CN102554628A - Casting-forging hydropress and method for casting and forging product thereof - Google Patents
Casting-forging hydropress and method for casting and forging product thereof Download PDFInfo
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- CN102554628A CN102554628A CN2012100182814A CN201210018281A CN102554628A CN 102554628 A CN102554628 A CN 102554628A CN 2012100182814 A CN2012100182814 A CN 2012100182814A CN 201210018281 A CN201210018281 A CN 201210018281A CN 102554628 A CN102554628 A CN 102554628A
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Abstract
The invention discloses a casting-forging hydropress and a method for casting and forging a product thereof. The casting-forging hydropress comprises a worktable, a stand column, a die-assembling cylinder, a forging and pressing cylinder, a movable beam and a pressure casting device, wherein the stand column is arranged on the worktable, the die-assembling cylinder is arranged on the stand column, the movable beam is movably arranged on the stand column and connected with a piston rod of the die-assembling cylinder, the forging and pressing cylinder is arranged on the die-assembling cylinder, and the pressure casting device is arranged on the tabletop of the worktable. According to the invention, as the pressure casting device is arranged on the tabletop of the worktable, a die can be filled with metal liquid not just in the state of die opening, thereby facilitating the filling and pressure feeding of the metal liquid, and simplifying the operation process, so that the operating efficiency of the hydropress is effectively improved; meanwhile, as a cylinder body of the forging and pressing cylinder is formed by hollowing out the lower end of the piston rod of the die-assembling cylinder, the structure of the hydropress is simplified, and the hydropress has the advantages of high forging pressure and stable die-assembling pressure and the like, thereby effectively ensuring the forging performance of products.
Description
Technical field
The present invention relates to a kind of machine of metal forming industry, the casting forging hydraulic machine of integrated molding and the method that product is forged in casting thereof are forged in the feeding type compression casting of particularly a kind of metal side.
Background technology
As everyone knows, in order to obtain the metal parts of definite shape, size and mechanical property, can adopt technologies such as casting, forging, weldering and various machinings usually.For complex-shaped and part that mechanical property requirements is not high can adopt general casting method; And high for mechanical property requirements, but shape is not a complicated parts very, carries out machining after will adopting forging; But for the performance requirement height and shape complicated parts very, after forging, will carry out a large amount of and complicated mechanical processing so, had both consumed the metal material of a large amount of preciousnesses, again the energy of labor and machining period.Along with the development of large-scale production, the shape of product becomes increasingly complex, and mechanical property also requires increasingly high, so occurred new technology such as uniting such as low pressure casting, Hpdc, liquid forging (extrusion casint), powder metallurgy, casting-forging.Above-mentioned various new technology in the production of the various metal parts of demands of different, has obtained application.Wherein, require height and the shape complicated parts for production performance, casting-forging process integration is just demonstrating vigorous vitality, and its basic process is to cast out blank with casting method earlier; After the cleaning, blank is reheated, put into forging die again and carry out die forging; The shortcoming of this technology is that the production cycle is long, and equipment and mould are many, drops into bigger; Need reheat and cut edge, consume the more energy, so production cost is higher.
