Automatic riveting forming device for bearing retainer ring

Abstract

The utility model relates to an automatic riveting forming device for bearing retainer rings, which comprises a placing table, a lifting driving mechanism, a transmission component and a riveting block, a support cylinder is arranged on the placing table and used for allowing a gear shaft to be inserted and supporting a retainer ring to be riveted, the transmission component comprises a lifting column and a wedge block, the lower portion of the lifting column is connected with the lifting driving mechanism, and the wedge block is arranged on the lifting column. The upper portion of the lifting column is provided with an inclined face, the inclined face is matched with the wedge face of the wedge block, the lifting column and the wedge block are connected through a linkage piece and can move relatively, the riveting pressing block is connected with the wedge block, and the end, away from the wedge block, of the riveting pressing block is provided with a riveting pressing part used for applying force to the check ring in the radial direction. The placing table further comprises a supporting block, and the supporting block supports the wedge block so that the wedge block can only move in the radial direction of the check ring. And at least two groups of lifting columns, wedges and riveting blocks are distributed at intervals along the radial direction of the check ring. The device is simple in structure and convenient to operate, and can be used for riveting the retainer ring of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to an automatic riveting and pressing forming device for a bearing retaining ring. Background Art

[0002] Shaft parts are often used in conjunction with bearings in transmission systems. For ordinary transmission shafts, the bearings can be limited by setting shoulders, but for gear shafts, since gears are integrated into the shaft, shoulders cannot be set (the bearings cannot be assembled), and retaining rings are generally used to limit the inner rings of the bearings. There are two ways to install retaining rings, one is to use a retaining spring limiter, but this method is not stable enough and is not allowed in some scenarios (for example, in automobile transmission mechanisms, some parts are not allowed to be disassembled). Therefore, there is also a spinning method to install retaining rings, which is also a riveting method, but it requires the use of special spinning equipment. Therefore, it is necessary to set up a simple and easy-to-use riveting device. Utility Model Content

[0003] The utility model aims to provide an automatic riveting and pressing forming device for a bearing retaining ring, so as to automatically rivet and press the bearing retaining ring.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The automatic riveting and forming device for a bearing retaining ring comprises a placing table, a lifting drive mechanism, a transmission assembly and a riveting block. The placing table is provided with a supporting cylinder for inserting a gear shaft into and supporting the retaining ring to be riveted. The transmission assembly comprises a lifting column and a wedge block. The lower part of the lifting column is connected to the lifting drive mechanism. The upper part of the lifting column is provided with an inclined surface, which cooperates with the wedge surface of the wedge block. The lifting column and the wedge block are connected by a linkage and can move relative to each other. The riveting block is connected to the wedge block, and a riveting portion is provided at one end of the riveting block away from the wedge block, which is used to apply radial force to the retaining ring. The placing table also comprises a supporting block, which supports the wedge block so that the wedge block can only move radially along the retaining ring. The lifting column, the wedge block and the riveting block are provided in at least two groups, which are distributed at intervals along the radial direction of the retaining ring.

[0006] Furthermore, a plurality of supporting protrusions are provided on the upper end of the supporting tube along the circumferential direction, and the supporting protrusions are used to support the retaining ring.

[0007] Furthermore, the placement table includes an upper platen, a middle platen, and a bottom platen. The lifting drive mechanism adopts an oil cylinder, which is fixed between the middle platen and the bottom platen. The telescopic rod of the oil cylinder extends from the middle platen. A column is provided between the upper platen and the middle platen, and a through hole is provided on the upper platen for the lifting column to pass through.

[0008] Furthermore, a through hole is provided in the middle of the support block, which is sleeved on the outer circumference of the support tube. The support block has a guide groove that passes through the upper and lower parts, and the guide groove is used for the lifting column to pass through when lifting; the support block also has a support plane for supporting the wedge block.

[0009] Furthermore, one side of the upper portion of the lifting column is provided with an inclined slide groove, and the upper end of the slide groove is open.

