548 results about "Central plane" patented technology

An end mill for metal cutting including a body, the body having a cutting section extending axially rearward from a front end. The cutting section includes a plurality of radially protruding and axially extending teeth. Each tooth has a front cutting edge, wherein the front cutting edge extends axially rearward and radially outward from an axially most forward point of the respective cutting edge. When the body is rotated, the cutting edge of each tooth forms a line of intersection in a central plane containing the central longitudinal axis. Each front cutting edge is interrupted by at least two chip splitting grooves, such that the line of intersection of the front cutting edge with the interrupting chip splitting grooves includes outer crests, each being located on an imaginary convex curve, at least two inner troughs, and curve parts, extending from one respective trough to one respective axially closest crest.

A derailleur hanger includes a first portion and a second portion. The first portion includes a first part and a second part extending from the first part. The second part includes an axle receiving bore configured to receive a hub axle. The second portion is configured to support a derailleur. The first part includes a frame contact surface disposed in a reference plane extending perpendicular to a center axis of the hub axle in an installed state where the derailleur hanger is mounted to the hub axle. The second portion includes a first surface disposed on a first side of the reference plane. A vehicle center plane is positioned at a second side of the reference plane in the installed state. The second part is disposed on the first side in the installed state, and is disposed at least partially farther from the reference plane than the first surface.

A milling tool includes a first cutting portion having a first and a second cutting edge extending at the periphery of the first cutting portion along, or following a helical path around, a longitudinal axis of the milling tool. The first and second cutting edges are arranged such that, when the milling tool is rotated around its longitudinal axis, they form respective first and second lines of intersection in a central plane containing the longitudinal axis, wherein the first and the second lines of intersection are arcuate. The extension of the first cutting edge is different from the extension of the second cutting edge such that the first line of intersection is different from the second line of intersection.

A mirror image additive manufacturing method for a composite material component is characterized in that the position of a virtual central plane of the component is determined, and double laying heads symmetrical along the central plane are arranged on the two sides of the central plane; the double laying heads are respectively provided with heat sources; the double laying heads synchronously move along the laying track and mutually provide opposite supporting force, the angle of the supporting force is valued in the angle range between the normal direction of the central plane and the normal direction of the surface of the component, and when the normal direction of the central plane and the normal direction of the surface of the component are not collinear, the virtual central plane is updated according to the geometric center position of the current laid component; and the material spreading speeds of the double spreading heads are independently controlled. In order to solve the problems of large deformation and poor performance caused by unbalanced residual stress inevitably formed by traditional single-side heating, single-side pressurizing and single-direction laying, the invention provides a method for introducing opposite-vertex double laying heads on two sides of the component, so that small and balanced distribution of stress is ensured, and the manufacturing precision and quality of the composite material component are effectively improved.

A golf club head includes a center of gravity spaced less than 5 mm from a vertical center plane that is perpendicular to a striking face plane and extends through a striking face center. The golf club head also includes a first component having a first melting point and a first density and a second component having a second melting point higher than the first melting point and a second density less than the first density. And the second component (i) is at least partially encapsulated by the first component, (ii) extends into a hosel portion below a hosel bore, and (iii) has a mass less than about 5 g.

A hand-held grinding machine includes a disc tool having a machining face for machining a workpiece; a motor for driving a holder holding the tool arranged in a machine housing; a port for removing dust during machining; and an energy-storage-device interface for detachably connecting, using a connection interface, an energy storage device for supplying electrical energy to the grinding machine that includes an energy-storage-device housing extending along an energy-storage-device longitudinal central plane; and a handle for grasping and guiding the grinding machine forwards along the workpiece in a working direction parallel to a machine longitudinal central plane of the machine housing extending transversely to the machining face. The energy-storage-device interface is arranged relative to the machine plane and / or the connection interface is arranged relative to the energy-storage-device plane such that the energy-storage-device plane is distanced transversely from the machine plane when the device is on the energy-storage-device interface.

A mirror image additive manufacturing track compensation method for a composite material component is characterized in that two material deposition heads are symmetrically distributed along the center face of the component and synchronously move, and materials are stacked towards the two sides of the center face at the same time. A distance sensor is arranged on each deposition head, and the actual position of the deposited component is measured in the normal direction of the center face. And the compensation amount of the next track point is calculated and corrected in real time by calculating the deviation between the actual position and the theoretical position, recording the historical deviation and combining the curvature of the track point, so that the G code track of the double deposition heads is adjusted in real time. According to the method, the deviation between the component shape and the theoretical model in the additive manufacturing process can be effectively reduced, and the deposition precision and the forming quality are improved. In addition, according to the distance measurement method, a combination mode of sound wave distance measurement, photoelectric distance measurement, laser radar and visual fusion distance measurement can be selected, and the accuracy of real-time compensation is ensured.

