Automatic control system for processing inner surface of scissor handshake

Abstract

The application discloses a kind of automatic control system of scissor handshake inner surface processing, it is related to scissor handshake processing technical field, solve the technical problem in prior art, cannot be analyzed when different processing procedure type cooperation runs, cannot reduce the difficulty of execution of processing procedure to the greatest extent, specifically, tool walking monitoring unit, tool walking monitoring is carried out to scissor handshake inner surface processing process, in scissor handshake inner surface processing stage, according to data analysis inference tool walking monitoring result;Tool execution monitoring unit, tool walking track is monitored, when current processing position carries out tool walking, whether execution monitoring is qualified according to information comparison inference;Path analysis planning unit, processing procedure analysis is carried out to inner surface processing process, according to parameter analysis carries out path analysis planning;Processing precision detection unit, real-time precision detection is carried out to inner surface processing.

Description

Technical Field

[0001] This invention relates to the field of scissor handle processing technology, specifically an automatic control system for processing the inner surface of scissor handles. Background Technology

[0002] "Scissors handle" usually refers to the opening and closing linkage structure of the handle (handle part) in the structure of scissors, after the two blades are connected by a pivot pin. This structure is the core of scissors to realize the cutting function, and its design and processing precision directly affect the feel, durability and cutting effect of the scissors. The automatic control system for the inner surface of the scissors handle is the core technology for realizing precision machining. By integrating sensors, CNC technology, robot actuators and intelligent algorithms, the processing accuracy, efficiency and stability can be significantly improved.

[0003] However, in the existing technology, the tool movement cannot be monitored or the tool movement trajectory can be detected during the machining of the inner surface of the scissor handle. This makes it impossible to ensure that the tool is in the optimal operating state, which reduces machining efficiency and increases the risk of tool wear. In addition, it is impossible to analyze the operation of different machining processes in combination, and it is impossible to minimize the execution difficulty of the machining process.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned above by providing an automatic control system for machining the inner surface of scissor handles.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] An automatic control system for machining the inner surface of a scissor handle includes an automatic control platform, wherein the automatic control platform is communicatively connected to a tool travel monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a machining accuracy detection unit.

[0008] The tool travel monitoring unit monitors the tool travel during the machining process of the inner surface of the scissor handle. During the machining stage of the inner surface of the scissor handle, it collects real-time machining impact data and potential machining risks data, and infers the tool travel monitoring results based on data analysis.

[0009] The tool execution monitoring unit monitors the tool travel trajectory. When the tool travels at the current machining position, it collects execution compensation information and deformation influence information, and infers whether the execution monitoring is qualified based on the information comparison.

[0010] The path analysis and planning unit performs a machining process analysis on the inner surface machining process, dividing the inner surface machining process into spiral cutting and cycloidal cutting, collecting the influence parameters of spiral machining and cycloidal machining, and performing path analysis and planning based on the parameter analysis.

[0011] The machining accuracy detection unit performs real-time accuracy detection on the internal surface machining.

[0012] In a preferred embodiment of the present invention, the real-time machining impact data and the data on potential machining hazards are respectively the numerical ratio of the amount of machining debris accumulation to the amount of debris removal at each machining position, and the overlapping area between the accumulation position of the debris removal amount and the current tool trajectory position is obtained.

[0013] In a preferred embodiment of the present invention, if the real-time machining impact data exceeds the chip quantity ratio threshold, or the data of potential machining hazards exceeds the overlap area threshold, a tool travel control signal is generated and sent to the automatic control platform; if the real-time machining impact data does not exceed the chip quantity ratio threshold, and the data of potential machining hazards does not exceed the overlap area threshold, a tool travel normal signal is generated and sent to the automatic control platform.

[0014] In a preferred embodiment of the present invention, the compensation information and deformation influence information are respectively the trajectory spacing that needs to be compensated when the tool cutting force is cutting the material at the current position and the tool follows the preset travel trajectory, and the real-time deformation of the cutting edge of the tool during the execution phase of the tool travel trajectory.

[0015] In a preferred embodiment of the present invention, if the compensation information exceeds the trajectory spacing threshold, or the deformation influence information exceeds the cutting edge deformation threshold, a tool abnormality signal is generated and sent to the automatic control platform; if the compensation information does not exceed the trajectory spacing threshold, and the deformation influence information does not exceed the cutting edge deformation threshold, a tool normal signal is generated and sent to the automatic control platform.

