A method and system for precise control of cutting parameters and tool life

Abstract

This invention discloses a method and system for precise control of cutting parameters and tool life, belonging to the field of cutting tool life management. Based on strict control of machining parameters and tool life determined by the part, machining step, and cutting parameters, it can accurately calculate the remaining tool life and remind users to change tools in a timely manner. This method enables comprehensive monitoring of the usage of all tools on all equipment in the entire workshop. Compared to the traditional model where each person oversees several machine tools, only one person is needed to manage the usage of hundreds of machine tools and tens of thousands of tools. It can record the specific tools used in each step of the part machining process and the execution of machining parameters at that time based on the part machining history, facilitating process engineers to analyze quality problems and improve process parameters, promoting continuous process improvement. The method proposed in this invention significantly improves the precision of life management compared to traditional life management models, increases tool utilization, and reduces part quality problems caused by tool malfunctions.

Description

Technical Field

[0001] This invention belongs to the field of cutting tool life management, and relates to a method and system for precise control of cutting parameters and tool life. Background Technology

[0002] Cutting tools are a crucial factor in the machining process, largely determining machining quality, efficiency, and cost. During cutting, tools wear down continuously, necessitating periodic sharpening or replacement to prevent fluctuations in machining quality caused by tool wear or breakage. Therefore, it's essential to establish a reasonable tool life and sharpen or replace tools before their lifespan expires. However, tool life control is exceptionally complex, as tool wear only occurs during machining and cannot be simply calculated based on time.

[0003] Currently, the industry typically calculates tool life based on the number of parts processed. However, machining workshops often process dozens or even hundreds of different parts. The number of parts a single tool can process within its lifespan varies depending on the material, cutting depth, cutting speed, and feed rate. Furthermore, due to production line setup and planning, processing a single part often requires multiple machine tools, each handling only a portion of the process. The lifespan of different parts of the same workpiece also varies due to differences in cutting parameters. Therefore, calculating tool life solely based on the number of parts processed is rather crude. Inadequate or even nonexistent tool life management can severely impact processing quality, efficiency, and cost. Excessive use time leads to decreased processing quality in the later stages of tool life, resulting in tool breakage and even workpiece scrap. Insufficient use time results in low tool utilization and frequent tool replacements, significantly increasing costs. Reasonable tool life management requires considering the specific parts and even specific areas being processed, as well as the cutting parameters used. Machining workshops often have dozens or even hundreds of machine tools using thousands to tens of thousands of tools to process hundreds of different parts. Under these circumstances, achieving precise tool life control is extremely difficult. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the prior art, it is necessary to consider the cutting parameters of the specific tool being processed on the specific part or even the specific part, as well as the application. However, in machining workshops, there are often dozens or even hundreds of machine tools using thousands to tens of thousands of tools to process hundreds of parts. Under such circumstances, it is difficult to achieve precise control of tool life. The invention provides a method and system for precise control of cutting parameters and tool life.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] The present invention proposes a method for precise control of cutting parameters and tool life, comprising the following steps:

[0007] Obtain a structured tool list, tool history information, and tool machining parameter acquisition table;

[0008] Based on the structured tool list and tool machining parameter acquisition table, obtain the tool machining steps;

[0009] The preset tool life for the current machining step is obtained from the structured tool list, and the original remaining tool life is obtained from the tool history information.

[0010] Based on the preset tool life and the original remaining tool life, the remaining tool life, remaining number of workpieces to be processed, and remaining processing time are obtained, thereby achieving precise control of tool life.

[0011] Preferably, the method for obtaining the remaining tool life is as follows:

[0012] Remaining tool life = (original remaining tool life - (1 / preset tool life S)) * 100%.

[0013] Preferably, the method for obtaining the number of remaining workpieces to be machined by the tool is as follows:

[0014] Remaining number of workpieces = percentage tool life * preset tool life for the current step.

[0015] Preferably, the method for obtaining the remaining processing time is as follows:

[0016] Remaining processing time = number of remaining parts to be processed * processing time of each step.

[0017] Preferably, the standard values ​​of cutting parameters are obtained from the tool list, and the real-time values ​​of cutting parameters are obtained from the tool processing parameter acquisition table.

[0018] The machining machine will alarm when the real-time value of the cutting parameters exceeds the standard value of the cutting parameters.

[0019] The machining machine operates normally when the real-time value of the cutting parameters is less than or equal to the standard value of the cutting parameters.

[0020] Preferably, the structured tool list includes the equipment model used to process a part, the process flow, the steps to be performed in each process, and the tool position number, tool model, tool setting length, tool setting radius, tool preset life and standard values ​​of cutting parameters to be used in each step.

