CN1974048A - Press-formed workpiece with an increased corner portion thickness and apparatus and method for manufacture thereof - Google Patents
Press-formed workpiece with an increased corner portion thickness and apparatus and method for manufacture thereof Download PDFInfo
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- CN1974048A CN1974048A CN 200610160786 CN200610160786A CN1974048A CN 1974048 A CN1974048 A CN 1974048A CN 200610160786 CN200610160786 CN 200610160786 CN 200610160786 A CN200610160786 A CN 200610160786A CN 1974048 A CN1974048 A CN 1974048A
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Abstract
The invention relates to a press-formed member having corner portion, press-formed member manufacturing apparatus and press-formed member manufacturing method. The press-formed member includes a first wall with a first thickness, a second wall with a second thickness, and a first corner portion. The first corner portion is disposed between the first and second walls, with the first corner portion having an increased thickness formed by pressure-forming such that the increased thickness of the first corner portion is larger than the first and second thicknesses of the first and second walls adjacent to the first corner portion. In a manufacturing method for the press-formed member, a preliminary body structure to be deformed is provided, and the thickness of the first corner portion of the preliminary body structure is increased by applying pressure to the preliminary body structure.
Description
Technical field
The present invention relates to a kind of have the pressure forming member in bight, a kind of pressure forming method for manufacturing component that is constructed and arranged to make the pressure forming member manufacturing equipment of pressure forming member and is used to make pressure forming member with bight with bight.
Background technology
Opening clear No.63-117606A discloses a kind of traditional pressure forming member that comprises bend (bight), the suspension elements of for example using in vehicle in fact in Japan.Disclosed traditional pressure forming member is by carrying out pressure forming to blank (sheet metal blank) or pressure processing is made in the document.
TOHKEMY No.2003-12260 communique discloses a kind of frame structure, in this frame structure, in order to improve the rigidity of framing component, forms welding melt-coating part (deposit-welded bead portion) on the bight of framing component.
Consider above-mentioned, from the disclosure content, be apparent that for those skilled in the art to have a kind of demand, need a kind of improved manufacture method with manufacturing equipment and a kind of improved pressure forming member of the pressure forming member in bight, a kind of improved pressure forming member.The present invention is devoted to technical these needs and other needs, and those skilled in the art will be well understood to these from the disclosure content.
Summary of the invention
Though the pressure forming method provides good productivity ratio, in the pressure forming process, the thickness of the bend of traditional pressure forming member (bight) will reduce.Therefore, consider that bight thickness reduces in the pressure forming process, in order to ensure the rigidity of pressure forming member, the essential material that adopts the slab blank as the pressure forming member.So in traditional pressure forming method for manufacturing component, the weight of pressure forming member increases, material cost (manufacturing cost) increases.
On the other hand, when improving the rigidity of pressure forming member, the increase of construction weight will be relatively little when adopting welding (for example deposited welding).But welding process is consuming time, so productivity ratio descends and manufacturing cost increases.
The present invention manages to solve the problem that above-mentioned conventional art brings, and an object of the present invention is to provide a kind of pressure forming method for manufacturing component and a kind of pressure forming member manufacturing equipment that can reduce the manufacturing cost and the weight of the pressure forming member that comprises crooked bight that can reduce the manufacturing cost and the weight of the pressure forming member with bight.
In order to achieve the above object, the pressure forming method for manufacturing component comprises the thickness that preform that will be deformed and the bight that increases described preform by described preform is exerted pressure are provided.
According to a further aspect in the invention, pressure forming member manufacturing equipment comprises and thickens device, and it is configured and is arranged to preform is exerted pressure, with the thickness in the bight that increases described preform.
In accordance with a further aspect of the present invention, the pressure forming member comprises the first wall with first thickness, second wall with second thickness and first bight.Described first corner arrangement is between described first wall and described second wall, form described first bight by pressure forming, make the thickness of described increase in described first bight greater than described first thickness and described second thickness of described first wall adjacent and described second wall with described first bight with the thickness that increased.
From the following detailed description of doing with reference to the disclosure of accompanying drawing, the preferred embodiment of the present invention, those skilled in the art will be well understood to these and other purpose, characteristics, aspect and advantage of the present invention.
Description of drawings
Referring now to accompanying drawing, these accompanying drawings have constituted this original disclosed part:
Fig. 1 is the vertical view that comprises the structural member of a plurality of pressure forming members according to first embodiment of the invention;
Fig. 2 is the sectional view according to the pressure forming member of the structural member of first embodiment of the invention along the section line 2-2 among Fig. 1 intercepting;
Fig. 3 is the local amplification sectional view according to the bight of a pressure forming member shown in Figure 2 of first embodiment of the invention;
Fig. 4 is the sectional view according to the pre-forming device of the pressure forming member manufacturing equipment of first embodiment of the invention;
Fig. 5 is the sectional view that thickens device according to the pressure forming member manufacturing equipment with finishing die of first embodiment of the invention;
Fig. 6 is the partial section according to the pre-forming device of the pressure forming member manufacturing equipment of first embodiment of the invention, is illustrated in blank in the preform process and is arranged in workpiece setting (work setting) between the upper die and lower die;
Fig. 7 is the partial section according to the pre-forming device of the pressure forming member manufacturing equipment of first embodiment of the invention, is illustrated in the pressure forming process of carrying out after the workpiece setting is set as shown in Figure 6;
Fig. 8 is the partial section that thickens device according to the pressure forming member manufacturing equipment of first embodiment of the invention, and the incipient stage of the workpiece setting of the process of thickening is shown;
Fig. 9 is the partial section that thickens device according to the pressure forming member manufacturing equipment of first embodiment of the invention, and the ending phase of the workpiece setting of the process of thickening is shown;
Figure 10 is the partial section that thickens device according to the pressure forming member manufacturing equipment of first embodiment of the invention, is illustrated in the pressure forming process that the increase bight thickness that carries out after the workpiece setting is set as shown in Figure 9;
Figure 11 is the local amplification sectional view that thickens device according to first embodiment of the invention, and the bight of pressure forming member is shown;
Figure 12 can use the stereogram of another example that forms the structural member of member according to the pressure of first embodiment of the invention;
Figure 13 can use the stereogram of an example again that forms the structural member of member according to the pressure of first embodiment of the invention;
Figure 14 can use the stereogram of an example again that forms the structural member of member according to the pressure of first embodiment of the invention;
Figure 15 is the partial section that thickens device according to the variation of first embodiment of the invention;
Figure 16 is the partial section that thickens device according to the pressure forming member manufacturing equipment of second embodiment of the invention;
Figure 17 is the partial section that thickens device according to the pressure forming member manufacturing equipment of second embodiment of the invention, and the pressure forming process of the bight thickness that increases the pressure forming member is shown;
Figure 18 is the local amplification sectional view that thickens device according to second embodiment of the invention, and the material that illustrates in the bight of pressure forming member flows;
Figure 19 is the local amplification sectional view that thickens device according to second embodiment of the invention, and the state when finishing the pressure forming process is shown;
Figure 20 is the partial section that thickens device according to the pressure forming member manufacturing equipment of third embodiment of the invention;
Figure 21 is the local amplification sectional view that thickens device according to third embodiment of the invention, and the material that illustrates in the bight of pressure forming member flows;
Figure 22 is the partial section that thickens device according to the pressure forming member manufacturing equipment of fourth embodiment of the invention;
Figure 23 is the local amplification sectional view that thickens device according to fourth embodiment of the invention, and the material that illustrates in the bight of pressure forming member flows.
