This paper presents an efficient and robust algorithm for the geometric determination of swept volumes during the simulation of NC−milling (three-axis machining and five-axis machining). The boundary Ψ of the volume swept by a cutter Φ is represented polygonally by using instantaneous helical motions to exactly determine the line of contact between Φ and Ψ. Applying concepts of differential geo...

Helical milling with the advantages of stable machining process, a well-machined surface quality, etc., is an interest researchers and producers. Machined roughness (arithmetic mean deviation (Ra) maximum height assessed profile (Rz)) power consumption as two main characteristic parameters were studied chosen response factors to evaluate machinability Scots pine helical milling. Input variables...

Purpose: This paper presented a method for generating the toolpaths for the machining of a helical rotor on five-axis machine tool. Design/methodology/approach: The geometry of the helical rotor is designed based on the ruled surfaces. Through the homogeneous coordinate transformation, the cutter location of the flank milling for four-axis machining can be generated. The postprocessor are devel...

The application of variable helical end mills to the milling titanium alloys can suppress regeneration effect during machining process and ensure stability milling. However, due their special geometry, characteristics are also different. In this paper, alloy with a helix mill is taken as research object, force, deeply studied. Firstly, feed per tooth cutting thickness model were established, fo...

We investigate a recently introduced methodology for 5-axis flank computer numerically controlled (CNC) machining, called double-flank milling (Bo et al., 2020). show that screw rotors are well suited this manufacturing approach where the tool possesses tangential contact with material block on two sides, yielding more efficient variant of traditional milling. While tool’s motion is determined ...

Abstract This work reports a comparative study on different hole making methods, namely conventional drilling, peck drilling and helical milling, for Al 2024-T3/Ti-6Al-4V stacks in aircraft applications. The impacts of methods with constant or varied machining parameters across the stacked structures have been investigated. resulting exit burr, surface roughness/microstructural change fatigue b...

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Carbon fiber-reinforced polymer (CFRP) is widely used in various fields due to its excellent properties. However, machining defects such as delamination and burr are still the key issues constraining high-quality hole making on CFRP. This research takes helical milling process make holes CFRP two kinds of cutting conditions (dry jet cold air-assisted cutting) explored. Tool wear, force, delamin...