Driving device, grinding and polishing device and polishing machine

Abstract

The utility model discloses a driving device, a grinding and polishing device and a polishing machine, an outer rotor motor is used for driving a main shaft to rotate, the structure is simplified, the outer rotor motor can bear larger load, and the driving device comprises the outer rotor motor and the main shaft used for being connected with a polishing grinding head. The outer rotor motor comprises a base, a stator, an outer rotor shell and a hollow shaft, the stator is fixed to the base, the outer rotor shell is located outside the stator, the hollow shaft is located on an inner ring of the stator, the hollow shaft is rotationally connected with the base, the outer rotor shell is fixedly connected with the hollow shaft, and the outer rotor shell is fixedly connected with the hollow shaft. And the main shaft penetrates through the hollow shaft and is in transmission connection with the hollow shaft.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polishing equipment technical field, more specifically, it relates to a kind of driving device, polishing device and polishing machine. BACKGROUND

[0002] Patent CN202221624379.X proposes a polishing grinding head driving device, comprising: main shaft for connecting polishing grinding head;Bearing seat, which is sleeved on the outer main shaft and is rotatably connected with the main shaft;And direct drive motor, the stator is fixedly connected to the bearing seat, the rotor is sleeved on the outer main shaft and is drivingly connected with the main shaft;

[0003] The above-mentioned driving device adopts direct drive motor to drive the rotation of the main shaft, according to its description and the description of the drawings, it adopts inner rotor motor, the structure is complex, it is very troublesome to maintain, and the load that can be borne is relatively small, cannot satisfy the actual application of polishing ceramic tile. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of driving device, polishing device and polishing machine, the rotation of the main shaft is driven by outer rotor motor, the structure is simplified, and outer rotor motor can bear greater load.

[0005] According to the first aspect of the utility model, a kind of driving device is provided, including outer rotor motor and the main shaft for connecting polishing grinding head, the outer rotor motor includes base, stator, outer rotor shell and hollow shaft, the stator is fixed on the base, the outer rotor shell is located the outside of the stator, the hollow shaft is located the inner ring of the stator, the hollow shaft is rotatably connected with the base, the outer rotor shell is fixedly connected with the hollow shaft, and the main shaft passes through the hollow shaft and is drivingly connected with the hollow shaft.

[0006] In the above-mentioned driving device, it further includes bearing seat, the bearing seat is fixedly connected with the base, and bearing set is arranged in the bearing seat, the bearing set includes at least one bearing, and the main shaft is rotatably connected with the bearing set.

[0007] In the above-mentioned driving device, inner sleeve is arranged in the bearing seat, and the inner sleeve cooperates with the inner ring of the bearing set, so that the inner sleeve can rotate.

[0008] The inner side of the inner sleeve is fixedly provided with a bushing, the bushing is drivingly connected with the main shaft, and the main shaft can slide relative to the bushing along the axial direction.

[0009] In the above-mentioned driving device, the inner sleeve is drivingly connected with the hollow shaft.

[0010] In the driving device, the hollow shaft is internally provided with a first key groove, the two ends of the first key groove along the axial direction of the hollow shaft are open ends, the inner sleeve is fixed with a first connecting key, and the first connecting key is in transmission connection with the first key groove.

[0011] In the driving device, the inner side of the bushing is provided with a second key groove, the two ends of the second key groove along the axial direction of the hollow shaft are open ends, the main shaft is provided with a second connecting key, and the second connecting key is in transmission connection with the second key groove.

[0012] In the driving device, the hollow shaft is internally provided with a first key groove, the two ends of the first key groove along the axial direction of the hollow shaft are open ends, the inner side of the bushing is provided with a second key groove, the two ends of the second key groove along the axial direction of the hollow shaft are open ends, the main shaft is provided with a third connecting key, and the third connecting key is in transmission connection with the first key groove and the second key groove, respectively.

[0013] In the driving device, the bushing is two, and the two bushings are arranged at the two ends of the inner sleeve along the axial direction of the main shaft.

[0014] In the driving device, the bearing seat is provided with two bearing groups, and the two bearing groups are arranged at the two ends of the bearing seat along the axial direction of the main shaft.

[0015] In the driving device, a driving member is further included, and the driving member drives the main shaft to move along the axial direction thereof.

