Automatic cutting control system

By designing an automatic cutting control system, the forward and reverse rotation of the motor and the automatic/manual mode switching were realized, solving the problem of the single operation mode of the existing cutting machine control system and improving the working efficiency and flexibility of the cutting machine.

CN224232118UActive Publication Date: 2026-05-12徐斌 +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
徐斌
Filing Date
2025-06-30
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The existing cutting machine control system cannot switch the motor forward/reverse or switch between automatic/manual modes, resulting in a single operating mode that cannot meet diverse operational needs.

Method used

An automatic cutting control system was designed, including a drive module, a control module, a forward/reverse switching switch, an automatic/manual switching switch, a main handle start switch, and a battery pack. It adopts an STM32F103C8T6 chip and realizes diversified motor control through forward/reverse switching circuit, automatic/manual switching circuit, main handle start circuit, and drive start/stop circuit.

Benefits of technology

It enables the motor to switch between forward and reverse rotation and between automatic and manual modes, meeting the diverse needs of operators and improving the working efficiency and flexibility of the cutting machine.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224232118U_ABST
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Abstract

The utility model belongs to the technical field of cutting machines, and particularly relates to an automatic cutting control system. Comprising a driving module connected with a brushless motor of the cutting machine; the control module is connected with the driving module and is used for driving the brushless motor to work; the forward / reverse rotation change-over switch is connected with the control module so as to perform forward / reverse rotation change-over on the brushless motor; the automatic / manual change-over switch is connected with the control module so as to carry out automatic / manual mode switching on the working mode of the brushless motor; the main handle starting switch is connected with the control module so as to start the brushless motor to work; and the battery pack is connected with the driving module and the control module so as to provide a working power supply. According to the utility model, positive / negative rotation switching and automatic / manual mode switching of the motor can be realized, so that operators can conveniently select corresponding working modes according to requirements.
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Description

Technical Field

[0001] This utility model belongs to the field of cutting machine technology, and specifically relates to an automatic cutting control system. Background Technology

[0002] Rail cutting machines are indispensable during the laying and maintenance of steel rails. The quality and efficiency of rail cutting directly affect the quality and progress of the project.

[0003] The existing control systems that drive cutting machines mostly consist of a motor drive module, a controller, and a start / stop switch. They have a single working mode and cannot switch between forward / reverse rotation and automatic / manual modes of the cutting machine motor. Utility Model Content

[0004] The purpose of this invention is to provide an automatic cutting control system and a mobile phone. This invention can realize the forward / reverse switching of the motor and the automatic / manual mode switching, so as to facilitate the operator to select the corresponding working mode according to the needs.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic cutting control system, comprising:

[0006] The drive module is connected to the brushless motor of the cutting machine;

[0007] A control module, connected to the drive module, is used to drive the brushless motor to work;

[0008] A forward / reverse switching switch is connected to the control module to switch the brushless motor between forward and reverse directions;

[0009] An automatic / manual switching switch is connected to the control module to switch the working mode of the brushless motor between automatic and manual modes.

[0010] The main handle start switch is connected to the control module to start the brushless motor.

[0011] The battery pack is connected to the drive module and the control module to provide operating power.

[0012] Preferably, the control module uses STM32F103C8T6 chips U6A and U6B.

[0013] Preferably, it further includes a forward / reverse switching circuit, which includes: resistors Rfr1 to Rfr4, transistor Qfr1, and interface JP7; one end of resistor Rfr1 is connected to the DirCtrl signal, and the other end is connected to the base of transistor Qfr1. The emitter of transistor Qfr1 is grounded. The collector of transistor Qfr1 is connected to one end of resistors Rfr2 and Rfr3. The other end of resistor Rfr2 is connected to a +5V power supply. The other end of resistor Rfr3 is connected to pin 1 of interface JP7. Pin 2 of interface JP7 is connected to one end of resistor Rfr4. The other end of resistor Rfr4 is connected to the DirLED signal. Pin 3 of interface JP7 is connected to a 3.3V power supply.

