Key groove machining mechanism with double diamond milling cutters

Abstract

The invention provides a key groove machining mechanism provided with double diamond milling cutters, and belongs to the technical field of mechanical manufacturing, the key groove machining mechanism comprises a key position machining mechanism, the key position machining mechanism comprises a workbench, a clamping mechanism, a multi-axis movement device, a machining head and a machining control system, and the clamping mechanism and the multi-axis movement device are arranged on the workbench; a machining head is arranged at the output end of the multi-axis movement device, and the machining control system comprises a feedback adaptation adjustment module and a fault detection processing module. The distance between the fixed cutter handle and the movable cutter handle is flexibly adjusted through the transverse driving device, the requirements for the sizes and the shapes of different machined key grooves are flexibly met, the position of a cutter in the machining process is finely adjusted, and therefore the more accurate machining effect is achieved. Cutter abrasion and environment information are monitored and analyzed through the feedback adaptive adjustment module to obtain a compensation processing strategy set, self-adaptive compensation of machining parameters used by the cutter is achieved, the machining precision is corrected in time, the service life of the cutter is guaranteed, and the machining efficiency and the yield are improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, and in particular to a keyway processing mechanism provided with double diamond milling cutters. Background Art

[0002] In many industrial fields, keyway machining is a common production process used to manufacture various types of equipment and machines. The keyway machining mechanism usually consists of a machining head, a spindle, a worktable and a control system. The machining head is a cutting tool mounted on the spindle, which can be a drill, a milling cutter or other forms of cutting tools. The spindle provides rotational motion to drive the machining head to perform cutting or milling operations. The worktable is used to fix the workpiece to be machined and provide a corresponding movement method so that the machining head can move on the workpiece to realize the keyway machining operation. The control system is used to control the movement of the machining head, spindle and worktable.

[0003] During the machining process, the workpiece is usually clamped on the workbench, and the tool can be precisely controlled to move through the instructions of the control system. This control system usually has a multi-axis motion design that can control the movement of the tool in different directions to achieve the desired keyway shape on the workpiece surface.

[0004] Patent CN105414632A discloses a keyway processing mechanism with double milling cutters, which includes a processing tool holder and a workpiece fixture, the processing tool holder includes a box body and a motor, an active bevel gear connected to the motor is provided in the box body, the active bevel gear is connected to a pair of transition bevel gears and a driven bevel gear, an output shaft is mounted on the driven bevel gear, a milling cutter is provided on the output shaft, a lower cover is provided at the lower end of the box body, the output shaft is supported on the lower cover, the workpiece fixture includes a pair of fixture seats, the fixture seats are provided with trapezoidal grooves, a fixed pressure plate is provided between adjacent trapezoidal grooves, and the fixed pressure plate is connected to the adjacent trapezoidal grooves or V-shaped grooves by fixing bolts; although side-by-side milling cutters and a fixture capable of simultaneously installing two or more workpieces are realized, the motor can synchronize the two milling cutters to rotate, and with the cooperation of the fixture, keyways can be processed on two workpiece shafts at the same time.

[0005] According to the above description, there are still some shortcomings: the spacing between the side-by-side milling cutters is fixed, which cannot flexibly adapt to the keyway processing of different specifications. In addition, during long-term continuous processing, the cutter will lose its sharpness due to friction and wear. There may also be some abnormal situations, such as tool breakage, cutting force exceeding the threshold, etc. If it cannot be detected and processed in time, it will have a negative impact on the processing process and may even lead to a decrease in processing quality or damage to the equipment. Therefore, we propose a keyway processing mechanism with double diamond milling cutters to solve the above problems. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a keyway processing mechanism equipped with double diamond milling cutters to solve the problems raised in the above background technology.

[0007] The object of the present invention can be achieved through the following technical scheme: a keyway processing mechanism provided with a double diamond milling cutter, comprising a key position processing mechanism, the key position processing mechanism comprising a workbench, a clamping mechanism, a multi-axis motion device, a processing head and a processing control system, the workbench is provided with a clamping mechanism and a multi-axis motion device, the output end of the multi-axis motion device is provided with a processing head, a mounting cavity is provided in the processing head, the inner wall of the mounting cavity is fixedly connected to a shaft frame, the top of the shaft frame is rotatably connected to an extendable shaft, the surface of the extendable shaft is fixedly connected to a driven bevel gear, one side of the driven bevel gear is meshed with an active bevel gear, the mounting shaft of the active bevel gear is connected to a driving member at the end of the multi-axis motion device, and the extendable The two ends of the extension shaft are respectively fixedly connected with a transmission bevel gear 1 and a transmission bevel gear 2, one side of the transmission bevel gear 1 is meshed with a driving bevel gear 1, and the driving bevel gear 1 is fixedly connected to the surface of a fixed tool handle rotatably connected to the installation cavity, the inner wall of the installation cavity is provided with a movable groove, a movable seat is slidably connected in the movable groove, a movable tool handle is rotatably connected to the movable seat, and the surface of the movable tool handle is fixedly connected with a driving bevel gear 2 meshed with the transmission bevel gear 2, a transverse driving device for use with the movable seat is provided on the processing head, a connecting rod is fixedly connected to one side of the movable seat, and one end of the connecting rod is rotatably connected to the movable end of the extendable shaft; a diamond milling cutter is installed on both the fixed tool handle and the movable tool handle;

