During gear hobbing, the gear hob axis and workpiece axis must conform to a certain axis intersection angle. However, when the gear hob is installed, there may be the intersection angle error of the gear hob installation shaft. Because the hobbing simulation model proposed in this paper is feasible...
Because the processing technology and cutting tools of the modified gear are not different from those of the standard gear, in order to meet and adapt to the actual needs of production, the modified gear not only has the characteristics of wide application and accurate transmission of the standard...
By transforming the matrix MWG, the points e (Xe, ye, Ze) and f (XF, YF, ZF) in the gear coordinate system SG are transformed into the gear hob coordinate system WS. According to the normal equation and formula of the gear tooth surface, the normal of any point on...
Without considering the installation error Σ e of the shaft intersection angle Σ, the helix angle of spur gear β 2 = 0, the intersection angle between gear hob axis and spur gear axis Σ is obtained from the formula: The installation center distance is not considered α Installation...
From the three-dimensional meshing model of gear hob and gear, it can be assumed that each point on the gear tooth surface meshed with gear hob extends a blank along its normal direction. In the process of gear hobbing, that is, when the gear hob and the processed gear...
The fit between hob spindle and gear hob inner hole should be accurate and firm, which is necessary to improve the machining accuracy of gear hobbing. When installing the gear hob, the following points should be considered: (1) Before installing the gear hob, clean the hob spindle, hob hole,...
With the improvement of gear hobbing technology, gear hobs are gradually developing towards integration, small diameter and multi head. The selection principles of gear hobs are as follows: (1) Selection of gear hob head number. When rough machining gears, the requirements for gear machining efficiency are relatively high. Under...
Based on the gear hob coordinate system: SW, (ow: XW, YW, ZW), the involute helicoid model of gear hob is established. Any point m on the involute helical surface of gear hob can be recorded as M（ ρ,θ)。 As can be seen from the figure, According to the spatial...
Based on the selection of basic worm, it is determined that the gear hob selected in this subject is involute worm hob. In order to simplify the calculation, the coordinate system in line with this study is established. Gear hob coordinate system: SW, (ow: XW, YW, ZW), take the...
The alignment of gear hob refers to the coincidence degree between the symmetry axis of any tooth (or groove) of gear hob and the center line of gear blank when the gear hob is installed on the cutter bar. Whether the gear hob is aligned with the workpiece or...