Auxiliary die for filling balls in full complement bearings with axial cracks in the outer ring

Abstract

The present invention belongs to the technical field of bearings, and particularly relates to an auxiliary mold for filling balls in a full-fill bearing with an axial crack on the outer ring. It comprises a bottom mold and an upper mold, wherein the upper mold can be fitted onto the bottom mold and move up and down relative to the bottom mold, wherein the middle of the bottom mold is provided with an inner ring fixing position for installing the inner ring of the bearing, and the bottom mold is also provided with an outer ring mounting position for placing the outer ring of the bearing, and the lower end surface of the upper mold is provided with a spreading filling block extending downward for inserting between the outer ring of the bearing installed on the bottom mold and the inner ring of the bearing, wherein the crack of the outer ring of the bearing is spread open during the downward pressing of the spreading filling block and a filling port for rolling element filling is formed at the opening. The entire installation process does not require further heat processing, and the installation efficiency is high.

Description

[Technical field]

[0001] The invention belongs to the technical field of bearings, and in particular relates to a ball filling auxiliary die for a full-complement bearing with an axial crack on the outer ring. [Background technology]

[0002] The bearing capacity is related to the number of rolling elements filled inside the bearing. The more rolling elements there are, the greater the bearing capacity. In order to obtain a higher bearing capacity, especially the bearing capacity of a ball bearing, the existing technology mostly fills a larger number of balls into the bearing by making an axial crack on the outer ring of the bearing or opening a ball filling gap on the diameter of the inner and outer ring ribs of the bearing. For multi-ball bearings with axial cracks on the outer ring, the existing technology mostly heats the outer ring and inserts a wedge into the crack, or directly inserts a wedge to force the crack open and fill the rolling elements. After filling, the cracks often cannot be completely reset, and there are defects such as crack collapse and scratches, which affect the quality of the finished bearing or even make it scrapped. [Summary of the invention]

[0003] In order to solve the problem that the cracks of the above-mentioned multi-ball bearings with axial cracks on the outer ring cannot be completely reset after the balls are filled, and defects such as crack collapse and scratches affect the quality of the finished bearings and even make them scrapped, the present invention provides a ball filling auxiliary mold for full-filled bearings with axial cracks on the outer ring.

[0004] The present invention is achieved through the following technical solutions:

[0005] An auxiliary mold for filling balls in a full-filled bearing with an axial crack on the outer ring comprises a bottom mold and an upper mold. The upper mold can be fitted onto the bottom mold and move up and down relative to the bottom mold. An inner ring fixing position for installing the inner ring of the bearing is provided in the middle of the bottom mold. An outer ring mounting position for placing the outer ring of the bearing is also provided on the bottom mold. A spreading filling block extending downward is provided on the lower end surface of the upper mold for being inserted between the outer ring of the bearing installed on the bottom mold and the inner ring of the bearing. During the downward pressing process of the spreading filling block, the crack of the outer ring of the bearing is spread open and a filling port for filling rolling elements is formed at the opening.

[0006] As described above, the auxiliary mold for filling balls in a fully-filled bearing with an axial crack in the outer ring, the expanded filling block is also provided with an observation port which is located above the filling port when expanded and can observe the gap between the outer ring and the inner ring of the bearing.

[0007] As described above, the auxiliary mold for filling balls in a full-complement bearing with an axial crack in the outer ring has a guide column extending upward in the middle of the bottom mold, and the inner ring fixing position is a groove arranged on the outside of the guide column.

[0008] As described above, the outer ring with axial crack type full-complement bearing ball filling auxiliary mold, the outer ring installation position is arranged on the outer peripheral side of the upper end surface of the bottom mold, and the inner side of the outer ring installation position is provided with an inclined guide surface that gradually tilts downward from the inside to the outside.

[0009] As described above, in the auxiliary mold for filling balls in a full-complement bearing with an axial crack in the outer ring, the outer ring mounting position is a platform extending from the lower end of the inclined guide surface to the outer peripheral surface of the bottom mold.

[0010] As described above, the auxiliary mold for filling balls in a full-complement bearing with an axial crack in the outer ring has a guide hole in the middle of the upper mold for the guide column to pass through, and a recess for installing the inner ring of the bearing is provided on the outer side of the guide hole.