[0014] Preferably, it also includes an automatic / manual switching circuit, which includes a resistor R11 and a resistor R13. One end of the resistor R11 is connected to the DIR signal, and the other end is connected to one end of the resistor R13. The other end of the resistor R13 is connected to a 3.3V power supply.

[0015] Preferably, it also includes a main handle start circuit, which includes resistors R14 to R15; one end of resistor R14 is connected to a 3.3V power supply, the other end is connected to one end of resistor R15, and the other end of resistor R15 is connected to an EN enable signal.

[0016] Preferably, it further includes a drive start / stop circuit, which includes: resistors Rj1 to Rj4, transistors Q1 to Q2, relays SRD1 to SRD2, diodes D1 to D2, and interfaces JP5 to JP6; one end of resistor Rj1 is connected to pin 4 of relay SRD1, and the other end is connected to the collector of transistor Q1 and one end of diode D1. The other end of diode D1 and pin 1 of relay SRD1 are connected to a 12V power supply. The emitter of transistor Q1 is grounded. The base of transistor Q1 is connected to one end of resistor Rj3. The other end of resistor Rj3 is connected to the Ctrl2 signal. Pins 1, 2, and 3 of interface JP6 are connected to pins 2, 3, and 5 of relay SRD1, respectively.

[0017] One end of resistor Rj2 is connected to pin 4 of relay SRD2, and the other end is connected to the collector of transistor Q2 and one end of diode D2. The other end of diode D2 and pin 1 of relay SRD2 are connected to a 12V power supply. The emitter of transistor Q2 is grounded, and the base of transistor Q2 is connected to one end of resistor Rj4. The other end of resistor Rj4 is connected to the Ctrl1 signal. Pins 1, 2, and 3 of interface JP5 are connected to pins 2, 3, and 5 of relay SRD2, respectively.

[0018] Preferably, the system also includes a remote controller, which is wirelessly connected to the control module.

[0019] Preferably, it also includes a power supply circuit, which includes a 72V to 12V circuit, a 12V to 5V circuit, and a 5V to 3.3V circuit connected in sequence. The 72V to 12V circuit uses a U3012S power chip, the 12V to 5V circuit uses an LM7805 power chip, and the 5V to 3.3V circuit uses an AS1117 power chip.

[0020] Preferably, it also includes a buzzer, a forward / reverse indicator light, and an automatic / manual indicator light, which are respectively connected to the control module.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] This utility model connects a control module and a drive module to drive a brushless motor; a forward / reverse switching switch is connected to the control module to switch the brushless motor between forward and reverse directions; an automatic / manual switching switch is connected to the control module to switch the working mode of the brushless motor between automatic and manual modes; thus, it realizes the diversification of the working modes of the rail cutting machine during cutting operations to meet the needs of operators. Attached Figure Description

[0023] Figure 1 This is a circuit block diagram of an automatic cutting control system according to this utility model.

[0024] Figure 2 This is the circuit diagram of the STM32F103C8T6 chip U6A in the control module of this utility model.

[0025] Figure 3 This is the circuit diagram of the STM32F103C8T6 chip U6B in the control module of this utility model.

[0026] Figure 4 This is a circuit diagram of the forward / reverse switching circuit of this utility model.

[0027] Figure 5 This is a circuit diagram of the automatic / manual mode switching circuit of this utility model.

[0028] Figure 6 This is the circuit diagram of the main handle start circuit of this utility model.

[0029] Figure 7 This is a circuit diagram of the drive start / stop circuit of this utility model.

[0030] Figure 8 This is the circuit diagram of the power supply circuit of this utility model.

