Be applicable to the continuous stamping die of punching out automobile brake sheet
Technical field
The present invention relates to a kind of continuous stamping die, be specifically related to a kind of continuous stamping die that is applicable to the punching out automobile brake sheet, belong to the diel field.
Background technology
The thickness of general automobile brake sheet is 2mm; Thicker, then the difficulty of processing of brake block is just more difficult, and this is because the material of automobile brake sheet is a cold-rolled steel; Big thickness can make that the euphotic belt of section of product is not enough, and this mainly is security and a utilization rate of considering brake block.For example the euphotic belt of 5-6mm automobile brake sheet requirement section is more than 75%, and in addition, brake block can not have the angle of collapsing phenomenon, and does not have burr.Be directed to the processing of this kind thickness now, conventional employed mould of production and technology can't meet the demands.
Summary of the invention
For solving the deficiency of prior art, the object of the present invention is to provide a kind of continuous stamping die that is applicable to the punching out automobile brake sheet that can effectively in the process of punching out, improve the euphotic belt ratio.
In order to realize above-mentioned target, the continuous stamping die of punching out automobile brake sheet that is applicable to of the present invention adopts following technical scheme:
Be applicable to the continuous stamping die of punching out automobile brake sheet; Comprise module and following module; It is characterized in that the above-mentioned module of going up comprises: a plurality ofly be used for the drifts that substep is accomplished punching out, above-mentioned module down comprises: be used for matching with above-mentioned a plurality of drifts and accomplish the lower bolster of processing; Above-mentioned a plurality of drift comprises: a plurality of preprocessing drift and moulding drifts that are used to be machined directly to target size that are used to leave surplus processing; Above-mentioned lower bolster is provided with a plurality of counterdie material-dropping holes, and above-mentioned counterdie material-dropping hole top constitutes the counterdie cutting edge; Above-mentioned a plurality of counterdie material-dropping hole comprises: a plurality of preprocessing material-dropping hole corresponding with above-mentioned preprocessing drift and moulding material-dropping holes corresponding with above-mentioned moulding drift of being used for; Above-mentioned drift cutting edge gap is greater than its pairing counterdie cutting edge gap.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet; It is characterized in that; The above-mentioned module of going up also comprises: be used to install above-mentioned a plurality of drift and constitute upper padding plate and the train wheel bridge that is fixedly connected with it; Be fixed in the upper bolster of above-mentioned upper padding plate top; Be arranged at the mounting plate of above-mentioned upper bolster top, be arranged at a plurality of spring boxs and top block between above-mentioned upper bolster and the above-mentioned mounting plate, be arranged at above-mentioned train wheel bridge top and above-mentioned drift and be slidingly connected and supply its baffle plate that passes and stripper plate; Above-mentioned upper padding plate is fixed on the top of above-mentioned train wheel bridge, and above-mentioned baffle plate is positioned at the top of above-mentioned stripper plate.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet is characterized in that, above-mentioned module down also comprises: the lower bolster, die shoe, bottom seat pad and the bottom plate that are fixed in above-mentioned lower bolster below respectively successively.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet is characterized in that, above-mentioned preprocessing drift comprises: first drift that the cutting edge gap reduces successively, second drift, the 3rd drift; Above-mentioned preprocessing material-dropping hole comprises: that the cutting edge gap reduces successively and with above-mentioned first drift, second drift, first material-dropping hole, second material-dropping hole, the 3rd material-dropping hole that the 3rd drift is corresponding successively.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet is characterized in that, the cutting edge of above-mentioned preprocessing drift is straight cutting edge, and the cutting edge of above-mentioned moulding drift is a round edge.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet is characterized in that, the hole wall of above-mentioned counterdie material-dropping hole is divided into the two parts that join from top to bottom: perpendicular to the straight section of horizontal direction and the tapered section that forms an angle with vertical direction.
The aforesaid continuous stamping die that is applicable to the punching out automobile brake sheet is characterized in that, less number of degrees are 4 ° in above-mentioned tapered section and the angle that vertical direction is become.
Usefulness of the present invention is:
Owing to adopt continuous stamping die preprocessing several times; Make and finally adding man-hour; Target size is directly adopted in the cutting edge gap of moulding drift, does not leave surplus, and the cutting edge of moulding drift is round edge and goes up module and adopted a plurality of spring boxs in order to improve pressure-plate-force; So, can on the section at stamping-out after the final machine-shaping, increase the area ratio of euphotic belt.
Description of drawings
Fig. 1 is the structural representation of a preferred embodiment of the continuous stamping die that is applicable to the punching out automobile brake sheet of the present invention;
Fig. 2 is the structure enlarged diagram at E place among Fig. 1;
Fig. 3 is the structure enlarged diagram at F place among Fig. 1;
Fig. 4 is the structural representation of the counterdie material-dropping hole among Fig. 1.
