JPH0210814A - Method and device for winding on inner surface or cylindrical body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method and apparatus for winding the inner surface of a cylindrical body for forming a winding wire in an annular groove formed on the inner surface of the cylindrical body.

proposed a winding method in which the wire is wound directly in the annular groove inside the wire, and the end treatment of the winding is performed in a series of steps.

Problems to be Solved by the Invention However, with the above configuration, stable coil formation is not possible due to variations in the shape of the annular groove inside the cylinder, variations in the thickness and tension of the wire drawn from the tip of the supply nozzle, etc. had. In view of the above problems, the present invention provides a pressure contact a provided at the rear in the rotational direction of the supply nozzle.
- By forcibly rotating the roller and giving the pressure roller a tapered shape, the feeding of the wire is stabilized,
It is an object of the present invention to provide an aligned winding method that stabilizes coil formation.

Means for Solving the Problems In order to achieve the above object, the present invention includes a step of holding one end of the wire drawn out from the tip of the supply nozzle, and rotating the supply nozzle around one connecting pin at one end of the cylindrical body. a step of lapping the wire rod with a hook pin at a position near the intersection of an axial groove and an annular groove formed to intersect with the annular groove from one end of the cylindrical body; The supply nozzle is rotated along the annular groove, and forcedly rotated simultaneously with the rotation along the annular groove at the rear position of the supply nozzle in the rotation direction, and the wire rod is fed by a roller tapered in the direction of the rotational axis relative to the bottom of the annular groove. The process of supplying and winding the wire into the annular groove by pressing it against the bottom surface of the annular groove, and after winding the wire the required number of times, with the wire being locked by the roller at the fork part, another connecting pin The method is characterized by comprising a step of wrapping the wire rod. Furthermore, an apparatus is provided in which the roller is tapered.

Effects of the present invention With the above-described configuration, the pressure roller is forcibly rotated, and the pressure roller has a tapered shape, thereby stably leading out the wire from the supply nozzle, stabilizing coil formation, and achieving aligned winding. can do.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 9. First, to explain the schematic configuration of the winding device with reference to FIGS. 1 and 2, X and Y tables 2.3 are mounted on one side of the base 1 and are movable in the X direction and in the Y direction orthogonal thereto. A vertically movable Z table 4 is installed in a stacked state, and a winding head 5 is provided on the Z table 4. A chucking table 6 is provided on the other side of the base 1 for gripping a workpiece 10 on which a winding is to be formed. 7 is a wire supply section that supplies the wire 9 to the winding head 5, and 8 is a tension device. As shown in FIG. 3, the workpiece 10 is made of a cylindrical body, and a plurality of annular grooves 11 in which windings are to be formed are formed on the inner surface of the cylindrical body. A pair of connecting pins 13 are provided on each of the protruding portions 12 provided in correspondence with the number of protrusions 12, and a pair of connecting pins 13 are provided on the inner surface of the cylindrical body 10 so as to intersect with the annular groove 11 in accordance with the arrangement position of the connecting pins 13. An axial groove 14 deeper than the annular groove 11 is formed in the annular groove 11 . The winding head 5 includes a supply nozzle 15 that feeds out the wire from the wire supply section 7, a pressure roller 16 that presses the wire 9 to press it against the bottom surface of an annular groove 11 formed in the workpiece, and an end of the wire 9. A holder 17 for holding the wire rod 9 and a cutter 18 for cutting the wire rod 9 are provided. The chucking table 6 includes a chuck member 19 that grips the workpiece 10 and a hook pin 2 that locks the wire within the axial groove 14.
0 is set.

Next, the winding process will be explained based on FIGS. 3 to 11. First, as shown in FIGS. 1 and 3, the tip of the wire 9 fed out from the tip of the supply nozzle 15 is held by the holder 17, and then the supply nozzle 15 is moved to the position of the connection pin 13 as shown by arrow A. Next, as shown in FIG. 4, the wire rod 9 is wrapped by rotating the supply nozzle 15 around the connection pin 13 as shown by the arrow B (-), and then as shown in FIG. The supply nozzle 15 is inserted into the workpiece 10 along the axial groove 14 as shown in FIG. As shown in FIG. 10, the hook pin 20 is inserted into the workpiece 10, and the tip of the supply nozzle 15 locks the wire 9 in the axial groove 14. Annular groove 1
Step back to correspond to 1. Next, Figures 7 and 11
As shown in the figure, the supply nozzle 15 is rotated along the annular groove 11 as shown by the arrow E, and the wire 9 pulled out from the tip as the supply nozzle 15 moves is pressed against the annular groove 11 by the pressure roller 16. By pressing against the bottom surface, a predetermined number of windings are formed within the annular groove 11. At this time, as shown in FIG. 13, the conditions under which the pressure roller 16 rotates along the annular groove 11 while being forced to rotate are shown in equation (1).