[0011] As described above, in the auxiliary mold for filling balls in a fully-filled bearing with an axial crack on the outer ring, the expanded filling blocks are protrusions arranged on both sides of the recess and extending downward and insertable between the outer ring of the bearing and the inner ring of the bearing, and both protrusions are arc-shaped and cooperate with the outer ring of the bearing.

[0012] As described above, in the auxiliary mold for filling balls in a fully-filled bearing with an axial crack on the outer ring, the lower end of the outer side of the protrusion is a slope inclined inward from top to bottom, and the width dimension between the lower end of the slope and the inner side edge of the protrusion is smaller than the distance between the outer ring of the bearing and the inner ring of the bearing, and the width dimension between the upper end of the slope and the inner side edge of the protrusion is larger than the distance between the outer ring of the bearing and the inner ring of the bearing.

[0013] As for the auxiliary mold for filling balls in the full-complement bearing with axial cracks in the outer ring as described above, the observation port is a notch opened from the outer side of the upper mold toward the direction of the protrusion and the recess.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention provides a ball-filling auxiliary mold for a full-fill bearing with an axial crack on the outer ring. After a crack is opened on the outer ring of the bearing, the inner ring of the bearing is placed on the inner ring fixing position of the bottom mold, and the outer ring of the bearing is placed on the outer ring installation position. The rolling body is first directly placed in the raceway between the outer ring of the bearing and the inner ring of the bearing. After the number of installed rolling bodies reaches the limit that can be directly placed, the gap between the inner ring of the bearing and the outer ring is fixed by the internal rolling body, and the external rolling body cannot be directly placed in the raceway. At this time, the upper mold is pressed down to open the filling block and insert it between the outer ring of the bearing and the inner ring of the bearing. The filling block is inserted between the inner and outer rings of the bearing from a direction nearly perpendicular to the crack, and the outer ring of the bearing is opened from the crack during the continuous pressing process, and a filling port for the rolling body to be filled is formed at the opening. When the size of the filling port is larger than the diameter of the rolling body, the rolling body can be smoothly filled through the filling port to complete the full filling. The entire installation process does not require further heat processing, and the installation efficiency is high.

Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the ball-filling auxiliary mold of the full-complement bearing with axial cracks on the outer ring of the present invention before being pressed down;

[0018] Figure 2 This is a schematic diagram of the bearing ball filling auxiliary mold after pressing down;

[0019] Figure 3 An exploded view of the structure of the auxiliary mold for filling the bearing with balls and bearings;

[0020] Figure 4 This is a schematic diagram of the structure of the auxiliary mold for filling balls into the bearing;

[0021] Figure 5 The structural explosion diagram of the auxiliary mold for filling balls into the bearing;

[0022] Figure 6 Schematic diagram of the structure of the bottom mold;

[0023] Figure 7 It is a structural schematic diagram of the upper die;

[0024] Figure 8 A half-section view of the auxiliary mold for filling bearing balls. [Specific implementation method]

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The present invention is achieved through the following technical solutions:

[0027] like Figures 1 to 8As shown, an auxiliary mold for filling balls in a fully-filled bearing with an axial crack on the outer ring comprises a bottom mold 1 and an upper mold 2. The upper mold 2 can be fitted onto the bottom mold 1 and move up and down relative to the bottom mold 1. An inner ring fixing position 101 for mounting a bearing inner ring 91 is provided in the middle of the bottom mold 1. An outer ring mounting position 102 for accommodating a bearing outer ring 92 is also provided on the bottom mold 1. A spreading filling block 21 extending downward is provided on the lower end surface of the upper mold 2 for being inserted between the bearing outer ring 92 and the bearing inner ring 91 mounted on the bottom mold 1. During the downward pressing process of the spreading filling block 21, the crack of the bearing outer ring 92 is spread open and a filling port 31 for filling rolling elements is formed at the opening. The present invention provides a ball-filling auxiliary mold for a full-fill bearing with an axial crack on the outer ring. After a crack is opened on the outer ring of the bearing, the inner ring of the bearing is placed on the inner ring fixing position of the bottom mold, and the outer ring of the bearing is placed on the outer ring installation position. The rolling body is first directly placed in the raceway between the outer ring of the bearing and the inner ring of the bearing. After the number of placed rolling bodies reaches the limit, the gap between the inner ring of the bearing and the outer ring is fixed by the internal rolling body, and the external rolling body cannot be directly placed in the raceway. At this time, the upper mold is pressed down to open the filling block and insert it between the outer ring of the bearing and the inner ring of the bearing. The filling block is inserted between the inner and outer rings of the bearing from a direction nearly perpendicular to the crack, and the outer ring of the bearing is opened from the crack during the continuous pressing process, and a filling port for the rolling body to be filled is formed at the opening. When the size of the filling port is larger than the diameter of the rolling body, the rolling body can be smoothly filled through the filling port to complete the full filling, and the installation efficiency is high.

