Development Of Technological Process Of Metal Machining From Stamping On 5-AXIS CNC Milling Machine
A. V. Detkin, O. V. Arkhipova, and S. A. Sitnikov from Moscow Aviation Institute (National Research University), Russia, describe the development of a technological process for producing compressor working blades with minimal machining allowance using a 5-axis CNC machine, aimed at reducing the need for multiple units of equipment, and analysed mathematically using 3D scanning.
Introduction
Blades of water engines used in civil engineering have complex geometric shapes, which cause
labour-intensive technological process for production, and high manufacturing costs. When operating
a turbine, blades are in an aggressive environment. In addition to prolonged mechanical load, the
blades are also subjected to prolonged temperature load, corrosion, and erosion. High-alloy stainless
steels are used to ensure the operation of blades under such intense conditions. The complexity of
machining materials by cutting is primarily due to their mechanical properties, so to increase the
productivity of machining, castings or forgings instead of bars are used as blanks for subsequent
machining.
The choice of such blanks increases the material use rate many times, reduces the machining time,
and cutting tools consumption. Simultaneously, due to the complex geometric shape of the
workpiece, there is a need for special tooling for basing and fixation of the workpiece in the
manufacturing process, which in turn complicates the technological process.
