CN111451426A - Blank making hydraulic machine and double-punch flange blank making method - Google Patents
Blank making hydraulic machine and double-punch flange blank making method Download PDFInfo
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- CN111451426A CN111451426A CN202010273178.9A CN202010273178A CN111451426A CN 111451426 A CN111451426 A CN 111451426A CN 202010273178 A CN202010273178 A CN 202010273178A CN 111451426 A CN111451426 A CN 111451426A
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- blank
- cylinder
- punching
- punch
- movable beam
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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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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Abstract
The invention provides a blank manufacturing hydraulic machine and a double-punch flange blank manufacturing method, which comprises the following steps: the blank making hydraulic machine comprises a support frame, a main working cylinder, a movable beam and a lower punching cylinder, wherein the support frame comprises a base and an upper beam positioned above the base, the main working cylinder is arranged in the upper beam, the main working cylinder is provided with a piston rod capable of extending downwards, the movable beam is connected with the piston rod, the lower punching cylinder is arranged in the base, the lower punching cylinder is provided with a lower punch capable of extending upwards, the blank making hydraulic machine further comprises an upper punching cylinder arranged in the movable beam, the upper punching cylinder and the lower punching cylinder are positioned on the same axis, and the upper punching cylinder is provided with an upper punch capable of extending downwards. The invention can effectively improve the punching precision of the flange blank and is not easy to generate punching deviation.
Description
Technical Field
The invention relates to the field of forging and pressing manufacturing, in particular to a blank manufacturing hydraulic machine and a double-punch flange blank manufacturing method.
Background
At present, flange blank-making hydraulic presses adopt a multi-station movable workbench to carry out upsetting, pre-punching and final punching; the structural style leads the two working procedures of pre-punching and final punching, and a workbench is required to be moved between the two working procedures to move a proper forging tool to the center of the hydraulic press; the punching mode is a swing type punch, namely the punch is arranged on the outer side of the equipment, and the pre-punching and the final punching need to swing the punch to the center of the equipment twice; the movement of the movable workbench and the swing type punch generates deviation of center positioning of pre-punching and final punching, so that deviation or defects of punching are formed in the final formed flange blank.
Disclosure of Invention
In order to solve the technical problem, a novel blank-making hydraulic machine is provided, a central hole of a flange blank can be accurately formed, and punching deviation is not easy to generate.
The utility model provides a base manufacturing hydraulic press, includes support frame, main working cylinder, walking beam and lower punch cylinder, the support frame includes the base and is located the upper beam of base top, main working cylinder locates in the upper beam, main working cylinder has the piston rod that can stretch out downwards, the walking beam with the piston rod links to each other, lower punch cylinder locates in the base, lower punch cylinder has the lower punch that can upwards stretch out, its characterized in that: the movable beam is characterized by further comprising an upper punching cylinder arranged in the movable beam, the upper punching cylinder and the lower punching cylinder are located on the same axis, and the upper punching cylinder is provided with an upper punch capable of extending downwards.
When the punching machine is used, the main working cylinder drives the movable beam to move downwards to upset a blank, the upper punch and the lower punch perform lifting action, and a through center hole is punched in the upset blank.
As a preferred embodiment of the present invention, the upper punching cylinder and the lower punching cylinder are located at a central axis of the supporting frame.
As a preferred embodiment of the present invention, the centering device further includes a centering cylinder fixed on both sides of the support frame, and the centering cylinder has a centering piston rod capable of extending toward the central axis of the support frame. The blank is centered by the centering piston rod, so that the deviation in punching is further reduced.
In a preferred embodiment of the present invention, an upsetting press plate is provided on a bottom surface of the movable beam, and the upsetting press plate has a guide hole through which the upper punch protrudes.
As a preferred embodiment of the present invention, a working platform is provided on the upper surface of the base, a relief passage is provided at the center of the working platform for the lower punch to pass through, and the blank punching process is performed on the working platform, so that the working platform has better stability and durability.
