Precision forming technology of spiral bevel gear
The workpiece processed by precision forming technology can meet the requirements of parts with little or no processing, so precision […]
The workpiece processed by precision forming technology can meet the requirements of parts with little or no processing, so precision […]
The setting of finite element preprocessing is very important, which not only determines whether the spiral bevel gear can converge
With the continuous development of the world automobile industry, the machining technology of spiral bevel gear is also changing, and
Spiral bevel gear transmission mainly transmits the motion and power between vertical shafts, which requires the existence of bevel gear
Spiral bevel gear is mainly used in high-speed and heavy-duty staggered shaft transmission. The gear pair has compact structure and
Velocity field is a vector to measure the flow of material in the process of plastic deformation. Through the observation
Figure 1 shows the driven bevel gear of rear axle in 46910 / 37 commercial vehicle. It can be seen
The precision forging process of spiral bevel gear generally has some problems, such as difficult forming, difficult cavity filling, low
Driven spiral bevel gear plays an important role in automobile rear axle reducer and is an important part of reducer.
Through the load meshing analysis of spiral bevel gear and its simulation with computer, the following conclusions are obtained: 1)
Taking the number of large teeth of the gear pair as 47 and the number of small teeth as 33
At a certain moment of gear transmission, the locally conjugate tooth profile engages and transmits load. When more than two
It can be seen from the comparison of tooth surface contact area under no-load and load that there is a
In the process of gear transmission, the rotation angle of each tooth of the driven gear can be expressed as:
Taking the spiral bevel gear pair with 39 large teeth and 13 small teeth as an example, the shape of
When considering the deformation of gear teeth under load, the basic meshing equation shall be rewritten as: Δ r2、 Δ
Taking the spiral bevel gear pair with 47 big teeth and 33 small teeth as an example, when the meshing
Tooth contact analysis (TCA) is an advanced technology to simulate and analyze the tooth meshing process of gear pair by
According to the contact conditions of the contact points, the contact equation of the contact boundary contact point pair can
The finite element analysis model is very important for finite element calculation. The models and boundary conditions are different, and
The two elastic contact bodies Ω 1 and Ω 2 are separated into two independent objects. According to the elastic
Due to the limitation of computer conditions, in the early application of finite element method to study gear problems, only
Spiral bevel gear is point contact in theory. After bearing, the contact area becomes surface contact due to elastic deformation.
The actual contact part on the tooth surface of a pair of bevel gears under normal meshing operation conditions is
The cutting adjustment parameters of machine tool play an important role in the tooth contact of spiral bevel gear. How
Spiral bevel gear is point contact conjugate transmission. Under light load, the gear pair forms an elliptical contact area near
According to the establishment of coordinate system and spatial matrix transformation, such as the distance from any point of wheel
Spiral bevel gears have been widely used in many industrial fields, such as aviation, automobile, shipbuilding, construction machinery and so
At present, most of the spiral bevel gears used in China adopt the American Gleason gear system, and its design
i02 is the roll ratio of the machine tool and the process pitch cone of the spiral bevel gear. As
NC machining is a new technology in spiral bevel gear machining. Because of its great technical difficulty, at present, only
In the process of spiral bevel gear machining, the large wheel often adopts the generating method and forming method, and
In the processing program of NC automatic programming language, the part that transforms the tool path generated in the pre-processing
When two moving surfaces s (1) and S (2 When two moving surfaces s (1) and S (2) are driven,
Compared with straight bevel gears, spiral bevel gears have the following advantages. 1. The contact ratio is increased, that is,
When two surfaces s (1) and S (2) are completely conjugate, their relative curvature at the contact point is called
Along the tooth length direction, see whether the big end and the small end of the tooth are consistent to
When two tooth surfaces mesh, the two tooth surfaces must be tangent at a point m in space. It can
Due to the need of use, the position relationship between the axes of a pair of spiral bevel gears is
Let s (T) be a surface moving continuously in space, u and V are its surface parameters. When expressed by
Spiral bevel gear is a kind of complicated gear among all kinds of gears. Because of its special tooth profile,
According to the processing principle of spiral bevel gear, to process the bevel gear on the NC machine tool shown
The machining theory of spiral bevel gear is to get rid of the original Gleason machine tool shaking table, eccentric
The machine tool adjustment of the variable method for machining the small wheel is shown in the figure, and the
The research of bevel gear in China started relatively late. Since the 1970s, the gear machine tool of Gleason Company
Tool position calculation is to calculate the position and attitude of the tool relative to the workpiece (referred to as
The pitch distance of the production wheel is R01, the helix angle β 01, and the rolling correction coefficient of
The history of gear technology can be traced back to 3000-5000 AD, almost synchronized with human history. Gear transmission is
When the small wheel is machined by the variable method, the tooth profile angle of the small wheel cutter head
The normal curvature and short-range torsion of the tooth surface of the pinion at the calculated point M are as
Let the angular velocities of large and small wheels are: ω G2 and ω G1: The speed of the big
The right-hand wheel and the left-hand production wheel are an aligned hyperboloid gear pair, and the tooth surface of the
This paper mainly discusses the shaping method and regrinding method of sharp tooth scraping cutter head with hard tooth surface
When the parameters of the motion law of the machine tool are determined, the motion equations can be formed by
Professor Zhang Shusen of Liaoning University of engineering and technology put forward a new method of tooth profile design and
The process pitch cone node of the spiral bevel gear coincides with the design pitch cone node, the pitch cone
Since 1982, Hanjiang tool factory and Taiyuan Heavy Machinery Factory have cooperated to study 18 ‘single edge precision cutting cemented
The workpiece coordinate system is established by taking the installation surface of the workpiece gear as the coordinate plane and
Since the 1960s, Japan, the former Soviet Union and some other countries have successively carried out the development and research
The axial section of the cutter head is made, and the coordinate system is established as shown in the figure.