Numerically-controlled machine tool with fixed facing head and control method thereof

[0022] The present invention will be further described in detail below in conjunction with embodiments, but the protection scope of the present invention is not limited thereto.

[0023] As shown in the figure, the present invention relates to a control method of a numerically controlled machine tool with a fixed horizontal rotating disk. The control method includes a spindle mode and a horizontally rotating disk mode switching method and a spindle speed switching method; the console of the numerically controlled machine tool is connected with Spindle mode switch 1, pan mode switch 2, spindle low switch 3 and spindle high switch 4;

[0024] Set "M1" as the execution code for shifting to the spindle mode on the console, and set "M2" as the execution code for shifting to the pan mode; set the minimum speed for low gear to be less than the maximum speed for low gear, and the minimum for high gear The rotation speed is less than the maximum rotation speed of the high gear, the minimum rotation speed of the horizontal rotation gear is less than the maximum rotation speed of the horizontal rotation gear, the maximum rotation speed of the low gear is less than the minimum rotation speed of the high gear, and the maximum rotation speed of the rotation gear is less than the maximum rotation speed of the low gear;

[0025] The method for switching between the spindle mode and the flat dial mode is: the console detects the signal of the low-range switch 3 and the signal of the high-range switch 4, when it detects that the signal of the low-range switch 3 is "1" and the signal of the high-range switch 4 is "0" , You can switch between the spindle mode and the pan mode; input "M1" on the console to shift to the spindle mode or input "M2" to shift to the pan mode; when the input value is neither "M1" nor " When M2”, the CNC machine tool does not shift gears; when the console detects the input value “M1”, the CNC machine tool switches to the spindle mode, the spindle 5 of the CNC machine tool swings, and the first solenoid valve set in the spindle mode is energized. When the spindle mode switch 1 signal is "1", the spindle 5 stops swinging, and the gear shift ends; when the console detects the input value "M2", the CNC machine tool switches to the pan mode, and the spindle 5 of the CNC machine tool swings to match The second solenoid valve set in the pan mode is energized. When the switch 2 signal of the pan mode is "1", the spindle 5 stops swinging and the gear shift ends;

[0026] The spindle speed switching method is: the console detects the signal of spindle mode switch 1 and the signal of pan mode switch 2, when the signal of spindle mode switch 1 is "1" and the signal of pan mode switch 2 is "0" ", the spindle 5 speed is switched, and the spindle 5 speed S is input on the console; when the input value S is greater than the maximum speed of the low gear, the CNC machine tool is switched to high grade, and the spindle 5 of the CNC machine tool swings to match the high grade of the CNC machine tool. The set third solenoid valve is energized to switch the speed. When the high-end switch 4 signal is "1", the spindle 5 stops swinging and the gear shift ends; when the input value S is less than the minimum speed of the high-end, the CNC machine tool switches to the low-end, CNC machine tool The spindle 5 swings, and the fourth solenoid valve is energized with the low gear setting of the CNC machine tool for speed switching. When the low switch 3 signal is "1", the spindle 5 stops swinging and the gear shift ends; when the input S value exceeds the work of the machine tool In the range, the gear shift is terminated, and the spindle 5 runs at the speed S'; S> 0, S’> 0.

[0027] In the present invention, since it involves a numerically controlled machine tool with a fixed horizontal rotating disk, it mainly includes two gear shifting processes: (1) spindle speed switching, namely switching between high and low gears, and (2) spindle mode and horizontal rotating disk mode switching.

[0028] In the present invention, when switching the spindle speed, it must be satisfied that the spindle mode switch 1 signal is "1" and the pan mode switch 2 signal is "0", otherwise the spindle speed switch is not allowed, because when the pan mode switch 2 When the signal is "1", it means that the rotating plate is working. If the spindle 5 speed is switched, it may seriously damage the rotating plate and reduce the service life of the CNC machine tool. When the console detects that the spindle mode switch 1 signal is "1", the CNC machine tool works in the spindle mode, and the operator only needs to input the speed value S of the spindle 5 that needs to run according to the specific processing requirements, and the console will automatically follow the spindle 5 real-time speed to judge whether it is necessary to shift gears. When the shift requirements are met, that is, S is greater than the maximum speed of low gear and greater than the minimum speed of high gear and less than the maximum speed of high gear, or S is less than the minimum speed of high gear and less than the maximum speed of low gear When the speed is greater than the minimum speed of the low gear, the console judges whether to shift to the high gear or the low gear, and then adjusts the corresponding gear; at the same time, in order to avoid improper operation of the CNC machine tool, when the input S value exceeds the working range of the machine tool, it will terminate When shifting gears, the main shaft 5 runs at the speed S'to ensure that the speed of the main shaft 5 will not change suddenly and avoid affecting the normal operation and service life of the CNC machine tool. When the spindle speed is switched, if the required shift switch signal is already "1", the console considers that the shift is complete. If the corresponding shift switch signal does not change, the console will continue to control the spindle 5 to swing and then control The solenoid valve of the corresponding gear is energized to work.

