CN114535385A - Punch forming equipment and process for thin-wall inner web rib plate - Google Patents
Punch forming equipment and process for thin-wall inner web rib plate Download PDFInfo
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- CN114535385A CN114535385A CN202210194772.8A CN202210194772A CN114535385A CN 114535385 A CN114535385 A CN 114535385A CN 202210194772 A CN202210194772 A CN 202210194772A CN 114535385 A CN114535385 A CN 114535385A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a punch forming device and a punch forming process for a thin-wall inner web rib plate, wherein the device comprises a workbench, a die mounting table, a modular die, a main hydraulic cylinder and a main hydraulic cylinder mounting plate; the workbench is used for placing a workpiece; the die mounting table is arranged above the workbench and corresponds to the workpiece; the main hydraulic cylinder is arranged in the middle area of the top end of the mold mounting table, and the bottom of the main hydraulic cylinder is connected with the mold mounting table through a main hydraulic cylinder mounting plate; a plurality of modular mold mounting holes are arranged in a matrix form at the lower end surface of the mold mounting table; the modularized dies are respectively and longitudinally arranged in the modularized die mounting holes correspondingly. The process can realize gradient loading, gradually increase the reduction and realize the accurate control of different reductions. Compared with the prior art, the high-productivity and low-energy consumption structure provides a new idea for the forming technology of the structure, and is an advanced technology for manufacturing the thin-wall inner web rib plate with high performance, high efficiency and low cost.
Description
Technical Field
The invention relates to the technical field of advanced aerospace manufacturing and plastic processing, in particular to punching forming equipment and a punching forming process for a thin-wall inner web rib plate.
Background
Rapid development of aerospace equipment requires the use of lightweight, high load-bearing components. The thin-wall structure with the inner web ribs has the advantages of light weight, high rigidity, strong bearing capacity and the like, and is widely applied to aerospace equipment. However, the complex geometry of the structure makes it difficult to manufacture. How to manufacture the thin-wall plate with the inner web rib, which has high performance, high efficiency and low cost, has become the leading edge of the aerospace equipment manufacturing technology.
The radial enveloping thin-wall structure is commonly applied to the aerospace field, the deep sea field and the like, for example, a storage tank of a rocket propellant is an aluminum alloy radial enveloping thin-wall structure, the traditional manufacturing process of the structure at present comprises cutting, sheet metal and forging, the forming process relates to material reduction manufacturing, the production efficiency is low, the production cost is high, and the material utilization rate is low.
Disclosure of Invention
In order to overcome the problems of insufficient production efficiency, high production cost, low material utilization rate and the like caused by the traditional processes of manufacturing equipment such as sheet metal, cutting and the like of the thin-wall inner web rib plate, the invention provides the punching forming equipment and the process of the thin-wall inner web rib plate, which can realize the production of products in different forms, and a plurality of displacement and load sensors can accurately control the punching press reduction and adjust the press load in real time, and meanwhile, the mechanical property of the product is ensured by the built-in heating device of a pressure head and the proposed step-by-step gradient press, and the quality of the product is ensured.
The technical scheme adopted by the invention is as follows:
the invention provides punching forming equipment for a thin-wall inner web rib plate, which comprises a workbench, a die mounting table, a modular die, a main hydraulic cylinder and a main hydraulic cylinder mounting plate, wherein the die mounting table is arranged on the workbench; the workbench is used for placing a workpiece; the die mounting table is arranged above the workbench and corresponds to the workpiece; the main hydraulic cylinder is arranged in the middle area of the top end of the mold mounting table, and the bottom of the main hydraulic cylinder is connected with the mold mounting table through a main hydraulic cylinder mounting plate; a plurality of modular mold mounting holes are arranged in a matrix form at the lower end surface of the mold mounting table; the modularized dies are respectively and longitudinally arranged in the modularized die mounting holes correspondingly.
Further, the modular die comprises a fine adjustment hydraulic cylinder and a die pressure head; the fine adjustment hydraulic cylinders are respectively and correspondingly arranged in the modular die mounting holes; and the die pressure heads are respectively and correspondingly arranged at the bottom ends of the fine adjustment hydraulic cylinders.
