High-precision four-axis machining welding motion platform

Abstract

The utility model discloses a high-precision four-axis machining welding motion platform which comprises a base, a shifting mechanism is arranged on the base, the shifting mechanism is of a four-axis type and comprises an XY shifting assembly and a cradle rotary table, the cradle rotary table is arranged at the moving end of the XY shifting assembly, the XY shifting assembly is of a linear motor module type, and the cradle rotary table is arranged at the moving end of the XY shifting assembly. According to the scheme, a motion platform structure is improved, a conventional three-axis platform is changed into a four-axis platform to facilitate three-dimensional and curved surface welding and the like, specifically, the cradle rotary table is moved through the XY displacement assembly, the linear motor module type XY displacement assembly has the advantages of being high in precision, simplified in structure and the like and is suitable for high-precision welding, and the cradle rotary table is composed of the double-rotation driving mechanism, so that the welding efficiency is improved. The rotating center line is not parallel so as to facilitate three-dimensional and curved surface welding and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a high-precision four-axis processing welding motion platform. Background Art

[0002] The original welding platform power device uses a screw module as the power drive with low motion accuracy and efficiency, and usually uses XYZ three-axis operation to achieve plane welding. It cannot meet the requirements of high-precision three-dimensional and curved surface welding processes and needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application document discloses a high-precision four-axis machining and welding motion platform, comprising a base, on which a shift mechanism is arranged, the shift mechanism is of a four-axis type, and comprises an XY shift assembly and a cradle turntable, the cradle turntable is arranged at the moving end of the XY shift assembly, the XY shift assembly is of a linear motor module type, the cradle turntable comprises a mounting seat, a first rotation drive mechanism, and a second rotation drive mechanism, the first rotation drive mechanism is arranged on the mounting seat and the output end of the first rotation drive mechanism is connected to the second rotation drive mechanism, a machining table is arranged at the output end of the second rotation drive mechanism, and the rotation center lines of the first rotation drive mechanism and the second rotation drive mechanism are arranged non-parallel.

[0005] In this solution, the motion platform structure is improved, and the conventional three-axis platform is changed to a four-axis type to facilitate three-dimensional and curved surface welding. Specifically, the cradle turntable is moved by an XY shift assembly. The linear motor module type XY shift assembly has the advantages of high precision and simplified structure, and is suitable for high-precision welding. The cradle turntable is composed of a dual rotary drive mechanism, and the rotation center lines are non-parallel to facilitate three-dimensional and curved surface welding.

[0006] Furthermore, the XY shift assembly includes a connected X-axis shift mechanism and a Y-axis shift mechanism, and both the X-axis shift mechanism and the Y-axis shift mechanism are direct drive motor module types. High-precision movement helps to improve welding accuracy, and simplified structure helps to facilitate layout and installation.

[0007] Furthermore, the X-axis shift mechanism and the Y-axis shift mechanism both include a linear motor module, a dust cover, a dust side plate, an end plate, and a slide seat. The slide seat includes a fixed plate and a connecting plate. The dust cover, dust side plate and end plate form a box body. The motor assembly and guide rail assembly in the linear motor module are both in the box body cavity. The slide in the linear motor module is connected to the fixed plate outside the box body through a connecting plate. The box body is composed of a dust cover, a side plate and an end plate to reduce the entry of dust and the like and avoid affecting the operation of the motor module and the like. The slide seat is composed of a connecting plate, a fixed plate, etc., which is convenient for docking and installation with the linear motor module.

[0008] Furthermore, the connecting plate is provided with sliding grooves at the bottom surfaces of both ends, the upper parts of the dustproof side plates are in the sliding grooves and slideably fit, the connecting plate in the box body cavity is connected to the slide table of the linear motor module, and the shaping of the sliding grooves at the ends of the connecting plate facilitates docking with the side plates, helps to reduce the size of the gap, and then helps to reduce the entry of dust.

[0009] Furthermore, an anti-collision platform is provided at the end plate to improve safety.

[0010] Furthermore, the linear motor module includes a grating encoder to improve movement accuracy.

[0011] Furthermore, the first rotary drive mechanism is arranged along the X direction and the second rotary drive mechanism is arranged along the Z direction, which facilitates curved surface and three-dimensional welding.

[0012] Furthermore, the first rotation drive mechanism and the second rotation drive mechanism are both DDR rotation motors with grating encoders. The DDR rotation motors are permanent magnet synchronous motors with the advantages of simple structure, reliable operation, and small size. When used with grating encoders, they have the advantages of high precision.

