12results about How to "Eliminate accumulated errors" patented technology

This invention provides a method for zeroing the cumulative error of a sensor under any mechanical transmission ratio, applicable to scanning turntables with any mechanical transmission ratio, and accurately measuring turntable position changes under any transmission ratio. The invention involves installing a light-shielding plate with a width of 3-4 mm on a rotating shaft. The light-shielding plate rotates with the shaft, while a photoelectric sensor is installed on a stationary frame, serving as a signal generator to zero the cumulative error. This method is low-cost, has simple hardware circuitry, and can accurately measure turntable position changes under any transmission ratio.

The application discloses to the technical field of high-speed cable production, and particularly relates to a size compensation riveting terminal equipment, which comprises a Y-axis moving part one, a terminal conveying flow channel and a feeding part located at the upper end of the Y-axis moving part one, a solder paste spraying unit and a riveting unit arranged on the moving end of the Y-axis moving part one, a feeding belt conveying part arranged on the moving end of the Y-axis moving part one, and a wire bending unit located below the riveting unit; the error processing assembly is further arranged below the terminal conveying flow channel, and the error processing assembly comprises a cylinder four fixed on the moving end of the Y-axis moving part one; the wire after bending is slightly straightened by the clamping jaw in the error processing assembly; the elasticity rebound of the wire is calibrated, the straight line segment direction of the wire from the bending point to the end part is ensured to be consistent, the "loose rope" is tightened, and most of the accumulated errors are eliminated from the physical source, so that the pressure of the subsequent compensation system is significantly reduced.

The application discloses a rotational mould inner container boss positioning debridement system and a use method, which comprises a coaxial positioning assembly, an inner container fixing assembly and a cutting debridement assembly, wherein the coaxial positioning assembly comprises a positioning bearing, the positioning bearing comprises a bearing bush and a bearing sleeve, the bearing bush is provided with a through cutting channel, the bearing sleeve is coaxially sleeved outside the bearing bush and is movable in relative rotation around the axis with the bearing bush, an outer thread section is arranged outside the bearing sleeve, and the bearing sleeve is fixedly connected with the boss interface of the inner container through screw threads; the inner container fixing assembly is used for fixing the inner container; the cutting debridement assembly comprises a cutting tool bit, a tool bit driving unit and a closed-loop control unit, is used for driving the cutting tool bit to rotate and displace to complete interface shaping, the positioning bearing is threadedly locked with the boss interface through the bearing sleeve, the high-precision rotation characteristics of the bearing are utilized to ensure the absolute coaxiality of the cutting tool bit and the boss interface, and the inner and outer ring separation design is adopted to avoid the boss interface being scratched by the rotating part.

The utility model discloses a kind of rotating devices, belong to X-ray automatic detection equipment technical field, specifically related to a kind of high-precision X-ray source intelligent rotating device, comprising: driving motor, installation bottom plate, hollow rotating platform and X-ray source assembly;The driving motor is installed in the rear side of the installation bottom plate, the hollow rotating platform is installed in the front side of the installation bottom plate, and the X-ray source assembly is installed on the hollow rotating platform;Arranged on the installation bottom plate is in-place inductor and limit block;The X-ray source assembly is provided with the inductive sheet matched with the in-place inductor;The utility model uses hollow rotating platform as core rotating element, and is directly driven by motor, and this design reduces the generation of cumulative error from the root, ensures the high-precision rotating performance;And simplify overall structure, under the premise of guaranteeing function, reduce volume, weight and cost, show significant technical advantage.

The utility model discloses an off-line arc alignment device for simulating an on-line continuous casting withdrawal and straightening machine, and belongs to the technical field of metallurgical rolling equipment. The device comprises an arc alignment table and an arc alignment sample plate installed on the arc alignment table, the arc alignment table comprises an off-line base and a plurality of positioning assemblies installed on the off-line base at intervals, and different withdrawal and straightening units in the withdrawal and straightening unit are supported and positioned through the multiple positioning assemblies; the positioning assembly comprises a connecting bottom plate and a positioning assembly seat; a bottom plate groove is formed in the top of the connecting bottom plate, and the connecting bottom plate is mounted at the top of the offline base; positioning center holes symmetrically distributed on the two sides of the third reference surface are formed in the outer side; measuring center holes are formed in the outer sides of a first positioning block, a second positioning block, a third positioning block and a fourth positioning block in the positioning assembly seat; according to the scheme, the arc table is optimally designed, so that the machining, adjusting and measuring processes of the arc table can be simplified.

The invention relates to the technical field of BT knife handles, in particular to a modular interface structure of a universal quick-change knife handle, which comprises a knife handle, a blind rivet and a thermal shrinkage rod, the knife handle is composed of a circular truncated cone section and a circular ring section, the interior of the knife handle is of a hollow structure, a first threaded hole is formed in the left end of the circular truncated cone section, and a second threaded hole is formed in the right end of the circular ring section; the blind rivet is in threaded connection with the cutter handle through the first threaded hole, and the thermal shrinkage rod is in threaded connection with the cutter handle through the second threaded hole. The blind rivet and the thermal shrinkage rod are designed into detachable and replaceable independent modules and are in standardized threaded connection with the knife handle, and accumulated errors which are difficult to control in multi-stage assembly are structurally eliminated; the thermal shrinkage rod is used as an independent standardized function module, and the universal threaded connector at the tail end of the thermal shrinkage rod can adapt to various knife handles with different standards and specifications.

