Press fitting assembly in motor bearing pressing machine

Abstract

The utility model provides a press fitting assembly in a motor bearing pressing machine, and belongs to the technical field of machinery. The problem that an existing assembly is not stable in work is solved. According to the utility model, the motor comprises a cylindrical stator framework, the press-fitting assembly comprises a supporting seat, the supporting seat is provided with a positioning block matched with the stator framework, the stator framework is sleeved outside the positioning block, the top surface of the positioning block upwards supports the stator framework, and a round rod matched with a bearing in shape and size is vertically formed in the middle of the top surface of the positioning block. The stator framework sleeves the lower end of the round rod; the upper end of the round rod is slidably sleeved with a pressing pipe matched with the round rod in shape and size, and the top of the pressing pipe is closed. A spring enabling the pressing pipe to have the upward moving tendency is arranged between the pressing pipe and the round rod and located in an inner hole of the pressing pipe. The press-fitting assembly in the motor bearing pressing machine is stable in work.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a motor bearing press machine, especially a kind of pressure equipment subassembly in motor bearing press machine. BACKGROUND

[0002] Electric motor refers to the electromagnetic device according to electromagnetic induction law realizes electric energy conversion or transmission. Outer rotor motor is a certain type of electric motor, which generally includes a cylindrical stator framework, a stator assembly mounted on the stator framework, a central shaft arranged in the stator framework and a rotor assembly fixed to the central shaft, wherein the stator framework is connected to the central shaft through bearings, and the installation of the bearings is generally carried out by a bearing pressing device.

[0003] The existing motor bearing press machine such as the motor rotor bearing pressing tool disclosed in Chinese patent library (application number: 202420614630.7) includes a base and a pressing plate slidingly arranged on the base, a pressing sleeve is vertically fixed on the top wall of the base and the bottom wall of the pressing plate, and the two pressing sleeves are oppositely arranged, characterized in that the end portions of the two pressing sleeves adjacent to each other are annular steps, the annular steps are composed of an annular side wall and an annular bottom wall, an annular groove is formed in the annular side wall, and the annular groove is coaxially arranged with the pressing sleeve; an annular rubber ring with the same shape and size as the annular groove is clamped in the annular groove, and the inner edge of the rubber ring extends out of the annular groove; a guide plate is horizontally arranged between the two pressing sleeves, the guide plate is fixed on the base through a support, an arc-shaped notch with the same shape and size as the rotor core is vertically penetrated through the guide plate, and the arc-shaped notch and the pressing sleeve are coaxial; two guide rods are vertically fixed on the base, and the guide plate is between the two guide rods, two guide sleeves matched with the guide rods are fixed on the pressing plate, and the two guide sleeves are respectively sleeved on the two guide rods, a spring is sleeved on each guide rod, and the ends of the spring are respectively pressed on the base and the corresponding guide sleeve.

[0004] In the above tool, the spring is completely exposed, which has the risk of being stuck by hard impurities, thereby affecting the bearing pressing. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a pressure equipment subassembly in motor bearing press machine, which solves the technical problem of how to improve the pressing stability.

[0006] The utility model discloses a press -fitting assembly in motor bearing press machine, and the motor includes the stator framework of cylinder shape, and the press -fitting assembly includes the support seat, and the support seat has the locating block matched with the stator framework, and the stator framework is sleeved on the outside of the locating block, and the top surface of the locating block supports the stator framework upwards, and its characterized in that, the top surface middle part of the locating block is vertically formed with the round bar that shape and size are matched with the bearing, and the stator framework is sleeved on the outside of the lower end of the round bar, and the upper end of the round bar is slidably sleeved with the pressure pipe that shape and size are matched with the round bar, and the pressure pipe top is closed, and the spring that makes the pressure pipe have the trend of moving upwards is arranged between the pressure pipe and the round bar, and the spring is in the pressure pipe hole.

[0007] In actual product, the motor bearing press machine still includes the pressing plate that is horizontally arranged directly above the pressure pipe, and the pressing plate is driven to lift by the driving part such as air cylinder, oil cylinder.

[0008] When using, first, the pressure pipe is taken off and the bearing is sleeved on the round bar, then is sleeved into the pressure pipe again, and then the bearing is pressed into the stator framework by the pressure pipe that is pushed by the pressing plate and overcomes the spring elastic force.

[0009] The pressure pipe is sleeved on the round bar and the upper end of the pressure pipe is closed, so that the relatively closed space is formed between the pressure pipe and the round bar to accommodate the spring, so that the external factors can be effectively avoided to interfere with the spring extension and contraction movement, the stable working of the whole press -fitting process is ensured, and the stable working advantage is obtained.

[0010] Meanwhile, the pressure pipe for pressing the bearing is additionally arranged on the round bar, so that the movement precision of the pressing plate assembly for pushing the pressure pipe downwards can be effectively reduced, and the press -fitting process is more stable.