[0031] In the diagram: 1-Drive module, 2-Control module, 3-Forward / Reverse switch, 4-Automatic / Manual switch, 5-Main handle start switch, 6-Battery pack, 7-Brushless motor. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0033] like Figures 1-8 As shown, this utility model embodiment specifically provides an automatic cutting control system, including:

[0034] Drive module 1 is connected to the brushless motor 7 of the cutting machine;

[0035] Control module 2, connected to drive module 1, is used to drive brushless motor 7 to work;

[0036] Forward / reverse switching switch 3 is connected to control module 2 to switch the brushless motor 7 between forward and reverse directions;

[0037] Automatic / manual switch 4 is connected to control module 2 to switch the working mode of brushless motor 7 between automatic and manual modes;

[0038] The main handle start switch 5 is connected to the control module 2 to start the brushless motor 7.

[0039] Battery pack 6 is connected to drive module 1 and control module 2 to provide operating power.

[0040] Control module 2 uses STM32F103C8T6 chips U6A and U6B.

[0041] It also includes a forward / reverse switching circuit, which consists of resistors Rfr1 to Rfr4, transistor Qfr1, and interface JP7. One end of resistor Rfr1 is connected to the DirCtrl signal, and the other end is connected to the base of transistor Qfr1. The emitter of transistor Qfr1 is grounded. The collector of transistor Qfr1 is connected to one end of resistors Rfr2 and Rfr3. The other end of resistor Rfr2 is connected to a +5V power supply. The other end of resistor Rfr3 is connected to pin 1 of interface JP7. Pin 2 of interface JP7 is connected to one end of resistor Rfr4, and the other end of resistor Rfr4 is connected to the DirLED signal. Pin 3 of interface JP7 is connected to a 3.3V power supply. The DirCtrl signal is the input signal that controls forward and reverse rotation. When the DirCtrl signal is low, the base of transistor Qfr1 receives a low-level signal through resistor Rfr1, and transistor Qfr1 is in the off state. When the DirCtrl signal becomes high, current flows through resistor Rfr1 into the base of transistor Qfr1, turning on transistor Qfr1. The aforementioned forward / reverse switching circuit controls the conduction and cutoff of transistor Qfr1, thereby changing the potential relationship of each pin of interface JP7, and thus controlling the DirLED signal to provide corresponding signals to indicate the forward and reverse directions of motors and other equipment.

[0042] It also includes an automatic / manual switching circuit, which comprises resistors R11 and R13. One end of resistor R11 is connected to the DIR signal, and the other end is connected to one end of resistor R13. The other end of resistor R13 is connected to a 3.3V power supply. By detecting the voltage after voltage division, the automatic / manual mode switching indication can be achieved. If the voltage after voltage division is lower than a certain threshold, the device is considered to be in automatic mode; if the voltage after voltage division is higher than the threshold, the device enters manual mode. This voltage signal is read by the control module 2 circuit to execute the corresponding mode switching logic.

[0043] It also includes a main handle startup circuit, which comprises resistors R14 and R15. One end of resistor R14 is connected to a 3.3V power supply, and the other end is connected to one end of resistor R15. The other end of resistor R15 is connected to the EN enable signal. In the main handle startup circuit, the high or low level of the EN enable signal determines whether the device can start. When the EN signal is high, the voltage after voltage division will meet the conditions required for device startup, thus activating the startup function. Conversely, when the EN signal is low, the voltage after voltage division is insufficient to meet the startup conditions, and the device remains disabled.

[0044] It also includes a drive start / stop circuit, which includes: resistors Rj1 to Rj4, transistors Q1 to Q2, relays SRD1 to SRD2, diodes D1 to D2, and interfaces JP5 to JP6; one end of resistor Rj1 is connected to pin 4 of relay SRD1, and the other end is connected to the collector of transistor Q1 and one end of diode D1. The other end of diode D1 and pin 1 of relay SRD1 are connected to a 12V power supply. The emitter of transistor Q1 is grounded. The base of transistor Q1 is connected to one end of resistor Rj3. The other end of resistor Rj3 is connected to the Ctrl2 signal. Pins 1, 2, and 3 of interface JP6 are connected to pins 2, 3, and 5 of relay SRD1, respectively.

