The Quality of Metal Products Made on CNC Machines
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2017, Vol 40, Issue 1
Abstract
Contemporary market must provide products that adapt to customer needs, which requires large investments and long-term employment. Producers have to take care of the buyers’ different way of thinking. The quality of products and services is an important economic indicator. The paper presents studies and research in the field of bending of metal parts (thickness between 1 and 3 mm) on CNC machines. This paper tries to provide answers to the many problems arising in the companies due to the quality of the economic goods. In the technological flow of the achievement of a metal product, bending is very important, the quality and conformity of the product depending on this operation. The paper proposes laborious research and studies on determining the drawings of metal parts with the thickness between 1 and 3 mm, considering that other variables such: the temperature variation during the processes of punching and bending, tool usage, the tolerance between the surfaces of the bending tools, the vibrations of the machines, their usage and the roughness of the sheet metals may influence the quality and precision of the products. The calculation of the drawing (the geometry in plane of the piece) becomes important because it must include the deformation caused by the bending operation. Bending coefficients Kî must compensate for deviations from the final dimensions of the metal parts, because of the many variables that can adversely affect their execution. The bending coefficient Kî is determined by experimental tests and measurements.
Authors and Affiliations
Nela PUŞCAŞ (POPESCU)
Keywords
Related Articles
- EP ID EP574950
- DOI -
- Views 73
- Downloads 0
The Influence of the Steel's Surface Quality on the Electroless Ni-P Coatings
The method of autocatalytic reduction coating assures a precise reproduction of the coated surface. This is an advantage when the support surface has a complex geometry but also becomes a disadvantage because it requires...
Use of Ecological Paradigm in Material Degradation Engineering
The necessity to move from the conventional technical-technological paradigms to the ecological paradigm is perfectly justified. The degradation of materials is defined as a negative phenomenon, whose study should be ext...
Some Aspects about the Refractory Lining Wear in Furnaces
For melting cast iron, carbon steel, copper and copper alloys the quartzite is still one of the most used lining material and the most cost effective as well. The silica lining has to be replaced frequently due to the we...
Mathematical Model Cooling Agglomeration Ferrous in Layer
Mathematical model is based on discretization agglomeration areas layer deposited on very small. The τ Δ cooling time and the elements of space and elements xi time relationship is discretization as volume control. Based...
Chemical and Structural Changes for Bimetallic Materials Obtained by the Welding Process
This paper presents the transformations which take place during the obtaining process of bimetallic materials. As a plating process was used the welding. The added material was a bronze with aluminum complex alloyed with...