[0028] Furthermore, the expansion filling block 21 is also provided with an observation port 3 which is located above the filling port 31 when expanded and can observe the gap between the bearing outer ring 92 and the bearing inner ring 91. Specifically, the observation port 3 is a gap formed after removing materials on both sides of the expansion filling block 21. The purpose of removing the metal on both sides of the expansion filling block is to eliminate the obstruction of the expansion filling block cone surface at the relative position of the crack to the filled rolling body, provide a better observation window for the operator, and move the filled rolling body through the window when necessary. It has a simple structure, is convenient for the filling of the rolling body, and makes the installation efficiency higher.

[0029] In addition, the middle of the bottom die 1 has a guide column 11 extending upward, and the inner ring fixing position 101 is a groove arranged outside the guide column 11. The guide column has the function of guiding and positioning. When the press presses the upper die, it ensures that the upper die moves vertically downward. When the press presses to the upper end surface of the guide column, it cannot move downward any further. This is the maximum expansion distance, which is conducive to controlling the expansion distance of the bearing outer ring and preventing excessive expansion, which causes the crack to be unable to be reset.

[0030] In this solution, the outer ring installation position 102 is arranged on the outer peripheral side of the upper end surface of the bottom mold 1, and the inner side of the outer ring installation position 102 is provided with an inclined guide surface that gradually tilts downward from the inside to the outside. In addition, the outer ring installation position 102 is a platform extending from the lower end of the inclined guide surface to the outer peripheral surface of the bottom mold 1. Since the outer ring of the bearing is deformed by the insertion of the expanded filling block when it is expanded, this solution uses the inclined guide surface. When it is not expanded, the lower end surface of the outer ring of the bearing contacts the inclined guide surface. During the downward pressure process, it is gradually expanded, and the outer ring of the bearing at the expanded position can also be regarded as moving down along the inclined surface, thereby forming a gradually opened action until it moves down to contact with the platform. At this time, the expanded filling port 31 is the largest, slightly larger than the diameter of the rolling body, thereby facilitating the installation of the rolling body.

[0031] Similarly, the upper die is also provided with a positioning and limiting structure for installing the inner and outer rings of the bearing: a guide hole 201 is provided in the middle of the upper die 2 for the guide column 11 to pass through, and a recess 202 is provided on the outer side of the guide hole 201 for installing the inner ring 91 of the bearing.

[0032] Furthermore, the expansion filling block 21 is a convex block 22 provided on both sides of the concave position 202 and extending downward and insertable between the bearing outer ring 92 and the bearing inner ring 91, and the outer surfaces of the two convex blocks 22 are arc-matched with the inner surface of the outer ring, and the inner surfaces of the two convex blocks 22 are arc-matched with the outer surface of the inner ring, so that it is easy to insert between the outer ring and the inner ring, and has equal strength.

[0033] Specifically, the lower end of the outer side of the protrusion 22 is an inclined surface 221 that is inclined inward from top to bottom, and the width dimension between the lower end of the inclined surface 221 and the inner side edge of the protrusion 22 is smaller than the distance between the bearing outer ring 92 and the bearing inner ring 91, and the width dimension between the upper end of the inclined surface 221 and the inner side edge of the protrusion 22 is larger than the distance between the bearing outer ring 92 and the bearing inner ring 91. The structure of the inclined surface cooperates with the downward movement of the protrusion to form an effect of gradually opening the outer ring of the bearing, and the size of the opening can be controlled by controlling the downward movement distance.

[0034] In addition, the guide post can be set to be adjustable in height to adjust the downward movement distance, so as to adjust the size of the filling port. For example, by setting a threaded guide sleeve on the guide post, the upward and downward movement of the guide sleeve can be adjusted by rotating it. The higher the guide sleeve is, the higher the lowest position of the press is, and the smaller the distance the upper die can move downward.

