Centerless Grinder Uses Single-Disk CVD Roller with CNC Dressing

According to the company, the centerless grinding process for manufacturing a fuel injector nozzle valve can sometimes incorporate as many as 20 critical dimensions, all of which need to be centerless ground.

Glebar’s GT 610 CNC centerless grinder is designed to improve the development process of fuel injector nozzle valves, said to reduce tooling costs, lower inventory levels and increase integration of prototyping technology for new components. According to the company, the centerless grinding process for manufacturing a fuel injector nozzle valve can sometimes incorporate as many as 20 critical dimensions, all of which need to be centerless ground. The company says Glebar’s process increases efficiency by using a single disk CVD dress roller as part of its grinding system with the full CNC work wheel dressing.

The system runs on the company’s GT 610 CNC machine platform for sub-micron positional accuracy, enabling intricate forms to be dressed into the work wheel to generate critical dimensions required of the fuel injector nozzle. By using a single disk roller, multiple profiles can be generated using one roller, eliminating the need for a reverse-plated roller for each profile. According to the company, lead times for fuel injector nozzle valves can take as much as 16 weeks to complete due to lead times of a reverse-plated dressing wheel that can be an accurate but expensive tooling cost. While using a reverse-plated wheel is often ideal, the company says using a single disk CVD roller with CNC dressing can expedite a proof of concept and reduce development costs.