Optimized design of helical gear tooth surface modification based on ROMAX
0 Preface The reducer for construction lift belongs to the heavy-duty hard tooth surface reducer, the heavy load hard tooth […]
0 Preface The reducer for construction lift belongs to the heavy-duty hard tooth surface reducer, the heavy load hard tooth […]
Arc bevel gear (Gleason system) has the characteristics of high transmission efficiency, compact structure and stable transmission, and is widely
0 Introduction The arc bevel gear adopts shrinking teeth, and the tooth line on the gear production crown wheel is
1 Introduction As a key part in mechanical transmission, bevel gear is widely used in aviation, aerospace, automobile and construction
0 Preface Cylindrical gear transmission is a commonly used mechanical transmission method in electric tool products, through cylindrical gear transmission
0 Introduction Gear transmission has large transmission power, high efficiency, accurate transmission ratio, etcAdvantages, is widely used in mechanical transmission.
preface China is a big country in casting production, the current degree of automation after casting cleaning is low, and
Due to its excellent casting properties, low density and good mechanical properties, sub-eutectic Al-Si alloys are widely used in aerospace
In the static meshing analysis, the influence of the load of spiral bevel gears on the meshing results has been
Titanium alloy is widely used in aerospace, military and other fields, with the rapid development of titanium alloy casting process,
Through the finite element software, output the angle of spiral bevel gear with four types of offset error under three
Transmission error (TE) is the main source of noise of spiral bevel gear system. Studying the transmission error of spiral
1. Grid division Spiral bevel gear has spatial geometric complexity, which makes the volume mesh of spiral bevel gear directly
Installation error and other factors will change the contact mode of the tooth surface from line contact to point contact.
The basic geometric structure of the ideal spiral bevel gear pair is formed by the rolling of two pitch cones,
In view of the universality of FZG gear gluing test, FZG gluing test gear is selected, and GB/Z 6413 1、
The theoretical comparison of the bonding strength of involute cylindrical gears The tooth surface temperature is an important parameter to
Generally speaking, the coincidence degree of the helical gear system is greater than 2, and the continuous gradual involution of
Subject to the layout structure of double-input-single-output gears, as shown in Figure 1, the meshing process of the left and
Because of the existence of helical angle, the meshing stiffness of helical gear changes not only with the change of
The physical model and simplified torsional vibration model of the rigidly supported double-input-single-output helical gear system are shown in the
In order to predict the surface topography generated in each simulation area, the local coordinate system OWXWYWZW attached to the
The parameters of a standard helical gear are shown in the table. According to the formula h, the half-width of
In practical applications, only knowing the thickness of the oil film can not accurately evaluate the lubrication state of the
First, confirm the parameters of lubricating oil. The parameters of lubricating oil commonly used on spiral bevel gears are as
In order to better judge the contact state and stress condition during the spiral bevel gear meshing process and analyze
1. Parameters of complete machine and gear Cylinder diameter/mm Stroke/mm Number of cylinders Rated power/kW Maximum torque / (N ·
The contact strength of the hemispherical bevel gear is characterized by the contact force of the hemispherical bevel gear. The
The stability of hemispherical bevel gear is one of the important factors to be considered in the design of gear
The transmission accuracy of the hemispherical bevel gear is characterized by the dynamic error of the rotation angle. The results
The rigid-flexible coupling method in simulation is used to establish the simulation model of the hemispherical bevel gear system. The
The transmission model of the flexible hemispherical bevel gear is shown in Figure 1. The hemispherical bevel gear 2 is
As shown in Figure (a), the pure rolling between a pair of pitch cones is equivalent to the meshing motion
Taking the driven cone as the research object, the elastic modulus of spiral bevel gear under the design point condition
Taking the driven cone as the research object, when the working condition of 20 132 r/min and 1000 kW is
Taking the driven cone as the research object, when the rotating speed of the fixed spiral bevel gear is 20
Taking the driven cone as the research object, after the numerical calculation of the spiral bevel gear near the design
1. Experimental conditions The experiment adopts a parallel spindle type finishing platform, and the workpiece to be processed is a
The Hertz-Mindlin with ar ⁃ chart wear model included in the EDEM software is used to simulate the wear amount
In the process of rolling and finishing, the movement track of the machining medium particles is complex and random. According
China plays a significant role in international collaborative gear projects, leveraging its manufacturing capabilities, expertise, and technological advancements. Through partnerships
Further harmonic response analysis is carried out on the basis of modal analysis. Firstly, the multi-body dynamics software Adams is
Modal analysis of driven gear in Abaqus, material properties of spiral bevel gear: elastic modulus E=207 GPa, Poisson’s ratio μ
Spiral angle is an important parameter of helical gears. Currently, the traditional methods for measuring spiral angle mainly include cardboard
Installation error is a factor that is affected by changes in production conditions, environmental factors and time. It is characterized
There are many factors affecting spiral bevel gear transmission, such as error, meshing stiffness, backlash, etc., but only the error
In order to analyze the influence of variable tooth line radius on the contact stress of circular tooth line cylindrical
The contact stress of the tooth surface of the circular tooth line cylindrical gear is closely related to the tooth
The basic parameters of circular tooth profile cylindrical gear pair are listed in the table. Based on the 3D modeling
As shown in Figure (a), the tooth surface Σ of circular tooth profile cylindrical gear can be considered to be
At present, there are many machining methods of circular tooth profile cylindrical gears that can be queried, such as double-edge
The basic parameters of helical gear pair and diagonal modification are shown in Table 1 and Table 2 respectively. In
The coordinate transformation of the right tooth surface of the workpiece generated from the imaginary profile rack is shown in
The tooth top hardness of cracked spiral bevel gear is 61~62 HRC, which meets the technical requirements of 58~62 HRC
Firstly, the overall layout of the whole planetary gear transmission structure is carried out in CAD, and the plane layout
High speed and high pressure gear pumps are generally used in aerospace and require extreme weight. For the consideration of
As shown in Figure (a), the time-varying meshing force curve of the helical gear product of a certain enterprise before
Because the red lead powder will condense into blocks when it meets the engine oil, which will interfere with the
Fig. 1 and Fig. 2 show the flash temperature and contact temperature curves of a helical gear pair before and
The Hertz contact stress and transmission error of the helical gear products of an enterprise before and after the experience