SU20919A1 - Nut cutting machine - Google Patents

Description

The proposed cutting machine is related to those in which the change in the direction of rotation of the spindle is due to its effect on the cam clutch alternately coupling the spindle with bevel gears rotating in different directions and at different speeds.

The nut-cutting machine shown in the drawing in general form consists of a frame carrying spindle 3 with a chuck 4 for the tap; rotating bevel gears 24 and 25 of the machine, respectively, are coupled with gears 22 which are freely mounted on the spindle for its working stroke and 21; The movable cam clutch 23 is connected to the spindle with the help of a key and serves to alternate it with gears 22 or 21.

The cam clutch 23 is placed with, rotatable in the cage. 26, which is located below the switch 9, extends through the bed slot; when the switch 9 is moved downwards into this F), the cutter of the bed enters under the action of the spring 12, the latch 11 with the abutment Y. The upper end of the spindle 3 is open in Shchaib 7 attached to the lever 16, equipped with guide pins 6 and a switch 8 at an inclined hinge under the puck 7 on

The spindle is fitted with a spring 5. At the top of the machine in the bracket 13, there are two-revolving axles, levers 14 and 16: the first one, a trough-open profile below, carrying on one shoulder a small crank lever 17, operated by the handle 18, and on the other arm A weight 15 is assigned to act on a switch 9, and a second, one-arm lever 16 placed inside the first lever 14 is assigned to act through a washer 7 on the spindle.

At the beginning of operation of the machine, the left ends of both levers are pulled down simultaneously using the handle 18, and the lever 14 causes the switch 9 to lower to the position shown in the drawing, when the cam clutch 23 engages the gear 22 and gives the spindle and the tap a working rotation, and the latch 11 will go into the slot of the switch 9 and secure it and the clutch 23 in the working position; the second lever 16, pressing on the washer 7, produces a spindle feed into the hole of the chopped nut. If, at the same time, the tap immediately takes the thread on the nut, then further feed down it and the spindle automatically; if the necessary engagement is not immediately obtained, then by compressing the sliding handles 20 and 19 of the handle 18 and by turning the crank lever 17 ,, the lever 16 disengages from the lever 14 ,,

whereby the left shoulder of the latter under the action of the load 15 rises up, and thus it becomes possible to further push the lever 16 downwards to lower the spindle and tap groove into the nut until the required engagement occurs,

As the entire nut passes by the tap, the spindle 3 is lowered so that the switch 8 presses its end against the stop 10 of the latch 11 and pushes it out of the slot of the switch 9; the latter, under the action of the spring 27, raises and transfers the cam clutch 23 to the coupling with the gear 21, which will give the spindle the opposite opposite to the working rotation and with greater speed. By exiting up tap from

the nuts the spindle is kept in idle position by the spring 5.

The subject of the patent.

A re-spinning machine with a change in the direction of rotation of the spindle due to its focus on the cam coupling, alternately connecting the spindle with conical 1-core, rotating in different directions and at different speeds, characterized by the use of 14 and 16 stems, of which the inner lever 16, when acting on The crank lever 17, which is rotated by means of the handles 20 and 19, serves to bring the machine tool to the cut hole at the start of operation.