424 results about "Radial deformation" patented technology

The invention belongs to the technical field of radial forging machine control, and particularly relates to a high-precision radial forging machine control system and a control method thereof.The method comprises the steps that a technological parameter database is established, dynamic parameters in the forging process are synchronously collected through a multi-source heterogeneous sensor, and workpiece surface temperature field distribution is obtained through an infrared thermal imager; measuring radial deformation through a laser displacement sensor group, and capturing internal defect characteristics of the material by using an acoustic emission sensor; the optimal forging frequency is calculated according to real-time material rheological characteristics, and a model predictive control algorithm is adopted to generate hammerhead motion trail correction; dynamic compensation control is implemented, and the back pressure of the hydraulic system is adjusted through strain rate feedback; and closed-loop quality evaluation is executed, online metallographic analysis is carried out in the forging intermittent period, process parameters are reversely corrected according to the grain size detection result, the fatigue life of the workpiece is predicted based on a digital twin model, and the effects that the whole forging process is dynamically controlled in real time, errors and deviation are effectively eliminated, and the forging precision is improved are achieved.

The invention provides a cold-state blade tip gap design method which comprises the following steps: S1, establishing a blade thermal-state design model and a flow field grid, and enabling the blade thermal-state design model to have an equal blade tip gap structure; s2, converting the blade thermal state design model into a cold state blade initial model; s3, calculating the thermal-state radial deformation of the blade tip by using a computational fluid mechanics method; and S4, subtracting the blade tip thermal-state radial deformation from the blade tip height of the blade thermal-state design model to obtain a cold-state blade correction model. According to the method, the local height and the surface shape of the blade tip of the turbine movable blade in the cold state are obtained through reverse deduction by calculating the local deformation of the blade in the main working state of the turbine movable blade, and therefore it is guaranteed that the blade tip gap is uniform in the working state of the movable blade.

The invention relates to the technical field of deformation detection, in particular to a method for measuring the deformation of a rotary body part, which comprises the following steps of: arranging measuring points on a target rotary body part, and performing dotting measurement by using a three-coordinate measuring instrument to obtain dotting data which are three-dimensional coordinates; based on the dotting data, calculation is carried out, and deformation information of the target rotary body part is obtained, the calculation comprises the steps of determining a data source, normalizing coordinates, converting a coordinate form, sequencing path measuring points, compensating a measuring head, calculating a position-error function, calculating all-directional axial deformation and radial deformation, speculating all-position deformation, and performing any combination calculation in multi-coordinate system data integration. According to the invention, the deformation of the rotary part can be measured conveniently, quickly and efficiently.

The invention provides a method for calculating the air gap change of a single-rope winding type permanent magnet outer rotor elevator under a variable load effect. The method comprises the following steps: establishing a rotor roller mechanical model of the single-rope winding type permanent magnet outer rotor elevator under variable-speed and variable-load conditions; the resultant force borne by the roller is solved when the common influence of the external steel wire rope positive pressure and the internal radial electromagnetic force is considered; calculating the air gap change induced by the radial deformation of the rotor roller in the winding process of the steel wire rope; establishing a stator core mechanical model, and calculating the air gap change induced by the radial deformation of the stator; calculating an air gap comprehensive variable quantity caused by the common bearing load of the rotor roller and the stator iron core; according to the method, the real-time air gap comprehensive variable quantity of different types of single-rope winding type permanent magnet outer rotor hoists in the variable-speed working condition operation process can be accurately and rapidly calculated according to parameters such as the load size, the diameter and the width of a roller, the number of permanent magnet poles and the number of stator grooves.

The invention discloses a biaxial test device, comprising: a bracket, a container, a sample setting assembly and a press, etc. Before use, the sample is installed between two limit plates. On the basis of applying confining pressure, the press is started, and the pressure rod moves vertically downward and applies a vertical downward load to the sample. When the sample is subjected to the vertical downward load, axial compression and radial deformation will occur. At this time, the radial deformation of the sample on both sides of the limit plates is limited, and expansion occurs on both sides without the limit plates. Subsequently, under the joint action of the confining pressure and the limit plates, the sample undergoes plane strain. Since the container and the limit plates are both in a transparent state, the side section state of the sample when plane strain occurs can be well observed. At the same time, the multiphase mixed fluid in the mixing container penetrates into the rock sample inside the sample and flows out through an output pipeline and is tested and analyzed by external equipment, so that the potential influence of multiphase seepage on the mechanical behavior of rock mass can be studied under plane strain conditions.

