2702 results about "Circular cone" patented technology

A method for correcting cone gear includes utilzing three dimensional moulding CAD software to confirm correction amount, finalizing tooth profile correction for theory evolute line and finalizing tooth alignment correction for scanning trace line, structuring gear correction mode by using two corrected lines and converting the model to be digital control codes inputted to digit controlled machine, processing semifinished product directly to the form of corrected gear, gear electrode or gear model.

The invention relates to a double diffusion intussusception forge technique of a bearing ring of a tapered roller, belongs to the technical field of forging of the bearing ring of the tapered roller and mainly aims at solving the problems that the existing ring forging technique is not suitable for various bearing rings of the large and medium size tapered rollers. The technique is mainly characterized in that: (1) a GCr15 steel material section is heated to 1050 DEG C on a medium frequency induction furnace, then upset on a press, extruded backward and forward, formed, sheathed respectively and is separated into an outer sleeve and an inner sleeve or a small outer sleeve blank; (2) the outer sleeve blank is ring-rolled on a ring rolling machine, then reeled on the press and cooled into an outer sleeve forged parts of a bearing; and (3) the inner sleeve or the small outer sleeve blank is placed on the press, upset again, extruded and punched and then a ring part is obtained which is ring-rolled on the ring rolling machine, then an inner sleeve hot forged part after being ring-rolled is reeled on the press and then cooled to obtain the inner sleeve forged part of the bearing. The technique is mainly used for manufacturing the inner and outer ring forged parts of the bearing of the large and medium size tapered roller with various types, small batch or large batch.

A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone is formed from steel and includes a plurality of cutting elements disposed at selected positions about the cone. At least one of the cutting elements has an extending body which has a first end coupled to the roller cone and a distal end extending away from the cone. The extending body is formed from steel. A super hard element is coupled to the distal end of the extending body to form a super hard cutting face for the cutting element.

The present invention generally relates to the field of microwave antennas, and, more particularly, to a number of three-dimensional designs for the radiation element of an ultra-wideband monopole antenna with a symmetrical omni-directional radiation pattern operated in the frequency range between 3.1 GHz and 10.6 GHz. Said antenna is connected to the analog front-end circuitry of a wireless communication device used for transmitting and/or receiving microwave signals and meets the FCC requirements in terms of antenna gain, radiation pattern, polarization, frequency bandwidth, group delay, and size. It comprises a radiation element consisting of an air- and/or dielectric-filled cavity structure with a base plane and a radiator plane. A metallic ground plane having a relatively high surface impedance to electromagnetic waves within said frequency range, which is printed on a dielectric substrate, serves as a reflector. The monopole antenna further comprises an antenna feeding circuitry used for electronically steering the symmetrical omni-directional radiation pattern and a feeding line connecting the antenna feeding circuitry with the base plane of the radiation element. Thereby, parts of the analog front-end circuitry can optionally be placed within the air-filled part of the radiation element of the antenna. The proposed designs include a radiation element having the form of a truncated right circular cone, rotational-symmetric radiation elements with a convexly- or concavely-shaped 3D surface, respectively, a radiation element in the form of a truncated right regular pyramid with a square base plane, and radiation elements with a combined structure comprising a conical, pyramidal, convexly- or concavely-shaped first part and a closed cylindrical or cuboidal second part whose top plane is arranged on top of the congruent base plane of said first part. Further embodiments include radiation elements with the form of a radially notched cylinder or hemisphere as well as combined structures consisting of at least two convexly-shaped elements or two conical parts, respectively, stacked on top of each other.

A punched gimbal dimple with a coined, frusto-conical base in a head suspension and a method for producing such a dimple. The dimple has an apex and a base, the base having outer and inner surfaces which generally conform to conical frustums. The conical frustum half-cone angles differ by at least 2 degrees. The dimple and its coined base are fabricated by a dimple punch and die with mismatched punch tangent and chamfer angles. The coined dimple base can be more easily seen by optical systems for aligning a slider to the dimple.

A semiconductor inspection apparatus which is possible to inspect a plurality of semiconductor devices collectively at one time, which has conventionally been difficult because of precision or the like of probes. A method of manufacturing the semiconductor inspection apparatus comprises the steps of forming a cover film on a surface of the silicon substrate and forming a plurality of probes of a polygonal cone shape or a circular cone shape through etching after patterning by photolithography, after the cover film is removed, again forming a cover film on the surface of the silicon substrate and forming a beam or a diaphragm for each probe through etching after patterning by photolithography, after the cover film is removed, again forming a cover film on the surface of the silicon substrate and forming a through hole corresponding to the probe through etching after patterning by photolithography, and after the cover film is removed, forming an insulating film on the surface of the silicon substrate, forming a metal film on a surface of the insulating film, and forming a wiring lead through etching after patterning by photolithography.

