Flushing control method and system and machine tool

Abstract

The invention relates to the field of machine tool control, in particular to a flushing control method and system and a machine tool, and the method comprises the steps: building a relation function between the length of a cutter on a main shaft and the flushing pressure of a flushing system, obtaining the length of the cutter on the main shaft, calculating or determining the flushing pressure of the flushing system according to the relation function and the length of the cutter, and calculating or determining the flushing pressure of the flushing system according to the flushing pressure. And controlling the flushing pressure output by the flushing system. According to the method, the flushing system is controlled to output the corresponding flushing pressure through the relation function of the cutter length and the flushing pressure of the flushing system, so that different cutter lengths are used for flushing under different flushing pressures, and the flushing adaptability of cooling water in the center of the main shaft is improved.

Description

Technical Field

[0001] The present invention relates to the field of machine tool control, and in particular to a flushing control method, system and machine tool. Background Art

[0002] In existing technology, the amount of central cooling water in a machine tool spindle is controlled by a conventional motor. The pressure of this central cooling water is determined by the motor's power. For example, if a 3.5kW motor is used, the central cooling water pressure is essentially fixed at 30 bar and cannot be changed. Consequently, all tools in the machine tool are flushed using this 30-bar pressure. This inability to adjust the flushing pressure to suit different tool processing requirements makes existing central cooling water flushing systems for machine tool spindles less adaptable and limited in their use cases.

[0003] Based on the above problems, how to improve the adaptability of flushing of the cooling water of the machine tool spindle center is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In order to solve the above problems, the object of the present invention is to provide a flushing control method, device and machine tool.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a flushing control method for a machine tool, wherein the machine tool includes a spindle and a flushing system for flushing a tool on the spindle. The flushing control method includes the following steps:

[0007] S100: establishing a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, where the relationship function represents the recommended flushing pressure of the flushing system under different tool lengths;

[0008] S200: Get the tool length of the tool on the spindle;

[0009] S300: Calculating or determining the flushing pressure of the flushing system according to the relationship function and the tool length;

[0010] S400: Controlling the flushing pressure output by the flushing system according to the flushing pressure.

[0011] Furthermore, in step S100, the expression of the relational function is:

[0012] P=F(L)

[0013] Wherein, P represents the pressure value, L represents the tool length of the tool on the spindle, and F(L) represents the flushing pressure value when the tool length is L and the tool length interval is F.

[0014] Furthermore, the relationship function is a piecewise function, which indicates that when the tool length is in different tool length intervals, the flushing pressure is a different preset value;

[0015] Wherein, step S300 includes: determining the tool length interval to which the acquired tool length belongs, and determining a preset value of the flushing pressure according to the tool length interval to which it belongs.

[0016] Furthermore, determining the tool length interval to which the acquired tool length belongs, and determining the preset value of the flushing pressure according to the tool length interval specifically includes:

[0017] Determine the tool length interval to which the acquired tool belongs, and generate a gear position signal according to the tool length interval. Different tool length intervals correspond to different gear position signals.

[0018] Based on the gear signal, output a frequency signal, voltage signal or current signal corresponding to the gear signal;

[0019] According to the received frequency signal, voltage signal or current signal, the flushing system outputs a corresponding frequency signal, voltage signal or current signal to control the flushing pressure.

[0020] Furthermore, the tool length intervals are divided into a first length interval, a second length interval, a third length interval and a fourth length interval;

[0021] The gear position signal includes a first gear position signal, a second gear position signal, a third gear position signal, and a fourth gear position signal; the frequency signal includes a first frequency signal, a second frequency signal, a third frequency signal, and a fourth frequency signal; the flushing pressure includes a first flushing pressure, a second flushing pressure, a third flushing pressure, and a fourth flushing pressure;

[0022] generating a first gear position signal according to the first length interval, outputting a first frequency signal based on the first gear position signal, and controlling the flushing system to output a first flushing pressure according to the first frequency signal;

[0023] generating a second gear position signal according to the second length interval, outputting a second frequency signal based on the second gear position signal, and controlling the flushing system to output a second flushing pressure according to the second frequency signal;

[0024] generating a third gear signal according to the third length interval, outputting a third frequency signal based on the third gear signal, and controlling the flushing system to output a third flushing pressure according to the third frequency signal;

[0025] A fourth gear signal is generated based on the fourth length interval, a fourth frequency signal is output based on the fourth gear signal, and the flushing system is controlled to output a fourth flushing pressure according to the fourth frequency signal.

