Abstract
In the article the principles of construction of modern thread-cutting equipment based on mechanisms of parallel structures are considered. The optimal structure was identified and combined with a variant of the combination of MPS with the ability to simultaneously change the length of the rods and the coordinates of reference hinge, ensuring the implementation of a significant number of technological methods in the same workplace for one installation details. The principle of operation of the resulting hybrid thread-cutting machine with a combined MPS of a modular construction in which the executive body can perform a complex spatial movement is described. Based on morphological analysis and structural-layout synthesis, followed by optimization according to the criterion of reliability and economic efficiency, the hybrid layout of a six-spindle thread-cutting machine with MPS. The design of a precast plastically deforming tap of increased resistance is presented due to the possibility of multiple regrindings by shortening the worn-out section of the working part; providing high accuracy and quality of the obtained threads.
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