Eliminate Chatter and Solve Finish Problems
Eliminating chatter is a great way to improve surface finish when performing CNC milling. Okuma's Machining Navi M-i detects chatter and automatically adjusts spindle speed to eliminate chatter, thus improving surface finish. This is a terrific tool for the mold/die industry.
Surface finish problems can be profit killers in the moldmaking shop. One of the most common causes is chatter created by vibration in the CNC machine tool cutting process. This can lead to higher costs, delayed deliveries and even lost orders due to poor quality. In addition, vibration can cause uneven tool wear, resulting in poor surface finish, geometry inconsistencies and reduced tool life.
Chatter is caused by the inherent natural frequency of the cutting tool. It can be triggered by many process conditions: toolholding, cutter tooling, part fixturing and machine conditions. Typically operators try to combat chatter by combining multiple solutions, but some of these may impossible to implement due to part geometries or machine limitations. Fortunately, there is new technology available today that can eliminate chatter from your cutting processes.
Negative stock shutoff can help you make better molds in less time. Here is a clear definition and description of the process. While the concept is fairly simple, the implementation can be challenging.
A look at some of the factors influencing the success of your machining center investment.
Competitive shops need to consider the true capabilities of their VMCs to achieve a high level of accuracy and surface finish.