433results about How to "High movement accuracy" patented technology

A wearable input device includes a body and a soft battery. The body is connected to the soft battery to form a collar range, and the soft battery surrounds a hand of a user. The soft battery supplies an electric power to a finger-contact control module and a wireless transmitter in the body, such that the finger-contact control module senses a movement of an object (for example, a finger) on the body, and generates a control signal corresponding to a moving position of the object, and then the wireless transmitter transmits the control signal to a computer host, thus manipulating a cursor on an operating system frame of the computer host.

The invention discloses a four-shaft machine tool calibration method based on the multi-station measurement of a laser tracker, and belongs to the technical field of precise testing. The method comprises the steps: firstly determining the coordinates of measurement points in a movement space range of a four-shaft machine tool, moving a target lens to each measurement point during measurement, enabling the laser tracker to carry out transfer measurement on a rotating shaft platform along with a rotating shaft, and obtaining the relative interference length measurement value of each measurement point to an initial measurement point at different station; secondly solving the coordinates of each station and the distance between the corresponding station to the initial measurement point through employing a formula for the distance between two points, the principle of least squares and a laser tracker station solving optimization algorithm; thirdly enabling the coordinates of the measurement points, the coordinates of the stations and the distances from the corresponding stations to the initial measurement point as the initial values, and solving and obtaining the correction value of each measurement point in the directions of three moving shafts of the four-shaft machine tool through the expansion of the first-order Taylor series of an interference length measurement error equation; finally building the mapping relation between the coordinate information of the stations of the laser tracker and the angle of the rotating shaft through circle fitting, and achieving the high-precision measurement of an rotating angle error of the rotating shaft.

A camera module according to an aspect of the invention may include: a housing; a fixed unit fixed to the inside of the housing; a lens barrel provided in the housing and having at least one lens; and a moving unit moved and supported by the fixed unit by a predetermined magnetic force, and moving the lens barrel along an optical axis, such that driving accuracy and reliability can be increased when performing auto focus or zoom.

The invention provides an industrial robot dragging teaching method without adopting a torque sensor. The method comprises the steps that a joint inverse dynamic model is adopted for joint moment compensation, so that a joint is controlled to be in a near-zero force balanced control state; according to a jitter control principle, feedforward is controlled through drive jitter within a dead zone of friction force, so that the joint is in an activated state, velocity integral grain of a universal control system adopting serial PID control is one order of magnitudes that of a system adopting normal control, and the controller velocity integral gain is increased to improve the dynamic response of the control system in the dead zone of the friction force; a slope dynamic compensation method is adopted for compensating coulomb friction; and a dragging teaching technology is achieved in a universal position control mode, so that switching of a control mode of a driver is avoided. According to the dragging teaching method adopted in the invention, the torque sensor is not needed, and the cost is low.

The invention relates to a pipe-type PECVD graphite boat assembling and disassembling piece system. The system comprises a graphite boat delivery mechanism (1), a silicon slice feeding mechanism (2), a silicon slice discharging mechanism (3), a silicon slice grabbing and delivery mechanism (4) and a graphite boat assembling and disassembling mechanism (5), wherein the graphite boat delivery mechanism is used for carrying a graphite boat to move horizontally; the silicon slice feeding mechanism is used for taking silicon slices to be processed out of a flower basket; the silicon slice discharging mechanism is used for conducting overturning and discharging on the processed silicon slices; the silicon slice grabbing and delivery mechanism is used for absorbing the silicon slices and delivering the silicon slices in a linear motion mode; the graphite boat assembling and disassembling mechanism is used for assembling and disassembling the graphite boats. The pipe-type PECVD graphite boat assembling and disassembling piece system is precise to position and high in production efficiency.

In a mobile device for moving a mobile body in mutually orthogonal two- or three-axis directions, a positional error of the mobile body with respect to a direction orthogonal to preset two-axis directions out of the above two- or three-axis directions is used to determine, by using a sequential two-point method, a straightness error curve representing a change status along one-axis direction out of the above two-axis directions; the straightness error curve determining is repeated for the other one-axis direction out of the above two-axis directions.

The present invention provides a workpiece three-dimensional dimensions automatic detection system and method based on laser scanning. The system comprises a three-dimensional moving platform, a three-dimensional moving platform numerical control module, a laser scanning sensor, a laser scanning sensor numerical control module, a laser scanning sensor rotating mechanism, a power module and detection software, and belongs to the technical field of three-dimensional scanning and digital analysis. According to the system, the numerical control three-dimensional moving platform is used, so that total dynamic measurement is implemented, manual movement detection is replaced, and detection efficiency is improved; a pneumatic floating slideway is used, so that movement precision is improved; thelaser scanning sensor rotating mechanism is assembled on a Z-axis pneumatic floating slideway, so that deflexion of the laser scanning sensor can be implemented, and a workpiece is scanned from different angles; and a blue line sweeping laser scanning sensor is selected, so that anti-interference is strong, and measurement precision is high.

