CN106623583A - Tooth plate local heat punching system and technology based on indirect induction heating - Google Patents
Tooth plate local heat punching system and technology based on indirect induction heating Download PDFInfo
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- CN106623583A CN106623583A CN201611128288.6A CN201611128288A CN106623583A CN 106623583 A CN106623583 A CN 106623583A CN 201611128288 A CN201611128288 A CN 201611128288A CN 106623583 A CN106623583 A CN 106623583A
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- tooth plate
- die
- insert
- cooling water
- punch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention provides a tooth plate local heat punching system and technology based on indirect induction heating and belongs to the field of heat punching forming. The system and the technology can improve strength, hardness and wear resistance of the tooth face and the tooth bottom of a tooth plate, prevent the tooth bottom and the tooth face from generating microcracks, and facilitate the follow-up drawing and riveting working procedures. The tooth plate local heat punching system comprises an induction heating device used for heating the tooth end of the tooth plate, and a die used for carrying out local heat punching on the tooth plate subjected to induction heating. The tooth plate local heat punching technology utilizing the tooth plate local heat punching system based on indirect induction heating comprises the steps that an induction heating device is utilized for heating an unformed tooth plate; the heated unformed tooth plate is fast transferred to a female die of the heat punching die provided with a cooling water channel and an elastic lifting pin to be subjected to heat punching, in the heat punching process, cooling water is introduced into the cooling water channel, and the tooth plate is quenched in the die to the room temperature.
Description
Technical field
The present invention relates to hot Blanking Shaping field, more particularly to the tooth plate localized heat punching system based on indirect sensing heating
And technique.
Background technology
With the fast development of automobile industry, the operational stability of truck vehicle window, security and convenience are increasingly
Receive publicity, glass-frame riser is very important component in door device, the whether reliable directly shadow of performance of glass-frame riser
Ring the comfortableness to vehicle safety and client.And in the component part of glass-frame riser, sector rack is glass-frame riser
In important driving parts.Sector rack is faced with both sides problem during the manufacturing and use：On the one hand, it is fan-shaped
The quality of the manufacturing of tooth plate has very big shadow to the transmission accuracy of glass-frame riser, transmission stability and service life
Ring.On the other hand, in use, sector rack will carry out gear and engages with generator, for a long time using can be to sector
Plate causes serious abrasion, the accuracy of mesh to decline, and causes glass-frame riser to break down.Therefore the processing and manufacturing work of sector rack
Skill is particularly important to obtaining the good tooth plate of high-performance, high accuracy, wearability.
Tooth plate parts of tooth hardness requirement is high, and other parts are in order to meet the demand of staking, sleeving and riveting technique, it is desirable to hardness
Low, plasticity is good.In order to meet the demand of these two aspects, typically by three kinds of modes.First kind of way, after tooth plate cold punching is cut out, leads to
Vacuum heat treatment process is crossed, tooth plate integral hardness is controlled in 28-32HRC, although meet the requirement of sleeving and riveting, but toothed region
Divide hardness low, wear no resistance, the life-span is low, and production cost is higher；The second way, after tooth plate cold punching is cut out, by heat treatment
Technique is integrally hardened, and hardness is about 52-56HRC, is then coupled together tooth plate and other parts using light Welding, this side
The tooth plate hardness that although formula makes is higher, but defect easily occurs in flush weld, causes workpiece failure welding, and reliability is not high；The third
Mode, after cold stamping, to tooth plate local heating is carried out, and then allows teeth portion to be hardened by water-cooled, and although this technique have tooth plate
There is higher hardness, but in heating and cooling procedure, due to temperature and the impact of phase transformation, profile of tooth there occurs distortion, shadow
The accuracy of mesh of tooth plate is rung.On the one hand these three techniques all have defect, and the time that on the other hand whole technique expends is too
Long, workload and production cost be increased.
