Long forging machine for the forging of round or sharp-edged bars
AssigneePahnke Engineering GmbH & Co. KG
InventorHans-Joachim Pahnke
Life of this patent
Estimating the term…
Abstract
To permit round and sharp-edged bars to be forged down to the smallest sizes on a long forging machine without the need for tool changes, swivelling steering levers which guide rams carrying tools, are provided with additional tools which may be actuated together with the tools to at the ram ends when the steering levers are in a freely movable state and the rams are positively locked inside the steering levers. When the steering levers are locked to the machine frame and the rams are guided linearly, material preforged to rounds may be finish-forged to sharp-edged bars, in which case the pairs of oppositely positioned ram-end tools, will function as two free forging presses arranged on different vertical planes.
Claims7
A forging machine for the forging of round or sharp-edged bars, having four drive units radially arranged on a machine frame on a plane transverse to the forging axis, synchronously driven rams supporting oppositely positioned tools facing each other in pairs, each ram being driven by a drive unit and each tool designed for forging a bar fed along said forging axis transverse to said plane, straight guides for guiding the rams by steering levers swivelley mounted on vertical surfaces and selectively lockable in place with respect to the machine frame so that said tools move along a straight path during forging, or swivelled in a vertical plane together with the rams when in locked position relative to the respective straight guide so that said tools move along an arcuate path during forging, wherein:
- an additional tool is supported on each steering lever, each additional tool on each steering lever and each tool on the adjacent ram comprising a pair of tool halves positioned next to each other in a direction parallel to the forging axis and being movable on different vertical planes;
- on each vertical surface two tool halves on opposite steering levers and two tool halves on opposite rams face each other;
- and
- a tool half on any steering lever is always adjacent a tool half on a ram.
Dependencies are inferred from the claim text.