Industry:Machine parts manufacturing
Department:Production division

Hand-Finishing Stage Posed Obstacle to Boosting Production

We look at a solution that enabled one supplier to automate a process that previously depended on manual work and labor-intensive methods.

Background

Amidst a boom in the industrial equipment market, the supplier featured in this case study was asked by an equipment manufacturer to increase production. Although the supplier promptly ordered all processes to increase production, the finishing process for surface roughness of internal bores was creating a bottleneck that blocked attainment of an increase in production.

Problem

Manpower Reliant Finishing Process Root of Problems—Grinding Not Solution Either

The supplier performed internal bore surface finishing of industrial equipment components by hand. Taking around ten minutes per part, this process had given rise to a chronic staff shortage.

An employee from the production division recalled:
“In order to increase production, we were forced to reassign employees from administrative roles, have operators come in on days off, and otherwise ‘throw human capital’ at the problem. This further increased the workload on operators, and there were also concerns that quality could become inconsistent.”

Believing that the process needed to be automated as soon as possible to reduce processing times and operator workloads, the employee consulted a grinding machine manufacturer. The manufacturer proposed a grinding-machine based solution and the employee immediately conducted a trial, but it did not yield the desired results.

“Our parts have deep, narrow bores that cannot be machined consistently on a grinding machine. Surface finishing is crucial to ensure product life and mechanical efficiency. As things stood, we were in no position to increase production,” explained the employee.

While the employee and others in the production division once again searched for information, a solution eluded them, and they had half-given up on automating the process.

Summary of the problem

  • Internal bore surface finishing was performed manually, a process that required ten minutes per part.

  • Increasing staffing was deemed necessary to increase production, but concerns arose about the workload on operators and consistency of quality.

  • The supplier considered automating the process with a grinding machine, but abandoned this idea after finding that the machine could not reliably machine deep, narrow bores.

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