Establishment of three-dimensional solid of hypoid gear
Import the hypoid gear coordinates into CATIA, use the surface function to get the gear surface of the hypoid gear, […]
Import the hypoid gear coordinates into CATIA, use the surface function to get the gear surface of the hypoid gear, […]
For the noncircular gear planetary gear train mechanism shown in Figure 1, the noncircular closed track of the end point
Table 1 shows the basic parameters of hypoid gears, and table 2 shows the basic parameters of large and small
The schematic diagram of the seedling taking mechanism of non-circular gear planetary gear train is shown in the figure. The
Theoretical tooth surface equation of spiral bevel gear pinion spiral bevel gear is processed on milling machine. The shaking table
In generating machining, the tooth surface equation is still statically indeterminate through the formula, and the incremental angle of the
1. Reverse engineering inspection process Firstly, the digital model of the specified workpiece is obtained through the three-dimensional optical scanning
Ollicon hypoid gear processing machine tool (as shown in figure (a)) is mainly composed of cutting cutter head, cutter tilt
1. Small module gear processing method and its advantages and disadvantages At present, the common processing methods of small module
1. Create global variable equation Click the command “Σ equation” in the “tools” menu of SolidWorks software, and use the
Oricon hypoid gears are machined by end face hobbing. Figure 1 shows the gear cutting principle of the end face
1. Data preprocessing Because the point cloud data of the involute cylindrical spur gear measured by the three coordinate machine
(1) Reverse engineering modeling technology construction curve The principle is to use as few control points as possible under the
As we all know, the tooth surface of spiral bevel gear is a very complex spatial surface. Using coordinate measuring
According to the linear fatigue cumulative damage theory Miner theory, the stress amplitude of each stress level will cause certain
1. Division of nodes on tooth surface The axis plane coordinate system is established based on the arc tooth surface
Spiral bevel gears have the advantages of stable transmission ratio, strong bearing capacity, low transmission noise and long service life,
1. Verification of tooth profile shape in reverse engineering software The figure shows the tooth profile in the reverse engineering
There are mainly two kinds of hypoid gears for axle: Gleason circular arc involute teeth and cycloid contour teeth, which
Taking involute spur gear as an example, this paper explains the mapping, calculation and verification of involute spur gear. In
When the nominal stress method is used to calculate the contact fatigue of spur gear of reducer, it is mainly
Based on TCA technology, the corresponding high-speed and heavy-duty spiral bevel gear surface impressions and transmission error curves before and
The parameter verification of involute spur gear reverse engineering includes modulus, tooth shape angle, crown height coefficient, tooth root height
The cylindrical gear of reducer bears the random load of road surface and the load of driving motor at the
Since the coincidence degree and the transmission error amplitude at the transition of high-speed and heavy-duty spiral bevel gears are
1. Determine the modulus, tooth profile angle, top height coefficient and tooth root height coefficient When determining the module, tooth
Increase the transmission ratio to 30, take the gear ratio of 2:60, and design and calculate the gear parameters. The
The main factors causing transmission errors of spiral bevel gears include the quasi conjugate characteristics of the tooth surface, deformation
According to practical experience, contact fatigue often occurs in helical cylindrical gears of transmission. The basic parameters of the high-speed
According to the theory and three-dimensional modeling process of hypoid gears with small number of teeth and large reduction ratio,
Without considering the elastic deformation of the tooth surface (assuming that the gear is completely rigid), a pair of local
When solving the plane coordinate points of the tooth surface of the hypoid gear pinion, because the hypoid gear pinion
1. Establish the precise modification model of cylindrical gear Among the components of electric vehicles, cylindrical gear is the most
In order to more intuitively reflect the meshing characteristics of spiral bevel gear pairs, tooth contact analysis (TCA) technology is
Since the coordinates (x, y, z) of any point on the tooth surface of hypoid gear have the following corresponding
Parameters Driving wheel Driven wheel Number of teeth 29 48 Modulus 1.75 1.75 Helix angle 16 16 Accuracy class 7
Generally, during the operation of the automotive electronic control system, the ECU will calculate and judge the physical parameters and
According to the tooth contact analysis principle and gear meshing principle, the machining parameters of hypoid gear are calculated through
In the driving process of electric vehicles, the gearbox is one of the main causes of vehicle noise. At this
In the process of envelope generation of hypoid gear pinion, there is a meshing relationship between hypoid gear wheel tooth
The vibration acceleration in all directions of the helical gear is synthesized into the relative vibration acceleration a in the
The hypoid gear pinion with small number of teeth and high speed uses the principle of envelope method to envelope
Regardless of the deformation, the meshing point of a pair of helical gears at any time should be on the
Taking the high-speed input stage gear pair in the secondary reducer of a pure electric vehicle as the research object,
From the load stroke curve, it can be seen that the load change in the whole deformation process can be
Since the large hypoid gear wheel is processed by forming method, the profile of the hypoid gear wheel tooth surface
Select a single pair of teeth for tooth surface contact stress analysis, import the three-dimensional solid models of double circular
The machine tool for machining the tooth surface of the driving wheel (small wheel) of the hypoid gear pair has
The cutter head coordinate system SG for machining hypoid gear wheel is shown in Figure 1. The vector diameter RC
The single side tooth surface of circular arc tooth profile cylindrical gear is composed of multiple curved surfaces. The establishment
1.Calculation of contact stress of cylindrical gear The transmission gear is a cylindrical gear. During the meshing process of the
The basic parameters for machining hypoid gear wheel by forming method include: horizontal tool position H2, vertical tool position V2,
Theoretical circular arc tooth profile circular arc tooth line gear tooth surface can be generated by the circular arc tooth
The purpose of orthogonal trial calculation is to find the key geometric factors and the best combination of hypoid gears.
As shown in the figure, the stress distribution is given when the reduction is 1.5mm, 3.0mm and 4.5mm respectively. At
Single circular arc tooth profile arc tooth profile a single tooth is shown in Figure a. its tooth profile curve
For loaded working side: Radial force frad1d of hypoid gear pinion is: Radial force frad2d of hypoid gear wheel is:
The strain distribution in the deformation process shows that the overall deformation of the half shaft gear is small, and
Because the hypoid gear pair with less than 5 small teeth is designed, radial displacement and tangential displacement are comprehensively
General NC machining is often used to process Cycloid Bevel Gears and hypoid gears, and the mold cavity used in