Automatic focusing device of electric discharge machine

Abstract

The embodiment of the utility model provides an automatic focusing device of an electric discharge machine. The automatic focusing device comprises a supporting frame; the stabilizing groove is formed in the bottom end of the supporting frame; the buoy sensor is arranged in the stabilizing tank and is used for detecting liquid level change and transmitting information; the adjusting rod is used for adjusting the position of the focusing device; the driving motor is mounted on the supporting frame and drives the adjusting rod to move up and down so as to realize automatic focusing; the stabilizing groove comprises a multi-layer structure with a plurality of shock absorption interlayers; wherein a liquid level adjusting mechanism is arranged on one side of the stabilizing tank and comprises a liquid level adjusting valve, a liquid discharging pipe, a backflow pipe, a temporary storage tank and a circulating pump, the liquid level adjusting valve is used for discharging oil liquid in the stabilizing tank into the temporary storage tank, and meanwhile the circulating pump injects the temporarily stored oil liquid into the stabilizing tank again through the backflow pipe. Through the scheme of the embodiment of the invention, the problems of liquid level fluctuation and instability caused by instantaneous high voltage generated by arc discharge in the electric spark machining process can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical processing equipment, in particular to an automatic focusing device of an electric spark machine. BACKGROUND

[0002] The automatic focusing device of the electric spark machine is a device for automatically adjusting the position of the focal point during the electric spark processing process, aiming to ensure the processing precision and efficiency. However, in actual application, the electric arc discharge during the electric spark processing process can produce instantaneous high pressure, which can cause the liquid level of the cooling liquid or working liquid in the processing area to fluctuate and become unstable. This instability of the liquid level can further affect the accuracy of the focusing device, thereby affecting the overall processing quality and making the processing process more complex and difficult to control. SUMMARY

[0003] Therefore, the present application provides an automatic focusing device of an electric spark machine to at least partially solve the problems in the prior art.

[0004] An automatic focusing device of an electric spark machine comprises:

[0005] a support frame;

[0006] a stabilizing groove arranged at the bottom end of the support frame;

[0007] a float sensor arranged in the stabilizing groove for detecting changes in the liquid level and transmitting information;

[0008] an adjusting rod for adjusting the position of the focusing device;

[0009] a drive motor mounted on the support frame for driving the adjusting rod to move up and down to achieve automatic focusing;

[0010] The stabilizing groove comprises a multi-layer structure with multiple shock-absorbing layers; wherein

[0011] The stabilizing groove is provided with a liquid level adjusting mechanism on one side, and the liquid level adjusting mechanism comprises a liquid level adjusting valve, a drain pipe, a return pipe, a temporary storage tank and a circulating pump. The liquid level adjusting valve is used to discharge the oil in the stabilizing groove into the temporary storage tank, and the circulating pump is used to re-inject the temporarily stored oil into the stabilizing groove through the return pipe.

[0012] According to one embodiment, the bottom of the stabilizing groove is provided with multiple shock-absorbing pads.

[0013] According to one embodiment, the float sensor comprises a floating body and a detection probe. The floating body can drive the detection probe to move up and down when the liquid level changes, and the detection probe can monitor the changes in the liquid level in real time.

[0014] According to one embodiment, the adjusting rod comprises a sliding rod and a tooth block arranged on the surface of the sliding rod.

[0015] According to one embodiment, the driving motor is connected with the tooth block on the adjusting rod through a transmission gear set.

[0016] According to one embodiment, the bottom of the support frame is provided with a plurality of sets of shock-absorbing foot pads.

[0017] According to one embodiment, the side wall of the stabilizing groove is provided with a transparent window.

[0018] According to one embodiment, the top end of the adjusting rod is provided with a focusing lens.

[0019] According to one embodiment, the driving motor is installed on the upper part of the support frame.

