52 results about "Spiral trajectory" patented technology

The invention relates to the technical field of industrial water treatment equipment, and discloses an intelligent flushing self-cleaning filter system for industrial water treatment. A dynamic suspended matter monitoring module of the system collects three-dimensional distribution data of deposits on the surface of a filtering medium in real time, and mixed deposition characteristics of suspended solids and oil stains are recognized through a multispectral imaging technology; the differential pressure trigger control module establishes a mapping relation between sediment thickness and fluid resistance according to the three-dimensional distribution data, and generates a cleaning trigger instruction when the real-time differential pressure data reaches a dynamic threshold interval; the spiral trajectory planning module analyzes the cleaning trigger instruction, and generates a composite motion trajectory containing a rotation angular velocity and an axial displacement rate in combination with the current position of a suction nozzle and a filter screen topological structure; the multi-mode flushing execution module synchronously adjusts torque output of a hydraulic motor and linear displacement of a piston cylinder based on the composite motion trail, so that a suction nozzle covers the whole effective filtering area of a filter screen along a spiral path.

The invention relates to the technical field of rotor detection, in particular to a rotor balance degree detection device of a duplex harvester motor, which comprises a base, clamping supports for placing a rotor are fixedly arranged on the front side and the rear side of the top of the base, and two rolling bearings for bearing a rotating shaft of the rotor and a detector for detecting the balance degree of the rotor are arranged on the clamping supports. According to the rotor balance degree detection device of the duplex harvester motor, a belt is dynamically attached to the surface of a rotor along a spiral track in cooperation with an elastic release mechanism of a tensioning wheel in the process that a lifting platform drives a belt frame to press downwards through a spiral attachment transmission and dynamic contact enhancement technology, a contact area in continuous gradient distribution is formed, and compared with traditional single-point contact, the detection efficiency is greatly improved. According to the design, the contact area is increased, the friction coefficient fluctuation is reduced, the transmission slip phenomenon is effectively inhibited, the torque transmission stability is improved, the rotating speed fluctuation control is obvious, and the signal-to-noise ratio of data collected by the detector is obviously improved.

The invention belongs to the technical field of gas-liquid separation, and discloses a conical double-spiral-channel cyclone separation structure and application, the conical double-spiral-channel cyclone separation structure comprises a separator cylinder, a conical separation device, a medium tangential inlet, a transition guide device, a gas outlet and a liquid outlet; the conical separation device is arranged in the separator cylinder and is of an inner and outer double-spiral structure; a medium tangential inlet is formed in the upper part of the separator barrel and is communicated with the conical separation device; a transition guide device is arranged at the lower part of the conical separation device and is used for medium transition from outside to inside of the conical separation device; and the top and the bottom of the separator cylinder are respectively provided with a gas outlet and a liquid outlet. According to the invention, a conical inner and outer double-spiral body is designed, so that a medium advances along a set spiral track after entering the separation device, and the arrangement of the double-spiral body realizes twice gas-liquid spiral separation under the condition that the equipment size is not changed.

The application relates to a path tracking method, device and storage medium. The method comprises the following steps: determining a pre-look distance; determining at least two reference points in path points of a planned path according to the pre-look distance; in response to the transverse error and the heading error of the at least two reference points not satisfying a preset condition, generating an Euler spiral trajectory table; determining a target column with the minimum current curvature difference value in the Euler spiral trajectory table; establishing an Euler spiral starting point coordinate system with each trajectory point in the target column as a starting point; determining the sum of tracking errors of the at least two reference points in the Euler spiral starting point coordinate system; when the sum of the tracking errors of the at least two reference points takes the minimum value, determining a target curvature change rate; and determining a front wheel steering angle according to the target curvature change rate, the front wheel steering angle being used for controlling vehicle steering to perform path tracking. The embodiment scheme can improve path tracking precision and control the vehicle to gently follow or approach the planned path.