[0008] The machining control system includes a feedback adaptation adjustment module and a fault detection and processing module; the feedback adaptation adjustment module is used to obtain tool wear and environmental information during the machining process in real time through sensors, and the tool wear and environmental information includes tool feature information and tool status information; abnormal feature analysis is performed on the tool feature information to obtain a wear degree value; state change analysis is performed on the tool status information to obtain an abnormal state value; the wear degree value and the abnormal state value are then normalized to obtain a tool compensation value HE; the value range of the tool compensation processing strategy group is set, the node values ​​of the value range are marked as HEn and HEn+1, and the tool compensation value is matched with the value range of the tool compensation processing strategy group. When HE<HEn, a normal operation strategy is generated, when HEn≤HE<HEn+1, a parameter compensation strategy is generated, and when HEn+1≤HE, a tool over-damage strategy is generated; the normal operation strategy, parameter compensation strategy, and tool over-damage strategy are marked as a tool compensation processing strategy group; corresponding measures are executed according to the corresponding strategies in the tool compensation processing strategy group;

[0009] The fault detection and processing module is used to obtain the operation information of the key processing mechanism, perform fault analysis on the operation information, and obtain the operation abnormality value TY corresponding to the parameter in the operation information; arrange the operation abnormality values ​​corresponding to the parameters in the operation information in order of size to obtain an operation abnormality list; set the fault threshold of the operation abnormality value corresponding to the parameter, compare the operation abnormality value with its fault threshold, and if the operation abnormality value is greater than its fault threshold, generate a fault signaling corresponding to the parameter, and mark the fault signaling of all parameters as a parameter corresponding fault signaling group; perform comprehensive prediction processing on the operation abnormality values ​​of all parameters in the operation information to obtain a mechanism warning value; wherein the operation information includes the current, voltage, load, temperature, rotation speed of each motor on the multi-axis motion device and the cutting force, cutting speed, feed speed, and feed amount of the tool; set a warning measure level group for the mechanism warning value, match the mechanism warning value with the warning measure level group, and obtain the corresponding warning measure level to execute the warning measures of the corresponding warning measure level.

[0010] Preferably, the extendable shaft includes a shaft cylinder and a movable shaft, the inner wall of the shaft cylinder is provided with a slide groove 1, the surface of the movable shaft is provided with a slide groove 2, the inner wall of the shaft cylinder is fixedly connected with a guide block 2 which is slidably connected to the slide groove 2, the surface of the movable shaft is fixedly connected with a guide block 1 which is slidably connected to the slide groove 1, the surface of the shaft cylinder is fixedly connected to the driven bevel gear, and the surface of the movable shaft is rotatably connected to one end of the connecting rod.

[0011] As a preferred method, abnormal feature analysis is performed on the tool feature information to obtain the wear degree value; the specific analysis is as follows:

[0012] The set standard threshold corresponding to the parameter in the tool feature information is set, and the set standard threshold corresponding to any parameter in the tool feature information is subtracted from the parameter to obtain the parameter difference, and the parameter difference in the feature information is processed to obtain the wear degree value.

[0013] As a preferred method, the tool status information is analyzed for state changes to obtain abnormal state values; the specific analysis is as follows:

[0014] Set the corresponding normal range of the parameters in the tool status information, compare the value of any parameter in the tool status information with its corresponding normal range, and when the corresponding value of the parameter is not in the corresponding normal range, mark the corresponding value of the parameter as an abnormal parameter value, and mark the parameter as an abnormal parameter, and generate a parameter corresponding detection and analysis signal; the parameter corresponding detection and analysis signal is used to trigger the abnormal analysis of the corresponding parameter, and the moment of generating the parameter corresponding detection and analysis signal is marked as the original moment, and all moments within the set time before and after the original moment are respectively selected and marked as abnormal selection time zones, and the number of abnormal parameter values ​​in the abnormal selection time zone is extracted to obtain the outlier value, and all moments in the abnormal selection time zone are The abnormal parameter values ​​are averaged to obtain the abnormal mean value, and a line graph of abnormal parameter changes is constructed. The corresponding values ​​of the parameters at any time in the abnormal selection time zone are substituted into the abnormal parameter change line graph, and the positions of the corresponding values ​​of the parameters in the line graph are marked as parameter points. The adjacent parameter points are connected to obtain the parameter line, and the slope of the parameter line is calculated. The positive slope is marked as an ascending value, and the negative slope is marked as a descending value. All the ascending values ​​and descending values ​​in the abnormal selection time zone are summed up to obtain the total ascending value and the total descending value, and the total ascending value and the total descending value are weighted to obtain the parameter wave value. The abnormal values, abnormal means, and parameter wave values ​​of all abnormal parameters are processed to obtain the abnormal state value.

