CN2685058Y

CN2685058Y - Adjustable hydraulic press

Info

Publication number: CN2685058Y
Application number: CN 200420011577
Authority: CN
Inventors: 宋玉泉; 王明辉; 管晓芳
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2004-02-23
Filing date: 2004-02-23
Publication date: 2005-03-16
Anticipated expiration: 2014-02-23

Abstract

The utility model relates to an adjustable hydraulic press of double acting both on top and bottom, especially suitable to the cold forming or hot forming of metal ductility in punching, final finishing, flanging, drawing and extending sheet material, blocked forging and compounding a plurality of techniques. The utility model is composed by a post, an upper beam, a main slide block, a blank holder slide block, a working bench, a float working bench and a lower beam. A main cylinder hydraulic cavity solidly set on the upper beam is communicated with an auxiliary cylinder hydraulic cavity solidly set on the upper beam, and a plunger piston drives and connects with the main slide block. A hydraulic cavity solidly set on a gas-liquid accumulator of the main slide block is communicated with a hydraulic cavity solidly set on a blank holder cylinder of the main slide block, and a plunger piston of the blank holder cylinder drives and connects with the blank holder slide block. A plunger piston of an ejecting cylinder solidly set on the lower beam drives and connects with the float working bench. The utility model greatly simplifies the structure of hydraulic system of the existing hydraulic press, decreases energy loss, and increases the accuracy and production efficiency of processing work piece.

Description

Be two moving adjustable hydraulic machines up and down

Technical field:

The utility model relates to the hydraulic press of Metal Forming, the plastic deformation cold forming of be applicable to particularly that stamping-out, finishing, flange, sheet material draw, block forging and several technology are compound or hot formedly be two moving adjustable hydraulic machines up and down.

Background technology:

In the plastic forming technology of modern times manufacturing, hydraulic press occupies considerable status, hydraulic press as Figure 14 is that existing top is for two moving, the bottom is the typical hydraulic machine of single action, it is by topping up cylinder 64, master cylinder 65, entablature 66, flanging cylinder 67, master slider 68, blankholder slide 69, manipulation device 70, hydraulic system 71, workbench 72, liftout tank 73 is formed, this hydraulic press, blankholder slide 69 flanging of employing above workbench 72, master slider 68 is shaped, below workbench, has only liftout tank 73, and liftout tank can only play the liftout effect, can not carry out the combined shaping of reverse flanging simultaneously; Be used for that block forging, sheet material draw, finishing, side cut, punching, flange, and the combination process between them etc., in order to simplify working process, improve forming efficiency, stock utilization and workpiece accuracy, all need carry out being up and down on two moving hydraulic presses, this has just increased the complexity and the manufacturing cost of hydraulic press structure, but also exists some technical barriers to need to be resolved hurrily.

Summary of the invention:

The utility model is for solving the problem of above-mentioned existence, proposes a kind of can forward and reverse flanging and shaping be two adjustable hydraulic machines that move up and down, with enhance productivity, easy operating, be more suitable for the technical need of combined forming process to process equipment.

Above-mentioned purpose of the present utility model is achieved in that accompanying drawings is as follows:

A kind of pair moving adjustable hydraulic machines that are up and down, form by main body and hydraulic system, its main body comprises column 8 and places the entablature 1 that is fixed on column 8 upper and lower sides, sill 21, be the master slider 9 that is slidingly matched with column 8, blankholder slide 1, and be contained in stationary work-table 14 and floating work bench 15 on the column 8, the plunger 7 that is installed in the plunger 6 of the master cylinder 2 in the entablature 1 and four auxiliary cylinders 5 that are installed in entablature 1 drives and is connected master slider 9, the hydraulic cavities that is installed in the gas-liquid accumulator 11 in the master slider 9 has communicating pipe 32 to be communicated with the hydraulic cavities of flanging cylinder 10 in being installed in master slider 9, the plunger 12 driving connection flanging of flanging cylinder 10 are slided and are determined 13, can clamp moulds of industrial equipment or eject mould in the upper surface of liftout tank plunger 22, be provided with the annular groove 23 of jack-up floating work bench on the top of liftout tank plunger 22, annular groove 23 can load and unload snap ring, after loading onto snap ring, liftout tank plunger 22 can be with floating work bench 15 jack-up to predetermined height.

