CN112453163A

CN112453163A - Universal upper pressing structure for pull die and using method thereof

Info

Publication number: CN112453163A
Application number: CN202011000316.2A
Authority: CN
Inventors: 曹大宁; 门向南; 陈根发
Original assignee: Chengdu Aircraft Industrial Group Co Ltd
Current assignee: Chengdu Aircraft Industrial Group Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-03-09
Anticipated expiration: 2040-09-22
Also published as: CN112453163B

Abstract

The utility model relates to the technical field of machining, a draw general last bearing structure of section mould and application method thereof is disclosed, general last bearing structure includes the base member and sets up flexible component and the supporting mechanism on the base member, and the flexible component sets up in the bottom surface of base member, can freely contract, and its bottom surface shape and the shape looks adaptation of shaping frock, supporting mechanism set up around the base member and with be connected between the base member detachable, be provided with the otic placode around the base member, be provided with the earhole that is used for installing the lug on the otic placode. The utility model provides a general structure profile of pressing has certain elasticity on, can reach general function to have the characteristic of high strength, in the course of working, can not cause the potential safety hazard.

Description

Universal upper pressing structure for pull die and using method thereof

Technical Field

The application relates to the technical field of machining, in particular to a universal pressing structure for a drawing die and a using method of the universal pressing structure.

Background

The stretching forming is a process of applying pulling force and bending moment to the stretched wool through a jaw of stretching equipment to enable the wool to be gradually attached to the molded surface of the forming tool. The stretch forming process is widely applied to sheet metal processing, in particular to the forming processing of airplane skin parts. At present, the production of skin parts with low chord height and gentle curvature mainly has the following problems: whether the forming tool of the multi-curvature skin part with low chord height needs to be pressed or not does not have a clear judgment standard, so that the situation that no pressing structure or more pressing structures are needed frequently occurs in the actual production process of the part, the production period of the part is limited, and meanwhile a great amount of cost waste is caused.

Therefore, in order to accelerate the development and production progress of parts and improve the structural form of the skin part forming tool, it is imperative to design and develop a set of pull-type dies with a general upper pressing structure for forming low-chord high-curvature skin parts.

Disclosure of Invention

To solve the problems and defects in the prior art, the application provides a general pressing structure of a drawing die and a using method thereof.

In order to achieve the above object, the technical solution of the present application is as follows:

the utility model provides a draw general last pressure structure of section mould, includes the base member and sets up flexible component and supporting mechanism on the base member, flexible component sets up in the bottom surface of base member, can freely contract, and the shape of its bottom surface can with the shape looks adaptation of shaping frock, supporting mechanism sets up around the base member and be connected with detachable between the base member, be provided with the otic placode around the base member, is provided with the earhole that is used for installing the lug on the otic placode.

Preferably, the flexible component includes that a plurality of arrays set up the flexible mechanism on the base member, the flexible mechanism includes end cap, compression spring, bracing piece and compresses tightly the base, compression spring is located between end cap and the bracing piece and both ends are connected with both respectively, and the other end of bracing piece is provided with the fork ear, is provided with a pair of coaxial through-hole on the fork ear, is provided with the round pin axle in the through-hole, and the bracing piece rotates with compressing tightly the base through the round pin axle to be connected.

Preferably, the base body is of a flat plate structure, a plurality of stepped holes penetrating through the top surface and the bottom surface of the flat plate are formed in the flat plate, the flexible mechanism is installed on the base body through the stepped holes, the size of each stepped hole is matched with that of the flexible mechanism, and a baffle is further arranged at the top of the base body.

Preferably, the supporting mechanism comprises a supporting column, a circle of bosses are arranged on the supporting column along the circumferential direction, supporting seats are arranged on the periphery of the base body, supporting holes penetrate through the supporting seats, the aperture of each supporting hole is smaller than that of each boss, the upper end of the supporting column is located in each supporting hole, the top of each supporting column is provided with a locking component, and each locking component is located outside each supporting hole.

Preferably, the bottom of the lower end of the supporting column is provided with a supporting base.

