An elastic clamp for an electrical discharge machine

Abstract

This utility model discloses an elastic clamp for an EDM (Electrical Discharge Machining) device. It includes: a clamp body for holding a sealing end cap to be processed; a locking mechanism for gripping the sealing end cap; a guide post located on the top edge of the clamp body; a compression spring sleeved on the guide post for supporting a positioning plate; a positioning plate for inserting the positioning ears of the sealing end cap; a guide hole on the edge of the positioning plate for inserting the guide post; a lever mounted on the positioning plate and capable of pressing the positioning plate to engage with the slot of the guide post, thus fixing the height of the positioning plate; and an eight-cavity motor located on the positioning plate and sleeved on the outside of the positioning ears of the sealing end cap to be processed, for clearing the corners of the positioning ears. These devices enable automated clamping and precise positioning of the sealing end cap to be processed, are easy to operate, and the eight-cavity motor of the EDM device can complete the corner clearing operation of multiple positioning ears of the sealing end cap to be processed.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to an elastic clamp for an electrical discharge machining (EDM) device. Background Technology

[0002] In the field of underwater vehicle manufacturing, the vehicle hull typically has various sealing seats, and its end caps have locating lugs. The machining of these locating lugs is usually done by CNC milling machines, but the corner clearing work currently relies mainly on manual operation by fitters, which presents the following problems:

[0003] 1. High processing difficulty and low efficiency: Manual corner cleaning requires skilled technicians, and the process is prone to low efficiency due to human factors.

[0004] 2. Difficulty in guaranteeing dimensional accuracy: Manual corner clearing can easily lead to processing deviations, affecting the assembly accuracy of the product.

[0005] Most existing fixtures lack precise positioning capabilities for the sealing seat end cap, and the clearing of the positioning ears on the sealing seat end cap is inefficient, difficult, and inaccurate. Currently, no effective solution has been proposed to address these problems in the existing technology. Utility Model Content

[0006] This utility model provides an elastic clamp for an electrical discharge machine to solve the problems in the prior art where most clamps lack precise positioning function for the end cap of the sealing seat, and the corner clearing efficiency, difficulty and low accuracy of the positioning ears of the end cap of the sealing seat are low.

[0007] To achieve the above objectives, this utility model provides an elastic clamp for an electrical discharge machining (EDM) device. The elastic clamp includes: a clamp body with a first positioning hole in the center for placing a sealing end cap to be processed; two locking mechanisms, respectively installed on both sides of the clamp body, for gripping the sealing end cap to be processed; a guide post located at the top edge of the clamp body; and a compression spring sleeved on the guide post for supporting the clamp. Positioning plate; positioning plate, the positioning plate having a second positioning hole in the middle for the positioning ear of the sealing seat end cap to be processed to pass through; the positioning plate having a guide hole on its edge for the guide post to pass through; a paddle, the paddle being mounted on the positioning plate and capable of pressing the positioning plate to engage the paddle in the slot of the guide post to fix the height of the positioning plate; an eight-cavity motor, mounted on the positioning plate and sleeved on the positioning ear of the sealing seat end cap to be processed, for clearing the corners of the positioning ear of the sealing seat end cap to be processed.

[0008] Optionally, the locking mechanism includes: a stop block, a baffle, a locking pin, and a locking block; one side of the locking block is arc-shaped and can pass through a locking square groove on one side of the fixture body to cooperate with the outer surface of the sealing seat end cap to be processed; the baffle and the stop block are fixed sequentially on the outer surface of one side of the fixture body; the locking pin is used to pass through the baffle to fix or release the locking block; the stop block is provided with a through hole for a wrench to be inserted and rotated to bring the locking pin close to the stop block, and the locking block is pushed out by the resistance of the stop block, thereby making the locking block hold the sealing seat end cap to be processed.

[0009] Optionally, the locking mechanism further includes: a locking screw; the baffle and the stop are sequentially fixed to the outer surface of one side of the fixture body by the locking screw.

[0010] Optionally, a conversion sleeve is provided on the periphery of the sealing seat end cap to be processed, and is located inside the first positioning hole.

[0011] Optionally, the guide post is fixed to the top edge of the fixture body by positioning screws; multiple guide posts are provided, and the multiple guide posts are spaced apart.

[0012] Optionally, one of the guide posts is provided with a slot, and the paddle is mounted on the positioning plate and close to the guide post with the slot; when the positioning plate is pressed through the guide post and the paddle is moved to engage in the slot of the guide post, the height of the positioning plate is fixed.

[0013] Optionally, multiple compression springs are provided, and each compression spring corresponds to one of the multiple guide posts.

