An automatic centering device of a rolling bearing press fitting machine
By setting a centering structure and a flattening mechanism on the rolling bearing press machine, the displacement problem caused by misalignment during press-fitting is solved, and the coaxial alignment of the rolling bearing and the housing is achieved, thereby improving press-fitting efficiency and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI ZHENPU TRACK MANUFACTURING CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-24
AI Technical Summary
If the existing press-fitting machine is not aligned when pressing bearings, it is easy to cause displacement, resulting in unsuccessful pressing or the need to adjust the position and press-fit again, which affects pressing efficiency and yield.
An automatic centering device for a rolling bearing press is designed. By setting a centering structure between the base and the press table, a connecting frustum and a flattening mechanism are set to ensure that the rolling bearing and the housing are coaxially aligned during press-fitting. The press head is driven by a cylinder to perform synchronous extrusion, thereby achieving automatic centering.
This method achieves coaxial alignment of the rolling bearing and housing during press-fitting, avoiding displacement and improving the yield and efficiency of press-fitting.
Smart Images
Figure CN224543706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing press-fitting technology, specifically to an automatic centering device for a rolling bearing press-fitting machine. Background Technology
[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. Currently, bearings have a wide range of applications in industrial production, equipment, and other fields.
[0003] In the production process of some devices and equipment, it is necessary to press-fit specific types of bearings onto their housing structures to integrate the bearings with the equipment. Currently, press-fitting operations require specialized press-fitting machines. However, most existing press-fitting machines have flat support plates, with the bushings or pressure plates to be pressed placed on the pressure platform. During the pressing process, if the protruding end of the press-fitting machine is not aligned with the part being pressed, displacement can easily occur, leading to unsuccessful press-fitting or requiring repositioning and re-press-fitting. Therefore, we propose an automatic alignment device for rolling bearing press-fitting machines. Utility Model Content
[0004] The purpose of this utility model is to provide an automatic centering device for a rolling bearing press-fitting machine, which solves the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: An automatic centering device for a rolling bearing press-fitting machine includes a base, a frame, and a press-fitting table. A press-fitting head is fixedly mounted on the output shaft of the cylinder. A centering structure is provided between the base and the press-fitting table. The centering structure includes a sleeved frustum. A flattening mechanism is provided on the press-fitting table.
[0006] Preferably, a sliding groove is provided at the top of the base, and the sliding groove is slidably connected to the fitting frustum. The fitting frustum is slidably connected to the pressing table, and the fitting frustum has a structure that is smaller at the top and larger at the bottom.
[0007] Preferably, a second sliding groove is provided through the bottom end of the sleeved frustum. A limiting rod is fixedly installed at the bottom end of the first sliding groove. The limiting rod is adapted to the second sliding groove. A support spring is fixedly installed inside the bottom end of the first sliding groove. The limiting rod is sleeved on the surface of the support spring. The top end of the support spring is in contact with the top end of the inside of the second sliding groove.
[0008] Preferably, there are two sets of flattening mechanisms, which are arranged vertically along the surface of the pressing head.
[0009] Preferably, the flattening mechanism includes two fixed seats, which are fixedly installed on the surface of the pressing head. The two fixed seats are symmetrically arranged with respect to the pressing head. A sliding rod is slidably connected through the upper and lower ends of the fixed seats. A return spring is sleeved on the surface of the sliding rod, and the bottom end of the return spring is fixedly connected to the top end of the fixed seat.
[0010] Preferably, a pressing plate is slidably mounted on the bottom end of the slide rod, and an adjusting plate is slidably mounted on the end of the pressing plate away from the pressing head, with a lead screw threaded through the adjusting plate.
[0011] Preferably, the lead screw is rotatably connected to the fixed base, and the lead screw is slidably connected to the slide rod through the surface of the slide rod.
[0012] Preferably, the base and the frame are fixedly connected, the bottom of the frame is fixedly connected to the pressing table, and the top of the frame is fixedly connected to the cylinder.
[0013] By employing the above technical solution, this utility model provides an automatic centering device for a rolling bearing press-fitting machine, which has at least the following beneficial effects: (1) This utility model sets a centering mechanism between the base and the pressing table, and uses the truncated cone structure with the smaller top and larger bottom to limit the rolling bearing and the housing at the same time, so that the rolling bearing, the pressed part and the pressing head are on the same axis. Then, the pressing flattening mechanism set on the pressing head is used to simultaneously squeeze the two sides of the rolling bearing and the housing, so that the rolling bearing and the housing are in a coaxial horizontal state during pressing, realizing automatic centering, and no displacement will occur during pressing, thus improving the yield of pressing. Attached Figure Description
[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the base of this utility model; Figure 3 This is a schematic diagram of the overall structure of the flattening mechanism of this utility model; Figure 4 This is a schematic diagram of the disassembled structure of the flattening mechanism of this utility model; Figure 5 This is a partial structural diagram of the flattening mechanism of this utility model.
