hole of described bearing is a blind hole; The mounting groove that back-up ring outside the annular is arranged at place, the aperture of installing hole has the groove of taper in this installing hole bottom centre, and the end of inner shield ring and mandrel is positioned at this groove.
Tool spindle of the present invention is in the drive turning down of machine tool chief axis, the outer surface of tool heads is contacted with plate, and the most of zone that is contacted is rolling friction, having only fraction is sliding friction, tool heads 6 hardness height, smooth outer surface in addition, so can reduce the friction between forming tool and plate, thereby improve the surface quality of drip molding.Use the present invention to process plate, two tool heads 6 on the forming tool 8 make the regional area distortion repeatedly and near preformed shape, can reduce the resilience of drip molding, thereby improve forming accuracy, and have simple in structure, the characteristics of low cost of manufacture.
Description of drawings
Accompanying drawing 1 is the schematic diagram of no mould progressive molding instrument.
Accompanying drawing 2 is structural representations of no mould progressive molding instrument.
Accompanying drawing 3 is front views of tool spindle structural representation.
Accompanying drawing 4 is right views of tool spindle structural representation.
Accompanying drawing 5 is structural representations of mandrel.
Accompanying drawing 6 is structural representations of axle sleeve.
Accompanying drawing 7 is front views of tool heads structural representation.
Accompanying drawing 8 is right views of tool heads structural representation.Wherein:
1. tool spindle 2. mandrels 3. axle sleeves 4. bearings 5. inner shield rings 6. tool heads 7. outer back-up rings
The specific embodiment
As shown in Figure 2.Present embodiment provides a kind of no mould progressive molding instrument that can improve drip molding surface quality and forming accuracy.Present embodiment is a symmetrical structure, comprises tool spindle 1, mandrel 2 and two axle sleeves 3, two bearings 4, two inner shield rings 5, two tool heads 6 and two outer back-up rings 7.
Mandrel 2 passes the mandrel installing hole of tool spindle 1 one ends, and interference engagement between the middle part of mandrel 2 and the mandrel installing hole.Pair of bearings 4 all adopts 619/5 moldeed depth ditch ball bearing, is set in the two ends of mandrel 2, and interference fits between bearing 4 and the mandrel 2.In the both sides of mandrel 2, be respectively installed with axle sleeve 3.Realize the axial location of bearing 4 by inner shield ring 5.Two tool heads 6 are set on the bearing 4 at mandrel 2 two ends, and by outer back-up ring 7 location.The outer round surface of tool heads 6 is to the maximum normal distance of the tool spindle 1 axis inner arc radius less than the drip molding sidewall.
Mandrel 2 is circular rod member.The mounting groove that inner shield ring 5 is all arranged on the excircle of end, mandrel 2 two ends.Axle sleeve 3 is a thin wall circular shape, and its internal diameter is with the external diameter of mandrel 2.
Claims (5)
1. no mould progressive molding instrument, comprise tool spindle (1) and tool heads (6), it is characterized in that described no mould progressive molding instrument also comprises mandrel (2) and two axle sleeves (3), two bearings (4), two inner shield rings (5), two tool heads (6) and two outer back-up rings (7); Mandrel (2) passes the mandrel installing hole of tool spindle (1) one end, and interference engagement between the middle part of mandrel (2) and the mandrel installing hole; Bearing (4) is set in the two ends of mandrel (2), and interference fits between bearing (4) and the mandrel (2); Be respectively installed with axle sleeve (3) in the both sides of mandrel (2); Inner shield ring (5) lays respectively at the two ends of mandrel (2); Tool heads (6) is set on the bearing (4) at mandrel (2) two ends, and by outer back-up ring (7) location; The outer round surface of tool heads (6) is to the maximum normal distance of tool spindle (1) the axis inner arc radius less than the drip molding sidewall; Tool spindle (1) and tool heads (6) abutting end are positioned at the formed envelope of the sphere zone of tool heads (6).
