JPS5834724A - Device for assembly of double-row ball bearings - Google Patents

Abstract

PURPOSE:To have a sure and precise fitting of balls in the rings by arranging the inner and outer rings in eccentric locations and by displacing a crescent jig, which is used to insert balls in the specified number in the upper and lower grooves, up to the space where no balls are set. CONSTITUTION:Outer 31 and inner 32 rings of a ball bearing are placed on a support table 1 with the inner ring 32 in eccentrically displaced state, and balls in the specified number to be fitted in the lower groove of the bearing are placed on a crescent projection 11 of the support table 1. On the support block 40 born by an eccentrically displacing device 5 operated vertically by a cylinder 52, an arm 61 equipped with a ball holding crescent member 6 is installed in such a way as revolved by a motor 7, and this ball holding member 6 is inserted in a gap between the inner and outer rings 32, 31 to over which feed the specified number of balls to be inserted in the upper groove from a feed pipe 10. The guide member 4 inserted in the inner ring is displaced eccentrically while pressing the outer ring 31 by a pressure device 9, and drawn up upon rotation of the arm 61.

Description

Detailed Description of the Invention The present invention relates to a device for assembling a double-row ball bearing by inserting a specified number of balls into the double-row grooves. It is an effective device for large objects.

Conventionally, assembling devices for double row ball bearings have been described, for example, in Japanese Utility Model Application Publication No. 56-44224.
The device described in this publication is useful for double-row ball bearings with a relatively small groove center distance P as shown in Figure 1, but in this type of device, the groove center distance P For large bearings, the inner and outer rings are offset relative to each other, and after inserting the specified number of balls for two rows of grooves into the gap formed between the inner and outer rings, the centers of the inner and outer rings are Even if the inner or outer ring is displaced to match,
Although the ball fits into the gap between the lower grooves, it may be difficult to fit into the upper gap, and it has been impossible to assemble balls with a particularly large distance between the groove centers.

The device of this invention has almost no relation to the distance between the groove centers, and can be used to assemble ball bearings with a particularly large distance between the groove centers. After inserting a specified number of balls into the gap between the groove and the bay on the lower side of the bearing, the arc length is shorter than the circumferential length of the unoccupied part of the ball after the construction of the double row ball bearing. Place a crescent-shaped ball bearing member with a cylindrical shape in the above-mentioned gap, and after inserting the specified number of nine balls into the gap between the upper groove and the bay of the double row ball bearing, place the balls on the ball bearing member. With the centers of the inner and outer rings of the bearing aligned and the balls held in the gaps between the grooves of the inner and outer rings of the double-row ball bearing, the ball bearing member is rotationally displaced to a space where the balls are not lined up. This is an assembly device for a double row ball bearing, which is characterized in that the bearing is returned upward from this space.

Next, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a support stand provided so as to be able to slide on the main body 2 in a direction perpendicular to the plane of the drawing in FIG. 2 by an appropriate drive mechanism. 3 and a guide portion 12 for positioning the outer ring 31 of the double row ball bearing 3. 4 is the inner ring 3 of the double row ball bearing 3
Inner ring guide member for positioning and displacing 1. p is a displacement device for the inner ring guide member and the ball bearing described below; 6 is a ball leveling device for aligning the heights of the balls during assembly of the double row ball bearing 3; 9 is a double row ball bearing A pressing device for temporarily compressing and deforming the outer ring 31 of
O is a ball supply pipe that supplies balls to the double row ball bearing.

The inner ring guide member 4 described above is a cylindrical member having a flange 42 attached to the lower tip of a shaft 41 indirectly provided on the support block 4o, and the outer diameter of the flange 42 is the same as the outer diameter of the inner ring 32. The outer diameter of the cylindrical portion 43 is approximately the same, and the outer diameter of the cylindrical portion 43 is slightly smaller than the inner ring dimension of the double-row ball bearing, and the lower tip side is slightly tapered as required. A support block 40 that supports the inner ring guide member 4 via a shaft 41, a bearing sleeve, etc. is slidably engaged with the displacement device 5 via two horizontally extending arms 44, and further displaces the inner ring guide member 4. It engages with a horizontal displacement rod 51 provided on the device 5, and moves in the left and right direction (see arrow A) in the figure.
It can be displaced to A sleeve 46 is attached to this support block 40 via a pair of bearings 45, and a rotary arm 62 is attached to the lower end side of this sleeve 46 for attaching a rod 61 that supports the ball support member 6. A gear 72 that meshes with a sliding pulley 71 of a rotational displacement device #7 such as a pulse motor is provided on the upper tip side of the sleeve 46, so that the ball bearing member 6 can be rotationally displaced. It's K. The ball bearing member 6 is a crescent-shaped member, and its arc length is shorter than the circumferential length of the unoccupied portion of the ball after the construction of the double-row ball bearing, and its thickness is determined to improve the strength and the length of the double-row ball bearing 3. It is determined based on the distance between the groove centers, but in cases other than double row ball bearings where the distance between the groove centers is small, only the strength needs to be considered. Also, the width in the diametrical direction is the inner ring of a double row ball bearing! It is determined based on the gap formed between the outer diameter surface and the inner diameter surface of the outer ring 31. The ball leveling device f8 is configured to be able to move vertically in the figure by a drive mechanism such as a fluid cylinder (not shown), and includes a ball leveling part 81 that is curved according to the size of the double row ball bearing. There is. The suppression device 9 is the left supply pipe 10 of the main body 2 in the figure.
It has a moderate inclination so that the ball will fall under its own weight, and a pin-shaped stop bar is provided near the lower tip to prevent the ball from moving, and a plate (material) to prevent the ball from flying out is installed at the tip.
is provided.

