KUNCKLE JOINT LEVERAGE

Forming techniques is greatly modernized, many products which were produced by conventional methods can now be produced on knuckle Joint Presses more economically to close tolerances thus eliminating subsequent machining. These presses are designed for work requiring slow, powerful presses close to bottom stroke, suiting to work involving coining, embossing, extruding, beading, sizing and swaging operations.

Knuckle Joint Presses have virtually eliminated use of expensive machines for subsequent operations by producing components to close tolerances and these machines can be equipped with automatic feeding devices to facilitate material handling and speedy production.

Regarding press cycle, from production point of view idle stroke is driven at high speed until mould touches material and forming takes place at slow speed exerting full rated machine capacity. The sketch will show the differences of moving curved lines of knuckle Joint press and an eccentric press, where stroke length is same, the dwell increases efficiency and accuracy of formed components.

The Knuckle type drive of presses thus develops considerable power and tremendous mechanical advantage near bottom stroke. Slide adjustment is easily accomplished by taper wedge placed on upper portion of Knuckle mechanism either manually or with motive power at extra cost.