The application provides a flexible flagellum-driven swimming micro-nano robot and a control method thereof, and relates to the technical field of micro-nano robots.The robot comprises a head and a flexible flagellum, the inside of the head is provided with a control component, a monitoring component, a driving component and a power source, the driving component is connected with the flexible flagellum, and the method comprises the following steps: a control chip reads chemical concentration or light field intensity information detected by an environmental sensor; the collected chemical concentration or light field intensity information is compared with historical time information; the driving frequency of a micro-actuator is switched according to the comparison result; and the swimming micro-nano robot is driven to swim.The application fully utilizes the complex fluid-structure coupling behavior between the flexible flagellum and the fluid, does not need a complex steering mechanism, only needs simple information storage and logical judgment to change the swing frequency of the flagellum, and can realize the autonomous navigation movement of the micro-nano robot in a complex environment, and gradually approaches the target along a variable-parameter spiral trajectory.

The invention discloses a balancing device for automobile center disc balance degree detection, and belongs to the field of automobile detection devices.The balancing device comprises a supporting cavity, center disc clamping cavities are symmetrically and rotationally connected to the upper surface of the supporting cavity, transmission teeth are fixedly connected to the outer side walls of the center disc clamping cavities, and a sliding groove is formed in the upper surface of the supporting cavity; a supporting sliding cavity is slidably connected into the sliding groove, and a first motor is fixedly connected to the upper surface of the supporting sliding cavity. According to the device, the linkage rotary column is driven to rotate through the third motor in the clamping cavity of the center disc, the supporting sliding column is forced to drive the supporting clamping ring to synchronously expand / contract through the spiral track of the angle groove, the device can automatically adapt to center discs with different inner diameters, and manual adjustment is not needed. After the supporting clamping ring is in complete contact with the center disc inner ring, the extrusion wedge pushes the contact wedge to overcome the pre-tightening force of the second spring to be contained in the clamping groove, and the friction force between the hollow disc and the inner wall of the hollow cavity disappears.

The utility model belongs to the technical field of shower equipment, and particularly relates to a shower pedestal lifting device and a shower. The device comprises a sliding rod assembly, the sliding rod assembly comprises a sliding rod body and a rotating shaft rotationally installed in the sliding rod body, and a two-way spiral groove is formed in the rotating shaft; the driving assembly is mounted at one end of the sliding rod assembly and is in transmission connection with the rotating shaft; the shower head seat assembly comprises a shower head seat body and a rotating block mounted on the shower head seat body; wherein the shower pedestal body is mounted on the sliding assembly in a sleeving manner, and lifting of the shower pedestal assembly is realized through cooperation of a rotating block and a two-way spiral groove in a rotating shaft; and the switch assembly is installed on the sliding rod body, electrically connected with the driving assembly and used for controlling the driving assembly to be opened and closed. According to the lifting device, through the precise matching design of the bidirectional spiral groove and the rotating block, the shower pedestal assembly can ascend and descend according to the spiral track, and stepless ascending and descending and more precise height control are achieved.

The present invention relates to the field of rotor detection technology, specifically a rotor balance detection device for a double harvester motor, comprising a base, wherein the front and rear sides of the top of the base are fixedly provided with a bracket for placing the rotor, and the bracket is provided with two rolling bearings for receiving the rotor shaft and a detector for detecting the balance of the rotor. This rotor balance detection device for a double harvester motor, through spiral fitting transmission and dynamic contact enhancement technology, in the process of the lifting platform driving the belt frame downward, cooperates with the elastic release mechanism of the tensioning wheel to make the belt dynamically fit the rotor surface along a spiral trajectory, forming a contact area with a continuous gradient distribution. Compared with traditional single-point contact, this design increases the contact area, reduces the fluctuation of the friction coefficient, effectively suppresses the transmission slip phenomenon, improves the stability of torque transmission, significantly controls the speed fluctuation, and significantly improves the signal-to-noise ratio of the data collected by the detector.

