223 results about "Shaft alignment" patented technology

A powertrain of a vehicle comprising an electric motor (16) having a drive shaft (11) wherein the drive shaft is oriented preferably perpendicular to the common axis (Aw) of the wheels (18) which the powertrain is intended to drive (i.e. rotate). The drive shaft of the electric motor is mechanically connected to the axles (20, 22) of the wheels, which are aligned with the common axis, via a transmission (10) having at least one pair of mating gears (12, 14), preferably with one of the pair of mating gears being an offset pinion (14), and with the reduction ratio of the transmission being in the range of about 6 to about 15 with the pinion having 2 to 6 teeth.

The invention discloses a motor comprehensive performance testing device and testing method, and relates to the technical field of motor testing, the motor comprehensive performance testing device comprises a motor clamping assembly, a testing assembly, a lifting assembly and an electrical cabinet, the motor clamping assembly is used for clamping and fixing a testing motor, the testing assembly is used for carrying out load and torque testing on the testing motor, and the lifting assembly is used for lifting the testing motor. The lifting assembly is arranged below the testing assembly and used for adjusting the position of the testing assembly when the testing motor is connected with a load, and a processing terminal used for receiving and processing testing data and a control terminal used for controlling the motors are arranged in the electrical cabinet. An alignment camera is arranged in the testing assembly to perform center shaft alignment on the output end of the testing motor and the coupler, the height difference is compensated through the lifting assembly, so that the output shaft of the testing motor is aligned with the center shaft of the coupler, the alignment speed is increased, the load mounting module can automatically increase or reduce the load, and the load is automatically locked during rotation. Special fixing is not needed, and convenience and rapidness are achieved.

The invention discloses a key phase pulse signal synchronous acquisition and multi-axis centering analysis method, which belongs to the technical field of mechanical monitoring and diagnosis, and comprises the following steps of: configuring a synchronous acquisition system, acquiring a conditioned key phase pulse signal and a conditioned vibration signal, and extracting an axis speed and a load; constructing a time drift monitoring model to compensate the key phase pulse signal in real time, and ensuring the time synchronization precision; the compensation signal is input into a shaft centering correction model based on dynamics and finite element analysis, and radial deviation and axial deviation under the dynamic load are calculated; establishing a nonlinear tolerance threshold model by adopting a nonlinear regression model, and dynamically adjusting an allowable centering deviation threshold in combination with the real-time shaft speed and the load; through closed-loop comparison of the shaft centering deviation and a threshold value, a centering qualified conclusion or a correction suggestion is automatically output, and triggering signal resampling is supported to adapt to working condition changes; the real-time and self-adaptive analysis of the centering deviation of the multi-axis system is realized, and the operation stability and the maintenance efficiency of the rotating machinery are improved.

The present invention relates to a thrust and torque measuring device for a model test of a ship. The purpose of the present invention is to provide a self-propelled dynamometer in the prior art in which a thrush and a torque generated on a single rotating shaft connected to a propeller are measured at the same time, resulting in an interference effect occurring between the thrush and the torque, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time. A thrust bearing for rotating while transmitting thrust applied to a shaft to a force cell and a coupling for determining whether or not the alignment state between shafts is abnormal are disposed between the force cell for thrust measurement and the force cell for torque measurement. The interference amount between thrust and torque data is corrected through a data processing board, and whether the shaft alignment state is abnormal or not is judged, so that the interference amount generated when thrust and torque are measured is corrected in a data post-processing mode, and the influence caused by the interference effect is reduced to the maximum extent. Therefore, the thrust and torque measuring device for ship model testing using data post-processing can improve the accuracy and precision of simultaneous measurement of thrust and torque.

