CN103934349A - Stamping die for separating hot forming steel plates and separating process - Google Patents
Stamping die for separating hot forming steel plates and separating process Download PDFInfo
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- CN103934349A CN103934349A CN201410165027.6A CN201410165027A CN103934349A CN 103934349 A CN103934349 A CN 103934349A CN 201410165027 A CN201410165027 A CN 201410165027A CN 103934349 A CN103934349 A CN 103934349A
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Abstract
The invention relates to a stamping die for separating hot forming steel plates. The stamping die comprises a lower die base and a lower separating inlaid block fixed on the lower die base, a workpiece is located on the lower separating inlaid block, an upper separating inlaid block is fixed on an upper die base, the upper die base is fixedly connected to a rolling machine sliding block, a material pressing block is elastically connected with the upper die base, the sliding block is driven by a rolling machine to move up and down, the molded surface of a cutting edge of the lower separating inlaid block is coincident with the surface of the workpiece in shape, the hardness of the upper separating inlaid block is larger than or equal to the hardness of the lower separating inlaid block, the hardness of the two separating inlaid blocks is at least HRC 50, and the toughness is achieved. The invention further provides a corresponding separating process, and a low-speed separating process and a cutting edge point contact separating process are mainly adopted in the high-strength hot forming steel plates. The stamping die and the separating process are suitable for separating operation of the hot forming steel plates, the separating efficiency is guaranteed, and meanwhile impacts to a separating device during separation can be greatly reduced; abrasions to the separating device are reduced, the service life of the separating device is prolonged, and action force needed by separation can be substantially reduced.
Description
Technical field
The present invention relates to the separation technology field of hot forming steel plate, be specifically related to a kind of for high strength and the deburring of ultrahigh-strength steel plates and/or the diel of punching and separating technology to after hot forming is processed.
Background technology
High-strength steel sheet intensity is high, particularly in normalizing or normalizing tempered condition, there is higher comprehensive mechanical property, the application of high-strength steel sheet is the effective means of simultaneously guaranteeing lightweight and crashworthiness, therefore in the engineering industry fields such as large ship, bridge, power station equipment, middle high-pressure boiler, high-pressure bottle, rolling stock, hoisting machinery, is widely used.And hot forming steel plate is as a kind of Newly Sprouted Things, its production technology is different from common high-strength steel sheet, the production technology of hot forming steel plate generally includes and is shaped and two stages of quench cooled, wherein, shaping stage needs at high temperature once stamping by mould, the quench cooled stage need to be cooling rapidly by controlling certain cooling velocity, thereby make steel plate that the transformation from austenite microstructure to martensite microstructure occur, obtain thus high intensity and hardness, take common boron steel as example, and hot forming is processed rear its intensity and is reached 1500Mpa left and right.The tensile strength of general high-strength steel sheet is in 400MPa～450MPa left and right, and tensile strength reached 500 MPa～800MPa before the heating of hot forming steel, heating can be increased to 1300～1600 MPa after being shaped, its intensity is 3～4 times of rolled products of ordinary high-strength steel, its hardness is only second to pottery, but there is the toughness of steel, the common hot forming boron steel steel plate of take is example, intensity reaches 1500MPa, percentage elongation is 5% left and right,, considerably beyond the high-strength steel of general significance, its separating technology difficulty is far away higher than general steel plate and common high-strength steel steel plate.
Separation for hot forming steel plate, if adopt traditional press for general steel plate and common high-strength steel steel plate, control the separating technology of diel, mould structure in as disclosed in Chinese patent CN102189179A " Press Tools for Automobiles and Sheet Metal Forming Technology thereof that a kind of automation deburring and shaping are two-in-one ", its deburring punch is consistent with the cutting edge edge of deburring die and the shape of workpiece, can be in a stroke complete separating technology with certain fast speed moment, when punching press is separated, deburring die is that line contacts with workpiece, because thermoforming armor plate strength is high, fragility is larger, huge in punching press instantaneous stamping power, need thus large-tonnage press, the body in white part of automobile industry of take is example, conventionally require the press of 1000 tons of left and right could meet punching press tonnage demand, and on the other hand, because the fast speed moment with certain completes separating technology, punching press instant impact is huge, die wear is serious, maintenance frequency is high, simultaneously, in order to cushion, must on press, be equipped with cushion pad, even so, also be still difficult to solve the noise of pressure moment great variety generation and the problem of die wear, therefore, existing the separating technology of the hot forming steel plate of high-strength steel (comprising deburring and punching) is adopted to laser cutting parameter mostly.Yet, laser cutting parameter need to be used laser cutting head, and on every single-degree-of-freedom of laser cutting head, all need to arrange corresponding driving and transmission mechanism, as disclosed in Chinese patent CN201483157U " laser cutting machine ", its cutting efficiency is limited to the translational speed of laser cutting head, the separator that coordinates mould than traditional press, laser cutting parameter not only cost is high, and operating efficiency is lower.