The drilling machine drilling direction guiding device comprises a base, a penetrating hole, a locking mechanism and an electric control system, the penetrating hole vertically penetrates through the middle of the base, the locking mechanism is fixed to the top end of the base, a plurality of mounting holes vertically penetrate through the base, and a supporting seat is mounted on the upper portion of the locking mechanism; three first supports are fixed to the circumference of the supporting seat at equal angles, through holes are formed in the supporting seat in an up-down penetrating mode, the through holes can be coaxial with the penetrating holes, and a horizontal hydraulic cylinder body is fixed to each first support. The rotary driving mechanism is controlled to drive the rotary cylinder to properly rotate and then brake, a bevel gear ring and a bevel gear can be utilized to enable the hydraulic rod, the sealing piston and the roller frame to rotate, so that the inclination angle of the contact roller relative to a drill rod is adjusted, and the axial direction of the contact roller is perpendicular to a spiral track; the rotation direction of the contact roller can be divided into a horizontal direction and a vertical direction.

A ball screw assembly is provided in which a three-dimensionally shaped recirculation trajectory of a recirculation groove can be connected to a helical trajectory such that their tangential directions are substantially continuous. A ball screw assembly (1) comprises: a ball screw (2) having a helical groove (2a); a ball nut (3) having a helical groove; and a plurality of balls (4) arranged between the helical groove (2a) of the ball screw (2) and the helical groove of the ball nut (3). The ball nut (3) is provided with a recirculation groove connected to one end and the other end of the helical groove of the ball nut (3) to allow the balls (4) to recirculate.A recirculation trajectory (8) of the recirculation groove is formed based on a trajectory curve of the groove cross section, which represents a trajectory along which the balls (4) are recirculated in a groove cross section of the ball screw (2), and a longitudinal trajectory curve, which represents a trajectory along which the balls (4) are recirculated in a virtual plane, wherein a trajectory length w of the trajectory curve of the groove cross section is an H-axis and a trajectory of a helical trajectory F. v (ω) is a V-axis.

The invention discloses grouting equipment for power transmission and transformation project foundation construction, and relates to the technical field of power transmission and transformation project foundation construction. Comprising a rotating shaft, the end, away from a platform, of a screening assembly is fixedly connected with a barrel, the outer side of the rotating shaft is fixedly connected with a spiral plate, the inner wall of the barrel makes contact with the outer side of the spiral plate, and the end, away from the screening assembly, of the barrel is fixedly connected with a shell; the end, away from the barrel, of the shell is fixedly connected with a nozzle. According to the grouting equipment for power transmission and transformation project foundation construction, the spiral plate is arranged and spirally distributed in the axial direction of the inner wall of the cylinder, when grout is sprayed out of the nozzle, the spiral plate can guide the grout to be diffused along the spiral track, and the problem that diffusion is uneven due to the fact that the grout is intensively sprayed in a certain direction during traditional straight pipe grouting is solved; meanwhile, the slurry is output at a constant flow, and pulse type discharging caused by pressure fluctuation of the barrel is avoided.

The present application discloses a one-time extrusion forming tool and its design method. The extrusion head assembly is arranged in the installation channel, and the installation position of the cylindrical pin in the installation channel is adjustable, and the extrusion head is exposed from the installation channel. The degree to which the extrusion head protrudes from the installation channel increases from the first turn to the last turn on the preset spiral track. The one-time extrusion forming tool and its design method provided by the present invention, through the structural design of the one-time extrusion forming tool, take the working part as the main part, and the extrusion head assembly is spirally arranged on the working part. The degree to which the extrusion head protrudes from the installation channel increases from the first turn to the last turn on the preset spiral track. When the one-time extrusion forming tool contacts the nut blank, the rotation and downward pressing movements can smoothly perform the one-time extrusion forming process. The extrusion process is from shallow to deep, which not only ensures the forming accuracy but also improves the efficiency. The processing of the inner raceway of the lead screw nut can be completed only by one extrusion.

