最新刊期
期 9 ， 2019
- 摘要：Taking RV160E reducer as the research object, the assembly sequence of RV-E is studied. The RV160E sub-assembly and the poly-part parts are divided, and the assembly model diagram, assembly association diagram and assembly association matrix are established. The assembly sequence of RV160E is studied by using the cut set theory. By introducing constraints condition, eight theoretically feasible assembly sequences are obtained. Then, the assembly sequence simulation and interference checking are performed by SolidWorks, the range of possible assembly sequences is reduced to four. Finally, the RV160E whole machine is assembled and tested for efficiency and backlash. The feasibility of the four assembly sequences is verified.关键词：RV reducer;Assembly sequence;Layered assembly;Association diagram
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发布时间：2022-09-24 - 摘要：In paper-transferring mechanism with variable speeds and textile machines，the driven gear are required to output multifarious motions when the driving gear rotates for 1 cycle. A new gear drive，called uniform-variable gear is proposed. The notion of the uniform-variable gear refers to non-circular gears where the driven gear can bring about uniform，accelerated and decelerated motion during rotation，whilst the driving gear itself rotates at a constant speed. The active design method of this new gear drive is researched. According to the characteristics of smooth curve and closed pitch curve，the mathematical models of pitch curves are derived based on given motion feature of the driven gear. The pitch curves of I-type and II-type uniform-variable gears are built through the design of example drives. The assembly models of uniform-variable gears are given by using the software of Croe. By using the software of Adams, the motion simulation of the gear is carried out, the simulation results are basically consistent with the given curve shape. The results show that, by changing the angular velocity and angular acceleration curves of the driven gear, the pitch curves of the uniform-variable gear can be directly and effectively controlled.关键词：Non-circular gear;Uniform-variable gear;Active design;Pitch curve;Acceleration
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发布时间：2022-09-24 - 摘要：Tooth surface wear and bearing clearance are important factors affecting gear system dynamics, in order to reveal the influence of tooth wears and bearing clearance on the dynamics of gear system, a six-degree-of-freedom bending-torsion coupled model is established, which takes into account the tooth surface wear, bearing clearance, friction and backlash. The dynamic differential equations are solved by Runge-Kutta method and the dynamic response of the system is obtained. The results show that when the gear changes in unworn phase to mild wear phase, the amplitude of dynamic transfer error decreases and the vibration is weakened. With the increment of tooth surface wear, the amplitude of dynamic transmission error increases and the vibration is strengthened when the gear reaches severe wear phase. With the increase of bearing clearance, the peak-to-peak value of dynamic transfer error will increase and resonance phenomenon will appear, the stability of system will decrease.关键词：Tooth surface wear;Clearance;Meshing stiffness;Dynamic response;Dynamic transfer error
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发布时间：2022-09-24 - 摘要：For the dynamic modeling and simulation of RRR-RRP six bar press linkage with joint clearance, the corresponding vector bond graph procedure is proposed. Under the condition of considering revolute joint clearance and compound revolute joint, the vector bond graph model of RRR-RRP six bar press linkage is established. By the corresponding method, the algebraic difficulty brought by differential causality of the mechanism vector bond graph model in automatic modeling and simulation is solved. Based on these, the computer automatic dynamic modeling and simulation of RRR-RRP six bar press linkage with joint clearance is realized, and the effect of joint clearance to the cutter acceleration, mechanism component angular acceleration, centroid acceleration of mechanism component and joint constraint force is analyzed. Finally, the reliability and validity of the procedure proposed are illustrated.关键词：Vector bond graph;Dynamic simulation;Joint clearance;Compound revolute joint;RRR-RRP six bar press linkage;Differential causality
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发布时间：2022-09-24 - 摘要：Taking spur gear pair as the research object, a 6-DOF coupled bending-torsion nonlinear vibration model including time-varying meshing stiffness, comprehensive error, backlash and input torque is established. Based on the bifurcation diagram and Poincare map, the influence of backlash, input torque, their coupling effect and the support stiffness of the main and follower gear bearings on the vibration characteristics of the system is studied. The results show that under a certain input torque, the system transits from single-period response to chaos through bifurcation and catastrophe with the increase of backlash. Under a certain backlash, the system transits from chaos to one-period response through inverted bifurcation and catastrophe with the increase of input torque. When the input torque is large, the backlash has little effect on the system response. The stiffness of the follower gear bearing has a great influence on the vibration characteristics of the system.关键词：Backlash;Input-torque;Support stiffness;Bending-torsion coupling;Vibration characteristic
