Motor rotor bearing pressing tool

Abstract

The utility model provides a bearing pressing tool for a motor rotor, and belongs to the technical field of machinery. The problem that an existing tool is not practical is solved. The motor rotating shaft bearing pressing tool comprises a base and a pressing plate arranged on the base in an up-down sliding mode, pressing sleeves are vertically fixed to the top wall of the base and the bottom wall of the pressing plate, the adjacent ends of the two pressing sleeves are annular steps, each annular step is composed of an annular side wall and an annular bottom wall, and an annular groove is formed in the annular side wall; a rubber ring matched with the annular groove in shape and size 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 notch matched with an iron core of a rotor in shape and size vertically penetrates through the guide plate, and the central axes of the arc notch and the pressing sleeves are collinear. The bearing pressing tool for the rotating shaft of the motor is practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a bearing pressing tool, in particular to a motor rotor bearing pressing tool. Background Art

[0002] The motor rotor bearing press tooling is an important device used for press-fitting motor rotor bearings. Its main function is to accurately press-fit the bearings onto the motor rotor to ensure a tight and accurate fit between the bearings and the rotor, thereby improving the operating efficiency and stability of the motor.

[0003] Existing bearing pressing tooling, such as a rotor end bearing pressing device disclosed in the China Patent Library (application number: 202010728598.1), includes an upper bearing positioning column for fixing the upper bearing workpiece and a lower bearing positioning column for fixing the lower bearing workpiece, the lower end of the upper bearing positioning column is provided with an upper top point coaxial with the upper bearing positioning column, the upper end of the lower bearing positioning column is provided with a lower top point coaxial with the lower bearing positioning column, the upper top point and the lower top point are arranged relatively to each other and can be elastically retracted, the upper top point and the lower top point can move relatively, the upper bearing positioning column is provided with a first annular top block for supporting the upper bearing workpiece, and the lower bearing positioning column is provided with a second annular top block for supporting the lower bearing workpiece; the first annular top block is provided with a plurality of permanent magnets for adsorbing the upper bearing workpiece.

[0004] In the above-mentioned press-fitting equipment, the first annular top block uses a permanent magnet to magnetically absorb the bearing to be press-fitted, but this method can only be used for magnets made of magnetic conductive materials, and is ineffective for bearings made of non-magnetic conductive materials such as plastic and austenitic stainless steel, resulting in a narrow range of use of the entire press-fitting equipment and poor practicality. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a motor rotor bearing pressing tool with good practicability.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a motor rotor bearing press tooling, including a base and a pressure plate slidably arranged on the base, the top wall of the base and the bottom wall of the pressure plate are vertically fixed with a press sleeve, and the two press sleeves are arranged opposite to each other, characterized in that the adjacent ends of the two press sleeves are both annular steps, the annular step is composed of an annular side wall and an annular bottom wall, an annular groove is opened on the annular side wall, and the annular groove and the press sleeve are coaxially arranged; a rubber ring whose shape and size match 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 press sleeves, the guide plate is fixed to the base through a bracket, and a circular arc notch whose shape and size match the iron core of the rotor is vertically penetrated on the guide plate, and the central axes of the circular arc notch and the press sleeve are collinear.

[0007] During actual installation, the driving device is connected to the pressure plate to drive the pressure plate to rise and fall; when in use, the bearing is placed in the annular step and pressed on the annular bottom wall, at which time the rubber ring holds the bearing for pre-positioning; then the iron core of the rotor is inserted into the arc notch, and the lower end of the rotor shaft is pressed on the lower bearing, and then the pressure plate is moved downward to press the lower end of the shaft into the lower bearing and the upper bearing into the upper end of the shaft, so as to simultaneously press the bearings at both ends of the shaft, which has the advantages of easy use and high efficiency.

[0008] The present application utilizes a rubber ring disposed in a press sleeve to clamp the bearing and pre-position the bearing in the annular step. This method can be adapted to bearings of different materials, has a wide adaptability range, and is highly practical.