[0014] Optionally, the paddle is fixed to the positioning plate by fixing screws.

[0015] Optionally, a gasket is provided between the paddle and the positioning plate.

[0016] Optionally, the fixture body is made of stainless steel; the fixture body has a stepped structure.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides an elastic clamp for an EDM (Electrical Discharge Machining) machine, comprising: a clamp body, a locking mechanism, a guide post, a compression spring, a positioning plate, a lever, and an eight-cavity motor. These components enable automated clamping and precise positioning of the sealing seat end cap to be processed, offering convenient operation. Furthermore, the eight-cavity motor of the EDM machine can complete the corner clearing operation of multiple positioning ears on the sealing seat end cap in one operation, improving processing speed. By changing the conversion sleeve, it can adapt to the processing of various sealing seat end caps, demonstrating strong applicability. Attached Figure Description

[0019] Figure 1 This is a perspective view of an elastic clamp used in an electrical discharge machine according to an embodiment of this utility model;

[0020] Figure 2 This is a perspective view of an electrical discharge machine after the elastic clamp is assembled with the sealing seat end cap to be processed, according to an embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram of the locking mechanism provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the fixture body provided in this embodiment of the utility model.

[0023] Symbol explanation:

[0024] Fixture body-1, locking mechanism-2, guide post-3, compression spring-4, positioning plate-5, paddle-6, eight-cavity motor-7, end cap of the sealing seat to be processed-8, positioning screw-9, fixing screw-10, stop block-21, baffle-22, locking pin-23, locking block-24, locking screw-25, slot-31, positioning ear of the end cap of the sealing seat to be processed-81. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Figure 1 This is a perspective view of an elastic clamp used in an electrical discharge machine according to an embodiment of this utility model; Figure 2 This is a perspective view of an electrical discharge machine according to an embodiment of the present invention, showing the elastic clamp assembling the sealing seat end cap 8 to be processed; as shown. Figures 1-2 As shown,

[0027] A flexible clamp for an electrical discharge machine includes:

[0028] 1. Fixture body 1, wherein the middle part of the fixture body 1 is provided with a first positioning hole for placing the sealing seat end cap 8 to be processed;

[0029] Figure 4 This is a schematic diagram of the structure of the clamp body 1 provided in this embodiment of the utility model, as shown below. Figure 4As shown, the fixture body 1 primarily serves to support, fix, position, and clamp the sealing seat end cap 8 to be processed. Its rational design directly determines the stability and machining accuracy of the fixture. A key feature of the fixture body 1 is the first positioning hole in the center, used to place the sealing seat end cap 8 to be processed, ensuring that the sealing seat end cap 8 is in the correct position during corner clearing processing, thus improving machining accuracy and stability. The structure of the first positioning hole is integrally formed with the fixture body 1, ensuring machining accuracy and avoiding tolerance errors caused by later installation.

[0030] The fixture body 1 is made of stainless steel; the fixture body 1 has a stepped structure.

[0031] The fixture body 1 is made of high-strength stainless steel to ensure its wear resistance, corrosion resistance, and high strength. The use of stainless steel not only ensures that it will not deform during long-term use but also resists the heat and electro-erosion caused by electrical discharge machining, thereby extending the service life of the fixture body 1.

[0032] The fixture body 1 has a stepped structure, which enhances structural rigidity and improves the overall strength of the fixture body 1 while ensuring moderate weight, reducing vibration during machining and improving machining accuracy. The stepped design facilitates the installation of various fasteners, such as locking mechanisms 2 and guide posts 3, and can also provide multi-level positioning support for sealing seat end caps of different sizes.

[0033] 2. Locking mechanism 2, two locking mechanisms 2 are provided, respectively installed on both sides of the fixture body 1, for gripping the sealing seat end cap 8 to be processed;

[0034] The locking mechanism 2 is mainly used to hold the end cap 8 of the sealing seat to be processed, ensuring that the end cap 8 of the sealing seat to be processed remains stable during the processing and does not shift or loosen. Since the corner clearing process requires high dimensional accuracy, the locking mechanism 2 must provide sufficient clamping force, and at the same time be easy to operate and stable and reliable.

[0035] The locking mechanism 2 of this utility model is arranged symmetrically on both sides and is installed on both sides of the fixture body 1, so that the sealing seat end cap 8 to be processed is subjected to uniform force, improving the clamping stability, and avoiding tilting or displacement problems that may be caused by clamping on one side.

