An electro-hydraulic servo mechanism break-in system

Abstract

This invention discloses a break-in system for an electro-hydraulic servo mechanism, comprising an energy station, an oil filter system, and a break-in signal station. The energy station includes multiple sets of break-in components, with the input and output ends of each set connected to the output and input ends of the oil filter system, respectively. The oil filter system filters the hydraulic oil and supplies it to the break-in components. The hydraulic oil is transferred through an oil circuit to the electro-hydraulic servo mechanism, providing high-pressure energy. The break-in components include an oil pump, a valve group, a workpiece mounting position, and a pressure regulating device. The pressure regulating device adjusts the inlet and outlet pressures of the workpiece mounting position. The break-in signal station receives a first feedback signal from the electro-hydraulic servo mechanism and a position signal acquired through a process potentiometer. It compares and amplifies the first feedback signal and the position signal, outputs a first control signal, and sends the first control signal to the process servo valve via a break-in cable.

Description

Technical Field

[0001] This invention belongs to the field of electro-hydraulic servo mechanism technology, and specifically relates to an electro-hydraulic servo mechanism break-in system. Background Technology

[0002] The electro-hydraulic servo mechanism can be divided into four parts: energy source, actuator, control mechanism, and power amplifier assembly. Due to its structural characteristics, special working principle, and extremely high requirements for the cleanliness of its internal working environment, when the electro-hydraulic servo mechanism is powered on, problems such as abnormal jitter during performance testing of small signals and dynamic frequency sweep, blockage of the working oil circuit by foreign matter leading to non-action, and whistling of the electro-hydraulic servo valve often occur. Summary of the Invention

[0003] One objective of this invention is to provide a break-in system for an electro-hydraulic servo mechanism that can solve the technical problem of whistling in existing electro-hydraulic servo valves.

[0004] According to a first aspect of the present invention, an electro-hydraulic servo mechanism break-in system is provided, comprising an energy station, an oil filter system, and a break-in signal station;

[0005] The energy station includes multiple sets of break-in components, with the input and output ends of each set of break-in components connected to the output and input ends of the oil filter system, respectively.

[0006] The oil filter system is used to filter the hydraulic oil and input hydraulic oil into the break-in components. The hydraulic oil reaches the electro-hydraulic servo mechanism through the oil circuit transfer tooling, providing high-pressure energy to the electro-hydraulic servo mechanism.

[0007] The break-in components include an oil pump, valve assembly, workpiece mounting position, and pressure regulating device;

[0008] The workpiece mounting position is used to install the electro-hydraulic servo mechanism, and the oil pump is used to transfer the hydraulic oil output from the oil filter system to the electro-hydraulic servo mechanism.

[0009] The pressure regulating device is used to adjust the inlet and outlet pressures at the workpiece mounting position;

[0010] The break-in signal station is used to receive the first feedback signal from the electro-hydraulic servo mechanism and the position signal acquired by the process potentiometer. It compares and amplifies the first feedback signal and the position signal to output a first control signal. The first control signal is sent to the process servo valve through the break-in cable, thereby controlling the action components of the electro-hydraulic servo structure to reciprocate, so that high-pressure oil flows inside the electro-hydraulic servo mechanism and flushes the internal oil passage.

[0011] Optionally, it also includes a control circuit, which is used to acquire a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, a second control signal corresponding to the pressure adjustment target, and a low-end coil signal of the pressure regulating device, and outputs a high-end coil signal to the pressure regulating device according to the second feedback signal, the second control signal, and the low-end coil signal, so as to control the pressure regulating device to adjust the inlet pressure or outlet pressure according to the pressure adjustment target.

[0012] Optionally, the control circuit includes: a comparison module, a control signal input module, a coil high-end signal output module, and a coil low-end signal input module;

[0013] The control signal input module is connected to the control signal input terminal and is used to receive a second control signal corresponding to the pressure adjustment target, wherein the pressure adjustment target includes the inlet pressure or outlet pressure of the workpiece;

[0014] The comparison module is connected to the control signal input module and the feedback signal input terminal. The comparison module is used to receive a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, compare and amplify the second feedback signal with the second control signal, and output an amplified signal.

[0015] The low-end signal input module of the coil is connected to the high-end signal output module of the coil, and the low-end signal input module of the coil is used to send the low-end signal of the coil to the high-end signal output module of the coil.

[0016] The high-end signal output module of the coil is connected to the comparison module and is used to receive the amplified signal and output the corresponding high-end signal of the coil according to the amplified signal and the low-end signal of the coil, so as to adjust the inlet pressure or outlet pressure of the workpiece.