To above-mentioned situation, occur a kind of casting in the existing technology and forged compound integrated forming technique, this technology is meant in same set of mould; Cast earlier; The advanced technologies of immediately forging, its basic process are to use the compression casting method, and metal bath is injected moulding in the forging die; After treating that it solidifies, in same mould, forge immediately.Compare with casting-forging process integration; The less equipment investment of compound integrated forming technique is forged in casting; Need not to reheat and cut overlap; Thereby casting forges compound integrated forming technique and has the production efficiency height, saves advantages such as the energy, stock utilization height and production cost are low, is to produce complex-shaped and the high-efficiency molding method of the metal parts that mechanical property requirements is high.To this technology; The patent No. is that the Chinese patent of ZL200520057256.2 discloses " two control one-shot forming die casting forging machines are forged in a kind of metal liquid die casting ", and its basic principle is an additional function of forging on the basis of common four post hydraulic presses, and its structure mainly is made up of following parts: on die casting forging machine top one group of oil gear is installed; Oil gear adopts the original oil pressure unit of hydraulic press; Utilize the big stroke oil cylinder of oil gear to accomplish matched moulds and Qi Mo action, and set up one group of oil gear at die casting forging machine middle part, the structure of oil gear is common oil pressure unit; The bottom of oil gear is installed and is forged kinematic link; The bottom of forging kinematic link is equipped with the mould of wrought drift, accomplish the forging action through forging kinematic link, and cover half core rod one side that is installed on the workbench is provided with the die casting runner; The bottom of die casting runner is provided with injection punch head, accomplishes the compression casting moulding of liquid metal through the one group of oil gear that is installed on the workbench bottom.The shortcoming of this die casting forging machine is: 1, pressure casting apparatus is arranged on the bottom of workbench; The die casting forging machine must be in the state of die sinking; It is reinforced to the cast of injection barrel to pass through cover half, and it is very inconvenient to operate, thereby causes the inefficiency of this equipment; And can cause the splash of molten metal in the high speed cavity filling process and wrap up in gas, so product quality and yield rate are also lower; 2, the forging function of die casting forging machine is to realize that through forging kinematic link forging pressure and forging deformation amount are all lower, so the forgeability of product is poor.
Summary of the invention
The objective of the invention is to above-mentioned existing problems and deficiency; Provide a kind of forging pressure and forging deformation amount high; And adding of molten metal send mode simple and convenient, and production efficiency is high, the method that product is forged in casting forging hydraulic machine that product quality is high and yield rate is high and casting thereof.
Technical scheme of the present invention is achieved in that
Casting forging hydraulic machine of the present invention; Comprise workbench, column, die cylinder, forging and pressing oil cylinder, moved cross beam and pressure casting apparatus; Said column is arranged on the workbench, and said die cylinder is arranged on the column, and said moved cross beam installs movably on column and with the piston rod of die cylinder and is connected; Said forging and pressing oil cylinder is arranged on the die cylinder, is characterized in that said pressure casting apparatus is arranged on the table top of workbench.
In order to improve forging pressure and forging deformation amount effectively, to satisfy the forgeability of product easily, the cylinder body of above-mentioned forging and pressing oil cylinder is emptied by the lower end of the piston rod of die cylinder and is formed.
Realize the filling and the force feed of molten metal for ease; Above-mentioned pressure casting apparatus comprises compression casting oil cylinder, injection punch head and injection barrel; Said compression casting oil cylinder is fixed on the table top of above-mentioned workbench; One end of said injection punch head is connected with the piston rod of compression casting oil cylinder, the other end is plugged in the said injection barrel movably, and said injection barrel is provided with the molten metal input port.
For the temperature that makes molten metal keeps stable, to satisfy the requirement of compression casting, the lateral surface of above-mentioned injection barrel is provided with heater coil.
In order to ensure die casting steadily, the table top of above-mentioned workbench is provided with the supporting guide that is used to support above-mentioned injection punch head.
To be connected reliably in order making between moved cross beam and the die cylinder, and to help forging and pressing the setting of oil cylinder, above-mentioned moved cross beam is fixedly connected with the piston rod of above-mentioned die cylinder through the closing cylinder adpting flange.
Casting and forging in order to realize product effectively are equipped with dynamic model on the above-mentioned moved cross beam, and correspondence is equipped with cover half on the table top of above-mentioned workbench, and above-mentioned pressure casting apparatus is connected with the lateral surface of said cover half.Wherein said dynamic model comprises the dynamic model frame that is connected with moved cross beam, is arranged on the moving-mould-core in the dynamic model frame and is arranged on the dynamic model frame and the forging and pressing drift at moving-mould-core middle part; Said forging and pressing drift is arranged to " T " font structure; The top of said forging and pressing drift is fixedly connected with the piston rod of above-mentioned forging and pressing oil cylinder through forging and pressing cylinder adpting flange; And the bottom shape of said forging and pressing drift matches with the upper surface shape that product is forged in casting, is provided with the forging and pressing stroke gap of 0mm ~ 50mm between the downside on said forging and pressing drift top and the dynamic model frame.And said cover half comprises that the cover half frame that is connected with workbench, the cover half core that is arranged in the cover half frame reach and the movable push rod that is connected of cover half frame and cover half core; And be provided with compression casting in the said cover half and fill the type runner; The end that the type runner is filled in this compression casting is connected with the die cavity of said cover half core, the other end is connected with space outerpace; And convenient to remove in order to make casting forge good product, the lower end of said push rod is connected with and ejects oil cylinder.
