A polishing machine

Abstract

The utility model discloses a polishing machine relates to polishing equipment technical field, and polishing machine includes drive arrangement and is used to replace the first work head module and second work head module of use, and drive arrangement includes pivot, first work head module with second work head module all with pivot detachable connection, first work head module with second work head module all include work head, when first work head module with pivot link, the axis of work head of first work head module is consistent with the axis of pivot, when second work head module with pivot link, the axis of work head of second work head module is parallel with the axis of pivot. By changing the different work head module, can polish machine switching into concentric polishing machine or eccentric polishing machine, realizes different polishing operation demand, need not preparing two sets of polishing machine simultaneously, is favorable for reducing use cost.

Description

Technical Field

[0001] This utility model relates to the field of polishing equipment technology, and in particular to a polishing machine. Background Technology

[0002] Polishing machines, also known as grinding machines, are commonly used for mechanical grinding and polishing. A polishing machine generally includes a drive unit, a working head, and a transmission mechanism connecting the drive unit and the working head. The drive unit is, for example, an electric motor or a pneumatic motor. The power of the drive unit drives the working head to rotate through the transmission mechanism, and the working head contacts the workpiece to grind the workpiece surface.

[0003] Polishing machines can be divided into concentric polishing machines and eccentric polishing machines. In a concentric polishing machine, the axis of the working head coincides with the axis of the drive unit's rotation shaft, while in an eccentric polishing machine, the axis of the working head is parallel to the axis of the drive unit's rotation shaft. Each type of polishing machine has its own advantages. For example, concentric polishing machines have stronger cutting force and are suitable for handling deeper scratches and imperfections, while eccentric polishing machines can reduce heat generation and the formation of glare on the paint surface, making them more suitable for fine polishing.

[0004] When performing polishing operations, users need to prepare both concentric and eccentric polishing machines, and switch to the appropriate polishing machine for different scenarios, which is costly.

[0005] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects.

[0006] The above content is only used to help understand the technical solution of this application and does not constitute an admission that the above is prior art. Utility Model Content

[0007] The purpose of this invention is to provide a polishing machine to reduce its operating costs.

[0008] To achieve the above-mentioned objectives, this utility model proposes a polishing machine, comprising:

[0009] Drive mechanism, including a rotating shaft; and,

[0010] A first working head module and a second working head module are used for replacement purposes. Both the first working head module and the second working head module are detachably connected to the rotating shaft. Both the first working head module and the second working head module include a working head.

[0011] When the first working head module is connected to the rotating shaft, the axis of the working head of the first working head module is aligned with the axis of the rotating shaft.

[0012] When the second working head module is connected to the rotating shaft, the axis of the working head of the second working head module is parallel to the axis of the rotating shaft.

[0013] Furthermore, both the first working head module and the second working head module include a transmission mechanism connected to the working head, and the transmission mechanism includes a connecting seat that is detachably connected to the rotating shaft.

[0014] Furthermore, the connecting seat and the rotating shaft are connected by fasteners; or,

[0015] The connecting seat is threadedly connected to the rotating shaft; or...

[0016] The connecting seat is engaged with the rotating shaft.

[0017] Furthermore, the end face of the rotating shaft facing the working head is provided with a threaded hole, and the connection between the connecting seat and the rotating shaft is achieved by fasteners passing through the connecting seat and connecting to the threaded hole.

[0018] Furthermore, the first working head module and the second working head module also include connectors for connecting to the working head;

[0019] The connector of the first working head module is fixed relative to the connector base;

[0020] The connector of the second working head module is rotatably connected to the connecting seat.

[0021] Furthermore, the connecting seat includes a base plate and an outer ring extending from the outer edge of the base plate toward the side where the working head is located. The second working head module also includes a bearing disposed within the outer ring, and the connecting member is connected to the bearing.

[0022] Furthermore, the connector of the first working head module is detachably connected to the connector seat of the first working head module.

[0023] Furthermore, the connecting seat and the connecting member are threaded together.

[0024] Furthermore, the connecting seat includes a threaded hole and a limiting hole communicating with the threaded hole, the limiting hole being closer to the rotating shaft than the threaded hole, and the connecting member includes a collar connected to the threaded hole and a limiting part adapted to the limiting hole, the diameter of the limiting part being smaller than the diameter of the collar.

[0025] Furthermore, the connector abuts against the connector seat in the axial direction of the rotating shaft.

