Curved surface profiling vacuum chuck clamp and design method thereof

Abstract

The curved surface profiling vacuum suction cup clamp comprises a suction cup body, and the suction cup body is provided with a profiling curved surface attached to the curved surface of a part to be machined; a semispherical groove is formed in the edge, making contact with a part to be machined, of the suction cup body and used for containing a sealing ring; a plurality of supporting bosses are arranged on the profiling curved surface in an array mode, and a V-shaped or hemispherical ventilation groove is formed between every two adjacent supporting bosses. The invention further discloses a design method of the curved surface profiling vacuum chuck clamp. According to the vacuum chuck clamp for the curved-surface and special-shaped parts and the design method of the vacuum chuck clamp, a reliable, rapid and stable clamping mode can be achieved, and therefore the problems that in the machining process, the clamping process is complex, and the clamping efficiency is low are solved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a curved surface contoured vacuum suction cup fixture and a design method thereof. Background Art

[0002] With the continuous development of industrial technology, the appearance of products has gradually deviated from regular and simple geometric shapes and gradually developed towards complex curved surfaces and streamlined curved surfaces. For integral metal curved surface parts, clamping in machining has always been a difficult problem, especially for thin-walled and large-sized curved surface parts.

[0003] The existing suction cups are mainly flat suction cups, including rectangular venting groove suction cups with sealing rings and flat suction cups without sealing rings. These traditional suction cups have problems such as low clamping efficiency and complicated clamping process when processing complex curved surfaces, which makes it difficult to meet the requirements of lean production.

[0004] Therefore, technicians in this field are committed to developing a curved surface contoured vacuum suction cup fixture and a design method thereof to solve the problem that parts with complex curved surfaces and streamlined curved surface appearance are difficult to clamp during mechanical processing. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to provide a curved surface contoured vacuum suction cup fixture and a design method thereof to solve the deficiencies in the prior art and achieve reliable, fast and stable clamping of complex curved surface parts.

[0006] To achieve the above-mentioned purpose, the present invention provides a curved surface contoured vacuum suction cup fixture, comprising a suction cup body, wherein the suction cup body has a contoured curved surface that fits the curved surface of a part to be processed; a hemispherical groove is provided at the edge of the suction cup body that contacts the part to be processed, for placing a sealing ring; a plurality of supporting bosses are arranged in an array on the contoured curved surface, and V-shaped or hemispherical ventilation grooves are provided between adjacent supporting bosses.

[0007] Furthermore, the shape of the suction cup body is adjusted according to the setting of the machine tool to adapt to the installation requirements and processing space of the machine tool.

[0008] Furthermore, one or more ventilation holes are arranged on the surface of part of the ventilation grooves, and the ventilation holes are connected with the air pipe joint arranged outside the suction cup body through the air passage inside the suction cup body.

[0009] Furthermore, the suction cup body is made of a rigid material, and the rigid material includes aluminum alloy, stainless steel and engineering plastics.

[0010] Furthermore, it also includes the sealing ring, which is made of elastic material, and the elastic material includes rubber and silicone.

[0011] The present invention also provides a curved surface contoured vacuum suction cup clamp, comprising a suction cup main body, on which a plurality of adsorption areas are arranged, each of which has a contoured curved surface that completely fits the curved surface of a part to be processed; a hemispherical groove is arranged on the edge of each adsorption area that contacts the part to be processed, for placing a sealing ring; a plurality of supporting bosses are arranged in an array on the contoured curved surface, and V-shaped or hemispherical ventilation grooves are arranged between adjacent supporting bosses.

[0012] Furthermore, each adsorption region is not connected to each other.

[0013] Furthermore, each adsorption area is interconnected.

[0014] The present invention further provides a method for designing a curved surface contoured vacuum suction cup fixture, comprising the following steps:

[0015] Step 1: According to the surface shape of the part to be processed, use 3D design software to design a contoured surface that fits it perfectly as the shape of the suction cup body;

[0016] Step 2: Design a V-shaped or hemispherical ventilation groove on the suction cup body to form vacuum adsorption;

[0017] Step 3: Design a hemispherical groove on the edge where the suction cup body contacts the workpiece to be processed for placing the sealing ring.

[0018] Furthermore, the V-shaped or hemispherical ventilation groove in step 2 is designed according to the shape of the curved surface and the stress conditions of the part to be processed to optimize the adsorption effect.

[0019] The beneficial effects of the present invention are:

[0020] 1. Improve clamping efficiency: The curved surface design that fits the surface to be processed is adopted to achieve fast and accurate clamping of complex curved surface parts. There is no need to use fasteners such as pressure plates and screws, which simplifies the clamping process and improves the clamping efficiency.

[0021] 2. Improve clamping stability: The curved surface profiling design and the cooperation of the sealing ring ensure good sealing between the suction cup and the part, provide strong adsorption force, and ensure stability during processing.

[0022] 3. Simplify programming work: Since there is no need to consider the interference of fasteners such as pressure plates and screws, the programming work is simplified and the programming efficiency is improved.

[0023] 4. Improve processing efficiency: Stable clamping and simplified programming work shorten the processing preparation time and improve the overall processing efficiency.

