Upsetting device
AssigneeInstytut Obrobki Plastycznej
InventorTadeusz Rut
Life of this patent
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Abstract
A device for upsetting a workpiece has a frame, a head for movement in a first direction toward the frame, and first and second tool holders between the frame and the head for holding dies for the upsetting. A parallelogram linkage mechanism supports the first tool holder on one of the frame and head for movement by the movement of the head in the first direction and in a second direction perpendicular to the first direction and toward the second tool holder for the upsetting. The parallelogram linkage mechanism has first and second pins respectively on the first tool holder and the one of the frame and head, and a link rotatably on the pins, one of the pins being eccentric in the second direction.
Claims21
In a device for upsetting a workpiece, the device having a frame, a head for movement in a first direction toward the frame, first and second tool holders between the frame and the head for holding dies for the upsetting, and a parallelogram linkage mechanism supporting the first tool holder on one of the frame and head for movement by the movement of the head in the first direction and in a second direction perpendicular to the first direction and toward the second tool holder for the upsetting, the improvements wherein:
- the parallelogram linkage mechanism comprises first and second pins respectively on the first tool holder and the one of the frame and head, and a link rotatably on the pins, wherein one of the pins is eccentric in the second direction.
In a device for upsetting, especially on presses, consisting of:
- two rigid structures,
- one of which form the frame,—the other head of the device,
- and of at least one split tool holder containing die inserts clamping the workpiece and upsetting it in the upsetting zone, located in front of the face of the split dies,
- one side of the split die holder being slidingly supported by one of the rigid structures in a plane parallel to the split die parting plane,
- while the other side is supported by the parallelogram linkage mechanism, made of at least two toggles which mechanism is, in turn, supported by the other rigid structure of the device,
- the toggles being kinematically coupled to links maintaining the assumed distance of the axes of two joints of each toggle by means of a links which have two separate bearing pins one of which is adjustable eccenter bearing pin seated in the rigid structure of the device and the second bearing pin is seated into the die holder supported on the parallelogram linkage mechanism.
Dependencies are inferred from the claim text.