The invention discloses an inclined liquid rocket engine thrust frame with a composite constraint structure, and solves the problems that the existing inclined thrust frame only adopts a flexible spring plate supporting structure as a constraint limiting mode, or only adopts a radial deformation adjustable constraint device to reinforce the middle section of a movable frame to resist the radial deformation of the middle section of the movable frame, so that the thrust frame is difficult to deform. The stability of a movable frame and a thrust axis cannot be ensured when a large-thrust engine is tested, and the thrust measurement precision is influenced; comprising a fixed frame and a movable frame, the fixed frame is obliquely installed and fully surrounds a frame structure, the movable frame is of a two-section frustum structure, the movable frame is installed in the fixed frame through a composite restraining structure, and the composite restraining structure comprises a front-section restraining device, a middle-section restraining device and a rear-section restraining device; the front section restraint device comprises a limiting rod, a front restraint limiting roller and a front spring plate; the middle section restraining and limiting device comprises a flexible connection supporting assembly and a belleville spring supporting assembly; and the rear section restraint device comprises a rear restraint limiting roller and a rear spring plate.

The invention relates to the technical field of numerical control machine tool machining, and discloses a dynamic optimization method for metal joint machining parameters of a numerical control machine tool. The method comprises the following steps: acquiring initial characteristic data of a metal joint blank in a numerical control machine tool processing area in real time, wherein the initial characteristic data comprises surface topology distribution data, material hardness gradient data and thermal expansion coefficient data; according to the stage identification code of the current machining procedure, a dynamic constraint rule set bound with the stage identification code is called, and the dynamic constraint rule set comprises an axial cutting force threshold value, a radial deformation tolerance range and a temperature drift compensation coefficient; and finally, based on the initial feature data and the dynamic constraint rule set, an initial machining parameter vector corresponding to a multi-objective optimization function is generated, and the initial machining parameter vector comprises a main shaft rotating speed reference value, a feeding rate weighting factor and a cooling liquid flow proportionality coefficient.

The metal sealing sleeve comprises a metal sleeve part and a metal limiting part, an annular convex part continuously fluctuating in the axial direction is formed on the pipe wall of the metal sleeve part, and the part, protruding out of the pipe wall, of the annular convex part is of a hollow structure; and the metal limiting part radially and outwards extends from one end of the metal sleeve part to the maximum diameter which partially exceeds the annular convex part. By means of good rigidity and plasticity of metal, it is guaranteed that the metal sealing sleeve has high compression resistance, and meanwhile based on the plasticity of the metal, the part, protruding out of the pipe wall, of the annular protruding part is designed to be of a hollow structure, so that when the metal sleeve is plugged into a sealing pipe hole, the annular protruding part is subjected to axial extrusion force, and radial deformation occurs in the sealing pipe hole; and therefore, the annular convex parts which continuously fluctuate in the axial direction jointly form an axial sealing section in the sealing pipe hole, and the sealing effect of the metal sealing sleeve is enhanced.

The invention belongs to the technical field of power system faults, and discloses a turn-to-turn short circuit fault deduction method, system, equipment and medium, and the turn-to-turn short circuit fault deduction method comprises the steps: determining the critical strain value of the fracture of an insulating material based on the axial and radial tensile test data of a winding, and building a mechanical characteristic database of the dependent variable and the insulation fracture; establishing a Poisson boundary value equation set according to the magnetic vector potential and the current density, solving to obtain the magnetic induction intensity, establishing a circuit equation in a short circuit state based on the primary side voltage of the winding, and analyzing the linear relation between the deformation state of the winding and the electromagnetic load to obtain the maximum axial and radial deformation quantity of the winding; and based on the mechanical characteristic database, the turn-to-turn insulation state and the turn-to-turn short circuit condition are judged by combining the axial and radial maximum deformation quantity of the winding. According to the method, when the winding deformation is small, the occurrence condition of the turn-to-turn short circuit fault can be accurately deduced.

