Spring chuck is ideal for machining small diameter workpieces. The spring chuck clamps the workpiece in a short time, which enables fast loading and unloading. The spring chuck has a short replacement time and can realize quick replacement of clamps of different sizes. Compared with the chuck, the spring chuck has higher clamping accuracy and better concentricity during turning processing. For profiled and borable chucks, they are more cost-effective and flexible than chucks. On machines with interpolated spindle construction, the spring chuck provides a short cutting force arm, resulting in more machining space and machining rigidity than chucks. The spring chuck is an envelope clamping that better protects the workpiece surface and provides better cutting torque.
The faster opening and closing of the chuck is due to its shorter drive stroke and the limited range of workpiece sizes of the chuck compared to the jaw chuck. Turning machines with two spindles are often used for a variety of high-volume machining where spring chucks can significantly save machining time. They can machine all machining surfaces of the part in one clamping operation, and these machines are often combined with bar feeders to enable unattended production and continuous machining of workpieces. In these applications, the chuck drive time savings for a single workpiece may be small, but the time savings per workpiece multiplied by the number of workpieces machined throughout the production process add up to considerable time savings.