SU29099A1 - Stud making machine - Google Patents

Description

Stud-making machines are known, with continuous feed of the bar by the rollers and cut-off cutters moving along the axis together with the bar being cut.

In the proposed machine. Screws that continuously rotate around the machine axis and receive, for the purpose of axial movement of the cartridge with cutting cutters, are applied periodic rotation when coupling using clutches and levers of gears that are freely mounted on them with fixed gears for forward and reverse movement of the cartridge.

In FIG. 1 shows a longitudinal section of the machine; FIG. 2, 2 view, in two projections, of a cam ring; FIG. 3-stud; FIG. 4, 4 levers with rollers under which the cam of a cam ring is applied; FIG. 5 is a front view of the cartridge; FIG. 6, 6, spindle in three projects; FIG. 7 is a side view of the rollers used to continuously feed the wire.

The proposed stud making machine is provided with a rotating spindle 33 (Figs. 1 and 6), in which the dies are fastened, and a cartridge for cutting and cutting tools, which receive rotational and axial movement. The movement of the cartridge 4 (Fig. 5) is performed by screwing in (or turning out) the screws 6, which are rotated around their axes with the help of the planetary gears 9 and the fixed gears 8 and 30. The gears 9, which are free to fit in pairs on the screws b, receive the clutch with the latter using JO joints. The clutch couplings with the right gears 9 correspond to the reverse movement of the cartridge 4, and the clutch with the left-forward movement. Coupling of JO joints with gears 9 occurs automatically by means of lever gear J3-34 and stop nuts 32. Radial movements of slides / with cutters 24 (Fig. 5) occur with the help of ratchet engagement 5-5, cam rings 2 of which receive rotation from gears 3 and 18.

Due to these tools, the cutting tools obtain axial movement at the speed of axial movement of the bar in the threaded chuck and radial movement for cutting.

The bar feed is carried out continuously by means of rotating rollers 27 (Fig. 7).

The stepped pulley 75 rotates the spindle 33 at a speed set by the tuner using one of the three pulley steps depending on the size of the thread being cut.

If clutch 10 is engaged with gears running around the internal gear of gear 8, then cartridge 4 moves forward; when coupling the clutch W with gears running along gear 30, the cartridge 4 receives a reverse movement.

Switching the clutches is done by pushing the lever 7J onto the plate that connects both shift forks 72. When the lever is pressed in one direction or the other, the clutch acting at this moment is released, the tips of the tails on the spring 7 and by further pressing of the lever 13 by means of the springs 7 are thrown onto the clutch in the opposite direction. The stroke length of the upper chuck depends on the required Length of the cut stud and is determined by the installation position of the two stop nuts 32 (front and rear) on the lever 13.

Gear 4 is placed on cartridge 4; the latter has an independent rotation on the balls 28 around the cartridge; Cam rings 2 are screwed onto gear B on both sides (Fig. 2).

The gear 5 receives movement from the drive gear 76, and rotates more slowly than the chuck, whereby the cam of the ring 2 is guided under the rollers of the levers 5 (FIG. 4) and the latter press the calipers 7 with the cutters 24, as a result of which the studs 31 (Fig. 3).

The material does not rotate, but continuously moves by the rollers 27, which take it from the coil and simultaneously feed it.

The rollers receive rotation from the common pulley 75 and the feed is adjusted depending on the cutting pitch.

The return speed of the cartridge is the same as the feed rate of the material.

The subject matter of the invention.

A machine for the manufacture of studs, continuous feed of the bar and with cutting cutters moving along the axis together with the cutting pin, characterized by the use of screws b, continuously turning around the axis of the machine and receiving, for axial movement of the cartridge with cutting cutters, periodic rotation around its own axes, coupling using clutches 10 and levers 12-13, the gears 9 that are freely seated on them with fixed gears 8 for forward and 30 for reverse movement of the cartridge. s-fig1-g 4 f fig.