[0016] According to the second aspect of the present application, a polishing and grinding device is provided, which comprises a polishing grinding head and the driving device according to the first aspect, and the driving device is used for mounting and driving the polishing grinding head.

[0017] According to the third aspect of the present application, a polishing machine is provided, which comprises a plurality of polishing and grinding devices according to the second aspect.

[0018] The technical solution of the present application has at least one of the following advantages or beneficial effects:

[0019] In the present application, an outer rotor motor is used to drive the main shaft to rotate, the outer rotor motor has simple structure and is convenient to maintain; compared with an inner rotor motor of the same size, the outer rotor motor can bear larger load and is more suitable for the actual application scene of polishing and grinding, and high-power polishing and grinding can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in combination with the drawings and embodiments.

[0021] Figure 1is a structural schematic view of the embodiment 1 of the utility model;

[0022] Figure 2 is the structure of the embodiment 1 of the utility model Figure 1 is the partial enlarged view of A of

[0023] Figure 3 is the structural section view of the embodiment 1 of the utility model;

[0024] Figure 4 is the structure of the embodiment 1 of the utility model Figure 3 is the partial enlarged view of B of;

[0025] Figure 5 is the cooperation schematic view of the main shaft and the bushing of the embodiment 1 of the utility model;

[0026] Figure 6 is a structural schematic view of the embodiment 2 of the utility model;

[0027] Figure 7 is the structure of the embodiment 2 of the utility model Figure 6 is the partial enlarged view of C of;

[0028] Figure 8 is the structural section view of the embodiment 2 of the utility model;

[0029] Figure 9 is the structure of the embodiment 2 of the utility model Figure 8 is the partial enlarged view of D of.

[0030] Wherein, the reference numerals of each figure:

[0031] 1, outer rotor motor;11, base;12, stator;13, outer rotor shell;14, hollow shaft;141, first keyway;2, main shaft;21, second connecting key;22, third connecting key;3, bearing seat;31, bearing set;32, inner sleeve;321, first connecting key;33, bushing;331, second keyway;4, driving piece. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0033] The following disclosure provides many different embodiments or examples for implementing different aspects of the utility model.

[0034] Referring to Figures 1 to 5As shown, a driving device comprises an outer rotor motor 1 and a main shaft 2 for connecting a polishing grinding head, the outer rotor motor 1 comprises a base 11, a stator 12, an outer rotor shell 13 and a hollow shaft 14, the stator 12 is fixed on the base 11, the outer rotor shell 13 is located outside the stator 12, the hollow shaft 14 is located in the inner ring of the stator 12, the hollow shaft 14 is rotationally connected with the base 11, the outer rotor shell 13 is fixedly connected with the hollow shaft 14, the main shaft 2 passes through the hollow shaft 14 and is drivingly connected with the hollow shaft 14, the outer rotor shell 13, the stator 12, the hollow shaft 14 and the main shaft 2 are coaxially arranged;

[0035] The stator 12 cooperates with the outer rotor shell 13 to enable the outer rotor shell 13 to rotate, thereby driving the hollow shaft 14 to rotate, and the main shaft 2 is drivingly connected with the hollow shaft 14, so that the main shaft 2 can rotate under the driving of the hollow shaft 14, thereby driving the polishing grinding head to rotate and perform grinding and polishing work.

[0036] The outer rotor motor 1 has simple structure and is convenient to maintain; compared with an inner rotor motor of the same size, the outer rotor motor 1 can bear greater load and is more suitable for actual application scenarios of grinding and polishing, and can realize high-power grinding and polishing.

[0037] In the embodiment, a bearing seat 3 is further included, the bearing seat 3 is fixedly connected with the base 11, and a bearing set 31 is arranged in the bearing seat 3, the bearing set 31 comprises at least one bearing;

[0038] An inner sleeve 32 is arranged in the bearing seat 3, the inner sleeve 32 cooperates with the inner ring of the bearing set 31 to enable the inner sleeve 32 to rotate, and the inner sleeve 32 is drivingly connected with the hollow shaft 14;

[0039] A bushing 33 is fixed to the inner side of the inner sleeve 32, the bushing 33 is drivingly connected with the main shaft 2, and the main shaft 2 can slide relative to the bushing 33 in the axial direction thereof;

[0040] The hollow shaft 14 drives the inner sleeve 32 to rotate, the inner sleeve 32 drives the main shaft 2 to rotate, and the bearing set 31 can support the rotation of the inner sleeve 32 and thus support the operation of the main shaft 2; the bushing 33 is used to bear the abrasion caused by the sliding of the main shaft 2.

