RU170332U1 - DEVICE FOR FILLING BALLS - Google Patents

Abstract

The utility model relates to the field of mechanical engineering and can be used in the bearing industry, namely when assembling thrust and angular contact bearings. The device comprises a hopper coaxially located with the bearing ring and having a tapered inner collar and a manipulator with a groove for placing the balls mounted with a constant clearance relative to the inner surface of the hopper. On the conical surface of the shoulder, partitions are installed, the number of which is equal to the number of balls poured into the bearing ring and with a thickness equal to where t is the thickness of the partitions, D is the diameter of the cylindrical surface of the manipulator, d is the diameter of the balls, δ is the gap between the adjacent partitions and the ball, z is the number of poured into the ball bearing ring. The design of the device has increased reliability. 2 ill.

Description

The utility model relates to the field of mechanical engineering and can be used in the bearing industry, namely when assembling thrust and angular contact bearings.

A device for assembling ball bearings [certificate of authorship SU No. 638760] is known, on the bed of which a unit for issuing and upsetting a set of balls is mounted, comprising an axially movable housing with a crescent-shaped channel and an inclined cut-off channel.

However, when using this device for thrust bearings, the balls often remain lying on the raceway, which leads to the formation of a vertical column of balls and the inability of the backfill operation, as a result of which the reliability of such a device is impaired. There is also a significant loss of time for filling the balls.

A device is also known for filling balls into a bearing ring, comprising a hopper with balls and a manipulator for filling balls [copyright certificate SU No. 1232455]. The hopper is equipped with a grip of the manipulator for filling the balls with two blades. Between the hopper and the manipulator for filling the balls with the possibility of rotation about the axis, a tray is mounted that is able to interact with the agitator of the hopper and with the manipulator of filling the balls. The wall of the tray on the side of the hopper is made with a slot for balls.

A disadvantage of the known device is low productivity, since the balls are filled in turn.

The closest in technical essence and combination of features to the claimed is a device for filling balls into the bearing ring [RU patent for utility model No. 157388]. The device comprises a hopper with a conical inner collar mounted coaxially with the bearing ring and a manipulator with a groove mounted with a gap relative to the inner surface of the hopper to accommodate balls freely sliding into it from the conical surface of the hopper collar when the manipulator is in its highest position and sliding freely from it into the bearing ring when the manipulator is in the lowest position.

The disadvantage of this device is its low reliability, since the number of balls located on the conical bead is greater than the number of balls falling into the groove of the manipulator, and therefore some of them get stuck when moving from the conical bead of the hopper into the groove of the manipulator, as a result of which it enters the bearing ring the number of balls is less than required.

The objective of the claimed utility model is to increase the reliability of the device.

This object is achieved in that in the device for filling the balls into the bearing ring, containing a hopper with a conical inner collar arranged coaxially with the bearing ring and a manipulator with a groove installed with a constant clearance relative to the inner surface of the hopper to accommodate balls freely rolling into it from the conical the flange surface when the manipulator is in its highest position and freely sliding from it into the bearing ring when the manipulator is in its lowest position SRI, on the conical surface of the flange mounted partitions whose number is equal to the number of filled into the bearing ring and the balls equal thickness

where t is the thickness of the partitions, D is the diameter of the cylindrical surface of the manipulator, d is the diameter of the balls, δ is the gap between adjacent partitions and the ball, z is the number of balls poured into the bearing ring.

The technical result is to ensure that the number of balls located on the flange is equal to the number of balls sliding into the groove of the manipulator and placed in the bearing ring.

Since partitions are installed on the conical surface of the collar of the hopper, the number of which is equal to the number of balls poured into the bearing ring, and the thickness of the partitions provides for a gap between the partitions and balls, rolling from the conical surface of the collar into the groove of the manipulator, the balls do not interfere with each other and do not jam , which ensures reliable filling of the grooves of the manipulator with the required number of balls. This increases the reliability of the device.

The invention is illustrated by drawings, where in FIG. 1 shows a cross section of the device in the extreme upper position of the manipulator, and in FIG. 2 shows a cross section of a device.