[0016] As a preferred embodiment of the present invention, helical cutting means that the tool performs helical cutting with any point of the machining position as the center, and cycloidal cutting means that the tool performs transverse and longitudinal cutting with any edge of the machining position as the standard; when different types of processes are combined in the inner surface machining stage, the preset helical opening and the actual helical opening at the execution position of the helical cutting process are obtained, wherein the helical opening means the maximum hole diameter on the workpiece surface before the helical cutting process is executed.

[0017] If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation machining; conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation machining.

[0018] In a preferred embodiment of the present invention, the helical machining influence parameters and the cycloidal machining influence parameters are respectively the surface defect area of ​​the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation machining, and the horizontal deviation of the corresponding adjacent helical cutting process execution position before and after the cycloidal cutting process is executed.

[0019] In a preferred embodiment of the present invention, if the influencing parameter of spiral machining exceeds the shape defect area threshold, or the influencing parameter of cycloidal machining exceeds the level deviation threshold, a process influence signal is generated and sent to the automatic control platform; if the influencing parameter of spiral machining does not exceed the shape defect area threshold, and the influencing parameter of cycloidal machining does not exceed the level deviation threshold, a process normal signal is generated and sent to the automatic control platform; after receiving the signal, the automatic control platform performs the processing in accordance with the current process sequence.

[0020] In a preferred embodiment of the present invention, the process of the machining accuracy detection unit is as follows:

[0021] After cutting compensation is performed at each position of the tool travel trajectory during the internal surface machining process, the frequency of assembly deviation at the machining position is obtained. At the same time, the frequency of continuous occurrence of the cutting dimension deviation position when the assembly deviation occurs is also obtained, and these are compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold, respectively.

[0022] If the frequency of assembly deviation at the machining position exceeds the deviation frequency threshold, or the frequency of consecutive occurrence of cutting dimension deviation exceeds the consecutive occurrence frequency threshold, a compensation deviation signal is generated and sent to the automatic control platform; if the frequency of assembly deviation at the machining position does not exceed the deviation frequency threshold, and the frequency of consecutive occurrence of cutting dimension deviation does not exceed the consecutive occurrence frequency threshold, a normal accuracy signal is generated and sent to the automatic control platform.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In this invention, the presence of any impact on the current inner surface machining is inferred based on tool travel monitoring. This includes assessing whether the impact of wood chips and other residues generated during the tool travel process increases with the travel time, thereby improving the accuracy of tool machining detection. This prevents tool travel from causing a decrease in inner surface machining efficiency and negatively affecting the tool machining environment, which in turn adversely affects tool wear and the quality of the machined surface. Furthermore, the invention uses monitoring and analysis of the tool travel trajectory to determine whether the real-time tool usage status is normal during the current inner surface machining process. This avoids situations where the cutting force is incompatible with the material of the current machining surface, causing tool overload and preventing the actual inner surface machining from being completed, which would also increase the risk of tool damage.

[0025] 2. In this invention, the machining process of the inner surface is analyzed, and targeted analysis is performed according to different machining process types to plan the cutting path, ensuring that there are no deviations in the machining process, so that the workpiece changes caused by the cutting process will affect the execution of adjacent processes; the path analysis and planning improve the machining efficiency of the inner surface while reducing the impact of machining, and minimizes the execution difficulty of the machining process; the inner surface machining is subjected to real-time accuracy detection, and the accuracy is adjusted according to the accuracy detection results, which facilitates timely adjustment of the tool execution trajectory, improves the machining efficiency of the inner surface, and avoids continuous cutting deviations. Attached Figure Description

[0026] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a system principle block diagram of the present invention;

[0028] Figure 2 This is a flowchart of the method of the system of the present invention. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] Please see Figure 1 As shown, an automatic control system for machining the inner surface of a scissor handle includes an automatic control platform, wherein the automatic control platform is communicatively connected to a tool travel monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a machining accuracy detection unit; it should be explained that... Figure 2 This is a flowchart of the control method for an automatic control system; through Figure 1 and Figure 2 Further disclosure of the automatic control system;

[0032] The tool travel monitoring unit is used to monitor the tool travel during the machining process of the inner surface of the scissor handle. Based on the tool travel monitoring, it infers whether there is any impact on the current inner surface machining, and whether the wood chips and other residues generated during the tool travel process will have an increasing impact on the tool travel time. This improves the detection accuracy of tool machining, avoids the decrease in inner surface machining efficiency caused by tool travel, and avoids the impact on the tool machining environment, which will have an adverse effect on tool wear and machining surface quality.

[0033] During the inner surface machining stage of the scissor handle, the ratio of accumulated machining debris to removed debris at each machining location is obtained. Simultaneously, the overlap area between the debris removal location and the current tool trajectory location is also obtained. These ratios are labeled as real-time machining impact data and potential machining risks data, respectively, and compared with the debris amount ratio threshold and overlap area threshold.