A double-motor wheel edge driving assembly comprises a gearbox and a planet row which is connected with the gearbox and drives a driving wheel to move, and is characterized in that the gearbox comprises two motors, an input assembly which couples power of the two motors, a two-gear speed change mechanism which is in coaxial butt joint with the input assembly and has a two-gear speed change function, and an output shaft which is connected with the two-gear speed change mechanism; the output shaft extends into the two-gear speed change mechanism and is coaxially aligned with the input assembly, the two motors are symmetrically arranged with the axis of the output shaft as the center, a sun gear of the planet row is fixed to the output shaft, a planet carrier is fixed to the gearbox shell, and a gear ring is supported on the periphery of the gearbox shell through a bearing and fixed to a driving wheel. According to the invention, the adaptability to complex terrains is improved, the axial size of the whole driving assembly is shortened, the problem of center-of-gravity shift is avoided, the driving structure and the driving wheel can be coaxially aligned, and the stability of the driving wheel in the running process is improved. The invention further provides a driving method of the heavy truck.

The utility model discloses a two-way output air compressor which comprises a driving machine shell, a motor shaft is fixedly connected with two eccentric wheels, each eccentric wheel is internally provided with a rolling groove, the rolling grooves are internally connected with rotating shafts in a rolling mode, through holes are fixedly connected with pressurizing pipes which are coaxially aligned with connecting rods left and right, and the directions of the two pressurizing pipes are opposite. The pressurizing pipes are slidably connected with the connecting rods, the connecting rods are fixedly connected with pistons located in the pressurizing cavities, the pistons are slidably connected with the pressurizing pipes in a sealed mode, and each pressurizing pipe is fixedly connected with a one-way air outlet valve and a one-way air inlet valve which are communicated with the corresponding pressurizing cavity. When the eccentric wheel rotates, the rotating shaft rolls along the rolling groove, so that the piston is driven to move, air enters from the one-way air inlet valve and flows out from the one-way air outlet valves to the air storage pipe, air compression is achieved, two-way output is achieved through the two one-way air outlet valves, and air compression of the air storage tank in two directions is achieved.

The utility model provides a bar processing machine tool, and belongs to the technical field of machine tools. The technical problem that an existing bar machining machine tool is single in function is solved. The bar processing machine tool comprises a rack and a material preparation seat, a shaft seat is fixed on the rack, a main shaft is rotationally connected to the shaft seat, the material preparation seat is located at one end of the feeding end of the main shaft, and a movable table capable of freely moving in the X-axis direction and the Y-axis direction is arranged at the position, located at the processing end of the main shaft, of the rack; the main shaft is a hollow pipe, pneumatic chucks are arranged at the two ends of the main shaft, and the centers of the two pneumatic chucks are located on the axis of the main shaft. A feeding table and a discharging gripper are arranged on the material preparation seat, and the feeding table and the discharging gripper can alternately move to the position aligned with the main shaft; a plurality of machining tools are sequentially fixed to the moving table in the Y-axis direction, a bolt feeding machine is further fixed to the moving table, and a bolt feeding machine is arranged on the side, located on the main shaft, of the rack. The automatic feeding and discharging device has the advantages that a plurality of bar machining procedures can be achieved at a time, and feeding and discharging can be achieved automatically.

The utility model relates to an auxiliary tool for measuring the hole distance of a semi-open bearing hole, which is characterized by comprising a lever, a front-end measuring block sleeved at the front end of the lever in a sliding manner, a rear-end measuring block coaxially positioned at the rear end of the lever, and an ejector rod assembly capable of pushing the lever to move on the front-end measuring block, wherein the ejector rod assembly is connected with the front-end measuring block and is in contact with the front end surface of the lever; and the front-end measuring block and the rear-end measuring block are respectively matched with semi-open bearing holes which are coaxially aligned on the shell, so that the lever is supported on the shell. According to the utility model, the hole pitch measurement operation process of the open-half bearing hole is standardized, the influence of manual operation is effectively reduced, errors are reduced, the measurement precision is improved, and the measurement convenience and efficiency are improved; the ejector rod assembly adjusts the distance between the front-end measuring block and the rear-end measuring block, is suitable for measuring the pitch of the semi-open bearing holes with various pitches, and is high in practicability.

