Accurate grinding machining device for motor rotor

Abstract

The utility model belongs to the technical field of rotor grinding, and particularly relates to a motor rotor accurate grinding machining device which comprises a containing groove body and a grinding mechanism, the grinding mechanism is arranged above the containing groove body and comprises a supporting plate, a motor is fixedly installed on one side of the supporting plate, a square shaft is fixedly installed at the output end of the motor, and the square shaft is fixedly installed on the other side of the supporting plate. The square shaft is rotationally connected with the supporting plate, and the outer surface of the square shaft is slidably connected with a grinding sleeve. According to the accurate grinding machining device for the motor rotor, a workpiece needing to be ground is placed in the sliding sleeve and slides to the position under the grinding mechanism, the grinding mechanism can transversely move relative to the workpiece needing to be ground, and the grinding mechanism comprises grinding rings different in surface roughness; under the action of the telescopic sleeve, the ground workpieces are in contact in sequence according to the roughness sequence, the square shaft can be driven to rotate through the motor, and therefore the grinding mechanism is driven to rotate, and the ground workpieces are accurately ground through the grinding ring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotor polishing technical field especially relates to a motor rotor fine grinding device. BACKGROUND

[0002] The magnet in the rotor plays a crucial role in the motor. The magnet in the rotor generates a magnetic field and interacts with the winding on the stator, thereby driving the rotor to rotate and outputting mechanical energy. This interaction is the basis for the operation of the motor. The smooth surface of the magnet helps to distribute the magnetic field more evenly, making the motor run more smoothly and efficiently. The smooth surface can also reduce eddy current loss.

[0003] For example, the Chinese patent with publication number CN217966272U discloses a magnetic ring burr polishing device, relating to the technical field of magnetic ring processing, comprising a polishing platform, a horizontal track is provided in the middle of the top surface of the polishing platform, and a side plate is provided at one end of the top surface of the polishing platform; a clamping mechanism is movably arranged in the horizontal track, and the clamping mechanism is used for clamping the magnetic ring; a polishing mechanism is arranged on the inner side of the side plate, and the polishing mechanism is used for polishing the magnetic ring burr; the clamping mechanism comprises a track slider, which is arranged in the horizontal track and is in mutual engagement with the horizontal track.

[0004] The clamping mechanism of this technical solution can clamp magnetic rings of different diameters, improving the applicability of the clamping mechanism. The polishing mechanism is provided with two groups of polishing shafts on the moving polishing heads, which are in contact with the inner and outer edges of the magnetic ring, respectively. The inner and outer circles of the magnetic ring can be polished simultaneously during polishing, improving the efficiency of magnetic ring burr polishing. Since the polishing heads that play a polishing role can move relatively, the polishing precision angle UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned technical problem, and provides a motor rotor fine grinding device, which can achieve high-precision polishing of the magnet.

[0006] Therefore, the utility model provides a motor rotor fine grinding device, which comprises a placing groove body and a polishing mechanism. The polishing mechanism is arranged above the placing groove body. The polishing mechanism comprises a support plate. A motor is fixedly installed on one side of the support plate. A square shaft is fixedly installed at the output end of the motor. The square shaft is rotationally connected with the support plate. A polishing sleeve is slidably connected with the outer surface of the square shaft. The polishing sleeve comprises multiple polishing rings with different roughnesses and the same width diameter. A connecting plate is fixedly installed on the side of the polishing sleeve close to the support plate. A limiting ring is fixedly installed on the side of the connecting plate close to the support plate. An extension sleeve is fixedly installed at one end of the support plate close to the limiting ring. A clamping ring is fixedly installed at the free end of the extension sleeve. The clamping ring is rotationally connected in the interior of the limiting ring.

[0007] Preferably, the number of placement grooves is one less than the number of grinding rings, and adjacent placement grooves are arranged symmetrically on the left and right.

[0008] Preferably, the placement groove includes an outer shell and a sliding sleeve. The sliding sleeve is slidably connected inside the outer shell. Limiting grooves are formed on both sides of the sliding sleeve. An extended sliding groove communicating with the limiting groove is fixedly installed on the upper surface of the outer shell. A friction block that contacts and slides relative to the polished workpiece is slidably connected above the extended sliding groove.

[0009] Preferably, the grinding sleeve is fixedly installed with symmetrically arranged limiting baffles between two adjacent grinding rings, and a rotating sleeve is rotatably connected between the two limiting baffles. Extending sliders are fixedly installed at both ends of the rotating sleeve, and sliding brackets are slidably connected to the outer side of the extending sliders.

[0010] Preferably, the rotating sleeve has an annular groove in the middle, an air jet hole connected to and penetrating the annular groove at the bottom end of the rotating sleeve, and an air intake pipe connected to and penetrating the top of the rotating sleeve.

