Voice alarm device for numerical control milling machine

Abstract

The utility model discloses a voice alarm device for a numerical control milling machine, which relates to the technical field of numerical control and comprises a data acquisition module, a shell with a wiring hole, and a control module, a relay module, a voice playing module and a power supply module which are arranged in the shell, the data acquisition module comprises sensors installed at all parts of a milling machine, the output end of the data acquisition module is electrically connected with the input end of the control module, the relay module comprises a relay and a relay driving circuit, and the output end of the relay driving circuit is electrically connected with the control end of the relay. The input end of the relay driving circuit is electrically connected with the output end of the control module; the relay is arranged on a power supply loop of the main shaft driving motor; the voice playing module is connected with the control module through a serial port, the power supply module is used for providing a required voltage source for the device, voice alarm information can be sent to an operator in time, the safety of the machining process is guaranteed, meanwhile, the downtime of equipment is shortened, and the production efficiency of the equipment is improved.

Description

Technical Field

[0001] This application relates to the field of CNC technology, specifically to a voice alarm device for CNC milling machines. Background Technology

[0002] CNC milling machines are a type of digitally controlled machine tool evolved from horizontal milling machines. They offer flexible machining capabilities and high versatility, allowing the processing of workpieces of various shapes. As a typical mechatronics product, it involves technologies in mechanical, electrical, hydraulic, and pneumatic fields. The healthy and stable operation of CNC milling machines ensures the quality and production efficiency of mechanical products. Therefore, continuous monitoring of the operating parameters of CNC milling machines and the provision of alarms in case of anomalies are crucial. Existing alarm devices cannot promptly and intuitively alert operators to CNC milling machine malfunctions, preventing early maintenance and potentially posing significant risks. Utility Model Content

[0003] In view of this, this application provides a voice alarm device for CNC milling machines to solve the technical problem that traditional alarm devices cannot promptly and intuitively alert operators to abnormalities in CNC milling machines and remind them to perform maintenance in the early stages, which may cause significant potential risks.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a voice alarm device for CNC milling machines, comprising: a data acquisition module, a housing with wiring holes, and a control module, a relay module, a voice playback module, and a power supply module disposed within the housing;

[0005] The data acquisition module includes sensors installed in various parts of the milling machine. The output of the data acquisition module is electrically connected to the input of the control module. The relay module includes a relay and a relay drive circuit. The output of the relay drive circuit is electrically connected to the control terminal of the relay, and the input of the relay drive circuit is electrically connected to the output of the control module. The relay is installed on the power supply circuit of the spindle drive motor. The voice playback module is connected to the control module via a serial port. The power supply module is used to provide the required voltage source for the device.

[0006] Furthermore, the data acquisition module includes a temperature sensor, a vibration sensor, and a magnetic encoder. The temperature sensor is mounted on the housing of the spindle drive motor, the magnetic encoder is located at the motor bearing end cover of the drive motor, and the vibration sensor is located on the machining tool holder.

[0007] Furthermore, the control module includes a controller, a memory chip, a timing module, and a control button group. The memory chip, timing module, and control button group are all electrically connected to the controller. The control button group includes an alarm duration setting button, a temperature parameter setting button, a vibration parameter setting button, and a spindle speed setting button.

[0008] Furthermore, the relay drive circuit includes a transistor Qn, resistors Rn1 and Rn2, and a diode Dn. The base of transistor Qn is connected to one end of resistors Rn1 and Rn2. The other end of resistor Rn1 is electrically connected to the output of the controller. The other end of resistor Rn2 and the emitter of transistor Qn are grounded. The collector of transistor Qn is connected to the anode of diode Dn and one end of the relay. The cathode of diode Dn and the other end of the relay are both connected to the power supply. When the controller outputs a high level, transistor Q1 is saturated and conducts, energizing the relay coil and closing the contacts. When the controller outputs a low level, transistor Q1 is cut off, de-energizing the relay coil and opening the contacts. Transistor Q1 acts as a control switch, and resistor Rn1 primarily limits current, reducing the power consumption of transistor Q1. Resistor Rn2 ensures reliable cutoff of transistor Q1. Diode Dn provides reverse freewheeling, which provides a discharge path for the relay coil when transistor Q1 switches from conducting to turning off, and clamps its voltage at +12V.

[0009] Furthermore, the voice playback module includes a voice synthesis chip and a speaker. The input terminal of the voice synthesis chip is electrically connected to the output terminal of the controller, and the output terminal of the voice synthesis chip is electrically connected to the control terminal of the speaker.

