CN1739878A - On-line cold bending steel cutting mold and its cutting method - Google Patents
On-line cold bending steel cutting mold and its cutting method Download PDFInfo
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- CN1739878A CN1739878A CN 200510086501 CN200510086501A CN1739878A CN 1739878 A CN1739878 A CN 1739878A CN 200510086501 CN200510086501 CN 200510086501 CN 200510086501 A CN200510086501 A CN 200510086501A CN 1739878 A CN1739878 A CN 1739878A
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Abstract
The present invention provides on-line cold bent steel cutting mold and cutting method, and belongs to the field of plastic forming technology for metal. The upper and lower cutting molds are guided with guide column and guide sleeve, the male cutting mold is fixed onto the upper mold seat with the upper mold fixing board, and the female cutting mold is fixed onto the lower mold seat with the lower mold fixing board. When the cold bent shaped steel runs to the servo bogie, the control system makes the mechanical locating unit insert its locating claw into the pre-punched hole in the shaped steel for the shaped steel and the bogie to move. Then, the hydraulic cylinder drives the upper cutting mold to run downwards to complete cutting before fast returning, the locating claw is withdrawn and the bogie is returned fast under the action of the reset cylinder, to complete one work stroke. The present invention has the advantages of high cutting precision, less deformation, etc.
Description
Technical field
The invention belongs to the metal plastic forming technical field, a kind of online cold-rolled forming section knife edge die and cutting-off method thereof particularly are provided.
Background technology
Shearing device is the important component part of cold-rolled forming section roll-in line unit.When cold-rolled forming section was produced, the method for shaped steel fixed ruler cutting normally adopted the method that flies sawing to cut off, and sectional shape has bigger distortion and burr, and the cut lengths precision is low, and noise is big during sawing, and the servo-actuated stroke is bigger.At present, abroad begun to adopt and on strip, gone out the cut-out pre-punched hole, entered the make-up machine cold bending subsequently, shaped steel has been finished the new technology of fixed ruler cutting thereupon.But when pre-punched hole range curvature shaped region is very near, destroyed the continuity of sheetmetal bending forming, very easily caused the serious distortion of pre-punched hole.This generation of defects mainly is because the punching zone is very approaching with working width, complicated stress, strain variation can occur in Metal Forming Process, and the deformed area of plate is three-dimensional space curved surface.Because the neutral line material outside is stretched, the inboard then is compressed.In the continuous deformation process of material, lateral tensile stress will inevitably cause the change of pre-punched hole shape.This has just proposed the connection problem of design and the pre-punched hole and the cut-out of pre-punched hole.
For realizing the shaped steel fast shut-off, improve the production efficiency of roll-in line unit, realize that the distortion of product section otch is little, no burr needs a kind of new online cold-rolled forming section cutting-off method of invention and cuts off mould.
Summary of the invention
The object of the present invention is to provide a kind of online cold-rolled forming section knife edge die and cutting-off method thereof, realize online cold-rolled forming section fast shut-off, high position precision; The section distortion is little, and die life is long.
Knife edge die of the present invention comprises upper die and lower die two parts, and upper and lower mould adopts guide pillar 5, guide pin bushing 6 modes to lead.Cut off punch 4 and be fixed on the upper bolster 8, cut off the punch cutting edge and be designed to centrosymmetric, every side edge mouth and intersect by R10 and R17.5 and form (as shown in Figure 3) by upper mould fixed plate 7; Die 3 is fixed on the die shoe 1 by counterdie fixed head 2, and die 3 is made up of mold insert 9 and mold insert 10 (see figure 4)s, so that sharpening and maintenance.
