Positioning mandrel adjusting device for bearing ring machining

Abstract

The utility model relates to the technical field of bearing ring machining, in particular to a positioning mandrel adjusting device used in the bearing ring machining process. According to the technical scheme, the bearing ring comprises a mounting frame and a bearing ring body, a mounting groove and a rotating groove are formed in the top of the mounting frame, a superfinishing mandrel assembly is fixedly mounted at the top of the mounting frame, the periphery of the superfinishing mandrel assembly is rotationally sleeved with a positioning mandrel assembly matched with the superfinishing mandrel assembly, and the periphery of the positioning mandrel assembly is sleeved with the bearing ring body; a driving assembly is rotationally mounted at the top of the mounting frame and used for driving the bearing ring body to rotate. According to the utility model, the positioning mandrel body is not in direct contact with the superfinishing mandrel body, and can rotate at the periphery of the superfinishing mandrel body, so that the abrasion between the positioning mandrel body and the superfinishing mandrel body caused by rotation is avoided, and the positioning mandrel body can be quickly mounted and dismounted; and the positioning mandrel body can be conveniently adjusted and replaced.

Description

Technical Field

[0001] This utility model relates to the field of bearing ring processing technology, and in particular to a positioning mandrel adjustment device for bearing ring processing. Background Technology

[0002] Bearing rings are a crucial component of bearings, and their machining quality directly impacts bearing performance and lifespan. During the machining process of bearing rings, the locating mandrel is one of the key pieces of equipment. The function of the locating mandrel is to provide precise support and positioning reference for the bearing rings, ensuring the coaxiality, dimensional accuracy, and surface quality of the rings during machining.

[0003] In the prior art, patent publication number CN212977911U describes a positioning mandrel adjustment device for ultra-precision machining of railway bearing rings. The device includes a positioning mandrel, an ultra-precision mandrel, a bearing, a pressure cap, a retaining ring, and special bolts. The positioning mandrel has an annular boss at the center of its upper and lower end faces for mounting the bearing, and a through hole concentric with the annular boss at its center. The ultra-precision mandrel is a stepped shaft with a through hole at its center, and its larger end has two sections of round shafts that mate with the bearing. The bearing is housed within the annular boss, and the two are interference-fitted. The pressure cap is located on the upper end face of the positioning mandrel. This adjustment device is simple, lightweight, and easy to replace. It improves the original positioning mandrel structure, changing the sliding fit between it and the ultra-precision mandrel to a rolling fit, avoiding friction and scratches between them, while also ensuring the positioning accuracy of the bearing rings.

[0004] Although the aforementioned positioning mandrel adjustment device for ultra-precision machining of bearing rings can achieve the effect of protecting the inner wall of the positioning mandrel and the outer wall of the ultra-precision mandrel through the setting of oil film through holes and oil passage holes, it still has the following shortcomings in practical applications: wear will occur between the inner wall of the positioning mandrel and the outer wall of the ultra-precision mandrel when they rotate, and the positioning mandrel is troublesome to replace. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a positioning mandrel adjustment device for bearing ring machining.

[0006] To achieve this objective, the present invention adopts the following technical solution: a positioning mandrel adjustment device for machining bearing rings, comprising a mounting frame and a bearing ring body, wherein the top of the mounting frame is provided with a mounting groove and a rotating groove, an ultra-precision mandrel assembly is fixedly mounted on the top of the mounting frame, a positioning mandrel assembly that cooperates with the ultra-precision mandrel assembly is rotatably sleeved on the periphery of the ultra-precision mandrel assembly, the bearing ring body is sleeved on the periphery of the positioning mandrel assembly, and a drive assembly is rotatably mounted on the top of the mounting frame for driving the bearing ring body to rotate.

[0007] Preferably, the ultra-precision mandrel assembly includes an ultra-precision mandrel body, a fixing plate is fixedly connected to the bottom end of the ultra-precision mandrel body, and fixing screws are provided at the four corners of the top of the fixing plate. The fixing plate is fixedly installed in the mounting groove opened on the top of the mounting frame by multiple fixing screws.

