Using a new method of external cylindrical grinding between centers for shaft components, JUCENTRIC 500 from JUNKER slashes cycle times by half. The cylindrical grinding machine is a specialist in the grinding of camshaft tubes and assembled camshafts.
For the external grinding of cam shafts, workpieces are positioned and clamped in the JUCENTRIC 500 between centers – the workhead and tailstock. Grinding takes place while the workpiece is clamped in position, ensuring that the relation to the centerline is maintained. The major benefit here: Downstream processes such as finishing and joining are significantly simplified.
By clamping workpieces between centers, the JUCENTRIC 500 permits a more rapid grinding wheel approach to the workpiece, and reduces the grinding times. Depending on the grinding assignment, target cycle times are between 16 and 20 seconds. Compared to centerless grinding, this enables cycle times to be cut by as much as 50 percent.
To provide ideal support and minimal deflection, the workpiece rests on the CNC-controlled height-adjustable support rail. Together with the regulating wheel and grinding wheel, it creates an optimum “grinding triangle”. As grinding progresses, it is evenly adjusted to the required finished dimension, guaranteeing precise grinding operation.
The JUCENTRIC 500 takes workpieces between 280 and 500 mm in length and between 15 and 60 mm in diameter easily in its stride. It works both with corundum and CBN grinding wheels.
With its JUCENTRIC 500, JUNKER is offering far more than just a grinding machine. The company’s service performance includes delivery and installation of the machine as well as a grinding process adjusted to the customer's requirements and production.
The workpiece is positioned and clamped between centers. Following grinding the grinding gap opens and the workpiece is removed.