22 results about "Archimedean spiral" patented technology

The invention discloses a robot speed control method and device based on single-target planning, and relates to the technical field of robot control. Robot motion control basic parameters are obtained, and the constant advancing speed of the first robot serves as a decision variable; wherein the robot motion control basic parameters comprise structural parameters, path geometric features, kinematics parameters and a speed safety threshold value of the robot, the robot path adopts an Archimedes spiral, and the U-turn path is planned into two sections of tangent arcs; constructing a target function by taking maximization of the decision variable as a target; setting constraint conditions based on robot motion control basic parameters; constructing a single-target constraint optimization model by combining the target function, the constraint condition and a robot speed calculation model; the single-target constraint optimization model is solved, and the maximum speed of the robot in the U-turn area is calculated through simulation. The problem of how to control the performance speed of the robot and guarantee the safety of the performance process of the robot is solved.

The invention belongs to the technical field of static mixers, and provides an Archimedes spiral-based static mixer jet structure and a working method thereof, the Archimedes spiral-based static mixer jet structure comprises a shell, and a spiral jet branch pipe and a mixing element arranged in the shell; each spiral injection branch pipe comprises an air inlet pipe, a spiral pipe connected with the air inlet pipe and a plurality of air outlet pipes arranged on the spiral pipe; the spiral pipe is of an Archimedes spiral structure, the air inlet pipe penetrates through the shell, the spiral pipe is located in the shell, and an air outlet of the air outlet pipe faces the mixing element. The multi-path hydrogen nozzles arranged in the Archimedes spiral are combined with the mixing element, so that the hydrogen can be uniformly dispersed and sprayed in a three-dimensional space, the mixing uniformity of the hydrogen and natural gas is effectively improved, the hydrogen is prevented from being enriched along the pipe wall due to density difference or the local concentration is prevented from being too high, and the material degradation and leakage risk caused by hydrogen embrittlement is remarkably reduced.

The invention provides a measuring device for alloy fluidity in a concentric three-spiral-line thin-wall casting, a using method and a predicting method, and belongs to the field of liquid metal fluidity testing. The method is used for solving the problems that in the prior art, the flowing property and the mold filling property of liquid metal in the thin-wall casting pouring process cannot be accurately measured, and the actual mold filling condition of the thin-wall casting cannot be synchronized through flowing property testing. The device comprises a concentric triple-helix pattern, a sprue pattern, an outer sprue pattern, a lower sand box, an upper sand box and an outer sprue sand box, the upper sand box is mounted on the lower sand box, the concentric triple-helix pattern is mounted in the lower sand box, the outer sprue sand box is mounted on the upper sand box, the sprue pattern is mounted in the upper sand box, and the outer sprue pattern is mounted in the outer sprue sand box. The outer sprue pattern is mounted in the outer sprue sand box, the sprue pattern is connected with the outer sprue pattern, and the concentric triple-helix pattern is expanded in the radial direction of the sprue pattern in the Archimedes spiral direction. The device is mainly used for testing liquid metal fluidity.

The invention discloses self-dispersing anti-blocking single-shaft compression equipment which comprises a machine shell, a compression roller, an extrusion plate and a driving device, and the compression roller is rotationally installed in the machine shell and comprises a first rotating shaft and a plurality of compression cutter tooth discs fixedly installed on the first rotating shaft at intervals; a plurality of cutter teeth are annularly arranged on the periphery of each compression cutter fluted disc at equal intervals, the compression cutter fluted discs are distributed into two symmetrical groups, and the corresponding cutter teeth on each compression cutter fluted disc in each group are distributed along an Archimedes spiral; the extrusion plate is rotationally installed in the machine shell and obliquely arranged on one side of the compression roller, the driving device is in transmission connection with the compression roller and the extrusion plate, and the driving device is used for driving the compression roller to rotate so as to be matched with the extrusion plate to compress the hollow bottle body and is also used for driving the extrusion plate to do reciprocating swing motion relative to the compression roller. According to the self-dispersing device, the occlusal force and the grabbing force on the bottle bodies can be improved, self-dispersing of the fed bottle bodies is achieved, accumulation and material blocking are avoided, and the self-dispersing device can be matched with compression treatment of large-size bottle bodies.

