Investigating the CNC milling machine parameters and machining tool specifications on surface roughness of wooden products

Document Type : Original Article

Authors

Saeed Yaghoubi

Farshad Rabiei

Department of Mechanical Engineering, Faculty of Engineering, Ilam University, Ilam, Iran.

10.22067/jacsm.2023.81172.1167

Abstract

Today, wooden products are widely spread in the industry of furniture, art boards, wooden dishes, etc. The traditional and manual manufacturing methods of producing these artefacts cannot compete with mechanized production methods, especially computer numerical control (CNC) machines. Therefore, using of these devices is always increasing. Nevertheless, one of the parameters that affect the production speed is the surface roughness, and the workshops have to spend a lot of time on polishing the products. For this reason, in the present research, the effect of machine parameters (feed speed, rotational speed and transverse step) and tool characteristics (diameter, number of cutting edge and type of cutting edge) on surface roughness of beech wood has been investigated. The outcomes demonstrated that cutting tools with two spiral cutting edges have a more favorable surface roughness than cutting tools with a straight cutting edge and one spiral cutting edge, and tools with a straight edge are not suitable for beech wood. It was also observed that by reducing the transverse step from 0.7D to 0.3D, a lower surface roughness is created. By reducing the tool diameter from 6 to 4 and 3 (mm), reducing the feed speed from 60 to 20 (mm/min) and increasing the rotational speed from 15000 to 25000 (rpm), the surface roughness of final product was improved, significantly.

Keywords

CNC Milling

Wooden Products

Cutting Edges Number

Step Over

Feed Speed

Rotational Speed

Subjects

• Machining

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