Intelligent monitoring system and method for numerical control machine tools

Abstract

An intelligent monitoring system and method for a numerically controlled machine tool, comprising a processing module composed of a fixture for fixing a workpiece to be processed and an intelligent tool holder for loading a corresponding tool head, a detection module for respectively detecting the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor, an analysis module for analyzing whether the processing of the workpiece by the machine tool meets the standard based on the processing parameters and operating parameters measured by the detection module, and a transmission module for transmitting the adjustment instructions output by the analysis module to the corresponding components so that the components receiving the adjustment instructions change their processing parameters or operating parameters, so as to overcome the problem in the prior art that there is a lack of protection measures for the tool when facing a complex processing process, thereby causing damage to the tool head during operation, increasing the operating cost of the machine tool and reducing the processing efficiency of the machine tool for the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of tool protection, and in particular to an intelligent monitoring system and method for a numerically controlled machine tool. Background Art

[0002] Milling CNC machine tools, also known as milling machines or multifunctional machines, are CNC machine tools that combine turning and milling operations on one machine tool. They can perform multiple operations such as turning, facing, drilling, tapping and milling on one machine tool. The main advantage of milling CNC machine tools is that they can perform complex machining operations in a single operation, without the need to transfer workpieces between multiple machines, saving time and improving overall production efficiency. However, due to the complexity of milling CNC machine tools, the frequency of failures during machining is also higher than that of ordinary machine tools. Therefore, it is of great significance to adopt more effective monitoring methods for milling CNC machine tools.

[0003] Chinese patent publication number: CN115722922A discloses a multifunctional turning and milling compound CNC machine tool; it meets different processing requirements through the cooperation of a clamping device, a longitudinal axis device and a fixing mechanism, and collects waste chips generated during the processing by providing two collection boxes that can approach and move away from each other to avoid sputtering;

[0004] It can be seen that the multifunctional turning-milling compound CNC machine tool has the following problems: when the machine tool faces a complex machining process, it lacks protection measures for the tool, which causes damage to the cutter head during operation, increasing the operating cost of the machine tool while reducing the machine tool's machining efficiency for the workpiece. Summary of the invention

[0005] To this end, on one hand, the present invention provides an intelligent monitoring system and method for a CNC machine tool to overcome the problem of lack of protective measures for tool in the prior art.

[0006] To achieve the above object, the present invention provides an intelligent monitoring system and method for a CNC machine tool, comprising:

[0007] A processing module is arranged on a bed of a CNC machine tool, and includes a fixture for fixing a workpiece to be processed and an intelligent tool holder for loading a corresponding tool head; a first motor is arranged in the fixture for driving the workpiece to rotate, and a second motor is arranged in the intelligent tool holder for controlling the rotation of the corresponding tool head. The intelligent tool holder completes the cutting and grinding of the workpiece by using the corresponding tool head;

[0008] A detection module, which is connected to the corresponding components in the processing module, and is used to detect the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor respectively;

[0009] an analysis module connected to the detection module, for determining the processing parameters for the workpiece according to the current processing procedure when it is determined based on the vibration frequency of the tool head measured by the detection module that the processing of the workpiece by the machine tool does not meet the standard, or determining the operating parameters for the components in the processing module according to the rotation speed of the first motor; the processing parameters include the single cutting amount for the workpiece and the rotation speed of the second motor; the operating parameters include the clamping force of the intelligent tool holder for the tool and the operating time node of the first motor or the intelligent tool holder; the analysis module is also used to output corresponding adjustment instructions according to the determined result;

[0010] The transmission module is connected to the analysis module and the processing module respectively, and is used to transmit the adjustment instruction output by the analysis module to the corresponding component so that the component receiving the adjustment instruction changes its processing parameter or operation parameter.

[0011] Further, the analysis module is used to determine the processing parameters for the workpiece according to the processing procedure for the workpiece determined based on the type of tool head used by the intelligent tool holder when it is preliminarily determined according to the vibration frequency of the tool head that the machine tool does not process the workpiece in accordance with the standard;

[0012] Or, it is used to determine the operating parameters of the corresponding component according to the processing state of the workpiece by the intelligent tool holder determined based on the rotation speed of the first motor when it is determined that the machine tool's processing of the workpiece does not meet the standard according to the vibration frequency of the tool head.