[0011] Preferably, the number of telescopic sleeves is two, and the two telescopic sleeves are arranged symmetrically.

[0012] The beneficial effects of this utility model are:

[0013] 1. This motor rotor precision grinding device places the workpiece to be ground inside the sliding sleeve and slides it directly below the grinding mechanism. The grinding mechanism can move laterally relative to the workpiece to be ground. The grinding mechanism includes grinding rings with different surface roughness. Under the action of the telescopic sleeve, the grinding rings contact the workpieces to be ground in sequence according to the roughness. The motor can drive the square shaft to rotate, thereby driving the grinding mechanism to rotate, and the grinding rings are used to perform precision grinding on the workpiece.

[0014] 2. The motor rotor precision grinding device includes a placement tank comprising an outer shell and a sliding sleeve. The workpiece to be ground is placed inside the sliding sleeve, and after placement, it is locked in place and will not move. The sliding sleeve is slidably connected inside the outer shell. Limiting grooves are provided on both sides of the sliding sleeve. An extension groove communicating with the limiting groove is fixedly installed on the upper surface of the outer shell. By sliding the sliding sleeve, the extension groove is aligned with the limiting groove, thereby allowing the workpiece to be ground to separate from the grinding mechanism. A friction block is slidably connected above the extension groove, which contacts and slides relative to the workpiece after grinding. By pushing the friction block along the limiting groove and the extension groove with a constant initial force, friction occurs between the friction block and the workpiece. The surface of the workpiece is judged to be smooth by determining the stopping position of the friction block. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the placement of the trough in this utility model;

[0017] Figure 3 This is a half-sectional schematic diagram of the grinding sleeve in this utility model;

[0018] Figure 4 This is a schematic diagram of the support plate connection in this utility model;

[0019] Figure 5 This is a schematic diagram of the rotating sleeve connection in this utility model.

[0020] The markings in the diagram are as follows:

[0021] 1. Placement tank; 2. Grinding mechanism; 201. Support plate; 202. Motor; 203. Square shaft; 204. Grinding sleeve; 205. Grinding ring; 206. Connecting plate; 207. Limiting ring; 208. Telescopic sleeve; 209. Snap ring; 101. Outer shell; 102. Sliding sleeve; 103. Limiting groove; 104. Extension slide groove; 105. Friction block; 210. Limiting baffle; 211. Rotating sleeve; 212. Extension slider; 213. Sliding bracket; 214. Annular groove; 215. Jet nozzle; 216. Air inlet pipe. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] This application discloses a precision grinding apparatus for an electric motor rotor, including a placement tank 1 and a grinding mechanism 2. The grinding mechanism 2 is disposed above the placement tank 1 and includes a support plate 201. A motor 202 is fixedly mounted on one side of the support plate 201, and a square shaft 203 is fixedly mounted on the output end of the motor 202. The square shaft 203 is rotatably connected to the support plate 201, and a grinding sleeve 204 is slidably connected to the outer surface of the square shaft 203. The grinding sleeve 204 has a surface roughness with the same width and diameter. Multiple different grinding rings 205, a grinding sleeve 204 with a connecting plate 206 fixedly installed on the side near the support plate 201, a limiting ring 207 fixedly installed on the side of the connecting plate 206 near the support plate 201, a telescopic sleeve 208 fixedly installed on the end of the support plate 201 near the limiting ring 207, a support is provided at the bottom of the telescopic sleeve 208, and a snap ring 209 is fixedly installed on the free end of the telescopic sleeve 208, the snap ring 209 being rotatably connected inside the limiting ring 207.

[0025] In one embodiment, the number of placement grooves 1 is one less than the number of grinding rings 205, and adjacent placement grooves 1 are arranged symmetrically on the left and right. In this embodiment, there are three grinding rings 205 and two placement grooves 1. This arrangement allows all the workpieces in the placement grooves 1 to be ground.

[0026] In one embodiment, the placement tank 1 includes a housing 101 and a sliding sleeve 102. The workpiece to be ground is placed inside the sliding sleeve 102. After the workpiece is placed, it is locked with the workpiece and will not move. The sliding sleeve 102 is slidably connected inside the housing 101. Limiting grooves 103 are formed on both sides of the sliding sleeve 102. An extension groove 104 that communicates with the limiting groove 103 is fixedly installed on the upper surface of the housing 101. By sliding the sliding sleeve 102, the extension groove 104 is aligned with the limiting groove 103, thereby enabling the workpiece to be ground to be separated from the grinding mechanism 2. A friction block 105 that contacts and slides relative to the workpiece after grinding is slidably connected above the extension groove 104. By pushing the friction block 105 along the limiting groove 103 and the extension groove 104 with a constant initial force, friction occurs between the friction block 105 and the workpiece. The surface of the workpiece is judged to be smooth by determining the stopping position of the friction block 105.

