A robotic grinding fixture for high-voltage switch conductor castings

Abstract

This utility model provides a robotic grinding fixture for high-voltage switch conductor castings. The grinding fixture system mainly comprises three parts: a casting placement table for storing and positioning castings to be ground; a casting transfer table for receiving castings ground at one end and rotating them; and a casting gripper, installed at the end of the robot arm, for gripping and transporting castings from the placement table to the grinding station and the transfer table, and for gripping the reversed castings. These three parts work collaboratively, integrated within the robot workstation, to complete a fully automated process of casting loading, primary grinding, transfer, secondary grinding, and unloading. This achieves precise positioning, stable gripping, efficient transfer, and flexible reversal during the automated casting grinding process.

Description

Technical Field

[0001] This utility model belongs to the field of robotic grinding fixture technology, and relates to a robotic grinding fixture for high-voltage switch conductor castings. Background Technology

[0002] High-voltage switch aluminum alloy conductors require high surface finish. Besides machined surfaces, the entire outer surface of the conductor casting is polished; typically, Ra ≤ 6.3μm is required. The polishing process is the key step affecting surface finish, playing a crucial role in surface quality, dimensional accuracy, and subsequent performance. Current technology uses manual hand-held sanders for polishing. Manual operation has limited productivity, mainly due to: reliance on worker skill and long processing time; inconsistent surface treatment results, mainly due to uneven polishing precision and low appearance consistency; and significant workplace injury and health risks, primarily due to mechanical damage and severe dust pollution.

[0003] Currently, the industry still widely uses traditional manual hand-held operation for grinding complex castings, employing tools such as belt sanders and angle grinders. This existing technology suffers from the following drawbacks: First, production capacity is severely limited; the grinding effect is highly dependent on the operator's skill level and physical condition, resulting in lengthy processes and low production efficiency. Second, product quality consistency is poor; manual operation cannot guarantee consistent grinding force and trajectory, leading to uneven grinding precision, large fluctuations in appearance quality, and high scrap and rework rates. Finally, there are significant safety and occupational health risks; operators directly contact high-speed rotating grinding tools, facing serious mechanical injury risks, and the large amount of metal dust generated during the grinding process can harm the respiratory system, while noise pollution is difficult to control effectively.

[0004] To overcome the drawbacks of manual grinding, industrial robot technology has been introduced into this field. Robotic grinding offers advantages such as precise trajectory, high repeatability, and continuous operation. However, for workpieces with special structures, such as high-voltage switch conductor castings, requiring multi-angle grinding, the application of robots faces new challenges. The core issue is that the robot gripper often obstructs part of the area to be ground when grasping the workpiece. To achieve full coverage grinding of all surfaces, multiple gripping and shape changes are usually required, significantly reducing the cycle time and efficiency of automated production. Some existing automation solutions, such as the positioning fixture disclosed in Chinese utility model patent CN218592686U, focus on reducing positioning errors through movable positioning plugs, but do not solve the process challenge of completing multi-face grinding of complex castings after a single clamping. Another Chinese utility model patent, CN221088397U, discloses a grinding device whose improvements focus on rapid replacement of grinding components and dust removal, but similarly does not address a dedicated tooling system for efficient, seamless mold-changing robotic grinding.

[0005] The use of industrial robots for automated grinding is an inevitable trend. However, the grinding of castings by robots involves complex structures, requires multi-angle operation, and involves different placement states. Ordinary fixtures are difficult to achieve efficient, stable, and non-destructive loading, unloading, and reversing grinding. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a robotic grinding fixture for high-voltage switch conductor castings, thereby creating a safe and efficient production environment, enabling human-machine separation operations, centralized control of dust and noise, and solving problems such as inconsistent surface treatment, poor grinding accuracy, and low production efficiency. This achieves precise positioning, stable clamping, efficient transfer, and flexible reversal in the automated grinding process of castings.

[0007] This utility model is achieved through the following technical solution: A robotic grinding fixture for high-voltage switch conductor castings includes: A casting placement workbench is used to store and position castings to be polished; A casting transfer table is used to receive castings that have been ground at one end and rotate them to change direction. A casting gripper is installed at the end of a robot arm to grip and transport castings from the casting placement table to the grinding station and the casting transfer table, and to grip castings after they have been reversed. The casting placement workbench includes: a platform, a bracket installed on the platform, a casting placement table inclined on the bracket, and a support table fixed on the casting placement table for supporting the castings; The casting transfer platform includes: a transfer platform, a second positioning support pin and a second support column disposed on the transfer platform; The casting gripper includes: a tray for connection to a robotic arm, and clamping clips mounted on the tray.