As a preferred embodiment of the present invention, the working table has an accommodating chamber, the abdicating channel passes through the accommodating chamber, a pushing cylinder is disposed on an inner side wall of the accommodating chamber, the pushing cylinder has a push rod capable of extending toward the abdicating channel, and an opening hole communicated with the outside is disposed on an inner side wall of the accommodating chamber facing the push rod. The excess material after punching can be pushed out of the workbench by the pushing cylinder.
A double-punch flange blank making method of the blank making hydraulic machine comprises the following steps: the method comprises the following steps:
placing the blank on a workbench;
the main working cylinder drives the movable beam to press downwards, and the upsetting press plate positioned on the bottom surface of the movable beam upset the blank to a preset thickness;
the upsetting plate maintains a pressing-down state of the blank, the lower punch pre-punches the blank from the bottom surface thereof, and the upper punch pre-punches the blank from the top surface thereof;
and after the pre-punching is finished, the lower punch retracts into the lower punching cylinder, the upper punch continues to punch downwards, and the excess material in the blank punching is punched out, so that a through central hole is formed in the blank.
By adopting the punching method, the upper punch and the lower punch can complete punching only by lifting action without adopting a swing type punch or respectively arranging the swing type punch on a moving platform, so that errors caused by swinging of the punches and action of the moving platform in the plane direction are avoided, and the punching precision is improved.
In a preferred embodiment of the method for producing a double-punch flange blank, the pre-punching stroke of the lower punch is 1/5-1/3 of the thickness of the blank after upsetting, and the pre-punching stroke of the upper punch is 1/2-3/5 of the thickness of the blank after upsetting.
As a preferred embodiment of the double-punch flange blank manufacturing method, before the movable beam is pressed down, the blank is centered on the geometric center of the workbench through a centering device, so that the punching precision is further improved.
After a central hole which is through up and down is punched on the blank, the punching residual material is pushed out of the workbench through a pushing cylinder.
In conclusion, the blank making hydraulic machine and the double-punch flange blank making method can accurately form the central hole of the flange blank, are not easy to generate punching deviation, and make remarkable progress compared with the prior art.
Drawings
The invention is further illustrated below with reference to the figures:
FIG. 1 is a longitudinal sectional view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a partial enlarged view of portion A of the present invention;
FIG. 4 is a flow chart of the operation of the present invention;
100-support frame, 101-upper beam, 102-base, 103-upright post, 104-fixing plate, 200-upsetting device, 201-main working cylinder, 202-movable beam, 203-cylinder body, 204-piston rod, 205-flange part, 206-upsetting press plate, 300-upper punching device, 301-upper punching cylinder, 302-upper punch, 400-lower punching device, 401-lower punching cylinder, 402-workbench, 403-lower punch, 404-abdicating channel, 405-accommodating cavity, 406-pushing cylinder, 407-push rod, 408-opening, 500-centering device, 501-centering cylinder, 502-centering piston rod and 600-blank.
Detailed Description
The invention is further illustrated by the following specific examples:
fig. 1 shows a blank making hydraulic press, which comprises a support frame 100, an upsetting device 200, an upper punching device 300, a lower punching device 400 and preferably a centering device 500.
The support frame 100 includes an upper beam 101, a base 102, and a column 103 connected between the upper beam 101 and the base 102. The upright posts 103 are correspondingly arranged at four corners of the upper beam 101 and the base 102.
The upsetting apparatus 200 includes a main cylinder 201 provided in the upper beam 101, a movable beam 202 driven to move up and down by the main cylinder 201, and an upsetting press plate 206 provided on the bottom surface of the movable beam 202.