Preferably, the locking part comprises a locking plate, a first locking bolt and a second locking bolt, the locking plate is provided with a first locking hole and a second locking hole, the top of the upper end of the support column is provided with a threaded hole, one end of the first locking bolt penetrates through the first locking hole and extends into the threaded hole, and the second locking bolt is located in the second locking hole and is in threaded connection with the second locking hole.

Preferably, the universal pressing structure further comprises a cushion block.

The use method of the universal upper pressing structure of the pull die is characterized in that: the method specifically comprises the following steps:

s1, hoisting the lower die of the drawing die to the platform of the drawing machine;

s2, placing the sheet metal blank on the lower die of the drawing die, and plugging the end of the blank into a jaw of a drawing machine;

s3, placing the cushion block on the sheet metal wool;

s4, loosening the locking component, loosening the supporting mechanism in the universal pressing structure, lifting the universal pressing structure to a stretcher by using lifting equipment, and placing the universal pressing structure on a cushion block;

s5, lifting the telescopic arm of the stretcher, and fixing the universal pressing structure by using the supporting arm of the stretcher;

s6, the telescopic arm contracts to provide pressure for the universal pressing structure, the flexible part is adaptively adjusted according to the shape of the forming tool, so that the shape of the bottom surface of the flexible part is matched with that of the sheet metal blank forming tool, and after the assembly is finished, the jaw clamping starts to stretch and form the sheet metal blank;

and S7, opening the telescopic arm after the sheet metal wool is stretched and formed, hanging the universal upward-pressing structure from the stretcher, screwing the locking part (8) tightly, and then partially placing the whole base body on the supporting mechanism.

The beneficial effect of this application:

(1) this application is dedicated to and is handled the problem that whether low chord height, many curvatures class covering part take shape frock need go up the pressure structure, designs and has developed one set and drawn the general structure of pressing of section mould, and the general structure profile of pressing of going up in this application has certain elasticity, can reach general function to have the characteristic of high strength, in the course of working, can not cause the potential safety hazard.

(2) In this application, the shape looks adaptation of the shaping frock of the bottom surface shape of flexible component and part, consequently, the structure adaptability is better in this application's general upward pressing, can be used for more part profiles as far as.

(3) In this application, the bracing piece of flexible component with compress tightly and rotate through the round pin axle between the base and be connected, consequently, compress tightly the base and can carry out the adaptability adjustment according to the shape of part shaping frock, further increased the flexibility and the elasticity of general structure of pressing on.

(4) In this application, flexible mechanism installs on the base member through the shoulder hole rather than shape and size looks adaptation, need not to use too much accessories between the two and couples together both, consequently, the holistic structure of device is simpler and ingenious.

(5) In this application, in order to avoid leaving the frock vestige on the surface of part during stretch forming, consequently increased the frock vestige that the cushion structure was used for eliminating when shaping specially.

Drawings

The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:

FIG. 1 is a perspective view of a universal pressing structure of the present application;

FIG. 2 is a front view of a universal press-up structure of the present application;

FIG. 3 is a side view of the universal press up structure of the present application

FIG. 4 is a top view of a generic hold-down structure of the present application;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic illustration of the matrix structure of the present application;

FIG. 7 is a schematic view of the flexible mechanism of the present application;

fig. 8 is a schematic structural diagram of the support mechanism of the present application.

In the figure:

1. a substrate; 2. a flexible member; 3. a support mechanism; 4. lifting lugs; 5. a fork ear; 6. a pin shaft; 7. a baffle plate; 8. a locking member; 9. a support base; 10. cushion blocks; 11. an ear plate; 12. a stepped hole; 13. a supporting seat; 21. a flexible mechanism; 31. a support pillar; 81. a locking plate; 82. a first locking bolt; 83. a second locking bolt; 211. an upper end cap; 212. a compression spring; 213. a support bar; 214. the base is pressed.

Detailed Description

The technical solutions for achieving the objects of the present invention are further described below by using several specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples.

