CN202893851U - Quadrilateral drawing die for precision rectangular pipe semi-finished product working procedure - Google Patents
Quadrilateral drawing die for precision rectangular pipe semi-finished product working procedure Download PDFInfo
- Publication number
- CN202893851U CN202893851U CN 201220398566 CN201220398566U CN202893851U CN 202893851 U CN202893851 U CN 202893851U CN 201220398566 CN201220398566 CN 201220398566 CN 201220398566 U CN201220398566 U CN 201220398566U CN 202893851 U CN202893851 U CN 202893851U
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- finished product
- quadrilateral
- drawing die
- die
- quadrangle
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Abstract
The utility model discloses a quadrilateral drawing die for a precision rectangular pipe semi-finished product working procedure. The quadrilateral drawing die comprises a die sleeve and a drawing die core which is embedded in the die sleeve in an interference fit manner, wherein the middle of the drawing die core is of a die mould cavity structure, the die mould cavity structure comprises a taper section positioned on an inlet, a transition section the middle of which is changed from a round hole to an arc quadrilateral hole, and a sizing section the lower part arc of which is a quadrangle. The quadrilateral drawing die for the precision rectangular pipe semi-finished product working procedure provided by the utility model has the advantages that the structure is simple, the operation is convenient, the quadrilateral drawing die can manufacture a quadrilateral pipe of a semi-finished product working procedure, and the precision of the physical dimension of a drawing rectangular pipe is high in a follow-up drawing molding; and the pipe is not easy to transform, the wall thickness is uniform, the surface smoothness and the surface degree are good, the time and the labor are saved in a molding machining process, and the molding work efficiency is high.
Description
Technical field
The utility model relates to a kind of drawing mould, relates in particular to a kind of quadrangle drawing mould of accurate rectangular tube semi-finished product operation, belongs to rectangular tube moulding accessory technical field.
Background technology
At present, the square-section steel pipe generally adopts the lateral opening mould of the square of straight flange structure, and needs can moulding through some passes of drawing.When carrying out the semi-finished product drawing with this class mould, the straight flange position of steel pipe is because the curvature deformation extent is large, be easy to produce depression and fold when drawing, thereby the product appearance that causes follow-up drawing to go out is of poor quality, Product Precision is low and lumber recovery is low, production efficiency is not good.
The utility model content
The purpose of this utility model is: the quadrangle drawing mould that a kind of accurate rectangular tube semi-finished product operation is provided, make the steel pipe forming of institute's drawing easy, and it is not yielding, the quadrangle drawing mould of the accurate rectangular tube semi-finished product operation that surface smoothness and flatness are good, precision control is high, thus above-mentioned problems of the prior art can effectively be solved.
The purpose of this utility model is to realize by following technical proposals: a kind of quadrangle drawing mould of accurate rectangular tube semi-finished product operation, comprise die sleeve and be inlaid in the interior drawing core rod of cover in the interference mode, the middle part of described drawing core rod is mold cavity structure, and mold cavity structure comprises that the conical section, the middle part that are positioned at import department crossfade into the changeover portion of arc limit quadrilateral hole and the arc limit quadrangle sizing section of bottom from circular port.
As a kind of preferred, described conical section is that tapering is 28 ° ± 1 ° taper seat.
As further preferred, described changeover portion is the die cavity section that the arc limit quadrilateral hole of conical bore and the sizing section of conical section passes through mutually.
As a kind of preferred, the long edge-to-edge of described arc quadrangle sizing section apart is 34 ± 0.2mm, and radius is 35.6 ± 0.2mm; The minor face opposite side apart is 21 ± 0.2mm, and radius is the arc quadrangle of 14.5 ± 0.2mm.
Mould action in the utility model is as follows:
The quadrangle drawing mould of this precision rectangular tube semi-finished product operation is combination die of hard metal article, and overcoat is 45 steel, and inner ring is carbide alloy: YG6A; Its effect is to make the round billet pipe carry out tube reducing through conical section first, then enter changeover portion, the pipe metal is pushed bending, circular pipe section is extruded gradually be bent into and extrudes sharp outline and dimensional accuracy is high, surface roughness is low square surface, pass through again sizing section, pipe section is extruded into the arc quadrangle, and is last, enters sizing section and is drawn into needed transition base tube shape and size; Directly pass through mutually with elliptical aperture and form because cavity structure is conical section, Mould Machining is easy.
Compared with prior art, the beneficial effects of the utility model: the quadrangle drawing mould of the accurate rectangular tube semi-finished product of the utility model operation, it is simple in structure, used easy to operate, and produces the quadrangle pipe of semi-finished product operation through this drawing mould, in follow-up drawing moulding, the rectangular tube appearance and size precision that drawing goes out is high, pipe is not yielding, and wall thickness is even, and surface smoothness and flatness are good, molding process is time saving and energy saving, and the moulding work efficiency is high.