The utility model discloses a kind of high-efficiency heat exchanger reinforced turbulent flow guide components, it is related to flow guide component technical field, including flow guide pipe, the inner wall of flow guide pipe is equipped with several installation grooves, the inside fixed connection of installation groove has several turbulence components, guide component is arranged between installation groove, the guide component includes spiral vane, the center of spiral vane is equipped with resistance-reducing passage, the surface of spiral vane is equipped with several resistance-reducing holes, the position of spiral vane close to turbulence component is equipped with turbulence passage, the utility model can effectively promote fluid to flow along spiral trajectory by the spiral structure of spiral vane, increase the disorder degree of fluid, simultaneously, by the setting of turbulence plate, the laminar flow structure of fluid can be locally destroyed, so that fluid presents more turbulent flow, turbulent flow by improving the irregularity of fluid flow, make the heat exchange between fluid more frequent, improve the heat exchange effect of device.

An intraocular lens the optical power map of which comprises at least one spiral track. There are at least a first and a second cross section of the spiral track the dioptric range of each of which is at least 0.5 dioptre. The average optical power of the first cross section is at least 0.5 dioptre apart from the average optical power of the second cross section.

The present invention relates to a spiral trajectory smoothing and compression method for CNC machining of implants. This method, which belongs to the field of CNC machining, is used to address the problem that the tool trajectories of parts such as implants are mostly circular arcs and spatial spirals, which are then discretized into a series of small line segments after being processed by CAM (Computer Aided Manufacturing) software. Based on the process characteristics of the implant workpiece, the method of the present invention first fits the tool trajectory described by the small line segments in a two-dimensional plane, then performs spatial fitting in the Z direction, and classifies and fits various curves. This geometrically improves the smoothness of the machining trajectory, thereby enhancing the speed stability during the machining process, improving surface machining quality, and shortening machining time.

The invention discloses a profiling meshing driven steel wire rope climbing robot and an active brake control method. The robot comprises a split type rack assembly, a driving system, a pressing system and a control system. A concave contour surface and a plurality of meshing convex points distributed according to a spiral track are arranged on the outer circumferential surface of a profiling meshing type concave wheel of the driving system, so that the convex points are accurately embedded into strand gaps of the steel wire rope to form mechanical interlocking transmission, and the problem of slipping in an oil contamination environment is fundamentally solved. The pressing system adopts a floating support with an elastic element and a plurality of pressing wheels, and self-adaptive constant-force clamping is achieved. The control system monitors the motion state in real time through the speed detection module, and the control unit actively triggers the independent braking module to implement emergency braking when recognizing early out-of-control characteristics such as continuous deviation of the speed or abnormal acceleration, so that an accident is restrained in the bud state. According to the invention, mechanical meshing driving without transforming the steel wire rope is realized, and the device has high load capacity, strong environmental adaptability and an active safety protection function.

The invention relates to a quick positioning rivet welding tool for butt welding of a flange and a pipe. The quick positioning rivet welding tool comprises a lifting table and a control unit. The control unit is fixedly connected with the moving block through a bearing plate and comprises a shaft pipe and a driving piece arranged at the tail end of the shaft pipe, a pipe locking structure used for clamping the heat exchange pipe is arranged at the front end of the shaft pipe, and the axial direction of the shaft pipe is arranged in the width direction of the sliding way; and the driving piece drives the shaft tube to rotate along the axis of the shaft tube and to do translational motion along the axis direction, so that the heat exchange tube moves along a spiral track. By means of spiral track movement, static friction between the heat exchange tube and a flange hole wall is reduced in a rotating mode in the penetrating process, thrust needed by linear propulsion is reduced, and therefore equipment energy consumption and mechanical loss are reduced, meanwhile, tube body scratching or hole wall deformation is avoided through dynamic contact, positioning precision and rivet welding quality are improved, and the device is particularly suitable for multi-hole-site dense assembly scenes.