[0017] Optionally, the comparison module includes a first comparison module, a second comparison module, a third comparison module, and a fourth comparison module;

[0018] The control signal input module includes a first input module, a second input module, a third input module, and a fourth input module;

[0019] The input terminal of the first comparison module is connected to the feedback signal input terminal, the output terminal of the first comparison module is connected to the input terminal of the second comparison module, the first terminal of the first input module is connected to the control signal input terminal, and the second terminal of the first input module is connected to both the input terminal of the second comparison module and the first terminal of the second input module.

[0020] The output terminal of the second comparison module is connected to the input terminal of the third comparison module, and the second terminal of the second input module is connected to both the input terminal of the third comparison module and the first terminal of the third input module.

[0021] The output terminal of the third comparison module is connected to the input terminal of the fourth comparison module, and the second terminal of the third input module is connected to both the input terminal of the fourth comparison module and the first terminal of the fourth input module.

[0022] The second end of the fourth input module is connected to the output end of the fourth comparison module, and the output end of the fourth comparison module is connected to the high-side signal output module of the coil.

[0023] Optionally, the first input module includes a second resistor, and the first comparison module includes a first comparator, a first resistor, a third resistor, a sixth resistor, and a first capacitor;

[0024] The positive input terminal of the first comparator is connected to the first terminal of the first resistor and the feedback signal input terminal, respectively; the second terminal of the first resistor is grounded; and the negative input terminal of the first comparator is connected to the output terminal of the first comparator.

[0025] The output terminal of the first comparator is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the first terminal of the sixth resistor and the first terminal of the first capacitor, the second terminal of the first capacitor is connected to the second terminal of the sixth resistor, and the second terminal of the sixth resistor is connected to the second comparator module.

[0026] The first end of the second resistor is connected to the control signal input terminal, and the second end of the second resistor is connected to the second input module and the second end of the first capacitor, respectively.

[0027] Optionally, the second input module includes a fourth resistor, a fifth resistor, a second capacitor, and a third capacitor, and the second comparison module includes a second comparator and a seventh resistor;

[0028] The negative input terminal of the second comparator is connected to the second terminal of the sixth resistor, the positive input terminal of the second comparator is connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is grounded, and the output terminal of the second comparator is connected to the third comparison module.

[0029] The first end of the fourth resistor is connected to the second end of the second resistor. The second end of the fourth resistor is connected to the first end of the fifth resistor, the first end of the second capacitor, and the first end of the third capacitor. The second end of the fifth resistor is connected to the third input module and the second end of the second capacitor. The second end of the second capacitor is connected to the second end of the third capacitor. The second end of the third capacitor is connected to the output terminal of the second comparator.

[0030] Optionally, the third input module includes a thirteenth resistor, and the third comparison module includes a third comparator, a fourth capacitor, a fifth capacitor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourteenth resistor;

[0031] The first end of the ninth resistor is connected to the output of the second comparator. The second end of the ninth resistor is connected to the first ends of the fourth capacitor, the fifth capacitor, and the tenth resistor. The second end of the fourth capacitor is connected to the second end of the eleventh resistor. The second end of the fifth capacitor is connected to the negative input of the third comparator. The first end of the eleventh resistor is connected to the negative input of the third comparator. The second end of the eleventh resistor is connected to the output of the third comparator. The positive input of the third comparator is connected to the first end of the twelfth resistor. The second ends of the twelfth resistor and the tenth resistor are grounded. The output of the third comparator is connected to the first end of the fourteenth resistor. The second end of the fourteenth resistor is connected to the fourth comparison module.

[0032] The first end of the thirteenth resistor is connected to the second end of the fifth resistor, and the second end of the thirteenth resistor is connected to the second end of the fourteenth resistor and the fourth input module.

[0033] Optionally, the fourth input module includes a sixteenth resistor, and the fourth comparison module includes a fourth comparator, a fifteenth resistor, and a seventeenth resistor;

[0034] The first end of the sixteenth resistor is connected to the second end of the thirteenth resistor, and the second end of the sixteenth resistor is connected to the output of the fourth comparator.

[0035] The negative input terminal of the fourth comparator is connected to the second terminal of the fourteenth resistor, the positive input terminal of the fourth comparator is connected to the first terminal of the fifteenth resistor, the second terminal of the fifteenth resistor is grounded, the output terminal of the fourth comparator is connected to the first terminal of the seventeenth resistor, and the second terminal of the seventeenth resistor is connected to the high-side signal output module of the coil.

[0036] Optionally, the low-end signal input module of the coil includes an eighth resistor, a nineteenth resistor, and a sixth capacitor;

[0037] The first end of the eighth resistor is connected to the low-end signal input terminal of the coil, and the second end of the eighth resistor is grounded.

[0038] The first end of the nineteenth resistor is connected to the first end of the eighth resistor and the first end of the sixth capacitor, the second end of the sixth capacitor is connected to the second end of the nineteenth resistor, and the second end of the nineteenth resistor is connected to the second end of the seventeenth resistor.