Described stationary work-table 14 is located between blankholder slide 13 and the floating work bench 15, floating work bench 15 is located between stationary work-table 14 and the sill 21, floating work bench 15 is with column 8 and is slidingly matched, liftout tank 17 is installed on the sill 21, and the plunger 22 of liftout tank 17 can pass the centre bore of floating work bench 15.

The hydraulic pressure of the hydraulic oil 33 of hydraulic cavities balances each other in the air pressure of the described air bag 34 mesohigh nitrogen 35 that are installed in the gas-liquid accumulator 11 on the master slider 9 and the gas-liquid accumulator, hydraulic oil 33 balances each other by the hydraulic pressure of communicating pipe 32 and flanging cylinder 10, and charge valve 36 and pressure gauge connection 37 are located on the gas-liquid accumulator 11.

Described master cylinder 2 and four auxiliary cylinders 5 are installed in the entablature 1, the last hydraulic cavities of master cylinder 2 and four auxiliary cylinders 5 and following hydraulic pressure win has communicating pipe 28 and communicating pipe 29 to be communicated with respectively, but but on master cylinder 2, be provided with the loading hydraulic tube 3 of double as backhaul oil exit pipe and the backhaul hydraulic tube 4 that double as loads oil exit pipe, load hydraulic tube 3 and backhaul hydraulic tube 4 and be communicated with the high pressure liquid source, backhaul oil exit pipe 4 and loading oil exit pipe 3 are communicated with fuel tank.

13 of described master slider 9 and blankholder slides place return pull bar 24, by the maximum spacing between adjustment nut 2 adjustings two slide blocks that are screwed onto pull bar 24 upper ends.

Described liftout tank plunger 22 tops are provided with the annular groove 23 of jack-up floating work bench 15, in annular groove, after loading onto snap ring, liftout tank plunger 22 can arrive predetermined height to floating work bench 15 jack-up, and with the spacing hold-down nut 16 of floating work bench that floating work bench 12 is locked.

On the outer wall of described master cylinder 2, auxiliary cylinders 5, flanging cylinder 10 and gas-liquid accumulator 11 and liftout tank 17, be respectively equipped with

water collar

27,26,30 and 31 and 18, in each water collar, be provided with spiral division board 59, the water collar 31 of gas-liquid accumulator has communicating pipe 57 and 58 respectively with the top and bottom of flanging cylinder water collar 30, and master cylinder water collar 27 has communicating

pipe

60 and 61 respectively with the top and bottom of auxiliary cylinders water collar 26.

The top and bottom of described master cylinder water collar 27 are respectively equipped with water inlet 60 and delivery port 61, the top and bottom of gas-liquid accumulator water collar 31 are respectively equipped with water inlet 55 and 56, top and bottom at flanging cylinder water collar 18 also are provided with water inlet and delivery port, the all water inlets of water collar all are connected with the delivery port of cooling system, and all delivery ports of water collar all are connected with the water inlet of cooling system.

The air bag 34 of described gas-liquid accumulator 11 can replace with piston 39 and sealing ring 40.

The plunger actuation that the utility model is installed in the flanging cylinder in the master slider connects blankholder slide, liftout tank is installed on the sill, between blankholder slide and unsteady crossbeam, stationary work-table is set, between stationary work-table and sill, be provided with and be the floating work bench that is slidingly matched with column, it is characterized in that: be provided with four auxiliary cylinders that symmetry is uniform around the master cylinder in entablature, the last hydraulic cavities and the lower hydraulic pressure chamber of master cylinder and auxiliary cylinders are connected by oil pipe respectively; Be provided with two gas-liquid accumulators and four hydraulic cylinders on main beam, the high-voltage oil cavity of each gas-liquid accumulator is connected by oil pipe with the hydraulic cavities of per two flanging cylinders; By being installed in the snap ring on the liftout tank plunger in the sill, can drive floating work bench, the stop nut of floating work bench can be fixed in predetermined height; Place blankholder slide return pull bar between master slider and blankholder slide, regulate maximum spacing between two slide blocks by the adjustment nut that is screwed onto tie rod end, master cylinder is connected with the liquid road of hydraulic system with the backhaul hydraulic tube with the loading hydraulic tube of liftout tank, fill the hydraulic cavities of hydraulic oil and the air bag of high pressure nitrogen in the gas-liquid accumulator, hydraulic oil and high pressure nitrogen can be separated by air bag, also can separate by piston.