[0036] Figure 3 This is a schematic diagram of the locking mechanism 2 provided in this embodiment of the utility model; as shown Figure 3 As shown, the locking mechanism 2 includes: a stop 21, a baffle 22, a locking pin 23, and a locking block 24;

[0037] The locking block 24 has an arc shape on one side and can pass through the locking square groove on one side of the fixture body 1 to cooperate with the outer surface of the sealing seat end cap 8 to be processed.

[0038] The baffle 22 and the stop block 21 are fixed sequentially on the outer surface of one side of the fixture body 1;

[0039] The locking pin 23 is used to pass through the baffle 22 to fix or release the locking block 24;

[0040] The stop block 21 is provided with a through hole for inserting a wrench and rotating the locking pin 23 so that the locking pin 23 approaches the stop block 21 and the resistance of the stop block 21 pushes out the locking block 24, thereby making the locking block 24 hold the sealing seat end cap 8 to be processed.

[0041] The locking mechanism 2 further includes: a locking screw 25;

[0042] The baffle 22 and the stop block 21 are fixed to the outer surface of one side of the fixture body 1 by the locking screws 25 in sequence.

[0043] Specifically, one side of the locking block 24 is arc-shaped. This design allows it to better fit the outer surface of the sealing seat end cap 8 to be processed, making the clamping more stable and preventing local stress concentration that could cause deformation or damage to the sealing seat end cap 8. The locking block 24 passes through a locking square groove on one side of the fixture body 1, ensuring that it can slide along the locking square groove to clamp or release the sealing seat end cap 8 to be processed.

[0044] The stop block 21 has a U-shaped structure, and the baffle plate 22 has a flat plate structure. Locking screw holes 25 are provided on both sides of the stop block 21 and the baffle plate 22, respectively for the locking screws 25 to pass through and fix the two to the outer surface of one side of the fixture body 1. The stop block 21 and the baffle plate 22 can block the locking slot.

[0045] The baffle 22 has a threaded hole in the middle, which is used to allow the locking pin 23 to pass through to fix or release the locking block 24;

[0046] The stop block 21 has a through hole in the middle, which allows the operator to insert a wrench into the through hole and unscrew the locking pin 23 in the opposite direction so that the locking pin 23 is close to the stop block 21. The resistance of the stop block 21 pushes the locking block 24 out (i.e., the locking pin 23 exerts a force on the locking block 24), thereby making the locking block 24 hold the sealing seat end cap 8 to be processed.

[0047] It should be noted that when not in operation initially, the locking block 24 does not hold the sealing seat end cover 8 to be processed. At this time, the locking pin 23 is locked in the locking block 24. If you want the locking block 24 to hold the sealing seat end cover 8 to be processed, you only need to use a wrench to loosen the locking pin 23 in the locking block 24. However, the locking pin 23 will still be in the locking block 24. When the locking pin 23 is loosened in the locking block 24, the locking pin 23 will move closer to the stop block 21. The stop block 21 applies a force to the locking pin 23, and the locking pin 23 drives the locking block 24 to hold the sealing seat end cover 8 to be processed.

[0048] The locking mechanism 2 of this utility model adopts a reasonable structural design, and combines components such as stop block 21, baffle 22, locking block 24, locking nail 23, and locking screw 25 to achieve stable clamping, convenient operation and strong adaptability. It can effectively improve the stability and processing accuracy of the corner clearing process of the sealing seat end cover 8 to be processed.

[0049] 3. Guide post 3, the guide post 3 is disposed on the top edge of the fixture body 1;

[0050] The guide column 3 is a cylindrical structure made of high-strength stainless steel or alloy steel, which has good wear resistance and corrosion resistance and is suitable for long-term use.

[0051] The guide post 3 is fixed to the top edge of the fixture body 1 by a positioning screw 9; multiple guide posts 3 are provided, and the multiple guide posts 3 are spaced apart. Specifically, the edge of the fixture body 1 is provided with a guide hole to prevent the guide post 3 from being fixed, and the side of the fixture body 1 is provided with a positioning screw 9 hole to allow the positioning screw 9 to pass through and fix the guide post 3 inside the fixture body 1.

[0052] In one optional embodiment, the present invention is provided with four guide posts 3, one of which is provided with a slot 31.

[0053] 4. Compression spring 4, which is sleeved on the guide post 3 and used to support the positioning plate 5;

[0054] Multiple compression springs 4 are provided, and each compression spring 4 corresponds to one of the multiple guide posts 3.

[0055] Compression spring 4 adopts a helical cylindrical spring structure, which can be compressed axially after being subjected to force and return to its original state after the pressure is released.

