Burnishing tools have been around for over 100 years, but many manufacturing engineers do not realize how much time and money it could save them. Those manufacturing engineers probably use grinding instead of burnishing. Grinding is a secondary operation and requires a manufacturer to transfer the part to a new machine before grinding begins. Grinding is an abrasive process and produces small chips or swarf that require disposal, whereas burnishing is a “chipless” machining method that does not produce any by-product. Rather, it compresses the peaks of a metal surface, creating a dense, uniform surface. Burnishing also increases surface hardness from 50% to 100%, all while producing a 4 to 8 Ra microinch surface finish in one pass.
Here are three times burnishing tools saved our customers time and money:
Gearbox Drive Shaft Case Study
We helped this customer achieve a surface finish of 12-14 Ra microinch while allowing the part to be finished on one machine. This saved 30 minutes per part and freed up the grinding machine for other operations, which resulted in huge financial savings.
Burnishing Impellor Motor Shaft Success Story
This customer replaced grinding with carbide burnishing and saved over $47 per part. The customer even saved extra on transportation costs, since they did not need to sub-contract their grinding process to another company.
Connectors Case Study
Our help allowed this customer to avoid using sub-contracting to finish their parts. We also assisted in making their manufacturing process more stable and repeatable when we made our on-site visit.
In conclusion, burnishing tools have been around for many years, but many manufacturing engineers are unaware that burnishing can be a better alternative to grinding. Burnishing saves time, money, and could even eliminate the need for expensive subcontracting, all while creating a harder surface with no by-product to clean up.