The specific embodiment
Now with reference to accompanying drawing selected embodiment of the present invention is described.Those skilled in the art will be well understood to from present disclosure, and the following description of the embodiment of the invention for exemplary and propose, is not will limit by claims and their the present invention that content of equal value limited only.
At first referring to figs. 1 through 15 pressure forming member, pressure forming member manufacturing equipment and the pressure forming method for manufacturing component that illustrate according to first embodiment of the invention.
Fig. 1 is the vertical view of structural member (suspension elements 90), and this structural member comprises a pair of pressure forming member 80 and 85 according to first embodiment of the invention.Fig. 2 is along the pressure forming member 80 of the suspension elements 90 of the intercepting of the section line 2-2 among Fig. 1 and 85 sectional view.Fig. 3 is the local amplification sectional view in the bight 82 of pressure forming member 80 shown in Figure 2.
Form each pressure forming member 80 and 85 by the tabular blank of pressure forming (as sheet metal).When adopting traditional pressure forming method for manufacturing component to form the pressure forming member, the bight thickness of pressure forming member reduces, so the rigidity in bight may be not enough.Yet, according to pressure forming method for manufacturing component of the present invention, increase the bight 82 of pressure forming member 80 and 85 and 87 thickness in manufacture process respectively, pressure forming member 80 and 85 rigidity improve and need not significantly to change the cross sectional shape of pressure forming member 80 and 85 thus.Therefore, can controlled pressure formed parts 80 and 85 weight increases and material cost (manufacturing cost) increases, this weight increase and material cost increase are owing to the thickness of considering the bight reduces to adopt the slab blank caused as the material of pressure forming member.In addition, owing to compare with the welding method that adopts sometimes for the rigidity that improves the bight in conventional art, the pressure forming method has good productivity ratio, therefore utilizes the present invention can control the increase of manufacturing cost.
Preferably pressure forming or pressure processing are processed in performed pressure forming among the present invention.In addition, employed blank is preferred for the semi-finished product such as metallic plate that pressure forming prepares among the present invention.
Preferably utilize the pressure forming member manufacturing equipment of first embodiment of the invention to form pressure forming member 80 and 85.Referring now to Figure 4 and 5, illustrate according to the pre-forming device 100 of the pressure forming member manufacturing equipment of first embodiment and thicken device 150.Fig. 4 is the sectional view of pre-forming device 100, and Fig. 5 is the sectional view that thickens device 150.Pre-forming device 100 is configured and is arranged to the tabular blank 10 of pressure forming, comprises the preform 20 (as shown in Figure 5) in crooked bight 22 with formation.Thicken the thickness that device 150 is configured and is arranged to increase the bight 22 of preform 20, to form pressure forming part 80 (or 85).
To and thicken device 150 to pre-forming device 100 is described in more detail.
Pre-forming device 100 shown in Figure 4 is used for bending plate shape blank 10, to form the preform 20 in cap shape cross section substantially that has as Fig. 5 was shown specifically.Preform 20 comprises the bight 22 that connects connecting wall 21 and pair of sidewalls 23.Pre-forming device 100 comprises upper mold portion and lower mold portion, and wherein lower mold portion is arranged in the opposite side of upper mold portion with respect to blank 10.
As shown in Figure 4, the upper mold portion of pre-forming device 100 comprises retainer (holder) 110, drive unit 112, patrix 130 and a upward auxiliary mould (upper assist die) 140.
Retainer 110 keeps or supports patrix 130 and last auxiliary mould 140, wherein also is provided with spring 142.More specifically, spring 142 is arranged between retainer 110 and the last auxiliary mould 140, with auxiliary mould 140 on the resiliency supported.Selectively, pre-forming device 100 can comprise that the structure of employing cushion pins (cushion pin) or press-on pins (pressure pin) substitutes spring 142.
For example, drive unit 112 is fluid pressure drive devices, and this fluid pressure drive device is configured and is arranged to make selectively retainer 110 to move or move away from lower mold portion towards lower mold portion.
Patrix 130 comprises peripheral part 133 and surface, chamber 134.Surface, chamber 134 is arranged to the outline (more specifically, the outline of pressure forming member side) of pressure forming member consistent basically.
Go up auxiliary mould 140 and be arranged to and can slide and comprise the face of exerting pressure 143 of substantially flat at surface, chamber 134 internal freedoms, this face 143 of exerting pressure be configured and be arranged to contact with the first 11 of blank 10.The first 11 of blank 10 is the parts that form the connecting wall 21 of preform 20.
As shown in Figure 4, the lower mold portion of pre-forming device 100 comprises retainer 115, pin 117, bracing or strutting arrangement 118, counterdie 135 and lower punch 145.Retainer 115 supports lower punch 145.
Pin 117 passes retainer 115 and contacts with counterdie 135.For example, bracing or strutting arrangement 118 is fluid pressure drive devices of supporting pin 117 flexibly.Therefore, pin 117 plays the effect of cushion pins or press-on pins.