[0026] Furthermore, the tool length in the first length interval is [0mm, 60mm), the tool length in the second length interval is [60mm, 120mm), the tool length in the third length interval is [120mm, 180mm), and the tool length in the fourth length interval is above 180mm.

[0027] The frequency of the first frequency signal is between 100 Hz and 200 Hz, the frequency of the second frequency signal is between 300 Hz and 400 Hz, the frequency of the third frequency signal is between 500 Hz and 600 Hz, and the frequency of the fourth frequency signal is between 700 Hz and 900 Hz.

[0028] The first flushing water pressure is between 10 bar and 20 bar, the second flushing water pressure is between 20 bar and 40 bar, the third flushing water pressure is between 40 bar and 60 bar, and the fourth flushing water pressure is between 60 bar and 80 bar.

[0029] Furthermore, the flushing system is provided with a regulating valve for regulating water pressure. In step S400, the flushing pressure output by the flushing system is controlled by the regulating valve according to the flushing pressure.

[0030] Step S200 specifically includes: obtaining the tool length of the current tool on the spindle by measuring with a tool setting probe.

[0031] Furthermore, the flushing system also includes a pressure sensor and a display, and the display is used to display the water outlet pressure value of the flushing system detected by the pressure sensor.

[0032] A second aspect of the present invention provides a water flushing control system for use in a machine tool. The machine tool includes a spindle and a water flushing system for flushing a tool on the spindle. The water flushing control system includes:

[0033] A storage module is used to store a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, where the relationship function represents the recommended flushing pressure of the flushing system under different tool lengths;

[0034] An acquisition module is used to obtain the tool length of the tool on the spindle;

[0035] The calculation module is connected to the storage module and the acquisition module, and is used to calculate or determine the flushing pressure of the flushing system according to the relationship function and the tool length;

[0036] The control module is connected to the calculation module and is used to control the flushing pressure output by the flushing system according to the flushing pressure.

[0037] The third aspect of the present invention provides a machine tool, including a base, a worktable, a column, a spindle and a control system; the worktable and the column are arranged on the base, and the spindle is arranged on the column; it is characterized in that the control system is the above-mentioned flushing control system, or the control system is used to implement steps in any one of the flushing control methods.

[0038] The beneficial effects of the present invention lie in establishing a relationship function between the tool length on the spindle and the flushing pressure of the flushing system. In actual operation, the tool length on the spindle is obtained, and based on the relationship function and the obtained tool length, the flushing pressure of the flushing system is calculated or determined. Based on the flushing pressure, the flushing pressure output by the flushing system is controlled. By using the relationship function between tool length and the flushing pressure of the flushing system, the present application controls the flushing pressure output by the flushing system to achieve flushing with different flushing pressures for different tool lengths, thereby improving the flushing adaptability of the spindle center cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0040] Figure 1 is a flow chart of the flushing control method of the present invention;

[0041] Figure 2 It is a module diagram of the flushing control system of the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0043] During machine tool processing, a flushing system is required to flush the tool on the spindle to ensure effective cooling and chip removal during cutting. However, tools of different lengths require different flushing pressures during cutting. Excessively high flushing pressures can damage the tool or reduce machining accuracy, while excessively low flushing pressures may not effectively cool or remove chips. Therefore, this embodiment provides a flushing control method to meet the machining requirements of different tool lengths.

[0044] refer to Figure 1A first aspect of an embodiment of the present invention provides a flushing control method, which is applied to a machine tool. The machine tool includes a spindle and a flushing system for flushing a tool on the spindle. The method includes the following steps:

[0045] S100: establishing a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, where the relationship function represents the recommended flushing pressure of the flushing system under different tool lengths;

[0046] S200: Get the tool length of the tool on the spindle;

[0047] S300: Calculating or determining the flushing pressure of the flushing system according to the relationship function and the tool length;

[0048] S400: Controlling the flushing pressure output by the flushing system according to the flushing pressure.

[0049] This application controls the corresponding flushing pressure output by the flushing system through the relationship function between the tool length and the flushing pressure of the flushing system, so as to achieve flushing with different flushing pressures for different tool lengths, thereby improving the flushing adaptability of the spindle center cooling water.