[0008] A handle is fixedly installed on one side of the platform by bolts; the bracket is connected to the platform and the casting placement table by bolts respectively; the platform is provided with tooling positioning holes for fixing the direction and position of the platform at the loading station.

[0009] The top of the casting placement platform is equipped with multiple positioning support pins to fix the position of the castings when they are placed.

[0010] The casting placement workbench also includes a first support column, which has a threaded structure at its root and is detachably installed on the casting placement workbench. There is a height difference between the first support column and the support surface of the support platform that is perpendicular to the casting placement platform, and this height difference is adapted to the structural height difference of the surface of the supported casting. The first support column and the support platform are symmetrically arranged on both sides of the center line connecting the two positioning support pins, which is used for reversing the placement of the casting.

[0011] The positioning support pin has hollowed-out areas on both sides, providing operating space for the gripper of the casting clamping hand.

[0012] The angle between the casting placement platform and the horizontal plane of the platform is 45°.

[0013] The casting transfer platform also includes positioning holes and positioning slots provided on the transfer platform for precise installation and positioning of the casting transfer platform within the robot workstation.

[0014] The transfer platform is equipped with platform mounting holes for installation within the robot workstation.

[0015] The casting clamping gripper also includes a clamping plate, which is fixed to the front end of the clamping clamp by bolts. Rubber pads are provided on the contact surfaces of the tray and the clamping plate with the casting.

[0016] The clamping clip is installed on the tray through a pin hole and a mounting pin, allowing the clamping clip to rotate ±5° along the mounting pin.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects: The purpose of this invention is to provide a robotic grinding fixture for high-voltage switch conductor castings, enabling precise positioning, stable clamping, efficient transfer, and flexible reversing during the automated grinding process. This grinding fixture system mainly comprises three parts: a casting placement worktable, a casting transfer table, and a casting gripper. These three components work collaboratively, integrated within a robotic workstation, to complete the fully automated process of casting loading, primary grinding, reversing, secondary grinding, and unloading. The aim of this fixture design is to upgrade the manual grinding process of a certain conductor to robotic grinding.

[0018] Furthermore, the grinding fixture improves both capacity and efficiency. Compared to the original manual grinding of a single workpiece, which takes an average of about 20 minutes and requires frequent stops for adjustment, the automatic fixture, through preset programs and high-speed grinding heads, can reduce the processing time of a single workpiece to 5 minutes, significantly improving cycle stability.

[0019] Furthermore, this grinding fixture produces castings with high quality consistency. Manual grinding, influenced by worker experience, exhibits accuracy fluctuations of approximately ±0.3mm. The automated fixture, using a CNC system to control the grinding trajectory and coupled with real-time laser ranging calibration, maintains accuracy within ±0.1mm, meeting the demands of high-precision surface treatment. Simultaneously, manual operation easily leads to uneven surface roughness (Ra value fluctuation range of 1.6-6.3μm). The automated fixture, through constant force grinding technology and standardized parameter settings, can stably control the Ra value below 3.2μm, achieving a workpiece appearance consistency of over 99%.

[0020] Furthermore, the safety of the grinding fixture during the processing is improved. Manual grinding faces mechanical injury risks such as belt breakage and hand crushing. The automated fixture enables robotic grinding of the casting, isolating the robot's work area from personnel and preventing work-related accidents. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the casting placement workbench structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the casting transfer platform structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the casting clamping gripper structure of this utility model.

[0025] Figure 4 This describes the working state of the casting on the casting placement workbench of this utility model.

[0026] Figure 5 This refers to the working state of the casting in the casting turntable of this utility model.

[0027] Figure 6 This refers to the working state of the casting clamping gripper in this utility model.

[0028] The components include: platform 1-1, handle 1-2, bracket 1-3, casting placement platform 1-4, first support column 1-5, first positioning support pin 1-6, support platform 1-7, tooling positioning hole 1-8, transfer platform 2-1, second positioning support pin 2-2, second support column 2-3, platform positioning hole 2-4, platform positioning groove 2-5, platform mounting hole 2-6, clamping clamp 3-1, clamping plate 3-2, rubber pad 3-3, tray 3-4, and mounting pin hole 3-5. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] The purpose of a robotic grinding fixture for high-voltage switch conductor castings is to enable a certain conductor casting to be better positioned on the worktable, so that the robotic arm can grasp it, change its direction, grind and polish it, and make the conductor surface meet the performance requirements.

[0031] This fixture only requires robot programming to set a fixed program, enabling the robotic arm to automatically grasp, grind, polish, and turn the casting, and then put the casting back onto the fixture after completion.

