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The current scenario is product development process adopts the concept of concurrent engineering and uses the technologies CAD, CAE, rapid prototyping and reverse engineering. Reverse engineering is used when the original product design document has been lost or never existed, unable to create the complex shapes accurately. It also used to edit and tailor base model geometry for improved functionality or new application. Reverse engineering process involves four stages viz. scanning the object using the reverse engineering scanner to collect the information from the reference object, then the noises present in the point cloud obtained from the scanning are removed, after the removal of noisy point cloud cad model is produced, at last reverse engineering model is manufactured using CNC machine. The accuracy (or) obtaining the correct dimension depends on procedures adopted in all four steps of reverse engineering. There are two types of scanning process available in reverse engineering: one is contact type and another is non-contact type. The contact type scanner has some advantages compared to non-contact type scanner.It can able to scan shiny and transparent material, less able to measure deep slots, when compared to non-contact type scanner. It also has some limitations like Slow data collection, Less accuracy compared to noncontact type scanner. This paper presents the methodology to predict the error under various scanning conditions of contact type scanner. MDX-20 contact type scanner which is a low cost and low accuracy scanner has been used for experimentation and error compensation relationship is developed in-terms of scanning parameters of pitch on x-axis, & pitch on y-axis import software’s. In this paper the reference object with features like (hole, fillet, chamfer, cylinder, square gauge, triangular pocket, square pocket) scanned at first with different parameter setting to identifies the error under each setting associates with selected modeling software’s. Then a multi-regression model is formed for each feature to predict and compensate the error at CAD modeling stage. This will facilitates to use this low cost contact type scanner as high accurate scanner as compared to latest high cost scanner

Optimization Of Error Compensation For Contact Type Ronald Mdx-20 Scanner In Reverse Engineering