The utility model discloses an internal locking mechanism and a telescopic rod, the internal locking mechanism comprises a screw rod assembly, a wedge-shaped forcing block and a locking assembly, the screw rod assembly is configured to be connected with an inner rod, and the screw rod assembly comprises a screw rod part; the wedge-shaped forcing block is connected with the screw rod assembly; the locking assembly comprises a threaded sleeve and a locking sleeve, the locking sleeve is connected with the threaded sleeve, at least part of the locking sleeve is arranged on the periphery of the wedge-shaped forcing block in a sleeving mode, and the threaded sleeve is in threaded fit with the screw rod part and used for converting rotation of the screw rod part into axial movement along the inner locking mechanism and driving the wedge-shaped forcing block to drive the locking sleeve to deform in the radial direction of the inner locking mechanism so as to lock and unlock the outer rod. According to the internal locking mechanism of the telescopic rod, stable locking of the inner rod and the outer rod of the telescopic rod can be achieved, and the structure of the internal locking mechanism is simplified.

The invention relates to a supporting and fixing structure of a long-furnace-tube reactor, belongs to the technical field of waste resource recycling, and solves the problem that a long-furnace-tube reactor in the prior art is prone to permanent deformation in the axial direction and the radial direction. A supporting and fixing structure of a long-furnace-tube reactor comprises a supporting frame arranged outside a furnace tube of the long-furnace-tube reactor in a sleeving mode, one end of the furnace tube is fixedly connected with the supporting frame, and the other end of the furnace tube is a free end capable of axially sliding; the supporting and fixing structure further comprises a sliding supporting unit arranged on the supporting frame on the lower side of the free end of the furnace tube and a sliding hanging unit arranged in the middle of the furnace tube. The sliding supporting unit is of a bearing structure capable of sliding in the axial direction and allows the furnace tube to generate axial displacement when the furnace tube is heated and expanded. And the sliding hanging unit allows the furnace tube to generate axial and radial composite displacement when the furnace tube is heated and expanded. And furnace tube deformation under the high-temperature working condition is avoided.

The invention discloses a casing thermal deformation test device and a transient deformation simulation method, and the device comprises a test bench which is used for supporting and positioning a casing; the thermal environment simulation mechanism comprises an inner heating piece used for heating the inner surface of the casing and an outer heating piece used for heating the outer surface of the casing, and the heating temperature of the inner heating piece and the heating temperature of the outer heating piece are independently controlled so as to simulate the inner surface heating process and the outer surface heating process of the casing in actual work respectively; the cooling gas simulation mechanism is mounted on the test bed, is used for communicating with the inner cavity of the casing and is used for introducing cooling gas into the casing to simulate the heat transfer process of the cold air side of the casing in the actual working process; the measuring mechanism is used for monitoring the temperature of the inner and outer surfaces of the casing and measuring the thermal deformation of the casing. According to the invention, the simulation of the radial transient deformation process of the case in the working envelope of the aero-engine can be realized under laboratory conditions, the radial deformation of the case in different states can be accurately obtained, and the measurement precision of the thermal deformation of the case is improved.

The embodiment of the invention discloses a multi-sensor monitoring and compensating method for machining deformation of a large annular part. According to the embodiment of the invention, the feed-forward compensation amount can be generated on the basis of the predicted radial deformation amount of the stress abrupt change area in the surface radial deformation appearing time when the large annular part is machined, and then the feedback compensation amount is generated according to the deviation between the expected machining contour and the actual radial position data of the large annular part; and generating a total compensation amount according to the feedback compensation amount and the feed-forward compensation amount, and adjusting the motion trail of a cutter on the machine tool according to the total compensation amount, and the expected machining contour, the shape tolerance and the position tolerance of the large annular piece. Therefore, according to the embodiment of the invention, deformation caused by stress release can be compensated in real time in the machining process of the large annular part, and the compensation efficiency is improved.

