CN114101572A - VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device and method - Google Patents
VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device and method Download PDFInfo
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- CN114101572A CN114101572A CN202111323901.0A CN202111323901A CN114101572A CN 114101572 A CN114101572 A CN 114101572A CN 202111323901 A CN202111323901 A CN 202111323901A CN 114101572 A CN114101572 A CN 114101572A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
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Abstract
The invention discloses a VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device and a method, wherein the device comprises: the upper die frame module connected with the hydraulic machine is provided with an upper punch and a mandrel and can vertically move; the horizontal die carrier module comprises a plurality of groups of driving force conversion devices and horizontal punches, wherein the driving force conversion devices comprise horizontal conversion inclined wedges, inclined wedge guide blocks and the like and can convert acting force in the vertical direction into radial pressure of the horizontal punches; the lower mold frame module comprises a female mold and the like. The multidirectional die forging forming method comprises the steps of 1) placing an annular blank in a female die and positioning; 2) the upper module moves downwards, and the mandrel enters the annular blank; 3) meanwhile, the horizontal conversion wedge is pushed to move downwards to drive a plurality of groups of horizontal punches to move radially at a constant speed; 4) and performing multi-directional die forging on the annular blank by using the mandrel and the horizontal punch to form the VL-shaped spherical cage cylindrical shell precision forging. The invention can complete multi-directional die forging production on a one-way hydraulic press, and the mechanical die carrier has reliable and durable structure and simple production process flow.
Description
Technical Field
The invention relates to the technical field of precision forging of a VL-shaped ball cage cylindrical shell, in particular to a device and a method for forming the VL-shaped ball cage cylindrical shell by radial constant-speed multidirectional die forging.
Background
The VL type ball cage is also called a telescopic type ball cage universal joint, and is used for connecting two rotating shafts with an included angle or a changed mutual position between the inner shafts of the automobile and enabling the two shafts to transmit power at the same angular speed. Therefore, the VL-shaped ball cage is one of the most important transmission parts in the automobile. However, the inner raceway of the VL-shaped ball cage is distributed in an inclined manner, the structure is complex and relatively narrow, and the common forging forming is difficult to smoothly demould. Therefore, in the current markets at home and abroad, for the production of the VL-shaped ball cage, blank forging is firstly carried out to form the outer surface of the ball cage, and then a production method of machining an inner side raceway is adopted.
The method for producing the VL-shaped ball cage by machining after forging is low in efficiency and has the defects of material waste, and the forging flow line of a forge piece is cut off in the machining process, so that the mechanical property, the wear resistance and the corrosion resistance of the ball cage are obviously reduced. Therefore, it is necessary to process VL type cages by using a multi-directional die forging technique. However, in the production process of the multi-directional die forging, multi-directional loads in horizontal and vertical directions exist, on one hand, the speeds of hydraulic cylinders in the horizontal directions are difficult to be consistent during the multi-directional die forging, and on the other hand, the multi-directional loads also easily cause the deformation of a die frame structure, reduce the precision of hydraulic equipment and influence the quality of die forgings. In addition, the common hydraulic press is mostly an oil cylinder moving in the vertical direction, a horizontal hydraulic cylinder needs to be added when multidirectional forging is carried out, the original press structure is greatly changed, and the required investment amount is large.
Disclosure of Invention
In view of the above, it is necessary to provide a device and a method for forming a VL-shaped ball cage cylindrical shell by radial constant-speed multi-directional die forging.
A VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device comprises:
the upper die frame module is connected with a hydraulic machine, the hydraulic machine can drive the upper die frame module to move up and down, and an upper punch and a mandrel are arranged on the upper die frame module;
the horizontal die carrier module is arranged below the upper die carrier module and comprises a plurality of groups of driving force conversion devices and horizontal punches, and the driving force conversion devices can convert vertical acting force of the upper punches into horizontal acting force of the horizontal punches;
the lower die frame module is arranged below the horizontal die frame module, annular blanks are placed on the lower die frame module, and the mandrel and the horizontal punch can perform multidirectional die forging on the annular blanks to form a VL-shaped ball cage cylindrical shell forging.
In one embodiment, the upper rack module includes:
the upper punch fixing plate is distributed on the lower surface of the upper punch fixing plate in an equilateral triangle manner;
the core shaft fixing plate is fixed on the lower surface of the upper punch fixing plate, the core shaft is fixed on the lower surface of the core shaft fixing plate, a plurality of convex blocks are arranged at the bottom of the core shaft, and the convex blocks are matched with the inner rolling path of the VL-shaped ball cage cylindrical shell.