[0034] If the ratio of the amount of accumulated chips to the amount of chips removed at each processing position exceeds the chip ratio threshold, or if the overlap area between the chip removal location and the current tool trajectory exceeds the overlap area threshold, it is inferred that there is a risk in the tool movement monitoring of the inner surface of the shear handle. A tool movement control signal is generated and sent to the automatic control platform. After receiving the tool movement control signal, the automatic control platform controls the tool movement, that is, controls the amount of chip accumulation and reduces the amount of chip accumulation based on the inertial potential energy brought by the tool movement speed. When the chip accumulation shows an accumulation trend, auxiliary cleaning is performed and the auxiliary cleaning cycle is set according to the actual processing progress. During tool movement, it is ensured that the chip cleaning location does not overlap with the location of the subsequent trajectory to be executed, so as to avoid deviation in tool movement.

[0035] If the ratio of the amount of accumulated chips to the amount of chips removed at each processing position does not exceed the chip ratio threshold, and the overlap area between the chip removal location and the current tool trajectory location does not exceed the overlap area threshold, it is inferred that there is no risk in the tool movement monitoring of the inner surface of the shear handle, and a normal tool movement signal is generated and sent to the automatic control platform.

[0036] After the tool travel monitoring is completed, the tool execution monitoring unit performs execution monitoring on the tool travel trajectory. Based on the execution monitoring and analysis of the tool travel trajectory, it infers whether the tool is in normal use in real time when the tool is performing the current inner surface machining. This avoids situations where the cutting force is not suitable for the material of the current machining surface, causing tool overload and failure to complete the actual inner surface machining, which also increases the risk of tool damage, such as chipping.

[0037] When the tool travels at the current machining position, the tool cutting force is obtained as the trajectory spacing that needs to be compensated when the tool executes the preset travel trajectory during the material cutting at the current position. At the same time, the real-time deformation of the tool cutting edge during the tool travel trajectory execution phase is obtained, where the deformation is represented by the defect area or deformation angle of the cutting edge.

[0038] The trajectory spacing that needs to be compensated when the tool cuts the material at the current position and executes the preset travel trajectory, and the real-time deformation of the cutting edge of the tool during the tool travel trajectory execution phase are respectively marked as execution compensation information and deformation influence information, and compared with trajectory spacing threshold and cutting edge deformation threshold respectively:

[0039] If the tool cutting force at the current position cuts the material and the trajectory spacing that needs to be compensated exceeds the trajectory spacing threshold when the tool follows the preset travel trajectory, or if the real-time deformation of the cutting edge of the tool exceeds the cutting edge deformation threshold during the tool travel trajectory execution phase, it is inferred that the tool travel trajectory execution monitoring is abnormal, a tool abnormality signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform changes the specifications of the tool at the current processing position and continuously monitors the tool travel trajectory. When an abnormality occurs, the processing is paused and the tool is cooled and noise is reduced.

[0040] If the tool cutting force is at the current position and the material is being cut, the trajectory spacing that needs to be compensated when the tool follows the preset travel trajectory does not exceed the trajectory spacing threshold, and the real-time deformation of the tool cutting edge does not exceed the cutting edge deformation threshold during the tool travel trajectory execution phase, then it is inferred that the tool travel trajectory execution monitoring is normal, a tool normal signal is generated and sent to the automatic control platform;

[0041] After setting the tool specifications and analyzing the cutting effects, the path analysis and planning unit performs machining process analysis on the inner surface machining process. It conducts targeted analysis based on different machining process types to plan the cutting path, ensuring that there are no deviations in the machining process, so that the workpiece changes caused by the cutting process will affect the execution of adjacent processes. Through path analysis and planning, the efficiency of inner surface machining is improved while reducing the impact of machining, minimizing the difficulty of executing the machining process.

[0042] The internal surface machining process is divided into helical cutting and cycloidal cutting. Helical cutting means that the tool performs helical cutting with any point in the machining position as the center, while cycloidal cutting means that the tool performs transverse and longitudinal cutting with any edge of the machining position as the standard.

[0043] During the inner surface machining stage, when different types of processes are combined, the preset spiral opening and the actual spiral opening at the execution position of the spiral cutting process are obtained. The spiral opening represents the maximum hole diameter on the workpiece surface before the spiral cutting process is executed. The preset spiral opening and the actual spiral opening are compared. If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation machining. Conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation machining.