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of a traditional vacuum flat suction cup;

[0026] Figure 2 yes Figure 1 A partial enlarged view of

[0027] Figure 3 This is the front view of a traditional vacuum flat suction cup;

[0028] Figure 4 It is a structural schematic diagram of a curved surface contoured vacuum suction cup fixture of a preferred embodiment of the present invention;

[0029] Figure 5 It is a structural schematic diagram of a curved surface contoured vacuum suction cup fixture of a preferred embodiment of the present invention from another angle;

[0030] Figure 6 It is a structural schematic diagram of a curved surface contoured vacuum suction cup fixture of another preferred embodiment of the present invention;

[0031] Figure 7 is a structural schematic diagram of another preferred embodiment of the curved surface contoured vacuum suction cup fixture of the present invention from another angle;

[0032] Figure 8 It is a structural schematic diagram of a curved surface contoured vacuum suction cup fixture of another preferred embodiment of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of a curved surface contoured vacuum suction cup fixture according to another preferred embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following describes the preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0035] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0036] like Figure 1-3As shown, the conventional vacuum flat suction cup comprises a plurality of rectangular bosses 1 arranged in an array, and rectangular grooves 2 arranged transversely and longitudinally are formed between adjacent rectangular bosses 1, and the rectangular bosses 1 and the rectangular grooves 2 serve as supporting points and pulling points respectively.

[0037] The purpose of the present invention is to provide a vacuum suction cup fixture for curved and special-shaped parts and a design method thereof, so as to realize a reliable, fast and stable clamping method, thereby solving the problems of complex clamping process and low clamping efficiency during processing. Using the contoured curved vacuum suction cup designed by the present invention, fasteners such as pressure plates and screws can be ignored during programming, and the processing can be completed directly in one go, thereby improving the clamping efficiency, programming efficiency and processing efficiency.

[0038] 1. Design of the suction cup body

[0039] Use 3D design software (such as SolidWorks, UG NX, etc.) to accurately model the curved surface of the part to be processed, and design a suction cup body that fits the curved surface perfectly. The shape of the suction cup body is adjusted according to the settings of the machine tool to adapt to the installation requirements and processing space of the machine tool. The suction cup body material is made of rigid materials (such as aluminum alloy, stainless steel, engineering plastics, etc.) to ensure the structural strength and durability of the suction cup.

[0040] 2. Design of the sealing ring

[0041] A hemispherical groove is designed at the edge where the suction cup body contacts the part to place the sealing ring. The sealing ring is made of elastic material (such as rubber, silicone, etc.), which can adapt to slight changes in the shape of the curved surface, provide a good sealing effect, prevent air leakage, and improve the efficiency and stability of vacuum adsorption.

[0042] 3. Design of ventilation groove

[0043] On the surface of the suction cup body, V-shaped or hemispherical ventilation grooves are designed according to the shape of the part surface and the stress conditions. V-shaped or hemispherical grooves can better adapt to the changes in the surface, provide uniform adsorption pressure and support, and improve the reliability and stability of clamping.

[0044] 4. Manufacturing and Assembly

[0045] According to the designed suction cup model, the suction cup body and sealing groove are manufactured by appropriate processing technology such as CNC machining and 3D printing. During assembly, the sealing ring is installed in the hemispherical groove to ensure that it is tightly combined with the suction cup body. The suction cup body is connected to the vacuum pipeline system and used in conjunction with the machine tool.

[0046] 5. Usage

[0047] Before processing, place the curved surface part to be processed accurately on the fixture so that its curved surface fits perfectly with the curved surface of the suction cup body. Start the vacuum system, the sealing ring ensures the airtightness of the adsorption area, and the ventilation groove provides uniform vacuum adsorption force. Since the suction cup fits perfectly with the curved surface of the part, the clamping process is simple and fast, and the processing can be completed directly without the use of fasteners such as pressure plates and screws.

[0048] Example 1

[0049] like Figure 4 , 5 As shown, this embodiment provides a curved surface contoured vacuum suction cup fixture, comprising:

[0050] Suction cup body 10: The suction cup body 10 has a contoured curved surface that is completely in line with the curved surface of the part to be processed. The shape of the suction cup body 10 is adjusted according to the setting of the machine tool to adapt to the installation requirements and processing space of the machine tool.

[0051] Support bosses 11: A plurality of support bosses 11 arranged in an array are provided on the contoured surface.

[0052] Ventilation groove 12: A hemispherical vent groove 12 is provided between adjacent support bosses 11 on the suction cup body 10 to form vacuum adsorption. One or more vent holes 13 are provided on the surface of part of the vent groove 12, and the vent hole 13 is connected to the air pipe joint 14 provided outside the suction cup body 10 through the air passage inside the suction cup body 10.

[0053] Sealing ring 15: A hemispherical groove is provided at the edge of the suction cup body 10 that contacts the workpiece to be processed, for accommodating the sealing ring 15.