[0015] Preferably, the processing control system further comprises a communication module, which is used to establish a communication connection with an intelligent terminal, and to send and display the compensation processing strategy group, parameter corresponding fault signaling group and early warning measure level group, and operation abnormality list to the intelligent terminal.

[0016] Preferably, corresponding measures are executed according to corresponding strategies in the tool compensation processing strategy group; the specific measures are:

[0017] When executing the normal operation strategy, no special processing operations are required;

[0018] When executing the parameter compensation strategy, extract the parameter difference of any parameter in the tool feature information, set the compensation correction selection time zone, calculate the mean of the parameter difference corresponding to the parameter in the compensation correction selection time zone to obtain the corrected mean value, calculate the parameter difference corresponding to the parameter in the compensation correction selection time zone using the variance formula to obtain the corrected fluctuation value, perform weighted calculation on the parameter difference, the corrected mean value, and the corrected fluctuation value to obtain the compensation adjustment value corresponding to the parameter; use the compensation adjustment value corresponding to the parameter to adjust the processing parameter to correct or adjust the deviation caused by the tool;

[0019] When the tool damage strategy is executed, the key position processing mechanism is controlled to stop operating.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can monitor tool wear and environmental information through the feedback adaptation adjustment module and analyze to obtain a compensation processing strategy group, thereby realizing adaptive compensation of processing parameters used by the tool, timely correcting the processing accuracy, ensuring the service life of the tool, and improving processing efficiency and yield rate.

[0022] 2. The present invention performs fault analysis and predictive processing on the operation information of the key processing mechanism through the fault detection and processing module, which can realize timely monitoring and detection of abnormal operation of the mechanism, so as to take early warning measures in advance, reduce production downtime caused by mechanism failure, and improve production efficiency and capacity.

[0023] 3. The present invention flexibly adjusts the distance between the fixed tool handle and the movable tool handle through a transverse driving device, flexibly adapts to the size and shape requirements of different processing keyways, and fine-tunes the tool position during the processing, thereby achieving a more precise processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0025] Figure 1 The invention is a structural schematic diagram of a keyway processing mechanism provided with double diamond milling cutters.

[0026] Figure 2 The present invention is a structural diagram of a processing head of a keyway processing mechanism provided with double diamond milling cutters.

[0027] Figure 3 It is an enlarged view of a processing head of a keyway processing mechanism provided with double diamond milling cutters according to the present invention.

[0028] Figure 4 It is an enlarged view of an extendable shaft of a keyway processing mechanism provided with double diamond milling cutters according to the present invention.

[0029] Figure 5 The invention discloses a principle block diagram of a keyway processing mechanism provided with double diamond milling cutters.

[0030] In the figure: 1. workbench; 2. clamping mechanism; 3. multi-axis motion device; 4. processing head; 5. lateral drive device; 6. fixed tool handle; 7. movable tool handle; 8. shaft frame; 9. extendable shaft; 10. transmission bevel gear 1; 11. driving bevel gear 1; 12. transmission bevel gear 2; 13. driving bevel gear 2; 14. driven bevel gear; 15. active bevel gear; 16. movable groove; 17. movable seat; 18. connecting rod; 19. through hole. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0032] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0033] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0034] See also Figure 1 - Figure 5As shown, a keyway processing mechanism provided with a double diamond milling cutter includes a key position processing mechanism, the key position processing mechanism includes a workbench 1, a clamping mechanism 2, a multi-axis motion device 3, a processing head 4 and a processing control system, the workbench 1 is provided with a clamping mechanism 2 and a multi-axis motion device 3, the output end of the multi-axis motion device 3 is provided with a processing head 4, a mounting cavity is provided in the processing head 4, the inner wall of the mounting cavity is fixedly connected with a shaft frame 8, the top of the shaft frame 8 is rotatably connected with an extendable shaft 9, the surface of the extendable shaft 9 is fixedly connected with a driven bevel gear 14, one side of the driven bevel gear 14 is meshed with an active bevel gear 15, the mounting shaft of the active bevel gear 15 is connected to the driving member at the end of the multi-axis motion device 3, and the two ends of the extendable shaft 9 are respectively fixedly connected with transmission bevel gears 10, a transmission bevel gear 12, one side of the transmission bevel gear 10 is meshed with a driving bevel gear 11, the driving bevel gear 11 is fixedly connected to the surface of the fixed tool handle 6 rotatably connected to the installation cavity, the inner wall of the installation cavity is provided with a movable groove 16, a movable seat 17 is slidably connected in the movable groove 16, the movable seat 17 is rotatably connected with the movable tool handle 7, the surface of the movable tool handle 7 is fixedly connected with a driving bevel gear 13 meshing with the transmission bevel gear 12, a transverse driving device 5 used in conjunction with the movable seat 17 is provided on the processing head 4, a connecting rod 18 is fixedly connected to one side of the movable seat 17, one end of the connecting rod 18 is rotatably connected to the movable end of the extendable shaft 9, and a through hole 19 used in conjunction with the movable tool handle 7 is provided at the bottom of the processing head 4;