In one embodiment, the driving force conversion apparatus includes:
the horizontal conversion tapered wedges are respectively in one-to-one correspondence with the upper punches; each horizontal conversion inclined wedge is slidably arranged in an inclined wedge guide block;
the lower end of the vertical nitrogen spring is connected with the lower die frame module, and the upper end of the vertical nitrogen spring is connected with the bottom of the horizontal conversion wedge;
the horizontal retainer is fixed on the lower mold frame module;
one end of the horizontal punch connecting rod is in sliding contact with the inclined surface of the horizontal conversion wedge, the other end of the horizontal punch connecting rod penetrates through the horizontal retainer and then is connected with the horizontal punch, and the horizontal punch is matched with the radial outer surface of the VL-shaped ball cage cylindrical shell;
the horizontal nitrogen spring is arranged between the horizontal punch connecting rod and the horizontal retainer;
when the horizontal conversion wedge moves downwards, the horizontal punch connecting rod can drive the horizontal punch to move horizontally towards the axis direction of the mandrel, so that the horizontal punch extrudes the radial outer surface of the VL-shaped ball cage cylindrical shell.
In one embodiment, the cam guide block is fixed to the lower mold frame module via a horizontal pressure ring.
In one embodiment, the lower mold frame module comprises:
a lower die holder;
the female die fixing plate is fixed on the lower die base, and a female die is fixed on the female die fixing plate;
and the inner side groove is formed in the inner side wall of the female die, and the shape and the position of the inner side groove are matched with those of the convex block.
A method for forming a VL-shaped ball cage cylindrical shell by radial constant-speed multidirectional die forging comprises the following steps:
s1, assembling the VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device on a hydraulic cylinder;
s2, placing the annular blank in a concave die, and enabling the annular blank to be located right below the mandrel;
s3, vertically moving the mandrel downwards under the drive of the hydraulic cylinder until the bottom end of the mandrel is contacted with the annular blank, and pushing out the bump on the mandrel;
s4, the upper punch is in contact with the horizontal conversion wedge and drives the horizontal conversion wedge to move vertically downwards to push a horizontal punch connecting rod connected with the horizontal conversion wedge through surface contact to move radially, the horizontal punch approaches and compresses the annular blank, and the annular blank is pressed to form a VL-shaped ball cage cylindrical shell under the combined action of the external horizontal punch and the internal mandrel;
s5, the horizontal punch and the horizontal conversion wedge are reset under the action of a horizontal nitrogen spring and a vertical nitrogen spring respectively;
and S6, the mandrel vertically moves upwards under the driving of the hydraulic cylinder to realize return stroke, and the forging of the cylindrical shell of the ball cage is taken out.
In one embodiment, the material used for the annular blank is 55 # steel.
The device and the method for forming the VL-shaped ball cage cylindrical shell by the radial constant-speed multidirectional die forging have the following beneficial effects:
1) the vertical force generated by the hydraulic cylinder can be transmitted to the horizontal punch heads, so that multidirectional pressurization of the annular blank is realized, and meanwhile, the method can ensure constant-speed pressurization of all the horizontal punch heads, and is favorable for improving the forming uniformity of the forged piece.
2) The mechanical die carrier structure provided by the invention can be assembled on a vertical one-way hydraulic press to finish the precision forming process of multidirectional forging, does not need a large amount of investment to greatly change the original press structure, and can flexibly design the die carrier structure.
3) In the die assembly process, the closed cavity formed by the mandrel, the horizontal punch and the female die can realize one-time forging forming of the annular blank, and the blanking amount of the annular blank is calculated before forging, so that waste of raw materials and subsequent machining can be avoided, and the production efficiency and the quality of the forged piece can be improved.
4) The horizontal conversion wedge and the horizontal rod punch slide through reliable surface contact to complete force transmission, so that large load can be borne, and the service life of the die carrier structure can be prolonged.
5) The mechanical die carrier is reliable and durable in structure, long in service life and high in practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a VL-type ball cage shell component of the present invention;
FIG. 2 is a cross-sectional view of a VL-type ball cage shell component of the present invention;
FIG. 3 is a schematic structural diagram of a radial constant-speed multidirectional die forging forming device for a VL-shaped ball cage cylindrical shell;
fig. 4 is a schematic structural view of the driving force conversion apparatus of the present invention;
fig. 5 is a distribution state diagram of the driving force conversion apparatus of the present invention.