[0041] Specifically, a first key groove 141 is arranged on the inner side of the hollow shaft 14, both ends of the first key groove 141 in the axial direction of the hollow shaft 14 are open ends, a first connecting key 321 is fixed to the inner sleeve 32, the first connecting key 321 is drivingly connected with the first key groove 141, and the hollow shaft 14 can drive the inner sleeve 32 to rotate by means of the first connecting key 321;

[0042] The inner side of the bushing 33 is provided with a second key groove 331, both ends of the second key groove 331 along the axial direction of the hollow shaft 14 are open ends, the main shaft 2 is provided with a second connecting key 21, the second connecting key 21 is in transmission connection with the second key groove 331, the bushing 33 can drive the main shaft 2 to rotate by the second connecting key 21, and the two ends of the second key groove 331 are open, so that the main shaft 2 can slide along the axial direction.

[0043] In the embodiment, the bushing 33 is two, the two bushings 33 are respectively arranged at the two ends of the inner sleeve 32 along the axial direction of the main shaft 2, and the bushing 33 close to the outer rotor motor 1 is provided with the second key groove 331; the bearing seat 3 is provided with two bearing groups 31, the two bearing groups 31 are respectively arranged at the two ends of the bearing seat 3 along the axial direction of the main shaft 2, and can well support the rotation of the inner sleeve 32, so as to more stably support the main shaft 2, and the main shaft 2 is more stable in the process of rotation and sliding.

[0044] In the embodiment, the driving member 4 is further included, the driving member 4 drives the main shaft 2 to move along the axial direction, and the main shaft 2 drives the polishing grinding head to contact or leave the ceramic tile; the driving member 4 is a worm gear assembly, a pneumatic cylinder or an oil cylinder.

[0045] In the embodiment, a grinding and polishing device is further provided, which includes the polishing grinding head and the above-mentioned driving device, the driving device is used for mounting and driving the polishing grinding head, the bearing seat 3 is fixed on the rack or cross beam of the grinding and polishing device, the base 11 is fixed on the bearing seat 3, and the polishing grinding head is connected with the main shaft 2.

[0046] In the grinding and polishing device, the main shaft 2 can be vertically arranged, the main shaft 2 is lifted to make the polishing grinding head grind and polish the surface of the ceramic tile; or the main shaft 2 can be horizontally arranged, the main shaft 2 is horizontally moved to make the polishing grinding head grind and polish the side surface of the ceramic tile, that is, edge grinding operation.

[0047] In the embodiment, a polishing machine is further provided, which includes a plurality of the above-mentioned grinding and polishing devices.

[0048] Embodiment 2

[0049] Referring to Figures 6 to 9 Fig. 1 shows a driving device, which includes an outer rotor motor 1 and a main shaft 2 for connecting a polishing grinding head, the outer rotor motor 1 includes a base 11, a stator 12, an outer rotor shell 13 and a hollow shaft 14, the stator 12 is fixed on the base 11, the outer rotor shell 13 is located outside the stator 12, the hollow shaft 14 is located in the inner ring of the stator 12, the hollow shaft 14 is in rotational connection with the base 11, the outer rotor shell 13 is fixedly connected with the hollow shaft 14, the main shaft 2 passes through the hollow shaft 14 and is in transmission connection with the hollow shaft 14, and the outer rotor shell 13, the stator 12, the hollow shaft 14 and the main shaft 2 are coaxially arranged;

[0050] The bearing seat 3 is fixedly connected with the base 11, the bearing seat 3 is provided with a bearing set 31, the bearing set 31 comprises at least one bearing, the bearing seat 3 is provided with an inner sleeve 32, the inner sleeve 32 is matched with the inner ring of the bearing set 31, so that the inner sleeve 32 can rotate;

