Multi-frequency hybrid wireless data read-write transmission device for heavy diesel engine machining production line

Abstract

The invention discloses a multi-frequency hybrid wireless data read-write transmission device for a heavy diesel engine machining production line and belongs to the heavy diesel engine machining production line field. The invention aims to solve the problem of high cost caused by a fact that two sets of processors with different frequencies are adopted for reading and writing at present, and the problem of poor expandability caused by single frequencies. The device of the invention is composed of a machine tool, a numerical control unit, a PLC, a multi-frequency RFID processor, a read-write head and data carriers; the data carrier is installed on a workpiece or a cutter and sends out the coding information of the workpiece and the cutter in real time in the form of wireless radio frequencysignals with different frequencies; the read-write head mounted on a station is used for receiving the wireless radio frequency signals of the workpiece data carrier; and the read-write head mountedon the machine tool is used for receiving the wireless radio frequency signals of the cutter data carrier. According to the device, a multi-frequency mixing mode is adopted for performing reading andwriting, and therefore, on the one hand, personalized requirements for distances, postures and the like required by data transmission of different components are met; and on the other hand, only one processor is adopted, thus, investment cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of heavy-duty diesel engine machining and production lines. Background technique [0002] The diesel engine cylinder block and cylinder head are composed of a machining center and a special machine in the machining production line. During the production process, the machine tool needs to read and save the processing information of the workpiece in each process to facilitate data traceability; at the same time, the workpiece is transferred to the next Before a process, the machine tool needs to write the completed data information into the workpiece, so as to mark the status of the workpiece. [0003] At the same time, during the production process, the machining center equipment needs to replace the old and new knives according to the service life of the tool. The operator manually disassembles the old knife and fills in the information card such as the tool life when the tool is off the machine; at the same time, the...

AI Technical Summary

Problems solved by technology

The disadvantage of reading two-dimensional codes is that machining equipment mainly relies on fixture positioning, emulsion and various special tools for drilling, milling and other processing content. The surface of the workpiece occupies emulsion, which will affect the reading of two-dimensional codes at this time, resulting in The reading failure, and the influence of light inside the machine tool will also reduce the success rate of reading the two-dimensional code

The disadvantage of RFID reading is that the heavy-duty engine workpiece is large in size, with a length of more than 1 meter, a height, and a width of more than 50 cm. At the same time, the postures of each station are different, and the installation position of the code-carrying block is fixed. In order to prevent tool processing interference, The empty position of the process installation is even shrunk inside, and at this time, long-distance reading and writing is required

However, the size of the tool is small, and the tools in the tool magazine of the machine tool are arranged compactly. If reading and writing over a long distance, it will lead to misreading and reading other tools. Therefore, the RFID of the tool needs to be read and written at a short distance.

[0005] Therefore, the traditional single-frequency read-write RFID wireless transmission method cannot ensure the effective data read-write transmission of workpieces and tools at the same time. The current common practice is to use two sets of processors with different frequencies for reading and writing, and this method is costly. Single, poor scalability

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