[0045] One end of resistor Rj2 is connected to pin 4 of relay SRD2, and the other end is connected to the collector of transistor Q2 and one end of diode D2. The other end of diode D2 and pin 1 of relay SRD2 are connected to a 12V power supply. The emitter of transistor Q2 is grounded, and the base of transistor Q2 is connected to one end of resistor Rj4. The other end of resistor Rj4 is connected to the Ctrl1 signal. Pins 1, 2, and 3 of interface JP5 are connected to pins 2, 3, and 5 of relay SRD2, respectively.

[0046] This start / stop circuit controls the switching on and off of transistors Q1 and Q2 via control signals Ctrl1 and Ctrl2, which in turn controls the switching on and off of relays SRD1 and SRD2. The operation of the contacts of relays SRD1 and SRD2 enables the start and stop control of the equipment. Diodes are used to protect the transistors from damage caused by the back electromotive force generated when the relay coil is de-energized. Interfaces JP5 and JP6 are used to connect the equipment and implement the start and stop functions.

[0047] It also includes a remote control, which is wirelessly connected to the control module 2 to achieve the purpose of wireless remote control of the cutting machine.

[0048] It also includes a power supply circuit, which consists of a 72V to 12V circuit, a 12V to 5V circuit, and a 5V to 3.3V circuit connected in sequence. The 72V to 12V circuit uses a U3012S power chip, the 12V to 5V circuit uses an LM7805 power chip, and the 5V to 3.3V circuit uses an AS1117 power chip.

[0049] It also includes a buzzer, forward / reverse indicator lights, and automatic / manual indicator lights, which are connected to the control module 2. When the cutting machine malfunctions or malfunctions, the buzzer will provide an alarm.

[0050] It also includes the following working principles:

[0051] The automatic / manual button switches between modes; the default is manual mode. Press and hold for ≥1.5 seconds to switch between automatic and manual modes. The manual / automatic indicator light is on in automatic mode and off in manual mode. In automatic mode, pressing and releasing the main handle start switch 5 for ≥1.5 seconds starts the motor; pressing and releasing it again stops the motor. In manual mode, pressing the main handle start switch 5 starts the motor; releasing it stops the motor. The remote control has the highest priority; in any mode, pressing button 1 starts the motor, and pressing button 2 stops it. The automatic control module 2 communicates with the motor drive module 1 via serial port to handle the shutdown control function after the motor finishes running.

[0052] Control Method: Motor drive module 1 sends current data to automatic control module 2 in real time. Upon receiving the current data, automatic control module 2 checks whether to trigger the automatic stop function. Automatic Stop Processing: Automatic control module 2 receives the motor's operating current and checks if it is ≥50A (normal no-load current is less than 25A). When the motor's operating current is ≥50A, a timer accumulates the time, calculating whether the motor's operating time is greater than or equal to 50 seconds. After the accumulated time is reached, it checks if the current is less than 25A. If the current is less than 25A, it continues to check for 5 seconds until the current is less than 25A, then stops the motor. Otherwise, the motor continues to operate. Forward / Reverse Control Module 2 and Motor Drive Module 1 control the motor's forward and reverse rotation via signal lines. Forward / Reverse Switch 3 switches between forward and reverse rotation; the default is forward rotation. Press and hold for ≥1.5 seconds to switch to reverse rotation. The forward / reverse indicator light is on when the motor is rotating forward, and off when it is rotating in reverse.