[0010] Furthermore, the power supply module includes an EMI filter, a bridge rectifier, a voltage regulator, and a DC-DC converter. The EMI filter, bridge rectifier, voltage regulator, and DC-DC converter are electrically connected in sequence. The AC output terminal is electrically connected to the AC input terminal of the bridge rectifier through the EMI filter to filter the current. The current is then rectified by the bridge rectifier, the voltage regulator stabilizes the rectified power supply, and the DC-DC converter converts the output voltage into the required voltage value.

[0011] As can be seen from the above technical solution, the advantages of this utility model are:

[0012] This application uses a data acquisition module to collect data on the spindle speed, the operating temperature of the spindle's drive motor, and the vibration parameters of the tool holder on a CNC milling machine. These data are then sent to a control module for analysis. In the event of spindle malfunction or machining abnormalities, the system promptly controls a voice playback module to provide voice alerts and issue alarm information to the operator. This ensures the safety of the machining process, reduces equipment downtime, and improves equipment utilization and production efficiency. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0014] Figure 1 This is a schematic diagram of the composition structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the composition of the control module of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.

[0017] The main function of the voice alarm device for CNC milling machines is to issue alarm information to the operator via voice when the equipment malfunctions or malfunctions. The device can clearly inform the operator of the specific location and type of the fault, thereby helping them quickly locate the problem and take appropriate measures. This not only reduces equipment downtime but also improves equipment utilization and production efficiency. This invention discloses a voice alarm device for CNC milling machines that can promptly issue voice alarm information to the operator, ensure the safety of the machining process, reduce equipment downtime, and thus improve equipment production efficiency. Figures 1 to 2 As shown, the voice alarm device for CNC milling machines includes: a data acquisition module, a housing with wiring holes, and a control module, a relay module, a voice playback module, and a power supply module housed within the housing. The housing is designed with wiring holes to facilitate wire connections between the modules and to protect the internal electronic components from interference and damage from the external environment. Specifically, the data acquisition module includes sensors installed in various parts of the milling machine. The output terminal of the data acquisition module is electrically connected to the input terminal of the control module. The data acquisition module includes a temperature sensor, a vibration sensor, and a magnetic encoder. The temperature sensor is installed on the housing of the spindle drive motor and can detect the operating temperature of the spindle drive motor. Excessive temperature may cause motor failure. The magnetic encoder is located at the motor bearing end cover of the drive motor and can detect the spindle speed. When the speed deviates from the preset parameters, it will cause machining quality problems. The vibration sensor is located on the tool holder; based on the detected vibration parameters of the tool holder, it can analyze whether there is a problem with clamping looseness or part fitting. The relay module includes a relay and a relay drive circuit. The output of the relay drive circuit is electrically connected to the control terminal of the relay, and the input of the relay drive circuit is electrically connected to the output of the control module. The relay is installed in the power supply circuit of the spindle drive motor. In emergency situations, the control module can automatically control the relay module to drive the relay to cut off the drive source of the machining spindle, thereby stopping operation and ensuring operational safety. The voice playback module is connected to the control module via a serial port, and the power supply module provides the necessary voltage to the device.

[0018] In this embodiment, the control module includes a controller, a memory chip, a timing module, and a control button group. The memory chip, timing module, and control button group are all electrically connected to the controller. The memory chip stores system parameters and detection data, the timing module records alarm duration parameters, and the control button group sets alarm duration, temperature parameter thresholds, vibration parameter thresholds, and spindle speed thresholds. Specifically, the control button group includes alarm duration setting buttons, temperature parameter setting buttons, vibration parameter setting buttons, and spindle speed setting buttons.

[0019] The relay drive circuit includes a transistor Qn, resistors Rn1 and Rn2, and a diode Dn. The base of transistor Qn is connected to one end of resistors Rn1 and Rn2. The other end of resistor Rn1 is electrically connected to the output of the controller. The other end of resistor Rn2 and the emitter of transistor Qn are grounded. The collector of transistor Qn is connected to the anode of diode Dn and one end of the relay. The cathode of diode Dn and the other end of the relay are both connected to the power supply. Transistor Qn is an NPN transistor. When the controller outputs a high level, transistor Q1 is saturated and conducts, energizing the relay coil and closing the contacts. When the controller outputs a low level, transistor Q1 is cut off, de-energizing the relay coil and opening the contacts. Transistor Q1 acts as a control switch, and resistor Rn1 primarily limits current, reducing the power consumption of transistor Q1. Resistor Rn2 ensures reliable cutoff of transistor Q1. Diode Dn provides reverse freewheeling, which provides a discharge path for the relay coil when transistor Q1 switches from conducting to turning off, and clamps its voltage at +12V.

