Numerical control machine tool cutter management system

Abstract

The invention discloses a numerical control machine tool cutter management system which comprises a hardware layer, a system layer, a function module and a system interface. The hardware layer is composed of a numerical control machine tool, a tool presetting instrument, a tool recognition device, a tool setting instrument, a bar code scanning gun, an industrial computer, a server and the like and is used for data acquisition, transmission and storage. The system layer comprises tool management software, a database management system, data acquisition and monitoring software and a manufacturing execution system interface, and full life cycle management of tools is achieved. The system is provided with a tool basic data management module, an inventory management module, a service life management module, a circulation management module, an abrasion monitoring and compensation module, a purchase plan management module, a performance parameter management module and other functional modules, and operation and display are carried out through a system interface. The system can improve the tool management efficiency and precision, reduce the tool cost, improve the machining quality and the production efficiency, and is suitable for efficient tool management of numerical control machining enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machining, and particularly to a tool management system for a numerical control machine tool. Background Art

[0002] In modern manufacturing, numerical control machine tools are widely used in the processing and production of various parts. As a key component of a numerical control machine tool, the performance and condition of the tool directly affect the machining quality and production efficiency. However, many enterprises currently face numerous challenges in the tool management of numerical control machine tools. On the one hand, tool information is often inaccurately and incompletely recorded, making it difficult to quickly and accurately find the required tool during the production process, which affects the production progress; on the other hand, the tool inventory management is chaotic, with the phenomena of tool backlog or shortage, increasing the tool cost and production risk. In addition, there are also deficiencies in aspects such as tool life management, wear monitoring, and the tracking of the transfer process, which cannot effectively guarantee the machining accuracy and production efficiency. Therefore, it is of great practical significance to develop a system that can achieve the full life cycle management of the tools for numerical control machine tools. Summary of the Invention

[0003] The present invention aims to overcome the deficiencies in the prior art and provide a tool management system for a numerical control machine tool that is comprehensive in function, efficient, and reliable, realizing functions such as accurate recording of tool information, precise management of inventory, effective monitoring of tool life, real-time monitoring and compensation of wear, clear tracking of the transfer process, and reasonable formulation of procurement plans, thereby improving the tool management efficiency and accuracy, reducing the tool cost, and enhancing the machining quality and production efficiency.

[0004] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0005] The present invention includes a hardware layer, a system layer, functional modules, and a system interface. The hardware layer includes a server, an industrial computer, a barcode scanner, a tool identification device, a tool presetting instrument, and a tool setter. The tool presetting instrument is used to measure the geometric parameters and wear conditions of tools. The tool identification device is used to identify tool information. The tool setter is used to measure the actual position of the tool on the machine tool. The barcode scanner is used to scan tool barcodes. The industrial computer and the server are used for data processing and storage. The system layer includes a tool management unit, a database management unit, a data acquisition and monitoring unit, and a manufacturing execution system interface. The tool management unit is used to implement the daily management and scheduling functions of tools. The database management unit is used to store and manage various data of tools. The data acquisition and monitoring unit is used to collect and monitor the operating status of the machine tool and tools in real time. The manufacturing execution system interface is used to perform data interaction with the enterprise's manufacturing execution system. The system interface includes function interfaces for tool query and statistics, system setting and maintenance, and system configuration and customization. The functional modules include a tool basic data management module, a tool inventory management module, a tool life management module, a tool transfer management module, a tool wear monitoring and compensation module, a tool procurement plan management module, and a tool performance parameter management module.