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发布时间：2022-09-24 - 摘要：Taking a pair of spiral bevel gear pairs as the research object, a static unloaded transmission error model of actual tooth surface is established, which is free from tooth surface equation. The model is based on the tooth surface point measured by the coordinate measuring instrument，the model forms a discrete tooth surface point through interpolation and obtains the static unloaded transmission error through contact analysis. The theoretical tooth surface STE of the model is compared with the theoretical tooth surface STE obtained by the classic TCA, the correctness of the method is verified, and the actual tooth surface STE is calculated. The three-dimensional coupling dynamics model of spiral bevel gear pair is established. In this dynamics model, factors such as rotor, load, time-varying meshing stiffness and backlash are considered. The STE of theoretical tooth surface and actual tooth surface are introduced into the dynamics model in the form of discrete points, and their influence on the dynamics performance of spiral bevel gear pair is compared.关键词：Actual tooth surface STE;Spiral bevel gear;Contact analysis;Dynamics model;Dynamic performance
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发布时间：2022-09-24 - 摘要：A kind of fully rotational decoupled and partly translational decoupled mechanical leg (PUPR-PUPR-PRPAS) is synthesized by combining the screw theory, the practical function of the robot and the motion transformation matrix of the mechanical leg. First, the DOF of mechanical leg is obtained by analyzed the practical function of walking machining robot. Then, the number of branches and the distribution of DOF on branches can be obtained according to DOF. Next, the actuation screw is used to obtain the driving screw with the aim of movement decoupling by analyzing the kinematics screw and constraint screw of the mechanical leg. The configuration synthesis of decoupled parallel mechanical leg is carried out with the practical function of the robots. The branches are selected out in those obtained configurations according to the norm of functions and coordination to constitute the primary configuration. Finally, the compound simplification is carried out among single-degree-of-freedom joint pairs of mechanical leg, and the simplified motion transformation matrix is analyzed. The third branch is further improved to determine the final configuration of the mechanical leg.关键词：Walking machining robot;Machining mode;Walking mode;Decoupling performance;Motion transformation matrix
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发布时间：2022-09-24
Theory·Reserach
- 摘要：In order to solve the problem of weak stiffness of flexible wheels and more mechanical friction in existing robot harmonic reducer motors, a new type of nutation reducer motor is proposed by combining nutation deceleration motion with magnetic meshing principle. The structural characteristics and transmission mode are described, and the design method and parameter selection are given. The internal magnetic field characteristic and the torque angle characteristic of the reduction motor are analyzed by using Maxwell finite element software.关键词：Nutation drive;Magnetic meshing;Reduction motor
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发布时间：2022-09-24 - 摘要：Aiming at the problem of time-varying friction in the meshing process of spur gear pair, the meshing model of spur gear pair is established, and the relative sliding velocity, rolling speed, sliding-rolling ratio, comprehensive radius of curvature and tooth contact pressure of the gear pair at the meshing point are deduced. The variation of the friction coefficient of the tooth surface under the change of single tooth load during the single-to-double tooth alternating meshing process is studied. Based on the potential energy method, the analytical formulas of meshing stiffness of spur gear pair with time-varying friction are deduced, the variation law of meshing stiffness of spur gear pair under non-friction, constant friction and time-varying friction is analyzed, and then the influence of the parameters such as gear modulus, tooth width, pressure angle, roughness and input torque on the time-varying meshing stiffness of spur gear pairs under time-varying friction is studied. The results show that the time-varying friction coefficient changes suddenly in the single-to-double tooth alternating meshing zone, and tend to zero at the pitch point; the effect of friction makes the stiffness of single teeth increase at the approach process, and decreases during the recess process; the constant friction force makes the meshing stiffness change suddenly at the pitch point; the time-varying friction force makes the meshing stiffness change suddenly at the single-to-double tooth alternating meshing zone, and the change law is consistent with the non-friction situation at the pitch point; the meshing stiffness of gear pair increases with the increase of modulus and tooth width, and decreases with the increase of pressure angle; the variation of meshing stiffness increases with the increase of tooth surface roughness; and decreases with the increase of input torque.关键词：Spur gear pair;Time-varying friction coefficient;Time-varying mesh stiffness;Influence factor analysis;Potential energy method
