Ocena chropowatości powierzchni oraz dokładności wymiarowo-kształtowej ceramiki Al₂O₃ w stanie utwardzonym po frezowaniu

Aleksander Przesmycki,Rafał Świercz,Maciej Winiarski,Tomasz Chmielewski,Tadeusz Sałaciński

doi:10.17814/mechanik.2019.12.109

Abstract

The effect of technological parameters of machining on surface roughness, dimensional and shape accuracy in the process of milling Al2O3 ceramics in hardened state was evaluated. The unique properties of ceramic materials cause more and more interest in them in various branches of industry. Ceramics in the hardened state can be processed using unconventional methods and conventional methods while maintaining the appropriate technological parameters. Ceramics cutting tests were carried out in a hardened state (face and shape milling) on a CNC milling machine using PCD tools. Geometric surface structure study and measurements of geometric dimensions were made.

Highlights

IntroductionDue to their unique properties, are used in various industries, such as the electrical, chemical or food industries
Ceramic technical materials, due to their unique properties, are used in various industries, such as the electrical, chemical or food industries
When milling the pyramid-shaped sample, the corner was broken from the PCD plate and the catastrophic blunting of the blade

Summary

Introduction

Due to their unique properties, are used in various industries, such as the electrical, chemical or food industries In the production they fulfill the function of machining material, but are suitable for cutting tools (plates or brushes for removing chips) [1,2,3]. It was decided to attach one PCD plate to the tool and the other plate – with a ground corner – as a counterweight In both cases they were cutting inserts with a polycrystalline diamond corner. In the case of the PCD05 tool, the cutting edge length was 2.4 mm, the effective height of the cutting part was 6.5 mm, while the PCD layer was 0.82 mm thick In the case of the PCD05 tool, the cutting edge length was 2.4 mm, the effective height of the cutting part was 6.5 mm, while the PCD layer was 0.82 mm thick (fig. 3a and b)

Results

Tool number

Nominal dimension

Summary