Summary of the invention
The applicant improves for above-mentioned shortcoming of the prior art, a kind of diel and separating technology for separation of hot forming steel plate are provided, it is when guaranteeing separative efficiency, impact to separator in the time of can greatly reducing separation, reduce the wearing and tearing of separator, extend the service life of separator, and can significantly reduce separated required active force.
Technical scheme of the present invention is as follows:
The separation diel of hot forming steel plate of the present invention, the lower separation that comprises die shoe and be fixed on die shoe is inserted, workpiece is positioned on lower separation inserts, upper separation is inserted and is fixed on upper bolster, upper bolster is fixed on press slide, binder block is connected with upper bolster elasticity, slide block is driven and is moved up and down by press, the cutting edge profile that lower separation is inserted is consistent with the surface configuration of workpiece, the hardness that upper separation is inserted is more than or equal to the hardness that lower separation is inserted, and the hardness of the two is at least HRC50, and there is toughness.
Its further technical scheme is:
Described upper separation is inserted and is had angle between the tangent line of the tangent line of cutting edge any point and corresponding contact point on workpiece sideline.
The scope of described angle is 0.5 °～35 °.
When described angle is greater than 5 °, make insert tangential direction and the horizontal angle of (3) cutting edge any point of separation be less than tangential direction and the horizontal angle of the corresponding contact point on workpiece sideline.
Described press is hydraulic press or servo press.
It is 0～HRC10 that described upper separation is inserted with the scope of lower separated difference of hardness of inserting.
The separating technology of hot forming steel plate of the present invention, comprises following steps:
The first step, workpiece is positioned on lower separation inserts;
Second step, press drives slide block descending fast, and slide block is descending fast, until binder block starts to contact with workpiece;
The 3rd step, press drives slide block low speed descending, binder block workpiece pressing, upper separation is inserted and in row process, is contacted and workpiece is carried out to detached job with workpiece under the low speed, and upper the separation descending until detached job of low speed of inserting completes;
The 4th step, press drives slide block fast uplink, until slide block sets back;
The 5th step, takes out the workpiece after separation.
Its further technical scheme is:
The quick descending speed of described slide block is 1.5～50 times of the descending speed of slide block low speed.
The descending stroke of described slide block low speed is less than or equal to 150mm.
The descending velocity interval of described slide block low speed is 5mm/s～400 mm/s.
Described slide block fast velocity interval descending and fast uplink is 15mm/s～900 mm/s.
In described third step, the cutting edge that upper separation is inserted is that point contacts with workpiece, go up separation and insert and there is angle between the tangent line of the tangent line of cutting edge any point and corresponding contact point on workpiece sideline, thus in the descending process of low speed is inserted in upper separation, workpiece is separated gradually.
Technique effect of the present invention:
1, separation provided by the invention is inserted and lower separated performance of inserting (comprising that differentiation hardness distributes and toughness reguirements) by controlling upper separation with diel, make diel of the present invention can be applicable to the higher and lower hot forming steel plate of percentage elongation of intensity, changed traditional press and controlled the present situation that diel cannot be applicable to high-intensity hot forming steel plate; Upper separation is inserted and is more than or equal to the hardness that lower separation is inserted, and also makes the wearing and tearing of cutting edge be tending towards balanced, and then has promoted the quality stability of product;
2, further, separation provided by the invention is to be a cutting edge structure contacting with workpiece by the cutting edge profile that diel adopts upper separation to insert, the required separation force providing of press has significantly been provided, controlling the required theoretical stamping press of diel with traditional press compares, separation force required for the present invention can be reduced to 1%～20% of the required theoretical stamping press of traditional diel, because separation force significantly reduces, investment and the instructions for use of press of the present invention have been reduced, simultaneously, in tradition diel, big bang and the noise problem of press moment are solved, thereby on the press of diel of the present invention without being equipped with cushion pad, on the other hand, the directionality regulation that upper separation is inserted to the angle between the tangential direction of any point and the tangential direction of corresponding contact point on workpiece on cutting edge, can guarantee that the cutting edge that upper separation inserts is more smooth, while guaranteeing work, the wearing and tearing that upper separation is inserted are less,
3, further, separating technology provided by the invention adopts the separating technology of the descending separation → fast uplink of descending → low speed backhaul fast, it is adjustable to be that diel provided by the invention adopts the adjustable press of translational speed to control the translational speed that slide block and upper separation insert, thereby detached job is carried out at low-speed stage, low speed detached job, reduced upper separation to insert and lower separated impact of inserting, reduce upper separation and inserted and lower separated wearing and tearing of inserting, and then promoted the quality stability of product; On the other hand, the descending Stroke Control of low speed of the present invention, within 30mm, therefore, can't affect the operating efficiency of diel of the present invention;
4, diel of the present invention is compared with the separation by laser device of existing conventional hot forming steel plate, owing to using hydraulic means, has both reduced equipment investment, has increased substantially again production efficiency.The conventional B post of the automobile of take is example, the investment of existing high speed laser cutting machine tool is about 10 times of hydraulic pressure separating device, and aspect production efficiency, with laser cutting machine, cut a needed time of B post about 60 seconds, use hydraulic pressure separating device of the present invention, the needed disengaging time of each B post is no more than 15 seconds, and efficiency has improved 3 times.
