145results about How to "Guaranteed movement accuracy" patented technology

The invention discloses a zoom lens, a camera module and an electronic device. The zoom lens comprises a shell, a first lens assembly, a second lens assembly, a third lens assembly and a first drivingchip. The first driving chip comprises a first control end, a second control end, a third control end and a fourth control end, and the first control end and the second control end respectively control the second lens assembly and the third lens assembly to move relative to the first lens assembly so as to realize zooming of the zoom lens; the third control end is used for controlling the third lens assembly to move relative to the first lens assembly under the first target focal length so as to realize focusing of the zoom lens; and the fourth control end is used for controlling the third lens assembly to move relative to the first lens assembly under the second target focal length so as to realize focusing of the zoom lens, and the first target focal length is different from the secondtarget focal length. According to the invention, under the condition that the effective control bits of the driving chip are few, focusing control is achieved through the independent control end of the zoom lens, and the focusing moving precision is guaranteed.

The invention belongs to a balance compensation structure and a balance compensation mode suitable for a spindle box of a numerical control milling and boring machine with a ram. The balance compensation structure mainly comprises a balance and tilt compensation unit and a spindle box three-hanging-point mechanism, wherein the spindle box is provided with front, middle and rear hanging points; the three hanging points are connected with the gravity center of a balance weight through a connecting rope and a pulley group; compensation oil cylinders are arranged at the front and rear hanging points; and an oil circuit control device consisting of an electro-hydraulic proportional valve, a hydraulic control one-way valve and an electromagnetic reversing valve is arranged in front of each compensation oil cylinder. The balance compensation mode is that: a numerical control system measures the working condition of the ram in real time, and oil pressure in each oil cylinder is controlled by the electro-hydraulic proportional valve. By the balance compensation structure and the balance compensation mode, the inclination of the spindle box can be corrected in real time, the structure, the process and control are simple, and the movement accuracy of the ram of the milling and boring machine and the machining accuracy of a workpiece are ensured.

The invention discloses an imperfect degree-of-freedom parallel connection five-axis computerized numerical control laser cutting machine, relating to a laser cutting machine with an imperfect degree-of-freedom parallel connection five- axis drive mechanism. The laser cutting machine comprises a machine body, an X-direction guide rail, a beam, a laser cutting heat and a controller, wherein the side surface of the beam is provided with a Y-direction guide rail, the laser cutting head is movably connected with the Y-direction guide rail through an imperfect degree-of-freedom parallel connectionmechanism; and the imperfect degree-of-freedom parallel connection mechanism comprises a Y-axis slide carriage device, a Z-axis slide carriage device, a cross, a laser head installing support, four equilong connecting rods and four linear driving devices. The invention realizes five-axis motion of the conventional laser cutting head through the imperfect degree-of-freedom parallel connection device, wherein the beam realizes basic X-direction motion relative to the motion of the machine body; four drive blocks respectively move and drive the laser heat installing support to make translation or rotation motion through respective connecting rods, mutual motion among the four drive blocks realizes combined motion of an Y axis, a Z axis, an A axis and a C axis; and the imperfect degree-of-freedom parallel connection five-axis computerized numerical control laser cutting machine has skilled structures of all parts, large rigidity and small inertia, so that the motion precision can be ensured.

The invention discloses a three-dimensional five-axis computerized numerical control laser cutting machine, relating to a computerized numerical control laser cutting machine with a composite motion parallel connection five-axis drive mechanism, which comprises a machine body, an X-direction guide rail, a beam, a laser cutting head and a controller, wherein the side surface of the beam is provided with a Y-direction guide rail, and the laser cutting head is movably connected with the Y-direction guide rail on the side surface of the beam through a composite motion parallel connection mechanism. The invention realizes five-axis motion of the conventional laser cutting head through the composite motion parallel connection device, wherein the beam realizes basic X-direction motion relative to the motion of the machine body; and combined motion of an Y axis, a Z axis, an A axis and a C axis is realized through the composite motion parallel connection mechanism. The three-dimensional five-axis computerized numerical control laser cutting machine has an ingenious design, skilled structures of all parts, large rigidity and small inertia, so that the motion precision can be ensured. The three-dimensional five-axis computerized numerical control laser cutting machine integrates a lathe technology, a robot technology and a computerized numerical control technology, and has the advantages of simple structure and complex and accurate arithmetical operation in comparison with the traditional serial connection lathe. The three-dimensional five-axis computerized numerical control laser cutting machine has the remarkable advantages of large rigidity, rapid response speed, high precision, strong adaptability, high technical additional value and the like.

