CN102513422A - Central spindle of pipe bender - Google Patents
Central spindle of pipe bender Download PDFInfo
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- CN102513422A CN102513422A CN2012100086094A CN201210008609A CN102513422A CN 102513422 A CN102513422 A CN 102513422A CN 2012100086094 A CN2012100086094 A CN 2012100086094A CN 201210008609 A CN201210008609 A CN 201210008609A CN 102513422 A CN102513422 A CN 102513422A
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- Bending Of Plates, Rods, And Pipes (AREA)
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Abstract
The invention discloses a central spindle with stronger bending function. The central spindle disclosed by the invention is formed by connecting at least joint bodies in series, a movable body is composed of a ball joint, a ball plug and a retainer ring; the front end of the ball joint is a spherical connecting body, the rear end of the ball joint is a cylinder, the cylinder is provided with a radial hole, the ball plug is embedded with the cylinder, a spherical hole is formed in the middle of an embedded body, the spherical connecting body at the front end of the next ball joint is arranged in the spherical hole and is matched with the spherical hole in a rotating manner; the cylinder part of the ball joint is arranged in an axial hole, the retainer ring is embedded in a groove on the cylinder, and bosses of the retainer ring and the tail end of the cylinder are respectively blocked at the two ends of the axial hole. In the invention, a universal joint matching manner is formed among all the joint bodies, and bending processing capability of the central spindle is stronger. A spherical body and the ball joint are in movable fit, the spherical body in different diameters can be replaced only requiring that the retainer ring is dismounted, thus use efficiency of the movable body is improved.
Description
Technical field
The present invention relates to the mandrel of a kind of bending machine, particularly bending machine.
Background technology
Pipe fitting is in the bending machining process, and the outside of pipe fitting can receive the pulling force influence, thereby produces the phenomenon of elongation of the pipe fitting outside and tube wall attenuate, simultaneously, and the inboard pressurized of pipe fitting.Because the pipe fitting outside and the inboard effect that receives different power, after the pipe fitting bending machining was accomplished, often the circularity of the brake forming section of pipe fitting can be very poor, and the brake forming section that is to say pipe fitting is a flat tube.In order to guarantee the circularity after pipe fitting is processed, all is to add mandrel now in the inside of pipe fitting, guarantee the circularity of bending section when making bending machining as far as possible.At present, common bending machine mandrel can only guarantee the circularity of crooked starting point, can not guarantee the circularity of whole bending section.The equipment that has a Britain Edison Co. to produce has now solved this difficult problem preferably.It mainly is made up of with the mobile that is contained in the spherical surface body spherical surface body, adopts bearing pin to connect between each mobile, and its structure is simpler, and cost is low, has solved the defective that prior art exists basically.But, adopting the bearing pin connected mode between each mobile of this equipment, its bending direction can only be identical with the bearing pin direction of rotation, and therefore, bending machining can only be carried out in two-dimensional space, and its crooked function is limited.Simultaneously, the bearing pin connected mode of employing is a fixed form, to the processing of different tube diameters, need exchange the mandrel of different size for.
Summary of the invention
The purpose of this invention is to provide a kind of bending mandrel with better function.
Technical scheme of the present invention is: formed by at least two joint body serial connections, said joint body comprises spherical surface body and the mobile that is positioned at spherical surface body, and said mobile is made up of ball-joint, bulb stopper and back-up ring; The front end of said ball-joint is a spherical connecting body, and the rear end is a cylinder, and this cylindrical front portion is provided with draw-in groove; Afterbody is provided with boss, and cylinder is provided with radial hole, and bulb stopper is embedded in the radial hole; After bulb stopper and cylinder are chimeric; Form spherical pore in the middle of its chimera, the spherical connecting body of next stage ball-joint front end is arranged in this spherical pore, and cooperates with this spherical pore rotation; The center of said spherical surface body is provided with axis hole, and the barrel portion of ball-joint is arranged in axis hole, and ring washer is embedded in the groove on the cylinder, and the boss of back-up ring and cylinder tail end is stuck in the axis hole two ends, and the external diameter of back-up ring and boss is all greater than the internal diameter of axis hole.