A nail gun (100), comprising: a power assembly (20) which comprises at least an electric motor (21) and a transmission assembly (22); a trigger assembly (40) which comprises at least a cylinder assembly (41) and a striker assembly (42); and a housing assembly (10) which comprises at least a first housing (11) held by a user and a second housing (12) for accommodating at least part of the trigger assembly, wherein the power assembly is at least partially located in the first housing; and a distance D7 between the center of gravity of the nail gun and a central plane formed by a front-rear direction and an up-down direction of the first housing is less than or equal to 5 mm.

A system and method for fastening an impermeable membrane to includes a bracket having a horizontal planar element, a central planar element extending upwards from the horizontal plan element, a lip extending upwards from the horizontal plan element, the lip comprising a planar element with a height shorter than a height of the central planar element, a gap defined by the central planar element on one side and the lip on another side, the gap configured to accept and secure to a side of a fascia of a structure, arms extending upwards from the horizontal plan element, fasteners protruding from each of the arms and, a gap defined by the central planar element on one side and the arms on another side, the gap configured to accept and secure to construction material and impermeable membrane.

The utility model discloses an integrated power assembly suspension system of an off-highway dumper, which is horizontally arranged and comprises an engine suspension structure, a pair of first connecting pieces, a pair of second connecting pieces, a pair of third connecting pieces, a pair of fourth connecting pieces and a pair of fourth connecting pieces, and the first connecting pieces are symmetrically arranged on two sides of a central surface of an engine flywheel casing in the width direction of a power assembly; the left side and the right side of the front end of the engine are connected with the left frame and the right frame respectively; the gearbox suspension structure comprises a pair of second connecting pieces which are symmetrically arranged on the two sides of the center face of the engine flywheel shell in the width direction of the power assembly, and the left side and the right side of the rear end of the engine and the left side and the right side of the rear end of the gearbox are connected and then connected with the left frame and the right frame. The four-point type suspension system has excellent vibration damping performance, simultaneously avoids stress damage of a flywheel casing caused by insufficient support of a traditional four-point type suspension system on the premise of a large-torque power assembly, thoroughly solves the problem of difficulty in assembly and maintenance, and realizes that a power assembly system can still keep away from an upper wing surface of a frame in a limited frame space. And integrated hoisting and dismounting are completed.

The utility model provides a spoiler structure and an automobile wind-feeling-free air outlet. The spoiler structure comprises a middle shaft and a plurality of spoilers arranged on the middle shaft. When air flow passes through the air channel, the air flow needs to penetrate through the spoilers, and when the central axis faces of the spoilers are arranged to form acute angles or obtuse angles relative to the central axis, and the spoilers with certain angles rotate, the air flow penetrating through the spoilers can be continuously disturbed, and the direction of the air flow is continuously changed. When the air flow disturbed by the spoiler is led out from the air duct, the blowing disturbance feeling to passengers is weakened, so that the air duct still has a strong wind-feeling-free function under the condition that the occupied space of the air duct is small.

The present disclosure relates to a seat element comprising a padding and a cover arranged around the padding, the seat element comprising two longitudinal side edges, a first side of the seat element being located on one side of a longitudinal central plane, a second side being located on the other side of the longitudinal central plane, the seat element comprising a first coplanar interdigital electrode capacitive sensor arranged on the first side and a second coplanar interdigital electrode capacitive sensor arranged on the second side, the second capacitive sensor being distant from the first capacitive sensor in a longitudinal direction by a first distance of between 30 millimeters and 50 millimeters.

The utility model relates to an automatic cat litter basin which comprises a base, a roller, a driven tooth structure, a driving tooth structure and a driving device. The rollers form a central plane perpendicular to the rotating axis of the rollers, and the rollers are symmetrically or approximately symmetrically arranged according to the central plane. The driven tooth structures are arranged on the outer wall of the peripheral side of the roller and extend in the circumferential direction of the roller, and the driven tooth structures are symmetrically arranged according to the center face. The driving tooth structures are installed on the base, the driving tooth structures are symmetrically arranged according to the center face, the driving tooth structures are correspondingly engaged with the driven tooth structures, and the driving device is used for driving the driving tooth structures to move. When the roller is placed on the base, the driven tooth structure is meshed with the driving tooth structure, the driving device can drive the driving tooth structure, and then the roller is driven to rotate around the rotating axis.

