781results about How to "High repeat positioning accuracy" patented technology

The invention discloses an intelligent compensation system for geometrical and heating position errors of numerical control machine, which comprises a numerical control machine, a temperature real-time monitoring unit, an I/O data interaction unit and a center control unit, wherein the center control unit comprises a real-time compensation module, a temperature signal processing module, an online automatic modeling module, a dynamic regulation module, a machine performance analysis module and a remote monitor module. The system is capable of monitoring the temperature of external environment and the change of processing condition in real-time, and thereby updating the compensation model in real-time to further accomplish bidirectional compensation for the geometrical and heating position errors of the motion shaft of numerical control machine. The intelligent compensation system disclosed by the invention improves the location precision and repeating location precision in machine processing, and solves the problems of precision compensation in numerical control machine better.

The invention discloses a series-parallel robot combined processing system and a control method thereof. The system comprises a series robot, a parallel robot, a controller, a platform, workpieces to be processed and a terminal executer. The controller controls the series robot and the parallel robot by adopting a layering control system, the upper controller is used for distributing tasks and controlling movement, and the lower series-parallel robot is used for driving hardware and executing the tasks. The invention combines the system hardware with software, thereby enhancing the automation degree, production efficiency, bearing capability and repetitive positioning accuracy of processing, strengthening the flexibility and adaptability of the system, realizing real-time control on line, and having a certain intelligent performance.

The invention discloses a multi-material laser direct writing conformal system and a method. The system comprises a vacuum seal case, a multi-joint mechanical arm, a multi-material laser direct writing head and a control system for controlling the constituent parts, wherein the mechanical arm and the laser direct writing head are arranged in the vacuum seal case; the laser direct writing head comprises a direct writing head body, a laser and at least two groups of material cylinders; a material channel and a laser focusing channel communicated with the laser and the material cylinders respectively are arranged on the direct writing head body; and the at least two groups of material cylinders are arranged on the direct writing head body in parallel. A particular process is as follows: the mechanical arm drives a workpiece to move along a set path; a material controller selects the corresponding material cylinders; a discharge head delivers and allows materials to be attached to the surface of the workpiece; and at the same time, laser light emitted from the laser focusing channel carries out solidifying or sintering forming on the attached materials. According to the invention, a control process is simple, the forming precision is high, continuous production is achieved, and production efficiency is improved.

A position-posture sensing system of movable robot is composed of a photoelectric sensor for detecting the change of position and posture and converting the change to digital signals, an elastic pressing unit for ensuring the proper distance between said photoelectric sensor and ground, and a controlling-processing circuit consisting of a single-chip microprocessor, a communication interface chip, and the firmed programs. Its method is also disclosed.

The invention relates to a precision five-axis double-station position changing machine. The machine comprises a rotating base, an upright post box arranged on the rotating base in a horizontal rotating mode, a first servo motor for driving the upright post box to rotate, and a first clamping device and a second clamping device which are respectively arranged on the two sides of the upright post box, wherein the first clamping device comprises a first rocker arm, a second servo motor for connecting the upright post box and the first rocker arm and driving the first rocker arm to vertically rotate, a first headstock and a first tailstock which are arranged on the first rocker arm, and a third servo motor for driving the first headstock to rotate; and the second clamping device comprises a second rocker arm, a fourth servo motor for connecting the upright post box and the second rocker arm and driving the second rocker arm to vertically rotate, a second headstock and a second tailstock which are arranged on the second rocker arm, and a fifth servo motor for driving the second headstock to rotate. Double position-changeable stations are arranged, so that a welding robot can continuously work, time consumption during production is reduced, production efficiency is improved, and rotating accuracy and repositioning accuracy are high.