[0009] In the above motor rotor bearing fixture, a top hole is radially penetrated on the side wall of the press sleeve, and one end of the top hole is connected to the corresponding annular groove. The top hole is provided so that the rubber ring can be pushed out by the top hole when in use, which is convenient for replacing the rubber ring.

[0010] In the above-mentioned motor rotor bearing fixture, the axial cross section of the rubber ring is T-shaped. The rubber ring includes a clamping ring and a positioning ring formed on the outer wall of the clamping ring and matching the annular groove. The positioning ring is clamped in the annular groove, the clamping ring is outside the annular groove, and the axial length of the clamping ring is greater than the axial length of the positioning ring. In actual use, the clamping ring is used to clamp the bearing, and the axial length of the clamping ring is set to be greater than the axial length of the positioning ring, which can effectively increase the contact area between the clamping ring and the bearing, so that the bearing is more stably positioned in the annular step, ensuring the stable operation of the fixture.

[0011] In the above-mentioned motor rotor pressure bearing fixture, a skeleton made of metal material is embedded in the clamping ring, and the skeleton is in a ring shape coaxial with the rubber ring. The insertion of the skeleton provides stronger support for the side wall of the clamping ring, so that the clamping ring is closer to the outer wall of the bearing, and the fixture runs more stably.

[0012] In the above motor rotor bearing fixture, both ends of the outer wall of the positioning ring are tapered guide surfaces, and the two guide surfaces are symmetrically arranged along the center of the rubber ring. The guide surface plays a guiding role, allowing the positioning ring to enter the annular groove more smoothly, which is convenient for installation.

[0013] In the above-mentioned motor rotor pressure bearing tooling, the pressing sleeve includes an outer sleeve and a cylindrical top core coaxially arranged in the outer sleeve. The two outer sleeves are detachably fixed to the pressure plate and the base respectively. The outer side surface of the top core is attached to the inner side surface of the outer sleeve. The above-mentioned annular step is formed between one end surface of the top core and the corresponding inner wall of the outer sleeve. The other ends of the two top cores are clamped and positioned between the base and the corresponding outer sleeve or the pressure plate and the corresponding outer sleeve. In this way, the top core can be easily removed after removing the outer sleeve, which is convenient for maintenance and replacement to adapt to bearings of different sizes.

[0014] In the above-mentioned motor rotor bearing press tooling, the base and the pressure plate are both fixed with a pressure ring, and the two end faces of the two top cores that are far away from each other are pressed tightly on the two pressure rings respectively, an annular limiting seat is formed on the outer wall of the top core, an annular limiting surface is formed on the inner wall of the outer sleeve, and the end face of the limiting seat close to the annular step is pressed tightly on the limiting surface. With the cooperation of the pressure ring and the limiting surface, the top core can be stably positioned to ensure the stable operation of the tooling.

[0015] In the above-mentioned motor rotor bearing press tooling, the two outer sleeves are pressed on the pressure plate and the base respectively, and the two outer sleeves are detachably fixed to the pressure plate and the base by a circle of screws, which has the advantages of simple structure and easy installation.

[0016] In the above-mentioned motor rotor bearing fixture, two guide rods are vertically fixed on the base, and the guide plate is located between the two guide rods. Two guide sleeves matching the guide rods are fixed on the pressure plate, and the two guide sleeves are respectively mounted on the two guide rods to ensure that the pressure plate can move smoothly and accurately.

[0017] In the above-mentioned motor rotor bearing press tooling, each guide rod is sleeved with a spring, and the two ends of the spring are respectively pressed on the base and the corresponding guide sleeve, so that the pressure plate moves down slowly, reducing the damage and noise caused by the press collision.