[0020] The embodiment of the present disclosure provides an automatic focusing device of an electric spark machine, which comprises a support frame, a stabilizing groove arranged at the bottom end of the support frame, a float sensor arranged in the stabilizing groove and used for detecting liquid level change and delivering information, an adjusting rod used for adjusting the position of the focusing device, a driving motor installed on the support frame and used for driving the adjusting rod to move up and down to realize automatic focusing, and the stabilizing groove comprises a multilayer structure with a plurality of shock-absorbing layers; one side of the stabilizing groove is provided with a liquid level adjusting mechanism, and the liquid level adjusting mechanism comprises a liquid level adjusting valve, a liquid discharge pipe, a backflow pipe, a temporary storage tank and a circulating pump; the liquid level adjusting valve is used for discharging oil in the stabilizing groove into the temporary storage tank, and the circulating pump is used for re-injecting the temporarily stored oil into the stabilizing groove through the backflow pipe. Through the scheme of the embodiment of the present disclosure, the problems of liquid level fluctuation and instability caused by the instantaneous high pressure generated by arc discharge in the electric spark machining process can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the exemplary embodiments of the present disclosure, the drawings required in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a structural schematic diagram of the automatic focusing device of the electric spark machine according to the present disclosure;

[0023] Figure 2 is a structural schematic diagram of the stabilizing groove in the automatic focusing device of the electric spark machine according to the present disclosure;

[0024] Figure 3 is a structural schematic diagram of the stabilizing groove in the automatic focusing device of the electric spark machine according to the present disclosure;Figure 1 Enlarged view of part A;

[0025] Figure 4 is the automatic focusing device of the electric spark machine Figure 2 Enlarged view of part B.

[0026] In the figure: 1, support frame; 2, stable groove; 3, float sensor; 4, adjusting rod; 5, drive motor; 6, shock absorption interlayer; 7, shock absorbing pad; 8, floating body; 9, detection probe; 10, sliding rod; 11, tooth block; 12, transmission gear set; 13, shock absorbing rubber pad; 14, transparent window; 15, focusing lens; 16, liquid level regulating valve; 17, drain pipe; 18, return pipe; 19, temporary storage tank; 20, circulating pump DETAILED DESCRIPTION

[0027] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0028] As Figure 1 shown, the automatic focusing device of the electric spark machine of the present application includes support frame 1, stable groove 2, float sensor 3, adjusting rod 4 and drive motor 5. In addition, the device also includes a plurality of auxiliary components and subsystems for improving the stability and response speed of the system.

[0029] Support frame 1 is the main structural component of the entire focusing device, providing a mechanical basis for mounting and fixing all other parts. Stable groove 2 is arranged at the bottom end of support frame 1, which serves to hold the cooling liquid and ensure the stability of the liquid level. The stable groove 2 is configured with a float sensor 3, which detects the change of liquid level and feeds back the signal to the control system to realize automatic control.

[0030] In order to effectively deal with external and internal vibration interference, the stable tank 2 adopts a multi-layer shock-absorbing layer 6 structure, which effectively absorbs and reduces the impact of vibration, making the working environment more stable. At the same time, a complete liquid level adjusting mechanism is also provided on one side of the stable tank 2, which includes multiple functional components. This mechanism mainly includes a liquid level adjusting valve 16, a drain pipe 17, a return pipe 18, a temporary storage tank 19, and a circulating pump 20. The liquid level adjusting valve 16 controls the discharge of oil in the stable tank 2 to the temporary storage tank 19, and the circulating pump 20 reintroduces the oil in the temporary storage tank 19 into the stable tank 2 through the return pipe 18, ensuring constant and stable liquid level and preventing fluctuations.

[0031] The adjusting rod 4 is used to adjust the position of the focusing device. It is connected to the support frame 1 and can move along a set path. The drive motor 5 is installed on the support frame 1 and directly drives the adjusting rod 4 to move up and down, realizing automatic focusing. The drive motor 5 receives information from the float sensor 3 and other control modules, and adjusts the position according to the pre-written logic program, ensuring that it always works at the best focus point.