[0013] Further, the analysis module is further used to determine, based on the type of the tool head, when the machining process for the workpiece is cutting, to determine, based on the average value of the first motor speed and the second motor speed, a vibration frequency reference for determining whether the machining of the workpiece by the machine tool meets the standard;

[0014] Or, when the processing step for the workpiece is grinding according to the type of the tool head, the processing parameters for the workpiece are determined based on the rotation speed of the second motor.

[0015] Furthermore, the analysis module is provided with a plurality of correction methods for the vibration frequency reference based on an average value of the first motor speed and the second motor speed, and the correction amplitude of each correction method for the vibration frequency reference is different.

[0016] Furthermore, the analysis module is also used to determine the single cutting amount of the processing module during the grinding process of the workpiece based on the rotation speed of the second motor when it is determined that the processing procedure for the workpiece is grinding, or to re-determine the movement speed of the tool head during the grinding process.

[0017] Furthermore, the analysis module is provided with a plurality of cutting amount adjustment methods for a single cutting amount during workpiece grinding based on the difference between the second motor speed and a preset speed set therein, and the single cutting amount adjusted using each cutting amount adjustment method is different.

[0018] Furthermore, the analysis module is provided with a plurality of speed adjustment methods for the movement speed of the cutter head during workpiece grinding based on the difference between the preset speed and the second motor speed, and the movement speed of the cutter head adjusted by each speed adjustment method is different.

[0019] Further, the analysis module is further used to determine the clamping force of the intelligent tool holder on the tool when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is turning when it is determined that the processing of the workpiece by the machine tool does not meet the standard, or determine the operation time node of the first motor or the intelligent tool holder when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is intelligent milling;

[0020] The analysis module is further configured to determine a processing parameter for the workpiece based on the rotation speed of the second motor when the processing state of the workpiece by the intelligent tool holder determined based on the rotation speed of the first motor is milling.

[0021] Furthermore, the analysis module is provided with several clamping force adjustment methods for the clamping force of the intelligent tool holder on the tool based on the rotational speed of the first motor, and the clamping forces of the intelligent tool holder on the tool adjusted using each clamping force adjustment method are all different; the analysis module is provided with several adjustment methods for the operating time nodes of the fixture and the intelligent tool holder based on the difference between the rotational speed of the first motor and the preset first motor rotational speed standard set by it, and the operating time nodes obtained under each adjustment method are all different.

[0022] On the other hand, the present invention also provides a method comprising the following steps:

[0023] Step S1, the first motor in the processing module drives the workpiece to rotate, the second motor in the processing module drives the intelligent tool holder to rotate, and the intelligent tool holder completes the cutting and grinding of the workpiece by using the corresponding tool head;

[0024] Step S2, the detection module detects the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor respectively during the machining process;

[0025] Step S3, the analysis module determines whether the processing of the workpiece by the machine tool meets the standard based on the vibration frequency of the tool head measured by the detection module, and when it is determined that it does not meet the standard, determines the processing parameters for the workpiece according to the current processing procedure, or determines the operating parameters for the components in the processing module according to the rotation speed of the first motor, and outputs corresponding adjustment instructions according to the determined result;

[0026] In step S4, the transmission module transmits the adjustment instruction output by the analysis module to the corresponding component so that the component receiving the adjustment instruction changes its processing parameters or operating parameters.

[0027] Compared with the prior art, the beneficial effect of the present invention lies in that, the detection module and the analysis module are set in the present invention, so that the analysis module determines whether the processing of the workpiece meets the preset standard according to the measured vibration frequency, and determines the processing parameters for the workpiece according to the current processing procedure when it is preliminarily determined that the processing does not meet the standard, thereby improving the accuracy of determining the working state of the machine tool with respect to the cutter head, and helping to improve the stability and flexibility of the CNC machine tool in processing the workpiece; at the same time, the analysis module is also used to determine the operating parameters for the components inside the processing module according to the rotation speed of the first motor, further improving the stability of the CNC machine tool in processing the workpiece, and through effective clamping of the cutter head, the stability of the cutter head during use can be effectively improved, thereby avoiding the situation where the cutter head does not contact the workpiece at a standard angle, causing damage to the cutter head caused by the workpiece, effectively improving the protection efficiency of the machine tool of the present invention for the cutter head, and reducing the operating cost of the machine tool while effectively improving the processing efficiency of the machine tool for the workpiece.