Furthermore, the fine adjustment hydraulic cylinder is in threaded connection with the modular die mounting hole.
Furthermore, displacement sensors and pressure sensors are respectively installed on two sides of the top end of the fine adjustment hydraulic cylinder.
Furthermore, a heating device is arranged inside the die pressing head.
A punch forming process of a thin-wall inner web rib plate comprises the following steps:
s1, mounting the modular mold on a mold mounting table, and mounting a workpiece on a workbench;
s2, setting the initial feeding amount of the workpiece, setting the reduction of the modular die to be x1, and setting the temperature of a die pressure head;
s3, the mold mounting table is controlled to be integrally pressed down through a main hydraulic cylinder, the first-stage modular mold model I is firstly contacted with a workpiece, a pressure sensor feeds back to a master control system to detect the contact between the modular mold and the workpiece, the master control system controls the mold pressure head to be heated to a set temperature, the integral mold mounting table is pressed down to a set pressing amount, and the modular mold is pressed down to be finely adjusted to accurately control the pressing amount;
s4, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
s5, adjusting the die pressure head of the second-stage modular die Mode II to extend downwards for a distance of x1 in advance through a fine adjustment hydraulic cylinder, and setting the pressing amount of Mode II as x 2;
s6, the main hydraulic cylinder control mold mounting table descends, and the Mode I and the Mode II are simultaneously contacted with the workpiece; the pressure sensor feeds back to the master control system to detect the contact between the modular die and the workpiece, the master control system controls die pressure heads of the Mode I and the Mode II to be heated to a set temperature, the integral die mounting table is pressed down to a set pressing amount, and the modular die is pressed down to be finely adjusted to accurately control the pressing amount;
s7, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
s8, adjusting the die pressure head of the third-stage modular die Mode III to extend downwards for a distance of x1+ x2 in advance through a fine adjustment hydraulic cylinder, and setting the reduction of Mode III to be x 3;
s9, the main hydraulic cylinder control mold mounting table descends, and the Mode I, the Mode II and the Mode III simultaneously contact with the workpiece; the pressure sensor feeds back to the master control system to detect the contact between the modular die and the workpiece, the master control system controls die press heads of the Mode I, the Mode II and the Mode III to be heated to a set temperature, the whole die mounting table is pressed down to a set pressing amount, and the modular die is pressed down for fine adjustment to accurately control the pressing amount;
s10, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
by analogy, a thin-wall inner web rib plate can be formed after n sections of punching, and the height of a rib plate is equal to the sum of the pressing amounts of the multiple sections of pressing: h ═ x1+ x2+ x3+. + xn.
Compared with the prior art, the invention has the following beneficial effects:
the invention can realize continuous, efficient and stable production of punch forming of the thin-wall inner web rib plate, and can flexibly realize production of the thin-wall inner web rib plate in various forms and specifications by adjusting the modular die, and the plurality of displacement and pressure sensors can accurately control the punching press reduction and adjust the press load in real time, and meanwhile, the heating device arranged in the pressure head and the proposed step-by-step gradient press ensure the mechanical property of the product and provide guarantee for the quality of the product. Compared with the prior art, the high productivity and low energy consumption of the punching forming equipment and the punching forming process of the thin-wall inner web rib plate provide a new idea for the forming technology of the structure, and the technology is an advanced technology for manufacturing the thin-wall inner web rib plate with high performance, high efficiency and low cost.
Drawings
Fig. 1 is a schematic structural diagram of a punching forming device for a thin-wall inner rib plate provided by the invention;
FIG. 2 is a schematic view of the structure of the mold mounting station of FIG. 1;
FIG. 3 is a schematic view of the modular mold of FIG. 1;
fig. 4 is a schematic view of the die ram of fig. 3.
Wherein, the reference numbers: 1-a workbench; 2-a die mounting table; 21-modular mold mounting holes; 22-oil passage through hole; 3-a modular mold; 31-fine adjustment hydraulic cylinders; 32-a die ram; 4-main hydraulic cylinder; 5-main cylinder mounting plate; 6-workpiece.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not mean that a device or an element must have a specific orientation, be configured in a specific orientation, and be operated.