[0015] In the diagram: 1. Base; 2. Frame; 3. Pressing table; 4. Cylinder; 5. Pressing head; 6. Centering structure; 7. Flattening mechanism; 61. Connecting frustum; 62. Slide groove one; 63. Slide groove two; 64. Limiting rod; 65. Support spring; 71. Fixed base; 72. Slide rod; 73. Return spring; 74. Press plate; 75. Adjusting plate; 76. Lead screw. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figures 1-5 An automatic centering device for a rolling bearing press-fitting machine includes a base 1, on which a frame 2 is fixedly mounted. The side plates of the frame 2 are composed of two "C"-shaped structures, which can effectively improve the overall stability during press-fitting. A press-fitting table 3 is fixedly mounted inside the frame 2 near its bottom via an interlocking mechanism to provide support for the press-fitting of the rolling bearing. This interlocking mechanism allows the frame 2 to help the press-fitting table 3 share the pressure, improving operational stability. A cylinder 4 is fixedly mounted at the top of the frame 2. The output shaft of the cylinder 4 passes through the top of the frame 2 and is fixedly connected to a press-fitting head 5. The operation of the cylinder 4 can drive the press-fitting head 5 to move, thereby achieving the press-fitting of the rolling bearing.
[0018] Please see Figure 1 A centering structure 6 is provided between the base 1 and the pressing table 3 to pre-fix the rolling bearing and the pressed component, ensuring that the rolling bearing and the pressed component are on the same axis. A sliding groove 62 is provided through the top of the base 1, and a sleeved frustum 61 is slidably installed in the sliding groove 62. Through slots are provided through the upper and lower ends of the pressing table 3, and the sleeved frustum 61 is slidably connected to the pressing table 3 through the through slots, allowing the sleeved frustum 61 to slide along the pressing table 3.
[0019] Furthermore, the sleeved frustum 61 has a structure that is smaller at the top and larger at the bottom, which allows the rolling bearing and the pressed component to be sleeved on the surface of the sleeved frustum 61. Because the sleeved frustum 61 has a structure that is smaller at the top and larger at the bottom, rolling bearings and pressed components with different inner diameters can be stably fixed on the surface of the sleeved frustum 61, so that the rolling bearing and the pressed component sleeved on the sleeved frustum 61 are on the same axis.
[0020] Please see Figure 2A second sliding groove 63 is provided at the bottom end of the through-hole sleeved frustum 61. A limiting rod 64 is fixedly installed at the bottom end of the first sliding groove 62. The limiting rod 64 is adapted to the second sliding groove 63, so that when the sleeved frustum 61 moves downward, the limiting rod 64 can move along the second sliding groove 63, making it more stable. At the same time, a support spring 65 is fixedly installed at the bottom end of the first sliding groove 62. The limiting rod 64 is sleeved on the surface of the support spring 65, and the top end of the support spring 65 contacts the top end of the second sliding groove 63. The support spring 65 provides support for the sleeved frustum 61, so that the sleeved frustum 61 is in the state of extending out of the pressing table 3 for operation. At the same time, the support spring 65 is located inside the limiting rod 64, which limits the movement of the support spring 65, so that the support spring 65 can only move along the limit rod 64.
[0021] Please see Figure 1 and Figure 3 The pressing table 3 is equipped with two sets of flattening mechanisms 7, which are arranged vertically along the surface of the pressing head 5. The two flattening mechanisms 7 are used to apply pressure evenly to both ends of the rolling bearing and the part to be pressed, so that the rolling bearing and the part to be pressed are in a vertical and horizontal state relative to the sleeve frustum 61 under pressure, thereby ensuring that the rolling bearing and the part to be pressed are in a centered state during pressing and that there is no misalignment.
[0022] Please see Figure 3 The flattening mechanism 7 includes two fixed seats 71, which are fixedly mounted on the surface of the pressing head 5. The two fixed seats 71 are symmetrically arranged relative to the pressing head 5. The symmetrical arrangement of the fixed seats 71 ensures that the center of gravity of the pressing head 5 and the connecting frustum 61 are still on the same axis. The fixed seats 71 do not affect the operation of the pressing head 5, and the pressure remains uniform when the pressing head 5 presses down. A sliding rod 72 is slidably connected through the upper and lower ends of the fixed seats 71. A return spring 73 is sleeved on the surface of the sliding rod 72, and the bottom end of the return spring 73 is fixedly connected to the top end of the fixed seat 71. The sliding rod 72 can move up and down along the fixed seat 71, and the return spring 73 plays a resetting role, so that the sliding rod 72 can automatically return to its original position after the work is completed, facilitating the next operation.
[0023] Please see Figure 4 and Figure 5 A pressing plate 74 is slidably installed at the bottom end of the slide rod 72. An adjusting plate 75 is slidably installed at the end of the pressing plate 74 away from the pressing head 5. The contact surface between the slide rod 72 and the pressing plate 74, and the contact surface between the adjusting plate 75 and the pressing plate 74, are all "T" shaped structures, which serve as a limit and allow the pressing plate 74 to slide relative to each other.
