JP3785712B2 - Surface roughening device for rotating shaft bonding surface - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface roughening device for roughening a bonding surface when a commutator or the like is bonded to a shaft of a rotating electrical machine.
[0002]
[Prior art]
Conventionally, in a small rotating electric machine, when attaching a commutator or a rotor to a rotating shaft, it is attached by shrink fitting or using an adhesive without using a key. Since the surface is smooth and the bonding effect is low, the outer periphery of the bonding surface of the rotating shaft is roughened by a surface roughening operation in which the surface is ground using a file or sandpaper such as cloth or paper. Such surface roughening work is performed manually using a file or sandpaper, or the shaft is rotated and the sandpaper is pressed against the bonded portion to form a rough surface.
[0003]
[Problems to be solved by the invention]
However, when it is done manually, the shaft surface other than the adhesive surface is often damaged or a uniform rough surface is often not obtained, and when the paper is rotated by rotating the shaft, the work time is shortened. Since the scratches on the rough surface are formed only in the circumferential direction , there is a drawback that the adhesive strength in the rotational direction is weak.
[0004]
[Means for Solving the Problems]
The present invention comprises a shuttle base that reciprocates along a guide rail, and a pair of holding rollers provided on the shuttle base with an axial center parallel to the moving direction and provided with an axial recess, and at least one of the holding rollers. A belt-shaped sandpaper with the polishing surface outside is straddled across the recess, the adhesive surface of the rotary shaft is pressed through this sandpaper, and the rotary shaft is held so that it can move only in the rotational direction, and the shuttle The table is reciprocated according to the axial width of the bonding surface, and the rotating shaft is rotated at a low speed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
For this purpose, a shuttle base that reciprocates along the guide rail and a crank mechanism that reciprocates the shuttle base are provided, and the shuttle base is provided with a pair of holding rollers provided with an axis parallel to the moving direction. a concave portion is provided in the axial direction, pressed against the at least one holding roller, wound around a strip of sandpaper polished surface and outwardly across the recess, the rotary shaft on the holding roller, an adhesive surface on the sandpaper Thus, the rotary shaft is rotated at a low speed while the shuttle base is reciprocated according to the width of the bonding surface by the crank mechanism.
Incidentally, the crank mechanism is provided with pivotal lifting pins that will be fixed by the position adjustment in the direction of movement provided on the shuttle table, a crank arm for connecting the pivotal lifting pin which is located adjusted in the radial direction of the rotary drive plate In addition, the alignment of the shuttle base and the adhesive surface, and the width of surface roughening can be adjusted .
[0006]
【Example】
The present invention will be described below with reference to embodiments shown in the drawings.
1 is a base, 2 is a shaft receiver provided on one side of the base, 3 is a guide rail provided on the base, and 4 is a shuttle base that moves along the guide rail on the opposite side of the shaft receiver 2 and is perpendicular to the moving direction. A support plate 5 having a directional surface is provided. Reference numerals 6 and 7 denote holding rollers provided with a shaft center parallel to the moving direction with a notch 8 for inserting a rotating shaft in the upper part of the support plate 5, and 9 an intermediate roller attached to the lower part of the notch 8, Reference numerals 10 and 11 denote guide rollers provided below the support plate 5.
Reference numeral 12 denotes a pivot pin fixed to the shuttle base 4 so that the mounting position can be adjusted by engaging with the groove 13 in the moving direction of the shuttle base 4, and 14 is attached to the shaft of the motor 15 provided on the base 1. A rotating drive plate 16 that rotates, a pivot pin 16 that engages with a slot 17 in the radial direction of the rotary drive plate so that the mounting position can be adjusted, and a first crank arm 18 that has one end connected to the pivot pin 16. , 19 is a second crank arm that is rotatably supported by the support pin 20 of the base 1, one end is connected to the pivot pin 12, and the other end is connected to the first crank arm 18 by the pivot pin 21. The amount of movement of the pivot pin 16 is reduced, and the pivot pin 12 is moved.
Reference numerals 22 and 23 are stoppers provided at both ends of the base 1, and are provided with pressing pieces 24 and 25. One stopper 22 pushes the pressing piece 24 with a spring 26. Reference numeral 27 denotes a holding roller 6 via a guide roller 10 and a belt-shaped cloth or paper sandpaper which is wound around the holding roller 7 from the holding roller 6 via an intermediate roller 9 and pulled out from the guide roller 11. The surface is wound around the outside of the holding rollers 6 and 7. A concave portion 28 is provided in the holding roller 6, 7 in the axial direction, and the sandpaper 27 is wound around the concave portion.