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发布时间：2022-09-24 - 摘要：The meshing backlash of cycloidal-pin gear has a great influence on the meshing transmission performance and motion accuracy of RV reducer, so the accurate calculation of meshing backlash is an important content in the study of contact characteristics of cycloidal-pin gear. At present, the calculation of meshing backlash in China is mostly based on theoretical design of tooth profile, without considering the tooth profile deviation of cycloidal gear in the process of modification design and processing, so the calculated theoretical meshing backlash is inconsistent with the actual meshing backlash. For this, a new method for calculating the meshing backlash of cycloidal-pin gear is proposed, considering the influence of tooth profile deviation. The real meshing backlash of cycloidal-pin gear is obtained from the point of view of engineering and mathematics. By effectively superimposing the tooth profile errors of cycloidal gear on the theoretical tooth profile, the digitized tooth surface with high approximation to the actual machined tooth surface is reconstructed based on non-uniform rational NURBS. According to the established contact analysis model of cycloidal-pin gear transmission, the minimum distance between the center of the pin tooth and the tooth profile of cycloidal gear is calculated by differential geometry principle. The accurate meshing backlash under the influence of tooth profile error is obtained, which provides a new idea for the transmission performance research and tooth profile modification design of cycloidal-pin gear pair of RV reducer.关键词：RV reducer;Cycloidal-pin gear;Tooth profile deviation;Meshing backlash
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发布时间：2022-09-24 - 摘要：Based on the structural analysis of the existing Lepelletizer planetary gear mechanism (PGM), an optimal method for searching the feasible shifting sequence by establishing the velocity diagram based on the lever analogy is proposed. In this method, the basic links of PGM and all possible shifting elements are converted into points on the equivalent lever coordinate system, the velocity vector diagram of all possible speed ratios is drawn, and the shifts are classified. The shifting sequence is determined according to the shifting logic of transmission and the number of shifting elements as constraints, the transmission ratio of each shifting is deduced. The ratios of the each line segment in the velocity vector diagram and the characteristic parameters of the ordered lever diagram of PGM are calculated, so as to determine the attributes of all links of the transmission. The transmission which arranged with shifting elements is checked by the planar-graph. This method is used to optimize the 6~10 speed Lepelletier PGM. The results show that the two structures of 6-speed and one structure of 8-speed are the same as those of the patented ones, which proves that the method is correct and feasible.关键词：Lever analogy;Lepelletier;Planetary gear mechanism (PGM);Automatic transmission (AT)
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发布时间：2022-09-24 - 摘要：In order to study the control strategy of active mode switching for single shaft parallel hybrid electric vehicles based on identification of road gradient, the numerical model of hybrid electric vehicle and road gradient model are built on the Matlab. On the basis of road gradient identification，the speed and demand torque of hybrid electric power system at the next time are predicted by the simulation model. The working mode of hybrid electric vehicle is determined according to the required torque and the SOC of the battery at the current time and the next time. On the basis of determining the working mode first，taking the minimum fuel consumption as the objective function，the optimal torque allocation is carried out in real time with dynamic programming algorithm. On the premise of economy，the hybrid power system can achieve the shift gear at the uphill moment to meet the needs of driver's power performance and drivability.关键词：Identification of road gradient;Model prediction;Dynamic planning;Active mode switching
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发布时间：2022-09-24 - 摘要：Tooth profile modification design is a key link in the design and manufacture of cycloidal gear of RV reducer. However, the influence relation of tooth profile error and motion accuracy on tooth profile shape has not been considered in the current design of cycloidal gear profile modification. A new method of cycloidal gear profile inverse active modification considering the influence of tooth profile error and transmission error is proposed. Through the contact analysis of the cycloidal pin wheel of RV transmission, the modification coefficient ac, constant coefficient b and mismatch reference point meshing phase angle
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发布时间：2022-09-24 - 摘要：A wheel-foot composite wall-climbing robot which can meet different obstacle avoidance requirements is proposed, and its dynamics model is established by Kane's method. Based on the model, the adsorption force equation of the wall climbing robot in the limit motion state is deduced, and the stability margin constraints are established. The functional relationship between the minimum adsorption force satisfying the stability requirements and the limit motion state of the robot is obtained. Theoretical basis is provided for reasonable control of adsorption capacity under different obstacle avoidance working conditions.关键词：Obstacle negotiation;Biped-wheel hybrid;Wall-climbing robot;Kane's method;Stability;Dynamics analysis