[0018] Compared with the prior art, the motor rotor bearing press tooling has the following advantages:

[0019] 1. The present application utilizes a rubber ring disposed in a press sleeve to hold the bearing tightly and pre-position the bearing in the annular step. This method can be adapted to bearings of different materials, has a wide adaptation range, and is highly practical.

[0020] 2. The introduction of the skeleton provides stronger support for the side wall of the clamping ring, making the clamping ring closer to the outer wall of the bearing and making the tooling run more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the motor rotor pressure bearing tooling.

[0022] Figure 2 It is a cross-sectional schematic diagram of the motor rotor pressure bearing fixture when in use.

[0023] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0024] In the figure, 1, base; 2, pressure plate; 3, pressure sleeve; 3a, annular step; 3b, top hole; 3c, outer sleeve; 3d, top core; 3d1, limit seat; 4, rubber ring; 4a, clamping ring; 4b, positioning ring; 4b1, introduction surface; 4c, skeleton; 5, guide plate; 5a, arc notch; 6, rotor; 7, pressure ring; 8, guide rod; 9, guide sleeve; 10, spring; 11, bearing. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 As shown, the motor rotor bearing press tooling includes a base 1 and a press plate 2 slidably arranged on the base 1, and press sleeves 3 are vertically fixed on the top wall of the base 1 and the bottom wall of the press plate 2, and the two press sleeves 3 are arranged opposite to each other.

[0027] in,

[0028] like Figure 2 and Figure 3 As shown, the adjacent ends of the two pressing sleeves 3 are both annular steps 3a, which are composed of an annular side wall and an annular bottom wall. An annular groove is provided on the annular side wall, and the annular groove is coaxially arranged with the pressing sleeve 3; a rubber ring 4 whose shape and size match the annular groove is clamped in the annular groove, and the inner edge of the rubber ring 4 extends out of the annular groove. A guide plate 5 is horizontally arranged between the two pressing sleeves 3, and the guide plate 5 is fixed on the base 1 through a bracket. A circular arc notch 5a whose shape and size match the iron core of the rotor 6 is vertically penetrated on the guide plate 5, and the central axes of the circular arc notch 5a and the pressing sleeve 3 are collinear.

[0029] During actual installation, the driving device is connected to the pressure plate 2 to drive the pressure plate 2 to rise and fall; when in use, the bearing 11 is placed in the annular step 3a and pressed on the annular bottom wall. At this time, the rubber ring 4 holds the bearing 11 for pre-positioning; then the iron core of the rotor 6 is inserted into the arc notch 5a, and the lower end of the shaft of the rotor 6 is pressed on the lower bearing 11, and then the pressure plate 2 moves downward to press the lower end of the shaft into the lower bearing 11 and the upper bearing 11 into the upper end of the shaft, so as to simultaneously press the bearings 11 at both ends of the shaft, which has the advantages of easy use and high efficiency.

[0030] The present application utilizes the rubber ring 4 disposed in the press sleeve 3 to hold the bearing 11 tightly and pre-position the bearing 11 in the annular step 3a. This method can be adapted to bearings 11 of different materials, has a wide adaptation range, and is more practical.

[0031] Further explanation, a top hole 3b is radially penetrated on the side wall of the pressing sleeve 3, and one end of the top hole 3b is connected to the corresponding annular groove. The top hole 3b is provided so that the rubber ring 4 can be pushed out with the help of the top hole 3b when in use, so as to facilitate the replacement of the rubber ring 4.

[0032] In this embodiment,

[0033] like Figure 3As shown, the specific structure of the rubber ring 4 is as follows: the axial cross section of the rubber ring 4 is T-shaped, and the rubber ring 4 includes a clamping ring 4a and a positioning ring 4b formed on the outer wall of the clamping ring 4a and matching the annular groove. The positioning ring 4b is clamped in the annular groove, and the clamping ring 4a is outside the annular groove, and the axial length of the clamping ring 4a is greater than the axial length of the positioning ring 4b. In actual use, the clamping ring 4a is used to clamp the bearing 11, and the axial length of the clamping ring 4a is set to be greater than the axial length of the positioning ring 4b, which can effectively increase the contact area between the clamping ring 4a and the bearing 11, so that the bearing 11 is more stably positioned in the annular step 3a, ensuring the stable operation of the tooling.