[0039] Optionally, the high-side signal output module of the coil includes a microcontroller, an eighteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first diode, and a second diode;

[0040] Pin 5 of the microcontroller is connected to the second end of the seventeenth resistor, pin 6 of the microcontroller is connected to the first end of the eighteenth resistor, pin 7 of the microcontroller is connected to the first end of the twenty-second resistor, the second end of the twenty-second resistor is connected to the first end of the ninth capacitor and the -15V power supply respectively, and the second end of the eighteenth resistor and the second end of the ninth capacitor are grounded.

[0041] Pin 10 of the microcontroller is connected to a -15V power supply. Pin 8 of the microcontroller is connected to the first end of the 23rd resistor. The second end of the 23rd resistor is connected to a -15V power supply. Pin 9 of the microcontroller is connected to the first end of the 20th resistor. The second end of the 20th resistor is connected to the second end of the 23rd resistor and the positive terminal of the second diode. The negative terminal of the second diode is connected to pin 11 of the microcontroller. Pin 11 of the microcontroller is used to output the high-side signal of the coil.

[0042] Pin 12 of the microcontroller is connected to a +15V power supply and the first terminal of the eighth capacitor. The second terminal of the eighth capacitor is grounded. Pin 1 of the microcontroller is connected to the first terminal of the twenty-first resistor. The second terminal of the twenty-first resistor is connected to a +15V power supply. Pin 2 of the microcontroller is connected to the first terminal of the seventh capacitor. The second terminal of the seventh capacitor is connected to pin 11 of the microcontroller and the positive terminal of the first diode. The negative terminal of the first diode is connected to the second terminal of the twenty-first resistor.

[0043] The beneficial effects of this invention are as follows: the new electro-hydraulic servo mechanism break-in equipment has evolved from the original independent break-in pump station into a multi-channel integrated break-in system, which can support up to eight electro-hydraulic servo mechanisms to break in at the same time. In addition, with the addition of a cooling system, the break-in equipment can work for a long time, which greatly improves the break-in efficiency while reducing the input of human resources.

[0044] The integrated design of the hydraulic system and the digital display-based visual control center make operation simple, convenient, and autonomous, reducing labor intensity. The entire break-in process is monitored, allowing for immediate detection and resolution of problems, ensuring the reliability and safety of the break-in process. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the break-in system structure of the electro-hydraulic servo mechanism of the present invention.

[0046] Figure 2 This is a schematic diagram of the control circuit of the electro-hydraulic servo mechanism break-in system of the present invention. Detailed Implementation

[0047] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0048] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0049] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0051] In the specification and claims of this invention, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0052] The electro-hydraulic servo mechanism can be divided into four parts: energy source, actuator, control mechanism, and power amplifier assembly. Due to its structural characteristics, special working principle, and high requirements for the cleanliness of its internal working environment, problems such as abnormal jitter during performance testing of small signals and dynamic frequency sweep, blockage of the working oil circuit by excess material leading to non-action, and whistling of the electro-hydraulic servo valve often occur when the electro-hydraulic servo mechanism is powered on.

[0053] To address this, a "break-in" process was added to the workflow. Before formal assembly, the electro-hydraulic servo mechanism was connected to high-pressure oil to flush its internal oil pipelines, driving the operating mechanism to reciprocate, simulating the working state of the electro-hydraulic servo mechanism, thus generating excess material in advance, and then cleaning to remove the excess material.

[0054] Currently, the flushing oil circuit equipment uses a break-in pump station as the power supply. With the increase in the types and quantities of electro-hydraulic servo mechanisms produced, the main technical problems in the break-in process of electro-hydraulic servo mechanisms are: 1. The break-in pump station is a single independent unit, which can only be broken in one by one, resulting in low break-in efficiency; 2. Poor versatility, unable to adapt to the break-in of various models and different scenarios; 3. Poor controllability and safety.

[0055] Currently, the power supply equipment for break-in is a relatively primitive break-in pump station, and it is a standalone unit. It can only perform the break-in process of the electro-hydraulic servo mechanism one-to-one, resulting in poor integration. In addition, the break-in pump station is prone to overheating during operation and cannot operate continuously for long periods of time. It can only support the break-in of a maximum of three electro-hydraulic servo mechanisms per day, which is extremely inefficient. Frequent disassembly and assembly during break-in require a large investment of human resources.

[0056] The break-in pump station lacks a feedback command signal station, limiting it to single-state action commands for different models of electro-hydraulic servo mechanisms. This results in low adaptability and poor processability due to the inability to adapt to various break-in models. Furthermore, the lack of a visual digital display control terminal during operation means that only the start / stop switch can be activated in case of a fault, hindering effective control over the break-in process and leading to low reliability and safety.

