Working liquid tank for electric discharge machine

Abstract

The utility model discloses a working fluid tank for an electric discharge machine. The working fluid tank comprises a fixed frame, an extension frame, two sealing rings and a controller, the fixing frame is installed on a workbench of the electric discharge machine, a socket groove is formed in the top of the fixing frame, and a bearing platform for placing a workpiece is installed on the workbench and arranged in the fixing frame. The extension frame is inserted into the socket groove in a lifting mode, and the workbench is provided with a driving piece for driving the extension frame. A containing groove is defined by the extension frame, the fixing frame and the workbench. Two annular grooves are formed in the groove wall of the side, close to the bearing platform, of the socket groove, the inner side of the sealing ring is embedded in the annular grooves, and the outer side of the sealing ring abuts against the extension frame in a pressing mode. An assembling groove arranged between the two annular grooves is formed in the groove wall, a humidity sensor is installed in the assembling groove, and a signal lamp is installed outside the fixing frame. The controller is in signal connection with the driving part, the humidity sensor and the signal lamp. The working fluid tank solves the problems that the height of the tank side wall of an existing working fluid tank of the electric discharge machine is large, and a workpiece is inconvenient to mount and dismount.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machine tool equipment technology, specifically to a working fluid tank for an electrical discharge machine. Background Technology

[0002] Electrical discharge machine tools, also known as CNC electrical discharge machine tools, electrical discharge machines, spark machines, etc., are a type of electrical processing equipment.

[0003] During the use of EDM machines, some workpieces require complete immersion in the working fluid. These types of EDM machines require a special working fluid tank to hold the working fluid. To accommodate workpieces of different heights, the side walls of the working fluid tank on these EDM machines are relatively high and cannot be adjusted, making it inconvenient to install and remove workpieces.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a working fluid tank for EDM machines is provided to solve the problem that the side walls of existing EDM working fluid tanks are too high, making it inconvenient to install and remove workpieces.

[0006] To achieve the above objectives, a working fluid tank for an EDM machine is provided, comprising:

[0007] A fixed frame is installed on the worktable of an EDM machine. The top of the fixed frame has a slot, and the slot is arranged in a circle along the circumference of the fixed frame. A support platform for placing the workpiece to be processed is installed on the worktable, and the support platform is set in the fixed frame.

[0008] An extension frame, the lower part of which is vertically and flexibly inserted into the receiving slot, and a driving component for driving the upper part of the extension frame is installed on the worktable. The extension frame, the fixed frame and the worktable together form a receiving tank for containing working fluid.

[0009] Two sealing rings are provided. The groove wall of the socket near the support platform has two annular grooves. The two annular grooves are spaced apart along the depth direction of the socket. The inner side of the sealing ring is detachably embedded in the annular groove. The outer side of the sealing ring is pressed against the extension frame. The two sealing rings, the extension frame and the groove wall enclose a seepage-proof space. The groove wall has an assembly groove between the two annular grooves. A humidity sensor is installed in the assembly groove. An indicator light is installed on the outside of the fixed frame.

[0010] The controller is connected to the drive unit, the humidity sensor, and the indicator light. The controller acquires the humidity value collected by the humidity sensor. After the working fluid in the working fluid tank seeps into the anti-seepage space through the upper sealing ring, the lower sealing ring seals the seeping working fluid to prevent it from seeping out of the fixed frame. The controller turns on the indicator light when the humidity value is greater than a preset threshold to indicate that the upper sealing ring needs to be replaced.

[0011] Furthermore, a liquid level sensor is installed on the upper part of the inner wall of the extension frame, and the liquid level sensor signal is connected to the controller.

[0012] Furthermore, a laser emitter and a laser receiver for receiving the laser line from the laser emitter are mounted on the extension frame. The laser emitter and the laser receiver are respectively aligned with opposite sides of the workpiece and positioned above the liquid level sensor. The laser emitter and the laser receiver are signal-connected to the controller. The controller raises the extension frame via the drive component. After the laser receiver receives the laser line, the controller obtains the height of the workpiece. Then, the controller continues to raise the extension frame a preset distance via the drive component so that the liquid level sensor reaches the indicated height.

[0013] Furthermore, the laser emitter and the laser receiver are mounted on the top of the extension frame.

[0014] Furthermore, the opposite sides of the extension frame extend back to form ear plates, and the driving component is an electro-hydraulic push rod. The electro-hydraulic push rod has a fixed end and a telescopic end opposite to each other. The fixed end is installed on the worktable, and the telescopic end is connected to the ear plate.

