CN114798815A - Part sizing die - Google Patents

Abstract

The invention discloses a part sizing die which comprises a lower die, wherein the lower die is arranged on a fixed seat and is provided with a drainage part; the upper die is arranged on the top pressing machine and provided with a water overflow part, the upper die corresponds to the lower die up and down, and a part cavity is formed at the bottom end of the upper die and the top end of the lower die; the left die is arranged on a left sliding block of the press, and one side of the left die close to the part cavity is matched with the part cavity; and the right die is arranged on the right sliding block of the press, one side of the right die, which is close to the part cavity, is matched with the part cavity, and the right die is communicated with a water inlet part. The part is extruded by the upper die and the lower die, the part is sealed by the left die and the right die, so that the inside of the part is a sealed space, high-pressure liquid or high-pressure water is filled into the part through the water inlet part on the right die after two ends of the part are sealed, and the part is corrected by the combined action of the pressure of the high-pressure liquid or the high-pressure water on the inside of the part from inside to outside and the pressure of the upper die and the lower die on the outer surface of the part from outside to inside.

Description

A part shape correcting mold

technical field

The invention belongs to the technical field of shape correction of metal hollow components, in particular to a shape correction mold for parts.

Background technique

With the rapid development of aerospace, the demand for high-performance lightweight integral hollow components is increasing. However, due to the complex geometric features of thin-walled special-shaped components, the overall hollow component is difficult to manufacture, complicated in process, often produces serious machining deformation, and is difficult to guarantee the manufacturing accuracy. Therefore, it is usually necessary to arrange a special calibration process.

In engineering, two methods of process compensation and deformation correction are generally used to improve the forming accuracy of components. Process compensation is to apply a compensation amount to the mold in the opposite direction of the springback deformation in advance, so that the shape of the workpiece after springback just matches the design shape. However, the compensation control method is mainly used to fully understand the material properties and the situation of simple workpieces. For new materials such as high-strength plates and aluminum alloy plates, or when the shape of the workpiece changes, the compensation data needs to be re-accumulated, and for complex structural parts, The deformation in the forming process is irregular, so it is impossible to correct the forming shape through compensation, so as to meet the requirements of improving the shape accuracy. Deformation correction refers to a process method that restores the size and shape of deformed parts or blanks to the design accuracy requirements through the action of external loads or energy input without removing or adding materials. In actual industrial production, shape correction is an effective method to improve the forming accuracy of components.

According to different working principles and different forms of applied loads, traditional calibration methods are mainly divided into mechanical calibration, heating calibration and cold working calibration. These calibration methods inevitably introduce surface tensile stress while calibrating the workpiece, which seriously affects the service performance of the workpiece. Therefore, there is an urgent need to design a part shape correction mold to solve the problems existing in the prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a part shape correction mold to solve the above problems and achieve the purpose of improving the precision of the part shape correction and the service performance of the part.

In order to realize the above-mentioned purpose, the present invention provides the following scheme: a kind of part shape correction mold, including

a lower mold, the lower mold is installed on the fixed seat, and the lower mold is provided with a drainage part;

Upper mold, the upper mold is installed on the top press, the upper mold is provided with an overflow part, the upper mold and the lower mold correspond up and down, and the bottom end of the upper mold and the top end of the lower mold form a part cavity ;

a left mold, the left mold is installed on the left slider of the press, and the side of the left mold close to the part cavity is adapted to the part cavity;

The right die is installed on the right sliding block of the press, the side of the right die close to the part cavity is adapted to the part cavity, and the right die communicates with a water inlet.

Preferably, the lower mold includes a lower mold base, the top of the lower mold base is fixedly connected with the bottom end of the lower mold, the top of the lower mold is provided with a lower groove, and the lower groove is connected to the bottom of the upper mold. The end forms the part cavity, and the drainage part is opened on the lower groove.

Preferably, the upper die includes an upper die base, the bottom end of the upper die base is fixedly connected with the top end of the upper die, and the bottom end of the upper die is provided with an upper groove, and the upper groove is connected to the lower concave. The groove forms the part cavity, and the overflow portion is opened on the upper groove.

Preferably, the left die includes a left die, a left punch is fixedly connected to the middle of one side of the left die away from the left slider of the press, and the left die is far from the left slider of the press. A number of limit posts are fixedly connected on one side, and the left punch is adapted to the part cavity.

Preferably, the right die includes a right die, a right punch is fixedly connected to the middle of the side of the right die away from the right slider of the press, and the right die is far from the right slider of the press. A plurality of the limiting posts are fixedly connected on one side, and a water inlet hole is formed on the right punch, and the water inlet hole communicates with the water inlet portion.

Preferably, the drainage portion includes a plurality of drainage holes, the drainage holes are symmetrically opened at both ends of the bottom of the lower groove, and a drainage channel is connected to the bottom end of the drainage hole, and the drainage channel communicates with the outside world.

Preferably, the overflow part includes two overflow holes, the two overflow holes are symmetrically opened at both ends of the top of the upper groove, the top of the overflow holes is connected with an overflow channel, and the overflow channel communicates with the outside world .

Preferably, the water inlet portion includes a water inlet rod, one end of the water inlet rod is fixedly connected to the right punch, the other end of the water inlet rod is provided with a low pressure hole and a high pressure hole, and the water inlet rod is provided with a There is a hollow channel, and the low-pressure hole and the high-pressure hole communicate with the water inlet hole through the hollow channel.

Preferably, both ends of the top of the lower die base are fixedly connected with lower V-shaped guide parts, the bottoms of the left die and the right die are fixedly connected with upper V-shaped guide parts, and the lower V-shaped guide parts are fixedly connected. The part is adapted to the upper V-shaped guide part.

The present invention has the following technical effects:

The die of the invention is convenient for the upper die and the lower die to extrude the outer surface of the part, and at the same time, the left die and the right die are used to seal the two ends of the part, so that the interior of the part becomes a closed space, and after the two ends of the part are sealed, Fill the part with high-pressure liquid or high-pressure water through the water inlet on the right die, and use the high-pressure liquid or high-pressure water to combine the pressure from the inside to the outside of the part and the pressure from the outside to the inside of the upper die and the lower die on the outer surface of the part. function to correct the shape of the parts.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is another schematic diagram of the overall structure of the present invention;

3 is a schematic diagram of the structure of the internal parts cavity of the present invention;

4 is a schematic structural diagram of the right die of the present invention;

Fig. 5 is the axonometric view of the lower die and the upper die of the present invention;

Fig. 6 is another axonometric view of the lower die and the upper die clamping according to the present invention;

7 is a schematic diagram of a lower die base of the present invention;

Fig. 8 is the schematic diagram of the upper die base of the present invention;

FIG. 9 is a schematic diagram of the water inlet rod of the present invention.

Among them, 1. Lower slider; 2. Lower die base; 3. Lower die; 4. Lower groove; 5. Upper sliding block; 6. Upper die base; 7. Upper die; 8. Upper groove; 9. Left slider; 10. Left die; 11. Left punch; 12. Limit post; 13. Right slider; 14. Right die; 15. Inlet rod; 16. Right punch; 17. Inlet hole; 18, lower V-shaped guide part; 19, upper V-shaped guide part; 20, low pressure hole; 21, high pressure hole; 22, drainage hole; 23, drainage channel; 24, overflow hole; 25, overflow channel; 26. The first lower accommodating groove; 27, the first upper accommodating groove; 28, the limit block; 29, the second lower accommodating groove; 30, the second upper accommodating groove; 31, the guide post; 32, the T-shaped groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1-9, the present invention discloses a part shape correction mold, including

Lower mold, the lower mold is installed on the fixed seat, and the lower mold is provided with a drainage part;

The upper die is installed on the top press, the upper die is provided with an overflow part, the upper die and the lower die correspond up and down, and the bottom end of the upper die and the top end of the lower die form a part cavity;

Left mold, the left mold is installed on the left slider of the press, and the side of the left mold close to the part cavity is adapted to the part cavity;

Right die, the right die is installed on the right slider of the press, the side of the right die close to the part cavity is matched with the part cavity, and the right die is connected with a water inlet.

The upper die and the lower die are set to extrude the outer surface of the part, and at the same time, the left die and the right die are used to seal both ends of the part, so that the interior of the part becomes a closed space, and the two ends of the part are sealed before passing through the right die. The upper water inlet is filled with high-pressure liquid or high-pressure water into the part, and the combined action of the high-pressure liquid or high-pressure water on the inside of the part from the inside to the outside and the pressure from the outside to the inside of the upper die and the lower die on the outer surface of the part, to Parts are calibrated.

To further optimize the solution, the lower die includes a lower die base 2, the top of the lower die base 2 is fixedly connected with the bottom end of the lower die 3, the top of the lower die 3 is provided with a lower groove 4, and the lower groove 4 forms a part with the bottom end of the upper die cavity, and the drainage part is provided on the lower groove 4 .

The shape of the part cavity can be changed according to the shape of the part that actually needs to be corrected.

Further, a lower sliding block 1 is detachably installed at the bottom end of the lower die base 2, and the lower sliding block 1 is detachably installed on the fixed seat, and two first lower accommodating grooves 26 parallel to each other are opened in the middle of the bottom end of the lower pressing die 3. , the middle of the bottom end of the lower die base 2 is provided with two second lower accommodating grooves 29 parallel to each other, a number of limit blocks 28 are fixedly connected in the second lower accommodating grooves 29, and the top of the limit blocks 28 is snapped into the first lower accommodating groove 29. In the groove 26 , the lower die 3 is positioned to prevent the lower die 3 from sliding relative to the lower die base 2 .

Furthermore, a guide post 31 is fixedly connected to the middle of the top of the lower slide block 1 .

To further optimize the scheme, the upper mold includes an upper mold base 6, the bottom end of the upper mold base 6 is fixedly connected with the top end of the upper die 7, the bottom end of the upper die 7 is provided with an upper groove 8, and the upper groove 8 and the lower groove 4 are formed. The part cavity, the overflow part is set on the upper groove 8 .

Further, an upper sliding block 5 is detachably installed on the top of the upper die base 6, the upper sliding block 5 is the upper sliding block of the press, and two first upper accommodating grooves 27 parallel to each other are provided in the middle of the top of the upper die 7. There are two second upper accommodating grooves 30 parallel to each other in the middle of the bottom end of the base 6 , and a plurality of limit blocks 28 are fixedly connected in the second upper accommodating grooves 30 , and the bottom end of the limit blocks 28 is snapped into the first upper accommodating groove 27 Inside, the upper die 7 is positioned to prevent relative sliding between the upper die 7 and the upper die base 6 .

To further optimize the solution, the left die includes a left die 10, a left punch 11 is fixedly connected to the middle of one side of the left die 10 away from the left slider of the press, and a side of the left die 10 that is away from the left slider of the press is fixedly connected. Several limit posts 12 and the left punch 11 are adapted to the parts cavity.

A left slider 9 is detachably installed on the side of the left die 10 close to the left slider of the press, and the left slider 9 is detachably installed on the left slider of the press.

To further optimize the solution, the right die includes a right die 14, a right punch 16 is fixedly connected in the middle of the side of the right die 14 away from the right slider of the press, and a side of the right die 14 away from the right slider of the press is fixedly connected with a A plurality of limit posts 12 and the right punch 16 are provided with water inlet holes 17 , and the water inlet holes 17 are communicated with the water inlet portion.

A right sliding block 13 is detachably installed on the side of the right die 14 close to the right sliding block of the press, and the right sliding block 13 is detachably installed on the right sliding block of the press.

In this embodiment, the number of limit posts 12 on the left punch 11 and the right punch 16 are both four, which are located on the four corners of the left punch 11 and the right punch 16 respectively, and can also be limited according to actual needs. The number of bit columns 12 is appropriately increased or decreased.

Further, an aluminum backing plate is fixed between the left die 10 and the left punch 11, and between the right die 14 and the right punch 16, and the aluminum backing plate prevents the left die 10 and the right die 14 from opposing the left punch. 11 and right punch 16 cause crush damage.

The limit post 12 acts as a limit for the left die 10 and the right die 14. When the left die 10 and the right die 14 move in place, the left die 10 and the right die 14 are prevented from continuing to move, preventing the left die 10 from moving. and the right die 14 to cause extrusion damage to the part.

The top end of the lower slider 1, the bottom end of the upper slider 5, the right side of the left slider 9, and the left side of the right slider 13 are provided with a number of T-shaped grooves 32, and the locking bolts in the T-shaped grooves 32 The lower die base 2 , the upper die base 6 , the left die 10 , and the right die 14 are fixedly mounted on the lower slide 1 , the upper slide 5 , the left slide 9 , and the right slide 13 .

In a further optimized solution, the drainage portion includes a plurality of drainage holes 22, which are symmetrically opened at both ends of the bottom of the lower groove 4, and the bottom end of the drainage holes 22 is connected with a drainage channel 23, which communicates with the outside world.

To further optimize the solution, the overflow part includes two overflow holes 24, the two overflow holes 24 are symmetrically opened at both ends of the top of the upper groove 8, and the top of the overflow hole 24 is connected with an overflow channel 25, and the overflow channel 25 communicates with the outside world.

To further optimize the solution, the water inlet part includes a water inlet rod 15, one end of the water inlet rod 15 is fixedly connected with the right punch 16, the other end of the water inlet rod 15 is provided with a low pressure hole 20 and a high pressure hole 21, and the water inlet rod 15 is provided with a hollow inside The low pressure hole 20 and the high pressure hole 21 communicate with the water inlet hole 17 through the hollow channel.

The solution is further optimized. Both ends of the top of the lower die base 2 are fixedly connected with a lower V-shaped guide member 18 , and the bottoms of the left die 10 and the right die 14 are fixedly connected with an upper V-shaped guide member 19 and a lower V-shaped guide member 18 . Fits with the upper V-shaped guide member 19 .

The working process of this embodiment is as follows:

First put the parts that need to be calibrated into the lower groove 4, then start the top press to drive the upper die 7 to move down until the upper die 7 and the lower die 3 are closed, and then start to apply pressure to the parts. The outer surface is extruded. When the pressure reaches the set value, the left slider of the press and the right slider of the press are controlled to extend at the same time, driving the left die 10 and the right die 14 to approach the part. When the left punch 11 and the When the end face of the right punch 16 crosses the drainage holes 22 at both ends of the lower groove 4 and does not reach the overflow holes 24 at both ends of the upper groove 8, it begins to inject low-pressure water into the part through the low-pressure holes 20 on the water inlet rod 15, and inject low-pressure water. When water overflows from the overflow channel 25 during the water flow, it means that the interior of the part is filled with water. At this time, the left die 10 and the right die 14 are controlled to continue to move forward, so that the end faces of the left punch 11 and the right punch 16 cross the upper The overflow holes 24 at both ends of the groove 8 form a closed space inside the part, and then high-pressure water is injected into the part through the high-pressure hole 21. After the pressure inside the part reaches a predetermined value, the pressure is maintained. After the pressure is maintained, the left die 10 is controlled. When the left punch 11 and the end face of the right punch 16 retreat to cross the drainage hole 22, the water inside the part is discharged to the outside through the drainage hole 22 and the drainage channel 23. At this time, the calibration of the part is completed. process.

In the present invention, the water discharged after the shape calibration is completed can be collected into the external container, and the shape calibration of the next part can be continued by re-pressurizing the water in the container, and the water can be recycled, which can save water resources and circulate water. Pressurization is in the prior art and will not be repeated here.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (9)

1. a part shape correction mould is characterized in that, comprising a lower mold, the lower mold is installed on the fixed seat, and the lower mold is provided with a drainage part; Upper mold, the upper mold is installed on the top press, the upper mold is provided with an overflow part, the upper mold and the lower mold correspond up and down, and the bottom end of the upper mold and the top end of the lower mold form a part cavity ; a left mold, the left mold is installed on the left slider of the press, and the side of the left mold close to the part cavity is adapted to the part cavity; The right die is installed on the right sliding block of the press, the side of the right die close to the part cavity is adapted to the part cavity, and the right die communicates with a water inlet. 2. A part shape correction mold according to claim 1, characterized in that the lower mold comprises a lower mold base (2), and the top of the lower mold base (2) is fixedly connected with a lower die (3) At the bottom end, a lower groove (4) is opened at the top of the lower die (3), the lower groove (4) and the bottom end of the upper die form the part cavity, and the drainage part is opened in the on the lower groove (4). 3. A part shape correction mold according to claim 2, wherein the upper mold comprises an upper mold base (6), and the bottom end of the upper mold base (6) is fixedly connected with an upper die (7). ) top, the bottom end of the upper die (7) is provided with an upper groove (8), the upper groove (8) and the lower groove (4) form the part cavity, and the overflow portion Open on the upper groove (8). 4. A part shape correcting die according to claim 3, characterized in that the left die comprises a left die (10), and the left die (10) is away from one of the left sliders of the press. A left punch (11) is fixedly connected to the middle of the side, a plurality of limit posts (12) are fixedly connected to the side of the left die (10) away from the left slider of the press, and the left punch (11) Fits with the part cavity. 5. A part shape correcting die according to claim 4, characterized in that the right die comprises a right pressing die (14), and the right pressing die (14) is away from a part of the right sliding block of the pressing machine. A right punch (16) is fixedly connected to the middle of the side, and a plurality of limit posts (12) are fixedly connected to the side of the right die (14) away from the right sliding block of the press, and the right punch (14). 16) A water inlet hole (17) is opened on it, and the water inlet hole (17) is communicated with the water inlet part. 6. A part shape correcting mold according to claim 2, characterized in that the drainage part comprises a plurality of drainage holes (22), and the drainage holes (22) are symmetrically opened in the lower groove (4). ) at both ends of the bottom, the bottom end of the drainage hole (22) is communicated with a drainage channel (23), and the drainage channel (23) communicates with the outside world. 7. A part shape correcting mold according to claim 3, characterized in that the overflow part comprises two overflow holes (24), and the two overflow holes (24) are symmetrically opened in the upper groove (8) Both ends of the top, the top of the overflow hole (24) is communicated with an overflow channel (25), and the overflow channel (25) communicates with the outside world. 8. A part shape correcting die according to claim 5, characterized in that the water inlet part comprises a water inlet rod (15), and one end of the water inlet rod (15) is connected to the right punch (16). ) fixed connection, the other end of the water inlet rod (15) is provided with a low pressure hole (20) and a high pressure hole (21), a hollow channel is opened inside the water inlet rod (15), the low pressure hole (20), The high pressure hole (21) communicates with the water inlet hole (17) through the hollow channel. 9. A part shape correcting die according to claim 5, characterized in that, both ends of the top of the lower die base (2) are fixedly connected with a lower V-shaped guide member (18), and the left die (2). 10) An upper V-shaped guide member (19) is fixedly connected to the bottom of the right die (14), and the lower V-shaped guide member (18) is adapted to the upper V-shaped guide member (19) .

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