Braking structure of a lathe for allowing a workpiece to be gripped in position

A braking structure of a lathe for allowing a workpiece to be gripped in position, comprising

• a braking mechanism coupled to a spindle of a lathe, which projects from a head stock on a bed of the lathe, and to which a chuck is joined;
• the spindle having a holding member securely joined thereto, which is arranged next to the head stock;
• the holding member having a ringed pad positioned thereon;
• the head stock having an annular supporting member fixedly joined thereto;
• the braking mechanism including:
• (a) at least one pressing piece held in the head stock;
• the head stock having a plurality of passages extending through it to face one side of said at least one pressing piece;
• (b) a power source connected to the head stock so as to provide pressure to said at least one pressing piece through the passages extending through the head stock;
• (c) a brake pad secured on an annular edge of the holding member secured on the spindle;
• (d) a brake disc, the brake disc being interposed between said at least one pressing piece and the holding member;
• the brake disc being faced with the ringed pad secured on the holding member;
• (e) a plurality of composite elastic pushing elements, the composite elastic pushing elements being fitted on the annular supporting member so as to face said at least one pressing piece;
• and
• (f) two sensing and detecting devices fitted on the annular supporting member so as to face said at least one pressing piece.