The invention relates to a strain wave gear mechanism comprising: a wave generator which is rotatably mounted relative to a flexspline about an axis of rotation; and a gear which meshes with the flexspline. The problem is solved by a strain wave gear mechanism which is characterised by: at least one deformation measurement sensor which measures a deformation, in particular a radial deformation, of the gear and / or of a transmission component which is connected to the gear or to the flexspline, said deformation being caused by the shape of the wave generator; and an evaluation device which receives measurement signals from the at least one deformation measurement sensor and, on the basis of the measurement signals, determines the rotational position and / or the rotational speed and / or the direction of rotation of the wave generator and / or of a transmission element rotating in accordance with the reduction ratio of the strain wave gear mechanism, in particular of the flexspline, in particular relative to the gear or relative to the flexspline.

To reduce deformation of a stator in an upper-lower direction. A vacuum pump includes a rotor housed in a housing and rotationally driven, plural stages of rotor blades provided in the rotor, and plural stages of stators, each of which is disposed between adjacent ones of the plural stages of rotor blades. The stator has an inner peripheral rib, an outer peripheral rib, and a stator blade connecting the inner peripheral rib and the outer peripheral rib, and is housed in the housing in a state of the outer peripheral rib being sandwiched between spacers. At least part of the outer peripheral rib of the stator is provided with a deformable portion configured to allow deformation of the inner peripheral rib and / or the stator blade in a radial direction.

The invention discloses a rotor blade tip gap design method based on cold and hot state transformation and an aero-engine. The design method comprises the steps that the design working condition of cold and hot state transformation of a fan rotor is determined; performing pneumatic calculation on fan components; designing the structure of the hot-state blade S1; reversely solving the hot-state blade S1 to obtain a cold-state blade S2; designing a cold-state blade structure; performing forward solution on the cold-state blade to obtain a hot-state blade S3; forward solving is carried out on the fan rotor cold-state blade S2 to obtain a corresponding hot-state blade S3; performing error analysis on the thermal-state blade S3 and the thermal-state blade S1; blade tip models of the cold-state blade S2 and the hot-state blade S1 are compared and analyzed, and the front edge radial deformation delta q and the tail edge radial deformation delta h of the fan rotor are obtained; and according to the designed thermal state gap value delta r, the front edge gap Sq and the tail edge gap Sh of the blade tip of the fan rotor blade are obtained.

The invention discloses a casing centralizer with a pipe diameter adjusting function, and relates to the technical field of petroleum and natural gas drilling engineering equipment, the casing centralizer comprises two fixing rings which are symmetrically distributed left and right, the outer surface of each fixing ring is provided with a plurality of fixing seats at equal intervals in the circumferential direction, and each fixing seat is rotatably connected with a connecting plate; an elastic plate is arranged between the left connecting plate and the right connecting plate in the horizontal direction, and the two ends of each elastic plate are rotationally connected with the two adjacent connecting plates respectively. By rotating the adjusting bolt, the driving screw rod and the fixing pipe are in threaded transmission, and the distance between the two fixing rings is accurately controlled, so that the annular supporting frame formed by the connecting plate and the elastic plate generates controllable radial deformation; stepless adjustment of the supporting outer diameter is achieved, different borehole sizes are accurately matched, the problem that a centralizer with a fixed size is insufficient in supporting or difficult to descend is solved, it is ensured that a casing pipe is efficiently centered, and a foundation is laid for forming a uniform cement sheath.

The invention relates to a coaxial connector (10) for connection with a mating connector and for connecting a coaxial cable (11), wherein the coaxial connector (10) has a connector unit (20) and a cable receiving unit (90), wherein the connector unit (20) has a connector insulating housing (60) through which a connector inner conductor (70) extends and which is surrounded by a connector outer conductor housing (40), wherein the cable receiving unit (90) has a cable receiving (100) and a slotted sleeve element (130), and wherein a cable receiving area (120) and a sleeve element receiving area (110) are arranged in the cable receiving (100).For a secure, PIM-stable contact between the coaxial cable outer conductor (14) and the coaxial connector outer conductor housing (40), it is proposed that the sleeve element (130) has a radially outwardly projecting deformation element (139), wherein a radially inwardly projecting deformation block (115) is arranged in the sleeve element receiving area (110), which, when assembled with the sleeve element (130), is axially spaced from the deformation element (139). Inserting the sleeve element (130) into the sleeve element receiving area (110) of the cable receptacle (100) causes a radial deformation of the sleeve element (130) from a position (K1) releasing the coaxial cable outer conductor (14) to a position (K2) contacting the coaxial cable outer conductor (14).