A kind of method of casting forging hydraulic machine casting forging product is characterized in comprising the steps:
A, dynamic model and cover half are installed, and the injection barrel installed and fixed make its inner chamber and the compression casting in the cover half fill the type runner on the lateral surface of cover half to be connected;
B, startup die cylinder are with dynamic model and cover half matched moulds;
C, the injection barrel is heated to 200 ℃ ~ 600 ℃ through heater coil;
D, be that 550 ℃ ~ 750 ℃ molten metal is injected in the injection barrel from the molten metal input port on the injection barrel with temperature;
E, starting pressure casting oil cylinder are accomplished the compression casting of molten metal, and casting pressure is 5 ~ 50 MPas, and filling velocity is 0.001 ~ 3 meter per second;
F, treat that molten metal is full of in dynamic model and the cover half behind the common formed product chamber of forming 0.1-~ 10 second, start the press forging that the forging and pressing oil cylinder is accomplished molten metal, forging pressure is 5 ~ 50 MPas;
G, start die cylinder separately, and will cast and forge the product of getting well and from the die cavity of cover half, eject and get final product dynamic model and cover half.
The present invention is installed in pressure casting apparatus on the table top of workbench owing to adopting; Can molten metal be pressed in the die cavity of mould from the side through this pressure casting apparatus; Make mould need not under the state of die sinking, can carry out the filling of molten metal, so both made things convenient for the filling and the force feed of molten metal, simplified operational sequence again; Thereby improved the operating efficiency of equipment effectively; And can be equipped with peripheral automation equipment such as automatic ration cast hand, spraying hand and pickup hand easily and realize full-automatic operation, thereby help ensureing operating personnel's safety and reduce labor intensity of operating personnel, and the filling velocity of molten metal can adjust flexibly and guarantee molten metal flow fill type steadily; Thereby avoided the splash of molten metal effectively and wrapped up in gas, guaranteed the quality of the safe in utilization and product of equipment.Simultaneously; Because the cylinder body of forging and pressing oil cylinder is to be emptied by the lower end of the piston rod of die cylinder to form, and makes forging and pressing oil cylinder and die cylinder be set to one, has both simplified the structure of equipment; Have advantages such as forging pressure height, clamping pressure be stable again, thereby guaranteed the forgeability of product effectively.And; Owing to be compression casting and the forging of in same mould, accomplishing the liquid towards metal; So just realized effectively integrating side feeding, compression casting and forging and pressing; Production efficiency is high, and mold clamping force, injection power and the forging force of casting forging hydraulic machine can adjust in a big way flexibly, can adapt to the part of production difformity and size.In addition, the present invention can close the forging and pressing oil cylinder and only realize the compression casting function, and changes molten metal into semi-solid metal slurry, can also realize the semi-solid-state metal casting and forging molding, therefore has flexibly the scope of application widely.The present invention is specially adapted to produce the Precision Machinery Elements complex-shaped, that mechanical property requirements is high, and production cost is low, and product quality is high and yield rate is high.
Below in conjunction with accompanying drawing the present invention is further described.
Description of drawings
Fig. 1 is the structural representation of die opening state of the present invention.
Fig. 2 is the structural representation of matched moulds state of the present invention.
The cross-sectional view that Fig. 3 combines with cover half for dynamic model of the present invention.