[0028] Furthermore, the analysis module is also used to determine, based on the average value of the first motor speed and the second motor speed, a vibration frequency benchmark for judging whether the processing of the workpiece by the machine tool meets the standard when the processing procedure for the workpiece is cutting according to the type of the tool head, or to determine, based on the speed of the second motor, a processing parameter for the workpiece when the processing procedure for the workpiece is grinding according to the type of the tool head, thereby further improving the protection efficiency of the tool head of the CNC machine tool, effectively improving the processing efficiency of the machine tool for the workpiece while reducing the operating cost of the machine tool.

[0029] Furthermore, the analysis module corrects the vibration frequency reference based on the average value of the first motor speed and the second motor speed, further improving the protection efficiency of the CNC machine tool for the tool head, while reducing the operating cost of the machine tool and effectively improving the processing efficiency of the machine tool for the workpiece.

[0030] Furthermore, the analysis module is also used to determine the single cutting amount of the processing module during the grinding process of the workpiece based on the rotation speed of the second motor when it is determined that the processing procedure for the workpiece is grinding, or to re-determine the movement speed of the tool head during the grinding process, so as to further improve the protection efficiency of the tool head of the CNC machine tool, effectively improve the processing efficiency of the machine tool for the workpiece while reducing the operating cost of the machine tool.

[0031] Furthermore, the analysis module adjusts the single cutting amount during the workpiece grinding process based on the difference between the speed of the second motor and the preset speed set therein, thereby further improving the protection efficiency of the CNC machine tool for the cutter head, while reducing the operating cost of the machine tool and effectively improving the processing efficiency of the machine tool for the workpiece.

[0032] Furthermore, the analysis module adjusts the movement speed of the cutter head during workpiece grinding based on the difference between the preset speed and the speed of the second motor, thereby further improving the protection efficiency of the cutter head of the CNC machine tool, reducing the operating cost of the machine tool and effectively improving the processing efficiency of the machine tool for the workpiece.

[0033] Furthermore, the analysis module is also used to determine the clamping force of the intelligent tool holder for the tool when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is turning when it is determined that the machine tool's processing of the workpiece does not meet the standard, or to determine the operating time node of the first motor or the intelligent tool holder when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is intelligent milling, thereby effectively improving the processing efficiency of the machine tool for the workpiece, eliminating hidden dangers in the processing process of the workpiece by the CNC machine tool, further improving the protection efficiency of the machine tool for the tool head, and reducing the operating cost of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the intelligent monitoring system for CNC machine tools according to an embodiment of the present invention;

[0035] Figure 2 It is a side structural diagram of an intelligent monitoring system for a CNC machine tool according to an embodiment of the present invention;

[0036] Figure 3 It is a structural block diagram of an intelligent monitoring system for a CNC machine tool according to an embodiment of the present invention;

[0037] Figure 4 A flowchart of the steps of the intelligent monitoring method of a CNC machine tool according to an embodiment of the present invention;