[0026] Furthermore, the connecting seat has a stepped portion, the limiting hole is located within the stepped portion, and the collar abuts against the stepped portion; or,

[0027] The limiting hole is provided with a support step, and the surface of the connector facing the rotating shaft abuts against the support step.

[0028] Furthermore, the transmission mechanism also includes a retaining ring connected to the connecting seat, the retaining ring being located on the side of the collar facing the working head, and the projection of the retaining ring along the axial direction of the rotating shaft being at least partially located on the end face of the collar facing the working head.

[0029] Furthermore, the polishing machine also includes a housing connected to the end of the drive device and a heat sink located inside the housing. A gas flow channel is formed between the housing and the heat sink. The housing is provided with an air inlet communicating with the gas flow channel. The working head is located at the open end of the housing and forms an air outlet gap with the housing. Both the first working head module and the second working head module include impellers.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] According to at least one embodiment of this utility model, a polishing machine includes a drive device and a first working head module and then a second working head module for replacement use. Both the first and second working head modules are detachably connected to a rotating shaft. When the first working head module is connected to the rotating shaft, the axis of the working head of the first working head module is aligned with the axis of the rotating shaft; when the second working head module is connected to the rotating shaft, the axis of the working head of the second working head module is parallel to the axis of the rotating shaft. By using different working head modules, the polishing machine can be switched to a concentric polishing machine or an eccentric polishing machine to meet different polishing operation needs, eliminating the need to prepare two sets of polishing machines simultaneously, thus reducing operating costs. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of a polishing machine according to some embodiments of this utility model.

[0033] Figure 2a This is a cross-sectional schematic diagram of a polishing machine according to some embodiments of this utility model.

[0034] Figure 2b yes Figure 2a The diagram shows the upper part of the polishing machine.

[0035] Figure 2c yes Figure 2a The diagram shows the lower part of the polishing machine.

[0036] Figure 3a This is a cross-sectional schematic diagram of a polishing machine according to some embodiments of this utility model.

[0037] Figure 3b yes Figure 3a A schematic diagram of the upper part of the polishing machine shown.

[0038] Figure 3c yes Figure 3b A schematic diagram of the lower part of the polishing machine shown.

[0039] Figure 4 yes Figure 2a A three-dimensional schematic diagram of the transmission mechanism.

[0040] Figure 5 yes Figure 4 A sectional view of the transmission mechanism.

[0041] Figure 6 yes Figure 3a A three-dimensional schematic diagram of the transmission mechanism.

[0042] Figure 7 yes Figure 6 A sectional view of the transmission mechanism.

[0043] Figure 8 yes Figure 2b Enlarged view of section I in the middle.

[0044] Figure 9 This is a schematic diagram showing the connection between the rotating shaft and the connecting seat in some embodiments of this utility model.

[0045] Figure 10 This is a schematic diagram showing the connection between the rotating shaft and the connecting seat in some embodiments of this utility model.

[0046] Figure 11 This is a cross-sectional schematic diagram of the transmission mechanism in some embodiments of this utility model.

[0047] Figure 12 This is a schematic diagram showing the separation of the working head and transmission mechanism in some embodiments of this utility model.

[0048] Figure 13 This is a schematic diagram showing the positions of the outer shell and heat sink in some embodiments of this utility model. Detailed Implementation

[0049] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0050] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] Some embodiments of this utility model propose a polishing machine, such as... Figures 1 to 7 As shown, it includes a drive device 1, a first working head module 2a, and a second working head module 2b.

[0053] The drive device 1 may include, for example, an electric motor or a pneumatic motor, which has a rotating shaft 10 and is capable of generating rotational motion. Figure 1 , Figure 2a and Figure 3a In the illustrated embodiment, the shaft 10 of the drive device 1 extends to both ends, and a working head module is provided at both ends of the polishing machine, enabling polishing operations to be performed at both ends. It is understood that in other embodiments, the shaft 10 of the drive device 1 may extend only from one end, and the polishing machine may have a working head module at only one end.

[0054] The first working head module 2a and the second working head module 2b can be used interchangeably. Both are detachably connected to the rotating shaft 10. When it is necessary to replace the working head module, the working head module connected to the rotating shaft 10 can be removed and the required working head module can be installed. Figure 2a A schematic diagram is shown when the first working head module 2a is installed at both ends of the polishing machine. Figure 3a A schematic diagram is shown when the second working head module 2b is installed at both ends of the polishing machine.

