30results about How to "Less machining" patented technology

The invention relates to a brute-force hot-spinning accurate plastic forming method for hollow train shaft workblank and belongs to the technical field of plastic forming of long-shaft parts. According to the brute-force hot-spinning accurate plastic forming method, the problems that hollow train shaft moulds are difficult to manufacture and complex in manufacturing process are solved. The brute-force hot-spinning accurate plastic forming method comprises the steps of material preparing, heating, feeding, spinning and refining. By means of a brute-force hot-spinning technique, the rotating speed of work pieces, the feeding speed of a rotary wheel and the axial moving speed of a rotary wheel frame are controlled by a numerical controlling technique. Thus, high-accuracy hollow train shaft workblank can be obtained in a spinning manner, and quick accurate plastic forming of the hollow train shaft workblank can be achieved. The brute-force hot-spinning accurate plastic forming method is simple in manufacturing procedure, good in metal fiber flow direction, small in machining allowance, high in material utilizing rate, mouldless in forging, low in manufacturing cost and suitable for large batch production of various specifications of hollow train shafts.

A bearing cap assembly 5 generally comprising at least one bearing cap 10 having a mini-cap bearing cap 20 and a mini-cap 14. The bearing cap 10 having a shaft bore for receiving a balance shaft and a crankshaft bore for receiving a crankshaft upon connection of the bearing cap assembly 5 to an engine. The bearing cap 10 has a fault line extending between the mini-cap bearing cap 20 and the mini-cap 14 whereby split fracturing the bearing cap 10 along the fault line separates the mini-cap bearing cap 20 from the mini-cap 14. The balance shaft is secured between the mini-cap bearing cap 20 and the mini-cap 14.

A fastener system shifting shear stresses away from a collet body and provides clamping action to targeted structures. The fastener system includes feet in the collet body that mate with openings in a sleeve at least partially surrounding the collet body. The sleeve or the collet body includes interior threads that engage with a stud that is configured to extend through the collet body and bend the feet such that they project outward from the sleeve openings in an engaged configuration.

A rotary cutter drum includes a cutter portion formed of a multiphase material and includes first and second substantially cylindrical, radially outwardly exposed surfaces, and a knife member formed of one piece with the exposed surfaces and arranged to axially separate the first and second surfaces from one another. The knife member protrudes by a distance in the range of 1 to 5 mm radially outwardly beyond a smallest diameter portion of the first and second exposed surfaces. The knife member includes two sides terminating at respective ones of the first and second exposed surfaces.

A dental handpiece (10) of the type having a body (11), a head (13) and a neck (12), is improved by having at least one portion of the handpiece (10) formed by metal injection molding or MIM. The use of MIM allows for improved fabrication and function. According to one aspect of the invention, the head (13) and neck (12) of the handpiece (10) are MIM-formed as a single or unitary piece.

The dynamic mold concept has a manufacture, a process, and an apparatus. The process is that two or more steps (initial processes) be done simultaneously. A blow molding and an injection molding machine can work within the same mold and do their process together at the same time. The dynamic mold allows the mold to be split up into several parts or it has several dies within the structure. It allows the dies to move to allow the part to exit from the mold and move in accordance to do several steps one after the other also. For manufacturing sake for example shear, thermodynamics, temperature demands for quality of product, and for reduced mold design cost, allow two or more processes be done very close together. The dynamic mold is for metal applications as well incorporating a hydroforming, punch and forging etc. application. The process is open to all known manufacturing processes in metal and in plastic and in ceramics and glass and in pelet form as well, and most particles for feed limited that the product or process does not have unsafe processes and products. The manufactures are new products applicable to today's products reducing labor and tooling and hence cost. It will help recycling and aid in the enviroment for example, more hot and cold beverage drinking plastic containers will reduce the cost of plastics considerable and reducing the cost of recycling to fewer products to recycle.

The present invention provides a casting / hot forging die having a forming surface and an opposing rear surface. The rear surface has a plurality of cavities spaced by a plurality of walls. Each of the plurality of walls has a substantially equal width. At least one transverse wall may also be provided such that the walls define a grid spacing a series of rectangular or triangular cavities.