[0021] Preferably, the tool's history information is obtained by adding an RFID chip or QR code to each tool.

[0022] Preferably, the tool history information includes the tool's unique code, real-time values ​​of cutting parameters, and remaining tool life.

[0023] This invention proposes a system for precise control of cutting parameters and tool life, comprising:

[0024] The tool information acquisition module is used to acquire a structured tool list, tool history information, and tool machining parameter acquisition table.

[0025] The machining step acquisition module is used to acquire the machining steps of the tool based on the structured tool list and the tool machining parameter acquisition table.

[0026] The tool life acquisition module is used to obtain the preset tool life of the current machining step according to the structured tool list, and to obtain the original remaining tool life according to the tool history table information.

[0027] The tool life detection module is used to obtain the remaining tool life, remaining number of workpieces to be processed, and remaining processing time based on the preset tool life and the original remaining tool life, so as to achieve precise control of tool life.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention proposes a method for precise control of cutting parameters and tool life. It records the specific tools used in each step of the part machining process and the execution status of the machining parameters at that time, based on the part machining history. This facilitates process engineers in analyzing quality issues and improving process parameters, promoting continuous process improvement. Based on strict control of machining parameters and the tool life determined by the part, machining step, and cutting parameters, it can accurately calculate the remaining tool life, reminding users to change tools in a timely manner, thus achieving precise control of tool life. This method enables comprehensive monitoring of the usage of all tools on all equipment in the entire workshop. Compared to the traditional model where each person monitors several machine tools, only one person is needed to manage the usage of hundreds of machine tools and tens of thousands of tools.

[0030] Furthermore, considering factors such as differences in equipment, parts, machining steps, and cutting parameters, it can precisely control tool life, greatly improving the precision of life management compared to traditional life management models, increasing tool utilization, and reducing part quality problems caused by tool malfunctions.

[0031] Furthermore, it enables strict control of cutting parameters during the machining process. Real-time alarms can be triggered if the on-site machining parameters do not match the process, reminding on-site technicians to pay attention and ensuring that the machining process is strictly controlled.

[0032] The present invention proposes a system for precise control of cutting parameters and tool life. By dividing the system into a tool information acquisition module, a machining step acquisition module, a tool life acquisition module, and a tool life detection module, the modular approach makes each module independent of the others, facilitating unified management of each module. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a flowchart of the method for precise control of cutting parameters and tool life according to the present invention.

[0035] Figure 2 This is an overall flowchart of the method for precise control of cutting parameters and tool life according to the present invention.

[0036] Figure 3 This is a structural tool list diagram of the present invention.

[0037] Figure 4 This is a diagram of the cutting parameters and tool life monitoring module of the present invention.

[0038] Figure 5 This is a system diagram illustrating the precise control of cutting parameters and tool life according to the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0045] The present invention will now be described in further detail with reference to the accompanying drawings:

[0046] This invention proposes a method for precise control of cutting parameters and tool life, such as... Figure 1 As shown, it includes the following steps:

[0047] S1. Obtain the structured tool list, tool history information, and tool machining parameter acquisition table;

[0048] A structured tool list includes the equipment model used to machine a part, the machining process flow, the steps to be performed in each process, and the tool position number, tool model, tool setting length, tool setting radius, tool preset life, and standard values ​​of cutting parameters required for each step.

[0049] By adding RFID chips or QR code information to each knife, the knife's history information can be obtained.

[0050] The tool history information includes the tool's unique code, real-time values ​​of cutting parameters, and remaining tool life.

[0051] S2. Based on the structured tool list and tool machining parameter acquisition table, obtain the tool machining steps;

[0052] S3. Obtain the preset tool life for the current machining step based on the structured tool list, and obtain the original remaining tool life based on the tool history information.

[0053] S4. Based on the preset tool life and the original remaining tool life, obtain the remaining tool life, remaining number of workpieces to be processed, and remaining processing time to achieve precise control of tool life.

[0054] The method for obtaining the remaining tool life is as follows:

[0055] Remaining tool life = (original remaining tool life - (1 / preset tool life S)) * 100%.

[0056] The method for obtaining the number of remaining workpieces to be machined is as follows:

[0057] Remaining number of workpieces = percentage tool life * preset tool life for the current step.

[0058] The method for obtaining the remaining processing time is as follows:

[0059] Remaining processing time = number of remaining parts to be processed * processing time of each step.

[0060] Obtain the standard values ​​of cutting parameters from the tool list and the real-time values ​​of cutting parameters from the tool processing parameter acquisition table.

[0061] The machining machine will alarm when the real-time value of the cutting parameters exceeds the standard value of the cutting parameters.

[0062] The machining machine operates normally when the real-time value of the cutting parameters is less than or equal to the standard value of the cutting parameters.