The invention provides a glass substrate through hole processing method and device based on laser modification, which are applied to the technical field of laser processing, and the method comprises the following steps: superposing a target horizontal axis central plane of a determined Bessel beam non-diffraction propagation length target horizontal axis center with a thickness central plane of a to-be-processed glass substrate, then, the to-be-processed glass substrate is modified, so that the phenomenon that when the non-diffraction propagation length non-target transverse axis central plane coincides with the thickness central plane of the to-be-processed glass substrate, the non-diffraction propagation length non-target transverse axis central plane is not uniform due to different light beam diameters and energy intensities on the two sides of the non-diffraction propagation length non-target transverse axis central plane can be avoided; therefore, the upper part and the lower part, surrounding the thickness central surface, of the through hole of the obtained glass substrate can be uniformly modified, and the quality of subsequent through hole etching is further improved.

The utility model relates to an automatic cat litter basin which comprises a base, a roller, a driven tooth structure, a driving tooth structure and a driving device. The rollers form a central plane perpendicular to the rotating axis of the rollers, and the rollers are symmetrically or approximately symmetrically arranged according to the central plane. The driven tooth structures are arranged on the outer wall of the peripheral side of the roller and extend in the circumferential direction of the roller, and the driven tooth structures are symmetrically arranged according to the center face. And the driving tooth structures are mounted on the base, are symmetrically arranged according to the central plane, and are correspondingly engaged with the driven tooth structures. The guide structure is used for limiting movement of the roller in the rotation axis direction of the roller. The driving device is used for driving the driving tooth structure to move. When the roller is placed on the base, the driven tooth structure is meshed with the driving tooth structure, the driving device can drive the driving tooth structure, and then the roller is driven to rotate around the rotating axis.

The invention discloses a high-detection-efficiency groove silicon carbide neutron detector structure, and relates to the technical field of semiconductor neutron detection, a plurality of groove groups are etched on the top surface of a SiC substrate, and each groove group comprises groove units which are sequentially connected along the direction of a first central plane of the SiC substrate; each groove unit comprises a first groove and a second groove which are symmetrically arranged, and the bottom faces of the first grooves and the bottom faces of the second grooves are parallelograms which are symmetrically arranged. According to the neutron detector, the groove structure of a traditional neutron detector is improved, the filling area of the neutron conversion material is increased due to the arrangement of the through groove groups, meanwhile, the contact area of the neutron conversion material and the SiC region is also increased, the self-absorption effect of secondary particles is reduced, and the detection efficiency of the detector is remarkably improved.

A press wheel includes a hub configured to rotate about an axis. The press wheel may further include a mounting portion removably attachable to the hub and having a center plane substantially perpendicular to the axis upon removable attachment with the hub. The press wheel may further include a plurality of tread portions connected to the mounting portion and configured to define a circumferential portion of the press wheel. The plurality of tread portions may have voids between adjacent tread portions. Each tread portion of the plurality of tread portions may include a tine extending away from the center plane.

The utility model provides an all-terrain vehicle which comprises a vehicle frame, an engine and a main driving seat cushion, the engine and the main driving seat cushion are both installed on the vehicle frame, and a longitudinal center plane is a virtual plane which extends in the vertical direction and coincides with the left center line and the right center line of the vehicle frame. The bottom plane is a virtual plane which is located below the frame, extends in the front-back direction and is perpendicular to the longitudinal center plane, the geometric center of the outer contour line of the projection of the main driving seat cushion on the bottom plane is a point A, and the symmetric point of the point A relative to the longitudinal center plane is a point B; the all-terrain vehicle further comprises a plurality of flexible connecting pieces, the engine is flexibly connected with the vehicle frame through the flexible connecting pieces, the projection centers of the flexible connecting pieces on the bottom plane are points T, all the points T are located behind the line segment AB, and at least one point T is distributed on each of the left side and the right side of the longitudinal center plane. In this way, the adverse effect of vibration of the engine on the main driver seat cushion can be reduced, and the riding comfort of passengers is better.