[0035] The processing control system includes a feedback adaptation adjustment module and a fault detection and processing module; the feedback adaptation adjustment module is used to obtain tool wear and environmental information during the processing process in real time through sensors. The tool wear and environmental information include tool feature information and tool status information. It should be noted that the visual detection system is used to collect image information of the tool surface in real time, and the tool feature information is extracted from the image information through an image processing algorithm. The environmental detection system is used to collect the cutting force, vibration and sound signals of the tool in real time through force, vibration and sound sensors and use signal processing technology, and combine the temperature sensor to collect the temperature of the tool surface, thereby obtaining the tool status information. The tool status information includes cutting force, vibration frequency, decibel and temperature, wherein the signal processing technology includes but is not limited to analog-to-digital conversion technology, fast Fourier transform technology, wavelet transform, etc.; abnormal feature analysis is performed on the tool feature information to obtain a wear degree value; state change analysis is performed on the tool status information to obtain an abnormal state value; and the wear degree value and abnormal state value are then combined. Normalization is performed, and the specific process is as follows: the normalized values ​​of the wear degree value and the abnormal state value are input into the computer, and converted into length according to a certain ratio, a semicircle is drawn with the length corresponding to the wear degree value as the radius, the center of the semicircle is selected, and the center of the semicircle is used as the starting point to make a height perpendicular to the semicircle and equal to the length of the abnormal state value, and a semi-vertebra is constructed with the semicircle and the height, and the volume of the semi-vertebra is extracted, and the value of the corresponding volume of the vertebra is marked as the tool compensation value HE; the value range of the tool compensation processing strategy group is set, and the node values ​​of the value range are marked as HEn and HEn+1, and the tool compensation value is matched with the value range of the tool compensation processing strategy group. When HE<HEn, a normal operation strategy is generated, when HEn≤HE<HEn+1, a parameter compensation strategy is generated, and when HEn+1≤HE, a tool damage strategy is generated; the normal operation strategy, parameter compensation strategy, and tool damage strategy are marked as a tool compensation processing strategy group; corresponding measures are executed according to the corresponding strategies in the tool compensation processing strategy group; the specific measures are as follows:

[0036] When executing the normal operation strategy, no special processing operations are required;

[0037] When executing the parameter compensation strategy, extract the parameter difference HYi of any parameter in the tool feature information, set the compensation correction selection time zone, calculate the mean of the parameter difference corresponding to the parameter in the compensation correction selection time zone to obtain the corrected mean expressed as iXZ1, calculate the parameter difference corresponding to the parameter in the compensation correction selection time zone using the variance formula to obtain the corrected fluctuation value iXZ2, perform weighted calculation on the parameter difference, the corrected mean, and the corrected fluctuation value, and use the formula iXZ=HYi×ir3+iXZ1×ir1+iXZ2×ir2 to obtain the compensation adjustment value iXZ corresponding to the parameter; wherein ir1, ir2, and ir3 represent the weight factors corresponding to the corrected mean, the corrected fluctuation value, and the parameter difference, respectively, and the size of the weight factor is customized according to the use, such as the value can be 0.3, 0.4, and 0.2; the larger the parameter difference, the larger the corrected mean, and the larger the corrected fluctuation value, the larger the compensation adjustment value of the corresponding parameter, which means that the corresponding parameter needs to be compensated for. The larger the processing parameter; the compensation adjustment value corresponding to the parameter is used to adjust the processing parameter to correct or adjust the deviation caused by the tool;

[0038] When executing the tool wear strategy, the key processing mechanism is controlled to stop operating; it should be noted that when generating the normal operation strategy, it means that the tool wear is small, the cutting edge is clearer and smoother, and the tool mark is finer and clearer, indicating that the size and shape of the cutting edge, the depth and shape of the tool mark are consistent with the corresponding design of the tool. When generating the parameter compensation strategy, it means that the tool wear degree or the size of the cutting edge or the size of the tool mark have exceeded the normal range. When generating the tool wear strategy, it means that the tool has been excessively worn or the size of the cutting edge and the tool mark is too different from the normal size.