CN101486061A discloses hot forming, punching and the edge-cutting integrated technique and mould of high-duty steel part, uses
In the hot press-formed of high-duty steel part, punching and trimming.On the one hand, the technique and mould are only applicable to high-duty steel part
Punching, trimming again after first stamping, the tissue of final drip molding is consistent, and improves the intensity and hardness of whole part,
The load of blanking process can only be reduced, punching precision and shear zone quality is not ensured that, and be not easy to follow-up staking into
Shape；On the other hand, the technique is must to lead to shielding gas in resistance-heated furnace to heat plate, relatively costly, it is easy to
Produce oxide skin.CN103143630A discloses a kind of drop stamping compound die, by casting that complicated mold cooling system is embedding
Enter mould, obtained the composite die for heat-punch member shaping, punching and quenching, the mould is not suitable for local and obtains geneva
Simultaneously other positions keep original tissue to body tissue, are not easy to follow-up staking shaping.CN205324500U discloses a kind of band
The hot stamping die of cooling water channel, its cooling water channel for arranging can be cooled down with uniform cooling velocity and cooling degree,
It is not suitable for local and obtains martensitic structure yet.
The content of the invention
In order to solve the above problems, the invention provides a kind of tooth plate localized heat based on indirect sensing heating is punched system
And technique, it is possible to increase the flank of tooth of tooth plate and the intensity of bottom of the tooth, hardness, wearability, hot formed tooth plate improves glass lifting
The transmission accuracy of device, transmission stability and service life.
In order to achieve the above object, the technical solution used in the present invention is：
Tooth plate localized heat based on indirect sensing heating is punched system, including for heating the sensing of unshaped tooth plate increment
Heater and the mould for being punched unshaped tooth plate after sensing heating for localized heat；Induction heating apparatus include structure it is identical and
The internal upper sensing heating module containing load coil and lower sensing heating module, load coil is internally provided with steel
Block, unshaped tooth plate is sandwiched between bloom；Mould includes upper bolster and the die shoe being oppositely arranged up and down, fixed on upper bolster
There is the punch and blank holder for cooperating, the elastic stripper and die for cooperating, elastic stripper are fixed with die shoe
Positioned at punch lower section and identical with its shape, die is located at blank holder lower section and identical with its shape, die and elastic stripper
The internal cooling water channel being provided with along matched edges for leading to cooling water, cooling water channel both sides are provided with for placing rubber seal
The rubber seal road of circle.
As the further optimization of the present invention, adiabator layer is provided between load coil and bloom.
More preferably, the surface that bloom is contacted with unshaped tooth plate increment is provided with restriction protrusion；In induction heating apparatus
Portion is provided with temperature detector, and outside is provided with temperature controller.
Used as the further optimization of the present invention, die and elastic stripper are constituted by upper and lower insert, upper insert lower surface
The groove for cooperating for constituting cooling water channel is respectively provided with lower insert upper surface, the groove both sides of cooling water channel are provided with structure
Into the groove in seal with elastometic washer road.
As the further optimization of the present invention, it is also equipped with for leading to cooling water along matched edges inside punch and blank holder
Cooling water channel, cooling water channel both sides are provided with the rubber seal road for placing rubber seal.
Used as the further optimization of the present invention, punch and blank holder are constituted by upper and lower insert, and upper insert lower surface is with
Insert upper surface is respectively provided with the groove for cooperating for constituting cooling water channel, and the groove both sides of cooling water channel are provided with composition rubber
The groove in rubber sealing road.
Used as the further optimization of the present invention, die shoe both sides are fixedly installed slip guide pillar, and upper bolster passes through guide pin bushing set
It is connected on slip guide pillar.
Used as the further optimization of the present invention, die is divided into upper cavity die insert and lower cavity die insert, and punch is divided into upper male mould
Insert and lower punch insert, upper and lower insert is positioned by multiple pins with upper bolster or die shoe, and the upper and lower insert in pin both sides is led to
Cross multiple hexagon socket head cap screws to be fixed on upper bolster or die shoe；It is provided with the elasticity for positioning tooth plate in upper cavity die insert to determine
Position pin and multiple elastic jigger pins for supporting unshaped tooth plate.
Used as the further optimization of the present invention, elastic stripper is divided into elastic stripper insert and lower elastic stripper edge
Block, blank holder is divided into blank holder insert and lower blank holder insert, and upper and lower insert is positioned by pin, tight by hexagon socket head cap screw
Gu and it is fixed on upper bolster or die shoe by elastic unloading bolt.
