Complex surfaces such as helical ones are commonly used in machinery. Such surfaces can be obtained by various machining processes, one of these processes being thread whirling. The influence of machining conditions needs to be better understood to develop a more precise prediction of the specific resulting errors involved in thread whirling. This paper firstly presents the theoretical

To physique the perspective, a survey of the pertinent literature on the turning of hardened materials is presented here. Liew et al. [] optimized the machining cutting parameters in turning of AISI D2 steel using rhombic-D-type carbide inserts with 55° included angle as a cutting tool and nanofluid as a cutting fluid.They suggested a cutting speed (C s) of 200 m/min for superior surface finish.

Use sharp carbide mills, replace them often, and keep the flute count down, i.e. 2 instead of 4, and get the rpm as high as your machine can allow. Use a fairly 

Five different brass rod alloys readily maintained the high-speed machining parameters shown below on a V55 Makino CNC Machining Center with a 20,000 RPM 

When maximum speed of the machine spindle less than value of recommended milling conditions, adjust conditions by calculation as follows.

Milling Dia Feed Per tooth SFM RPM IPM SFM RPM IPM SFM RPM IPM 0.125 .0005 2000 61,120 61.12 2000 61,120 91.68 2000 61,120 122.24 0.250 .0010 2000 30,560 61.12 2000 30,560 91.68 2000 30,560 122.24 0.375 .0015 2000 20,373 61.12 2000 20,373 91.68 2000 20,373 122.24

CKD6150H Lathe-Machining Center. Cutting speed (m/min). 50. Cutting tool. PVD-coated carbide insert (TiAlN). Workpiece material. OFHC copper.

Milling Copper Tungsten Tools – Carbide cutters are suggested. Roughing – Feeds of .007″ to .015″ per tooth at speeds of 200 to 400 SFM. Finishing – Feeds of 

Feeds and Speeds are key to tool life, machining time, and surface finish. Cutting Speed Chart giving Surface Speeds for HSS End Mills in SFM. Material. Surface Speed (SFM) Cast Iron - Ductile: 90: Cast Iron - Gray: 100: Copper Alloy - Wrought: 120: Magnesium Alloy: 250: Stainless Steel: 30: Steel - Mild: 110: Steel - Hard

10/14 · Choose the Right Machining Tool Material Because pure copper is very soft, it typically causes high tool wear and poor chip formation during machining. With copper CNC machining, there is also the possibility of formation of built-up edge—which happens when part of the copper workpiece breaks away and is pressure welded to the cutting tool, causing poor

2/28 · 3. Use a 1/2" endmill, much thicker and harder to break. (then probably can cut deeper then .03) 4. Transmission fluid & WD40 > Kool-mist. In fact Kool-mist was the greatest