The invention discloses a ball screw support device. The ball screw support device comprises a support rod (72), a spring (76), an idler wheel (71), an upper inclined plate (73) and a lower inclined plate (75), wherein the spring (76) sleeves the support rod (72); the upper inclined plate (73) is arranged on an external workbench (3); the lower inclined plate (75) is arranged on the support rod (72); the idler wheel (71) is arranged on the top end of the support rod (72). According to the ball screw support device, the ball screw bending is reduced, the deflection deformation is reduced, and thus the movement precision of the workbench is guaranteed; the precision and the rigidity of a machine tool are improved. The ball screw support device is simple and reliable in structure, good in maintainability and low in cost.

An embodiment of the invention discloses a singular point avoiding method, a singular point avoiding device, equipment and a medium. The singular point avoiding method comprises the steps of: acquiring a sampling point in a current planned path, and judging whether the sampling point is arranged in a singular region or not; if the sampling point is arranged in the singular region, selecting at least one candidate interpolation point in a candidate interpolation point region; for each candidate interpolation point, calculating cost values of the candidate interpolation points based on a presetcost function, wherein the cost function is constructed based on a distance consideration function and a motion speed consideration function; and determining a target interpolation point according tothe cost values of the candidate interpolation points, and re-planning a path based on the target interpolation point. According to the singular point avoiding method and the singular point avoiding device, the target interpolation point is selected through comprehensively considering the distance between the candidate interpolation points and the axis of the singular region as well as movement speeds of the candidate interpolation points, so that the determination of the interpolation point is more precise, and a mechanical arm can smoothly and stably avoid the singular point.

The invention discloses a control method of a waypoint type walking robot. The method comprises a waypoint forming step, a straight-line system walking step and an interaction step. A human body in front of the robot is found in time, an advertisement pushing manner is immediately transformed, different crowds can be identified, and targeted advertisement injecting is carried out, so that the advertisement communication efficiency and effectiveness are greatly improved; through a step calculation manner, information feedback is carried out, an algorithm is applied to correct the acceleration and deceleration of a motor, and therefore the higher stability is achieved, and errors are reduced; the robot can walk without assistance of black lines, and can precisely move according to the path; and the biased error of hundreds of meters in a straight line can be smaller than 5 degrees.

The invention provides a moving mechanism which comprises vibration tables, a horizontal sliding table guide rail, a horizontal sliding table, vibration table guide rails and a foundation steel plate. The horizontal sliding table guide rail and the vibration table guide rails are pre-embedded in the foundation steel plate. The vibration tables move on the vibration table guide rails through vibration table moving wheels. The horizontal sliding table moves on the horizontal sliding table guide rail through a horizontal sliding table moving wheel. The cross sections of the horizontal sliding table guide rail and the vibration table guide rails are identical in structure, an inverted 'T'-shaped groove is machined in the center of each guide rail, and a 'V'-shaped opening is machined at the upper end of each inverted 'T'-shaped groove. The vibration table moving wheels and the horizontal sliding table moving wheel are identical in structure and are stepped cylinders, the center of each stepped cylinder is a protruded 'V'-shaped circular truncated cone, circular truncated cones are symmetrically distributed at the two ends of each 'V'-shaped circular truncated cone, and the included angle of the 'V'-shaped circular truncated cones is consistent with the included angle of the 'V'-shaped openings. The moving mechanism can achieve six kinds of vibration functions and is accurate in positioning and flexible and convenient in movement.

The invention provides a grinding wheel dresser for a grinding machine, which aims at solving the technical problems of poor universality and waste of processing time and labor in the existing grinding wheel dresser. The grinding wheel dresser comprises a diamond pen base, a swing rod, a machine base and a driving device, wherein a diamond pen is arranged on the diamond pen base; both ends of the swing rod are rotationally supported at both ends of the machine base; the driving device is used for driving the swing rod to rotate. The grinding wheel dresser is characterized in that a shaft hole is formed in the swing rod, a slide sleeve is arranged in the shaft hole, and the diamond pen base is inserted into the slide sleeve; slide blocks are arranged at both radial ends of the inner side of the shaft hole and extend in the axial direction, both radial ends of the slide sleeve are provided with slide grooves which are matched with the slide blocks, the two sides of each of the slide blocks and the slide grooves are provided with arc-shaped grooves, and steel balls fill the opposite arc-shaped grooves; a thread sleeve is arranged at the tail part of the slide sleeve, and is connected with an adjusting rod through threads, the adjusting rod is parallel with the axis of the shaft hole, an end cover is covered at the tail part of the shaft hole, the adjusting rod penetrates through the end cover and is vertically and fixedly connected with a dial, a spring is sheathed on the thread sleeve, and both ends of the spring are respectively abutted against the slide sleeve and the end cover.

