Methodology for the control of the volume of material removal in the plateau honing process

Author

Coba, M.; Buj, I.; Joan Vivancos-Calvet

Type of activity

Presentation of work at congresses

Name of edition

International Mechanical Engineering Congress and Exposition 2018

Date of publication

2018

Presentation's date

2018

Abstract

A methodology is presented to quantify the material removal process during the finishing honing stage of the plateau-honing. The Abbott-Firestone curve represents the roughness heights as a function of the percentage of material. The area under the curve is proportional to the volume of material along the surface. If the Abbott-Firestone curve of the base honing is compared to the Abbott-Firestone curve of the plateau finish honing, the difference in areas between the curves will be proportional...

A methodology is presented to quantify the material removal process during the finishing honing stage of the plateau-honing. The Abbott-Firestone curve represents the roughness heights as a function of the percentage of material. The area under the curve is proportional to the volume of material along the surface. If the Abbott-Firestone curve of the base honing is compared to the Abbott-Firestone curve of the plateau finish honing, the difference in areas between the curves will be proportional to the material removed during the finishing process. This difference in areas, in the case of plateau-honing, will be related to the value of the Rmq parameter of the material probability curve, which indicates the percentage of material corresponding to the transition zone between plateaus and valleys, corresponding to the height where the plateau are located and therefore related to the height to be lowered to the peaks of the base roughness to obtain the plateaus. Defining it from the point of view of the machining process of the surface to be obtained, this difference in areas is proportional to the volume of material that needs to be removed in the finishing honing. It will be critical to determine the number of passes required to remove the material to be started, determined from the difference in areas of the corresponding Abbott-Firestone curves, and to ensure that the plateau zones are at the height of the desired roughness profile corresponding to the Rmq, and that the valleys of the base roughness are not completely eliminated. From the difference in areas between the Abbott-Firestone curve of the base honing and the finish honing, the volume of the material to be removed from the inner surface is determined. If you have a model corresponding to the rate of material removed, volume removed per unit time and unit of abrasive stone surface, depending on the parameters of the finishing honing, this rate of material removal is calculated according to the parameters of the process used. By matching the volume of material removed determined from the Abbott-Firestone curves with the volume determined from the material removal rate multiplied by the time and surface area of the abrasive stone, the processing time required to remove the material is determined. If, in addition, from the machine's kinematic conditions and the tool path, the time per pass or tool cycle is calculated, the number of passes can be determined by dividing the total process time by the pass or cycle time. A methodology is developed to determine, from the probability parameters that characterize the desired plateau-honing, the time required for the finishing honing process and the number of passes required.