[0051] The inner side of the inner sleeve 32 is fixedly provided with a bushing 33, the inner side of the hollow shaft 14 is provided with a first key groove 141, the two ends of the first key groove 141 along the axial direction of the hollow shaft 14 are open ends, the inner side of the bushing 33 is provided with a second key groove 331, the two ends of the second key groove 331 along the axial direction of the hollow shaft 14 are open ends, the main shaft 2 is provided with a third connecting key 22, the third connecting key 22 is drivingly connected with the first key groove 141 and the second key groove 331 respectively, the hollow shaft 14 is directly drivingly connected with the main shaft 2, the transmission efficiency is high, the bushing 33 is drivingly connected with the main shaft 2, so that the inner sleeve 32 can support the rotation of the main shaft 2, and the two ends of the first key groove 141 and the second key groove 331 are open, the main shaft 2 can slide relative to the bushing 33 along the axial direction thereof;

[0052] In practice, the cooperation between the first key groove 141 and the third connecting key 22 can be clearance fit or transition fit, and torque can be transmitted, the precision of the bushing 33 is relatively high, and the bushing 33 can assist the sliding of the main shaft 2, the bushing 33 is wear-resistant, and the main shaft 2 slides while the bushing 33 is worn, which reduces the damage of the hollow shaft 14, and if the bushing 33 is seriously worn, the inner sleeve 32 can be replaced to replace a new bushing 33.

[0053] Preferably, the structures of the first key groove 141, the second key groove 331 and the third connecting key 22 can be spline transmission structures.

[0054] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A drive device characterized by comprising: The device includes an external rotor motor and a spindle for connecting a polishing head. The external rotor motor includes a base, a stator, an external rotor housing, and a hollow shaft. The stator is fixed on the base, the external rotor housing is located outside the stator, the hollow shaft is located inside the stator, the hollow shaft is rotatably connected to the base, the external rotor housing is fixedly connected to the hollow shaft, and the spindle passes through the hollow shaft and is drively connected to the hollow shaft.

2. The drive apparatus according to claim 1, characterized by It also includes a bearing housing, which is fixedly connected to the base. The bearing housing is provided with a bearing assembly, which includes at least one bearing. The main shaft is rotatably connected to the bearing assembly.

3. The drive apparatus according to claim 2, characterized by The bearing housing is provided with an inner sleeve, which mates with the inner ring of the bearing assembly to allow the inner sleeve to rotate. A bushing is fixed to the inner side of the inner sleeve. The bushing is connected to the main shaft for transmission. The main shaft can slide relative to the bushing along its axial direction.

4. The drive apparatus according to claim 3, characterized by The inner sleeve is connected to the hollow shaft via a transmission.

5. The drive apparatus according to claim 4, characterized by The hollow shaft is provided with a first keyway on its inner side. Both ends of the first keyway along the axial direction of the hollow shaft are open. A first connecting key is fixed on the inner sleeve. The first connecting key is connected to the first keyway in a transmission manner.

6. The drive apparatus according to claim 5, characterized by The bushing has a second keyway on its inner side. Both ends of the second keyway along the axial direction of the hollow shaft are open. The main shaft has a second connecting key, which is connected to the second keyway in a transmission manner.

7. The drive apparatus according to claim 3, characterized by The hollow shaft has a first keyway on its inner side, and both ends of the first keyway along the axial direction of the hollow shaft are open ends. The bushing has a second keyway on its inner side, and both ends of the second keyway along the axial direction of the hollow shaft are open ends. The main shaft has a third connecting key, which is connected to the first keyway and the second keyway in a transmission manner.

8. The drive apparatus according to claim 3, characterized by There are two bushings, which are respectively disposed at both ends of the inner sleeve along the axial direction of the main shaft.

9. The drive apparatus according to claim 2, characterized by The bearing housing is provided with two bearing assemblies, which are located at both ends of the bearing housing along the axial direction of the main shaft.

10. The drive apparatus according to claim 1, characterized by It also includes a drive unit that drives the spindle to move along its axial direction.

11. A polishing apparatus characterized by comprising: It includes a polishing head and a drive device as described in any one of claims 1-10, the drive device being used to mount and drive the polishing head.

12. A polishing machine characterized by, It includes multiple grinding and polishing devices as described in claim 11.

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