Below master slider and blankholder slide slide block, in top and bottom that the regular worker makes a match, on floating work bench, be equipped with the T type groove of the moulds of industrial equipment that are installed; Punch on below master slider, being equipped with, the flanging mould is housed below blankholder slide, lower punch is housed on the upper surface of liftout tank plunger, the flanging mould is housed on floating work bench down, die is housed on stationary work-table.

The beneficial effects of the utility model are:

Novel in design, simple in structure, capacity usage ratio is high, better function, production efficiency height, easy operating, cost are low, and both can be used for the plasticity hot forming, also can be used for the plasticity cold forming, and therefore good prospects for application and market prospects are arranged.

1. owing to designed the last combined shaping structure of master cylinder and flanging cylinder; The following combined shaping structure of floating slider and liftout tank, and pressure-pad-force is all adjustable up and down, this has just simplified the structure of existing hydraulic press greatly, and can cut edge and punching, shaping and bending, the forward and reverse of flanging drawn and comparatively complicated block forging and volume combined shaping up and down, therefore, reform and developed the function of existing hydraulic press.

2. because the connection coordination structure between master cylinder, flanging cylinder and the gas-liquid accumulator, and the return pull bar of blankholder slide, saved the hydraulic system and the hydraulic control system of the pressurization and the backhaul of blankholder slide; Because the coordination structure of liftout tank and adjustable floating work bench, save required hydraulic system and the hydraulic control system of time flanging, therefore, simplified the hydraulic system of existing hydraulic press and the structure of control system thereof widely, reduce the energy loss of press, improved capacity usage ratio.

3. save manufacturing raw material and dedicated hydraulic member, shortened the manufacturing cycle of hydraulic press, reduced the manufacturing cost of hydraulic press.

4. improved the precision and the production efficiency of processing work, operating personnel have not been had special technical requirement.

5. impact and shake little, nuisanceless.

Description of drawings:

Fig. 1 is the front view of the utility model hydraulic press.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is that the A-A of Fig. 1 is to view.

Fig. 4 is that the B-B of Fig. 1 is to view.

Fig. 5 is the C-C cutaway view of Fig. 1.

Fig. 6 is the view that replaces air bag in the B-B cutaway view of Fig. 1 with piston.

Fig. 7 is the slightly bloated mould installation diagram that squeezes compound smart shaping of spur gear pier.

Fig. 8 is that the D-D of Fig. 7 is to view.

Fig. 9 is that the E-E of Fig. 7 is to view.

Figure 10 is the vertical view that accumulator and flanging cylinder pure water cooling jacket are put.

Figure 11 is F～F cutaway view of Figure 10.

Figure 12 is the vertical view that master cylinder and auxiliary cylinders pure water cooling jacket are put.

Figure 13 is G～G cutaway view of Figure 12.

Figure 14 is the front view of existing hydraulic press.

Among Fig. 1 to Figure 13: the 1st, entablature, the 2nd, master cylinder, the 3rd, load hydraulic tube double as backhaul oil exit pipe, the 4th, backhaul hydraulic tube double as loads oil exit pipe, the 5th, auxiliary cylinders, the 6th, master cylinder plunger piston, the 7th, the auxiliary cylinders plunger, the 8th, column, the 9th, master slider, the 10th, the flanging cylinder, the 11st, the gas-liquid accumulator, the 12nd, the flanging cylinder plug, the 13rd, blankholder slide, the 14th, workbench, the 15th, floating work bench, the 16th, the spacing hold-down nut of floating work bench, the 17th, liftout tank, the 18th, the pure water collar of liftout tank, the 19th, liftout tank loads hydraulic tube double as backhaul oil exit pipe, the 20th, liftout tank backhaul hydraulic tube double as loads oil exit pipe, the 21st, sill, the 22nd, the liftout tank plunger, the 23rd, the annular groove of jack-up floating work bench, the 24th, blankholder slide return pull bar, the 25th, the stop nut of return pull bar 24, the 26th, the pure water collar of auxiliary cylinders, the 27th, the pure water collar of master cylinder, the 28th, the communicating pipe of hydraulic cavities on master cylinder 2 and the auxiliary cylinders 5, the 29th, the communicating pipe of master cylinder 1 and auxiliary cylinders 5 lower hydraulic pressure chambers, the 30th, the pure water collar of flanging cylinder 10, the 31st, the pure water collar of accumulator 11, the 32nd, the communicating pipe of gas-liquid accumulator 11 hydraulic cavities and flanging cylinder, the 33rd, hydraulic oil, the 34th, air bag, the 35th, high pressure nitrogen, the 36th, charge valve, the 37th, Pressure gauge or pressure sensor interface, the 38th, steam vent, the 39th, gas-liquid separator piston, the 40th, sealing ring, the 41st, last punch die shank, the 42nd, epirelief mould clamping sleeve, the 43rd, last punch, the 44th, last flanging mould, the 45th, last flanging mould clamping sleeve, the 46th, tooth base, the 47th, die, the 48th, die prestressing force cover, the 49th, the die clamping sleeve, the 50th, lower punch, the 51st, the following flanging mould workpiece of holding concurrently ejects mould, the 52nd, following flanging mold pressing is tightly overlapped, the 53rd, lower punch clamping sleeve, the 54th, hold-down bolt, the 55th, the pure water water inlet interface of accumulator water collar, the 56th, the pure water water outlet interface of accumulator water collar, the 57th, the last communicating pipe of accumulator and flanging cylinder, the 58th, the lower communicating tube of accumulator and flanging cylinder, the 59th, the spiral division board of water collar, the 60th, the pure water water inlet interface of master cylinder water collar, the 61st, the pure water water outlet of master cylinder water collar connects day, and the 62nd, the last communicating pipe of master cylinder and auxiliary cylinders, the 63rd, the lower communicating tube of master cylinder and auxiliary cylinders.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail concrete structure of the present utility model.