Counterdie 135 comprises peripheral part 137 and opening 138.
Lower punch 145 is arranged to selectively outstanding from opening 138.Lower punch 145 also comprises the face of exerting pressure 147 that is formed on its end (top among Fig. 4) (preform exert pressure face).The face 147 of exerting pressure is configured and is arranged to contact with the first 11 of blank 10.The face 147 of exerting pressure is formed the inner surface configuration basically identical with preform 20.More specifically, in first embodiment, the face 147 of exerting pressure has protruding (outwards) curved shape as shown in Figure 4.
The first 11 of blank 10 is arranged in the face of the surface 134, chamber of patrix 130 and the opening 138 of counterdie 135.Blank 10 also comprises a pair of second portion 13, and this is arranged in the opposition side of first 11 to second portion 13.As shown in Figure 4, the second portion 13 of blank 10 is arranged to respectively in the face of the peripheral part 133 of patrix 130 and the peripheral part 137 of counterdie 135.The second portion 13 of blank 10 is the parts that form the sidewall 23 of preform 20.
The peripheral part 133 of patrix 130 and the peripheral part 137 of counterdie 135 are configured respectively and are arranged to when the first 11 of blank 10 is bent, the moving of the second portion 13 of guiding blank 10, thus for example prevent the generation of wrinkling.Preferred arrangements distance piece (spacer) 139 between peripheral part 133 and 137.
The upper mold portion of pre-forming device 100 and lower mold portion be configured such that when lower punch 145 when surface, the chamber of patrix 130 134 is outstanding, the gap between lower punch 145 and the surface, chamber 134 is substantially and the consistency of thickness of blank 10.
Lower punch 145 is along outstanding towards the direction (bending direction) on the surface, chamber 134 of patrix 130, thus the first 11 of lower punch 145 extrusion blank spares 10 and make its bending.And along with the outstanding of lower punch 145 moves, upward auxiliary mould 140 moves simultaneously, and retreats along bending direction.The amount of movement of going up auxiliary mould 140 and lower punch 145 size (length) with the second portion 13 of blank 10 basically is consistent.
As mentioned above, to be configured and to be arranged to blank 10 pressure formings be to comprise the preform in crooked bight 22 20 to pre-forming device 100.As shown in Figure 5, preform 20 has the cross sectional shape of cap shape substantially, and it comprises the connecting wall 21 of sidewall 23 and the end that is connected sidewall 23.Bight 22 is arranged between connecting wall 21 and the sidewall 23.Because the face of exerting pressure 147 of lower punch 145 has the convex curvature shape, so as shown in Figure 5, the connecting wall 21 of preform 20 has the convex curvature shape.Depend on for example net shape of pressure forming member (as the shape of pressure forming member 80 or 85), can omit the auxiliary mould 140 of going up of pre-forming device 100.
Then, explanation is thickened device 150 according to the pressure forming member manufacturing equipment of first embodiment.Thicken the thickness that device 150 is configured and is arranged to increase the bight 22 of the preform of making by pre-forming device 100 20.Thicken device 150 and comprise lower mold portion (first thickens mould portion) and upper mold portion (second thickens mould portion), they are configured and are arranged to pressure forming preform 20, make part material in the connecting wall 21 of preform 20 22 flow, to increase the thickness in bight 22 towards the bight.
As shown in Figure 5, the upper mold portion that thickens device 150 comprises retainer 160, drive unit 162, patrix 170, upward auxiliary mould 180 and last punch 190.
Retainer 160 keeps or supports patrix 170, upward auxiliary mould 180 and last punch 190, wherein also is furnished with a pair of spring 182.More specifically, spring 182 is arranged in retainer 160 and goes up between the auxiliary mould 180, keeps going up auxiliary mould 180 with elasticity.Selectively, thickening device 150 can comprise and adopt the structure of cushion pins or press-on pins to replace spring 182.For example, drive unit 162 is fluid pressure drive devices, and it is configured and is arranged to selectively to make retainer 160 to move or move away from lower mold portion towards lower mold portion.
Patrix 170 forms the base portion that comprises opening, arranges auxiliary mould 180 and last punch 190 in this opening.Go up auxiliary mould 180 and comprise peripheral part 183 and pair of sidewalls 184.Sidewall 184 is configured to the outline basically identical with the sidewall of pressure forming member.
The lower mold portion that thickens device 150 is arranged in the opposite side of upper mold portion with respect to preform 20.Preform 20 is arranged between upper mold portion and the lower mold portion.As shown in Figure 5, lower mold portion comprises retainer 165, counterdie 175, following auxiliary mould 185 and bracing or strutting arrangement 187.
Retainer 165 supports counterdie 175.Retainer 165 comprises opening, and following auxiliary mould 185 inserts by this opening.
Down auxiliary mould 185 is arranged to be free to slide in the opening in being formed on retainer 165 and counterdie 175.Bracing or strutting arrangement 187 for example is a hydraulic support device, and it is configured and is arranged to auxiliary mould 185 under the resiliency supported.Therefore, following auxiliary mould 185 plays the effect of cushion pins or press-on pins.
The end face of counterdie 175 (end face among Fig. 5) and down auxiliary mould 185 end face (end face among Fig. 5) integratedly with the consistent also face of exerting pressure of the substantially flat of the connecting wall 21 of integrally formed support preform 20 of interior profile of the connecting wall of pressure forming member.
Therefore, the end face of the sidewall of heart portion 177, counterdie 175 and down the end face of auxiliary mould 185 the is integrally formed chamber surface corresponding with the interior profile of pressure forming member.On the other hand, as mentioned above, the sidewall 184 of upward auxiliary mould 180 and the face of exerting pressure of last punch 190 192 the are integrally formed chamber surface corresponding with the outline of pressure forming member.
Therefore, when the peripheral part 183 of retainer 165 declines and upward auxiliary mould 180 contacts with the lip portions 178 of counterdie 175, between upper mold portion that thickens device 150 and lower mold portion, form the corresponding chamber of cross sectional shape with the pressure forming member.The gap of the part that the bight with the pressure forming member in this chamber is corresponding or height be greater than the other parts in this chamber, and form space or open space that the material of the connecting wall 21 that allows preform 20 flows to bight 22.