[0010] Furthermore, the linkage member adopts a key, the wedge block has a U-shaped portion, and the two side walls of the U-shaped portion are provided with key holes, which cooperate with the key, and the bottom surface of the U-shaped portion forms the wedge surface; the back side of the wedge surface is provided with a connecting portion for connecting the riveting block.

[0011] Furthermore, the riveting block is in a fan-shaped block shape, the large end of the riveting block is a connecting end, and the small end is a concave arc surface.

[0012] Furthermore, the connection part and the connection end are both provided with flange holes and are connected by bolts.

[0013] Furthermore, the thickness of the connecting end is greater than the thickness of the small end.

[0014] Furthermore, a cover plate is provided on the upper side of the support block, a clearance hole is provided in the center of the cover plate, and the cover plate is used to limit the upward movement of the wedge block.

[0015] Beneficial effects of the utility model:

[0016] The automatic riveting and forming device of the utility model utilizes a lifting drive mechanism to drive a group of wedge blocks to move to the center position, and utilizes the riveting blocks installed on the wedge blocks to apply radial force to the retaining ring on the gear shaft, so that the outer periphery of the retaining ring is partially deformed and recessed into the preset annular groove on the gear shaft to achieve riveting. After the retaining ring is riveted, it plays a role in limiting the inner ring of the bearing and cannot be disassembled. The riveting and forming device has a simple structure and is easy to operate. It is not only suitable for riveting retaining rings on gear shafts, but also suitable for directly riveting retaining rings on the inner ring of bearings, or other scenarios where retaining rings need to be riveted on shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an automatic riveting and pressing device for a bearing retaining ring of the utility model;

[0018] Figure 2 yes Figure 1 Partial view of the upper middle part;

[0019] Figure 3 This is a three-dimensional diagram of an automatic riveting and forming device for a bearing retaining ring of the utility model (a view after the gear shaft is installed);

[0020] Figure 4 is a three-dimensional diagram of the support block;

[0021] Figure 5 It is a stereogram of the wedge;

[0022] Figure 6 It is a three-dimensional picture of the lifting column;

[0023] Figure 7 It is a three-dimensional picture of the riveting block;

[0024] Figure 8 This is a top partial view of the automatic riveting and forming device for the bearing retaining ring of the utility model (without the cover plate and part of the outer retaining plate);

[0025] Fig. 9 This is a view of the gear shaft after the retaining ring is riveted.

[0026] The names corresponding to the marks in the figure are:

[0027] 11. Upper platform; 12. Middle platform; 13. Column; 14. Bottom plate; 21. Outer baffle; 22. Cover plate; 23. Support cylinder; 231. Support protrusion; 24. Support block; 241. Guide groove; 242. Support plane; 31. Riveting block; 311. Riveting part; 4. Cylinder; 52. Wedge block; 521. U-shaped part; 522. Key hole; 523. Connecting part; 61. Gear shaft; 62. Bearing; 63. Retaining ring; 71. Lifting column; 711. Inclined surface; 712. Slide groove; 72. Transmission plate; 8. Key. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0029] Embodiments of the present utility model:

[0030] like Figure 1-Figure 9As shown, the automatic riveting and forming device for bearing retaining rings includes a placing table, a lifting drive mechanism, a transmission assembly and a riveting block 31. The placing table is provided with a support cylinder 23 for inserting the gear shaft 61 and supporting the retaining ring 63 to be riveted. When inserted, the gear end of the gear shaft 61 is facing upward. The upper end of the support cylinder 23 is provided with a plurality of support protrusions 231 along the circumferential direction. The support protrusions 231 are used to support the retaining ring 63, so that there is an appropriate interval between the upper end of the support cylinder 23 and the retaining ring 63, which is convenient for subsequent riveting. Before riveting, the retaining ring 63 is a circular ring, and a ring groove is provided on the gear shaft 61 at the inner ring of the gear. The riveting and forming device in this embodiment applies radial force to the retaining ring 63 through the action of the riveting block 31, so that the retaining ring 63 is partially deformed in the outer circumferential direction and recessed into the ring groove to achieve riveting. The retaining ring 63 after riveting has a limiting effect on the inner ring of the bearing 62.