[0006] The tool basic data management module is used to input and manage the basic information of tools, including tool numbers, types, specifications, materials, manufacturers, service lives, and tool pictures, and generate a unique QR code or RFID tag for each tool. The tool inventory management module is used to manage the warehousing, outbound, and inventory query of tools, including recording the warehousing time, quantity, suppliers, outbound time, quantity, recipients of tools, and real-time query of the inventory quantity and status of tools, and sending a warning signal according to the set safety inventory threshold. The tool life management module is used to monitor the life of tools. By collecting the operating data of the machine tool and the usage data of tools, and combining with the tool wear model, it calculates the remaining life of the tool, and sends a warning signal when the remaining life reaches the set warning value. At the same time, it statistically analyzes the service life of tools. The tool transfer management module is used to track the transfer process of tools, including the requisition and return, installation and disassembly of tools, record the transfer situation of tools among the warehouse, workshop, and machine tool, and generate a tool transfer trajectory diagram. The tool wear monitoring and compensation module is used to monitor the wear degree of tools. When the wear reaches a certain level, it sends an alarm signal, and calculates the compensation value of the tool according to the actual size and wear amount of the tool measured by the tool setter, and writes the compensation value into the numerical control system for tool compensation. The tool procurement plan management module is used to predict the tool demand, generate tool procurement requisition forms, approve procurement applications and execute purchase orders, and manage supplier information. The tool performance parameter management module is used to set the cutting parameters of tools, manage the tool wear model, and perform performance testing and evaluation on tools.

[0007] The tool identification device is an RFID reader / writer, which can read and write the RFID tag information of the tool to achieve rapid identification and tracking of the tool.

[0008] The wear model in the tool life management module is established according to the type, material, and processing conditions of the tool, and the parameters of the wear model are optimized through the collection and analysis of the actual usage data of the tool.

[0009] The demand forecasting in the tool procurement plan management module uses statistical methods and machine learning algorithms to predict the tool demand in a future period based on the tool usage history, inventory level, and production plan factors.

[0010] The tool query and statistics function of the system interface provides multiple query methods, including querying tool information by tool number, type, specification, and manufacturer, and generating tool usage frequency reports and tool inventory turnover reports.

[0011] The beneficial effects of the present invention are as follows:

[0012] The present invention is a tool management system for a numerically controlled machine tool. Compared with the prior art, through the collaborative work of the hardware layer and the software layer, the present invention realizes the refined management of the entire life cycle of the tool. In terms of tool basic data management, tool information is accurately entered using equipment such as a tool presetting instrument and a unique identifier is generated to ensure the accuracy and traceability of the tool information. The tool inventory management module monitors the inventory in real time and gives automatic warnings to avoid tool backlogs or shortages and reduce inventory costs. The tool life management module combines the wear model and actual usage data to accurately predict the tool life, replace the tool in a timely manner, and reduce the processing quality problems and the risk of machine tool damage caused by tool wear. The tool transfer management module clearly tracks the tool transfer process, improving the transparency and controllability of tool management. The tool wear monitoring and compensation module monitors tool wear in real time and automatically calculates the compensation value to ensure machining accuracy. The tool procurement plan management module scientifically predicts tool demand, reasonably formulates procurement plans, and reduces procurement costs. The tool performance parameter management module provides optimized cutting parameters for tool use, improving machining efficiency and quality. The system interface is user-friendly and easy to operate, improving the efficiency and convenience of tool management. Generally speaking, the system of the present invention can significantly improve the efficiency and accuracy of tool management, reduce tool costs, improve machining quality and production efficiency, and has good economic benefits and popularization and application value. Description of the Drawings

[0013] Figure 1 It is a block diagram of the system structure principle of the present invention. Detailed Embodiments

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not limit the present invention.

[0015] As Figure 1 shown: The present invention includes a hardware layer, a system layer, functional modules, and a system interface.

[0016] The hardware layer includes a numerically controlled machine tool, a tool presetting instrument, a tool identification device, a tool setter, a barcode scanner, an industrial computer, and a server. The numerically controlled machine tool is the core equipment for processing operations; the tool presetting instrument is used to accurately measure the geometric parameters and wear conditions of the tool before it is installed on the machine tool, providing accurate data support for the use and management of the tool; the tool identification device uses an RFID reader / writer to quickly read and write the RFID tag information of the tool, realizing the quick identification and tracking of the tool, and improving the efficiency and accuracy of tool management; the tool setter is installed on the numerically controlled machine tool to measure the actual position of the tool on the machine tool, ensuring the installation accuracy of the tool and providing reliable tool position information for the processing process; the barcode scanner is used to scan the tool barcode and quickly input the tool information, facilitating the warehousing, outbound, and inventory management of the tool; the industrial computer and the server are used for data processing and storage, ensuring the stable operation of the system and the secure storage of data.