[0032] Following the above technical solutions, such as Figures 1 to 6 As shown in the figure, this embodiment provides an automatic conductor polishing fixture and a method for polishing the conductor under robot polishing conditions.

[0033] This patent discloses a robotic grinding fixture for high-voltage switch conductor castings, including... like Figure 1 As shown, the casting placement table is used to store and position the castings to be polished; like Figure 2 As shown, a casting turntable is used to receive castings that have been ground at one end and rotate them to change direction. like Figure 3As shown, a casting gripper is installed at the end of the robot arm and is used to grab and transport the castings on the casting placement table to the grinding station and the casting transfer table, and to grab the castings after they have been reversed. The casting placement workbench, casting transfer table, and casting clamping gripper are configured in a coordinated manner to realize the automated process of casting loading, primary grinding, transfer, secondary grinding, and unloading.

[0034] like Figure 1 As shown, the casting placement workbench is located at the loading station of the robot workstation. It is used to store castings to be polished in batches and to provide precise positioning for gripping.

[0035] Includes platform 1-1: main substrate.

[0036] Handle 1-2: Connected to platform 1-1 by bolts, making it easy for operators to move the entire workbench.

[0037] Support 1-3: Connects platform 1-1 to casting placement platform 1-4 by bolts, so that the latter forms a 45° angle with the horizontal platform. This angle is conducive to the robot gripper approaching and gripping the casting in the best posture.

[0038] Casting placement platform 1-4: core support plate, designed with various positioning and support structures.

[0039] The first positioning support pin 1-6 is fixed to the casting placement table 1-4 by bolts and is used for radial positioning of the casting. Its two sides are designed with a hollowed-out shape to provide space for the gripper's claws and ensure smooth and interference-free gripping action.

[0040] Support platform 1-7: Fixed to casting placement platform 1-4 by bolts, used to support the bottom surface of the casting, keep the casting parallel to the placement platform, and ensure consistent gripping position each time.

[0041] First support column 1-5: The root has a threaded structure and is directly screwed into the casting placement platform 1-4. There is a preset height difference between it and support platform 1-7, which matches the surface structure height of the casting in another state (A-2).

[0042] The first support column 1-5 and the support platform 1-7 are symmetrically distributed on both sides of the center line of the two first positioning support pins 1-6, thereby realizing the reversible placement and support of castings in two different states, A-1 and A-2, on the same workbench.

[0043] Tooling positioning holes 1-8: Used to accurately position and fix the entire platform 1-1 on the loading station of the robot workstation to ensure repeatability positioning accuracy.

[0044] like Figure 2As shown, a casting transfer platform is set inside the robot's working area. It is used for the transfer and 180° reversal of the casting after one end has been polished.

[0045] Transfer station 2-1: The main base plate of the transfer station.

[0046] The second positioning support pin 2-2 is connected to the top of the transfer table 2-1 by a screw and is used to fix the position of the casting placed on it.

[0047] The second support column 2-3 has a threaded lower part that connects directly to the turntable 2-1. Its top height is precisely calculated to support the casting and keep it parallel to the turntable 2-1, ensuring the stability of the gripping after reversal.

[0048] Platform positioning holes 2-4 and 2-5 platform positioning slots: These two work together to perform precise two-dimensional positioning of the transfer station 2-1 within the robot workstation, ensuring the absolute correctness of its installation position and orientation.

[0049] Platform mounting holes 2-6: used to finally fasten the transfer station to the workstation foundation with bolts.

[0050] Workflow: The robotic arm places the casting with one end already polished (e.g., state C-1) onto the transfer table (changing to state B-1) → The transfer table is rotated 180° by an external drive mechanism → The robotic arm re-grabs the other end of the casting (changing to state C-11) and polishes the other end.

[0051] like Figure 3 As shown, the casting gripper is mounted on the sixth axis flange of the robot and is an end effector that directly performs gripping, handling, and grinding actions.

[0052] Clamping clamp 3-1: The core gripper component, connected to tray 3-4 via a pin. This design allows it to rotate ±5° around the pin, creating a floating clamping effect that adapts to minute deviations in the casting, better enveloping and gripping the casting, and avoiding rigid impacts.

[0053] Pallet 3-4: The main frame of the gripper, which is directly connected to the robot wrist flange by threads, and can rotate at any angle with the robot to meet the requirements of grinding castings in different positions.

[0054] Mounting pin hole 3-5: Connects to the piston rod of the robot's external hydraulic arm (or cylinder). The extension and retraction of the hydraulic arm drives the clamping clamp 3-1 to rotate around the pin shaft, thereby achieving the clamping and releasing actions.