The utility model discloses a winding type tension uniform adjusting device for crochet rope production, which comprises a winding mechanism and an adjusting mechanism, and the winding mechanism comprises a frame, a motor connected with the bottom of an inner cavity of the frame, and a wire spool connected with an output shaft of the motor. According to the utility model, after the two sections of the cellosilk are fixed, the motor drives the wire spool to rotate, and the multiple strands of cellosilk are uniformly wound in a spiral track; in the winding process, the diameter of the bobbin is gradually reduced along with fiber consumption, and a pressure sensor in the guide wheel frame detects the tension change in real time and transmits data to an external PLC (Programmable Logic Controller); the PLC analyzes the tension data based on a preset algorithm, and synchronously executes two controls: one is to calculate the expansion and contraction amount of the micro electric push rod, drive the sliding piece to axially move along the air pressure damper, dynamically reduce the winding radius through the guide wheel frame and maintain the linear speed constant, and the other is to dynamically adjust the rotating speed of the output shaft of the motor to further balance the tension fluctuation.

This invention provides a shot peening strengthening process for improving the surface hardness of precision long shaft parts, belonging to the field of precision machining technology. The invention involves pre-treating the surface of the precision long shaft part, establishing a discrete mesh model of the long shaft and collecting initial residual stress distribution data, activating an online dynamic load compensation support system to control the axial runout within a threshold range, and driving the spray gun to perform continuous shot peening along a spiral trajectory based on the process timing parameters output by the physical information-constrained spatiotemporal jump graph attention model. The invention also utilizes a multi-channel acoustic emission signal sequence to output real-time predicted values ​​of the residual stress field, inputting these predicted values ​​into a shot peening strengthening process game-theoretic control model to drive a follow-up reverse hydraulic straightening device to actively suppress bending deformation and perform supplementary shot peening on areas that do not meet the standards. This solves the technical problem of difficulty in real-time suppression of bending deformation caused by uneven residual stress field distribution during the shot peening strengthening process of precision long shaft parts.

The application belongs to the technical field of steel wire rope detection, and specifically discloses a marine steel wire rope detection device, which comprises a needle bearing and a rotating drum rotatably arranged in the needle bearing, further comprises a variable-pitch adjusting mechanism symmetrically arranged in the rotating drum, a radial synchronous adapting mechanism symmetrically arranged outside the rotating drum, and an external gear ring threadedly arranged at the front end of the rotating drum, each variable-pitch adjusting mechanism comprises a plurality of universal bull's eye wheels arranged along the axial direction of the rotating drum, and a distance measuring sensor for detecting the relative position change between the adjacent universal bull's eye wheels is arranged between the adjacent universal bull's eye wheels. The radial synchronous adapting mechanism is used for pressing the bull's eye wheels into the grooves between the strands of the steel wire rope, and through the axial relative movement between the device and the steel wire rope, each bull's eye wheel is limited by the support of the needle bearing and rotates adaptively along the spiral track of the groove between the strands, and any uneven change of the gap between the strands will be directly converted into the measurable relative displacement of the bull's eye wheel in the axial position, so that the automatic detection of the lay length parameter is realized.

The invention belongs to the technical field of steel wire rope detection, and particularly discloses a maritime work steel wire rope detection device which comprises a needle bearing and a rotary drum rotationally arranged in the needle bearing. The variable-pitch adjusting mechanisms are arranged in the rotary drum in a central symmetry mode, the radial synchronous adaptation mechanisms are arranged outside the rotary drum in a central symmetry mode, the outer gear ring is arranged at the front end of the rotary drum in a threaded and sleeving mode, and each set of variable-pitch adjusting mechanism comprises a plurality of universal bull eye wheels arranged in the axial direction of the rotary drum; a distance measuring sensor used for detecting changes of relative positions of the universal bull eye wheels is arranged between every two adjacent universal bull eye wheels. According to the device, the bull eye wheels are pressed into the inter-strand grooves of the steel wire rope through the radial synchronous adaptation mechanism, through axial relative movement of the device and the steel wire rope, the bull eye wheels rotate in a self-adaptive mode along with the spiral tracks of the inter-strand grooves under supporting and limiting of the needle bearings, any uneven change of inter-strand gaps is achieved, and the steel wire rope can be driven to rotate in a self-adaptive mode. And the displacement is directly converted into measurable relative displacement of the bull eye wheel in the axial position, so that automatic detection of lay length parameters is realized.