[0053] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An automatic cutting control system, characterized in that, include: The drive module (1) is connected to the brushless motor (7) of the cutting machine; The control module (2) is connected to the drive module (1) and is used to drive the brushless motor (7) to work; A forward / reverse switching switch (3) is connected to the control module (2) to switch the brushless motor (7) between forward and reverse rotation. An automatic / manual switching switch (4) is connected to the control module (2) to switch the working mode of the brushless motor (7) from automatic to manual. The main handle start switch (5) is connected to the control module (2) to start the brushless motor (7) to work; The battery pack (6) is connected to the drive module (1) and the control module (2) to provide operating power.

2. The automatic cutting control system as described in claim 1, characterized in that, The control module (2) uses STM32F103C8T6 chips U6A and U6B.

3. The automatic cutting control system as described in claim 1, characterized in that, It also includes a forward / reverse switching circuit, which includes: resistors Rfr1 to Rfr4, transistor Qfr1, and interface JP7; one end of resistor Rfr1 is connected to the DirCtrl signal, and the other end is connected to the base of transistor Qfr1. The emitter of transistor Qfr1 is grounded. The collector of transistor Qfr1 is connected to one end of resistors Rfr2 and Rfr3. The other end of resistor Rfr2 is connected to a +5V power supply. The other end of resistor Rfr3 is connected to pin 1 of interface JP7. Pin 2 of interface JP7 is connected to one end of resistor Rfr4. The other end of resistor Rfr4 is connected to the DirLED signal. Pin 3 of interface JP7 is connected to a 3.3V power supply.

4. The automatic cutting control system as described in claim 1, characterized in that, It also includes an automatic / manual switching circuit, which includes resistors R11 and R13. One end of resistor R11 is connected to the DIR signal, and the other end is connected to one end of resistor R13. The other end of resistor R13 is connected to a 3.3V power supply.

5. The automatic cutting control system as described in claim 1, characterized in that, It also includes a main handle start circuit, which includes resistors R14 to R15; one end of resistor R14 is connected to a 3.3V power supply, the other end is connected to one end of resistor R15, and the other end of resistor R15 is connected to an EN enable signal.

6. The automatic cutting control system as described in claim 1, characterized in that, It also includes a drive start / stop circuit, which includes: resistors Rj1 to Rj4, transistors Q1 to Q2, relays SRD1 to SRD2, diodes D1 to D2, and interfaces JP5 to JP6; one end of resistor Rj1 is connected to pin 4 of relay SRD1, and the other end is connected to the collector of transistor Q1 and one end of diode D1. The other end of diode D1 and pin 1 of relay SRD1 are connected to a 12V power supply. The emitter of transistor Q1 is grounded. The base of transistor Q1 is connected to one end of resistor Rj3. The other end of resistor Rj3 is connected to the Ctrl2 signal. Pins 1, 2, and 3 of interface JP6 are connected to pins 2, 3, and 5 of relay SRD1, respectively. One end of resistor Rj2 is connected to pin 4 of relay SRD2, and the other end is connected to the collector of transistor Q2 and one end of diode D2. The other end of diode D2 and pin 1 of relay SRD2 are connected to a 12V power supply. The emitter of transistor Q2 is grounded, and the base of transistor Q2 is connected to one end of resistor Rj4. The other end of resistor Rj4 is connected to the Ctrl1 signal. Pins 1, 2, and 3 of interface JP5 are connected to pins 2, 3, and 5 of relay SRD2, respectively.

7. The automatic cutting control system as described in claim 1, characterized in that, It also includes a remote controller, which is wirelessly connected to the control module (2).

8. The automatic cutting control system as described in claim 1, characterized in that, It also includes a power supply circuit, which includes a 72V to 12V circuit, a 12V to 5V circuit, and a 5V to 3.3V circuit connected in sequence. The 72V to 12V circuit uses a U3012S power chip, the 12V to 5V circuit uses an LM7805 power chip, and the 5V to 3.3V circuit uses an AS1117 power chip.

9. The automatic cutting control system as described in claim 1, characterized in that, It also includes a buzzer, a forward / reverse indicator light, and an automatic / manual indicator light, which are connected to the control module (2) respectively.