[0063] like Figure 2 As shown, the specific steps include the following:

[0064] Step 1: The structured tool list defines the equipment model used for machining a part, the machining process flow, the steps to be performed in each process, and the tool position number, tool model, tool setting length, tool setting radius, preset tool life, and standard values ​​of cutting parameters required for each step. Here, the preset tool life refers to the number of times the tool can be used to machine the corresponding part feature in this step according to the specified cutting parameters. For example, if the step is drilling, the life here defines the number of parts that can be machined by the drill bit according to the cutting parameters, machining only a set of holes at a specified location on the part. If another step in machining this part still requires the same drill bit, different machining lives can be set according to the specific content and cutting parameters of the other step. Figure 3 As shown.

[0065] Step 2, Tool Physical Management Module: The tool physical management module is mainly used to manage all physical tools in the workshop. A tool history table is created for each tool, including three columns: tool unique code, real-time cutting parameter values, and remaining tool life. Simultaneously, an RFID chip or QR code needs to be added to each tool, allowing the tool history table information to be read through the QR code or chip.

[0066] Step 3, Tool Installation Management Module: This module is mainly used to manage tool usage and installation. Through this module, the specific equipment and tool position number of each tool can be obtained.

[0067] 1) Obtain the tool list: Before machining the part, obtain the tool list according to the part number;

[0068] 2) Tool preparation: Prepare all the tools required according to the tool list;

[0069] 3) Tool assembly: For tools that need to be assembled, assemble them according to the tool BOM (inserts, tool holders, accessories, etc.) in the tool list, and set the tools according to the tool length and radius specified in the tool list;

[0070] 4) Tool loading: Install the prepared tools in the machine tool tool magazine according to the tool position numbers in the tool list, and write the tool position numbers into the tool history table;

[0071] 5) Establish a tool list for each machining equipment: Compile a tool history table for all tools on that equipment to form a tool list. This list is linked to the equipment number and model. The table mainly includes three columns: part number, tool position number, tool unique code, standard cutting parameter values, real-time cutting parameter values, and remaining tool life. The compiled tool lists for all equipment constitute the workshop tool list, which is the primary tool management tool list for the workshop.

[0072] Step 4, Machining Parameter Acquisition Module: This module is mainly used to collect machining process parameters. The module is connected to each machining equipment to collect machining process parameters and form a machining parameter acquisition table, which mainly includes: equipment number, equipment model, machining part number, current tool position number, speed, feed and other cutting parameters, as well as acquisition time.

[0073] Step 5, Cutting Parameter and Tool Life Monitoring Module: This module is mainly used to monitor whether the cutting parameters meet the process requirements, monitor the tool life, and provide timely warnings when parameters are out of tolerance or tool life is insufficient.

[0074] 1) Read the processing parameter acquisition table uploaded by the current device to obtain the processing part number;

[0075] 2) Establish a part machining history table: Obtain a structured tool list based on the part number and equipment model. After the original tool position number, tool model, preset tool life, and standard cutting parameter values ​​for each machining step, add three columns: tool unique code, real-time cutting parameter value, and remaining tool life to form a part machining history table. Match the tool position number to the specific machining step, compare the real-time cutting parameters with the standard cutting parameter values, and promptly alarm if there is a deviation, so as to avoid the impact of improper use of cutting parameters on machining quality and tool life.

[0076] Among them, the tool list is read, the tool position number is matched with the structured tool list to obtain the standard value of the cutting parameters, and the real-time value of the cutting parameters is obtained from the self-machining parameter acquisition table;

[0077] 3) For example Figure 4 As shown, calculate the remaining tool life:

[0078] First, retrieve the remaining life value from the tool history table, and set the initial life of each tool to 1 when it is first put on the machine.

[0079] Second, after the cutting tool starts processing, based on the uploaded processing parameter acquisition table, the part number and the current tool position number being processed by the current equipment can be identified, and the specific cutting tool and processing steps being used can be obtained.

[0080] Third, when the current tool position number changes in the uploaded machining data acquisition table, it indicates that the previous machining step has been completed, and the process will switch to the next tool position number to execute the next machining step.

[0081] Fourth, at this time, based on the tool position number of the completed step, read the preset tool life S specified for that step from the structured tool list. This life is the number of parts that can be theoretically used to process only that step. For example, S = 5000 means that the tool can process 5000 parts only for that step.

