Dear Sir/Madam,
I want to perform the evaluation of Surface roughness in longitudinal turning of Titanium with an uncoated carbide (WC/Co) tool. I have chosen cutting speed (V), feed (f) and depth of cut (d) as control parameters with each three levels (-1,0,+1). I found from studying research papers the following experimentation patterns:
- Making the whole length of the workpiece into sections with each section 20-30 mm and performing the trials on each section with a new set of parameter levels and a new cutting tool edge. Later performing the measurement.
- Machining the whole length of the workpiece with one set of parameter levels e.g. V (-1), f (-1), d (-1) with a new cutting edge and measuring with talysurf. Later performing turning on the earlier machined surface with the next set e.g. V (-1), f (0), d (+1) with a new cutting edge for the whole length and perform measurement with talysurf.
I request you to please suggest me the better option for turning Titanium material from the above or any other method. Please guide me.
Thanking you,
With due regards,
Vinod.
It seems from your question that this study is on continuous turning of titanium.it is important to fix the limit of VBavg or VBmax (Flank wear) as control parameter that means at what value of flank wear in your study you are stopping the experiments even you can fix the value of surface roughness as control parameter along with flank wear for stopping the experiments. Then it is important to decide that how many sample you are turning for one combination of variables at least two experiments must be completed for one combination of variables and then take the average of surface roughness value at the end of experiments.
You can refer some of our work related to turning:
Performance evaluation of CBN, coated carbide, cryogenically treated uncoated/coated carbide inserts in finish-turning of hardened steel
Design optimization of cutting conditions and analysis of their effect on tool wear and surface roughness during hard turning of AISI-H11 steel with a coated—mixed ceramic tool
Finish Hard Turning of Continuous and Interrupted Surfaces with Cubic Boron Nitride (CBN) and Coated Carbide Tools
Dear Sir. Three questions, please.
You have a CNC or conventional lathe?
Which is the diameter of the Ti bar?
Which in the maximum number of rpm of your lathe?
From my point of view, the first option is better because you could economize material.
What about the point radius of the insert?
Hi,
I agree with previous comments. You should consider machining length as critical because of the tool wear. In the second case, you could identify also the influence of the machined length because of tool wear (I don't know the length of the bar). You should measure surface roughness at different sections in this case but it's convenient to relate the measures to tool wear in some way.
Regards
Diego
- Badges
- Science topic
- Similar topics
- Biological Science
- Histology
- Sectioning