Manufacturing & design technology

Internal gear tooth profile grinding

Internal gear tooth profile grinding technology uses a belt-drive spindle fitted to the standard GH 4.0, GH 5.0, or GH 6.0 grinding head.

A range of grinding arms that fit the three grinding heads allows changeover between external and internal gears in 30 minutes or less. Users detach the external gear grinding disk or worm, hang the internal gear grinding arm on the hardened stop, fix it in place with screws, then tension the belt-drive disk and the belt and attach the cover.

Internal gears can then be ground using a 100mm or 125mm grinding disk. The external gear grinding head does not have to be touched, and external gear grinding quality is unchanged once the internal gear grinding arm has been detached.

The IG Opal 4.0 gear grinding head has a 12,000rpm maximum spindle speed. The larger IG Opal 4.1 features a 125mm maximum grinding disk. Both arms were successfully tested using CBN and corundum disks. Where dressable grinding disks are used, the internal gear grinding arm travels up to the grinding dresser that is also used for external gear grinding.

Initially, the internal gear grinding arm is available in two sizes, with others to follow. Custom internal gear grinding arms can be developed to match customer workpieces.

Liebherr Gear Technology

www.liebherr.com

Increase efficiency for in-house calibration

i-Checker, designed to calibrate bore and linear gages and Digimatic, dial, and dial-test indicators, is at least 2x more accurate than the previous model. i-Checker achieves (0.1+0.4L/100)µm accuracy levels and at 10mm/s, is 2.5x faster than the current model.

All functions necessary for inspection are combined in the control box. Adjustment of the measurement position is aided by semi- and fully automatic measurement functions, which reduce inspection time. Digital indicators equipped with a data output function are checked via spindle positioning at the inspection points, and measurements are fully automatic. Operators can create and print simplified inspection certificates.

Updated i-Pak software includes the most recent standards for ASME, ISO, and JIS. Previous models can be upgraded with new software and controller.

Mitutoyo America Corp.

www.mitutoyo.com

MRO drills

Precisionlight high-speed steel (HSS) drills are designed to meet the needs of the maintenance, repair, and overhaul (MRO) sector. The line of Precisionlight HSS drills provide versatility and performance in a variety of materials and include general purpose drills with conventional 118° point geometries as well as tougher styles with 135° point, self-centering split points for more challenging applications.

Precisionlight covers most ferrous applications with drills suitable for use in portable drilling, drill presses, and other operations.

Within the Precisionlight program are the Worklight range of drills, optimized for ease of use and reliability. Worklight flute geometry improves chip evacuation, provides better coolant flow to the point, and reduces effort to push the drill through the workpiece.

The Worklight drill is offered in five series – 332HD, 333HD, 312SM, 342SDT, and 344RS. The complete program also includes Precisionlight drill sets which include a range of sizes available in most styles.

Dormer Pramet

www.dormerpramet.com