In addition, as shown in Figure 5, the periphery of the end face of heart portion 177 preferably has curved shape, so that material moves.
In addition, in the pressure forming process, when last auxiliary mould 180 descended, upward auxiliary mould 180 was positioned at the opposite side of heart portion 177 with respect to the sidewall 23 of preform 20.In other words, the sidewall 23 of preform 20 is sandwiched between the outer peripheral face of the sidewall 184 of auxiliary mould 180 and heart portion 177.Moving of the sidewall 23 of the sidewall 184 of upward auxiliary mould 180 and the outer peripheral face of heart portion 177 constraint preform 20.In addition, in the pressure forming process, being arranged in a pair of free end face 24 of bight 22 opposition sides of sidewall 23 contacts with the bearing surface (end face among Fig. 5) of the lip portions 178 of counterdie 175.Like this, because preform 20 is restrained in the pressure forming process, the face of exerting pressure 192 of therefore going up punch 190 can be pressed to sidewall 23 with the connecting wall 21 of preform 20 reliably.The sidewall 184, the outer peripheral face of heart portion 177 and the lip portions 178 of counterdie 175 that go up auxiliary mould 180 constitute sidewall constraint portions of the present invention together.
Referring now to Fig. 6 to 11, the pressure forming method for manufacturing component according to the above-mentioned pressure forming member of the employing of first embodiment manufacturing equipment is described.
The pressure forming method for manufacturing component of first embodiment is configured to make the pressure forming member that comprises crooked bight by the tabular blank 10 of pressure forming, this method comprises and thickens processing that this thickens processing and utilizing and thickens device 150 increases the bight by pressure forming thickness.In addition, by thickening before device 150 thickens processing, be to comprise the preform in crooked bight 20 with blank 10 pressure formings at first by pre-forming device 100.
Fig. 6 is the partial section of the pre-forming device 100 of pressure forming member manufacturing equipment, illustrate preform handle in blank 10 be disposed in the upper mold portion of pre-forming device 100 and the workpiece setting between the lower mold portion.Fig. 7 is the partial section of the pre-forming device 100 of pressure forming member manufacturing equipment, is illustrated in the pressure forming processing of carrying out after the workpiece setting is set as shown in Figure 6.
At first, blank 10 is disposed on the counterdie 135 of pre-forming device 100.At this moment, the first 11 of blank 10 and second portion 13 lay respectively on the opening 138 and peripheral part 137 of counterdie 135, make the face of exerting pressure 147 of lower punch 145 contact with first 11.
Patrix 130 descends, and makes patrix 130 and counterdie 135 clamp (referring to Fig. 6) together.At this moment, the peripheral part 133 of patrix 130 is positioned on the second portion 13 of blank 10, and goes up and assist the face of exerting pressure 143 of mould 140 to contact with the first 11 of blank 10.
After finishing workpiece setting as shown in Figure 6, patrix 130 further descends to press counterdie 135.Because counterdie 135 retreats, the face of exerting pressure 147 of the lower punch 145 and first 11 of pressing blank 10 outstanding from the opening 138 of counterdie 135.The auxiliary mould 140 of going up that is kept by elasticity moves simultaneously along with moving of lower punch 145 and retreating (referring to Fig. 7) when sliding in the surface, chamber 134 of patrix 130.
The amount of movement of going up auxiliary mould 140 and lower punch 145 size (length) with the second portion 13 of blank 10 substantially is consistent.The surface, chamber 134 of patrix 130 is configured to consistent with the outline of pressure forming member usually.The terminal part of lower punch 145 (end face) is configured to consistent with the interior profile of pressure forming member usually.
Thus, as shown in Figure 7, in the preform step, the preform 20 that forms by pre-forming device 100 has the cross section of cap shape substantially, and this preform 20 comprises the connecting wall 21 of sidewall 23 that is separated out and the end that is connected sidewall 23.As mentioned above, because the face of exerting pressure 147 of lower punch 145 has the convex curvature shape, so connecting wall 21 has the convex curvature shape.
As mentioned above, in the preform process shown in Fig. 6 and 7, tabular blank 10 is made by pressure forming and forms the preform 20 that comprises bight 22.For example, in the preform process, because the second portion 13 of the peripheral part 137 guiding blanks 10 of the peripheral part 133 of patrix 130 and counterdie 135 is mobile, therefore, wrinkling is controlled.
Then, illustrate according to first embodiment by thickening the processing that thickens that device 150 carries out.
Fig. 8 is the partial section that thickens device 150 of pressure forming member manufacturing equipment, and the incipient stage according to the workpiece setting that thickens processing of first embodiment of the invention is shown.Fig. 9 is the partial section that thickens device 150 of pressure forming member manufacturing equipment, and the ending phase of the workpiece setting that thickens processing is shown.Figure 10 is the partial section that thickens device 150 of pressure forming member manufacturing equipment, is illustrated in the pressure forming processing of carrying out after the workpiece setting is set as shown in Figure 9.Figure 11 is the local amplification sectional view that thickens device 150, and the bight 22 according to the pressure forming member of first embodiment of the invention is shown.
At first, preform 20 is arranged to be coupled to the heart portion 177 (referring to Fig. 8) of counterdie 175.At this moment, the connecting wall 21 of preform 20 is in the face of the end face of the heart portion 177 of counterdie 175 and the end face of following auxiliary mould 185, and the sidewall 23 of preform 20 is in the face of the outer peripheral face of the heart portion 177 of counterdie 175.By connecting wall 21 (referring to Fig. 8) from the end face resiliency supported preform 20 of the outstanding following auxiliary mould 185 of the opening of heart portion 177.
Then, retainer 165 descends, and makes that going up punch 190 contacts and press this connecting wall 21 with the connecting wall 21 of preform 20.Connecting wall 21 retreats with following auxiliary mould 185, and contacts (referring to Fig. 8) with the end face of heart portion 177.At this moment, the end face of following auxiliary mould 185 aligns with the face of exerting pressure in integrally formed with the end face of heart portion 177.