The invention relates to a small five-axle-linkage numerical control milling machine, relating to a small numerical control milling machine. The invention aims at problems of conventional-size precise machine tool during cutting process of tiny parts, including large machine tool volume, high processing cost, low efficiency, uneconomical energy and space consumption and difficulties in the processing of complex tiny parts of three-dimensional camber structure. A portal frame-typed machine body is fixed on a base; and X-axis servo driving assembly is fixed on the portal frame-typed machine body; the upper end surface of the base is fixed with a Y-axis servo driving assembly; a Z-axis panel is connected with the X-axis servo driving assembly; a Z-axis servo driving assembly is fixed on the Z-axis panel; an electric principal shaft is fixed on the Z-axis servo driving assembly; a cylinder is connected with the Z-axis servo driving assembly; a microscope is connected with the Z-axis servo driving assembly; a working turntable provided with a motor therein is driven by a driving motor and forms a composite turntable rotating around the Z axis and the Y axis. The numerical control milling machine can realize five-axle linkage so as to satisfy processing requirements of three-dimensional camber structure and complex tiny parts.

The invention relates to a full-automatic assembly machine of LED bulbs. The full-automatic assemble machine comprises a frame, a station index plate, a main transmission mechanism, a cam and link control mechanism, a pneumatic control mechanism, a lamp holder feeding mechanism, a lamp holder feeding manipulator, a lamp holder rivet feeding manipulator, a bulb shell feeding manipulator, a lamp holder cable sorting device, a lamp cap rotating device, a lamp cap riveting device, a lamp cap fixing device, a lamp cap preheating and soldering device, a lamp holder rotating device, a gluing device and a lamp holder press-down device. Lamp holder fixtures are evenly distributed on the station index plate. A station is provided with a detection system and a rejects remover. Conventional assembly of LED bulbs is manpowered and has the problems such as low efficiency, high cost and high output of inferior-quality products. In manual assembly, one worker can only assemble 300 LED bulbs per 8 hours; the full-automatic assemble machine allows 1200 LED bulbs to be automatically assembled each hour, with 9600 LED bulbs assembled per 8 hours each day, and the efficiency is increased by 32 times.

The invention discloses an impacting-sliding composite frictional wear testing device and a method thereof. The method comprises the following steps that a spherical upper test piece is clamped on an upper clamp and a planar lower test piece is clamped by using a lower clamp; the lower clamp is controlled to move up and down by a precise screw lifting platform so that the upper test piece and the lower test piece come into contact; a servo motor drives the upper test piece to do up-down reciprocating motion at set frequency f, times N and displacement S by an eccentric disc, an upper knuckle bearing, a lower knuckle bearing, an impacting shaft, a spring leaf and an upper clamp, and carries out reciprocating impact on the lower test piece; in the impacting process, the spring leaf is deformed under the action of stress, so that impacting-sliding composite frictional wear between the upper test piece and the lower test piece is realized; and simultaneously, the force borne by the lower test piece is tested by a three-dimensional dynamic piezoelectric sensor connected with the lower clamp and is transmitted to a data acquisition control system, and a friction coefficient-cycle time curve is obtained by analysis. The impacting-sliding composite frictional wear testing device and the method disclosed by the invention have the advantages that the material can conveniently generate rigidity-adjustable impacting-sliding composite frictional wear, the automation degree is high and the repeatability of experimental data is good.

The invention discloses a variable rod length articulated arm type coordinate measuring machine which comprises a base, three rotary joints, three swing joints, a base measuring arm, two measuring arms and a measuring head, wherein the two measuring arms are telescopic measuring arms with the same structure, and each telescopic measuring arm comprises a core shaft, a fixing screw, a sleeve and a guide key; for each telescopic measuring arm, the core shaft is mounted in the sleeve, the two are in clearance fit, a section of guide slot is arranged on the inner wall of the sleeve, the guide key is arranged on the core shaft, the relative circumferential fixation of the core shaft and the sleeve can be realized through the guide key, two thread holes are arranged on the sleeve, the fixing screw is screwed in the sleeve through the thread holes, a section of V-shaped slot is arranged on the core shaft, and the fixing screw is screwed for leading an circular arc-shaped head of the fixing screw to tightly push the V-shaped slot of the core shaft, thereby realizing the relative fixation of the sleeve and the core shaft. The variable rod length articulated arm type coordinate measuring machine can reduce the size of measurement space by regulating the rod length of the measuring arms, reduce the measurement error, improve the measurement resolution, achieve the best measurement efficiency, and still have higher repeated positioning precision after the length change of the telescopic measuring arms.

