60results about How to "Reduce contact length" patented technology

A data line connection which comprises a base printed circuit board, a female connector mounted to the base printed circuit board, and a compensation printed circuit board mounted within the female connector. The compensation printed circuit board mounts a plurality of electrically conductive contact elements as well as a compensation circuit for reducing electrical interference. The base printed circuit board includes a further compensation circuit for further reducing electrical interference.

A muffler for an exhaust system of an internal combustion engine, comprises a housing comprising a shell having an inner wall, an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe extending into an inner space of the housing, for conveying an exhaust gas stream into and out of the inner space of the housing, at least one baffle arranged in the inner space of the housing, the baffle comprising a baffle plate, the baffle plate having a circumference, and a baffle lip arranged at the circumference of the baffle plate, the baffle lip engaging the inner wall of the shell and having an end portion, wherein the end portion of the baffle lip is curved inwardly away from the inner wall of the shell.

A method for manufacturing a thin film transistor array panel includes; forming a gate line including a gate electrode and a height increasing member on a substrate, forming a gate insulating layer on the gate line and the height increasing member, forming a semiconductor, a data line including a source electrode, and a drain electrode facing the source electrode and overlapping at least a portion of the height increasing member on the gate insulating layer, forming a first insulating layer on the gate insulating layer, a data line and the drain electrode, forming a light-blocking member on a portion of the first insulating layer corresponding to the gate line and the data line, forming a color filter in an area bound by the light-blocking member, forming a second insulating layer on the light-blocking member and the color filter, and patterning the second insulating layer, the light-blocking member or the color filter, and the first insulating layer to form a contact hole exposing a portion of the drain electrode aligned with the height increasing member.

A retainer of a tapered roller bearing includes crossbars having guide surfaces which circumferentially contact the tapered rollers, and formed with first recessed surfaces and second recessed surfaces which are both in the form of cutouts circumferentially recessed from the respective guide surfaces, to reduce stirring resistance and shear resistance of oil. To reduce the contact lengths between the rolling surface central portions of the tapered rollers and the guide surfaces, the guide surfaces are smoothly convex in the longitudinal direction of the tapered rollers.

The invention discloses cutting rollers of a multi-wire cutting machine for point contact of a metal wire and a workpiece during cutting. The multi-wire cutting machine comprises a rack (11), and is characterized in that: the rack (11) is provided with a rocker panel (7) driven by power, and a cutting roller set consisting of the cutting rollers (8) is arranged on the rocker panel (7) through a support seat (10). The cutting roller has a simple structure; the reciprocating swing cutting roller is adopted, and the workpiece is in point contact with a cutting wire array, so the contact face length of the cutting metal wire and the workpiece is greatly reduced, the cutting resistance is weakened, the abrasion of the cutting metal wire is also reduced, and the service life of the cutting metal wire is prolonged; and meanwhile, the abrasive better enters a shear mark in the swing process of the cutting roller, so the cutting capability is improved, and the cutting precision is also improved.

The invention relates to a friction feeder for receiving a plurality of threads from one or more corresponding thread delivery devices and feeding at least one of the threads to a thread-processing point of a knitting machine. At least two rollers arranged parallel to each other receive the threads and transport the threads in that the threads are carried along by the rollers by friction on the roller surfaces. A deflecting element is used to adjust the carry-along force applied by the rollers to at least one of the threads, wherein the rollers are arranged in such a way that the threads can be wrapped around both together at least once. The deflecting element can be set in such a way that the deflecting element deflects the thread or threads in a section of the course of the thread wrap between the rollers in such a way that the angle of wrap of the thread or threads around the rollers and thus the contact length of the thread or threads with the roller surfaces can be increased or decreased.

A coil spring has a spring wire wound in a coil shape having an outer diameter side portion and an inner diameter side portion on a peripheral shape in a cross section thereof, one of the outer diameter side portion and inner diameter side portion formed in a semi-circular shape expressed by x²+y²=b², the other thereof formed in a non-circular shape with a long diameter “a” and a short diameter “b” expressed by (x/a)^α+(y/b)^α=1, and value of the “α” set in a range of 1.85 to 2.45, and contact faces provided between the inner diameter side portion and the outer diameter side portion on the peripheral shape in the cross section such that each contact face comes into contact with a contact face of an adjacent coil in an axial direction along an axis line of the coil spring.