[0011] In the press -fitting assembly in the motor bearing press machine, the both ends of the spring are respectively pressed on the top wall of the pressure pipe and the round bar.

[0012] In the press -fitting assembly in the motor bearing press machine, the locating groove is vertically arranged on the top wall of the round bar, and the lower end of the spring is pressed on the bottom wall of the locating groove.

[0013] In the press -fitting assembly in the motor bearing press machine, the vertical section of the top surface of the round bar is the outer convex arc shape, so that the probability of impurities entering the locating groove is reduced, and the press -fitting stability is further improved.

[0014] In the pressing assembly of the motor bearing pressing machine, the bearing comprises an inner ring, the inner wall of the upper end port of the inner ring is a tapered surface, a guide ring is formed on the bottom wall of the pressing pipe, the outer wall of the guide ring is tapered and matches the tapered surface, and the outer wall of the guide ring can tightly contact the tapered surface. The outer wall of the guide ring and the inner wall of the upper end port of the inner ring are tapered and match each other, which is used for correcting the relative position of the pressing pipe and the bearing, improving the position accuracy of the bearing, and further ensuring the stability of the pressing.

[0015] In the pressing assembly of the motor bearing pressing machine, the pressing pipe is of an integral structure.

[0016] Compared with the prior art, the pressing assembly of the motor bearing pressing machine has the following advantages:

[0017] 1. The pressing pipe is sleeved on the round rod and the upper end of the pressing pipe is closed, so that a relatively closed space is formed between the pressing pipe and the round rod to accommodate the spring, which can effectively avoid the interference of external factors on the extension and contraction of the spring, ensure the stable operation of the entire pressing process, and has the advantage of stable operation.

[0018] 2. The pressing pipe for pressing the bearing is additionally arranged on the round rod, which can effectively reduce the movement accuracy of the pressing plate assembly for pushing the pressing pipe downward, and make the pressing process more stable.

[0019] 3. The outer wall of the guide ring and the inner wall of the upper end port of the inner ring are tapered and match each other, which is used for correcting the relative position of the pressing pipe and the bearing, improving the position accuracy of the bearing, and further ensuring the stability of the pressing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the motor bearing pressing machine.

[0021] Figure 2 is a sectional view of the pressing assembly of the motor bearing pressing machine.

[0022] Figure 3 is Figure 2 is an enlarged view of A in the motor bearing pressing machine.

[0023] In the figure, 1 is a stator framework, 1a is a limiting seat, 2 is a bearing, 2a is a tapered surface, 3 is a supporting seat, 3a is a positioning block, 3b is a round rod, 3c is a positioning groove, 3d is a bolt hole, 4 is a pressing pipe, 4a is a guide ring, 5 is a spring, and 6 is a pressing plate. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0025] The motor is an outer rotor motor, and the motor comprises a cylindrical stator frame 1. A motor bearing pressing machine is used to press the bearings 2 into the stator frame 1. The stator frame 1 needs to be pressed into the bearings 2 at both ends, and the inner wall of the middle part of the stator frame 1 is formed with a limiting seat 1a for supporting the bearings 2.

[0026] As shown in Figure 1 and Figure 2 , the motor bearing pressing machine comprises a pressing assembly, which comprises a supporting seat 3 provided with a positioning block 3a matched with the stator frame 1. The stator frame 1 is sleeved outside the positioning block 3a, and the top surface of the positioning block 3a supports the stator frame 1 upward. In actual use, when the first bearing 2 is pressed in, the bottom wall of the limiting seat 1a is pressed on the top surface of the positioning block 3a to support the stator frame 1 upward; when the second bearing 2 is pressed in, the first bearing 2 is pressed on the top surface of the positioning block 3a to support the stator frame 1 upward.

[0027] As shown in Figure 2 , the top surface of the positioning block 3a is vertically formed with a round rod 3b matched in shape and size with the inner ring of the bearing 2. The round rod 3b and the positioning block 3a are coaxially arranged, and the outer diameter of the round rod 3b is smaller than the outer diameter of the positioning block 3a. At this time, the stator frame 1 is sleeved outside the lower end of the round rod 3b. A pressing pipe 4 matched in shape and size with the round rod 3b is slidably sleeved on the upper end of the round rod 3b, and the top of the pressing pipe 4 is closed. A spring 5 is arranged between the pressing pipe 4 and the round rod 3b to make the pressing pipe 4 have a tendency to move upward, and the spring 5 is in the inner hole of the pressing pipe 4.

[0028] In actual products, the motor bearing pressing machine also comprises a pressing plate 6 horizontally arranged above the pressing pipe 4, which is driven to rise and fall by a driving member such as a pneumatic cylinder or an oil cylinder.

[0029] In use, the pressing pipe 4 is first removed and the bearing 2 is sleeved on the round rod 3b, then the pressing pipe 4 is sleeved again, and then the pressing plate 6 pushes the pressing pipe 4 to move downward against the elastic force of the spring 5 to press the bearing 2 into the stator frame 1.