The implication of Reference numeral among the figure:
1, first drift; 2, second drift; 3, the 3rd drift; 4, moulding drift; 5, lower bolster; 6, upper padding plate; 7, train wheel bridge; 8, upper bolster; 9, mounting plate; 10, spring box; 11, top block; 12, baffle plate; 13, stripper plate; 14, lower bolster; 15, die shoe; 16, bottom seat pad; 17, bottom plate; 18, straight section; 19, tapered section; 20, final products.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done concrete introduction.
Referring to figs. 1 through shown in Figure 3, the continuous stamping die of punching out automobile brake sheet that is applicable to of the present invention mainly comprises: go up module and following module.
Last module comprises two types of drifts, and one type is a plurality of preprocessing drifts that are used to leave surplus processing, and another kind of only have one for being used to be machined directly to the moulding drift 4 of target size.They all are fixed on same going up in the module, as the drift that moves together in the continuous punching press.
Particularly; The effect of preprocessing drift is the target size that makes its middleware that processes approach automobile brake sheet gradually; Make when finally using forming punch 4, the object of being processed makes the cutting edge gap of moulding drift 4 directly make target size for only remaining the middleware of a small amount of surplus; So can effectively increase euphotic belt, also increase the life-span and the machining accuracy of forming punch 4 simultaneously.
As a kind of preferred version, the cutting edge of preprocessing drift is a straight angle cutting edge, and the cutting edge of moulding drift is a round edge, the radius 100mm of the fillet of round edge.
As a kind of preferred version, the number of preprocessing drift is three groups, comprising: first drift 1 that the cutting edge gap reduces successively, second drift 2, the 3rd drift 3 also are to use them successively adding man-hour.Shown in Figure 3 is the enlarged diagram at E place among Fig. 1 (i.e. first drift, 1 place), and shown in Figure 4 is the enlarged diagram at F place among Fig. 1 (i.e. second drift, 2 places).The target size of supposing automobile brake sheet processing is L, and the material thickness of processing is T, and the bilateral cutting edge gap of the first processing drift 1 is for then being L+2AT; Wherein the span of A is 25%-45%; The bilateral cutting edge gap of the second processing drift 2 is for then being L+2BT, wherein the span of B be the 15%-30%, the 3rd process drift 3 bilateral cutting edge gap for then being L+2CT; Wherein the span of C is 5%-10%, and the representative of 2 in the above-mentioned formula is bilateral all to be counted.
Need to prove that here target size L and material thickness T are not to refer in particular to certain value, but will decide according to concrete processing situation.But, in case the material of processing has confirmed that then the material thickness T is also inevitable has confirmed thereupon.
Following module is provided with lower bolster 5; Lower bolster 5 is provided with preprocessing drift and moulding drift 4 counterdie material-dropping hole one to one; No matter need to prove, be that the preprocessing drift or the cutting edge gap of forming punch 4 are all greater than the counterdie cutting edge gap of the counterdie material-dropping hole of correspondence.
As a kind of preferred version; As shown in Figure 1; Last module also comprises: be used to install a plurality of drifts and constitute the upper padding plate 6 and train wheel bridge 7 that is fixedly connected with it, be fixed in the upper bolster 8 of upper padding plate 6 tops, be arranged at the mounting plate 9 of upper bolster 8 tops; Be arranged at a plurality of spring boxs 10 and top block 11 between upper bolster 8 and the mounting plate 9, be arranged at train wheel bridge 7 tops and drift and be slidingly connected and supply its baffle plate that passes 12 and stripper plate 13; Upper padding plate 6 is fixed on the top of train wheel bridge 9, and baffle plate 12 is positioned at the top of stripper plate 13.Wherein, the effect of spring box 10 is to increase pressure-plate-force, preferably adopts the bigger coffee-like spring box of elastic force.
Following module also comprises: the lower bolster 14, die shoe 15, bottom seat pad 16 and the bottom plate 17 that are fixed in lower bolster 5 belows respectively successively.
With reference to Fig. 4; As a kind of preferred version; The hole wall of counterdie material-dropping hole is divided into the two parts that join from top to bottom: perpendicular to the straight section 18 of horizontal direction and the tapered section 19 that forms an angle with vertical direction; A less angle d is 4 ° in tapered section 19 and the angle that vertical direction is become, and the length D of straight section 18 is 3 to 5mm.In addition, the counterdie cutting edge gap size of the counterdie material-dropping hole of corresponding first drift 1, second drift 2, the 3rd drift 3 is respectively monolateral 10%T-15%T, 5%T-10%T, the 5%T-10%T of increasing successively on the basis in the bilateral cutting edge gap of the drift of correspondence; The counterdie cutting edge gap size of the counterdie material-dropping hole that moulding drift 4 is corresponding is in the bilateral cutting edge gap of forming punch 4 being monolateral increase 1%T-4%T on the basis of target size L of final products 20.
Lower bolster and drift all can adopt high-speed steel SKH-9 to process.
As a preferred version, the cutting edge of preprocessing drift is straight cutting edge, and the cutting edge of moulding drift 4 is a round edge.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.