The invention discloses a two-sided automatic polishing machine, which comprises a horizontally arranged rotary table, an outer box, an upper abrasive wheel and a lower abrasive wheel, wherein the rotary table is provided with at least two through holes which are station holes; distances from the station holes to the center of the rotary table are the same; each station hole is used for transmitting a processing workpiece; the outer box is used for accommodating the rotary plate and is provided with an upwards opening; a through hole is arranged in a bottom face of the outer box; the upper abrasive wheel and the lower abrasive wheel are respectively arranged above and below the rotary plate and are horizontally arranged; rotating directions of the upper abrasive wheel and the lower abrasive wheel are opposite; the upper abrasive wheel can be lifted up and down, the lower abrasive wheel penetrates through the through hole of the outer box when being used for polishing, so that the upper surface of the lower abrasive wheel and a base plate of the rotary plate are coplanar; and wheel faces of the upper abrasive wheel and the lower abrasive wheel pass through the station holes in the middle parts of the upper abrasive wheel and the lower abrasive wheel when being rotated after stretching into the rotary plate. The two-sided automatic polishing machine has the beneficial effects that a table board of a radiator can be efficiently polished, the production efficiency is high, and the problems that the production efficiency for the table board of the radiator is low, the product quality is instable, and the market competitiveness is weak are solved.

The invention discloses a pressure-maintained transferring system for deep sea microbes. The pressure-maintained transferring system comprises a connection unit with a valve, a pressure-maintaining barrel communicated with the connection unit and a sampling unit installed in the pressure-maintaining barrel. The sampling unit comprises: a sampling barrel, which is axially and movably installed and has an open end that may extend out from the pressure-maintaining barrel, penetrate the connection unit and then implement sampling; a piston, which is circumferentially fixed in the sampling barrel, capable of axial sliding and used for pushing a material in the sampling barrel out from the open end; a first driving mechanism, which comprises a first power supply, a screw rod and an axially slidable slide block in thread transmission with the screw rod; and a second driving mechanism, which comprises a second power supply, a sampling driving rod and an axially slidable sampling transfer rod in circumferential fixed connection with the sampling driving rod. According to the invention, parallel double-shaft driving arrangement is employed, so the interior structure of the pressure-maintaining barrel is simplified, the structure of the system is more compact, and manufacturing cost is reduced; and axial movement power is transmitted through thread transmission, so stability, reliability and high movement precision are realized.

A sheet thickness online measurement system based on laser ultrasound comprises a light path system integration, a high-temperature detection meter, a data acquisition system integration and a data processing system integration, wherein the light path system integration comprises a U-shaped grounding frame, a three-dimensional mobile platform and a control cabinet integrating with a laser transmitter and a light path regulating system; the data acquisition system integration comprises a capacitive displacement sensor, a pre-amplifier and a high-speed data acquisition card, the capacitive displacement sensor is arranged at the first distance position below the alignment position of the bottom surface of a sheet, the data processing system integration converts bipolar signals having aliasing peak values and complex background noise into unipolar signals having clear peak values and low background noise, and therefore the time when longitudinal waves and transverse waves reach the alignment position of the bottom surface of the sheet first two times is accurately obtained, and the thickness of the sheet is calculated. The sheet thickness online measurement system has the advantages that the sheet thickness online measurement system is suitable for online measuring the thickness of the sheet under extreme environments such as high temperature, strong corrosion and high radiation, thickness measurement is accurate, and errors are small.

The invention discloses a multi-degree-of-freedom ping-pong automatic serving device. The device comprises a serving cylinder, a transverse driving structure and a vertical driving mechanism, wherein the transverse driving structure and the vertical driving mechanism are used for controlling the serving cylinder to move, and a serving motor fixing plate is fixedly arranged on the rear portion of the serving cylinder; a serving motor is arranged on the serving motor fixing plate, a serving spindle is arranged on the serving motor, and a crank is fixed on the serving spindle; a connecting rod is hinged to the top of the crank, and an elastic block is arranged in the serving cylinder; a piston rod is fixed at the rear end of the elastic block, the connecting rod is hinged to the piston rod, and a ball falling hole is formed in the top surface of the serving cylinder; a telescopic hose is arranged above the ball falling hole, a ball bin is arranged above the telescopic hose, and the top of the telescopic hose is connected with the bottom of the ball bin; the bottom of the telescopic hose is connected with the ball falling hole, and a suspension mechanism is arranged on the ball bin; a ball baffle is fixed on the top of the rear end face of the elastic block. The device has the advantages that the structure is simple and the automation degree is high.

The invention relates to the technical field of immersed tube prefabrication construction, in particular to a dry dock sequential method full-section integral immersed tube prefabrication formwork system. The system comprises an inner mold system, an outer mold system and an end mold system, wherein the inner mold system is located on the inner side of an immersed tube casting space and is connected with the outer mold system located outside the immersed tube casting space into a whole through the end mold system positioned at the longitudinal end part of the immersed tube casting space, the lower end of the inner mold system is provided with an inner mold travelling support device which is used for carrying out longitudinal, transverse and vertical position adjustment on the inner mold system, and the outer mold system is an outer side formwork structure capable of being adjusted in the longitudinal direction, the transverse direction and the vertical position. The immersed tube prefabrication method has the advantages of being accurate in position adjusting, less in main body structure damage and capable of operating all weather, so that the technical problems of sequential prefabrication, adjacent operation, compact space, longitudinal long-distance travel of an ultra-large super-heavy formwork is long, being prone to deviation and the like which occur to a sequential methodare solved.

