49results about How to "Reduce forming force" patented technology

A piston for an internal combustion engine is formed from a metal part cast in one piece. Heating of a billet is carried out so as to bring it to an intermediate temperature between its solidus temperature and its liquidus temperature, and shaping thereof by thixoforging is carried out.

The invention relates to a method for producing a metal component, wherein a raw material (4, 34, 42, 74) is provided, the raw material (4, 34, 42, 74) is stamped and is further processed following the stamping process to form a component (90, 108, 114). The component (90, 108, 114) has at least partially stamped areas (16, 36, 48, 98), and the raw material (4, 34, 42, 74) is hot-stamped. The invention further relates to the use of a hot-stamped metal component, which is preferably produced using a method according to the invention, in a motor vehicle body, in particular as a reinforcing element in a B-column (114), a sill, or a longitudinal beam.

The invention relates to a method for forming spiral segmented blades. In the method, the plate is first cut into a ring blank, and a straight slit is cut between the inner hole and the outer circle of the ring according to the radial direction of the ring. The outer circle of the blank is positioned, the part of the ring blank is molded, and the partial helical surface is molded out of the partial ring blank. After multiple rotations and multiple local moldings, the helical segmented blade Molded finish. The invention greatly reduces the forming force required for the helical segmented blade, the size of the mold used is small, and the energy consumption of the equipment is low. The helical blade product made by the invention has a continuous spiral radian, smooth surface, precise forming and uniform thickness. A mold can be used to produce multiple specifications of spiral segmented blades, the production cost is greatly reduced, and high-strength and high-hardness material spiral segmented blades can be manufactured.

The first purpose of the invention is to provide a forging and pressing method of steel rail heel; a steel rail heel comprises a pre-forging heel and a final forging heel; the pre-forging heel comprises a first section, a second section, and a third section; the final forging heel comprises a fourth section and a fifth section; the method specifically comprises the following steps: implementing a first stage forging and pressing after heating the first section, the second section and the third section, wherein the first two sections are molded by forging and pressing, the third section is pre-deformed; and implementing a second stage forging and pressing after heating the last three sections. The provided forging and pressing method adopts a measure of molding twice, thereby being able to solve the defect that the size of the molded final forging heel is unqualified, as well as greatly reducing the molding force in the entire steel rail heel product molding process. The second purpose of the invention is to provide a three-position molding die with a simple integral structure; a second upper die section inside a pre-forging rail molding cavity and a first pre-forging insert inside a final forging molding cavity are both in detachable structures, thereby meeting different requirements to the three-position molding die in the twice forging and pressing process; the three-position molding die is convenient to be assembled, and strong in practicability.

The invention discloses a cold extrusion overflow forming process of an oil pump cover plate. The process comprises the following steps: 1) the unloading, the annealing, the shot blasting and the surface lubricating treatment are performed on a blank in sequence; and 2) the blank is put in a mold for one-step formation of cold extrusion and overflow to produce an oil pump cover plate forging with a spiral oil groove in one surface, a deep groove on the other surface and a flange at the peripheral edge. The adopted mold comprises an upper mold, a lower mold and an ejecting rod, wherein the upper mold comprises a punch; an overflow groove is peripherally formed in the outer wall of the end part of the punch; the lower mold comprises an outer ring, an inner ring, an outer mold core and an inner mold core in interference fit in sequence; the inner mold core comprises an inner mold core base, and multiple inserts inserted in the inner mold core base; the ejecting rod is in interference fit with the inner mold core base, and is used for ejecting the formed oil pump cover plate forging; and after the upper mold and the lower mold are closed, a molding cavity matched with the oil pump cover plate is formed. The split mold is adopted to realize one-step cold extrusion formation; and meanwhile, the overflow formation is matched to greatly prolong the service life of the mold.

The invention relates to a device (1) for amplifying an input force (Fe), said device having a compression rod (3) and a support element (5) for radially supporting the compression rod (3), wherein the support The element (5) has a hollow guide shank (7) protruding forward from the base (6) in the steering direction (B), through which the pressure rod (3) is guided and radially supported on the guide shank (7). handle. In order to provide an improved device (1) of this type which achieves a sufficient tipping resistance of the clamped pressure rod (3) with the least possible engagement into the device construction and with reduced weight and manufacturing costs According to the invention it is proposed that the support element (5) has at least one profile (8) for increasing the overturning rigidity of the guide handle (7) with respect to the actuation axis (A), said at least one profile passing at least partially through the bottom ( 6) and guide handle (7) extend.

The invention discloses a two-step blow forming method and a two-step blow molding device for an amorphous alloy special-shaped tube, and belongs to the field of the plastic forming of amorphous alloys. The method comprises the following steps of: heating a preformed variable-thickness amorphous alloy plate blank to a supercooling liquid phase area, introducing preheating pressure gas, and performing blow forming until the plate blank is adhered to a die to complete the performing of an amorphous alloy tube blank; and cooling the tube blank quickly, heating to the supercooling liquid phase area to perform secondary blow forming, and after cooling, opening the die to complete the forming of the amorphous alloy special-shaped tube. In the method, the forming capacity of amorphous alloy parts with complex shapes is improved by the two-step preblow forming of the variable-thickness amorphous alloy plate blank and the amorphous alloy tube blank, and the method and the device also can be used for the blow forming of containers and shell and cover parts which are made of amorphous alloy.

A method for producing a lightweight sheet-metal component with varying wall thicknesses includes extruding a lightweight metal to form a profile with a non-planar profile cross section, wherein the wall thicknesses of the profile cross section differ from one another in at least two regions, cutting the profile to length into profile pieces, widening the profile pieces, and forming the flattened profile piece into a three-dimensional shaped sheet-metal component, wherein the sheet-metal component has at least two regions with wall thicknesses that are different from one another.