SU893356A1 - Die for producing round bars - Google Patents

Description

(54) STAMP FOR THE MANUFACTURE OF ROUND RODS

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j Invention. relates to the processing of metals by pressure, in particular to devices for the manufacture of products with yakatka, and can be used in electrical engineering, instrumentation and other sectors of the national economy for rolling knurling and chamfering on round rods.

Known thread rolling machine containing a slider mounted on it a movable die, and a fixed die 1.

A disadvantage of this device is the impossibility of combining the operations of thread rolling with the chamfering operation, which limits its technological capabilities.

A stamp for the manufacture of round rods is also known, comprising a top plate, a base, a fixed die placed on it, a rail and a movable die having the ability to interact with the rail. In the known stamp, the operations of cutting the workpiece from the rod and rolling the annular grooves 2 are carried out.

A disadvantage of the known stamp is that the operations are performed sequentially.

To transfer the workpiece from one position to another, the stamp is equipped with a grabber feed mechanism, which complicates the construction of the die and reduces reliability. The slats connected directly to the upper part of the stamp complicate the adjustment of, for example, the length of the press stroke. In addition, this stamp does not perform a chamfering operation.

The purpose of the invention is to increase n {productivity and reliability of work.

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The goal is achieved by the fact that a well-known stamp containing an upper staff, a base, a fixed Pillar, a rail and a movable die, having the ability to interact with the rail, are placed on it,

IS is equipped with a chamfering mechanism, implemented in the form of a holder and a cutting element fixed in It, and a synchronization mechanism, made in the form of a gear wheel mounted on the base of the slide,

Claims (2)

20 having the ability to interact with the slide and the movable die, fixed rey-. ki, which is in engagement with the gear wheel, of two pushers fixed on the top of the shaft with the possibility of interaction with the slide and the holder, the base being made with grooves in which the holder is placed. FIG. 1 shows a stamp, a general view; in fig. 2 - the same, side view; in fig. 3 — node 1 in FIG. 2. The stamp has a fixed die 1 fixed on the base 2, a movable rail 3 with a die 4, a fixed rail 5, a slider 6 with a biased wheel 7. The holder 8 with a cutter VDP with the epement 9 has inclined projections that oblique grooves ovsshosh 2. The slider 6 and the holder 8 have, respectively, a spring 10 and 11. The pushers 12 and 13 are rigidly fixed on the top plate 14. The knife 15 is strengthened on the top plate, and the cutting sleeve 16 is fixed in the base 2. The device works as follows. When moving the upper plate 14 down the knife 15 cuts the workpiece from the rod. At the same time, the pushers 12 13 move the slider 6 and the holder 8. The holder 8 and the knife 15 propel the workpiece down. The workpiece falls between the olives and starts to rotate. The toolholder 8, moving about the inclined groove of the base 2, receives a feed movement along the axis of the roll, while the cutting element 9, yutol & In order for the workpiece to be rolled around W), the movable plate 4 must lme moves twice as large as the center,. blanks. This is what happens next. The pusher 12 moves the slider 6. The center of the gear wheel 7 fixed in the slider moves progressively, and the wheel itself, rolling on the fixed rail 5, moves the movable reigsu 3, and hence the die 4, at a distance two times larger than the center of the wheel . And since the pushers 12 and 13 are fixed on one plate 14, the movements of the center of the workpiece and the center of the gear wheel 7 coincide, and the movable die 4 rolls the workpiece along the fixed die I. In the proposed die compared to the known one, the grooves for cutting knurling are performed simultaneously and chamfering at one position, which simplifies the design, increases reliability. DETAILED DESCRIPTION A stamp for making round rods comprising a top plate, a base, a fixed die placed on it, a rail and a movable die having the ability to interact with the rail, characterized in that it is equipped with a mechanism for improving performance and reliability. chamfer, made in the form of a holder and fixed in the holder of the cutting element, and a synchronization mechanism, completed in the form of a set iff on the slide, the gear wheel, smoldering the possibility of interaction and with a slider and a movable die, a fixed rack meshed with a gear wheel, two pushers fixed on the upper pin with the interaction with the slider and the holder, the base being made with grooves in which the holder is placed. Sources of information taken into account in the examination 1. The author's certificate of the USSR N 79350, cl. B 21 N 3/06, 28.02.50. 2. USSR author's certificate number 116428, cl. At 21 O 43/10, 03/28/58 (prototype). /five 2.