[0055] Clamping disc 3-2 and rubber pad 3-3: The rubber pad 3-3 is bolted to the contact surface between the clamping disc 3-2 and the tray 3-4 and the casting, and is used to protect the surface of the casting and prevent it from being pinched.

[0056] The bottom platform of the casting placement workbench has a rectangular structure. Platform 1-1 has tooling positioning holes 1-8 for positioning with the robot's equipment. The handles 1-2 around the perimeter are installed on platform 1-1 with bolts. The positioning pin, support platform 1-7, first support column 1-5 and casting placement platform 1-4 are installed with bolts. The casting placement platform 1-4 and platform 1-1 are connected by bracket 1-3 and fixed with bolts.

[0057] The lower platform of the casting transfer table has a square structure. The transfer table 2-1 has platform positioning holes 2-4 for positioning with the equipment. The lower part of the platform has a notch. The second positioning support pin 2-2 and the second support column 2-3 are fixed to the transfer table 2-1 with bolts.

[0058] The lower tray 3-4 of the casting gripper is fixed to the robot arm with bolts. A rubber pad 3-3 is installed on the part of the tray 3-4 that contacts the casting and is installed with bolts. The clamping clamp 3-1 is connected to the robot arm and the tray 3-4 by mounting pin holes 3-5. The clamping plate 3-2 is fixed to the front end of the clamping clamp 3-1 with bolts. The rubber pad 3-3 is fixed to the working surface of the clamping plate 3-2 with bolts.

[0059] The main material is QT450-10, which is made by casting blanks and machining. Other steel materials can also be selected and machined.

[0060] Example 1 like Figure 4As shown, the casting placement workbench includes a platform 1-1, a handle 1-2 connected to the platform 1-1 by bolts, and the handle 1-2 is used for moving the castings. A bracket 1-3 connects the platform 1-1 to the casting placement table 1-4 by bolts, making the casting placement table 1-4 form a 45° angle with the platform 1-1. The first positioning support pin 1-6 on the upper part of the casting placement table 1-4 has open sides, allowing the casting gripper to better grip casting A-1. The first positioning support pin 1-6 is connected to the casting placement table 1-4 by bolts for fixing the position of the casting during placement. A support platform 1-7 is fixed to the casting placement table by bolts. On 1-4, the support is used to support the casting, keeping it parallel to the 1-4 casting placement platform, which facilitates the robotic arm's gripping of the casting. The first support column 1-5 has a threaded structure at its base and is directly installed on the 1-4 casting placement platform. There is a height difference between the first support column 1-5 and the support platform 1-7, perpendicular to the 1-4 casting placement platform, which is consistent with the height difference of the casting surface structure. The positions of the first support column 1-5 and the support platform 1-7 are symmetrical on both sides of the center line of the two 1-6 casting positioning support pins, used for reversing the placement of castings (such as casting A-2). The tooling positioning hole 1-8 is used to fix the direction and position of platform 1-1 at the loading station. When grinding castings A-1 and A-2 in the same batch, only one state is used, and the corresponding program is called according to the casting state.

[0061] like Figure 5 As shown, the casting transfer platform includes a transfer platform 2-1. A second positioning support pin 2-2 is connected to the top of the transfer platform 2-1 via a screw. The second positioning support pin 2-2 is used to fix the position of the casting on the casting transfer platform. The lower part of the second support column 2-3 is threaded and directly connected to the transfer platform 2-1 to ensure that the casting remains parallel to the transfer platform 2-1. The platform positioning hole 2-4 is a positioning hole for installation within the robot workstation, used to determine the orientation of the casting transfer platform during installation in the equipment room. The platform positioning groove 2-5 and the platform positioning hole 2-4 accurately position the transfer platform 2-1 within the robot workstation. The platform mounting hole 2-6 is used for installation of the transfer platform 2-1 within the robot workstation. After one end of the casting is ground, the robot arm places the casting on the casting transfer platform. The casting transfer platform rotates 180°, and the robot arm picks up the casting again for grinding.

[0062] like Figure 6As shown, the casting gripper consists of a clamping clamp 3-1 mounted to a tray 3-4 via a pin hole, allowing the clamping clamp 3-1 to rotate ±5° along the mounting pin for better gripping of the casting. The tray 3-4 is threadedly mounted to the robotic arm, enabling the gripper to rotate with the robotic arm for grinding different positions of the casting. The clamping clamp 3-1 is connected to the hydraulic arm of the robotic arm via a mounting pin hole 3-5. During the extension and retraction of the hydraulic arm, the clamping clamp 3-1 and the tray 3-4 rotate, clamping and releasing the casting. A rubber pad 3-3 is bolted to the clamping plate 3-2 and the tray 3-4 to protect the casting.