[0054] Example 2

[0055] like Figure 6 , 7 As shown, this embodiment provides a curved surface contoured vacuum suction cup fixture, comprising:

[0056] Suction cup body 10: The suction cup body 10 has a contoured curved surface that is completely in line with the curved surface of the part to be processed. The shape of the suction cup body 10 is adjusted according to the setting of the machine tool to adapt to the installation requirements and processing space of the machine tool.

[0057] Support bosses 11: A plurality of support bosses 11 arranged in an array are provided on the contoured surface.

[0058] Ventilation groove 12: V-shaped vent grooves 12 are provided between adjacent support bosses 11 on the suction cup body 10 to form vacuum adsorption. One or more vent holes 13 are provided on the surface of part of the vent grooves 12, and the vent holes 13 are connected to the air pipe joint 14 provided outside the suction cup body 10 through the air passage inside the suction cup body 10.

[0059] Sealing ring 15: A hemispherical groove is provided at the edge of the suction cup body 10 that contacts the workpiece to be processed, for accommodating the sealing ring 15.

[0060] Example 3

[0061] like Figure 8 As shown, this embodiment provides a curved surface contoured vacuum suction cup fixture, comprising:

[0062] A plurality of adsorption regions 110 are disposed on the suction cup body 100 , and each of the adsorption regions 110 is not connected to each other.

[0063] Each adsorption area 110 has a contoured surface that is completely in line with the surface to be processed, and its shape is designed according to the machine tool settings. A hemispherical groove is arranged at the edge of each adsorption area 110 that contacts the part to be processed.

[0064] Each adsorption area 110 is provided with a supporting boss, a venting groove and a sealing ring. The configuration of the supporting boss, the venting groove and the sealing ring is similar to that of Embodiments 1 and 2, and will not be repeated here.

[0065] Example 4

[0066] like Fig. 9 As shown, this embodiment provides a curved surface contoured vacuum suction cup fixture, comprising:

[0067] A plurality of adsorption regions 110 are disposed on the suction cup body 100 , and each of the adsorption regions 110 is interconnected.

[0068] Each adsorption area 110 has a contoured surface that is completely in line with the surface to be processed, and its shape is designed according to the machine tool settings. A hemispherical groove is arranged at the edge of each adsorption area 110 that contacts the part to be processed.

[0069] Each adsorption area 110 is provided with a supporting boss, a venting groove and a sealing ring. The configuration of the supporting boss, the venting groove and the sealing ring is similar to that of Embodiments 1 and 2, and will not be repeated here.

[0070] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A curved surface contoured vacuum suction cup fixture, characterized in that: It comprises a suction cup body, which has a contoured curved surface that fits the curved surface of the part to be processed; a hemispherical groove is arranged at the edge of the suction cup body that contacts the part to be processed, for placing a sealing ring; a plurality of supporting bosses are arranged in an array on the contoured curved surface, and V-shaped or hemispherical ventilation grooves are arranged between adjacent supporting bosses.

2. The curved surface contoured vacuum suction cup fixture according to claim 1, characterized in that: The shape of the suction cup body is adjusted according to the setting of the machine tool to adapt to the installation requirements and processing space of the machine tool.

3. The curved surface contoured vacuum suction cup fixture according to claim 1, characterized in that: One or more ventilation holes are arranged on the surface of part of the ventilation grooves, and the ventilation holes are communicated with the air pipe joint arranged outside the suction cup body through the air passage inside the suction cup body.

4. The curved surface contoured vacuum suction cup fixture according to claim 1, characterized in that: The suction cup body is made of a rigid material, and the rigid material includes aluminum alloy, stainless steel and engineering plastic.

5. The curved surface contoured vacuum suction cup fixture according to claim 1, characterized in that: Also included is the sealing ring, which is made of an elastic material including rubber and silicone.

6. A curved surface contoured vacuum suction cup fixture, characterized in that: The invention comprises a suction cup body, on which a plurality of adsorption areas are arranged, each of which has a contoured curved surface that completely fits the curved surface of the part to be processed; a hemispherical groove is arranged at the edge of each adsorption area that contacts the part to be processed, for placing a sealing ring; a plurality of supporting bosses are arranged in an array on the contoured curved surface, and V-shaped or hemispherical ventilation grooves are arranged between adjacent supporting bosses.

7. The curved surface contoured vacuum suction cup fixture according to claim 6, characterized in that: Each adsorption area is not connected.

8. The curved surface contoured vacuum suction cup fixture according to claim 6, characterized in that: Each adsorption area is interconnected.

9. A method for designing a curved surface contoured vacuum suction cup fixture, characterized in that: The following steps are involved: Step 1: According to the surface shape of the part to be processed, use 3D design software to design a contoured surface that fits it perfectly as the shape of the suction cup body; Step 2: Design a V-shaped or hemispherical ventilation groove on the suction cup body to form vacuum adsorption; Step 3: Design a hemispherical groove on the edge where the suction cup body contacts the workpiece to be processed for placing the sealing ring.

10. The method for designing a curved surface contoured vacuum chuck fixture according to claim 9, characterized in that: The V-shaped or hemispherical ventilation groove in step 2 is designed according to the shape of the curved surface and the stress conditions of the part to be processed to optimize the adsorption effect.

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