[0032] To solve the problem of liquid level fluctuation and instability caused by instantaneous high pressure during electric spark machining, this automatic focusing device uses floating sensor monitoring technology and efficient liquid level adjusting mechanism, which quickly responds and corrects any slight deviation that may exist, so that the machining surface and the liquid level maintain a constant relative height, thereby ensuring the continuous and stable operation of the equipment and not being affected by the impact of electric spark, significantly improving the processing quality and efficiency.

[0033] In one embodiment, as shown in Figure 2 The bottom of the stable tank 2 of the automatic focusing device of the electric spark machine of the present application is provided with a plurality of shock-absorbing pads 7. The shock-absorbing pads 7 are distributed on the entire bottom surface area of the stable tank 2, ensuring that the device has a stable mechanical environment during operation. These shock-absorbing pads 7 are made of rubber, silicone or other elastic materials with excellent shock-absorbing properties. Specifically, the main function of the shock-absorbing pads 7 is to reduce the impact of external mechanical vibration on the equipment, thereby improving the stability and reliability of the device under various working conditions.

[0034] In addition, the shock-absorbing pads 7 are fixed to the bottom surface of the stable tank 2 by bolts or tightly bonded with high-strength adhesive, to ensure reliable connection during long-term use. This not only prevents displacement or falling due to long-term operation, but also ensures good shock-absorbing effect. The design of the shock-absorbing pads 7 also takes into account the ease of disassembly and replacement, so that users can choose different materials or thicknesses of pads for replacement according to actual needs.

[0035] For example, shock-absorbing pads 7 of a certain shape, such as round or square, and thickness can be selected and installed at designated positions on the bottom of the stabilizing tank 2. In order to ensure the best shock-absorbing effect and stability, these pads need to be evenly distributed on the tank bottom, and each pad needs to maintain a proper distance from the next one to achieve maximum space utilization and mechanical performance. Through reasonable structural design and material selection, the above patent feature requirements are achieved, providing more reliable support and anti-shock protection for the equipment.

[0036] In one embodiment, continuing to refer to Figure 2 , the float sensor 3 of the automatic focusing device of the electric spark machine of the present application comprises a floating body 8 and a detection probe 9. The floating body 8 can drive the detection probe 9 to move up and down when the liquid level in the stabilizing tank 2 changes, so as to realize real-time monitoring of the liquid level change.

[0037] The detection probe 9 in the focusing device is integrated with a sensitive sensing element, which can work continuously during the change of the overall vertical position of the float sensor 3 due to liquid level fluctuations, ensuring the timeliness and accuracy of signal transmission. Due to the design of the floating body 8, it maintains slight friction with the inner wall of the stabilizing tank 2, thereby reducing the shaking amplitude when moving up and down with the liquid surface and improving the monitoring accuracy. The arrangement of the above-mentioned parts ensures that the entire device can operate stably in a complex processing environment. For example, in the case of liquid surface fluctuations during electric spark processing, this design can quickly feedback the liquid level change and provide accurate basis for subsequent automatic focusing.

[0038] Specifically, the detection probe 9 can be fixedly connected to the floating body 8, and the entire float sensor 3 can be placed in the stabilizing tank 2 filled with a specific insulating liquid. By precisely adjusting the balance between buoyancy and gravity, and reasonably selecting the material to ensure good contact without hindering free movement, the float under this structure can immediately sense and follow the change after the liquid level fluctuates due to the current front electric spark processing, and then the detection probe 9 obtains new data points to complete the liquid level monitoring function.

[0039] In one embodiment, specifically referring to Figure 3 , the adjusting rod 4 of the automatic focusing device of the electric spark machine of the present application is composed of a sliding rod 10 and a tooth block 11 arranged on the surface of the sliding rod 10. The sliding rod 10 can move vertically up and down in the guide rail of the support frame 1, and the tooth block 11 is fixed on the outer surface of the sliding rod 10, forming a stable mechanical structure with the adjusting rod 4. The design of the tooth block 11 enables the adjusting rod 4 to adjust the position more accurately and effectively transmit the power provided by the driving motor 5. The connection between the sliding rod 10 and the tooth block 11 is by welding or bolt connection, ensuring good working stability under high-frequency vibration and heavy load.