Retainer 165 further descends, and makes to go up to assist mould 180 and last punch 190 further to shift near counterdie 175 and following auxiliary mould 185 (referring to Fig. 9) respectively.
The sidewall 23 of preform 20 is clipped in the middle by the outer peripheral face of the heart portion 177 of the sidewall 184 of last auxiliary mould 180 and counterdie 175.The free end face 24 of the sidewall 23 of preform 20 contacts with the bearing surface of the lip portions 178 of counterdie 175.
After finishing workpiece setting as shown in Figure 9, retainer 165 further descends, and begins to carry out pressure forming.The face of exerting pressure 192 of last punch 190 is pressed to sidewall 23 with the connecting wall 21 of preform 20, flows to bight 22 with the material that causes connecting wall 21.As a result, the back side of connecting wall 21 (end face among Figure 10) be (towards lower mold portion) distortion in opposite direction, and with by the end face of auxiliary mould 185 down and the end face of heart portion 177 integrally formed in the face of exerting pressure contact (referring to Figure 10).
As mentioned above, the end face of the sidewall of heart portion 177, counterdie 175 and the following integrally formed surface, the corresponding chamber of interior profile with the pressure forming member of the end face of auxiliary mould 185, upward the face of exerting pressure 192 of the sidewall 184 of auxiliary mould 180 and last punch 190 integrally formed with surfaces, the corresponding chamber of the outline pressure forming member.Therefore, the surface, the corresponding chamber of cross sectional shape of formation and pressure forming member between upper mold portion that thickens device 150 and lower mold portion.The gap of the chamber and the corresponding part in the bight pressure forming member or height are greater than the gap of the other parts in chamber and form the space or open space, make the material of connecting wall 21 of preform 20 flow to sidewall 23.
Thus, the material that flows to bight 22 has increased the thickness (referring to Figure 11) in bight 22.In other words, the thickness in crooked bight 22 has increased, and may compare by not enough traditional pressure forming member with the rigidity in crooked bight thus, has improved rigidity.
As mentioned above, in thickening process, the thickness in the bight 22 of preform 20 is increased.Because moving of the sidewall 23 of the sidewall 184 of last auxiliary mould 180 and counterdie 175 constraint preforms 20, the face of exerting pressure 192 of therefore going up punch 190 can be pressed to sidewall 23 with the connecting wall 21 of preform 20 reliably.
In addition, in the present invention, set the width of the connecting wall 21 of preform 20 for width greater than the connecting wall of the pressure forming member after finishing the process of thickening (being the net shape of pressure forming member).In addition, the curvature in the bight 22 of preform 20 is set for curvature greater than the bight of pressure forming member net shape.In other words, set in advance the preform mould of pre-forming device 100 and thicken the size and dimension that thickens mould of device 150 and the size and dimension of preform 20 and final pressure formed parts, make it to have above-mentioned relation.Like this, in thickening process, the connecting wall 21 of preform 20 and the excess stock at 22 places, bight are used the material that acts on the thickness of slab that increases the bight effectively.
Therefore, can under the situation of the cross sectional shape that does not significantly change the pressure forming member, improve the rigidity of pressure forming member by the thickening bight.In addition, can prevent owing to consider bight thickness reduce adopt the slab blank to increase as the weight of the caused pressure forming member of the material of pressure forming member and material cost (manufacturing cost) increase.In addition, owing to compare with welding method, the pressure forming method has good productivity ratio, therefore can avoid the increase of manufacturing cost.
Structural member is not limited to suspension elements shown in Figure 1 90, and pressure forming member according to the present invention also can be applicable to other parts of vehicle.Figure 12 to 14 illustrates other example that can use according to the structural member of the pressure forming member of first embodiment of the invention.More specifically, pressure forming member of the present invention can form as shown in figure 12 link member 91, member 92 shown in Figure 13, vehicle body parts 93 such as threshold (side sill) outside reinforcement shown in Figure 14, and other like.
In addition, the upper mold portion that thickens device 150 is not limited to comprise patrix 170 as discrete item, the last structure of auxiliary mould 180 and last punch 190.For example, Figure 15 is the partial section that thickens device 150A according to the variation of first embodiment of the invention.As shown in figure 15, the upper mold portion that thickens device 150A comprises one mode structure 190A.In this case, as shown in figure 15, preferred also is form fit with one mode structure 190A (upper mold portion) with the shape adjustments of lip portions 178A.
As mentioned above, in first embodiment, the thickness in the bight of pressure forming member is arranged to the thickness greater than the other parts of pressure forming member (being sidewall and connecting wall).Therefore, the pressure forming method for manufacturing component of first embodiment can reduce the manufacturing cost and the weight of the pressure forming member that comprises crooked bight.In addition, pressure forming member manufacturing equipment can reduce the manufacturing cost and the weight of the pressure forming member that comprises crooked bight.In addition, compare, can provide in light weight and the lower pressure forming member that comprises the bight of manufacturing cost with traditional pressure forming member.
Second embodiment
Referring now to Figure 16 to 19 pressure forming member manufacturing equipment according to second embodiment is described.Consider the similitude between first embodiment and second embodiment,, will provide the Reference numeral identical with first embodiment for the identical part of the part of second embodiment with first embodiment.In addition, for terse, will omit the explanation of the identical part of the part of second embodiment with first embodiment.
Figure 16 is the partial section that thickens device 250 according to the pressure forming member manufacturing equipment of second embodiment of the invention.Figure 17 is the partial section that thickens device 250 of pressure forming member manufacturing equipment, and the pressure forming process of the bight thickness that is used to increase the pressure forming member is shown.Figure 18 is the local amplification sectional view that thickens device 250, and the material that illustrates in the bight of pressure forming member flows.Figure 19 is the local amplification sectional view that thickens device 250, illustrates to finish the pressure forming status of processes.
The difference of the second embodiment of the present invention and first embodiment is among second embodiment to adopt and thickens device 250 and replace that first embodiment's thicken device 150.More specifically, the difference that thickens device 150 that thickens the device 250 and first embodiment of the second embodiment last punch 290 that is to thicken device 250 comprises the face of exerting pressure 292 (referring to Figure 16) of substantially flat.The face of exerting pressure 292 of second embodiment is configured to not only to increase the thickness in the bight 22 of preform 20, but also increases the thickness of the connecting wall 21 of preform 20.As shown in figure 17, the upper mold portion that thickens device 250 comprise with first embodiment in the same go up auxiliary mould 280.
As shown in figure 17, thickening in the process in a second embodiment, in the pressure-formed interstage, the connecting wall of preform 20 21 is recessed and be deformed into heart portion 277 and contact with the end face of auxiliary mould 285 down.At this moment, as shown in figure 17, the bight 22 of preform 20 upwards punch 290 is outstanding.
Then, when carrying out along with the pressure forming process, when the connecting wall 21 of preform 20 and bight 22 further are out of shape, as shown in figure 18, bight 22 stops to give prominence to, and the material of the ledge in bight 22 is assembled, thus with first embodiment in the same, the thickness increase (referring to Figure 19) in the bight 22 of preform 20.
On the other hand, different with first embodiment, form the substantially flat face because go up the face of exerting pressure 292 of punch 290, therefore between the connecting wall 21 of face of exerting pressure 292 and preform 20, form relatively large space (open space).Therefore, when bight 22 stopped to give prominence to, as shown in figure 18, some material of the ledge in bight 22 easily flowed into connecting wall 21.Thus, as shown in figure 19, also increased the thickness of the connecting wall 21 of preform 20.
Therefore, in a second embodiment, the bight of pressure forming member and the thickness of connecting wall can be increased, and the pressure forming member of connecting wall thickness can be obtained greater than sidewall thickness.
The 3rd embodiment
Referring now to Figure 20 and 21 pressure forming member manufacturing equipment according to the 3rd embodiment is described.Consider the similitude between first embodiment and the 3rd embodiment,, will provide the Reference numeral identical with first embodiment for the identical part of the part of the 3rd embodiment with first embodiment.In addition, for terse, will omit the explanation of the identical part of the part of the 3rd embodiment with first embodiment.
Figure 20 is the partial section that thickens device 350 according to the pressure forming member manufacturing equipment of third embodiment of the invention.Figure 21 is the local amplification sectional view that thickens device 350, and the material that illustrates in the bight of pressure forming member flows.
The difference of the third embodiment of the present invention and first embodiment or second embodiment is among the 3rd embodiment to adopt and thickens device 350 and replace that first embodiment's thicken device 150.More specifically, the difference that thickens device 150 that thickens the device 350 and first embodiment of the 3rd embodiment face of exerting pressure 392 that is to thicken the last punch 390 of device 350 has recessed (inwardly) curved shape and comprises the central portion 393 and outstanding taper (tapered) the edge portion 394 of substantially flat.In the 3rd embodiment, cause that the material flow performance that bight thickness increases is different from first embodiment or second embodiment.As shown in figure 20, the upper mold portion that thickens device 350 comprises the go up auxiliary mould 380 the same with first embodiment.
Thickening in the process in the 3rd embodiment, when pressure forming, recessed and be deformed into heart portion 377 and when the end face of auxiliary mould 385 contact down, gave prominence to along the flexure plane of the taper edge portion 394 of the face of exerting pressure 392 in the bight 22 of preform 20 when the connecting wall 21 of preform 20.
Then, when carrying out, when the connecting wall 21 of preform 20 and bight 22 further are out of shape along with the pressure forming process, bight 22 stops to give prominence to, and the material of the ledge in bight 22 is assembled, thereby as shown in figure 21, the thickness in the bight of pressure forming member increases.
On the other hand, are substantially flats because go up the central portion 393 of the face of exerting pressure 392 of punch 390, so between the connecting wall 21 of central portion 393 and preform 20, form relatively large space.Therefore, when bight 22 stopped to give prominence to, the same with second embodiment, some material of the ledge in bight 22 easily flowed into connecting wall 21, and thus, the thickness of the connecting wall 21 of preform 20 increases.
At this moment, because the taper edge portion 394 of the face of exerting pressure 392 of the last punch 390 that contacts with the bight 22 of preform 20 is crooked, so quickened material flowing in connecting wall 21.
Therefore, compare, in the 3rd embodiment, can more easily increase the thickness of the connecting wall of pressure forming member with second embodiment.
The 4th embodiment
Referring now to Figure 22 and 23 pressure forming member manufacturing equipment according to the 4th embodiment is described.Consider the similitude between first embodiment and the 4th embodiment,, will provide the Reference numeral identical with first embodiment for the identical part of the part of the 4th embodiment with first embodiment.In addition, for terse, will omit the explanation of the identical part of the part of the 4th embodiment with first embodiment.
Figure 22 is the partial section that thickens device 450 according to the pressure forming member manufacturing equipment of fourth embodiment of the invention.Figure 23 is the local amplification sectional view that thickens device 450, and the material that illustrates in the bight of pressure forming member flows.
The difference of the fourth embodiment of the present invention and the 3rd embodiment is in the 4th embodiment to adopt and thickens device 450 and replace that the 3rd embodiment's thicken device 350.More specifically, the difference that thickens device 350 that thickens device 450 and the 3rd embodiment of the 4th embodiment face of exerting pressure 492 that is to thicken the last punch 490 of device 450 also comprises curved recessed portion 495.Recess 495 is arranged in the central portion 493 of substantially flat and the intersection and the integrally formed face of exerting pressure continuously of taper edge portion 494.In the 4th embodiment, cause that the material flow performance that bight thickness increases is different from first embodiment or second embodiment.As shown in figure 22, the upper mold portion that thickens device 450 comprise with first embodiment in the same go up auxiliary mould 480.
Thickening in the process in the 4th embodiment, when pressure forming, recessed and be deformed into heart portion 477 and when the end face of auxiliary mould 485 contact down, gave prominence to along the taper edge portion 494 and the recess 495 of the face of exerting pressure 492 in the bight 22 of preform 20 when the connecting wall 21 of preform 20.
Then, when carrying out along with pressure-formed, further during distortion, bight 22 stops to give prominence to for the connecting wall 21 of preform 20 and bight 22, and the material of the ledge in bight 22 assembles, thereby the thickness in the bight 22 of preform 20 increases.