[0020] The voice playback module includes a voice synthesis chip and a speaker. The input terminal of the voice synthesis chip is electrically connected to the output terminal of the controller, and the output terminal of the voice synthesis chip is electrically connected to the control terminal of the speaker. In this embodiment, the voice synthesis chip is model XFS3031CNPEVB, and the communication interface pins of the voice synthesis chip are connected to the serial port on the controller via a connecting cable. The controller is model STM32F407VGT6. When a voice alarm is triggered, the controller controls the voice synthesis chip to output a preset voice signal, which is then played through the speaker.

[0021] The power supply module includes an EMI filter, a bridge rectifier, a voltage regulator, and a DC-DC converter. The EMI filter, bridge rectifier, voltage regulator, and DC-DC converter are electrically connected in sequence. The AC output terminal is electrically connected to the AC input terminal of the bridge rectifier through the EMI filter to filter the current. The current is then rectified by the bridge rectifier. The voltage regulator stabilizes the rectified power supply and outputs it. The DC-DC converter converts the output voltage to the required voltage value. The DC-DC converter includes a 12V to 5V conversion chip and a 5V to 3.3V conversion chip.

[0022] When the device is working, the data acquisition module sends the collected spindle speed signal, the operating temperature signal of the spindle drive motor, and the vibration signal of the tool holder to the control module. When an abnormality occurs, the control module sends a signal to the voice playback module, which then plays preset alarm voice messages at preset times and frequencies, such as "Spindle speed abnormal, please pay attention." Based on the alarm message, the operator can obtain the specific location and type of the fault, quickly locate the problem, and take appropriate measures.

[0023] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to the embodiments of this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A voice alarm device for a numerical control milling machine, wherein, The utility model relates to a kind of intelligent milling machine monitoring device, including: data acquisition module, the shell with wiring hole and the control module being arranged in the shell, relay module, voice playback module and power supply module;The data acquisition module includes sensor installed in each part of milling machine, the output of the data acquisition module is electrically connected with the input of the control module, the relay module includes relay and relay drive circuit, the output of the relay drive circuit is electrically connected with the control end of the relay, the input of the relay drive circuit is electrically connected with the output of the control module, and the relay is arranged on the power supply loop of main shaft driving motor;The voice playback module is connected with the control module by serial port, and the power supply module is used to provide required voltage source for device. The data acquisition module includes temperature sensor, vibration sensor and magnetic sensing encoder, the temperature sensor is installed on the shell of main shaft driving motor, the magnetic sensing encoder is arranged at motor bearing end cover of driving motor, and the vibration sensor is arranged on machining tool holder. The control module includes controller, memory chip, timing module and control key group, the memory chip, the timing module and the control key group are electrically connected with the controller, and the control key group includes alarm duration setting key, temperature parameter setting key, vibration parameter setting key and main shaft rotating speed setting key.

2. The voice alarm device for a numerical control milling machine according to claim 1, wherein, The relay drive circuit includes transistor Qn, resistance Rn1, resistance Rn2, diode Dn, the base of the transistor Qn is connected with one end of the resistance Rn1 and one end of the resistance Rn2, the other end of the resistance Rn1 is electrically connected with the output of the controller, the other end of the resistance Rn2 and the emitter of the transistor Qn are grounded, the collector of the transistor Qn is connected with the positive electrode of the diode Dn and one end of the relay, and the negative electrode of the diode Dn and the other end of the relay are connected with power supply.

3. The voice alarm device for a numerical control milling machine as claimed in claim 1, wherein, The voice playback module includes voice synthesis chip and loudspeaker, the input of the voice synthesis chip is electrically connected with the output of the controller, and the output of the voice synthesis chip is electrically connected with the control end of the loudspeaker.

4. The voice alarm device for a numerical control milling machine according to claim 3, wherein The power supply module includes EMI filter, bridge rectifier, voltage stabilizer and DC-DC converter, the EMI filter, the bridge rectifier, the voltage stabilizer and the DC-DC converter are sequentially connected, and the AC input end of the EMI filter and bridge rectifier is electrically connected with mains output end, the current is filtered, and then rectified by bridge rectifier, the voltage stabilizer is used to output stabilized voltage after rectification, and the output voltage is converted into required voltage value by the DC-DC converter.

5. The voice alarm device for a numerical control milling machine as claimed in claim 4, wherein, ​ 6. The voice alarm device for a numerical control milling machine as claimed in claim 1, wherein, ​

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