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Electromagnet lost power motor stall delay, tool change end series tool holder and knife holder compared to the main difference is the cutter disc relaxation broadcast brake reverse excitation, only the brake power loss increases the pre-indexing electromagnet and pre- The indexing proximity switch performs pre-positioning on the tool change position, so that the indexing more accurate tool position number is sent by the encoder in the absolute position. When the tool change error or the actual tool position number memorized by the numerical control system is lost, no manual modification is required. The actual location number, because when a tool change command is issued.
Tool post work flow chart delay brake reverse excitation. The motor stall motor reverses the delay brake and is positively energized. The motor reverses and stops the tool change. The cutter head does not need to be lifted to realize the index lock, which improves the rigidity of the tool holder and can withstand large cutting forces. The electrical design uses a new tool holder, which requires hardware connection between the tool holder and the CNC system, programming of the CNC system, and setting of system parameters. The hardware connection tool holder has a total of input points to be received by the signal. Analyze the electrical schematic of the CNC lathe and connect this signal to the interface of the CNC system.
In order to solve the difficulty of cylindricity measurement during roller machining, we use the decomposition measurement method and measure on the grinding machine. The measurement results show that the display on the bed display can not be realized online. If the program needs to be modified, the chip (EPROM) of the stored program must be removed from the machine tool, and then placed on the dedicated programmer to read and write the EPROM. This kind of programmer, which is not only expensive, but also a phase-out product, has no purchase value, so every time you modify the program, you need to go to the machine tool factory.
The other two CNC system programmers are different, and the operation is quite cumbersome, which brings great trouble to the project implementation. The logic control must be completed according to the flow chart shown when programming the PLC. During the tool change process, each action has a strict order and execution time requirements. The designed PLC program must take into account the proximity of the tool holder to reflect the superiority of the tool holder. The application of the ROT instruction is a key element to realize this function. There are 6 control conditions to set the function of the ROT instruction. For example, if the starting number of the setting count is O or 1, the number of bits of the processed data is two BCD codes or four BCDs. The number of codes, etc., the designed program has a replacement function. When the tool change fails, it can be detected by the diagnosis position of the numerical control system, for example, because the pre-index is not in place, the cutter head is not locked, or the tool holder is overheated. The reason is that various faults are detected when the program is programmed. Once the fault is detected, the corresponding diagnostic data is set to "1", and the machine fault is replaced by the red indicator light. This is R542. The conclusion has been completed for multiple CK7815 CNCs. The tool holder of the lathe has been modified and has been put into use, and the operation is quite reliable, which proves that the modification scheme is successful and feasible.
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