Non-Contact Axial Work piece Diameter Size Measuring System

Abstract

Listen

Translate article

This article designs a non-contact axial work piece diameter size measuring system. It uses high accuracy laser sensor and precision linear module. This paper introduced working principle of the system, mechanical structure and measuring range. The characteristics include non-contact, high precision, automatic scanning and measuring range can be adjusted easily. The system is simple to adjust, easy to operate, especially suitable for plant operations or inspection as an important way of enterprise internal quality control. In addition, non-contact measurement is also significantly enhance the adaptability to environment and suitable for continuous measurement of work piece in production line. Introduction In the mechanical parts production process, outer diameter of parts measurement plays an important role. Quickly and accurately measure the main parameters of components can short the production cycle, realize automatic production and improve production efficiency . Non-contact measuring system based on optical methods, it breaks people’s traditional thinking mode which is contact directly with objects when measuring objects. It has important theoretical significance . Manual inspection can easily cause visual fatigue, so detection efficiency is low and precision is low and range of applications is narrow [3]. The working principle of measuring system Figure 1-1 is a tested part which shows that the dimension measure is so many. Some sizes are measured difficulty even can’t be measured directly. And traditional measurement wastes time, so non-contact measuring system was designed. Fig.1-1 a tested part Automatic measurement system uses servo motor to drive precision linear module and slider orientation. Two sets of CCD laser sensors are installed on the slider. Laser sensor scans outer outline of the workpiece continuously when move to the desired location. The measured data are processed by IPC. It calculates the main size parameters of outside diameter. It can real-time display measurement results, save and print the test data. If the size is beyond the measurement scope of the two groups of laser sensor, the linear module can be adjusted the distance of installation. It can enlarge the measuring range of system and meet the needs of the measurement. The working principle of measuring system is shown in figure 1-2: International Conference on Education Technology, Management and Humanities Science (ETMHS 2015) © 2015. The authors Published by Atlantis Press 909 Fig. 1-2 Working principle of measurement system Measuring system Mechanical structure. Mechanical structure adopts servo motor can control the speed and position accurately. It is low noise and no step running conditions. In closed-loop system, the signal is transmitted to the system at any time, and movement is adjusted by feedback signal of the system at the same time. Precision linear motion module runs stability, and has high positioning accuracy and no return clearance. These are to further improve the accuracy of the motion system. Two-dimensional figure of the mechanical structure is shown in the Fig.2-1: Fig.2-1 Two-dimensional figure of the mechanical structure 01. Contact button 02.cut-off button 03.servo motor 04. Coupler 05.power light 06.alarm indicator lamp 07.qualified indicator light 08.unqualified indicator light 09.ball screw 10.motion components 11. CCD sensor 12.left hand door 13.part 14.reset button 15.scram button 16.activate button 17.big cabinet 18.foot rest 19.line hole(big cabinet) 20.Truckle 21.line hole(distribution box) 22.mirror door servo motor IPC display