[0017] The system layer includes a tool management unit, a database management unit, a data acquisition and monitoring unit, and a manufacturing execution system interface. The tool management unit is the core of the system, with multifunctional modules such as tool basic data management, inventory management, life management, transfer management, wear monitoring and compensation, procurement plan management, and performance parameter management, realizing the full life cycle management of the tool; the database management unit is used to store and manage various data of the tool, including tool basic information, inventory data, usage data, wear data, etc., ensuring the integrity and consistency of the data; the data acquisition and monitoring unit communicates with devices such as numerically controlled machine tools, tool presetting instruments, and tool setters to collect real-time operation data of the machine tool, tool usage data, processing process data, etc., and transmits the data to the server for storage and processing, while monitoring the operation status of the devices to promptly discover and handle abnormal situations; the manufacturing execution system interface is used for data interaction with the enterprise's manufacturing execution system to obtain production plans, production progress, etc. information, realizing the integrated management of the production process and improving the production management level of the enterprise.

[0018] The tool basic data management module is used to input and manage the basic information of tools. Information such as tool number, type, specification, material, manufacturer, service life, and tool pictures is input through manual input or automatic collection from devices such as tool presetters and tool setting gauges. A unique QR code or RFID tag is generated for each tool to achieve one-code-for-one-tool management, facilitating tool identification and tracking. At the same time, tools are classified and managed, and reasonable tool coding rules are designed to facilitate tool query and management.

[0019] The tool inventory management module is responsible for tool receipt, issue, and inventory query. When tools are received after procurement, use a barcode scanner to scan the tool barcode, input the tool information into the system, record information such as receipt time, quantity, and supplier, and update the tool inventory data; according to the production plan or workshop requirements, operators apply for tool requisition in the system. After approval, they go to the tool storage to pick up the tools and register the requisition in the system, recording information such as issue time, quantity, and requisition personnel, and at the same time updating the tool inventory data; query the inventory quantity, status, etc. of tools in real time. When the tool inventory is lower or higher than the set safety inventory threshold, the system automatically sends a warning signal to remind the purchasing staff to purchase in time or adjust the inventory to ensure the rationality and timeliness of tool inventory.

[0020] The tool life management module calculates the remaining life of the tool in real time by collecting the operating data of the machine tool and the usage data of the tool, such as cutting time, cutting speed, feed rate, spindle load, etc., and combines with the tool wear model, and displays the tool life status on the system interface. When the remaining life of the tool reaches the set warning value, the system automatically sends a warning signal to remind the operator to replace the tool in time to avoid affecting the machining quality and damaging the machine tool due to excessive tool wear. At the same time, the service life of the tool is statistically analyzed to generate a tool life report, helping the enterprise understand the performance and service life of different brands and models of tools, and providing a reference for tool selection and procurement. The wear model in the tool life management module is established according to factors such as tool type, material, and machining conditions, and the parameters of the wear model are continuously optimized through the collection and analysis of actual tool usage data to improve the accuracy of life prediction.

[0021] The tool transfer management module tracks the tool transfer process in real time. When an operator applies for tool requisition in the system, after approval, the operator goes to the tool storage to pick up the tool and registers the requisition in the system. After use, the tool is returned to the tool storage and the return is registered in the system, and the system automatically updates the tool status and transfer records. Before installing the tool on the CNC machine tool, use a barcode scanner to scan the tool barcode, and the system automatically associates the tool information with the machine tool information and records the tool installation time. When the tool needs to be disassembled, scan the tool barcode again, and the system automatically updates the tool status and disassembly time. The system generates a tool transfer trajectory diagram to facilitate managers to understand the real-time location and usage status of the tool, improving the transparency and controllability of tool management.

[0022] The tool wear monitoring and compensation module monitors signals such as the cutting sound, vibration, and temperature of the tool in real time, and combines with the tool wear model to judge the degree of tool wear. When the tool wear reaches a certain level, the system automatically issues an alarm signal and prompts the operator to perform tool compensation or replacement. According to the system prompt, the operator uses a tool setter to measure the tool, obtains the actual size and wear amount of the tool, and the system automatically calculates the compensation value and writes the compensation value into the CNC system to achieve precise tool compensation and ensure machining accuracy.