The invention discloses a shaft system alignment key process identification and optimization method based on an error flow model, and the method comprises the steps: constructing an error source set in a shaft system assembly process, and building a related space coordinate system based on an assembly topological relation; establishing a nominal pose transfer equation based on an infinitesimal rigid body coordinate transformation principle; constructing a joint surface contact error vector by combining the diameter of the flange on the basis of a flange opening value and a dislocation value measured on site; performing first-order linearization processing on the nominal pose transfer equation based on the joint surface contact error vector, and obtaining a sensitivity matrix; constructing a state equation for describing error accumulation according to the sensitivity matrix and the error source set; a sensitivity coefficient is constructed based on a state equation and is compared with a judgment threshold, key control characteristics are identified, accurate errors can be predicted by quantifying a transmission mechanism of each error source, and key procedures are accurately identified in combination with the sensitivity coefficient, so that a reasonable strategy is adopted for optimization, and the product quality is ensured to be qualified.

The embodiment of the invention provides a wind power foundation anchor plate leveling device, and relates to the technical field of wind power. A wind power foundation anchor plate leveling device comprises a lifting column capable of moving in a lifting mode, telescopic cylinders are fixed to the peripheral face of the lifting column, one end of each telescopic cylinder is hollow inwards, a telescopic rod capable of moving in a telescopic mode is arranged in each telescopic cylinder, and a driving box is fixed to the end of each telescopic rod. A bearing base is fixed to the bottom face of the driving box, the peripheral face of the lifting column is sleeved with a supporting base, meanwhile, a telescopic cylinder and a telescopic rod are arranged on the peripheral face of the supporting base, the end, located on the lower portion of the peripheral face of the supporting base, of the telescopic rod is connected with the lifting box, and the telescopic rod on one side of the lifting column pushes the driving box, so that the rolling wheels abut against the inner ring wall of the anchor plate; coaxial alignment of the upper anchor plate and the lower anchor plate is realized; and the worm drives the roller to rotate continuously to drive the anchor plates to rotate until the bolt mounting holes of the upper and lower anchor plates are aligned, so that bolt mounting is facilitated.

The invention discloses a comprehensive performance test system and method for a wind power coupling transmission system, and is applied to the performance test technology, the system comprises a weighting base, a first sliding groove is formed in the weighting base, and an input shaft centering assembly and an output shaft centering assembly which have the same structure and are symmetrically distributed are slidably connected in the first sliding groove; the input shaft centering assembly and / or the output shaft centering assembly comprise / comprises a sliding base, a first lifting table and a second lifting table, wherein the first lifting table and the second lifting table are sequentially arranged on the sliding base. A bearing seat, a shaft centering adjusting bracket and a coupling support are linearly and sequentially arranged on the second lifting platform; the shaft centering adjusting support is composed of a supporting seat and an annular adjusting frame fixed to the upper end of the supporting seat, and a plurality of telescopic assemblies and CCD laser micrometer devices are annularly arranged in the annular adjusting frame. According to the invention, the installation precision of the test system can be effectively improved, multiple performance tests can be carried out according to test requirements, and the test result is more accurate.

The utility model discloses a traction sheave installation auxiliary frame for elevator installation, and relates to the technical field of elevator installation. The auxiliary mounting frame comprises a mounting base, at least two sets of bearing pulleys are arranged above the mounting base, and one set of bearing pulleys is composed of two bearing pulleys with the axes parallel to each other; the single bearing pulleys between two adjacent groups of bearing pulleys are in one-to-one correspondence and are coaxially arranged; and a driving device for driving all the bearing pulleys to move up and down is also arranged on the mounting seat. The traction wheel is directly placed on the auxiliary support, the horizontal position and the vertical position of the traction wheel and the rotating position of the rotating shaft of the traction wheel can be adjusted at any time, and the rotating shaft of the traction wheel and the power output shaft of the speed reducer can be rapidly and coaxially aligned and installed through the coupler.