As a traditional bamboo joint removing method is low in degree of mechanization and production efficiency, and consumes time and labor, the invention discloses a slitting and bamboo joint removing integrated machine for a bamboo billet cylinder, which aims to improve the production efficiency of bamboo processing, belongs to the technical field of processing machinery of bamboo products, and comprises a circular cutter, a solid cylinder, a solid circular cone, an outer cylinder, outer cylinder inner plates, an annular cutterhead, a cutter, a movable baffle plate, a power device, a fixing device, a receiving device, a feeding device and other devices that all form a complete machine. The slitting and bamboo joint removing integrated machine for the bamboo billet cylinder is a novel bamboo joint removing machine for the bamboo billet cylinder, and slits the bamboo billet cylinder and removes bamboo joints at the same time, so as to achieve the purposes of labor conservation and production time conservation, and meet the processing requirement for batch production at the same time.

The 3D human limb model building method based on image outline adopts rotating conic curved surface, and has joint points and line segments connecting the joint points to constitute skeleton layer to represent the human limb skeleton structure and rotating conic curved surface to represent the skin layer, with human limb skin deformation being reflected in two deforming parameters. Human limb edge contour information is first extracted from human limb image sequence obtained with binocular stereo vision system, the limb contours of the right and left images in different times are fitted with 2D conic curve, the deformation parameters of 2D conic curve equation are found out, corresponding 3D conic curve equation is found out and made to rotate around the skeleton line to find out the 3D rotating conic curved surface equation, and three spherical bodies and two rotating conic curved surfaces are adopted to draw human limb model. The method is simple and easy to realize.

The invention discloses a clamping and machining method for large thin-wall taper sleeves. Large thin-wall taper sleeves are cut repeatedly step by step on the basis of accurate locating to taper sleeves to be machined, and eventually, the accuracy requirements are achieved, and the problems that of difficulty in clamping and machining accuracy control and proneness to deformation of thin-wall taper sleeves are solved. The machining method comprises clamping and turning of outer taper faces, large end clamping and turning of small end internal taper faces of thin-wall taper sleeves, and small end clamping and large end internal taper face turning of thin-wall taper sleeves. The clamping and machining method is particularly applicable to clamping and turning of thin-wall taper sleeves of a great number of imported cone crushers applied in domestic mines at present.

A rolling cone drill bit comprises a plurality of bottomhole cutter elements positioned in a first circumferential row, wherein at least one of the cutter elements comprises a cutting portion extending from a base portion to a point furthermost from the base portion, defining an extension height. The ratio of the cross-sectional area of the cutter element at a point equal to ninety-four percent of the extension height to the cross-sectional area of the cutter element base is greater than 0.2. Moreover, the ratio of the extension height to the base diameter is not greater than 0.75.

A drill bit for cutting a borehole comprises a bit body including a bit axis. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body. Further, the drill bit comprises a cutter element having a base portion with a diameter and a cutting portion extending therefrom. The cutting portion comprising a first pair of flanking surfaces that taper towards one another to form a first elongate chisel crest, and a second pair of flanking surfaces that taper towards one another to form a second elongate chisel crest that intersects the first elongate chisel crest in top view. The first crest tangent angle at 10% of the diameter measured radially from the central axis on the first elongate chisel crest in profile view is greater than 75° and less than or equal to 90°.

The present invention relates to technical field of magnetic transmission in mechanical engineering, particularly a high temperature resistant high performance tapered slot type rotor asynchronous magnetic coupling, which comprises an outer rotor with magnetism, a inner rotor without magnetism, separation sleeve, and adjustable magnetic pole piece with teeth; the outer rotor comprises an outer rotor basal body and magnetic pole; the magnetic pole forms a certain helix angle with axial cord; the inner rotor comprises a inner rotor basal body, a magnetic induction prime conductor and end rings; the magnetic induction prime conductor embeds in angular deep groove of the inner rotor basal body in helical shape; the separation sleeve covers the inner rotor and is set between the inner rotor and the outer rotor; the adjustable magnetic pole piece with teeth is fixed on the machine body and can be disposed inside or outside of the separation sleeve; the outer magnetic rotor forms an outer layer air gap with the adjustable magnetic pole piece; the inner rotor forms an inner layer air gap with the adjustable magnetic pole piece. The above structure is disposed on the inside and outside circular conical surface to form circular cone asynchronous magnetic transmission. The advantages of the invention are as following: high temperature resistant, smooth, steady and reliable transmission, high usage of permanent magnet and big transmitting torque of unit volume.