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发布时间：2022-09-24 - 摘要：Through the analysis and study of involute gear modification, a new method is applied to modify the gear nonworking surface. And the tooth profile equation of the involute gear nonworking surface is built. According to the equation, the finite element analysis model of different modification parameters is established. The static finite element analysis of the gear is carried out by using the software of Ansys Workbench, the stress cloud diagram of gear tooth root is obtained. Through the contrast between the different amounts of modification, the relationship between the modification amount and the root stress is obtained. The results show that the gear tooth stress distribution can be improved by modifying the gear, the stress of the toot of gear is decreased as the increase of repair parameters.关键词：Involute gear;Modification curve;Finite element analysis;Tooth root
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发布时间：2022-09-24
Design· Calculation
- 摘要：The analysis method of tooth flank mismatch meshing is studied for the spiral bevel gear of automobile drive axle. Firstly，the mathematical model of tilt cutting method is established，and the cradle angle is derived according to the meshing equation，so the tooth flank equation can be simplified. Secondly，the gear meshing angle is derived based on the equality unit normal vector of the gear meshing mathematical model（TCA），so the TCA solving equations can be simplified. On this basis，the tooth flank mismatch values are calculated by calculating the deviations between the pinion actual tooth flank and pinion reference tooth flank which is fully conjugated with the gear，and the tooth flank Ease off topology is constructed by graphical expression. Compared with the traditional tooth flank meshing analysis method，the proposed method not only reduces the number of equations，but also makes the algorithm more stable. The Ease off topology can visually display the whole tooth flank mesh state and improve the current TCA output.关键词：Spiral bevel gear;Tilt cutting method;Tooth flank meshing analysis;Tooth flank mismatch;Ease off topology
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发布时间：2022-09-24 - 摘要：Aiming at the problem that it is difficult to accurately identify the fault severities and compound faults of rolling bearings，a method based on lifting dual-tree complex wavelet packet（LDTCWP）and deep wavelet auto-encoder （DWAE） is proposed. Firstly，the transfer learning strategy is introduced to extend the target data amount. Secondly，the vibration data of bearings is decomposed into three layers via lifting dual-tree complex wavelet packet. The sample entropy，permutation entropy and energy moment of each sub-band are calculated as raw eigenvectors. Finally，the raw eigenvectors are sent into DWAE for quadratic feature extraction and fault diagnosis. The fault diagnosis experiment results show that the method can effectively identify multiple fault types and multiple fault severities of bearings. Compared with traditional machine learning methods，the proposed method has better generalization ability，feature extraction ability and recognition ability in the case of insufficient target vibration data.关键词：Rolling bearing;Lifting dual-tree complex wavelet packet;Deep wavelet auto-encoder;Transfer learning;Fault diagnosis
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发布时间：2022-09-24 - 摘要：The strength，service life and reliability of gears are seriously affected by grinding burn. The gear form grinding experiments with different grinding parameters are carried out to measure the grinding power during the grinding process. After grinding，the tooth profile is tested by Barkhausen nondestructive test and microhardness test. The effects of different grinding parameters on the grinding power and the RMS values of the Barkhausen signal of the tooth profile are analyzed. A theoretical basis for the study of burn in gear form grinding is provided by this work.关键词：Gear;Form grinding;Grinding power;Grinding burn;Barkhausen NDT
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发布时间：2022-09-24 - 摘要：Aiming at the phenomenon of timing gear whine noise caused by high power density diesel engine, considering the transmission error and other factors, a 12V150 diesel engine is taken as the research object and valve train timing gear transmission system model is established by Romax software. The tooth surface loading and peak value and fluctuation range of transmission error under the excitation of the transmission error are analyzed. The size and distribution of the unit length load of the tooth surface is used as the standard, the middle gear pair of the timing gear system is modified. It shows that the tooth surface load can be distributed to the middle part by gear modification, the load distribution area increase and the load reduce, transmission error reduce, two different modification schemes are compared and analyzed, the vibration acceleration is reduced by 38% and 56.9% respectively.关键词：Diesel;Timing gear;Gear modification;Whine noise
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发布时间：2022-09-24 - 摘要：To analyze the speed and acceleration fluctuation characteristics of the scraper chain transmission system during the meshing process, a double-sided contact fluctuation model is constructed, the correctness of the model is verified by experiments. The relationship between acceleration fluctuation and tension fluctuation is obtained by analyzing the strain signal and acceleration signal. The virtual prototype of the scraper chain system is established by using Adams software and the dynamics simulation is carried out. The influences of different driving modes, working inclinations and laying lengths on the fluctuation of the scraper chain are explored and the analytical results could provide a reference for reasonable design of the meshing drive mode between sprocket and scraper chain.关键词：Fluctuation characteristic;Double-sided contact;Virtual prototype;Dynamics simulation