[0034] Further explanation:

[0035] A skeleton 4c made of metal material is embedded in the clamping ring 4a, and the skeleton 4c is annular and coaxial with the rubber ring 4. The insertion of the skeleton 4c provides stronger support for the side wall of the clamping ring 4a, so that the clamping ring 4a is closer to the outer wall of the bearing 11, and the tooling runs more stably. Among them, the metal skeleton 4c is generally made of stainless steel.

[0036] The outer side walls of both ends of the positioning ring 4b are tapered introduction surfaces 4b1, and the two introduction surfaces 4b1 are symmetrically arranged along the center of the rubber ring 4. The introduction surfaces 4b1 play a guiding role, allowing the positioning ring 4b to enter the annular groove more smoothly, which is convenient for installation.

[0037] like Figure 2 As shown, the structure of the press sleeve 3 is as follows: it includes an outer sleeve 3c and a cylindrical top core 3d coaxially arranged in the outer sleeve 3c, and the outer side of the top core 3d is attached to the inner side of the outer sleeve 3c. Among them, the annular groove and the top hole 3b are both arranged on the outer sleeve 3c; the two outer sleeves 3c are detachably fixed to the pressing plate 2 and the base 1 respectively, and the above-mentioned annular step 3a is formed between one end face of the top core 3d and the inner wall of the corresponding outer sleeve 3c, and the other ends of the two top cores 3d are clamped and positioned between the base 1 and the corresponding outer sleeve 3c or the pressing plate 2 and the corresponding outer sleeve 3c, so that the top core 3d can be easily removed after the outer sleeve 3c is removed, which is convenient for maintenance and replacement to adapt to bearings 11 of different sizes.

[0038] Among them, it is preferred that the two outer sleeves 3c are pressed on the pressing plate 2 and the base 1 respectively, and the two outer sleeves 3c are detachably fixedly connected to the pressing plate 2 and the base 1 through a circle of screws, which has the advantages of simple structure and easy installation.

[0039] The clamping method of the top core 3d is as follows: a pressure ring 7 is fixed on both the base 1 and the pressure plate 2, and the two end faces of the two top cores 3d that are far away from each other are respectively pressed against the two pressure rings 7, an annular limiting seat 3d1 is formed on the outer wall of the top core 3d, an annular limiting surface is formed on the inner wall of the outer sleeve 3c, and the end face of the limiting seat 3d1 close to the annular step 3a is pressed against the limiting surface. With the cooperation of the pressure ring 7 and the limiting surface, the top core 3d can be stably positioned to ensure the stable operation of the tooling.

[0040] The sliding mode of the pressing plate 2 is as follows: two guide rods 8 are vertically fixed on the base 1, and the guide plate 5 is between the two guide rods 8. Two guide sleeves 9 matching the guide rods 8 are fixed on the pressing plate 2, and the two guide sleeves 9 are respectively sleeved on the two guide rods 8 to ensure that the pressing plate 2 can move smoothly and accurately. Further explanation, each guide rod 8 is sleeved with a spring 10, and the two ends of the spring 10 are respectively pressed on the base 1 and the corresponding guide sleeve 9, so that the pressing plate 2 moves down slowly, reducing the damage and noise caused by the press-fit collision.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A motor rotor bearing press tooling, comprising a base (1) and a press plate (2) slidably arranged on the base (1), a press sleeve (3) being vertically fixed on the top wall of the base (1) and the bottom wall of the press plate (2), and the two press sleeves (3) being arranged opposite to each other, characterized in that: The adjacent ends of the two pressing sleeves (3) are both annular steps (3a), the annular steps (3a) being composed of an annular side wall and an annular bottom wall, the annular side wall being provided with an annular groove, and the annular groove being coaxially arranged with the pressing sleeve (3); a rubber ring (4) having a shape and size matching the annular groove is clamped in the annular groove, and the inner edge of the rubber ring (4) extends out of the annular groove; a guide plate (5) is horizontally arranged between the two pressing sleeves (3), the guide plate (5) being fixed to the base (1) through a bracket, and a circular arc notch (5a) having a shape and size matching the iron core of the rotor (6) is vertically penetrated on the guide plate (5), and the central axes of the circular arc notch (5a) and the pressing sleeve (3) are colinear.