This invention discloses a valve positioner motion conversion mechanism and an intelligent valve positioner. The valve positioner motion conversion mechanism includes a valve stem that drives the valve to open and close via up-and-down movement. A lever is disposed on the side of the valve stem, and the lever has a bearing fixed to an input shaft. A curved groove is provided in the lever, in which a lever can move. The shape of the curved groove is determined by a constant-velocity Archimedean spiral, the polar equation of which is: r = a + bθ, where: r represents the polar radius; a represents the distance from the starting point of the spiral to the center of rotation; θ represents the polar angle; and b is the increase in distance of r after each certain angle θ. The intelligent valve positioner includes a positioner housing, a potentiometer and a potentiometer gear extending from the potentiometer, an input gear, and an input shaft. It also includes a valve positioner motion conversion mechanism connecting the lever to the input shaft of the valve positioner. The structure is simple and the operation is stable.

The application discloses a cylindrical battery design method based on an Archimedes spiral formula, which completes the calculation of the winding number of the positive electrode, the negative electrode and two layers of the separator by the Archimedes spiral equation, then carries out winding simulation on the four groups of components respectively, establishes the relationship curve of the winding number, the winding radius and the winding curve xy of the four groups of components on the battery simulation diagram, obtains the xy coordinate values of the corresponding winding curve of the four groups of components, and completes the winding design of the cylindrical battery. The application guarantees that the diameter of the winding core is completely consistent with the preset diameter after the winding of the positive electrode, the negative electrode and the separator is completed, and the winding core cannot enter the shell. Moreover, the method can simulate the cross-section condition of the winding core after winding in the execl table directly, can more intuitively judge the diameter of the winding core, the wrapping condition of the negative electrode to the positive electrode and other information, and provides great convenience for the design of the winding core.

The utility model relates to a kind of corrosion resistant pump, belong to centrifugal pump technical field.The corrosion resistant pump includes front part pressurizing volute and rear volute, front part pressurizing volute includes pressure line, throat pipe, diffusion pipe and discharge pipe connected in turn, pressure line is vertically arranged, throat pipe and diffusion pipe jointly constitute Archimedes spiral line pipe, discharge pipe includes elbow and horizontal straight pipe, discharge pipe is communicated with the inlet of rear volute, the inside of pressure line is provided with nozzle, nozzle is communicated with the outlet of rear volute by reflux pipe, corrosion resistant pump further includes impeller, pump cover and suspension, pump cover and rear volute form a complete cavity, impeller is installed in cavity, and impeller is connected with the pump shaft of suspension.The corrosion resistant pump is small in pump body volume, saves space, can promote impeller inlet pressure, prevent medium from vaporizing in the process of suction due to pump inlet pressure being negative pressure, cause pump to produce cavitation, reduce the service life of pump.

A spiral spring structure formed through the thickness of a silicon substrate provides mechanical compliance in electronic packaging applications. The structure comprises a Fermat-Archimedean spiral having two anchored ends, combining Fermat spiral geometry with Archimedean spiral arm spacing. This configuration enables simultaneous strain relief in X, Y, and Z directions while maintaining consistent spacing between adjacent arms for reliable manufacture. The spiral spring structure can accommodate signal lines crossing through a redistribution layer. This design enables practical implementation of large-scale silicon substrates by effectively managing thermal and mechanical stress.

The invention discloses a spherical gear clamp and a robot for manufacturing a spherical gear. The clamp comprises a base, a first bevel gear, a second bevel gear, a profiling claw and a positioning block. The first bevel gear is rotationally installed in the base. The second bevel gear is rotationally installed on the base, meshed with the first bevel gear and provided with Archimedes spiral teeth. The bottoms of the profiling claws are meshed with the Archimedes spiral teeth, and the tops of the profiling claws are provided with clamping cambered surfaces. The first bevel gear rotates to drive the second bevel gear to rotate, so that the Archimedes spiral gear drives the profiling claw to move in the radial direction of the base, and the multiple clamping cambered surfaces are attached to and clamp the spherical surface of the spherical gear to achieve axial positioning. The bottom end of the positioning block is detachably installed on the base, and the top end of the positioning block can be matched with a positioning hole formed in the spherical gear to achieve circumferential positioning. The machining method has the technical effects of improving the machining precision, ensuring the gear meshing performance, prolonging the service life of the gear and adapting to machining of spherical gears of various specifications.

