Hard Turning Versus Grinding

Hard turning is often considered a replacement for grinding operations or as a pre-grinding process.

Article From: 2/14/2013 Production Machining, ,

Hard turning is often considered a replacement for grinding operations or as a pre-grinding process. It is most often performed on post-heat treated parts with surface hardness ranging from 45 HRC to 68 HRC or higher. Grinding, however, achieves higher tolerances than hard turning, but in cases where grinding can be replaced with hard turning, there are numerous benefits.

Hard turning’s benefits include shorter cycle times and part loading and unloading times as well as chip production that can be recycled and better energy efficiency. Turning centers cost less than precision grinders and provide a range of processes. They also require less tooling inventory. 

Although there is a small learning curve that goes along with hard turning, the fundamental principles follow those of the same turning operations that are commonly performed in shops today. This gives it an advantage over grinding, which requires specific knowledge and experience that not all machinists possess.

Since parts can typically be finished in a single chucking, hard turned parts often show superior concentricity and perpendicularity characteristics to their ground counterparts.
Read more about hard turning’s benefits by reading “Hard Turning as an Alternative to Grinding,” "Getting the Most Out of Hard Turning” and “Success Factors for Hard Turning.”
Combining Hard Turning and Grinding” is another interesting read.
 

Comments are reviewed by moderators before they appear to ensure they meet Modern Machine Shop’s submission guidelines.
blog comments powered by Disqus
LEARN MORE

Editor's Picks

Getting the Most Out of Hard Turning

Traditionally, production of most parts made from hard or hardened materials, defined as those at or...

Combining Hard Turning and Grinding

A combination machine that is capable of both turning and grinding work in a single setup might prov...

Hard Turning as an Alternative to Grinding

Hard turning can be a cost effective alternative for shops looking to streamline part processing.

Success Factors for Hard Turning

A rigid machine and hard cutting edge are the beginning. Other considerations relate to system rigid...

MMS ONLINE
Channel Partners
  • Techspex