The invention discloses a small circuit breaker with automatic opening and closing, which comprises a circuit breaker body and an automatic opening and closing drive mechanism; the circuit breaker body includes one to four circuit breakers; each circuit breaker includes a plastic case, an opening and closing handle and an operating Mechanism; the rotation center of each opening and closing handle is provided with a spindle hole; the automatic opening and closing drive mechanism includes a housing, a driving motor with a driving turbine, a linkage turbine, a linkage gear, an output spindle and a tripping linkage; The linkage gear is a sector gear, and linkage teeth are set on one-sixth to one-third of the outer peripheral wall of the linkage gear; the driving motor drives the linkage turbine to rotate through the driving turbine, and the linkage turbine drives the tripping linkage through its cam linkage part. The part rotates reciprocally within the preset angle range, and the opening and linkage tripping lever is moved by the lever part of the tripping linkage part to perform a quick opening action; the linkage turbine drives the linkage gear and the output spindle to rotate synchronously through its driving teeth. The invention can realize electric opening and closing.

The invention discloses a linearly-driven four-degree of freedom hybrid mechanical arm, which comprises a rack, wherein the two sides of the rack are symmetrically fixed with a linear motor guide rail of a linear motor respectively; a linear motor sliding block on the linear motor guide rail is connected with one end of a driving lever in a rotating way by a first hinge connected to the linear motor sliding block; the other ends of the two driving levers are symmetrically connected to the two ends of a movable platform in the rotating way by second hinges arranged on the movable platform respectively; a sleeve is connected to the middle part of the rack in the rotating way by a coaxial pin on the outer wall of the sleeve; a guide rod is sleeved in the sleeve; the bottom of the guide rod is fixedly connected with the movable platform; a swivel structure is arranged on the lower part of the movable platform; a support frame is connected to the swivel structure by a rotating shaft; and an end effector is connected to the support frame. The mechanical arm can effectively produce advantaged feeding directions or expand an operation range to realize the movement of high speed, high positioning accuracy and high repeated positioning accuracy.

The invention discloses a detecting device and detecting method for measuring the outer diameter and the inner diameter of the wheel of a motor train. The device mainly comprises a wheel vertical detection platform, a horizontal detection platform, a fine reference support device, a coarse reference support device, a transportation platform, a rotary driving device. Four laser displacement sensors, including laser displacement sensors A and B installed on a crescent board tail end IV and laser displacement sensors C and D installed on the wheel vertical detection platform III, horizontally move a [delta]L and a [delta]X in the radial direction of the wheel of the motor train respectively. The scanning measured values in each length unit of the four laser displacement sensors are stored in an acquisition card. Then the maximum value of the measured data of each laser displacement sensor is selected to be compared with standard data to calculate the outer diameter and the inner diameter of the wheel. Then, the above operation is performed after a wheel rotary driving device is rotated by a certain angle. After measurement is performed three times, average values are acquired to be used as the measured values of the outer diameter and the inner diameter of the wheel.