[0055] Both the first working head module 2a and the second working head module 2b include a working head 20, which can be driven to rotate by the driving device 1. Depending on the actual situation, the working head 20 can directly contact the workpiece to perform the grinding operation, or a working attachment (such as sandpaper) can be set on the surface of the working head 20, and the grinding operation can be performed by contacting the workpiece through the working attachment.

[0056] like Figure 2a , Figure 2b and Figure 2c As shown, Figure 2b and Figure 2c They are shown respectively Figure 2a A schematic diagram of the upper and lower parts of the polishing machine. When the first working head module 2a is connected to the rotating shaft 10, the axis 200 of the working head 20 of the first working head module 2a is consistent with the axis 100 of the rotating shaft 10. At this time, the working head 20 and the rotating shaft 10 rotate coaxially, and the polishing machine is a concentric polishing machine.

[0057] like Figure 3a , Figure 3b and Figure 3c As shown, Figure 3b and Figure 3c They are shown respectively Figure 3a A schematic diagram of the upper and lower parts of the polishing machine. When the second working head module 2b is connected to the rotating shaft 10, the axis 200 of the working head 20 of the second working head module 2b is parallel to the axis 100 of the rotating shaft 10. The two are eccentrically set. At this time, the working head 20 rotates as a whole around the axis of the rotating shaft 10, and the polishing machine is an eccentric polishing machine.

[0058] By using different working head modules, the polishing machine can be switched between a concentric polishing machine and an eccentric polishing machine to meet different polishing needs, eliminating the need to prepare two sets of polishing machines simultaneously and reducing operating costs. Furthermore, if a working head module is damaged, it can be replaced to continue using the machine, further reducing operating costs.

[0059] In some embodiments, both the first working head module 2a and the second working head module 2b include a transmission mechanism 3 connected to the working head 20, and the transmission mechanism 3 includes a connecting seat 30 detachably connected to the rotating shaft 10. Figure 4 A perspective view of the transmission mechanism 3 of the first working head module 2a in some embodiments is shown. Figure 5 It shows Figure 4 The cross-sectional schematic diagram of the transmission mechanism 3 shown. Figure 6 A perspective view of the transmission mechanism 3 of the second working head module 2b in some embodiments is shown. Figure 7 It shows Figure 6 The diagram shows a cross-sectional view of the second working head module 2b.

[0060] The structure of the detachable connection between the rotating shaft 10 and the connecting seat 30 is not limited, and several feasible embodiments are given below.

[0061] As one possible embodiment, the connecting seat 30 and the rotating shaft 10 are connected by fasteners (not shown), such as bolts or screws. Figure 8As shown, the end face 101 of the rotating shaft 10 facing the working head 20 is provided with a threaded hole 102. The connecting seat 30 includes a base plate 300 and an outer ring 301 extending from the outer edge of the base plate 300 toward the side where the working head 20 is located. Fasteners pass through the base plate 300 of the connecting seat 30 and are connected to the threaded hole 102, thereby realizing the connection between the connecting seat 30 and the rotating shaft 10. Optionally, the connecting seat 30 is provided with a positioning hole 307 adapted to the end of the rotating shaft 10. The rotating shaft 10 is fitted into the positioning hole 307, which can reduce the radial shear force on the fastener and ensure the reliability of the connection.

[0062] As another feasible embodiment, the connecting seat 30 and the rotating shaft 10 are threaded together, such as... Figure 9 As shown, the connecting seat 30 is provided with a threaded hole 308, and the outer surface of the rotating shaft 10 is provided with an external thread. The connection between the two is achieved by screwing the rotating shaft 10 into the threaded hole 308 of the connecting seat 30.