[0082] Fifth, after this step is completed, the remaining tool life needs to be reduced by (1 / 5000), that is, after each step, the percentage of tool life needs to be calculated:

[0083] Remaining tool life = (Original remaining tool life - (1 / Preset tool life S)) * 100%

[0084] Sixth, obtaining the remaining number of parts to be processed and the remaining processing time:

[0085] Remaining number of workpieces = Tool percentage life * Preset tool life for the current step Remaining machining time = Remaining number of workpieces * Machining time for the current step

[0086] The above values ​​represent the percentage of tool life. Update these values ​​in the tool history table, the tool list, and the part machining history table. When a new tool is installed, update the tool list and the part machining history table according to the process in the tool installation management module.

[0087] This invention proposes a system for precise control of cutting parameters and tool life, such as... Figure 5 As shown, it includes a tool information acquisition module, a machining step acquisition module, a tool life acquisition module, and a tool life detection module;

[0088] The tool information acquisition module is used to acquire a structured tool list, tool history information, and tool machining parameter acquisition table.

[0089] The machining step acquisition module is used to acquire the machining steps of the tool based on the structured tool list and the tool machining parameter acquisition table;

[0090] The tool life acquisition module is used to obtain the preset tool life of the current machining step according to the structured tool list, and to obtain the original remaining tool life according to the tool history table information.

[0091] The tool life detection module is used to obtain the remaining tool life, remaining number of workpieces to be processed, and remaining processing time based on the preset tool life and the original remaining tool life, so as to achieve precise control of tool life.

[0092] This invention proposes a method for precise control of cutting parameters and tool life, which has the following advantages: 1) It achieves strict control of cutting parameters during the machining process. Real-time alarms are triggered when on-site machining parameters deviate from the process, alerting on-site technicians and ensuring strict control of the machining process. 2) Based on strict control of machining parameters, and using tool life determined by the part, machining step, and cutting parameters, accurate remaining tool life calculations can be performed, prompting timely tool replacement. The above-mentioned life calculation method strictly considers factors such as equipment differences, part differences, machining step differences, and cutting parameter differences, enabling precise control of tool life. Compared to traditional life management models, this significantly improves the precision of life management, increases tool utilization, and reduces part quality problems caused by tool abnormalities. 3) This method allows for comprehensive monitoring of the usage of all tools on all equipment throughout the workshop. Compared to the traditional model where each person oversees several machine tools, only one person is needed to manage the usage of hundreds of machine tools and tens of thousands of tools. 4) It generates a part machining history table, which records the specific tools used in each step of the part machining process and the execution of machining parameters at that time. This facilitates process engineers in analyzing quality problems and improving process parameters, promoting continuous process improvement. 5) A tool remaining life warning value can be set, and an alarm will be triggered when the tool life is less than the warning value to remind you to replace the tool in time.

[0093] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for precise control of cutting parameters and tool life, characterized in that, Includes the following steps: The system acquires a structured tool list, tool history information, and tool machining parameter collection table. The structured tool list includes the equipment model used to machine a part, the machining process flow, the steps required for each process, and the tool position number, tool model, tool setting length, tool setting radius, preset tool life, and standard values ​​of cutting parameters required for each step. Tool history information is obtained by adding RFID chips or QR codes to each tool. The tool history information includes a unique tool code, real-time cutting parameter values, and remaining tool life. Based on the structured tool list and tool machining parameter acquisition table, obtain the tool machining steps; The preset tool life for the current machining step is obtained from the structured tool list, and the original remaining tool life is obtained from the tool history information. Based on the preset tool life and the original remaining tool life, the remaining tool life, remaining number of workpieces to be machined, and remaining machining time are obtained, enabling precise control of tool life; Remaining tool life = (Original remaining tool life - (1 / Preset tool life S)) 100%; Remaining workpieces = Tool percentage life Current tool life preset for the current machining step; Remaining machining time = number of remaining workpieces. Processing time for each step.

2. The method for precise control of cutting parameters and tool life according to claim 1, characterized in that, Obtain the standard values ​​of cutting parameters from the tool list and the real-time values ​​of cutting parameters from the tool processing parameter acquisition table. The machining machine will alarm when the real-time value of the cutting parameters exceeds the standard value of the cutting parameters. The machining machine operates normally when the real-time value of the cutting parameters is less than or equal to the standard value of the cutting parameters.

3. A system for precise control of cutting parameters and tool life, characterized in that, The method described by any one of claims 1 to 2 includes: The tool information acquisition module is used to acquire a structured tool list, tool history information, and tool machining parameter acquisition table. The machining step acquisition module is used to acquire the machining steps of the tool based on the structured tool list and the tool machining parameter acquisition table. The tool life acquisition module is used to obtain the preset tool life of the current machining step according to the structured tool list, and to obtain the original remaining tool life according to the tool history table information. The tool life detection module is used to obtain the remaining tool life, remaining number of workpieces to be processed, and remaining processing time based on the preset tool life and the original remaining tool life, so as to achieve precise control of tool life.

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