[0031] Figure 8 As shown, the transmission assembly includes a lifting column 71, a wedge block 52, and a riveting block. The lifting column 71, the wedge block 52 and the riveting block 31 are provided in four groups and are evenly spaced along the radial direction of the retaining ring 63.

[0032] Figure 1 and 4 As shown, the placement platform also includes a support block 24, a through hole is provided in the middle of the support block 24, and the support block 24 is sleeved on the outer circumference of the support tube 23. The support block 24 has four guide grooves 241 that are arranged vertically and spaced along the circumference of the through hole, and the guide grooves 241 are for a corresponding lifting column 71 to pass through when lifting. The support block 24 also has a support plane 242 for supporting the wedge block 52, and the wedge block 52 is located at the top position of the guide groove 241. The four wedge blocks 52 are arranged coplanarly.

[0033] Figure 1 and 3 As shown, a cover plate 22 is provided on the upper side of the support block 24, and a clearance hole is provided in the center of the cover plate 22, which does not affect the installation of the gear shaft 61, the bearing 62, and the retaining ring 63. The cover plate 22 is used to limit the upward movement of the wedge block 52. Under the limiting action of the cover plate 22 and the support block 24, the wedge block 52 can only move radially along the retaining ring 63 when subjected to force, and does not move up and down. A riveting portion is provided at one end of the riveting block 31 away from the wedge block 52, and the riveting block 31 applies radial force to the retaining ring 63 when it moves toward the center position.

[0034] Figure 1 and 8 As shown, an outer baffle plate 21 is further provided on the outer side of the support block 24 so as not to affect the movement of the lifting column 71 in the guide groove 241 .

[0035] Figure 6 and 8As shown, the lifting column 71 and the wedge block 52 are connected by a linkage and can move relative to each other. The linkage adopts a key 8, and a pin can also be used in other embodiments. One side of the upper part of the lifting column 71 has an inclined slide groove 712, the upper end of the slide groove 712 is open, and a part of the key 8 is located in the slide groove 712.

[0036] Figure 5 and 6 As shown, the outer side of the wedge block 52 is a U-shaped portion 521, and the two side walls of the U-shaped portion 521 are provided with key holes 522, which cooperate with the keys, and the bottom surface of the U-shaped portion 521 forms a wedge surface; the upper part of the lifting column 71 is provided with an inclined surface 711, and the upper part of the lifting column 71 is located in the U-shaped portion 521, and the inclined surface 711 cooperates with the wedge surface of the wedge block 52. The back side of the wedge surface is provided with a connecting portion 523 for connecting the riveting block 31.

[0037] Figure 5 and 7 As shown, the connection part 523 and the connection end are both provided with flange holes and connected by bolts. The riveting block 31 is in the shape of a fan-shaped block, the large end of the riveting block 31 is the connection end, and the small end is an inwardly concave arc surface, forming a riveting part 311. The thickness of the connection end is greater than that of the small end, and the small end is used to apply force to the outer periphery of the retaining ring 63, and the thickness does not need to be too thick; and thickening the connection end can improve the strength.

[0038] Figure 1 and 3 As shown, the placing platform includes an upper platform 11, a middle platform 12, and a bottom plate 14. The lifting drive mechanism uses a cylinder 4, which is fixed between the middle platform 12 and the bottom plate 14. The telescopic rod of the cylinder 4 extends from the middle platform 12. The telescopic rod of the cylinder 4 is connected to a transmission plate 72. The lower ends of four lifting columns 71 are all connected to the transmission plate 72. The movement of the cylinder 4 can drive the four lifting columns 71 to move simultaneously. A column 13 is provided between the upper platform 11 and the middle platform 12, and a through hole is provided on the upper platform 11 for the lifting columns 71 to pass through.