[0063] The working process of this utility model is as follows: like Figures 4 to 6 As shown, a casting placement table, a casting transfer table, and a casting gripper are installed on the loading and transfer sections of the robot worktable and at the front end of the robotic arm. The castings are placed on the placement table in casting state A-1 or A-2 (only one state is selected for grinding within the same batch). The casting gripper picks up casting A-1 or A-2 and grinds it, resulting in a casting state similar to casting state C-1 of A-1 and / or casting state C-2 of A-2. After grinding of the front end of castings in states C-1 and / or C-2, the robotic arm places the castings on the casting transfer table in casting state B-1 and / or B-2. The casting transfer table rotates 180°. Next, the casting gripper picks up the other end of the casting. At this point, the casting is in a C-11 and / or C-21 state for grinding. After grinding, the casting gripper places the casting onto the conveyor belt, which then sends the casting out. The casting gripper then sequentially picks up castings from the worktable according to the programmed sequence and grinds them according to the above grinding process. Once all castings on the worktable have been ground, the worktable is moved out of the robot's grinding chamber by the transfer wheels. The operator then repositions the castings to be ground, and this cycle repeats.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. When a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are within the protection scope of this utility model's technical solution.

Claims

1. A robotic grinding fixture for high-voltage switch conductor castings, characterized in that, include: A casting placement workbench is used to store and position castings to be polished; A casting transfer table is used to receive castings that have been ground at one end and rotate them to change direction. A casting gripper is installed at the end of a robot arm to grip and transport castings from the casting placement table to the grinding station and the casting transfer table, and to grip castings after they have been reversed. The casting placement workbench includes: a platform (1-1), a bracket (1-3) installed on the platform (1-1), a casting placement table (1-4) inclinedly set on the bracket (1-3), and a support table (1-7) fixed on the casting placement table (1-4) for supporting the casting; The casting transfer platform includes: a transfer platform (2-1), a second positioning support pin (2-2) and a second support column (2-3) disposed on the transfer platform (2-1); The casting gripper includes: a tray (3-4) for connection with a robotic arm, and a clamping clamp (3-1) mounted on the tray (3-4).

2. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, A handle (1-2) is fixedly installed on one side of the platform (1-1) by bolts; the bracket (1-3) is connected to the platform (1-1) and the casting placement table (1-4) by bolts respectively; the platform (1-1) is provided with tooling positioning holes (1-8) for fixing the direction and position of the platform (1-1) at the loading station.

3. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The top of the casting placement platform (1-4) is provided with multiple positioning support pins (1-6) for fixing the position of the casting when it is placed.

4. The robotic grinding fixture for high-voltage switch conductor castings according to claim 3, characterized in that, The casting placement workbench also includes a first support column (1-5), which has a threaded structure at its root and is detachably installed on the casting placement table (1-4); There is a height difference between the first support column (1-5) and the support surface of the support platform (1-7) that is perpendicular to the casting placement platform (1-4), and this height difference is adapted to the structural height difference of the surface of the supported casting. The first support column (1-5) and the support platform (1-7) are positioned symmetrically on both sides of the center line connecting the two positioning support pins (1-6), for the purpose of reversing the placement of the casting.

5. The robotic grinding fixture for high-voltage switch conductor castings according to claim 3, characterized in that, The positioning support pin (1-6) has hollowed-out areas on both sides to provide operating space for the gripper of the casting clamping hand.

6. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The angle between the casting placement platform (1-4) and the horizontal plane of the platform (1-1) is 45°.

7. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The casting transfer platform also includes positioning holes (2-4) and positioning grooves (2-5) provided on the transfer platform (2-1) for precise installation and positioning of the casting transfer platform within the robot workstation.

8. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The transfer station (2-1) is provided with platform mounting holes (2-6) for installation in the robot workstation.

9. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The casting gripper also includes a clamping disc (3-2), which is fixed to the front end of the clamping clamp (3-1) by bolts. A rubber pad (3-3) is provided on the contact surface between the tray (3-4) or the clamping disc (3-2) and the casting.

10. The robotic grinding fixture for high-voltage switch conductor castings according to claim 1, characterized in that, The clamping clip (3-1) is installed with the tray (3-4) through a pin hole and a mounting pin, so that the clamping clip (3-1) can rotate ±5° along the mounting pin.

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