[0038] Figure 5 This is a flow chart of the determination of whether the vibration frequency of the tool head meets the standard by the analysis module of the intelligent monitoring system of the CNC machine tool according to the embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0041] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0042] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1 and Figure 2 As shown, it is a schematic diagram of the structure of the intelligent monitoring system for CNC machine tools according to an embodiment of the present invention. Figure 3The block diagram of the intelligent monitoring system of a numerically controlled machine tool according to an embodiment of the present invention comprises a processing module, a detection module, an analysis module and a transmission module; wherein the processing module is arranged on the bed of the numerically controlled machine tool, and comprises a fixture 1 for fixing a workpiece 4 to be processed and an intelligent tool holder 2 for loading a corresponding tool head 3; a first motor (not shown in the figure) is arranged in the fixture 1 for driving the workpiece 4 to rotate, and a second motor (not shown in the figure) is arranged in the intelligent tool holder 2 for controlling the rotation of the corresponding tool head 3, and the intelligent tool holder 2 completes the cutting and grinding of the workpiece 4 by using the corresponding tool head 3; the detection module is connected to the corresponding components in the processing module, and is used to respectively detect the vibration frequency of the tool head 3 in the intelligent tool holder 2, the rotation speed of the first motor and the rotation speed of the second motor; the analysis module is connected to the detection module The module is connected to the detection module, and is used to determine the processing parameters for the workpiece 4 according to the current processing procedure when it is determined that the machine tool's processing of the workpiece 4 does not meet the standards based on the vibration frequency of the tool head 3 measured by the detection module, or to determine the operating parameters for the components in the processing module according to the rotation speed of the first motor; the processing parameters include the single cutting amount for the workpiece 4 and the rotation speed of the second motor; the operating parameters include the clamping force of the intelligent tool holder 2 for the tool and the operating time node of the first motor or the intelligent tool holder 2; the analysis module is also used to output corresponding adjustment instructions according to the determined results; the transmission module is connected to the analysis module and the processing module, and is used to transmit the adjustment instructions output by the analysis module to the corresponding components so that the components receiving the adjustment instructions change their processing parameters or operating parameters.

[0045] In the present invention, the processing module controls the movement of the fixture 1 and the intelligent tool holder 2. The detection module detects the vibration frequency of the intelligent tool holder 2 clamping the tool head 3 and the rotation speed of the first motor and the rotation speed of the second motor during the processing and sends them to the analysis module for comparison with the preset standard to determine whether the working state of the processing module is qualified. If the working state of the processing module is unqualified, the analysis module calculates the best adjustment method and sends an adjustment instruction. The transmission module transmits the adjustment instruction output by the analysis module to the corresponding component in the processing module to complete the adjustment of the machine tool processing state.

[0046] See also Figure 4 As shown, it is a flowchart of the steps of the intelligent monitoring method of a CNC machine tool according to an embodiment of the present invention; an intelligent monitoring method of a CNC machine tool comprises the following steps:

[0047] Step S1, the first motor in the processing module drives the workpiece to rotate, the second motor in the processing module drives the intelligent tool holder to rotate, and the intelligent tool holder completes the cutting and grinding of the workpiece by using the corresponding tool head;

[0048] Step S2, the detection module detects the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor respectively during the machining process;

[0049] Step S3, the analysis module determines whether the processing of the workpiece by the machine tool meets the standard based on the vibration frequency of the tool head measured by the detection module, and when it is determined that it does not meet the standard, determines the processing parameters for the workpiece according to the current processing procedure, or determines the operating parameters for the components in the processing module according to the rotation speed of the first motor, and outputs corresponding adjustment instructions according to the determined result;

[0050] Step S4, the transmission module transmits the adjustment instruction output by the analysis module to the corresponding component so that the component receiving the adjustment instruction changes its processing parameters or operating parameters.

[0051] See also Figure 5 As shown, it is a flow chart of the determination of whether the vibration frequency of the tool head 3 meets the standard by the analysis module of the present invention; the analysis module is used to determine whether the processing of the workpiece 4 by the machine tool meets the preset standard based on the comparison result of the vibration frequency of the tool head 3 detected by the detection module and the vibration frequency standard preset in the analysis module, wherein:

[0052] The first determination method is that the analysis module determines that the vibration frequency of the tool head 3 meets the vibration frequency standard preset in the analysis module, and determines that the current machine tool is qualified for processing the workpiece 4; the first determination method satisfies the standard that the vibration frequency is less than or equal to the preset first vibration frequency, and sets the first preset vibration frequency to 1KHz;

[0053] The second determination method is that the analysis module preliminarily determines that the vibration frequency of the tool head 3 does not meet the vibration frequency standard preset in the analysis module, and the analysis module determines the processing parameters for the workpiece according to the processing procedure for the workpiece determined based on the type of tool head used by the intelligent tool holder; the second determination method satisfies that the vibration frequency is greater than the preset first vibration frequency standard and less than or equal to the preset second vibration frequency standard, and the preset second vibration frequency is set to 2KHz;