Among the present invention, the spherical connecting body of next stage ball-joint front end is arranged in the spherical pore of upper level ball-joint, and cooperates with this spherical pore rotation.Therefore, formed the fit system of universal joint between each joint body, at different levels all can three degree of freedom rotation, its bending machining ability is stronger.Because spherical surface body is a kind of movable matching relationship with cooperating of ball-joint, as long as pull down just can the change the outfit spherical surface body of different-diameter specification of back-up ring, therefore, saved mobile, improved the service efficiency of mobile.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of ball-joint among the present invention.
Fig. 3 is the structural representation of bulb stopper among the present invention.
Fig. 4 is the structural representation of spherical surface body among the present invention.
Fig. 5 is the structural representation of mobile among the present invention.
Fig. 6 is the STRUCTURE DECOMPOSITION sketch map of Fig. 5.
Fig. 7 is the structural representation of joint body among the present invention.
Fig. 8 is the STRUCTURE DECOMPOSITION sketch map of Fig. 7.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain, but do not constitute any restriction of the present invention.Fig. 1 is a structural representation of the present invention, is formed by at least two joint body serial connections.Fig. 7 and shown in Figure 8, the joint body is made up of with the mobile that is positioned at spherical surface body 4 spherical surface body 4.Fig. 2 is the structural representation of ball-joint 1 among the present invention, and the front end of ball-joint 1 is a spherical connecting body, and the rear end is a cylinder, and this cylindrical front portion is provided with draw-in groove, and afterbody is provided with boss, and cylinder is provided with radial hole.Fig. 3 is the structural representation of bulb stopper 2 among the present invention.Fig. 4 is the structural representation of spherical surface body 4 among the present invention, and the center of spherical surface body 4 is provided with axis hole.Fig. 5 and shown in Figure 6, mobile is made up of ball-joint 1, bulb stopper 2 and back-up ring 3.Bulb stopper 2 is embedded on the ball-joint 1 in the cylindrical radial hole, bulb stopper 2 with cylinder chimeric after, form spherical pore in the middle of its chimera, the spherical connecting body of next stage ball-joint 1 front end is arranged in this spherical pore, and cooperates with this spherical pore rotation.The barrel portion of ball-joint 1 is arranged in the axis hole of spherical surface body 4; Ring washer is embedded in the groove on the cylinder; The boss of back-up ring 3 and cylinder tail end is stuck in the axis hole two ends, and the external diameter of back-up ring 3 and boss can not deviate from ball-joint 1 all greater than the internal diameter of axis hole from axis hole.During installation, with the spherical connecting body of ball-joint 1 front end, on the upper level ball-joint 1 of radially packing in the cylindrical radial hole; Again bulb stopper 2 is embedded in the radial hole; Forms an integral body by ball-joint 1 and bulb stopper 2, the spherical connecting body of upper level ball-joint 1 front end is encased the formation gimbal structure.Above-mentioned mounted assembly integral installation is gone in the axis hole on the spherical surface body 4, and back-up ring 3 is snapped in the groove on the cylinder, at this moment; The boss of cylinder afterbody lays respectively at outside the axis hole two ends on back-up ring 3 and the ball-joint 1, and the external diameter of back-up ring 3 and boss is all greater than the internal diameter of axis hole, therefore; Ball-joint 1 can not be deviate from from the axis hole of spherical surface body 4; Simultaneously, bulb stopper 2 receives the shaft hole inner wall restriction can not be deviate from, and has guaranteed reliability of structure.During work, the present invention is penetrated in the pipe fitting, spherical surface body 4 contacts with pipe fitting inner wall, and circularity is constant when guaranteeing the pipe fitting bending.Because between balls at different levels and the joint is the universal joint fit system, so can carry out the bending machining of three degree of freedom.
