CN107791310A - Tyre tread automatic processing system and its fervent cutter temprature control method and device - Google Patents

Abstract

A kind of tyre tread automatic processing system includes temperature control equipment, and the temperature control equipment includes：Numerical control parts, PCU Power Conditioning Unit and operational factor monitoring component.Numerical control parts adjusts the power supply parameter to fervent cutter by PCU Power Conditioning Unit based on the fervent cutter operational factor measured by operational factor monitoring component, so as to adjust the operation temperature of fervent cutter.Also disclose a kind of method that fervent tool temperature is controlled by said temperature control device.Pass through the temperature control equipment and its method, it is possible to achieve fervent cutter is processed with constant temperature.

Description

Automatic tire pattern processing system and method and device for temperature control of hot cutting tool

technical field

The invention relates to an automatic tire pattern processing system, which can be used in the design and development of new tire patterns and various application occasions of retreading old tires. The present invention further relates to a method and a system for controlling the temperature of the hot cutting tool of the tire pattern automatic processing system.

Background technique

Tire pattern plays an important role in the traction, braking, turning, drainage and noise performance of the tire, which affects the noise and stability of the car when it is running. With the continuous improvement of the comfort requirements of automobiles, the update of tire patterns is becoming more and more frequent, and the demand for the development of new patterns is increasing.

In addition, a concept of "tire fashionization" has recently emerged in the tire industry. On the premise of ensuring the running performance of the tire, it is also required to improve the aesthetics and fashion of the tire pattern. This also puts forward higher requirements on the update speed of the tire pattern. In order to be able to adapt to the industry's increasing requirements for tire renewal capabilities, higher requirements are also placed on the tire tread design and production capacity of tire manufacturers.

At present, the design and development process of the tire pattern is mainly as follows: first, the designer designs a new tire pattern pattern; according to the newly designed pattern, the tire is manually carved to produce a test sample; the test sample is tested, and relevant information is collected. Performance data; when the test data meets the target requirements, the mold is manufactured according to the design pattern; finally, the manufactured tire mold is put into tire production.

The traditional tire pattern design process has many procedures and a long cycle, which cannot meet the increasingly frequent tire pattern update requirements. Especially the manual engraving process, which is one of the main reasons for the long tire pattern design cycle. Moreover, manual engraving is also prone to dimensional errors. If the dimensional accuracy of the processed tire pattern cannot be effectively controlled, it will affect the test results. have a great influence on the effectiveness of the test, and even produce wrong experimental data. Therefore, the design speed of the traditional tire pattern is greatly restricted.

Moreover, in tire retreading, especially when retreading giant tires, the usual means are to be processed manually at present. Similarly, the efficiency of manual processing is low, and the processing accuracy cannot be guaranteed.

In addition, in the process of tire processing, sometimes hot cutting of tire tread is involved. In the hot cutting process, it is necessary to set the hot cutting tool at a suitable hot cutting temperature, and during the hot cutting process, the hot cutting tool is required to maintain a constant hot cutting temperature. How to choose a suitable heating temperature and how to ensure that the heating temperature is kept constant are problems that need to be solved urgently.

Therefore, in the field of tire production, there is a need for a tire pattern processing system that can improve the tire pattern processing accuracy, shorten the tire pattern design cycle, etc., and the tire pattern automatic processing system allows the selection of the most suitable hot cutting processing temperature according to different tires. And the processing temperature can be kept constant during the hot cutting process.

Contents of the invention

The present invention is made to solve the problems of the prior art described above. The purpose of the present invention is to provide an automatic tire pattern processing system, which can keep the operating temperature of the hot cutting tool constant during the hot cutting process. And further, the system is capable of heat cutting at an appropriate operating temperature.

The tire pattern automatic processing system includes a temperature control device for a hot cutting tool, the temperature control device includes: a numerical control component; a power regulating device, the power regulating device is connected with the numerical control component, receives a control signal from the numerical control component, and according to the control signal Adjusting the power supply parameters of the hot-cutting tool; and an operating parameter monitoring component, the operating parameter monitoring device monitors the operating parameters of the hot-cutting tool, and sends the monitored operating parameters to the numerical control unit.

Through the temperature control device, the temperature of the hot cutting tool can be adjusted accurately and efficiently, so as to ensure that the hot cutting tool performs hot cutting at an appropriate temperature, for example, a constant temperature.