[0030] The pressing pipe 4 is sleeved on the round rod 3b, and the upper end of the pressing pipe 4 is closed, so that a relatively closed space is formed between the pressing pipe 4 and the round rod 3b to accommodate the spring 5. In this way, external factors can be effectively prevented from interfering with the extension and contraction of the spring 5, ensuring that the entire pressing process is stable, and having the advantage of stable work.

[0031] At the same time, the pressing pipe 4 for pressing the bearing 2 is additionally arranged on the round rod 3b, which effectively reduces the movement precision of the pressing plate 6 assembly for pushing the pressing pipe 4 to move downward, and makes the pressing process more stable.

[0032] In this embodiment,

[0033] The spring 5 is installed as follows: the two ends of the spring 5 are respectively pressed against the top wall of the pressing pipe 4 and the circular rod 3b. It is further explained that the top wall of the circular rod 3b is vertically provided with a positioning groove 3c, the positioning groove 3c and the circular rod 3b are coaxially arranged, and the lower end of the spring 5 is pressed against the bottom wall of the positioning groove 3c. The positioning groove 3c for accommodating the spring 5 is arranged on the circular rod 3b, which can shorten the length of the spring 5 extending out of the positioning groove 3c without affecting the sliding of the pressing pipe 4, reduce the obstruction when the bearing 2 is sleeved into the circular rod 3b, and further facilitate use. Preferably, the size of the positioning groove 3c is matched with the spring 5 to guide the extension and contraction of the spring 5, so that the extension and contraction of the spring 5 is more stable.

[0034] Further, the vertical section of the top surface of the circular rod 3b is an outward convex circular arc shape, so as to reduce the probability of impurities entering the positioning groove 3c and further improve the pressing stability.

[0035] As shown in Figure 2 and Figure 3 , the type of the bearing 2 is a common ball bearing 2, which includes an inner ring, the inner wall at the upper port of the inner ring is a tapered surface 2a, and the diameter of the tapered surface 2a gradually decreases from top to bottom. The bottom wall of the pressing pipe 4 is formed with a guide ring 4a, and the guide ring 4a and the pressing pipe 4 are coaxially arranged. The outer wall of the guide ring 4a is tapered and matched with the tapered surface 2a, that is, the outer diameter of the guide ring 4a gradually decreases from top to bottom, and the outer wall of the guide ring 4a can tightly fit the tapered surface 2a. The outer wall of the guide ring 4a and the inner wall of the upper port of the inner ring are tapered and matched with each other, which is used to correct the relative position of the pressing pipe 4 and the bearing 2, improve the position accuracy of the bearing 2, and further ensure the pressing stability.

[0036] In the actual product, the support seat 3 is provided with vertical bolt holes 3d around the support seat 3, which facilitates the disassembly and assembly of the support seat 3.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A press assembly in a motor press bearing machine, the motor comprising a cylindrical stator frame (1), the press assembly comprising a support base (3) having a positioning block (3a) matching the stator frame (1), the stator frame (1) being sleeved outside the positioning block (3a), and the top surface of the positioning block (3a) supporting the stator frame (1) upwardly, characterized in that, The middle part of the top surface of the positioning block (3a) is vertically formed with a round rod (3b) matching the bearing (2) in shape and size, and the stator framework (1) is sleeved outside the lower end of the round rod (3b); the upper end of the round rod (3b) is slidably sleeved with a pressing pipe (4) matching the round rod (3b) in shape and size, and the top of the pressing pipe (4) is closed; a spring (5) is arranged between the pressing pipe (4) and the round rod (3b) to make the pressing pipe (4) have an upward moving tendency, and the spring (5) is in the inner hole of the pressing pipe (4).

2. The press-fit assembly in an electric machine press bearing machine of claim 1, wherein, The two ends of the spring (5) are respectively pressed against the top wall of the pressing pipe (4) and the round rod (3b).

3. The press-fit assembly in an electric machine press bearing machine of claim 2, wherein, A positioning groove (3c) is vertically formed on the top wall of the round rod (3b), and the lower end of the spring (5) is pressed against the bottom wall of the positioning groove (3c).

4. A press pack assembly for use in an electric machine press bearing machine according to claim 1 or 2 or 3, wherein, The vertical section of the top surface of the round rod (3b) is an outward convex circular arc.

5. The press-fit assembly in an electric machine press bearing machine of claim 1, wherein, The inner wall of the inner ring of the bearing (2) at the upper end port is a tapered surface (2a), a guide ring (4a) is formed on the bottom wall of the pressing pipe (4), the outer wall of the guide ring (4a) is tapered and matches the tapered surface (2a), and the outer wall of the guide ring (4a) can tightly contact the tapered surface (2a).

6. The press-fit assembly in an electric machine press bearing machine of claim 5, wherein, The pressing pipe (4) is of an integral structure.

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