Accompanying drawing explanation
Fig. 1 is the separated structural representation with diel of the present invention.
Fig. 2 schematically shows upper separation of the present invention cutting edge profile, the lower separation structural representation of relation of cutting edge profile and workpiece section configuration of inserting of inserting, and in figure, to take automobile door bumper hot forming boron steel workpiece be example to workpiece.
Fig. 3 be in Fig. 2 upper separation insert cutting edge profile with workpiece section for putting the enlarged diagram contacting.
Fig. 4 is of the present invention separated with press slide displacement curve and stamping press schematic diagram in diel heat of dissociation shaping steel plate process, and in figure, also contrast has shown press slide displacement curve and stamping press in traditional press control diel heat of dissociation shaping steel plate process.
Wherein: 1, die shoe; 2, lower separation is inserted; 3, upper separation is inserted; 4, binder block; 5, upper bolster; 6, slide block; 7, workpiece.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
See Fig. 1, the separation of the disclosed hot forming steel plate of the preferred embodiment of the present invention comprises die shoe 1 with diel and the lower separation that is fixed on die shoe 1 inserts 2, workpiece is positioned at lower separation and inserts on 2, upper separation is inserted and 3 is fixed on upper bolster 5, upper bolster 5 is fixed on slide block 6, binder block 4 is connected with upper bolster 5 elasticity, slide block 6 is driven by press, lower movement, insert 2 cutting edge profile of lower separation is consistent with the surface configuration of workpiece, insert 3 hardness of upper separation is more than or equal to insert 2 hardness of lower separation, and the hardness of the two is at least HRC50, and there is toughness, particularly, it 3 is 0～HRC10 with the scope of lower separated 2 the difference of hardness of inserting that described upper separation is inserted.Wherein, described press is commercially available prior art, and described press adopts hydraulic press or servo press.
Further, see Fig. 2, described upper separation is inserted and is had angle between the tangent line of the tangent line of 3 cutting edge any points and corresponding contact point on workpiece 7 sidelines, see Fig. 3, the insert surface configuration of 3 cutting edge profile shape and workpiece 7 of upper separation is inconsistent, and between the two, there is inclination angle, thus, upper separation inserts 3 while contacting with workpiece 7, existence due to described inclination angle, insert 3 cutting edge of upper separation gradually forms point with workpiece 7 and contacts, gradually form shearing force and shear workpiece 7, particularly, in Fig. 3, above separation insert 3 with the contact point A of workpiece 7 be example, inclination alpha represents the angle between the tangential direction AF of tangential direction AE that the A on workpiece 7 section sidelines orders and the upper separated corresponding contact point on 3 inserted, angle α is according to the thickness of workpiece, shape, separated (deburring or punching) length and changing, be preferably 0.5 °～35 °.Because upper separation is inserted and 3 contacted with needing the waste part separating on workpiece 7, the insert surface configuration of 3 cutting edge profile shape and workpiece 7 of therefore upper separation is inconsistent, on the forming shape of workpiece 7 without any impact.
Further, described angle α regulation is had to directionality, see Fig. 3, when angle α is greater than 5 °, upper separation is inserted the tangent line of 3 cutting edge any points during to the tangent line rotation of the corresponding contact point on workpiece 7 section sidelines, for turning clockwise, and when angle α is less than 5 °, upper separation is inserted the tangent line of 3 cutting edge any points during to the tangent line rotation of the corresponding contact point on workpiece 7 section sidelines, both can be for having turned clockwise, and also can be for being rotated counterclockwise.Angle α has directionality, in order to guarantee that upper separation any tangential direction and the horizontal angle of 3 cutting edges of inserting is less than tangential direction and the horizontal angle of corresponding contact point on workpiece 7 sidelines, so, make insert 3 cutting edge of separation more smooth, during work, less to insert 3 wearing and tearing of upper separation.
The separator that the separated diel of hot forming steel plate of the present invention is controlled diel to traditional press for general steel plate and rolled products of ordinary high-strength steel plate improves, the way that is less than the separated hardness of inserting on counterdie from the separated hardness of inserting on traditional patrix is different, the present invention by upper separation insert 3 and lower separation insert 2 hardness control HRC50 and more than, and make insert 2 hardness of lower separation be no more than insert 3 hardness of separation, so, diel after improving can be applicable to the separation of the hot forming steel plate that high strength and percentage elongation are low, and be unlikely under very large separation force, by upper separation insert 3 with lower separated insert 2 heavy wears or damage, on the other hand, in order further to reduce required separation force, separation is inserted and between 3 cutting edge profile shape and the surface configuration of workpiece 7, have inclination angle, upper separation inserts 3 while contacting with workpiece 7, existence due to described inclination angle, insert 3 cutting edge of upper separation gradually forms point with workpiece 7 and contacts, gradually form shearing force and shear workpiece 7, thereby reach the object that reduces required separation force, thereby investment and the instructions for use of press of the present invention have significantly been reduced, simultaneously, active force required during due to separation reduces, big bang and the noise problem of press moment are solved, save the cushion pad being equipped with on press in traditional diel.