The specific embodiment
Like Fig. 1-shown in Figure 3; The method that product is forged in casting forging hydraulic machine of the present invention and casting thereof comprises workbench 1, column 2, die cylinder 3, forging and pressing oil cylinder 4, moved cross beam 5 and pressure casting apparatus 6, and its central post 2 is arranged on the workbench 1; Die cylinder 3 is arranged on the column 2; Moved cross beam 5 installs movably on column 2 and with the piston rod 31 of die cylinder 3 and is connected, and forging and pressing oil cylinder 4 is arranged on the die cylinder 3, in order to make the filling convenience of molten metal; Improve operating efficiency of the present invention effectively, pressure casting apparatus 6 is arranged on the table top of workbench 1.And this pressure casting apparatus 6 comprises compression casting oil cylinder 61, injection punch head 62 and injection barrel 63; Wherein compression casting oil cylinder 61 is fixed on the table top of workbench 1; One end of injection punch head 62 is connected with the piston rod 611 of compression casting oil cylinder 61, the other end is plugged in the injection barrel 63 movably, and injection barrel 63 is provided with molten metal input port 631.Like Fig. 1 and shown in Figure 2, on the table top of workbench 1, be wholely set boss, compression casting oil cylinder 61 is fixedly mounted on this boss.For the temperature that makes molten metal keeps stable, to satisfy the requirement of die casting, the lateral surface of injection barrel 63 is provided with heater coil 64.In order to ensure compression casting steadily, the table top of workbench 1 is provided with the supporting guide 65 that is used to support injection punch head 62, can prevent effectively that like this injection punch head 62 from occurring shaking when die casting and influence problem such as die casting effect.In order to improve forging pressure and forging deformation amount effectively, to satisfy the forgeability of product easily, the cylinder body 41 of forging and pressing oil cylinder 4 is emptied by the lower end of the piston rod 31 of die cylinder 3 and is formed.For make between moved cross beam 5 and the die cylinder 3 be connected reliable; And help forging and pressing the setting of oil cylinder 4; Moved cross beam 5 is fixedly connected with the piston rod 31 of die cylinder 3 through closing cylinder adpting flange 7; Like Fig. 1 and shown in Figure 2, the piston rod 42 of forging and pressing oil cylinder 4 passes from the centre of closing cylinder adpting flange 7.For casting and the forging that realizes product effectively; Dynamic model 8 is installed on moved cross beam 5; Simultaneously correspondence is equipped with cover half 9 on the table top of workbench 1, and pressure casting apparatus 6 is connected with the lateral surface of cover half 9, like Fig. 1 and shown in Figure 2; Pressure casting apparatus 6 is connected with cover half 9, is that the end through the injection barrel 63 on it is connected with the lateral surface of cover half 9.Wherein, Dynamic model 8 comprises the dynamic model frame 81 that is connected with moved cross beam 5, is arranged on the moving-mould-core 82 in the dynamic model frame 81 and is arranged on dynamic model frame 81 and the forging and pressing drift 83 at moving-mould-core 82 middle parts; And forging and pressing drift 83 is arranged to " T " font structure; The top of forging and pressing drift 83 is fixedly connected with the piston rod 42 of forging and pressing oil cylinder 4 through forging and pressing cylinder adpting flange 10; And the bottom shape of forging and pressing drift 83 matches with the upper surface shape that product is forged in casting, is provided with the forging and pressing stroke gap 84 of 0mm ~ 50mm between the downside on forging and pressing drift 83 tops and the dynamic model frame 81.And cover half 9 comprises that the cover half frame 91 that is connected with workbench 1, the cover half core 92 that is arranged in the cover half frame 91 reach and cover half frame 91 and the cover half core 92 movable push rods that are connected 93; And be provided with compression casting in the cover half 9 and fill type runner 94; The end that type runner 94 is filled in this compression casting is connected with the die cavity of cover half core 92, the other end is connected with space outerpace; As shown in the figure, when the casting of carrying out product as the present invention was forged, it was the intracavity inter-connection with injection barrel 63 that a end that type runner 94 is connected with space outerpace is filled in compression casting; And the shape of the lower surface of the shape of the die cavity of cover half core 92 and product matches; Be connected with in the lower end of push rod 93 simultaneously and eject oil cylinder 11, eject oil cylinder 11 through this and cooperate, can easily good product be forged in casting and from the die cavity of cover half 9, ejected with the effective of push rod 93; As shown in Figure 3; Push rod 93 is to be connected with the piston rod that ejects oil cylinder 11 through the push rod push pedal, and this moment, push rod 93 can be provided with a plurality ofly, and the one of which end is connected with push rod push pedal one, the other end is connected with the die cavity of cover half core 92.
