319results about How to "High geometric accuracy" patented technology

According to one embodiment of the invention, a system for fabricating a part includes a computer operable to control the fabrication of a three-dimensional part using a solid CAD model, a deposition station operable to deposit successive two-dimensional layers of material to fabricate the three-dimensional part, and a machining station operable to remove at least a portion of one or more of the deposited two-dimensional layers of material. The deposition station includes a substrate on which to fabricate the three-dimensional part, a welding-based deposition system having a welding torch, a laser-based deposition system having a laser head, a plasma powder cladding system having a plasma torch, and a multi-axis robot operable to, when directed by the computer, utilize one of the welding-based deposition system, laser-based deposition system, and plasma powder cladding system to deposit any of the two-dimensional layers of material. The machining station includes a multi-axis milling machine and an automatic tool changer. The milling machine is operable to, when directed by the computer, select from a plurality of machining tools associated with the automatic tool changer for use in the milling machine.

The invention relates to an electroplastic incremental forming device and an electroplastic incremental forming method for plates. The device comprises a five-axis numerical control forming machine tool, a six-axis parallel robot machining system, a plate forming clamp, a high energy pulse power supply, an infrared thermometer, and a compressed air cooling system embedded in the machine tool, wherein an upper forming pressing head is arranged at the tail end of a spindle of the five-axis numerical control forming machine tool; the six-axis parallel robot machining system is arranged on a working table of the machine tool; the top of the six-axis parallel robot machining system is provided with a lower forming pressing head; the plate forming clamp is fixed on the working table of the machine tool; positive and negative poles of the high energy pulse power supply are connected with the upper forming pressing head and the lower forming pressing head through high current-carrying conductors respectively so as to form a current loop among the high energy pulse power supply, the upper forming pressing head, the lower forming pressing head and the plates; a camera of the infrared thermometer is aligned with a central area of each plate; and the compressed air cooling system is aligned with a forming area of each plate. Compared with the prior art, the invention has the advantages of high efficiency, energy conservation, high machining precision, high surface quality and the like.

The invention discloses a method for manufacturing an aluminum liner of a vehicular composite cylinder, which is used for manufacturing the aluminum liner of the vehicular composite cylinder. The aluminum liner consists of a thin-walled cylinder body of the aluminum liner, an end enclosure gradually thickening part and an opening part. The aluminum liner is manufactured by adopting a method of reducing the wall thickness of a thick-wall aluminum pipe by over 60 percent by one time of rotary pressing by a 450 strong spinning reduction machine, forming the end enclosure part and the opening part by using a 412 spinning necking machine, and machining the connecting threads on the opening part after solution ageing heat treatment. The aluminum liner of the vehicular composite cylinder has the advantages of high quality, large diameter, thin wall thickness, small weight capacity ratio (weight / capacity), high geometric dimensioning accuracy, high quality of inner and outer surfaces and the like, and has the excellent application and market prospects.

A chemically strengthened glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD, wherein a strengthened formed by chemical strengthening exists on the outer edge surface and on the inner edge surface but substantially not on a surface on which an information recording layer is formed.

The invention relates to a forging process of a bearing ring. The process includes following steps that: 1) in first firing, a medium-frequency induction heating furnace is adopted to heat an ingot to 1200 DEG C, dead head pressing, chamfering and sprue filing are performed; 2) in second firing, re-heating, upsetting and drawing out are performed on the machined ingot; 3) in third firing, re-heating, upsetting, rotary flattening, punching and reaming are performed on the machined ingot; 4) in fourth firing, the machined ingot is re-heated, and upsetting is performed on the machined ingot in a mold ring, so that the machined ingot can be in a technique size, the mold is removed, and reaming is performed on the machined ingot, so that the machined ingot can be in a technique size, and total forging ratio is controlled to be larger than 5; 5) groove turning is performed, the machined ingot is subjected to cold rolling and reeling on a closed shaping and reaming machine, and rolling paths and chamfered angles are molded with one step, truing is performed, and two end surfaces are subjected to soft grinding; 6) the machined ingot is pre-heated to 800 DEG C to 850 DEG C, after crack detection is performed, when the temperature of the machined ingot is lower than 450 DEG C, the machined ingot is put into the furnace so as to pre-heated to 600 DEG C to 650 DEG C, and heat preservation is performed on the machined ingot, and the machined ingot is put in to the furnace of which the temperature ranges from 950 DEC C to 1000 DEC and is rapidly heated to 1140 DEC C to 1200 DEC C, and water quenching is performed, and instantly, tempering from 550 DEC C to 600 DEC C is performed on the machined ingot, and the machined ingot is cooled to 400 DEC C to 450 DEC C in the furnace, and the machined ingot is taken out from the furnace and cooled. With the forging process adopted, inherent defects of metal can be eliminated, and the service life of a bearing can be prolonged.

The invention relates to a precise roll forming method for bimetallic rings. The method comprises: S1, obtaining an outer ring blank and an inner ring blank; S2, assembling the outer ring blank and the inner ring blank; S3, placing a core roller in the inner ring blank; S4, placing a drive roller outside the outer ring blank; S5, driving the drive roller to rotate through a drive device and driving the core roller to perform linear feed movement radially, wherein the outer ring blank and the inner ring blank are attached closely constantly to produce continuous local plastic deformation with the wall thickness reducing and the diameter expanding; and S6, stopping feed of the core roller and getting the core roller back when the outer diameter of the outer ring blank reaches a preset value of the outer diameter of a bimetallic ring. According to the precise roll forming method, the bimetallic ring is formed integrally through one step through continuous local plastic deformation, so that the method has the advantage that energy and materials are saved, the production cost is reduced, and the yield is improved. The bimetallic ring interface contact quality is good, the connection strength is high, and requirements of service performances and service lives of high-performance bimetallic rings can be met.

The invention provides a clamping and positioning device for machining a gas turbine power turbine guide vane datum face, and relates to the clamping and positioning device. The clamping and positioning device aims to solve the problems that no special fixture device exists in the existing machining process of gas turbine power turbine guide vanes, assembling and positioning of steam passages are inconsistent with assembling and positioning of steam passage circular arcs, and the steam passages are damaged. The clamping and positioning device comprises a fixture, a first screwing device, a second screwing device, three positioning cylindrical pins, three positioning round head pins, four auxiliary lifting adjusting and supporting devices, four pressing devices and six positioning bases. The first positioning base, the second positioning base, the third positioning base, the fourth positioning base, the fifth positioning base and the sixth positioning base are correspondingly installed on the upper end face of the fixture according to the positions of six datum points for machining workblanks of the gas turbine power turbine guide vanes. The first screwing device, the second screwing device, the four pressing devices and the four auxiliary lifting adjusting and supporting devices are arranged on the upper end face of the fixture. The clamping and positioning device is used for positioning and machining of the gas turbine power turbine guide vanes.