Temperature monitoring device for numerical control machine tool
By integrating temperature acquisition, data processing, and adjustment modules into CNC machine tools, and combining them with adsorption and infrared sensors, high-precision temperature monitoring and automatic temperature adjustment are achieved, solving the problems of low accuracy and poor flexibility of traditional monitoring, and improving the machining accuracy and stability of machine tools.
Patent Information
- Application Number
- CN202423096910.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional CNC machine tools have poor temperature monitoring accuracy and flexibility, and cannot provide timely alarms or automatic temperature control, which affects the precision of manufactured products.
It employs a temperature acquisition module, a data processing module, a central controller, and an indicator module, combined with an adsorption temperature sensor and an infrared temperature sensor, to achieve high-precision temperature monitoring. The central controller controls the fan and cooling pump for automatic temperature adjustment, and an alarm module provides timely reminders.
It improves the accuracy of temperature monitoring, enables timely alarms and automatic temperature control, enhances the machining accuracy and stability of machine tools, and reduces the failure rate.
Smart Images
Figure CN223776701U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of numerical control, in particular to a numerical control machine tool temperature monitoring device. BACKGROUND
[0002] In the operation of the machine tool, due to the influence of heat sources such as environmental temperature change, cutting heat, friction heat or motor heating, heat will be conducted to the mechanical parts and shafts, which may cause the change of mechanical precision, and further affect the final precision of the workpiece, so it is necessary to monitor the working temperature of the specific position on the machine tool. The traditional temperature monitoring has poor accuracy due to electromagnetic interference or low processing precision of the detection signal, and the sensor installation method is fixed, the flexibility is not high, and the timely alarm reminding and automatic temperature control cannot be realized, which affects the precision of the production products. CONTENT OF THE UTILITY MODEL
[0003] Therefore, the present application provides a numerical control machine tool temperature monitoring device to solve the technical problems of poor accuracy of the existing temperature monitoring, low flexibility, and inability to timely alarm and automatically control the temperature.
[0004] To achieve the above object, the utility model provides the following technical scheme: a numerical control machine tool temperature monitoring device, comprising: a temperature acquisition module, a temperature adjustment module, and a data processing module, a central controller and an indication module arranged in the shell; the temperature acquisition module is used for collecting temperature information of the main shaft and the main shaft motor of the numerical control machine tool, and the temperature acquisition module is electrically connected with the data processing module; the data processing module is used for amplifying and filtering the collected temperature, and the data processing module and the temperature adjustment module are electrically connected with the central controller; the temperature adjustment module is used for adjusting the temperature of the machine tool; the indication module is used for temperature abnormality indication, and the indication module comprises a display screen and a plurality of LED lamps.
[0005] Further, the data processing module comprises a signal processing circuit and an RS232 interface module, the signal processing circuit comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, a capacitor C1, a reference voltage source chip U1 and an operational amplifier U2, one end of the resistor R1 is connected to a power supply, the other end of the resistor R1 is connected to a first end of the reference voltage source chip U1, a first end of the resistor R2, one end of the resistor R3 and one end of the resistor R4, the second end of the reference voltage source chip U1 and the second end of the resistor R2 are grounded, the third end of the reference voltage source chip U1 is connected to the third end of the resistor R2, the other end of the resistor R3 is connected to one end of a thermal resistor RT and one end of the resistor R6, the other end of the thermal resistor RT and the first end of the resistor R5 are grounded, the second end of the resistor R5, the third end of the resistor R5, the other end of the resistor R4, one end of the resistor R8 and the negative electrode of the operational amplifier U2 are connected, the other end of the resistor R6 is connected to one end of the resistor R7 and the positive electrode of the operational amplifier U2, the output end of the operational amplifier U2 is connected to the other end of the resistor R8 and one end of the resistor R9, the other end of the resistor R9 is connected to one end of the capacitor C1 to form an output end of the signal processing circuit, the output end of the signal processing circuit is connected to an I / O port of the central controller, and the other end of the capacitor C1 is grounded.
[0006] Further, the temperature acquisition module comprises an adsorption temperature sensing device and an infrared temperature sensor, the adsorption temperature sensing device is arranged on a spindle motor of the numerical control machine tool, the adsorption temperature sensing device comprises a shell and a thermal resistor RT arranged in the shell, three groups of strong magnetic points are arranged on the shell, and the three groups of strong magnetic points are arranged in an isosceles triangle shape, and the infrared temperature sensor is electrically connected to the central controller through the RS232 interface module.
[0007] Further, the timer module is electrically connected to the central controller.
[0008] Further, the temperature adjustment module comprises a fan control circuit and a cooling pump control circuit, the fan control circuit comprises a fan, a first relay and a first AC contactor, the control end of the first relay is connected to an I / O port of the central controller, the output end of the first relay is electrically connected to the control end of the first AC contactor, the output end of the first AC contactor is electrically connected to the control end of a driving motor of the fan, the cooling pump control circuit comprises a cooling pump, a second relay and a second AC contactor, the control end of the second relay is connected to an I / O port of the central controller, the output end of the second relay is electrically connected to the control end of the second AC contactor, and the output end of the second AC contactor is electrically connected to the control end of the cooling pump.