In the figure, 1-mandrel fixing plate, 2-upper punch fixing plate, 3-upper punch, 4-horizontal conversion wedge, 5-horizontal punch, 6-wedge guide block, 7-horizontal punch connecting rod, 8-horizontal nitrogen spring, 9-horizontal pressure ring, 10-horizontal retainer, 11-vertical nitrogen spring, 12-lower die holder, 13-die fixing block, 14-die, 15-die inner side groove, 16-annular blank, 17-mandrel upper lug and 18-wedge type radial telescopic mandrel.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the invention, the forging of the VL-shaped spherical cage cylindrical shell is mainly characterized in that: the ball cage forging is circular, the outer diameter is 100, the inner diameter is 68.6, six long raceways are uniformly distributed on the inner wall of the circular ring along the circumferential direction, and the raceways completely penetrate through the forging along the circular ring. The axial inclination angles of the two adjacent raceways and the forging are equal in size and opposite in direction. Because the roller path on the inner wall of the cylindrical shell is not parallel to the axial direction of the outer sleeve, the prior forging process is difficult to realize smooth demoulding. It can be seen that the VL type ball cage cylindrical shell forging piece is difficult to be formed by simple one-way die forging and forging at one time, and therefore, the forging piece needs to be formed by adopting a multidirectional die forging technology.
However, in the production process of the multi-directional die forging, multi-directional loads in the horizontal direction and the vertical direction exist, the speeds of hydraulic cylinders in the horizontal direction are difficult to reach the same, and the quality of the die forging is affected. In addition, the common hydraulic press is mostly an oil cylinder which moves in a vertical direction in a single direction, a horizontal hydraulic cylinder needs to be added when multi-directional forging is carried out, and the structure of the original press is greatly changed. Therefore, the die frame structure and the multidirectional die forging process method which are reasonably designed have great significance for directly finishing the precision forging of the VL-shaped ball cage cylindrical shell part on the conventional common press.
Referring to fig. 1 to 5, an embodiment of the present invention provides a radial constant-speed multidirectional die forging forming device for a VL-shaped ball cage cylindrical shell, including:
the upper die frame module is connected with a hydraulic machine, the hydraulic machine can drive the upper die frame module to move up and down, and an upper punch 3 and a mandrel 18 are arranged on the upper die frame module;
the horizontal die carrier module is arranged below the upper die carrier module and comprises a plurality of groups of driving force conversion devices and horizontal punches 5, and the driving force conversion devices can convert vertical acting force of the upper punches 3 into horizontal acting force, namely radial pressure, of the horizontal punches 5; in this embodiment, the number of the horizontal punches 5 is 3.
The die forging die comprises a lower die frame module, wherein the lower die frame module is arranged below the horizontal die frame module, an annular blank 16 is placed on the lower die frame module, and the mandrel 18 and the horizontal punch 5 can perform multidirectional die forging on the annular blank 16 to form a VL-shaped ball cage cylindrical shell forging.
In the invention, the horizontal die carrier module transmits the force of the hydraulic machine which vertically moves to the horizontal punch 5 for forming the part structure through reliable mechanical transmission, and keeps the horizontal punch 5 pressurized at a constant speed, thereby realizing the uniform and precise forming of the VL-shaped spherical cage cylindrical shell, having the advantages of simple production process flow, high forging quality and the like, and the same method and thought are also suitable for the production of internal parting cylindrical shell parts with similar complex structures and difficult demoulding, such as: and (3) performing multidirectional die forging on the shell of the bomb.
In an embodiment of the present invention, the upper mold frame module includes:
the upper punch fixing plate 2 is characterized in that the upper punches 3 are distributed on the lower surface of the upper punch fixing plate 2 in an equilateral triangle manner; in this embodiment, the number of the upper punches 3 is 3.
The core shaft fixing plate 1 is fixed on the lower surface of the upper punch fixing plate 2, the core shaft 18 is fixed on the lower surface of the core shaft fixing plate 1, a plurality of convex blocks 17 are arranged at the bottom of the core shaft 18, and the convex blocks 17 are matched with an inner raceway of the VL-shaped ball cage cylindrical shell.
In an embodiment of the present invention, the driving force conversion apparatus includes:
the horizontal conversion inclined wedges 4 are respectively in one-to-one correspondence with the upper punches 3; each horizontal conversion wedge 4 is slidably arranged in a wedge guide block 6; the inclined wedge guide block 6 can guide the movement of the horizontal conversion inclined wedge 4, and the horizontal conversion inclined wedge 4 is guaranteed to move in the vertical direction all the time.