[0023] The tool procurement plan management module predicts the tool demand in the next period based on factors such as tool usage history, inventory level, and production plan, using statistical methods and machine learning algorithms, providing a basis for formulating the procurement plan. The operator fills in a tool procurement application form in the system, including tool type, specification, quantity, estimated procurement time, etc., and submits it to the procurement department for approval. After the procurement department approves, the system automatically generates a purchase order and sends it to the supplier. The purchase order contains detailed tool information and procurement requirements. At the same time, the system maintains supplier information, including supplier name, contact person, contact information, supplier qualification, supply history record, etc., evaluates and manages the supplier to ensure the quality, reasonable price, and timely supply of the purchased tools.

[0024] The tool performance parameter management module provides reasonably recommended cutting parameters, which can be adjusted by the operator according to the actual situation. Establish and manage a tool wear model library, establish different wear models according to factors such as tool type, material, and machining conditions, and continuously optimize the parameters of the wear model through the collection and analysis of actual tool usage data. In the links of tool procurement, regrinding, and repair, perform performance tests on the tool, such as hardness test, strength test, precision test, etc., to evaluate the performance quality of the tool and ensure that it meets the machining requirements.

[0025] The system interface includes functional interfaces such as the home page, tool query and statistics, system setup and maintenance, and system configuration and customization. The home page displays the main functional modules of the system, tool overview information, and reminders of tasks to be processed; Tool query and statistics provide various query methods, such as querying tool information by tool number, type, specification, manufacturer, etc., and generating statistical reports such as tool usage frequency reports and tool inventory turnover rate reports; System setup and maintenance include tool classification rule setup, coding rule setup, system parameter setup, etc.; System configuration and customization can be customized and developed according to the actual needs and production processes of the enterprise, such as customizing tool information fields, tool transfer processes, alarm rules, etc., to improve the flexibility and adaptability of the system.

[0026] The system hardware devices include a server, an industrial computer, a barcode scanner, an RFID reader / writer, a tool presetting instrument, and a tool setter. The server is used to store and process system data. It is recommended to use a high-performance server with sufficient CPU, memory, storage, and network bandwidth to ensure the stable operation of the system; The industrial computer is installed in the workshop or tool warehouse and is used for on-site data collection, operation, and monitoring. It needs to have certain dust-proof, moisture-proof, and anti-interference capabilities; The barcode scanner is used to scan tool barcodes to quickly identify tool information, and requires fast scanning speed, high accuracy, and strong durability; The RFID reader / writer is used to read and write RFID tag information of tools to achieve fast identification and tracking of tools; The tool presetting instrument measures the geometric parameters and wear conditions of tools to provide accurate data for tool use and management; The tool setter measures the actual position of the tool on the machine tool and is used for tool installation, tool setting, and compensation.

[0027] The system includes a tool management unit, a database management unit, a data collection and monitoring unit, and a manufacturing execution system interface system. The tool management unit is the core of the system and is responsible for the full life cycle management of tools. It has the ability to implement the above functional modules and requires a user-friendly system interface, simple operation, and stable performance; The database management unit is used to store and manage a large amount of data, such as tool information, inventory data, production data, etc. It is recommended to use mainstream database management units such as Oracle, MySQL, SQL Server, etc., which have good data security and reliability; The data collection and monitoring unit collects and monitors the operating status data of machine tools and tools in real time and transmits the data to the server for storage and processing; The manufacturing execution system interface system realizes the integration with the MES system, obtains information such as production plans and production progress, and provides a basis for tool scheduling and management.

[0028] Example:

[0029] In a certain machining enterprise, there are multiple CNC machine tools in the workshop, and effective management of cutting tools is required. First, install the hardware equipment of the CNC machine tool cutting tool management unit of the present invention, including installing tool setting gauges on each CNC machine tool, and configuring equipment such as tool presetters, RFID readers / writers, barcode scanners, industrial computers, and servers. Then, install and configure the system, including the cutting tool management unit, database management unit, data acquisition and monitoring unit, and manufacturing execution system interface system, to ensure the normal operation of the system.