[0029] In the present invention, when switching between the spindle mode and the pan mode, since the rotation speed of the pan is within the low speed range, it must first be satisfied that the spindle 5 is in the low range, that is, the signal of the low range switch 3 must be "1" , The signal of the high-end switch 4 is "0", otherwise it is not allowed to switch between the spindle mode and the rotating disc mode, because if the signal of the high-end switch 4 is "1" to switch between the spindle mode and the rotating disc mode, the working mode cannot be switched at all In the flat-rotating mode, forcibly switching may cause serious damage to the spindle 5 and reduce the service life of the CNC machine tool. When it is determined that the CNC machine tool is working in low gear, the operator needs to input the gear to be switched. The present invention sets the input "M1" to shift to the spindle mode and input "M2" to shift to the pan mode. If the input value is both Neither M1 nor M2, the CNC machine tool is controlled by the console without shifting gears. When the spindle mode and the rotary dial mode are switched, if the required shift switch signal is already "1", the shift is completed. If the corresponding shift switch signal does not change, the console will continue to control the spindle 5 to swing, and then control The solenoid valve of the corresponding gear is energized to work.

[0030] The console involved in the present invention can be arbitrarily designed by those skilled in the art according to the above-mentioned control method, and is generally designed to include a hardware body of numerical control equipment that can preset codes and values ​​and can operate numerical control machine tools according to signal feedback. It does not affect the method of the present invention.

[0031] When the CNC machine tool switches between the spindle mode and the pan mode, and the spindle mode switch 1 signal or the pan mode switch 2 signal cannot be switched to "1" within T1, an overtime alarm is issued and the gear shift is terminated. The CNC machine tool The spindle 5 stops swinging, and the machine tool stops running; T1> 0.

[0032] In the present invention, in order to ensure that meaningless gear switching is not carried out for a long time, the time T1 is set, and when the CNC machine tool switches between the spindle mode and the rotating disk mode, within the set time T1, if the gear switch signal is not in place If the spindle mode switch 1 signal or the pan mode switch 2 signal cannot be switched to "1" within T1, the corresponding gear shift overtime alarm will be issued, and the gear shift process will be terminated. The end of the gear shift will trigger an alarm due to the overtime. Therefore, the machine tool stops running, and the operator checks the source of the fault, which is easy to maintain, ensuring work efficiency and also ensuring a relatively long service life of the CNC machine tool.

[0033] When the CNC machine tool switches the spindle speed, the signal of the high-grade switch 4 or the signal of the low-grade switch 3 cannot be switched to "1" within T2, an overtime alarm is issued, the gear shift is terminated, the spindle 5 of the CNC machine tool stops swinging, and the machine tool stops Run; T2> 0.

[0034] In the present invention, in order to ensure that meaningless gear switching is not carried out for a long time, the time T2 is set. When the CNC machine tool performs spindle speed switching, within the set time T2, if the gear switch signal cannot be reached, the high-end switch 4 If the signal or low-shift switch 3 signal cannot be switched to "1" within T2 time, the corresponding gear shift overtime alarm will be issued, and the gear shift process will be terminated. When the gear shift is over, the alarm will be triggered due to the overtime, so the machine will stop running and the operator will check The source of failure is easy to maintain, which not only ensures work efficiency, but also ensures a relatively long service life of the CNC machine tool.

[0035] In the spindle speed switching method, when the input S is less than the minimum rotation speed of the low gear, the rotation speed S'of the spindle 5 is the minimum rotation speed of the low gear; in the spindle speed switching method, when the input S is greater than the maximum rotation speed of the high gear, The rotation speed S'of the main shaft 5 is the maximum rotation speed of the high gear.

[0036] In the present invention, if the input speed S'is lower than the minimum speed of the low gear, it is deemed that the speed S'exceeds the adjustable speed of the CNC machine tool, so it will be processed as the minimum speed of the low gear, and the speed S'is equal to the minimum speed of the low gear ; When the input speed S'is higher than the maximum speed of the high-grade, it is also regarded as the speed S'exceeds the adjustable speed of the CNC machine tool, and will be treated as the maximum speed of the high-grade, and the speed S'is equal to the maximum speed of the high-grade. The speed limit of the rotation speed S'of the spindle 5 ensures that the rotation speed of the spindle 5 of the CNC machine tool is always within the normal working range without sudden changes, and ensures the normal operation of the CNC machine tool and does not reduce the CNC machine tool due to improper operation Life.