The embodiment of the invention discloses a projection host, and belongs to the technical field of projection. The projection host comprises a light source system used for emitting a light beam; an optical-mechanical system, located on the light emitting side of the light source system, and the optical-mechanical system being used for receiving the light beam and emitting a modulated light beam after modulation; and a lens, comprising a first moving assembly and a lens barrel. The first moving assembly comprises a first moving bearing shell and a first control assembly, the first moving bearing shell is slidably connected to the light emitting side of the optical-mechanical system, and the first control assembly is fixed to the light emitting side of the optical-mechanical system and is in transmission connection with the first moving bearing shell; the lens barrel is connected with the first movable bearing shell, and the first movable bearing shell is provided with a first light hole. According to the embodiment of the invention, the first control assembly drives the lens barrel to move, so that the movement precision of the lens barrel is ensured, the position accuracy of the lens projection area after movement is ensured, and the projection effect of the projection host is improved.

The invention discloses a rubber tapping machine used for cutting bark of a rubber tree. The rubber tapping machine is composed of a rubber tapping track control mechanism, a cutter control mechanism, a fixed descending stroke control mechanism and a rubber tapping machine tree leaving alarm, a rotating square bar for controlling a rubber tapping track and a lead screw are simultaneously connected with a unique power source motor of the novel rubber tapping machine through a change gear, a driving walking gear on the rotating square bar meshes with teeth on the inner wall of an inner gear ring, the cutter control mechanism is composed of a linkage ratchet gear connected with a motor gear and a sliding block mechanism, the fixed descending stroke control mechanism is composed of pawls which are fixed to the inner gear ring, a clamping pin, a linkage lead screw ratchet wheel which is fixed to the lead screw and a lock groove disc, and the rubber tapping machine tree leaving alarm is composed of a tree surrounding wire and a power failure alarm. According to the novel rubber tapping machine disclosed by the invention, parts including a power source are reduced through structural optimization design, the cost and the failure rate are reduced, and meanwhile, the control precision is improved.

The invention belongs to the technical field of automobile part processing, and particularly relates to a four-station turntable type hot air welding machine and a welding method thereof. The four-station turntable type hot air welding machine comprises a machine frame with a working table board, and a turntable assembly, a hot air assembly and a riveting assembly which are arranged at the side ofthe turntable assembly are arranged at the machine frame. The four-station turntable type hot air welding machine has the advantages that automatic welding operation of a company mark and a company mark ring at a safety air bag cover can be realized, and the operation threshold is low, time and labor are saved in the welding process, and no harm is caused to workers in the welding process, and the welding quality of the company mark and the company mark ring can be effectively guaranteed. The welding method applying the four-station turntable type hot air welding machine comprises the following steps of 1) a pre-processing process; 2) a code scanning process; 3) a hot air process; 4) a riveting process; and 5) a shooting and discharging process. The welding method has the advantages thatthat the actual processing efficiency of the welding process is systematically improved.

A portable cantilever-type numerical control cutter is characterized in that a transverse stepping motor drives a duplicate gear through a planetary gear reducer, an upper gear and a lower gear of the duplicate gear are engaged with a transverse moving rack rod and a balance rack rod respectively, a cutting torch support is fixedly mounted at the front ends of the transverse moving rack rod and a transverse guide rod, a lifting rack rod is arranged on the cutting torch support, a bevel gear on a lifting motor is engaged with the lifting rack rod, and a cutting torch is mounted on a fixed support at the lower end of the lifting rack rod. A longitudinal stepping motor drives the planetary gear reducer, a longitudinal gear on the reducer is engaged with a rack on a guide rail, a guide wheel shaft and an eccentric guide wheel shaft which are distributed on two sides of the guide rail are fixed to two ends of the bottom edge of a trolley, and guide wheels close to the guide rail are mounted on the wheel shafts. The portable cantilever-type numerical control cutter is high in moving precision and fine in transverse movement stability, longitudinal movement is pure rolling with gapless guide so that the portable cantilever-type numerical control cutter is excellent in cutting precision and comparable to a gantry-type numerical control cutter, and the portable cantilever-type numerical control cutter is easy in mounting and carrying and long in service life.