The invention discloses a power turbine rotor structure design method, which belongs to the technical field of aero-engines, and comprises the following steps: arranging an oil film damper according to strain energy distribution and vibration mode; performing structure optimization on the power turbine rotor according to the radial deformation condition of the connection interface; designing the sectional wall thickness of the power turbine shaft; a balance boss is arranged on the outer wall of the maximum displacement position in each order of vibration mode power turbine shaft; and the gap between the central pull rod of the power turbine rotor and the power turbine disc is designed according to the maximum vibration displacement of the power turbine disc. According to the invention, the oil film dampers are arranged at reasonable positions, so that the rotor has good vibration reduction; connection interface deformation coordination calculation is carried out, a connection structure is optimized, and the connection interface is not damaged under long-term work; and designing and optimizing the segmented shaft wall thickness, optimizing and designing the critical rotating speed margin, considering the influence of the limit unbalance on the gap, and realizing a good dynamic balance characteristic.

The invention relates to a device and a method for measuring radial strain and micro-deformation of pyrolysis of oil-rich coal. The device comprises a pressure chamber, and a pressure chamber inner cylinder is arranged in an inner cavity of the pressure chamber; a gas confining pressure chamber is formed between the outer wall of the pressure chamber inner cylinder and the inner wall of the pressure chamber; the annular heating sleeve sleeves the outer side of the pressure chamber; the displacement measuring structures are arranged on one side of the annular heating sleeve, and each displacement measuring structure corresponds to one protruding structure and is connected with the corresponding protruding structure; the stress applying structure is arranged at the lower end of the other side of the annular heating sleeve and is communicated with the gas confining pressure chamber; the temperature sensor is communicated with the gas confining pressure chamber; and the axial load loading mechanism is positioned above the pressure chamber. The radial strain capacity of the coal rock can be conveniently measured under the conditions of high temperature and triaxial stress loading, meanwhile, the radial micro-deformation of the coal rock is monitored, and the problem that the radial deformation is difficult to measure in the stress loading process of the coal rock under the high temperature condition is solved.

In a method for mechanically interconnecting a plurality of concentrically-nested tubular workpieces, a crimping tool applies an increasing radially-inward (or radially-outward) circumferential crimping force to an axial interval of a primary workpiece causing local radial plastic deformation of both the primary workpiece and a secondary workpiece nested within (or surrounding) the primary workpiece, inducing permanent local radial deformation of both workpieces to create an interference fit. The elastic strain limit of the primary workpiece material is less than that of the secondary workpiece material. The crimping tool continuously measures crimping force and crimping deformation at user-selected measurement times. The crimping tool automatically stops and releases the workpieces when the radial deformation reaches a user-selected target deformation occurring subsequent to the initiation of plastic deformation of the secondary workpiece, which the crimping tool automatically detects based on automatically-calculated indicative relationships between the continuously-measured crimping forces and crimping deformations.

The invention relates to a flywheel shafting structure and a preparation method thereof.The flywheel shafting structure comprises a shafting support, a flywheel rotor and a hub, one end of the hub is connected with the shafting support, the flywheel rotor is arranged at the other end of the hub, and the flywheel rotor is used for storing and releasing energy; the hub comprises a metal layer, a spiral layer and an annular layer, the metal layer is arranged outside the shafting support, the spiral layer is arranged on the outer side of the metal layer, and the annular layer is arranged at the end, connected with the shafting support, of the spiral layer. The flywheel rotor comprises a transition layer and a reinforcing layer, one end of the transition layer is connected with the spiral layer, and the other end of the transition layer is provided with the reinforcing layer. Compared with the prior art, the flywheel shaft system structure is manufactured by co-molding the composite material flywheel rotor and the hub, an integrated machining mode containing the composite material hub is provided based on winding molding, and the overall rigidity of the shaft system is improved and radial deformation is improved by implementing a spiral and annular alternate winding method on a metal layer.

