416results about How to "Low sliding resistance" patented technology

A press die composed of an upper die having a concave part (with the peripheral surface of the opening of said concave part functioning as a first blank pressing face), a lower die having a convex part (to form the blank into a desired form in cooperation with said concave part), and a blank holder (which has a second blank pressing face), said press die working in such a way that said first blank pressing face and said second blank pressing face hold a blank between them while permitting it to flow into said concave part during pressing, characterized in that at least either of said first blank pressing face and said second blank pressing face has a roughened surface with a plurality of striated projections which are formed in the direction inclined in a range of -25° to +25° (preferably approximately parallel) toward the circumferential direction of the edge of the opening of said concave part.The press die permits the blank to slide easily and hence prevents the blank from decreasing in thickness during press forming.

The invention discloses a rock sample in-situ fidelity coring system. The rock sample in-situ fidelity coring system comprises a driving module, a fidelity module and a coring module which are sequentially connected, the coring module comprises a rock core drilling tool and a rock core sample storage cylinder, the fidelity module comprises a rock core sample fidelity cabin, the driving module comprises a coring drill rig, and the coring drill rig comprises a drill rig outer cylinder unlocking mechanism; the rock core drilling tool comprises a coring drill tool, a core catcher and an inner corepipe, the coring drill tool comprises an outer core pipe and a hollow drill bit, and the drill bit is connected with the lower end of the outer core pipe; the lower end of the inner core pipe extendsto the bottom of the outer core pipe, and the inner core pipe is in clearance fit with the outer core pipe; and the rock core sample fidelity cabin comprises an inner coring cylinder, an outer coringcylinder and an energy accumulator, the outer coring cylinder sleeves the inner coring cylinder, the upper end of the inner coring cylinder communicates with a liquid nitrogen storage tank, the liquid nitrogen storage tank is located in the outer coring cylinder, the energy accumulator communicates with the outer coring cylinder, and the outer coring cylinder is provided with a flap valve. According to the rock sample in-situ fidelity coring system, the rock core is advantageously kept the state under the in-situ environment, the drilling speed can be increased, and the coring efficiency is improved.

The fuel pump 1010 is installed in a fuel tank for a motorcycle. The fuel pump 1010 comprises a motor 1012 and a pump 1013 driven by the motor 1012 for pressurizing sucked fuel. The motor 1012 is a brushless motor, and has a stator 1020, coils 1024 and a rotor 1030. Current-passage to the coils 1024 wound around the stator core 1020 is controlled on the basis of a rotational position of the rotor, and thereby the rotor 1030 is rotated. The rotor 1030 has a shaft 1032, a rotary core 1034, and a permanent magnet 1036. The rotor 1030 is rotatably mounted on the inner circumstance of the stator core 1020. The permanent magnet 1036 is mounted on the outer circumference of the rotary core 1034, and magnetized so as to form magnetic poles different alternately in the rotation direction on the side of the outer circumferential surface facing to the stator core 1020.

A fastener stringer continuous manufacturing apparatus which eliminates a necessity of increasing a size of a manufacturing apparatus and is capable of chamfering attaching legs of an engaging element which is produced continuously from a metallic wire rod having a Y-shaped section, securely and accurately, without changing a load and stroke of a pressurizing hammer, the manufacturing apparatus comprises a pair of chamfering punches each of which is disposed above the pressurizing hammer at a height corresponding to a preceding engaging element implanted to a fastener tape in advance, the chamfering punch reciprocating with respect to a side face of the preceding engaging element and having a chamfering face which chamfers outer ridge portions of right and left legs of the preceding engaging element.

The invention relates to a repeated bending test equipment of an optical cable, comprising a rack and a swinging rod, wherein the rack is provided with a motor; an output end of the motor is connected with a transmission device in a transmission manner; the side surface of the rack is provided with two bending testing wheels; the side surface of the rack is provided with a vertical sliding rail below the two bending testing wheels; the sliding rail is assembled with a counterweight sliding block which is provided with a lower clamp; the swinging end of the swinging rod is provided with an upper clamp; the transmission device comprises a crank sliding block mechanism; the sliding block of the crank sliding block mechanism is a strip-shaped sliding block, one side surface of which is provided with transmission teeth; the sliding block with teeth is meshed with a gear so as to form a gear rack transmission mechanism; and the swinging rod and the gear are fixedly connected into a whole along the radial direction of the gear. The motor drives a crank of the crank sliding block mechanism to rotate unidirectionally, the sliding block drives the gear to rotate in a reciprocating manner bytransmission teeth arranged thereon, and the swinging rod fixedly arranged on the gear outputs swinging. The motor can obtain swinging of the swinging rod without the need of positive rotation and negative rotation.

A wiper seal is less in sliding resistance that is encountered when the seal slides over a raceway surface of a guide rail, better in wear-proof quality, rich in durability, and further easy to steadily install it to a slider. The wiper seal is installed on one end of the slider in a linear motion guide system to wipe away foreign materials adhered on the guide rail. The wiper seal is made of polyester polyurethane foam having a reticular skeleton texture of three-dimensional construction including open-cells therein, the polyester polyurethane foam being squeezed or compressed into from ¼ to 1 / 20 in thickness to form a compact blank of three-dimensional construction having porosity therein. The wiper seal is set to come into sliding contact with the guide rail 1 to exert a positive interference of from 0.1 mm to 0.05 mm.

A bearing bush enabling the excellent advancing and retarding motions of a shaft member by eliminating a clearance between the bearing bush and the shaft member to exclude rattling therebetween, capable of reducing a load on dimensional control for both the bearing bush and the shaft member, and manufacturable at low cost and a compound movement device using the bearing bush. The bearing bush (4) pivotally supporting the reciprocating motion of the shaft member (1) in the axial direction comprises an accepting hole through which the shaft member (1) is inserted. Grooves (40) are repeatedly formed, at specified intervals, in the inner peripheral surface of the bearing bush which faces the accepting hole. The inner diameter of the accepting hole is formed equal to or smaller than the outer diameter of the shaft member (1) to press-fit the bearing bush to the outer peripheral surface of the shaft member (1) by so-called a shrink fitted state.