[0037] A numerical control machine tool with a fixed horizontal rotating disk. A horizontal rotating disk is installed on the milling shaft of the numerical control machine tool. The numerical control machine tool is provided with a spindle mode switch 1, a horizontal rotating disk mode switch 2, a low gear switch 3 and a high grade switch 4. The spindle mode switch 1, the pan mode switch 2, the low gear switch 3, and the high gear switch 4 are connected to the console of the CNC machine tool.

[0038] In the present invention, the numerical control machine tool with a fixed rotating disk adopts the above-mentioned shift control method of the numerical control machine tool with a fixed rotating disk, wherein the CNC machine tool is provided with a spindle mode switch 1 connected to the console and a horizontal rotating disk mode. Switch 2, low-range switch 3 and high-end switch 4, that is, through the spindle mode switch 1, the pan mode switch 2, the low-range switch 3 and the high-end switch 4 feedback signals to the console to control the spindle 5 or the pan for subsequent follow-up Shift work.

[0039] The numerical control machine tool includes a first solenoid valve, the spindle mode switch 1, a console, and a first solenoid valve are sequentially connected, and the first solenoid valve is arranged in cooperation with the spindle 5 of the numerical control machine tool.

[0040] The numerically controlled machine tool includes a second solenoid valve, the pan-rotating disc mode switch 2, a console, and a second solenoid valve are sequentially connected, and the second solenoid valve is arranged in cooperation with the pan-rotating disc.

[0041] The numerical control machine tool includes a third solenoid valve, the high-grade switch 4, the console and the third solenoid valve are connected in sequence, and the third solenoid valve is arranged in cooperation with the main shaft 5 of the numerical control machine tool.

[0042] The numerical control machine tool includes a fourth solenoid valve, the low-level switch 3, the console and the fourth solenoid valve are connected in sequence, and the fourth solenoid valve is arranged in cooperation with the main shaft 5 of the numerical control machine tool.

[0043] In the present invention, the corresponding signal is fed back to the console of the CNC machine tool by the spindle mode switch 1, the pan mode switch 2, the high-end switch 4 or the low-end switch 3, and the console controls the corresponding first solenoid valve and second solenoid The valve, the third solenoid valve or the fourth solenoid valve work to control the spindle 5 of the numerical control machine tool or the flat rotary plate to perform gear shifting operations through various channels.

[0044] In the present invention, the first solenoid valve, the second solenoid valve, the third solenoid valve or the fourth solenoid valve can be set as the control solenoid valve, that is, the switching action is realized through a specific operating system such as a hydraulic system to ensure the accuracy of the control. It can be done in the form of a directly driven electromagnet.

[0045] In the present invention, 4 groups of different solenoid valves are used to work with different gear positions to ensure the effective and effective gear shifting. Since the 4 groups of solenoid valves are relatively independent, once a certain gear shift is unsuccessful, the CNC machine tool can be parked in real time and checked. The corresponding solenoid valve has higher working efficiency and easier maintenance.

[0046] The present invention solves the problem that in the prior art, the 5 gears of the spindle of a numerically controlled machine tool with a fixed rotating plate include low gear, high grade and three gears with a rotating plate. Since the rotating speed of the rotating plate is low, its speed range is included in the low gear. Within the range, it is not possible to directly use the speed to shift gears. Instead, it is necessary to execute the M code by controlling the shift solenoid valve to switch the mechanical transmission. As a result, the operator is required to know clearly when switching between high and low gears. The switching speed between high and low gears, but in fact, it is more difficult for operators who generally only understand the speed required for cutting, and even need to consult the manual when switching. Once the memory error will affect the actual work, the work efficiency is low The problem, by dividing the control part of the CNC machine tool into spindle mode and rotating disk mode switching and spindle speed switching, using the signal of spindle mode switch 1 connected to the console, the signal of rotating disk mode switch 2, and the spindle low-level switch The change of the signal of 3 and the signal of the high-end switch of the spindle 4 switches the working mode adopted by the CNC machine tool. Use the M1 and M2 codes to switch the spindle mode and the pan mode, and use the comparison value of the speed to switch the spindle speed to complete the high and low gear shift All the work after switching is completed by the corresponding solenoid valve control, which is safe and reliable; when switching the high and low gears in the present invention, the operator does not need to know the switching speed of the high and low gears, only the rotation speed required for cutting That is to say, the workload of the operator is greatly reduced, the control is simple, the work efficiency is high and the problem is easy to troubleshoot, and the excellent performance of the machine tool is better maintained.