[0008] Preferably, an annular semi-groove is formed on the periphery of the ultra-precision mandrel body.

[0009] Preferably, the positioning mandrel assembly includes a positioning mandrel body sleeved around the ultra-precision mandrel body, a bearing ring body sleeved around the positioning mandrel body, and an annular semi-groove II formed on the inner wall of the positioning mandrel body. The annular semi-groove II and the annular semi-groove I cooperate with each other to form an annular rotating hole, which is filled with a plurality of steel balls.

[0010] Preferably, the outer wall of the positioning mandrel body is provided with a screw hole, and the screw hole is connected to the second annular half groove. The diameter of the screw hole is larger than the diameter of the steel ball. A fixing bolt is connected to the screw hole by internal thread. The tail end of the fixing bolt is provided with an arc-shaped groove that matches the second annular half groove.

[0011] Preferably, the drive assembly includes a rotating ring rotatably mounted in a rotating groove at the top of the mounting bracket, the top of the rotating ring engaging with the bottom of the bearing ring body, an external gear ring rotatably sleeved around the outer periphery of the rotating ring, and a drive gear rotatably mounted at the top of the mounting bracket, the drive gear meshing with the external gear ring.

[0012] Preferably, a drive motor is fixedly installed at the bottom of the mounting bracket, and the output end of the drive motor passes through the top wall of the mounting bracket and is fixedly connected to the bottom of the drive gear.

[0013] The beneficial effects of this utility model are as follows: When using this device, firstly, select a positioning mandrel body that matches the bearing ring body of different specifications. Then, fit the positioning mandrel body around the ultra-precision mandrel body. Next, fill multiple steel balls into the annular rotating hole formed between the second and first annular half-grooves through the screw hole. Finally, screw the fixing bolt into the screw hole. The positioning mandrel body is then confined to the periphery of the ultra-precision mandrel body, and can rotate around the periphery of the ultra-precision mandrel body without direct contact. When it is necessary to adjust the positioning mandrel body... When replacing the positioning mandrel, unscrew the fixing bolts and pour out the multiple steel balls from the screw holes. This removes the steel balls from the positioning mandrel body, allowing it to be pulled away from the periphery of the ultra-precision mandrel body. Through these features, the device not only prevents the positioning mandrel body from directly contacting the ultra-precision mandrel body but also allows rotation around the ultra-precision mandrel body, avoiding wear caused by rotation between them. It also allows for quick installation and disassembly of the positioning mandrel body, facilitating adjustment and replacement. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of an embodiment of the positioning mandrel adjustment device for bearing ring processing according to this utility model;

[0015] Figure 2 This is a front sectional view of the overall structure of an embodiment of the positioning mandrel adjustment device for bearing ring processing according to this utility model;

[0016] Figure 3 This is a cross-sectional view of the overall structure of the ultra-precision mandrel assembly and the positioning mandrel assembly in the disassembled state of an embodiment of the positioning mandrel adjustment device for bearing ring processing according to this utility model.

[0017] Reference numerals in the attached drawings: 1. Mounting bracket; 2. Ultra-precision mandrel assembly; 21. Ultra-precision mandrel body; 22. Annular semi-groove one; 23. Fixing plate; 24. Fixing screw; 3. Positioning mandrel assembly; 31. Positioning mandrel body; 32. Annular semi-groove two; 33. Steel ball; 34. Screw hole; 35. Fixing bolt; 4. Drive assembly; 41. Rotating ring; 42. External gear ring; 43. Drive gear; 44. Drive motor; 5. Bearing ring body. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0022] Example 1

[0023] like Figure 1-3 As shown, the present invention proposes a positioning mandrel adjustment device for bearing ring processing, including a mounting frame 1 and a bearing ring body 5. The top of the mounting frame 1 is provided with a mounting groove and a rotating groove. A high-precision mandrel assembly 2 is fixedly mounted on the top of the mounting frame 1. A positioning mandrel assembly 3 that cooperates with the high-precision mandrel assembly 2 is rotatably sleeved on the periphery of the high-precision mandrel assembly 2. The bearing ring body 5 is sleeved on the periphery of the positioning mandrel assembly 3. A drive assembly 4 is rotatably mounted on the top of the mounting frame 1 for driving the bearing ring body 5 to rotate.