A hybrid contact lens comprises a substantially rigid zone having an aspheric base curve with a given apical radius and a substantially flexible hydrophilic peripheral portion coupled to the substantially rigid zone, the peripheral portion having one of a plurality of radii, wherein a conic constant of the substantially rigid zone varies with apical radius, so as to provide a nearly constant deviation between the aspheric shape of the base curve and a sphere having a radius equal to the apical radius, regardless of the length of the apical radius.

A fuel injector is disclosed that has plural nozzle holes with the same cross-sectional shape and can individually set the flow rate of each nozzle hole. The fuel injector includes the plural nozzle holes, a seat section positioned upstream of the nozzle holes, a valve element that closes a valve when brought into contact with the seat section and opens the valve when separated from the seat section, and a circular cone tapered from an upstream end to a downstream end and provided with the seat section and an inlet opening of the nozzle holes. The plural nozzle holes have an identical shape and a shape of a cross-section of each of the nozzle holes is substantially out-of-round, the cross-section being perpendicular to a central axis of each of the nozzle holes. The cross-section of each of the nozzle holes is rotated around the central axis of each of the nozzle holes. A rotation angle of the cross-section is set in such a manner that a relationship between a conical surface of the circular cone and the rotation angle is different among at least two of the nozzle holes.

The invention provides a method for detecting a hook face circular hole based on a three-dimensional point cloud. The method comprises the steps that firstly, three-dimensional points on the edge of the circular hole to be detected on the point cloud are accurately extracted; then least square plane fitting is conducted on the edge points of the circular hole, so that an initial plane of a projection is obtained, the edge points are projected to the plane, and a coordinate system is converted, so that two-dimensional points of the projection are obtained; the radius of a least square circle and two orthogonal fixing rotary axes of the projection points are obtained; when the radius of the circle can not meet the judgment criterion of the circle, a least square plane respectively rotates around the two rotary axes, projection and iterative computation are conducted again until the radius of the circle meets the judgment criterion of the circle, so that the normal of the least square plane is the axial direction of the circular hole and the radius of the least square circle of the projection two-dimensional points is the radius of the circular hole. According to the method, the axial direction and the radius of the circular hole can be rapidly detected from the three-dimensional point cloud.

The invention is a suspension plate system for providing access to hanks of fiber. The system may include a circular, transparent, plastic disc having a plurality of truncated conic circular bores located equidistant from the center of the disc and being substantially equidistant from each other. Each bore has a larger diameter opening on the top of the disc and a smaller diameter opening on the bottom of the disc. A plurality of generally radial slots equal in number to the number of bores are located on the disc to communicate between each bore and the outer edge of the disc. Each bore provides a device wherein a hank of fiber, cut into substantially equal lengths to other hanks and divided by color and/or nature can be presented for display and use. The hank of fiber of like color and/or nature is bound by a knob-like binder that can be captured in one of the bores, with the hank of fiber suspended down from the disc, thus locking the hank of fiber in place relative to other hanks and to the disc. The binder is captured because its effective diameter is between the diameters of the upper and lower openings of the bore. The slot allows the hank of fiber to be axially placed within the bore without the hank having to be threaded longitudinally into the bore.

A pneumatic tank trailer includes a carriage and a tank supported on the trailer that can selectively discharge fluidizable material through hoppers of the tank. A nose portion of the trailer has a generally conical shape. The nose portion has a top that slopes downward and sides that taper inward as it extends forward. A cross-sectional center point of a front end of the nose portion is lower than a cross-sectional center point of a rear end of the nose portion along the height of the trailer. The length of the nose portion is at least 15% of the length of the trailer. Adjacent hoppers intersect at hopper crotches. The hopper crotches have short heights and the hoppers are arranged relatively close together.