Another aspect of the present invention provides the tooth that system is punched using the above-mentioned tooth plate localized heat based on indirect sensing heating
Plate localized heat punching process, comprises the steps：
(1) bloom is heated to into 900 DEG C -920 DEG C, constant temperature is placed on unshaped tooth plate increment on bloom, upper and lower sense
Heating module closure is answered to step up unshaped tooth plate heating 5-10min；
(2) the unshaped tooth plate of heating is quickly transferred to the hot blanking die for being provided with cooling water channel and elastic jigger pin
Die on, supported by elastic jigger pin, air cooling 3-10s to 700 DEG C -800 DEG C；
(3) punch comes downwards to punch-die closure, carries out hot punching, and cooling water is passed through in cooling water channel in hot blanking process,
Cooling Quenching is carried out to the teeth portion of tooth plate, punch comes downwards to mould closure pressurize.
Used as the further optimization of the present invention, the bilateral gap of punch-die is 8%-10% in step (3), and punch comes downwards to mould
Tool closure pressurize, keeps 4-5min, tooth plate that room temperature is quickly quenching in mould.
Compared with prior art, advantages of the present invention and good effect are：
1st, induction heating apparatus includes upper and lower two modules, and tooth plate is carried out to step up heating, and this mode of heating is avoided
The heating part of tooth plate forms oxide skin with air contact；On the other hand, step up heating, enable the heat above arc bloom
Quickly it is delivered on tooth plate, eliminates and need to be passed through nitrogen using resistance stove heat the step for protecting, reduces and be heated into
This, improves firing rate.
2nd, punch-die, elastic stripper, blank holder make insert, are easy to that arc water is carried out at cooperation to various pieces
Road is machined.Cooling water channel in hot blanking process, to tooth plate increment and punch-die, elastic stripper, blank holder phase interworking
Conjunction portion is that the part of punch-die shaping tooth plate profile of tooth and elastic stripper, blank holder have preferably near the part position that tooth plate shapes
Cooling effect, while not affecting other parts, cooling position has specific aim, efficiency high.
3rd, seal with elastometic washer road is provided with cooling water channel both sides, is put into rubber seal, the mistake in logical cooling water can be prevented
Cheng Zhong, because the presence of hydraulic pressure overflows the cooling water surface that vertically insert coordinates, affects hot blanking process.
4th, die is provided with elastic jigger pin, it is to avoid touch mould, heat through the unshaped tooth plate of sensing heating
Quick to scatter and disappear, realizing the part of unshaped tooth plate local heating carries out air cooling.
5th, unshaped tooth plate is locally heated to into 900 DEG C -920 DEG C, and is incubated 5-10min so as to complete austenitizing, material
The plasticity of material is improved, and formability is improved, and reduces requirement higher to forcing press in hot blanking process and the abrasion to mould.Separately
On the one hand, after making tooth plate be air cooled to 700 DEG C -800 DEG C, hot punching, and the Cooling Quenching in mould are carried out, final tooth plate teeth portion can
Complete martensitic structure is formed, its tensile strength reaches 1500MPa, hardness reaches 550-600HV, and the increase of tooth plate teeth portion strong hardness is resistance to
Mill property strengthens.Tooth plate does not heat position, still keeps original structure, it is easy to follow-up staking and sleeving and riveting technique.
6th, the bilateral gap of punch-die is 8%-10%, and punching temperature is 700 DEG C -800 DEG C, finally gives the flank of tooth wheel of tooth plate
Wide precision is higher, and punching precision is the actual size of part and the error of nominal dimension close to zero, the light of bottom of the tooth and the flank of tooth
Band accounts for the 80% of thickness of slab.Bottom of the tooth and the flank of tooth there occurs that deformation is cut in modeling in hot blanking process, realize processing hardening, improve
Strong hardness, reduces the generation of micro-crack.