In a specific structure, the power adjustment device may include: a power adjustment unit, the power adjustment unit is connected with the numerical control unit, and receives a control signal from the numerical control unit; and a transformer, the transformer is connected with the power adjustment unit, so that the power adjustment unit can control the The transformer operates, changes the voltage output by the transformer, and the transformer supplies the voltage to the hot cutter.

Specifically, the power regulating component may include a temperature monitoring component and/or a voltage/current monitoring component, and correspondingly, the operating parameters may include the operating temperature of the hot cutting tool and/or the ratio of the operating voltage to the operating current of the hot cutting tool.

Alternatively, the power adjustment device is an adjustable pulse discharge device, which is connected to the numerical control component, receives the control signal from the numerical control component, and adjusts at least one of the frequency and pulse width of the current provided to the hot cutting tool according to the control signal. A sort of. In this way, the temperature of the hot cutting tool is indirectly adjusted by adjusting the current frequency and pulse width.

Further, the temperature monitoring component is an infrared thermal imager, a thermocouple or a thermal resistance, and the voltage/current monitoring component may be a voltage/current transmitter or a voltage and current sensor.

The tire pattern automatic processing system of the present invention includes the above temperature control device. Wherein, at least one of the numerical control component and the power adjustment component can be integrated into the control unit of the tire pattern automatic processing system.

The present invention also relates to a method for using the above-mentioned control device to control the temperature of the hot cutting tool, the method comprising the following steps: a. Selecting the set operating parameters of the hot cutting tool; b. During the hot cutting process, monitoring by the operating parameter monitoring component The actual operating parameters of the hot cutting tool; c. comparing the actual operating parameters with the set operating parameters; and d. according to the comparison result in step c, the numerical control unit controls the power supply parameters to the hot cutting tool through the power adjustment device.

Wherein, the above-mentioned step a may further include the following steps: e. switch the hot cutting tool to manual mode; Select the operating temperature, and conduct the cutting experiment again, and if the cutting experiment shows that the operating temperature is suitable, then use the operating parameters of the hot cutting tool at this operating temperature as the set operating parameters, and record the set operating parameters in the CNC components .

And in step d: if the actual operating parameter is greater than the set operating parameter, the numerical control component outputs a signal to the power regulating device to reduce the power supply parameter of the hot cutting tool, and the power supply parameter of the hot cutting tool is reduced through the power regulating device until The actual operating parameter is equal to the set operating parameter; if the actual operating parameter is less than the set operating parameter, the numerical control component outputs a signal to the power adjustment component to increase the power supply parameter of the hot cutting tool, and the power supply parameter of the hot cutting tool increases through the power adjustment component. Large until the actual operating parameter is equal to the set operating parameter; if the actual operating parameter is equal to the set operating parameter, the CNC components will not act.

Regarding the adjustment of the operating parameters of the hot cutting tool, it can be realized through the combination of the power adjustment component and the transformer, wherein the output voltage of the transformer to the hot cutting tool is adjusted.

Alternatively, the adjustment of the operating parameters of the hot cutting tool can be realized by setting an adjustable pulse discharge device, wherein the adjustable pulse discharge device adjusts at least one of the frequency and pulse width of the current supplied to the hot cutting tool according to the control signal.

Wherein, the above-mentioned set operating parameters and actual operating parameters may be the operating temperature of the hot cutting tool, or the ratio of voltage and current when the hot cutting tool is running, and the ratio corresponds to the operating temperature of the hot cutting tool.

Through the temperature control device of the hot cutting tool of the tire pattern automatic processing system and the temperature control method implemented by the control device, the temperature of the hot cutting tool can be kept constant during the hot cutting process, and the hot cutting tool can be further Appropriate operating temperature for hot cutting.

Description of drawings

Fig. 1 shows a front view of the tire pattern automatic processing system of the present invention.

Fig. 2 is a top view of the tire pattern automatic processing system shown in Fig. 1 .

Fig. 3 shows a schematic structural block diagram of the temperature control device for the hot cutting tool of the tire pattern automatic processing system.

Fig. 4～6 has shown the flow chart of the first embodiment of the hot cutting tool temperature control method of the present invention, and what Fig. 4 has shown is the general flow of this method, and Fig. 5 has shown the setting suitable operating temperature of this method The specific flow of the steps, and Fig. 6 shows the specific flow of the step of controlling the hot cutting tool to be at a constant temperature.

Fig. 7 and 8 have shown the flow chart of the second embodiment of the temperature control method of hot cutting tool of the present invention, wherein, Fig. 7 has shown the concrete flow of the step of setting suitable operating temperature of this method, and Fig. 8 is The specific flow of the step of controlling the hot cutting tool to be at a constant temperature is shown. .