[0044] The surface defect area at the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation machining is obtained. Simultaneously, the horizontal deviation of the corresponding adjacent helical cutting process execution position before and after the cycloidal cutting process is obtained. The surface defect area at the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation machining and the horizontal deviation of the corresponding adjacent helical cutting process execution position before and after the cycloidal cutting process are respectively labeled as helical machining influence parameters and cycloidal machining influence parameters, and compared with the defect area threshold and horizontal deviation threshold, respectively.

[0045] If the surface area of ​​the defect in the real-time cutting position of the adjacent cycloidal cutting process exceeds the defect area threshold after the opening deviation is processed, or if the horizontal deviation of the corresponding adjacent spiral cutting process execution position before and after the cycloidal cutting process exceeds the horizontal deviation threshold, it is inferred that there is a process processing influence in the process cooperation stage of different types of processes. A process influence signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform checks whether there is a conflict between the cutting positions of the processes being cooperated. If there is no conflict, the process position is changed. However, if there is a conflict, the tool required for the process execution is replaced with a tool of higher precision for the process execution.

[0046] If the surface area of ​​the defect in the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation processing does not exceed the defect area threshold, and the horizontal deviation of the corresponding adjacent spiral cutting process execution position before and after the cycloidal cutting process does not exceed the horizontal deviation threshold, it is inferred that there is no process processing influence in the process cooperation processing stage of different types of processes, and a process normal signal is generated and sent to the automatic control platform; after receiving it, the automatic control platform performs the cooperation processing according to the current process sequence.

[0047] After completing the path analysis and planning, the machining accuracy detection unit performs real-time accuracy detection on the inner surface machining and adjusts the accuracy based on the accuracy detection results. This facilitates timely adjustment of the tool execution trajectory, improves the efficiency of inner surface machining, and avoids continuous cutting deviations.

[0048] After cutting compensation is performed at each position of the tool travel trajectory during the internal surface machining process, the frequency of assembly deviation at the machining position is obtained, along with the frequency of continuous occurrence of cutting dimension deviation positions when assembly deviation occurs. The frequency of assembly deviation at the machining position and the frequency of continuous occurrence of cutting dimension deviation positions are then compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold, respectively.

[0049] If the frequency of assembly deviation at the machining position exceeds the deviation frequency threshold, or the frequency of continuous occurrence of cutting dimension deviation exceeds the continuous occurrence frequency threshold, it is inferred that the machining accuracy of the inner surface machining position is abnormal, a compensation deviation signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform adjusts the compensation deviation of the inner surface machining tool and replans the specifications and trajectory of the inner surface machining tool to reduce the compensation frequency of tool machining.

[0050] If the frequency of assembly deviation at the machining position does not exceed the deviation frequency threshold, and the frequency of continuous occurrence of cutting dimension deviation positions does not exceed the deviation continuous occurrence frequency threshold, then it is inferred that the machining accuracy detection of the inner surface machining position is normal, a normal accuracy signal is generated and sent to the automatic control platform.

[0051] In use, this invention comprises: a tool travel monitoring unit, which monitors the tool travel during the machining process of the inner surface of the scissor handle; a tool execution monitoring unit, which collects real-time machining impact data and potential machining risks during the machining stage of the inner surface of the scissor handle, and infers the tool travel monitoring results based on data analysis; a tool execution monitoring unit, which monitors the execution trajectory of the tool, and collects execution compensation information and deformation impact information when the tool travels to the current machining position, and infers whether the execution monitoring is qualified based on information comparison; a path analysis and planning unit, which analyzes the machining process of the inner surface, dividing the inner surface machining process into helical cutting and cycloidal cutting, collecting helical machining impact parameters and cycloidal machining impact parameters, and performing path analysis and planning based on parameter analysis; and a machining accuracy detection unit, which performs real-time accuracy detection of the inner surface machining.

[0052] Thresholds, preset values, preset ranges, etc. are set for result comparison and analysis to determine whether they are good or bad. The value of these thresholds is determined by a combination of large-scale model analysis of sample data and human experience. They can also be adjusted appropriately based on seasonal or common-sense influences.

