Fixture structure for electron beam welding

Abstract

The utility model provides a fixture structure for electron beam welding, which comprises a fixture body, a plurality of through holes are uniformly distributed on the fixture body close to the edge, and the through holes are used for being detachably connected to a workbench; an annular groove is coaxially formed in the clamp body in the direction from the center to the through hole, and the annular groove faces the workbench. The designed clamp structure is large in bearing surface, products with the maximum outer circle exceeding 500 mm can also be welded, the problem that the clamp structure interferes with a workbench when the clamp structure inclines laterally is solved, the clamp body can assist in heat dissipation of materials, the through holes are connected with the multidirectional screws to conduct pressing plate positioning, the flatness of the products is guaranteed, the structure is simple, and the clamp structure is convenient to use. The popularization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electron beam welding, and relates to a clamp structure of electron beam welding. BACKGROUND

[0002] The electron beam welding technology is an important component of high-energy beam processing technology. It is a method for welding by using the heat energy generated by the bombardment of an accelerated and focused electron beam on a welding part placed in a vacuum or a non-vacuum. In addition to the characteristics of no electrode, no oxidation, high input energy density, small heating area, fast welding speed, narrow weld heat affected zone, and small workpiece deformation, the electron beam welding also has the characteristics of deep electron beam penetration, large weld depth-width ratio, convenient electron beam control, good process repeatability, and non-pollution of the weld in the vacuum environment, and is widely used in many industries such as aerospace, atomic energy, national defense and military industry, automobile and electrical instrument.

[0003] The basic principle of electron beam welding is that the cathode in the electron gun emits electrons due to direct or indirect heating, and the electrons are accelerated under the action of a high-voltage electrostatic field and focused by an electromagnetic field to form an electron beam with extremely high energy density. The electron beam is used to bombard the joint of the workpiece, and the huge kinetic energy is converted into heat energy, which rapidly melts the workpiece material to form a molten pool, thereby realizing the welding of the workpiece.

[0004] The prior art discloses a welding clamp device, which comprises a first motor, a second motor, a first grab disc fixed on the first motor, a second grab disc fixed on the second motor, a side fixing clamp connected to the first grab disc, a top plate connected to the second grab disc, and a double-sided clamp, wherein the double-sided clamp has a first side and a second side, a first product to be welded is fixed between the first grab disc and the first side of the double-sided clamp through the side fixing clamp, and a second product to be welded is fixed between the second grab disc and the second side of the double-sided clamp through the top plate.

[0005] The prior art also discloses a welding clamping device, which comprises a first clamping plate, a second clamping plate, a clamp, and a connector. The center of the first clamping plate and the second clamping plate is provided with a circular through hole. The first clamping plate and the second clamping plate each have two inner and outer surfaces. The two inner surfaces are combined and placed in the clamp. The clamp has two opposite clamping surfaces, and a pair of circular through holes are arranged on the two clamping surfaces in a position opposite to each other. The connector passes through the circular through holes of the two clamping surfaces of the clamp and the circular through holes in the center of the first clamping plate and the second clamping plate, and connects the first clamping plate, the second clamping plate and the clamp together.

[0006] The prior art scheme further discloses a welding fixture, which comprises a bottom plate, a baffle, a pressing plate and connectors; the bottom plate is provided with regularly spaced T-shaped grooves around the periphery, the baffle is provided with through holes, and some of the connectors pass through the through holes of the baffle and the corresponding T-shaped grooves to fasten the baffle on the bottom plate; the pressing plate is provided with through holes at both ends, and some of the connectors pass through the through holes of the pressing plate and the corresponding T-shaped grooves to fasten the pressing plate on the bottom plate; and the baffle is located between the bottom plate and the pressing plate.

[0007] However, the prior art still has the problems that the growing size of the appearance cannot be met in the large-scale electron beam welding process, the fixture interferes with the workbench when the fixture tilts, and the number of the pressing plates of the general fixture is small, so that the flatness and parallelism of the main body and the accessory cannot be ensured, and therefore, there is an urgent need to design and develop an electron beam welding fixture structure to overcome the defects of the prior art and meet the actual application requirements. Practical new type content

[0008] In view of the problems in the prior art, the purpose of the present application is to provide an electron beam welding fixture structure, which has a large bearing surface and can weld products with a maximum outer circle of more than 500 mm, avoids the interference between the fixture structure and the workbench when the fixture structure tilts, and can assist the material in dissipating heat through the fixture body, position the pressing plate through the through holes and multi-directional screws, ensure the flatness and parallelism of the product, and has a simple structure and is suitable for promotion.