[0013] Furthermore, the base includes a mounting frame, a marble platform and a foot cup. The platform is arranged on the mounting frame and the foot cup is arranged at the bottom surface of the mounting frame. An XY displacement component is arranged on the platform. The deformation of the marble platform is small and the equipment runs stably.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model improves the structure of the welding platform. The four-axis platform is convenient for three-dimensional and curved surface welding. The linear drive motor module and DDR rotary motor improve the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of a high-precision four-axis machining welding motion platform in Example 1;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure after the middle dust cover is removed;

[0019] Figure 3 This is a schematic diagram of the placement of the anti-collision platform;

[0020] Wherein, the accompanying drawings are marked as follows:

[0021] 1. Base; 2. X-axis shifting mechanism; 3. Y-axis shifting mechanism; 4. Processing table; 5. Cradle turntable; 10. Mounting frame; 11. Platform; 31. Dust cover plate; 32. End plate; 33. Dust side plate; 34. Sliding seat; 35. Anti-collision table; 51. First rotary drive mechanism; 52. Mounting seat; 53. Second rotary drive mechanism; 54. Support frame; 341. Fixed plate; 342. Connecting plate; 343. Slide groove. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] like Figure 1-Figure 3 As shown, in this example, a high-precision four-axis machining welding motion platform includes a base 1. The base 1 has a structure such as a marble platform 11 fixed on a mounting frame 10. The mounting frame is made of square steel. Foot cups can be installed at the four corners of the mounting frame 10. The foot cups can be universal or fixed. The foot cups can be made of carbon steel galvanized foot cups, stainless steel foot cups, nylon foot cups, shock-absorbing foot cups, etc. The foot cups should be selected according to the load-bearing capacity and the use environment.

[0025] In this example, a four-axis shifting mechanism is installed on the base 1. Specifically, the shifting mechanism includes an XY shifting assembly and a cradle turntable 5. The cradle turntable is installed at the moving end of the XY shifting assembly.

[0026] In this example, the XY shift assembly is a linear motor module type. Specifically, the XY shift assembly includes a connected X-direction shift mechanism 2 and a Y-direction shift mechanism 3. The X-direction shift mechanism, that is, its moving end, shifts along the X direction, and the Y-direction shift mechanism, that is, its moving end, shifts along the Y direction. In this example, the X-direction shift mechanism 2 is installed on a marble platform 11, and the Y-direction shift mechanism 3 is placed at the moving end of the X-direction shift mechanism 2, and the cradle turntable 5 is placed at the moving end of the Y-direction shift mechanism 3.

[0027] The X-axis shifting mechanism and the Y-axis shifting mechanism are both direct drive motor module types, such as the X-axis shifting mechanism and the Y-axis shifting mechanism both include a linear motor module, a dust cover, a dust side plate, an end plate, and a slide seat. The slide seat 34 includes a fixed plate 341 and a connecting plate 342. The Y-axis shifting mechanism is installed on the slide seat of the X-axis shifting mechanism.

[0028] Take the Y-axis shift mechanism as an example. Figure 1 , Figure 2 , Figure 3As shown, the dust cover plate 31, the dust side plate 33 and the end plate 32 form a box body, and the motor assembly and the guide rail assembly in the linear motor module are all in the box body cavity, such as being directly installed on the slide seat in the X-axis shift mechanism.

[0029] The slide in the linear motor module is connected to the fixed plate 341 outside the box body through the connecting plate 342. There is a gap between the top of the dustproof side plate 33 and the bottom of the dustproof cover plate 31. The part of the connecting plate 342 in the box cavity is fixed to the slide in the linear motor module below. The two ends of the connecting plate 342 extend out of the gap and are fixed to the two ends of the fixed plate 341. The slide seat is overall in the shape of an opening, and the dustproof cover plate 31 passes through the cavity of the slide seat 34.

[0030] In this example, in order to reduce the size of the gap, a slide groove 343 is formed at the bottom surface of the end of the connecting plate 342, and the upper part of the dustproof side plate is located in the slide groove and slides in the groove.

[0031] In this example, the linear motor module includes a grating encoder. For example, the grating scale in the grating encoder is fixed on the bottom wall of the box cavity, and the corresponding reading head is fixed to the slide, which helps to improve the movement accuracy.

[0032] In addition, an anti-collision platform 35 may be installed at the end plate 32 to provide buffering for the anti-collision platform, and the anti-collision platform may be purchased freely from the market.