The present disclosure relates to a seat backrest, the backrest extending in a longitudinal direction and a transverse direction, the backrest comprising: at least one first and one second coplanar interdigital electrode capacitive sensor arranged on a first zone of the backrest located above a horizontal central plane and on one side of a vertical central plane; the second capacitive sensor of the first zone being located above the first capacitive sensor of the first zone; the second capacitive sensor of the first zone being advanced by a first distance relative to the first capacitive sensor of the first zone in the direction of the central vertical plane.

The invention provides a cavity filter, and relates to the technical field of filters. The cavity filter comprises a shell part, the shell part is constructed to form a first cavity and a second cavity, and a first coupling window is constructed between the first cavity and the second cavity. Wherein the first cavity is internally provided with a 1 / 4 wavelength resonance unit, and the second cavity is internally provided with a first coupling resonance unit and a second coupling resonance unit which are symmetrically arranged about the longitudinal center plane of the second cavity. The 1 / 4 wavelength resonance unit comprises a first cylinder and a second cylinder which are coaxially arranged, and the diameter of the first cylinder is larger than that of the second cylinder. The first coupling resonance unit comprises a first resonance part and a second resonance part, and the impedance of the first resonance part is larger than that of the second resonance part. The second coupling resonance unit comprises a third resonance part and a fourth resonance part, and the impedance of the third resonance part is larger than that of the fourth resonance part. The cavity filter provided by the invention has the advantages of wide stop band and miniaturization.

The present invention specifically relates to the field of welding and manufacturing of quartz glass. Disclosed in the present invention are a welding device and a welding method which are used for machining a quartz base. The welding device comprises a base, two automatic welding devices, a supporting device, a clamping device, a transmission device and two reference plates, wherein the base comprises a quartz flange, quartz sheet and quartz rod, which are integrally connected; the supporting device supports the base and is closely attached to the quartz flange; both sides of the supporting device are each provided with a notch, the notches being symmetrical with respect to a central plane of the supporting device; the two automatic welding devices are respectively disposed at the two notches and can move toward or away from each other; welding points on the surface of the base are monitored by means of position sensors, and on the basis of monitoring results, a driving member is triggered to rotate; and the relative positions of the automatic welding devices with respect to the welding points on the base are corrected at the moment when the driving member engages with a central base plate, such that the consistency and accuracy of the welding points are ensured, thereby improving the dimensional accuracy of the base.

The invention belongs to the technical field of microwave communication, and relates to a coaxial double-stop-band filter, which comprises an inner conductor, an outer conductor, an insulating medium body, a signal input port and a signal output port, and is characterized in that the inner conductor is coaxially sleeved in the outer conductor, and the insulating medium body is positioned between the inner conductor and the outer conductor; two ends of the inner conductor are respectively connected with signal connecting ends of the signal input port and the signal output port; the outer conductor comprises a metal cylinder, the two ends of the metal cylinder are fixedly connected with the signal input port and the signal output port respectively, two defected ground structures which are symmetrically distributed relative to the central plane of the outer conductor are arranged on the metal cylinder, and each defected ground structure comprises a first gap and three second gaps which are arranged in parallel at intervals. The length direction of the second gaps is parallel to the axial direction of the metal cylinder, and the three second gaps are communicated through the first gap. The dual-band interference suppression performance is excellent, the passband insertion loss is low, the structure is novel, the power capacity is large, and processing is easy.

The invention relates to a point cloud data processing method, device and system, a storage medium and a product, and relates to the technical field of engineering machinery. The point cloud data processing method comprises the steps of obtaining first point cloud data scanned by a laser radar installed on the excavator; for each frame in the first point cloud data, the following operations are executed: according to a hinge point, an inclination angle and a size of a boom of the excavator, a central plane of the boom is determined, the central plane is a plane where the center of the boom is located, and the central plane is parallel to a rotating shaft of the boom; second point cloud data of the arm support are determined from the first point cloud data based on the central plane of the arm support, the second point cloud data are point cloud data within a target range of the first point cloud data, and the target range is determined according to the size of the arm support; removing the second point cloud data from the first point cloud data to obtain third point cloud data; and constructing a point cloud map of an operation scene of the excavator based on the third point cloud data.

