A motor-operated shears which includes two blades that can move towards each other to perform a shearing movement is provided. In order to advantageously improve functional safety, towards the end of the movement, the blades are acted upon in a direction running transversely to the movement so as to keep the blades at a distance from one another in said direction.

As shearing blades of a first jaw portion, a shearing machines includes: a tip blade; a pair of first parallel shearing blades bent at an obtuse angle to the biting direction of the tip blade and disposed both sides of the blade width; and a pair of second parallel shearing blades bent at an obtuse angle to an attaching portion of the first parallel shearing blades and disposed on both sides of the blade width. As a tip blade, the shearing machine includes: a point blade a pair of tip tapered blades disposed on both sides of an end portion and whose blade width is increased toward the rear end; and a pair of tapered blades bent at an obtuse angle to an attaching portion of the rear end portion of the tip tapered blades and disposed toward the first parallel shearing blades.

A cutting head for a power tool. The cutting head comprises a pivot pin, and a first jaw and a second jaw each disposed for rotation about an axis defined by the pivot pin. The first jaw comprises a first blade mounting surface and a first ear having a first ear surface. The second jaw comprises a second blade mounting surface and a second ear having a second ear surface for rotational engagement with the first ear surface. The cutting head further comprises a first blade mounted on the first blade mounting surface and a second blade mounted on the second blade mounting surface. The first blade mounting surface, the second blade mounting surface, the first ear surface, and the second ear surface are substantially co-planar, and during a cutting action, the jaws rotate about the axis.

The invention discloses an automatic cooling and steel cutting device, which includes a casing, wherein the right end of the casing is provided with a conveying cavity, a connecting cavity and a driving cavity, the conveying cavity is provided with a conveying mechanism for pushing steel for cutting and the opening is upward, the connecting cavity is provided with a lifting mechanism for lifting the cutting part, the lower side of the connecting cavity is provided with a cutting mechanism for cutting steel. The device can cut off the steel evenly by itself when it is in use. During the cutting process, it will automatically spray water to cool down the steel and the cutter, so as to reduce the damage. After each section is cut, the cutter will automatically lift up to prepare the next section of steel cutting of wood.

The invention relates inter alia to a method for cutting a workpiece, in particular a blank or a component, comprising the following steps: inserting the workpiece into a cutting device, wherein the cutting device comprises a first tool half having at least one workpiece holder and at least one first cutting means, which comprises a first cutting edge and a contact surface, and a second tool half having at least one second cutting means having a second cutting edge and a contact surface, clamping the workpiece by means of the workpiece holder and the contact surface of the second cutting means, cutting the workpiece by means of the cutting means, the workpiece undergoes, prior to cutting, both a first prebending, which is produced substantially in the opposite direction counter to the cutting direction, and thereafter a second prebending in the cutting direction.

A cutting head for a hydraulic power tool includes a first jaw that includes a first ear configured with a slot for receiving a corresponding ear. The second jaw includes a second ear with a third ear bore that aligns in between a first ear bore and to a second ear bore of the first ear when the second ear is coupled in the slot of the first ear. The cutting head further includes a spring-biased flange coupled to a blade mounted to the first jaw and a retained coupled at a fixed position to a blade mounted to the second jaw. The retainer is configured to receive the flange during a cutting action such that the flange prevents the blades from shifting out of alignment during the cutting action.

To provide a plate material cutting device of which thickness can be reduced and made compact. A plate material cutting device includes: a first cutting blade fixed to a housing; a second cutting blade that cuts plate material collaboratively with the first cutting blade; and a drive unit that causes the second cutting blade to reciprocally move with respect to the first cutting blade, wherein the drive unit includes: a shaft that is rotatable on a rotational axis; a first motor connected to one end portion of the shaft; a first mechanism that is capable of causing the second cutting blade to reciprocally move with respect to the first cutting blade in conjunction with rotation of the shaft on the rotational axis; and a second mechanism that is capable of supporting a load onto the shaft at a time of cutting plate material.

A pipe cutting machine, which includes a hole-type movable cutting die (6b), which is driven by a drive lever (7), by means of which circular movements with a continuously variable stroke (h) can be performed, an eccentrically shaped crank pin bearing (26) in an outer shaft (18), in which a crank pin (11), which is arranged eccentrically on a crank pin drive (23), is movably supported in relation to the outer shaft (18), the crank pin (11) being in operative connection with the drive lever (7).

An in-line portable, hand held hydraulic cutting tool having a handle assembly and a working head assembly is provided. The handle assembly has a tool frame portion and a neck portion. The working head assembly has a pair of jaw members joined so that they are movable relative to each other and held in place by a locking pin. Each jaw member has a cutting blade secured to or directly formed into the jaw member. A stabilizer can be secured to or directly formed into one or both jaw members. The one or more stabilizers are aligned with a respective cutting blade such that during a cutting operation at least an edge of the stabilizer engages an object being cut to limit rotation of the object during the cutting operation.

A cutting tool with blade parts having an application surface for a driving force, which essentially extends orthogonal to a cutting plane, is provided. A cutting force acting upon the blade parts causes a counterforce. A line of action of the cutting force extends differently from a line of action of the counterforce. Each application surface has an end facing the cutting plane and an end facing away from the cutting plane. The ends are located on the same side of the cutting plane. In order to reduce a cutting gap between blade edges, the end facing the cutting plane defines a first distance and that the first distance and/or a second distance are chosen such that an intersecting point lies in front of a line of action of the cutting force referred to a clockwise direction.