[0039] The fault detection and processing module is used to obtain the operation information of the key processing mechanism, which includes the current, voltage, load, temperature, rotation speed of each motor on the multi-axis motion device and the cutting force, cutting speed, feed speed and feed amount of the tool; the fault analysis of the operation information is performed to obtain the operation abnormality value TY corresponding to the parameters in the operation information, specifically: each parameter is set to correspond to a normal range, such as the current corresponds to a current normal range; the parameter is compared with the normal range, if the parameter does not belong to the corresponding normal range, the parameter is judged to be compared with the maximum or minimum value of the normal range, if the parameter is less than the minimum value, the difference between the parameter and the minimum value is calculated to obtain the corresponding operation abnormality value; if the parameter is greater than the maximum value, the difference between the parameter and the maximum value is calculated to obtain the corresponding operation abnormality value; such as the parameter current, voltage, The load, temperature, rotation speed and the cutting force, cutting speed, feed speed and feed amount of the tool are compared with the corresponding normal range. If they are not within the normal range, the current, voltage, load, temperature, rotation speed and the cutting force, cutting speed, feed speed and feed amount of the tool are calculated with the maximum or minimum value of the corresponding normal range to obtain the corresponding operation abnormality value; the operation abnormality values ​​corresponding to the parameters in the operation information are arranged in order of size to obtain an operation abnormality list; the fault threshold of the operation abnormality value corresponding to the parameter is set, and the operation abnormality value is compared with its fault threshold. If the operation abnormality value is greater than its fault threshold, the fault signaling corresponding to the parameter is generated, and the fault signaling of all parameters is marked as the fault signaling group corresponding to the parameter; the operation abnormality values ​​of all parameters in the operation information are comprehensively predicted and processed, and the formula is used to calculate the fault signaling of all parameters in the operation information. The mechanism warning value TU is obtained; wherein, jTY and jζ respectively represent the operation abnormality value corresponding to the parameter j in the operation information and its corresponding weight, j represents the number of the parameter in the operation information, j=1, 2, ..., J1, J1 represents the total number of parameter numbers in the operation information; the larger the operation abnormality value of the corresponding parameter in the operation information, the larger the mechanism warning value, indicating that the level of the warning measure is larger and the probability of abnormality of the keyway processing mechanism is greater; the warning measure level group of the mechanism warning value is set, the mechanism warning value is matched with the warning measure level group, and the corresponding warning measure level is obtained to execute the warning measures of the corresponding warning measure level; it should be noted that when generating the warning measure level group, the warning measure level group includes low-level warning, medium-level warning and high-level warning; in the case of low-level warning, a set number of yellow warning lights flash according to the priority corresponding to the warning level; in the case of medium-level warning, a set number of red warning lights flash according to the priority corresponding to the warning level, and the sound alarm is controlled to emit an alarm sound of a set volume according to the priority corresponding to the warning level; in the case of high-level warning, the keyway processing mechanism is controlled to stop, and the measures corresponding to the medium-level warning are executed at the same time.

[0040] In the present application, the specific process of controlling the sound alarm to emit an alarm sound of a set volume is as follows: obtain the staff in the area corresponding to the sound alarm, select the first three staff members closest to the sound alarm, and mark them as target personnel, connect the positions of all target personnel with the position of the sound alarm to obtain the corresponding device line, count the objects on the device line and their corresponding thickness on the connection line, count the thickness values ​​of all objects on the device line and sum them up and mark them as the total thickness value; count the lengths of all device lines and take the average to obtain the device mean; obtain the angle formed by all device lines and extract the value of the angle and mark it as the angle value;

[0041] Input the total thickness value, angle value and device mean value into a computer program, convert them into length values ​​according to a certain ratio, construct two circles with the lengths corresponding to the total thickness value and angle value as the radius, place the centers of the two circles on the same vertical line, and the vertical distance between the two circles is equal to the length corresponding to the device mean value; then connect the edges of the two circles to form a frustum; extract the volume of the frustum and mark the volume value as the distance value;

[0042] Set a number of distance sound ranges, each distance sound range corresponds to a sound level; match the distance sound value with a number of distance sound ranges, when the distance sound value belongs to the distance sound range, match the sound level corresponding to the distance sound range, and then control the sound alarm to emit an alarm sound of the sound level.

[0043] The corresponding sound volume is obtained by analyzing the position of the personnel, and then the sound alarm is controlled to sound an alarm to avoid the situation where the sound is too loud or too soft when the personnel are close or far away. This will cause the alarm sound to be harsh when the personnel are close, and too low when the personnel are far away. The personnel will not be able to hear the alarm sound in time, resulting in a low level of alarm intelligence.