[0009] To achieve the purpose, the present application adopts the following technical scheme:

[0010] The present application provides an electron beam welding fixture structure, which comprises a fixture body, the fixture body is uniformly provided with a plurality of through holes near the edge, the through holes are used for detachable connection to a workbench, the fixture body is coaxially provided with an annular groove along the direction of the through hole to the center, and the annular groove is arranged towards the workbench.

[0011] In the present application, the fixture structure has a large bearing surface and can weld products with a maximum outer circle of more than 500 mm, avoids the interference between the fixture structure and the workbench when the fixture structure tilts, and can assist the material in dissipating heat through the fixture body, position the pressing plate through the through holes and multi-directional screws, ensure the flatness and parallelism of the product, and has a simple structure and is suitable for promotion.

[0012] It needs to be explained that the bottom surface of the clamp body, that is, the surface without slotting, is fixed with the three-jaw chuck of the welding table, the through hole is treated as an air clearance hole to avoid interference between the clamp and the workbench, a plurality of pressing plates are arranged around the clamp during use, the main body and the assembly protrusion of the accessory are fixed using the pressing plate before welding, the main body and the accessory / flat surface are attached to the surface of the clamp body provided with the annular groove, so that deformation does not occur during electron beam welding, the subsequent processing difficulty is reduced, the probability of subsequent shaping of the product is reduced, and the processing cost is saved.

[0013] It needs to be explained that the specific number of the plurality of holes is not specially limited, and a person skilled in the art can adaptively adjust according to the actual situation.

[0014] As a preferred technical scheme of the utility model, the clamp body is a cylinder.

[0015] As a preferred technical scheme of the utility model, the clamp body is an aluminum alloy body.

[0016] It needs to be explained that the clamp body of the utility model is made of aluminum alloy because the aluminum alloy has good heat conduction performance, can quickly dissipate heat while ensuring strength, and reduces product deformation.

[0017] As a preferred technical scheme of the utility model, the diameter of the clamp body is 50-60cm, for example, can be 50cm, 51cm, 52cm, 53cm, 54cm, 55cm, 56cm, 57cm, 58cm, 59cm, 60cm, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0018] It needs to be explained that the diameter of the clamp body of the utility model is 50-60cm, the bearing surface can meet the welding requirements of most large electron beams at present, and the bearing capacity is good, which can further improve the operation efficiency.

[0019] As a preferred technical scheme of the utility model, the thickness of the clamp body is 5-6cm, for example, can be 5cm, 5.1cm, 5.2cm, 5.3cm, 5.4cm, 5.5cm, 5.6cm, 5.7cm, 5.8cm, 5.9cm, 6cm, but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0020] The thickness of the clamp body in the utility model is 5-6cm, because within this range, the clamp is more stable, if not within this range, insufficient thickness will lead to insufficient durability, and excessive thickness will make the weight too large and the clamp unstable.

[0021] As a preferred technical solution of the utility model, the diameter of the through hole is 10-12mm, for example, it can be 10mm, 10.2mm, 10.4mm, 10.6mm, 10.8mm, 11mm, 11.2mm, 11.4mm, 11.6mm, 11.8mm, 12mm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0022] As a preferred technical solution of the utility model, the through hole is detachably connected to the workbench through a bolt.

[0023] In the utility model, the diameter of the through hole is 10-12mm, which can be connected with the workbench by M10 screw, and the product can be locked from multiple directions with the cooperation of the pressing plate, so as to ensure the flatness and parallelism between the main body and the accessory; the design of the clearance hole can prevent interference between the clamp body and the welding workbench.

[0024] As a preferred technical solution of the utility model, the depth of the annular groove is 3-4cm, for example, it can be 3cm, 3.1cm, 3.2cm, 3.3cm, 3.4cm, 3.5cm, 3.6cm, 3.7cm, 3.8cm, 3.9cm, 4cm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0025] As a preferred technical solution of the utility model, the width of the annular groove is 20-22cm, for example, it can be 20cm, 20.2cm, 20.4cm, 20.6cm, 20.8cm, 21cm, 21.2cm, 21.4cm, 21.6cm, 21.8cm, 22cm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0026] In the utility model, the depth of the annular groove is 3-4cm and the width is 20-22cm, because within this range, it is stably adapted to the machine, if not within this range, it will not interfere with the welding machine, and will cause collision with the machine.

[0027] As a preferred technical solution of the utility model, the maximum linear distance between the annular groove and the center of the clamp body is 43-45cm, for example, it can be 43cm, 43.2cm, 43.4cm, 43.6cm, 43.8cm, 44cm, 44.2cm, 44.4cm, 44.6cm, 44.8cm, 45cm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.

[0028] The maximum linear distance between the annular groove and the center of the fixture body is 43-45cm, because in this range, it is stably adapted to the machine table, if not in this range, it will not interfere with the welding machine table, and will cause collision with the machine table.

[0029] Compared with the prior art, the utility model has the beneficial effects that:

[0030] In the utility model, the fixture structure bearing surface is designed to be large, and products exceeding 500mm maximum outer circle can also be welded, avoiding the problem of interference between the fixture structure and the workbench when tilting, and the fixture body can assist the material itself in heat dissipation, the positioning of the pressing plate is carried out through the through hole connected with the multidirectional screw, the flatness and parallelism of the product are ensured, the structure is simple, and it is suitable for promotion. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The utility model provides a schematic diagram of the fixture structure of electron beam welding for one specific embodiment of the utility model;

[0032] Among them, 1 - fixture body;2 - through hole;3 - annular groove. PREFERRED EMBODIMENT

[0033] It should be understood that in the description of the utility model, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] It should be noted that in the description of the utility model, unless otherwise specified and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] In one specific embodiment, the present invention provides a fixture structure for electron beam welding, such as... Figure 1 As shown, the fixture structure includes a fixture body 1, and a plurality of through holes 2 are evenly distributed near the edge of the fixture body 1. The through holes 2 are used for detachable connection to the worktable. The fixture body 1 is provided with an annular groove 3 coaxially along the direction from the center to the through holes 2, and the annular groove 3 is oriented towards the worktable.

[0037] In this utility model, the designed fixture structure has a large bearing surface, and products with a maximum outer diameter of over 500mm can also be welded, avoiding the problem of interference between the fixture structure and the worktable when it tilts to the side. In addition, the fixture body 1 can assist the material itself in heat dissipation, and the multi-directional screws connected through the through hole 2 are used for pressure plate positioning to ensure the flatness and parallelism of the product. The structure is simple and suitable for promotion.

[0038] It should be noted that the bottom surface of the fixture body 1 in this utility model, that is, the side without grooves, is fixed to the three-jaw chuck of the welding table. The through hole 2 is treated as a clearance hole to avoid interference between the fixture and the worktable. During use, multiple pressure plates are set around the fixture. The main body and accessories are assembled at the protrusions. Before welding, the pressure plates are used to fix them to ensure that the main body and accessories / planes fit with the side of the fixture body 1 with the annular groove 3, so that no deformation will occur during electron beam welding.

[0039] It should be noted that the specific number of "several" in this utility model is not specifically limited, and those skilled in the art can make adaptive adjustments according to the actual situation. The number of through holes 2 can be 2, 4, 5, 8, 10, 15, 20, 30, 35, etc.

[0040] Furthermore, the fixture body 1 is a cylinder.

[0041] Furthermore, the fixture body 1 is made of aluminum alloy.

[0042] It should be noted that the clamp body 1 made of aluminum alloy is used in this utility model because it has good thermal conductivity, which ensures strength while allowing for rapid heat dissipation and reducing product deformation.

[0043] Furthermore, the diameter of the fixture body 1 is 50 to 60 cm, for example, it can be 50 cm, 51 cm, 52 cm, 53 cm, 54 cm, 55 cm, 56 cm, 57 cm, 58 cm, 59 cm, 60 cm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0044] It needs to be explained that the diameter of the clamp body 1 is 50-60cm, the bearing surface can meet the welding requirements of most large electron beams at present, and the bearing capacity is good, which can further improve the operation efficiency.

[0045] Further, the thickness of the clamp body 1 is 5-6cm, for example, it can be 5cm, 5.1cm, 5.2cm, 5.3cm, 5.4cm, 5.5cm, 5.6cm, 5.7cm, 5.8cm, 5.9cm, 6cm, etc., but not limited to the listed values, other values not listed in the range are also applicable.

[0046] Further, the diameter of the through hole 2 is 10-12mm, for example, it can be 10mm, 10.2mm, 10.4mm, 10.6mm, 10.8mm, 11mm, 11.2mm, 11.4mm, 11.6mm, 11.8mm, 12mm, etc., but not limited to the listed values, other values not listed in the range are also applicable.

[0047] Further, the through hole 2 is detachably connected to the workbench by a bolt.

[0048] The diameter of the through hole 2 in the utility model is 10-12mm, which can be connected with the workbench by M10 screw, and the product can be locked from multiple directions with the cooperation of the pressing plate, to ensure the flatness and parallelism between the main body and the accessory; the design of the clearance hole can prevent interference between the clamp body 1 and the welding workbench.

[0049] Further, the depth of the annular groove 3 is 3-4cm, for example, it can be 3cm, 3.1cm, 3.2cm, 3.3cm, 3.4cm, 3.5cm, 3.6cm, 3.7cm, 3.8cm, 3.9cm, 4cm, etc., but not limited to the listed values, other values not listed in the range are also applicable.

[0050] Further, the width of the annular groove 3 is 20-22cm, for example, it can be 20cm, 20.2cm, 20.4cm, 20.6cm, 20.8cm, 21cm, 21.2cm, 21.4cm, 21.6cm, 21.8cm, 22cm, etc., but not limited to the listed values, other values not listed in the range are also applicable.

[0051] Further, the maximum linear distance between the annular groove 3 and the center of the clamp body 1 is 43-45 cm, for example, it can be 43 cm, 43.2 cm, 43.4 cm, 43.6 cm, 43.8 cm, 44 cm, 44.2 cm, 44.4 cm, 44.6 cm, 44.8 cm, 45 cm, etc., but not limited to the listed values, other values not listed in the range are also applicable.

[0052] Embodiment 1

[0053] The embodiment provides an electron beam welding clamp structure, wherein:

[0054] The clamp structure comprises a clamp body 1, a plurality of through holes 2 are uniformly distributed near the edge of the clamp body 1, and the through holes 2 are used for detachable connection to a workbench; the annular groove 3 is coaxially provided on the clamp body 1 along the direction of the center to the through hole 2, and the annular groove 3 is arranged towards the workbench.

[0055] The clamp body 1 is a cylindrical body, the clamp body 1 is an aluminum alloy body, the diameter of the clamp body 1 is 58 cm, and the thickness of the clamp body 1 is 5.5 cm.

[0056] The diameter of the through hole 2 is 10 mm, and the through hole 2 is detachably connected to the workbench through a bolt.

[0057] The depth of the annular groove 3 is 3 cm, the width of the annular groove 3 is 20 cm, and the maximum linear distance between the annular groove 3 and the center of the clamp body 1 is 43 cm.

[0058] In summary, the clamp structure designed in the embodiment has a large bearing surface, and products with a maximum outer circle of more than 500 mm can also be welded, avoiding the problem of interference between the clamp structure and the workbench when the clamp structure tilts, and the clamp body 1 can assist in heat dissipation of the material itself, the through hole 2 is connected to a multi-directional screw for pressing plate positioning, ensuring the flatness and parallelism of the product, the structure is simple, and is suitable for promotion.

[0059] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that any changes or replacements within the technical range disclosed by the present application can be easily thought of by those skilled in the art, and all fall within the protection scope and disclosure range of the present application.

Claims

1. An electron beam welded fixture structure, characterized by, The clamp structure comprises a clamp body, a plurality of through holes are uniformly distributed near the edge of the clamp body, and the through holes are used for detachable connection to a workbench; The clamp body is coaxially provided with an annular groove in the direction of the center to the through hole, and the annular groove is arranged towards the workbench; The depth of the annular groove is 3-4 cm; The width of the annular groove is 20-22 cm; The maximum linear distance between the annular groove and the center of the clamp body is 43-45 cm.

2. The electron beam welded clamp structure of claim 1, wherein, The clamp body is a cylindrical body.

3. The electron beam welded clamp structure of claim 1, wherein, The clamp body is an aluminum alloy body.

4. The electron beam welded clamp structure of claim 1, wherein, The diameter of the clamp body is 50-60 cm.

5. The electron-beam welded clamp structure according to any one of claims 1 to 4, characterized in that The thickness of the clamp body is 5-6 cm.

6. The electron beam welded clamp structure of claim 1, wherein, The diameter of the through hole is 10-12 mm.

7. The electron beam welded clamp structure of claim 1, wherein, The through hole is detachably connected to the workbench by a bolt.

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