Description of drawings
Fig. 1 is the Facad structure schematic diagram of the quadrangle drawing mould of the accurate rectangular tube semi-finished product of the utility model operation;
Fig. 2 is the side cross-sectional view of the quadrangle drawing mould of the accurate rectangular tube semi-finished product of the utility model operation.
Among the figure: 1-die sleeve, 2-drawing core rod, 3-conical section, 4-changeover portion, 5-sizing section.
The specific embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
Disclosed all features in this specification, or the step in disclosed all methods or the process, except the speciality and/or step of mutual repulsion, all can make up by any way, unless special narration all can be replaced by other equivalences or the alternative features with similar purpose, namely, unless special narration, an embodiment in a series of equivalences of each feature or the similar characteristics.
As shown in Figure 1 and Figure 2, the quadrangle drawing mould of the accurate rectangular tube semi-finished product of the utility model operation, comprise die sleeve 1 and be inlaid in the interior drawing core rod 2 of cover in the interference mode, the middle part of described drawing core rod 2 is mold cavity structure, and mold cavity structure comprises that the conical section 3, the middle part that are positioned at import department crossfade into the changeover portion 4 of arc limit quadrilateral hole and the arc limit quadrangle sizing section 5 of bottom from circular port.
Described conical section 3 is 28 ° ± 1 ° taper seat for tapering; Described changeover portion 4 is for crossfading into the cavity section of arc limit quadrilateral hole from the circular port of conical section 3; The long edge-to-edge of described arc quadrangle sizing section 5 apart is 34 ± 0.2mm, and radius is 35.6 ± 0.2mm; The minor face opposite side apart is 21 ± 0.2mm, and radius is the arc quadrangle of 14.5 ± 0.2mm.
Workflow of the present utility model:
At first, the pinching part of circular welded tube is sent in the hole of quadrangle drawing mould of novel precise rectangular tube semi-finished product operation, the jaw of draw trolley is clamped pinching position, the round billet pipe is pulled through the preformed drawing mould, in this drawing process, the round billet pipe is at the conical section place of preform drawing mould tube reducing, along with entering changeover portion, under positive pressure and gradually unstability and being out of shape, round steel pipe is crushed and changes the sub-elliptical pipe that four limits are circular arcs into, enters subsequently the sizing section of preformed drawing mould, this moment, outer tube surface was extruded into needed transition base tube shape and size, at last, whole pipe is deviate from nib, finishes preformed.
In subsequent handling, the preformed base pipe of empty sinking is added plug drawing through the rectangle drawing die, obtain the rectangular tube of needed dimensional accuracy, surface smoothness and flatness.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. the quadrangle drawing mould of an accurate rectangular tube semi-finished product operation, it is characterized in that: comprise die sleeve (1) and be inlaid in the interior drawing core rod (2) of cover in the interference mode, the middle part of described drawing core rod (2) is mold cavity structure, and mold cavity structure comprises that the conical section (3), the middle part that are positioned at import department crossfade into the changeover portion (4) of arc limit quadrilateral hole and the arc limit quadrangle sizing section (5) of bottom from circular port.
2. the quadrangle drawing mould of accurate rectangular tube semi-finished product operation as claimed in claim 1, it is characterized in that: described conical section (3) is 28 ° ± 1 ° taper seat for tapering.
3. the quadrangle drawing mould of accurate rectangular tube semi-finished product operation as claimed in claim 2 is characterized in that: described changeover portion (4) is for crossfading into the cavity section of arc limit quadrilateral hole from the circular port of conical section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398566 CN202893851U (en) | 2012-08-13 | 2012-08-13 | Quadrilateral drawing die for precision rectangular pipe semi-finished product working procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220398566 CN202893851U (en) | 2012-08-13 | 2012-08-13 | Quadrilateral drawing die for precision rectangular pipe semi-finished product working procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202893851U true CN202893851U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220398566 Expired - Fee Related CN202893851U (en) | 2012-08-13 | 2012-08-13 | Quadrilateral drawing die for precision rectangular pipe semi-finished product working procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202893851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307899A (en) * | 2014-11-13 | 2015-01-28 | 重庆龙煜精密铜管有限公司 | Process for machining special pipe |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
-
2012
- 2012-08-13 CN CN 201220398566 patent/CN202893851U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307899A (en) * | 2014-11-13 | 2015-01-28 | 重庆龙煜精密铜管有限公司 | Process for machining special pipe |
| CN107900124A (en) * | 2017-12-29 | 2018-04-13 | 重庆龙煜精密铜管有限公司 | Stretch external mold and again die drawing stretching process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |