CN101780502B - Steel wheel spoke stamping process for passenger car and processing mould - Google Patents

Steel wheel spoke stamping process for passenger car and processing mould Download PDF

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Publication number
CN101780502B
CN101780502B CN2009100522034A CN200910052203A CN101780502B CN 101780502 B CN101780502 B CN 101780502B CN 2009100522034 A CN2009100522034 A CN 2009100522034A CN 200910052203 A CN200910052203 A CN 200910052203A CN 101780502 B CN101780502 B CN 101780502B
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Prior art keywords
spoke
mold core
descending
press
plate
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CN101780502A (en
Inventor
张义庆
陈志豪
朱森林
薛峰
刘慧青
亓峰
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SHANGHAI BAOSTEEL WHEEL CO Ltd
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SHANGHAI BAOSTEEL WHEEL CO Ltd
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Abstract

The invention relates to a steel wheel spoke stamping process for a passenger car, comprising the following steps of: (1) cutting a panel veneer: placing the rectangular panel veneer on a material support, the left and right ends as well as the front end of which are positioned by a set rule; when a press descends, cutting the panel veneer at the same time by using a peripheral cutting edge at the lower part of the outer edge of an upper mold core and a trim blade to form a spoke panel veneer; (2) stretching the panel veneer: placing the trimmed spoke panel veneer on a blank pressing ring, and pressing down the spoke panel veneer through the upper mold core and the blank pressing ring, wherein in the descending process of the press, the middle part of the spoke panel veneer firstly contacts the lower mold core to prevent the middle part of the spoke panel veneer from descending, and the peripheral part of the spoke panel veneer without being blocked continuously stretches the spoke panel veneer along with the descending of the upper mold core and the blank pressing ring; (3) punching central holes of the spoke; and (4) resetting and discharging. The invention integrates the blanking and stretching processes, adopts the one-step positioning way to ensure the concentricity of the central hole of the spoke and the outer edge of the spoke to ensure the processing quality of the spoke and reduces one process compared with the prior art, thereby greatly improving the production efficiency.

Description

Passenger car steel wheel spoke stamping processing technology and processing mold
Technical field
The invention belongs to steel wheel spoke and make the field, particularly passenger car steel wheel spoke stamping processing technology and processing mold.
Background technology
Wheel spoke is the main support part that connects automotive hub and tire, also is the critical component of (whether the decision wheel is attractive in appearance) wheel safety.
At present, produce the main technology of steel wheel spoke and comprise, shear blanking, just stretch, negative drawing is shaped, cut edge, towards the bolt hole flange, squeeze bolt hole, towards the wind hole, squeeze burr, beat operations such as steel seal, finishing.
The production of steel wheel spoke is general to cut into the spoke sheet stock with microscler plate by shearing blanking process earlier, by sheet stock is carried out repeatedly punch forming sheet stock is processed into spoke then.After shearing blanking, the spoke sheet stock is stretched towards centre bore technology, owing to precedingly shear technology together and stretch together down towards existing certain position error (accumulation of blanking scale error that is caused and the positioning accuracy error of this technology) can make the concentricity of spoke centre hole and spoke outer rim relatively poor between the centre bore technology, can influence the precision of spoke subsequent machining technology simultaneously, and then easily cause the circular runout of wheel.
Summary of the invention
The object of the present invention is to provide a kind of passenger car steel wheel spoke stamping processing technology and processing mold, blanking and drawing process are united two into one, the mode of employing one-time positioning guarantees the axiality of spoke centre hole and spoke outer rim, to guarantee the crudy of spoke; And the spoke production technology reduces by a procedure than prior art, enhances productivity greatly.
For achieving the above object, technical scheme of the present invention is,
Passenger car steel wheel spoke stamping processing mold, it comprises, and upper and lower mould bases is character respectively, and is oppositely arranged, and both sides connect by guide pillar respectively, establish limited block therebetween; The side cut tool rest ringwise, is arranged at down the mould bases middle part, and an accommodation space is offered at the middle part; Some edge-trimming cutters are arranged at respectively on the side cut tool rest; The counterdie cushion block is arranged in the accommodation space of side cut tool rest middle part, and cushion block central authorities have central through hole; Lower mold core is arranged on the counterdie cushion block, lower mold core middle part projection, and to the oblique extension in both sides; Projection central authorities have the groove on central through hole and central through hole top; Following punch die is located in the lower mold core groove, and through hole is established at the mould center; Blank holder is arranged at the lower mold core outer rim, can move up and down; Last backform, spring is connected in top mold frame, and correspondence is arranged at lower mold core middle part projection, and the middle part has through hole; Upper mold core, structure ringwise, the outer rim lower periphery has cutting edge; This upper mold core is sheathed on the backform bottom, corresponding to the lower mold core outside, and its medial surface shape and lower mold core outer shape coupling, the bottom is corresponding with blank holder; And be connected in top mold frame by the patrix cushion block; The upper punch headstock is arranged in the through hole at backform middle part, establishes the centre bore ejector beam that can stretch in the middle of it; Upper trimming die is arranged under the upper punch headstock, corresponding punch die down; Have on the upper trimming die for the flexible through hole of centre bore ejector beam; The patrix cushion block is placed on the backform outer rim, the corresponding lower mold core in below, and the top links to each other with top mold frame; The centre bore ejector beam places upper punch headstock and upper trimming die inside, and the top is connected with spring, the extension type structure; Guide pillar, cylindric, be arranged at four jiaos of mould bases up and down, in the guide pillar hole corresponding to mould bases up and down; The flanging ring support, circular, be arranged at the blank holder below, be placed on counterdie cushion block outer rim; Flanging ring support below is provided with the top rod, and blank holder can move up and down; The top rod, cylindric, be arranged at flanging ring support below, following mould bases pushes up in the excellent hole, and rod below, top is corresponding with push rod in the press, regulates the lifting of top rod by the lifting of push rod in the press.
Further, the present invention is provided with 5 edge-trimming cutters, is located on respectively on the side cut tool rest.
Again, be provided with centre bore ejector beam scalable, that elasticity connects in the middle of the upper trimming die, prevent that die-cut waste material from sticking on the upper trimming die.
In addition, the present invention establishes three positioning rules on the side cut tool rest, lays respectively at the right and left and the front end that are placed on the side cut tool rest, arranges that in a triangle the rectangle plate is placed between positioning rule, and wherein, left positioning rule is longer than right positioning rule.
A kind of passenger car of the present invention steel wheel spoke stamping processing technology, it comprises the steps:
1) plate is sheared
The rectangle plate is placed on material supporting rack--on the side cut tool rest, its right and left and front end are located by positioning rule; When press when descending, upper mold core outer rim lower periphery cutting edge and edge-trimming cutter are sheared the rectangle plate simultaneously, form the spoke plate;
2) sheet metal stretching
Spoke plate after cutting edge is placed on the blank holder, compresses the spoke plate descending by upper mold core and blank holder; In the descending process of press, spoke plate middle part at first contacts with lower mold core and stops spoke plate middle part descending, and the position that the spoke slab perimeter is not stopped is continued along with upper mold core and blank holder is descending that the spoke plate is stretched;
3) towards the spoke centre hole
Behind the descending certain distance of press, last backform contacts with spoke plate middle part owing to be that spring is connected between last backform and the top mold frame, when top mold frame along with press is continuous when descending, spring constantly compresses, thus on also contact roller disc material constantly of backform; When press continues when descending, upper trimming die touches the spoke plate, go out the spoke centre hole by upper trimming die and following punch die effect, owing to scribble lubricating oil on the spoke plate, in order to prevent that sweeping away the circle material that comes from centre bore is attached on the upper trimming die, by the centre bore ejector beam with disk material top down, waste material is collected by the waste outlet in the mould;
4) reset and get material
Press continues descending, after top mold frame arrival is spacing, press stops descending beginning return, spoke plate after simultaneously blank holder also gently stretches under the top rod effect corresponding with push rod in the press in tow rises, when the top mold frame return arrives certain altitude, after blank holder also turns back to initial position, the spoke plate is taken off.
Further, the locate mode of rectangle plate on the side cut tool rest adopts three positioning rule, lays respectively at the right and left and the front end that are placed on rectangle plate on the material supporting rack, and wherein, left positioning rule is longer than right positioning rule.
The present invention is placed on the rectangle plate on the following tool rest of spoke stamping mould, by about and the positioning rule in the place ahead location of realizing plate, upper mold core outer rim lower periphery is a cutting edge, inside is the stretching die cavity.When the descending contact workpiece of upper mold core, upper mold core outer rim lower periphery cutting edge cuts into the spoke sheet stock with plate earlier, and upper mold core continues the stretching of descending realization sheet stock towards centre bore technology.
