Accessories Tool-clamping innovation can save tooling costs
A finish-boring tool with a built-in ER connection is able to be connected directly to an ER collet chuck to deliver high rotational accuracy.
Swiss Tool Systems AG has introduced the EcoLine finish-boring tool, an innovative development that includes a built-in ER connection which enables the tool to be directly attached to an ER collet chuck. This, says the manufacturer, is a world first.
The ER connection allows users of the boring tool to save on tooling costs by eliminating the need for a master shank and extensions or reductions. According to Swiss Tool Systems, the breakthrough clamping concept, which includes a chuck cone grip and face contact, delivers very good rotational accuracy, maximum rigidity and a very strong retention force. Collet chucks that have an ER connection as specified in DIN 6499 are widely used in mechanical workshops around the world.
The ER connection provides manufacturers with a rigid tool for finish-boring whose clamping principle is similar to that of HSK systems. The monoblock EcoLine system, consisting of the boring tool and an integrated chuck cone, is simply screwed onto the clamping device by means of a clamping nut. The tool and the chuck cone of the clamp form a single unit, and behave as such. Because the resulting conical and planar connection is extremely rigid, high precision is ensured.
The ER clamping technology that distinguishes the EcoLine range of finish-boring tools delivers a stable connection comparable to that provided by HSK-T and Big Plus clamping systems but, says Swiss Tool Systems, with a sizable cost advantage. For one thing, additional clamping elements such as collets are not required. The ER system’s chucking capacity is also significantly greater, as the clamping nut is built into the connection. For instance, the Vario-Head boring tool can be used with an ER40-size clamp, which is suitable for boring holes with diameters in the range of 3 to 152 mm.
Swiss Tool Systems AG