Realize that online cold-rolled forming section cut-out system comprises: pre-punched hole and servo-actuated dolly, reset cylinder, mechanical positioner, photoelectric sensor switch, control system, hydraulic cylinder and knife edge die.When cold-rolled forming section moves to the servo-actuated dolly, the signal that control system is sent according to photoelectric sensor switch, the locating detent of mechanical positioner is inserted in the pre-punched hole of cold-rolled forming section, cold-rolled forming section drive dolly moves together like this, hydraulic cylinder is according to the signal of control system thereupon, it is descending to drive the cut-out patrix, after finishing cut-out, the patrix fast return, locating detent is extracted from the pre-punched hole of cold-rolled forming section, then the servo-actuated dolly under the effect of reset cylinder, fast return, thereby finish an impulse stroke, begin then to move next time.Can on continuous processing line, finish fast shut-off like this.
For realizing above-mentioned online cold-rolled forming section fast shut-off, at first the key issue that must solve is the design (see figure 1) of pre-punched hole, need consider two problems when intensity when promptly the length dimension that its size and location are designed pre-punched hole need be considered moulding, the Position Design of pre-punched hole: the one, should avoid the deformed area of roll-forming operation subsequently; The 2nd, consider product crosssection shape, section generation gross distortion when avoiding cutting off, 4 pre-punched holes are centrosymmetric.The effect one of pre-punched hole is to be photoelectric sensor switch triggering signal usefulness, the 2nd, cross section deformation when preventing to cut off.The width dimensions of pre-punched hole is 7mm, and the thickness that cuts off punch is 6mm, and gross distortion can take place section when preventing to cut off, and causes product rejection; The length dimension of pre-punched hole is respectively 35mm, 40mm.
For realizing online cold-rolled forming section fast shut-off, the accurate location when another key issue that will solve is cut-out.When cold-rolled forming section moves to the servo-actuated dolly, make photoelectric sensor switch send signal towards fabrication hole in advance to give control system on it, the locating detent of control system control mechanical positioner inserts in the pre-punched hole of cold-rolled forming section then, thereby realizes accurately location.
The invention has the advantages that: shaped steel fixed ruler cutting precision height, the section distortion is little, no burr, noise is little, and die life is long.
Description of drawings
Fig. 1 is the schematic diagram that pre-punched hole of the present invention is arranged.
Fig. 2 is the front view of knife edge die of the present invention.Wherein, die shoe 1, counterdie fixed head 2, die 3, cut-out punch 4, guide pillar 5, guide pin bushing 6, upper mould fixed plate 7, upper bolster 8.
Fig. 3 is the structural representation of cut-out punch of the present invention.
Fig. 4 is the left view of knife edge die of the present invention.
The specific embodiment
Online cold-rolled forming section cutting-off method is made up of pre-punched hole and servo-actuated dolly, reset cylinder, mechanical positioner, photoelectric sensor switch, control system, hydraulic cylinder and knife edge die etc.When the hurdle stake moves to the servo-actuated dolly, the signal that control system is sent according to photoelectric sensor switch, the locating detent of mechanical positioner is inserted in the pre-punched hole of shaped steel, shaped steel drive dolly moves together like this, hydraulic cylinder is according to the signal of control system thereupon, it is descending to drive the cut-out patrix, after finishing cut-out, the patrix fast return, locating detent is extracted from the pre-punched hole of cold-rolled forming section, servo-actuated dolly fast return under the effect of reset cylinder then, thus an impulse stroke finished, begin then to move next time.
Knife edge die comprises upper die and lower die two parts, and upper and lower mould adopts guide pillar 5, guide pin bushing 6 modes to lead.Cut off punch 4 and be fixed on the upper bolster 8, cut off the punch cutting edge and be designed to centrosymmetric, every side edge mouth and intersect by R10mm and R17.5mm and form, as shown in Figure 3 by upper mould fixed plate plate 7; Die 3 is fixed on the die shoe 1 by counterdie fixed head 2, and die 3 is made up of mold insert 9 and mold insert 10 (see figure 4)s, so that sharpening and maintenance.
Claims (4)
1, a kind of online cold-rolled forming section knife edge die, it is characterized in that: knife edge die comprises upper die and lower die two parts, upper and lower mould adopts guide pillar (5), guide pin bushing (6) mode to lead; Cut off punch (4) and be fixed on the upper bolster (8), cut off the punch cutting edge and be designed to centrosymmetric, its cutting edge by R10 and R17.5 is crossing forms by upper mould fixed plate (7); Die (3) is fixed on the die shoe (1) by counterdie fixed head (2), so that processing and cutting edge grinding.