Spoke blanking stretching compound die technology of the present invention is compared with traditional handicraft,
1, reduces repeatedly the accumulated error that bring the location, thereby guaranteed the axiality of centre bore and spoke outer rim
Shape was seen Fig. 4, shown in Figure 5 after the spoke blanking stretched, this moment, centre bore and spoke outer rim should keep good axiality, spoke could keep good axiality in moulding flange rear center hole and spoke cylindrical like this, and it is that assurance assembly rear wheel avoids occurring the necessary condition that excessive radial is beated that spoke has good axiality.
By Fig. 1~Fig. 3 as can be known, the plate of square plate completion band circular arc need be decided once position,, in the time of will having the sheet metal stretching of circular arc, also need decide once position, to guarantee the axiality at centre bore and spoke edge to plate to guarantee 4 sections circular arcs on same circumference.Because the self-defect of restriction of the machining accuracy of mould and technology, after finishing blanking and stretching two procedures, the accumulation of error often makes spoke centre hole and outer peripheral axiality relatively poor, thereby easily causes the circular runout of wheel.
2, reduce manufacturing procedure, improved the production efficiency of spoke
The now synthetic procedure of original two procedures has obviously been saved the production time.Suppose that original twice manufacturing procedure production spoke needs 20 seconds, behind the synthetic now procedure, finishing same thing needs 15 seconds, promptly produces each spoke and saves 5 seconds.If a class produces 2000 spokes, just just can save time nearly 2.8 hours by improving blanking stretching compound die.
3, save cost
Blanking stretching compound die is the colony material and stretches, and two original secondary moulds are synthesized a width of cloth mould, has at first saved the die sinking cost.Secondly, owing to reduced by a procedure, also reduced corresponding operating personnel simultaneously, thereby also reduced human cost.Moreover, produce spoke and not necessarily leave no choice but plate is cut into square stock, can only cut into the rectangle billot and get final product, count the calculating processing expense if press shear knife, the shear knife number was than lacking 2/3 in the past, and therefore shearing cost also can reduce 2/3 accordingly.
Description of drawings
Fig. 1~Fig. 3 becomes the schematic diagram of band circular arc plate for existing square plate blanking;
Fig. 4, Fig. 5 are the schematic diagram of rectangle plate blanking of the present invention;
Fig. 6 is the structural representation of punch process mould of the present invention;
Fig. 7 is the schematic diagram of blanking of the present invention location.
The specific embodiment
Referring to Fig. 6, Fig. 7, passenger car of the present invention steel wheel spoke stamping processing mold, it comprises that top mold frame 12, following mould bases 1 are character respectively, and are oppositely arranged, both sides connect by guide pillar 2 respectively, establish limited block 3 therebetween; Side cut tool rest 4 ringwise, is arranged at down mould bases 1 middle part, and an accommodation space is offered at the middle part; 5 edge-trimming cutters 10 are arranged at respectively on the side cut tool rest 4; Counterdie cushion block 8 is arranged in the side cut tool rest 4 middle part accommodation spaces, and cushion block central authorities have central through hole; Lower mold core 7 is arranged on the counterdie cushion block 8, and establishes a centring ring 9; Lower mold core 7 middle part projectioies, and to the oblique extension in both sides; Projection central authorities have the groove on central through hole and central through hole top; Following punch die 13 is located in the lower mold core groove 72, and through hole is established at the mould center; Blank holder 5 is arranged at lower mold core 7 outer rims, can move up and down; Last backform 17, spring is connected in top mold frame 12, and correspondence is arranged at lower mold core 7 middle part projectioies, and the middle part has through hole; Upper mold core 19, structure ringwise, the outer rim lower periphery has cutting edge; This upper mold core 19 is sheathed on backform 17 bottoms, corresponding to lower mold core 7 outsides, and its medial surface shape and lower mold core 7 outer shape coupling, the bottom is corresponding with blank holder 5; And be connected in top mold frame 12 by patrix cushion block 18; Upper punch headstock 16 is arranged in the through hole at backform middle part, establishes the centre bore ejector beam 15 that can stretch in the middle of it; Upper trimming die 14 is arranged at the upper punch headstock 16 times, corresponding punch die 13 down; Have the through hole that stretches for centre bore ejector beam 15 on the upper trimming die 14; Patrix cushion block 18 is placed on backform 17 outer rims, the corresponding lower mold core 7 in below, and the top links to each other with top mold frame 12; Centre bore ejector beam 15 places upper punch headstock 16 and upper trimming die 14 inside, and the top is connected with spring, and is scalable; Guide pillar 2, cylindric, be arranged at four jiaos of mould bases 12,1 up and down, in guide pin bushing 22 in the guide pillar hole of upper and lower mould bases 12,1; Flanging ring support 6, circular, be arranged at blank holder 5 belows, be placed on counterdie cushion block 8 outer rims; Flanging ring support 6 belows are provided with top rod 11, and blank holder 5 can move up and down; Top rod 11, cylindric, be arranged at flanging ring support 6 belows, in the excellent hole, following mould bases 1 top, rod below, top is corresponding with push rod in the press, regulates the lifting of top rod by the lifting of push rod in the press; Three positioning rules 20,20 ', 20 ", be arranged on the side cut tool rest 4, arrange that in a triangle rectangle plate 21 is placed on positioning rule 20,20 ', 20 " between.
