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Intersection angle error of gear hob installation shaft

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...

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Concept of modified gear

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...

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Installation requirements of hob spindle and gear hob

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,...

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Selection of gear hob

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...

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Tooth surface equation of gear hob

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...

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Establishment of gear hob coordinate system

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...

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Determination of axial position of gear hob

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...

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