[0040] In addition, the driving motor 5 directly drives the movement of the sliding rod 10 through a transmission mechanism, so as to realize accurate position adjustment to meet the focus adjustment requirements in different processing requirements. The transmission mechanism can be selected from common transmission components such as chains or lead screws, and is flexibly configured according to specific use scenarios.

[0041] For example, the sliding rod 10 can be first placed in the vertical guide rail formed by the support frame 1. Then a plurality of uniformly arranged tooth blocks 11 are fixed on the outer surface of the sliding rod 10 to ensure the synchronous and coordinated operation thereof with the driving system. When the driving system is started, the tooth blocks 11 on the sliding rod 10 are driven to move correspondingly, thereby completing the entire focusing process. Such a structural design not only ensures the stability during the operation of the equipment, but also greatly improves the speed and accuracy of automatic focusing.

[0042] In an embodiment, the driving motor 5 of the automatic focusing device of the electric spark machine is connected with the tooth blocks 11 on the adjusting rod 4 through the transmission gear set 12. Such a connection structure enables the driving motor 5 to accurately control the movement of the adjusting rod 4 through the transmission gear set 12, thereby ensuring the stability and accuracy of the automatic focusing process. The transmission gear set 12 includes a plurality of meshing gears which are installed on the special installation positions in the support frame 1, thereby ensuring the mechanical strength and transmission efficiency of the entire system.

[0043] The meshing between the transmission gear set 12 and the tooth blocks 11 is a key link for enabling the driving motor 5 to drive the movement of the adjusting rod 4. The transmission gear set 12 is composed of a plurality of gears which are precisely manufactured to ensure the accuracy and smoothness thereof. The tooth blocks 11 are located on one side of the adjusting rod 4 and have a tooth design on the surface thereof to tightly cooperate with the driven gears in the transmission gear set 12. When the driving motor 5 works, the power is transmitted to the driving gear, and then gradually transmitted to the tooth blocks 11 through a series of gears, thereby realizing the up-and-down movement of the adjusting rod 4 to adapt to the requirements of automatic focusing.

[0044] Specifically, for example, the driving motor 5 can be selected from high-precision DC servo motors which have large torque output capacity and fast response speed. Through a suitable electrical control system, the rotation angle of the motor can be accurately controlled according to the focusing algorithm, thereby realizing accurate control of the transmission gear set 12. In this process, the power of the motor is gradually amplified through the transmission gear set 12 to overcome the load resistance of the adjusting rod 4, and finally realize fine position adjustment.

[0045] In an embodiment, the support frame 1 of the automatic focusing device of the electric spark machine is provided with a plurality of groups of shock-absorbing foot pads 13 (see Figure 1). Specifically, these shock-absorbing foot pads are installed at the bottom of the support frame 1 where it contacts the ground. With this arrangement, the design effectively isolates unstable factors caused by external environmental vibrations, ensuring the stability and accuracy of the autofocus process. Each set of shock-absorbing foot pads contains a composite structure of multiple layers of different materials, which interact with each other to provide comprehensive vibration absorption and damping effects. This multi-layer composite design can effectively deal with vibrations of different frequencies and intensities.

[0046] For example, in a specific implementation, the shock-absorbing foot pads can be firmly fixed at the bottom of the support frame 1 through adhesive or embedded installation. To ensure optimal shock-absorbing performance, the number of layers and materials of the shock-absorbing foot pads can be optimized and adjusted according to the requirements of the actual working environment. In terms of material selection, soft materials such as elastic rubber layers and memory foam layers can be used as the bottom layer to directly contact the ground, while the upper layer can use high-hardness metal alloy plates or other solid materials. Through the combination of the two, the stability and shock-absorbing efficiency of the overall structure are further improved. In this way, the shock-absorbing foot pads can provide good shock-absorbing effect without affecting the stability and precision adjustment function of the entire focusing device.