The center of the upper beam 101 has a mounting hole, the main cylinder 201 is disposed in the mounting hole, and includes a cylinder body 203 and a piston rod 204, the cylinder body 203 is disposed in the mounting hole, the lower end of the cylinder body 203 has a flange portion 205 extending from the mounting hole, the flange portion 205 extends radially outward, and the mounting and fixing of the cylinder body 203 is achieved by a bolt passing through the flange portion 205 and screwed on the bottom surface of the upper beam 101. The piston rod 204 is provided in the cylinder 203, and can slide and move up and down in the cylinder 203, and the lower end of the piston rod 204 extends out from the bottom opening of the cylinder 203.
The movable beam 202 is connected to the bottom end of the piston rod 204 so as to be capable of being raised or lowered by the piston rod 204. In order to avoid the movable beam 202 from swinging or shaking during operation, a guide rail or a guide surface (not shown) adapted to the movable beam 202 is preferably disposed on the upright post 103, so that the movable beam 202 can be lifted and lowered under the guiding action of the guide rail or the guide surface, thereby reducing the swinging or shaking during operation.
The upper punching device 300 includes an upper punch cylinder 301 provided in the movable beam 202, and specifically, the movable beam 202 has a mounting hole at the center thereof, the upper punch cylinder 301 is placed in the mounting hole with its cylinder opening facing downward, and the upper punch cylinder 301 includes an upper punch 302 capable of extending downward. The upsetting press plate 206 has a guide hole through which the upper punch 302 passes.
The lower punch apparatus 400 includes a lower punch cylinder 401 provided in the base 102 and a table 402 provided on the base 102.
The base 102 has a mounting hole at the center thereof, in which a lower punch cylinder 401 is placed with its bore facing upward, the lower punch cylinder 401 including a lower punch 403 capable of protruding upward. The upper punching cylinder 301 and the lower punching cylinder 401 are located on the same axis, namely the central axis of the support frame 100, and are arranged oppositely up and down, and the diameters of the upper punch 302 and the lower punch 403 are equal.
As shown in fig. 1 and 2, the worktable 402 is disposed at the geometric center of the upper surface of the base 102, and the worktable 402 has a relief passage 404 at the center for the lower punch 403 to pass through.
As shown in fig. 3, the working table 402 further has an accommodating cavity 405, the abdicating channel 404 passes through the accommodating cavity 405, a horizontally arranged pushing cylinder 406 is disposed on an inner sidewall of the accommodating cavity 405, the pushing cylinder 406 has a push rod 407 capable of extending toward the abdicating channel 404, and an opening 408 communicating with the outside is disposed on an inner sidewall of the accommodating cavity 405 facing the push rod 407.
As shown in fig. 1 and 2, in order to ensure that the blank 600 is placed at the geometric center of the worktable 402, in the preferred embodiment of the present invention with the centering device 500, a fixing plate 104 integrally connected with the upright 103 is provided between the two uprights 103 at the left and right sides of the supporting frame 100. The centering device 500 is a centering cylinder 501 respectively arranged on the fixing plates 104 at two sides, and the two centering cylinders 501 are oppositely arranged and are located at the same horizontal height, and the height is preferably 50cm above the workbench 402. The two centering cylinders 501 have centering piston rods 502 that can extend toward each other at the same speed in the direction of the central axis of the support frame 100. Thus, after the centering piston rod 502 extends forwards, the blank 600 can be abutted and limited at the center position of the workbench 402, and the deviation in punching is further reduced.
