A Tool And Die Heat Treatment Shop, Heat Treatment Process Of The Automatic Control System Hardware Design

Tool occupies a very important position in the basic industry, its manufacture and application is a characteristic of a nation industrial level. Nowadays, tool is used mostly and widely in metallurgicaL electric and machine manufacture industries and so on. However, with the development of the national economy, more quality and specification and longer service of tool are required. As a result, most people are concerned about how to improve the performance and quality of tool, such as selecting sound material improving heat treatment equipment and procedure and ameliorating machine processing. From the point view of the current condition in most of our nation抯 tool heat treatment workshop~ the main effect factors of tool heat treatment quality are poor means of process parameters control mostly under manual-controlled stages obvious effect by man-caused factors, high control error and unstable quality. Although the furnace temperature of some workshop is controlled by separate microcomputer~ it is not reported that all furnaces in a workshop are integrate controlled. On the base of the fact, the Heat Treatment Process Auto-control System Hardware Design of Tool Heat Treatment Workshop is proposed. In this papers an integrated hardware system of tool heat treatment process control of workshop level is put forward, the system with corresponding software system can concentrative control all kinds of heat treatment equipments (not localizing in one workshop) such as bath furnaces and box furnaces in a workshop center control-room. Not only the automation degree of single equipment is raised, but the automation degree of the whole workshop is also raised. It has an important significance for unearthing the potentiality and the raising the efficiency of the whole workshop equipments. This article focus on the unit choices and designs of the whole workshop such as data collection of procedure parameters analog-digital converters digital-to-analog converter and actuator. The designs of interface electric circuit between those units and between those with CPU are also studied. According to the conditions of selective workshop there are totaled 32-line-input and 18-line-output for the whole system. The system can be extended only by correctively adding correspondence equipments to control more lines under considering leaving more interface, which makes it more flexible and universal. In a conclusions the system is worth of generalization and application in a workshop.