Positions on Thursdays are indicated by:

1 - hopper;

2 - manipulator;

3 - cover;

4 - sleeve;

5 - axis;

6 - partitions;

7 - a ring of the bearing.

The device consists of a cylindrical hopper 1, a manipulator 2, a cover 3, a sleeve 4, an axis 5 and partitions 6 (Fig. 1). The hopper 1 at the lower end has a recess for centering its axis relative to the axis of the bearing ring 7, into which the balls are filled. On the axis 5, located in the Central hole of the cover 3, a sleeve 4 is installed, and on the threaded part of the axis 5 is mounted a manipulator 2 made in the form of a body of revolution. The lid 3 has holes for filling the balls. The manipulator 2 is mounted coaxially with the inner surface of the hopper 1 so that between them one row of balls is freely placed. A conical bead is made on the inner surface of the hopper 1 to limit the position of the balls in the axial direction, and the manipulator 2 on the outer surface has a groove for accommodating the balls. On the conical surface of the flange of the hopper 1, partitions 6 are installed, the number of which is equal to the number of balls poured into the ring 7, and their thickness is

where t is the thickness of the partitions, D is the diameter of the cylindrical surface of the manipulator, d is the diameter of the balls, δ is the gap between adjacent partitions and the ball, z is the required number of balls poured into the bearing ring.

The specified thickness of the partitions ensures that on the surface of the conical flange of the hopper 1 the number of balls is equal to the number of balls that are poured into the ring 7.

The operation of the device is as follows. In the initial position, the axis 5 and the manipulator 2 are in the highest position, which is limited by a sleeve 4 resting against the end face of the cover 3. The balls are filled into the hopper 1 through the hole in the cover 3 and freely distributed in the inner cavity of the hopper 1, filling the annular gap between the inner surface hopper 1 and the outer cylindrical surface of the manipulator 2. A layer of balls located on the conical surface of the flange of the hopper 1, is placed between the partitions 6 with a gap δ (Fig. 2). Due to the presence of partitions 6, on the conical surface of the collar of the hopper 1 there is a number of balls, which is equal to the number of balls that are poured into the bearing ring 7. Therefore, they freely slide under the influence of gravity and pressure of the upper balls into the groove of the manipulator 2 (Fig. . one). The upper balls fill their place.

Then the axis 5 moves down to the end of the end against the cover 3. The manipulator 2, together with the balls located in its groove, goes down and in the extreme lower position of the manipulator 2, the balls freely pour out into the ring 7. Under the influence of gravity, the cycle repeats.

In the process of moving down and up, the manipulator 2 can receive rotation around its axis, playing the role of agitator. The movement of the axis 5 with the manipulator 2 can be carried out from a special drive.

Example. The inventive device was used to assemble thrust bearings No. 11182902840 for preliminary filling in the lower bearing ring z = 46 balls with a diameter of d = 5 mm. The diameter of the outer cylindrical surface of the manipulator is D = 80 mm. To freely place the balls between the partitions, a gap of δ = 0.15 mm was established.

Then, in accordance with formula (1), the thickness of the partitions is

The use of partitions of such a thickness made it possible to avoid interaction and jamming of the balls resulting from the interaction when moving from the conical surface of the flange of the hopper into the groove of the manipulator, which increases the reliability of the device.

Claims (3)

A device for filling balls into a bearing ring, comprising a hopper with a conical inner collar arranged coaxially with the bearing ring and a manipulator with a groove installed with a constant clearance relative to the inner surface of the hopper to accommodate balls freely sliding into it from the conical surface of the collar when the manipulator is in the extreme the upper position and freely sliding from it into the bearing ring when the manipulator is in the lowest position, characterized in that partitions are installed on the flange surface, the number of which is equal to the number of balls poured into the bearing ring and a thickness equal to

where t is the thickness of the partitions, D is the diameter of the cylindrical surface of the manipulator, d is the diameter of the balls, δ is the gap between adjacent partitions and the ball, z is the number of balls poured into the bearing ring.

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