The invention discloses an underground diaphragm wall annular rigidity calculation method and system, electronic equipment and a storage medium, and the method comprises the steps: S100, collecting a design scheme and related parameters of a circular underground diaphragm wall structure, enabling the space annular effect of a circular underground diaphragm wall to be equivalent to a distribution spring which deforms under stress along the radial direction, and calculating the annular rigidity of the circular underground diaphragm wall according to the coordination of annular deformation and radial deformation; obtaining an equivalent distribution elastic support coefficient of the circular wall circumferential effect; s200, according to the distribution condition of groove section concrete and joint mud cakes in the underground diaphragm wall structure, the annular rigidity reduction coefficient is determined; s300, describing the nonlinear compression characteristics of the joint mud cake, and determining the initial stress-strain state of the concrete and the mud cake of the diaphragm wall before excavation; and S400, a transcendental equation is established according to the stress-strain relation between the concrete and the mud cake, and the equivalent elastic modulus and the circumferential rigidity reduction coefficient of the diaphragm wall are solved. By considering the nonlinear compression characteristic of the joint mud cake, the rule that the circumferential rigidity of the diaphragm wall is increased along with the increase of deformation is described more accurately.

The invention relates to the technical field of planet wheel single-station forging, in particular to a planet wheel single-station forging forming method and device.The method comprises the steps that whether radial deformation of an upset blank is uniform or not is determined based on a radial deformation characterization value, and under the condition that it is determined that the radial deformation of the upset blank is not uniform, the upset blank is subjected to single-station forging forming; determining the total pressure of the adjusting punch or the descending speed of the adjusting punch based on the expansion rate; whether the axial deformation of the upset blank is uniform or not is determined based on the second axial deformation characterization value, and under the condition that it is determined that the axial deformation is not uniform, the pressure maintaining duration of the last stage is adjusted based on the axial deformation difference value, and a punched blank is obtained; optimizing a pressure regulation coefficient or a speed regulation coefficient according to the batch fluctuation value of the defect characterization parameter; the device comprises a mechanical arm, a punching mechanism, a data acquisition module and a punching control module. The machining quality of the single station of the planet gear is improved.

The invention provides a flexible gear structure capable of reducing assembly stress of a hat-shaped flexible gear and a harmonic reducer, and relates to the field of harmonic reducer structures, the flexible gear structure comprises a flexible gear base, and the flexible gear base is provided with a plurality of round-head cylindrical long-strip grooves in the radial direction of an inner hole; the connecting edge of the flexible gear ring barrel radially extends outwards to form a plurality of bosses, the bosses are arranged in the radial direction of the inner hole, and the number and the position of the bosses correspond to the number and the position of the round-head cylindrical long-strip-shaped grooves; a boss is arranged on the side wall of the flexible gear tooth ring cylinder, a flange is arranged on the boss of the flexible gear tooth ring cylinder, extends into the round-head cylindrical long-strip-shaped groove and slides in the round-head cylindrical long-strip-shaped groove, and the flexible gear is of a split combined structure. The breakthrough improvement of accurate meshing of the rigid gear and the flexible gear is achieved while the torque is effectively transmitted through floating connection of the output end. When the flexible gear is subjected to assembly deformation, the flexible gear sliding block can guide the tail end of the side wall to generate radial deformation, and compared with a traditional integrated structure, the design enables the assembly deformation stress peak value to be greatly reduced.

The invention discloses a high-dimensional-precision large-diameter special-shaped ring forging and a production method and application thereof, and belongs to the technical field of metal material machining. According to the method, the special-shaped surface of the ring forging is machined by using the hot rotary swaging round pressure head on ring rolling equipment, so that the metal streamline is obviously damaged, the isotropy of the structure of the special-shaped surface is improved, and quenching deformation is reduced. Besides, by means of real-time adjustment of the rotary forging and pressing head, special-shaped ring forgings which are concave and cannot be machined through traditional grinding rings can be machined, the size precision of finished products can be remarkably improved, the follow-up machining amount is reduced, machining deformation is reduced, the single-side machining allowance of the special-shaped faces of the final finished products is not larger than 1 mm, and axial and radial deformation does not exceed 0.5 mm / m.

