An electric-controlled grinding machine with adjustable three-stage feeding

Abstract

The utility model relates to the technical field of grinders, and in particular to an electric-controlled grinder with adjustable three-stage feeding. It includes: a main control board, which adopts STM32F103C8T6 main control chips U6A and U6B; a digital tube display circuit, which adopts SM74HC595D driver chip, connected to the main control board; a driver, which is connected to the main control board and is used to drive the feed motor on the grinder; a gear control button, which is connected to the main control board; a battery pack, which adopts U3012S power management chip, to supply power to the main control board, the digital tube display circuit and the driver. The purpose of the utility model is to provide an electric-controlled grinder with adjustable three-stage feeding, which can realize the function of arbitrarily switching multiple gears to realize the precise and adjustable feeding amount, thereby improving the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, in particular to an electrically controlled grinder with adjustable three-stage feeding. Background Art

[0002] In the prior art, according to the wear of rail profile, the grinding trolley is divided into two types: rail profile and corrugation grinding trolley, which can perform preventive and restorative grinding on the rails on the line during operation, and grind the defects such as rail corrugation, rail fat edge, saddle wear, weld depression and fish scale cracks, so as to improve the profile of the working part of the rail head. For example, a feeding device and a grinding device for rail grinding with announcement number CN219099704U, although the grinding feed amount can also be controlled by the feeding motor, a preset threshold value of the feeding amount is required for each operation, and the function of arbitrarily switching multiple gears to realize the precise and adjustable feeding amount cannot be realized, thereby affecting the operation efficiency. Utility Model Content

[0003] The utility model aims to provide an electrically controlled grinding machine with three-stage adjustable feeding, which can realize the function of arbitrarily switching multiple gears to realize the accurate and adjustable feeding amount, thereby improving the working efficiency.

[0004] In order to solve the above technical problems, the utility model provides an electric-controlled grinding machine with adjustable three-stage feeding, comprising:

[0005] The main control board uses STM32F103C8T6 main control chips U6A and U6B;

[0006] The digital tube display circuit adopts the SM74HC595D driver chip and is connected to the main control board;

[0007] A driver, connected to the main control board, used to drive the feed motor on the grinder to work;

[0008] A gear control button connected to the main control board;

[0009] The battery pack adopts the U3012S power management chip to supply power to the main control board, digital tube display circuit and driver.

[0010] Preferably, the circuit of the main control chip U6A includes: the PB3 pin of the main control chip U6A is connected to the EN port, the PB4 pin is connected to the DIR port, the PB5 pin is connected to the PUL port, the PB9 pin is connected to the AUTO button, the PB10 pin is connected to the GEAR button, the PB11 pin is connected to the RESET button, the PB12 pin is connected to the FOR button, the PB13 pin is connected to the REV button, the PD0-OSC_IN pin is connected to the crystal oscillator Y1 and one end of the capacitor Cr9, the other end of the crystal oscillator Y1 is connected to the capacitor Cr8 and connected to the PD1 pin, the other end of the capacitor Cr8 is connected to the other end of the capacitor Cr9 and grounded, the BOOT0 pin is connected to one end of the resistor Rr2, the NRST pin is connected to the resistor Rr1 and one end of the capacitor Cr7, the other end of the resistor Rr1 is connected to the +3.3V power supply, and the other end of the capacitor Cr7 is connected to the other end of the resistor Rr2 and grounded.

[0011] Preferably, the circuit of the main control chip U6B includes: the VBAT pin of the main control chip U6B is connected to the VDD_1 pin, the VDD_2 pin and the VDD_3 pin, and at the same time, the VBAT pin, the VDD_1 pin, the VDD_2 pin and the VDD_3 pin are respectively connected to a capacitor Cr4, a capacitor Cr3, a capacitor Cr2 and a capacitor Cr1, the other ends of the capacitor Cr4, the capacitor Cr3, the capacitor Cr2 and the capacitor Cr1 are grounded, the VDDA pin is connected to the inductor L3 and one end of the capacitor Cr5, the other end of the inductor L3 is connected to the VDD_3 pin, the other end of the capacitor Cr5 is connected to the VSSA pin and the inductor L4, the other end of the inductor L4 is grounded, and the VSS_1 pin, the VSS_2 pin, the VSS_3 pin and the VSS_4 pin are all grounded.