On this basis, the invention also discloses and utilize the technique of diel heat of dissociation shaping steel plate for the separation of above-mentioned hot forming steel plate, it comprises following steps:
The first step, is positioned at lower separation by workpiece 7 and inserts on 2, and insert 2 cutting edge profile of lower separation is consistent with the surface configuration of workpiece 7, and lower separation 2 parts not separated with workpiece 7 of inserting contact;
Second step, press drives slide block 6 descending fast, and it is 3 together descending fast that slide block 5 drives binder blocks 4 and upper separation to insert, until binder block 4 starts to contact with workpiece 7;
The 3rd step, press drives slide block 6 low speed descending, binder block 4 workpiece pressings, due to binder block 4 and the elasticity annexation of slide block 6 for being connected by flexible members such as springs, after binder block 4 workpiece pressings, stop descending, and upper separation is inserted, along with slide block 6, together low speed is descending in 3 continuation, and upper separation is inserted and 3 in row process, contacted and workpiece 7 is carried out to detached job (punching and/or deburring) with workpiece 7 under the low speed, and upper the separation descending until detached job of 3 low speed of inserting completes;
The 4th step, press drives slide block 6 fast uplinks, until slide block 6 sets back;
The 5th step, from lower separation 2 workpiece 7 that take out after separation of inserting.
" low-speed motion " in " rapid movement " in above-mentioned separating technology second step and the 4th step and third step, so-called " fast " and " at a slow speed " is not all constant fast speed or low velocity, wherein, " rapid movement " refers to press in second step and drives slide block 6 from inactive state, to accelerate to come downwards to the quick descending process of binder block 4 contact workpiece 7, and the 4th press drive block 6 in step from the static lowest point of closure, accelerate to go upward to the fast uplink back off procedure of peak, " low-speed motion " refers to press in third step and drives slide block 6 to the closed static lowest point of arrival, to complete the microinching process of workpiece 7 punching separation from binder block 4 contact workpiece 7.Wherein, not only the speed peak-peak of rapid movement is greater than the speed peak-peak of low-speed motion, and the average speed of rapid movement is also greater than the average speed of low-speed motion, forms thus relative " fast " and " low speed " concept.
Particularly, in order to guarantee to utilize for of the present invention minute the operating efficiency of diel heat of dissociation shaping steel plate, making the quick descending speed of described slide block 6 is 1.5～50 times of the descending speed of slide block 6 low speed, preferably 3～20 times, the descending velocity interval of slide block 6 low speed is preferably 5mm/s～400mm/s, the quick velocity interval descending and fast uplink of slide block 6 is preferably 15mm/s～900 mm/s, the descending stroke of slide block 6 low speed is less than or equal to 150mm, wherein, so-called " speed of rapid movement " and " speed of low-speed motion ", refer to respectively in rapid movement process, speed peak-peak in low-speed motion process.
It is binder block 4 and upper separated 3 the movement of inserting that the separating technology of hot forming steel plate of the present invention adopts press, workpiece pressing provides power source with separated workpiece, and make the translational speed of slide block 6 adjustable, thereby make binder block 4 adjustable with upper separated 3 the translational speed of inserting, in the detached job stage, adopt the descending detached job that carries out of low speed, to upper separation insert 3 with lower separated 2 the impact energy of inserting much smaller than traditional patrix along with press slide completes the impact of detached job with certain fast speed descending moment always, reduced to upper separation insert 3 with lower separated 2 the wearing and tearing of inserting, extended the separated service life with diel of the present invention.
Further, similarly, while thering is angle when the tangent line of the tangent line of 3 cutting edge any points and corresponding contact point on workpiece sideline is inserted in separation of the present invention with the upper separation in diel between, in described third step, upper separation inserts 3 while contacting with workpiece 7, insert 3 cutting edge and workpiece 7 of upper separation contact for point, thereby in the descending process of 3 low speed is inserted in upper separation, workpiece 7 is separated gradually, gets final product and complete sequentially successively detached job so that each separating part of workpiece 7 has.This not only significantly reduces required separation force, big bang and the noise problem of press moment have been solved, and, in the detached job stage, because workpiece 7 is gradually separated under less separating force effect, therefore, workpiece 7 stressed less, less to the impact of workpiece 7 and wearing and tearing, thereby guaranteeing under the prerequisite of effective detached job, can improve the quality stability of separated rear workpiece, for the wearing and tearing that further reduce upper separation to insert 3 cutting edges, improve the quality stability of product, the described angle regulation that upper separation is inserted between the tangent line of the tangent line of 3 cutting edge any points and corresponding contact point on workpiece sideline has directionality.