Description of the drawings
Fig. 1 is the induction heating apparatus structural representation of one embodiment of the invention；
Fig. 2 is the lower sensing heating modular structure schematic diagram of one embodiment of the invention；
Fig. 3 is the lower sensing heating module sectional view of one embodiment of the invention；
Fig. 4 is the sectional view of the localized heat blanking die of one embodiment of the invention；
Fig. 5 is the top view of the localized heat blanking die of one embodiment of the invention；
Fig. 6 is the upper cavity die insert figure of one embodiment of the invention；
Fig. 7 is the lower cavity die insert figure of one embodiment of the invention；
Fig. 8 is the upper elastic discharging version insert figure of one embodiment of the invention；
Fig. 9 is the lower elastic discharging version insert figure of one embodiment of the invention；
Above in each figure：1- slip guide pillars；2- die shoes；3- upper bolsters；4- punch；41- upper male mould inserts；It is convex under 42-
Mould insert；5- blank holders；The upper blank holder inserts of 51-；Blank holder insert under 52-；6- elasticity strippers；The upper elasticity strippers of 61-
Insert；Elastic stripper insert under 62-；7- dies；71- upper cavity die inserts；72- lower cavity die inserts；73- elastic positioning pins；74-
Elastic jigger pin；8- cooling water channels；9- seals with elastometic washer road；10- hexagon socket head cap screws；11- pins；12- elasticity unloading bolts；
13- guide pin bushings；1a- unshaped tooth plates；Load coil under 2a-；The upper load coils of 3a-；4a- adiabator layers；5a- steel
Block.
Specific embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, the element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In describing the invention, it should be noted that term " on ", D score, " top ", the orientation of the instruction such as " bottom "
Or position relationship is, based on the position relationship shown in Fig. 1 and Fig. 4, to be for only for ease of the description present invention and simplify description, and not
Be indicate or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.
Based on indirect sensing heating tooth plate localized heat be punched system, including for heat tooth plate increment sensing heating fill
The mould put and be punched tooth plate after sensing heating for localized heat.Referring to Fig. 1, Fig. 1 is the sensing heating of one embodiment of the invention
Apparatus structure schematic diagram.As shown in figure 1, induction heating apparatus includes that structure is identical and upper sense of the inside containing load coil
Heating module and lower sensing heating module, load coil is answered to be internally provided with bloom, unshaped tooth plate 1a is sandwiched in bloom
Between；Tooth plate is carried out to step up heating, this mode of heating avoids the heating part of tooth plate and air contact forms oxide skin.
Used as preferred embodiment, the shape of bloom is identical with the shape of tooth plate increment, it is ensured that the heated efficiency of tooth plate increment is simultaneously saved
About material cost.
Specific heating arrangement shows referring to Fig. 2 and Fig. 3, Fig. 2 for the lower sensing heating modular structure of one embodiment of the invention
It is intended to, Fig. 3 is the sectional view of the lower sensing heating module of one embodiment of the invention.Lower load coil is internally provided with insulation
Material layer 4a, adiabator layer 4a is internally provided with bloom 5a.Step up heating, the heat above bloom can quickly be delivered to
On tooth plate, eliminate and need to be passed through nitrogen using resistance stove heat the step for protecting, reduce heating cost, improve heating
Speed.The setting of adiabator layer can be reduced heats scattering and disappearing for bloom heat through load coil, improves intensification speed
Degree, and temperature constant stability.
Used as preferred embodiment, the surface that bloom 5a is contacted with unshaped tooth plate 1a increments is provided with restriction protrusion, energy
It is enough unshaped tooth plate 1a increments to be positioned and fixed, carry out local heating.Induction heating apparatus is internally provided with temperature detector,
Outside is provided with temperature controller, can detect the temperature of heated tooth plate and arc bloom, is adjusted by temperature controller
Temperature, makes reaching heating-up temperature and keeping constant for tooth plate.