2, a kind of method that adopts the online cut-out of the described online cold-rolled forming section knife edge die of claim 1 realizes that online cold-rolled forming section cut-out system comprises: pre-punched hole and servo-actuated dolly, reset cylinder, mechanical positioner, photoelectric sensor switch, control system, hydraulic cylinder and knife edge die; It is characterized in that: when cold-rolled forming section moves to the servo-actuated dolly, the signal that control system is sent according to photoelectric sensor switch, the locating detent of mechanical positioner is inserted in the pre-punched hole of cold-rolled forming section, cold-rolled forming section drive dolly moves together like this, hydraulic cylinder is according to the signal of control system thereupon, it is descending to drive the cut-out patrix, after finishing cut-out, the patrix fast return, locating detent is extracted from the pre-punched hole of cold-rolled forming section, then the servo-actuated dolly under the effect of reset cylinder, fast return, thereby finish an impulse stroke, begin then to move next time.
3, in accordance with the method for claim 2: it is characterized in that: the width dimensions of pre-punched hole is 7mm, and the thickness that cuts off punch is 6mm, and 4 pre-punched holes are centrosymmetric, and the width dimensions of pre-punched hole is 7mm, and the length dimension of pre-punched hole is respectively 35mm, 40mm.
4, in accordance with the method for claim 2: it is characterized in that: when cold-rolled forming section moves to the servo-actuated dolly, make photoelectric sensor switch send signal towards fabrication hole in advance to give control system on it, the locating detent of control system control mechanical positioner inserts in the pre-punched hole of cold-rolled forming section then, thereby realizes accurately location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086501 CN1739878A (en) | 2005-09-23 | 2005-09-23 | On-line cold bending steel cutting mold and its cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086501 CN1739878A (en) | 2005-09-23 | 2005-09-23 | On-line cold bending steel cutting mold and its cutting method |
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| Publication Number | Publication Date |
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| CN1739878A true CN1739878A (en) | 2006-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510086501 Pending CN1739878A (en) | 2005-09-23 | 2005-09-23 | On-line cold bending steel cutting mold and its cutting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825329A (en) * | 2012-09-20 | 2012-12-19 | 上海和达汽车配件有限公司 | On-line cutting method of vehicle door anti-collision pipe after roller forming |
| CN103008440A (en) * | 2013-01-16 | 2013-04-03 | 南车眉山车辆有限公司 | Stamping mold used for cutting section steel |
| CN103425104A (en) * | 2013-08-05 | 2013-12-04 | 潍坊华孚机械科技有限公司 | Method and device for controlling cold-bending forming production line |
| CN103990684A (en) * | 2014-05-30 | 2014-08-20 | 杨永坚 | Punching device for stamping die |
-
2005
- 2005-09-23 CN CN 200510086501 patent/CN1739878A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825329A (en) * | 2012-09-20 | 2012-12-19 | 上海和达汽车配件有限公司 | On-line cutting method of vehicle door anti-collision pipe after roller forming |
| CN102825329B (en) * | 2012-09-20 | 2014-10-01 | 上海和达汽车配件有限公司 | On-line cutting method of vehicle door anti-collision pipe after roller forming |
| CN103008440A (en) * | 2013-01-16 | 2013-04-03 | 南车眉山车辆有限公司 | Stamping mold used for cutting section steel |
| CN103008440B (en) * | 2013-01-16 | 2015-04-29 | 南车眉山车辆有限公司 | Stamping mold used for cutting section steel |
| CN103425104A (en) * | 2013-08-05 | 2013-12-04 | 潍坊华孚机械科技有限公司 | Method and device for controlling cold-bending forming production line |
| CN103990684A (en) * | 2014-05-30 | 2014-08-20 | 杨永坚 | Punching device for stamping die |
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