Industry:Machine-tool component manufacturing
Department:Production Engineering

Internal Bore Surface Finishing Process Stood in Way of Productivity Increase

New solution stabilizes precision while slashing processing times.

Solution

Summary of the solution

  • Switching to a honing-based internal bore surface finishing process automated compensation for wear on abrasive, ensuring more consistent diametric precision without the intervention of an operator.

  • Processing time was reduced to 30 seconds per unit, enabling components to be mass-produced on a single machine.

  • Advice based on Nissin’s experience and expertise enabled the manufacturer to establish a reliable production setup with a capacity of 25,000 units per month.

Honing-Based Solution Replaces Electroplated Tools after Passing Test with Flying Colors!

The employee attended an industry gathering at which he told an acquaintance from another company about the internal bore surface finishing issue. The acquaintance put him in touch with Nissin Manufacturing, which is an all-round honing machine supplier. The employee immediately contacted Nissin, and a salesperson quickly paid the manufacturer a visit.

The salesperson proposed the manufacturer switch from its existing internal bore surface finishing process, which relied on electroplated grinding tools, to a honing-based process. Nissin’s honing machines perform stone expansion and wear compensation automatically, ensuring consistent diameters, and guaranteeing process performance capability management criteria are met.

Moreover, the stones’ self-sharpening ensured stable grinding performance, resulting in a consistent surface roughness. These features allow the workpiece to be set and processed automatically, delivering consistent precise results.

The Nissin representative also explained that the built-in process gauge eliminated the need for operators to perform dimensional adjustments. This strongly impressed the employee, and he decided he would like to see the machine in action for himself and see just how well it performed. He asked Nissin manufacturing to perform a processing test with one of the manufacturer’s components.

“The test results were dramatic, halving machining time to a mere 30 seconds per unit. It delivered consistent results, the precision of hole diameter, and cylindricity and surface roughness significantly improved. The machine’s ease-of-operation was also a plus,” said the employee.

Satisfied with the machine’s performance in the processing test, the employee and the Production Engineering Department proposed to management that it purchase a Nissin honing machine. The proposal was approved, and the manufacturer purchased a G25-AR1 (fully automatic single-spindle honing machine with loader/unloader).

“This machine will enable us to achieve the 25,000 units per month production capacity required by our client. Ultimately, this challenge resulted in us receiving very useful advice based on Nissin’s specialized knowledge and extensive experience, which was a significant gain for us,” said the employee.

The manufacturer is now considering full automation of all processes to combat challenges posed by future production increases and personnel shortages.