[0030] In terms of basic cutting tool data management, the operator uses a tool presetter to measure the geometric parameters and wear conditions of newly purchased cutting tools, and enters information such as the cutting tool number, type, specification, material, manufacturer, service life, and cutting tool picture into the system through manual input or automatic acquisition. A unique RFID tag is generated for each cutting tool, and the cutting tool information is written into the tag using an RFID reader / writer to achieve the management of one code for one tool. At the same time, the cutting tools are classified and coded to facilitate subsequent query and management.

[0031] In cutting tool inventory management, when the cutting tools are purchased and arrive at the warehouse, the warehouse management personnel use a barcode scanner to scan the cutting tool barcodes, enter the cutting tool information into the system, record information such as the warehousing time, quantity, and supplier, and update the cutting tool inventory data. The production personnel apply for the use of cutting tools in the system according to the production plan. After approval, they go to the cutting tool warehouse to pick up the cutting tools and register the use in the system, recording information such as the outbound time, quantity, and user, and at the same time updating the cutting tool inventory data. The system displays the inventory quantity and status of the cutting tools in real time. When the cutting tool inventory is lower than the set safety inventory, an early warning signal is automatically sent to remind the purchasing personnel to purchase in time.

[0032] In the process of cutting tool life management, the system uses the data acquisition and monitoring unit to collect the operation data of the machine tool and the use data of the cutting tool in real time, combines with the wear model of the cutting tool, calculates the remaining life of the cutting tool, and displays it on the system interface. When the remaining life of the cutting tool reaches the warning value, the system sends out a warning signal to remind the operator to replace the cutting tool in time. At the same time, the system statistically analyzes the service life of the cutting tools, generates a cutting tool life report, and provides a reference for the cutting tool selection and procurement of the enterprise.

[0033] In terms of tool transfer management, the operator applies for tool requisition in the system. After approval, the operator goes to the tool storage to pick up the tool and registers the requisition in the system. After use, the tool is returned to the tool storage and the return is registered in the system. The system automatically updates the tool status and transfer records. Before installing the tool on the CNC machine tool, the RFID reader is used to scan the tool RFID tag, and the system automatically associates the tool information with the machine tool information and records the tool installation time. When the tool needs to be disassembled, the tool RFID tag is scanned again, and the system automatically updates the tool status and disassembly time. The system generates a tool transfer trajectory diagram to facilitate the management personnel to understand the real-time position and usage status of the tool.

[0034] In the process of tool wear monitoring and compensation, the system monitors signals such as the cutting sound, vibration, and temperature of the tool in real time, and combines with the tool wear model to judge the degree of tool wear. When the tool wear reaches a certain level, the system automatically issues an alarm signal and prompts the operator to perform tool compensation or replacement. The operator uses a tool setter to measure the tool to obtain the actual size and wear amount of the tool. The system automatically calculates the compensation value of the tool and writes the compensation value into the CNC system to achieve precise compensation of the tool and ensure the machining accuracy.

[0035] In the tool procurement plan management, the system uses statistical methods and machine learning algorithms to predict the tool demand in the next period based on factors such as tool usage history, inventory level, and production plan, providing a basis for formulating the procurement plan. The purchaser fills in the tool procurement application form in the system. After approval, the system automatically generates a purchase order and sends it to the supplier. At the same time, the system maintains supplier information, evaluates and manages suppliers to ensure the reliable quality, reasonable price, and timely supply of the purchased tools.

[0036] In terms of tool performance parameter management, the system provides reasonably recommended cutting parameters, and the operator can adjust them according to the actual situation. A tool wear model library is established and managed. Different wear models are established according to factors such as tool type, material, and processing conditions. By collecting and analyzing the actual tool usage data, the parameters of the wear model are continuously optimized. In the links of tool procurement, regrinding, and repair, the tool performance is tested to evaluate the tool performance quality and ensure that it meets the processing requirements.