[0033] In this example, the cradle turntable 5 includes a mounting seat 52, a first rotation drive mechanism 51, and a second rotation drive mechanism 53. Figure 1 , Figure 2 As shown, the mounting seat 52 is composed of two seat bodies, and the two seat bodies are fixed at intervals on the top surface of the slide 34 in the Y-axis shift mechanism, that is, on the fixed plate. A first rotary drive mechanism 51 is installed on one of the seat bodies, such as a DDR rotary motor with a grating encoder type, which has high precision. A support frame 54 is installed at the output end of the first rotary drive mechanism 51, and a second rotary drive mechanism 53 is installed on the support frame 54, which is also such as a DDR rotary motor with a grating encoder type. The other end of the support frame is rotatably connected to the adjacent seat body through a deep groove bearing.

[0034] The processing table 4 is fixed at the output end of the second rotary drive mechanism 53, and the rotation center lines of the first rotary drive mechanism 51 and the second rotary drive mechanism 53 are not parallel. For example, the first rotary drive mechanism is arranged along the X direction, and the corresponding rotation center line extends along the X direction. When the support frame is in a horizontal state, the second rotary drive mechanism is arranged on the support frame along the Z direction.

[0035] This four-axis platform is convenient for three-dimensional and curved surface welding, etc. The linear motor module-type XY shift component has high movement accuracy. The rotary drive mechanism in the cradle turntable is a DDR rotary motor type, which also has the advantages of high movement accuracy and high welding accuracy.

[0036] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A high-precision four-axis machining welding motion platform, comprising a base (1), wherein a shift mechanism is arranged on the base (1), characterized in that: The displacement mechanism is of a four-axis type, comprising an XY displacement component and a cradle turntable (5); the cradle turntable (5) is arranged at the moving end of the XY displacement component; the XY displacement component is of a linear motor module type; the cradle turntable (5) comprises a mounting seat (52), a first rotation drive mechanism (51), and a second rotation drive mechanism (53); the first rotation drive mechanism (51) is arranged on the mounting seat (52) and the output end of the first rotation drive mechanism (51) is connected to the second rotation drive mechanism (53); a processing table (4) is arranged at the output end of the second rotation drive mechanism (53); and the rotation center lines of the first rotation drive mechanism (51) and the second rotation drive mechanism (53) are arranged non-parallel.

2. A high-precision four-axis machining and welding motion platform as claimed in claim 1, characterized in that: The XY displacement assembly comprises an X-direction displacement mechanism (2) and a Y-direction displacement mechanism (3) which are connected to each other. The X-direction displacement mechanism (2) and the Y-direction displacement mechanism (3) are both direct drive motor module types.

3. A high-precision four-axis machining and welding motion platform as claimed in claim 2, characterized in that: The X-axis displacement mechanism (2) and the Y-axis displacement mechanism (3) both comprise a linear motor module, a dust cover plate (31), a dust cover side plate (33), an end plate (32), and a slide seat (34); the slide seat (34) comprises a fixed plate (341) and a connecting plate (342); the dust cover plate (31), the dust cover side plate (33), and the end plate (32) form a box body; the motor assembly and the guide rail assembly in the linear motor module are both located in the box body cavity; the slide table in the linear motor module is connected to the fixed plate (341) outside the box body through the connecting plate (342).

4. A high-precision four-axis machining and welding motion platform as claimed in claim 3, characterized in that: The connecting plate (342) is provided with sliding grooves (343) at the bottom surfaces of both ends, the upper part of the dustproof side plate (33) is located in the sliding grooves and slides in cooperation, and the connecting plate in the box body cavity is connected to the slide table of the linear motor module.

5. A high-precision four-axis machining and welding motion platform as claimed in claim 3, characterized in that: An anti-collision platform (35) is arranged at the end plate (32).

6. A high-precision four-axis machining and welding motion platform as claimed in claim 3, characterized in that: The linear motor module includes a grating encoder.

7. A high-precision four-axis machining and welding motion platform as claimed in claim 1, characterized in that: The first rotary drive mechanism is disposed along the X direction and the second rotary drive mechanism is disposed along the Z direction.

8. A high-precision four-axis machining and welding motion platform as claimed in claim 1, characterized in that: The first rotary drive mechanism and the second rotary drive mechanism are both DDR rotary motors with grating encoders.

9. A high-precision four-axis machining and welding motion platform as claimed in claim 1, characterized in that: The base (1) comprises a mounting frame (10), a marble-shaped platform (11) and a foot cup, wherein the platform is arranged on the mounting frame and the foot cup is arranged at the bottom surface of the mounting frame, and an XY displacement component is arranged on the platform.

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