[0035] The present invention provides a ball-filling auxiliary mold for a full-fill bearing with an axial crack on the outer ring. After a crack is opened on the outer ring of the bearing, the inner ring of the bearing is placed on the inner ring fixing position of the bottom mold, and the outer ring of the bearing is placed on the outer ring installation position. The rolling body is first directly placed in the raceway between the outer ring of the bearing and the inner ring of the bearing. After the number of placed rolling bodies reaches the limit, the gap between the inner ring and the outer ring of the bearing is fixed by the internal rolling body, and the external rolling body cannot be directly placed in the raceway. At this time, the upper mold is pressed down to open the filling block and insert it between the inner and outer rings of the bearing. The filling block is inserted between the inner and outer rings of the bearing from a direction nearly perpendicular to the crack, and the outer ring of the bearing is opened from the crack during the continuous pressing process, and a filling port for the rolling body to be filled is formed at the opening. When the size of the filling port is larger than the diameter of the rolling body, the rolling body can be smoothly filled through the filling port to complete the full filling. The entire installation process does not require further heat processing, and the installation efficiency is high.

[0036] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of the present invention, or some technical deductions or replacements made under the premise of the concept of the present invention should be regarded as the protection scope of the present invention.

Claims

1. Auxiliary die for filling balls in full complement bearings with axial cracks in the outer ring, characterized in that: The invention comprises a bottom die (1) and an upper die (2), wherein the upper die (2) can be fitted onto the bottom die (1) and can move up and down relative to the bottom die (1), wherein an inner ring fixing position (101) for mounting a bearing inner ring (91) is provided at the middle of the bottom die (1), and an outer ring mounting position (102) for mounting a bearing outer ring (92) is also provided on the bottom die (1), and a spreading filling block (21) is provided on the lower end surface of the upper die (2) and extends downwardly for being inserted between the bearing outer ring (92) mounted on the bottom die (1) and the bearing inner ring (91), wherein the spreading filling block (21) spreads open a crack in the bearing outer ring (92) during the downward pressing process and forms a filling opening (31) at the opening for filling a rolling element; The bottom mold (1) has a guide column (11) extending upward in the middle, and the inner ring fixing position (101) is a groove arranged on the outside of the guide column (11); A guide hole (201) is provided in the middle of the upper mold (2) for the guide column (11) to pass through, and a recess (202) is provided on the outer side of the guide hole (201) for the bearing inner ring (91) to be installed. The expansion filling blocks (21) are protrusions (22) disposed on both sides of the recess (202) and extending downward and insertable between the bearing outer ring (92) and the bearing inner ring (91), the outer surfaces of the two protrusions (22) both match the arc shape of the inner surface of the outer ring, and the inner surfaces of the two protrusions (22) both match the arc shape of the outer surface of the inner ring; The outer ring installation position (102) is arranged on the upper end surface of the bottom mold (1) close to the outer peripheral side, and the inner side of the outer ring installation position (102) is provided with an inclined guide surface which gradually inclines downward from the inside to the outside.

2. The auxiliary die for filling balls in a full complement bearing with an axial crack in the outer ring according to claim 1, characterized in that: The expansion filling block (21) is also provided with an observation port (3) which is located above the filling port (31) when expanded and through which the gap between the bearing outer ring (92) and the bearing inner ring (91) can be observed.

3. The auxiliary die for filling balls in a full complement bearing with an axial crack in the outer ring according to claim 1, characterized in that: The outer ring mounting position (102) is a platform extending from the lower end of the inclined guide surface to the outer peripheral surface of the bottom mold (1).

4. The ball filling auxiliary mold for full complement bearings with axial cracks in the outer ring according to claim 1 is characterized in that: The lower end of the outer side of the projection (22) is an inclined surface (221) that is inclined inward from top to bottom, and the width dimension between the lower end of the inclined surface (221) and the inner side edge of the projection (22) is smaller than the distance between the bearing outer ring (92) and the bearing inner ring (91), and the width dimension between the upper end of the inclined surface (221) and the inner side edge of the projection (22) is larger than the distance between the bearing outer ring (92) and the bearing inner ring (91).

5. The ball filling auxiliary mold for full complement bearings with axial cracks in the outer ring according to claim 2 is characterized in that: The observation port (3) is a notch formed from the outer side of the upper mold (2) in the direction of the protrusion (22) and the recess (202).

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