Junker QUICKPOINT 1000

Peel grinding uses a narrow (3-5 mm) CBN wheel traversing at high feed rates in a helical path across the workpiece — similar to a turning operation but with an abrasive wheel. Plunge grinding uses a wide wheel (often as wide as the feature to be ground) that is fed directly into the workpiece. Peel grinding's advantage is that one narrow wheel can grind any profile within the machine envelope, while plunge grinding requires a different profiled wheel for each diameter combination. For shafts with multiple steps and features, peel grinding is typically faster and requires far less tooling investment.

For multi-feature shaft components, yes — the QUICKPOINT 1000 can replace multiple conventional cylindrical grinders or a conventional grinder combined with a profiling grinder. For simple, single-diameter cylindrical grinding of high-volume identical parts, a conventional plunge grinder may still offer competitive cycle times without the QUICKPOINT's capital cost. The QUICKPOINT delivers its strongest ROI when the part family requires multiple diameters, shoulders, tapers, and radii — the more complex the profile, the greater the QUICKPOINT's advantage.

A narrow vitrified CBN wheel on the QUICKPOINT is dressed periodically to restore its cutting ability and geometry. Because the wheel is narrow and the profile is simple (flat face), dressing is fast — typically 15-30 seconds per dressing cycle using a rotary diamond dressing roll. The CNC automatically compensates for wheel diameter reduction after each dressing cycle. Electroplated CBN wheels (single-layer) do not require dressing but are replaced when worn — their life at the QUICKPOINT's operating parameters is typically 50,000-150,000 parts per wheel.

The QUICKPOINT 1000 achieves surface finishes in the Ra 0.1-0.4 µm range in production conditions, depending on workpiece material, hardness, CBN wheel specification, and final traverse parameters. For precision bearing journals and hydraulic valve stems, Ra 0.1-0.2 µm is typical with a finishing pass at reduced feed rate. The peel grinding process can produce a fine helical surface texture that, in many applications, is functionally superior to a random-lay finish from wide-wheel plunge grinding for fluid film bearing and sealing applications.

Yes, Junker offers the QUICKPOINT series in multiple size variants. The 1000 handles up to 1,000 mm between centers. Larger variants extend to 1,500 mm and beyond for longer shaft components. Junker's application engineering team will recommend the appropriate variant based on the customer's longest workpiece and the specific grinding strategy required. The core peel grinding process and hydrostatic guideway technology are consistent across all QUICKPOINT variants.