The application belongs to the technical field of profile guiding, and discloses a positioning and guiding machine for profile machining, which comprises a plurality of passive rollers, a correction mechanism arranged between two adjacent passive rollers and used for assisting the passive rollers in guiding and conveying a coiled profile, and a driving mechanism in transmission connection with the correction mechanism and used for driving the correction mechanism to actively correct the posture of the profile. The correction mechanism comprises a sleeve roller in winding connection with the surface of the profile, a plurality of protrusions uniformly embedded in the sleeve roller along a spiral track, an air bag sleeved in the sleeve roller, and guide fences arranged at both ends of the sleeve roller. The guide fence comprises guide rods fixed to the inner wall of the sleeve roller and arranged in an array along the circumference of the sleeve roller, and a plurality of supporting plates movably sleeved on the guide rods at both ends. The above technical solution can correct the profile without stopping the machine, and can effectively protect the edge of the profile from being damaged during correction.

The application provides a kind of multi-layer energy dissipation structure's water passing bridge pile foundation anti-scour device and method, it is related to bridge foundation engineering technical field, including pile foundation, inner sleeve and outer sleeve, the lateral wall of inner sleeve is equipped with a plurality of first flow guide holes;The lateral wall of outer sleeve is equipped with a plurality of second flow guide holes;A plurality of second flow guide holes are arranged along the first helix line of the cylinder wall of outer sleeve, and the connecting line of the center of a plurality of second flow guide holes forms the first spiral track along the circumference of outer sleeve;A plurality of first flow guide holes are arranged along the second helix line of the cylinder wall of inner sleeve, and the connecting line of the center of a plurality of first flow guide holes forms the second spiral track along the circumference of inner sleeve;The spiral direction of first spiral track is opposite to the spiral direction of second spiral track.The application solves the problems of low energy dissipation efficiency and poor jet interference effect of the bridge pile foundation anti-scour device in the prior art.

The invention discloses a variable-speed turning system which comprises a speed change mechanism, a turning mechanism and a workpiece pressing mechanism. The speed change mechanism comprises a motor, a driving disc, a friction wheel and a driven disc; the output end of the motor is connected with the driving disc, the friction wheel is arranged between the driving disc and the driven disc, the transmission shaft is installed in the center of the driven disc, the friction wheel moves in the radial direction of the driving disc and the driven disc and controls the rotating speed of the driven disc and the transmission shaft, and the turning mechanism is installed on the transmission shaft and driven by the transmission shaft to machine workpieces. Variable speed driving, clutch switching, a turning mechanism and a workpiece clamping mechanism are integrated. According to the device, friction transmission and clutch control can be utilized, rapid switching of a turning tool between a circumferential track and a spiral track is achieved, and meanwhile efficient and automatic clamping of a workpiece is achieved through a bevel gear-rack-pressing plate combined clamping structure.

Provided is a ball screw where a three-dimensionally formed recirculation trajectory of a recirculation groove can be connected to a helical trajectory in such a manner that the tangential directions thereof are substantially continuous. A ball screw (1) includes: a ball screw shaft (2) including a helical groove (2a); a ball nut (3) including a helical groove; and a plurality of balls (4) placed between the helical groove (2a) of the ball screw shaft (2) and the helical groove of the ball nut (3). The ball nut (3) is provided with a recirculation groove that is connected to one end and the other end of the helical groove of the ball nut (3) to recirculate the balls (4). A recirculation trajectory (8) of the recirculation groove is formed on the basis of a groove cross-sectional trajectory curve representing a trajectory along which the balls (4) are recirculated in a groove cross-section of the ball screw shaft (2), and a longitudinal trajectory curve representing a trajectory along which the balls (4) are recirculated in a virtual plane where a trajectory length ω of the groove cross-sectional trajectory curve is an H-axis and a helical trajectory length Fv(ω) is a V-axis.