[0050] Step S100 is specifically as follows:

[0051] Establishing a functional relationship between tool length and flushing pressure: Cutting experiments were conducted using various tool lengths, such as 50mm, 60mm, 70mm, 80mm, 100mm, 120mm, 150mm, and 200mm, under the same machining conditions (such as cutting speed and feed rate). During the experiments, a pressure sensor was used to monitor the flushing pressure of the flushing system in real time, and the flushing pressure values ​​that achieved optimal cooling and chip evacuation for different tool lengths were recorded. Based on the collected data, a mathematical method was used to fit the functional relationship between tool length and flushing pressure. For example, the fitted functional expression is P = F(L), where P represents the pressure value, L represents the tool length of the spindle tool, and F(L) represents the flushing pressure value when the tool length is L and within the tool length range F. Various functional relationships can also be used for fitting, such as a linear function, P = F(L) = aL + b, or a quadratic function, P = F(L) = aL. 2 +bL+c, where a, b, and c are constants, and their specific values ​​are determined based on the results of curve fitting.

[0052] Step S200 is specifically as follows:

[0053] A length sensor is installed on the machine tool spindle. When a tool is mounted on the spindle, the sensor measures the tool length in real time and transmits the measurement data to the machine tool's control system. In this embodiment, the tool length of the tool currently mounted on the spindle can be measured using a tool setter. Alternatively, if the machine tool does not have the ability to automatically measure tool length, the operator can manually enter the tool length information through the machine tool's user interface.

[0054] In the above embodiment, preferably, step S300 includes:

[0055] The tool length interval to which the acquired tool length belongs is determined, and a preset value of the flushing pressure is determined according to the tool length interval to which it belongs.

[0056] Determining the tool length interval to which the acquired tool length belongs, and determining the preset value of the flushing pressure according to the tool length interval includes:

[0057] S301: Determine the tool length interval to which the acquired tool belongs, and generate a gear position signal according to the tool length interval. Different tool length intervals correspond to different gear position signals.

[0058] S302: Based on the gear position signal, output a frequency signal, a voltage signal, or a current signal corresponding to the gear position signal;

[0059] S303: Based on the received frequency signal, voltage signal, or current signal, the flushing system outputs a corresponding frequency signal, voltage signal, or current signal to control the flushing pressure.

[0060] Specifically, after receiving tool length data, the machine tool's control system automatically calculates the recommended flush pressure for the current tool length based on a previously established relationship function. For example, if the tool length is 100mm, substituting the relationship function P = F(L), the flush system outputs a flush pressure of 30 bar. See the following explanation for details. Alternatively, a table can be pre-established that maps tool lengths to flush pressures, and the control system can then directly look up the corresponding flush pressure value from the table based on the acquired tool length.

[0061] This application obtains the length of the tool currently installed on the spindle, determines which tool length range the tool belongs to, and then outputs a corresponding output signal based on the tool length range to which it belongs. The output signal includes a frequency signal, a voltage signal, or a current signal; for example, based on the frequency signal, the flushing system outputs the corresponding frequency signal and the corresponding flushing pressure, so as to achieve different flushing pressures for different tool lengths, thereby improving the flushing adaptability of the spindle center cooling water.

[0062] In the above embodiment, step S400 may specifically be:

[0063] Based on the calculated or determined flushing pressure, the machine tool's control system sends a control signal to the flushing system's pressure regulator, adjusting the flushing system's output pressure to the target value. During the flushing process, a pressure sensor monitors the flushing system's actual output pressure in real time and feeds this data back to the control system. If the actual pressure deviates from the target pressure, the control system promptly adjusts the control signal to stabilize the flushing system's output pressure near the target value, ensuring optimal tool cooling and chip removal.

[0064] By implementing the above-mentioned flushing control method, the machine tool can automatically adjust the flushing pressure of the flushing system according to the actual length of the tool on the spindle, avoiding problems such as tool damage and reduced processing accuracy caused by improper flushing pressure, improving the processing quality and efficiency of the machine tool, and at the same time extending the service life of the tool and reducing production costs.