This utility model relates to the field of knitting equipment technology, and in particular to a saddle. Its adjusting shaft has a spiral groove, and a positioning pin extends into the spiral groove. The core trajectory line of the spiral groove is an Archimedean spiral. The vertical plane corresponding to the central polar axis of the core trajectory line is defined as the first vertical plane, and the vertical plane corresponding to the axis of the positioning pin is defined as the second vertical plane. The first and second vertical planes are spaced apart, and the pressure direction between the positioning pin and the spiral groove is approximately on the second vertical plane. This design ensures that the pressure direction between the positioning pin and the spiral groove is approximately vertically upward, preventing the pressure from generating rotational torque on the adjusting shaft, thus preventing the adjusting shaft from rotating and ensuring that the slider does not shift in the vertical direction, achieving precise adjustment and positioning.

The utility model discloses an ejector pin module capable of simply and accurately controlling speed, which comprises a driving ejector pin seat, and an ejector pin component is mounted at the top of the driving ejector pin seat; the driving ejector pin seat comprises a base, a first bearing, an extension spring, an Archimedes spiral cam and a servo motor, an ejector pin assembly fixing plate is fixed to the base, an original point sensor is fixedly arranged on one side of the upper end of the base, and a crossed roller guide rail is fixedly arranged on the base; the ejector pin assembly comprises a connecting seat and a step pin, the connecting seat is connected with the base through a crossed roller guide rail, the connecting seat is fixedly connected with a second bearing through the step pin, the second bearing is stretched through an extension spring to keep in contact with the Archimedes spiral cam all the time, an ejector rod is arranged above the connecting seat, and the ejector rod is fixed to the connecting seat; according to the utility model, the problem that when the speed of the ejector pin and the speed of the suction nozzle are difficult to accurately match, the suction nozzle cannot peel off a chip from a film material or the chip is crushed and damaged is solved.

A design method and system for a cutting structure of a PDC drill bit with spiral blades is provided, including carrying out uniaxial and triaxial compressive strength tests on outcrops or underground cores to obtain rock mechanical parameters; establishing a three-dimensional cutting structure of the PDC drill bit based on an archimedean spiral and front and rear row teeth of the PDC drill bit; establishing a bit-rock finite element model based on the rock mechanical parameters and the three-dimensional cutting structure of the PDC drill bit; obtaining a time history curve for weight-on-bit and torque-on-bit based on the bit-rock finite element model; establishing a design scheme for the cutting structure of the PDC drill bit based on the time history curve; and obtaining the cutting structure of PDC drill bit with spiral blades based on the design scheme for the cutting structure of the PDC drill bit.

This invention discloses an auxiliary straightening device and method for cable processing, belonging to the technical field of cable manufacturing and processing equipment. The device includes: S1, constructing a drive structure: setting up a base platform and a hollow guide spindle; a linkage adjustment ring with an Archimedean spiral guide groove is sleeved outside the spindle; and a closed-loop stepper motor is used to drive the rotation of the linkage adjustment ring, with an elastic floating straightening component embedded inside; S2, locking the physical zero point; S3, calculating the matching feed amount; S4, performing dynamic straightening: the drive motor rotates relative to the physical zero point position by the target number of pulse steps, forcing the floating piston to compress the variable stiffness damping spring to apply pressure; during the straightening process, viscous damping grease filled between the slider base and the floating piston is used to dissipate vibration energy. This invention establishes a calculation benchmark by real-time monitoring of the contact state, ensuring the consistency of straightening pressure for different batches of cables and solving the quality fluctuation problem caused by human operation in traditional methods.

