SU604632A1 - Mandrel - Google Patents

Description

During the spin cycle, the ha 5 moves with the sleeve 7 to the right (from the position shown in Fig. 1). In this case, the spring 4 is released, the pusher 2 moves the sleeve 7 slightly to the right, freeing the cams 9 and the machined part 10. At the same time, the disk 13, acting on the ends of the L-shaped tacks 11, moves them to the right. They move away from the end of the machined part and, due to the interaction of the screw groove and the pins 20, rotate and do not prevent the machined part from being removed and the workpiece installed. When clamping the ha 5 and the sleeve, 7 moves to the left, the disk will release the L-shaped clamps, and they are moved to the left by the action of the springs 12, rotate and press the sleeve 7 to the body end 1 after further movement of the sleeve to the left spring 4, there is no sweat to the left screw 3 with the pusher 2, which will unclamp the cams 9 and finally secure the workpiece. Upon further movement to the left, the end face of the disk 13 will begin to interact with the piston 16 of the hydraulic cylinder 15. The piston, moving left, creates pressure in the oil cavity of the hydraulic cylinder, which will begin to move to the right the rods 18 interacting with the ends of the L-shaped tacks. At the same time, the clamps also move to the right, release the end of the workpiece for processing and rotate. Such a mandrel

3 S er

7 4 / J

Wl 11 / /

/ f No. 7 f8 / 12 ..9

20

. f

improves the accuracy of fixing parts at the previously machined face and hole.

Claims (2)

1. An adapter, in the central opening of the casing of which a spring-loaded pusher is attached to the drive thrust, in contact with its curved surfaces with the cams placed in the radial grooves of the casing, which in order to increase the accuracy of fixing parts, the mandrel is equipped with a preliminary pressing mechanism parts to the end of the body, made in the form installed in the body with the ability to rotate the l-shaped spring-loaded tacks. 2. The mandrel according to claim 1, characterized in that, for the purpose of security. When retracting the tacks when machining the butt of the part, a disk with holes and a hydraulic cylinder are installed coaxially with each other; in the holes of the shaft are located the rods passing through the aforementioned disk holes and intended to act on the l-shaped hooks. Sources of information taken into account in the examination 1. Precision self-centering devices. Catalog of the company "Tobler. Franco-Swiss joint stock company. 1972, p. 7, fig. 825 Si / 5A n 21 iflus.2