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Monitoring method and monitoring system for detecting grinding machine processing status

A processing state and monitoring system technology, applied in the direction of grinding machine parts, workpiece feed movement control, metal processing equipment, etc., to achieve fast signal transmission speed, low failure rate, and real-time effects

Inactive Publication Date: 2011-12-14
SHANGHAI SANY PRECISION MACHINERY
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Problems solved by technology

It mainly discloses a method and system for controlling a grinding machine using sound waves. The system is an application based on a non-NC machine tool. The signal communication adopts a point-to-point mode. The method and system are not suitable for CNC grinding machines.

Method used

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  • Monitoring method and monitoring system for detecting grinding machine processing status
  • Monitoring method and monitoring system for detecting grinding machine processing status
  • Monitoring method and monitoring system for detecting grinding machine processing status

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Embodiment Construction

[0020] The features of the monitoring method and system of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] As mentioned above, the monitoring method of the present invention adopts a sonar detection system composed of a sonar sensor and an acoustic emission detection system. like figure 1 As shown, the specific method steps are:

[0022] In the first step 001, the sonar sensor is used to measure the high-frequency noise signal as a sonar signal emitted when the grinding wheel on the CNC grinding machine is in contact with the workpiece, and the high-frequency noise signal (sonar signal) is converted into an electrical signal for output. During the grinding process of the grinding machine, noise is generated when the grinding wheel of the grinding machine is in contact with the workpiece. The spectrum of this noise is mainly high frequency noise (frequency 250-350KHz). As for the noise generated by machine tools s...

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Abstract

A monitoring method and a monitoring system for detecting a processing state of a grinding machine are disclosed. A sonar sensor is employed to receive a sonar signal which is sent by a numerical control grinding machine during the processing of a work piece, and then to convert the sonar signal into an electric signal; an acoustic emission detection system is employed to convert the detected electric signal which is output by the sonar sensor into an RS232 communication protocol signal and a PROFIBUS communication protocol signal, respectively; the RS232 communication protocol signal is transmitted to a numerical control system on the grinding machine, and then the numerical control system displays the received RS232 protocol signal on a screen in the form of dynamic waveform, thereby realizing visualization of the grinding process; and the PROFIBUS communication protocol signal is transmitted to a PLC (Programmable Logic Control) system for PLC logic programming, and a collision signal and a contact signal of the grinding machine and the work piece which are output by the PLC system are transmitted to the part program of the numerical control system, thereby realizing collision prevention and idle running elimination. The monitoring method and the monitoring system of the invention are capable of monitoring the whole processing of the numerical control grinding machine, so that the grinding process can be optimized; and the grinding quality and efficiency are improved.

Description

technical field [0001] The invention relates to a monitoring method for a processing state, in particular to a monitoring method and a monitoring system for detecting the processing state of a grinding machine. Background technique [0002] The commonly used workpiece measurement method on the machine tool is the contact static measurement method. For example, the British Renishaw measuring device is used to transmit the contact switch signal to the numerical control system. Then it is processed by the CNC system. This measurement method is suitable for static measurement methods such as lathes. For grinding machines, there are a series of problems with this measurement method, such as the need to rotate the workpiece and the grinding wheel during the measurement process; the wear of the grinding wheel is large, and each measurement needs to be compensated and the measurement is cumbersome. [0003] In the existing technology: [0004] Reference 1: Provide a grinding mach...

Claims

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Application Information

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IPC IPC(8): B24B49/10
Inventor 邢雨于会龙高青玉
Owner SHANGHAI SANY PRECISION MACHINERY
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