Grinding Machine Can Grind Complete Crankshaft in Single Setup
Junker offers its Jucrank platform for cylindrical and non-cylindrical grinding with a swing diameter of 470 mm and a part length capacity ranging to 4,800 mm.
Junker offers its Jucrank platform for cylindrical and non-cylindrical grinding with a swing diameter of 470 mm and a part length capacity ranging to 4,800 mm. Initially designed for grinding and re-grinding of large crankshafts, the machine can also be used for grinding printing rollers, electric motor shafts and other heavy workpieces.
To ease part setup, the Jucrank has a slide with an integrated length measuring system that enables the technician to first bring the work heads into position, and then the steady rests. This machine’s CNC steady rests have only one axis each, increasing their stability and stiffness. Each of as many as 11 steady rests can be controlled individually and applied to a section at any time, even during the grinding process, for greater flexibility. This capability is supported by a high-performance control system supporting at least 24 CNC axes.
An integrated measuring system helps prevent scrapping of forged and hardened workpieces such as crankshafts and enables completing grinding in one setup. The system measures main and pin bearing diameters during the grinding process, and measures the entire workpiece afterward including the taper of each element, bearing widths and lift heights. Based on the measuring data, the machine finishes the grinding process while using the WK axis, which swivels the grinding spindle, compensating for tapers in the process. The grinding machine can therefore provide each main and pin bearing with its own profile shape, and then grind the two shaft ends, if required.
Related Content
-
High RPM Spindles: 5 Advantages for 5-axis CNC Machines
Explore five crucial ways equipping 5-axis CNC machines with Air Turbine Spindles® can achieve the speeds necessary to overcome manufacturing challenges.
-
How to Mitigate Chatter to Boost Machining Rates
There are usually better solutions to chatter than just reducing the feed rate. Through vibration analysis, the chatter problem can be solved, enabling much higher metal removal rates, better quality and longer tool life.
-
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.