CN102553991A - Method for punching high bosses on metal sheets and punch utilized in method - Google Patents
Method for punching high bosses on metal sheets and punch utilized in method Download PDFInfo
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- CN102553991A CN102553991A CN2010105996557A CN201010599655A CN102553991A CN 102553991 A CN102553991 A CN 102553991A CN 2010105996557 A CN2010105996557 A CN 2010105996557A CN 201010599655 A CN201010599655 A CN 201010599655A CN 102553991 A CN102553991 A CN 102553991A
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Abstract
The invention discloses a method for punching high bosses on metal sheets, which includes steps of forming bosses, drawing bosses, stacking and filling, and shaping and setting, and particularly includes squeezing a forming region of a base metal sheet to form a projection region, drawing the projection region to the projection direction, squeezing and stacking metal materials in a material refilling region around the forming region of the base metal sheet to the projection direction simultaneously at the post stage of drawing, enabling the stacked metal materials to flow to the projection region, and then continuously drawing the projection region to reach the set height until forming the required high boss. The punch utilized in the method is provided with a working region having a stepped structure, and material filling is realized by squeezing the end face formed by the stepped structure. The materials around the boss forming region are squeezed by external force to flow to the projection region plastically, namely the materials are filled to the main part of the forming boss, so that the common straight height and strength of the bosses are increased and high bosses can also be punched on thinner base metal sheets and prevented from falling off.
Description
[technical field]
The present invention relates to a kind of punch forming technology of boss, the method and the drift of punching press high boss on particularly a kind of sheet metal.
[background technology]
In the punching press industry, on the sheet metal goods, process boss through regular meeting, these boss are mainly used in assembling and positioning or are used to bear side force, and the moulding boss is widely used especially on accurate sheet metal.As shown in Figure 1; The method of on sheet metal, processing boss at present usually is that the chamfering at drift top is pressed into the sheet metal mother metal; Make the material in its mother metal overflow the hollow boss that forms a pull and stretch on the opposite of mother metal to concave die cavity; Because the thickness of mother metal has determined the height of boss, so the height and the thickness of the boss of existing process moulding are limited.Especially when sheet metal thickness was lower than 1.2mm, owing to there are not enough materials to be squeezed into the head of boss, wanting to reach material thickness at the effectively straight height degree of processing on the sheet metal was very difficult more than 50%.And during existing technology punch process high boss, the limit that reaches material thickness when the boss height can cause material to tear easily, causes boss to come off, and can't locate with it during use, can cause whole component failure.
[summary of the invention]
The objective of the invention is to: improve above-mentioned deficiency of the prior art, the method and the drift of punching press high boss on a kind of sheet metal is provided, this technology can be come the good high boss of punch forming intensity through increasing the material of sheet metal mother metal raising shaping area.
Technical scheme of the present invention is achieved in that
It may further comprise the steps:
A, the protruding shaping: the shaping area of extruding sheet metal mother metal makes the material of shaping area under the effect of drift, swell the formation elevated regions;
B, pull and stretch convexity: drift is towards the direction pull and stretch elevated regions of above-mentioned protuberance;
C, accumulation are filled up: in the later stage of pull and stretch, the metal material that will be positioned at the material additional area of sheet metal mother metal shaping area periphery is simultaneously piled up towards the direction extruding of protuberance, and the metal material of accumulation is mobile to elevated regions, fills up the moulding material requested;
D, plastotype are set: pull and stretch elevated regions to setting height forms high boss;
The method of punching press high boss on the above-mentioned sheet metal, with the more than one reinforcement of part metals material extruding formation of material additional area on the sheet metal mother metal, the reinforcement circular array is provided with;
In the method for punching press high boss, the height of said reinforcement is 1/3～1/2 of a sheet metal mother metal thickness on the above-mentioned sheet metal.
Realize the drift of punching press high boss method on the above-mentioned sheet metal; Comprise the drift shaft and be located at the workspace that the plunger rod body is used for the punching out boss; Said workspace comprises going up towards body with down towards body of extruding sheet metal mother metal, go up towards body with down towards body for forming the coaxial cylinder of stepped construction; Go up the end that is positioned at drift towards body, down towards the external diameter of body greater than last external diameter towards body, the step end face towards body joins with last sidewall towards body mutually down;
In the drift of above-mentioned punching press high boss, saidly down offer reinforcement on the body and form groove, said reinforcement forms grooved ring shape array and is laid on the step end face;
In the drift of above-mentioned punching press high boss, it is V-shaped groove that said reinforcement forms groove;
In the drift of above-mentioned punching press high boss, said drift shaft with down form hierarchic structure towards body, the external diameter of drift shaft greater than down towards the external diameter of body, the drift shaft be the plane towards the crossing face of the outer wall of body down.