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发布时间：2022-09-24 - 摘要：For Dual-tree complex wavelet transform decomposition of the number of layers need to be determined prior to and the sub-band after the occurrence of frequency aliasing, an improved dual tree complex wavelet transform is proposed to deal with gearbox composite fault feature extraction. Firstly, the decomposition layer number and the effective sub-band of the dual-tree complex wavelet transform are adaptively determined. The obtained sub-bands are subjected to frequency removal, the sub-band FFT is used to determine the main frequency and its notch filtering is performed to ensure that the frequency aliasing is eliminated, so that each sub-band only contains a unique characteristic frequency. Then using the proposed method and the methods such as Variational Mode Decomposition, the noise-containing simulation signals are decomposed and compared to verify the feasibility of the proposed method. The proposed method is applied to the vibration signal of the gearbox composite fault and successfully extracted the gear spalling and bearing outer ring fault. The proposed method provides a new idea for the extraction of complex fault features of gearboxes.关键词：Improved dual tree complex wavelet transform;Gearbox compound fault;Remove frequency mixing
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发布时间：2022-09-24 - 摘要：A composite gearbox fault diagnosis method based on multi-resolution singular value decomposition (MRSVD) energy characteristic and fuzzy kernel clustering (KFCM) is proposed for the complex fault signal components of the gearbox and the difficulty in identifying fault characteristic. Firstly, the vibration signal of the gearbox under different working conditions is acquired to obtain a similar signal and five detail signals by performing MRSVD decomposition. Then, the energy characteristic of the six component signals are extracted and normalized to obtain the relative value of the energy. Finally, KFCM is used for fault diagnosis. The experimental results show that the MRSVD energy characteristic extraction method can effectively extract the composite fault characteristic of the gearbox, and KFCM can accurately diagnose the gearbox composite fault.关键词：Gearbox;MRSVD;Energy characteristic;KFCM;Fault diagnosis
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发布时间：2022-09-24 - 摘要：In normal driving Dual Clutch Transmission (DCT) preselect gear to achieve power shift. But preselection will lead a higher torque loss i.e. lower efficiency. The modeling and simulating of the vehicle dynamics are carried out by using AVL Cruise, the influence of preselection strategy and non-preselection strategy on fuel consumption under the New European Driving Cycle (NEDC) is analyzed. Comparing the average transmission efficiency and combined fuel consumption of NEDC the following conclusion can be made: non-preselection can get 0.7% lower fuel consumption than preselection regarding NEDC. In consequence under premise of without affecting the power shift, optimizing the preselection strategy to increase the working time of preselection neutral gear can improve the vehicle fuel economy.关键词：Cruise simulation;DCT;Fuel economy;Modeling and simulation;Transmission
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发布时间：2022-09-24 - 摘要：The gearbox is one of the core components of the tracked vehicle. In order to accurately describe the internal coupling characteristics during the operation of the gearbox, based on the establishment of the multi-rigid model of the gearbox, the box, the drive shaft and the bearing are flexibly，the gearbox rigid-flexible coupling dynamics simulation model is established. Taking a practical working condition as an example, the variation law of the dynamic meshing force of the gear pair in rigid mode and rigid-flexible coupling mode is compared and analyzed, and the time-frequency domain curves of the load characteristics of each drive shaft and the surface acceleration of the box are obtained. By using the bench test, the accuracy of the gearbox rigid-flexible coupling model is verified. The simulation process and results provide a model and theoretical basis for the study of gearbox condition monitoring and fault diagnosis for subsequent tracked vehicles.关键词：Tracked vehicle;Gearbox;Rigid-flexible coupling;Dynamics characteristic
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发布时间：2022-09-24
Test·Analysis
- 摘要：Based on the principle of single flank measurement, a dynamic testing machine for plastic gear transmission error is developed and can simulate the actual working condition of the plastic gear and realize the dynamic measurement of transmission error under the condition of no-load, load and different speed of plastic gear with different parameters. The working principle, configuration and design of key parts of the testing machine are mainly introduced. The dynamic measurement test of the transmission error is carried out, and the variation of the transmission error at no load, load and different speeds is briefly analyzed. The test results show that the test machine can realize the fast measurement of plastic gear transmission error, which can improve the plastic gear transmission performance and provide scientific basis for the design and improvement of plastic gear.关键词：Plastic gear;Gear measurement;Transmission error;Gear single-flank measurement;Dynamic testing machine