[0054] The third judgment method is that the analysis module determines that the vibration frequency of the tool head 3 does not meet the vibration frequency standard preset in the analysis module, and determines that there are hidden dangers in the current processing of the workpiece 4 by the machine tool, and the analysis module determines the corresponding operating parameters of the component based on the processing state of the workpiece determined by the intelligent tool holder based on the rotational speed of the first motor; the third judgment method satisfies that the vibration frequency is greater than the preset second vibration frequency.

[0055] Specifically, when the analysis module determines that the vibration frequency of the tool head 3 satisfies the second determination method, the processing procedure for the workpiece 4 is determined according to the type of the tool head 3:

[0056] If the process is cutting, the analysis module is provided with a plurality of correction methods for the vibration frequency reference based on the average value of the rotation speeds of the first motor and the second motor detected by the detection module; the vibration frequency reference includes the first preset vibration frequency and the second preset vibration frequency;

[0057] If the process is grinding, the analysis module determines that the vibration frequency of the cutter head 3 is unqualified, and determines a processing method based on the rotation speed of the second motor detected by the detection module.

[0058] Specifically, when the analysis module determines that the machining process for the workpiece is cutting according to the type of the tool head, a correction method for the vibration frequency reference is provided based on the average value of the first motor speed and the second motor speed, wherein:

[0059] The first correction method is that the analysis module determines that the average value of the first motor speed and the second motor speed meets the average value standard preset in the analysis module, and the first vibration frequency standard is increased by 10%; the first correction method satisfies that the average value of the first motor speed and the second motor speed is greater than the first preset average value standard, and the first preset average value standard is set to 2000Vc / πD;

[0060] The second correction method is that the analysis module preliminarily determines that the average value of the first motor speed and the second motor speed does not meet the average value standard preset in the analysis module, and the second vibration frequency standard is increased by 10%; the second correction method satisfies that the average value of the first motor speed and the second motor speed is less than or equal to the first preset average value standard and greater than the second preset average value standard, and the second preset average value standard is set to 1500Vc / πD;

[0061] The third correction method is that the analysis module determines that the average value of the first motor speed and the second motor speed does not meet the average value standard preset in the analysis module, and the first vibration frequency standard and the second vibration frequency standard are both increased by 10%; the third correction method satisfies that the average value of the first motor speed and the second motor speed is less than or equal to the second preset average value standard, and the second preset average value standard is set to 1000Vc / πD;

[0062] After the analysis module completes the correction of the vibration frequency standard of the tool head 3, the analysis module secondary determines whether the machine tool's processing of the workpiece 4 is qualified based on the comparison result between the vibration frequency of the tool head 3 and the corrected vibration frequency standard of the tool head 3. The analysis module determines that the current machine tool's processing of the workpiece 4 is qualified under the first judgment method, and determines that there are hidden dangers in the current machine tool's processing of the workpiece 4 under the second judgment method or the third judgment method. The analysis module determines the corresponding operating parameters of the component based on the processing state of the intelligent tool holder for the workpiece determined based on the rotational speed of the first motor.

[0063] Specifically, the analysis module is further used to determine the processing parameters of the processing module for the workpiece 4 based on the rotation speed of the second motor when it is determined that the processing procedure for the workpiece 4 is grinding, wherein:

[0064] If the speed of the second motor is greater than or equal to the second motor speed standard preset in the analysis module, the analysis module adjusts the single cutting amount of the cutter head 3 for the workpiece 4 based on the difference between the actual speed of the second motor and the preset second motor speed standard; the second motor speed standard is set to 1800Vc / πD;

[0065] If the rotation speed of the second motor is lower than the second motor rotation speed standard preset in the analysis module, the analysis module adjusts the movement speed of the cutter head 3 during the grinding process based on the difference between the actual rotation speed of the second motor and the preset second motor rotation speed standard.