Be provided with centre bore ejector beam scalable, that elasticity connects in the middle of the upper trimming die, prevent that die-cut waste material from sticking on the upper trimming die.
Add man-hour, the spoke plate after the side cut is placed on the blank holder 5 at this moment, compresses the spoke plate descending by upper mold core 19 and blank holder 5.In the descending process of press, spoke plate middle part at first contacts with lower mold core 7 and stops spoke plate middle part descending, continues along with upper mold core 19 and blank holder 5 are descending plate to be stretched in the position that the spoke slab perimeter is not stopped.
Behind the descending certain distance of press, last backform 17 touches the spoke plate, because between last backform 17 and the top mold frame 12 (top mold frame is connected on the lathe) is that spring is connected, when top mold frame 12 along with press is continuous when descending, spring constantly compresses, thereby goes up also contact roller disc material constantly of backform 17.
When press continues when descending, upper trimming die 14 touches workpiece, acts on by upper trimming die 14 and following punch die 13 and goes out the spoke centre hole.Owing to scribble lubricating oil on the plate, in order to prevent that sweeping away the circle material that comes from centre bore is attached on the upper trimming die 14, by centre bore ejector beam 15 with disk material top down, waste material is collected by the waste outlet in the mould.
Press continues descending, after top mold frame arrival is spacing, press stops descending beginning return, spoke plate after blank holder also gently stretches under top rod (corresponding with the push rod in the press) effect in tow simultaneously rises, when the top mold frame return arrives certain altitude, after blank holder also turned back to initial position, the workman took off the spoke plate.
Referring to Fig. 7, the location of spoke blanking stretching compound die of the present invention:
Prior art is because former blanking die and stretching die are located respectively, and the accumulation of error of twice location can make the axiality at spoke centre hole after the stretching and spoke edge relatively poor, thereby can finally influence the circular runout of wheel.
Blanking stretching compound die of the present invention is taked the mode of one-time positioning, reduced because the accumulated error of twice location is taked in former blanking and stretching, the compound die of blanking stretching simultaneously left side positioning rule is longer, has guaranteed positioning accuracy more, thereby the circular runout that has guaranteed wheel is in allowed band.
The locate mode of rectangle plate 21 on side cut tool rest 4 adopts three positioning rule 20,20 ', 20 ", lay respectively at the right and left and the front end that are placed on rectangle plate 21 on the side cut tool rest 4, wherein, left positioner chi 20 is longer than right positioner chi 20 '; 5 edge-trimming cutters 10 are arranged at respectively on the side cut tool rest 4.
In sum, the present invention unites two into one blanking and drawing process, the mode of employing one-time positioning guarantees the axiality of spoke centre hole and spoke outer rim, to guarantee the crudy of spoke, also guaranteed the presentation quality that twice location produced (escape the limit, thicken and four jiaos of inequalities of attenuate), reduce personnel cost and Mould Machining cost simultaneously, improved the productive temp of spoke.And on whole spoke production technology, change having been arranged also, the blanking stretching is compound to reduce by a procedure than prior art, will improve production efficiency greatly like this.

