Grinding Stations Designed for Worm Gear Manufacture
Holroyd Precision’s WG grinding stations are designed to provide high levels of accuracy and finish in worm gear shaft production.
Holroyd Precision’s WG grinding stations are designed to provide high levels of accuracy and finish in worm gear shaft production. Depending on the model, the machines are capable of grinding precision worm shafts to AGMA 14/DIN 2 in sizes ranging from 3 to 500 mm in diameter and thread lengths ranging to 1,600 mm, with a 130-mm diameter through-bore workhead to accommodate long shaft lengths.
The spindle provides speeds as fast as 3,000 rpm, and the machine’s feed rates are variable to 7.5 m/min. Digital drives to all CNC servo axes incorporate fiber-optic serial real-time communications system (SERCOS) and digital closed-loop feedback. Digital servo drives and high-torque density synchronous servomotors provide a reliable drive package, the company says. A fully automatic grinding wheel balancing system is built into the machine spindle with power monitoring for machine overload protection. Other features include a two-axis CNC wheel dresser with diamond dressing disk, a programmable rough and finish grinding and automatic wheel profile calculation. 3D measurement and an integrated correction probe enable in-machine inspection of ground components.
The grinding machine also is equipped with the Holroyd HTG eight-axis CNC with a touchscreen and graphical, menu-driven user interface. The control is said to simplify the transfer of data from gear drawings to produce profile and grinding paths, generate standard tooth forms, or perform topological modifications. A gear manufacturing and design analysis program helps to reduce the margin for error, ensure consistency and extend gear life. Fully automatic programmable cycles include dressing with compensation for dressing disk wear, and gear tooth grinding with probing and form measurement.
Renishaw’s SP80 scanning probe with 1-micron resolution in the X, Y and Z axis can be added to the grinding stations as an option for measuring tooth position shaft run-out, tooth depth, helical lead and more.
Related Content
-
How to Start a Swiss Machining Department From Scratch
When Shamrock Precision needed to cut production time of its bread-and-butter parts in half, it turned to a new type of machine tool and a new CAM system. Here’s how the company succeeded, despite the newness of it all.
-
When Organic Growth in Your Machine Shop Isn’t Enough
Princeton Tool wanted to expand its portfolio, increase its West Coast presence, and become a stronger overall supplier. To accomplish all three goals at once, acquiring another machine shop became its best option.
-
10 Things to Know About Creep-Feed Grinding
Because of the high material removal rate creep-feed grinding can deliver in challenging materials, grinding might not be just the last step in the process—it might be the process.