The specific embodiment of below quoting in engineering practice describes hydraulic pressure separating device of the present invention and separating technology:
See Fig. 3, workpiece 7 is thickness 1.5mm, length 1.2m, section configuration automobile door bumper hot forming boron steel workpiece as shown in Figure 3, Tensile strength 1500MPa, for this type of workpiece, as follows according to the computing formula of the required theoretical stamping press of the separator of traditional press control diel:
P=KLtτ
Wherein, P is theoretical stamping press, unit is N, L is the separated peripheral length of workpiece, unit is mm, t is the thickness of workpiece, unit is mm, τ is Tensile strength, unit is MPa, K is coefficient, generally getting K is 1.3 (character and thickness by material are determined), according to above-mentioned computing formula, by thickness of workpiece value 1.5 mm of the present embodiment, length 1.2m, tensile strength 1500MPa, COEFFICIENT K is that 1.3 substitution above formulas calculate, the required theoretical stamping press of tradition separator is about 358 tons, the detached job that requirement utilizes separation of the present invention in an operation, deburring to be carried out in the two ends of high-intensity hot forming workpiece 7 with diel and separating technology.
Embodiment mono-
The present embodiment is the preferred embodiments of the present invention, it is the hydraulic press of 60 tons that described separation is selected tonnage with diel, and without being equipped with cushion pad, pressure is adjustable within the scope of 0～60 ton, speed is adjustable at 0～450mm/s, on it, insert 3 stroke of separation is 600mm, the stroke of binder block 4 is 30mm, pressure-plate-force is 4 tons, on concrete material selection, described upper separation insert 3 and insert 2 cutting edge material of lower separation can adopt SKD61, CALDIE, the hardness such as V4E are at HRC50 and above, and there is the high-quality mould steel of toughness, and control lower separation and insert and 2 be no more than insert 3 hardness of separation, concrete separation process is as follows:
The first step, workpiece is thrown in: in 0.5 second, workpiece 7 is thrown in fast and be positioned at lower separation and insert on 2;
Second step, descending fast: hydraulic press drives slide block 6 descending fast, take the most descendingly fast as the speed of 450mm/s at a high speed, binder block 4 starts to contact with workpiece 7, and in this step, the quick descending stroke of slide block 6 is 570mm;
The 3rd step, deburring: 20 tons of the tonnages that hydraulic press is set, hydraulic press drives slide block 6 descending with the speed low speed of 30mm/s, binder block 4 workpiece pressings, due to binder block 4 and the elasticity annexation of slide block 6 for being connected by flexible members such as springs, after binder block 4 workpiece pressings, stop descending, and upper separation is inserted, along with slide block 6, together low speed is descending in 3 continuation, upper separation is inserted and 3 in row process, is contacted and workpiece 7 is carried out to deburring operation with workpiece 7 under the low speed, upper the separation descending until deburring operation of 3 low speed of inserting completes, because upper separation 3 cutting edge profiles and the workpiece 7 of inserting contacts for point, in the descending process of 3 low speed is inserted in upper separation, workpiece 7 is separated gradually, can complete sequentially successively deburring operation so that each separating part of workpiece 7 has, the deburring sword of workpiece 7 shown in Fig. 3 shows enters order for A(C) to B(D), in this step, the descending stroke of slide block 6 low speed is 30mm,
The 4th step, quick return, pickup: hydraulic system 6 drives top shoe with the speed fast uplink of 450mm/s, until slide block 6 sets back, in this step, the stroke of slide block 6 fast uplinks is 600mm;
The 5th step, takes out workpiece: in 0.5 second, the workpiece 7 carrying out after deburring is taken out fast.
From above-described embodiment, can find out, the present embodiment by control upper separation insert 3 with lower separated 2 the performance (comprising hardness and toughness reguirements) of inserting, make of the present inventionly separatedly with diel, can be applicable to the automobile door bumper hot forming boron steel workpiece that tensile strength described in the present embodiment reaches 1500MPa, further, adopt the translational speed of the adjustable hydraulic press control press slide 6 of translational speed adjustable, thereby deburring operation is carried out at low-speed stage, low speed deburring, reduced to upper separation insert 3 with lower separated 2 the impact of inserting, reduced upper separation insert 3 with lower separated 2 the wearing and tearing of inserting, further, separation 3 the cutting edge profile cutting edge structure for contacting for point with workpiece of inserting in employing, the required deburring active force providing of hydraulic press has significantly been provided, the tonnage of the hydraulic press that the present embodiment is selected is 60 tons, the theoretical stamping press required with traditional press control diel separator is above-mentioned 358 tons and compares, the required deburring active force of the present embodiment is reduced to 16.8% of the required theoretical stamping press of traditional diel, see Fig. 4, in figure, transverse axis represents the detached job stage, in figure, left side vertical pivot represents the displacement of press slide, in figure, the right vertical pivot represents the active force of required separation, wherein the stage of vertical pivot arrow top mark represents that traditional press controls diel and be used for each detached job stage of steel plate of separated same intensity, the stage mark of transverse axis below represents to use separation of the present invention to be used for each detached job stage of steel plate of separated same intensity with diel, clearly, at detached job on the stage, whole detached job stage stroke is identical with traditional diel with the used time, difference is the asynchronism(-nization) that separation phase is used, and in required separation force, because traditional diel is large stamping press moment to complete separation with certain fast speed punching press, and it is of the present invention separated separated owing to adopting point to contact cutting edge with diel, by long stroke and little separation force, complete detached job, therefore, separation force required for the present invention is much smaller than the required theoretical stamping press of traditional diel, because deburring active force significantly reduces, thereby on hydraulic press without being equipped with cushion pad.
