A device for strengthening a straight pipe, including a first positioning mold, a second positioning mold, a split mold, a rounding mold, a first cavity and a second cavity. A method for strengthening a straight pipe is further provided. The split mold is adjusted to position the pipe. The pipe is inserted into the first and second positioning molds. First and second sealing rings are arranged in an inner cavity of the pipe. Hydraulic oil is injected into the first cavity to expand the pipe to perform an expanding deformation. When the hydraulic oil is unloaded, the split mold moves towards an axis of the first positioning mold to perform a reducing deformation. After the expanding and reducing deformations, the pipe is transported into the rounding mold, and hydraulic oil is injected into the second cavity to expand the pipe to perform the rounding.

The present invention is a mini wheel CNC and manual lathe with wheel straightener and method for using said lathe.

A device for strengthening a straight pipe, including a first positioning mold, a second positioning mold, a split mold, a rounding mold, a first cavity and a second cavity. A method for strengthening a straight pipe is further provided. The split mold is adjusted to position the pipe. The pipe is inserted into the first and second positioning molds. First and second sealing rings are arranged in an inner cavity of the pipe. Hydraulic oil is injected into the first cavity to expand the pipe to perform an expanding deformation. When the hydraulic oil is unloaded, the split mold moves towards an axis of the first positioning mold to perform a reducing deformation. After the expanding and reducing deformations, the pipe is transported into the rounding mold, and hydraulic oil is injected into the second cavity to expand the pipe to perform the rounding.

A device for strengthening a straight pipe, including a first positioning mold, a second positioning mold, a split mold, a rounding mold, a first cavity and a second cavity. A method for strengthening a straight pipe is further provided. The split mold is adjusted to position the pipe. The pipe is inserted into the first and second positioning molds. First and second sealing rings are arranged in an inner cavity of the pipe. Hydraulic oil is injected into the first cavity to expand the pipe to perform an expanding deformation. When the hydraulic oil is unloaded, the split mold moves towards an axis of the first positioning mold to perform a reducing deformation. After the expanding and reducing deformations, the pipe is transported into the rounding mold, and hydraulic oil is injected into the second cavity to expand the pipe to perform the rounding.

The disclosure discloses a wheel rim straightening device. The wheel rim straightening device includes a lifting platform; the lifting platform is symmetrically provided with a left horizontal sliding table and a right horizontal sliding table; the left horizontal sliding table and the right horizontal sliding table are each provided with a vertical sliding table; and the two vertical sliding tables are provided with an inner pressure head which extends outwardly and corresponds to an outer pressure head, and a first runout detecting gauge corresponding to a second runout detecting gauge.

An adjustable case sizing die includes a die body having a threaded outer surface and a threaded inner surface. The threaded outer surface of the die body has a first pitch. The threaded inner surface of the die body has a second pitch smaller than the first pitch. A sizing insert is positionable within an interior cavity of the die body. An adjusting spindle is connected to a top of the sizing insert. The adjusting spindle has a threaded outer surface. The threaded outer surface of the adjusting spindle has the same pitch as the inner surface of the die body. The adjusting spindle is threadably insertable into the die body. Turning the adjusting spindle within the die body changes a height of the sizing insert within the die body.

A wheel correction device includes a lower correction system, a support detection system, a synchronous clamping rotation system, upper correction systems, an upper lifting clamping drive system, a lower lifting drive system, etc. The wheel correction device can be used for not only correcting the axial and radial deformation of a wheel but also adjusting the correction way according to the type of radial deformation, and has the characteristics of high automation, powerful function, advanced technology, strong versatility and high safety and stability.

The present invention relates to: a shape correction device for a frame body; and a method for manufacturing an electrolyte film/electrode structure that is provided with a resin frame for a fuel cell. A shape correction device, which corrects the shape of a frame body that is provided with a rectangular opening, is equipped with a pressing mechanism that applies, to each side of the frame body, a pressing force directed from the inner side to the outer side of the opening. The pressing mechanism may have a first bar and a second bar, which apply the pressing force by being in contact with inner wall surfaces of each side of the frame body.

The present invention relates to: a shape correction device for a frame body; and a method for manufacturing an electrolyte film/electrode structure that is provided with a resin frame for a fuel cell. A shape correction device, which corrects the shape of a frame body that is provided with a rectangular opening, is equipped with a pressing mechanism that applies, to each side of the frame body, a pressing force directed from the inner side to the outer side of the opening. The pressing mechanism may have a first bar and a second bar, which apply the pressing force by being in contact with inner wall surfaces of each side of the frame body.

The invention discloses aluminum alloy wheel shape-correcting equipment which comprises rack, an output end of positioning air cylinder is arranged at the bottom of the rack corresponding to the center of the upper rotating disc and is vertically and upwards connected with positioning cone.