Example 1

The embodiment discloses a general pressing structure of a drawing die, which is shown in the attached drawings 1-4 in the specification, and comprises a base body 1, a flexible component 2 and a supporting mechanism 3, wherein the flexible component 2 is arranged on the bottom surface of the base body 1 and can freely contract, the shape of the bottom surface of the flexible component 2 can be matched with the shape of a part forming tool, and in the embodiment, the shape of the bottom surface of the flexible component 2 is an arc surface in the attached drawing 2 in the specification; further, the supporting mechanism 3 is arranged around the base body 1 and is detachably connected with the base body; furthermore, the periphery of the base body 1 is also provided with an ear plate 11, an ear hole penetrates through the ear plate 11, and the lifting lug 4 is installed on the ear plate 11 through the ear hole.

The universal upper pressing structure profile has certain elasticity, can achieve a universal function, has the characteristic of high strength, and cannot cause potential safety hazards in the machining process; furthermore, the bottom surface shape of the flexible part is matched with the shape of a part forming tool, so that the universal pressing structure is better in adaptability and can be used for more part profiles as far as possible.

Example 2

The embodiment discloses a general pressing structure of a drawing die, which is shown in the attached drawings 1-4 in the specification, and comprises a base body 1, a flexible component 2 and a supporting mechanism 3, wherein the flexible component 2 is arranged on the bottom surface of the base body 1 and can freely contract, the shape of the bottom surface of the flexible component 2 is matched with that of a part forming tool, and in the embodiment, the shape of the bottom surface of the flexible component 2 is an arc surface in the attached drawing 2 in the specification; further, the supporting mechanism 3 is arranged around the base body 1 and is detachably connected with the base body; furthermore, the periphery of the base body 1 is also provided with an ear plate 11, an ear hole penetrates through the ear plate 11, and the lifting lug 4 is installed on the ear plate 11 through the ear hole.

With respect to the flexible member 2 further definition:

referring to the accompanying drawings 1-3 and fig. 7 in the specification, the flexible component 2 includes a plurality of flexible mechanisms 21, the flexible mechanisms 21 are arranged on the substrate 1 in an array manner, the flexible mechanisms 21 further include an upper end cap 211, a compression spring 212, a support rod 213 and a pressing base 214, the compression spring 212 is located between the upper end cap 211 and the support rod 213, and two ends of the compression spring are respectively and fixedly connected with the upper end cap 211 and the support rod 213, the other end of the support rod 213 is further provided with a fork 5, the fork 5 is provided with a pair of coaxial through holes, a pin shaft 6 is arranged in the through holes, and the support rod 213 is rotatably connected with the pressing base 214. Referring to the description and the attached drawing 5, the arc-shaped structure on the bottom surface of the flexible component 2 is formed by combining a plurality of flexible mechanisms 21 with different lengths, specifically, the arc-shaped structure is formed by combining the flexible mechanisms 21 with different lengths of the support rods 213, and the bottom surface of the flexible component 2 is matched with the shape of the forming tool of the part, so that the universal pressing structure has better adaptability and can be used for more part profiles as far as possible. Further, when the universal pressing structure is used, the pressing base 214 of the flexible mechanism 21 is in contact with the sheet metal blanks, and the pressing base 214 is rotatably connected with the supporting rod 213 through the pin shaft 6, so that the flexibility and elasticity of the universal pressing structure are further increased, and further adaptability adjustment can be performed according to the shape of the part forming tool.

Further definition of the structure of the base 1:

referring to fig. 6 of the specification, the base 1 is actually a flat plate structure, a plurality of stepped holes 12 are formed in the flat plate and penetrate through the top surface and the bottom surface of the flat plate, a plurality of flexible mechanisms 21 are respectively installed on the base 1 through the stepped holes, and the size of the stepped holes is matched with that of the flexible mechanisms 21. Specifically, as shown in fig. 5 in the specification, the stepped hole 12 is a third-level stepped hole, from the top surface to the bottom surface of the flat plate, the stepped hole is sequentially a first-level stepped hole, a second-level stepped hole and a third-level stepped hole, the aperture of the stepped hole is gradually reduced from top to bottom, that is, the aperture of the first-level stepped hole is larger than that of the second-level stepped hole, the aperture of the second-level stepped hole is larger than that of the third-level stepped hole, the upper end cap 211 in the flexible mechanism 21 is located in the first-level stepped hole, the compression spring 212 is located in the second-level stepped hole, the end of the support rod 213 connected with the compression spring 212 is located in the third-level stepped hole, and the other end extends out of the third-level stepped hole, under the effect of the third-level stepped hole, the flexible mechanism 21 is just clamped on the base 1, and is not required to. Further, in order to prevent the flexible mechanism 21 from being ejected out of the stepped hole 12, the baffle 7 is specially provided on the top of the base body 1, and the baffle 7 is connected to the base body 1 by screws.

Further definition with respect to the support structure 3:

referring to the attached drawings 1-3, 5 and 8 in the specification, the supporting mechanism 3 includes a supporting column 31, a circle of bosses are arranged on the supporting column 31 along the circumferential direction, supporting seats 13 are arranged around the base 1, supporting holes are arranged on the supporting seats 13 in a penetrating manner, the diameter of each supporting hole is smaller than that of each boss, the upper end of the supporting column 31 is located in the corresponding supporting hole, a locking part 8 is arranged at the top of the supporting column 31, and the locking part 8 is located outside the corresponding supporting hole. Because the whole flexible part 2 has elasticity, the flexible part cannot be directly placed on the ground like a rigid tool, and the supporting mechanism 3 is specially arranged around the base body 1 and used for supporting the tool during placement.

Further definition with respect to the support column 31:

referring to the specification and the attached fig. 8, the bottom of the lower end of the supporting column 31 is provided with a supporting base 9. Support the base along the axis direction, from last to outside the size enlarges gradually down, the size of upper end is the same with the size of support column, and the lower extreme size is the biggest, for whole general upward pressure structure provides a good supporting role, supports more stably, furtherly, support column 31 and support base 9 can be integrated into one piece.

Further definition of the locking member 8:

referring to fig. 1-3, 5 and 8 of the specification, the locking component 8 includes a locking plate 81, a first locking bolt 82 and a second locking bolt 83, the locking plate 81 is provided with a first locking hole and a second locking hole, respectively, the top of the upper end of the supporting column 31 is provided with a threaded hole, one end of the first locking bolt 82 penetrates through the first locking hole and extends into the threaded hole, so as to fix the locking plate 81 on the supporting column 31, further, the second locking bolt 83 is located in the second locking hole, the second locking hole is a threaded hole, and is in threaded connection with the threaded hole, and when the second locking bolt is screwed, the screw part is in contact with the supporting seat 13.

Further definition regarding the universal press-up structure:

as described with reference to fig. 1 of the specification, the universal press-up structure further includes a pad 10. In order to avoid the phenomenon that a flexible part leaves a tooling mark on the surface of a part during stretching forming, a cushion block structure is specially added for eliminating the tooling mark during forming.

Example 3

The embodiment discloses a using method of a general upper pressing structure of a drawing die, which specifically comprises the following steps:

s1, firstly, hoisting the lower die of the drawing die to the platform of the drawing machine;

s2, placing the sheet metal blank on a lower die of a drawing die, and plugging the end of the blank into a jaw of a drawing machine;

s3, placing the cushion block 10 on the sheet metal wool;

s4, loosening the locking component 8, loosening the supporting mechanism 3 in the universal pressing structure, lifting the universal pressing structure to a stretcher by using lifting equipment, and placing the universal pressing structure on a cushion block 10;

s6, the telescopic arm contracts to provide pressure for the universal pressing structure, the flexible part 2 is adaptively adjusted according to the shape of the forming tool, so that the shape of the bottom surface of the flexible part 2 is matched with that of the sheet metal blank forming tool, and after assembly is completed, the jaw clamping starts to stretch and form the sheet metal blank;

and S7, opening the telescopic arm after the sheet metal wool is stretched and formed, hanging the universal upward-pressing structure from the stretcher, screwing the locking part 8, and then partially placing the whole base body on the supporting mechanism 3.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.

Claims

1. The utility model provides a general structure of pressing from both sides of drawing type mould which characterized in that: including base member (1) and flexible component (2) and supporting mechanism (3) of setting on base member (1), flexible component (2) set up in the bottom surface of base member (1), can freely contract, and the shape of its bottom surface can be with the shape looks adaptation of shaping frock, supporting mechanism (3) set up around base member (1) and be connected with detachable between base member (1), be provided with otic placode (11) around base member (1), be provided with the earhole that is used for installing lug (4) on otic placode (11).

2. The universal upper pressing structure of the drawing die as claimed in claim 1, wherein: flexible part (2) include that a plurality of arrays set up flexible mechanism (21) on base member (1), flexible mechanism (21) include end cap (211), compression spring (212), bracing piece (213) and compress tightly base (214), compression spring (212) are located between end cap (211) and bracing piece (213) and both ends are connected with both respectively, the other end of bracing piece (213) is provided with fork ear (5), be provided with a pair of coaxial through-hole on fork ear (5), be provided with round pin axle (6) in the through-hole, bracing piece (213) are connected with compressing tightly base (214) rotation through round pin axle (6).

3. The universal upper pressing structure of the drawing die as claimed in claim 2, wherein: the base member (1) is a flat structure, is provided with a plurality of shoulder holes (12) that run through dull and stereotyped top surface and bottom surface on the flat board, and flexible mechanism (2) are installed on base member (1) through above-mentioned shoulder hole (12), the size phase-match of the size of shoulder hole (12) and flexible mechanism (2), the top of base member (1) still is provided with baffle (7).

4. The universal upper pressing structure of the drawing die as claimed in claim 1, wherein: the supporting mechanism (3) comprises a supporting column (31), a circle of boss is arranged on the supporting column (31) along the circumferential direction, supporting seats (13) are arranged on the periphery of the base body (1), supporting holes are formed in the supporting seats (13) in a penetrating mode, the aperture of each supporting hole is smaller than that of the boss, the upper end of the supporting column (31) is located in each supporting hole, a locking part (8) is arranged at the top of each supporting hole, and the locking part (8) is located outside each supporting hole.

5. The universal press-up structure for drawing dies according to claim 4, wherein: and a support base (9) is arranged at the bottom of the lower end of the support column (31).

6. The universal press-up structure for drawing dies according to claim 4, wherein: locking part (8) are including lockplate (81), first locking bolt (82) and second locking bolt (83), are provided with first locking hole and second locking hole on lockplate (81) respectively, and the upper end top of support column (31) is provided with the screw hole, and the one end of first locking bolt (82) is run through in first locking hole and the screw hole that extends to, second locking bolt (83) be located second locking hole and with second locking hole threaded connection.

7. The universal upper pressing structure of the drawing die as claimed in claim 1, wherein: the universal pressing structure further comprises a cushion block (10).

8. The use method of the universal upper pressing structure of the pull die is characterized in that: the method specifically comprises the following steps:

s3, placing the cushion block (10) on the sheet metal blank;

s4, loosening the locking component (8), loosening the supporting mechanism (3) in the universal pressing structure, lifting the universal pressing structure to a drawing machine by using lifting equipment, and placing the universal pressing structure on the cushion block (10);

s6, the telescopic arm contracts to provide pressure for the universal pressing structure, the flexible part (2) is adjusted in adaptability according to the shape of the forming tool, so that the shape of the bottom surface of the flexible part (2) is matched with that of the sheet metal blank forming tool, and after the assembly is completed, the jaw clamping starts to stretch and form the sheet metal blank;

and S7, opening the telescopic arm after the sheet metal wool is stretched and formed, hanging the universal upward-pressing structure from the stretcher, screwing the locking part (8) tightly, and then partially placing the whole base body on the supporting mechanism (3).