[0039] The working principle of the automatic riveting and forming device for bearing retaining rings of the utility model is as follows:

[0040] The bearing 62 on the gear shaft 61 is pre-installed (by the method of the prior art), the retaining ring 63 is placed on the upper end of the support tube 23, and then the gear shaft 61 is vertically inserted into the support tube 23 (one end of the bearing 62 is facing downward). The oil cylinder 4 is started to drive the transmission plate 72 to move downward, and the four lifting columns 71 move downward with it. When the lifting columns 71 move downward, they exert a downward pulling force on the wedge block 52. Since the wedge block 52 can only move in the horizontal direction, the four wedge blocks 52 move horizontally toward the gear shaft 61 synchronously (that is, they all move toward the center), and the riveting block 31 moves horizontally synchronously. The riveting part is directly facing the outer periphery of the retaining ring 63. As the riveting part contacts the outer periphery of the retaining ring 63, the top pressure of the riveted part of the retaining ring 63 gradually deforms and is recessed inward into the annular groove (pre-opened) on the gear shaft 61 to achieve riveting. After the retaining ring 63 is riveted, it plays a role in limiting the inner ring of the bearing 62 and cannot be disassembled. The riveting forming device has a simple structure and is easy to operate.

Claims

1. Automatic riveting and forming device for bearing retaining ring, characterized by: It includes a placement table, a lifting drive mechanism, a transmission assembly and a riveting block. The placement table is provided with a support cylinder for the gear shaft to be inserted into and support the retaining ring to be riveted. The transmission assembly includes a lifting column and a wedge block. The lower part of the lifting column is connected to the lifting drive mechanism. The upper part of the lifting column is provided with an inclined surface, which cooperates with the wedge surface of the wedge block. The lifting column and the wedge block are connected by a linkage and can move relative to each other. The riveting block is connected to the wedge block, and a riveting part is provided at one end of the riveting block away from the wedge block. The riveting part is used to apply radial force to the retaining ring; the placement table also includes a support block, which supports the wedge block so that the wedge block can only move radially along the retaining ring; the lifting column, wedge block and riveting block are provided in at least two groups, which are distributed at intervals along the radial direction of the retaining ring.

2. The automatic riveting and forming device for a bearing retaining ring according to claim 1 is characterized in that: The upper end of the support tube is provided with a plurality of support protrusions along the circumferential direction, and the support protrusions are used to support the retaining ring.

3. The automatic riveting and forming device for a bearing retaining ring according to claim 1 is characterized in that: The placing table includes an upper platen, a middle platen and a bottom platen. The lifting drive mechanism adopts an oil cylinder, which is fixed between the middle platen and the bottom platen. The telescopic rod of the oil cylinder extends from the middle platen. A column is arranged between the upper platen and the middle platen, and a through hole is arranged on the upper platen for the lifting column to pass through.

4. The automatic riveting and forming device for a bearing retaining ring according to claim 1 is characterized in that: The support block is provided with a through hole in the middle, which is sleeved on the outer circumference of the support tube. The support block has a guide groove which is arranged through the upper and lower parts, and the guide groove is used for the lifting column to pass through when lifting. The support block also has a support plane for supporting the wedge block.

5. The automatic riveting and forming device for a bearing retaining ring according to claim 4 is characterized in that: One side of the upper part of the lifting column is provided with an inclined sliding groove, and the upper end of the sliding groove is open.

6. The automatic riveting and forming device for a bearing retaining ring according to claim 5 is characterized in that: The linkage member adopts a key, and the wedge block has a U-shaped portion. The two side walls of the U-shaped portion are provided with key holes, which cooperate with the key, and the bottom surface of the U-shaped portion forms the wedge surface; the back side of the wedge surface is provided with a connecting portion for connecting the riveting block.

7. The automatic riveting and forming device for a bearing retaining ring according to claim 6 is characterized in that: The riveting block is in a fan-shaped block shape, the large end of the riveting block is a connecting end, and the small end is a concave arc surface.

8. The automatic riveting and forming device for a bearing retaining ring according to claim 7 is characterized in that: The connecting part and the connecting end are both provided with flange holes and are connected by bolts.

9. The automatic riveting and forming device for a bearing retaining ring according to claim 7, characterized in that: The thickness of the connecting end is greater than the thickness of the small end.

10. The automatic riveting and forming device for a bearing retaining ring according to claim 4, characterized in that: A cover plate is provided on the upper side of the support block, and a clearance hole is provided at the center of the cover plate. The cover plate is used to limit the upward movement of the wedge block.

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