(DI-2・d)≦D2・n (1) Dl:
Inner diameter D2 of the annular groove 11: Outer diameter d of the pressure roller 16: Outer diameter n of the wire 9: Number of rotations of the pressure roller 16 when they move together in the annular groove 11. Also, as shown in FIG. When the roller 16 rotates freely and the wire 9 slips, the wire 9 slips into the annular groove 11.
It floats off the bottom of the coil, making it impossible to form a coil.

FIGS. 14 and 15 show an example of a mechanism for forcing the pressure roller 16 to rotate along the annular groove 11. Figure 14 shows the pressure roller 16 and O-ring 21.
The pressure roller 16 is forcibly rotated by the frictional force between the small gear 22 and the large gear 23, as shown in FIG.

As shown in FIG. 19, when the pressure roller 16 is parallel to the rotating shaft direction, even if the first roll of wire 9■ can be pressed against the bottom surface of the annular groove 11 due to variations in the thickness of the wire 9, the second roll It becomes impossible to press the wire rod 9■ in the eye.

On the other hand, if the pressure roller 16 has a tapered shape 16a in the rotation axis direction as shown in FIG. 16, the wire 9 pulled out from the supply nozzle 15 can be pressed against the annular groove 11. Taper 16a of pressure roller 16 at this time
The conditions are as shown in equation (2).

12d/ (2(!-d)l ≧(e-i!) (2)
d: Outer diameter of the wire 9 e: Groove width of the annular groove 11 In addition, since the pressure roller 16 has a taper 16a in the rotational axis direction as shown in FIGS. The wire rod 9 immediately after this can be brought into pressure contact with the bottom surface of the annular groove 11. Thereafter, as shown in FIG. 8, the wire rod 9 is held at the intersection of the annular groove 11 and the axial groove 14 by the pressure roller 16, and the supply nozzle 15 is moved toward the arrow F.
After pulling it out along the axial groove 14, the hook pin 20 and pressure roller 16 are also pulled out.Finally, as shown in FIG. Wrapping is performed by rotating the wire, and by cutting off the excess wire 9 extending from the pair of connecting pins 13 with the cutter 18, the formation of the winding for one annular groove 11, including the end treatment, is completed. Thereafter, windings can be formed in all the annular grooves 10 of the workpiece 10 by forming windings in the sequential annular grooves 11 in the same manner.

Effects of the Invention According to the method for forming a winding on the inner surface of a cylindrical body of the present invention, as described above, it is possible to perform aligned winding that stabilizes the drawing out of the wire from the supply nozzle and also stabilizes the coil formation. Winding wires can be manufactured with high productivity.

[Brief explanation of the drawing]

1 to 11 and 13 to 17 show an embodiment of the present invention, in which FIG. 1 is a perspective view of the main functional members of the winding device, FIG. 2 is an overall perspective view, and FIG. 3 to 9 are perspective views showing each winding process, FIG. 10 is a partially detailed perspective view of the process in FIG. 6, FIG. 11 is a partially detailed perspective view of the process in FIG. 7, and FIG. The figure is an explanatory diagram of a conventional example, FIG. 13 is a partial sectional view, FIGS. 14 and 15 are partial perspective views, and FIGS. 16 and 17.
Figures a, b, and c are partial sectional views, and Figures 18 and 19 are explanatory diagrams of conventional examples. 9...Wire rod, 10...Work, 11.
...Annular groove, 13...Connection pin, 14.
...Axial groove, 15... Supply nozzle, 1
6...pressure roller, 16a...-heat T
-ノ＼ 7...Holder, 20...Hook bi

Claims (2)

[Claims] (1) A process of holding one end of the wire drawn out from the tip of the supply nozzle, a process of rotating the supply nozzle around one connecting pin at one end of the cylindrical body to wrap the wire, and a process of wrapping the wire from one end of the cylindrical body. A process of locking the wire with a hook pin at a position near the intersection of an axial groove formed to intersect with the annular groove and an annular groove, and a process of rotating the supply nozzle along the annular groove and rotating the supply nozzle. At the rear position in the moving direction, the roller is forcibly rotated, the roller presses the wire against the bottom of the annular groove, and the wire is supplied and wound into the annular groove. 1. A method for winding an inner surface of a cylindrical body, the method comprising the step of wrapping the wire around another connecting pin while the wire is held in place. (2) means for holding one end of the wire drawn out from the tip of the supply nozzle; means for wrapping the wire by rotating the supply nozzle around one connecting pin at one end of the cylinder; A means for locking the wire with a hook pin at a position near the intersection of an axial groove formed to intersect with the annular groove, and a means for rotating the supply nozzle along the annular groove. means for supplying and winding the wire into the annular groove by bringing the wire into pressure contact with the bottom of the annular groove using a roller having a taper in the rotational axis direction relative to the bottom of the annular groove at a rear position in the moving direction; A cylindrical body inner surface winding device comprising means for wrapping the wire around another connecting pin while the wire is locked by a roller at the intersection.