A method to improve the collapse resistance of metallic tubular products is disclosed. Stress is applied to the metallic tubular products in order to change the residual stress profile of the metallic tubular products, such as those that have completed a straightening process, resulting in a residual stress profile that improves collapse resistance. The metallic tubular product is subjected to radial compression processing to control the residual stress profile and to enhance collapse resistance. The radial compression process may be applied after the tubular product has been subjected to a straightening process.

A tube straightening tool includes a tool housing having an exterior defining a tube entrance opening that opens into a first end of an internal cavity, and has an interior end wall at a second end of the internal cavity. The tool housing has an interior side wall extending from the tube entrance opening toward the interior end wall. A press block is in the internal cavity and a knob is external to the tool housing. A threaded shaft extends from the knob through the shaft opening into the internal cavity. The press block is coupled to the threaded shaft. Turning the knob moves the press block toward the interior side wall, and an exterior of a tube resting in the internal cavity is confronted by the press block and moved against the interior side wall. A method of straightening a tube using the tool is disclosed.

A tube straightening tool includes a tool housing having an exterior defining a tube entrance opening that opens into a first end of an internal cavity, and has an interior end wall at a second end of the internal cavity. The tool housing has an interior side wall extending from the tube entrance opening toward the interior end wall. A press block is in the internal cavity and a knob is external to the tool housing. A threaded shaft extends from the knob through the shaft opening into the internal cavity. The press block is coupled to the threaded shaft. Turning the knob moves the press block toward the interior side wall, and an exterior of a tube resting in the internal cavity is confronted by the press block and moved against the interior side wall. A method of straightening a tube using the tool is disclosed.

A surface reforming device which is configured for reforming a surface of an article includes a frame body, a first shaping assembly, a second shaping assembly and a driving mechanism. The frame body includes two side plates and a supporting shaft. The first shaping assembly is located in the operating space and includes a first plate body, a plurality of first through holes, a plurality of first rods and a plurality of first rod locking mechanisms. The second shaping assembly is located in the operating space and includes a second plate body, a plurality of second through holes, a plurality of second rods and a plurality of second rod locking mechanisms. The driving mechanism is configured for driving the first shaping assembly and the second shaping assembly to move towards each other along a pushing direction perpendicular to the z-axis and press the article.

A surface reforming device which is configured for reforming a surface of an article includes a frame body, a first shaping assembly, a second shaping assembly and a driving mechanism. The frame body includes two side plates and a supporting shaft. The first shaping assembly is located in the operating space and includes a first plate body, a plurality of first through holes, a plurality of first rods and a plurality of first rod locking mechanisms. The second shaping assembly is located in the operating space and includes a second plate body, a plurality of second through holes, a plurality of second rods and a plurality of second rod locking mechanisms. The driving mechanism is configured for driving the first shaping assembly and the second shaping assembly to move towards each other along a pushing direction perpendicular to the z-axis and press the article.

The present invention relates to a method (200) of forming a plurality of teeth of a cutting blade or guard, the method comprises: a) taking (210) a blank of material, the blank having an upper outer surface and a lower outer surface, wherein at least a portion of the lower outer surface is substantially planar and forms a plane of the blank; b) utilizing (220) a cutting device (20) In comprising a first die (40) and a second die (50), wherein the first die comprises a plurality of first elements (42) and the second die comprises a plurality of second elements (52), wherein a first plane (60) is defined with respect to upper surfaces of the plurality of first elements and a second plane (70) is defined with respect to lower surfaces of the plurality of second elements, and wherein each upper surface of the plurality of first elements has a centre part (44) that lies in the first plane and edge parts (46) that are below the first plane; c) placing (230) the blank in the cutting device, such that the portion of the lower outer surface faces the upper surfaces of the plurality of first elements and the portion of the upper outer surface faces the lower surfaces of the plurality of second elements; d) moving (240) the first die and second die with respect to each other such that the first plane is moved toward and passes through the second plane, such that each element of the plurality of first elements passes at least partially between adjacent elements of the plurality of second elements, and wherein teeth (80) of the cutting blade or guard are formed that correspond to the positions of the plurality of first elements and wherein the teeth have a lower outer surface formed from the lower outer surface of the blank; and e) utilizing (250) a bending device (30) to bend edge portions (82) of the teeth of the cutting blade or guard that extend below the plane of the blank after step d) back toward the plane of the blank.

A method of manufacturing a press-formed article includes first press forming and second press forming. In the first press forming, an intermediate formed article is formed from a metal sheet by subjecting the metal sheet to processing including performing draw-forming on the metal sheet to form a peripheral wall portion, bending the metal sheet to form a convex flange portion, and bending the metal sheet to form at least a side standing flange main body portion of a side standing flange portion and a floor flange main body portion of a floor flange portion. The second press forming includes bending the intermediate formed article to form the convex flange portion to an inclined flange portion.

A rework press assembly for reworking a dimensionally non-conformant component is provided. The rework press assembly includes a frame, a die coupled to the frame and configured to contact a first portion of the component, and a ram. The ram is coupled to the frame opposite the die with respect to an axis of the rework press assembly and is configured to contact a second portion of the component. The ram and the die define a component cavity therebetween. At least one of the die and the ram has a first length, relative to the axis, in response to the rework press assembly being at a first thermal condition. The at least one of the die and the ram has a second length, relative to the axis, in response to the rework press assembly being at a second thermal condition, and the second length is greater than the first length.

A rework press assembly for reworking a dimensionally non-conformant component is provided. The rework press assembly includes a frame, a die coupled to the frame and configured to contact a first portion of the component, and a ram. The ram is coupled to the frame opposite the die with respect to an axis of the rework press assembly and is configured to contact a second portion of the component. The ram and the die define a component cavity therebetween. At least one of the die and the ram has a first length, relative to the axis, in response to the rework press assembly being at a first thermal condition. The at least one of the die and the ram has a second length, relative to the axis, in response to the rework press assembly being at a second thermal condition, and the second length is greater than the first length.

In the straightening of radial run-out faults or linearity faults on elongate workpieces having at least one toothed region having peaks and troughs of the teeth of said toothed region, such as on toothed shafts or toothed racks, for ascertaining deviations from the ideally straight workpiece, the locations of the surfaces of the not yet straightened workpiece that form a reference plane are scanned at least at points or in portions on or in the region on the active reference circle or pitch circle, respectively, of the toothing that lies between the peaks and troughs of the teeth. The resulting measured items of data are utilized by the straightening machine such that a workpiece that is as ideally straight as possible at least in the toothed region is achieved by the straightening. The elevated locations of the tooth heads of the toothed region that form the peaks of the teeth and the elevated locations of neighboring tooth surfaces that lie in the reference plane are detected, and the height differentials of the elevated locations of the tooth heads in relation to the elevated locations of neighboring tooth surfaces that lie in the reference plane are ascertained. The height differentials are utilized by the straightening machine as corrective measured items of data such that said height differentials are considered when straightening the workpiece so as to form a workpiece that is as ideally straight as possible in the reference plane.