SU1514517A1 - Thread-cutting friction chuck - Google Patents

Description

The invention relates to the machining of metals by cutting,

in particular for threading. The purpose of the invention is the expansion of the technology. The invention relates to the machining of metals by cutting, in particular to threading.

The purpose of the invention is the expansion of technological capabilities by providing threading to a certain length and in blind holes.

FIG. 1 shows the cartridge, general view, cut; in fig. 2 is a section A-A in FIG. I.

The cartridge is arranged as follows.

The mandrel 1 for mounting the cartridge in the machine spindle is fixed in the housing 2 and fixed on the bearing 3. In the housing 2 there is a friction clutch 4 for connecting the mandrel 1 and the housing 2, the holder 5 of the tap. Holder 5 soy2

chesky opportunities due to ensuring threading on a certain length and in deaf openings. The mandrel 1 is fixed in the housing 2 and fixed on the bearing 3. In the housing 2 there is a friction clutch 4 for connecting the mandrel 1 and the housing 2, the holder 5 of the tap. The body 2 is fitted with an emphasis 7 in the form of a stepped sleeve 8, screwed into the holder with a lock nut 9, for engagement with the end face of the product. The clutch 4 is in contact with the spring 10 and the system, bearings 1 1 and 12. In the case mounted ratchet mechanism, including spring-loaded dogs, interacting with the groove of the housing. 2 Il.

dinen with body 2 by means of pins 6. Moreover, parts 5 and 2 are arranged to float relative to each other. On the body there is a stop 7, which is made of a stepped sleeve 8, screwed into the holder with a lock nut 9, to interact with the end of the product. The friction clutch 4 is in contact with the spring 10 and the bearing system 11 and 12. In the case there is mounted a ratchet mechanism 13 (FIG. 2) containing a pawl 14, which rests against the groove 16 of the case 2 with the help of spring 15 with one end and another end through the axis 17. Parts 2 and 5 are configured to float by means of bearings 18 and 19.

ЗЦ 1514517

3

1514517

four

The cartridge works as follows.

The machine tool includes dyeing and axial flow. Since the friction clutch 4 is in a compressed state, the rotation of the spindle from the machine spindle (not specified) is transmitted to the tap. Threading takes place until the stop 7 collides with the end of the product, after which the axial feed of the stop 7 stops. The face, mandrel 1, case 2, sliding in the support, continue to move down. The stop 7 moves the ball bearing 11 upwards, squeezing the spring 10 through the ball bearing 12. 1:

Friction clutch slips (off). The housing 2 together with the tap stops rotation, the mandrel 1 continues to rotate. Include reverse on the machine. Since at this time the friction clutch 4 is disengaged, the coupling of the mandrel 1 with the housing 2 is performed by the ratchet mechanism 13. There is a wrenching of the tap from the product. The stop 7 under the action of the spring 10 moves down. Friction clutch 4 is included. The cycle of work ends. In the process of operation of the cartridge part 5 is centered relative to the part 2 by means of a floating device from the bearing system 18 and 19, and the torque is transmitted through the pins 6.

Claims (1)

Claims friction cartridge for cutting threads comprising a housing connected through a spring-loaded friction clutch with a mandrel, characterized in that, in order to expand technological capabilities, the cartridge is provided with an emphasis in the form of a sleeve mounted on the housing with the possibility of axial movement and interaction with the friction clutch and the workpiece, and ratchet mechanism, including spring-loaded dogs mounted on the mandrel with the ability to interact with the groove of the case.