A flexible profiling fixture for complex curved surface electrochemical machining

Abstract

A flexible profiling fixture for complex curved surface electrolytic machining, comprising a base, a leather claw fixedly installed on the base, a framework embedded in the inside of the leather claw, a telescopic leather bag inserted into the upper part of the leather claw and the framework, a connecting pipe sealed to the tail of the telescopic leather bag, and the inside space of the telescopic leather bag and the connecting pipe being communicated. The base comprises a seat body, and a fixed block fixedly connected to the outer periphery of the seat body. The telescopic leather bag is contracted, so that the framework is bent and opened upward, air is injected into the telescopic leather bag and the connecting pipe by using an air pump, the telescopic leather bag is elongated, the framework is bent inward to clamp the target, and the workpiece is conveniently clamped.

Description

Technical Field

[0001] This utility model belongs to the field of electrolytic machining technology, and in particular relates to a flexible contour jig for electrolytic machining of complex curved surfaces. Background Technology

[0002] Electrolytic machining is a special machining technology that utilizes the principle of electrochemical anodic dissolution of metal in an electrolyte to achieve precision forming or surface treatment of workpieces. Its core device consists of the workpiece to be processed as the anode, a tool electrode as the cathode, and a circulating electrolyte (such as sodium chloride or sodium nitrate solution). During machining, a certain voltage and current are applied between the two electrodes. Metal atoms on the surface of the workpiece dissolve into ions and enter the electrolyte due to the electrolytic reaction. At the same time, the tool electrode is slowly fed according to a preset shape, so that the workpiece surface gradually replicates the reverse contour of the tool cathode, ultimately obtaining a part with the required size and precision.

[0003] Because some electrolytic workpieces have complex curved surfaces, using rigid clamps to clamp them can easily damage the workpiece surface, while insufficient clamping force will prevent them from being clamped. This results in the low practicality of using rigid clamps to hold complex curved electrolytically machined parts.

[0004] To address these issues, we propose a flexible contour jig for electrolytic machining of complex curved surfaces. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low practicality of rigid fixtures for gripping complex curved surface electrolytic machining parts, and to propose a flexible contouring fixture for complex curved surface electrolytic machining.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A flexible contour-following fixture for electrolytic machining of complex curved surfaces includes a base on which grippers are fixedly mounted. A skeleton is embedded inside each gripper. A telescopic bladder is inserted into the upper part of the grippers and skeleton. A connecting tube is sealed at the tail of the telescopic bladder, and the internal spaces of the telescopic bladder and the connecting tube are interconnected. An external air pump draws gas from inside the telescopic bladder and connecting tube, causing the bladder to contract and the skeleton to bend upwards and open. The air pump then injects air into the telescopic bladder and connecting tube, causing the bladder to extend and the skeleton to bend inwards to clamp the target, facilitating flexible workpiece clamping.

[0007] Preferably, the base includes a seat body, and a fixing block is fixedly connected to the outer periphery of the seat body. The fixing block is used to fix the root of the claw.

[0008] Preferably, the gripper includes a gripper body, a clamping block is fixedly connected to the outside of the gripper body, and the root of the gripper body is fixedly installed between the fixing block and the base. The clamping block increases the range of flexible deformation for gripping the workpiece.

[0009] Preferably, the telescopic bladder includes a shell, the base of which is fixedly connected to a first connecting nozzle, and the shell is fixedly inserted into the upper part of the claw body. When a negative pressure is formed inside the shell, the shell contracts, pulling the upper part of the claw body. At the same time, the lower part of the clamping block is supported by the skeleton, causing the claw body to curl away from the clamping block and vice versa, thus facilitating control of the claw's curling.

[0010] Preferably, the connecting pipe includes a pipe body, a sleeve is fixedly connected to the pipe body, the internal spaces of the pipe body and the sleeve are in communication, the first mating nozzle is fixedly inserted into the sleeve, and the internal spaces of the first mating nozzle, the sleeve, and the pipe body are in communication, and a second mating nozzle is fixedly connected to the lower end of the pipe body. The second mating nozzle is connected to an external air pump pipeline.

[0011] Preferably, the skeleton includes a frame, the upper end of which is fixedly connected to a collar. The collar is fitted onto the outer shell, and the collar and frame are embedded within the claw body. The frame supports the claw body within the claw body, allowing the claw to only curl and not retract.

[0012] In summary, the technical effects and advantages of this utility model are as follows: 1. An external air pump is used to draw gas from the inside of the telescopic bladder and connecting pipe, causing the telescopic bladder to contract and the frame to bend upward and open. Air is then injected into the telescopic bladder and connecting pipe by the air pump, causing the telescopic bladder to extend and the frame to bend inward and clamp the target, facilitating flexible clamping of the workpiece.

[0013] 2. When a negative pressure is formed inside the skin, the skin contracts, pulling the upper part of the claw body through the skin. At the same time, the skeleton supports the lower part of the clamping block, causing the claw body to curl away from the clamping block and vice versa, making it easy to control the curling of the claw. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the base structure of this utility model; Figure 3 This is a schematic diagram of the leather claw structure of this utility model; Figure 4 This is a schematic diagram of the telescopic bladder structure of this utility model; Figure 5 This is a schematic diagram of the connecting pipe structure of this utility model; Figure 6 This is a schematic diagram of the skeleton structure of this utility model.

