Abstract: A cutter to cut die attach solder preform material is disclosed. It is formed of: a base; a pair of raised blocks spaced apart on the base with each having a slot sized to accommodate a cutting blade configured to cleave the material to be cut, constrain the cutting blade to vertical movement, and maintain the squareness of the cutting blade with respect to the base for cutting material; an adjustable stop positioned forward of the cutting blade which is configured to be moved so as to set the length of the material to be cut by the cutting blade; and a linear scale positioned proximate to the adjustable stop which enables a measured length of the material to be cut. Methods of using the aforementioned cutter are also disclosed.

Abstract: A punching device includes: a base unit including a supporting part having two opposite pivot seats and a die part; a punch unit including a punch that is disposed directly above the die part and between the pivot seats, the punch being slidable against the die part along a vertical axis; and a pressing unit including two driving levers, each of which has a driving protrusion. The driving protrusions of the driving levers are disposed located respectively to two sides of the vertical axis in asymmetrical manner with respect to the vertical axis and are rotatable relative to the base unit to press against the punch unit.

Abstract: Disclosed is a die press with a base, at least two cam members spaced from the base, an upper platen located between the base and the two cam members to define a space for a die, the upper platen being generally parallel to the base, the upper platen also being attached to the two cam members so that when the two cam members are actuated, the upper platen is moveable relative to the base, and a linkage connecting the two cam members so that the two cam members move in unison relative to each other when actuated.

Abstract: The present invention is directed to a device for limiting the force exerted on an actuating mechanism for a binding device and/or a perforating/punching device, with the actuating mechanism being comprised of a rotary shaft coupled to the corresponding movable part of the binding and/or perforating/punching device, such that a rotary motion of the shaft is converted into a translational motion of the corresponding movable part of the binding and/or perforating device. There; is provided in the actuating mechanism a coupling mechanism which performs a decoupling function automatically when the force exerted on the actuating mechanism exceeds a maximum permissible value.

Abstract: An improved hydraulic paper cutting machine for preventing paper contamination and ensuring operation safety. A hydraulic cylinder is disposed below a machine body and located below the sheet of paper to be cut. The paper will not be contaminated even if the hydraulic cylinder leaks. A stop element is provided on a linkage means to prevent a cutter frame; the stop element may prevent the cutter frame from falling down if the hydraulic cylinder malfunctions and goes out of control, thus ensuring the safety of the operator.

Abstract: A machine tool driving device suitable for use in a shearing machine, a press or the like which has a machine tool mounted on a tool support vertically movable along a fixed frame, the device comprising at least a pair of links connected to the support for drivingly imparting vertical reciprocating movements thereto, the pair of links being always disposed symmetrically with respect to an imaginary vertical plane which passes through the center of the tool support plate so that horizontal components of the driving force which is imposed on the support by the paired links are cancelled by each other to allow high precision work.