Gear hobbing is a very efficient and typical tooth making method. It is widely used in semi finishing of hard tooth surface and precision forming of soft tooth surface (especially large gears that cannot be ground), but the structure of machine tool, tool structure and tooth surface forming mechanism...
Under extremely complex conditions, the bearing capacity, service life, safety and meshing tooth surface contact behavior of high-performance gear transmission are directly related to the macro and micro morphology and microstructure distribution of gear matrix and tooth surface. Therefore, the design requirement of controllable micro morphology and texture of...
The matching of machining quality and machining efficiency is an issue to be seriously considered in finishing machining. After the selection of machine tool, cutting tool, workpiece and fixture, the selection of cutting parameters directly affects the morphological characteristics of finishing surface. There are many factors affecting the tooth...
In order to further verify the correctness and effectiveness of the profile design method of the rake face of the hobbing chamfering tool, the hobbing chamfering experiment of cylindrical helical gear is carried out on a domestic NC chamfering machine (shown in Fig. 1). Firstly, input the data of...
Large gears generally refer to gears with gear modulus > 16 mm, which are widely used in heavy machinery such as engineering machinery, mining, metallurgy and so on. There are many kinds of large gears, such as spur gear, arc gear, bevel gear, etc. At present, there are two...
After the assembly of hob and helical gear, the following settings must be completed before the hobbing motion simulation of helical gear: (1) Select enter mechanism mode. (2) Define the gear pair connection. Select the moving shafts of hob and face gear respectively, select “user defined” in the “properties”...
The research on the machining method of face gear is an important part of the research on face gear transmission technology. When machining helical gear with gear shaper, the machining efficiency is low due to the free stroke during machining. Although gear grinding can improve the tooth surface accuracy...
The main problems in the production line are as follows: Based on the actual situation of automobile gear production line, determine the design requirements of hob and list the conditions and steps of hob ordering; The design requirements, common problems and solutions of three common types of hobs, such...
The hob cuts at a certain position, and the cutting teeth bear different working loads, so the wear amount of each tooth is different. If the hob is moved a distance along its axis after machining one or more gears, the new cutter teeth will enter the cutting area,...
The selection of gear hobbing cutting speed should consider the tool material and appropriate coating, the modulus of the processed gear, the material of the processed gear and its heat treatment conditions. Use drawing No. H5 in Harbin gearbox factory 207 / 330 gear hob (module 4, pressure angle...