Stability charts with large curve-flute end-mills for thin-walled workpieces

2018 ◽  
Vol 22 (4) ◽  
pp. 585-603 ◽  
Author(s):  
Gorka Urbikain Pelayo ◽  
Luis López De La Calle
Keyword(s):  
End Mills ◽  
Thin Walled ◽  
Large Curve

scholarly journals Influence of End Mill Helix Angle on Surface Quality of Aluminium Thin-Walled Parts

2018 ◽  
Vol 26 (42) ◽  
pp. 177-188
Author(s):  
Ivan Buranský ◽  
Matej Bračík ◽  
Vladimír Šimna
Keyword(s):  
Surface Quality ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Helix Angle ◽  
End Mill ◽  
Cnc Machine ◽  
End Mills ◽  
Thin Walled ◽  
Cutting Speeds

Abstract This paper deals with the influence of the end mill helix angle on the flatness and surface quality of aluminium (EN AW 6082) thin-walled parts. The three teeth solid end mills of 12 mm diameter with same and different helix angle of third tooth were designed. The tests were performed using the HSC 105 linear CNC machine and following cutting parameters: cutting speeds (800, 100 and 1200 m.min−1), feed per tooth (0.12 mm), cutting depth (for roughing 10 mm and for finishing 5 mm). Evaluation of surface quality of the processed thin-walled parts shows that the helix angle of the end mills has a significant influence on the surface quality of the thin-walled parts. The best results were obtained in the case of end mill with different 35° helix angle of third tooth and cutting speed 1000 m.min−1.

Effects of Helix Angle on Cutting Performance for Machining Thin-Wall Aerospace Monolithic Component

2014 ◽  
Vol 699 ◽  
pp. 3-8 ◽  
Author(s):  
Abu Bakar Mohd Hadzley ◽  
Mohamad Raffi Nurul Fatin ◽  
Raja Izamshah ◽  
Ahmad Siti Sarah ◽  
Mohd Shahir Kasim ◽  
...  
Keyword(s):  
Helix Angle ◽  
Wall Structure ◽  
Thin Wall ◽  
End Mill ◽  
Workpiece Material ◽  
Dimensional Error ◽  
End Mills ◽  
Thin Walled ◽  
The Right ◽  
Monolithic Component

The thin-walled component is mostly used in the aerospace industry. During machining the thin-walled components, deflection of wall occurs and causes the surface dimensional error. This paper focuses on the effect of end mill helix angle on the surface dimensional error and surface roughness when machining thin wall structure. End mills uncoated carbide were fabricated with a difference helix angle which are 25°, 30°, 35°, 40° and 45°. The results show, helix angle 35° produce smaller surface dimensional error and smoothest followed by 40°, 45°, 30° and 25°. The smaller helix angle provided high cutting force that causes more surface dimensional error due to chatter and reduction of contact time when then end mill engage with the workpiece material. Results from this research help to guide the machinist to machine thin-wall component with the right cutting tool.

Simulation of thin-walled profiles using user components

2019 ◽  
Author(s):  
Natalia Dmitrievna Korsun ◽  
Daria Anatolievna Prostakishina
Keyword(s):  
Thin Walled

Pull-Out Performance of T-Stub End Plate Connected To Concrete Filled Thin-Walled Steel Tube (CFTST) using Lindapter Hollo-Bolts

2018 ◽  
Vol 15 (1) ◽  
pp. 59
Author(s):  
NAZRUL AZMI AHMAD ZAMRI ◽  
CLOTILDA PETRUS ◽  
AZMI IBRAHIM ◽  
HANIZAH AB HAMID
Keyword(s):  
Limit Load ◽  
Steel Tube ◽  
Limit States ◽  
End Plate ◽  
Pull Out ◽  
Pullout Load ◽  
Thin Walled ◽  
Stub End ◽  
Concrete Filled Steel Tubes ◽  
Ultimate Limit

The application of concrete filled steel tubes (CFSTs) as composite members has widely been used around the world and is becoming popular day by day for structural application especially in earthquake regions. This paper indicates that an experimental study was conducted to comprehend the behaviour of T-stub end plates connected to concrete filled thin-walled steel tube (CFTST) with different types of bolts and are subjected to pullout load. The bolts used are normal type bolt M20 grade 8.8 and Lindapter Hollo-bolt HB16 and HB20. A series of 10 mm thick T-stub end plates were fastened to 2 mm CFTST of 200 mm x 200 mm in cross-section. All of the specimens were subjected to monotonic pull-out load until failure. Based on test results, the Lidapter Hollo-bolts showed better performance compare to normal bolts. The highest ultimate limit load for T-stub end plate fasten with Lindapter Hollo-bolt is four times higher than with normal bolt although all end plates show similar behaviour and failure mode patterns. It can be concluded that T-stub end plate with Lindapter Hollo-bolt shows a better performance in the service limit and ultimate limit states according to the regulations in the design codes.

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