The invention discloses a slicing improvement method based on a cross-linked cable slicer, wherein the slicing improvement method comprises the following steps: selecting a cross-linked polyethylene cable to be sliced, and fixing the cross-linked polyethylene steadily on the slicer; firstly slicing on one side, then changing a certain angle, and making a cable insulating layer present a trapezoidal shape; and slicing the top end of the cable trapezoidal insulating layer according to a ruler of the slicer. By reduction of the contact length between a blade of the slicer and the cross-linked polyethylene insulating layer, the method avoids the problem of reduction of the accuracy because of upwarping due to excessive force in the cutting process or cable arching due to loose clamping. The method also effectively reduces the damage of a sample to the blade.

The invention relates to an indexable turning blade for high temperature alloy semifinishing under high-pressure cooling, and belongs to the technical field of turning tools. The turning blade comprises a turning blade body, the shape of the outline of the horizontal cross section of the turning blade body is hexagon, a fastening screw hole is formed in the geometrical center of the hexagonal turning blade body, a front cutter face is arranged on the outer periphery of the top face of the hexagonal turning blade body, and the six vertex angles of the hexagonal turning blade body are composed of three 80-degree angles and three 160-degree angles which are sequentially and alternatively arranged; arc cutter tips are arranged at the three 80-degree angles of the hexagonal turning blade body, negative chamfered edge cutting edges are arranged at the six outer edges of the top face of the hexagonal turning blade body, and protrusions are arranged nearby each arc cutter tip; and fold line step-shaped chip breaker grooves are arranged on the top face of the hexagonal turning blade body and the corresponding positions of the 160-degree angles on the front cutter face, chip grooves are composed of the fold line step-shaped chip breaker grooves and the front cutter face, and the bottom face of the hexagonal turning blade body is a blade installing supporting face. The indexable turning blade is used for high temperature alloy semifinishing under high-pressure cooling.

The invention provides a control method for reducing the length of surface scratch caused by a coiling machine auxiliary coiling device on an aluminum strip, and belongs to the technical field of nonferrous metal processing. According to the method, when a finish rolling unit begins rolling, the threading rolling is carried out at a relatively high threading speed; when the aluminum strip head portion enters a last housing rolling mill to generate a biting signal, the position of the aluminum strip head portion is tracked; when the tracking position of the aluminum strip head portion is largerthan the head speed reduction position, the finish rolling unit starts to decrease the speed to the coiling speed; and when the aluminum strip enters a coiling machine and the tension is establishedbetween the coiling machine and the last housing rolling mill, the coiling machine auxiliary coiling device is started, after a swinging arm of the coiling machine auxiliary coiling device is opened,the finish rolling unit starts to rise to the rolling speed, and then the follow-up steady-state rolling is carried out. According to the method, the length of the scratch caused by contact between the auxiliary coiling device and the surface of the aluminum strip in the head auxiliary coiling process can be effectively reduced, the yield of the product is improved, meanwhile, a high-speed threading and head low-speed coiling control method is adopted, so that the production efficiency is ensured while the yield is ensured.

A wing surface finishing method is the one in which after finishing of a leading edge and a trailing edge and finishing of a ventral portion and a back portion in a wing surface of a wing component are separated into separate steps, a finishing end mill is made to approach a ventral portion and a back portion of awing surface corresponding area of a workpiece after a speed of the finishing end mill is increased, finishing processing is applied to the ventral portion and the back portion of the wing surface corresponding area of the workpiece, respectively, and the speed of the finishing end mill is decreased after the finishing end mill is moved away from the wing surface corresponding area of the workpiece.

The invention discloses a bucket cylinder, and belongs to the technical field of oil cylinder development. The bucket cylinder comprises a cylinder component and a piston component, wherein the piston component sleeves the inner circumferential surface of the cylinder component; a piston rod of the piston component is adhered to the inner circumferential surface of a small circular inner diameter part of a guide sleeve of the cylinder component; an annular gap is formed between the piston rod and the inner circumferential surface of the large circular inner diameter part of the guide sleeve; the piston of the piston component is adhered to the inner circumferential surface of the cylinder of the cylinder component; the piston rod, a screw nut and a rear buffer sleeve of the piston component, and the cylinder bottom of the cylinder component form a rear buffer; a front buffer sleeve, the piston and the piston rod of the piston component and the and the guide sleeve of the cylinder component form a front buffer. Due to automatic flotation centering of the front buffer sleeve and the rear buffer sleeve, a good buffer effect is achieved, the requirement on the coaxiality of components is low, and the components are easy to process.