[0065] The principle of this application is described in detail below:

[0066] The equipment implemented in this embodiment may include a spindle system, a tool length detection device, a signal processing module, a signal generator, a drive module, and a flushing system. The spindle system is used to mount and drive the cutting tool for cutting. The tool length detection device is installed near the spindle and can accurately obtain the length of the tool on the spindle. The tool length detection device can use a laser rangefinder, a contact length gauge, a tool setter, or other devices to obtain the length of the current tool on the spindle. The signal processing module is used to receive the tool length information and determine the tool length range to which the tool belongs. It then generates a corresponding gear position signal based on the tool length position. The signal generator is used to output a corresponding output signal based on the received gear position signal. This output signal can be a frequency signal, a voltage signal, or a current signal. If the signal generator is a frequency converter, it outputs a corresponding frequency signal based on the received gear position signal. The following examples use frequency converters as an example. The drive module, such as a motor, outputs a speed based on the received frequency signal. Different motor speeds can output different power, causing the flushing system to output water pressure corresponding to the frequency. The flushing system includes components such as a water outlet pipe and a nozzle.

[0067] In one specific embodiment, after the tool to be used is mounted on the spindle, the length of the tool on the spindle is measured. For example, the length of the tool currently on the spindle is measured using a tool setter. After receiving the tool length information, the tool length range to which the tool belongs is determined based on a preset tool length range classification standard. For example, tool lengths are divided into three ranges: short tools [0-100mm], medium tools [101-200mm], and long tools (201mm and above). If the measured tool length is 150mm, the tool is determined to be in the medium tool range. In order to accommodate a wider range of tools, the tool length can also be divided into four ranges: the tool length range of the first length range is [0mm, 60mm), and the tools in this length range are some small, short-shank tools. These tools usually generate less heat and chips during cutting; the tool length range of the second length range is [60mm, 120mm), and the tools in this length range are medium-length tools, which have relatively high requirements for cooling and chip removal during the cutting process; the tool length range of the third length range is [120mm, 180mm), and these tools generate more heat and chips during cutting, and require higher flushing pressure to ensure the processing effect; the tool length of the fourth length range is 180mm and above. These tools are large, long-shank tools, which have difficulty in dissipating heat and removing chips during cutting and require maximum flushing pressure.

[0068] The correspondence between different tool length intervals and gear signals is pre-set. The first length interval corresponds to the first gear signal (such as 01), the second length interval corresponds to the second gear signal (such as 02), the third length interval corresponds to the third gear signal (such as 03), and the fourth length interval corresponds to the fourth gear signal (such as 04). After determining the tool length interval to which the tool belongs, the corresponding gear signal is generated. In this embodiment, if the tool length is 150mm, which belongs to the third length interval, the third gear signal (03) is generated, and the generated gear signal is transmitted to the frequency generator.

[0069] Based on the received gear signal, the frequency generator outputs a corresponding frequency signal from a preset frequency-gear signal correspondence. For example, the first gear signal 01 corresponds to a first frequency signal between 100Hz and 200Hz, specifically 120Hz, 150Hz, 180Hz, etc.; the second gear signal 02 corresponds to a second frequency signal between 300Hz and 400Hz, specifically 360Hz, 380Hz, etc.; the third gear signal 03 corresponds to a third frequency signal between 500Hz and 600Hz, specifically 550Hz, 600Hz, etc.; and the fourth gear signal 04 corresponds to a fourth frequency signal between 700Hz and 900Hz, specifically 750Hz, 800Hz, 840Hz, etc.

[0070] The driving module receives the frequency signal output by the frequency converter and adjusts the output flushing pressure according to the received frequency signal. The relationship function of this embodiment is a piecewise function, which means that when the tool length is in different tool length intervals, the flushing pressure is a different preset value. For example:

[0071] According to the first frequency signal between 100 Hz and 200 Hz, the water pressure output by the flushing system is the first flushing pressure, and the first flushing pressure is between 10 bar and 20 bar; specifically, the first flushing pressure can be 10 bar or 15 bar.

[0072] According to the second frequency signal between 300Hz-400Hz, the water pressure output by the flushing system is the second flushing pressure, and the second flushing pressure is between 20bar-40bar; specifically, the first flushing pressure can be 25bar, 30bar, 35bar, etc.

[0073] According to the third frequency signal between 500Hz-600Hz, the water pressure output by the flushing system is the third flushing pressure, which is between 40bar-60bar; specifically, the third flushing pressure can be 45bar, 50bar, 55bar

[0074] According to the fourth frequency signal between 700 Hz and 900 Hz, the water pressure output by the flushing system is a fourth flushing pressure of 60 bar to 80 bar. Specifically, the fourth flushing pressure can be 65 bar, 70 bar, or 75 bar. Of course, other values ​​are also possible.