Detailed ways

<First embodiment>

Fig. 1 shows a tire pattern automatic processing system 1 according to the first embodiment of the present invention. The tire pattern automatic processing system 1 includes a processing assembly 10 and a tire support 30, and the processing assembly 10 is mounted on a gantry structure 50 so as to be movable in at least one direction. The tire pattern automatic processing system 1 also includes a control unit 40 that can control the actions of the processing assembly 10 and the tire support 30 in a wired or wireless manner.

The machining assembly 10 includes a ram 11 mounted on a crossbeam 51 of the gantry structure 50 and can slide on the crossbeam 51 in the horizontal direction X so as to approach or move away from the tire mounted on the tire support 30 in the horizontal direction. tire. A column 12 that can move along the vertical direction Z is connected to the ram 11 , so that the column 12 can approach or move away from the tire in the vertical direction. A spindle processing unit 13 is provided at the lower end of the column 12 , and the spindle processing unit 13 is preferably rotatable around a rotation axis B. As shown in FIG.

The gantry structure 50 also includes at least two fixed columns 52 to support the beam 51 .

In the configuration shown in FIG. 1, the tire mount 30 supports a tire positioned horizontally. Also, this tire mount 30 enables the tire to revolve around the axis of rotation C, as shown in the top view in FIG. 2 . Of course, the machining assembly 10 can also be arranged so that the spindle machining unit 13 can move along the tire's circumferential direction, and the effect is the same as the tire's rotation around the axis C.

The structure of the above-disclosed automatic tire pattern processing system 1 includes a processing assembly 10, and various spindle processing units 13 can be replaced on the processing assembly 10 according to different processing needs, such as milling processing units, hot cutting processing units, etc. . However, the tire pattern automatic processing system 1 may also include a plurality of processing assemblies 10, and different spindle processing units 13 are respectively arranged on these processing assemblies 10 for performing different types of processing operations. For example, it may include two processing assemblies 10, wherein One processing assembly 10 is provided with a milling processing unit, and the other processing assembly 10 is provided with a hot cutting processing unit.

Fig. 3 shows a schematic structural block diagram of various components used to control the temperature of the hot cutting tool on the hot cutting processing unit in the automatic tire pattern processing system 1 of the present invention. As shown in Figure 3, the hot cutting tool temperature control device of the tire pattern automatic processing system 1 includes a numerical control component 41, which is connected to a power adjustment component 42, for example, can be connected in a wired or wireless manner, so that the numerical control component 41 can The adjustment signal is sent to the power adjustment unit 42 . Furthermore, the power conditioning unit 42 is connected to the transformer 43 , which can also be wired or wireless, so as to allow the power conditioning unit 42 to operate the transformer 43 . The transformer 43 supplies power to the hot cutting tool 14 installed on the spindle processing unit 13, and the voltage output by the transformer 43 is adjustable, as will be disclosed in detail below. A specific form of the transformer 43 is a pulse transformer, and may also be other types of voltage regulators, such as thyristor voltage regulators.

In the present invention, the numerical control component 41 and the power regulation component 42 can be set in the control unit 40, or can also be set separately.

The hot cutting tool temperature control device also includes a temperature detection component 44 , and the specific form of the temperature detection component 44 can be, for example, an infrared thermal imager, a thermocouple, a thermal resistance, and the like. The temperature detecting component 44 can be arranged near the hot cutting tool 14 to detect the operating temperature of the hot cutting tool 14 . Moreover, the temperature detection component 44 can communicate with the numerical control component 41 through wired or wireless means, and transmit the detected temperature information of the hot cutting tool 14 to the numerical control component 41 .

In addition, as an alternative to the power adjustment unit 42 and the transformer 43, an adjustable pulse discharge device (not shown) may also be provided, which is connected to the numerical control unit 41 and receives a control signal from the numerical control unit 41 . According to the control signal, the adjustable pulse discharge device can adjust the discharge frequency and/or pulse width of the current supplied to the hot cutting tool, that is, control its temperature by controlling the power supply parameters of the hot cutting tool.

The temperature control method of the hot cutting tool of the present invention will be described below.

As shown in FIG. 4 , the method for controlling the temperature of the hot cutting tool 14 of the present invention can generally be divided into two parts. Firstly, in step 100, an appropriate operating temperature is set for the hot-cutting knife 14, and then, in step 200, the hot-cutting knife 14 during operation is controlled so that it is in a constant temperature state.