[0053] Furthermore, the settings for weighting ratios, influence factors, etc., are based on the magnitude of each parameter's influence on the results. The specific values ​​are allocated to ultimately reflect the impact on the results. The settings for input and storage are also determined by a combination of large-scale model analysis of sample data and human experience. Appropriate adjustments can also be made based on seasonal or rational influence conditions.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic control system for machining the inner surface of a scissor handle, characterized in that, It includes an automatic control platform, which is connected to a tool travel monitoring unit, a tool execution monitoring unit, a path analysis and planning unit, and a machining accuracy detection unit. The tool travel monitoring unit monitors the tool travel during the machining process of the inner surface of the scissor handle. During the machining stage of the inner surface of the scissor handle, it collects real-time machining impact data and potential machining risks data, and infers the tool travel monitoring results based on data analysis. Real-time machining impact data and pending machining hazard data are the numerical ratios of the amount of machining debris accumulated to the amount of debris removed at each machining position, and the overlapping area between the location of the debris removal accumulation and the current tool trajectory position is also obtained. The tool execution monitoring unit monitors the tool travel trajectory. When the tool travels at the current machining position, it collects execution compensation information and deformation influence information, and infers whether the execution monitoring is qualified based on the information comparison. The execution compensation information and deformation influence information are respectively the trajectory spacing that needs to be compensated when the tool cutting force is cutting the material at the current position and the tool follows the preset travel trajectory, and the real-time deformation of the tool cutting edge during the execution phase of the tool travel trajectory; The path analysis and planning unit performs machining process analysis on the inner surface machining process, dividing the inner surface machining process into helical cutting and cycloidal cutting. It collects the influence parameters of helical machining and cycloidal machining, and performs path analysis and planning based on the parameter analysis. Helical cutting means that the tool performs helical cutting with any point in the machining position as the center, and cycloidal cutting means that the tool performs transverse and longitudinal cutting with any edge of the machining position as the standard. When different types of processes are processed together in the inner surface machining stage, the preset helical opening and the actual helical opening at the execution position of the helical cutting process are obtained, where the helical opening represents the maximum hole diameter on the workpiece surface before the helical cutting process is executed. If the preset spiral opening is higher than the actual spiral opening, it is marked as shallow deviation machining; conversely, if the preset spiral opening is lower than the actual spiral opening, it is marked as opening deviation machining. The influencing parameters for helical machining and cycloidal machining are, respectively, the surface defect area of ​​the real-time cutting position of the adjacent cycloidal cutting process after the opening deviation machining, and the horizontal deviation of the execution position of the corresponding adjacent helical cutting process before and after the execution of the cycloidal cutting process. If the influencing parameter of helical machining exceeds the surface defect area threshold, or the influencing parameter of cycloidal machining exceeds the horizontal deviation threshold, a process influence signal is generated and sent to the automatic control platform. If the influencing parameter of helical machining does not exceed the surface defect area threshold, and the influencing parameter of cycloidal machining does not exceed the horizontal deviation threshold, a process normal signal is generated and sent to the automatic control platform. After receiving the signal, the automatic control platform performs the machining in accordance with the current process sequence. The machining accuracy detection unit performs real-time accuracy detection on the internal surface machining.

2. The automatic control system for machining the inner surface of a scissor handle according to claim 1, characterized in that, If the real-time machining impact data exceeds the chip quantity ratio threshold, or the data of potential machining hazards exceeds the overlap area threshold, a tool travel control signal is generated and sent to the automatic control platform; if the real-time machining impact data does not exceed the chip quantity ratio threshold, and the data of potential machining hazards does not exceed the overlap area threshold, a tool travel normal signal is generated and sent to the automatic control platform.

3. The automatic control system for machining the inner surface of a scissor handle according to claim 2, characterized in that, If the compensation information exceeds the trajectory spacing threshold, or the deformation impact information exceeds the cutting edge deformation threshold, a tool abnormality signal is generated and sent to the automatic control platform; if the compensation information does not exceed the trajectory spacing threshold, and the deformation impact information does not exceed the cutting edge deformation threshold, a tool normal signal is generated and sent to the automatic control platform.

4. The automatic control system for machining the inner surface of a scissor handle according to claim 1, characterized in that, The process of the machining accuracy detection unit is as follows: After cutting compensation is performed at each position of the tool travel trajectory during the internal surface machining process, the frequency of assembly deviation at the machining position is obtained. At the same time, the frequency of continuous occurrence of the cutting dimension deviation position when the assembly deviation occurs is also obtained, and these are compared with the deviation generation frequency threshold and the deviation continuous occurrence frequency threshold, respectively. If the frequency of assembly deviation at the machining position exceeds the deviation frequency threshold, or the frequency of continuous occurrence of cutting dimension deviation exceeds the deviation continuous occurrence frequency threshold, a compensation deviation signal is generated and sent to the automatic control platform. If the frequency of assembly deviation at the machining position does not exceed the deviation frequency threshold, and the frequency of continuous occurrence of cutting dimension deviation position does not exceed the deviation continuous occurrence frequency threshold, then a normal accuracy signal is generated and sent to the automatic control platform.

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