How about the front edge, the normal and the normal tooth shape of the hob with rake angle?
Generally speaking, the front rake or the negative rake of the hob, the slot is straight. If the spiral groove hob, then the front face of the eccentric distance can not be controlled, the front and left side of the tooth shape can not be measured using the front face of the intuitive measurement method, there will be no knife surface measurement method is inevitable. If you really need, you can use the following formula Tan = w (Tan an*cos af+-sin AF *sin WF /cos WF) this formula can be converted into the reference tooth angle parameters of front blade tooth angle formula in meaning, can I see the previously available analytical formula
The reference rack tooth shape (normal tooth shape) is unique. It is the mother of other tooth forms. So, no matter what type your knife is made of, its original baseline rack profile is the same, so that the required piece of work can be cut.
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.