[0063] As another feasible embodiment, the connecting seat 30 is snapped into the rotating shaft 10. For example... Figure 10 The connecting seat 30 is provided with an elastic arm 3060 extending toward the side where the rotating shaft 10 is located, and a hook 3061 protruding toward the rotating shaft 10 at the end of the elastic arm 3060. The end 10a of the rotating shaft 10 is provided with a concave groove 103. The connecting seat 30 and the rotating shaft 10 are connected by hooking the hook 3061 with the groove 103. Optionally, the connecting seat 30 is provided with a receiving hole 3062 adapted to the end 10a of the rotating shaft 10. The cross-sectional shape of the receiving hole 3062 is non-circular, such as rectangular or hexagonal, so that the rotating shaft 10 can reliably drive the connecting seat 30 to rotate. Optionally, the hook 3061 has a first inclined surface 3063 on the side facing the working head 20, so that there is a certain resistance between the hook 3061 and the rotating shaft 10 to prevent the connecting seat 30 from retracting, ensuring the reliability of the operation. At the same time, when the connecting seat 30 is pulled out, the resistance can be overcome to drive the elastic arm 3060 to deform, thereby removing the working head module. Optionally, the hook 3061 has a second inclined surface 3064 on the side facing away from the working head 20, so as to facilitate the installation of the connecting seat 30 onto the rotating shaft 10.

[0064] It is understood that the above-described detachable connection structure between the connector 30 and the rotating shaft 10 is merely an example, and those skilled in the art may use other detachable connection structures.

[0065] In some embodiments, such as Figures 2a to 7As shown, the first working head module 2a and the second working head module 2b also include a connector 31 for connecting to the working head 20. The connector 31 of the first working head module 2a is fixed relative to the connecting seat 30. When the first working head module 2a is connected to the rotating shaft 10, the working head 20 of the first working head module 2a rotates synchronously with the rotating shaft 10. The connector 31 of the second working head module 2b is rotatably connected to the connecting seat 30. When the second working head module 2a is connected to the rotating shaft 10, as the rotating shaft 10 rotates, the working head 20 of the second working head module 2b rotates as a whole around the axis 100 of the rotating shaft 10, and can also rotate around its own axis 200. During the polishing process, when the working head 20 encounters resistance, it can rotate around its own axis 200 to avoid jamming or excessive resistance, thereby reducing the risk of damage to the working head 20 and the drive device 1.

[0066] In some embodiments, the working head 20 is detachably connected to the connector 31. The detachable connection methods include, but are not limited to, threaded connection, bolt connection, snap-fit ​​connection (clamping), etc. Figure 2b , Figure 3b , Figures 4 to 7 In the illustrated embodiment, the working head 20 is provided with a connecting shaft 201, and the connecting member 31 is provided with a threaded hole 312. The connecting shaft 201 is connected to the threaded hole 312, thereby achieving a detachable connection between the working head 20 and the connecting member 31. The axis of the connecting shaft 201 is aligned with the axis of the working head 20. In some embodiments, such as Figures 4 to 7 as well as Figure 12 As shown, the connector 31 includes a protruding flange 314, and the working head 20 is detachably connected to the connector 31 by connecting to the flange 314. Specifically, the flange 314 has a threaded hole 315. The working head 20 is connected to the flange 314 by bolts or other fasteners (not shown in the figure) passing through the threaded hole 315. When the bolts or other fasteners are removed, the working head 20 can be removed. For example, a countersunk hole 202 can be provided on the working head 20 to accommodate the head of the bolt and prevent it from protruding. Optionally, the connector 31 is provided with both the flange 314 and the threaded hole 312, with the threaded hole 312 located at the center of the flange 314. In this way, the connector 31 can be adapted to both the working head 20 with a connecting shaft 201 and the working head 20 with a countersunk hole 202, thus improving its versatility. Optionally, the connector 31 is also provided with a limiting groove 316, which is concentrically arranged with the threaded hole 312, and the threaded hole 312 is located on the bottom surface of the limiting groove 316. The working head 20 is provided with a limiting boss 203 that is adapted to the limiting groove 316. By using the limiting boss 203 to cooperate with the limiting groove 316 for limiting, the radial shear force on the bolt in the threaded hole 312 can be reduced, thereby improving the reliability of the operation.

[0067] Since the working head 20 is detachably connected to the connector 31, when the working head 20 is damaged or needs to be replaced, the working head 20 can be removed and replaced with another working head 20, which is more convenient.

[0068] Figure 2a and Figure 3a In the illustrated embodiment, one end (upper end) of the working head 20 has a connecting shaft 201, which is connected to the connector 31. The other end (lower end) of the working head 20 has a countersunk hole 202, which is connected to the flange 314 by fasteners such as bolts. That is, the structures of the working heads 20 at both ends of the polishing machine are different. It is understood that in other embodiments, the working heads 20 at both ends may have the same structure.

[0069] In some embodiments, the connector 31 of the first working head module 2a is detachably connected to the connector 30. The detachable connection method includes, but is not limited to, threaded connection, bolt connection, snap-fit ​​connection, etc.