The utility model belongs to the field of tunnel engineering, and particularly relates to an inner wall slicking device for tunnel construction, which comprises a construction frame, a groove is arranged in the construction frame, a rotating frame is arranged at the center of the groove, a power shaft is rotatably connected between the rotating frame and the construction frame, a motor groove is arranged on the front side of the construction frame, and a third motor is fixedly connected in the motor groove. The third motor is in power connection with the power shaft and can drive the rotating frame to rotate, the upper end face of the rotating frame is fixedly connected with a fixing pipe coaxially aligned with the threaded shaft, the second motor can drive the threaded shaft to rotate, the upper end face of the construction frame is fixedly connected with two arc frames which are symmetrical front and back, and each arc frame is internally provided with an arc groove. And an arc-shaped plate is slidably connected into the arc-shaped groove, a fixing frame is fixedly connected to the upper end face of the threaded pipe, and a mud scraping plate is rotatably connected into the fixing frame, so that the mud scraping plate can be driven by rotating the rotating frame and the threaded shaft to adjust the height and then rotate around the power shaft, and mud on the inner wall of the tunnel is scraped.

The invention discloses a method for centering a ship shafting provided with a flange connecting bolt, and the method specifically comprises the following steps: supporting the ship shafting to be centered through a temporary support, and enabling the bending and deviation of a flange to meet the design requirements; adjusting the position of the host to enable the bending and deviation of the flange to meet the design requirements; connecting bolts of a shafting flange are installed, nuts are tightened to enable the flange to be connected and fixed, the load of a bearing is measured, the measured load of the bearing is compared with a theoretical load value, when the measured load of the bearing exceeds + / -20% of the theoretical load value, alignment is not successful, a shafting alignment calculation book is restarted, and a new theoretical load value of the bearing is generated; and the shaft system bearing load is readjusted and measured without dismounting the mounted shaft system flange connecting bolts and nuts. According to the method, shafting alignment is carried out without dismounting the connecting bolts of the shafting flange, the original states of the propeller shaft and the intermediate shaft are kept, and the original state of the intermediate bearing can be kept to a large extent.

The invention discloses a precise position measurement assistive device for a durometer, and relates to the technical field of auxiliary devices for durometer measurement, the precise position measurement assistive device comprises a mounting base and a sample positioning cylinder, the bottom of the mounting base is provided with a mounting clamping groove, and the precise position measurement assistive device further comprises a measurement position positioning mechanism and a position adjusting mechanism, the measurement position positioning mechanism comprises a positioning steel needle and an adjustable lifting alignment mechanism, and the positioning steel needle is used for positioning a hardness measurement position on the test piece. The positioning steel needle slides along the guide rail through the sliding seat, the first telescopic square rod and the second telescopic square rod stretch out and draw back, the positioning steel needle can be conveniently and rapidly aligned with a measurement position marked on a test piece, and the positioning steel needle and the conical positioning guide sleeve are longitudinally and coaxially aligned, so that the conical positioning guide sleeve is synchronously aligned with the measurement position; and the detection pressure head can be conveniently and quickly inserted into the central position of the conical positioning guide sleeve by means of the guide of the inclined surface on the inner side of the conical positioning guide sleeve, so that the detection pressure head is accurately aligned with the measurement position.

The embodiment of the invention provides an adjustable wire feeding device of a spring machine, and relates to the technical field of wire feeding of spring machines. The adjustable wire feeding device of the spring machine comprises a supporting body, a feeding assembly and a driving assembly. A guide hole is formed in one end of the supporting body; a through hole is formed in the end face of the cylinder, positioning grooves are formed in the outer surface of the limiting ring at equal angles, and elastic pieces pushing the positioning balls to be clamped with the positioning grooves in the corresponding positions in a matched mode are fixed to the supporting body. The pressing roller is rotationally arranged at the upper end of the driving wheel, and a driving shaft of the gear motor is in transmission connection with the driving wheel. According to the adjustable wire feeding device of the spring machine, the through holes with different hole diameters are formed in the end face of the cylinder, spring raw materials of different types can be conveyed conveniently, when the adjustable wire feeding device is used, the through holes with the corresponding hole diameters are coaxially aligned with the guide holes by rotating the cylinder, wire feeding can be conducted, disassembly and replacement are not needed, operation is convenient and fast, and the production efficiency is improved. And the working efficiency is improved.

