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I'm trying to find a good dresser unit which can provide more than 8000rpm. Does anyone knows a good system with relative low cost. Thanks in advance. Biffi

Al21, one of the best way to monitor the grinding wheel wear, gap control an breakage is one system which use Acoustic Emission (AE)as principle. In the market there is a lot of comercial systems, but the price usualy is high. In Brasil there is a company called Sensis Automação...

Hi, I'm working with a Viking centerless grinder and I have problems to alighn the diamond rolls axis with the grinding wheel axis. The difference is about 0,8mm. Does anyone knows how to solve this problem, since my diamond roll profile is OK? Thanks

It depends on part lengh, tolerances and how the part is hold in machine.

Not retrofit, but used it. Open CNC's are used when you need to get some information right from the plc command (monitoring the operation). But open CNC is just the name, depending the supplier Fanuc as an exemple, the open archictecture is proprietary and if you need to comunicate with the plc...

I'm working now a days as black belt, and in my opinion to calculate the sigma value of the process, your process must follow a normal distribution and more must be under control. This lead to a good capability calculation. So, depending your data type you can calculate the DPMO and as a result...

the sparkout is a dweel in the grinding cycle to get a round part. It is need due system machine-grinding wheel-part elastic deformation when the gw and part are in contact.

Does anyone has some information, if the CBN grit when in touch in high temperature with niquel alloys degrades due some a chemical reaction? Any tip? Biffi

womble17, Usually single point is not recomended. Wear too fast due the wheel high surface speed . I have some experience with electroplated diamond dresser (rotative) with 2 axis interpolation dressing. It's seams to be simple, but you must choose the right dressing parameters (qd and vd) due...

People, I have some experience in vitrified cbn grinding of niquel base alloys for automotive components. Usually this tool must work with mineral oil, (water based collant wear to fast the cbn grits - some studies in Brazil). Its is good to be applied in Ni alloys, and have advantage in steel...

genagur, i'm using electroplated CBN wheel (single layer) - specification B251. I don't know the concentration (supplier usually don't say it). There no dressing for this kind of wheels. Thanks for the sugestion, I will check if I can finf this paper.

Hi, I'm looking info about any revestiment in coin die for extrusion of superalloys (hot extrusion)to increase the tool life. Increase hardness or reduce friction coeficient. Does anyone knows if it is possible? Please share your experiences. Thanks

I'm working with cilindrical plunge CBN operation, and we achieved bad results in wheel life (less than 50.000parts/wheel). The axial/radial runout is under 0,005mm, straight oil, work material = superalloys (nikel), grit size = B251, stock 2mm, cycle time=6sec, roughness tolerance 2Ra. Does...

prabharamani, I think that you can increase the work speed to reduce the burn marks and also check the type and grit size of your grinding wheel. Usualy roll dressing in centerless grinding trends to close the wheels structure and make the grits to flat. As a result, too hot is generated and...

Hector, I'm working with inconel for some time. Which kind of process are you developing?