[0044] In the present application, the extendable shaft 9 includes a shaft cylinder 91 and a movable shaft 92. The inner wall of the shaft cylinder 91 is provided with a slide groove 93, and the surface of the movable shaft 92 is provided with a slide groove 94. The inner wall of the shaft cylinder 91 is fixedly connected with a guide block 96 that is slidably connected to the slide groove 94, and the surface of the movable shaft 92 is fixedly connected with a guide block 95 that is slidably connected to the slide groove 93. The surface of the shaft cylinder 91 is fixedly connected to the driven bevel gear 14, and the surface of the movable shaft 92 is rotatably connected to one end of the connecting rod 18.

[0045] In this application, the tool feature information is analyzed for abnormal features to obtain the wear degree value; the specific analysis is as follows:

[0046] Set the setting standard threshold corresponding to the parameter in the tool feature information, and subtract the setting standard threshold corresponding to any parameter in the tool feature information from the parameter to obtain the parameter difference, which is expressed as HYi, where i represents the number of the corresponding parameter in the tool feature information, i=1, 2, ... J2, J2 represents the total number of the corresponding parameter numbers in the tool feature information, and process the parameter difference in the feature information, using the formula The wear degree value HE1 is obtained; wherein, iδ represents the weight corresponding to the parameter i in the tool feature information, and B represents the preset normal feature correction constant. The larger the parameter difference in the feature information, the larger the corresponding wear degree value, indicating that the probability of tool problems is greater. The tool feature information includes the size, size, height, area, depth of the cutting edge on the workpiece and the length, depth, width, spacing, angle of the tool mark, as well as the tool tip size, blade size, tool handle size and the smoothness and roughness of the tool surface; it should be noted that the tool tip size includes the tool tip radius, tool tip chamfer radius, and tool tip inclination angle; the blade size includes blade length, blade thickness, and back angle; the tool handle size includes tool root diameter and tool handle length; the normal feature correction constant is composed of relevant factors such as the coating material, coating thickness, and tool material on the tool surface.

[0047] In this application, the state change analysis of the tool state information is performed to obtain the abnormal state value; the specific analysis is:

[0048] The corresponding normal range of the parameters in the tool status information is set, and the value of any parameter in the tool status information is compared with its corresponding normal range. When the corresponding value of the parameter is not in the corresponding normal range, the corresponding value of the parameter is marked as an abnormal parameter value, and the parameter is marked as an abnormal parameter, and a parameter corresponding detection and analysis signal is generated; the parameter corresponding detection and analysis signal is used to trigger the abnormal analysis of the corresponding parameter, and the moment of generating the parameter corresponding detection and analysis signal is marked as the original moment, and all moments within the set time before and after the original moment are respectively selected and marked as abnormal selection time zones, and the number of abnormal parameter values ​​in the abnormal selection time zone is extracted to obtain an abnormal value represented as HC1, and the average of all abnormal parameter values ​​in the abnormal selection time zone is calculated to obtain an abnormal mean represented as HC2, and a construction is made. Abnormal parameter change line chart, substitute the corresponding parameter value at any time in the abnormal selected time zone into the abnormal parameter change line chart, mark the position of the corresponding parameter value in the line chart as the parameter point, connect the adjacent parameter points to get the parameter line, calculate the slope of the parameter line, mark the positive slope as the rising value, and mark the negative slope as the falling value, sum up all the rising values ​​and falling values ​​in the abnormal selected time zone to get the total rising value SC1 and the total falling value XJ2, perform weighted calculation on the total rising value and the total falling value to get the parameter wave value representation HC3, for example, the weighted calculation is: HC3 = SC1 × 0.6 + XJ2 × 0.2; number all abnormal parameters as t, process the abnormal values, abnormal means, and parameter wave values ​​of all abnormal parameters, and use the formula The abnormal state value HE2 is obtained; wherein, tHC1, tHC2, tHC3, tf1, tf2, and tf3 respectively represent the abnormal value, abnormal mean value, and parameter wave value of the abnormal parameter t and their corresponding weights, and the weight is a custom setting, t=1, 2..., J3; J3 represents the total number of abnormal parameters; the larger the abnormal value, the larger the abnormal mean value, and the larger the parameter wave value of the abnormal parameter, the larger the corresponding abnormal state value, indicating that the probability that the tool is abnormal due to the tool state information is greater.

[0049] In the present application, the processing control system also includes a communication module, which is used to communicate with the intelligent terminal, send the compensation processing strategy group, the parameter corresponding fault signaling group and the early warning measure level group, and the operation abnormality list to the intelligent terminal and display them; it should be noted that after receiving the compensation processing strategy group or the early warning measure level group, the intelligent terminal can display it through text, icons, line graphs or bar graphs, as well as alarm sounds or vibration prompts, and the relevant operation and maintenance team executes corresponding processing measures after receiving the compensation processing strategy group, the parameter corresponding fault signaling group or the early warning measure level group through the intelligent terminal; the relevant operation and maintenance team can maintain the corresponding parameter corresponding components of the keyway processing mechanism in turn through the operation abnormality list or the parameter corresponding fault signaling group.