The application discloses a flow guide device of a chemical vapor deposition furnace, which comprises an Archimedes spiral flow guide cone and a cross flow guide support, the Archimedes spiral flow guide cone comprises a cone body and an Archimedes spiral, the Archimedes spiral is distributed on a conical surface of the cone body to form a flow guide groove, the cross flow guide support comprises a perforated base and a flow guide rod, the Archimedes spiral flow guide cone is inserted on the perforated base, and the perforated base is communicated with the flow guide rod. The application adopts the combined mode of the Archimedes spiral flow guide and the cross flow guide support, improves the deposition uniformity compared with other molds, ensures uniform mixing of multiple gases and controls uniform distribution of a gas flow field along a radial direction, and improves the deposition efficiency.

The application discloses an interpolation method based on an Archimedes spiral and a related device, and the method comprises the following steps: acquiring setting parameters of a curve to be processed, the setting parameters comprising a starting radius, a pitch coefficient and an angle parameter; determining a calculated arc length of the curve to be processed according to the starting radius, the pitch coefficient and the angle parameter; acquiring a current arc length of an interpolation device, and iteratively optimizing the calculated arc length according to the current arc length and the calculated arc length until the difference between the current arc length and the calculated arc length meets an iteration end condition; determining the angle parameter of the current arc length at the iteration end as a target polar angle; and outputting an interpolation result according to the starting radius, the pitch coefficient and the target polar angle. By establishing an accurate relationship between the arc length and the polar angle, combining speed planning to realize an even and efficient interpolation algorithm, and using the Newton iteration method to quickly solve the interpolation point coordinates, the real-time requirement is met while the trajectory accuracy is ensured, and high-precision and high-efficiency trajectory control is realized.

The invention discloses a high-speed railway vibration isolation cell and a vibration isolation screen based on the band gap principle, the vibration isolation cell comprises a double-layer spiral elastic unit, an upper top plate, a lower bottom plate and connecting columns, the double-layer spiral elastic unit is connected with the upper top plate and the lower bottom plate through the connecting columns, and is used for guiding and controlling wave propagation and local resonance; the upper top plate and the lower bottom plate are used for bearing external loads; each double-layer spiral elastic unit comprises two unit plates which are connected through a connecting column. Each unit plate is provided with an Archimedes spiral groove so as to form a complex vibration propagation path. The vibration isolation cells are made of steel or polymethyl methacrylate. The double-layer spiral elastic units are connected to the connecting columns in series, vibration energy is concentrated in local areas of the unit plates through the local resonance principle, and energy of elastic waves is effectively absorbed. The Archimedes spiral groove enables elastic waves to be spread along a spiral track, the length of a spreading path is increased, the elastic waves can be attenuated, and therefore spreading of the low-frequency elastic waves is cut off.

This invention proposes a flat wire flaring device, comprising: a rotating unit and a gripper unit; the rotating unit includes an indexing plate and a turntable, the indexing plate being located on the inner side, and the turntable being fitted around the outer circumference of the indexing plate and rotating relative to it; on the surface of the turntable, a plurality of Archimedean spiral guide grooves are evenly distributed around its center of rotation; the gripper unit is configured with a plurality of gripper units; each gripper unit is mounted on the indexing plate in a radially slidable manner; each gripper unit is fixedly mounted with a corresponding drive bearing, and each drive bearing is rolled and nested in the corresponding Archimedean spiral guide groove on the turntable. This invention precisely converts a single rotational motion into a strictly synchronized radial linear motion of multiple grippers through the Archimedean spiral guide grooves, thereby solving the problem of accuracy and synchronization in multi-grip circumferential positioning, and providing reliable equipment assurance for the large-scale, high-quality manufacturing of high-performance flat wire motors.

