CS245362B1 - Equipment for coiling of spiral winding on control flexible shafts - Google Patents

Description

The invention relates to a device for winding a helical winding onto a control flexible shaft.

In the prior art devices, the helical winding is wound on a flexible shaft core without rolling in a special die, which consists of a split core guide and a pressure plate with an inclined groove for winding the helical winding. The groove angle is always equal to the helix angle. In order to avoid loosening the individual layers and the helical winding of these control shafts when dividing into different lengths, they must be heat treated. This eliminates the internal stresses of the wires that arise when the wires are wound into layers and when the helical winding is wound. However, heat treatment causes a decrease in the strength of the wire, which adversely results in a decrease in the wire resistance to abrasion and in a substantially lower utility value of the axial load of the helical winding of the control flexible shaft.

The above mentioned problems are solved by the device for winding the helical winding on the control flexible shafts according to the invention and the principle is that the rotating flange carrying the guide wire of the helical winding winding unwinding from the loosely stored and braked drum magazine is fixed. a drive shaft, at the end of which a wrapping head is attached. The finished flexible control shaft is pulled from the wrapping head by the drum lift device onto the winding reel. The wrapping head consists of two hinged jaws in which three roller rollers are provided with two parallel grooves spaced apart by the pitch value of the helical winding, the rollers axes lying on a pitch circle which is concentric with the longitudinal axis of the wrapped flexible shaft shaft and their longitudinal axes make angles between 90 ° and 150 ° between them and the value of the axial offset of the guide grooves of the rollers corresponds to:

S · X ^P 1 (2,3) ⁼

360 °

9/10) expressed in

Sum of offset values P |

Example of apparatus where ^P 1 (2 3) ^{= P4 offset of the} guide grooves of the rolling rollers (10/11, 11/9, 9/10) (mm)

S = helical winding pitch (mm / 360 °)

X,. . = values of angles between pairs of rollers (10/11, 11/9, «i‘>)

decimal system up to the pitch value of the helical winding.

for simultaneous winding and rolling of the winding wire of the helical winding onto the control flexible shafts of the present invention is shown in the attached drawing, wherein Fig. 1 is a front view of the winding device assembly and Figs. 2 and 3 show the winding head itself.

The function of the device for the coiling and rolling of the helical winding wire on the control shafts according to the invention is as follows: a wire 5 to form the helical winding / is taken from the drum magazine i into the wrapping head 6, or a flat toothed belt 13 by means of an electric motor 14. The coil 4 s® rotates independently of the flange 1 and is braked by the brake 15. The winding head 5 rotates simultaneously with the flange 11 by the guide pulley 3 and the drive shaft 2. to the groove axis 21 of the rolling rollers 2 «

10, 11 of the wrapping head 11 by means of an elevator device 19 synchronized with the drive shaft drive on the take-up reel 20, so that at one rotation of the wrapping head 6 the control shaft moves along the longitudinal axis by the pitch of the helical winding.

The rolling depth of the wrapping wire 5 is dependent on the adjustment of the contact of the rollers 9, 10 and 11 of the wrapping head 6 to the wrapped core of the control shaft 12 by means of a screw 17.

It can be seen from FIG. 3 that (.alpha., .Alpha.) Is the angle formed by lines extending perpendicularly to the axes of the rollers 10 and 11 (11 and 9, 9 and 10) and passing through the control shaft 12 perpendicular to its axis. .

Said arrangement of the production equipment and production technology makes it possible to wind the helical winding on the control flexible shafts with accuracy and strength corresponding to the operating conditions of the worm-worm gear.

Claims (1)

Apparatus for winding a helical winding on rotating flange control shafts carrying a rotatably mounted idler pulley with a drive shaft with a loose and braked drum magazine for the helical winding wire arranged on the same drive shaft, characterized in that the shaft (2) is provided with a head wrap ( 6) consisting of two pivotable jaws (7, 8), in which three roller rollers (9, 10, 11) are provided, provided with two parallel grooves (21) spaced apart by the pitch of the helical winding pitch, wherein the roller rollers ( 9, 10, 11) lies on a pitch circle which is concentric with the longitudinal axis of the control shaft (12) and their longitudinal axes form angles between them. 90 ° to 150 ° and the value of the axial offset of the guide grooves (21) of the rollers (9, 10, 11) corresponds to: ^s ' ^P 1 (2,3) ⁼ 360 ° where '1 (2,3) * 1 <Ί, = roller guide rail offset (10/11, 11/9, 9/10) (mm) = helical winding pitch (mm / 360 °) = values the angles between the rollers (10/11, 11/9, 9/10) expressed in decimal form. 1 drawing