[0070] Figure 4 and Figure 5 In the illustrated embodiment, the connecting seat 30 and the connecting member 31 are threadedly connected. Specifically, the connecting seat 30 includes a threaded hole 302, and the connecting member 31 is provided with an external thread that is adapted to the threaded hole 302.

[0071] In some embodiments, the connecting seat 30 further includes a limiting hole 303 communicating with the threaded hole 302. The limiting hole 303 is closer to the rotating shaft 10 than the threaded hole 302. The connecting member 31 includes a collar 310 connected to the threaded hole 302 and a limiting part 311 adapted to the limiting hole 303. The diameter of the limiting part 311 is smaller than the diameter of the collar 310. The cooperation between the limiting part 311 and the limiting hole 303 can play the role of radial limiting and axial guiding, which is conducive to the smooth screwing in and out of the connecting member 31, and can also enhance the radial structural strength.

[0072] Optionally, the connector 31 abuts against the connecting seat 30 in the axial direction of the rotating shaft 10. The connecting seat 30 axially limits the connector 31, preventing it from moving axially towards the connecting seat 30. During polishing, the working head 20 is subjected to pressure. The abutment between the connector 31 and the connecting seat 30 can reduce or prevent the stress on the threaded portion where the connecting seat 30 and the connector 31 connect, preventing damage to the threaded portion. For example... Figure 5 In the illustrated embodiment, a stepped portion 304 is formed between the threaded hole 302 and the limiting hole 303, and the collar 310 abuts against the stepped portion 304. For example, as... Figure 11 As shown, Figure 11A schematic diagram of the transmission mechanism 3 of the first working head module 2a in some embodiments is shown. A support step 305 is provided in the limiting hole 303. The surface of the connecting member 31 facing the rotating shaft 10 abuts against the support step 305. The support step 305 protrudes from the bottom plate 300 into the limiting hole 303. Optionally, the support step 305 is annular.

[0073] Optionally, when the connector 31 abuts against the connector 30, there is a gap space 34 between the connector 31 and the base plate 300 to accommodate the head of a fastener (e.g., a bolt).

[0074] In some embodiments, reference Figure 5 and Figure 11 The transmission mechanism 3 also includes a retaining ring 32 to prevent the connecting member 31 from detaching from the connecting seat 30. The retaining ring 32 is connected to the connecting seat 30. The projection of the retaining ring 32 along the axial direction of the rotating shaft 10 is at least partially located on the surface of the collar 310 facing the working head 20, so that the connecting member 31 can be abutted by the retaining ring 32 when it moves outward, thereby limiting the connecting member 31 from detaching from the connecting seat and improving reliability.

[0075] By cooperating with the snap ring 32 and the support step 305 or the step portion 304, the connector 31 can be limited in both directions to prevent the threads from loosening, making it more reliable in use.

[0076] Figures 2a to 2c In the illustrated embodiment, when it is necessary to disassemble the first working head module 2a, the working head 20, the retaining ring 32, the connector 31, and the connecting seat 30 can be removed in sequence to disassemble the first working head module 2a. It is understood that, in order to facilitate the disassembly of the retaining ring 32, the flange 314 can be made smaller, or one or both sides of it can be cut into a flat surface to leave space for removing the retaining ring 32.

[0077] In some embodiments, such as Figure 6 and Figure 7 As shown, the second working head module 2b includes a bearing 33 disposed between the connecting seat 30 and the connecting member 31, allowing the connecting member 31 to rotate smoothly relative to the connecting seat 30. Specifically, the bearing 33 is located inside the outer ring body 301, and the connecting member 31 is connected to the inner hole of the bearing 33. The axis 313 of the connecting member 31 is parallel to the axis 100 of the rotating shaft 10, and the axis of the working head 20 is consistent with the axis 313 of the connecting member 31. One end of the bearing 33 abuts against the support step 305, and the other end is limited by a retaining ring 32.

[0078] Figures 3a to 3cIn the illustrated embodiment, when it is necessary to remove the second working head module 2b, the working head 20, the retaining ring 32, the bearing 33, and the connecting seat 30 can be removed in sequence to disassemble the second working head module 2b. Similarly, to facilitate the removal of the retaining ring 32, the flange 314 can be made smaller, or one or both sides can be cut into a flat surface to leave space for removing the retaining ring 32.

