摘要:
The present invention relates to a method for milling at least one worm gear, in particular for hobbing at least one worm gear in a manner setting the contact pattern, having at least one mill as milling tool, in particular a hob as milling tool, wherein the milling tool at least temporarily executes an additional helical compensation movement and wherein the additional helical compensation movement is at least partially settable. Furthermore, the invention relates to an apparatus and to the use of the apparatus for carrying out the method.
摘要:
A plane that contains a central axis of a worm shaft (18) and that is orthogonal to a central axis of a worm wheel (19) is arranged at a central position of the worm wheel in a tooth width direction (W) thereof when no load is applied to a worm speed reducer (15). The worm wheel is formed by a cutting operation using a hob with a hob center offset from the central position toward an offset direction corresponding to a first direction along the tooth width direction. A pair of tooth flanks has different pressure angles at the central portion in the tooth width direction.
摘要:
A plane that contains a central axis of a worm shaft (18) and that is orthogonal to a central axis of a worm wheel (19) is arranged at a central position of the worm wheel in a tooth width direction (W) thereof when no load is applied to a worm speed reducer (15). The worm wheel is formed by a cutting operation using a hob with a hob center offset from the central position toward an offset direction corresponding to a first direction along the tooth width direction. A pair of tooth flanks has different pressure angles at the central portion in the tooth width direction.
摘要:
A manufacturing method for a worm wheel, the worm wheel meshed with an operational worm at usage, has steps of preparing a worm wheel, in which at least a surface layer of a tooth portion is made of synthetic resin, preparing a machining worm, in which pitch of teeth of the machining worm in an axial direction thereof is the same as that of an operational worm, diameters of tip and root portions of the tooth of the machining worm are equal to or more than those of the operational worm and abrasive grains are provided on a surface of the machining worm by means of electro-deposition, disposing the machining worm in a twisting position relative to the worm wheel and rotating the machining worm and the worm wheel with meshing each other so as to machining the tooth portion of the worm wheel.
摘要:
A method of machining the gear teeth (2) of a worm wheel (1) by engaging a worm (unshown) to which a polishing or grinding material is added with the gear teeth (2) of the worm wheel (1) with at least the gear teeth formed of a synthetic resin and rotating the worm. As shown in Fig. 5, an angle formed by the axis of the worm wheel and a virtual helical axis formed when the gear teeth of the worm wheel are formed is approximately aligned with an angle formed by the axis of the worm wheel and the helical axis of the worm for machining.
摘要:
In a method of machining gear teeth 2 of worm wheel 1 by causing a worm (not shown) on which abrasive or grinding material is added to mesh with the gear teeth 2 of the worm wheel 1, at least the gear teeth of said worm wheel being made of a synthetic resin, and rotating the worm, the machining is performed in such a state that the angle formed by the axis of the worm wheel and the virtual helical axis in forming the gear teeth of the worm wheel is made substantially equal to the angle formed by the axis of said worm wheel and the helical axis of said worm.