[0057] like Figure 1 As shown in the figure, this embodiment introduces an electro-hydraulic servo mechanism break-in system, including an energy station, an oil filter system, and a break-in signal station.

[0058] The energy station includes multiple sets of break-in components, with the input and output ends of each set of components connected to the output and input ends of the oil filter system, respectively.

[0059] The oil filter system is used to filter the hydraulic oil and input hydraulic oil into the break-in components. The hydraulic oil reaches the electro-hydraulic servo mechanism through the oil circuit transfer tooling, providing high-pressure energy to the electro-hydraulic servo mechanism.

[0060] The break-in components include an oil pump, valve assembly, workpiece mounting position, and pressure regulating device.

[0061] The workpiece mounting position is used to install the electro-hydraulic servo mechanism, and the oil pump is used to transfer the hydraulic oil output from the oil filter system to the electro-hydraulic servo mechanism.

[0062] The pressure regulating device is used to adjust the inlet and outlet pressures at the workpiece mounting position.

[0063] The break-in signal station is used to receive the first feedback signal from the electro-hydraulic servo mechanism and the position signal acquired by the process potentiometer. It compares and amplifies the first feedback signal and the position signal to output a first control signal. The first control signal is sent to the process servo valve through the break-in cable, thereby controlling the action components of the electro-hydraulic servo structure to reciprocate, so that high-pressure oil flows inside the electro-hydraulic servo mechanism and flushes the internal oil passage.

[0064] like Figure 1 As shown, the oil filtration system includes an oil tank, a filter pump, a valve assembly, and a cooler. Hydraulic oil in oil tank A enters oil pump A through valve 1, and oil pump A then transports the hydraulic oil through the pipeline to the workpiece position. Figure 1 The workpiece position in the diagram corresponds to the position of the electro-hydraulic servo mechanism. When the electro-hydraulic servo mechanism needs to be broken in, it is installed at the workpiece position.

[0065] Users can set the inlet and outlet pressures in the operation interface of the break-in system. The pressure regulating device adjusts according to the inlet and outlet pressures set by the user, and can be adapted to various models of electro-hydraulic servo mechanisms.

[0066] The electro-hydraulic servo mechanism break-in system of this invention includes four sets of break-in components, which operate independently without affecting each other. The oil inlet and outlet of each workstation can be divided into two streams, thus the system can simultaneously break in up to eight electro-hydraulic servo mechanisms. During break-in, the operating status of each component can be digitally displayed on the operating terminal, enabling autonomous and controllable break-in process and ensuring reliability and safety.

[0067] In this embodiment, a control circuit is also included. The control circuit is used to acquire a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, a second control signal corresponding to the pressure adjustment target, and a low-end coil signal of the pressure regulating device. Based on the second feedback signal, the second control signal, and the low-end coil signal, the control circuit outputs a high-end coil signal to the pressure regulating device to control the pressure regulating device to adjust the inlet pressure or outlet pressure according to the pressure adjustment target.

[0068] like Figure 2 As shown, the electro-hydraulic servo mechanism break-in system includes four control circuits, each corresponding to a workstation in the break-in system. All four control circuits employ the same circuit structure design.

[0069] The coil is the coil of the pressure regulating device. The real-time status of the break-in system is reflected through a second feedback signal. This real-time status is taken into account when calculating the high-end signal of the coil, resulting in more accurate pressure control.

[0070] In this embodiment, the control circuit includes: a comparison module, a control signal input module, a coil high-end signal output module, and a coil low-end signal input module;

[0071] The control signal input module is connected to the control signal input terminal and is used to receive a second control signal corresponding to the pressure adjustment target, wherein the pressure adjustment target includes the inlet pressure or outlet pressure of the workpiece;

[0072] The comparison module is connected to the control signal input module and the feedback signal input terminal. The comparison module is used to receive a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, compare and amplify the second feedback signal with the second control signal, and output an amplified signal.

[0073] The low-end signal input module of the coil is connected to the high-end signal output module of the coil, and the low-end signal input module of the coil is used to send the low-end signal of the coil to the high-end signal output module of the coil.

[0074] The high-end signal output module of the coil is connected to the comparison module and is used to receive the amplified signal and output the corresponding high-end signal of the coil according to the amplified signal and the low-end signal of the coil, so as to adjust the inlet pressure or outlet pressure of the workpiece.

[0075] After the user sets the inlet and outlet pressures in the operation interface of the break-in system, a second control signal corresponding to the pressure adjustment target is automatically generated. The comparison module receives the second control signal and a second feedback signal that indicates the current state of the break-in system, and outputs an amplified signal based on the second feedback signal and the second control signal.