Referring to figs. 1 through 4, four-column type is two moving adjustable hydraulic machines up and down, its entablature 1, master slider 9, blankholder slide 13, workbench 14, floating work bench 15 and sill 21 are installed on four columns 8, entablature 1, workbench 14 and sill 21 all tighten up with nut with column 8, and must guarantee the integrally-built strength and stiffness of hydraulic press, master slider 9 and blankholder slide 13 are to be contained between entablature 1 and the workbench 14, with column 4 for being slidingly matched, and to guarantee good quality of fit and wearability, floating work bench 15 is to be contained between workbench 14 and the sill 21, with column 8 also for being slidingly matched, floating work bench stop nut 16 can be limited to predetermined height with floating work bench 15, below master slider 9 and blankholder slide 13, at the upper and lower surface of workbench 14 be equipped with T type groove above the floating work bench 15, in order to pressing the usefulness of card frock and mould, master cylinder 2 is the centers that are packed in entablature 1, symmetry is fixed with four auxiliary cylinders 5 around master cylinder 2, fixedly connected with master slider 9 in the lower end of master cylinder plunger piston 6 and auxiliary cylinders plunger 7, master cylinder 2 is communicated with oil pipe 28 with the last hydraulic cavities of auxiliary cylinders 5, auxiliary cylinders 5 is communicated with oil pipe 29 with the lower hydraulic pressure chamber of master cylinder 2, being provided with loading hydraulic tube 3 and backhaul hydraulic tube 4 on master cylinder 2 is communicated with hydraulic press hydraulic system liquid road, load the double backhaul oil exit pipe of doing of hydraulic tube, the double loading oil exit pipe of doing of backhaul hydraulic tube, the lower end of four blankholder slide return pull bars 24 is to be fixed on the blankholder slide 13, four holes on the master slider are passed in the upper end of four return pull bars 24, and for being slidingly matched, be provided with adjustment nut 25 in the upper end of return pull bar 24, four flanging cylinders 10 are to be packed on the master slider 9, and the lower end of four flanging cylinder plugs 12 is connected on the blankholder slide 13; The one gas-liquid accumulator 11 that is communicated with its liquid road is set between per two described flanging cylinders 10.

Liftout tank 17 is to be fixed on the sill 21, the plunger 22 of liftout tank 17 can pass the centre bore of floating work bench 15, moulds of industrial equipment can be installed on its top end face, outer rim at an upper portion thereof is provided with the snap ring that can load and unload jack-up floating work bench 15, on the lower hydraulic pressure chamber of liftout tank 17, also be equipped with and load hydraulic tube 19 double as backhaul oil exit pipes, backhaul hydraulic tube 20 double as are housed on the hydraulic cavities thereon load oil exit pipe.