The lower end of the vertical nitrogen spring 11 is connected with the lower die frame module, and the upper end of the vertical nitrogen spring 11 is connected with the bottom of the horizontal conversion wedge 4; in this embodiment, the vertical nitrogen spring 11 is mainly used to reset the horizontal conversion wedge 4.
The horizontal retainer 10 is fixed on the lower mold frame module;
one end of the horizontal punch connecting rod 7 is in sliding contact with the inclined surface of the horizontal conversion wedge 4, the other end of the horizontal punch connecting rod 7 penetrates through the horizontal retainer 10 and then is connected with the horizontal punch 5, and the horizontal punch 5 is matched with the radial outer surface of the VL-shaped ball cage cylindrical shell; in this embodiment, the horizontal conversion wedge 4 slides and transmits power through surface contact with the horizontal punch rod 7, which is beneficial to improving the rigidity of the whole structure and prolonging the service life of the die carrier structure.
The horizontal nitrogen spring 8 is arranged between the horizontal punch connecting rod 7 and the horizontal retainer 10; in this embodiment, the horizontal nitrogen spring 8 is mainly used to reset the horizontal punch 5.
When the horizontal conversion wedge 4 moves downwards, the horizontal punch connecting rod 7 can drive the horizontal punch 5 to move horizontally towards the axial direction of the mandrel 18, so that the horizontal punch 5 extrudes the radial outer surface of the VL-shaped ball cage cylindrical shell.
In one embodiment of the present invention, to facilitate the installation and fixation of the cam guide block 6, the cam guide block 6 is fixed to the lower mold frame module via a horizontal pressure ring 9.
In an embodiment of the present invention, the lower mold frame module includes:
a lower die holder 12;
the female die fixing plate 13 is fixed on the lower die holder 12, and a female die 14 is fixed on the female die fixing plate 13;
and the inner side groove 15 is formed in the inner side wall of the female die 14, and the shape and the position of the inner side groove 15 are matched with those of the bump 17.
In this embodiment, when the mandrel 18 and the die 14 are closed, the protrusion 17 of the mandrel 18 is embedded into the die 14, and the mandrel 18, the die 14 and the horizontal punches 5 uniformly distributed in the direction form a closed cavity together, so as to realize the precise formation of the cylindrical shell.
An embodiment of the invention provides a radial constant-speed multidirectional die forging forming method for a VL-shaped ball cage cylindrical shell, which comprises the following steps of:
s1, assembling the VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device on a hydraulic cylinder;
s2, placing the annular blank 16 in the female die 14 and enabling the annular blank to be located right below the mandrel 18;
s3, vertically moving the mandrel 18 downwards under the drive of the hydraulic cylinder until the bottom end of the mandrel 18 is contacted with the annular blank 16, and pushing out the lug 17 on the mandrel 18;
s4, the upper punch 3 is in contact with the horizontal conversion wedge 4, the horizontal conversion wedge 4 is driven to move vertically downwards, the horizontal punch connecting rod 7 is pushed to move radially, the horizontal punch 5 is close to and compresses the annular blank 16, and the annular blank 16 is pressed to form a VL-shaped ball cage cylindrical shell under the combined action of the horizontal punch 5 and the inner mandrel 18; in the embodiment, the horizontal conversion wedge 4 and the horizontal punch connecting rod 7 transmit force through surface contact, so that the rigidity of the whole die carrier structure can be improved, and the service life of the die carrier structure can be prolonged. The horizontal punch 5 moves under the restriction of the punch holder 10 to ensure that the moving direction of the horizontal punch 5 does not deviate.
S5, the horizontal punch 5 and the horizontal conversion wedge 4 are reset under the action of the horizontal nitrogen spring 8 and the vertical nitrogen spring 11 respectively; in the embodiment, the horizontal nitrogen spring 8 and the vertical nitrogen spring 11 have the advantages of small volume, large elasticity, long stroke, stable work, precise manufacture, long service life, gentle elasticity curve, no need of pre-tightening and the like, and the service life of the die carrier structure can be prolonged.
And S6, the mandrel 18 moves vertically upwards under the driving of the hydraulic cylinder to realize return stroke, and the forging of the cylindrical shell of the ball cage is taken out.
Optionally, the material used for the annular blank 16 is 55 # steel.