[0076] Then, the coil high-end signal output module outputs the coil high-end signal based on the amplified signal and the coil low-end signal, thereby controlling the pressure regulating device to adjust the inlet and outlet pressures.

[0077] In this embodiment, the comparison module includes a first comparison module, a second comparison module, a third comparison module, and a fourth comparison module;

[0078] The control signal input module includes a first input module, a second input module, a third input module, and a fourth input module;

[0079] The input terminal of the first comparison module is connected to the feedback signal input terminal, the output terminal of the first comparison module is connected to the input terminal of the second comparison module, the first terminal of the first input module is connected to the control signal input terminal, and the second terminal of the first input module is connected to both the input terminal of the second comparison module and the first terminal of the second input module.

[0080] The output terminal of the second comparison module is connected to the input terminal of the third comparison module, and the second terminal of the second input module is connected to both the input terminal of the third comparison module and the first terminal of the third input module.

[0081] The output terminal of the third comparison module is connected to the input terminal of the fourth comparison module, and the second terminal of the third input module is connected to both the input terminal of the fourth comparison module and the first terminal of the fourth input module.

[0082] The second end of the fourth input module is connected to the output end of the fourth comparison module, and the output end of the fourth comparison module is connected to the high-side signal output module of the coil.

[0083] After passing through the control signal input module, the second control signal is transmitted to the first comparison module, the second comparison module, the third comparison module, and the fourth comparison module, respectively.

[0084] The first comparison module is used to receive the second feedback signal, amplify the second feedback signal, and output the amplified result to the second comparison module.

[0085] After passing through the first input module, the second control signal is sent to the second comparison module. The second comparison module compares and amplifies the second control signal that has passed through the first input module and the amplified result output by the first comparison module, and outputs the amplified result to the third comparison module.

[0086] The second control signal is sent to the third comparison module after passing through the first input module and the second input module in sequence. The third comparison module compares and amplifies the second control signal that has passed through the first input module and the second input module and the amplification result output by the second comparison module, and outputs the amplification result to the fourth comparison module.

[0087] The fourth comparison module amplifies the amplified result output by the third comparison module and finally outputs the amplified signal to the high-side signal output module of the coil.

[0088] This invention improves the accuracy of the amplified signal by employing a multi-stage comparison amplification circuit to perform multi-stage comparison amplification on the second control signal and the second feedback signal.

[0089] In this embodiment, the first input module includes a second resistor, and the first comparison module includes a first comparator, a first resistor, a third resistor, a sixth resistor, and a first capacitor;

[0090] The positive input terminal of the first comparator is connected to the first terminal of the first resistor and the feedback signal input terminal, respectively; the second terminal of the first resistor is grounded; and the negative input terminal of the first comparator is connected to the output terminal of the first comparator.

[0091] The output terminal of the first comparator is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the first terminal of the sixth resistor and the first terminal of the first capacitor, the second terminal of the first capacitor is connected to the second terminal of the sixth resistor, and the second terminal of the sixth resistor is connected to the second comparator module.

[0092] The first end of the second resistor is connected to the control signal input terminal, and the second end of the second resistor is connected to the second input module and the second end of the first capacitor, respectively.

[0093] In this embodiment, the second input module includes a fourth resistor, a fifth resistor, a second capacitor, and a third capacitor, and the second comparison module includes a second comparator and a seventh resistor;

[0094] The negative input terminal of the second comparator is connected to the second terminal of the sixth resistor, the positive input terminal of the second comparator is connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is grounded, and the output terminal of the second comparator is connected to the third comparison module.

[0095] The first end of the fourth resistor is connected to the second end of the second resistor. The second end of the fourth resistor is connected to the first end of the fifth resistor, the first end of the second capacitor, and the first end of the third capacitor. The second end of the fifth resistor is connected to the third input module and the second end of the second capacitor. The second end of the second capacitor is connected to the second end of the third capacitor. The second end of the third capacitor is connected to the output terminal of the second comparator.

[0096] In this embodiment, the third input module includes a thirteenth resistor, and the third comparison module includes a third comparator, a fourth capacitor, a fifth capacitor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourteenth resistor.

[0097] The first end of the ninth resistor is connected to the output of the second comparator. The second end of the ninth resistor is connected to the first ends of the fourth capacitor, the fifth capacitor, and the tenth resistor. The second end of the fourth capacitor is connected to the second end of the eleventh resistor. The second end of the fifth capacitor is connected to the negative input of the third comparator. The first end of the eleventh resistor is connected to the negative input of the third comparator. The second end of the eleventh resistor is connected to the output of the third comparator. The positive input of the third comparator is connected to the first end of the twelfth resistor. The second ends of the twelfth resistor and the tenth resistor are grounded. The output of the third comparator is connected to the first end of the fourteenth resistor. The second end of the fourteenth resistor is connected to the fourth comparison module.