[0066] Specifically, the analysis module determines a cutting amount adjustment method for a single cutting amount during the grinding process of the workpiece 4 based on the difference between the second motor speed and a preset speed set therein, wherein:

[0067] The first cutting amount adjustment method is that the analysis module determines that the difference between the second motor speed and the preset second motor speed meets the preset difference standard, then the single cutting amount of the cutter head 3 during the grinding of the workpiece 4 is reduced by 0.3 cm; the first cutting amount adjustment method satisfies that the difference between the second motor speed and the preset second motor speed is less than or equal to the first preset speed difference standard, and the first preset speed difference standard is set to 500Vc / πD;

[0068] The second cutting amount adjustment method is that the analysis module preliminarily determines that the difference between the second motor speed and the preset second motor speed does not meet the preset difference standard, then the single cutting amount of the cutter head 3 during the grinding of the workpiece 4 is reduced by 0.2 cm; the second cutting amount adjustment method satisfies that the difference between the second motor speed and the preset second motor speed is greater than the first preset speed difference standard and is less than or equal to the second preset speed difference standard, and the second preset speed difference standard is set to 600Vc / πD;

[0069] The third cutting amount adjustment method is that if the analysis module determines that the difference between the second motor speed and the preset second motor speed does not meet the preset difference standard, the single cutting amount of the cutter head 3 on the workpiece 4 during the grinding process is reduced by 0.1 cm; the third cutting amount adjustment method satisfies the difference between the second motor speed and the preset second motor speed is greater than the second preset speed difference standard.

[0070] Specifically, the analysis module determines the speed adjustment method of the tool head 3 during the grinding process of the workpiece 4 based on the difference between the preset speed and the second motor speed, wherein:

[0071] The first speed adjustment method is that the analysis module determines that the difference between the second motor speed and the preset second motor speed meets the preset difference standard, and reduces the speed of the cutter head 3 during the grinding of the workpiece 4 by 300 mm / min; the first speed adjustment method satisfies that the difference between the second motor speed and the preset second motor speed is less than or equal to the first preset speed difference standard;

[0072] The second speed adjustment method is that the analysis module preliminarily determines that the difference between the second motor speed and the preset second motor speed does not meet the preset difference standard, and reduces the speed of the cutter head 3 during the grinding of the workpiece 4 by 200 mm / min; the second speed adjustment method satisfies that the difference between the second motor speed and the preset second motor speed is greater than the first preset speed difference standard and is less than or equal to the second preset speed difference standard;

[0073] The third speed adjustment method is that the analysis module determines that the difference between the second motor speed and the preset second motor speed does not meet the preset difference standard, and reduces the speed of the cutter head 3 during the grinding process of the cutter head 3 on the workpiece 4 by 100 mm / min; the third speed adjustment method satisfies that the difference between the second motor speed and the preset second motor speed is greater than the second preset speed difference standard.

[0074] Specifically, the analysis module is further used to determine the clamping force of the intelligent tool rest 2 on the tool when the processing state of the workpiece 4 determined by the intelligent tool rest 2 based on the rotation speed of the first motor is turning when it is determined that the processing of the workpiece 4 by the machine tool does not meet the standard, or determine the operation time node of the first motor or the intelligent tool rest 2 when the processing state of the workpiece 4 determined by the intelligent tool rest 2 based on the rotation speed of the first motor is intelligent milling;

[0075] Specifically, the analysis module is further used to determine the processing parameters for the workpiece 4 based on the rotation speed of the second motor when the processing state of the workpiece 4 determined by the intelligent tool holder 2 based on the rotation speed of the first motor is milling:

[0076] If the speed of the first motor is greater than or equal to the first motor speed standard preset in the analysis module, the analysis module determines that the machine tool is in a turning state; the analysis module adjusts the clamping force of the intelligent tool holder 2 on the tool based on the actual speed of the first motor; the first motor speed standard is set to 1500Vc / πD, and the turning state means that the second motor is fixed, and only the first motor is running to complete the processing of the workpiece 4;

[0077] If the speed of the first motor is less than the first motor speed standard and greater than zero, the analysis module determines that the machine tool is in the intelligent milling state; the analysis module adjusts the operation time nodes of the fixture 1 and the intelligent tool holder 2 based on the difference between the actual speed of the first motor and the preset first motor speed standard; the intelligent milling state means that the first motor and the cutter head 3 cooperate to complete the continuous processing of the workpiece 4 on different planes;

[0078] If the speed of the first motor is zero, the analysis module determines that the machine tool is in the milling state and that the vibration frequency of the cutter head 3 is unqualified, and determines the processing parameters for the workpiece 4 based on the speed of the second motor; the milling state means that the first motor is fixed, and only the second motor is running to complete the processing of the workpiece 4.