The invention relates to an elastic element installation pitch parameter design method and an opening and closing assisting mechanism, an elastic element is a coil spring, the method comprises the steps that the thickness, the width and the polar diameter of the coil spring are substituted into polar coordinates and an arc length formula of an Archimedes spiral, and the relation of the arc length of the coil spring based on the value of a coil spring pitch parameter, the curvature radius of the coil spring and the pitch parameter is obtained; calculating the value of the bending energy density of the unit arc length of the coil spring based on the arc length; the relation between the curvature radius and the screw pitch parameter and the integral of the arc length of the coil spring based on the screw pitch parameter are substituted into the value of the bending energy density of the unit arc length of the coil spring based on the arc length, and an integral object in the integral of the bending energy density relative to the arc length is converted into a polar angle from a polar radius; obtaining an accumulative formula of bending energy with respect to pitch parameters; an equation is established for an accumulation formula of bending energy about the pitch parameters and resistance work, and a solving formula of the pitch parameters is obtained; and solving is carried out. The method has wide practical significance for improving operation convenience, safety and reliability of various devices.

The invention relates to a longitudinal chamber profile preform (1) comprising an inner wall (2) and an outer wall (3) which are made of sheet metal and which are arranged relative to one another so as to maintain a gap therebetween, a valve (5) being arranged on at least one of the walls (2, 3), the valve (5) being arranged between the inner wall (2) and the outer wall (3), the valve (5) being arranged between the inner wall (2) and the outer wall (3), and the valve (5) being arranged between the inner wall (2) and the outer wall (3). The edges of these walls (2, 3) are sealed with seals (6) and define a pressure-tight airtight interior space (4), the longitudinal chamber profile preform (1) being wound in the shape of a substantially Archimedes spiral. The invention also relates to a method for producing a longitudinal chamber profile (7).

The invention discloses a spiral material suction spinning stirring head and friction stir welding equipment, the spiral material suction spinning stirring head comprises a stirring head body, one end of the stirring head body is provided with a shaft shoulder face, the shaft shoulder face is provided with an Archimedes spiral groove, and the outer end of the Archimedes spiral groove extends to the peripheral face of the stirring head body to form a material suction opening; the stirring needle is arranged on the shaft shoulder face, the root of the stirring needle is connected with the inner end of the Archimedes spiral groove, a spiral groove spirally extending in the axial direction of the stirring needle is formed in the peripheral face of the stirring needle, and the spiral groove extends to the free end of the stirring needle from the root of the stirring needle; and a material conveying channel from the material suction port to the free end of the stirring needle is jointly formed by the material suction port and the Archimedes spiral groove. The method has the advantages of being high in process expansibility and high in welding quality.

The utility model discloses a tobacco material air pipe blanking conveying device based on air holes in an Archimedes spiral. The tobacco material air pipe blanking conveying device comprises an input pipe, a negative pressure conveying pipe, a falling pipe, an Archimedes spiral air hole plate, an air pipe and the like. Tobacco materials are input through the input pipe and enter the negative pressure conveying pipe under the wind action of the Archimedes spiral air hole plate and the air pipe to generate vortex spiral wind, and smooth conveying of the materials is achieved. The Achimedean spiral air hole plate is a circular plate with the outer circle diameter matched with the inner diameter of the air pipe, the circle center (x0, y0) of the air hole phi D surface is located on the Achimedean spiral, the parameter equation of the Achimedean spiral air hole plate is x = c + b.t.cos (2Pit), y = c + b.t.sin (2Pit), and the thickness h of the Achimedean spiral air hole plate is larger than or equal to the phi D value. Tobacco materials can be efficiently conveyed in the air pipe, smoothness is improved, breakage is reduced, and the like.

This utility model discloses a moisture-conserving plow for terraced grain planting in hilly and mountainous areas, relating to the field of agricultural machinery technology. It includes a mounting frame with a power conversion component fixedly installed at its rear end. Movable cylinders are movably installed at both ends of the power conversion component. The main plowshare features a high-chromium alloy Archimedean spiral surface design, combined with tungsten carbide alloy blades and a double-curved detachable disc plow blade, forming a three-stage high-efficiency tillage system. The main plowshare powerfully breaks up and turns the soil, the secondary plowshare refines the soil, and the disc plow blade flexibly handles obstacles. This system thoroughly breaks up compacted soil layers, increases soil porosity, effectively improves soil aeration and permeability, and enhances soil water and fertilizer retention capacity, creating a loose and fertile soil environment for grain root growth. Compared to traditional plows, it significantly improves soil moisture retention efficiency.