abstract
V Belt convey is simple structure, easy fabrication, smooth convey, low price, and can absorb shock buffering and widely used in modern machinery. In the actual use, the precision of v belt size has a great influence on the performance and life. Especially when the V belt taking length for a set of V-belt which makes to use in the meantime consistently, each V-belt takes of the length have to control in a smaller error margin scope. With the V belt use of V belt factory to improve the group with many small and medium-sized factory, the simple type V belt grinding machine in the mode of production and production efficiency is backward, to ensure the accuracy and size of V belt grinding and if the measured by special group, not only are command airplane for increasing length measurement process FeiGong time-consuming, but also increase the cost cannot satisfy the requirements when length to return to grinding process. In this background, development needs a new can online long V belt grinding machine will grow good application prospects.
This paper introduces the V belt length measurement and control system of the grinding machine design process. The V belt grinding machine should have the main features: (1) measure V belt length on-line, length measurement accuracy should achieve, (2) high reliability, 24 hours of continuous grinding without a fault, (3), except with artificial, the process of automatic control with grinding, (4) has the independent length measurement function (its function and special measure of V belt. Command airplane similar According to the requirements of function, the author in the relevant documents and many existing analyses and compares the advantages and disadvantages of the burnish machine length measurement based on the control system, the design scheme and the software design. The grinding machine control system use AT89S51 as control core, use mitsubishi touch screen as man-machine interface and the design of the software use the modularized structure and C language program.
This paper has six chapters. The first chapter is introduction, mainly introduced the V belt length measurement grinding machine is analyzed and the status of the equipment and clear the development trend of the demand for the graduation design content of engineering application background.
The second chapter to the main content is the system function requirement of grinding machine are analyzed in detail, including grinding mill and the mill (are), measurement (maximum deviation, minimum deviation and average), online long, long, sensor zero adjustment, etc. In addition, the second chapter of V belt grinding machine of the length measurement and control panel, such as the hardware structure of a pulley, pressure roller, grinding wheel and the tensioner active part etc. Were introduced, and the analysis of V belt grinding process may influence.
The third chapter of the grinding machine control system hardware, including based on singlechip control board, touch screen, motor and sensor etc, and through the system hardware diagram illustrates the relationship between them.
The fourth chapter of this paper is to the key, this chapter V belt length measurement and control system of the grinding machine software design, including the control program of the main program, part of the procedure, the communication program and touch screen design procedure. The main subroutine: return zero functions, function, measuring functions, function, grinding mill function and reset function etc. Communication program MCU and touch screen is the communications between the program.
The last chapter was closing on the graduation design, the main task completion and harvest are summarized.
Keywords: Length measurement;Grinding;Automatic control system;Serial communication