Here, we report the first study on hole making performance of thermoplastic carbon fibre/polyetherketoneketone (CF/PEKK) composite. Different methods (conventional drilling vs. helical milling) have been compared and effect different feed rates has investigated. The thermal-mechanical interaction resulting damage elucidated for time fibre reinforced thermoplastics (CFRTPs) making. In material s...

To ensure assembly accuracy and efficiency, the holes are made directly on laminated material composed of CFRP Al alloys. However, due to sudden change axial force in transition area with different sequence, a method micro-lifting tool was proposed. First, motion helical milling analyzed. The level values influence quality hole-making determined, such as spindle speed, pitch, preload. response ...

To solve the problem of low efficiency in digital generating machining for producing small or medium batches helical gears, a method to improve with an indexable disk milling cutter is presented this paper. First, mathematical model tooth profile and are established. Second, according spatial free-form envelope theory, overall planning scheme tool path given; relative position transformation ma...

Under most processing conditions, the milling force is expected to be stable and not fluctuate, in order improve quality. This study focuses on analyzing fluctuation characteristics under conditions of different cutter parameters. An original model proposed predict during process a helical-edge cutter. At same time, three related axial cutting depth parameters are determined: uniformity, period...

Conventional drilling has been widely used for making holes in structural materials. However, drawbacks like high cutting forces, poor surface finish, temperatures, excessive tool wear, and undesirable burr formation while magnesium alloys have necessitated the development of alternative hole-making methods. Lately, helical milling process attracted interest facilitating assembly applications. ...

Aiming at the requirements of titanium alloy holes in aircraft industry, 3-DOF cutting stability and surface quality optimization parallel kinematic manipulator (PKM) are studied. The variation natural frequencies with end-effector position PKM is analyzed. force model helical milling based developed, coefficients identified. prediction for on established through a Semi-Discrete method, lobes o...

When machining difficult-to-cut metal materials often used to make sheet forming tools, excessive cutting force jumps break the edge. Therefore, this research developed a system of three neural network models accurately predict maximal forces on edge in helical end milling layered material. The model considers different machinability individual layers multilayer Comparing with linear regression...