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FAQ

My company is using hobbing - shaving processing technology, the amount of shaving measurement, cross rod spacing and shaving teeth life size difference of 0.12mm-0.15mmThe accuracy level of the hob is related to the accuracy of the processing gear. The gears we processed require 7 levels of accuracy. The hob before each order is a class a precision, which is in conformity with the standardRecently a group of B level precision hob, no difference in other parameters, not on the bed test work, I would like to consult friends, what will the accuracy grade of hob parameters of gear, like our shaving, shaving is not able to correct these errors?

The higher the accuracy, the smaller the gear tolerances, the better the surface finish. But you want to see carefully, and write is B class, sometimes can not reach the B level requirements, and only test to know whether it is B level, so must buy big manufacturers of goods

Why is the front rake hob good for chip removal?

The rake angle of the front rake is lower than the front angle of the hob, but the inherent error is larger than the zero front angle, so the rough rolling force with low precision is often used

What do you think about the cutting hob?

The thin one becomes thin Mostly uniform, and don't cut it.

Hob mainly used for processing what?

Gear hob processing external gear; spline hob processing external spline

How to adjust the torque of disc hob commonly used in TBM?

Although this problem a long time ago, but still can answer, upstairs are not reliable. The torque of the disc hob is determined by adjusting the inside ring size. General choice of repair, after the experience is easy to handle, according to experience values often meet the requirements.

I have not heard of the operation of grinding hob, I would like to ask you, the friend knows, please explain, the more detailed the better, thank you for a friend here.

First of all thank more than two friends here, sharpening is not convenient, the price is Wuliubaiyi, want to put the tool grinding their own modifications, dividing head for dividing. We are tipped gear hob, front tooth surface misalignment, like 7 degrees, the specific degrees I don't know. I also want to ask whether this kind of knife and grinding wheel are right or right

How about the front edge, the normal and the normal tooth shape of the hob with rake angle?

To design hob, first of all, the tooth profile of the reference rack is required, and other related teeth are obtained according to the different structure of the hob. If the hob is a bevel, zero, or rake angle, the reference rack tooth profile can be used as the normal profile of the cutter. If the hob is the straight groove zero front angle, the above reference rack tooth profile shall be converted to the axial profile of the cutter. If the hob is straight groove with positive rake angle, it should be in front of the tooth or the axial profile of basic rack tooth profile conversion to the knife, which is who, detection technology, and the dielectric depends on the designer tool depth and a site. If the hob is a bevel, zero, or front angle, the above reference rack profile shall be converted to the front tooth profile of the knife. While the original basic rack tooth profile and linear tooth shape (involute curve tooth (workpiece) and processing of non involute workpiece) two, the landlord asked not clear answer, ask you to give an example, test analysis.

Experts, EG, how much is the hobbing hob used in the actual production of engagement? Feed rate? What is the effect of spindle speed, machining accuracy? What is the M2 M2.5 M3 M3.5 M4 M5 / M6 M7 M8 M9 M10 engagement, the lathe is Chongqing 3180 thank you teachers, generous with your criticism

All kinds of modulus gear feed is not the same, generally the first knife is bigger, the back a few small knife. But some have a knife to survive.