[0047] In one embodiment, the side wall of the stable groove 2 of the automatic focusing device of the electric spark machine of the present application is provided with a transparent window 14. This transparent window 14 provides an intuitive observation window for the device, allowing the operator to check the liquid level and internal working environment at any time during the operation of the device, ensuring normal operation of the device. In addition, the transparent window 14 is made of transparent material with high corrosion resistance, wear resistance, and high light transmittance, ensuring clear observation and mechanical strength after long-term use. Specifically, the installation position of this transparent window 14 is on the side wall of the stable groove 2, and does not interfere with the work and arrangement of other components, and can provide an effective line of sight range.

[0048] For example, in a specific implementation, the transparent window 14 is used in cooperation with the float sensor 3. Since the float sensor 3 is located inside the stable groove 2 and is used to detect liquid level changes and transmit information, the transparent window 14 can assist in verifying the authenticity of the detection results of the float sensor 3. The technician can observe the window to determine whether the actual liquid level position is consistent with the signal provided by the float sensor 3, thereby further improving the accuracy of system control. In terms of structure, the transparent window 14 is directly embedded into the side wall of the stable groove 2, and a sealing ring is used to ensure a tight fit with the surrounding structure, preventing liquid leakage and ensuring the overall safety and reliability of the device.

[0049] In one embodiment, as Figure 4As shown, the adjustment rod 4 of the automatic focusing device of the EDM machine according to the present application is provided with a focusing lens 15 at the top end. This feature is one of the key parts of the automatic focusing device, mainly used for precise control and adjustment of the focusing effect of the processing area. Through reasonable installation and use of the focusing lens 15, stable light path focusing can be achieved at different workpiece positions, ensuring optimal energy transfer during processing, thereby guaranteeing the effect and precision of EDM processing.

[0050] The focusing lens 15 is arranged at the top end of the adjustment rod 4, ensuring that it is located at the appropriate position that can directly affect the light path focusing. Specifically, the adjustment rod 4 is fixed on the driving path of the driving motor 5 through mechanical connection, and the focusing lens 15 is integrated and installed at the top end. This design ensures that the lens can follow the up and down movement of the adjustment rod 4, realizing real-time adjustment of the optical path distance. In addition, the optical properties and installation stability of the focusing lens 15 are precisely calibrated to maintain good working condition during the entire processing process, while adapting to various complex processing environments. In this way, the focusing lens 15 is always within the optimal working range, making the automatic focusing function more accurate and effective.

[0051] For example, high-precision threaded fasteners and spring washers can be used during installation to tightly combine the focusing lens 15 with the top end of the adjustment rod 4, ensuring a non-offset connection between the two. At the same time, the up and down movement of the adjustment rod 4 is driven by the driving motor 5, which accurately adjusts the position of the lens under the control system instructions, so that the light path always maintains the optimal focusing point. In this way, the dynamic adjustment range of the entire focusing system is expanded, ensuring that the processing area at different heights and angles can achieve the best focal length.

[0052] In one embodiment, the driving motor 5 of the automatic focusing device of the EDM machine according to the present application is installed at the upper part of the support frame 1. Specifically, this position is chosen to provide a stable and efficient power source for the adjustment rod 4. The design of the support frame 1 not only provides a solid foundation for the entire focusing device, but also optimizes the space utilization. The connection between the driving motor 5 and the support frame 1 ensures that it can smoothly output power during operation and reduce unnecessary vibration transmission to other components. In addition, the installation position of the motor helps to keep the center of gravity of the entire device balanced, ensuring the stability of the system during operation. The driving motor 5 is fixed through a stable connection with the support frame 1, achieving good fixing effect. This arrangement of structure effectively reduces the influence of external factors such as mechanical vibration on the accuracy of automatic focusing.