[0056] In one optional embodiment, the present invention includes four compression springs 4, with one compression spring 4 fitted onto each guide post 3. The bottom of the compression spring 4 abuts against the top of the clamp body 1.

[0057] 5. Positioning plate 5, the positioning plate 5 has a second positioning hole in the middle for the positioning ear 81 of the sealing seat end cap to be processed to pass through; the positioning plate 5 has a guide hole on the edge for the guide post 3 to pass through.

[0058] In an optional embodiment, the positioning plate 5 is made of high-strength stainless steel or aluminum alloy, possessing good rigidity, wear resistance, and corrosion resistance, and is suitable for long-term high-precision machining environments. The second positioning hole in the center of the positioning plate 5 is used to allow the positioning ear 81 of the sealing seat end cap to be processed to pass through, ensuring that the positioning ear 81 is fully exposed for corner clearing. Multiple guide holes are provided on the edge of the positioning plate 5 for the guide post 3 to pass through; specifically, this invention provides four guide holes. The top of the compression spring 4 abuts against the bottom of the positioning plate 5. The positioning plate 5, in conjunction with the guide post 3 and the compression spring 4, performs lifting and lowering movements, exposing the positioning ear 81 area of ​​the sealing seat end cap to be processed in the machining position, so that the EDM equipment can perform corner clearing.

[0059] 6. Paddle 6, which is installed on the positioning plate 5 and can press the positioning plate 5 so that the paddle 6 can be inserted into the slot 31 of the guide post 3 to fix the height of the positioning plate 5.

[0060] In an optional embodiment, the paddle 6 is mounted on the positioning plate 5 and close to the guide post 3 with the slot 31; when the positioning plate 5 is pressed through the guide post 3 and the paddle 6 is moved to engage with the slot 31 of the guide post 3, the height of the positioning plate 5 is fixed.

[0061] Initially, the lever 6 is in a free state, and the positioning plate 5 is supported at its highest position by the compression spring 4. The sealing seat end cap 8 to be processed can be smoothly placed into the fixture body 1 and the positioning plate 5. The operator presses the positioning plate 5, causing it to slide downwards under the compression of the spring 4. At this time, the lever 6 slides along the guide post 3 as the positioning plate 5 descends and approaches the slot 31 on the guide post 3. When the positioning plate 5 descends to the appropriate height, the operator moves the lever 6 to engage it in the slot 31 of the guide post 3, fixing the height of the positioning plate 5 and ensuring that the workpiece (the sealing seat end cap 8 to be processed) will not shift during processing.

[0062] In an optional embodiment, the paddle 6 is fixed to the positioning plate 5 by a fixing screw 10 to ensure that it will not loosen or fall off during use.

[0063] In an optional embodiment, a gasket is provided between the paddle 6 and the positioning plate 5. The gasket reduces direct contact between the paddle 6 and the positioning plate 5, lowers the coefficient of friction, avoids wear on the paddle 6 due to long-term use, and improves the service life of the paddle 6.

[0064] In an optional embodiment, a conversion sleeve is provided around the periphery of the sealing seat end cap 8 to be processed, and is located inside the first positioning hole.

[0065] The adapter sleeve is one of the key components of this invention. It is mainly used to adapt to different specifications of sealing seat end caps 8 to be processed, enabling the elastic clamp to be compatible with workpieces of various sizes and improving the versatility of the elastic clamp. By replacing the adapter sleeve, the elastic clamp can be compatible with sealing seat end caps 8 of different specifications to be processed, reducing equipment investment costs.

[0066] 7. An eight-cavity motor 7 is mounted on the positioning plate 5 and sleeved on the positioning ear 81 of the sealing seat end cover to be processed, and performs corner clearing on the positioning ear 81 of the sealing seat end cover to be processed.

[0067] Specifically, the eight-cavity motor 7 is mounted on the positioning plate 5 and is at a certain distance from the positioning plate 5. The eight-cavity motor 7 of the EDM equipment processes the excess material at the positioning ears 81. The eight-cavity motor 7 is mainly used to clean the positioning ears 81 of the sealing end cap to be processed. Through the principle of EDM discharge, excess material is precisely removed to achieve high-precision corner cleaning. After the two positioning ears 81 of a sealing end cap 8 to be processed are cleaned, the next sealing end cap 8 to be processed can be directly replaced. The eight-cavity motor 7 can complete the cleaning of 4 different sets of positioning ears 81, which is highly efficient.

[0068] The present invention will be described below through a specific embodiment:

[0069] (1) Place the sealing seat end cap 8 to be processed into the first positioning hole of the fixture body 1, raise the positioning plate 5, and quickly and conveniently position the positioning ear 81 of the sealing seat end cap to be processed through the positioning plate 5. At this time, the positioning plate 5 and the positioning ear 81 of the sealing seat end cap to be processed are at the same height.