The invention relates to an integral doffing device for a ring throstle, comprising a lifting beam and a lifting connecting rod mechanism which is hinged with the lifting beam, wherein, an inlet and outlet swinging arm is hinged on the lifting beam; one end of the inlet and outlet swinging arm is hinged with a beam of a yarn holding device, and at least one inlet and outlet cylinder is hinged between the other end of the inlet and outlet swinging arm and the lifting beam; the lifting connecting rod mechanism at least comprises two lifting connecting rods; a lifting swing stem is hinged on each lifting connecting rod; one end of the lifting connecting rod is hinged to the lifting beam and the other end of the lifting connecting rod is hinged with a lifting tension rod; and two inlet and outlet swinging arms are at least hinged on the lifting beam, and one inlet and outlet swinging arm is a bended swing stem. The doffing device has a compact structure, is convenient to operate and use, not only can be matched with a novel ring throstle but also is suitable for modifying a prior ring throstle, and has wide use range and strong applicability.

The invention discloses a portable small 3D printer which comprises a box body, a case cover and a handle, wherein a 3D printing mechanism is placed in the box body and comprises a bottom plate; a first light rod and a second light rod are connected to the top of the bottom plate, a mobile plate is connected between the first light rod and the second light rod, and a Y-axis mobile motor and a Y-axis transmission lead screw pair are mounted on the bottom plate; a third light rod and a fourth light rod are connected to the top of the mobile plate, a printing platform is connected between the third light rod and the fourth light rod, and an X-axis mobile motor and an X-axis transmission lead screw pair are mounted on the mobile plate; a hinging block is hinged to the side face of the bottom plate, a lifting bracket is arranged above the hinging block, a Z-axis lifting motor and a lifting guide rail are mounted on the top of the hinging block, the Z-axis lifting motor is connected with a lifting lead screw, the lifting guide rail and the lifting lead screw pass through the lifting bracket, and a printing head is mounted on the lifting bracket. The portable small 3D printer disclosed by the invention is compact in structure, small in size, convenient to carry and convey, high in mobile precision in all directions and strong in practicality.

The present invention is aimed to simplify a configuration of a device and to reduce installation and running cost. A carriage is driven on a curved potions 31a, 32a of an oval-shaped endless moving path 5 under a guide of rails 31, 32. The carriage positioned on the ground side is engaged with a carrier 37 driven along the curved portions 31a, 32a. The carriage is towed over the entire length of the curved portion by the carrier 37.

The invention discloses a placing boom control method. The placing boom control method comprises the steps that a two-dimensional absolute coordinate system is established on the horizontal plane; a two-dimensional dynamic coordinate system is established on the horizontal plane, wherein the connection line between the original point of the two-dimensional absolute coordinate system and the original point of the two-dimensional dynamic coordinate system is an axis of the two-dimensional dynamic coordinate system, the original point of the two-dimensional absolute coordinate system is located on the rotating central point of a placing boom or the tail end point of the placing boom, and the original point of the two-dimensional dynamic coordinate system is located on a remote control device; the angles formed between the swinging direction of an operating hand shank of the remote control device and the coordinate axes of the two-dimensional dynamic coordinate system are obtained; the angle that the two-dimensional dynamic coordinate system rotates relative to the two-dimensional absolute coordinate system is obtained; through coordinate system conversion computation, the angles formed between the swinging direction of the operating hand shank of the remote control device and the coordinate axes of the two-dimensional absolute coordinate system are obtained to control the tail end of the placing loom to move. The invention further discloses a placing boom control device and a concrete pump truck. According to the placing boom control method, the placing boom control device, the concrete pump truck and a material distributing machine, the degree of intellectualization is high, operation difficulty of an operator is reduced, and moving accuracy and flexibility performance of the tail end of the placing loom are improved.

The invention relates to belt material production equipment, in particular to a belt material fixed length cutting device. The belt material fixed length cutting device provided by the invention is characterized in that a metering wheel is arranged on a machine frame through a sleeve, in addition, a fixing wheel matched with the sleeve is arranged on the machine frame, a fixing shaft is connected and arranged onto the machine frame through a screw bolt, the connection between the metering wheel and the machine frame is reliable, in addition, the structure is simple, the work stability performance of the metering wheel in the work process is improved, and the maintenance is convenient; in addition, a saw blade is moved through adopting a lead screw, when the saw blade moves in the concrete use process, the movement of the saw blade is stable, and in addition, the moving precision is high; through the arrangement of the lead screw, the moving tracks of the saw blade during the cutting and the resetting cannot be coincident, the interference of the saw blade with the belt materials during the resetting is prevented, the safety performance during the belt material cutting is improved, in addition, the saw blade cannot be easily damaged, and the service life of the saw blade is prolonged; further, through the arrangement of a protection cover, the safety performance during the belt material cutting is further improved.