Efficient and labor-saving bearing in-place tool

Abstract

The utility model discloses an efficient labor-saving bearing in-place tool which comprises an end cover fixing base and a horizontal bottom plate which are sequentially connected from top to bottom. An inverted-T-shaped cavity is formed in the center of the end cover fixing base, and a bearing downward-pressing inserting piece capable of moving up and down is arranged in the cavity. A bearing positioning boss is arranged on the end surface of the exposed end of the bearing pressing insert; compared with the press-in mode of a hand plate press, the press-in mode has the advantages that the risk of product damage is greatly reduced, meanwhile, the use of force is reduced, the working efficiency is improved, the fatigue of operators is reduced, the labor cost is reduced, and compared with the use of a servo press, the cost of the tool is reduced by more than ten times.

Description

Technical Field

[0001] This utility model relates to a high-efficiency and labor-saving bearing positioning tool. Background Technology

[0002] There are various assembly processes in the production of servo motors. Some types of bearings are assembled with the rotor and then pressed into the bearing housing of the end cover. Other types of bearings are pre-pressed into the end cover.

[0003] Current assembly methods involve placing the end cap flat and the bearing on top of the bearing housing. Although the bearing and bearing housing have a clearance fit, the clearance is 0-0.024mm. Without equipment, it's difficult to ensure perfect concentricity between the bearing and end cap, and it's also impossible to guarantee perfect parallelism between the bearing surface and the bearing housing surface. Due to these form and position deviations, even with some gaps between the products, assembly cannot be easily completed. Current methods involve placing the end cap flat, manually positioning the bearing along its rounded corners above the bearing housing, maintaining a roughly horizontal position, and using a ring-shaped metal jig to press against the inner ring of the bearing, applying a vertically downward force (usually using a hand-operated press / servo press). This force counteracts friction between the bearing housing and the bearing's inner bore, and also corrects any misalignment of the bearing during the pressing process, until the bearing is fully pressed into the bearing housing. However, in some cases, the pressure fails to correct the bearing's position during the pressing process. The bearing maintains a significant positional deviation from the bearing housing throughout the pressing process, generating greater friction. This results in a larger force applied from top to bottom, causing damage to the bearing and end cap during pressing, ultimately rendering the product unusable. Using a servo press can provide pressure limit protection, offering more reliable product protection, but it is more expensive, less efficient, and has higher maintenance costs. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an efficient and labor-saving bearing installation fixture that ensures the bearing and end cover are level and concentric.

[0005] The technical solution for realizing this utility model is as follows:

[0006] A high-efficiency and labor-saving bearing placement fixture includes an end cap fixing base and a horizontal base plate connected sequentially from top to bottom; the end cap fixing base has an inverted T-shaped cavity in the center, and a bearing pressing plug that can move up and down is provided in the cavity; the exposed end face of the bearing pressing plug is provided with a bearing positioning boss.

[0007] A return spring is provided between the bottom surface of the bearing pressing insert and the bottom surface of the cavity.

[0008] The end cap fixing base is provided with an end cap positioning boss on the end face away from the horizontal base plate.

[0009] The horizontal base plate and the end cap fixing base are connected by a set of locking screws.

[0010] The movable end of the bearing pressing insert inserted into the cavity is provided with a limiting protrusion that mates with the top surface of the cavity.

[0011] The end cap positioning boss has a raised annular plane in the center.

[0012] Two guide rods are provided opposite each other on the contact surface of the limiting protrusion ring and the top surface of the cavity, and springs are provided on the outer sleeve of the guide rods; two guide grooves are provided opposite each other on the top surface of the cavity to cooperate with the guide rods.

