Linear friction welding equipment for chain ring

Abstract

The embodiment of the utility model provides linear friction welding equipment for a chain ring. The linear friction welding equipment comprises a base, a stand column, an upsetting stand column, a vibration sliding table, a vibration clamp, a vibration oil cylinder, an upsetting sliding table, an upsetting clamp and an upsetting oil cylinder. To-be-welded chain rings are clamped through the vibration clamp and the upsetting clamp correspondingly, the upsetting clamp is conveyed to the vibration clamp through the upsetting oil cylinder so that the welding faces of the to-be-welded chain rings can make contact, then the vibration clamp can vibrate up and down through the vibration oil cylinder, and therefore the welding faces of the two to-be-welded chain rings can generate plastic flow; then the welding surfaces of the two to-be-welded chain rings are aligned through the vibration oil cylinder, and finally pressure is applied through the upsetting oil cylinder, so that the two to-be-welded chain rings are welded together, and a high-performance and high-quality welding seam comparable with a forging structure can be obtained.

Description

Technical Field

[0001] The present application relates to the field of friction welding, and in particular to a linear friction welding device 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, which is used to produce single-sided welded chain links of G100 grade and below.

[0004] However, the process strength of single-sided welded chain links of G100 grade and below cannot meet the lifting operations in high-end fields such as aerospace, power generation, and mining, and the current linear friction welding equipment cannot be used for chain link welding. Utility Model Content

[0005] The embodiment of the present application provides a linear friction welding device for chain links, which fills the current domestic technical gap in linear friction welding of chain links, thereby being able to produce chain links above G100 level.

[0006] The embodiment of the present application provides a linear friction welding device for a chain link, comprising a base, a column is fixedly installed on one end of the top surface of the base, and an upsetting column is fixedly installed on the other end of the top surface of the base;

[0007] A vibration slide is fixedly installed on one side of the column facing the upset column, a vibration fixture is movably installed on the vibration slide, the vibration fixture is connected to the base through a vibration cylinder, and the vibration cylinder is used to make the vibration fixture move along the vibration slide perpendicular to the top surface of the base;

[0008] A top forging slide is fixedly installed on the top surface of the base, and the top forging slide is located between the column and the top forging column. A top forging fixture is movably installed on the top forging slide, and the top forging fixture is connected to the top forging column through a top forging cylinder. The top forging cylinder is used to make the top forging fixture move along the top forging slide perpendicular to the vibration fixture.

[0009] In a feasible implementation, a first cavity and a second cavity are provided on the opposite surfaces of the vibration fixture and the upset fixture, two second cavities are located between two first cavities, and the first cavity connects the adjacent second cavities with the outside.

[0010] In a feasible implementation, the top forging cylinder includes a rough forging cylinder and a fine forging cylinder, the rough forging cylinder and the fine forging cylinder are fixedly connected, and the stroke of the rough forging cylinder is greater than the stroke of the fine forging cylinder.

[0011] In a feasible implementation, vibration-damping supports are fixedly mounted on the front and rear sides of the base respectively.

[0012] In a feasible implementation, the vibration-damping support member includes a vibration-damping pad and a support member, the vibration-damping pad is located at the top end of the support member, and the support member is perpendicular to the extension direction of the bottom surface of the base.

[0013] In a feasible implementation, the vibration slide is a dovetail type hydrostatic guide rail.

[0014] In a feasible implementation, the upsetting slide 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 upsetting fixture.

[0015] A linear friction welding device for chain links provided in an embodiment of the present application clamps the chain links to be welded by a vibration clamp and an upsetting clamp respectively, and sends the upsetting clamp to the vibration clamp by an upsetting cylinder to make the welding surfaces of the chain links to be welded contact with each other, and then vibrates the vibration clamp up and down by the vibration cylinder, so that the welding surfaces of the two chain links to be welded produce plastic flow, and then aligns the welding surfaces of the two chain links to be welded by the vibration cylinder, and finally applies pressure by the upsetting cylinder, so that the two chain links to be welded are welded together, so as to obtain a high-performance and high-quality weld comparable to a forged structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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;

[0017] 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.

[0018] Description of reference numerals:

[0019] 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;

[0020] 110-vibration-damping support member; 111-vibration-damping pad; 112-support member;

[0021] 901-rough forging cylinder; 902-fine forging cylinder. DETAILED DESCRIPTION

[0022] 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.

[0023] 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;

[0024] 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;

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In some examples, a first cavity and a second cavity are disposed 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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 .

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 .

[0040] 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.

[0041] 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 .

[0042] 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.

[0043] 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.

[0044] 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.

[0045] In some examples, the vibration slide table 400 is a dovetail type hydrostatic guide.

[0046] 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.

[0047] Exemplarily, the vibration slide table 400 is integrally cast to minimize the stiffness loss caused by mechanical connection.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Exemplarily, the I-shaped guide rail is formed by integral casting.

[0052] 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.

[0053] 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 device for chain links, characterized in that: It comprises a base (100), a column (200) is fixedly mounted on one end of the top surface of the base (100), and an upsetting column (300) is fixedly mounted on the other end of the top surface of the base (100); A vibration slide (400) is fixedly mounted on one side of the column (200) facing the upset column (300); a vibration fixture (500) is movably mounted on the vibration slide (400); the vibration fixture (500) is connected to the base (100) via a vibration cylinder (600); the vibration cylinder (600) is used to move the vibration fixture (500) along the vibration slide (400) perpendicular to the top surface of the base (100); A top forging slide (700) is fixedly mounted 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 mounted on the top forging slide (700), and the top forging fixture (800) is connected to the top forging column (300) via a top forging cylinder (900), and the top forging cylinder (900) is used to enable the top forging fixture (800) to move along the top forging slide (700) perpendicular to the vibration fixture (500).

2. The linear friction welding device for chain links according to claim 1, characterized in that: A first cavity and a second cavity are disposed on the opposite surfaces of the vibration fixture (500) and the upset forging fixture (800), two second cavities are located between two first cavities, and the second cavities communicate with adjacent second cavities and the outside.

3. The linear friction welding device for chain links according to claim 1, characterized in that: The top forging cylinder (900) comprises 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).

4. The linear friction welding device for chain links according to any one of claims 1 to 3, characterized in that: Vibration-damping support members (110) are fixedly mounted on the front and rear sides of the base (100) respectively.

5. The linear friction welding device for chain links according to claim 4, characterized in that: The vibration-damping support member (110) comprises a vibration-damping pad (111) and a support member (112); the vibration-damping 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).

6. The linear friction welding device for chain links according to any one of claims 1 to 3, characterized in that: The vibration slide table (400) is a dovetail type static pressure guide rail.

7. The linear friction welding device for chain links according to any one of claims 1 to 3, characterized in that: The upsetting 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 upsetting fixture.

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