The invention provides a horizontal four-axis synchronous positioning method for a vertical rail shuttle vehicle, and belongs to the field of logistics storage. A method for establishing an original point for system operation calculation based on a dynamic original point calibration process in combination with hole positioning and an absolute value type encoder is provided, a data structure for mapping physical goods allocations and absolute coordinate values is established through a goods allocation coordinate table, and a position closed-loop control means of multi-axis synchronization and external position loop control is dynamically implemented. Therefore, the design purpose of remarkably improving the positioning precision and reliability is achieved. Comprising the following execution steps: step (1), calibration; (2) initializing a system and calculating an absolute position; and (3) four-axis synchronous closed-loop motion control is carried out.

This application discloses a cleaning device and a cleaning system. The cleaning device includes a main body, cleaning components, an encoder, a controller, and a zero-position detector. The encoder includes a disk and an encoder board, which work together to acquire the rotation angle of the shaft. The controller controls the operation of the drive components based on the rotation angle of the shaft. The zero-position detector is fixed relative to the main body, and the controller controls the cleaning components to move to the initial position that triggers the zero-position detector when the cleaning device is started. This application designs an encoder board that works with the disk to acquire the rotation angle of the shaft, allowing for a smaller device size and better adaptation to compact cleaning devices. The zero-position detector establishes an absolute position reference for the initial position. When calculating the outward movement distance of the cleaning components relative to the main body, this initial position can be used for calculation, which helps eliminate accumulated mechanical backlash errors and improves the accuracy of the outward movement distance of the cleaning components relative to the main body.

This application relates to the field of fuel cells, disclosing an integrated injection current collector and its processing method, an inlet end assembly, and a fuel cell stack. The integrated injection current collector includes a current collector body and a sealing compound. The sealing compound is injection molded and bonded to the current collector body. The sealing compound covers the circumferential edges of each of the two sets of three-cavity ports on the current collector body and isolates them from the medium of the fuel cell stack. A sealing protrusion perpendicular to the current collector body is provided on both circumferential sides of each cavity of the sealing compound, and each sealing protrusion extends outward beyond the side of the current collector body itself. The integrated injection current collector, its processing method, inlet end assembly, and fuel cell stack of this application integrate the seal between the integrated injection current collector and the single cell and the inlet end insulation plate into one unit, eliminating the need for double-sided sealing strips on the single cell, isolating the three cavities from the medium, and eliminating the need to process sealing grooves on the core side of the inlet end insulation plate, thus eliminating cumulative errors and improving sealing performance.

This utility model discloses a fair-faced concrete formwork support system, including a formwork. Multiple equidistantly arranged Z-shaped steel beams are vertically fixed to the outer wall of the formwork. Multiple fixing holes are opened on the outer edges of both sides of the Z-shaped steel beams. These fixing holes are fixed to one side of the outer wall of the formwork using self-tapping screws. Multiple connecting grooves are opened on the outer wall of the Z-shaped steel beams. Multiple sets of channel steel main beams are fixed to the inner wall of the connecting grooves using T-bolts. Multiple sets of connecting holes are opened on the outer wall of the channel steel main beams. Two opposing channel steel main beams are connected by multiple sets of M12 bolts, forming a double-row channel steel system. The double-row channel steel system is fixed to one side of the outer wall of the formwork using five-section tie rods. The inner wall of the formwork is filled with concrete. This formwork support system can be mainly applied to fair-faced concrete formwork systems, facilitating the assembly of a large formwork system on a platform and on-site formwork assembly via lifting, thus improving the efficiency and quality of fair-faced concrete wall construction.

This invention relates to the field of machine tools, and particularly to an integrated processing and manufacturing device for excavator guard plates. The device includes a disc-shaped frame with a rotary table at its center for rotational limiting. A processing device is mounted on the frame corresponding to the rotary table. The processing device includes a limiting component, several processing mechanisms, and a drive mechanism. Through the circumferentially distributed layout design of the rotary table and several processing mechanisms, this invention achieves integrated continuous processing of excavator guard plates, from laser cutting and welding to surface deburring. The guard plate only needs to be clamped and positioned once during the entire processing flow, eliminating the need for transfer and transport between multiple devices. This effectively eliminates the cumulative errors caused by multiple positioning and unloading operations, improves the consistency of positional accuracy and processing efficiency between processes, and avoids the problem of occupying large amounts of space due to the use of multiple devices.

This invention discloses an absolute planar two-dimensional time-grating displacement sensor and measurement method based on an alternating electric field. Excitation signals are sequentially applied to the X-excitation pairs. When the sensing electrode generates a sensing signal, the application of excitation signals to the remaining X-excitation pairs is stopped. By processing the four electrical signals generated by the sensing group, the position of the moving scale substrate within the X-excitation pair and its displacement position within that pair are obtained, thus yielding the absolute two-dimensional time-grating displacement value of the moving scale substrate relative to the fixed scale substrate in the X direction. Similarly, the absolute two-dimensional time-grating displacement value of the moving scale substrate in the Y direction is obtained. Then, the absolute two-dimensional time-grating displacement values ​​in the XY directions are used as the coordinates of the moving scale substrate in the XY directions, thus obtaining the absolute displacement of the moving scale substrate. This invention uses a scanning method to obtain the absolute position in the XY directions to achieve planar two-dimensional absolute displacement measurement, which can reduce cumulative and random errors, improve measurement accuracy, and achieve high-precision measurement over a large range.