Fig. 1 and 4 show a double-punch flange blank making method realized by the blank making hydraulic machine, which comprises the following steps:
placing the blank 600 on the table 402;
the centering device 500 centers the blank 600 so that the blank 600 is positioned at the geometric center of the worktable 402;
the main working cylinder 201 drives the movable beam 202 to press downwards, so that the upsetting press plate 206 upset the blank 600, when the upsetting press plate 206 upset the blank 600 to a preset thickness, the pressing downwards is stopped, and the upsetting press plate 206 keeps a pressing-down state on the blank 600;
the lower punching cylinder 401 drives the lower punch 403 to ascend, pre-punching the blank 600 from the bottom surface, and when the punching stroke reaches 1/5-1/3 of the thickness of the upset blank 600, the lower punch 403 stops punching and maintains the original position;
the main working cylinder 201 drives the movable beam 202 to slightly lift so as to release deformation stress, then the upper punching cylinder 301 drives the upper punch 302 to descend, the blank 600 is pre-punched from the top surface, and when the punching stroke reaches 1/2-3/5 of the thickness of the blank 600 after upsetting, the upper punch 302 stops punching and maintains the original position;
the lower punch 403 is lowered into the lower punch cylinder 401, the upper punch 302 is kept still, the main working cylinder 201 drives the movable beam 202 to move downwards, the upsetting press plate 206 presses the upper surface of the blank 600, and the bulge generated by punching on the upper surface of the blank 600 is flattened;
the upper punch 302 continues to punch downwards, and punches out the residual materials in the blank 600 to form a through hole which is through up and down;
the pushing cylinder 406 pushes the punching residual material out of the workbench 402 from the accommodating cavity 405, and each mechanism is reset, so that a whole set of punching action is completed.
In the double-punch flange blank manufacturing method, the upper punch 302 and the lower punch 403 can complete punching only by lifting, a swing type punch is not needed, and the upper punch and the lower punch are not needed to be respectively arranged on a moving platform, so that errors caused by swinging of the punches and planar movement of the moving platform are avoided, and the punching precision is improved.
In sum, the invention has the advantages that: each punching component only performs lifting action without performing swinging action or action in the plane direction. Therefore, the error caused by swinging or planar action is avoided, and the punching precision is improved. In addition, the centering device is arranged, so that the blank can be always aligned to the geometric center of the workbench, and the precision is further improved.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (10)
1. A blank making hydraulic machine comprises a support frame (100), a main working cylinder (201), a movable beam (202) and a lower punching cylinder (401), wherein the support frame (100) comprises a base (102) and an upper beam (101) positioned above the base (102), the main working cylinder (201) is arranged in the upper beam (101), the main working cylinder (201) is provided with a piston rod (204) capable of extending downwards, the movable beam (202) is connected with the piston rod (204), the lower punching cylinder (401) is arranged in the base (102), the lower punching cylinder (401) is provided with a lower punch (403) capable of extending upwards, and the blank making hydraulic machine is characterized in that: the movable beam punching device further comprises an upper punching cylinder (301) arranged in the movable beam (202), the upper punching cylinder (301) and the lower punching cylinder (401) are on the same axis, and the upper punching cylinder (301) is provided with an upper punch (302) capable of extending downwards.
2. Hydraulic press for blanking according to claim 1, characterized in that: the upper punching cylinder (301) and the lower punching cylinder (401) are located on the central axis of the support frame (100).
3. Hydraulic press for blanking according to claim 2, characterized in that: still include centering device (500), centering device (500) is including being fixed in centering hydro-cylinder (501) of support frame (100) both sides, centering hydro-cylinder (501) have can towards centering piston rod (502) that the axis direction of support frame (100) stretches out in opposite directions.
4. Hydraulic press for blanking according to claim 1, characterized in that: be equipped with on the bottom surface of walking beam (202) and upset clamp plate (206), have on upset clamp plate (206) and supply last drift (302) guiding hole that stretches out downwards.
5. Hydraulic press for blanking according to claim 4, characterized in that: a workbench (402) is arranged on the upper surface of the base (102), and a yielding channel (404) for the lower punch (403) to pass through is arranged at the center of the workbench (402).
6. Hydraulic press for blanking according to claim 5, characterized in that: there is holding chamber (405) in workstation (402), let a channel (404) follow pass in holding chamber (405), be equipped with on the inside wall of holding chamber (405) and promote cylinder (406), promote cylinder (406) have can court push rod (407) that let a channel (404) direction stretch out, holding chamber (405) face court have trompil (408) with external intercommunication on the inside wall of push rod (407).