[0050] When the present invention is specifically implemented:

[0051] When the keyway processing mechanism of the present invention is in operation, the driving member at the end of the multi-axis motion device 3 drives the active bevel gear 15 to rotate, so that the driven bevel gear 14 meshing with the active bevel gear 15 drives the transmission bevel gear 10 and the transmission bevel gear 2 12 at both ends of the extendable shaft 9 to respectively drive the driving bevel gear 11 and the driving bevel gear 2 13 to rotate, so that the fixed tool handle and the movable tool handle rotate synchronously, and the keyway on the workpiece is processed, thereby improving the processing efficiency; when keyways of different specifications need to be processed, the movable seat 17 can be driven by the lateral moving device 5 to drive the movable tool handle 7 to move, and the extendable shaft 9 can be extended by the connecting rod 18, so that the transmission bevel gear 2 12 and the driving bevel gear 2 13 remain in a meshing state, thereby realizing flexible adjustment of the spacing between the fixed tool handle 6 and the movable tool handle 7, flexibly adapting to the size and shape requirements of different keyways, and fine-tuning the tool position during the processing, so as to achieve a more accurate processing effect.

[0052] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0053] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A keyway processing mechanism equipped with a double diamond milling cutter, comprising a key processing mechanism, the key processing mechanism comprising a workbench (1), a clamping mechanism (2), a multi-axis motion device (3), a processing head (4) and a processing control system, the workbench (1) is provided with a clamping mechanism (2) and a multi-axis motion device (3), the output end of the multi-axis motion device (3) is provided with a processing head (4), characterized in that: The processing head (4) is provided with an installation cavity, the inner wall of the installation cavity is fixedly connected to an axis frame (8), the top of the axis frame (8) is rotatably connected to an extendable shaft (9), the surface of the extendable shaft (9) is fixedly connected to a driven bevel gear (14), one side of the driven bevel gear (14) is meshed with an active bevel gear (15), the installation axis of the active bevel gear (15) is connected to a driving member at the end of the multi-axis motion device (3), the two ends of the extendable shaft (9) are respectively fixedly connected to a transmission bevel gear 1 (10) and a transmission bevel gear 2 (12), one side of the transmission bevel gear 1 (10) is meshed with a driving bevel gear 1 (11), the driving bevel gear One (11) is fixedly connected to the surface of a fixed tool handle (6) rotatably connected to the installation cavity, the inner wall of the installation cavity is provided with a movable groove (16), a movable seat (17) is slidably connected in the movable groove (16), a movable tool handle (7) is rotatably connected to the movable seat (17), a driving bevel gear (13) meshing with a transmission bevel gear (12) is fixedly connected to the surface of the movable tool handle (7), a transverse driving device (5) used in conjunction with the movable seat (17) is provided on the processing head (4), and a connecting rod (18) is fixedly connected to one side of the movable seat (17); diamond milling cutters are installed on both the fixed tool handle (6) and the movable tool handle (7); The processing control system includes a feedback adaptation adjustment module and a fault detection and processing module; the feedback adaptation adjustment module is used to obtain tool wear and environmental information in the processing process in real time through sensors, perform abnormal feature analysis on tool feature information to obtain a wear degree value; perform state change analysis on tool state information to obtain an abnormal state value; and then process the wear degree value and the abnormal state value to obtain a tool compensation value HE; Set the value range of the tool compensation processing strategy group, mark the node values ​​of the value range as HEn and HEn+1, match the tool compensation value with the value range of the tool compensation processing strategy group, and when HE<HEn, generate a normal operation strategy, when HEn≤HE<HEn+1, generate a parameter compensation strategy, and when HEn+1≤HE, generate a tool damage strategy; Mark the normal operation strategy, parameter compensation strategy, and tool damage strategy as a tool compensation processing strategy group; execute corresponding measures according to the corresponding strategy in the tool compensation processing strategy group; The fault detection and processing module is used to obtain the operation information of the key processing mechanism, perform fault analysis on the operation information, and obtain the operation abnormality value corresponding to the parameter in the operation information; Arrange the operation abnormality values ​​corresponding to the parameters in the operation information in order of magnitude to obtain an operation abnormality list; Set the fault threshold of the operation abnormal value corresponding to the parameter, compare the operation abnormal value with its fault threshold, and if the operation abnormal value is greater than its fault threshold, generate the fault signaling corresponding to the parameter, and mark the fault signaling of all parameters as a fault signaling group corresponding to the parameter; Comprehensively predict and process the abnormal operation values ​​of all parameters in the operation information to obtain the institutional warning value; set the warning measure level group of the institutional warning value, match the institutional warning value with the warning measure level group, obtain the corresponding warning measure level, and execute the warning measures of the corresponding warning measure level.