[0013] By adopting the above technical solution, pressure is no longer used to press the bearing down during the pressing process. The tooling itself fixes the shape and position of the bearing and end cover, keeping them horizontal and concentric. An internal spring mechanism allows the bearing to automatically enter the bearing chamber of the end cover with just a gentle press. Compared to manual press-fitting, this significantly reduces the risk of product damage, reduces the amount of force used, improves work efficiency, reduces operator fatigue, and lowers labor costs. Furthermore, compared to using a servo press, the tooling cost is reduced by more than ten times. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] In the attached diagram, 1 is the end cap fixing base, 2 is the horizontal base plate, 3 is the cavity, 4 is the bearing pressing insert, 5 is the bearing positioning boss, 6 is the reset spring, 7 is the end cap positioning boss, 8 is the locking screw, 9 is the limiting protrusion ring, 10 is the annular plane, 11 is the guide rod, and 12 is the spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] See Figure 1The diagram shows a high-efficiency, labor-saving bearing placement fixture, comprising an end cap fixing base 1 and a horizontal base plate 2 connected sequentially from top to bottom. The end cap fixing base has an inverted T-shaped cavity 3 in the center, within which a vertically movable bearing pressing insert 4 is provided. The bearing pressing insert serves two purposes: first, it fixes the bearing's horizontal and concentric position via a positioning boss; second, the bearing pressing insert can slide within the base, driving the bearing into the end cap. The inner holes of the insert and the end cap positioning boss are precisely machined to ensure their concentricity. The exposed end face of the bearing pressing insert has a bearing positioning boss 5. Since the positioning boss structure is precision machined according to a reference surface and reference axis, and its dimensions are consistent with the bearing's inner hole dimensions, placing the bearing on the positioning boss ensures that the bearing and the insert's reference surface and reference axis remain horizontal and concentric. The base plate, base, and plug-in components fit together tightly to ensure that the bearings and end caps are level and concentric through structures such as positioning bosses (the bearing plug-in ensures that the bearings are level and concentric with the reference surface and reference axis; the end cap positioning boss ensures that the end caps are level and concentric with the reference surface and reference axis; the assembly of the bearing plug-in and the end cap positioning boss will make their reference axes and reference surfaces coincide, achieving reference unification and indirectly ensuring the level and concentricity of the bearings and end caps), and allow for adjustable allowable offset.

[0019] A return spring 6 is provided between the bottom surface of the bearing pressing insert and the bottom surface of the cavity. The return spring can play a role in automatic reset.

[0020] An end cap positioning boss 7 is provided on the end face of the end cap fixing base away from the horizontal base plate. The positioning boss fixes the horizontal and concentric position of the end cap.

[0021] The horizontal base plate and the end cap fixing base are connected by a set of locking screws. The locking screw set consists of several locking screws 8 evenly distributed on the horizontal base surface.

[0022] The movable end of the bearing pressing insert, which is inserted into the cavity, is provided with a limiting protrusion 9 that mates with the top surface of the cavity. The limiting protrusion prevents the bearing pressing insert from being pulled out of the cavity.

[0023] The end cap positioning boss has a raised annular plane 10 in the center.

[0024] Two guide rods 11 are arranged opposite each other on the contact surface between the limiting protrusion ring and the top surface of the cavity, and springs are sleeved on the guide rods; two guide grooves 12 are arranged opposite each other on the top surface of the cavity to cooperate with the guide rods. One end of the spring is fixed to the contact surface of the limiting protrusion ring, and the other end is fixed to the top surface of the cavity. The two springs and the reset spring are arranged in a triangle, and the springs assist the reset spring in guiding and resetting, so as to make the reset position more accurate.

Claims

1. A high-efficiency, labor-saving bearing placement fixture, characterized in that, It includes an end cap fixing base and a horizontal base plate connected from top to bottom; the end cap fixing base has an inverted T-shaped cavity in the center, and a bearing pressing plug that can move up and down is provided in the cavity; the exposed end face of the bearing pressing plug has a bearing positioning boss.

2. The high-efficiency, labor-saving bearing placement fixture according to claim 1, characterized in that, A return spring is provided between the bottom surface of the bearing pressing insert and the bottom surface of the cavity.

3. The high-efficiency, labor-saving bearing placement fixture according to claim 1, characterized in that, The end cap fixing base is provided with an end cap positioning boss on the end face away from the horizontal base plate.

4. The high-efficiency, labor-saving bearing placement fixture according to claim 1, characterized in that, The horizontal base plate and the end cap fixing base are connected by a set of locking screws.

5. The high-efficiency, labor-saving bearing placement fixture according to claim 1, characterized in that, The movable end of the bearing pressing insert inserted into the cavity is provided with a limiting protrusion that mates with the top surface of the cavity.

6. The high-efficiency, labor-saving bearing placement fixture according to claim 3, characterized in that, The end cap positioning boss has a raised annular plane in the center.

7. The high-efficiency, labor-saving bearing placement fixture according to claim 5, characterized in that, Two guide rods are provided opposite each other on the contact surface of the limiting protrusion ring and the top surface of the cavity, and springs are provided on the outer sleeve of the guide rods; two guide grooves are provided opposite each other on the top surface of the cavity to cooperate with the guide rods.

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