The invention discloses a deep groove ball bearing fitting and ball sleeving device, belongs to the technical field of deep groove ball bearing fitting, and solves the problems that the existing manual fitting efficiency is low, steel balls are easily scratched, and the bearing quality and precision are influenced. The device comprises a bottom plate, an outer ring deformation pressurizing mechanism, an air cylinder driving mechanism, a lever mechanism, a sliding rail mechanism, a limiting mechanism and a deep groove ball bearing placing area, and the moving centers of the sliding rail mechanism and the limiting mechanism and the central axis of the deep groove ball bearing placing area are located on the same axis. The working end of the lever mechanism is connected with the front end of a sliding body of the sliding rail mechanism, and the air cylinder driving mechanism provides first radial thrust for the sliding rail mechanism through the lever mechanism. The sliding rail mechanism and the limiting mechanism pressurize the deep groove ball bearing outer ring on the deep groove ball bearing placing area to enable the deep groove ball bearing outer ring to generate elastic deformation, meanwhile, the limiting mechanism restrains the radial deformation range of the deep groove ball bearing outer ring and prevents plastic deformation, and the strain epsilon < lt > needs to be ensured; the material yield limit is epsilon y.

The utility model discloses a quick positioning tool for preventing radial deformation during machining of an axial thin-walled workpiece, which belongs to the technical field of machining of thin-walled workpieces and comprises a chuck body, a plurality of sliding chutes are uniformly distributed on the chuck body along the circumferential direction and are arranged along the radius direction of the chuck body, and clamping components for clamping workpieces are arranged in the sliding chutes. The clamping component comprises a positioning clamping jaw, a tool clamp and a connecting bolt, the tool clamp is connected with the positioning clamping jaw through the connecting bolt, and an adjusting component used for adjusting the positioning clamping jaw is arranged in the chuck body. According to the clamping tool, the thin-wall part can be rapidly positioned and clamped by combining the clamping component with the adjusting component, and the problems that an existing clamping tool for machining the axial thin-wall part is prone to causing non-uniform deformation of the part due to the stress relation, and the machined part cannot be rapidly positioned and clamped are effectively solved; the machining efficiency is low; and meanwhile, the percent of pass of machined parts is easily reduced.

A method for the fine adjustment of the rate of a mechanical oscillator with an oscillating inertial mass, equipped, in a first step, with an actuator made of material suitable for irreversible local micro-expansion under the action of laser fires, to impart to an inertia-block a radial travel during suitable laser fires on a writing zone of the actuator, in a second step, the initial rate of the oscillator is set and measured, in a third step, the direction and the value of the deviation required to achieve a predetermined rate range, and of the travel to be imparted to inertia-blocks are calculated, in a fourth step, a writing zone is subjected to femtosecond laser fires to create expansion lines by local molecular expansion to radially deform the actuator, in a fifth step the rate is measured and the third step and fourth step are repeated if required.

The application discloses a kind of sensor calibration device and method for rotating curved surface radial deformation measurement, comprising: rack, motor and frequency converter are provided on rack, coaxially fixed with to be calibrated gullet on the output shaft of motor, and frequency converter is used to adjust the rotating speed of motor;Displacement calibration combination device, including fixed on rack X direction guide rail, fixed on the slider of X direction guide rail Z direction guide rail and fixed on the slider of Z direction guide rail accurate displacement adjusting mechanism;Reflective optical fiber displacement sensor is arranged on the moving end of accurate displacement adjusting mechanism, and the probe of reflective optical fiber displacement sensor is arranged along X direction;With the following points: the calibrated surface is rotated by motor, and the obtained calibration curve considers the influence of rotating calibrated surface on sensor, without secondary correction;Calibrated surface rotating speed can be adjusted, multiple continuous calibration of calibrated surface at different rotating speeds can be realized, and calibration efficiency is improved.