[0079] Specifically, the analysis module determines a clamping force adjustment method for the clamping force of the intelligent tool holder 2 on the tool based on the rotation speed of the first motor, wherein:

[0080] The first clamping force adjustment mode is that the analysis module determines that the rotation speed of the first motor meets the preset first motor rotation speed standard, and the clamping force of the intelligent tool holder 2 on the tool is increased by 50N; the first clamping force adjustment mode satisfies that the rotation speed of the first motor is greater than or equal to the preset first rotation speed standard, and the preset first rotation speed standard is set to 2000Vc / πD;

[0081] The second clamping force adjustment method is that the analysis module determines that the rotation speed of the first motor does not meet the preset first motor rotation speed standard, and the clamping force of the intelligent tool holder 2 on the tool is increased by 100N; the second clamping force adjustment method satisfies that the rotation speed of the first motor is less than the preset first rotation speed standard.

[0082] Specifically, the analysis module is provided with an adjustment method for the operation time nodes of the fixture 1 and the intelligent tool holder 2 based on the difference between the rotation speed of the first motor and the preset first motor rotation speed standard, wherein:

[0083] The first time node adjustment method is that the analysis module determines that the difference between the rotation speed of the first motor and the preset first motor rotation speed standard set by it meets the standard, then the operation time node of the first motor performing the corresponding action is advanced by 1s, and the operation time node of the intelligent tool holder 2 performing the corresponding action is kept unchanged. At this time, the interval between the operation time node of the first motor performing the corresponding action and the operation time node of the intelligent tool holder 2 performing the corresponding action is 1s; the first time node adjustment method satisfies that the difference between the rotation speed of the first motor and the preset first motor rotation speed standard set by it is less than or equal to the first motor rotation speed difference standard;

[0084] The second time node adjustment method is that if the analysis module determines that the difference between the rotation speed of the first motor and the preset first motor rotation speed standard set by it does not meet the standard, the operation time node of the first motor performing the corresponding action is advanced by 1s, and the operation time node of the intelligent tool holder 2 performing the corresponding action is delayed by 1s. At this time, the interval between the operation time node of the first motor performing the corresponding action and the operation time node of the intelligent tool holder 2 performing the corresponding action is 2s; the second time node adjustment method satisfies that the difference between the rotation speed of the first motor and the preset first motor rotation speed standard set by it is greater than the first motor speed difference standard.