7. A double-punch flange blank manufacturing method of the blank manufacturing hydraulic machine as claimed in claims 1 to 6, characterized in that: the method comprises the following steps:
placing a blank (600) on a table (402);
the main working cylinder (201) drives the movable beam (202) to press downwards, and the upsetting press plate (206) on the bottom surface of the movable beam (202) upset the blank (600) to a preset thickness;
the upsetting press plate (206) maintains a downward pressing state of the blank (600), a lower punch (403) pre-punches the blank (600) from a bottom surface of the blank (600), and then an upper punch (302) pre-punches the blank (600) from a top surface of the blank (600);
after the pre-punching is finished, the lower punch (403) is lowered into the lower punch cylinder (401), the upper punch (302) continues to punch downwards, the excess materials in the blank (600) punching are punched out, and therefore a through center hole is formed in the blank (600).
8. A method of forming a dual-punch flange as defined in claim 7, wherein: the pre-punching stroke of the lower punch (403) is 1/5-1/3 of the thickness of the blank (600) after upsetting, and the pre-punching stroke of the upper punch (302) is 1/2-3/5 of the thickness of the blank (600) after upsetting.
9. A method of forming a dual-punch flange as defined in claim 8, wherein: -centering the blank (600) in the geometrical centre of the table (402) by means of a centering device (500) before the travelling beam (202) is pressed down.
10. A method of forming a dual-punch flange as defined in claim 9, wherein: after a vertically through center hole is punched in the blank (600), the punching residual material is pushed out of the workbench (402) through a pushing air cylinder (406).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273178.9A CN111451426B (en) | 2020-04-09 | 2020-04-09 | Blank making hydraulic machine and double-punch flange blank making method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010273178.9A CN111451426B (en) | 2020-04-09 | 2020-04-09 | Blank making hydraulic machine and double-punch flange blank making method |
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| CN111451426A true CN111451426A (en) | 2020-07-28 |
| CN111451426B CN111451426B (en) | 2022-03-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139414A (en) * | 2020-09-09 | 2020-12-29 | 浙江恒鼎机械有限公司 | Forging system and forging method for hub flange plate |
| CN112893730A (en) * | 2021-03-18 | 2021-06-04 | 泉州市成裕机械设备有限公司 | Forging forming device for excavator flange |
| CN113198961A (en) * | 2021-05-17 | 2021-08-03 | 定襄县宇特法兰有限公司 | Automatic production process of large flange |
| CN114178427A (en) * | 2021-12-17 | 2022-03-15 | 常州和仕达机械装备制造有限公司 | One-step forming device and process for ring blank |
| CN114210871A (en) * | 2021-12-17 | 2022-03-22 | 常州和仕达机械装备制造有限公司 | One-step forming device for ring blank |
| CN115026233A (en) * | 2022-05-30 | 2022-09-09 | 湖州机床厂有限公司 | Ring forging hydraulic press and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139414A (en) * | 2020-09-09 | 2020-12-29 | 浙江恒鼎机械有限公司 | Forging system and forging method for hub flange plate |
| CN112893730A (en) * | 2021-03-18 | 2021-06-04 | 泉州市成裕机械设备有限公司 | Forging forming device for excavator flange |
| CN113198961A (en) * | 2021-05-17 | 2021-08-03 | 定襄县宇特法兰有限公司 | Automatic production process of large flange |
| CN114178427A (en) * | 2021-12-17 | 2022-03-15 | 常州和仕达机械装备制造有限公司 | One-step forming device and process for ring blank |
| CN114210871A (en) * | 2021-12-17 | 2022-03-22 | 常州和仕达机械装备制造有限公司 | One-step forming device for ring blank |
| CN115026233A (en) * | 2022-05-30 | 2022-09-09 | 湖州机床厂有限公司 | Ring forging hydraulic press and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111451426B (en) | 2022-03-11 |
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