Reference numeral 30 denotes a rotating shaft to be processed, and reference numeral 31 denotes an adhesive surface to which a commutator is attached.
[0007]
The width in the axial direction of the bonding surface 31 for roughening the surface of the rotary shaft 30 is adjusted in advance at the mounting position of the pivot pin 16 of the rotary drive plate 14, and the position relative to the bonding surface 13 of the shuttle base 4 is pivoted. The holding rollers 6 and 7 are adjusted so as to be positioned on the bonding surface 31 according to the mounting position of the pin 12.
When the rotary shaft 30 is placed on the shaft receiver 2 and the holding rollers 6 and 7 and positioned so as not to move in the axial direction by the stoppers 22 and 23 and the motor 15 is rotated, the first crank is driven by the rotation of the rotary drive plate 14. The shuttle base 4 reciprocates along the guide rail 3 according to the difference between the width of the adhesive surface 31 and the width of the sandpaper 27 via the arm 18 and the second crank arm 19. For this reason, the sandpaper 27 wound around the holding rollers 6 and 7 is slid in the axial direction while being pressed against the adhesive surface 31 on both sides of the recess 28 by the weight of the rotary shaft, and is axially moved to the adhesive surface 31. The surface of the adhesive surface 31 is roughened within one rotation by rotating the rotating shaft 30 at a low speed.
If the surface roughening is insufficient with one rotation, it may be rotated continuously.
[0008]
The rotating shaft 30 may be rotated manually, or the stopper 22 may be rotated at a low speed instead of the rotating chuck. In this case, the shaft receiver 2 can be omitted. The sandpaper 27 is sent intermittently or continuously at a low speed by a winding device (not shown).
The sandpaper 27 may be hung on at least one of the holding rollers 6 and 7, but if hung on both, the surface is roughened on both sides of the shaft at the same time, which is efficient.
[0009]
【The invention's effect】
As described above, the present invention attaches a shuttle base that reciprocates along a guide rail, and a holding roller that is provided on the shuttle base with an axial center parallel to the moving direction and that has an axial recess, and the holding roller is ground. The adhesive surface of the rotating shaft is pressed and held via a belt-shaped sandpaper with the surface outside, and the shuttle base is moved according to the axial width of the adhesive surface, and the rotating shaft is rotated at a low speed. Therefore, the holding roller can be brought into strong contact with the adhesive surface of the rotating shaft at two locations on both sides of the concave portion to press the sandpaper against the adhesive surface, and the surface roughening operation can be efficiently and effectively performed. In addition to the scratches in the circumferential direction due to the rotation of the rotating shaft, the shuttle surface is reciprocated to scratch the adhesive surface in the axial direction, increasing the adhesive strength in the rotational direction, ensuring the attachment of the commutator, etc. The surface of the rotating shaft is not damaged. Further, since the rotating shaft is rotated at a low speed during the operation, the unevenness in the circumferential direction can be eliminated and uniform surface roughening can be performed.
Further, the shuttle table is moved back and forth by a crank arm that connects a pivot pin whose position is adjusted in the direction of movement of the shuttle table and a pivot pin whose position is adjusted in the radial direction of the rotary drive plate. The width in the axial direction and the surface roughening position can be easily and reliably adjusted to the bonding surface position of the rotating shaft .
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a side sectional view taken along line AA in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Shaft support 3 Guide rail 4 Shuttle stand 5 Support plate 6, 7 Holding roller 8 Notch 9 Intermediate roller 10, 11 Guide roller 12 Pivoting pin 13 Groove 14 Rotation drive plate 15 Motor 16 Pivoting pin 17 Long hole 18 First crank arm 19 Second crank arm 20 Support pin 21 Pivoting pins 22, 23 Stopper 24, 25 Pressing piece 26 Spring 27 Sand paper 28 Recess 30 Rotating shaft 31 Adhesive surface

Claims (2)

A shuttle base that reciprocates along the guide rail and a pair of holding rollers provided with a recess in the mounting axis direction with an axis parallel to the moving direction are provided on the shuttle base, and at least one of the holding rollers straddles the recess. The belt-shaped sandpaper with the polishing surface on the outside is hung around, the adhesive surface of the rotating shaft is pressed onto the holding roller via the sandpaper , and the rotating shaft is held so that it can move only in the rotation direction, A surface roughening device for a rotating shaft bonding surface, wherein the shuttle base is reciprocated according to the axial width of the bonding surface and the rotating shaft is rotated at a low speed.   The rotating shaft bonding surface according to claim 1, wherein the shuttle base is reciprocally moved by a crank arm that connects a pivot pin whose position is adjusted in the movement direction of the shuttle stage and a pivot pin whose position is adjusted in the radial direction of the rotary drive plate. Surface roughening equipment

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