[0012] Preferably, the main control chip U6A also includes an EN circuit, which includes: a resistor R1, a resistor R4 and a transistor Q1; the EN port is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, one end of the resistor R4 is connected to a +5V power supply, and the other end is connected to the collector of the transistor Q1 and the EN_OUT port, the EN_OUT port is connected to pin 2 of the j2 socket, and pin 1 of the j2 socket is grounded.

[0013] Preferably, the main control chip U6A also includes a DIR circuit, which includes: resistor R2, resistor R5 and transistor Q2; the DIR port is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, one end of the resistor R5 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q2 and the DIR_OUT port, the DIR_OUT port is connected to pin 3 of the j3 socket, and pins 1 and 2 of the j3 socket are grounded.

[0014] Preferably, the main control chip U6A also includes a PUL circuit, which includes: resistor R3, resistor R6 and transistor Q3; the PUL port is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, one end of the resistor R6 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q3 and the PUL_OUT port, and the PUL_OUT port is connected to pin 4 of the j3 socket.

[0015] Preferably, the circuit of the gear control button includes: a GEAR button; the GEAR button is connected to one end of resistor R8, the other end of resistor R8 is connected to pin 2 of j5 socket, pin 1 of j5 socket is connected to one end of resistor R13, and the other end of resistor R13 is grounded.

[0016] Preferably, the circuit of the AUTO button includes: the AUTO button is connected to one end of a resistor R7, the other end of the resistor R7 is connected to pin 2 of the j4 socket, the pin 1 of the j4 socket is connected to one end of a resistor R12, and the other end of the resistor R12 is grounded;

[0017] The circuit of the RESET button includes: the RESET button is connected to one end of a resistor R9, the other end of the resistor R9 is connected to pin 2 of the j6 socket, pin 1 of the j6 socket is connected to one end of a resistor R14, and the other end of the resistor R14 is grounded.

[0018] Preferably, the circuit of the FOR button includes: the FOR button is connected to one end of a resistor R10, the other end of the resistor R10 is connected to pin 2 of the j7 socket, pin 1 of the j7 socket is connected to one end of a resistor R15, and the other end of the resistor R15 is grounded;

[0019] The circuit of the REV button includes: the REV button is connected to one end of a resistor R11, the other end of the resistor R11 is connected to pin 2 of the j8 socket, pin 1 of the j8 socket is connected to one end of a resistor R16, and the other end of the resistor R16 is grounded.

[0020] Preferably, the feed motor is a stepper motor.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] When the GEAR button of the utility model is pressed, the PB10 foot (GEAR port) of the single-chip microcomputer recognizes a low level and performs a gear cycle operation according to the current gear (arbitrarily switching between three gears). Different PUL ports of the gears will output different numbers of pulses. After receiving different numbers of pulses, the stepper motor will be controlled to output different numbers of turns, and then different feed amounts will be operated. It can realize the function of arbitrarily switching multiple gears and realizing the precise and adjustable feed amount, thereby improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model discloses an electric control principle diagram of an electric control grinding machine with three-stage adjustable feeding.

[0024] Figure 2 This is a circuit schematic diagram of the main control chip U6A provided by the utility model.

[0025] Figure 3 This is a circuit schematic diagram of the main control chip U6B provided by the utility model.

[0026] Figure 4 This is a circuit schematic diagram of the power management chip provided by the utility model.

[0027] Figure 5 The utility model provides a circuit schematic diagram of the LED lamp indicator circuit.

[0028] Figure 6 The utility model provides a circuit schematic diagram of a gear control button, an AUTO button, an EN circuit, a DIR circuit, a PUL circuit, a GEAR button, a RESET button, a FOR button and a REV button.

[0029] Figure 7 The utility model provides a circuit schematic diagram of a digital tube display circuit.