Milling tool (1) for face milling the end face of a pipe end, comprising one or more cutting edges (2) which extend in a cutting plane perpendicular to a designated axis of rotation (R) of the milling tool (1), wherein a guide body (3) projects from the cutting edge(s) (2) at the center of the milling tool (1) perpendicular to the cutting plane, the outer contour of which is designed such that the guide body (3) can be inserted into a cylindrical pipe with a circular cross-section of a certain diameter to be machined with the milling tool (1) and thereby aligns the milling tool (1) with respect to the pipe such that the axis of rotation (R) of the milling tool (1) coincides substantially with a central longitudinal axis of the pipe. wherein the milling tool (1) has a base body (5) for driving the cutting edges (2), which carries a cutting edge body (6) which is in particular replaceable and provides the cutting edges (2), wherein the base body (5) additionally carries the guide body (3), and wherein the base body (5) passes through the cutting body (6) and the guide body (3).

The invention relates to the technical field of aluminum plate arc rolling and flattening devices, in particular to a double-curved-surface aluminum plate arc rolling and flattening device suitable for different radians, which comprises a main support, an upper support is arranged on one side of the main support, a lower support is arranged on one side of the main support, the upper support and the lower support are coaxially aligned, an upper support is arranged below the upper support, and a lower support is arranged below the lower support. An upper roller is arranged on the inner side of the upper support, an operation assembly is arranged on the inner side of the lower support, and the operation assembly comprises a fixed threaded seat, a lead screw, a hand wheel, a connecting block, a connecting pipe, a lower support, a mounting frame and a lower roller. According to the invention, the distance between the lower roller and the upper roller is adjusted to adapt to hyperboloid aluminum plates with different thicknesses and radians; the rollers with different radians can be quickly replaced by quickly dismounting and mounting the second rotating shaft of the lower roller, so that diversified processing requirements are met; the device is compact in overall structure and easy to adjust and operate, the flattening efficiency and the surface quality of the double-curved-surface aluminum plate are remarkably improved, and the production cost is reduced.

Shaft alignment in machine tools is facilitated. The machine tool includes: a first spindle holding one end of a workpiece; a second spindle holding another end of the workpiece; a sensor detecting a physical quantity related to a vibration during synchronous rotation of the first spindle and the second spindle with the workpiece being held by the first spindle and the second spindle; and a controller performing shaft alignment between the first spindle and the second spindle based on the physical quantity.

The invention relates to an injector arrangement (100) for a gas turbine, in particular an aircraft engine, for introducing a gaseous fuel (31) and a liquid fuel (32) as well as air (30) into a combustion chamber (BK), having an injector shaft (1) and an injector main body (22) aligned along an injector longitudinal axis (L), wherein the injector main body (22) comprises: - a first gas channel (40) arranged centrally on the injector longitudinal axis (L) for introducing a gas flow into the combustion chamber (BK), - at least one air duct (5, 133, 134) arranged radially outwardly around the first gas duct (40) and - a liquid fuel injector (6) arranged radially around the first gas channel (40) for introducing the liquid fuel (32) into the combustion chamber (BK), wherein the injector arrangement (100) is additionally configured for introducing the gaseous fuel (31). Advantageous emission characteristics are obtainable in that the injector arrangement (100) is designed to assume, in particular, two alternative configurations, between which the injector arrangement (100) can be switched during operation, wherein the first gas channel (40) can be flowed through in a first configuration with air, functioning as an air injection, and in a second configuration with the gaseous fuel (31), functioning as a gaseous fuel injection.

An electromagnetic clutch is provided which includes—a selector sleeve arranged in a rotationally fixed manner on a first shaft and is adapted to be shifted linearly along the first shaft between an engaged and a disengaged state, a coupling body which is aligned coaxially to the first shaft, a stator which has a coil which serves to shift an armature ring linearly along the first shaft, the armature ring being mounted radially in an axial guide separately from the first shaft and the coupling body, wherein a shifting of the armature ring by the coil is also accompanied by a shifting of the selector sleeve. A method of closing and opening an electromagnetic clutch is also included herein.