[0053] For example, a high-precision assembly process can be employed during manufacturing to ensure that the drive motor 5 is accurately positioned and securely mounted on the upper portion of the support frame 1. At the same time, in order to ensure the stability of the motor during operation, additional shock-absorbing washers or a buffer structure such as a flexible coupling can be provided at the mounting position, thereby further reducing the possibility of vibration transmission and ensuring the overall performance of the autofocus system.

[0054] In actual operation, when the device is in use, the support frame 1 is used to support the entire focusing device. The stabilizing groove 2 is provided at the bottom end of the support frame 1 and detects changes in the liquid level through the internal float sensor 3 and transmits the information. The adjusting rod 4 is used to adjust the position of the focusing device, and the drive motor 5 mounted on the support frame 1 drives the adjusting rod 4 to move up and down, thereby achieving the automatic focusing function. The stabilizing groove 2 has a multi-layer structure and contains multiple shock-absorbing layers 6 to improve stability. The stabilizing groove 2 is provided with a liquid level adjusting mechanism on one side, including a liquid level adjusting valve 16, a drainage pipe 17, a return pipe 18, a temporary storage tank 19, and a circulating pump 20. The liquid level adjusting valve 16 controls the discharge of oil in the stabilizing groove 2 into the temporary storage tank 19, and at the same time the circulating pump 20 re-injects the temporarily stored oil into the stabilizing groove 2 through the return pipe 18, ensuring the stability of the oil level, and thereby maintaining the detection accuracy of the float sensor 3 and the overall working precision of the equipment.

[0055] The exemplary systems and methods of the present application have been specifically shown and described herein in connection with the exemplary embodiments, but it will be understood that many other modifications, modifications, and variations of the described systems and methods can be made therein by those skilled in the art without departing from the spirit and scope of the application as defined in the appended claims.

Claims

1. An electric discharge machine automatic focusing device, characterized by, The utility model relates to a kind of automatic focusing device, including: Support frame (1); Stable groove (2) is arranged at the bottom end of the support frame (1); Buoy sensor (3) is arranged in the stable groove (2), for detecting liquid level change and delivering information; Adjusting rod (4) is used to adjust the position of focusing device; Driving motor (5) is installed on the support frame (1), drives the adjusting rod (4) to move up and down to realize automatic focusing; The stable groove (2) includes a multilayer structure with multiple shock-absorbing layers (6);Wherein One side of the stable groove (2) is provided with liquid level adjusting mechanism, and the liquid level adjusting mechanism includes liquid level adjusting valve (16), drain pipe (17), backflow pipe (18), temporary storage tank (19) and circulating pump (20). The liquid level adjusting valve (16) is used to discharge the oil in the stable groove (2) into the temporary storage tank (19), and the circulating pump (20) re-injects the temporarily stored oil into the stable groove (2) through the backflow pipe (18).

2. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The bottom of the stable groove (2) is provided with a plurality of shock-absorbing pads (7).

3. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The buoy sensor (3) includes a floating body (8) and a detection probe (9). The floating body (8) can drive the detection probe (9) to move up and down when the liquid level changes, and the detection probe (9) monitors the change of liquid level in real time.

4. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The adjusting rod (4) includes a sliding rod (10) and a tooth block (11) arranged on the surface of the sliding rod (10).

5. An automatic focusing device for an electric spark machine according to claim 4, characterized in that: The driving motor (5) is connected to the tooth block (11) on the adjusting rod (4) through a transmission gear set (12).

6. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The bottom of the support frame (1) is provided with a plurality of shock-absorbing foot pads (13).

7. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The side wall of the stable groove (2) is provided with a transparent window (14).

8. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The top end of the adjusting rod (4) is provided with a focusing lens (15).

9. The automatic focusing device for electric spark machine according to claim 1, characterized in that: The driving motor (5) is installed on the upper part of the support frame (1).

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