Glebar Grinding Machines Combine Operations, Enhance Quality
Glebar’s CS1 Cutoff Machines and TF-9D Thrufeed Grinder reduce the number of operations necessary to complete complex parts, and reduce consumable wear to lower costs.
Glebar CS1 Cutoff Machine
Glebar’s CS1 Cutoff Machines and TF-9D Thrufeed Grinders provide operational simplicity that reduces consumable wear and tear, with the TF-9D also providing light automation capabilities to increase its ease of use for operators.
The company’s CS1-EA Hybrid Burr-Free Electrochemical and Precision Abrasive Cutoff Machine combines the separate functionalities of its CS1-E Burr-Free Electrochemical Cutoff Machine and the CS1-A Precision Abrasive Cutoff Machine. The electrochemical cutoff uses low cutting forces and precision up to .0004” (.01 mm), and completes tasks swiftly — Glebar provides an example of the machine cutting 89 hypotubes 0.020” in diameter in 20 seconds, as opposed to a full three minutes for laser cutting. While the company says electrochemical cutoff prevents burrs, it also provides electrochemical surface grinders for secondary operations like notching, bevel grinds and multi-facet points. The precision abrasive operation’s thin rubber bond cutoff blades limit kerf loss while producing surface roughnesses typically between .4 – .8 μm Ra.
Glebar TF-9D Thrufeed Grinder
Glebar’s TF-9D Thrufeed Grinder uses an 8.675” work wheel, which Glebar says is the widest work wheel on the market. This wheel can grind shapes up to 7.8” on a single pass, and features independently positioned top and bottom slides for enhanced accuracy and reduced setup times. Operators don’t need to constantly mind the machine, either, with the GFS standalone feeding system automating feeding, staging, grinding and unloading.
It sounds like a contradiction in terms-between centers and centerless grinding on one machine. But for some categories of workpieces, it's a viable production process that can yield machining time reductions of 45 percent over separate grinding operations.
Roughing and finishing on a single machine, using a single setup, has appeal for most shops. The advantages in time savings and accuracy are obvious. Eliminating the transport of workpieces between machines, as well as the setup for those secondary operations, is a boon for throughput. Critical features that need to maintain dimensional relationships can be much more reliably produced if machined complete in one clamping.
No other process can do what creep-feed grinding can do. Recent tests show even more can be gained by optimizing every element of a creep-feed system.