Tooth plate localized heat punching system based on indirect sensing heating is also included for tooth after localized heat punching sensing heating
The mould of plate, referring to Fig. 4, Fig. 4 is the profile of the localized heat blanking die of one embodiment of the invention.As shown in figure 4, mould bag
The upper bolster 3 and die shoe 2 being oppositely arranged up and down is included, the punch 4 and blank holder 5 for cooperating, lower mould are fixed with upper bolster 3
Be fixed with the elastic stripper 6 and die 7 for cooperating on seat 2, elastic stripper 6 be located at the lower section of punch 4 and with its shape phase
Together, die 7 is positioned at the lower section of blank holder 5 and identical with its shape, shapes along matched edges inside die 7 and elastic stripper 6
The part of tooth plate profile of tooth is provided with the cooling water channel 8 for leading to cooling water, and the both sides of cooling water channel 8 are provided with close for placing rubber
The rubber seal road 9 of seal.Cooling water channel 8 is passed through cooling water in hot blanking process, and to tooth plate increment, die, elasticity are unloaded
The position that flitch the cooperates i.e. part of die shaping tooth plate profile of tooth and elastic stripper have near the position that tooth plate shapes
Preferable cooling effect, while not affecting other parts, cooling position has specific aim, efficiency high.And the both sides of cooling water channel 8
Rubber seal is put in seal with elastometic washer road 9, can be prevented during logical cooling water, because the presence of hydraulic pressure makes cooling water
The surface that vertically insert coordinates is overflowed, and affects hot blanking process.
Referring to Fig. 6-9, Fig. 6-9 shows for the structure of the insert up and down of the die 7 and elastic stripper 6 of one embodiment of the invention
It is intended to.Used as preferred embodiment, die 7 and elastic stripper 6 are by upper and lower insert composition, upper insert lower surface and lower insert
Upper surface is respectively provided with the groove for cooperating for constituting cooling water channel 8, and the groove both sides of cooling water channel 8 are provided with composition rubber
The groove in circle sealing road 9.Form complete cooling water channel 8 and complete seal with elastometic washer road 9 after the groove fit of insert up and down.
Die 7 and elastic stripper 6 are made into upper and lower insert, is easy to enter the cooling water channel at die and elastic stripper cooperation
Row machining.
With continued reference to Fig. 6-9, as preferred embodiment, due to punch 4 it is identical with the elastic shape of stripper 6, blank holder 5
It is identical with the shape of die 7.The cooling water channel for leading to cooling water is may also set up along matched edges inside punch 4 and blank holder 5
8, the both sides of cooling water channel 8 are provided with the rubber seal road 9 for placing rubber seal.Cooling water channel 8 is in hot blanking process
In be passed through cooling water, the position that tooth plate increment, punch, blank holder are cooperated i.e. punch shaping tooth plate profile of tooth part and pressure
Flange has preferable cooling effect near the position that tooth plate shapes, and four cooling water channels coordinate, and cooling effect is more preferable.
With continued reference to Fig. 6-9, used as preferred embodiment, punch 4 and blank holder 5 are also configured as by upper and lower insert structure
The groove for cooperating for constituting cooling water channel 8, cooling water channel 8 are respectively provided with into, upper insert lower surface and lower insert upper surface
Groove both sides be provided with the groove for constituting seal with elastometic washer road 9.
With continued reference to Fig. 4, with reference to Fig. 5, Fig. 5 is the top view of the localized heat blanking die of one embodiment of the invention.Such as Fig. 4
With shown in Fig. 5, the both sides of die shoe 2 are fixedly installed slip guide pillar 1, and upper bolster 3 is socketed on slip guide pillar 1 by guide pin bushing 13,
Above-mentioned setting can be such that upper bolster 3 declines under slip guide pillar 1 and the guide effect of guide pin bushing 13 so as to drive punch 4 to decline and die shoe
Die 7 on 2 coordinates carries out hot punching.7 points of die is upper cavity die insert 71 and lower cavity die insert 72, and 4 points of punch is upper male mould
Insert 41 and lower punch insert 42.Used as preferred embodiment, upper and lower insert is by 2 pins 11 and upper bolster 3 or die shoe 2
Positioning, the upper and lower insert in the both sides of pin 11 is fixed on upper bolster 3 or die shoe 2 by 4 hexagon socket head cap screws 10；Upper cavity die insert
Upper 71 are provided with 3 elastic positioning pins 73 and 7 elastic jigger pins 74 for being used to support unshaped tooth plate for positioning tooth plate.