[0009] Further, the alarm module is further included, the alarm module includes voice alarm circuit and buzzer alarm circuit, the voice alarm circuit includes voice synthesizer and loudspeaker, the voice output end of voice synthesizer and the control end of loudspeaker are electrically connected, voice synthesizer is electrically connected with central controller, the buzzer alarm circuit includes resistance Rn, triode Qn and buzzer, the base of triode Qn is connected with the I / O port of central controller through resistance Rn, the emitter of triode Qn is grounded, the collector of triode Qn is connected with one control end of buzzer, and the other control end of buzzer is connected with power supply.
[0010] From the above technical solution, the advantages of the utility model are:
[0011] The data processing module of the application is more accurate in signal processing, so that the temperature monitoring accuracy is high, and the sensor can flexibly monitor the temperature of the machine tool main shaft motor and the main shaft, and timely alarm, warning and automatic temperature control are performed when the temperature of the machine tool component is abnormal. BRIEF DESCRIPTION OF DRAWINGS
[0012] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein for explanation by way of exemplary embodiments of the application.
[0013] Fig. 1 It is a component structure schematic view of the numerical control machine tool temperature monitoring device of the utility model.
[0014] Fig. 2 It is a circuit structure schematic view of the signal processing circuit of the utility model. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with embodiments and drawings. Here, the exemplary embodiments of the application and their descriptions are used to explain the application, but not as a limitation on the application.
[0016] The main shaft and the main shaft motor of the numerical control machine tool are the main components heated when the numerical control machine tool works at high speed. If the temperature of the main shaft exceeds the allowable range, the machining accuracy of the numerical control machine tool will be seriously affected, and the product quality will be reduced. The numerical control machine tool temperature monitoring device provided in the embodiment can accurately detect the temperature change information of the machine tool components, and timely alarm, warning and automatic temperature control are performed when the temperature of the machine tool component is abnormal. Figs. 1-2The device mainly comprises a temperature acquisition module, a temperature adjustment module, a data processing module, a central controller and an indication module. The data processing module, the central controller and the indication module are arranged in an oil-proof and waterproof shell to ensure stable operation of the device in various industrial environments. The temperature acquisition module is used to acquire temperature information of a main shaft and a main shaft motor of the numerical control machine tool, and is electrically connected with the data processing module; the data processing module is used to amplify and filter the acquired temperature, and the data processing module and the temperature adjustment module are both electrically connected with the central controller. The indication module is used to indicate temperature abnormalities, and comprises a display screen and multiple groups of LED lamps. The display screen is used to display temperature data of each key part of the machine tool and running state and alarm information of the system in real time, and the multiple groups of LED lamps can directly indicate whether the temperature of the machine tool parts is within a normal range. The temperature acquisition module comprises an adsorption temperature sensing device and an infrared temperature sensor. The adsorption temperature sensing device is arranged on the main shaft motor of the numerical control machine tool, and comprises a shell and a thermal resistance RT arranged in the shell. Three groups of strong magnetic points are arranged on the shell, and the three groups of strong magnetic points are arranged in an isosceles triangle shape to ensure stability of adsorption. The infrared temperature sensor is electrically connected with the central controller through an RS232 interface module, and is arranged near the main shaft of the machine tool to measure temperature change of the main shaft of the machine tool through a non-contact measurement method.
[0017] As Fig. 2As shown, the data processing module includes a signal processing circuit and an RS232 interface module. The signal processing circuit includes resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, a capacitor C1, a reference voltage source chip U1, and an operational amplifier U2. One end of the resistor R1 is connected to a power supply, and the other end of the resistor R1 is connected to a first end of the reference voltage source chip U1, a first end of the resistor R2, one end of the resistor R3, and one end of the resistor R4. The second end of the reference voltage source chip U1 and the second end of the resistor R2 are both grounded. The third end of the reference voltage source chip U1 is connected to the third end of the resistor R2. The other end of the resistor R3 is connected to one end of a thermal resistor RT and one end of the resistor R6. The other end of the thermal resistor RT and the first end of the resistor R5 are both grounded. The second end of the resistor R5, the third end of the resistor R5, the other end of the resistor R4, one end of the resistor R8, and the negative electrode of the operational amplifier U2 are connected. The other end of the resistor R6 is connected to one end of the resistor R7 and the positive electrode of the operational amplifier U2. The output end of the operational amplifier U2 is connected to the other end of the resistor R8 and one end of the resistor R9. The other end of the resistor R9 is connected to one end of the capacitor C1 to form an output end of the signal processing circuit. The output end of the signal processing circuit is connected to an I / O end of the central controller. The other end of the capacitor C1 is grounded. The resistors R1, R2, and the reference voltage source chip U1 form a reference voltage, making the detection signal more accurate. The resistors R3, R4, R5, and the thermal resistor connection form a bridge detection circuit. The temperature change is determined by detecting the change signal of the resistance. The detection signal is amplified and filtered by the amplification and filtering circuit composed of the resistors R6, R7, R8, R9, the capacitor C1, and the operational amplifier U2, and then output to the I / O end of the central controller.