The method that product is forged in casting forging hydraulic machine casting of the present invention comprises the steps:
At first, dynamic model 8 and cover half 9 are installed, and injection barrel 63 installed and fixed make its inner chamber fill type runner 94 on the lateral surface of cover half 9 to be connected with cover half 9 interior compression castings;
Then, start die cylinder 3 with dynamic model 8 and cover half 9 matched moulds;
Then, through heater coil 64 injection barrel 63 is heated to 200 ℃ ~ 600 ℃;
Then, be that 550 ℃ ~ 750 ℃ molten metal is injected in the injection barrel 63 from the molten metal input port 631 on the injection barrel 63 with temperature;
Then, starting pressure casting oil cylinder 61 is accomplished the compression casting of molten metal, and casting pressure is 5 ~ 50 MPas, and filling velocity is 0.001 ~ 3 meter per second;
Then, treat that molten metal is full of in dynamic model 8 and the cover half 9 behind the common formed product chambeies of forming 0.1-~ 10 second, start the press forging that forging and pressing oil cylinder 4 is accomplished molten metals, forging pressure is 5 ~ 50 MPas;
At last, start die cylinder 3 dynamic model 8 and cover half were opened in 9 minutes, and will cast and forge the product of getting well and from the die cavity of cover half 9, eject and get final product.
Operating principle and process that it is concrete are following:
At first dynamic model 8 is installed on the lower surface of moved cross beam 5; And the piston rod 42 of the forging and pressing drifts 83 in the dynamic model 8 and forging and pressing oil cylinder 4 is connected and fixes through forging and pressing cylinder adpting flange 10; Then cover half 9 is installed on the table top of workbench 1, and the oil cylinder 11 that ejects under the table top of the push rod in the cover half 9 93 and workbench 1 is connected, injection barrel 63 is connected with cover half frame 91 fixes then; And the inner chamber that makes injection barrel 63 fills type runner 94 with the compression castings in the cover half 9 and is connected; Through heater coil 64 injection barrel 63 being heated to 200 ℃ ~ 600 ℃ then, then starting die cylinder 3 and drive dynamic models 8 and move downward the matched moulds of accomplishing dynamic model 8 and cover half 9, is temperature that 550 ℃ ~ 750 ℃ molten metal is input to the injection barrel 63 from material input port 631 then; Restart pressure casting oil cylinder 61 promotes injection punch head 62 and molten metal is pressed in the formed product chambeies of forming jointly in dynamic model 8 and the cover half 9; Accomplish the casting of molten metal under pressure, 0.1-~ 10 second after molten metal is full of the entire product forming cavity then begin to start forging and pressing oil cylinder 4 and promote forging and pressing drifts 83 and pressurize; Forging and pressing drift 83 is accomplished the metal forging moulding; Start forging and pressing oil cylinder 4 then and will forge and press drift 83 and return, restart pressure casting oil cylinder 61 is return injection punch head 62, restarts die cylinder 3 and drives the move up unlatching of completion mould of moved cross beams 5 and dynamic model 8; Start at last and eject oil cylinder 11 and promote push rods 93 and from the die cavity of cover half 9, will cast and forge good product and eject, promptly accomplish the once process of casting forging product.Forge difform product if desired, change corresponding dynamic model 8 and cover half 9 so again, carry out aforesaid operations again and get final product.
The present invention describes through embodiment; But the present invention is not constituted restriction, with reference to description of the invention, other variations of the disclosed embodiments; Professional person as for this area expects that easily such variation should belong within the scope thereof of the present invention.
Claims (10)
1. cast forging hydraulic machine for one kind; Comprise workbench (1), column (2), die cylinder (3), forging and pressing oil cylinder (4), moved cross beam (5) and pressure casting apparatus (6); Said column (2) is arranged on the workbench (1); Said die cylinder (3) is arranged on the column (2); Said moved cross beam (5) installs movably at column (2) and upward and with the piston rod (31) of die cylinder (3) is connected, and said forging and pressing oil cylinder (4) is arranged on the die cylinder (3), it is characterized in that said pressure casting apparatus (6) is arranged on the table top of workbench (1).
2. according to the said casting forging hydraulic machine of claim 1, the cylinder body (41) that it is characterized in that above-mentioned forging and pressing oil cylinder (4) is emptied by the lower end of the piston rod (31) of die cylinder (3) and is formed.