[0027] In one embodiment, a symmetrically arranged limiting baffle 210 is fixedly installed between two adjacent grinding rings 205 on the grinding sleeve 204. A rotating sleeve 211 is rotatably connected between the two limiting baffles 210. An extension slider 212 is fixedly installed at both ends of the rotating sleeve 211. A sliding bracket 213 is slidably connected to the outer side of the extension slider 212. This arrangement can support the grinding sleeve 204, thereby preventing the square shaft 203 from falling under the action of gravity due to its long length and lack of support, which would cause the grinding sleeve 204 and the square shaft 203 to slide unsmoothly.

[0028] In one embodiment, the rotating sleeve 211 has an annular groove 214 in the middle, and an air jet hole 215 connected to and communicating with the annular groove 214 is provided at the bottom end of the rotating sleeve 211. An air inlet pipe 216 is connected to and communicates with the top of the rotating sleeve 211. With this arrangement, the air jet hole 215 can be used to blow air onto the surface of the workpiece being polished during the sliding process of the rotating sleeve 211, thereby enabling the particles formed by polishing to separate from the workpiece.

[0029] In one embodiment, there are two telescopic sleeves 208, which are symmetrically arranged to ensure that the grinding sleeve 204 is subjected to uniform force.

[0030] In this embodiment, a motor rotor fine grinding device is used such that the workpiece to be ground is placed inside the sliding sleeve 102 and slid directly below the grinding mechanism 2. The grinding mechanism 2 can move laterally relative to the workpiece to be ground. The grinding mechanism 2 includes grinding rings 205 with different surface roughness. Under the action of the telescopic sleeve 208, the grinding rings 205 contact the workpiece to be ground in order of roughness. The motor 202 drives the square shaft 203 to rotate, thereby driving the grinding mechanism 2 to rotate. The grinding rings 205 are used to fine grind the workpiece.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for fine grinding of an electric machine rotor, comprising a housing (1) and a grinding mechanism (2), characterized in that, The polishing mechanism (2) is arranged above the placing groove body (1); The polishing mechanism (2) comprises a supporting plate (201), one side of the supporting plate (201) is fixedly provided with a motor (202), the output end of the motor (202) is fixedly provided with a square shaft (203), the square shaft (203) is rotationally connected with the supporting plate (201), the outer surface of the square shaft (203) is slidably connected with a polishing sleeve (204), the polishing sleeve (204) comprises a plurality of polishing rings (205) with different roughnesses and same widths, the side of the polishing sleeve (204) close to the supporting plate (201) is fixedly provided with a connecting plate (206), the side of the connecting plate (206) close to the supporting plate (201) is fixedly provided with a limiting ring (207), one end of the supporting plate (201) close to the limiting ring (207) is fixedly provided with an elastic sleeve (208), the free end of the elastic sleeve (208) is fixedly provided with a clamping ring (209), and the clamping ring (209) is rotationally connected in the limiting ring (207).

2. A finishing device for electrical machine rotors as claimed in claim 1, characterized in that: The number of the placing groove bodies (1) is one less than the number of the polishing rings (205), and adjacent placing groove bodies (1) are symmetrically arranged.

3. A finishing device for a motor rotor as claimed in claim 2, characterized in that: The placing groove body (1) comprises an outer shell (101) and a sliding sleeve (102), the sliding sleeve (102) is slidably connected in the outer shell (101), the two sides of the sliding sleeve (102) are provided with limiting grooves (103), the upper surface of the outer shell (101) is fixedly provided with an extension sliding groove (104) in communication with the limiting grooves (103), and the upper side of the extension sliding groove (104) is slidably connected with a friction block (105) in contact with the polished workpiece and relatively sliding.

4. A device for finish grinding a motor rotor as defined in claim 1, wherein: The polishing sleeve (204) is fixedly provided with symmetrically arranged limiting baffles (210) between adjacent two polishing rings (205), two limiting baffles (210) are rotationally connected with a rotating sleeve (211), the two ends of the rotating sleeve (211) are fixedly provided with extension sliding blocks (212), and the outer sides of the extension sliding blocks (212) are slidably connected with sliding supports (213).

5. A finishing device for a motor rotor as defined in claim 4, characterized in that: The middle part of the rotating sleeve (211) is provided with an annular groove (214), the bottom end of the rotating sleeve (211) is provided with a gas injection hole (215) connected with the annular groove (214) and penetrating through, and the upper side of the rotating sleeve (211) is connected with and penetrates through an air inlet pipe (216).

6. A device for finish grinding of a rotor of an electrical machine according to any of claims 1-5, characterized in that: The number of the elastic sleeves (208) is two, and the two elastic sleeves (208) are symmetrically arranged.

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