Embodiment bis-
It is separated described in the present embodiment that with diel, to select tonnage be the hydraulic press of 60 tons, and without being equipped with cushion pad, pressure is adjustable within the scope of 0～60 ton, speed is adjustable at 0～450mm/s, on it, insert 3 stroke of separation is 600mm, the stroke of binder block 4 is 30mm, pressure-plate-force is 4 tons, on concrete material selection, described upper separation insert 3 and insert 2 cutting edge material of lower separation can adopt SKD61, CALDIE, the hardness such as V4E are at HRC50 and above, and there is the high-quality mould steel of toughness, and control lower separation and insert and 2 be no more than insert 3 hardness of separation, concrete separation process is as follows:
The first step, workpiece is thrown in: in 0.5 second, workpiece 7 is thrown in fast and be positioned at lower separation and insert on 2;
Second step, descending fast: hydraulic press drives slide block 6 descending fast, take the most descendingly fast as the speed of 15mm/s at a high speed, binder block 4 starts to contact with workpiece 7, and in this step, the quick descending stroke of slide block 6 is 570mm;
The 3rd step, deburring: 20 tons of the tonnages that hydraulic press is set, hydraulic press drives slide block 6 descending with the speed low speed of 5mm/s, binder block 4 workpiece pressings, due to binder block 4 and the elasticity annexation of slide block 6 for being connected by flexible members such as springs, after binder block 4 workpiece pressings, stop descending, and upper separation is inserted, along with slide block 6, together low speed is descending in 3 continuation, upper separation is inserted and 3 in row process, is contacted and workpiece 7 is carried out to deburring operation with workpiece 7 under the low speed, upper the separation descending until deburring operation of 3 low speed of inserting completes, because upper separation 3 cutting edge profiles and the workpiece 7 of inserting contacts for point, in the descending process of 3 low speed is inserted in upper separation, workpiece 7 is separated gradually, can complete sequentially successively deburring operation so that each separating part of workpiece 7 has, the deburring sword of workpiece 7 shown in Fig. 3 shows enters order for A(C) to B(D), in this step, the descending stroke of slide block 6 low speed is 30mm,
The 4th step, quick return, pickup: hydraulic system 6 drives top shoe with the speed fast uplink of 15mm/s, until slide block 6 sets back, in this step, the stroke of slide block 6 fast uplinks is 600mm;
The 5th step, takes out workpiece: in 0.5 second, the workpiece 7 carrying out after deburring is taken out fast.
This embodiment by control upper separation insert 3 with lower separated 2 the performance (comprising hardness and toughness reguirements) of inserting, make of the present inventionly separatedly with diel, can be applicable to the automobile door bumper hot forming boron steel workpiece that tensile strength described in the present embodiment reaches 1500MPa; Further, adopt the translational speed of the adjustable hydraulic press control press slide 6 of translational speed adjustable, thereby deburring operation is carried out at low-speed stage, low speed deburring, reduced to upper separation insert 3 with lower separated 2 the impact of inserting, reduced upper separation insert 3 with lower separated 2 the wearing and tearing of inserting; Further, separation 3 the cutting edge profile cutting edge structure for contacting for point with workpiece of inserting in employing, the required deburring active force providing of hydraulic press has significantly been provided, the tonnage of the hydraulic press that the present embodiment is selected is 60 tons, the theoretical stamping press required with traditional press control diel separator is above-mentioned 358 tons and compares, the required deburring active force of the present embodiment is reduced to 16.8% of the required theoretical stamping press of traditional diel, because deburring active force significantly reduces, thus in hydraulic system 6 without being equipped with cushion pad.Than the technique effect of embodiment mono-, at whole detached job on the used time, due to equal relative the reducing of the speed of rapid movement and low-speed motion, the used time of this embodiment obviously increases.
