33results about How to "Reduce mechanical deformation" patented technology

In sophisticated semiconductor devices, the initial strain component of a globally strained semiconductor layer may be substantially preserved during the formation of shallow trench isolations by using a rigid mask material, which may efficiently avoid or reduce a deformation of the semiconductor islands upon patterning the isolation trenches. Consequently, selected regions with high internal stress levels may be provided, irrespective of the height-to-length aspect ratio, which may limit the application of globally strained semiconductor layers in conventional approaches. Furthermore, in some illustrative embodiments, active regions of substantially relaxed strain state or of inverse strain type may be provided in addition to the highly strained active regions, thereby enabling an efficient process strategy for forming complementary transistors.

The invention discloses a machining technology for a base of a band sawing machine. The machining technology overcomes the defects of poor firmness and poor welding sealing performance which generally exist during machining for the base of the band sawing machine at present. According to the technical scheme, the machining technology is characterized by comprising the steps that b, a placement plate is arranged at the position, corresponding to a movable clamp and a fixed clamp, of the upper surface of a bottom frame in a full welding manner; c, bottom plates are welded at the positions, at water tanks and an oil tank, on the lower surface of the bottom frame in a full welding manner; d, diesel oil is evenly smeared to the inner side walls of the water tanks and the oil tank and the interiors of the bottom plates, and the oil leakage phenomenon of weld cracks of the water tanks and the oil tank is checked after 50 min to 70 min; e, top plates are arranged at the positions, at the water tanks and the oil tank, on the upper surface of the bottom frame in a full welding manner; f, cover plates are arranged at the portion, besides the placement plate, on the longitudinal part of the bottom frame in a full welding manner; and g, adjusting plates which are horizontally arranged are evenly arranged at the positions, close to the side edge, of the bottom of the bottom frame, and reinforcing ribs are arranged at the positions of the side edge of the bottom frame. The beneficial effects that the band sawing machine is firm in structure, and gaps do not exist at welded positions are achieved.

An axial passive magnet bearing system utilizes the friction-less characteristic of non-contact type permanent magnet bearing to minimize the disadvantages induced by frictions. For example, both the energy and material loses of the mechanical bearing. Two permanents magnet are made of permanent magnet materials and positioned over two opposite surfaces of two mechanical structures, where mechanical bearing(s) is located therebetween. Hence, the magnetic force between the two magnets can improve some disadvantages among the two mechanical structures and the mechanical bearings, such as friction and energy loss.

The invention discloses a rotary cutting device for evaporation tubes, which comprises a motor, a rotary guide body, a blade, a pneumatic radial pushing mechanism, a cutting support mechanism, and a rotary air supply mechanism. The rotating guide body is an integrated structure composed of a tube body and a ring disc, and a tube hole is arranged on the central axis. The rotating guide body can rotate under the drive of the motor. The pneumatic radial pushing mechanism, the cutting supporting mechanism and the blade are installed on the rotating guide body and can rotate with the rotating guide body. The pneumatic radial pushing mechanism is used to drive the blade to move radially on the ring disc. The rotary air supply mechanism is used to provide compressed gas for the operation of the cylinder when the cylinder rotates with the rotary guide body. When the invention works, the blade rotates around the axis of the evaporation tube to cut off the evaporation tube, so that when the evaporation tube is cut off, the incision is relatively smooth, and the blade is pushed to the center of the evaporation tube, even if a burr is generated, it is toward the inside of the evaporation tube. This will not affect the front connection installation after evaporation.

The invention discloses a magnetic wave instrument magnetic core forming machine which comprises a heat treating forming groove frame combination device for a rod-shaped magnetic core, a lifting column device, a magnetic core tape winding machine magnetic core tape coating fluid container groove, a hot-air drying device and the like. The heat treating forming groove frame combination device for the road-shaped magnetic core is composed of a straight-groove-shaped magnetic core forming groove frame, a pressing plate and a forming groove combination device. The rod-shaped magnetic core is located in a straight groove and pressed tightly by the pressing plate and the combination device, wherein the width of the pressing plate is same as that of the straight groove. Moreover, the magnetic wave instrument magnetic core forming machine comprises a rotating device, an alignment clamping device, a submerged rolling shaft and a raw material rolling shaft support. The magnetic core tape winding machine magnetic core tape coating fluid container groove is composed of a rectangular hexahedron type plastic container groove, wherein the lifting column device and a liquor stirrer are installed at the bottom of the plastic container groove. The hot-air drying device is a magnetic core tape coating quick-drying device which is located above the liquor level of the magnetic core tape coating fluid container groove and fixed in the middle of a lifting column with a hot-air blower as a body.

The invention discloses a novel active air foil bearing. The bearing comprises a shaft sleeve, the PZTs, the flexible hinges, rigid push rods, precompression exertion devices, wave foil and top foil; the shaft sleeve is machined through wire cutting, three PZT mounting through grooves circumferentially and evenly distributed, the corresponding flexible hinges and the corresponding rigid push rods are obtained, the top ends of the rigid push rods are flush with the inner cylindrical face of the shaft sleeve, the PZTs are mounted in the through grooves, the corresponding precompression exertion devices are designed for the PZTs, the wave foil is formed by pressing of elastic materials, and is arranged on the shaft sleeve and the inner cylindrical faces of the rigid push rods, one end of the wave foil is welded to the inner round face of the shaft sleeve, and the other end of the wave foil is free. The top foil is arranged on the wave foil in a covering manner. Through control over power supply signals of the PZTs, the PZTs mechanically deform, the flexible hinges are enlarged to deform, and are supported through the rigid push rods to be attached to the wave foil on the push rods and the inner wall of the shaft sleeve, a gap between a bearing and a supporting rotor is changed, the wedge space is increased, the crossed coupling effect is weakened, the bearing dynamic pressure effect is enhanced, the rigid characteristic of the bearing is improved, and finally the aims of actively controlling the rigidity characteristics of the bearing and improving the stability of the bearing are achieved.