With reference to Fig. 1 and Fig. 5,6, on master slider 9, set firmly two gas-liquid accumulators 11 and four flanging cylinders 10, be provided with hydraulic cavities of containing hydraulic oil 33 and the air bag 34 that high pressure nitrogen 35 is housed in the hydraulic energy storage device 11, the also available piston 39 of air bag 34 that is provided with liquid road communicating pipes 32 hydraulic cavities between the hydraulic cavities of the hydraulic cavities of each gas-liquid accumulator and per two flanging cylinders replaces, and by sealing ring 40 liquid and air bound is opened.

Above-mentioned hydraulic press is a four-column type, also can be designed to frame-type as required, the bulk strength and the rigidity of tower structure are better, between the dovetail of the master slider of tower structure, blankholder slide and floating slider and the dovetail groove of framework for being slidingly matched, can regulate the gap of dovetail and dovetail groove by adjustment screw, guaranteeing the precision of hydraulic press, and though be above-mentioned four-column type or frame-type, all be suitable for cold plasticity and be shaped.

For thermoplastic forming, because the high temperature workpiece can reach plunger with heat by mould, will have a strong impact on the sealing property of sealing ring between plunger and the cylinder, for this reason, shown in Fig. 1,2.3,4,

cooling jacket

18,26 and 27,30 and 31 are housed respectively at the outer wall of liftout tank 17, auxiliary cylinders 5, master cylinder 2, flanging cylinder 10 and gas-liquid accumulator 11; Shown in Figure 10～13, be provided with between the water collar 31 of each gas-liquid accumulator and the water collar 30 of two flanging cylinders and be communicated with water pipe 57, be provided with between the water collar 27 of master cylinder and the water collar 26 of four auxiliary cylinders and be communicated with water pipe 62, water inlet 60 is arranged above master cylinder water collar 27, delivery port 61 is thereunder arranged, upper and lower at gas-liquid accumulator water collar 31 has water inlet 55 and delivery port 56 respectively, upper and lower at liftout tank water collar 18 also is provided with intake-outlet, in each water collar, be provided with the spiral division board again, above-mentioned each water inlet is connected with the delivery port of circulating cooling system, each delivery port be connected the water inlet day of circulating cooling system.

The utility model hydraulic press operation principle is:

Hydraulic oil is under the control of master cylinder hydraulic pressure control system, by the master cylinder hydraulic pressure system through enter the last hydraulic cavities of master cylinder 2 with carrier fluid pipe 3, and by entering the last hydraulic cavities of auxiliary cylinders 5 communicating pipe 28 simultaneously, promoting master cylinder plunger piston 6 and auxiliary cylinders plunger 7 moves down master slider 9, meanwhile, the oil of auxiliary cylinders 5 lower hydraulic pressure chambers is by entering the lower hydraulic pressure chamber of master cylinder 2 communicating pipe 29, and directly gets back to fuel tank through loading oil exit pipe 4; During backhaul, hydraulic oil enters the lower hydraulic pressure chamber of master cylinder and auxiliary cylinders, and master slider 9 is up, and the oil of master cylinder and auxiliary cylinders epicoele is got back to fuel tank through oil exit pipe 3; Because gas-liquid accumulator 11 mesohighs oil 33 is communicated with by communicating pipe 32 with the flanging cylinder, so the oil pressure of the hydraulic oil 33 in the oil pressure in the flanging cylinder, gas-liquid accumulator 11 and the mutual balance of air pressure of air bag 34 mesohigh nitrogen; Therefore, when master slider 9 moved down, blankholder slide 13 also moved down synchronously, had only when blankholder slide 13 flanging, and the elastic force that master slider 9 just can overcome air bag 34 mesohigh nitrogen 35 moves down with respect to blankholder slide; The lower end of flanging cylinder return pull bar 24 is to be fixed on the blankholder slide 13, and passes four holes on the master slider 9, and its upper end is rotary with adjusting nut 25, and when master slider 9 returns, return pull bar 24 just retracts initial position with blankholder slide 13; Liftout tank 17 is to be fixed on the sill 21, lower hydraulic pressure chamber at liftout tank 17 is provided with loading hydraulic tube 19, hydraulic cavities is provided with backhaul and loads hydraulic tube 20 on liftout tank 17, and liftout tank plunger 22 is contained in the liftout tank, has the annular groove 23 of jack-up floating work bench 15 on plunger 22; When hydraulic oil entered the lower hydraulic pressure chamber of liftout tank 17 by loading hydraulic tube 19, plunger 22 was by jack-up, and the oil of hydraulic cavities is got back to fuel tank through loading oil exit pipe 20 on the liftout tank 17 simultaneously; When hydraulic oil entered the last hydraulic cavities of liftout tank 17 by backhaul hydraulic tube 20, plunger 22 was pushed back, and the oil of liftout tank lower hydraulic pressure chamber is got back to fuel tank through backhaul oil exit pipe 19 simultaneously.