[0024] In this embodiment: the ultra-precision mandrel assembly 2 includes an ultra-precision mandrel body 21. A fixing plate 23 is fixedly connected to the bottom end of the ultra-precision mandrel body 21. Fixing screws 24 are provided at the four corners of the top of the fixing plate 23. The fixing plate 23 is fixedly installed in the mounting groove opened at the top of the mounting frame 1 by multiple fixing screws 24. Through this setting, the ultra-precision mandrel body 21 can be fixedly installed in the top mounting groove of the mounting frame 1 by the cooperation of the fixing plate 23 and multiple fixing screws 24. An annular semi-groove 22 is opened on the periphery of the ultra-precision mandrel body 21. Through this setting, the ultra-precision mandrel body 21 cooperates with the positioning mandrel assembly 3 through the annular semi-groove 22. The positioning mandrel assembly 3 includes a positioning mandrel body 31 sleeved on the periphery of the ultra-precision mandrel body 21, a bearing ring body 5 sleeved on the periphery of the positioning mandrel body 31, and an annular semi-groove 32 is opened on the inner wall of the positioning mandrel body 31. The annular semi-groove 32 cooperates with the annular semi-groove 22 to form an annular rotating hole. Multiple steel... The steel ball 33, through this arrangement, allows the steel ball 33 to slide within the annular rotating hole formed by the second annular groove 32 and the first annular groove 22. The positioning mandrel body 31 is then confined to the periphery of the ultra-precision mandrel body 21 by the cooperation of the annular rotating hole and the multiple steel balls 33, and can rotate around the periphery of the ultra-precision mandrel body 21 without direct contact with the outer wall of the ultra-precision mandrel body 21. The outer wall of the positioning mandrel body 31 is provided with a screw hole 34, and the screw hole 34 is connected to the second annular groove 32. The diameter of hole 34 is larger than the diameter of ball 33. A fixing bolt 35 is threaded into the screw hole 34. The tail end of the fixing bolt 35 is provided with an arc groove that matches the annular semi-groove 32. With this setting, when the positioning mandrel body 31 needs to be replaced, simply unscrew the fixing bolt 35 and pour out multiple balls 33 from the screw hole 34. This will remove the limiting effect of the balls 33 on the positioning mandrel body 31, and the positioning mandrel body 31 can be pulled out from the periphery of the ultra-precision mandrel body 21.

[0025] Example 2

[0026] like Figure 1-3As shown, the positioning mandrel adjustment device for bearing ring processing proposed in this utility model, compared with Embodiment 1, further includes a drive assembly 4 comprising a rotating ring 41 rotatably mounted in the top groove of the mounting frame 1. The top of the rotating ring 41 engages with the bottom of the bearing ring body 5. An external gear ring 42 is rotatably sleeved around the rotating ring 41. A drive gear 43 is rotatably mounted on the top of the mounting frame 1, and the drive gear 43 meshes with the external gear ring 42. This arrangement allows the rotation of the drive gear 43 to drive the external gear ring 42 to rotate, which in turn drives the rotating ring 41 to rotate within the groove, thereby causing the bearing ring body 5 to rotate. A drive motor 44 is fixedly mounted on the bottom of the mounting frame 1. The output end of the drive motor 44 penetrates the top wall of the mounting frame 1 and is fixedly connected to the bottom of the drive gear 43. This arrangement allows the start of the drive motor 44 to drive the drive gear 43 to rotate.