Pin 11 positions can upper and lower insert, and two inserts are fixed on together upper and lower die holder by hexagon socket head cap screw 10, can make the He of punch 4
Die 7 does not come off easily.Elastic jigger pin 74 on die 7 can support unshaped tooth plate 1a not contact with die 7, it is to avoid
Heat quickly scatters and disappears after the unshaped tooth plate 1a of sensing heating touches mould, so as to realize the sky of local heating part
It is cold.Elastic positioning pin 73 can be set around unshaped tooth plate 1a, tooth plate is fixed on into the ad-hoc location of die 7.
With continued reference to Fig. 4,6 points of elastic stripper is upper elastic stripper insert 61 and lower elastic stripper insert 62, is pressed
5 points of flange is upper blank holder insert 51 and lower blank holder insert 52, and upper and lower insert is positioned by pin 11, by hexagon socket head cap screw
10 are fastened and are fixed on upper bolster 3 or die shoe 2 by elastic unloading bolt 12.Elastic stripper 6 is by elasticity after punching
Clout after punching is carried out discharging by the resilience of unloading bolt 12.As preferred embodiment, punch-die insert, elastic stripper
The material of insert and blank holder insert is H13 hot die steels.
On the other hand the embodiment of the present invention is additionally provided and is punched using the above-mentioned tooth plate localized heat based on indirect sensing heating
Technique, concrete steps include：
Bloom is heated to 900 DEG C -920 DEG C by S1, and constant temperature is placed on unshaped tooth plate increment on bloom, upper and lower sensing
Heating module closure steps up unshaped tooth plate heating 5-10min.
Due to heat transfer in step 1, the temperature of bloom can be reduced, and the temperature of unshaped tooth plate can be raised, at this moment by temperature
The temperature feedback of degree detection means detection bloom adjusts the temperature of bloom so as to reach 900 DEG C -920 to temperature control equipment
DEG C, and keep constant, in order to ensure that unshaped tooth plate is heated portion of complete austenitizing, unshaped tooth plate is placed on into sense
The time for being stepped up to heat on heating module is answered to be 5-10min.
The unshaped tooth plate of heating is quickly transferred to S2 the hot blanking die for being provided with cooling water channel and elastic jigger pin
Die on, supported by elastic jigger pin, air cooling 3-10s to 700 DEG C -800 DEG C；
In step 2, elastic jigger pin supports tooth plate and avoids itself and contacting dies, and it is hot punching to be air cooled to 700 DEG C -800 DEG C
The suitable temperature of sanction.
S3 punch comes downwards to punch-die closure, carries out hot punching, and cooling water is passed through in cooling water channel in hot blanking process, right
The teeth portion of tooth plate carries out Cooling Quenching, and punch comes downwards to mould closure pressurize.
In this step, heat is punched and the Cooling Quenching in mould, and final tooth plate teeth portion can form complete martensitic structure, its
Tensile strength reaches 1500MPa, and hardness reaches 550-600HV, and tooth plate teeth portion strong hardness increase, wearability strengthens.The non-heating part of tooth plate
Position, still keeps original structure, it is easy to staking and sleeving and riveting technique.
Used as preferred embodiment, the bilateral gap of punch-die is 8%-10% in step (3), and punch comes downwards to mould closure
Pressurize, keeps 4-5min, tooth plate that room temperature is quickly quenching in mould.Under the bilateral gap, the flank profile of tooth plate is finally given
Precision is higher, and close to zero, the euphotic belt of bottom of the tooth and the flank of tooth accounts for the 80% of thickness of slab to punching precision.Bottom of the tooth and the flank of tooth were punched in heat
Cheng Zhong, there occurs that deformation is cut in modeling, realize processing hardening, improve strong hardness, reduce the generation of micro-crack.
In order to become apparent from introducing the tooth plate localized heat based on indirect sensing heating that the embodiment of the present invention is provided in detail
Punching process, illustrates below with reference to specific embodiment.
Embodiment 1
By material be B1500HS, thickness of slab for 1.6mm plate through blanking blanking die blanking punching after, formed not into
Shape tooth plate, as shown in 1a in Fig. 1, hot blanking die is arranged on WDW-200E microcomputer controlled electronic universal testers.