3. according to the said casting forging hydraulic machine of claim 1; It is characterized in that above-mentioned pressure casting apparatus (6) comprises compression casting oil cylinder (61), injection punch head (62) and injection barrel (63); Said compression casting oil cylinder (61) is fixed on the table top of above-mentioned workbench (1); One end of said injection punch head (62) is connected with the piston rod (611) of compression casting oil cylinder (61), the other end is plugged in the said injection barrel (63) movably, and said injection barrel (63) is provided with molten metal input port (631).
4. according to the said casting forging hydraulic machine of claim 2, it is characterized in that the lateral surface of above-mentioned injection barrel (63) is provided with heater coil (64).
5. according to the said casting forging hydraulic machine of claim 2, it is characterized in that the table top of above-mentioned workbench (1) is provided with the supporting guide (65) that is used to support above-mentioned injection punch head (62).
6. according to the said casting forging hydraulic machine of claim 1, it is characterized in that above-mentioned moved cross beam (5) is fixedly connected with the piston rod (31) of above-mentioned die cylinder (3) through closing cylinder adpting flange (7).
7. according to the said casting forging hydraulic machine of claim 1; It is characterized in that being equipped with on the above-mentioned moved cross beam (5) dynamic model (8); Correspondence is equipped with cover half (9) on the table top of above-mentioned workbench (1), and above-mentioned pressure casting apparatus (6) is connected with the lateral surface of said cover half (9).
8. according to the said casting forging hydraulic machine of claim 7; It is characterized in that above-mentioned dynamic model (8) comprise the dynamic model frame (81) that is connected with moved cross beam (5), be arranged on the moving-mould-core (82) in the dynamic model frame (81) and be arranged on dynamic model frame (81) with moving-mould-core (82) in the middle part of forging and pressing drift (83); Said forging and pressing drift (83) is arranged to " T " font structure; The top of said forging and pressing drift (83) is fixedly connected with the piston rod (42) of above-mentioned forging and pressing oil cylinder (4) through forging and pressing cylinder adpting flanges (10); And the bottom shape of said forging and pressing drift (83) matches with the upper surface shape that product is forged in casting, is provided with the forging and pressing stroke gap (84) of 0mm ~ 50mm between the downside on said forging and pressing drift (83) top and the dynamic model frame (81).
9. according to the said casting forging hydraulic machine of claim 7; It is characterized in that above-mentioned cover half (9) comprises that the cover half frame (91) that is connected with workbench (1), the cover half core (92) that is arranged in the cover half frame (91) reach and cover half frame (91) and the movable push rod that is connected of cover half core (92) (93); And be provided with compression casting in the said cover half (9) and fill type runner (94); The end that type runner (94) is filled in this compression casting is connected with the die cavity of said cover half core (92), the other end is connected with space outerpace, and the lower end of said push rod (93) is connected with and ejects oil cylinder (11).
10. cast the method that product is forged in the forging hydraulic machine casting for one kind, this method adopts as the described casting forging hydraulic machine of aforementioned arbitrary claim, it is characterized in that comprising the steps:
A, dynamic model (8) and cover half (9) are installed, and injection barrel (63) installed and fixed make its inner chamber fill type runner (94) on the lateral surface of cover half (9) to be connected with the interior compression casting of cover half (9);
B, startup die cylinder (3) are with dynamic model (8) and cover half (9) matched moulds;
C, injection barrel (63) is heated to 200 ℃ ~ 600 ℃ through heater coil (64);
D, be that 550 ℃ ~ 750 ℃ molten metal is injected in the injection barrel (63) from the molten metal input port (631) on the injection barrel (63) with temperature;
E, starting pressure casting oil cylinder (61) are accomplished the compression casting of molten metal, and casting pressure is 5 ~ 50 MPas, and filling velocity is 0.001 ~ 3 meter per second;
F, treat that molten metal is full of in dynamic model (8) and the cover half (9) behind the common formed product chamber of forming 0.1-~ 10 second, start the press forging that forging and pressing oil cylinders (4) are accomplished molten metal, forging pressure is 5 ~ 50 MPas;
G, start die cylinder (3) separately, and will cast product that forging gets well and from the die cavity of cover half (9), eject and get final product dynamic model (8) and cover half (9).
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Application publication date: 20120711 |