SU22432A1 - Screw cutting machine - Google Patents

Description

The invention relates to a machine equipped with a drum for supplying to a mill, with the aim of slotting screws cut on a machine from a bar material, clamped by a chuck with a clutch acting on the levers of the chuck. In the proposed machine, a brake is applied that acts from the cam drum by means of lever transmission and is intended to brake the cartridge when cutting the screw and freeing the cartridge for rotation at the end of the cutting.

In FIG. 1 is a front view of the machine; FIG. 2-top view of the machine; FIG. 3 is a side view of it; FIG. 4 is a sectional view of the machine along ab in FIG. one; FIG. 5-g view of the thread-cutting cartridge in partial section.

In the bearings of the machine bed 1, a cartridge 2 connected to the drive is installed, equipped with a handle 3 which is moved by a handle 3 with a clutch 4, acting on the levers located in the cartridge 2, by means of which the bar to be inserted into the cartridge is clamped. On the machine stand 1, there is a stand 5 with a brake 10 1 with bearings for the thread-cutting cartridge with dies 7. The brake is connected to a system of levers 12, 13, 14, of which the lever 12 is equipped with a roller 8 interacting with cams 9 placed on the inner surface

drum 11, fastened to a worm gear 15, receiving rotation from a screw 16 on an axis 17 located along the machine, connected by a belt drive with a chuck 2. In the bed 1 guides there is a transverse support 18, pressed by spring 19 and connected to a pull 20, at the end of which roller 21 is placed, which interacts with cams 22 located on the outer surface of drum I. Inside the frame 1 under chuck 6 there is a chute 23, the end of which is located above drum 24 connected by worm gears 25, 26, 27, 28 with axis 17 and sleep radial cuts, in the plane of which a milling cutter 29 is mounted on the end of the axis 17.

When using the machine, a bar is inserted into the chuck 2, clamped manually in the chuck with the handle 3, and the machine is driven. When threading at the end of the bar embedded in the cartridge 2, the brake 10 under the action of the lever gear 12,13,14, controlled by the cams 9 of the drum 11, brakes the thread-cutting cartridge 6 with dies, as a result of which the bar rotating relative to the fixed dies is screwed into them on it is carved. At the end of the cut, the length of which is determined by the profile

The reel cams 9, last, acting on the brake 10 through lever transmission 12, 13, 14, release the cartridge for rotation, as a result of which the threading on the rod, which rotates along with the dies, stops. The cams 22 of the reel 11, acting on the th gu 20, force the caliper 18 to move, on which is fixed a cutter carrying out a cut of the cut screw. The screws cut by the cutter of the supor 18, falling across the chute 23 into the slots of the rotating drum 24, are splinted by a cutter 29 rotating with the axis 17.

The subject matter of the invention.

A screw cutting machine equipped with a chuck for clamping a rod with a coupling acting on the levers and a drum with radial cuts for supplying screws to the cutter for splicing, characterized by the use of a brake 10, which serves to periodically for the purpose of cutting, to brake by means of a rotating cam drum And and a lever transmission of the thread-cutting pahron and releasing it for rotation at the end of the screw cutting.

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