[0075] Through the method of this embodiment, the flushing pressure can be automatically adjusted according to the different lengths of tools, ensuring that suitable cooling and chip removal conditions are always provided for the tool during the processing process, thereby improving the processing quality, extending the tool life, and improving the processing efficiency.

[0076] In one specific embodiment, the flushing system is equipped with a regulating valve for regulating water pressure. This valve can further adjust the water pressure value based on the gear position. For example, when receiving the second gear position signal, the frequency converter outputs a second frequency signal, increasing the motor speed to a corresponding level, thereby controlling the flushing system to output a second flushing pressure. Based on this, the regulating valve can be adjusted, for example, to a 50% opening to increase the output flushing pressure above the 30 bar water pressure to meet tool cooling and chip removal requirements. The frequency converter controls the motor speed and the regulating valve controls the opening, thereby regulating the flushing system's output corresponding flushing pressure. This dual control of the regulating valve and the frequency converter allows for better adaptation to varying tool lengths.

[0077] In one specific embodiment, the flushing system is also connected to a display for displaying the outlet water pressure of the flushing system. For example, when the flushing system outputs the third flushing pressure, the display shows the current pressure value as 50 bar. A pressure sensor on the flushing system monitors the outlet water pressure in real time and transmits the pressure value to the display. After receiving the pressure value, the display visually displays the current outlet water pressure in numerical and graphical form for easy viewing by the operator. The operator can view the outlet water pressure in real time through the display without the need for additional measuring equipment.

[0078] A second aspect of an embodiment of the present invention provides a flushing control system, which is applied to a machine tool. The machine tool includes a spindle and a flushing system for flushing a tool on the spindle. Figure 2 , flushing control system includes:

[0079] The storage module 100 is used to store a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, where the relationship function represents the recommended flushing pressure of the flushing system under different tool lengths;

[0080] An acquisition module 200 is used to acquire the tool length of the tool on the spindle;

[0081] The calculation module 300 is connected to the storage module and the acquisition module, and is used to calculate or determine the flushing pressure of the flushing system according to the relationship function and the tool length;

[0082] The control module 400 is connected to the calculation module and is used to control the flushing pressure output by the flushing system according to the flushing pressure.

[0083] It should be noted that, under the premise of no conflict, the system implemented in this embodiment can fully implement the above-mentioned flushing control method, by obtaining the length of the tool currently installed on the spindle, judging which tool length range the tool belongs to, and then outputting the corresponding frequency signal according to the tool length range to which it belongs. The water outlet module outputs the corresponding flushing pressure according to the corresponding frequency signal, so as to achieve different flushing pressures for different tool lengths, thereby improving the flushing adaptability of the spindle center cooling water.

[0084] A third aspect of an embodiment of the present invention provides a machine tool, comprising a base, a worktable, a column, a spindle assembly and a control system; the worktable and the column are arranged on the base, and the spindle assembly is arranged on the column; the control system is the above-mentioned flushing control system, or the control system is used to implement the steps in any one of the above-mentioned flushing control methods.

[0085] The flushing system of the machine tool of the present application outputs corresponding flushing pressure according to the corresponding output signal (such as frequency signal) to achieve flushing with different flushing pressures for different tool lengths, thereby improving the flushing adaptability of the spindle center cooling water.

[0086] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flushing control method, applied to a machine tool, wherein the machine tool comprises a spindle and a flushing system for flushing a tool on the spindle, wherein: The flushing control method comprises the following steps: S100: establishing a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, wherein the relationship function represents the recommended flushing pressure of the flushing system under different tool lengths; S200: Acquire the tool length of the tool on the spindle; S300: Calculating or determining the flushing pressure of the flushing system according to the relationship function and the tool length; S400: Controlling the flushing water pressure output by the flushing system according to the flushing water pressure.

2. The flushing control method according to claim 1, characterized in that: In step S100, the expression of the relationship function is: P=F(L) Wherein, P represents the pressure value, L represents the tool length of the tool on the spindle obtained, and F(L) represents the flushing pressure value when the tool length is L and the tool length interval is F.