The working principle of the invention is as follows:
a) when the annular blank 16 is placed in the cavity of the female die 14, the mandrel 18 and the upper punch 3 are connected to the hydraulic cylinder; the hydraulic cylinder moves downwards to drive the mandrel 18 and the upper punch fixing plate 2 to move downwards;
b) the mandrel 18 moves downwards to extend into the annular blank 16, and during the downward movement of the mandrel 18, the movable lug 17 at the bottom of the mandrel 18 extends out of the mandrel 18 to contact with the inner part of the annular blank 16;
c) the upper punch fixing plate 2 moves downwards to drive the upper punch 3 and the horizontal conversion wedge 4 to move downwards, the horizontal conversion wedge 4 slides in a surface contact manner with the horizontal punch rod 7 in the downward movement process and pushes the horizontal punch 5 to move radially, the three groups of horizontal die carrier structures simultaneously drive the horizontal punch 5 to move radially at the same speed, and the horizontal punch 5 is close to the annular blank 16 and is pressed tightly;
d) the mandrel 18 extends into the female die 14, the bump 17 on the mandrel 18 extends out and is embedded into the inner groove 15 of the female die 14, at the moment, a closed cavity is formed under the combined action of the outer horizontal punch 5, the mandrel 18, the female die 14 and the inner groove 15, the annular blank 16 starts to deform under the action of force exerted by the horizontal punch 5 and is pressed to form a VL-shaped ball cage cylindrical shell, the outer diameter of the completely formed forging is 100, the inner diameter of the completely formed forging is 68.6, and 6 inclined raceways on the inner side are clearly visible and are full in shape;
e) after forging, the horizontal punch 5 is reset under the action of a horizontal nitrogen spring 8, and the horizontal conversion wedge 4 is reset under the action of a vertical nitrogen spring 11;
f) and then, the mandrel 18 is driven by the hydraulic cylinder to move vertically upwards to realize a return stroke, the VL-shaped cylindrical ball cage shell workpiece is stripped under the action of the mandrel outer sleeve in the return stroke process, and the cylindrical ball cage shell forging piece is taken out from the rack to finish a precision forging process.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming device is characterized by comprising:
the upper die frame module is connected with a hydraulic machine, the hydraulic machine can drive the upper die frame module to move up and down, and an upper punch (3) and a mandrel (18) are arranged on the upper die frame module;
the horizontal die carrier module is arranged below the upper die carrier module and comprises a plurality of groups of driving force conversion devices and horizontal punches (5), and the driving force conversion devices can convert vertical acting force of the upper punches (3) into horizontal acting force of the horizontal punches (5);
the die forging die comprises a lower die frame module, wherein the lower die frame module is arranged below the horizontal die frame module, annular blanks (16) are placed on the lower die frame module, and the mandrel (18) and the horizontal punch (5) can perform multidirectional die forging on the annular blanks (16) to form a VL-shaped ball cage cylindrical shell forging.
2. The VL type ball cage cylindrical shell radial constant velocity multi-directional swaging forming device of claim 1, wherein the upper die frame module comprises:
the upper punch fixing plate (2), the upper punches (3) are distributed on the lower surface of the upper punch fixing plate (2) in an equilateral triangle shape;
the lower surface of punch head fixed plate (2) is fixed to dabber fixed plate (1), dabber (18) are fixed the lower surface of dabber fixed plate (1), the bottom of dabber (18) is equipped with a plurality of lugs (17), lug (17) cooperate with the inside raceway of VL type ball cage cylindric shell.
3. The VL type cage cylindrical shell radial constant velocity multi-directional swaging forming device according to claim 2, wherein the driving force conversion means includes:
the horizontal conversion inclined wedges (4), the horizontal conversion inclined wedges (4) are respectively in one-to-one correspondence with the upper punch heads (3); each horizontal conversion inclined wedge (4) is arranged in an inclined wedge guide block (6) in a sliding mode;
the lower end of the vertical nitrogen spring (11) is connected with the lower die frame module, and the upper end of the vertical nitrogen spring (11) is connected with the bottom of the horizontal conversion wedge (4);
the horizontal retainer (10) is fixed on the lower mold frame module;
one end of the horizontal punch connecting rod (7) is in sliding contact with the inclined surface of the horizontal conversion wedge (4), the other end of the horizontal punch connecting rod (7) penetrates through the horizontal retainer (10) and then is connected with the horizontal punch (5), and the horizontal punch (5) is matched with the radial outer surface of the VL-shaped ball cage cylindrical shell;
the horizontal nitrogen spring (8) is arranged between the horizontal punch connecting rod (7) and the horizontal retainer (10);
when the horizontal conversion wedge (4) moves downwards, the horizontal punch connecting rod (7) can drive the horizontal punch (5) to move horizontally towards the axial direction of the mandrel (18), so that the horizontal punch (5) extrudes the radial outer surface of the VL-shaped spherical cage cylindrical shell.