Fig. 5 shows the specific steps of setting the operating temperature. First, in step 110 , in the state that the hot cutting tool 14 has been installed on the spindle processing unit 13 , the working mode of the hot cutting tool 14 is switched to the manual mode. Next, in step 120, an operating temperature is set for the hot cutting tool 14, and then a cutting experiment is performed to determine whether the operating temperature is appropriate. If the test result shows that the operating temperature is not suitable, adjust the operating temperature of the hot cutting tool 14 in step 130, and then return to step 120 to perform the cutting experiment again. If the experimental results show that the operating temperature is appropriate, then in step 140 record the operating temperature as the set temperature T1, for example record the set temperature T1 in the parameter table in the numerical control unit 41 . The set temperature T1 can be directly read by the operator when setting the temperature in steps 120 and 130 , or can be detected by the temperature detection unit 44 and transmitted to the numerical control unit 41 .

Next, FIG. 6 shows a method of controlling the operating temperature of the hot cutting tool 14 to keep the operating temperature constant when the hot cutting process is performed. As shown in FIG. 6 , after the operating temperature is set, in step 210 , the working mode of the hot cutting tool 14 is switched to the automatic mode, so as to hot cut the tire pattern. Then, in step 220, the actual temperature T2 of the hot cutting tool 14 during the hot cutting process is measured. The actual temperature T2 is measured by comparing the measured actual temperature T2 of the hot cutting tool 14 with the set temperature T1 in step 230 . This comparison can be performed by the numerical control unit 41 .

If the result of the comparison is that the actual temperature T2 is greater than the set temperature T1, the numerical control unit 41 outputs a signal related to a decrease in the voltage value to the power adjustment unit 42 (step 240). After receiving the signal that the relevant voltage value decreases, the power regulating part 42 acts, for example, its thyristor opening decreases, thereby the voltage value output by the transformer 43 decreases (step 250), until the actual temperature T2 of the hot cutting tool 14 is equal to The set temperature T1 is the same (step 280).

If the result of the comparison is that the actual temperature T2 is lower than the set temperature T1, the numerical control component 41 outputs a signal related to an increase in the voltage value to the power regulation component 42 (step 260). After receiving the signal that the relevant voltage value increases, the power regulating part 42 acts, for example, its thyristor opening increases, thereby the voltage value output by the transformer 43 increases (step 270), until the actual temperature T2 of the hot cutting tool 14 is equal to The set temperature T1 is the same (step 280).

If the result of the comparison is that the actual temperature T2 is equal to the set temperature T1 , the numerical control unit 41 does not perform any actions, and the temperature control method directly enters step 280 .

Alternatively, in the above-mentioned step of adjusting the temperature, when an adjustable pulse discharge device is used to replace the power adjustment component and the transformer as the power adjustment device, by controlling the frequency and pulse width of the power supply to the hot cutting tool 14, the temperature of the hot cutting tool 14 is adjusted. The power supply parameters, thereby controlling the temperature of the hot cutting tool.

In the method described above, the mentioned set temperature T1 and actual temperature T2 may specifically refer to the high point temperature of the hot cutting tool 14 .

Furthermore, in the above method, the step of setting an appropriate operating temperature is performed manually, but it is also possible to perform the setting semi-automatically or automatically. For example, in step 120, the operator determines whether the hot cutting temperature is appropriate, and then the numerical control unit 41 can automatically adjust the operating temperature of the hot cutting tool 14 with a predetermined adjustment amount. Even, the numerical control component 41 can also automatically judge whether the hot cutting temperature is appropriate, which can be realized by inputting the processing standard parameters in the numerical control component 41 in advance. These processing parameters may include, for example, tread depth, width, smoothness, and the like.

<Second Embodiment>

A second embodiment of the present invention will be described below. The second embodiment relates to another control method for the operating temperature of the hot cutting tool 14, which can be a substitute for the control method in the first embodiment, or an additional control method. Generally speaking, in the second embodiment, the indirect control of the operating temperature of the hot cutting tool is realized based on the voltage and current values when the hot cutting tool 14 is in operation. Correspondingly, in the second embodiment, voltage/current detection is used components instead of the temperature detection components in the first embodiment, or an additional voltage/current detection component may be provided on the basis of the temperature detection components.