3. The flushing control method according to claim 2, characterized in that: The relationship function is a piecewise function, and the piecewise function indicates that when the tool length is in different tool length intervals, the flushing pressure is a different preset value; Wherein, step S300 includes: determining the tool length interval to which the acquired tool length belongs, and determining the preset value of the flushing pressure according to the tool length interval to which it belongs.

4. The flushing control method according to claim 3, characterized in that: The determining of the tool length interval to which the acquired tool length belongs, and determining the preset value of the flushing pressure according to the tool length interval specifically includes: Determine the tool length interval to which the acquired tool belongs, and generate a gear position signal according to the tool length interval, where different tool length intervals correspond to different gear position signals; Based on the gear signal, output a frequency signal, a voltage signal, or a current signal corresponding to the gear signal; According to the received frequency signal, voltage signal or current signal, the flushing system outputs a signal corresponding to the frequency signal, voltage signal or current signal to control the flushing pressure.

5. The flushing control method according to claim 4, characterized in that: The tool length intervals are divided into a first length interval, a second length interval, a third length interval and a fourth length interval; The gear position signal includes a first gear position signal, a second gear position signal, a third gear position signal, and a fourth gear position signal; the frequency signal includes a first frequency signal, a second frequency signal, a third frequency signal, and a fourth frequency signal; the flushing pressure includes a first flushing pressure, a second flushing pressure, a third flushing pressure, and a fourth flushing pressure; generating a first gear position signal according to the first length interval, outputting a first frequency signal based on the first gear position signal, and controlling the flushing system to output a first flushing pressure according to the first frequency signal; generating a second gear position signal according to the second length interval, outputting a second frequency signal based on the second gear position signal, and controlling the flushing system to output a second flushing pressure according to the second frequency signal; generating the third gear position signal according to the third length interval, outputting the third frequency signal based on the third gear position signal, and controlling the flushing system to output a third flushing pressure according to the third frequency signal; The fourth gear signal is generated based on the fourth length interval, the fourth frequency signal is output based on the fourth gear signal, and the flushing system is controlled to output a fourth flushing pressure according to the fourth frequency signal.

6. The flushing control method according to claim 5, characterized in that: The tool length in the first length interval is [0mm, 60mm), the tool length in the second length interval is [60mm, 120mm), the tool length in the third length interval is [120mm, 180mm), and the tool length in the fourth length interval is above 180mm. The frequency of the first frequency signal is between 100 Hz and 200 Hz, the frequency of the second frequency signal is between 300 Hz and 400 Hz, the frequency of the third frequency signal is between 500 Hz and 600 Hz, and the frequency of the fourth frequency signal is between 700 Hz and 900 Hz. The first flushing water pressure is between 10 bar and 20 bar, the second flushing water pressure is between 20 bar and 40 bar, the third flushing water pressure is between 40 bar and 60 bar, and the fourth flushing water pressure is between 60 bar and 80 bar.

7. The flushing control method according to any one of claims 1 to 6, characterized in that: The flushing system is provided with a regulating valve for regulating water pressure. In step S400, the flushing pressure output by the flushing system is controlled by the regulating valve according to the flushing pressure. Step S200 specifically includes: obtaining the tool length of the current tool on the spindle by measuring with a tool setting probe.

8. The flushing control method according to any one of claims 1 to 6, characterized in that: The flushing system further includes a pressure sensor and a display, and the display is used to display the water outlet pressure value of the flushing system detected by the pressure sensor.

9. A flushing control system, applied to a machine tool, the machine tool comprising a spindle and a flushing system for flushing a tool on the spindle, characterized in that: The flushing control system includes: a storage module, configured to store a relationship function between the tool length on the spindle and the flushing pressure of the flushing system, wherein the relationship function represents a recommended flushing pressure of the flushing system at different tool lengths; An acquisition module, used for acquiring the tool length of the tool on the spindle; a calculation module connected to the storage module and the acquisition module, and configured to calculate or determine the flushing pressure of the flushing system according to the relationship function and the tool length; The control module is connected to the calculation module and is used to control the flushing pressure output by the flushing system according to the flushing pressure.

10. A machine tool comprising a base, a workbench, a column, a spindle and a control system; the workbench and the column are arranged on the base, and the spindle is arranged on the column; characterized in that: The control system is the flushing control system according to claim 9, or the control system is used to implement the steps in the flushing control method according to any one of claims 1 to 9.

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