Claims (1)
1. the mandrel of a bending machine; Form by at least two joint body serial connections; Said joint body comprises spherical surface body (4) and is positioned at the mobile of spherical surface body (4), it is characterized in that: said mobile is made up of ball-joint (1), bulb stopper (2) and back-up ring (3); The front end of said ball-joint (1) is a spherical connecting body, and the rear end is a cylinder, and this cylindrical front portion is provided with draw-in groove; Afterbody is provided with boss, and cylinder is provided with radial hole, and bulb stopper (2) is embedded in the radial hole; After bulb stopper (2) and cylinder are chimeric; In the middle of its chimera is spherical pore, and the spherical connecting body of next ball-joint (1) front end is arranged in this spherical pore, and cooperates with this spherical pore rotation; The center of said spherical surface body (4) is provided with axis hole; The barrel portion of ball-joint (1) is arranged in axis hole; Ring washer is embedded in the groove on the cylinder, and the boss of back-up ring (3) and cylinder tail end is stuck in the axis hole two ends, and the external diameter of back-up ring (3) and boss is all greater than the internal diameter of axis hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100086094A CN102513422A (en) | 2012-01-12 | 2012-01-12 | Central spindle of pipe bender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100086094A CN102513422A (en) | 2012-01-12 | 2012-01-12 | Central spindle of pipe bender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102513422A true CN102513422A (en) | 2012-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100086094A Pending CN102513422A (en) | 2012-01-12 | 2012-01-12 | Central spindle of pipe bender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102513422A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138569A (en) * | 2017-05-27 | 2017-09-08 | 浙江大学 | The crease-resistant of active synchronization bending splits core bar device |
| CN108405684A (en) * | 2018-02-12 | 2018-08-17 | 浙江大学 | A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device |
| CN110216178A (en) * | 2019-04-19 | 2019-09-10 | 浙江大学 | A kind of slide block type section of ratchet check rotation variable diameter supports mandrel structure entirely |
| CN110405024A (en) * | 2019-08-21 | 2019-11-05 | 浙江金马逊机械有限公司 | A kind of conformal device of metal tube section support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2097854A (en) * | 1981-05-01 | 1982-11-10 | Pressbend Ltd | A ball and socket joint |
| CN101096038A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Multi-stage loose-core for pipe bending machine |
| CN202427777U (en) * | 2012-01-12 | 2012-09-12 | 长治市泽洋锻压机械有限公司 | Core shaft of pipe bender |
-
2012
- 2012-01-12 CN CN2012100086094A patent/CN102513422A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2097854A (en) * | 1981-05-01 | 1982-11-10 | Pressbend Ltd | A ball and socket joint |
| CN101096038A (en) * | 2006-06-28 | 2008-01-02 | 浙江金马逊机械有限公司 | Multi-stage loose-core for pipe bending machine |
| CN202427777U (en) * | 2012-01-12 | 2012-09-12 | 长治市泽洋锻压机械有限公司 | Core shaft of pipe bender |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138569A (en) * | 2017-05-27 | 2017-09-08 | 浙江大学 | The crease-resistant of active synchronization bending splits core bar device |
| CN107138569B (en) * | 2017-05-27 | 2019-07-23 | 浙江大学 | Active synchronization is curved crease-resistant to split core bar device |
| CN108405684A (en) * | 2018-02-12 | 2018-08-17 | 浙江大学 | A kind of non-embedded plug of magnetism spherical crown surface and core rod connecting device |
| CN110216178A (en) * | 2019-04-19 | 2019-09-10 | 浙江大学 | A kind of slide block type section of ratchet check rotation variable diameter supports mandrel structure entirely |
| WO2020211883A1 (en) * | 2019-04-19 | 2020-10-22 | 浙江大学 | Slide block-type cross-section full-support core rod structure having ratchet check rotation diameter change |
| US11364529B2 (en) | 2019-04-19 | 2022-06-21 | Zhejiang University | Variable-diameter full-support mandrel structure with slider-type cross section for preventing reverse rotation of ratchet wheel |
| CN110405024A (en) * | 2019-08-21 | 2019-11-05 | 浙江金马逊机械有限公司 | A kind of conformal device of metal tube section support |
| CN110405024B (en) * | 2019-08-21 | 2020-09-18 | 浙江金马逊机械有限公司 | Metal pipe cross-section supporting shape-preserving device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |