Linear friction welding clamp for chain ring

Abstract

The linear friction welding clamp for the chain ring comprises a vibration clamp and an upsetting clamp, the opposite faces of the vibration clamp and the upsetting clamp are each provided with a first cavity and a second cavity, and the two second cavities are located between the two first cavities. And the second cavity is communicated with the adjacent first cavity and the outside. The chain ring to be welded is contained in the second cavity, and the chain ring which is connected with the chain ring to be welded and integrally formed is contained in the first cavity, so that the chain ring can be clamped through a structure matched with the chain ring, it can be guaranteed that the chain ring to be welded does not slip in the clamping process, and the clamping stability is enhanced.

Description

Technical Field

[0001] The present application relates to the field of friction welding, and in particular to a linear friction welding fixture for chain links. Background Art

[0002] Linear friction welding is a typical solid-phase connection technology. The reciprocating workpiece reciprocates at a high frequency driven by a power source, contacts and rubs strongly with a fixed workpiece under axial pressure, generates friction heat at the friction interface, causes plastic metal flow, and forms flash. When the temperature distribution and deformation of the welding zone reach a certain level, the workpieces are aligned and top forging pressure is applied to achieve high-quality solid-phase connection through the diffusion of metal atoms on both sides. It is currently mainly used for welding and repair of aircraft engine blades.

[0003] At present, domestic cable chain production mainly relies on the straight bar bending-flash butt welding process to produce single-sided welded chain links of G100 and below. However, the process strength of single-sided welded chain links of G100 and below cannot meet the requirements of hoisting operations in high-end fields such as aerospace, power generation, and mining.

[0004] Currently, there is no equipment dedicated to linear friction welding of chain links. Due to the structural characteristics of the chain links, the clamps in existing friction welding equipment are not convenient for clamping them. Utility Model Content

[0005] The embodiment of the present application provides a linear friction welding clamp for a chain link, which fills the current domestic technical gap in linear friction welding of chain links, thereby being able to form a stable clamp for the chain link.

[0006] The embodiment of the present application provides a linear friction welding fixture for a chain link, including a vibration fixture and an upset fixture;

[0007] The opposite surfaces of the vibration fixture and the upset fixture are each provided with a first cavity and a second cavity, the two second cavities are located between the two first cavities, and the second cavities communicate with the adjacent first cavities and the outside;

[0008] The vibration fixture comprises a vibration upper fixture and a vibration lower fixture;

[0009] The upset forging fixture comprises an upper upset forging fixture and a lower upset forging fixture.

[0010] In a feasible implementation, a first groove is provided on the opposite surfaces of the vibrating upper clamp and the vibrating lower clamp, and a second groove is provided on the side of at least one of the first grooves facing the top forging clamp, and the second groove is connected to the outside world on a side facing the top forging clamp and a clamping surface, and the depth of the second groove is less than the cross-sectional diameter of the chain link.

[0011] In a feasible implementation, rubber pads are fixedly mounted at the inner ends of the first grooves, and the opposing surfaces of the two rubber pads are concave surfaces.

[0012] In a feasible implementation, a pad is fixedly installed in at least one of the first grooves.

[0013] In a feasible implementation, a first gasket is fixedly mounted on the opposite surface of the upper vibration fixture and / or the lower vibration fixture.

[0014] In a feasible implementation, the third grooves are provided on the opposite surfaces of the upper forging clamp and the lower forging clamp, and at least one of the third grooves has a fourth groove provided on the side facing the vibration clamp, and the side of the fourth groove facing the vibration clamp and the clamping surface are both connected to the outside world, and the depth of the fourth groove is less than the cross-sectional diameter of the chain link.

[0015] In a feasible implementation, a second gasket is fixedly mounted on the opposite surface of the upset upper clamp and / or the upset lower clamp.

[0016] In a feasible implementation, the vibrating upper clamp and / or the vibrating lower clamp are movably connected to the vibrating slide, the vibrating upper clamp and / or the vibrating lower clamp are connected with a power piece, the upsetting upper clamp and / or the upsetting lower clamp are movably connected to the upsetting slide, the upsetting upper clamp and / or the upsetting lower clamp are connected with a power piece, and the power piece is used to make the upsetting upper clamp and / or the upsetting lower clamp, the vibrating upper clamp and / or the vibrating lower clamp move vertically.

[0017] A linear friction welding clamp for a chain link provided in an embodiment of the present application accommodates the chain link to be welded through the second cavity, and accommodates an integrally formed chain link connected to the chain link to be welded through the first cavity, so that the chain link can be clamped by a structure matching the chain link, ensuring that the chain link to be welded does not slip during the clamping process, thereby enhancing the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a linear friction welding device for a chain link provided in one embodiment of the present application;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of a linear friction welding device for a chain link provided in one embodiment of the present application;

[0020] Figure 3 It is a structural schematic diagram of a vibration fixture of a linear friction welding fixture for a chain link provided in one embodiment of the present application;

[0021] Figure 4 It is a schematic structural diagram of an upset forging fixture of a linear friction welding fixture for a chain link provided in one embodiment of the present application.

[0022] Description of reference numerals:

[0023] 100-base; 200-column; 300-upsetting column; 400-vibration slide; 500-vibration fixture; 600-vibration cylinder; 700-upsetting slide; 800-upsetting fixture; 900-upsetting cylinder;

[0024] 110-vibration-damping support member; 111-vibration-damping pad; 112-support member;

[0025] 501-vibration upper fixture; 502-vibration lower fixture; 503-rubber pad; 504-first gasket; 505-pad;

[0026] 801-upper forging fixture; 802-lower forging fixture; 803-second gasket;

[0027] 901-rough forging cylinder; 902-fine forging cylinder. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0029] Figure 1 is a schematic structural diagram of a linear friction welding device for a chain link provided in one embodiment of the present application. Figure 2 Schematic diagram of the cross-sectional structure of a linear friction welding device for chain links provided in one embodiment of the present application. Figure 1 and Figure 2 As shown, the embodiment of the present application provides a linear friction welding device for a chain link, comprising a base 100, a column 200 is fixedly installed at one end of the top surface of the base 100, and an upsetting column 300 is fixedly installed at the other end of the top surface of the base 100;

[0030] A vibration slide 400 is fixedly installed on one side of the column 200 facing the upset column 300, and a vibration fixture 500 is movably installed on the vibration slide 400. The vibration fixture 500 is connected to the base 100 through a vibration cylinder 600, and the vibration cylinder 600 is used to make the vibration fixture 500 move along the vibration slide 400 perpendicular to the top surface of the base 100;

[0031] A top forging slide 700 is fixedly installed on the top surface of the base 100, and the top forging slide 700 is located between the column 200 and the top forging column 300. A top forging fixture 800 is movably installed on the top forging slide 700, and the top forging fixture 800 is connected to the top forging column 300 through a top forging cylinder 900. The top forging cylinder 900 is used to make the top forging fixture 800 move along the top forging slide 700 perpendicular to the vibration fixture 500.

[0032] During the welding process, a welding load of up to tens of tons will be generated and act on the base 100, which may easily cause the base 100 to deform. In addition, the high-frequency vibration of the vibration slide 400 during linear friction welding will cause the base 100 to vibrate. Long-term vibration may cause the equipment processing accuracy to decrease. Therefore, the rigidity of the base 100 should be increased as much as possible to improve the anti-deformation ability.

[0033] It should be noted that the base 100 is cast as a whole, which can minimize the stiffness loss caused by mechanical connection. The cast steel material ZG35 with a high elastic modulus is selected. It is designed as a cavity structure with openings at both ends. Reinforcing ribs are arranged on the inner wall of the base 100, which can ensure stiffness while avoiding the problem of heavy weight.

[0034] In some examples, based on the three-dimensional model, ANSYS numerical simulation can be used to analyze the deformation of the base 100, and further optimization can be performed to ensure that the deformation of the base 100 is as small as possible or even does not deform.

[0035] For the same reason, the vibration slide 400 and the top forging slide 700 are both made of cast steel material ZG35CrMo with a high elastic modulus.

[0036] In the above embodiment, the user places two chain links to be welded into the vibration fixture 500 and the top forging fixture 800 respectively, so that the welding surfaces of the two chain links to be welded are opposite and clamped, and then the top forging fixture 800 is sent to the vibration fixture 500 by the top forging cylinder 900 to make the welding surfaces of the two chain links to be welded contact with each other, and then the vibration fixture 500 is vibrated up and down at a high frequency by the vibration cylinder 600, so that the welding surfaces of the two chain links to be welded produce plastic flow, and then the welding surfaces of the two chain links to be welded are aligned by the vibration cylinder 600, and finally pressure is applied by the top forging cylinder 900, so that the two chain links to be welded are welded together, so that high-performance and high-quality welds comparable to forged structures can be obtained, thereby obtaining chain links with higher international quality standards, and the welding process is free of smoke and flash, is more green and environmentally friendly, and is also conducive to improving the quality of the working environment.

[0037] Figure 3 Schematic diagram of the structure of the vibration fixture of the linear friction welding fixture for chain links provided in one embodiment of the present application, referring to Figure 3As shown, in some examples, a first cavity and a second cavity are provided on the opposite surfaces of the vibration fixture 500 and the upset fixture 800, two second cavities are located between two first cavities, and the first cavity connects the adjacent second cavities with the outside.

[0038] The vibration fixture 500 includes a vibration upper fixture 501 and a vibration lower fixture 502. In some examples, the vibration upper fixture 501 and the vibration lower fixture 502 are both movably connected to the vibration slide 400. In other examples, one of the vibration upper fixture 501 and the vibration lower fixture 502 may be movably connected to the vibration slide 400, and the other may be fixedly connected to the vibration slide 400. Exemplarily, the vibration upper fixture 501 and / or the vibration lower fixture 502 are connected to the vibration slide 400 via a dovetail static pressure guide rail.

[0039] It should be noted that the vibrating upper clamp 501 and / or the vibrating lower clamp 502 are connected to a power part. In some examples, the power part is an oil cylinder, which is not shown in the figure. The oil cylinder is used to drive the vibrating upper clamp 501 and / or the vibrating lower clamp 502 to move vertically, so that the chain link to be welded can be put in or taken out when the vibrating upper clamp 501 and the vibrating lower clamp 502 are separated, and the chain link to be welded can be clamped and fixed when the vibrating upper clamp 501 and the vibrating lower clamp 502 are close to each other.

[0040] A first groove is provided on the opposite surfaces of the vibrating upper clamp 501 and the vibrating lower clamp 502, and the two first grooves can be combined into an annular cavity, that is, a first cavity. In other examples, they can also be combined into a rectangular cavity to accommodate the chain ring cast in one piece. The present application does not impose any restrictions on this. At least one first groove has two second grooves on the side facing the top forging clamp 800, and the side of the second groove facing the top forging clamp 800 and the clamping surface are connected to the outside world. The two second grooves corresponding to each first groove are combined into a semi-annular cavity, that is, a second cavity. The depth of the second groove is less than the cross-sectional diameter of the chain ring to be welded, and the width is greater than the cross-sectional diameter of the chain ring to be welded. In other examples, a second groove can also be provided, and the width is greater than the overall width of the chain ring to be welded, so that after the chain ring to be welded is placed therein, it protrudes from the opposite surfaces of the vibrating upper clamp 501 and the vibrating lower clamp 502, so that after the vibrating upper clamp 501 and the vibrating lower clamp 502 are brought close, they can contact the clamping surface of the chain ring to be welded.

[0041] The inner ends of the first grooves are fixedly mounted with rubber pads 503 made of hard rubber. The opposite surfaces of the two rubber pads 503 are concave surfaces to fit the arc surface of the integrally formed chain ring, thereby avoiding damage to the surface of the integrally formed chain ring while clamping and fixing the chain ring.

[0042] The first gasket 504 is fixedly installed on the opposite surfaces of the vibration upper clamp 501 and / or the vibration lower clamp 502, and the first gasket 504 avoids the first groove and the second groove. In other examples, the first groove and the second groove can also be opened on the first gasket 504. The material of the first gasket 504 is 45# steel, so that after the vibration upper clamp 501 and the vibration lower clamp 502 are brought close to each other, they can fit more closely to the clamping surface of the chain link to be welded, and can withstand the gradually increasing temperature of the chain link to be welded during the friction welding process.

[0043] A pad 505 is fixedly installed in the first groove, one end of the pad 505 is fixedly connected to the first groove, and the other end does not contact the first groove. The material can be 45# steel. After the one-piece chain link is placed in the first groove at the other end of the pad 505, it is moved toward one end of the pad 505 until the pad 505 is located in the one-piece chain link. At this time, the pad 505 contacts the outer peripheral arc surface of the chain link to be welded to form a support for the chain link to be welded, thereby preventing the chain link to be welded from shrinking into the first groove after being subjected to force.

[0044] It is easy to understand that the chain links are interlocked to form a chain. Before welding two semi-annular chain links to be welded, each chain link to be welded needs to be covered with an integrally cast chain link. Each chain link to be welded is a U-shaped structure or a C-shaped structure. Each chain link to be welded includes two surfaces to be welded. The integrally cast chain link is then placed in the first cavity, and the semi-annular chain link to be welded connected to it is placed in the second cavity. The openings of the two second cavities are opposite to each other, and the surfaces to be welded of the chain links to be welded protrude out of the second cavity. After welding, a structure with three chain links connected to each other can be formed.

[0045] Figure 4 Schematic diagram of the structure of the top forging fixture of the linear friction welding fixture for chain links provided in one embodiment of the present application, referring to Figure 4 As shown, the upsetting fixture 800 includes an upsetting upper fixture 801 and an upsetting lower fixture 802, both of which are movably connected to the upsetting slide 700. In other examples, one of the upsetting upper fixture 801 and the upsetting lower fixture 802 may be movably connected to the upsetting slide 700, and the other may be fixedly connected to the upsetting slide. Exemplarily, the upsetting upper fixture 801 and / or the upsetting lower fixture 802 are connected to the upsetting slide 700 via a dovetail static pressure guide rail.

[0046] It should be noted that the upper forging clamp 801 and / or the lower forging clamp 802 are connected to an oil cylinder, which is not shown in the figure, so that the upper forging clamp 801 and / or the lower forging clamp 802 can be driven by the oil cylinder to move vertically, so that the chain link to be welded can be put in or taken out when the upper forging clamp 801 and the lower forging clamp 802 are separated, and the chain link to be welded can be clamped and fixed when the upper forging clamp 801 and the lower forging clamp 802 are brought close to each other.

[0047] A third groove is provided on the opposite surfaces of the upper forging clamp 801 and the lower forging clamp 802, and the two third grooves can be combined into an annular cavity. In other examples, they can also be combined into a rectangular cavity, i.e., a first cavity, for accommodating the integrally cast chain ring. The present application does not impose any restrictions on this. At least one third groove has two fourth grooves provided on the side facing the vibration clamp 500. The side of the fourth groove facing the vibration clamp 500 and the clamping surface are both connected to the outside world. The two fourth grooves corresponding to each third groove are combined into a semi-annular cavity, i.e., a second cavity. The depth of the fourth groove is less than the cross-sectional diameter of the chain ring to be welded, and the width is greater than the cross-sectional diameter of the chain ring to be welded. In other examples, a fourth groove can also be provided, and the width is greater than the overall width of the chain ring to be welded, so that after the chain ring to be welded is placed therein, it protrudes from the opposite surfaces of the upper forging clamp 801 and the lower forging clamp 802, so that after the upper forging clamp 801 and the lower forging clamp 802 are brought close together, they can contact the clamping surface of the chain ring to be welded.

[0048] The second gasket 803 is fixedly installed on the opposite surface of the top forging upper clamp 801 and / or the top forging lower clamp 802, and the second gasket 803 avoids the third groove and the fourth groove. In other examples, the third groove and the fourth groove can also be opened on the second gasket 803. The material of the second gasket 803 is 45# steel, so that after the top forging upper clamp 801 and the top forging lower clamp 802 are brought close to each other, they can fit more closely to the clamping surface of the chain link to be welded, and can withstand the gradually increasing temperature of the chain link to be welded during the friction welding process.

[0049] It is easy to understand that another rubber pad and another pad block can also be set in the third groove and the fourth groove, so that the other rubber pad forms a soft contact with the chain links to be welded and the integrally formed chain links in the top forging fixture 800, thereby avoiding damage to the chain link surface, and the other pad block forms a support for the chain links to be welded and the integrally formed chain links in the top forging fixture 800.

[0050] It should be noted that the first cavity should be connected to the outside world, so that when welding two multi-link chains, the excess links can be led to the outside world through the first cavity without affecting the placement of the links to be welded.

[0051] In the above embodiment, by clamping with a structure matching the chain link to be welded and the chain link connected thereto, it is possible to ensure that the chain link to be welded does not slip during the clamping process, thereby enhancing the clamping stability.

[0052] In some examples, the top forging cylinder 900 includes a rough forging cylinder 901 and a fine forging cylinder 902 , the rough forging cylinder 901 and the fine forging cylinder 902 are fixedly connected, and the stroke of the rough forging cylinder 901 is greater than the stroke of the fine forging cylinder 902 .

[0053] For example, the stroke of the rough forging cylinder 901 may be 900-1500 mm, and the stroke of the fine forging cylinder 902 may be 30-70 mm.

[0054] In the above embodiment, the rough section oil cylinder 901 is used to realize the large-scale movement of the upsetting fixture 800, and the fine forging oil cylinder 902 is used to realize the small-scale movement of the upsetting fixture 800, which is conducive to more accurate control of the shortening amount of the chain link to be welded during the upsetting process.

[0055] It is easy to understand that in some examples, displacement sensors and the like can be used to achieve intelligent and precise control of the shortening amount.

[0056] In some examples, continue to refer to Figure 1 As shown, the front and rear sides of the base 100 are respectively fixedly mounted with vibration-damping support members 110 .

[0057] In the above embodiment, the vibration caused by the operation of the vibration cylinder 600 and the upset cylinder 900 is reduced by the vibration-damping support member 110, which is beneficial to improving the overall processing accuracy of the equipment.

[0058] In some examples, the vibration-absorbing support member 110 includes a vibration-absorbing pad 111 and a support member 112 , wherein the vibration-absorbing pad 111 is located at the top end of the support member 112 , and the support member 112 is perpendicular to the extension direction of the bottom surface of the base 100 .

[0059] It should be noted that a row of vibration-damping support members 110 are respectively arranged on the front and rear sides of the base 100, and the vibration-damping support members 110 located below the columns 200 and the top forging columns 300 are of a three-piece structure, that is, a vibration-damping support member 110 is composed of three support members 112 and three shock-absorbing pads 111. In some examples, the three support members 112 are distributed in an equilateral triangle, and the vibration-damping support member 110 located in the middle can adopt a single-piece structure, that is, it is composed of a support member 112 and a shock-absorbing pad 111.

[0060] It is easy to understand that the vibration at the column 200 and the top forging column 300 is relatively large, and the probability of deformation at the corresponding position of the base 100 is also relatively high. The vibration reduction support 110 of the triple structure can increase the maximum load of the vibration reduction support 110 at this location, and the load is evenly distributed to each shock-absorbing pad 111, so the support stability is higher. The triple structure is used in conjunction with the single structure, which increases the number of support points and meets the demand for vibration reduction support without increasing the support length, which is more economical and applicable.

[0061] The vibration slide 400 is a vibration component of the linear welding equipment, and the vibration fixture 500 is installed on the surface of the vibration slide 400. During the welding process, the vibration slide 400 performs high-frequency vibration with the vibration fixture 500. In addition, it must withstand the upsetting force of up to tens of tons applied by the upsetting cylinder 900. Therefore, ensuring that the vibration slide 400 does not deform is of paramount importance. However, if the rigidity of the vibration slide 400 is ensured by increasing the wall thickness, the weight of the vibration slide 400 will be too large, so that the no-load high-frequency vibration of the vibration slide 400 consumes most of the energy of the system, and cannot provide a sufficiently large welding force during actual friction welding, which ultimately leads to poor welding quality.

[0062] In some examples, the vibration slide table 400 is a dovetail type hydrostatic guide.

[0063] It is easy to understand that the dovetail type hydrostatic guide rail has a strong load capacity and a small running resistance, and is suitable for meeting the load requirements of high-frequency vibration.

[0064] Exemplarily, the vibration slide table 400 is integrally cast to minimize the stiffness loss caused by mechanical connection.

[0065] The upsetting slide 700 is used to realize the upsetting movement during the linear friction welding process. The upsetting fixture 800 is installed on the upper surface of the upsetting slide 700. The upsetting cylinder 900 drives the upsetting slide 700 to perform linear motion. During the upsetting process, tens of tons of horizontal upsetting force and vertical friction force generated at the welding surface will act on the upsetting slide 700, especially the front end of the upsetting slide 700.

[0066] In some examples, the upset slide 700 is a plurality of I-shaped guide rails staggered in height, and the movable parts of the I-shaped guide rails are fixedly connected to the bottom surface of the upset fixture.

[0067] In the above embodiment, the multiple I-shaped guide rails arranged in a staggered manner can increase the stability of the upsetting slide 700 in all directions and meet the load requirements of upsetting.

[0068] Exemplarily, the I-shaped guide rail is formed by integral casting.

[0069] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0070] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A linear friction welding fixture for chain links, characterized in that: It includes a vibration fixture (500) and an upset forging fixture (800); A first cavity and a second cavity are disposed on the opposite surfaces of the vibration fixture (500) and the upset forging fixture (800), the two second cavities are located between the two first cavities, and the second cavities communicate with adjacent first cavities and the outside world; The vibration fixture (500) comprises a vibration upper fixture (501) and a vibration lower fixture (502); The upset forging fixture (800) comprises an upset forging upper fixture (801) and an upset forging lower fixture (802).

2. The linear friction welding fixture for chain links according to claim 1, characterized in that: The first grooves are formed on the opposing surfaces of the upper vibration clamp (501) and the lower vibration clamp (502), and at least one of the first grooves has a second groove formed on a side facing the upsetting clamp (800), and the side of the second groove facing the upsetting clamp (800) and the clamping surface are both connected to the outside, and the depth of the second groove is less than the cross-sectional diameter of the chain link.

3. The linear friction welding fixture for chain links according to claim 2, characterized in that: The inner ends of the first grooves are fixedly mounted with rubber pads (503), and the opposing surfaces of the two rubber pads (503) are concave surfaces.

4. The linear friction welding fixture for chain links according to claim 2, characterized in that: A cushion block (505) is fixedly installed in at least one of the first grooves.

5. The linear friction welding fixture for chain links according to any one of claims 1 to 4, characterized in that: A first gasket (504) is fixedly mounted on the opposite surface of the upper vibration fixture (501) and / or the lower vibration fixture (502).

6. The linear friction welding fixture for chain links according to any one of claims 1 to 4, characterized in that: The opposing surfaces of the upper forging clamp (801) and the lower forging clamp (802) are both provided with a third groove, and at least one of the third grooves has a fourth groove on a side facing the vibration clamp (500), and a side of the fourth groove facing the vibration clamp (500) and a clamping surface are both connected to the outside, and the depth of the fourth groove is less than the cross-sectional diameter of the chain link.

7. The linear friction welding jig for chain links according to claim 6, characterized in that: A second gasket (803) is fixedly mounted on the opposite surface of the upset forging upper clamp (801) and / or the upset forging lower clamp (802).

8. The linear friction welding fixture for chain links according to any one of claims 1 to 4, characterized in that: The vibrating upper clamp (501) and / or the vibrating lower clamp (502) are movably connected to the vibrating slide, and the vibrating upper clamp (501) and / or the vibrating lower clamp (502) are connected to a power piece. The upsetting upper clamp (801) and / or the upsetting lower clamp (802) are movably connected to the upsetting slide, and the upsetting upper clamp (801) and / or the upsetting lower clamp (802) are connected to a power piece, and the power piece is used to enable the upsetting upper clamp (801) and / or the upsetting lower clamp (802), the vibrating upper clamp (501) and / or the vibrating lower clamp (502) to move vertically.

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