Dimensional and Geometrical Form Accuracy of Circular Pockets Manufactured for Aluminum, Copper and Steel Materials on CNC Milling Machine Using CMM

Abstract

Dimensional metrology plays an important role in the modern manufacturing technology. Accurate machining technology remains the main focus of global industry, where needs to permanent study for the purpose of improving. Coordinate metrology is an important inspection tool of dimension and geometrical surface form for machined work-piece to provide functionality in quality process. Several factors affect the accuracy and quality of manufactured parts when machined using circular pocket cycles on CNC machining centers. Such accuracy depends to a great extent on work-piece material, the cutting conditions; namely spindle speed, feed rate, depth of cut and the structure of the fixed cycle. The accuracy of dimensional and geometrical form plays a vital function on the required tolerance and fit of manufactured parts to be assembled.This paper studies the influence of those parameters on the accuracy and quality of milled pocket diameter with its roundness. Several specimens made of aluminum, copper and steel metals were pocket milled on a CNC using different cutting conditions. CMM was used to assess the errors in diameter and roundness measurements of machined parts. In despite of scientific advances in machining technology, however there are still clear deviations in the measurement results according to choice of the cutting condition, especially when change the type of work-piece material. Monitoring suitable validiation method for a typical manufacturing machining is achieved accurately. Moreover, expanded uncertainty in measurement has been estimated using statistical repeatability analysis and most effective experimental parameters.

The Effect of the Machining Strategy on the Surface Accuracy When Milling with a Ball End Cutting Tool of the Aluminum Alloy AlCu4Mg

“…Software Calypso allows for of various geometric deviations, such as straightness, flatness, and cyl • Spiral-The spiral toolpath is first created as a two-dimensional toolpath and then projected onto the 3D model. The Z-position of the tool is calculated during the projection [43]. The schematic diagram illustrating the constant stepover strategy is shown in Figure 5.…”

“…For these options, the appropriate geometry mu The schematic diagram illustrating the constant stepover strategy is sh 4; • Spiral-The spiral toolpath is first created as a two-dimensional tool projected onto the 3D model. The Z-position of the tool is calculated d jection [43]. The schematic diagram illustrating the constant stepov shown in Figure 5.…”

The Role of Smart Technologies to Improve the Utilization of Wood Uses in Engineering Applications: A Review

“…Therefore, it can be said that the use of Balsa wood into 3D design and fabrication of vehicles and aircraft models has been achieved to improve studies the performance of the mechanical dynamic systems (aerodynamic resistance). Thus, it can be proposed to study new criteria related to dimensional accuracy and geometrical properties of machined wood as in metals [16,17].…”

Advancements in Roundness Measurement Parts for Industrial Automation Using Internet of Things Architecture-Based Computer Vision and Image Processing Techniques

“…Coordinate metrology is an essential inspection tool for ensuring quality in machined workpieces. It can analyze the impact of parameters on milled pocket diameter and roundness accuracy using CNC and CMM specimens, address measurement deviations, and estimate uncertainty using statistical repeatability analysis [14]. The measurement of circular sector elements requires appropriate control, which is driven by the increasing demand for complete control of specific geometrical features [15][16][17].…”