Gear hobbing tool shifting method for automobile gear
The gear hobbing and tool shifting on the gear hobbing machine can be completed by manual operation or automatic control […]
The gear hobbing and tool shifting on the gear hobbing machine can be completed by manual operation or automatic control […]
Most of the inherent accuracy of the gear hob can be destroyed. Therefore, if the tolerance of tooth profile is
Calculate the tool travel according to Hoffmeister’s formula: Where: FA — axial tool path of gear hobbing cutting; H1max –
As shown in the figure, the tool shifting length of gear hobbing hob is calculated according to the following formula:
The cutting process of gear hob should be divided into pre machining area and generating area; Most of the metal
Gear hobbing multi groove hob is shown in the figure. When using gear hobbing multi groove hob, the following conditions
The selection of gear hobbing multi groove hob has the following advantages: (1) Gear hob has many grooves and good
The number of hobs Z0 has an important influence on the machining time In some cases, the use of gear
The selection of large diameter gear hobbing hob has the following advantages: (1) Under the condition of maintaining the same
Theoretically, the larger the rake angle of the gear hobbing hob, the smaller the cutting load of the cutter teeth.
When the rake face of the chip holding groove is unevenly distributed relative to the center of the inner hole
The conical gear is a straight tooth with a module of 5 and a number of teeth of 20. The
The linear part of the side edge of gear hobbing hob mainly completes the generation of gear tooth profile, but
The influence of gear hobbing hob accuracy on machining accuracy is shown in the figure. 100% of the total meshing
Gear hobbing processing and application practice show that the manufacturing errors of machine tools, cutting tools and gear blanks are
According to the stress analysis of gear hobbing hob, further analyze the stress of gear hobbing hob shaft, as shown
The cutting pattern of gear hobbing hob teeth reflects the metal process and tooth profile formation in the cutting groove
The forming method of gear hobbing tooth profile is shown in the figure. Starting from the contact cutting between gear
Automobile gear hobbing has the characteristics of high productivity and good universality. It is a gear processing technology widely used
The design parameters of gear hobbing hob for automobile gear processing are complex, mainly including outer diameter, total length, inner
Through the analysis of gear hobbing machining error, the following are mainly completed: The formation mechanism of tooth profile error
In the process of gear hobbing, the machined materials and cutting conditions affect the unit cutting force of the hob,
The research on gear hobbing process in foreign countries was carried out earlier. Germany and Japan began to carry out
Gear hobbing is processed by the principle of generating method. It can be used to process spur gear, helical gear,
Driven by the rapid development of automobile industry, China’s automobile gear manufacturing industry shows sustained and rapid growth. According to
The tooth profile of spiral bevel gear is a complex free-form surface. At present, its measurement is mainly carried out
The correctness of research methods and theories needs to be verified by relevant experiments. The experiment is divided into two
The spiral bevel gear processed by face hobbing adopts the principle of indirect generation method to ensure that the large
The spiral bevel gear for face hobbing of spiral bevel gear generally adopts equal height tooth system, and its root
The forming process of bevel gear face hobbing can be regarded as a meshing transmission between the generating wheel and
This paper studies the theory of tooth surface forming principle, geometric parameter design, cutting adjustment calculation, tooth contact characteristic control
In terms of the theory of face hobbing of spiral bevel gears, F.L. Litvin and Qi fan analyzed the machine
The research has deepened the domestic understanding of the end face hobbing processing method, but these studies rarely mention the
The research on the influence of shaft intersection angle error on gear hobbing processing is now realized in combination with
When no external error is considered in gear hobbing, that is, the center distance installation error of gear hob is
Based on Mathematica software, draw the right tooth surface of one tooth of spur cylindrical gear, and combine the right
The new digital simulation method of cylindrical gear hobbing process is proposed, which provides a new way for cylindrical gear
The new digital simulation method of cylindrical gear hobbing process is proposed. By analyzing the position relationship between the hob
The error caused by the change of radial distance between the gear hob and the axis of the processed cylindrical
Gear as the core mechanical foundation. Despite the high requirements for the manufacturing and installation accuracy of gears, with the
During gear hobbing, the hob axis and gear axis must meet a certain axis intersection angle. The installation axis intersection
Digital simulation technology is a comprehensive technology based on a variety of disciplines and theories, using computer and its corresponding
Gear hobbing processing principle, as shown in the figure. There are many processing methods for cylindrical gears. According to the
With the progress of science and technology, the introduction of technology and the deepening of technological transformation, the processing technology
When machining and manufacturing gear hobs, there is an error between the generating surface of gear hobs and the theoretical
The basic research idea is: carry out digital simulation on the gear hobbing process of cylindrical gear, analyze the position
The machining error of gear is determined by the process error factors of machine tool, cutting tool, wheel blank and
According to the research results, the existing problem is to simplify the gear hobbing process in three-dimensional space to two-dimensional
Gear hobbing machine is widely used in automobile, machine tool, engineering machinery and other machinery manufacturing industries. In gear hobbing,
The mapping law between machining system error, gear hobbing principle error, tool error, machine tool vibration and gear machining accuracy
Gear hobbing accounts for more than 90% of the gear forming process. In the cutting process of gear hobbing machine
The model is shown in the figure. The tooth thickness error of the tool in the axis direction will affect
First, create the process model of cutting tool machining gear, as shown in the figure. Therefore, we create the following
When the gear hobbing machine processes the gear, the accuracy of the cutter has a great influence on the gear
As shown in the figure, it is the schematic diagram of error transmission in the machining process on the gear
The principle of gear hobbing process is to mesh the gear workpiece with the hob. The gear hobbing hob is
The machining principle of gear hobbing is shown in Figure 1. Theoretically, during gear hobbing, the gear hobbing hob meshes
Aiming at the most typical gear hobbing process of gear forming, focus on the multivariate mapping relationship between gear accuracy
Gear hobbing is a very efficient and typical tooth making method. It is widely used in semi finishing of hard
Under extremely complex conditions, the bearing capacity, service life, safety and meshing tooth surface contact behavior of high-performance gear transmission