[0098] The first end of the thirteenth resistor is connected to the second end of the fifth resistor, and the second end of the thirteenth resistor is connected to the second end of the fourteenth resistor and the fourth input module.

[0099] In this embodiment, the fourth input module includes a sixteenth resistor, and the fourth comparison module includes a fourth comparator, a fifteenth resistor, and a seventeenth resistor;

[0100] The first end of the sixteenth resistor is connected to the second end of the thirteenth resistor, and the second end of the sixteenth resistor is connected to the output of the fourth comparator.

[0101] The negative input terminal of the fourth comparator is connected to the second terminal of the fourteenth resistor, the positive input terminal of the fourth comparator is connected to the first terminal of the fifteenth resistor, the second terminal of the fifteenth resistor is grounded, the output terminal of the fourth comparator is connected to the first terminal of the seventeenth resistor, and the second terminal of the seventeenth resistor is connected to the high-side signal output module of the coil.

[0102] In this embodiment, the coil low-end signal input module includes an eighth resistor, a nineteenth resistor, and a sixth capacitor;

[0103] The first end of the eighth resistor is connected to the low-end signal input terminal of the coil, and the second end of the eighth resistor is grounded.

[0104] The first end of the nineteenth resistor is connected to the first end of the eighth resistor and the first end of the sixth capacitor, the second end of the sixth capacitor is connected to the second end of the nineteenth resistor, and the second end of the nineteenth resistor is connected to the second end of the seventeenth resistor.

[0105] In this embodiment, the high-side signal output module of the coil includes a microcontroller, an eighteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first diode, and a second diode;

[0106] Pin 5 of the microcontroller is connected to the second end of the seventeenth resistor, pin 6 of the microcontroller is connected to the first end of the eighteenth resistor, pin 7 of the microcontroller is connected to the first end of the twenty-second resistor, the second end of the twenty-second resistor is connected to the first end of the ninth capacitor and the -15V power supply respectively, and the second end of the eighteenth resistor and the second end of the ninth capacitor are grounded.

[0107] Pin 10 of the microcontroller is connected to a -15V power supply. Pin 8 of the microcontroller is connected to the first end of the 23rd resistor. The second end of the 23rd resistor is connected to a -15V power supply. Pin 9 of the microcontroller is connected to the first end of the 20th resistor. The second end of the 20th resistor is connected to the second end of the 23rd resistor and the positive terminal of the second diode. The negative terminal of the second diode is connected to pin 11 of the microcontroller. Pin 11 of the microcontroller is used to output the high-side signal of the coil.

[0108] Pin 12 of the microcontroller is connected to a +15V power supply and the first terminal of the eighth capacitor. The second terminal of the eighth capacitor is grounded. Pin 1 of the microcontroller is connected to the first terminal of the twenty-first resistor. The second terminal of the twenty-first resistor is connected to a +15V power supply. Pin 2 of the microcontroller is connected to the first terminal of the seventh capacitor. The second terminal of the seventh capacitor is connected to pin 11 of the microcontroller and the positive terminal of the first diode. The negative terminal of the first diode is connected to the second terminal of the twenty-first resistor.

[0109] The new electro-hydraulic servo mechanism break-in equipment has evolved from the original independent break-in pump station into a multi-channel integrated break-in system, which can support up to 8 electro-hydraulic servo mechanisms to break in simultaneously. With the addition of a cooling system, the break-in equipment can work for a long time, greatly improving break-in efficiency while reducing the input of human resources.

[0110] The integrated design of the hydraulic system and the digital display-based visual control center make operation simple, convenient, and autonomous, reducing labor intensity. The entire break-in process is monitored, allowing for immediate detection and resolution of problems, ensuring the reliability and safety of the break-in process.

[0111] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

[0112] Those skilled in the art will recognize that the modules and algorithm steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0113] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the above-described apparatus and equipment can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0114] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0115] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0116] In addition, the functional modules in the embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0117] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0118] 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 invention involved in this application is not limited to 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.

[0119] It should be understood that the sequence numbers of the steps in the invention's content and embodiments do not absolutely imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The foregoing description of embodiments of this disclosure has been provided for illustrative and descriptive purposes. The foregoing description is not exhaustive and is not intended to limit this disclosure to the exact form disclosed. Various modifications and variations may exist based on the foregoing teachings, or various modifications and variations may be derived from the practice of this disclosure. These embodiments were chosen and described to illustrate the principles of this disclosure and its practical application, so that those skilled in the art can utilize this disclosure in various implementations and modifications suitable for the specific purpose of the concept.