Claims (6)

1. passenger car steel wheel spoke stamping processing mold is arranged on the press, it is characterized in that, comprise,
Upper and lower mould bases is character respectively, and is oppositely arranged, and upper and lower mould bases both sides connect by guide pillar respectively, establish limited block therebetween;
The side cut tool rest ringwise, is arranged at down the mould bases middle part, and an accommodation space is offered at the middle part;
Some edge-trimming cutters are arranged at respectively on the side cut tool rest;
The counterdie cushion block is arranged in the accommodation space of side cut tool rest middle part, and cushion block central authorities have central through hole;
Lower mold core is arranged on the counterdie cushion block, lower mold core middle part projection, and to the oblique extension in both sides; Projection central authorities have the groove on central through hole and central through hole top;
Following punch die is located in the lower mold core groove, and through hole is established at the mould center;
Blank holder is arranged at the lower mold core outer rim, can move up and down;
Last backform, spring is connected in top mold frame, and with the corresponding setting of lower mold core middle part projection, the middle part has through hole;
Upper mold core, structure ringwise, the outer rim lower periphery has cutting edge; This upper mold core is sheathed on the backform bottom, corresponding to the lower mold core outside, and its medial surface shape and lower mold core outer shape coupling, the bottom is corresponding with blank holder; And be connected in top mold frame by the patrix cushion block;
The upper punch headstock is arranged in the through hole at backform middle part, establishes the centre bore ejector beam that can stretch in the middle of it;
Upper trimming die is arranged under the upper punch headstock, corresponding punch die down; Have on the upper trimming die for the flexible through hole of centre bore ejector beam;
The patrix cushion block is placed on the backform outer rim, the corresponding lower mold core in below, and the top links to each other with top mold frame;
The centre bore ejector beam places upper punch headstock and upper trimming die inside, and the top is connected with spring, is the extension type structure;
Guide pillar, cylindric, be arranged at four jiaos of upper and lower mould bases, in the guide pillar hole corresponding to upper and lower mould bases;
The flanging ring support, circular, be arranged at the blank holder below, be placed on counterdie cushion block outer rim;
The top rod, cylindric, be arranged at below the flanging ring support, following mould bases pushes up in the excellent hole, and rod below, top is corresponding with push rod in the press, regulates the excellent lifting in top by the lifting of push rod in the press, and blank holder can be moved up and down.
2. passenger car steel wheel spoke stamping processing mold as claimed in claim 1 is characterized in that, is provided with 5 edge-trimming cutters, is located on respectively on the side cut tool rest.
3. passenger car steel wheel spoke stamping processing mold as claimed in claim 1 is characterized in that, is provided with centre bore ejector beam scalable, that elasticity connects in the middle of the described upper trimming die.
4. passenger car steel wheel spoke stamping processing mold as claimed in claim 1, it is characterized in that, establish three positioning rules on the side cut tool rest, lay respectively at the right and left and the front end of side cut tool rest, arrange in a triangle, the rectangle plate is placed between positioning rule, and wherein, left positioning rule is longer than right positioning rule.
5. passenger car steel wheel spoke stamping processing technology, it comprises the steps:
1) plate is sheared
The rectangle plate is placed on material supporting rack--on the side cut tool rest, its right and left and front end are located by positioning rule; When press when descending, upper mold core outer rim lower periphery cutting edge and edge-trimming cutter are sheared the rectangle plate simultaneously, form the spoke plate;
2) sheet metal stretching
Spoke plate after cutting edge is placed on the blank holder, compresses the spoke plate descending by upper mold core and blank holder; In the descending process of press, spoke plate middle part at first contacts with lower mold core and stops spoke plate middle part descending, and the position that the spoke slab perimeter is not stopped is continued along with upper mold core and blank holder is descending that the spoke plate is stretched;
3) towards the spoke centre hole
Behind the descending certain distance of press, last backform contacts with spoke plate middle part owing to be that spring is connected between last backform and the top mold frame, when top mold frame along with press is continuous when descending, spring constantly compresses, thus on also contact roller disc material constantly of backform; When press continues when descending, upper trimming die touches the spoke plate, go out the spoke centre hole by upper trimming die and following punch die effect, owing to scribble lubricating oil on the spoke plate, in order to prevent that sweeping away the circle material that comes from centre bore is attached on the upper trimming die, by the centre bore ejector beam with disk material top down, waste material is collected by the waste outlet in the mould;
4) reset and get material
Press continues descending, after top mold frame arrival is spacing, press stops descending beginning return, spoke plate after simultaneously blank holder also gently stretches under the top rod effect corresponding with push rod in the press in tow rises, when the top mold frame return arrives certain altitude, after blank holder also turns back to initial position, the spoke plate is taken off.
6. passenger car steel wheel spoke stamping processing technology as claimed in claim 5, it is characterized in that the locate mode of rectangle plate on the side cut tool rest adopts three positioning rule, lays respectively at the right and left and the front end of rectangle plate on the material supporting rack, wherein, left positioning rule is longer than right positioning rule.
CN2009100522034A 2009-05-27 2009-05-27 Steel wheel spoke stamping process for passenger car and processing mould Active CN101780502B (en)

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