On the other hand, form the substantially flat face, so between the connecting wall 21 of central portion 493 and preform 20, form relatively large space (open space) because go up the central portion 493 of the face of exerting pressure 492 of punch 490.Therefore, when bight 22 stopped to give prominence to, some material of the ledge in bight 22 easily flowed into connecting wall 21, and the thickness of the connecting wall of pressure forming member increases thus.
At this moment because the taper edge portion 494 of the face of exerting pressure 492 of the last punch 490 that contact with the bight 22 of preform 20 is crooked, so with the 3rd embodiment in the same, quickened material mobile in connecting wall 21.
Yet, because the existence of recess 495 also causes material flowing in bight 22, therefore to compare with the 3rd embodiment, the thickness increase in bight is more.That is to say, can control material flowing in connecting wall 21 by the shape that changes recess 495.
Therefore, compare, in the 4th embodiment, can further increase the thickness in the bight of pressure forming member with the 3rd embodiment.
The present invention is not limited to previous embodiment, also can carry out different improvement under the prerequisite that does not break away from the scope of the invention that is defined by the following claims.For example, second embodiment to the, four embodiment can be deformed into the distressed structure of the upper mold portion of first embodiment as shown in figure 15.
The general explanation of term
When understanding scope of the present invention, " comprise " and derivative is considered to open term at the term of this employing, stipulate the existence of described feature, element, parts, group, integral body and/or step, but do not got rid of the existence that other does not have feature, element, parts, group, integral body and/or the step of description.Preamble has also been used the speech with similar meaning, and for example term " comprises ", " having " and their derivative.Equally, term " part ", " part ", " portion ", " member " or " element " that uses with odd number can have the dual meaning of single part or a plurality of parts.Describe equally as used herein above embodiment following direction term " forward, backward, the top, downwards, vertical, level, below with laterally " and any other similar direction term refer to those directions that vehicle of the present invention is housed.Therefore, describing these terms of the present invention should obtain explaining with respect to vehicle of the present invention is housed.For example " substantially ", " approximately " and " roughly " meaning are the reasonable departures that makes the term of modifying that final result can obviously not change at degree term that this adopted.
Although only select selected embodiment to describe the present invention, those skilled in the art will be well understood under the prerequisite that does not break away from the scope of the invention that is defined by the following claims from present disclosure can make multiple variation and modification at this.For example, the size of various parts, shape, position or orientation can as required and/or require to change.Be illustrated the parts that directly interconnect or contact and have the intermediate structure that is arranged between them.The function of an element can realize that vice versa by two.The 26S Proteasome Structure and Function of an embodiment can be used in another embodiment.Advantage that needn't be all occurs in a particular embodiment simultaneously.With respect to each exclusive in prior art feature separately or with the further feature combination after also should be considered to the further independent description of invention of applicant, comprise structure of this (these) feature instantiation and/or the notion on the function.Therefore, above according to an embodiment of the invention description only is exemplary proposition, is not to limit the present invention who is limited by claims and their content of equal value.
Cross reference with respect to related application
The application requires the Japanese patent application No.2005-348083 that submits on December 1st, 2005 and the priority of the Japanese patent application No.2006-215960 that submits on August 8th, 2006.The full content of Japanese patent application No.2005-348083 and No.2006-215960 is included in this for your guidance.
Claims (20)
1. pressure forming method for manufacturing component, it comprises:
The preform that will be deformed is provided; With
The thickness in the bight that increases described preform by described preform is exerted pressure.
2. pressure forming method for manufacturing component according to claim 1 is characterized in that,
Before the thickness in the described bight that increases described preform, by being that the described preform with described bight forms described preform with blank pressure forming.
3. pressure forming method for manufacturing component according to claim 2 is characterized in that,
The pressure forming of described blank comprises that crooked described blank has the described preform of cap shape cross sectional shape substantially with formation, described preform comprises pair of sidewalls and is arranged in connecting wall between the described sidewall, described corner arrangement between described connecting wall and described sidewall, and
The thickness that increases the described bight of described preform comprises that a part of material that makes in the described connecting wall flows to described bight.
4. pressure forming method for manufacturing component according to claim 3 is characterized in that,
The thickness that increases the described bight of described preform comprises towards described sidewall exerts pressure to described connecting wall, so that a part of material in the described connecting wall flows to described bight.
5. pressure forming method for manufacturing component according to claim 4 is characterized in that,
The thickness that increases the described bight of described preform is included in when described sidewall is exerted pressure to described connecting wall, and described sidewall is retrained.
6. pressure forming method for manufacturing component according to claim 5 is characterized in that,
The constraint of described sidewall is comprised described sidewall along from the central portion of the described sidewall row constraint that moves forward into towards the free-ended direction that is arranged in described central portion opposition side.
7. pressure forming member manufacturing equipment, it comprises:
Thicken device, it is configured and is arranged to preform is exerted pressure, with the thickness in the bight that increases described preform.
8. pressure forming member manufacturing equipment according to claim 7 is characterized in that, also comprises:
Pre-forming device, it is configured and is arranged to blank pressure forming is the described preform with described bight.
9. pressure forming member manufacturing equipment according to claim 8 is characterized in that,
Described pre-forming device comprises finishing die, described finishing die is configured and is arranged to crooked described blank and has the described preform of cap shape cross sectional shape substantially with formation, described preform comprises pair of sidewalls and is arranged in connecting wall between the described sidewall, described corner arrangement between described connecting wall and described sidewall, and
The described device that thickens comprises finishing die, and described finishing die is configured and is arranged to make a part of material in the described connecting wall to flow to described bight.
10. pressure forming member manufacturing equipment according to claim 9 is characterized in that,
The described described finishing die that thickens device comprises the face of exerting pressure that thickens, and the described face of exerting pressure that thickens is configured and is arranged to towards described sidewall described connecting wall to be exerted pressure, so that a part of material in the described connecting wall flows to described bight.
11. pressure forming member manufacturing equipment according to claim 10 is characterized in that,
The described described finishing die that thickens device also comprises the sidewall constraint portions, and described sidewall constraint portions is configured and is arranged in the described face of exerting pressure when described sidewall is exerted pressure to described connecting wall, and described sidewall is retrained.
