Calculation of engagement length and coincidence degree of helical gears
Actual length of meshing line of tooth profile In the process of gear transmission, the meshing line of tooth profile […]
Actual length of meshing line of tooth profile In the process of gear transmission, the meshing line of tooth profile […]
Helical gear is widely used in high-speed and heavy-duty transmission because of its smooth transmission, strong bearing capacity, low noise,
In order to test the vibration reduction effect of two-stage high-speed helical gear transmission after modification, and to compare the
In order to test the vibration reduction effect of single-stage high-speed helical gear transmission after modification, the time-varying meshing stiffness
Although the vibration characteristics of high-speed helical gear transmission of an electric vehicle reducer are studied, some practical conclusions are
The gear contact analysis is carried out by using romax software, and the normal load per unit length of the
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, firstly, the time-varying meshing stiffness
In the gear transmission system, the ideal gear will drive according to the constant transmission ratio. However, in practical engineering,
Dynamic modeling is the basis of simulation analysis. The simulation model of high-speed helical gear transmission system of an electric
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
The vibration characteristics of two-stage helical gear drive under meshing impact excitation are further analyzed, and the vibration response of
In order to study the influence degree of two kinds of excitation factors on the system vibration, the vibration speed
The obtained time-varying meshing stiffness curve and meshing impact curve are input into the dynamic equation group at the same
In order to study the influence of the amplitude of time-varying meshing stiffness on the vibration characteristics of the system,
In order to study the influence of the mean value of the time-varying meshing stiffness on the vibration characteristics of
The time-varying meshing stiffness curve obtained above is input into the dynamic equations to obtain the vibration response of single-stage
The dynamic model of an electric vehicle reducer is established, and the time-varying meshing stiffness curve and meshing impact curve
Taking a high-speed helical gear transmission of an electric vehicle as the research object, the structure diagram is shown in
Due to the mass and inertia of the gear, the meshing impact speed will produce meshing impact force. The size
From the above analysis, it can be seen that the gear error and the loaded deformation of the gear teeth
After solving the differential equations, the vibration acceleration of two teeth in each direction is synthesized into “the relative vibration
In the figure, OP is the center of the driving wheel, og is the center of the driven wheel, P
In order to qualitatively study the influence of meshing impact time on the vibration characteristics of helical gear transmission, the
In order to study the vibration characteristics of single-stage helical gear transmission system under meshing impact excitation, the obtained meshing
The main error items of gear are: base pitch deviation Δ FPB, tooth profile error Δ FF, tooth alignment error
In the whole meshing area of gear pair, the meshing point of error free gear transmission is always on its
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, the vibration characteristics of the
Due to its advantages in efficiency, service life and application range, gear transmission has become an indispensable part of the
As the most commonly used motor centralized drive transmission system of electric vehicles, the motor is directly connected with the
The transmission system of automobile is one of the core competitiveness of automobile. The transmission system of traditional fuel vehicle
In the process of gear transmission, there is a deviation between the actual base pitch and the theoretical pitch due
In the whole meshing area of gear pair, the meshing point of error free gear transmission is always on its
In order to compare the time-varying meshing stiffness results obtained by the three calculation methods of material mechanics method, finite
Tooth thickness is an important parameter for balancing the fatigue life of large and small wheels.Since the number of small
Bending fracture of teeth and pitting and flaking of tooth surface are the two most common failure modes of main
The locating elements for spiral bevel gears are V-shaped blocks and press plates. After positioning the workpiece, before drilling, it
1 Construction of modified tooth surface The modified tooth surface is constructed by superposition of theoretical tooth surface and modified
The positioning of the workpiece is achieved by the contact between the positioning surface on the workpiece and the V-block
The calculation of impact force in this paper is based on the principle of energy conservation at the moment of
Process analysis: The processing of spiral bevel gears is mainly divided into the following stages: 1) Billet processing: Billet forming
Fixture positioning and fixture fixture fixture fixture is very important in the process of parts machining. If positioning is not
1 Selection of Rough Benchmarks The principle of choice is: (1) Non-machined surface principle. (2) The principle of minimum machining
TE at small wheel φ1A is smaller than LTE under larger load, indicating that the gap between teeth is not
The meshing stiffness of the rodent point can be calculated by LTCA. The basic idea is to increase the load
The key to calculate the impact force of rodent is to accurately locate the rodent point.Based on the position of
In order to improve the bending strength of the small gear root, the heavy contact area is usually designed to
Blank type determination: In general, 20GrMnTi alloy steel is used for driving axle gears of automobiles and carburized and quenched.CA1092
Spiral bevel gears transmit power and change speed during working process. Rolling and sliding exist between the meshing tooth surfaces
1.Transfer the power output from the engine to the driving wheels via the transmission and the main drive. 2.Change the
Calculation Method of Rolling Impact Force of Modified Helical Gear Based on Contact Analysis of Tooth Bearing Rolling impact can
(1) After tooth surface modification, under a small load, the clearance between the teeth of the latter pair is sufficient
Figure 1 shows the calculation results of the load-dependent position of the rodent points on the standard and modified tooth
Based on the proposed calculation method of meshing impact force, the optimum profile design of small gear tooth surface with
When TE is greater than LTE at small wheel angle_1A under small load, it means that the clearance between teeth
Under ideal conditions, the normal line of the standard involute tooth surface follows the direction of the theoretical engagement line
Corrective measures According to heat treatment process inspection and finite element calculation results, the transmission staggered helical gear is quenched
Correction in the contact area of the Klingenberg helical gear teeth can be achieved by changing the following parameters: (1)
1. Calculation Model In order to investigate the contact stress on the tooth surface of this transmission staggered helical gear,