Use the utility model press production instance:

The machine cut material processed utilization rate of spur gear wheel is low and working (machining) efficiency is low, and the metallic fiber of tooth root part is cut off, and making its impact flexibility reduction etc. is long-standing major issue; Adopt existing press to carry out Plastic Forming processing, though improved stock utilization and forming efficiency, and because of the be shaped direction that flows of the direction of plastic force and profile of tooth vertical, the corner part filling of increment is discontented, crackle often appears in tooth root, and the service life of die is low, and this all is a problem demanding prompt solution;

On hydraulic press of the present utility model, adopt the embodiment crowded and the crowded combined shaping spur gear wheel of inaccessible pier that expands below in conjunction with Fig. 7, Fig. 8 and Fig. 9 explanation.Last punch 43 packed into goes up in the punch die shank 41, will go up punch die shank 41 and pack in the epirelief mould clamping sleeve 42, again with hold-down bolt 54 be fixed on master slider 9 below; Last flanging mould 44 packed into goes up in the flanging die sleeve 45, again with hold-down bolt 54 be fastened on blankholder slide 13 below; The die 47 that prestressing force cover 48 is housed is packed in the die clamping sleeve 49, again with hold-down bolt 54 be fastened on workbench 14 above; Lower punch 50 is packed in the lower punch clamping sleeve 53, be fixed in again on the liftout tank plunger 22; To descend the flanging mould workpiece of holding concurrently to eject mould 51 and pack in the tight cover 52 of down flanging mold pressing, again with bolt 54 with its be fixed tightly in floating work bench 15 above; Snap ring is snapped in the annular groove 23 of jack-up floating work bench, start liftout tank plunger 22, until flanging mould 51 down enter die 47 a little, stop the up of liftout tank plunger 22, screw the spacing hold-down nut 16 of floating work bench then, and snap ring is shed from annular groove 23.

Worked copper, the spur gear wheel of aluminium, or the little steel spur gear wheel of diameter, can use the cylindrical blank direct forming, for the big steel spur gear wheel of diameter, shut out the tooth base earlier, during shaping, elder generation packs tooth base 46 in the die 47, start press, master slider 9 is descending, because flanging cylinder plug 12 is subjected to the effect of air bag elastic force in the gas-liquid accumulator 11, blankholder slide 13 can only be simultaneously descending with master slider 9, when flanging mould 44 enter die 47 a little, and when contacting with tooth base 46, blankholder slide 13 can not continue descending, and the elastic force that master slider 9 just overcomes in the gas-liquid accumulator 11 continues descending, mushrooming deformation just takes place under the effect in tooth base 46 in last flanging mould 44 and following flanging mould 51, when slide block 9 continuation were descending, following flanging cylinder plug 22 also started thereupon, and last punch 43 and lower punch 50 are pressed into the center of tooth base 46 simultaneously, make material take place to expand and squeeze distortion, finished the Plastic Forming of spur gear wheel simultaneously; Master slider 9 lifts during backhaul, the plunger 22 of liftout tank continues up, ejecting mould 51 ejects the gear that is shaped, blankholder slide backhaul pull bar 24 is withdrawn into initial position with

blankholder slide

13,22 backhauls of liftout tank plunger, lower punch 50 is extracted from the spur gear that is shaped, and the pier of having finished a spur gear wheel squeezes and expands and squeezes the compound smart all processes that is shaped.

Because squeezing and expand, above-mentioned pier squeezes combined shaping, tooth base upper and lower surface is subjected to mushrooming deformation, and it is consistent to go up the mobile direction of direction that expanding of lower punch squeeze the plastic force that makes profile of tooth and profile of tooth plasticity, and this has just solved, and the increment corner can not be full of, crackle appears in tooth root easily and a die low difficult problem in service life.