Claims

1. A break-in system for an electro-hydraulic servo mechanism, characterized in that, This includes the power supply unit, oil filter system, and break-in signal unit; The energy station includes multiple sets of break-in components, with the input and output ends of each set of break-in components connected to the output and input ends of the oil filter system, respectively. The oil filter system is used to filter the hydraulic oil and input hydraulic oil into the break-in components. The hydraulic oil reaches the electro-hydraulic servo mechanism through the oil circuit transfer tooling, providing high-pressure energy to the electro-hydraulic servo mechanism. The break-in components include an oil pump, valve assembly, workpiece mounting position, and pressure regulating device; The workpiece mounting position is used to install the electro-hydraulic servo mechanism, and the oil pump is used to transfer the hydraulic oil output from the oil filter system to the electro-hydraulic servo mechanism. The pressure regulating device is used to adjust the inlet and outlet pressures at the workpiece mounting position; The break-in signal station is used to receive the first feedback signal of the electro-hydraulic servo mechanism and the position signal collected by the process potentiometer. It compares and amplifies the first feedback signal and the position signal to output a first control signal. The first control signal is sent to the process servo valve through the break-in cable, thereby controlling the action components of the electro-hydraulic servo structure to reciprocate, so that the high-pressure oil flows inside the electro-hydraulic servo mechanism and flushes the internal oil passage. It also includes a control circuit, which is used to acquire a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, a second control signal corresponding to the pressure adjustment target, and a coil low-end signal of the pressure regulating device. Based on the second feedback signal, the second control signal, and the coil low-end signal, the control circuit outputs a coil high-end signal to the pressure regulating device to control the pressure regulating device to adjust the inlet pressure or outlet pressure according to the pressure adjustment target. The control circuit includes: a comparison module, a control signal input module, a coil high-end signal output module, and a coil low-end signal input module; The control signal input module is connected to the control signal input terminal and is used to receive a second control signal corresponding to the pressure adjustment target, wherein the pressure adjustment target includes the inlet pressure or outlet pressure of the workpiece mounting position; The comparison module is connected to the control signal input module and the feedback signal input terminal. The comparison module is used to receive a second feedback signal corresponding to the real-time status of the electro-hydraulic servo mechanism break-in system, compare and amplify the second feedback signal with the second control signal, and output an amplified signal. The low-end signal input module of the coil is connected to the high-end signal output module of the coil, and the low-end signal input module of the coil is used to send the low-end signal of the coil to the high-end signal output module of the coil. The coil high-end signal output module is connected to the comparison module and is used to receive the amplified signal and output the corresponding coil high-end signal according to the amplified signal and the coil low-end signal to adjust the inlet pressure or outlet pressure of the workpiece mounting position.

2. The electro-hydraulic servo mechanism break-in system according to claim 1, characterized in that, The comparison module includes a first comparison module, a second comparison module, a third comparison module, and a fourth comparison module; The control signal input module includes a first input module, a second input module, a third input module, and a fourth input module; The input terminal of the first comparison module is connected to the feedback signal input terminal, the output terminal of the first comparison module is connected to the input terminal of the second comparison module, the first terminal of the first input module is connected to the control signal input terminal, and the second terminal of the first input module is connected to both the input terminal of the second comparison module and the first terminal of the second input module. The output terminal of the second comparison module is connected to the input terminal of the third comparison module, and the second terminal of the second input module is connected to both the input terminal of the third comparison module and the first terminal of the third input module. The output terminal of the third comparison module is connected to the input terminal of the fourth comparison module, and the second terminal of the third input module is connected to both the input terminal of the fourth comparison module and the first terminal of the fourth input module. The second end of the fourth input module is connected to the output end of the fourth comparison module, and the output end of the fourth comparison module is connected to the high-side signal output module of the coil.

3. The electro-hydraulic servo mechanism break-in system according to claim 2, characterized in that, The first input module includes a second resistor, and the first comparison module includes a first comparator, a first resistor, a third resistor, a sixth resistor, and a first capacitor; The positive input terminal of the first comparator is connected to the first terminal of the first resistor and the feedback signal input terminal, respectively; the second terminal of the first resistor is grounded; and the negative input terminal of the first comparator is connected to the output terminal of the first comparator. The output terminal of the first comparator is connected to the first terminal of the third resistor, the second terminal of the third resistor is connected to the first terminal of the sixth resistor and the first terminal of the first capacitor, the second terminal of the first capacitor is connected to the second terminal of the sixth resistor, and the second terminal of the sixth resistor is connected to the second comparison module. The first end of the second resistor is connected to the control signal input terminal, and the second end of the second resistor is connected to the second input module and the second end of the first capacitor, respectively.