[0030] In the figure: 1-main control board, 2-digital tube display circuit, 3-driver, 4-gear control button, 5-battery pack, 6-feed motor. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0032] like Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the embodiment of the utility model provides an electric-controlled grinder with adjustable three-stage feeding. The mechanical structure of the electric-controlled grinder provided in this embodiment is the same as that of the grinding device with patent announcement number CN219099704U, so its structural components are not described in detail. This embodiment only improves its circuit, namely, including:

[0033] Main control board 1, using STM32F103C8T6 main control chips U6A and U6B (i.e. single chip microcomputer);

[0034] Digital tube display circuit 2, using SM74HC595D driver chip, connected to main control board 1;

[0035] The driver 3 is connected to the main control board 1 and is used to drive the feed motor 6 on the grinder to work;

[0036] The gear control button 4 is connected to the main control board 1;

[0037] The battery pack 5 uses a U3012S power management chip to convert the +72V power supply into a +12V power supply, a +5V power supply and a +3.3V power supply in sequence; it supplies power to the main control board 1, the digital tube display circuit 2 and the driver 3. The battery pack 5 also includes an LED light indication circuit, which indicates the power level by color changes.

[0038] like Figure 2 As shown, the circuit of the main control chip U6A includes: the PB3 pin of the main control chip U6A is connected to the EN port, the PB4 pin is connected to the DIR port, the PB5 pin is connected to the PUL port, the PB9 pin is connected to the AUTO button, the PB10 pin is connected to the GEAR button, the PB11 pin is connected to the RESET button, the PB12 pin is connected to the FOR button, the PB13 pin is connected to the REV button, the PD0-OSC_IN pin is connected to the crystal oscillator Y1 and one end of the capacitor Cr9, the other end of the crystal oscillator Y1 is connected to the capacitor Cr8 and connected to the PD1 pin, the other end of the capacitor Cr8 is connected to the other end of the capacitor Cr9 and grounded, the BOOT0 pin is connected to one end of the resistor Rr2, the NRST pin is connected to the resistor Rr1 and one end of the capacitor Cr7, the other end of the resistor Rr1 is connected to the +3.3V power supply, and the other end of the capacitor Cr7 is connected to the other end of the resistor Rr2 and grounded.

[0039] like Figure 3 As shown, the circuit of the main control chip U6B includes: the VBAT pin of the main control chip U6B is connected to the VDD_1 pin, the VDD_2 pin and the VDD_3 pin, and at the same time, the VBAT pin, the VDD_1 pin, the VDD_2 pin and the VDD_3 pin are respectively connected to a capacitor Cr4, a capacitor Cr3, a capacitor Cr2 and a capacitor Cr1, the other ends of the capacitors Cr4, Cr3, Cr2 and Cr1 are grounded, the VDDA pin is connected to the inductor L3 and one end of the capacitor Cr5, the other end of the inductor L3 is connected to the VDD_3 pin, the other end of the capacitor Cr5 is connected to the VSSA pin and the inductor L4, the other end of the inductor L4 is grounded, and the VSS_1 pin, the VSS_2 pin, the VSS_3 pin and the VSS_4 pin are all grounded.

[0040] like Figure 6As shown, the main control chip U6A also includes an EN circuit, which includes: resistor R1, resistor R4 and transistor Q1; the EN port is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, one end of the resistor R4 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q1 and the EN_OUT port, the EN_OUT port is connected to pin 2 of the j2 socket, and pin 1 of the j2 socket is grounded.

[0041] like Figure 6 As shown, the main control chip U6A also includes a DIR circuit, which includes: resistor R2, resistor R5 and transistor Q2; the DIR port is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, one end of the resistor R5 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q2 and the DIR_OUT port, the DIR_OUT port is connected to pin 3 of the j3 socket, and pins 1 and 2 of the j3 socket are grounded.

[0042] like Figure 6 As shown, the main control chip U6A also includes a PUL circuit, which includes: resistor R3, resistor R6 and transistor Q3; the PUL port is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, one end of the resistor R6 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q3 and the PUL_OUT port, and the PUL_OUT port is connected to pin 4 of the j3 socket.