Embodiment tri-
It is separated described in the present embodiment that with diel, to select tonnage be the hydraulic press of 60 tons, and without being equipped with cushion pad, pressure is adjustable within the scope of 0～60 ton, speed is adjustable at 0～600mm/s, on it, insert 3 stroke of separation is 600mm, the stroke of binder block 4 is 30mm, pressure-plate-force is 4 tons, on concrete material selection, described upper separation insert 3 and insert 2 cutting edge material of lower separation can adopt SKD61, CALDIE, the hardness such as V4E are at HRC50 and above, and there is the high-quality mould steel of toughness, and control lower separation and insert and 2 be no more than insert 3 hardness of separation, concrete separation process is as follows:
The first step, workpiece is thrown in: in 0.5 second, workpiece 7 is thrown in fast and be positioned at lower separation and insert on 2;
Second step, descending fast: hydraulic press drives slide block 6 descending fast, take the most descendingly fast as the speed of 600mm/s at a high speed, binder block 4 starts to contact with workpiece 7, and in this step, the quick descending stroke of slide block 6 is 570mm;
The 3rd step, deburring: 20 tons of the tonnages that hydraulic press is set, hydraulic press drives slide block 6 descending with the speed low speed of 400mm/s, binder block 4 workpiece pressings, due to binder block 4 and the elasticity annexation of slide block 6 for being connected by flexible members such as springs, after binder block 4 workpiece pressings, stop descending, and upper separation is inserted, along with slide block 6, together low speed is descending in 3 continuation, upper separation is inserted and 3 in row process, is contacted and workpiece 7 is carried out to deburring operation with workpiece 7 under the low speed, upper the separation descending until deburring operation of 3 low speed of inserting completes, because upper separation 3 cutting edge profiles and the workpiece 7 of inserting contacts for point, in the descending process of 3 low speed is inserted in upper separation, workpiece 7 is separated gradually, can complete sequentially successively deburring operation so that each separating part of workpiece 7 has, the deburring sword of workpiece 7 shown in Fig. 3 shows enters order for A(C) to B(D), in this step, the descending stroke of slide block 6 low speed is 30mm,
The 4th step, quick return, pickup: hydraulic system 6 drives top shoe with the speed fast uplink of 600mm/s, until slide block 6 sets back, in this step, the stroke of slide block 6 fast uplinks is 600mm;
The 5th step, takes out workpiece: in 0.5 second, the workpiece 7 carrying out after deburring is taken out fast.
This embodiment by control upper separation insert 3 with lower separated 2 the performance (comprising hardness and toughness reguirements) of inserting, make of the present inventionly separatedly with diel, can be applicable to the automobile door bumper hot forming boron steel workpiece that tensile strength described in the present embodiment reaches 1500MPa; Further, adopt the translational speed of the adjustable hydraulic press control press slide 6 of translational speed adjustable, thereby deburring operation is carried out at low-speed stage, low speed deburring, reduced to upper separation insert 3 with lower separated 2 the impact of inserting, reduced upper separation insert 3 with lower separated 2 the wearing and tearing of inserting; Further, separation 3 the cutting edge profile cutting edge structure for contacting for point with workpiece of inserting in employing, the required deburring active force providing of hydraulic press has significantly been provided, the tonnage of the hydraulic press that the present embodiment is selected is 60 tons, the theoretical stamping press required with traditional press control diel separator is above-mentioned 358 tons and compares, the required deburring active force of the present embodiment is reduced to 16.8% of the required theoretical stamping press of traditional diel, because deburring active force significantly reduces, thus in hydraulic system 6 without being equipped with cushion pad.Technique effect than embodiment mono-, at whole detached job on the used time, the used time of this embodiment reduces to some extent, improved production efficiency, but due to the low speed detached job stage starting to contact with workpiece, because its low-speed motion speed is obviously greater than the low speed disengaging movement speed in embodiment mono-, therefore, on a basis of contact cutting edge separating technology, than embodiment mono-, it inserts 3 relatively large with quiet separated 2 the wearing and tearing meeting of inserting for separation.
Embodiment tetra-
It is separated described in the present embodiment that with diel, to select tonnage be the hydraulic press of 60 tons, and without being equipped with cushion pad, pressure is adjustable within the scope of 0～60 ton, speed is adjustable at 0～900mm/s, on it, insert 3 stroke of separation is 600mm, the stroke of binder block 4 is 30mm, pressure-plate-force is 4 tons, on concrete material selection, described upper separation insert 3 and insert 2 cutting edge material of lower separation can adopt SKD61, CALDIE, the hardness such as V4E are at HRC50 and above, and there is the high-quality mould steel of toughness, and control lower separation and insert and 2 be no more than insert 3 hardness of separation, concrete separation process is as follows:
The first step, workpiece is thrown in: in 0.5 second, workpiece 7 is thrown in fast and be positioned at lower separation and insert on 2;
Second step, descending fast: hydraulic press drives slide block 6 descending fast, take the most descendingly fast as the speed of 900mm/s at a high speed, binder block 4 starts to contact with workpiece 7, and in this step, the quick descending stroke of slide block 6 is 570mm;
The 3rd step, deburring: 20 tons of the tonnages that hydraulic press is set, hydraulic press drives slide block 6 descending with the speed low speed of 18mm/s, binder block 4 workpiece pressings, due to binder block 4 and the elasticity annexation of slide block 6 for being connected by flexible members such as springs, after binder block 4 workpiece pressings, stop descending, and upper separation is inserted, along with slide block 6, together low speed is descending in 3 continuation, upper separation is inserted and 3 in row process, is contacted and workpiece 7 is carried out to deburring operation with workpiece 7 under the low speed, upper the separation descending until deburring operation of 3 low speed of inserting completes, because upper separation 3 cutting edge profiles and the workpiece 7 of inserting contacts for point, in the descending process of 3 low speed is inserted in upper separation, workpiece 7 is separated gradually, can complete sequentially successively deburring operation so that each separating part of workpiece 7 has, the deburring sword of workpiece 7 shown in Fig. 3 shows enters order for A(C) to B(D), in this step, the descending stroke of slide block 6 low speed is 30mm,
The 4th step, quick return, pickup: hydraulic system 6 drives top shoe with the speed fast uplink of 900mm/s, until slide block 6 sets back, in this step, the stroke of slide block 6 fast uplinks is 600mm;
The 5th step, takes out workpiece: in 0.5 second, the workpiece 7 carrying out after deburring is taken out fast.
