30results about How to "Reduce edge stress" patented technology

A locking differential for an automotive vehicle including a housing and a differential mechanism supported in the housing. The differential mechanism includes a pair of clutch members disposed in spaced axial relationship with respect to each other wherein each clutch member includes a groove disposed in an opposed inwardly directing face that is adapted to receive a cross pin. Each of the grooves includes a working surface extending laterally relative to each other. Each of the working surfaces defines a screw involute surface such that the cross pin contacts the working surface along a line extending in the direction of the cross pin in the event of differential rotation of an axle half shaft relative to the housing. Alternatively, each of the working surfaces defines a slightly convex surface in one plane such that the cross pin contacts the working surface at a point defined thereon. In another embodiment, the working surface defines a slightly convex surface in two planes such that the cross pin contacts the working surface at a point defined thereon.

A planetary gear bearing arrangement, including a planet carrier provided with a fixed bearing axis on which a planet gear is rotatably mounted via a sliding bearing that has a first antifriction layer on the axis side and a second antifriction layer on the gear side, wherein one of the two antifriction layers (8, 11) is created on a surface (10, 19) which is at least partially domed in the sliding region to reduce the edge pressure.

The invention discloses a curved surface solar energy automobile skylight and a manufacture method for the same, and particularly relates to a curved surface solar energy automobile skylight and the manufacture method for the same. The curved surface solar energy automobile skylight has curved-surface-shaped single layer or double-layer skylight glass; a solar energy battery sheet is composited on the inner side of the single layer skylight or between the double-layer glass; the solar energy battery sheet comprises a super-thin glass substrate, the curved surface shape of which is identical to or similar to the skylight glass; a first electrode, a photoelectric conversion layer and a second electrode are successively plated on the super-thin glass substrate; and the solar energy battery sheet is adhered to the skylight glass through a adhesive layer. The curved surface solar energy automobile skylight and the manufacture method for the same disclosed by the invention can greatly reduce the cracking and damage caused by the strain force in the process of lamination, can improve the yield and can reduce the manufacture cost.

The invention relates to the field of semiconductor device preparation, in particular to a wafer-level chip packaging method. In the wafer-level chip packaging method, bonding materials are arranged on the upper surface of the first wafer and the upper surface of the second wafer, and the bonding material is first subjected to a planarization process, and then the first wafer and the second wafer are The edge of the wafer is subjected to a grinding process, so that the edge stress of the wafer is reduced, so that the warpage becomes smaller, so that there is no crack at the bonding of the first wafer and the second wafer. By changing the order of flattening and grinding, Reduce wafer edge warpage to improve wafer quality.

The invention discloses a chip mounter for a bump wafer, and belongs to the technical field of semiconductor packaging. The chip mounter comprises a chip mounting base for bearing the bump wafer to be mounted, a Waferring platform mounted around the chip mounting base, and a coffer dam arranged between the chip mounting base and the Waferring platform, wherein a threaded through hole facing to the center of the chip mounting base is formed in the side surface of the Waferring platform; the height difference between the top of the coffer dam and the top of the chip mounting base is h, and the value of H-h is not less than 0 micron and not more than 50 microns; a boss which extends down is arranged at the lower part of the coffer dam; the coffer dam is connected with the chip mounting base through a fixing device; a blind hole facing to the center of the chip mounting base is formed in the outer side surface of the fixing device; a through hole perpendicular to the blind hole and a flat screw for connecting the through hole with the blind hole are formed over the blind hole, and the tail of the blind hole is matched with the boss. According to the chip mounter, the chip mounting base and the Waferring platform are designed and the coffer dam is added between the chip mounting base and the Waferring platform, so that the problems of easy fragmenting, cracking and the like of edges in a bump wafer mounting process are solved.

The invention relates to a cam follow-up device of an engine, comprising a follow-up body, a roller and a roller pin, wherein one end of the follow-up body is connected to an engine cylinder body through a mounting shaft arranged in a mounting shaft through hole, the lower part of the other end of the follow-up body is provided with a roller mounting slot, and the roller is arranged in the rollermounting slot through the roller pin. The device is characterized in that the upper part of the other end of the follow-up body is fixedly provided with a ball socket base, and the upper end surface of the ball socket base is concavely provided with a ball socket groove matched with the ball end surface of a push rod; the ball socket base is provided with an axial through hole, a radial hole and an inclined hole; the axial through hole is communicated with a first oil containing hole and communicated to the roller mounting slot; the radial hole is communicated with a second oil containing hole and communicated to the inner wall of the mounting shaft through hole; and the inclined hole is communicated with a third oil containing hole and communicated to the inner wall of a roller pin mounting hole as well as communicated to an oil containing tank through a radial straight oil hole and an inclined oil hole. The invention has the advantages of artful and reasonable structure, excellent property, wear resistance, high pitting corrosion resistance, good lubricating property and long service life.

The invention provides a forming device, comprising: a bearing part, a groove is arranged on the bearing part, the groove has a bottom wall and a side wall connected with the bottom wall; and a forming part, the forming part Set on the bottom wall and spaced from the side wall, the forming part has a top surface away from the bottom wall, the top surface is used to carry the product to be formed; the opening profile of the groove is the same as The contours of the edges of the top surface are the same. The molding device provided by the present invention, by setting the contour of the opening of the groove of the molding part to be the same as the contour of the edge of the top surface of the molding part, helps to improve the stress on the film material during the thermoplastic molding process, which causes the optical properties of the film material to be affected. The problem.

The cam follower roller device comprises a tappet body 12, a pin 14 and a roller 16 mounted on said pin, the tappet body comprising holes 12b, 12c for mounting pin ends 14b, 14c of said pin on said tappet body. The device further comprises one deformable ring 18, 20 disposed between each pin end 14b, 14c of said pin and an inner wall of the associated hole 12b, 12c of said tappet body.

The invention provides a large steel welded vertical oil tank. The large steel welded vertical oil tank is provided with a tank bottom, a tank wall and a tank top. A transition connecting ring is arranged between the tank bottom and the tank wall and provided with an annular bottom section, an arc-shaped transition section and a vertical cylindrical section. The tank bottom is connected with the annular bottom section of the transition connecting ring in a welded mode. The tank wall is connected with the vertical cylindrical section of the transition connecting ring in a welded mode. The tank top can be a fixed top and can also be an outwards-floating top. The large steel welded vertical oil tank has the advantages that T-shaped joints of a tank wall and a tank bottom of an existing large oil tank and large fillet welds on the joints are omitted, main danger points of the whole oil tank are eliminated, and safe operation of the large oil tank is guaranteed, wherein the transition position between the tank wall and the tank bottom is not prone to low-cycle fatigue damage, an attachment weld of the transition portion between the tank wall and the tank bottom is not prone to tearing damage, the anti-seismic property of the large oil tank is greatly improved, and the anti-seismic property of the large oil tank is good.