[0085] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent monitoring system for a CNC machine tool, characterized in that: include: A processing module is arranged on a bed of a CNC machine tool, and includes a fixture for fixing a workpiece to be processed and an intelligent tool holder for loading a corresponding tool head; a first motor is arranged in the fixture for driving the workpiece to rotate, and a second motor is arranged in the intelligent tool holder for controlling the rotation of the corresponding tool head. The intelligent tool holder completes the cutting and grinding of the workpiece by using the corresponding tool head; A detection module, which is connected to the corresponding components in the processing module, and is used to detect the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor respectively; an analysis module connected to the detection module, for determining the processing parameters for the workpiece according to the current processing procedure when it is determined based on the vibration frequency of the tool head measured by the detection module that the processing of the workpiece by the machine tool does not meet the standard, or determining the operating parameters for the components in the processing module according to the rotation speed of the first motor; the processing parameters include the single cutting amount for the workpiece and the rotation speed of the second motor; the operating parameters include the clamping force of the intelligent tool holder for the tool and the operating time node of the first motor or the intelligent tool holder; the analysis module is also used to output corresponding adjustment instructions according to the determined result; A transmission module, which is connected to the analysis module and the processing module respectively, and is used to transmit the adjustment instructions output by the analysis module to the corresponding components so that the components receiving the adjustment instructions change their processing parameters or operating parameters; The analysis module is used to determine the processing parameters for the workpiece according to the processing procedure for the workpiece determined based on the type of tool head used by the intelligent tool holder when it is preliminarily determined according to the vibration frequency of the tool head that the processing of the workpiece by the machine tool does not meet the standard; Or, when it is determined according to the vibration frequency of the tool head that the processing of the workpiece by the machine tool does not meet the standard, the operating parameters of the corresponding component are determined according to the processing state of the workpiece by the intelligent tool holder determined based on the rotation speed of the first motor; The analysis module is also used to determine, based on the type of the tool head, that the machining process for the workpiece is cutting, and to determine, based on the average value of the first motor speed and the second motor speed, a vibration frequency reference for determining whether the machining of the workpiece by the machine tool meets the standard; Or, when the machining process for the workpiece is grinding according to the type of the tool head, the machining parameters for the workpiece are determined based on the rotation speed of the second motor; The analysis module is provided with a plurality of correction methods for the vibration frequency reference based on the average value of the first motor speed and the second motor speed, and the correction amplitude of each correction method for the vibration frequency reference is different; The analysis module is further used to determine the single cutting amount of the processing module in the process of grinding the workpiece based on the rotation speed of the second motor when it is determined that the processing procedure for the workpiece is grinding, or to re-determine the moving speed of the tool head in the process of grinding; The analysis module is provided with a plurality of cutting amount adjustment methods for a single cutting amount during the grinding of a workpiece based on the difference between the second motor speed and a preset speed set therein, and the single cutting amount adjusted by each cutting amount adjustment method is different; The analysis module is provided with a plurality of speed adjustment methods for the moving speed of the cutter head during the grinding of the workpiece based on the difference between the preset speed and the speed of the second motor, and the moving speed of the cutter head adjusted by each speed adjustment method is different; The analysis module is also used to determine the clamping force of the intelligent tool holder on the tool when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is turning when it is determined that the processing of the workpiece by the machine tool does not meet the standard, or determine the operation time node of the first motor or the intelligent tool holder when the processing state of the workpiece determined by the intelligent tool holder based on the rotation speed of the first motor is intelligent milling; The analysis module is further configured to determine a processing parameter for the workpiece based on the rotation speed of the second motor when the processing state of the workpiece by the intelligent tool holder determined based on the rotation speed of the first motor is milling.

2. The intelligent monitoring system for CNC machine tools according to claim 1 is characterized in that: The analysis module is provided with a plurality of clamping force adjustment modes for the clamping force of the intelligent tool holder on the tool based on the rotation speed of the first motor, and the clamping force of the intelligent tool holder on the tool after adjustment using each clamping force adjustment mode is different; The analysis module is provided with a plurality of adjustment modes for the operation time nodes of the fixture and the intelligent tool holder based on the difference between the rotation speed of the first motor and the preset first motor rotation speed standard, and the operation time nodes obtained under each adjustment mode are different.

3. The method of the intelligent monitoring system of a CNC machine tool according to any one of claims 1 to 2, characterized in that: The following steps are involved: Step S1, the first motor in the processing module drives the workpiece to rotate, the second motor in the processing module drives the intelligent tool holder to rotate, and the intelligent tool holder completes the cutting and grinding of the workpiece by using the corresponding tool head; Step S2, the detection module detects the vibration frequency of the tool head in the intelligent tool holder, the rotation speed of the first motor and the rotation speed of the second motor respectively during the machining process; Step S3, the analysis module determines whether the processing of the workpiece by the machine tool meets the standard based on the vibration frequency of the tool head measured by the detection module, and when it is determined that it does not meet the standard, determines the processing parameters for the workpiece according to the current processing procedure, or determines the operating parameters for the components in the processing module according to the rotation speed of the first motor, and outputs corresponding adjustment instructions according to the determined result; In step S4, the transmission module transmits the adjustment instruction output by the analysis module to the corresponding component so that the component receiving the adjustment instruction changes its processing parameters or operating parameters.

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