12. pressure forming member manufacturing equipment according to claim 11 is characterized in that,
The described described sidewall constraint portions that thickens the described finishing die of device also comprises bearing surface, and described bearing surface is configured and is arranged to against the free end of the described sidewall that is arranged in described bight opposition side.
13. pressure forming member manufacturing equipment according to claim 12 is characterized in that,
The described finishing die of described pre-forming device also comprises:
The preform face of exerting pressure, it has the convex curvature shape, is configured and is arranged to described blank is exerted pressure, and has the described connecting wall of the described preform of convex curvature shape with formation, described convex curvature shape is outstanding along the direction opposite with described sidewall, and
The described described finishing die that thickens device also comprises:
First thickens mould portion, and it is configured and is arranged to be arranged in the inboard of described preform, described first thicken mould portion have described sidewall constraint portions and
Second thickens mould portion, and it is configured and is arranged to be arranged in the outside of described preform, and described second thickens mould portion has the described face of exerting pressure that thickens.
14. pressure forming member manufacturing equipment according to claim 13 is characterized in that,
The described second described mask of exerting pressure that thickens that thickens mould portion has the convex curvature shape.
15. pressure forming member manufacturing equipment according to claim 13 is characterized in that,
The described second described face of exerting pressure that thickens that thickens mould portion is the substantially flat face.
16. pressure forming member manufacturing equipment according to claim 13 is characterized in that,
The described second described mask of exerting pressure that thickens that thickens mould portion has recessed curved shape, and the described face of exerting pressure that thickens comprises the central portion of substantially flat and the taper edge portion of giving prominence to.
17. pressure forming member manufacturing equipment according to claim 16 is characterized in that,
The described second described face of exerting pressure that thickens that thickens mould portion also comprises the curved recessed portion that is arranged between described central portion and the described taper edge portion.
18. a pressure forming member, it comprises:
First wall with first thickness;
Second wall with second thickness; With
Be arranged in first bight between described first wall and described second wall, form described first bight by pressure forming, make the thickness of described increase in described first bight greater than described first thickness and described second thickness of described first wall adjacent and described second wall with described first bight with the thickness that increased.
19. pressure forming member according to claim 18 is characterized in that, also comprises:
The 3rd wall with the 3rd thickness; With
Be arranged in second bight between described second wall and described the 3rd wall, make described first wall and described the 3rd wall constitute pair of sidewalls, described second wall constitutes connecting wall, to form the cross sectional shape of cap shape substantially, form described second bight by pressure forming, make the thickness of described increase in described second bight greater than described first thickness of described first wall, described second wall and described the 3rd wall, described second thickness and described the 3rd thickness with the thickness that increased.
20. pressure forming member according to claim 19 is characterized in that,
Described second thickness of described second wall is at least greater than the described first wall adjacent with described second bight with described first bight and described first thickness and described the 3rd thickness of described the 3rd wall.
21. a structural member, it comprises pressure forming member as claimed in claim 20.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005348083 | 2005-12-01 | ||
| JP2005-348083 | 2005-12-01 | ||
| JP2005348083 | 2005-12-01 | ||
| JP2006215960 | 2006-08-08 | ||
| JP2006-215960 | 2006-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1974048A true CN1974048A (en) | 2007-06-06 |
| CN100427235C CN100427235C (en) | 2008-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101607869A Expired - Fee Related CN100427235C (en) | 2005-12-01 | 2006-12-01 | Press-formed workpiece with an increased corner portion thickness and apparatus and method for manufacture thereof |
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| Country | Link |
|---|---|
| CN (1) | CN100427235C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102948A (en) * | 2014-03-28 | 2016-11-09 | 新日铁住金株式会社 | There is the manufacture method of the tabular molded body of multiple thickening and there is the tabular molded body of multiple thickened section |
| CN106180371A (en) * | 2015-04-30 | 2016-12-07 | 小米科技有限责任公司 | The crude green body processing method of mobile device middle frame structure |
| US9724745B2 (en) | 2009-08-26 | 2017-08-08 | Toyota Jidosha Kabushiki Kaisha | Press forming method |
| CN114888181A (en) * | 2022-07-13 | 2022-08-12 | 苏州春秋电子科技股份有限公司 | Integral die with flanging and pier thickness |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016118418A1 (en) * | 2016-09-29 | 2018-03-29 | Thyssenkrupp Ag | Method for producing a molded component with a dimensionally stable frame area |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3278814B2 (en) * | 1992-10-12 | 2002-04-30 | フジオーゼックス株式会社 | Method of forming tappet body for internal combustion engine |
| JPH09295088A (en) * | 1996-03-04 | 1997-11-18 | Matsushita Electric Ind Co Ltd | Bottomed cylindrical body and its manufacture |
| JP2001314921A (en) * | 2000-04-28 | 2001-11-13 | Nissan Motor Co Ltd | Pressing method for expanding local area thickness |
| JP2003012260A (en) * | 2001-07-04 | 2003-01-15 | Nissei Koki Kk | Skip device |
| DE10303184B3 (en) * | 2003-01-28 | 2004-04-08 | Benteler Automobiltechnik Gmbh | Plate production process for plates varying in thickness involves forging metal sheet in tool with punch |
-
2006
- 2006-12-01 CN CNB2006101607869A patent/CN100427235C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9724745B2 (en) | 2009-08-26 | 2017-08-08 | Toyota Jidosha Kabushiki Kaisha | Press forming method |
| CN106102948A (en) * | 2014-03-28 | 2016-11-09 | 新日铁住金株式会社 | There is the manufacture method of the tabular molded body of multiple thickening and there is the tabular molded body of multiple thickened section |
| US10464116B2 (en) | 2014-03-28 | 2019-11-05 | Nippon Steel Corporation | Method of manufacturing plate-like molded body having a plurality of thickened portions, and plate-like molded body having a plurality of thickened portions |
| CN106180371A (en) * | 2015-04-30 | 2016-12-07 | 小米科技有限责任公司 | The crude green body processing method of mobile device middle frame structure |
| CN114888181A (en) * | 2022-07-13 | 2022-08-12 | 苏州春秋电子科技股份有限公司 | Integral die with flanging and pier thickness |
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| Publication number | Publication date |
|---|---|
| CN100427235C (en) | 2008-10-22 |
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