[0027] Working principle: When using this device, first select a positioning mandrel body 31 that matches the bearing ring body 5 of different specifications. Place the positioning mandrel body 31 around the ultra-precision mandrel body 21. Then, fill multiple steel balls 33 from the screw hole 34 into the annular rotating hole formed between the annular half-groove 22 and the annular half-groove 12. Then, screw the fixing bolt 35 into the screw hole 34. The positioning mandrel body 31 is then restricted to the periphery of the ultra-precision mandrel body 21, and the positioning mandrel body 31 can rotate around the ultra-precision mandrel body 21 without direct contact with it. When the positioning mandrel body 31 needs to be replaced, unscrew the fixing bolt 35 and pour out the multiple steel balls 33 from the screw hole 34. This will remove the restriction of the steel balls 33 on the positioning mandrel body 31, allowing it to be pulled out from the periphery of the ultra-precision mandrel body 21.

[0028] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A positioning mandrel adjustment device for machining a bearing ring, comprising a mounting frame (1) and a bearing ring body (5), characterized in that: The top of the mounting bracket (1) is provided with a mounting groove and a rotating groove. The top of the mounting bracket (1) is fixedly mounted with a super-precision mandrel assembly (2). The outer periphery of the super-precision mandrel assembly (2) is rotatably fitted with a positioning mandrel assembly (3) that cooperates with the super-precision mandrel assembly (2). The bearing ring body (5) is fitted around the positioning mandrel assembly (3). The top of the mounting bracket (1) is rotatably mounted with a drive assembly (4) for driving the bearing ring body (5) to rotate.

2. A positioning arbor adjustment device for machining a bearing ring as set forth in claim 1, wherein, The ultra-precision mandrel assembly (2) includes an ultra-precision mandrel body (21), and a fixing plate (23) is fixedly connected to the bottom end of the ultra-precision mandrel body (21). Fixing screws (24) are provided at the four corners of the top of the fixing plate (23). The fixing plate (23) is fixedly installed in the mounting groove opened on the top of the mounting frame (1) by multiple fixing screws (24).

3. A bearing ring machining time positioning mandrel adjusting device according to claim 2, characterized in that, The outer periphery of the ultra-precision mandrel body (21) is provided with an annular semi-groove (22).

4. A positioning arbor adjustment device for machining a bearing ring as set forth in claim 3, wherein, The positioning mandrel assembly (3) includes a positioning mandrel body (31) sleeved around the ultra-precision mandrel body (21), a bearing ring body (5) sleeved around the positioning mandrel body (31), and an annular semi-groove II (32) opened on the inner wall of the positioning mandrel body (31). The annular semi-groove II (32) and the annular semi-groove I (22) cooperate with each other to form an annular rotating hole, and the annular rotating hole is filled with multiple steel balls (33).

5. A bearing ring machining time positioning mandrel adjusting device according to claim 4, characterized in that, The outer wall of the positioning mandrel body (31) is provided with a screw hole (34), and the screw hole (34) is connected to the annular half groove (32). The diameter of the screw hole (34) is larger than the diameter of the steel ball (33). A fixing bolt (35) is connected to the screw hole (34) by a thread. The tail end of the fixing bolt (35) is provided with an arc groove that matches the annular half groove (32).

6. A bearing ring machining positioning mandrel adjustment device according to claim 1, characterized in that, The drive assembly (4) includes a rotating ring (41) rotatably mounted in the top groove of the mounting frame (1). The top of the rotating ring (41) is engaged with the bottom of the bearing ring body (5). An external gear ring (42) is rotatably sleeved around the rotating ring (41). A drive gear (43) is rotatably mounted on the top of the mounting frame (1). The drive gear (43) meshes with the external gear ring (42).

7. The positioning mandrel adjustment device for bearing ring machining according to claim 6, characterized in that, A drive motor (44) is fixedly installed at the bottom of the mounting bracket (1). The output end of the drive motor (44) passes through the top wall of the mounting bracket (1) and is fixedly connected to the bottom of the drive gear (43).

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