Analysis of Sheet Metal Tapping Screw Fabrication Using a Finite Element Method

Abstract

Abstract:The malformation of sheet metal tapping screw threads in the screw threading process increases the cost of screw threading dies and their maintenance. Die factories do not reveal their screw threading die design techniques, so production and maintenance processes are established by trial-and-error or worker experience and passing down such techniques and documenting quality control is difficult. In this study, screw thread forming design and process analysis were carried out by combining computer-aided design software with computer-aided metal forming analysis software. Simulation results were verified in an actual forming process. The sheet metal tapping screw forging size error was less than 0.90%, except at a sharp angle, which was associated with an error of 3.075%, thereby demonstrating the accuracy of the simulated forming process. The numerical analysis process can be utilized to shorten forming development time; to reduce the number of die tests, and to improve product quality and die service life, reducing the cost of development and promoting the overall competitiveness of the company.

A Numerical Simulation of Meshes Mending Used in the Three-dimensional Porthole Die Extrusion of Thin Wall Profiles

“…1 shows the transparent three-dimensional chart of the die for successive extrusion processing, including a billet, ram, container, and die. The figure is of a single element that is first transformed into an STL file and then DEFORM-3D forming software is used [14,15]. Fig.…”

Finite Element Method and Cut Bar Method-Based Comparison Under 150°, 175° and 310 °C for an Aluminium Bar

“…It was made a model by aided computer design under dimensions illustrated in Figure 3, and due to its symmetry, a 2D model was done and another with azimuthal symmetry [10]. The temperature of the hot source (HST) was extracted from the data of experimental results; the same for the cold source temperature (CST) which were introduced as boundary conditions in the finite element model, the properties of the material, in the case copper, being a reference material, Equation (3) was used λ Cu = 416.3 − 0.05904T + 7.087 × 10 7 /T 3 (3) Equation ( 3) was obtained from [9] because in the standard are published thermal conductivity of some materials considered such as meter bar reference materials for the cut bar method.…”

Investigation of the process of thread extrusion using the ultrasound

“…Article [16] reports a procedure to study the process of obtaining threaded surfaces of the mounting products by the method of plastic deformation. The method of finite elements was employed for this purpose.…”

“…Average rate of deformation over the period of oscillations will be determined as a ratio of the residual deformation (16) to the period of oscillations:…”