Abstract
The article deals with the design of equipment for thermal strengthening operations (hardening, tempering and normalization) of low-rigid long-length lead screws of high accuracy. The technology of thermal strengthening processing is given. In this paper, a new approach is proposed to the processing of lead screws and their treatment technology to obtain high geometric accuracy. Relatively long and thin products are characterized by common deviations of shapes from the straightness of the axis and the uneven pitch of the helix. The technological process of their production should include bending operations and multiple tempering to stabilize residual stresses. This ensures the straightness of the part and the stability of the thread pitch. As an effective method and promising direction, a thermal strengthening processing is proposed. Recommendations are given on technical methods of axial deformation and determination of the optimal modes of thermal strengthening. The principle of operation of the installation and algorithms of the technological process are described.
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