When the engineer mentioned this issue to a representative of the sales agency that sold them its existing machine tools, the employee said that Nissin Manufacturing might be able to solve the problem and referred him to Nissin. When the engineer contacted Nissin and described the issue, the Nissin representative suggested using honing (grinding) for internal finishing, instead of cutting.
“By using Nissin’s G50-MS2 honing machine, we were able to significantly reduce the time taken to process each set of workpieces. Nissin proposed a dedicated jig solution that was a perfect fit for us, and we now project that we will be able to do away with the need to reposition holders during machining,” according to the engineer.
The engineer was also informed that not only do Nissin honing machines ensure constant bore diameter irrespective of grindstone wear thanks to automatic adjustment, but the grindstones’ self-sharpening properties (as new abrasive particles are continually exposed) also ensure consistent surface roughness. When the engineer said he was nervous about making significant changes to the process, and that it would be difficult to make a decision without seeing how things would actually change, Nissin told him that they were able to perform a processing test.
“Straight away, I sent Nissin samples of workpieces that had undergone fine boring and had them hone these workpieces to our specification. The results of the trial were more than satisfactory in terms of processing time, bore diameters, and surface roughness, thus dispelling all concerns we had about installing a honing machine,” said the engineer.
Based on this outcome, the manufacturer decided to purchase one G50-MS2 honing machine and verify the machine’s performance on internal bore finishing. The machine, equipped with a dedicated jig, successfully reduced processing time per set of workpieces by an average of 83%. Efficiency was further improved by elimination of the need to re-position the workpiece.
“We had concerns about using this machine in the actual process in relation to consumables and maintenance, but Nissin manufactures its own jigs, tools, and grindstones, and was able to provide comprehensive support, which was a great help. Precision component machining is one of Nissin’s main lines of business, and Nissin has extensive knowledge of component machining, so it was reassuring to be able to consult them regarding not only the finishing process but also other processes,” said the engineer.
The manufacturer rated the performance of the first unit of the G50-MS2 highly and has decided to install a second machine to form the backbone of its plans to ramp up production.