The invention discloses a bolt-free prepressing type large-displacement anti-deflection multidirectional displacement comb plate bridge expansion device, belonging to the technical field of bridge construction. The bridge expansion device comprises comb plates fixedly connected with a beam body and a supporting mechanism arranged under the comb plates. The key points are as follows: the bridge expansion device further comprises a middle comb plate arranged between the two comb plates, the supporting mechanism comprises supporting displacement boxes fixed to the lower portions of the comb plates and supporting cross beams arranged in the length direction of the beam body; the number of the supporting cross beams is at least two, all the supporting cross beams are arranged in the width direction of the beam body and fixed together through supports, the two ends of the middle comb plate are connected with the comb plates at the corresponding ends in an inserted mode respectively, and a positioning plate is fixed to the side face of the middle comb plate and connected with the supporting cross beam located on the outermost side through a connecting piece. The overall deflection resistance and multidirectional deflection capacity of the bridge expansion device can be improved, and vehicles can pass stably.

In a test for supporting diagnosis of periodontal disease, a test method, whose measurement result has reproducibility and can be an objective index, is achieved and the loss of a tooth is predicted by use of the obtained objective index. A periodontal disease diagnosis supporting device supports diagnosis of periodontal disease by use of a captured three-dimensional image of a tooth part. The device includes a tooth root adhesion degree measuring part for measuring a degree of adhesion between a tooth root and alveolar bone by use of the image. The device further includes a periodontal disease diagnosis supporting part for supporting diagnosis of periodontal disease by use of a measurement result of the measuring part.

The invention belongs to the technical field of vehicles, and discloses a connecting rod structure and an engine. The connecting rod structure comprises a connecting rod body and a connecting rod cover. The connecting rod body and the connecting rod cover are detachably connected through a connecting rod bolt. A connecting rod large head hole is formed between the connecting rod body and the connecting rod cover. A cutting contact surface between the connecting rod body and the connecting rod cover is not overlapped with the central plane of the connecting rod large head hole and is located onone side, close to the connecting rod cover, of the central plane. According to the connecting rod structure, if the length of the connecting rod bolt is unchanged, the contact length of the connecting rod bolt and the connecting rod body is increased so as to enhance the connecting strength between the connecting rod cover and the connecting rod body; and if the contact length of the connectingrod bolt and the connecting rod body is kept unchanged, the thickness between the bottom of a connecting rod bolt hole and the side wall of the connecting rod body is increased, and the situation thatthe wall thickness between the connecting rod bolt hole and the connecting rod body is too small, and bending deformation happens easily is avoided, so that the rigidity of a connecting rod large head is improved.

The invention discloses a high-strength square milling blade for titanium alloy machining and belongs to the technical field of tools for cutting machining to solve the problems that when an existing milling blade is used for machining a titanium alloy, the quality of machined surfaces is not high, a tool is abraded seriously, and the machining efficiency is low. The horizontal cross section of the milling blade is square, and a thread installation hole used for being fixedly connected with a cutter rod is arranged at the geometric center position of the milling blade in the thickness direction. The milling blade is provided with two tool noses. The two sides of each tool nose are provided with a main cutting edge and a polishing edge. The two main cutting edges are symmetrically arranged relative to the geometric center of the milling blade, and the two polishing edges are symmetrically arranged relative to the geometric center of the milling blade. Two sets of tapered protrusions are arranged on the front cutter face of the milling blade and are arranged adjacent to the two main cutting edges. A back cutter face comprising the main cutting edges on the milling blade is composed of a main cutting edge rear cutter face and a blade base rear cutter face from top to bottom, and the blade base rear cutter face is an oblique face with the lower portion inclining towards the inner side of the milling blade. The high-strength square milling blade is used for carrying milling on titanium alloy workpieces.