METHOD OF THREAD SHAPING Russian patent published in 2021 - IPC B23G1/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to mechanical engineering technology. The method of thread shaping includes the rotation of the tool and the relative movement of the tool and the formed thread according to the planetary kinematic scheme. A tool is used, the coordinate system of which is X_tY_tZ_t centered at the point O_t, located in the middle of the vertex with the length a of the profile of the profiled disk on the shaping diameter of the disk d_f, oriented in such a way that the axis O_tZ_t is parallel to the axis of the tail of the tool or the axis of the outer cylindrical surface. The O_tX_t axis intersects the axis of the tail of the tool or the axis of the outer cylindrical surface. The tool coordinate system coincides with the original XYZ coordinate system with a center at point O. Orientation of the XYZ coordinate system relative to X_thY_thZ_th at an offset Δ₁ between the OZ and O_thZ_th axes and an offset Δ₂ between the XY and X_thY_th planes, while the tool coordinate system X_tY_tZ_t is rotated relative to the original coordinate system XYZ sequentially at an angle ϕ_х around the OX axis and at an angle ϕ_у around the OY axis, or in reverse order. Taking into account the relative helical movement with the slope angle ϕ of the tool and the thread, the thread is formed with a given profile angle and the required degree of accuracy.

EFFECT: as a result, an expansion of the range and standard sizes of threads is provided.

10 cl, 20 dwg, 3 tbl