Next, the assembly of a double row ball bearing using the above assembly device will be described. In the pre-process, the inner ring holder and outer ring 31 of the double-row ball bearing are placed on the support stand 1 so that their centers are relatively offset, and the gap below the placed double-row ball bearing is As shown in FIG. 3, a specified number of balls are loaded and arranged on the crescent-shaped protrusion ll, and then transferred to a predetermined position in the apparatus. Therefore, the above-mentioned device inserts a specified number of balls between the upper grooves of the double-row ball bearing in the mounted state. The ball bearing member 6, which has been displaced as an inner ring guide with respect to the inner ring 32 of the double row ball bearing, which has been shifted to a predetermined position by the support base 1, descends into the gap formed between the inner ring 32 and the outer ring 31 of the double row ball bearing. . It is necessary to adjust this lowering position in advance so that the balls can be easily lined up in the upper groove. FIG. 4 shows this ball bearing member 6 and the inner ring 32.
Although the relative positions of the outer ring 31 and the outer ring 31 in the horizontal direction are shown, the ball bearing member 6 is in a position that completely covers the specified number of balls that have already been inserted between the lower grooves in the previous step.

Next, the stopper of the ball supply pipe 10 is moved backward, and the specified number of balls that were prevented from descending by the stopper (9) roll inside the pipe 10, and the inner ring blade and outer ring 31 of the double row ball bearing
When the ball bearing member located between the balls falls 6 degrees upward, the outer ring 31 is compressed and deformed by the suppression device 9, and at the same time, the inner ring guide member 4 is displaced to the right in the figure by the displacement device 5. , align the center of the inner ring and the outer ring 31. As the supporting block 40 rises, the ridge moves to the gap position where the balls are not lined up as shown in FIG. The double-row ball bearing with the specified number of balls assembled therein is transferred together with the support base 1 to the equipment for the next process.

The above device is configured to insert balls into the lower groove of the double-row ball bearing in the previous process, but after inserting the balls into the lower groove at the same position, the balls are inserted into the upper groove. It is also possible to do so.

The device of this invention can be used almost regardless of the distance between the centers of the grooves of a double-row ball bearing, and the mechanism of the device is relatively simple. Fig. 2 is a partially vertical front view showing the essential parts of an embodiment of the present invention, and Figs. 3 to 5 are cross-sectional views of the double-row ball bearing in the device shown in Fig. 2. This is a plan view showing the relative positions of the balls, inner ring, outer ring, etc. Figure 3 shows the state immediately after being sent from the next process, and Figure 4 shows the state immediately before the ball bearing is lowered and the balls are charged. FIG. 5 is a view showing the state immediately before the ball support is tightened upward after the ball has been loaded.

Explanation of the symbols 1 is a support base, 3 is a double row ball bearing, 4 is an inner ring guide member, 5 is a displacement device, 6 is a ball bearing member, 7 is a rotational displacement device, 8 is a ball leveling device, 9 is a pressing device, lO is the ball supply pipe Kodera t! T book 7 o ni person 1 yo 7 wall construction, tree 7 (, outside, (-upper ear 1 zohaku 3) letter paper 412I pruning 5 group

Claims (1)

[Claims] In a ball bearing assembly device that relatively deviates the inner and outer rings of a double-row ball bearing and inserts a specified number of balls into the gap between the inner and outer rings formed by this deviation, a crescent moon for ball bearings is used. A support base having a shaped protrusion, an arm configured to move up and down and rotationally displace by a vertical mechanism provided on the device body and a rotational displacement device provided on the support block below, and the inner ring and A crescent-shaped member is supported by a rod attached to the arm so as to be located in a gap with the outer ring, and has an arcuate length shorter than the circumferential length of the unoccupied portion of the ball after the double-row ball bearing is made of earthenware. A ball bearing member, a support block that is attached to a displacement device that engages with the vertical mechanism and is displaced in the horizontal and vertical directions; An assembly device for a double-row ball bearing, which includes an inner ring guide member that relatively displaces the inner ring or the outer ring to align the centers of the inner ring and the outer ring.