An edge-removing tool for sheet metal includes a head with a rotating cutting tool. The head has at least one guide for an edge. The head preferably includes a sleeve with the guide. The tool can be used to separate edges of an angled and/or welded sheet metal connection.

An edge-removing tool for sheet metal includes a head with a rotating cutting tool. The head has at least one guide for an edge. The head preferably includes a sleeve with the guide. The tool can be used to separate edges of an angled and/or welded sheet metal connection.

A method measures an edge of a workpiece by scanning. The scanning is performed by a scanning tool mounted on a moving head of an edge-facing machine while that moving head is moved along the edge to be measured before, during or after an edge facing tool of the edge-facing machine that faces the edge. The method can be performed by an edge-facing machine that includes at least one edge facing tool and that further includes a scanning tool mounted on a movable head of the machine, which head is movable along an edge of a workpiece.

A method measures an edge of a workpiece by scanning. The scanning is performed by a scanning tool mounted on a moving head of an edge-facing machine while that moving head is moved along the edge to be measured before, during or after an edge facing tool of the edge-facing machine that faces the edge. The method can be performed by an edge-facing machine that includes at least one edge facing tool and that further includes a scanning tool mounted on a movable head of the machine, which head is movable along an edge of a workpiece.

An engine includes a cylinder block including a cylinder hole, a crank shaft as an offset crank, and a connecting rod that connects the piston and the crank shaft. An inclined surface is provided on an entire circumference of a crank-shaft-side opening edge of one end of the cylinder hole. When viewed in the axial direction of the crank shaft, a boundary line between the inclined surface and the cylinder hole extends towards the other end of the cylinder hole as it extends toward an offset side on which the crank shaft is offset from the center axis of the cylinder hole. The offset crank engine has the entire circumference of the crank-shaft-side opening edge of the cylinder hole chamfered without any bad influence on the sliding surface and posture of the piston to avoid interference between the crank-shaft-side opening edge of the cylinder hole and the connecting rod.

An engine includes a cylinder block including a cylinder hole, a crank shaft as an offset crank, and a connecting rod that connects the piston and the crank shaft. An inclined surface is provided on an entire circumference of a crank-shaft-side opening edge of one end of the cylinder hole. When viewed in the axial direction of the crank shaft, a boundary line between the inclined surface and the cylinder hole extends towards the other end of the cylinder hole as it extends toward an offset side on which the crank shaft is offset from the center axis of the cylinder hole. The offset crank engine has the entire circumference of the crank-shaft-side opening edge of the cylinder hole chamfered without any bad influence on the sliding surface and posture of the piston to avoid interference between the crank-shaft-side opening edge of the cylinder hole and the connecting rod.

A front and back chamfering rotary milling cutter includes a cutter body including an insert pocket and a star-shaped indexable cutting insert releasably retained in the pocket. The cutting insert has star-shaped upper and lower surfaces connected by a peripheral surface intersecting each of the upper and lower surfaces. The cutting insert includes a plurality of circumferentially alternating inner and outer corner portions. A cutting portion is defined by each outer corner portion together with an adjacent first inner corner portion rotationally forward thereof and an adjacent second inner corner portion located rotationally rearward thereof. Each cutting portion includes a front chamfering cutting edge extending from the outer corner portion to the first inner corner portion and a back chamfering cutting edge extending from the outer corner portion to the second inner corner portion.

Proposed is an adhesive retainer including a body part which is formed of a shape memory alloy material and has a front surface in close contact with and attached to each tooth, wherein the body part includes a curved protrusion part which is formed to protrude toward an interdental space so as to be inserted into the interdental space, and multiple support parts having front surfaces which are in close contact with tooth surfaces of teeth outside the interdental space. A manufacturing method of the adhesive retainer includes a step of acquiring three-dimensional scanning data about a tooth arrangement, a data processing step of generating a first processing line and a second processing line, a laser cutting step of laser cutting a flat plate-shaped base material based on processing line data to form a body-part forming part, and a shape processing step of cutting the body-part forming part.

A cell separator fly-cut mechanism includes a first driving component, a second driving component, a lamination component and a fly-cut component, and the lamination component is in transmission connection with the first driving component; and the fly-cut component is in transmission connection with the second driving component, and the fly-cut component is used to move synchronously with the separator and cut off the separator at the same speed as the separator.

A cell separator fly-cut mechanism includes a first driving component, a second driving component, a lamination component and a fly-cut component, and the lamination component is in transmission connection with the first driving component; and the fly-cut component is in transmission connection with the second driving component, and the fly-cut component is used to move synchronously with the separator and cut off the separator at the same speed as the separator.