The invention discloses an integrated and interchangeable rear material-blocking device of a bending machine and belongs to the technical field of bending machines. The integrated and interchangeable rear material-blocking device of the bending machine comprises a pair of beams, X-axis components, Y-axis components, Z-axis components, finger-blocking components and a balance adjusting component, wherein the beams are used for installing the X-axis components, the X-axis components are used for driving the Y-axis components to move in the X-axis direction, the Y-axis components are used for driving the Z-axis components to move in the Y-axis direction, and the Z-axis components are used for driving the finger-blocking components to move in the Z-axis direction. The balance adjusting component comprises an adjusting plate connected with the beams and a supporting plate connected with the bending machine; adjusting screw nails at two ends of the adjusting plate penetrate through the adjusting plate and props against the supporting plate; adjusting holes in two ends of the adjusting plate are internally provided with fastening screw nails which are used for connecting the adjustment plate with the supporting plate; and two sides of a hole in the middle of the adjusting plate is provided with a pair of blocking plates, a positioning column penetrates through the hole and is connected to the supporting plate, and the blocking plates are provided with locking screw nails which are used for pressing the positioning column tightly. According to the integrated and interchangeable rear material-blocking device of the bending machine, the material-blocking position is adjustable, and the integrated and interchangeable rear material-blocking device of the bending machine is of better universality, interchangeability and impact resistance, and the problem that the positioning of the material-blocking position is inaccurate due to machining and assembly errors is eliminated.

The invention discloses an assembling and scraping method of a spindle box square hole assembling and scraping device. The process is as follows: a moving seat is pushed, so that a ram part moves stably on a precision linear guide track to a position near the front end of a spindle box; a handle on a ram support adjusting mechanism is rotated, and a center of the ram part and a square hole center of the spindle box are enabled to be equal in height by the aid of a lead screw nut adjusting mechanism; a traction cable is connected with two ends of the ram part, bypasses a fixed pulley on a traction pulley support, and is connected with a lifting hook of a travelling crane; the ram part is pushed into a square hole of the spindle box; and the ram part is pulled forward and backward through the movement of the lifting hook on the travelling crane, and assembling and scraping are performed. With the adoption of the technical scheme, the production efficiency is improved, a potential danger that the ram part collides into the spindle box, so that a workpiece is bumped or damaged is eliminated, the manufacturing accuracy of a product is improved, the product quality is greatly improved, and human power and material resources are saved.

The invention belongs to the field of machining and particularly relates to automatic feeding equipment for symmetrical positions of paired workpieces. The equipment comprises a bottom frame, a hopper, a vibrating disk, a conveying rail which is mounted at an outlet of the vibrating disk and used for conveying parts, and an assembly line mounted on the bottom frame, wherein a carrier is arranged on the assembly line, a mounting plate is fixedly connected with the bottom frame, the mounting plate is provided with a material receiving part, a transplanting mechanism used for mounting parts ontothe carrier from the material receiving part and a positioning mechanism used for positioning the carrier, the transplanting mechanism has no displacement in the direction of the assembly line, and the movement tracks of the transplanting mechanism are the same all the time. The equipment is advantaged in that the positioning mechanism is arranged so that two part mounting holes in the carrier move to the same mounting position by several times, moving tracks of the transplanting mechanism are the same, and moving precision of a pneumatic clamping jaw during part clamping is kept, through a structural form, moving precision of the positioning mechanism driving the carrier to move can be kept consistent, and errors are reduced.

The invention discloses refrigerator compressor performance test equipment. The equipment comprises a mounting base, a first retaining device and multiple test units, wherein the first retaining device and the multiple test units are sequentially fixed on the mounting base; each test unit comprises a non-return device, a venting device, an energizing device and a second retaining device which are sequentially fixed on the mounting base; the first retaining device, the non-return devices and the second retaining devices are sequentially fixed along a refrigerator compressor conveying line, and the venting devices and the energizing devices are fixed on two sides of a detection station on the refrigerator compressor conveying line respectively. Jacking devices are further arranged on the refrigerator compressor detection station between the venting devices and the energizing devices and drive positioning tooling plates through double guide bar cylinders to ascend so as to lift refrigerator compressors, and the refrigerator compressors are separated from the conveying line. The equipment is compact in structure, high in adjusting speed and high in universality, is applicable to different types of refrigerator compressors and guarantees accuracy and reliability of tests.