[0015] Furthermore, the sealing ring is a rubber sealing ring.

[0016] The beneficial effects of this utility model are as follows: The working fluid tank for an EDM machine has an extension frame that can be vertically inserted into a slot in the fixed frame. Driven by an electro-hydraulic push rod, the extension frame, fixed frame, and worktable together form an adjustable-depth receiving tank. This allows for convenient installation and removal of workpieces on the support platform within the receiving tank, improving workpiece loading and unloading efficiency. Two sealing rings are installed between the extension frame and the fixed frame. When the upper sealing ring ages due to prolonged contact with the working fluid and loses its sealing performance, the lower sealing ring blocks any seepage, maintaining its sealing function and preventing working fluid from leaking out of the fixed frame, thus avoiding waste and contamination. Simultaneously, when the humidity value collected by the humidity sensor between the two sealing rings increases, the controller activates an indicator light to prompt the operator to replace the upper sealing ring, further improving the anti-leakage performance of the working fluid tank.

[0017] This invention relates to a working fluid tank for an EDM machine. The controller controls an electro-hydraulic push rod to raise an extension frame, causing the liquid level sensor on the extension frame to reach the indicated height (30mm-50mm above the workpiece). When the working fluid in the tank reaches the indicated height, the controller shuts off the delivery pump based on the signal from the liquid level sensor, thus maintaining the working fluid level at the indicated height. This ensures safety during workpiece processing, guarantees the processing effect, and reduces working fluid waste. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the working fluid tank for an EDM machine according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the workpiece loading and unloading state according to an embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram illustrating the controller acquiring the workpiece height status according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram showing the liquid level sensor reaching the indicated height in an embodiment of this utility model.

[0023] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Reference Figures 1 to 5 As shown, this utility model provides a working fluid tank for an EDM machine, including: a fixed frame 1, an extension frame 4, a sealing ring 5, and a controller.

[0027] The bottom of the fixed frame 1 is mounted on the worktable 2 of the EDM machine. A slot a is provided at the top of the fixed frame 1, and slot a is arranged in a circle along the circumference of the fixed frame 1. A support platform 21 is mounted on the worktable 2, which is used to hold the workpiece 3 to be processed. A fixture for clamping and fixing the workpiece 3 is mounted on the support platform 21, which is located within the fixed frame 1. The structure of the workpiece clamping fixture of the EDM machine is prior art and will not be described in this embodiment.

[0028] The lower part of the extension frame 4 is vertically and flexibly inserted into the slot a of the fixed frame 1. A drive unit for driving the upper part of the extension frame 4 is installed on the worktable 2. The extension frame 4, the fixed frame 1, and the worktable 2 together form a receiving tank b for containing the working fluid.

[0029] See Figure 4 , Figure 5 As shown, in this embodiment, the opposite sides of the extension frame 4 extend back to form ear plates 44. The driving component is an electro-hydraulic push rod 7, which is vertically arranged. The electro-hydraulic push rod 7 has a fixed end and a telescopic end opposite to each other. The fixed end of the electro-hydraulic push rod 7 is mounted on the worktable 2, and the telescopic end of the electro-hydraulic push rod 7 is connected to the ear plate 44.

[0030] There are two sealing rings 5. Two annular grooves are formed on the side of the socket a near the base 21, spaced apart along the depth of the socket a. The inner side of the sealing ring 5 is detachably embedded in the annular groove, and the outer side of the sealing ring 5 presses against the extension frame 4. The two sealing rings 5, the extension frame 4, and the side of the socket a near the base 21 enclose a seepage-proof space. An assembly groove is provided on the side of the socket a near the base 21, located between the two annular grooves, and a humidity sensor 6 is installed in the assembly groove. An indicator light 11 is installed on the outside of the fixed frame 1.

[0031] In a preferred embodiment, the sealing ring 5 is a rubber sealing ring.

[0032] In this embodiment, the controller signal is connected to the drive component (electro-hydraulic push rod 7), the humidity sensor 6, and the indicator light 11. The controller drives the extension frame 4 to rise and fall by extending and retracting the electro-hydraulic push rod 7, thereby adjusting the depth of the receiving groove b.

