Turret for CNC lathes with pneumatic actuators TURN TOOL DRIVE

摘要

The invention relates to mechanical engineering and can be used on machine tools with numerical control, preferably turning group.;Revolving head according to the utility model consists of a housing (2) with two mounted therein on diametrically opposite sides, pneumatic cylinders with clamps for fixation of the tool disc (1), the main air cylinder (6) for a tool disc rotation with slots to accommodate mandrels with cutting tools. To rotate the tool drive has a shaft (3) mounted with a toothing (4) and the toothed rack (5) having one end connected through the fork (7) with a piston rod main pneumatic cylinder (6) and the other end - through a special coil spring (8) to the housing (2) of the turret. The toothed rack (5) arranged adjacent to the toothing, is provided with small teeth meshing with similar teeth of the gear ring (4) during the forward air cylinder rod (6). In the course of the return rod of said air cylinder (6), the teeth of the rack toothing (4) slips over the teeth to which the toothed rack (5) is biased with a small force of said spring, keeping it motionless position. Removable toothing (4) can be rigidly mounted on the shaft by keyed or splined connection, or by fitting with heating. The size of the teeth of the toothed rack (5) and the gear ring (4) is made with a modulus of not more than 2 mm, pitch - 6.28 mm, number of teeth - 36, rake angle - 10 degrees, the clearance angle - 55 degrees. 4 ZP f ly-4-yl., 1 tab.