SU522924A1 - Threading device - Google Patents

Description

one

The invention can be used in the field of mechanical engineering for cutting internal and external threads.

There are known devices for threading a tool installed with the possibility of reversing, including a mechanism for feeding a part to a tool located in a housing.

With a simplified construction slit in the device being described, the mechanism for feeding a part to a tool is designed as a rigidly fastened in the housing, a tool surrounding the instrument, inside which a spring-loaded sleeve is housed axially, which has articulated cams at its end that interact with the mounted in the housing ring having a tapered surface.

The drawing shows the kinematic scheme of the device.

The device includes a shaft 1, on which is fixed the toothed Ring 2, which is made integral with the right end coupling half. The wheel 2 is in engagement with the bristles 3, performed at the same time with the left end coupling half and secured to the shaft 4.

The two other coupling halves of the gear 5 and 6 are made with the possibility of axial movement in the axial direction using forks2

7, electromagnet 8 and springs 9. They are in constant engagement with gear 10 mounted on spindle 11. A universal self-tightening chuck 12 with hinged cams is designed to secure the part. The cartridge is fixed in a movable sleeve 13, on which stop-stops 14 and 15 are placed. A microswitch 17 is fixed on the fixed glass 16, which together with the stops is designed to limit the translational movement of the part. The release of parts from the cartridge occurs under the action of the spring 18 and the ring 19.

The device works as follows.

When transmitting rotation from the motor to shaft 1 under the action of spring 9, fork 7 holds in coupling half coupling 3 and 5. Spindle 11 rotates right. The part is inserted into the chuck jaw 12. When the part is fed to the cutting tool, the chuck jaws of the chuck rotate around their axes and during the forward movement of the part they clamp it.

With a self-guided givapia of the part, the movable sleeve 13 moves inside the fixed cup 16. The contact of the microswitch 17 is closed, the electromagnet 8 is turned on, the fork 7 is rotated through the lever, which

disconnects coupling halves 3 and 5. Occur d closing the coupling halves 2 and 6 of the left arm. After coupling the coupling half 2 and 6, the left rotation of the spike-mount 11 begins, the tool is unscrewed and the part is moved back along with the chuck and the movable sleeve. When the threaded part of the part comes out of engagement with the cutting tool, under the action of the spring 18, the movable sleeve with the part fixed in the chuck moves to the ring 19. The outer rings of the cams, abutting the ring surface 19, rotate around their axes and release the part. At this moment, the stop 15 turns off the microswitch 17, under the action of the spring 9, the plug 7 switches the couplings, the right rotation of the spindle begins.

Form

and 3 about about r and e and

A device for cutting threads installed with the possibility of reversal and strumeite, including a mechanism for feeding the part to the tool, located in the housing, which is, in order to simplify the design, the mechanism for feeding the part to the tool is rigidly designed. secured in the housing, enclosing the tool of the cup, inside which the axle jCHHan sleeve is placed with the possibility of axial movement, carrying at its end a slider mounted cams for fixing the part interacting with the mounted in the case of a ring having a colus of 11 th.