The invention discloses a vertical shaft tunneling device with a supporting structure, and relates to the technical field of vertical shaft tunneling. In order to solve the problems that an existing device is low in tunneling efficiency, poor in supporting stability, inflexible in depth adjustment and the like, the vertical shaft tunneling device with the supporting structure comprises a tunneling assembly and further comprises a supporting assembly fixed to the upper portion of a vertical shaft, and an adjusting assembly is connected to the supporting assembly; the depth exploration assembly slidably penetrates through the center of the supporting assembly and is connected with the adjusting assembly, and the center of the supporting assembly and the center of the adjusting assembly are kept coaxially aligned; the tunneling assembly is connected to the tail end of the depth exploration assembly; the adjusting assembly is matched with the depth exploration assembly to achieve adjustment of the first depth, the second depth and the third depth of the tunneling assembly in the tunneling direction. Flexible adjustment, safety and stability of vertical shaft tunneling operation are guaranteed.

The invention provides a part positioning tool. The part positioning tool comprises a first base, an axial limiting support, a second base and a third base, the axial limiting support, the second base and the third base are sequentially installed on the first base, and a positioning support is arranged on the second base. The third base is provided with a first supporting module used for supporting a part and preventing the part from vibrating during machining, a second supporting module used for conducting self-adaptive supporting on a complex profile on the part, an equal-height alignment block used for aligning the head, provided with a shaft hole, of the part, and a pressing block used for fastening the part. The expansion shaft alignment block is arranged on the equal-height alignment block and used for converting an inner hole datum of a part shaft hole into an outer diameter datum, and the jacking tailstock is used for axially jacking and limiting a part. The axial degree of freedom of a part is jointly limited through the axial limiting support and the jacking tailstock, other degrees of freedom of the part are jointly limited through the positioning support, the supporting module and the pressing block, and the clamping device can be applied to effective clamping and positioning of cylindrical parts with complex structures.

This utility model's electric mining truck gearbox features a three-speed design that allows selection of the most suitable gear based on different working conditions, optimizing power output to meet the power requirements of mining trucks, increasing the coverage of the motor's high-efficiency zone, improving the overall efficiency of the gearbox, and effectively reducing energy consumption. Based on the powerful performance provided by the multi-motor configuration, it enhances the flexibility and efficiency of the drive system. The front intermediate shaft assembly is coaxially connected to the output end of the power coupling assembly, and the rear intermediate shaft extends into the front intermediate shaft assembly and is coaxially aligned with the output end of the power coupling assembly, forming a compact parallel shaft structure. This fully utilizes the radial space of the gearbox and reduces its axial dimensions, thereby reducing the gearbox's volume and facilitating overall vehicle layout. Furthermore, the front and rear intermediate shaft assemblies share the radial and axial loads during transmission, reducing gear stress and improving the transmission stability and reliability under harsh working conditions, thus enhancing the gearbox's adaptability to various operating conditions.

The utility model relates to a concentricity adjusting bracket for a speed reducer and a motor of a cooling tower fan, and belongs to the technical field of long shaft alignment auxiliary tools. According to the technical scheme, the device comprises two sets of brackets which are arranged at the two ends of an intermediate shaft of a speed reducer and a motor and are of the same structure, each set of brackets comprises an upper bracket (2), a lower bracket (3) and a jack (4), the upper brackets (2) are matched with the intermediate shaft, the upper brackets (2) are arranged on the jacks (4), and the jacks (4) are fixed to the lower brackets (3); the upper bracket (2) is in an arc shape matched with an intermediate shaft; the lower bracket (3) is of an integrated structure composed of a middle stand column and flat plates at the upper end and the lower end. And the cross section of the middle upright post of the lower bracket (3) is smaller than the flat plates at the upper and lower ends. The utility model has the beneficial effects that the concentricity accuracy and operability of the speed reducer and the motor intermediate shaft can be improved, the operation is convenient, the working efficiency is high, and the labor intensity can be reduced.