Beneficial effect of the present invention is: the principle of utilizing the material extruding to flow material plastic flowing under the external force squeezing action that sheet metal mother metal convex platform shaping area is peripheral arrives elevated regions; Promptly to the main part material for repairing of boss forming; Thereby increase the straight height degree and the intensity of boss, reach the effect that on the sheet metal mother metal of thinner thickness, also can stamp out higher boss; Offer the reinforcement formation groove that circular array is laid at the step end face of drift; Can a plurality of equilibriums of the inner extrusion modling of boss arrange reinforcement; Not only strengthened axial pulling capacity of boss and side force ability to bear, and material is torn the possibility that boss comes off when having prevented that boss is too high.
[description of drawings]
Below in conjunction with detailed description of the drawings concrete structure of the present invention
Fig. 1 is the structural representation of the stamping forming high boss of the present invention
Fig. 2 is the generalized section of A-A direction as shown in Figure 1
Fig. 3 is the perspective view of drift among the present invention
Fig. 4 is the sketch map of punching press high boss on sheet metal
Among the figure: 1, sheet metal mother metal; 11, shaping area; 12, material additional area; 2, boss; 21, elevated regions; 22, reinforcement; 3, drift; 31, go up towards body; 32, down towards body; 33, step end face; 34, reinforcement forms groove; 35, drift shaft; 4, thimble spring; 5, take off the material thimble; 6, cope match-plate pattern; 7, lower bolster; 8, take off the material spring.
[specific embodiment]
The method of the present invention's punching press high boss on sheet metal is that the drift 3 that processes a kind of special use cooperates conventional diel to realize, the step of this method mainly comprises protruding shaping, pull and stretch convexity, piles up to fill up with plastotype and set.Like Fig. 1, Fig. 2 and shown in Figure 3, the shaping area 11 of extruding sheet metal mother metal 1 makes the material of shaping area 11 under the effect of drift 3, swell formation elevated regions 21; Drift 3 is towards the direction pull and stretch elevated regions 21 of above-mentioned protuberance, and elevated regions 21 raises, and its wall thickness is attenuation gradually in drawing process; In the later stage of aforementioned pull and stretch; The metal material that will be positioned at the material additional area 12 of sheet metal mother metal 1 shaping area 11 peripheries is simultaneously piled up towards the direction extruding of protuberance; The metal material of piling up flows to elevated regions 21; Filling up elevated regions 21 because of by the position of pull and stretch attenuation, thereby make elevated regions 21 in the process of continuous drawing, can continue the metal material that adding can keep enough wall thickness; Pull and stretch elevated regions 21 to setting height forms the high boss of according with process requirements.This method of utilizing material extruding flow principles to fill up boss 2 moulding materials can stamp out higher boss 2 on the sheet metal mother metal 1 of thinner thickness.Preferably; When extrded material additional area 12; The part metals material extruding of material additional area 12 on the sheet metal mother metal 1 is formed reinforcement; Stamp out the reinforcement 22 that three to four circular array are provided with in the inboard of boss 2, usually the height of reinforcement 22 be institute's punching press sheet metal mother metal 1 thickness 1/3～1/2.Reinforcement 22 links together the main body of the body of sheet metal mother metal 1 and boss 2, has played the effect that increases boss 2 intensity, even boss 2 fast communications centres have been worn also can not rupture, and this also is that the present invention prevents that boss 2 from being dashed the key that wears off.
As shown in Figure 3, be crucial forming part of the present invention: drift 3.This drift 3 comprises drift shaft 35 and is located at the workspace that drift shaft 35 tops are used for punching out boss 2; Said workspace constitutes towards body 32 with following by pushing going up towards body 31 of sheet metal mother metal 1, and drift shaft 35 is a T shape structure, and the miner diameter end of drift shaft 35 forms hierarchic structures with following towards body 32; The external diameter of drift shaft 35 is greater than following external diameter towards body 32; Drift shaft 35 is the plane with following crossing face towards body 32 outer walls, when carrying out press work, workspace extrded material distortion is only arranged on the drift 3.Drift 3 workspaces go up towards body 31 with down towards body 32 for forming the coaxial cylinder of stepped construction, go up the end that is positioned at drift 3 towards body 31, down towards body 32 last towards between body 31 and the drift shaft 35, upward the top towards body 31 is a circular cone structure.For being implemented in boss 2 forming processes to land area 21 continuous supplementation materials, down must be greater than last external diameter towards body 31 towards the external diameter of body 32, the step end face 33 towards body 32 joins with last sidewall towards body 31 mutually down.On body 32, offering reinforcement formation groove 34 down, in the process of drift 3 extruding boss 2, the part metals material flows into reinforcement and forms the reinforcement 22 that groove 34 forms on the boss 2.Step end face 33 is the crimping section that the material of drift 3 replenishes; In the later stage that boss 2 forms is exactly to lean on step end face 33 extrusion metal materials; Metal is that elevated regions 21 flows to the main part of boss 2 under strong stress effect, has finally formed to have straight height degree and reach sheet thicknesses more than 60%, intensity boss 2 high, that can not come off.Preferably, reinforcement forms groove 34 annular arrays and is laid on the step end face 33, is laid in the inboard of boss 2 to guarantee reinforcement 22 equilibriums.