[0079] In some embodiments, such as Figure 1 As shown in Figure 3, the polishing machine also includes a housing 4 connected to the drive unit 1, and the housing 4 is connected to the end of the drive unit 1. Specifically, the drive unit 1 includes a housing 11 and an end cap 12 located at the open end of the housing 11, and the housing 4 is connected to the end cap 12 of the drive unit 1. In the illustrated embodiment, both ends of the drive unit 1 are provided with end caps 12 and housing 4. The working head 20 is located at the open end 43 of the housing 4, forming an air gap 42 between it and the housing 4. The first working head module 2a and the second working head module 2b both include an impeller 21, which is connected to the connecting seat 30 and is provided with radially outwardly extending blades 210.

[0080] like Figure 2b , Figure 2c , Figure 3b , Figure 3c and Figure 13 As shown, the polishing machine includes a heat sink 5 housed within the outer casing 4. The heat sink 5 is connected to the end cover 12 and is located between the impeller 21 and the end cover 12, surrounding the outside of the transmission mechanism 3. A gas flow channel 40 is formed between the outer casing 4 and the heat sink 5. The heat sink 5 includes multiple radially extending teeth 50 to improve heat dissipation. The outer casing 4 is provided with an air inlet 41 communicating with the gas flow channel 40. When the rotating shaft 10 rotates, the impeller 21 is driven to rotate, and airflow is drawn in through the air inlet 41, passes through the gas flow channel 40, and is discharged from the air outlet 42, thereby improving the heat dissipation effect. Optionally, the drive device 1 includes a motor. The motor needs timely heat dissipation during operation, and good heat dissipation is beneficial to improving the reliability of motor operation. During the operation of the polishing machine, it is sometimes necessary to spray liquid on the surface of the workpiece. The airflow discharged from the air outlet 42 can also prevent external liquid from entering the inner casing 4 through the air outlet 42 and damaging the internal components, thereby improving the reliability of the polishing machine.

[0081] In some embodiments, the impeller 21 is an axial-flow impeller, which primarily generates axial airflow. The axial airflow generated by the impeller 21 is greater than the radial airflow it generates, so that the airflow can be efficiently discharged from the opening 10, increasing the airflow force blown out from the outlet gap 42. Optionally, the axial airflow generated by the impeller 21 is more than twice the radial airflow force. It is understood that the axial and radial airflow forces can be adjusted by adjusting the shape and installation angle of the blades 210 of the impeller 21.

[0082] Optionally, the outer casing 4 is in the shape of a straight tube, with its inner wall parallel to the axis of the rotating shaft 10, so that the airflow can be smoothly blown out from the air outlet 42, improving the air outlet efficiency. Optionally, the outer casing 4 and the rotating shaft 10 are arranged coaxially.

[0083] Figure 1 In the embodiment shown in Figure 3, the outer casing 4 is disposed at the end of the housing 11 of the drive device 1, mainly for heat dissipation of the end of the drive device 1, and the drive device 1 can also dissipate heat through heat exchange with the outside through its housing 11.

[0084] In some embodiments, the polishing machine is a double-head polishing machine, with working head modules at both ends. The working heads 20 at both ends are in the same positional relationship with the rotating shaft 10, that is, they are both eccentric (the axis 200 of the working head 20 is parallel to the axis of the rotating shaft 10) or both concentric (the axis 200 of the working head 20 is consistent with the axis of the rotating shaft 10). The concentric and eccentric switching is achieved by changing the working head module (the first working head module 2a or the second working head module 2b).

[0085] In some embodiments, the polishing machine is a dual-head polishing machine, with working head modules at both ends. The positional relationship between the working heads 20 at each end and the rotating shaft 10 is not consistent; that is, the axis 200 of one working head 20 is aligned with the axis 100 of the rotating shaft 10, while the axis 200 of the other working head 200 is parallel to the axis 100 of the rotating shaft 10. This allows different ends of the polishing machine to be used for polishing operations as needed, further reducing costs and saving time by eliminating the need to replace the working head modules.

[0086] In some embodiments, the polishing machine is a single-head polishing machine, which has only one working head module, and the concentric and eccentric modes can be switched by changing the working head module.

[0087] It should be noted that, in the absence of conflict, the various embodiments described herein can be combined with each other to obtain more implementation schemes.

[0088] The above are merely specific embodiments of this utility model. Any improvements made based on the concept of this utility model shall be considered within the scope of protection of this utility model.