The method of the second embodiment also includes the steps of operating temperature setting and operating temperature control. As shown in Figure 7, when carrying out the setting of operating temperature, in step 110 ', the working mode of hot-cutting cutter 14 is switched to manual mode, then in step 120 ', set an operating temperature for hot-cutting cutter 14, then cut Experiment to determine if the operating temperature is appropriate. If the experimental result shows that the operating temperature is not suitable, then adjust the operating temperature of the hot cutting tool 14 in step 130', and then return to step 120' to perform the cutting experiment again. If the experimental results show that the operating temperature is suitable, then in step 140', the voltage U1 and current I1 in the hot cutting tool 14 at this time are measured, and the measured voltage U1 and current I1 are recorded by, for example, the numerical control unit 41 , the numerical control unit 41 records the ratio of the voltage U1 to the current I1 as the set ratio X1.

Then, as shown in Figure 8, after the operating temperature is set, the working mode of the hot cutting tool 14 is switched to the automatic mode in step 210', so as to hot cut the tire pattern. Then, in step 220', the actual voltage U2 and actual current I2 on the hot cutting tool 14 during the hot cutting process are measured, and the ratio of the actual voltage U2 to the actual current I2 is obtained as the actual ratio X2. Among them, voltage and current can be measured by measuring components such as voltage/current transmitters and voltage/current sensors, and the calculation and storage of the ratio of voltage and current can be completed by the numerical control component 41 . Next, in step 230', the obtained actual ratio X2 is compared with the set ratio X1. This comparison can also be carried out by the numerical control unit 41 .

If the result of the comparison is that the actual ratio X2 is greater than the set ratio X1, then the numerical control unit 41 outputs a signal to the power adjustment unit 42 about the decrease of the voltage value (step 240'). After receiving the signal that the relevant voltage value decreases, the opening of the thyristor of the power regulating part 42 decreases, and then the voltage value output by the transformer 43 decreases (step 250'), until the actual ratio X2 of the hot cutting tool 14 is equal to the set value X2. The ratio X1 is the same (step 280').

If the result of the comparison is that the actual ratio X2 is smaller than the set ratio X1, the numerical control unit 41 outputs a signal related to an increase in the voltage value to the power adjustment unit 42 (step 260'). After receiving the signal that the relevant voltage value increases, the opening of the thyristor of the power regulating part 42 increases, and then the voltage value output by the transformer 43 increases (step 270 '), until the actual ratio X2 of the hot cutting tool 14 is equal to the set value. The ratio X1 is the same (step 280').

And if the result of the comparison is that the actual ratio X2 is equal to the set ratio X1, then the numerical control component 41 does not perform any action, and the temperature control method directly enters step 280'.

It can be seen that in the second embodiment, the temperature control of the hot cutting tool 14 is realized by detecting the voltage and current value of the hot cutting tool 14, specifically by monitoring the ratio between the voltage and current of the hot cutting tool 14, to realize the temperature control of the hot cutting tool 14. The temperature control of the hot cutter 14 is to keep the constant temperature of the hot cutter 14. At this time, a voltage/current transmitter or a voltage/current sensor is used as the operating parameter monitoring component of the hot cutting tool 14 .

Further, the operating temperature of the hot cutting tool 14 and the operating voltage and current of the hot cutting tool 14 can be used as control parameters at the same time, for example, the operating temperature can be used as the main control parameter, and the operating voltage and current can be used as auxiliary control parameters, etc.

Claims (13)

1. a kind of temperature control equipment of earnestly cutter, it is characterised in that the temperature control equipment includes：

Numerical control parts；

PCU Power Conditioning Unit, the PCU Power Conditioning Unit are connected with the numerical control parts, receive and control from the numerical control parts Signal, and the power supply parameter according to control signal regulation to the earnestly cutter；And

Operational factor monitoring component, the operational factor of the operational factor monitoring device monitoring earnestly cutter, and will monitoring To operational factor be sent to the numerical control parts.

2. temperature control equipment as claimed in claim 1, it is characterised in that the PCU Power Conditioning Unit includes：

Power adjusting section, the power adjusting section are connected with the numerical control parts, receive and control from the numerical control parts Signal；And

Transformer, the transformer are connected with the power adjusting section, enable the power adjusting section to the transformation Device is operated, and changes the voltage of the transformer output, and the transformer supplies voltage to the earnestly cutter.

3. temperature control equipment as claimed in claim 2, it is characterised in that the power adjusting section includes temperature monitoring portion Part and/or voltage/current monitoring component, and the operational factor includes the earnestly operation temperature of cutter and/or the heat The operating voltage of cutter and the ratio of operation electric current.