Excellent technique effect of the present utility model is:

1. consult Fig. 1, Fig. 2 and Fig. 3, master cylinder 2 is the centers that are installed on entablature 1, and four auxiliary cylinders 5 are symmetrical Be installed on entablature 1 master cylinder around, the lower end of master cylinder plunger piston 6 and auxiliary cylinders plunger 7 is to be fixed on the master slider 9, Master cylinder 2 is communicated with by communicating pipe 28 with the upper hydraulic cavities of four auxiliary cylinders 5, the lower hydraulic pressure chamber of master cylinder 2 and four auxiliary cylinders 5 Lower hydraulic pressure chamber was communicated with by communicating pipe 29; During loading, load the upper hydraulic cavities that hydraulic oil enters master cylinder 2 by loading hydraulic tube 3, Simultaneously also enter the upper hydraulic cavities of auxiliary cylinders 5, so promote synchronously master cylinder plunger piston 6 and auxiliary cylinders plunger 7 makes master slider 9 downward Mobile; During backhaul, the backhaul hydraulic oil enters the lower hydraulic pressure chamber of master cylinder 2 by backhaul hydraulic tube 4, also enters auxiliary cylinders 5 simultaneously Lower hydraulic pressure chamber promotes synchronously master cylinder plunger piston 6 and kicker ram 7 and makes on the master slider 9 and retract the position; This has just simplified loading, backhaul The structure of hydraulic system and hydraulic control system.

2. consult Fig. 1, Fig. 4, symmetrical 10, four flanging cylinder plugs 12 of four flanging cylinders that fixedly are equipped with on master slider 9 The lower end be to be fixed on the blankholder slide 13, between per two flanging cylinders, a gas-liquid accumulator 11 is housed, in the gas-liquid energy storage Air bag 34 and hydraulic oil 33 are housed, the hydraulic cavities of the hydraulic oil of gas-liquid accumulator 11 and flanging cylinder 10 oil pipe 32 in the device 11 Be communicated with, the high pressure nitrogen in the air bag 34 just with pressure-acting in hydraulic oil 33, hydraulic oil 33 acts on flanging through communicating pipe 32 On the cylinder plug 12, when master slider 2 moved down with respect to blankholder slide 13, flanging cylinder plug 12 compressing gasbags 34 produced institute The pressure-pad-force that needs, this has just saved required hydraulic control system and the hydraulic system of blankholder slide, and air bag 34 mesohigh nitrogen The pressure of gas 35 is by the mensuration of the Pressure gauge that is contained in interface 37 or pressure sensor, and is filled with predetermined pressure by charge valve 36 High pressure nitrogen 35, nitrogen pressure can be according to the pressure of air bag with the variable gradient of flanging cylinder plug 12 strokes in the air bag 34 in addition The contracting volume designs with the ratio of air bag cumulative volume.

3. consult Fig. 5, Fig. 6, the air bag 34 of gas-liquid accumulator 11 can replace with piston 39, adds on piston 39 outer walls Well behaved sealing ring 40 separates high pressure nitrogen 35 and hydraulic oil 33, can realize function same as described above.

4. consult Fig. 1, the lower end of four backhaul limit pull rods 24 is to be fixed on the blankholder slide 13, and master slider is passed in its upper end Four through holes on 9, adjusting nut 25 is equipped with in the upper end of four limit pull rods 24, and when master slider 9 backhaul, four are spacing Pull bar 24 just retracts initial position to blankholder slide 13, and this has just saved required system and the hydraulic control system of flanging cylinder backhaul.

5. consult Fig. 1, floating work bench 15 is housed below workbench 14, floating work bench 15 is slip with column 8 Cooperate, when transferring the dress mould, earlier lower edge mould is installed on the floating work bench 15, again snap ring is contained in liftout tank plunger 22 Annular groove 23 in, by liftout tank plunger 22 jack-up floating work bench, until lower edge mould 51 a little when being pressed into die 46, Floating work bench 15 hold-down nuts 16 are screwed, remove snap ring, floating work bench 15 just is positioned, and this has just saved and has pressed down The hydraulic system that the limit is required and hydraulic control system.