4. The electro-hydraulic servo mechanism break-in system according to claim 3, characterized in that, The second input module includes a fourth resistor, a fifth resistor, a second capacitor, and a third capacitor; the second comparison module includes a second comparator and a seventh resistor. The negative input terminal of the second comparator is connected to the second terminal of the sixth resistor, the positive input terminal of the second comparator is connected to the first terminal of the seventh resistor, the second terminal of the seventh resistor is grounded, and the output terminal of the second comparator is connected to the third comparison module. The first end of the fourth resistor is connected to the second end of the second resistor. The second end of the fourth resistor is connected to the first end of the fifth resistor, the first end of the second capacitor, and the first end of the third capacitor. The second end of the fifth resistor is connected to the third input module and the second end of the second capacitor. The second end of the second capacitor is connected to the second end of the third capacitor. The second end of the third capacitor is connected to the output terminal of the second comparator.

5. The electro-hydraulic servo mechanism break-in system according to claim 4, characterized in that, The third input module includes a thirteenth resistor, and the third comparison module includes a third comparator, a fourth capacitor, a fifth capacitor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourteenth resistor. The first end of the ninth resistor is connected to the output of the second comparator. The second end of the ninth resistor is connected to the first ends of the fourth capacitor, the fifth capacitor, and the tenth resistor. The second end of the fourth capacitor is connected to the second end of the eleventh resistor. The second end of the fifth capacitor is connected to the negative input of the third comparator. The first end of the eleventh resistor is connected to the negative input of the third comparator. The second end of the eleventh resistor is connected to the output of the third comparator. The positive input of the third comparator is connected to the first end of the twelfth resistor. The second ends of the twelfth resistor and the tenth resistor are grounded. The output of the third comparator is connected to the first end of the fourteenth resistor. The second end of the fourteenth resistor is connected to the fourth comparison module. The first end of the thirteenth resistor is connected to the second end of the fifth resistor, and the second end of the thirteenth resistor is connected to the second end of the fourteenth resistor and the fourth input module.

6. The electro-hydraulic servo mechanism break-in system according to claim 5, characterized in that, The fourth input module includes a sixteenth resistor, and the fourth comparison module includes a fourth comparator, a fifteenth resistor, and a seventeenth resistor; The first end of the sixteenth resistor is connected to the second end of the thirteenth resistor, and the second end of the sixteenth resistor is connected to the output of the fourth comparator. The negative input terminal of the fourth comparator is connected to the second terminal of the fourteenth resistor, the positive input terminal of the fourth comparator is connected to the first terminal of the fifteenth resistor, the second terminal of the fifteenth resistor is grounded, the output terminal of the fourth comparator is connected to the first terminal of the seventeenth resistor, and the second terminal of the seventeenth resistor is connected to the high-side signal output module of the coil.

7. The electro-hydraulic servo mechanism break-in system according to claim 6, characterized in that, The coil low-end signal input module includes an eighth resistor, a nineteenth resistor, and a sixth capacitor; The first end of the eighth resistor is connected to the low-end signal input terminal of the coil, and the second end of the eighth resistor is grounded. The first end of the nineteenth resistor is connected to the first end of the eighth resistor and the first end of the sixth capacitor, the second end of the sixth capacitor is connected to the second end of the nineteenth resistor, and the second end of the nineteenth resistor is connected to the second end of the seventeenth resistor.

8. The electro-hydraulic servo mechanism break-in system according to claim 7, characterized in that, The coil high-side signal output module includes a microcontroller, an eighteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first diode, and a second diode; Pin 5 of the microcontroller is connected to the second end of the seventeenth resistor, pin 6 of the microcontroller is connected to the first end of the eighteenth resistor, pin 7 of the microcontroller is connected to the first end of the twenty-second resistor, the second end of the twenty-second resistor is connected to the first end of the ninth capacitor and the -15V power supply respectively, and the second end of the eighteenth resistor and the second end of the ninth capacitor are grounded. Pin 10 of the microcontroller is connected to a -15V power supply. Pin 8 of the microcontroller is connected to the first end of the 23rd resistor. The second end of the 23rd resistor is connected to a -15V power supply. Pin 9 of the microcontroller is connected to the first end of the 20th resistor. The second end of the 20th resistor is connected to the second end of the 23rd resistor and the positive terminal of the second diode. The negative terminal of the second diode is connected to pin 11 of the microcontroller. Pin 11 of the microcontroller is used to output the high-side signal of the coil. Pin 12 of the microcontroller is connected to a +15V power supply and the first terminal of the eighth capacitor. The second terminal of the eighth capacitor is grounded. Pin 1 of the microcontroller is connected to the first terminal of the twenty-first resistor. The second terminal of the twenty-first resistor is connected to a +15V power supply. Pin 2 of the microcontroller is connected to the first terminal of the seventh capacitor. The second terminal of the seventh capacitor is connected to pin 11 of the microcontroller and the positive terminal of the first diode. The negative terminal of the first diode is connected to the second terminal of the twenty-first resistor.

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