4. temperature control equipment as claimed in claim 2, it is characterised in that the PCU Power Conditioning Unit is that adjustable pulse is put Electric installation, the adjustable pulse discharge means are connected with the numerical control parts, receive the control from the numerical control parts Signal, and it is supplied to earnestly at least one of the frequency of the electric current of cutter and pulsewidth according to control signal regulation.

5. temperature control equipment as claimed in claim 3, it is characterised in that the temperature monitoring part is infrared thermal imaging Instrument, thermoelectricity occasionally thermal resistance, the voltage/current monitoring component are voltage/current transmitter or voltage/current sensor.

6. a kind of tyre tread automatic processing system, it is characterised in that the tyre tread automatic processing system includes：

Tire abutment, the tire abutment are used to fix tire to be processed；

Processing assembly, the processing assembly include column and the spindle processing unit on the column, wherein, the master Axle machining cell and the tire abutment can or remotely relative motion close to each other along at least one direction, it is and/or described The tire on spindle processing unit and the tire abutment can move relative to each other along the circumference of the tire；

Control unit, described control unit control the action of the tire abutment and the processing assembly；And

Such as temperature control equipment according to any one of claims 1 to 5.

7. tyre tread automatic processing system as claimed in claim 6, it is characterised in that the numerical control parts and the power At least one in regulating member is integrated in described control unit.

A kind of 8. method for the temperature for controlling fervent cutter using control device as claimed in claim 1, it is characterised in that Methods described comprises the following steps：

A. the setting operational factor of the earnestly cutter is determined；

B. during earnestly process, by the actual motion of the operational factor monitoring component monitoring earnestly cutter Parameter；

C. by the actual operation parameters compared with the setting operational factor；And

D. the comparative result in step c, controlled by the numerical control parts and adjusted by the PCU Power Conditioning Unit to institute State the power supply parameter of fervent cutter.

9. method as claimed in claim 8, it is characterised in that step a further comprises following steps：

E. the earnestly cutter is switched to manual mode；And

F. an operation temperature is set for the earnestly cutter, cutting experiment is then carried out, if cutting experiment shows the operation Temperature is improper, then reselects the operation temperature, and carries out cutting experiment again, and if cutting experiment shows the operation Temperature is suitable, then using the earnestly operational factor of the cutter under this operation temperature as the setting operational factor, and by institute Setting operational factor is stated to recorded in the numerical control parts.

10. method as claimed in claim 8, it is characterised in that in the step d：

If the actual operational parameters are more than the setting operational factor, the numerical control parts is defeated to the PCU Power Conditioning Unit The signal for the power supply parameter reduction sent as an envoy to the earnestly cutter, and made by the PCU Power Conditioning Unit to the fervent cutter Power supply parameter reduce, until the actual operation parameters are equal to the setting operational factor；

If the actual operation parameters are less than the setting operation parameter, the numerical control parts is defeated to the power adjusting section The signal for the power supply parameter increase sent as an envoy to the earnestly cutter, and made by the power adjusting section to the fervent cutter Power supply parameter increase, until the actual operation parameters are equal to the setting operational factor；

If the actual operation parameters are equal to the setting operational factor, the numerical control parts is failure to actuate.

11. method as claimed in claim 10, it is characterised in that the PCU Power Conditioning Unit includes：

Power adjusting section, the power adjusting section are connected with the numerical control parts, receive and control from the numerical control parts Signal；And

Transformer, the transformer are connected with the power adjusting section, enable the power adjusting section to the transformation Device is operated, and changes the voltage of the transformer output, and the transformer supplies voltage to the earnestly cutter；

And in the step d of methods described, adjust the output electricity for being supplied to the earnestly cutter by the transformer Pressure.

12. method as claimed in claim 10, it is characterised in that the PCU Power Conditioning Unit is that adjustable pulsed discharge fills Put, the adjustable pulse discharge means are connected with the numerical control parts, receive the control signal from the numerical control parts； And in the step d of methods described, it is supplied to by the regulation pulse discharge means according to control signal regulation Earnestly at least one of the frequency of the electric current of cutter and pulsewidth.

13. the method as any one of claim 8~12, it is characterised in that the setting operational factor is the heat The setting operation temperature of cutter, the actual operation parameters are the practical operation temperature of the earnestly cutter；And/or described set It is the earnestly operating voltage of cutter and the setting ratio of operation electric current to determine operational factor, and the actual operation parameters are described The fervent operating voltage of cutter and the actual ratio of operation electric current.