Referring to fig. 1 to 4, a concrete structure of an embodiment of a punching forming equipment for a thin-wall inner rib plate provided by the invention is shown. The equipment comprises a workbench 1, a mould mounting table 2, a modular mould 3, a main hydraulic cylinder 4 and a main hydraulic cylinder mounting plate 5; the workbench 1 is used for placing a workpiece 6; the die mounting table 2 is arranged above the workbench 1 and corresponds to the workpiece 6; the main hydraulic cylinder 4 is arranged in the middle area of the top end of the die mounting table 2, and the bottom of the main hydraulic cylinder 4 is fixedly connected with the die mounting table 2 through a main hydraulic cylinder mounting plate 5; the lower end surface of the mold mounting table 2 is provided with a plurality of modular mold mounting holes 21 arranged in a matrix form, in the embodiment, fifteen modular mold mounting holes 21 are arranged in the lower end surface of the mold mounting table 2 in a matrix form and are arranged in three rows and five columns, and each column of modular molds 3 is a first-level mold; the modular molds 3 are respectively and longitudinally arranged in the modular mold mounting holes 21.
The modular mould 3 comprises a trimming hydraulic cylinder 31 and a mould ram 32; the fine adjustment hydraulic cylinders 31 are respectively and correspondingly screwed in the modular mold mounting holes 21, and oil way through holes 22 of the fine adjustment hydraulic cylinders 31 are respectively arranged in the modular mold mounting holes 21; the die pressing heads 32 are respectively and correspondingly arranged at the bottom ends of the fine adjustment hydraulic cylinders 31; wherein, displacement sensors and pressure sensors are respectively arranged on two sides of the top end of the fine adjustment hydraulic cylinder 31; the die ram 32 is internally provided with a heating device.
In operation, the master cylinder 4 controls the overall depression of the mold mounting station 2, and each modular mold 3 operates according to a set temperature, displacement, and depression load.
A punch forming process of a thin-wall inner web rib plate comprises the following steps:
s1, mounting the modular die on the die mounting table 2, and mounting the workpiece 6 on the workbench 1;
s2, setting the initial feeding amount of the workpiece 6, setting the reduction amount of the first-stage modular die Mode I as x1, and setting the temperature of the die ram 32;
s3, the mold mounting table 2 is controlled to be pressed down integrally through the main hydraulic cylinder 4, the first-stage modular mold Mode I is firstly contacted with the workpiece 6, the pressure sensor feeds back to the main control system to detect the contact between the modular mold 3 and the workpiece 6, the main control system controls the mold press head 32 to be heated to a set temperature, the integral mold mounting table 2 is pressed down to a set pressing amount, and the modular mold 3 is pressed down to be finely adjusted to accurately control the pressing amount;
s4, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table 2 to ascend by a main hydraulic cylinder 4, and controlling the workpiece 6 to feed forward for a certain distance by the workbench 1;
s5, adjusting the die pressure head 32 of the second-stage modular die model II to extend downwards for a distance of x1 in advance through the fine adjustment hydraulic cylinder 31, and setting the reduction of the model II as x 2;
s6, the master cylinder 4 controls the mold mounting table 2 to descend, and the Mode I and the Mode II are simultaneously contacted with the workpiece 6; the pressure sensor feeds back to a master control system to detect the contact between the modular dies 3 and the workpiece 6, the master control system controls the die pressing heads 32 of the model I and the model II to be heated to a set temperature, the integral die mounting table 2 is pressed down to a set pressing amount, and each level of modular dies 3 are pressed down and finely adjusted to accurately control the pressing amount;
s7, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold 3 reaches a set value, controlling the mold mounting table 2 to ascend by a main hydraulic cylinder 4, and controlling the workpiece 6 to feed forward for a certain distance by the workbench 1;
s8, adjusting the die press head 32 of the third-stage modular die Mode III to extend downwards for a distance of x1+ x2 in advance through the fine adjustment hydraulic cylinder 31, and setting the reduction of Mode III to be x 3;
