33results about How to "Reduce eccentricity error" patented technology

The embodiment of the invention discloses a method for reducing drive eccentric errors of a harmonic gear and an automatic aligning wave generator. The automatic aligning wave generator comprises a turn plate driven by an input shaft and an elastic floating mechanism provided with two rollers. The elastic floating mechanism is flexibly arranged inside the turn plate in a sliding manner in the long axis direction of the automatic aligning wave generator. The elastic floating mechanism comprises two roller brackets symmetrically distributed relatively to the centre of the turn plate and an elastic element arranged between the roller brackets; the elastic element elastically resists against the two roller brackets, and the two rollers are respectively arranged on the two roller brackets, elastically resist against an inner circle of a flexible gear under the action of the elastic element and force the flexible gear to form an ellipse from a round shape, so that gear teeth of the flexible gear are tightly meshed with gear teeth of a rigid gear. The automatic aligning wave generator can reduce the eccentric errors caused by processing and assembling of parts, can remove the gear backlash between the gear teeth of the flexible gear and the gear teeth of the rigid gear and play an overload protection role.

The present invention discloses a space curve type long-distance microfine pipe internal surface form measurement instrument and its detection method. Said pipe internal surface form measurement instrument is formed from the components of 2-D position sensor, semiconductor laser, transparent window, micromotor, scanning lens, reflector, convergent lens and receiving lens group, etc. Said measurement instrument is applicable to defect detection and 3-D measurement of curve type microfine pipe internal wall whose inner diameter is 9-11 mm and curvature radius is greater than 100 mm, and its measuring accuracy can be up to plus or minus 0.1 mm.

The invention discloses a helical hole milling-dimpling-rounding integrated tool. The helical hole milling-dimpling-rounding integrated tool comprises a tool body composed of a tool handle and a cutting part. The cutting part comprises a helical hole milling cutting edge part, a helical hole milling cutting neck part, a rounding cutting edge part and a dimpling cutting edge part which are arranged sequentially from front to back. The dimpling cutting edge part is connected with the tool handle. The helical hole milling cutting edge part comprises three helical hole milling cutting edges arranged in the peripheral direction of the tool body. The rounding cutting edge part comprises three rounding cutting edges arranged in the peripheral direction of the tool body. The dimpling cutting edge part comprises three dimpling cutting edges arranged in the peripheral direction of the tool body. The edge parts of the three rounding cutting edges are located in the non-slotted position of the helical hole milling cutting neck part. The front ends of the rounding cutting edges are all tangential to the outer diameter of the helical hole milling cutting neck part, and the rear end of each rounding cutting edge is tangential to the front end of the correspondingly arranged dimpling cutting edge. The three rounding cutting edges and the helical hole milling cutting edge part are arranged in a staggered mode. The machining precision is improved by adopting the helical hole milling-dimpling-rounding integrated tool.

The invention discloses a device and method for measuring the outer diameter of a thin-walled bearing ring. The device includes a support frame, a workbench arranged on the support frame, a positioning mechanism, a measurement mechanism and a counter-arriving mechanism arranged on the workbench; A measuring center is set on the workbench, and the positioning mechanism includes a Y-axis positioning mechanism and an X-axis positioning mechanism arranged on the workbench; the measuring mechanism includes a torsion spring comparator slidingly arranged on the workbench and a The spring comparator moves along the Y-axis direction on the working table; Anti-resistance adjustment mechanism for the anti-resistance rod to move along the Y-axis guide groove. When the device uses a torsion spring comparator to measure the bearing ring, it can reduce the force measurement error and eccentricity error existing in the measurement of the thin-walled bearing ring, thereby improving the measurement accuracy of the outer diameter of the thin-walled bearing ring.

The invention discloses a method for checking the surface condition of spatial curvature long-distance micro tube. The inventive machine is mainly formed by a two-dimension position sensor, a semi-conductor laser, a transparent window, a micro motor, a scanning mirror, a reflector, a convergent lens, and a receiving lens. The light of laser via two reflections will form a micro spot on the inner wall of tube, while said spot is received by the two-dimension position sensor. Via the current signal of two-dimension position sensor and the structural parameters of inventive machine, the invention calculates out the position of the spot in local three-dimension coordinate. The micro motor rotates the scanning mirror one round to obtain the positions of all sampling points of one section of inner wall of tube. The invention can be used in the defect check and three-dimension measurement of the inner wall of the curvature micro tube whose inner diameter is 9-11mm and radius is larger than 100mm, while the measurement accuracy can reach +- 0.1mm.