[0037] By implementing the CNC machine tool tool management unit of the present invention, the machining enterprise has realized the full life cycle management of tools, improved the tool management efficiency and accuracy, reduced the tool cost, enhanced the machining quality and production efficiency, and achieved remarkable economic and social benefits.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0039] The technical solution of the present invention is not limited to the limitations of the above specific embodiments. Any technical deformation made according to the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A tool management system for CNC machine tools, characterized in that: It includes a hardware layer, a system layer, a functional module and a system interface. The hardware layer includes a server, an industrial computer, a barcode scanner, a tool identification device, a tool presetter and a tool setting instrument; the tool presetter is used to measure the geometric parameters and wear of the tool, the tool identification device is used to identify the tool information, the tool setting instrument is used to measure the actual position of the tool on the machine tool, the barcode scanner is used to scan the tool barcode, and the industrial computer and server are used for data processing and storage; the system layer includes a tool management unit, a database management unit, a data acquisition and monitoring unit and a manufacturing execution system interface, and the tool management unit is used to implement the tool The system has the functions of daily management and scheduling of tools, the database management unit is used to store and manage various data of tools, the data acquisition and monitoring unit is used to collect and monitor the operating status of machine tools and tools in real time, and the manufacturing execution system interface is used to interact with the manufacturing execution system of the enterprise; the system interface includes tool query and statistics, system settings and maintenance, and system configuration and customization function interfaces, and the functional modules include tool basic data management module, tool inventory management module, tool life management module, tool circulation management module, tool wear monitoring and compensation module, tool procurement plan management module, and tool performance parameter management module.

2. The CNC machine tool management system according to claim 1, characterized in that: The tool basic data management module is used to enter and manage the basic information of the tool, including the tool number, type, specification, material, manufacturer, service life and tool picture, and generate a unique QR code or RFID tag for each tool; the tool inventory management module is used to manage the warehousing, outbound and inventory query of the tool, including recording the warehousing time, quantity, supplier, outbound time, quantity, and receiving personnel of the tool, as well as real-time query of the inventory quantity and status of the tool, and issuing an early warning signal according to the set safety inventory threshold; the tool life management module is used to monitor the life of the tool, by collecting the operation data of the machine tool and the usage data of the tool, combining the tool wear model to calculate the remaining life of the tool, and issuing an early warning signal when the remaining life reaches the set early warning value, and at the same time comprehensively monitors the service life of the tool. The tool circulation management module is used to track the circulation process of the tool, including the use and return, installation and removal of the tool, record the circulation of the tool between the warehouse, workshop and machine tool, and generate a tool circulation trajectory diagram; the tool wear monitoring and compensation module is used to monitor the wear degree of the tool, send out an alarm signal when the wear reaches a certain degree, and calculate the compensation value of the tool according to the actual size and wear of the tool measured by the tool setting instrument, and write the compensation value into the CNC system for tool compensation; the tool procurement plan management module is used to predict the demand for tools, generate tool procurement application forms, approve procurement applications and execute procurement orders, and manage supplier information; the tool performance parameter management module is used to set the cutting parameters of the tool, manage the tool wear model, and perform performance testing and evaluation on the tool.

3. The CNC machine tool management system according to claim 2, characterized in that: The tool identification device is an RFID reader / writer, which can read and write the RFID tag information of the tool to achieve rapid identification and tracking of the tool.

4. The tool management system for CNC machine tools according to claim 3, characterized in that: The wear model in the tool life management module is established according to the type, material and processing conditions of the tool, and the parameters of the wear model are optimized by collecting and analyzing the actual use data of the tool.

5. The tool management system for CNC machine tools according to claim 4, characterized in that: The demand forecast in the tool procurement plan management module uses statistical methods and machine learning algorithms to predict the demand for tools in the future based on the tool usage history, inventory levels, and production plan factors.

6. The tool management system for CNC machine tools according to claim 5, characterized in that: The tool query and statistics function of the system interface provides a variety of query methods, including querying tool information by tool number, type, specification, and manufacturer, and generating tool usage frequency reports and tool inventory turnover rate reports.

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