s9, the master cylinder 4 controls the mold mounting table 2 to descend, and the Mode I, the Mode II and the Mode III are simultaneously contacted with the workpiece 6; the pressure sensor feeds back to a master control system to detect the contact between the modular dies 3 and the workpiece 6, the master control system controls die pressing heads 32 of the Mode I, the Mode II and the Mode III to be heated to a set temperature, the integral die mounting table 2 is pressed down to a set pressing amount, and each stage of modular dies 3 are pressed down and finely adjusted to accurately control the pressing amount;
s10, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table 2 to ascend by a main hydraulic cylinder 4, and controlling the workpiece 6 to feed forward for a certain distance by the workbench 1;
by analogy, a thin-wall inner web rib plate can be formed after n sections of punching, and the height of a rib plate is equal to the sum of the pressing amounts of the multiple sections of pressing: h ═ x1+ x2+ x3+ - + xn; in this embodiment, n is 5, so the remaining steps include:
adjusting the die pressure head 32 of the fourth-stage modular die Mode IV to extend downwards for a distance of x1+ x2+ x3 in advance through the fine adjustment hydraulic cylinder 31, and setting the pressing amount of Mode III to be x 4;
the main hydraulic cylinder 4 controls the mold mounting table 2 to descend, and the Mode I, the Mode II, the Mode III and the Mode IV are simultaneously contacted with the workpiece 6; the pressure sensor feeds back to a master control system to detect the contact between the modular dies 3 and the workpiece 6, the master control system controls the die pressing heads 32 of the model I, the model II, the model III and the model IV to be heated to a set temperature, the whole die mounting table 2 is pressed down to a set pressing amount, and each stage of modular dies 3 are pressed down and finely adjusted to accurately control the pressing amount;
the displacement sensor feeds back to the main control system to detect that the pressing amount of the modular mold reaches a set value, the main hydraulic cylinder 4 controls the mold mounting table 2 to ascend, and the workbench 1 controls the workpiece 6 to feed forward for a certain distance;
adjusting the die pressure head 32 of a fifth-stage modular die Mode V to be downwards extended by a distance of x1+ x2+ x3+ x4 in advance through a fine adjustment hydraulic cylinder 31, and setting the pressing amount of Mode III as x 5;
the master hydraulic cylinder 4 controls the mold mounting table 2 to descend, and the Mode I, the Mode II, the Mode III, the Mode IV and the Mode V are simultaneously contacted with the workpiece 6; the pressure sensor feeds back to a master control system to detect the contact between the modular dies 3 and the workpiece 6, the master control system controls die pressing heads 32 of the Mode I, the Mode II, the Mode III, the Mode IV and the Mode V to be heated to a set temperature, the integral die mounting table 2 is pressed down to a set pressing amount, and each level of modular dies 3 are pressed down and finely adjusted to accurately control the pressing amount;
the displacement sensor feeds back to the main control system to detect that the pressing amount of the modular mold reaches a set value, the main hydraulic cylinder 4 controls the mold mounting table 2 to ascend, and the workbench 1 controls the workpiece 6 to feed forwards for a certain distance.
After 5 sections of punching, a thin-wall inner web rib plate can be formed, and the height of the rib plate is equal to the sum of the pressing amount of the multiple sections of pressing, namely h ═ x1+ x2+ x3+ x4+ x 5.
The invention can replace the traditional manufacturing method of reducing materials such as cutting, sheet metal, forging and the like, and the gradient stamping can greatly avoid plastic accumulation and residual stress and can avoid the processing defects such as microcracks and the like caused by other processing methods.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides a stamping forming of belly floor is equipped in thin wall which characterized in that: the equipment comprises a workbench, a mold mounting table, a modular mold, a main hydraulic cylinder and a main hydraulic cylinder mounting plate; the workbench is used for placing a workpiece; the die mounting table is arranged above the workbench and corresponds to the workpiece; the main hydraulic cylinder is arranged in the middle area of the top end of the mold mounting table, and the bottom of the main hydraulic cylinder is connected with the mold mounting table through a main hydraulic cylinder mounting plate; a plurality of modular mold mounting holes are arranged in a matrix form at the lower end surface of the mold mounting table; the modularized dies are respectively and longitudinally arranged in the modularized die mounting holes correspondingly.