2. A keyway processing mechanism with double diamond milling cutters according to claim 1, characterized in that: One end of the connecting rod (18) is rotatably connected to the movable end of the extendable shaft (9); the extendable shaft (9) comprises a shaft cylinder (91) and a movable shaft (92); the inner wall of the shaft cylinder (91) is provided with a first slide groove (93); the surface of the movable shaft (92) is provided with a second slide groove (94); the inner wall of the shaft cylinder (91) is fixedly connected with a second guide block (96) slidably connected to the second slide groove (94); the surface of the movable shaft (92) is fixedly connected with a first guide block (95) slidably connected to the first slide groove (93); the surface of the shaft cylinder (91) is fixedly connected to the driven bevel gear (14); the surface of the movable shaft (92) is rotatably connected to one end of the connecting rod (18).

3. A keyway processing mechanism with double diamond milling cutters according to claim 1, characterized in that: The tool wear and environment information includes tool feature information and tool status information; the operation information includes the current, voltage, load, temperature, rotation speed of each motor on the multi-axis motion device and the cutting force, cutting speed, feed speed and feed amount of the tool.

4. A keyway machining mechanism with double diamond milling cutters according to claim 3, characterized in that: The specific analysis process of abnormal feature analysis of tool feature information to obtain the wear degree value is as follows: The set standard threshold corresponding to the parameter in the tool feature information is set, and the set standard threshold corresponding to any parameter in the tool feature information is subtracted from the parameter to obtain the parameter difference, and the parameter difference in the feature information is processed to obtain the wear degree value.

5. A keyway processing mechanism with double diamond milling cutters according to claim 3, characterized in that: The specific analysis process of analyzing the state change of the tool state information to obtain the abnormal state value is as follows: Set the corresponding normal range of the parameters in the tool status information, compare the value of any parameter in the tool status information with its corresponding normal range, and when the corresponding value of the parameter is not in the corresponding normal range, mark the corresponding value of the parameter as an abnormal parameter value, and mark the parameter as an abnormal parameter, and generate a parameter corresponding detection and analysis signal; the parameter corresponding detection and analysis signal is used to trigger the abnormal analysis of the corresponding parameter, and the moment of generating the parameter corresponding detection and analysis signal is marked as the original moment, and all moments within the set time before and after the original moment are respectively selected and marked as abnormal selection time zones, and the number of abnormal parameter values ​​in the abnormal selection time zone is extracted to obtain the outlier value, and all moments in the abnormal selection time zone are The abnormal parameter values ​​are averaged to obtain the abnormal mean value, and a line graph of abnormal parameter changes is constructed. The corresponding values ​​of the parameters at any time in the abnormal selection time zone are substituted into the abnormal parameter change line graph, and the positions of the corresponding values ​​of the parameters in the line graph are marked as parameter points. The adjacent parameter points are connected to obtain the parameter line, and the slope of the parameter line is calculated. The positive slope is marked as an ascending value, and the negative slope is marked as a descending value. All the ascending values ​​and descending values ​​in the abnormal selection time zone are summed up to obtain the total ascending value and the total descending value, and the total ascending value and the total descending value are weighted to obtain the parameter wave value. The abnormal values, abnormal means, and parameter wave values ​​of all abnormal parameters are processed to obtain the abnormal state value.

6. A keyway machining mechanism with double diamond milling cutters according to claim 1, characterized in that: The processing control system also includes a communication module, which is used to communicate with the intelligent terminal, send the compensation processing strategy group, the parameter corresponding fault signaling group and the early warning measure level group, and the operation abnormality list to the intelligent terminal for display.

7. A keyway machining mechanism with double diamond milling cutters according to claim 1, characterized in that: The specific measures for executing corresponding measures according to the corresponding strategies in the tool compensation processing strategy group are: When executing the parameter compensation strategy, extract the parameter difference of any parameter in the tool feature information, set the compensation correction selection time zone, calculate the mean of the parameter difference corresponding to the parameter in the compensation correction selection time zone to obtain the corrected mean value, calculate the parameter difference corresponding to the parameter in the compensation correction selection time zone using the variance formula to obtain the corrected fluctuation value, perform weighted calculation on the parameter difference, the corrected mean value, and the corrected fluctuation value to obtain the compensation adjustment value corresponding to the parameter; use the compensation adjustment value corresponding to the parameter to adjust the machining parameter to correct or adjust the deviation caused by the tool; When the tool damage strategy is executed, the key position processing mechanism is controlled to stop operating.

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