(1) bloom is heated to into 900-920 DEG C, constant temperature is placed on unshaped tooth plate increment on bloom 5a, upper and lower sense
Heating module closure is answered to step up unshaped tooth plate 1a heating 5-10min；
(2) the unshaped tooth plate 1a after sensing heating is quickly transferred to and is provided with cooling water channel 8 and elastic jigger pin 74
Hot blanking die die 7 on, supported by elastic jigger pin 74, air cooling 10s to 700 DEG C；
(3) Opening pressure machine, makes punch 4 with the speed of 200mm/s and comes downwards to punch-die closure, and the bilateral gap of punch-die is
8%-10%, carries out hot punching, and cooling water is passed through in cooling water channel in hot blanking process, carries out cooling to the teeth portion of tooth plate and quenches
Fire, punch comes downwards to mould closure pressurize 4-5min, and tooth plate is quickly quenching into room temperature in mould.
Embodiment 2
By material be B1500HS, thickness of slab for 1.6mm plate through blanking blanking die blanking punching after, formed not into
Shape tooth plate, as shown in 1a in Fig. 1, hot blanking die is arranged on WDW-200E microcomputer controlled electronic universal testers.
(1) bloom is heated to into 900-920 DEG C, constant temperature is placed on unshaped tooth plate increment on bloom 5a, upper and lower sense
Heating module closure is answered to step up unshaped tooth plate 1a heating 5-10min；
(2) the unshaped tooth plate 1a after sensing heating is quickly transferred to and is provided with cooling water channel 8 and elastic jigger pin 74
Hot blanking die die 7 on, supported by elastic jigger pin 74, air cooling 3 seconds to 800 DEG C；
(3) Opening pressure machine, makes punch 4 with the speed of 200mm/s and comes downwards to punch-die closure, and the bilateral gap of punch-die is
8%-10%, carries out hot punching, and cooling water is passed through in cooling water channel in hot blanking process, carries out cooling to the teeth portion of tooth plate and quenches
Fire, punch comes downwards to mould closure pressurize 4-5min, and tooth plate is quickly quenching into room temperature in mould.
Embodiment 3
By material be B1500HS, thickness of slab for 1.6mm plate through blanking blanking die blanking punching after, formed not into
Shape tooth plate, as shown in 1a in Fig. 1, hot blanking die is arranged on WDW-200E microcomputer controlled electronic universal testers.
(1) bloom is heated to into 900-920 DEG C, constant temperature is placed on unshaped tooth plate increment on bloom 5a, upper and lower sense
Heating module closure is answered to step up unshaped tooth plate 1a heating 5-10min；
(2) the unshaped tooth plate 1a after sensing heating is quickly transferred to and is provided with cooling water channel 8 and elastic jigger pin 74
Hot blanking die die 7 on, supported by elastic jigger pin 74, air cooling 6s to 750 DEG C；
(3) Opening pressure machine, makes punch 4 with the speed of 200mm/s and comes downwards to punch-die closure, and the bilateral gap of punch-die is
8%-10%, carries out hot punching, and cooling water is passed through in cooling water channel in hot blanking process, carries out cooling to the teeth portion of tooth plate and quenches
Fire, punch comes downwards to mould closure pressurize 4-5min, and tooth plate is quickly quenching into room temperature in mould.
Claims (10)
1. the tooth plate localized heat based on indirect sensing heating is punched system, it is characterised in that include for heating tooth plate increment
Induction heating apparatus and the mould for being punched tooth plate after sensing heating for localized heat；Induction heating apparatus includes that structure is identical and interior
The upper sensing heating module and lower sensing heating module of load coil is contained in portion, and load coil is internally provided with bloom
(5a), unshaped tooth plate (1a) is sandwiched between bloom (5a)；Mould includes upper bolster (3) and the die shoe being oppositely arranged up and down
(2) punch (4) and the blank holder (5) for cooperating, is fixed with upper bolster (3), die shoe is fixed with what is cooperated on (2)
Elastic stripper (6) and die (7), elastic stripper (6) is positioned at punch (4) lower section and identical with its shape, and die (7) is located at
It is below blank holder (5) and identical with its shape, it is provided with for leading to along matched edges inside die (7) and elastic stripper (6)
The cooling water channel (8) of cooling water, cooling water channel (8) both sides are provided with the rubber seal road (9) for placing rubber seal.