[0033] The controller acquires the humidity value collected by the humidity sensor 6. During long-term use, the upper sealing ring 5 of the working fluid tank, being in direct contact with the working fluid, is more prone to aging and loss of sealing performance. When the working fluid in the tank seeps into the anti-leakage space through the upper sealing ring 5, the lower sealing ring 5 acts as a seal, blocking the seeping working fluid and preventing it from leaking out of the fixed frame 1, allowing the EDM machine to continue processing the workpiece using the working fluid. Simultaneously, the seeping working fluid causes the humidity value collected by the humidity sensor 6 to increase. When the humidity value exceeds a preset threshold, the controller activates the indicator light 11, reminding the operator to replace the upper sealing ring 5 to improve the anti-leakage performance of the working fluid tank.

[0034] Combination Figure 2 , Figure 4 and Figure 5 As shown, in a preferred embodiment, a liquid level sensor 41 is installed on the upper part of the inner wall of the extension frame 4, and the liquid level sensor 41 is connected to the controller.

[0035] For workpieces of the same model and batch (with the same height), after the workpiece is loaded, the operator controls the electric hydraulic push rod 7 to raise the extension frame 4 a set distance according to the height h0 of workpiece 3. After the extension frame 4 is raised a set distance, the liquid level sensor 41 reaches the indicated height h1. In this embodiment, the distance between the indicated height h1 and the height h0 of workpiece 3 is 30mm-50mm.

[0036] In this embodiment, the controller signal is connected to the infusion pump. The controller controls the infusion pump to inject the working fluid from the working fluid storage tank into the receiving tank b. When the working fluid level reaches the indicated height h1, the controller receives a signal from the level sensor 41 and shuts off the infusion pump, ensuring that the working fluid level is 30mm-50mm higher than the workpiece, thereby ensuring safety and processing effect when machining the workpiece on the EDM machine.

[0037] The controller controls the electro-hydraulic push rod 7 to raise the extension frame 4 by a set distance, thereby ensuring that the working fluid level is maintained 30mm-50mm above the top of the workpiece during processing, thus ensuring safety and processing results. The worktable 2 is equipped with a drain port. After the workpiece is processed, the working fluid is discharged from the receiving tank b, and the controller controls the telescopic end of the electro-hydraulic push rod 7 to retract and reset, facilitating the unloading of the workpiece.

[0038] See Figures 2 to 5 As shown, in a preferred embodiment, a laser emitter 42 and a laser receiver 43 for receiving the laser line from the laser emitter 42 are mounted on the extension frame 4. Preferably, the laser emitter 42 and the laser receiver 43 are mounted on the top of the extension frame 4.

[0039] The laser emitter 42 and laser receiver 43 are respectively aligned with opposite sides of the workpiece 3, and are positioned above the liquid level sensor 41. The laser emitter 42 and laser receiver 43 are connected to the controller.

[0040] For details, please refer to Figure 2 As shown, after the workpiece is loaded, the laser line of the laser emitter 42 is blocked by the workpiece 3. At this time, the laser receiver 43 cannot receive the laser line.

[0041] See Figure 3 As shown, the controller lifts the extension frame 4 via the drive component (electro-hydraulic push rod 7). When the laser emitter 42 reaches the height of the workpiece 3, the laser receiver 43 receives the laser line. At this time, the controller obtains the height h0 of the workpiece 3.

[0042] See Figure 4 As shown, after the controller acquires the height h0 of the workpiece 3, it shuts off the laser emitter 42 and the laser receiver 43, and continues to raise the extension frame 4 a preset distance via the electro-hydraulic push rod 7, thereby causing the liquid level sensor 41 to reach the indicated height h1. At this time, the liquid level sensor 41 is 30mm-50mm above the workpiece 3. Subsequently, the controller controls the infusion pump to inject working fluid into the receiving tank b. When the liquid level of the working fluid reaches the indicated height h1, the controller receives a signal from the liquid level sensor 41 and shuts off the infusion pump, ensuring that the liquid level of the working fluid is 30mm-50mm above the workpiece, thus ensuring safety and processing effect during EDM machining.

[0043] For workpieces 3 of different models (different heights), the controller raises the extension frame 4 via the electro-hydraulic push rod 7 and obtains the height h0 of the workpiece 3 via the laser emitter 42 and laser receiver 43. After the laser emitter 42, laser receiver 43, and liquid level sensor 41 are installed, the height difference between the laser emitter 42 and the liquid level sensor 41 is fixed. For workpieces 3 of different heights, after the controller obtains the height h0 of the workpiece 3, the controller controls the electro-hydraulic push rod 7 to continue raising the extension frame 4 by a preset distance, so that the liquid level sensor 41 reaches the indicated height h1. This ensures that the liquid level of the injected working fluid is maintained within a range of 30mm-50mm above the top of the workpiece, thereby ensuring safety and processing effect during EDM machining and improving the processing efficiency. After the workpiece is processed, the working fluid is discharged from the receiving tank b, and the controller controls the telescopic end of the electro-hydraulic push rod 7 to retract and reset, thus facilitating the unloading of the workpiece.