The utility model relates to the technical field of bearing installation, in particular to a bearing installation device for water pump machining, which comprises a base and an installation assembly, and the installation assembly comprises a support, a sliding rail, a sliding block, an installation plate, a bearing mold, a first air cylinder, a second air cylinder and a three-jaw clamp. A bearing mold of a bearing needing to be installed is installed on the installation plate, then a shaft of a water pump is clamped and fixed to the device through the three-jaw clamp, the three-jaw clamp is controlled to ascend and descend through the second air cylinder, and therefore the shaft of the water pump is aligned with the bearing installed on the bearing mold, and the first air cylinder pushes the bearing mold to move at a constant speed. In the process of moving the bearing mold, the sliding block slides on the sliding rail, bearing molds of different models can be detached for replacement and installation when bearings of different models are installed, and the problems that in the using process of an existing device, bearing installation cannot be conducted according to main shafts of different models, devices need to be customized, and installation is not convenient are solved. And the function of the device is single.

The invention discloses a welding positioning and sealing optimization method for a welding sealing nut in the technical field of nut welding, which comprises a base and a vertical rod in threaded connection with the middle axis of the upper part of the base, and further comprises three groups of T-shaped chutes annularly formed in the upper part of the base at equal intervals, and positioning pins for clamping sheet metal parts are slidably connected in the three groups of T-shaped chutes; and a guide area for guiding the sealing nut is arranged at the end part of the positioning pin. Through the collaborative design of the arc-shaped guiding area at the end of the positioning pin and the elastic abutting mechanism of the spring, the problem that an existing fixing shaft pin cannot compensate for the coaxiality deviation of a metal plate hole and a sealing nut is solved, the radius of the inclined face of the guiding area is precisely matched with the inner diameter of the sealing nut, tiny coaxiality deviation can be forcibly corrected, and the machining precision is improved. And in cooperation with the continuous elastic clamping force of the spring, it is ensured that the sealing nut and the metal plate hole are coaxially aligned, dislocation of the sealing ring is avoided, completeness of the sealing contact face is guaranteed, formation of a leakage channel is avoided, and the sealing reliability is remarkably improved.

The utility model relates to the field of crankshaft machining, in particular to a crankshaft outer surface strengthening treatment device. According to the crankshaft outer surface strengthening treatment device, the eccentricity can be adjusted according to the eccentric shaft neck on the crankshaft, rotation with the eccentric shaft neck as the circle center is facilitated, and the more uniform and consistent surface treatment effect is achieved. A crankshaft outer surface strengthening treatment device comprises a bottom plate, a movable support and the like, and the left portion of the bottom plate is connected with the movable support in a sliding mode. The first electric push rod is started to drive the eccentric disc to move forwards or backwards, so that the eccentric shaft neck, close to the outer side, on the crankshaft is aligned with the telescopic shaft, then the first motor drives the crankshaft to rotate, the crankshaft rotates with the eccentric shaft neck as the circle center, and the eccentricity can be adjusted according to the eccentric shaft neck on the crankshaft; and rotation with the eccentric shaft neck as the circle center is facilitated, and the more uniform and consistent surface treatment effect is achieved.

The present application relates to the field of processing measurement technology, and more particularly to a kind of automatic measurement method and system for engine box class part machining aperture.The method includes the following steps: obtaining original aperture image;Using local gradient sliding window to locate initial edge point set, determining the tilt angle of viewing axis and the deflection azimuth angle of major axis based on fitting method, to realize the independent separation of the two;Using the deflection azimuth angle of major axis to construct rotation relationship to obtain spindle alignment point set;Using the tilt angle of viewing axis to carry out projection transformation to obtain orthogonal projection point set;Based on the tilt angle of viewing axis, determine the local object distance drift of each edge pixel point, and then determine the non-uniform magnification correction gain, carry out numerical compensation restoration on orthogonal projection point set, to obtain the final machining aperture size;Output compensation signal to drive machine tool compensation actuator to adjust tool offset value.The present application solves the non-uniform magnification distortion problem caused by probe rod droop, and realizes the true value restoration of space light field.

An absorbing dynamometer system enables testing and alignment of electric motors. In one example, the system includes a dynamometer test stand with a front plate and a fixture plate that supports an electric motor, with their major faces in contact. A carriage mounted to the front plate carries an edge surface of the fixture plate and allows vertical and horizontal movement relative to the front plate. Alignment can be achieved using fixture clamps with spring-loaded ball units that press the fixture plate against the front plate. A first actuator moves a wedge within the carriage, enabling vertical adjustment, while a second actuator facilitates horizontal adjustment.