2. the tooth plate localized heat based on indirect sensing heating according to claim 1 is punched system, it is characterised in that sensing
Adiabator layer (4a) is provided between heating coil and bloom (5a).
3. the tooth plate localized heat based on indirect sensing heating according to claim 1 is punched system, it is characterised in that die
(7) constituted by upper and lower insert with elastic stripper (6), upper insert lower surface and lower insert upper surface are respectively provided with composition cooling
The groove for cooperating of water channel (8), groove both sides are provided with the groove for constituting seal with elastometic washer road (9).
4. the tooth plate localized heat based on indirect sensing heating according to claim 1 is punched system, it is characterised in that punch
(4) and inside blank holder (5) cooling water channel (8) for leading to cooling water, cooling water channel (8) both sides are also equipped with along matched edges
It is provided with the rubber seal road (9) for placing rubber seal.
5. the tooth plate localized heat based on indirect sensing heating according to claim 4 is punched system, it is characterised in that punch
(4) constituted by upper and lower insert with blank holder (5), upper insert lower surface and lower insert upper surface are respectively provided with composition cooling water channel
(8) the groove for cooperating, the groove both sides of cooling water channel (8) are provided with the groove for constituting seal with elastometic washer road (9).
6. the tooth plate localized heat based on indirect sensing heating according to claim 1 is punched system, it is characterised in that lower mould
Seat (2) both sides are fixedly installed slip guide pillar (1), and upper bolster (3) is socketed on slip guide pillar (1) by guide pin bushing (13).
7. the tooth plate localized heat based on indirect sensing heating according to claim 3 or 5 is punched system, it is characterised in that
Die (7) is divided into upper cavity die insert (71) and lower cavity die insert (72), and punch (4) is divided into upper male mould insert (41) and lower punch edge
Block (42), upper and lower insert is positioned by multiple pins (11) with upper bolster (3) or die shoe (2), and pin (11) both sides are inlayed up and down
Block is fixed on upper bolster (3) or die shoe (2) by multiple hexagon socket head cap screws (10)；Upper cavity die insert is provided with use on (71)
In the elastic positioning pin (73) and multiple elastic jigger pins (74) for supporting unshaped tooth plate of positioning tooth plate.
8. the tooth plate localized heat based on indirect sensing heating according to claim 3 or 5 is punched system, it is characterised in that
Elastic stripper (6) is divided into elastic stripper insert (61) and lower elastic stripper insert (62), and blank holder (5) is divided into pressure
Flange insert (51) and lower blank holder insert (52), upper and lower insert is positioned by pin (11), tight by hexagon socket head cap screw (10)
Gu and it is fixed on upper bolster (3) or die shoe (2) by elastic unloading bolt (12).
9. the tooth plate of system is punched using the tooth plate localized heat based on indirect sensing heating described in claim 1-8 any one
Localized heat punching process, it is characterised in that comprise the steps：
(1) bloom is heated to into 900 DEG C -920 DEG C, constant temperature is placed on unshaped tooth plate increment on bloom, upper and lower sensing adds
Thermal modules closure steps up unshaped tooth plate heating 5-10min；
(2) the unshaped tooth plate of heating is quickly transferred to the recessed of the hot blanking die that is provided with cooling water channel and elastic jigger pin
On mould, supported by elastic jigger pin, air cooling 3-10s to 700 DEG C -800 DEG C；
(3) punch comes downwards to punch-die closure, carries out hot punching, and cooling water is passed through to tooth plate in cooling water channel in hot blanking process
Teeth portion carry out Cooling Quenching, punch comes downwards to mould closure pressurize.
10. tooth plate localized heat punching process according to claim 9, it is characterised in that bilateral of punch-die in step (3)
Gap is 8%-10%, and punch comes downwards to mould closure pressurize, keeps 4-5min, tooth plate that room temperature is quickly quenching in mould.
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| CN201611128288.6A CN106623583B (en) | 2016-12-09 | 2016-12-09 | Tooth plate localized heat punching system based on indirect sensing heating and technique |
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| CN201611128288.6A CN106623583B (en) | 2016-12-09 | 2016-12-09 | Tooth plate localized heat punching system based on indirect sensing heating and technique |
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| CN106623583B (en) | 2018-10-02 |
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