As shown in Figure 4, be application mould structure of the present invention, this mould mainly comprises mould bases, thimble spring 4, takes off material thimble 5, cope match-plate pattern 6, lower bolster 7, drift 3 and takes off material bullet yellow 8.Use the method for this mould punching press high boss following: sheet material mother metal 1 is placed on the lower bolster 7, and before punching press began, drift 3 contracted in lower bolster 7; When punching press began, cope match-plate pattern 6 is the descending sheet metal mother metal 1 of pushing down under the effect of punch press; Continue when descending, take off material spring 8 and be compressed and upwards lower bolster 7 executed reaction force sheet metal mother metal 1 is tightly pushed down; Punch press continues when descending again; Drift 3 will stretch out in lower bolster 7, and going up of drift 3 at first contacts with sheet metal mother metal 1 towards body 31, the metal material of shaping area 11 will be pressed in the cavity of cope match-plate pattern 6 and form elevated regions 21; The later stage of drift 3 rising pull and stretch elevated regions 21; Step end face 33 towards body 32 contacts the also material additional area 12 of extrusion modling district 11 peripheries with sheet metal mother metal 1 down, and metal material flows to elevated regions 21 under the squeezing action of step end face 33, simultaneously; The part metals material flows into reinforcement and forms the reinforcement 22 that forms in the groove 34 on the boss 2, thereby has formed the boss 2 with high straight height intensity.After moulding finished, upper and lower mould separated, and boss 2 is pushed out cope match-plate pattern 6 at thimble spring 4 with taking off under the effect of expecting thimble 5.
Described above be merely preferred embodiment of the present invention, above-mentioned specific embodiment is not a limitation of the present invention.In technological thought category of the present invention, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, the scope that all belongs to the present invention and protected.
Claims (7)
1. the method for punching press high boss on the sheet metal, it is characterized in that: it may further comprise the steps:
A, the protruding shaping: the shaping area of extruding sheet metal mother metal makes the material of shaping area under the effect of drift, swell the formation elevated regions;
B, pull and stretch convexity: drift is towards the direction pull and stretch elevated regions of above-mentioned protuberance;
C, accumulation are filled up: in the later stage of pull and stretch, the metal material that will be positioned at the material additional area of sheet metal mother metal shaping area periphery is simultaneously piled up towards the direction extruding of protuberance, and the metal material of accumulation is mobile to elevated regions, fills up the moulding material requested;
D, plastotype are set: pull and stretch elevated regions to setting height forms high boss.
2. the method for punching press high boss on the sheet metal according to claim 1 is characterized in that: the part metals material extruding of material additional area on the sheet metal mother metal is formed more than one reinforcement, and the reinforcement circular array is provided with.
3. the method for punching press high boss on the sheet metal according to claim 2 is characterized in that: the height of reinforcement is 1/3～1/2 of a sheet metal mother metal thickness.
4. the employed drift of punching press high boss in the claim 1; It comprises the drift shaft and is located at the workspace that the plunger rod body is used for the punching out boss; It is characterized in that: said workspace comprises going up towards body with down towards body of extruding sheet metal mother metal, go up towards body with down towards body for forming the coaxial cylinder of stepped construction; Go up the end that is positioned at drift towards body, down towards the external diameter of body greater than last external diameter towards body, the step end face towards body joins with last sidewall towards body mutually down.
5. drift according to claim 4 is characterized in that: on body, offer reinforcement formation groove down, said reinforcement forms grooved ring shape array and is laid on the step end face.
6. drift according to claim 5 is characterized in that: it is V-shaped groove that reinforcement forms groove.
