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Tool shifting of automobile gear hobbing

The amount of channeling should be based on the maximum allowable wear of hobs. Firstly, the allowable gear hobbing channeling of hob is determined by tool modulus and machining accuracy. When the maximum wear limit is reached, it must be sharpened. The determination of gear hobbing tool shifting is...

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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 on the gear hobbing machine. Automatic control of knife channeling is most suitable for mass production. However, manual gear shifting is usually used for a small number of production...

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Calibration of automobile gear hob

Most of the inherent accuracy of the gear hob can be destroyed. Therefore, if the tolerance of tooth profile is very small, the diameter jump of automobile gear hob must be strictly controlled. First of all, the jumping of automobile gear hob leads to out of tolerance of tooth...

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Selection of cutting path for gear hobbing

Calculate the tool travel according to Hoffmeister’s formula: Where: FA — axial tool path of gear hobbing cutting; H1max – the maximum chip thickness at the tooth top of gear hobbing hob, generally 0.2mm is used to determine the axial tool walking amount; Z2 — number of gear teeth;...

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Selection principle of groove number of gear hob

Gear hobbing multi groove hob is shown in the figure. When using gear hobbing multi groove hob, the following conditions shall be met: (1) Ensure that the blade back of the cutter tooth has sufficient service length (grinding times) and sufficient stiffness; (2) There is enough chip holding space...

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