The invention belongs to the technical field of metal plastic deformation and particularly relates to a rotary forging forming method for a metal circular plate. The method comprises the steps of rod annealing, cutting and blanking, blank surface lubricating, rotary forging forming, trimming removal, thermal treatment, obtaining of the finished circular plate and the like. According to the rotary forging forming method for the metal circular plate, large deformation machining of the metal circular plate can be conducted through a small-tongue rotary forging machine, the manufactured metal circular plate has the excellent structure property, the blank deformation is uniform, the metal streamline is complete and radial, the aeolotropism of the rolled plate is avoided, generation of a great amount of leftover materials is avoided, the material utilization rate is high, small or zero cutting machining can be achieved, metal materials are saved, the production efficiency is high, the production process is easy to operate, and the rotary forging forming method is suitable for batch production.

The invention discloses a positioning method for a wrapped sand core and a positioning structure for a foundry sand core, aiming at providing a positioning method for a wrapped sand core and a positioning structure for a foundry sand core which have reliable and steady sand core positioning, high production efficiency, realize casting with a complex cavity inner structure easily and improve the qualified rate of castings effectively. The positioning structure comprises a main sand core and a sub sand core, wherein product molding parts and embedding par are arranged on the main sand core and the sub sand core; the positioning method comprises the following steps of: firstly, dividing the main sand core into a first main sand core and a second main sand core; forming dividing surfaces on the first main sand core and the second main sand core; then arranging limiting slots for containing the embedding part of the sub sand core on the dividing surfaces of the first main sand core and the second main sand core; and finally, clamping the embedding part of the sub sand core in the limiting slot through the first main sand core and the second main sand core, and positioning the first main sand core, the second main sand core and the sub sand core on a mould through the embedding part of the main sand core.

The invention relates to a method for powerful hot spinning precision plastic forming of hollow train axle blanks, which belongs to the technical field of plastic forming of long shaft parts, and mainly solves the problems of difficulty in manufacturing hollow train axle molds and complicated manufacturing processes. The invention includes several steps of material preparation, heating, feeding, spinning, and finishing. The powerful hot spinning technology is used to control the rotation speed of the workpiece, the feed speed of the rotary wheel, and the axial movement of the rotary wheel frame through the numerical control technology. Speed, spinning out high-precision hollow train axle blanks, realizing rapid and precise plastic forming of hollow train axle blanks. The invention has the advantages of simple manufacturing process, good metal fiber flow direction, small machining allowance, high material utilization rate, dieless forging and low manufacturing cost, and is suitable for mass production of various types of hollow train axles.

A tool changer is composed of a support shaft, a forward / backward movement drive motor moving the support shaft upward and downward, a rotation drive motor rotating the support shaft about an axis, a tool change arm having tool grippers formed at both ends thereof, and an air blow mechanism discharging compressed air to a tool and a next tool gripped by the tool grippers. In tool change using this tool changer, in a positioning operation, the tool change arm is rotated by degrees and compressed air is discharged toward the tool and the next tool by the air blow mechanism.

The invention discloses a precision forming method of a large high-strength aluminum alloy forged piece. The precision forming method comprises the steps of designing a forged piece and a mould, designing and manufacturing a prefabricated blank, forming the prefabricated blank into the forged piece in an isothermal forging manner, and the like. With the precision forming method, a large complicated aluminum alloy forged piece with a high-strength plate can be manufactured; compared with a casting piece, the forged piece is more compact in structure and fewer in defects, and the machining treatment required by the forged piece is little; the forged piece belongs to a near net shape forming precision forged piece; the product quality is greatly improved.

A method of manufacturing a hollow aerofoil component for a gas turbine engine includes using a capping panel to cover a pocket in a pocketed aerofoil body. During manufacture, the outer surface of the capping panel is located relative to the pocketed aerofoil body. This ensures that the outer surface of the capping panel is located as accurately as possible. This means that the capping panel can be made to be as thin as possible, which in turn reduces weight and material wastage. Once the capping panel has been located in position, it may be welded to the aerofoil body in order to produce the hollow aerofoil component.

The present invention provides a casting / hot forging die having a forming surface and an opposing rear surface. The rear surface has a plurality of cavities spaced by a plurality of walls. Each of the plurality of walls has a substantially equal width. At least one transverse wall may also be provided such that the walls define a grid spacing a series of rectangular or triangular cavities.