RU1830300C - Method of coiling small-scale helical cylindrical springs - Google Patents

Abstract

Usage: the invention relates to the field of instrumentation, in particular to the winding of springs, and allows to improve quality by providing high accuracy, the diameter of the spring. Essence: the method is carried out as follows: after attaching to the spindle a rod on which the spring is to be wound, and a wire is inserted into the socket with a central cylindrical hole slightly larger than the outer diameter of the spring and an eccentric groove, the width of the wire diameter, thus that the winding is produced in the cylindrical hole of the socket where the rod is located, and the winding force from the spring is transmitted to the socket through the contact area between the spring and the surface of the hole. 8 ill.

Description

The invention relates to the field of instrumentation and can be used in the manufacture of small-sized springs from various materials with an external spring diameter not exceeding 0.8 mm.

In FIG. 1 shows a device for winding springs of the proposed method; figure 2 - section aa in figure 1; Figures 3-8 show, in two projections, the steps of attaching the wire before starting winding.

The free (initial) end of the wire 1 is fixed with a screw 2, clamped with a washer 3 with a spring 4, the rod 5. on which the spring is wound, is fixed with a screw 2 in the spindle 6 mounted on the support 7 and driven by the drive 8. The rod 5 by itself it turns out to be non-rigid, since when winding springs with an outer diameter of 0.5 mm from 0.12 mm wire

the diameter of the shaft is less than 0.25 mm, on which it is not possible to wind a spring freely, for example 10 mm or more. The cylindrical socket 9 is fixedly mounted on the stand 10 by a screw 11.

Spring winding is carried out in the following sequence.

The end of wire 1 and the rod 5 are fastened with screw 2. The wire is drawn to the left along the spindle 6 (which is shown in two projections in Figs. 3, 4). Then the spindle rotates 90 ° clockwise (if you look at the drive on the right side), the wire, bending around the end of the spindle, is brought into contact with the rod 5. After that, the socket 9, through the hole on the stand 10, is fed to the right until it touches the wire and spindle, ensuring that wire 1 enters the eccentric groove 12, and in this position

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it is fixed in the stationary state by the screw 11, and the spring is wound in the central hole 13 of the socket 9, and the force of the winding from the spring through the contact zone 14 is transferred to the socket. The spring is wound from right to left. The eccentric groove on the socket 9 has a length greater than the length of the winding spring and the cantilever part of the rod 5.

Using the proposed method for winding small-sized spiral coil springs provides the convenience of winding, high accuracy and quality of the spring, making it possible to wind the spring onto a thin rod regardless of its stiffness.

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Claims (1)

SUMMARY OF THE INVENTION A method for winding small-sized coil cylindrical springs, comprising securing a wire to a mandrel bar and subsequently forming the spring by winding the wire onto a mandrel bar rotated by a spindle, located in the center hole of the winding socket, into which the wire is fed through an eccentric groove to the size of the wire, characterized in that, in order to improve quality by ensuring high accuracy of the diameter of the spring, the formation of the spring is carried out using of a tight rod and the inner edges of the eccentric groove and the diameter of the socket navi- novel developing over the entire length provides clearance with the outer diameter of the spring. / 8 2 ifBUrh Figz 5 h End of the wire Ф№.Ц / f / Ln Shgb