A professional glaze spraying six-axis robot belongs to the technical field of robot, and solves the problems of expensiveness, complicated operation and difficult maintenance of a foreign glaze spraying robot system in domestic application. The robot wrists are connected to a fourth, fifth and sixth axis motor through wrist transmission chains; the robot wrists, small arms and a fourth, fifth and sixth shaft seat assembly are orderly connected; the upper part of a big arm assembly is connected with the fourth, fifth and sixth shaft seat assembly through a bearing shaft seat one, and the part is connected with second and third axis large chain wheel assemblies; a second axis motor assembly drives the second large chain wheel assembly to rotate; a second axis cylinder assembly is fixed on a second and third axis box bodies and the second axis large chain wheel assembly; upper part of a third axis driving connecting rod through a bearing two is connected with the fourth, fifth and sixth shaft seats assemblies, and the lower part is connected with a third axis drive bracket through a bearing three; the third axis driving bracket is connected with the third large chain wheel assemblies; and the third axis motor assembly through a chain two drives the third large chain wheel assemblies to rotate. The invention is special for glaze spraying.

The invention relates to a swivel table driving device with double worm and gear backlash mechanisms, which comprises a box body and a gear ring which is connected with the swivel table, wherein the box body is provided with two worm and gear transmission mechanisms; the transmission mechanisms are connected between a gear and a motor; a worm is connected with gearwheels coaxial with the worm; the gearwheels are meshed with the gear ring; the axial worm centerlines in both worm and gear transmission mechanisms are in the same straight line; gaps are reserved between adjacent ends of two gears; outer sides of the two ends are sleeved with middle sheaths which can axially move relatively to the gears; and a regulating pad for regulating the axial position of the worms is arranged between a bearing seat for supporting the gears and the box body. The swivel table driving device ensures that the gear ring eliminates a reversal transmission gap during forward-reverse conversion, and has smooth transition. The swivel table has high swivel positioning precision, high repeated positioning precision, low manufacturing cost and low operation cost.

A compensation system with repeated error weighted stacking in a numerical control system comprises an instrument for error measurement, a unit for adding error compensation files, an error file interpreter, an error compensation fitting algorithm arithmetic unit, a unit for calculating error compensation values and a servo position closed-loop controller for receiving error compensation value instructions. The unit for calculating error compensation values comprises a program code parser and an interpolator. According to the compensation system, the positioning accuracy and the repositioning accuracy of numerical control machine tools can be improved, accuracy debugging of tools is greatly facilitated for users, simultaneously, the weighting compensation operation for errors is provided, compensation adjustment of the whole measuring range is achieved, the weighting operation can be performed on a certain error compensation curve, therefore the users can improve the positioning accuracy of the numerical control machine tools continuously, and the installation debugging process of machine tools is greatly facilitated for the users.

The invention discloses a linear-driven high-speed planar parallel mechanical arm comprising an engine base and a moving platform, wherein two sides of the engine base are respectively provided with a moving chain connected with the moving platform; the moving chains are driven by linear motors arranged on the engine base; and the engine base is connected with a sleeve through two coaxial pins, the sleeve is internally provided with a guiding rod, the guiding rod is connected with the sleeve through a gliding pair, the lower part of the guiding rod is connected with the moving platform through a hinge, the guiding rod is located between two parallelogram mechanisms, and the axis of the guiding rod is coplanar with the two parallelogram mechanisms. The linear-driven high-speed planar parallel mechanical arm disclosed by the invention can realize two-dimensional movement of the moving platform at higher speed in different ranges, can simultaneously maintain the attitude of the moving platform unchanged, and has the advantages of higher bearing capacity and high positioning precision and repeated positioning precision.

The invention relates to a redundant driving five-axis linkage hybrid machine tool which comprises a tool body, a column extender fixed on the tool body, a movable platform for installing a spindle, a working table for installing a workpiece to be cut, a first branched chain, a second branched chain, a third branched chain and a fourth branched chain, wherein the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are used for connecting the movable platform, the tool body and the column extender, and five-axis linkage control can be achieved. The redundant driving five-axis linkage hybrid machine tool has the advantages of being concise and compact in structure, relatively simple in kinematics, high in rigidity, good in repeated positioning accuracy, relatively large in working space and machine tool size ratio and the like.