2. The motor rotor bearing fixture according to claim 1, characterized in that: A top hole (3b) is radially penetrated through the side wall of the pressing sleeve (3), and one end of the top hole (3b) is connected to the corresponding annular groove.

3. The motor rotor bearing fixture according to claim 1 or 2, characterized in that: The axial cross section of the rubber ring (4) is T-shaped. The rubber ring (4) comprises a clamping ring (4a) and a positioning ring (4b) formed on the outer side wall of the clamping ring (4a) and matching the annular groove. The positioning ring (4b) is clamped in the annular groove, the clamping ring (4a) is located outside the annular groove, and the axial length of the clamping ring (4a) is greater than the axial length of the positioning ring (4b).

4. The motor rotor bearing fixture according to claim 3, characterized in that: A skeleton (4c) made of a metal material is embedded in the clamping ring (4a), and the skeleton (4c) is in a ring shape coaxial with the rubber ring (4).

5. The motor rotor bearing fixture according to claim 3, characterized in that: The outer side walls at both ends of the positioning ring (4b) are both tapered introduction surfaces (4b1), and the two introduction surfaces (4b1) are symmetrically arranged along the center of the rubber ring (4).

6. The motor rotor bearing fixture according to claim 1, characterized in that: The pressing sleeve (3) comprises an outer sleeve (3c) and a cylindrical top core (3d) coaxially arranged in the outer sleeve (3c); the two outer sleeves (3c) are detachably fixed to the pressing plate (2) and the base (1), respectively; the outer side surface of the top core (3d) is attached to the inner side surface of the outer sleeve (3c); the above-mentioned annular step (3a) is formed between one end surface of the top core (3d) and the inner wall of the corresponding outer sleeve (3c); the other ends of the two top cores (3d) are respectively clamped and positioned between the base (1) and the corresponding outer sleeve (3c) or the pressing plate (2) and the corresponding outer sleeve (3c).

7. The motor rotor bearing fixture according to claim 6, characterized in that: A pressing ring (7) is fixed on both the base (1) and the pressing plate (2), and the two end faces of the two top cores (3d) that are separated from each other are respectively pressed tightly against the two pressing rings (7), an annular limiting seat (3d1) is formed on the outer wall of the top core (3d), an annular limiting surface is formed on the inner wall of the outer sleeve (3c), and the end face of the limiting seat (3d1) close to the annular step (3a) is pressed tightly against the limiting surface.

8. The motor rotor bearing fixture according to claim 6, characterized in that: The two outer sleeves (3c) are respectively pressed on the pressing plate (2) and the base (1), and the two outer sleeves (3c) are detachably fixedly connected to the pressing plate (2) and the base (1) via a circle of screws.

9. The motor rotor bearing fixture according to claim 1, characterized in that: Two guide rods (8) are vertically fixed on the base (1), and the guide plate (5) is located between the two guide rods (8). Two guide sleeves (9) matching the guide rods (8) are fixed on the pressure plate (2), and the two guide sleeves (9) are respectively sleeved on the two guide rods (8).

10. The motor rotor bearing press tooling according to claim 9, characterized in that: A spring (10) is sleeved on each guide rod (8), and two ends of the spring (10) are pressed on the base (1) and the corresponding guide sleeve (9) respectively.

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