2. The equipment for punch forming of the thin-walled inner rib plate as claimed in claim 1, wherein: the modular die comprises a fine adjustment hydraulic cylinder and a die pressure head; the fine adjustment hydraulic cylinders are respectively and correspondingly arranged in the modular die mounting holes; and the die pressure heads are respectively and correspondingly arranged at the bottom ends of the fine adjustment hydraulic cylinders.
3. The apparatus for punch forming a thin-walled inner web floor as claimed in claim 2, wherein: and the fine adjustment hydraulic cylinder is in threaded connection with the modular die mounting hole.
4. The equipment for punch forming of the thin-walled inner rib plate as claimed in claim 2, wherein: and displacement sensors and pressure sensors are respectively installed on two sides of the top end of the fine adjustment hydraulic cylinder.
5. The equipment for punch forming of the thin-walled inner rib plate as claimed in claim 4, wherein: and a heating device is arranged inside the die pressure head.
6. A process for the stamping forming of thin-walled internal rib panels for use in the apparatus of claim 4, said process comprising the steps of:
s1, mounting the modular die on a die mounting table, and mounting a workpiece on a workbench;
s2, setting the initial feeding amount of the workpiece, setting the reduction amount of the modular die to be x1, and setting the temperature of the die pressure head;
s3, the mold mounting table is controlled to be integrally pressed down through a main hydraulic cylinder, the first-stage modular mold Mode I is firstly contacted with a workpiece, a pressure sensor feeds back to a master control system to detect the contact of the modular mold and the workpiece, the master control system controls the heating of a mold pressure head to a set temperature, the integral mold mounting table is pressed down to a set pressing amount, and the modular mold is pressed down to be finely adjusted to accurately control the pressing amount;
s4, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
s5, adjusting the die pressure head of the second-stage modular die Mode II to extend downwards for a distance of x1 in advance through a fine adjustment hydraulic cylinder, and setting the pressing amount of Mode II as x 2;
s6, the main hydraulic cylinder control mold mounting table descends, and the Mode I and the Mode II are simultaneously contacted with the workpiece; the pressure sensor feeds back to the master control system to detect the contact between the modular die and the workpiece, the master control system controls die pressure heads of the Mode I and the Mode II to be heated to a set temperature, the integral die mounting table is pressed down to a set pressing amount, and the modular die is pressed down to be finely adjusted to accurately control the pressing amount;
s7, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
s8, adjusting the die pressure head of the third-stage modular die Mode III to extend downwards for a distance of x1+ x2 in advance through a fine adjustment hydraulic cylinder, and setting the reduction of Mode III to be x 3;
s9, the main hydraulic cylinder control mold mounting table descends, and the Mode I, the Mode II and the Mode III simultaneously contact with the workpiece; the pressure sensor feeds back to the master control system to detect the contact between the modular die and the workpiece, the master control system controls die press heads of the Mode I, the Mode II and the Mode III to be heated to a set temperature, the whole die mounting table is pressed down to a set pressing amount, and the modular die is pressed down for fine adjustment to accurately control the pressing amount;
s10, feeding back the displacement sensor to a main control system to detect that the pressing amount of the modular mold reaches a set value, controlling the mold mounting table to ascend by a main hydraulic cylinder, and controlling the workpiece to feed forward for a certain distance by a workbench;
by analogy, a thin-wall inner web rib plate can be formed after n sections of punching, and the height of a rib plate is equal to the sum of the pressing amounts of the multiple sections of pressing: h ═ x1+ x2+ x3+. + xn.
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| CN202210194772.8A CN114535385B (en) | 2022-03-01 | 2022-03-01 | Stamping forming equipment and process for thin-wall inner web rib plate |
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