[0043] like Figure 6 As shown, the circuit of the gear control button 4 includes: a GEAR button; the GEAR button is connected to one end of the resistor R8, the other end of the resistor R8 is connected to pin 2 of the j5 socket, the pin 1 of the j5 socket is connected to one end of the resistor R13, and the other end of the resistor R13 is grounded.

[0044] like Figure 6 As shown, the circuit of the AUTO button includes: the AUTO button is connected to one end of the resistor R7, the other end of the resistor R7 is connected to the 2nd pin of the j4 socket, the 1st pin of the j4 socket is connected to one end of the resistor R12, and the other end of the resistor R12 is grounded;

[0045] The circuit of the RESET button includes: the RESET button is connected to one end of the resistor R9, the other end of the resistor R9 is connected to pin 2 of the j6 socket, pin 1 of the j6 socket is connected to one end of the resistor R14, and the other end of the resistor R14 is grounded.

[0046] like Figure 6As shown, the circuit of the FOR button includes: the FOR button is connected to one end of the resistor R10, the other end of the resistor R10 is connected to the 2nd pin of the j7 socket, the 1st pin of the j7 socket is connected to one end of the resistor R15, and the other end of the resistor R15 is grounded;

[0047] The circuit of the REV button includes: the REV button is connected to one end of the resistor R11, the other end of the resistor R11 is connected to pin 2 of the j8 socket, pin 1 of the j8 socket is connected to one end of the resistor R16, and the other end of the resistor R16 is grounded.

[0048] The feeding motor 6 is a stepping motor.

[0049] It also includes the following working principles:

[0050] 1. The AUTO button controls manual / automatic feeding. When the AUTO button is pressed, the PB9 pin (AUTO port) of the microcontroller recognizes a low level, enables the EN port to output a high level, and EN_OUT outputs a low level. After the driver 3 of the stepper motor receives the low level, the stepper motor enters the working state.

[0051] 2. The FOR (forward) / REV (reverse) button controls the direction. When the FOR button is pressed, the PB12 pin (FOR port) of the microcontroller recognizes a low level. The current state is working in the forward direction. The DIR port outputs a high level, and the PUL port outputs a PWM waveform to the driver 3 of the stepper motor. The stepper driver 3 controls the stepper motor to work forward. When the REV button is pressed, it works in the reverse direction.

[0052] 3. The RESET button controls the current digital display content. When the RESET button (reset button) is pressed, the PB11 pin (RESET port) of the microcontroller receives a low level, and the microcontroller processes the digital display module. The digital display content will be cleared and the threshold for whether to feed / stop feeding will be determined based on the current state.

[0053] 4. The GEAR button controls the gear position, including three gear positions, forming a three-level gear position. When the GEAR button is pressed, the PB10 pin (GEAR port) of the microcontroller recognizes the low level and performs a gear cycle operation according to the current gear position (switching between the three gear positions at will). Different PUL ports of the gear position will output different numbers of pulses. After receiving different numbers of pulses, the stepper motor will control the stepper motor to output different numbers of turns, thereby performing operations with different feed amounts.

[0054] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An electric-controlled grinding machine with adjustable three-stage feeding, characterized in that: include: The main control board uses STM32F103C8T6 main control chips U6A and U6B; The digital tube display circuit adopts the SM74HC595D driver chip and is connected to the main control board; A driver, connected to the main control board, used to drive the feed motor on the grinder to work; A gear control button connected to the main control board; The battery pack adopts the U3012S power management chip to supply power to the main control board, digital tube display circuit and driver.

2. The three-stage feed adjustable electric-controlled grinding machine according to claim 1, characterized in that: The circuit of the main control chip U6A includes: the PB3 pin of the main control chip U6A is connected to the EN port, the PB4 pin is connected to the DIR port, the PB5 pin is connected to the PUL port, the PB9 pin is connected to the AUTO button, the PB10 pin is connected to the GEAR button, the PB11 pin is connected to the RESET button, the PB12 pin is connected to the FOR button, the PB13 pin is connected to the REV button, the PD0-OSC_IN pin is connected to the crystal oscillator Y1 and one end of the capacitor Cr9, the other end of the crystal oscillator Y1 is connected to the capacitor Cr8 and connected to the PD1 pin, the other end of the capacitor Cr8 is connected to the other end of the capacitor Cr9 and grounded, the BOOT0 pin is connected to one end of the resistor Rr2, the NRST pin is connected to the resistor Rr1 and one end of the capacitor Cr7, the other end of the resistor Rr1 is connected to the +3.3V power supply, and the other end of the capacitor Cr7 is connected to the other end of the resistor Rr2 and grounded.

3. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 2, characterized in that: The circuit of the main control chip U6B includes: the VBAT pin of the main control chip U6B is connected to the VDD_1 pin, the VDD_2 pin and the VDD_3 pin, and at the same time, a capacitor Cr4, a capacitor Cr3, a capacitor Cr2 and a capacitor Cr1 are respectively connected to the VBAT pin, the VDD_1 pin, the VDD_2 pin and the VDD_3 pin, and the other ends of the capacitors Cr4, Cr3, Cr2 and Cr1 are grounded, the VDDA pin is connected to the inductor L3 and one end of the capacitor Cr5, the other end of the inductor L3 is connected to the VDD_3 pin, the other end of the capacitor Cr5 is connected to the VSSA pin and the inductor L4, the other end of the inductor L4 is grounded, and the VSS_1 pin, the VSS_2 pin, the VSS_3 pin and the VSS_4 pin are all grounded.

4. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 3, characterized in that: The main control chip U6A also includes an EN circuit, which includes: resistor R1, resistor R4 and transistor Q1; the EN port is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the base of the transistor Q1, the emitter of the transistor Q1 is grounded, one end of the resistor R4 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q1 and the EN_OUT port, the EN_OUT port is connected to pin 2 of the j2 socket, and pin 1 of the j2 socket is grounded.

5. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 4, characterized in that: The main control chip U6A also includes a DIR circuit, which includes: resistor R2, resistor R5 and transistor Q2; the DIR port is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, one end of the resistor R5 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q2 and the DIR_OUT port, the DIR_OUT port is connected to pin 3 of the j3 socket, and pins 1 and 2 of the j3 socket are grounded.

6. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 5, characterized in that: The main control chip U6A also includes a PUL circuit, which includes: resistor R3, resistor R6 and transistor Q3; the PUL port is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, one end of the resistor R6 is connected to the +5V power supply, and the other end is connected to the collector of the transistor Q3 and the PUL_OUT port, and the PUL_OUT port is connected to pin 4 of the j3 socket.

7. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 6, characterized in that: The circuit of the gear control button includes: a GEAR button; the GEAR button is connected to one end of a resistor R8, the other end of the resistor R8 is connected to pin 2 of the j5 socket, the pin 1 of the j5 socket is connected to one end of a resistor R13, and the other end of the resistor R13 is grounded.

8. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 2, characterized in that: The circuit of the AUTO button includes: the AUTO button is connected to one end of a resistor R7, the other end of the resistor R7 is connected to pin 2 of the j4 socket, the pin 1 of the j4 socket is connected to one end of a resistor R12, and the other end of the resistor R12 is grounded; The circuit of the RESET button includes: the RESET button is connected to one end of a resistor R9, the other end of the resistor R9 is connected to pin 2 of the j6 socket, pin 1 of the j6 socket is connected to one end of a resistor R14, and the other end of the resistor R14 is grounded.

9. The three-stage feed adjustable electric-controlled grinding machine as claimed in claim 2, characterized in that: The circuit of the FOR button includes: the FOR button is connected to one end of a resistor R10, the other end of the resistor R10 is connected to pin 2 of the j7 socket, the pin 1 of the j7 socket is connected to one end of a resistor R15, and the other end of the resistor R15 is grounded; The circuit of the REV button includes: the REV button is connected to one end of a resistor R11, the other end of the resistor R11 is connected to pin 2 of the j8 socket, pin 1 of the j8 socket is connected to one end of a resistor R16, and the other end of the resistor R16 is grounded.

10. An electrically controlled grinding machine with three-stage feed adjustable as claimed in any one of claims 1 to 9, characterized in that: The feeding motor is a stepping motor.

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