SU37674A1 - Adaptation to a lathe for making flexible shafts - Google Patents

Description

In the factory, for the manufacture of flexible shafts, machines of the most varied design are used.

According to the invention, it is proposed to make the manufacture of flexible shafts on a lathe using a tool in which a split die is used, provided with a cut-out that serves to pass through it and the hole of the wire bundle dammed onto the core. In the holder of the device are plates that are under the influence of the screw and serve to slow down the passage of the wires. Both the die and the holder are fixed on a common holder, which is moved by hand from the machine along the core of the flexible shaft being manufactured.

In FIG. Figure 1 shows a top view of a lathe equipped with the proposed coiling device for a flexible shaft; FIG. 2- side view of the device; FIG. 3- internal view of the halves of the clamping dies; FIG. 4 is a section of the braking part of the device along the line AB in FIG. one.

The proposed device (Fig. 1) consists of three main parts: pll95)

dies, dies holder and braking device.

The die holder is an elongated bar 1 with widening in the middle and wooden handles 2 at the ends. Dies 3 are fixed on the middle broadened part of the holder, fixed with clamping bar 4 by bolts 5 (Fig. 2). For each layer of the flexible shaft, there are separate dies 3 (Fig. 3) consisting of two halves; in complex; In their form, these halves form inside the hole a of a smaller diameter for the passage of the core of the winding shaft and a hole b of a larger diameter for the passage of the already wound core. A step inside the plate, formed by the difference in diameters a and, serves to evenly feed the plate, and a radial rectangular slot with a connector on the plate serves to pass and level the wire when winding the flexible shaft on the machine.

The braking device (Fig. 4), present in the proposed device, consists of a row of plates 6, placed in the holder 7 and under the influence of the pressure screw 8; the yoke 7 is attached with the possibility of rotation when winding the right or left helix onto the bolt 9 to the holder on the part of the bar 1 between the broadened middle part and the handle 2. To hold the yoke 7B to a certain position, the base of the bezel is provided on the sides with cutouts for the fastening nut the bolt 10. The freezing serves to evenly tension the wire, even if its diameter is uneven, and is carried out by clamping the wires located between the plates 6; this clamp can be adjusted by screw 8.

For winding the flexible shaft onto the spindle of the lathe, a chuck 11 is put, in which one end of the steel wire core is fastened with the dies 12; The other end of the core is secured by a clip 14, which is mounted on a bracket 15 mounted on the machine guides of the machine and which can be adjusted to tension the core. From the four coils of wire standing near the machine, the ends are taken and put into the dies of the 12-cartridge and the machine securing the end of the core. Then, when the spindle is rotated, several turns of wire are wound manually onto the core, after which dies 3 devices are applied to this wound part so that the last turn of the wire rests on the step between the holes a and & dies 3, and the wire itself is discharged through the slot c. In this position, the dies 3 are ignited by the presser bar 4 by means of bolts 5.

The wire to be rolled is laid between the plates 6 of the braking device, screwed down by the screw 8.

After starting the machine, the holder of the fixture is held by the handles 2, and the wire, the passage through the braking device, the rectangular slot from the die 3, abuts against the ledge between holes a and 6 and wound onto the core while simultaneously moving the entire fixture.

After winding one layer of wire, the core is given a few turns in the opposite direction, whereby the tension of the coils will loosen, and the core will be released from the clamp by the wound wire. The second layer of the left turn is wound on the first wire layer; the spindle of the machine rotates in the opposite direction, the plates 3 are changed in the holder and, besides, the brake device turns on the other side of the holder.

After winding the wires onto all layers of the flexible shaft, the core is released from the clamping dies 12 of the chuck 11 and the clamping 14 of the stand 15 of the machine and is freely removed from the finished flexible shaft.

The subject matter of the invention.

Adaptation to a lathe for the manufacture of flexible shafts, characterized by the use of a detachable die 3, provided with a notch, in order to pass through it a bundle of wires, braked by means of plates 6, which are under the influence of the screw 8 and located in the holder 7, such as dies 3 and the holder 7 are mounted on a common holder moving along the axis of the manufactured flexible shaft during operation of the machine. to the author's testimony of I. L. In the logo and G. Ya. Alman Sh 37674

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