The invention provides a three-hole probe type pressure measurement tail rake for a wind tunnel test. A plurality of connecting rods are distributed at the top end of a support platform; a three-hole probe is fixed on each connecting rod; a total pressure hole is arranged at the conical top end of each three-hole probe, and two static pressure holes symmetrically distributed on the conical surface of the three-hole probe, and the central line of the total pressure hole and the central lines of the two static pressure holes are in the same horizontal plane. According to the three-hole probe type pressure measurement tail rake, the actual total pressure, static pressure and airflow drift angle at each probe can be obtained through one total pressure hole and two static pressure holes on each probe; then, two velocity components u and v at each probe in the axial direction of a tunnel and in the horizontal plane of the height center of the tunnel can be obtained in combination with measurement of fluid density; according to the obtained static pressure distribution and the distribution of the two velocity components u and v at each three-hole probes, the resistance of a wing section can be obtained on the basis of the momentum theory, so that the two-dimensional velocity and speed drift angles of all points of wake flow can be captured at the same time. The three-hole probe type pressure measurement tail rake for the wind tunnel test is suitable for the situation that the lift force is large and the wake flow inclines to a lower wing face greatly.

The invention discloses a depth aperture internal diameter measurement device, comprising a tapered block, a sleeve, three measurement rods, a spring, a push rod, a sleeve rod, a thread sleeve rod, a three-claw chuck and an internal diameter dial indicator. The conical surface of the tapered block is uniformly provided with three sliding grooves which are formed along the generatrix direction of the tapered block; the included angle between each sliding groove and the axis of the tapered block is 45 degree; the wall of the sleeve is provided with three through holes which are uniformly distributed along the circumference; three measurement rods pass through the through hole in the wall of the sleeve; and one end of the measurement rod is clamped inside a sliding groove. In the invention, the included angle between the sliding groove and the axis of the tapered block is 45 degrees and the displacement of the measurement rod along the radial direction is turned into an axial direction, which avoids the intermediate transfer between the levers in the traditional measurement, has more accurate measurement and can measure the maximum and minimum diameter of any cross section.

The invention provides a patterned substrate, which comprises a substrate and a periodic pattern which is arranged above the substrate. The periodic pattern consists of m+1 circular cone frustums, elliptical cone frustums or polygonal prism frustums which are sequentially stacked in steps from bottom to top, or consists of m circular cone frustums or elliptical cone frustums which are sequentially stacked in steps from bottom to top, and one circular cone frustum, elliptical cone frustum or polygonal prism frustum. Through the microstructure of the periodic pattern, stress caused by lattice mismatch between a GaN epitaxial layer or the like and the substrate, and dislocation density in the GaN epitaxial layer or the like can be reduced, the crystal quality of the GaN epitaxial layer or the like is improved and the brightness of an LED (light-emitting diode) is better improved. The invention additionally provides a mask consisting of a circular array, elliptical array or polygonal array. The internal part of each circular, elliptical or polygonal area in the array comprises m+1 concentric circular rings, concentric elliptical rings or concentric polygonal rings with different transmittances. The invention additionally provides a method for producing the patterned substrate by using the provided mask. The method is easy to realize and the cost is low.

A data recording disk drive has damping plates with nonplanar surfaces for reducing flow-induced, out-of-plane vibration of the disks. The nonplanar damping plates reduce spindle motor torque, as compared with planar damping plates, while reducing the turbulent intensity. Each damping plate has a nonplanar surface that results in spacing between the plate surface and its associated disk surface that varies in the radial direction. The nonplanar surface may be a pattern of surface irregularities or features that may be arranged in concentric patterns, such as a pattern of concentric grooves, depressions or protuberances. The nonplanar surface may be shaped as a section of a conic surface so that in the radial direction the spacing between the damping plate surface and its associated disk surface varies linearly. For the disk surfaces facing the top and bottom of the disk housing, the nonplanar surfaces are applied to the top and bottom of the disk housing. Thus, in the single disk case, no separate damping plate is needed.

A method of assembling a filter element includes the initial step of forming a plastic filter casing with openings from a flat blank with opposite ends thereof bent towards one another and joining these opposite ends together by a sealing seam. Also, a resilient mat filter is folded into a cylindrical shape and pushed open on a fluid-permeable supporting pipe to surround and engage the surrounding pipe. The cylindrical shape of the mat filter has an exterior diameter prior to introduction into the casing that is larger than an interior diameter of the filter casing along the entire axial length of the mat filter. The mat folder is folded into a conical shape to facilitate its introduction thereof into the filter casing. After the axial end is formed, the mat filter and supporting pipe are introduced into the filter casing to define a filter chamber. Finally, two end caps are joined to the filter casing.