[0018] The application also includes a timer module, which is electrically connected to the central controller. Users can design the timing interval according to actual needs, and the central controller controls the temperature adjustment module to adjust the temperature according to the preset time, or controls the temperature adjustment module to adjust the temperature according to the preset temperature information.
[0019] In operation, the adsorption temperature sensing device of the temperature acquisition module is adsorbed to the main shaft motor shell of the corresponding machine tool, and the infrared temperature sensor is installed near the main shaft of the machine tool. The signal processing circuit in the data processing module receives the temperature information detected by the thermal resistor in the adsorption temperature sensing device. The thermal resistor is of the PT100 type. The infrared temperature sensor transmits the detected temperature information to the central controller through the RS232 interface. The infrared temperature sensor is of the TN9 type. The central controller controls the fan of the temperature adjustment module to cool the motor according to the signal change information of the collected temperature, and controls the cooling pump to work to cool the main shaft.
[0020] The temperature adjusting module is used for adjusting the temperature of the machine tool.
[0021] The alarm module further comprises a voice alarm circuit and a buzzer alarm circuit, and when a temperature of a certain machine tool component is abnormal, the voice alarm circuit and the buzzer alarm circuit are controlled by the central controller to give voice and buzzer alarms.
[0022] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A temperature monitoring device for a numerically controlled machine tool, characterized by The application relates to a temperature acquisition module, a temperature adjustment module, a data processing module, a central controller and an indication module arranged in a shell. The temperature acquisition module is used for acquiring temperature information of a main shaft and a main shaft motor of a numerical control machine tool, and is electrically connected with the data processing module; the data processing module is used for amplifying and filtering the acquired temperature, and is electrically connected with the central controller and the temperature adjustment module; the temperature adjustment module is used for adjusting the temperature of the machine tool; the indication module is used for temperature abnormality indication, and comprises a display screen and a plurality of groups of LED lamps; the temperature acquisition module comprises an adsorption temperature sensing device and an infrared temperature sensor; the adsorption temperature sensing device is arranged on the main shaft motor of the numerical control machine tool; the adsorption temperature sensing device comprises a shell and a thermal resistance RT arranged in the shell; three groups of strong magnetic points are arranged on the shell and arranged in an isosceles triangle mode; and the infrared temperature sensor is electrically connected with the central controller through an RS232 interface module. The data processing module comprises a signal processing circuit and an RS232 interface module; the signal processing circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C1, a reference voltage source chip U1 and an operational amplifier U2; one end of the resistor R1 is connected with a power supply; the other end of the resistor R1 is connected with a first end of the reference voltage source chip U1, a first end of the resistor R2, one end of the resistor R3 and one end of the resistor R4; a second end of the reference voltage source chip U1 and a second end of the resistor R2 are grounded; a third end of the reference voltage source chip U1 is connected with a third end of the resistor R2; the other end of the resistor R3 is connected with one end of a thermal resistance RT and one end of the resistor R6; the other end of the thermal resistance RT and a first end of the resistor R5 are grounded; a second end of the resistor R5, a third end of the resistor R5, the other end of the resistor R4, one end of the resistor R8 and a negative electrode of the operational amplifier U2 are connected; the other end of the resistor R6 is connected with one end of the resistor R7 and a positive electrode of the operational amplifier U2; an output end of the operational amplifier U2 is connected with the other end of the resistor R8 and one end of the resistor R9; the other end of the resistor R9 is connected with one end of the capacitor C1 to form an output end of the signal processing circuit; the output end of the signal processing circuit is connected with an I / O end of the central controller; and the other end of the capacitor C1 is grounded.
2. The apparatus for temperature monitoring of a numerically controlled machine tool according to claim 1, wherein The application further comprises a timer module which is electrically connected with the central controller.
3. The apparatus of claim 1, wherein the temperature monitoring device is configured to monitor the temperature of the machine tool by measuring the temperature of the machine tool at a plurality of locations on the machine tool. 4. The CNC machine tool temperature monitoring device as described in claim 1, characterized in that, The temperature adjusting module comprises a fan control circuit and a cooling pump control circuit, the fan control circuit comprises a fan, a first relay and a first AC contactor, a control end of the first relay is connected with an I / O port of the central controller, an output end of the first relay is electrically connected with a control end of the first AC contactor, and an output end of the first AC contactor is electrically connected with a control end of a driving motor of the fan, the cooling pump control circuit comprises a cooling pump, a second relay and a second AC contactor, a control end of the second relay is connected with an I / O port of the central controller, an output end of the second relay is electrically connected with a control end of the second AC contactor, and an output end of the second AC contactor is electrically connected with a control end of the cooling pump.
5. The apparatus of claim 1, wherein, The alarm module comprises a voice alarm circuit and a buzzer alarm circuit, the voice alarm circuit comprises a voice synthesizer and a loudspeaker, a voice output end of the voice synthesizer is electrically connected with a control end of the loudspeaker, the voice synthesizer is electrically connected with the central controller, and an input end of the buzzer alarm circuit is connected with an I / O port of the central controller.