JPS602053A - Commutator machining device of rotary electric machine - Google Patents

Abstract

PURPOSE:To efficiently remove burr or welding draw-down by vertically rotatably supporting a commutator of a rotary electric machine to a frame, and moving a machining device in the prescribed direction to the commutator by a signal from a detector mounted on the frame. CONSTITUTION:A trestle 3 is secured by posts (not shown) to a base 1, and slot machining devices 4, 5 are mounted. A motor 7 and a reduction gear 8 are provided at pits 6 formed at the lower portions of the base 1, and a shaft 10 is rotatably held by a chuck 8 directly coupled to the gear 8. An armature 51 having a commutator 50 is rotatably supported to the shaft 10. A position detector (not shown) such as a photocoupler is mounted on the trestle 3 to detect the position of the commutator, and controls the positions of the devices 4, 5 in response to the output. In this manner, the machining of the slot of the commutator 50 and the removal of the barrier welding draw-down can be automatically executed, thereby efficiently manufacturing a rotary electric machine.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a rotating electric machine, and more particularly to a processing device for a groove portion of a commutator.

[Technical background of the invention and its problems] Conventionally, for example, rotating electric machines'! When manufacturing the Ii machine, this intermediate process involves turning the commutator and welding the armature coil and commutator pieces, but this work can cause turning burrs, welding sag, and adhesion of foreign matter. Therefore, this causes contact conduction between adjacent commutator pieces, which interferes with the withstand voltage test.

Therefore, it is necessary to remove the turning burrs, welding sag, and foreign matter, but this removal work has been carried out manually using tools such as knives and punch blades.

However, since the number of commutator pieces is large (approximately 130 to 260), it takes a long time to manually remove them, and the simple work is repeated, which is labor-intensive and cannot be expected to improve efficiency. It becomes a bottleneck in the entire production process,
This improvement was long-awaited.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned needs, and an object of the present invention is to provide a commutator machining device for a rotating electrical machine that reduces manual labor and improves work efficiency.

[Summary of the invention]

The present invention is characterized in that a commutator of a rotating electrical machine is held rotatably vertically, and a processing tool is provided that moves in a predetermined direction in response to a detection signal from a processing section, so that processing work is automatically performed. It is.

Examples of the invention] An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1, 2, and 3, reference numeral 1 indicates a base, and a pedestal 3 is fixed to this base 1 via a support 2, and a groove machining device 4.5, the details of which will be described later, is installed on this pedestal 31. Each is attached. A pit 6 is provided at the bottom of the base 1, and a motor 7, a reducer 8 directly connected to the motor 7, and a chuck 9 directly connected to the reducer iA8 are attached to the pit 6. On the other hand, a bridge 10 is fixed to the support column 2, and a rotation center 11 is attached to this bridge 10.

Next, details of the groove processing devices 4 and 5 will be explained.

First, the groove machining device 4 is for machining the welded part between the commutator piece and the armature coil.
With the unit heath fixed through the support 14,
The guide shaft 16 is supported horizontally via the base 13R: supports t15a and 15b.

This guide shaft 16 has a bracket 17 and a feed screw 18.
It is supported so that it can move freely in the horizontal direction. A slide pace 19 is supported by the bracket 17 so as to be movable in the vertical direction by a feed screw 20. A guide shaft 21 and a cylinder 22 are attached to the slide base 19, and a base 23 is attached to the guide shaft 21 and the cylinder 22 so as to be movable in the vertical direction. A motor 24 is attached to the upper frame 23a of the base 23, and a crank plate 25 is fixed to this rotating shaft, and a tool 27 having a saw blade-like cutting edge is supported via the crank plate 25 pin 25a1 connecting rod 26. A frame 28 is connected.

Note that the reference numeral 29 in the figure is a well-known photoelectric detector.

Next, the groove machining device 5 is used to remove turning burrs from the grooves of the commutator. A guide 33 is attached to the support column 32 by a feed screw 34 so as to be movable in the vertical direction. The guide 33 has a slide shaft 35 that can be slid horizontally.
is attached, and a base 36 is attached to the end of this slide shaft 35.
is fixed. Cylinders 39a and 39? are connected to this base 36 via a vertically movable slide base 37 and a frame member 38. is installed. A base 4o is fixed to the slide base 37, and a motor 41 and a support frame 42 are attached to this base 40.