[0024] Furthermore, a lead screw 76 is threaded through the adjusting plate 75, and the lead screw 76 is rotatably connected to the fixed base 71. The lead screw 76 is a bidirectional threaded rod. When the lead screw 76 rotates, it can cause the two adjusting plates 75 to move away from or closer to each other. The displacement of the adjusting plates 75 causes the pressing plate 74 to move along the slide rod 72, thereby adjusting the position of the two pressing plates 74. This allows the pressing plate 74 to both press and level the rolling bearing or the pressed part, and also avoids interfering with the pressing operation. The lead screw 76 slides through the surface of the slide rod 72, ensuring that the lead screw 76 does not interfere with the vertical displacement of the slide rod 72.
[0025] An automatic centering device for a rolling bearing press-fitting machine, the working principle of which is as follows: The rolling bearing and the component to be pressed are fitted onto the fitting frustum 61, so that the rolling bearing, the component to be pressed, and the pressing head 5 are on the same axis. By rotating the lead screw 76, the lead screw 76 rotates and drives the two adjusting plates 75 to move away from or closer to each other. The displacement of the adjusting plates 75 drives the pressing plate 74 to move along the slide rod 72, thereby adjusting the position of the two pressing plates 74 so that the pressing plate 74 can contact the top of the rolling bearing or the component to be pressed.
[0026] The cylinder 4 is activated, causing the pressing head 5 to move downwards. The pressing head 5 then moves the extrusion plate 74 downwards. After the extrusion plate 74 contacts the rolling bearing or the component to be pressed, it applies pressure evenly to both ends of the rolling bearing or the component, ensuring that the rolling bearing and the component are leveled perpendicular to the axis of the connecting frustum 61 under uniform pressure from both sides. The pressing head 5 continues to move downwards. Under pressure, the extrusion plate 74 and the slide rod 72 move upwards along the fixed base 71 until the component to be pressed contacts the pressing table 33. The rolling bearing and the component then come into contact. The pressing head 5 continues to move downwards, pressing the connecting frustum 61 downwards along the slide groove 62, providing support for the pressing process. The pressing head 5 continues to move downwards, pressing the rolling bearing into the component, completing the pressing process.
[0027] After pressing is completed, cylinder 4 resets, pressing plate 74 automatically resets under the action of reset spring 73, and sleeve frustum 61 resets under the action of support spring 65, facilitating the next pressing.
[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic centering device for a rolling bearing press-fitting machine, comprising a base (1), a frame (2), and a press-fitting table (3), wherein a cylinder (4) is fixedly mounted on the top of the frame (2), and a press-fitting head (5) is fixedly mounted on the output shaft of the cylinder (4), characterized in that: A centering structure (6) is provided between the base (1) and the pressing table (3), the centering structure (6) includes a sleeved frustum (61); a flattening mechanism (7) is provided on the pressing table (3).
2. The automatic centering device for a rolling bearing press-fitting machine according to claim 1, characterized in that: A sliding groove (62) is provided at the top of the base (1). The sliding groove (62) is slidably connected to the sleeved round platform (61). The sleeved round platform (61) is slidably connected to the pressing platform (3) and the pressing platform (3). The sleeved round platform (61) has a structure that is smaller at the top and larger at the bottom.
3. The automatic centering device for a rolling bearing press-fitting machine according to claim 2, characterized in that: A second sliding groove (63) is provided at the bottom end of the sleeved truncated cone (61). A limiting rod (64) is fixedly installed at the bottom end of the first sliding groove (62). The limiting rod (64) is adapted to the second sliding groove (63). A support spring (65) is fixedly installed at the bottom end inside the first sliding groove (62). The limiting rod (64) is sleeved on the surface of the support spring (65). The top end of the support spring (65) is in contact with the top end inside the second sliding groove (63).
4. The automatic centering device for a rolling bearing press-fitting machine according to claim 1, characterized in that: The flattening mechanism (7) has two sets and is arranged vertically along the surface of the pressing head (5).
5. The automatic centering device for a rolling bearing press-fitting machine according to claim 4, characterized in that: The flattening mechanism (7) includes two fixed seats (71), which are fixedly installed on the surface of the pressing head (5). The two fixed seats (71) are symmetrically arranged relative to the pressing head (5). A sliding rod (72) is slidably connected through the upper and lower ends of the fixed seat (71). A return spring (73) is sleeved on the surface of the sliding rod (72). The bottom end of the return spring (73) is fixedly connected to the top end of the fixed seat (71).
6. The automatic centering device for a rolling bearing press-fitting machine according to claim 5, characterized in that: A pressing plate (74) is slidably installed at the bottom end of the slide rod (72), and an adjusting plate (75) is slidably installed at the end of the pressing plate (74) away from the pressing head (5), and a lead screw (76) is threaded through the adjusting plate (75).
7. The automatic centering device for a rolling bearing press-fitting machine according to claim 6, characterized in that: The lead screw (76) is rotatably connected to the fixed seat (71), and the lead screw (76) slides through the surface of the slide rod (72) and is slidably connected to the slide rod (72).
8. The automatic centering device for a rolling bearing press-fitting machine according to claim 1, characterized in that: The base (1) and the frame (2) are fixedly connected. The bottom of the frame (2) is fixedly connected to the pressing table (3). The top of the frame (2) is fixedly connected to the cylinder (4).