[0044] This invention relates to a working fluid tank for an EDM machine. An extension frame is driven by an electro-hydraulic push rod, allowing the extension frame, fixed frame, and worktable to form an adjustable-depth receiving tank. This facilitates the easy installation and removal of workpieces on the support platform within the receiving tank, improving workpiece loading and unloading efficiency. Two sealing rings are installed between the extension frame and the fixed frame. If the upper sealing ring loses its sealing performance, the lower sealing ring continues to seal against any leakage of working fluid, preventing leakage to the outside of the fixed frame and avoiding waste and contamination. Simultaneously, when the humidity value collected by the humidity sensor increases, the controller activates an indicator light to prompt the operator to replace the upper sealing ring, further enhancing the leak-proof performance of the working fluid tank.

[0045] This invention relates to a working fluid tank for an EDM machine. The controller controls an electro-hydraulic push rod to raise an extension frame, causing the liquid level sensor on the extension frame to reach the indicated height (30mm-50mm above the workpiece). When the working fluid in the tank reaches the indicated height, the controller shuts off the delivery pump based on the signal from the liquid level sensor, thus maintaining the working fluid level at the indicated height. This ensures safety during workpiece processing, guarantees the processing effect, and reduces working fluid waste.

[0046] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A working fluid tank for an electrical discharge machine, characterized in that, include: A fixed frame is installed on the worktable of an EDM machine. The top of the fixed frame has a slot, and the slot is arranged in a circle along the circumference of the fixed frame. A support platform for placing the workpiece to be processed is installed on the worktable, and the support platform is set in the fixed frame. An extension frame, the lower part of which is vertically and flexibly inserted into the receiving slot, and a driving component for driving the upper part of the extension frame is installed on the worktable. The extension frame, the fixed frame and the worktable together form a receiving tank for containing working fluid. Two sealing rings are provided. The groove wall of the socket near the support platform has two annular grooves. The two annular grooves are spaced apart along the depth direction of the socket. The inner side of the sealing ring is detachably embedded in the annular groove. The outer side of the sealing ring is pressed against the extension frame. The two sealing rings, the extension frame and the groove wall enclose a seepage-proof space. The groove wall has an assembly groove between the two annular grooves. A humidity sensor is installed in the assembly groove. An indicator light is installed on the outside of the fixed frame. The controller is connected to the drive unit, the humidity sensor, and the indicator light. The controller acquires the humidity value collected by the humidity sensor. After the working fluid in the working fluid tank seeps into the anti-seepage space through the upper sealing ring, the lower sealing ring seals the seeping working fluid to prevent it from seeping out of the fixed frame. The controller turns on the indicator light when the humidity value is greater than a preset threshold to indicate that the upper sealing ring needs to be replaced.

2. The working fluid tank for an EDM machine according to claim 1, characterized in that, A liquid level sensor is installed on the upper part of the inner wall of the extension frame, and the liquid level sensor signal is connected to the controller.

3. The working fluid tank for an EDM machine according to claim 2, characterized in that, A laser emitter and a laser receiver for receiving the laser line from the laser emitter are mounted on the extension frame. The laser emitter and the laser receiver are respectively aligned with opposite sides of the workpiece and positioned above the liquid level sensor. The laser emitter and the laser receiver are signal-connected to the controller. The controller raises the extension frame via the drive component. After the laser receiver receives the laser line, the controller obtains the height of the workpiece. Then, the controller continues to raise the extension frame a preset distance via the drive component so that the liquid level sensor reaches the indicated height.

4. The working fluid tank for an EDM machine according to claim 3, characterized in that, The laser emitter and the laser receiver are mounted on the top of the extension frame.

5. The working fluid tank for an EDM machine according to claim 1, characterized in that, The two opposite sides of the extension frame extend back to form ear plates. The driving component is an electro-hydraulic push rod. The electro-hydraulic push rod has a fixed end and a telescopic end. The fixed end is installed on the worktable, and the telescopic end is connected to the ear plate.

6. The working fluid tank for an EDM machine according to claim 1, characterized in that, The sealing ring is a rubber sealing ring.

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