The utility model discloses an X-ray diffractometer, which comprises a sample table, an X-ray detector, an X-ray detector, an X-ray detector and an X-ray detector, the X-ray source is used for emitting X-rays to the sample placing area; the detector group comprises a plurality of detectors, the plurality of detectors are arranged in a row along a bent arrangement direction, the arrangement direction extends in a central plane of the detector group, a first surface, with an effective detection area, of each detector faces the sample placement area, and the effective detection area is used for detecting the diffracted X-rays; the effective detection areas of the plurality of detectors are arranged at intervals along the arrangement direction; the fixing support is provided with a bent surface facing the sample placing area, and the second surfaces, opposite to the first surface, of the multiple detectors of the at least one detector group are installed on the bent surface; the cooling assembly is arranged on the back face, away from the bent surface, of the fixing support and used for cooling the detector set. In this way, when the detector group generates much heat in the detection process, heat can be dissipated in time through the cooling assembly.

An optical film and a display device are provided. The optical film includes a substrate and a plurality of protrusions disposed on a surface of the substrate. The protrusion includes a center plane, a first inclined surface, and a second inclined surface. The first inclined surface is connected to the center plane. The first inclined surface extends away from the surface of the substrate in a direction away from the center plane. The second inclined surface is connected between the first inclined surface and the surface of the substrate. The second inclined surface approaches the surface of the substrate in the direction away from the center plane.

The invention provides a core column and magnetic pole structure of an endogenous cyclotron, the core column is symmetrically arranged in central areas at two sides of a central plane of the accelerator, the core column is a big-end-down circular truncated cone-shaped core column, a pair of core column concave platforms is arranged on the circular truncated cone, and the core column concave platforms are used for arranging ion sources; according to the magnetic pole structure, a main magnetic pole and a core column are integrally manufactured, and the core column in the middle of the integrated magnetic pole structure is of a big-end-down circular-truncated-cone-shaped structure; chamfers are arranged at the junctions of the two side faces and the upper surface of each magnetic pole of the integrated magnetic pole structure, and four slopes inclining towards the central point of the central area are designed in the head area of the fan-shaped magnetic pole, so that transition from a circular truncated cone in the central area to a peripheral magnetic field is smoother; on the basis that the radial size of the upper surface of the core column is not increased, the head magnetic field is still improved by increasing the volume, close to the lower surface, of the core column; the two symmetrical concave platforms are designed on the circular truncated cone type core column, so that the symmetry of a magnetic field is reserved, and meanwhile, a sufficient installation space is reserved for an ion source.

An axle beam comprising a beam and first and second kingpin mounting portions. The beam extends along a center plane. The beam may include a top side, a bottom side disposed opposite the top side and one or more flanges. The first and second kingpin mounting portions extend from opposite ends of the beam.

The utility model provides an all-terrain vehicle which is characterized in that a first plane is a longitudinal central plane of a vehicle frame, a left front shock absorber and a right front shock absorber are symmetrical about the first plane, and a left rear shock absorber and a right rear shock absorber are symmetrical about the first plane; the left front shock absorber comprises a first mounting part connected with the front sub-frame, the left rear shock absorber comprises a second mounting part connected with the rear sub-frame, the distance between a reference point A of the first mounting part and a reference point B of the second mounting part in the front-back direction is L1, and a second plane passes through the reference point A and the reference point B and extends in the up-down direction; the engine comprises at least two third mounting parts which are flexibly connected with the main frame, and the at least two third mounting parts comprise a front third mounting part which has the smallest distance from the second plane in the front-back direction and a rear third mounting part which has the largest distance from the second plane in the front-back direction; the distance between the reference point C of the front third mounting part and the reference point D of the rear third mounting part in the front-back direction is L2; and 0.12 < = L2 / L1 < = 0.48.

The present invention relates to a downhole tool string for displacing at least a tool section in a well in a radial direction in a wall of a well tubular metal structure extending along an axial direction in relation to the radial direction, comprising a tool body having an outer face and a tool centre axis along the axial direction, a centre plane extending along and enclosing the centre axis, dividing the tool body into a first body half and a second body half, an operational machining tool for performing a machining operation in the well tubular metal structure, such as drilling a hole in the wall, and extendable from the outer face of the first body half in a first radial direction in relation to the tool centre axis, and a first displacement element extendable from the outer face of the second body half of the tool body for displacing the tool body towards the wall for arranging the operational machining tool close to the wall, the first displacement element being extendable between a retracted position and a projected position, wherein the downhole tool string further comprises a first distancing element extendable from the outer face of the first body half, the first distancing element having a retracted position and a projected position, and in the projection position of the first distancing element a distance is provided between the outer face and the wall of the well tubular metal structure. Moreover the present invention also relates to a downhole system.