The invention relates to a ship shafting torque measuring probe in an eccentric error correcting mode. The ship shafting torque measuring probe in the eccentric error correcting mode is mainly composed of a photoelectric receiving module (4), an eddy current displacement sensor (5), a photoelectric diode (3), a semiconductor laser (2), a laser clamping block (1) and a middle block (6), wherein the laser clamping block (1) and the middle block (6) are arranged on a base (7). The laser clamping block (1) is provided with through holes which are used for containing and fixing the semiconductor laser (2), and the photoelectric receiving module (4) is fixed to the middle block (6) and serves as an upholder of the photoelectric diode (3). The middle block (6) is used for clamping a connecting leading wire of the eddy current displacement sensor (5) and the photoelectric diode (3). According to the ship shafting torque measuring probe in the eccentric error correcting mode, an optimization design is adopted overall, space is saved, and the torsion phase angle deviation caused by code disc eccentric errors is eliminated. Meanwhile, the invention further provides two methods for obtaining an initial phase angle.

The present invention provides an electronic current transformer with double air gap iron core. The electronic current transformer with double air gap iron core includes: a first double air gap iron core, on which a second An air gap and a second air gap, the connecting line between the first air gap and the second air gap passes through the center of the first double-gap iron core; the second double-gap iron core is connected to the first The double-gap iron cores are connected in series and arranged coaxially, the third air gap and the fourth air gap are set on the second double-gap iron core, and the connecting line between the third air gap and the fourth air gap passes through the The center of circle of the second double-gap iron core, and perpendicular to the connecting line between the first air gap and the second air gap; the conductor passes through the first double-gap iron core and the second double-air gap in turn The center of the gap iron core; the data processing chip is connected to the coils of the first double-air-gap iron core and the second double-air-gap iron core for receiving measurement data and performing analog-to-digital conversion on the measurement data displayed and output.

The invention provides a method for assembling a circular grating, comprising: arranging the circular grating on the grating rotation axis so that the circular grating can rotate relative to the base with the axis of the grating rotation axis as the rotation center; capturing and presenting a grating image having grating lines, adjusting the relative position of the circular grating to the axis of rotation of the grating so that an edge on one side of the grating image is moved within the dynamic range of the side edge; capturing an image of the circular grating in at least two positions The grating line image is converted into a first electrical signal and a second electrical signal, the eccentricity error of the circular grating is obtained based on the first electrical signal and the second electrical signal, and it is determined whether the eccentricity error is less than a preset threshold; and the installation step, if the eccentricity error If it is less than the preset threshold, the relative position of the circular grating and the grating rotation axis is fixed. In this case, the relative position of the circular grating and the grating rotation axis can be adjusted based on the difference between the circle center of the circular grating and the axis of the grating rotation axis.

The utility model relates to a fast-clamping and self-aligning grinding wheel flange for a precision grinding machine, which relates to the field of precision grinding. Equipped with machine tool spindle, grinding wheel fixing nut, grinding wheel, self-aligning wrench, jaws, back end of centering device back cover, small bevel gear, front end of centering device back cover, centering device front cover, ball cover, bearing, large cone Gears and balls; first, install the statically balanced grinding wheel flange into the taper front end of the machine tool spindle, and pre-tighten it with the grinding wheel fixing nut, then insert the self-aligning wrench into the self-aligning hole of the flange, and the self-aligning wrench passes through the small bevel gear and The gear transmission of the large bevel gear drives the large bevel gear to rotate. At the same time, the feed movement of the claw is realized through the rack transmission between the plane thread on the large bevel gear and the claw. The claw that moves in three directions at the same time grasps the machine tool spindle to solve The problem of eccentricity between the center of the grinding wheel and the axis of the machine tool spindle is solved. The structure is simple, economical and reliable, and the clamping of the grinding wheel is realized; the eccentricity error in the assembly of the grinding wheel is effectively overcome.