A shaft 44 is rotatably attached to the support frame 42 via bearings 43a and 43b. This shaft 44 has a boo IJ 45a at one end and a wire wheel brush 4 at the other end.
6 is attached, and a belt 47 is stretched between this boolean J45a and a boolean IJ45b attached to the rotating shaft of the motor 41. Note that the support frame 42 has a shaft 48.
is attached, and a wire wheel brush 49 is attached so as to face the wire wheel brush 46. Further, the piston rods of the cylinders 39a and 39b are connected to the base 40.

Next, the operation of the above configuration will be explained.

First, the workpiece shown in FIG. 7, the armature 51 with the commutator 50 incorporated therein, is vertically aligned with the rotation center 11 and the chuck 9 so that the commutator 50 is at the top, as shown in FIG. to hold. At this time, a previously prepared temporary shaft (Y) is used as appropriate depending on the axial length of the armature 51.

Next, when grooving the welded portion 52 between the commutator piece 50a and the armature coil 51a of the commutator 50 shown in FIG.
A groove machining device 4 shown in FIG. 4 is used.

In this case, the -1 feed screws 18 and 20 are used to adjust the relative position between the welding section 52, which is the processing section, and the tool 27 at a predetermined position. After that, the motor 24 is driven, and the crank 25 and connecting rod 2 are
The tool 27 is linearly reciprocated via the motor 6, and the motor 8 is driven to rotate the armature 51 at a low speed. At the same time, the photoelectric detector 29 detects the groove 5 of the commutator 50 shown in FIG. 9(a).
0b is detected and the rotation of the armature 51 is stopped. When the positioning of the groove is completed in this way, the base 23 is lowered by the cylinder 22, and the tool 27, which has already been linearly reciprocated in the groove 50C on the welding part 52 side shown in FIG. The attached foreign matter 52a is cut and removed. When this tool 27 makes a predetermined cut, the base 23 is raised by the cylinder 22 and returned to its original position.

This completes the machining for one groove 50C.

Next, when forming the grooves on the outer peripheral surface 50d of the commutator 50,
A groove machining device 5 shown in FIGS. 5 and 6 is used. In this case, the slide shaft 35 and the feed screw 34 are adjusted so that the gap between the commutator surface 50d, which is the processed part, and the wire wheel brushes 46 and 49 is set to a predetermined value. After this Morph 41
to rotate the wire wheel brush 46. At the same time, the base 40 is moved up and down by the cylinders 39a and 39b, and the wire wheel brush 46 is rotated.
The wire wheel brush 49 remains non-rotating and the commutator surface 50
d to remove turning burrs 53 on the commutator piece 50a shown in FIG.

Note that the groove machining devices 4 and 5 described above are driven simultaneously.

[Effects of the Invention] Since the present invention is configured as described above, welding sag protruding from the grooves between adjacent commutator pieces, foreign matter attached, turning burrs, etc. are automatically removed. Compared to manual removal, work efficiency can be greatly improved and work time can be shortened.

[Brief explanation of the drawing]

Figure 3 is a plan view taken in the direction of the arrow ■ in Figure 1, Figure 4 is a sectional view taken along the line ■-■ in Figure 3 in the direction of the arrow, and Figure 5
The figure is a cross-sectional view taken along the line V-V in Figure 3 and seen in the direction of the arrow.
Fig. 6 is a plan view seen in the direction of the arrow ■ in Fig. 5, Fig. 7 is a front view of the armature related to the present invention, and Fig. 8 is an enlarged view of a part of the commutator related to the present invention. An explanatory diagram shown in FIG. 9(a)
(b) is an explanatory diagram showing the effect of the present invention. 1... Base 3... Frame 4.5... Groove work #27... Tool 29... Photoelectric detector 46.49... Wire wheel 50...
Commutator brush 51...armature 50a...commutator pieces 50b, 50
c... Mizo (7317) Agent Patent attorney Kensuke Chika (and 1 other person) - 9A [Figure 3 Figure 5 Figure 6 Figure 7 Figure 8 ↓ Figure 9 C, b) Mouth

Claims (1)

[Claims] A frame body that vertically and rotatably holds a commutator of a rotating electrical machine;
A commutator machining device for a rotary electric machine comprising a detection device attached to the frame to detect a workpiece, and a processing tool attached to the frame and moved in a predetermined direction by a signal from the detection device.