4. The VL type ball cage cylindrical shell radial constant velocity multi-directional swaging forming device of claim 3, wherein the wedge guide block (6) is fixed to the lower mold frame module via a horizontal pressure ring (9).
5. The VL type ball cage cylindrical shell radial constant velocity multi-directional swaging forming apparatus of claim 3 or 4, wherein the lower die holder module includes:
a lower die holder (12);
the female die fixing plate (13) is fixed on the lower die holder (12), and a female die (14) is fixed on the female die fixing plate (13);
the inner side groove (15) is formed in the inner side wall of the concave die (14), and the shape and the position of the inner side groove (15) are matched with those of the convex block (17).
6. A VL-shaped ball cage cylindrical shell radial constant-speed multidirectional die forging forming method is characterized by comprising the following steps:
s1, assembling the VL-shaped ball cage cylindrical shell radial constant-speed multi-directional die forging forming device of any one of claims 1 to 5 on a hydraulic cylinder;
s2, placing the annular blank (16) in the female die (14) and enabling the annular blank to be located right below the mandrel (18);
s3, vertically moving the mandrel (18) downwards under the drive of the hydraulic cylinder until the bottom end of the mandrel (18) is contacted with the annular blank (16), and pushing out the lug (17) on the mandrel (18);
s4, the upper punch (3) is in contact with the horizontal conversion wedge (4) and drives the horizontal conversion wedge (4) to move vertically downwards, the horizontal punch connecting rod (7) connected with the horizontal conversion wedge (4) through surface contact is pushed to move radially, the horizontal punch (5) is close to and presses the annular blank (16), and the annular blank (16) is pressed to form a VL-shaped ball cage cylindrical shell under the combined action of the external horizontal punch (5) and the internal mandrel (18);
s5, the horizontal punch (5) and the horizontal conversion wedge (4) are reset under the action of a horizontal nitrogen spring (8) and a vertical nitrogen spring (11) respectively;
s6, the mandrel (18) moves vertically upwards under the drive of the hydraulic cylinder to realize return stroke, and the forging of the cylindrical shell of the ball cage is taken out.
7. The VL type rzeppa cylindrical shell radial constant velocity multi-directional die forging forming method according to claim 6, characterized in that the material used for the annular blank (16) is 55 steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799030A (en) * | 2022-03-31 | 2022-07-29 | 上海电机学院 | Back pressure type multidirectional die forging forming die and forming method for VL-shaped ball cage cylindrical shell |
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| CN211276201U (en) * | 2019-12-19 | 2020-08-18 | 天津滨海中微精密模具有限公司 | Hardware stamping die capable of stamping at multiple angles |
| CN213559515U (en) * | 2020-06-18 | 2021-06-29 | 东莞市亿杰五金制品有限公司 | Automatic precision stamping die |
| CN113500134A (en) * | 2021-08-20 | 2021-10-15 | 台州市中亚汽车零部件股份有限公司 | Cold stamping porous forming die |
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2021
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| CN208800669U (en) * | 2018-09-20 | 2019-04-30 | 昆山优美特电子科技有限公司 | Offset-prevention type automobile part mould |
| CN209109945U (en) * | 2018-12-06 | 2019-07-16 | 常州工利精机科技有限公司 | A kind of side blow balance mechanism of automobile mounted power shell class part |
| CN109731974A (en) * | 2019-01-29 | 2019-05-10 | 上海电机学院 | VL type cage shapes component and its shapes method |
| CN211276201U (en) * | 2019-12-19 | 2020-08-18 | 天津滨海中微精密模具有限公司 | Hardware stamping die capable of stamping at multiple angles |
| CN213559515U (en) * | 2020-06-18 | 2021-06-29 | 东莞市亿杰五金制品有限公司 | Automatic precision stamping die |
| CN113500134A (en) * | 2021-08-20 | 2021-10-15 | 台州市中亚汽车零部件股份有限公司 | Cold stamping porous forming die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114799030A (en) * | 2022-03-31 | 2022-07-29 | 上海电机学院 | Back pressure type multidirectional die forging forming die and forming method for VL-shaped ball cage cylindrical shell |
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