This embodiment by control upper separation insert 3 with lower separated 2 the performance (comprising hardness and toughness reguirements) of inserting, make of the present inventionly separatedly with diel, can be applicable to the automobile door bumper hot forming boron steel workpiece that tensile strength described in the present embodiment reaches 1500MPa; Further, adopt the translational speed of the adjustable hydraulic press control press slide 6 of translational speed adjustable, thereby deburring operation is carried out at low-speed stage, low speed deburring, reduced to upper separation insert 3 with lower separated 2 the impact of inserting, reduced upper separation insert 3 with lower separated 2 the wearing and tearing of inserting; Further, separation 3 the cutting edge profile cutting edge structure for contacting for point with workpiece of inserting in employing, the required deburring active force providing of hydraulic press has significantly been provided, the tonnage of the hydraulic press that the present embodiment is selected is 60 tons, the theoretical stamping press required with traditional press control diel separator is above-mentioned 358 tons and compares, the required deburring active force of the present embodiment is reduced to 16.8% of the required theoretical stamping press of traditional diel, because deburring active force significantly reduces, thus in hydraulic system 6 without being equipped with cushion pad.Than the technique effect of embodiment mono-, at whole detached job, on the used time, the used time of this embodiment increases a little to some extent, and the time of increase is a contact cutting edge detached job stage.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention, referring to claim, within protection scope of the present invention, can be done any type of modification.
Claims (12)
1. the separation diel of hot forming steel plate, comprise die shoe (1) and be fixed on lower separation on die shoe (1) insert (2), workpiece is positioned at lower separation and inserts on (2), upper separation insert (3) be fixed on upper bolster (5), upper bolster (5) is fixed on slide block (6), binder block (4) is connected with upper bolster (5) elasticity, slide block (6) is driven by press, lower movement, the insert cutting edge profile of (2) of lower separation is consistent with the surface configuration of workpiece, it is characterized in that: the insert hardness of (3) of upper separation is more than or equal to the insert hardness of (2) of lower separation, and the hardness of the two is at least HRC50, and there is toughness.
2. by the separation diel of hot forming steel plate claimed in claim 1, it is characterized in that: described upper separation is inserted and had angle between the tangent line of the tangent line of (3) cutting edge any point and corresponding contact point on workpiece sideline.
3. by the separation diel of hot forming steel plate claimed in claim 2, it is characterized in that: the scope of described angle is 0.5 °～35 °.
4. by the separation diel of hot forming steel plate claimed in claim 2, it is characterized in that: when described angle is greater than 5 °, make insert tangential direction and the horizontal angle of (3) cutting edge any point of separation be less than tangential direction and the horizontal angle of the corresponding contact point on workpiece sideline.
5. by the separation diel of hot forming steel plate claimed in claim 1, it is characterized in that: described press is hydraulic press or servo press.
6. by the separation diel of hot forming steel plate claimed in claim 1, it is characterized in that: described upper separation insert (3) be 0～HRC10 with the scope of the difference of hardness of lower separated inserting (2).
7. utilize a technique for diel heat of dissociation shaping steel plate for the separation of the hot forming steel plate described in claim 1, it is characterized in that, comprise following steps:
The first step, workpiece is positioned at lower separation and inserts on (2);
Second step, press drives slide block (6) descending fast, and slide block (6) is descending fast, until binder block (4) starts to contact with workpiece;
The 3rd step, press drives slide block (6) low speed descending, binder block (4) workpiece pressing, upper separation insert (3) in row process, contact with workpiece and workpiece carried out to detached job under the low speed, upper the separation descending until detached job of (3) low speed of inserting completes;
The 4th step, press drives slide block (6) fast uplink, until slide block (6) sets back;
The 5th step, takes out the workpiece after separation.
8. by the separating technology of hot forming steel plate claimed in claim 7, it is characterized in that: the quick descending speed of described slide block (6) is 1.5～50 times of the descending speed of slide block (6) low speed.
9. by the separating technology of hot forming steel plate claimed in claim 7, it is characterized in that: the descending stroke of described slide block (6) low speed is less than or equal to 150mm.
10. by the separating technology of hot forming steel plate claimed in claim 7, it is characterized in that: the descending velocity interval of described slide block (6) low speed is 5mm/s～400 mm/s.
11. by the separating technology of hot forming steel plate claimed in claim 7, it is characterized in that: described slide block (6) fast velocity interval descending and fast uplink is 15mm/s～900 mm/s.
12. by the separating technology of the hot forming steel plate described in the arbitrary claim of claim 7 to 11, it is characterized in that: in described third step, insert cutting edge and the workpiece of (3) of upper separation contacts for point, go up separation and insert and there is angle between the tangent line of the tangent line of (3) cutting edge any point and corresponding contact point on workpiece sideline, thus in the descending process of (3) low speed is inserted in upper separation, workpiece is separated gradually.
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Application publication date: 20140723 |