2. a kind of according to claim 1 no mould progressive molding instrument, it is characterized in that, the outer surface of described tool spindle (1) one end is symmetrically distributed with two planes parallel with the axis of tool spindle, the installing hole that mandrel (2) are arranged on this plane, and the axis normal of this installing hole is in two planes and and the axes intersect of tool spindle.
3. a kind of according to claim 1 no mould progressive molding instrument is characterized in that, the mounting groove of inner shield ring (5) is all arranged on the excircle of described mandrel (2) end, two ends.
4. a kind of according to claim 1 no mould progressive molding instrument it is characterized in that described tool heads (6) is the spheroid of large semi-circular, and the radius of tool heads (6) is less than the inner arc radius of drip molding; The installing hole that bearing (4) are arranged on the plane of tool heads (6).
5. as a kind of no mould progressive molding instrument as described in the claim 4, it is characterized in that the installing hole of described bearing (4) is a blind hole; The mounting groove that back-up ring (7) outside the annular is arranged at place, the aperture of installing hole has the groove of taper in this installing hole bottom centre, and the end of inner shield ring (5) and mandrel (2) is positioned at this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201360529U CN201644627U (en) | 2010-03-19 | 2010-03-19 | Mouldless progressive forming tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201360529U CN201644627U (en) | 2010-03-19 | 2010-03-19 | Mouldless progressive forming tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201644627U true CN201644627U (en) | 2010-11-24 |
Family
ID=43109825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201360529U Expired - Fee Related CN201644627U (en) | 2010-03-19 | 2010-03-19 | Mouldless progressive forming tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201644627U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008455A (en) * | 2012-12-28 | 2013-04-03 | 江苏大学 | Bidirectional usable tool head for asymptotic shaping |
| CN105964777A (en) * | 2016-05-24 | 2016-09-28 | 北京航空航天大学 | Rotary forming tool for incremental forming |
| CN106271376A (en) * | 2016-09-22 | 2017-01-04 | 西安理工大学 | A kind of rolling tool and the method carrying out the progressive rolling forming in metal blank surface thereof |
| CN106513499A (en) * | 2016-09-20 | 2017-03-22 | 北京航空航天大学 | Rotational molding tool used for incremental molding |
| CN109746300A (en) * | 2019-02-15 | 2019-05-14 | 沈阳航空航天大学 | It is a kind of based on spherical surface spinning roller frustum cylinder combination shape thin-wall part without mould spin-on process |
| CN109746299A (en) * | 2019-02-15 | 2019-05-14 | 沈阳航空航天大学 | A kind of wall thickness such as the truncated cone thin-wall part based on spherical surface spinning roller are without mould spin-on process |
-
2010
- 2010-03-19 CN CN2010201360529U patent/CN201644627U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008455A (en) * | 2012-12-28 | 2013-04-03 | 江苏大学 | Bidirectional usable tool head for asymptotic shaping |
| CN105964777A (en) * | 2016-05-24 | 2016-09-28 | 北京航空航天大学 | Rotary forming tool for incremental forming |
| CN105964777B (en) * | 2016-05-24 | 2018-01-23 | 北京航空航天大学 | A kind of rotation forming tool for progressive molding |
| CN106513499A (en) * | 2016-09-20 | 2017-03-22 | 北京航空航天大学 | Rotational molding tool used for incremental molding |
| CN106271376A (en) * | 2016-09-22 | 2017-01-04 | 西安理工大学 | A kind of rolling tool and the method carrying out the progressive rolling forming in metal blank surface thereof |
| CN109746300A (en) * | 2019-02-15 | 2019-05-14 | 沈阳航空航天大学 | It is a kind of based on spherical surface spinning roller frustum cylinder combination shape thin-wall part without mould spin-on process |
| CN109746299A (en) * | 2019-02-15 | 2019-05-14 | 沈阳航空航天大学 | A kind of wall thickness such as the truncated cone thin-wall part based on spherical surface spinning roller are without mould spin-on process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130319 |