SU383502A1 - DEVICE FOR HOT SPRINKLE FROM BAR - Google Patents

Description

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The invention relates to a machine tool industry, in particular, to devices used in metal cutting machines for removing hot-wound springs from mandrels.

A device for hot winding of springs is known, which contains a bar feeding mechanism, a spring winding mechanism and a spring removal mechanism, which are mounted on the frame. The latter is provided with an individual drive and is made in the form of a movable sleeve coaxially aligned with the mandrel with a movable sleeve in the slot of which the free end of the lever is installed, which is mounted while being wound flush with the end of the sleeve and rests under the action of the spring in the supporting coil of the spring when the mandrel is rotated.

However, in the known device, it is impossible to maintain the accuracy of the springs of the springs being removed due to the fact that the sleeve, which is an axial stop of the removal mechanism, is installed before the last not yet cooled coils, besides, the first coils since the beginning of the winding cool down much longer than the last; The pattern of the turns with the mandrel is not evenly distributed over the length of the spring, and the design of such devices is cumbersome and requires an additional number of interchangeable sleeves and stops.

In order to preserve the specified spring pitch in the process of removal from the mandrel and to ensure the possibility of changeover of the removal mechanism to different sizes of the spring in the desired position.

the finished springs are made in the form of a glass with coaxially mounted in it with the possibility of adjusting movement in opposite directions and turning by a given angle from the independent drive

bushings on which the spring retaining strips are mounted.

Fig 1 shows the proposed device; on fng. 2 - the same, side view; in fig. 3 - the mechanism of removal of prul-sin; in fig.

4 is a side view of the spring removal mechanism with the direction of movement of the planks; in fig. 5 is a section along BB in FIG. four; in fig. 6 is a top view showing the attachment of the tooth and the direction of rotation of the slats; on

FIG. 7 is a spring removal circuit.

The device (see Figs. 1 and 2) is mounted on a lathe 1. It consists of a spring mechanism 2 and a spring removal mechanism 3. The spring removal mechanism is a bowl 4, from which the strips 5 and 6 protrude, which remove the spring.

The device in assembled form is installed on turning.

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The sleeves 7 and 8 are mounted into the bore 4, which have longitudinal grooves 9 (see Fig. 3), which make it possible to move the bar 5 n 6 in the axial direction (down and up) when adjusting the removal of the required spring diameter. In addition, the sleeves 7 and S can rotate around an axis relative to each other from separate screws Yu, thereby rotating the strips 5 and 5 when adjusted for the step of the spring to be removed, set them parallel to the spring coil.

The adjustment of the strips 5 to 6 to remove the spring of a certain diameter is made by rotating the screw // having the left and right threads.

The tooth 12 (see Fig. 6) is screwed to the ends of the top or bar depending on the direction of the spring helix (left or right) and serves to hold the spring from turning it during removal when the mandrel is rotating.

The device for hot winding of the springs operates as follows.

Depending on the diameter of the coiled spring, we make the adjustment of the strips 5 and 6, bringing them closer together or removed from each other by turning the screw 11 (see Fig. 3 and 4).

Depending on the spring of the spring, we rotate the holes 5 and 6 relative to each other at the required angle by rotating the screws W, as a result of which the strips 4 and 5 are installed parallel to the coil of the spring (see Fig. 6).

Depending on the direction of the helix of the spring produced (left or right), we attach the tooth 12 to the lower or upper bar.

This completes the adjustment of the adaptation to work.

During spring coiling, the removal mechanism is in the retracted position.

After the winding of the spring is finished, the removal mechanism is supplied to the mandrel so that the initial turn of the spring with the end of the rod touches the tooth 12 (see Fig. 7).

The spring is removed when the mandrel is rotating and the mechanism is moved to remove the spring in the axial direction of the mandrel by accelerating the slide.

Subject invention

A device for hot winding of springs from a rod, comprising a bar feed mechanism, a spring winding mechanism with a mandrel and a ready spring removal mechanism mounted on the frame, characterized in that, in order to maintain a predetermined spring pitch during the removal process from the mandrel and to enable readjustment of the removal mechanism on various sizes of springs, the spring removal mechanism is made in the form of a cup with coaxially mounted in it with the possibility of adjusting movement in opposite directions and turning to a predetermined by singly drive bushings, which are mounted on the retaining spring plate.

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