Claims

1. one kind is two moving adjustable hydraulic machines up and down, form by main body and hydraulic system, its main body comprises column (8) and places the entablature (1) that is fixed on column (8) upper and lower side, sill (21), be the master slider (9) that is slidingly matched with column (8), blankholder slide (1), and be contained in stationary work-table (14) and floating work bench (15) on the column (8), the plunger (7) that it is characterized in that being installed in the plunger (6) of the master cylinder (2) in the entablature (1) and four auxiliary cylinders (5) that are installed in entablature (1) drives and is connected master slider (9), the hydraulic cavities that is installed in the gas-liquid accumulator (11) in the master slider (9) has communicating pipe (32) to be communicated with the hydraulic cavities of flanging cylinder (10) in being installed in master slider (9), the plunger (12) of flanging cylinder (10) drives and connects sliding determine (13) of flanging, can clamp moulds of industrial equipment or eject mould in the upper surface of liftout tank plunger (22), be provided with the annular groove (23) of jack-up floating work bench on the top of liftout tank plunger (22), annular groove (23) can load and unload snap ring, after loading onto snap ring, liftout tank plunger (22) can be with floating work bench (15) jack-up to predetermined height.

2. two up and down moving adjustable hydraulic machine according to claim 1, it is characterized in that described stationary work-table (14) is located between blankholder slide (13) and the floating work bench (15), floating work bench (15) is located between stationary work-table (14) and the sill (21), floating work bench (15) and column (8) are and are slidingly matched, liftout tank (17) is installed on the sill (21), and the plunger (22) of liftout tank (17) can pass the centre bore of floating work bench (15).

3. pair moving adjustable hydraulic machines that are up and down according to claim 1, the hydraulic pressure that it is characterized in that the hydraulic oil (33) of hydraulic cavities in the air pressure of described air bag (34) the mesohigh nitrogen (35) that is installed in the gas-liquid accumulator (11) on the master slider (9) and the gas-liquid accumulator balances each other, hydraulic oil (33) balances each other by the hydraulic pressure of communicating pipe (32) and flanging cylinder (10), and charge valve (36) and pressure gauge connection (37) are located on the gas-liquid accumulator (11).

4. pair moving adjustable hydraulic machines that are up and down according to claim 1, it is characterized in that described master cylinder (2) and four auxiliary cylinders (5) are installed in the entablature (1), the last hydraulic cavities of master cylinder (2) and four auxiliary cylinders (5) and following hydraulic pressure win has communicating pipe (28) and communicating pipe (29) to be communicated with respectively, at master cylinder (2) but on be provided with double as backhaul oil exit pipe loading hydraulic tube (3) but and double as load the backhaul hydraulic tube (4) of oil exit pipe, load hydraulic tube (3) and backhaul hydraulic tube (4) and be communicated with the high pressure liquid source, backhaul oil exit pipe (4) and loading oil exit pipe (3) are communicated with fuel tank.

5. pair moving adjustable hydraulic machines that are up and down according to claim 1, it is characterized in that placing return pull bar (24) between described master slider (9) and blankholder slide (13), by the maximum spacing between adjustment nut (2) adjusting two slide blocks that are screwed onto pull bar (24) upper end.

6. pair moving adjustable hydraulic machines that are up and down according to claim 1, it is characterized in that described liftout tank plunger (22) top is provided with the annular groove (23) of jack-up floating work bench (15), in annular groove, after loading onto snap ring, liftout tank plunger (22) can arrive predetermined height to floating work bench (15) jack-up, and with the spacing hold-down nut of floating work bench (16) that floating work bench (12) is locked.

7. pair moving adjustable hydraulic machines that are up and down according to claim 1, it is characterized in that in described master cylinder (2), auxiliary cylinders (5), be respectively equipped with water collar (27) on the outer wall of flanging cylinder (10) and gas-liquid accumulator (11) and liftout tank (17), (26), (30) and (31) and (18), in each water collar, be provided with spiral division board (59), the water collar of gas-liquid accumulator (31) has communicating pipe (57) and (58) respectively with the top and bottom of flanging cylinder water collar (30), and master cylinder water collar (27) has communicating pipe (60) and (61) respectively with the top and bottom of auxiliary cylinders water collar (26).

8. pair moving adjustable hydraulic machines that are up and down according to claim 1, the top and bottom that it is characterized in that described master cylinder water collar (27) are respectively equipped with water inlet (60) and delivery port (61), the top and bottom of gas-liquid accumulator water collar (31) are respectively equipped with water inlet (55) and (56), top and bottom at flanging cylinder water collar (18) also are provided with water inlet and delivery port, the all water inlets of water collar all are connected with the delivery port of cooling system, and all delivery ports of water collar all are connected with the water inlet of cooling system.

9. pair moving adjustable hydraulic machines that are up and down according to claim 3 is characterized in that the available piston of air bag (34) (39) of described gas-liquid accumulator (11) and sealing ring (40) replace.