7. drift according to claim 4 is characterized in that: the drift shaft with down form hierarchic structure towards body, the external diameter of drift shaft greater than down towards the external diameter of body, the drift shaft be the plane towards the crossing face of the outer wall of body down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010599655.7A CN102553991B (en) | 2010-12-14 | 2010-12-14 | Method for punching high bosses on metal sheets and punch utilized in method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010599655.7A CN102553991B (en) | 2010-12-14 | 2010-12-14 | Method for punching high bosses on metal sheets and punch utilized in method |
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| Publication Number | Publication Date |
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| CN102553991A true CN102553991A (en) | 2012-07-11 |
| CN102553991B CN102553991B (en) | 2015-06-10 |
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| CN201010599655.7A Expired - Fee Related CN102553991B (en) | 2010-12-14 | 2010-12-14 | Method for punching high bosses on metal sheets and punch utilized in method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226821A (en) * | 2014-09-25 | 2014-12-24 | 创美工艺(常熟)有限公司 | Male mold for stamping crack-resistant extrusion lug boss and stamping mold with male mold |
| CN108421868A (en) * | 2018-05-30 | 2018-08-21 | 重庆沐信润喆网络科技有限公司 | A kind of manual plate stamping male means based on camera |
| CN108856479A (en) * | 2018-05-07 | 2018-11-23 | 广东智科精创科技股份有限公司 | The technique of punching press positioning column on a kind of plate |
| CN109622710A (en) * | 2018-12-26 | 2019-04-16 | 湖北航嘉麦格纳座椅系统有限公司 | Stamping equipment, the molding die component of sheath salient point and moulding process |
| CN113600665A (en) * | 2021-07-12 | 2021-11-05 | 苏州春秋电子科技股份有限公司 | Method for forming narrow steps of notebook shell |
Citations (6)
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| US4928375A (en) * | 1984-10-11 | 1990-05-29 | Hadaway Bernard M | Method of forming a hollow fastener from sheet metal |
| DE19613180A1 (en) * | 1996-04-02 | 1997-10-09 | Progress Werk Oberkirch Ag | Flow-pressing of shaped component |
| JP2000176558A (en) * | 1998-12-17 | 2000-06-27 | Topre Corp | Method for press forming of bottomed boss |
| EP1238724A1 (en) * | 2001-03-07 | 2002-09-11 | Fritz Eichenauer GmbH & Co. KG Fabrik elektr. Spezialartikel | Integral rivet for fastening two parts as well as its manufacturing method and device |
| DE102008029515A1 (en) * | 2008-06-21 | 2009-12-31 | Danfoss Compressors Gmbh | Rotor for electrical machine i.e. refrigerant compressor drive motor, has body and multiple permanent magnets that are arranged at circumference of body, where body is manufactured from sheet metal and forms hollow body |
| CN202028679U (en) * | 2010-12-14 | 2011-11-09 | 深圳亿和模具制造有限公司 | Punch for stamping high boss on plate metal |
-
2010
- 2010-12-14 CN CN201010599655.7A patent/CN102553991B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4928375A (en) * | 1984-10-11 | 1990-05-29 | Hadaway Bernard M | Method of forming a hollow fastener from sheet metal |
| DE19613180A1 (en) * | 1996-04-02 | 1997-10-09 | Progress Werk Oberkirch Ag | Flow-pressing of shaped component |
| JP2000176558A (en) * | 1998-12-17 | 2000-06-27 | Topre Corp | Method for press forming of bottomed boss |
| EP1238724A1 (en) * | 2001-03-07 | 2002-09-11 | Fritz Eichenauer GmbH & Co. KG Fabrik elektr. Spezialartikel | Integral rivet for fastening two parts as well as its manufacturing method and device |
| DE102008029515A1 (en) * | 2008-06-21 | 2009-12-31 | Danfoss Compressors Gmbh | Rotor for electrical machine i.e. refrigerant compressor drive motor, has body and multiple permanent magnets that are arranged at circumference of body, where body is manufactured from sheet metal and forms hollow body |
| CN202028679U (en) * | 2010-12-14 | 2011-11-09 | 深圳亿和模具制造有限公司 | Punch for stamping high boss on plate metal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226821A (en) * | 2014-09-25 | 2014-12-24 | 创美工艺(常熟)有限公司 | Male mold for stamping crack-resistant extrusion lug boss and stamping mold with male mold |
| CN108856479A (en) * | 2018-05-07 | 2018-11-23 | 广东智科精创科技股份有限公司 | The technique of punching press positioning column on a kind of plate |
| CN108421868A (en) * | 2018-05-30 | 2018-08-21 | 重庆沐信润喆网络科技有限公司 | A kind of manual plate stamping male means based on camera |
| CN109622710A (en) * | 2018-12-26 | 2019-04-16 | 湖北航嘉麦格纳座椅系统有限公司 | Stamping equipment, the molding die component of sheath salient point and moulding process |
| CN113600665A (en) * | 2021-07-12 | 2021-11-05 | 苏州春秋电子科技股份有限公司 | Method for forming narrow steps of notebook shell |
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| Publication number | Publication date |
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| CN102553991B (en) | 2015-06-10 |
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