Development of computer aided analysis system for

2022-10-23
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Development of computer-aided analysis system for tool damage form (Part 1)

Introduction

cutting is one of the most widely used machining methods in machining. At present, cutting is still the final formation of parts, and the experimental machine is an indispensable and important detector. There are two ways of tool damage in cutting process: wear and damage

tool wear is caused by strong friction in the chip contact area of the workpiece tool, causing the material on the tool surface (front and rear tool surfaces) to be gradually taken away by chips or workpiece. The wear forms of the tool include front tool surface wear (crescent wear), rear tool surface wear, boundary wear, tool tip wear, etc. The damage of cutting tools is caused by improper design, manufacture and use of cutting tools or the impact of cutting forces on cutting tools (especially some brittle tool materials such as ceramic tools). The damage of cutting tools can be divided into early and late damage, including edge collapse, peeling, fracture and crack. The wear and damage of cutting tools will affect the machining accuracy of parts and the quality of machined surfaces. In serious cases, it will also cause cutting chatter, damage machine tools, cutting tools and workpieces, affect the efficiency and quality of machining, and increase production costs. Therefore, it is of great practical significance to analyze the causes of tool damage and take corresponding measures to avoid excessive wear and damage of tools

tool wear and damage are caused by mechanical friction, bonding, edge collapse, breakage and plastic deformation under the action of cutting force and cutting temperature. The causes are very complex and are the comprehensive results of mechanical, thermal and chemical effects. The diversity of tool damage forms and the complexity of causes make it difficult for people to analyze the causes of different tool damage forms and put forward corresponding solutions. The development of computer and database technology makes it possible to establish a computer-aided analysis system for tool damage forms. The computer-aided analysis system of tool damage forms applies computer and database technology to collect the forms and causes of tool damage in various cutting processes such as ordinary turning, thread turning, milling, drilling, etc., and can obtain text and graphic data, and can add, delete, modify and other database operations; According to the form of tool damage, we can quickly retrieve the cause of tool damage, and recommend solutions. Many listed companies are constantly expanding their production capacity to digest order schemes or improvement measures

2 structural design of the system

data structure

tool damage form the structure of each data in the computer-aided analysis system database includes:

tool damage form number (ID)

tool damage type (type)

tool damage form result

tool damage form reason

solution

Help enterprises clarify development ideas

tool damage form image access path (directory)

database structure design

database structure design is the key to whether the database system can run efficiently and correctly. The design of database structure should avoid redundancy and inconsistency, and provide convenience for the design of application programs. According to different processing methods, the tool damage form database system currently designs and establishes the following four sub databases:

beam displacement 898mm, vertical experimental space 1067mm) If it is an elastomer experiment, the beam displacement and vertical experimental space will be required to be 1 point higher The specific situation needs to determine the

General turning tool damage library according to the experimental requirements

thread turning tool damage library

milling tool damage library

drilling tool damage library

add sub libraries of other machining processes as needed

3 functional design of the system

Figure 1 module diagram of computer-aided analysis system for tool damage form

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