The linear part of the side edge of gear hobbing hob mainly completes the generation of gear tooth profile, but there are inevitable errors in the manufacturing of gear hobbing hob, which will produce the original tooth profile angle error of gear hobbing hob. When the gear crown angle...
According to the change rule of the contact lines on the left and right sides of the pitch line in the figure, the friction arm hLp and hRp at the midpoint of the contact lines on both sides of the pitch line of the helical drive wheel can be...
The influence of gear hobbing hob accuracy on machining accuracy is shown in the figure. 100% of the total meshing error on the full length of the meshing line in figure a is reflected in the tooth profile error, 100% of the error on any circle of the spiral...
Gear hobbing processing and application practice show that the manufacturing errors of machine tools, cutting tools and gear blanks are reflected on the processed gears to varying degrees, resulting in gear motion error, stationarity error and tooth contact error. In gear hobbing, the normal distance between the actual tooth...
According to the stress analysis of gear hobbing hob, further analyze the stress of gear hobbing hob shaft, as shown in the figure. From the stress of gear hobbing hob shaft, it can be seen that all parts of the torque on the gear hobbing hob shaft at a...
The cutting pattern of gear hobbing hob teeth reflects the metal process and tooth profile formation in the cutting groove of gear hobbing hob, the load distribution and change of each tooth of gear hobbing hob, the cutting shape and change, etc. The point matrix of the rake face...
The speed of driving wheel is 1200 R / min, the meshing frequency of automobile gear is 160 Hz, the rotation frequency of driving wheel is 125 Hz and the rotation frequency of driven wheel is 25 Hz. (1) The vibration refinement spectrum of automobile gear under normal assembly...
The forming method of gear hobbing tooth profile is shown in the figure. Starting from the contact cutting between gear hobbing hob and workpiece, the number of cutter teeth involved in cutting gradually increases, and will not increase after reaching a certain degree. When the cutting is about to...
All defective automobile gears will produce high-level pulses in operation, which will usually arouse the natural frequency (also known as natural frequency) of automobile gears. The test diagram of vibration amplitude spectrum caused by natural frequency is shown in the figure. Substitute N1 = 624 R / min and...
The test diagram of vibration amplitude spectrum caused by tooth profile error of automobile gear is shown in Figure 1. Substitute N1 = 624 R / min and N2 = 128 R / min into the formula, F1 = 65.4 Hz and F2 = 12.8 Hz; Substitute into the...