[0015] In the diagram: 2. Base; 3. Leather claw; 4. Telescopic bladder; 5. Connecting pipe; 6. Frame; 21. Seat body; 22. Fixing block; 31. Claw body; 32. Clamping block; 41. First docking nozzle; 42. Sheath; 51. Pipe body; 52. Sleeve; 53. Second docking nozzle; 61. Collar; 62. Frame. Detailed Implementation

[0016] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0017] like Figure 1 As shown, a flexible contour jig for electrolytic machining of complex curved surfaces includes a base 2, on which a gripper 3 is fixedly mounted. A frame 6 is embedded inside the gripper 3. A telescopic bladder 4 is inserted into the upper part of the gripper 3 and the frame 6. A connecting tube 5 is sealed at the tail of the telescopic bladder 4, and the internal spaces of the telescopic bladder 4 and the connecting tube 5 are interconnected. An external air pump is used to draw gas from inside the telescopic bladder 4 and the connecting tube 5, causing the telescopic bladder 4 to contract, thereby causing the frame 6 to bend upwards and open. Air is then injected into the telescopic bladder 4 and the connecting tube 5 using the air pump, causing the telescopic bladder 4 to extend, and the frame 6 to bend inwards and clamp the target.

[0018] like Figure 1 and 2 As shown, the base 2 includes a base body 21, and a fixing block 22 is fixedly connected to the outer periphery of the base body 21. The fixing block 22 is used to fix the root of the claw 3.

[0019] like Figure 1 , 2 As shown in Figure 3, the gripper 3 includes a gripper body 31, with a clamping block 32 fixedly connected to the outside of the gripper body 31. The root of the gripper body 31 is fixedly installed between the fixing block 22 and the base 21. The clamping block 32 is used to increase the range of flexible deformation for gripping between the gripper 3 and the workpiece.

[0020] like Figure 1 , 3 As shown in Figure 4, the telescopic bladder 4 includes a shell 42, with a first connecting nozzle 41 fixedly connected to the base of the shell 42. The shell 42 is fixedly inserted into the upper part of the claw body 31. When a negative pressure is formed inside the shell 42, the shell 42 contracts, pulling the upper part of the claw body 31. At the same time, the frame 6 supports the lower part of the clamping block 32, causing the claw body 31 to curl away from the clamping block 32, and vice versa.

[0021] like Figure 1 , 4As shown in Figure 5, the connecting pipe 5 includes a pipe body 51, a sleeve 52 fixedly connected to the pipe body 51, and the internal spaces of the pipe body 51 and the sleeve 52 are connected. A first mating nozzle 41 is fixedly inserted into the sleeve 52, and the internal spaces of the first mating nozzle 41, the sleeve 52, and the pipe body 51 are connected. A second mating nozzle 53 is fixedly connected to the lower end of the pipe body 51. The second mating nozzle 53 is connected to an external air pump pipe.

[0022] like Figure 1 , 3 As shown in Figures 4 and 6, the skeleton 6 includes a frame 62, with a collar 61 fixedly connected to the upper end of the frame 62. The collar 61 is fitted onto the shell 42, and the collar 61 and the frame 62 are embedded in the claw body 31. The frame 62 is used to support the claw body 31, so that the claw body 31 can only curl and cannot retract.

[0023] Working principle: The external air pump draws air from the inside of the telescopic bladder 4 and connecting pipe 5, causing the telescopic bladder 4 to contract, thereby causing the frame 6 to bend upward and open. The air pump injects air into the telescopic bladder 4 and connecting pipe 5, causing the telescopic bladder 4 to extend, and causing the frame 6 to bend inward and clamp the target.

[0024] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0025] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A flexible contour jig for electrolytic machining of complex curved surfaces, characterized in that: Includes a base (2), on which a claw (3) is fixedly installed. A skeleton (6) is fixedly embedded inside the claw (3). A telescopic bladder (4) is inserted into the upper part of the claw (3) and the skeleton (6). A connecting tube (5) is sealed at the tail of the telescopic bladder (4). The internal spaces of the telescopic bladder (4) and the connecting tube (5) are connected.

2. The flexible contour jig for electrolytic machining of complex curved surfaces according to claim 1, characterized in that: The base (2) includes a seat body (21), and a fixing block (22) is fixedly connected to the outer periphery of the seat body (21).

3. A flexible contour jig for electrolytic machining of complex curved surfaces according to claim 2, characterized in that: The claw (3) includes a claw body (31), and a clamping block (32) is fixedly connected to the outside of the claw body (31). The root of the claw body (31) is fixedly installed between the fixing block (22) and the seat (21).

4. A flexible contour jig for electrolytic machining of complex curved surfaces according to claim 3, characterized in that: The telescopic bladder (4) includes a shell (42), the root of which is fixedly connected to a first docking nozzle (41), and the shell (42) is fixedly inserted into the upper part of the claw body (31).

5. A flexible contour jig for electrolytic machining of complex curved surfaces according to claim 4, characterized in that: The connecting pipe (5) includes a pipe body (51), a sleeve (52) is fixedly connected to the pipe body (51), the internal spaces of the pipe body (51) and the sleeve (52) are connected, the first docking nozzle (41) is fixedly inserted into the sleeve (52), and the internal spaces of the first docking nozzle (41), the sleeve (52) and the pipe body (51) are connected, and the lower end of the pipe body (51) is fixedly connected to a second docking nozzle (53).

6. A flexible contour jig for electrolytic machining of complex curved surfaces according to claim 4, characterized in that: The skeleton (6) includes a frame (62), and a collar (61) is fixedly connected to the upper end of the frame (62). The collar (61) is fitted onto the shell (42), and the collar (61) and the frame (62) are embedded in the claw body (31).

Images