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发布时间：2022-09-24 - 摘要：In order to solve the degenerative feature extraction issue of hoisting mechanism gearbox, an online extraction method for degeneration feature based on mathematical morphological fractal dimension and sliding window Weibull fitting is proposed. Firstly, according to the analysis period, the fractal dimension of the vibration energy spectrum is calculated and forming a fractal evolution curve. Performing a three-parameter Weibull fitting on the fractal sequence in the window after setting the sliding window width and step size and the scale parameter of the model is used as the performance degradation feature indicator. The effectiveness of the method is verified by using the full-life data of the hoisting gearbox of the industrial site monitoring. The results show that the mathematical morphological fractal dimension is able to describe the fractal complexity of vibration energy spectrum. The scale parameter of Weibull distribution is able to reflect the performance degradation trend of fractal curve smoothly, which lays a theoretical foundation for further solving the problem of online health assessment.关键词：Shore bridge;Degradation feature extraction;Fractal dimension;Weibull distribution;Gearbox
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发布时间：2022-09-24 - 摘要：For solving the problem how the hand incapacitation patients do rehabilitation training and daily life easily, an under-actuated exoskeleton hand is designed. Firstly, aiming at the coupling motion between joints, a multi-link and gear transmission system is designed and a single drive to drive the entire finger movement for under-actuation rehabilitation training is achieved by studying the physiological structure of the human hand. Then, the kinematics model of a single finger is established by using analytic method. The four-finger fit grip model is established by the kinematics model of a single finger, and the simulation is carried out. Finally, kinematics simulation analysis and prototype experiment are carried out. Through the comparative analysis of the results, the exoskeleton hand movement realizes the expected motion with reasonable motion and small error.关键词：Exoskeleton hand;Connecting rod transmission;Kinematics modeling;Prototype experiment
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发布时间：2022-09-24 - 摘要：In order to fully and accurately identify the fault category of gear，a feature space model based on multi-domain characteristic parameters such as time domain，frequency domain and energy is established. On this basis, an intelligent fault diagnosis method based on multi-domain feature and improved D-S evidence theory is proposed. Relevant feature parameters are extracted from the measured data as the diagnostic samples，and multiple evidences are constructed with the preliminary diagnosis results of particle swarm optimization support vector machine（PSO-SVM）. The experimental results verify the effectiveness of the final diagnosis results obtained by the improved D-S evidence theory in this work.关键词：Gear fault diagnosis;PSO-SVM;Weighted D-S evidence theory;Information fusion
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发布时间：2022-09-24 - 摘要：According to the specific working requirements of a press for producing pyrophyllite block, the manipulator for the grasping and pressing down assembling of the workpiece with cylindrical inner wall using an inner bracing method is designed. The manipulator mainly consists of an inner bracing three claws finger and a tubular hand palm, and the finger system is flexibly connected with the tubular hand palm. The fingers can be retreated and hided in the tubular hand palm when the manipulator makes assembly work for avoiding a male mould at the chamber center of a pressing mould. The structure and working principle of the manipulator are introduced, and the design for the key parameters of the manipulator, including the clamping force of inner bracing, stable transfer conditions for clamping the workpiece, the force restrictions for cylinder driving are expounded. Simulation analysis and experimental results show that the manipulator can meet the requirements of specific operating objects. Relevant research provides new ideas and practices for the design and improvement of the operating manipulator of the automatic device.关键词：Press for producing pyrophyllite block;Workpiece with cylindrical inner wall;Inner bracing grasping;Press down assembly;Manipulator structure
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发布时间：2022-09-24 - 摘要：A rotating and translating integrated mechanical device is designed. The structure，principle and main components of the device are introduced in detail，and the force acting on the mechanism is analyzed. Taking its application in winch as an example to solve the problems of wire rope disorder and rope biting in winch，the relevant type selection design is carried out. The three-dimensional model of the mechanism is established by UG， and kinematics simulation analysis of the rotating and translating integrated mechanism is carried out by Adams. The rotational speed，speed and displacement diagrams of the main components are obtained，and through comparing with the value calculated by theory，it is concluded that the mechanism can meet the functional requirements， the feasibility and accuracy of the mechanism are verified.关键词：Rotation;Translation;Structure principle;Force analysis
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发布时间：2022-09-24
Development·Application
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