[0070] (2) The sealing seat end cap 8 to be processed is locked and fixed by the locking mechanism 2 on both sides of the fixture body 1;

[0071] (3) After locking, press the positioning plate 5 down and press it down with the elasticity of the compression spring 4 until the paddle 6 can be inserted into the slot 31 of the guide post 3. At this time, the height of the sealing seat end cover 8 to be processed is higher than the positioning plate 5, and the positioning ear 81 of the sealing seat end cover to be processed is exposed, which is convenient for corner cleaning.

[0072] (4) Use the eight-cavity motor 7 of the EDM equipment to process the excess material at the positioning ear 81.

[0073] The beneficial effects of this utility model are:

[0074] This utility model provides an elastic clamp for an EDM machine, comprising: a clamp body 1, a locking mechanism 2, a guide post 3, a compression spring 4, a positioning plate 5, a paddle 6, and an eight-cavity motor 7. These devices enable automated clamping and precise positioning of the sealing seat end cap 8 to be processed, which is convenient to operate. Furthermore, the eight-cavity motor 7 of the EDM machine can complete the corner clearing operation of multiple positioning ears 81 of the sealing seat end cap 8 to be processed in one operation, thereby improving the processing speed. By changing the conversion sleeve, it can adapt to the processing of various sealing seat end caps 8 to be processed, making it highly adaptable.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An elastic chuck for an electric discharge device, characterized by comprising: include: The fixture body has a first positioning hole in the middle for placing the sealing seat end cap to be processed; The locking mechanism has two parts, which are respectively installed on both sides of the fixture body to hold the sealing seat end cap to be processed. A guide post is disposed at the top edge of the fixture body; A compression spring, which is sleeved on the guide post, is used to support the positioning plate; The positioning plate has a second positioning hole in the middle for the positioning ear of the sealing seat end cap to be processed to pass through; the positioning plate has guide holes on its edge for the guide post to pass through. A paddle, which is mounted on the positioning plate and can press the positioning plate to make the paddle engage in the slot of the guide post to fix the height of the positioning plate; An eight-cavity motor is mounted on a positioning plate and fitted over the positioning ears of the sealing seat end cap to be processed, and the positioning ears of the sealing seat end cap to be processed are cleared.

2. The elastic clamp for an EDM device according to claim 1, characterized in that: The locking mechanism includes: a stop block, a baffle plate, a locking pin, and a locking block; The locking block has an arc shape on one side and can pass through the locking square groove on one side of the fixture body to cooperate with the outer surface of the sealing seat end cap to be processed. The baffle and the stop block are fixed sequentially to the outer surface of one side of the fixture body; The locking pin is used to pass through the baffle to fix or release the locking block; The stop block is provided with a through hole for inserting a wrench and rotating the locking pin to bring the locking pin close to the stop block. The resistance of the stop block pushes the locking block out, thereby causing the locking block to grip the end cap of the sealing seat to be processed.

3. The elastic clamp for an EDM device according to claim 2, characterized in that: The locking mechanism further includes: a locking screw; The baffle and the stop block are sequentially fixed to the outer surface of one side of the fixture body by the locking screws.

4. The elastic clamp for an EDM device according to claim 1, characterized in that: A conversion sleeve is provided on the periphery of the sealing seat end cap to be processed, and is located in the first positioning hole.

5. The elastic clamp for an EDM device according to claim 1, characterized in that: The guide post is fixed to the top edge of the fixture body by positioning screws; The guide posts are provided in multiple ways, and the multiple guide posts are spaced apart.

6. The elastic clamp for an EDM device according to claim 5, characterized in that: One of the guide posts is provided with a slot, and the paddle is installed on the positioning plate and close to the guide post with the slot; when the positioning plate is pressed through the guide post and the paddle is moved to engage with the slot of the guide post, the height of the positioning plate is fixed.

7. The elastic clamp for an EDM device according to claim 1, characterized in that: Multiple compression springs are provided, and each compression spring corresponds to one of the multiple guide posts.

8. The elastic clamp for an EDM device according to claim 1, characterized in that: The paddle is fixed to the positioning plate by fixing screws.

9. The elastic clamp for an electrical discharge machine according to claim 8, characterized in that: A gasket is provided between the paddle and the positioning plate.

10. The elastic clamp for an electrical discharge machine according to claim 1, characterized in that: The main body of the clamp is made of stainless steel; the main body of the clamp has a stepped structure.

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