Claims

1. A polishing machine, characterized in that, include: The drive unit (1) includes a rotating shaft (10). as well as, The first working head module (2a) and the second working head module (2b) are used for replacement. Both the first working head module (2a) and the second working head module (2b) are detachably connected to the rotating shaft (10). Both the first working head module (2a) and the second working head module (2b) include a working head (20). When the first working head module (2a) is connected to the rotating shaft (10), the axis of the working head (20) of the first working head module (2a) is consistent with the axis of the rotating shaft (10); When the second working head module (2b) is connected to the rotating shaft (10), the axis of the working head (20) of the second working head module (2b) is parallel to the axis of the rotating shaft (10).

2. The polishing machine as described in claim 1, characterized in that, Both the first working head module (2a) and the second working head module (2b) include a transmission mechanism (3) connected to the working head (20), and the transmission mechanism (3) includes a connecting seat (30) detachably connected to the rotating shaft (10).

3. The polishing machine as described in claim 2, characterized in that, The connecting seat (30) is connected to the rotating shaft (10) by fasteners; or, The connecting seat (30) is threadedly connected to the rotating shaft (10); or, The connecting seat (30) is engaged with the rotating shaft (10).

4. The polishing machine as described in claim 2, characterized in that, The rotating shaft (10) has a threaded hole on its end face (101) facing the working head (20). The connection between the connecting seat (30) and the rotating shaft (10) is achieved by fasteners passing through the connecting seat (30) and connecting to the threaded hole.

5. The polishing machine as described in claim 2, characterized in that, The first working head module (2a) and the second working head module (2b) also include a connector (31) for connecting to the working head (20); The connector (31) of the first working head module (2a) is fixed relative to the connecting seat (30); The connector (31) of the second working head module (2b) is rotatably connected to the connecting seat (30).

6. The polishing machine as described in claim 5, characterized in that, The connecting seat (30) includes a base plate (300) and an outer ring (301) extending from the outer edge of the base plate (300) toward the side where the working head (20) is located. The second working head module (2b) also includes a bearing (33) disposed in the outer ring (301). The connecting member (31) is connected to the bearing (33).

7. The polishing machine as described in claim 5, characterized in that, The connector (31) of the first working head module (2a) is detachably connected to the connector (30) of the first working head module (2a).

8. The polishing machine as described in claim 7, characterized in that, The connecting seat (30) and the connecting piece (31) are threaded together.

9. The polishing machine as described in claim 8, characterized in that, The connecting seat (30) includes a threaded hole and a limiting hole (303) communicating with the threaded hole. The limiting hole (303) is closer to the rotating shaft (10) than the threaded hole. The connecting member (31) includes a collar (310) connected to the threaded hole and a limiting part (311) adapted to the limiting hole (303). The diameter of the limiting part (311) is smaller than the diameter of the collar (310).

10. The polishing machine as described in claim 9, characterized in that, The connector (31) abuts against the connector (30) in the axial direction of the rotating shaft (10).

11. The polishing machine as described in claim 10, characterized in that, The connecting seat (30) is provided with a stepped portion (304), the limiting hole (303) is located inside the stepped portion (304), and the collar (310) abuts against the stepped portion (304); or, The limiting hole (303) is provided with a support step (305), and the surface of the connector (31) facing the rotating shaft (10) abuts against the support step (305).

12. The polishing machine as described in claim 9, characterized in that, The transmission mechanism (3) further includes a retaining ring (32) connected to the connecting seat (30), the retaining ring (32) being located on the side of the collar (310) facing the working head (20), and the projection of the retaining ring (32) along the axial direction of the rotating shaft (10) being at least partially located on the end face of the collar (310) facing the working head (20).

13. The polishing machine according to any one of claims 1 to 12, characterized in that, It also includes a housing (4) connected to the end of the drive device (1) and a heat sink (5) located inside the housing (4). A gas flow channel (40) is formed between the housing (4) and the heat sink (5). The housing (4) is provided with an air inlet (41) communicating with the gas flow channel (40). The working head (20) is located at the open end of the housing (4) and forms an air outlet gap (42) with the housing (4). The first working head module (2a) and the second working head module (2b) both include an impeller (21).

14. The polishing machine as described in claim 13, characterized in that, The axial wind force generated by the impeller (21) is greater than the radial wind force it generates; The outer shell (4) is in the shape of a straight tube.

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