The utility model discloses a fixing corner connector structure for rock plate machining and polishing, relates to the technical field of rock plate auxiliary corner connectors, and aims to solve the technical problem of poor limiting effect. The fixing corner connector structure comprises a corner connector body, a side shell is connected to one side of the corner connector body, a fixing column is fixed to the inner bottom of the side shell, and an outer sleeve is arranged on the periphery of the fixing column; a rotary control part is arranged between the outer sleeve and the fixing column, a side blocking part is arranged on the periphery of the outer sleeve, rotary teeth are arranged above the outer sleeve, a synchronous rod is joggled between the rotary teeth and the outer sleeve, and a jacking part is connected to the top of the synchronous rod. Through the matching of the fixed column and the outer sleeve, the sliding structure of the spiral cavity and the rotating block, the spiral track design of the spiral cavity, the annular sliding design of the telescopic rod and the bottom of the outer sleeve, and the connection design of the rotating teeth, the synchronous rod and the outer sleeve, the rotating effect is improved; and through the connecting frame at the top of the outer sleeve and the adjusting screw rod and the rubber ball at one end of the connecting frame, multi-direction limiting is achieved, and the advantage of stable limiting is achieved.

The invention discloses a laser processing method and equipment, and the laser processing method comprises the steps: determining a first spiral scanning starting point through the center coordinate and size of a to-be-processed hole, and determining a first spiral processing path through the first spiral scanning starting point, the number of spiral processing circles, the distance between the spiral processing circles and other parameters; and obtaining the end point of the second spiral machining path through the first spiral machining path, and further obtaining the second spiral machining path. And when laser scanning is controlled, scanning is conducted in sequence along the first spiral machining path and the second spiral machining path from the first spiral scanning starting point, and a machined hole is formed. By means of the double-spiral-track machining mode, energy of laser spots is evenly distributed in the machining process, so that the bottom of a machined hole is flat and smooth, the quality of the machined hole is improved, meanwhile, no redundant skipping movement exists in the double-spiral-track machining mode, and the machining efficiency is improved.

Disclosed are a wind concentrator and a device driven by the wind concentrator. The device comprises a plurality of blades and a rotating shaft. The blades are arranged along a spatial spiral trajectory around the rotating shaft, with the number of spiral turns formed by the blades being at least 1.5. Within one effective spiral turn, at least three blades are distributed. The windward surface of each blade is inclined toward the rotating shaft, with the blade's root being the portion closest to the rotating shaft. The inner normal of the windward surface of each blade at the center of the root forms an acute angle with the axis of rotation away from the spatial spiral trajectory. The wind concentrator, guided by the blades, can form a cyclone within the device that rotates in the same direction as the device, improving wind energy utilization and allowing it to be output as power for various devices.

The present application relates to a kind of complex surface grinding and polishing path planning method.Compared with the existing spiral trajectory planning method for complex hole surface, the method directly generates a non-bridging spiral trajectory to cover the entire three-dimensional hole surface, which avoids the problem of large amount of bridging between sub-regions caused by sub-region division, the generated spiral trajectory path is shorter, smoother, and the trajectory spacing is more consistent, and avoids the discontinuity and sharp turning of the trajectory, so that the motion path of the actuator is more smooth, the number of path discontinuities is also reduced, thereby avoiding the processing time and workpiece surface impact marks caused by tool lifting and actuator turning, therefore, the method generates trajectory for 3D surface grinding and polishing processing will improve 3D surface grinding and polishing processing efficiency and quality, reduce processing cost, improve tool and robot service life, with obvious economic significance.