Drive mechanism and cutting machine

Abstract

The present invention discloses a driving mechanism and a cutting machine. The driving mechanism includes a motor group, a driver, and an encoder. The motor group includes at least two motors that are connected in parallel and arranged oppositely. Each motor includes a base, a winding, and a magnet. The magnet is sleeved on the winding and rotatably connected to the base, and the winding and the magnet are coaxially arranged. The magnet includes a plurality of magnetic units, and the plurality of magnetic units are arranged at intervals along the circumferential direction of the winding. Each magnetic unit is provided with two magnetic poles with opposite polarities. In the same magnet, the magnetic poles of two adjacent magnetic units are arranged oppositely, and in the two motors, the magnetic poles of two opposite magnetic units are arranged with the same polarity. The driver is electrically connected to one of the motors, and the encoder is arranged on one of the motors and on the base, and the encoder is communicatively connected to the driver. The technical solution of the present invention reduces the production cost of the current driving mechanism.

Description

Technical Field

[0001] The present invention relates to the field of driving technologies, and particularly to a driving mechanism and a cutting machine applying the driving mechanism. Background Art

[0002] In the current design of driving mechanisms, most of them are such that one driver can only drive one motor to work, and it is impossible to use only one driver to achieve synchronous driving of two motors. That is, for synchronous dual-driving of two motors, one driver is required for each motor to achieve synchronous dual-driving, which increases the production cost.

[0003] The above content is only used to assist in understanding the technical solution of the present application, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main object of the present invention is to propose a driving mechanism, aiming to reduce the production cost of the current driving mechanism.

[0005] To achieve the above object, a driving mechanism proposed by the present invention includes:

[0006] A motor group, the motor group includes at least two motors connected in parallel and arranged oppositely. Each motor includes a base, a winding, and a magnet. The winding is arranged on the base, the magnet is sleeved on the winding, and is rotatably arranged on the base, and the winding and the magnet are coaxially arranged.

[0007] The magnet includes a plurality of magnetic units. The plurality of magnetic units are arranged at intervals along the circumferential direction of the winding. Each magnetic unit is provided with two magnetic poles with opposite magnetic polarities. In the same magnet, the magnetic poles of two adjacent magnetic units are arranged oppositely, and in the two motors, the magnetic poles of two opposite magnetic units are arranged with the same magnetic polarities.

[0008] A driver, the driver is electrically connected to one of the motors; and

[0009] An encoder, the encoder is arranged on one of the motors and on the base, and the encoder is electrically connected to the driver.

[0010] In an embodiment of the present invention, in two adjacent motors, the two windings are arranged symmetrically with respect to a mirror image.

[0011] In an embodiment of the present invention, each motor further includes an outer rotor, the outer rotor is sleeved on the magnet, and the outer rotor rotates with the magnet.

[0012] In one embodiment of the present invention, each of the motors further comprises a bearing and a rotating shaft, wherein the bearing is arranged on the base, the winding is arranged around the bearing and is spaced apart from the bearing, one end of the rotating shaft is passed through the bearing and is rotatably arranged on the bearing, and the other end of the rotating shaft is transmission-connected to the outer rotor.

[0013] In one embodiment of the present invention, each of the motors further comprises a brake assembly, wherein the brake assembly is disposed on a side of the base away from the winding, and one end of the rotating shaft passing through the bearing is transmission-connected to the brake assembly.

[0014] In one embodiment of the present invention, the base includes a pedestal and an annular rim arranged on one side of the pedestal, the surface of the pedestal provided with the annular rim and the annular rim form a first installation space, and the side of the pedestal facing away from the annular rim forms a second installation space, the winding, the magnet, the outer rotor, the bearing and the rotating shaft are all arranged in the first installation space, and the brake assembly is arranged in the second installation space.

[0015] In one embodiment of the present invention, the inner wall surface of the annular rim located in the first installation space is provided with a first boss, the bearing is fixedly connected to the first boss, and the shaft is rotatably connected to the side of the bearing away from the annular rim.

[0016] In one embodiment of the present invention, a second boss is protruding from the surface of the base located outside the annular rim, the winding is fixedly connected to the second boss, the magnet is sleeved on the side of the winding away from the annular rim, and the outer rotor is arranged on the side of the magnet away from the winding.

[0017] In one embodiment of the present invention, a plurality of first bosses are provided, and the plurality of first bosses are arranged at intervals along the circumferential direction of the annular peripheral edge;

[0018] And / or, a plurality of second bosses are provided, and the plurality of second bosses are arranged at intervals along the circumferential direction of the annular peripheral edge.

[0019] The present invention further provides a cutting machine, comprising a driving mechanism, the driving mechanism comprising:

[0020] A motor group, the motor group includes at least two motors connected in parallel and arranged opposite to each other, each of the motors includes a base, a winding and a magnet, the winding is arranged on the base, the magnet is sleeved on the winding and rotatably arranged on the base, and the winding and the magnet are coaxially arranged,

[0021] The magnet includes a plurality of magnetic units, and the plurality of magnetic units are arranged at intervals along the circumferential direction of the winding. Each magnetic unit is provided with two magnetic poles with opposite polarities. In the same magnet, the magnetic poles of two adjacent magnetic units are arranged in opposite directions, and in the two motors, the magnetic poles of two opposite magnetic units are arranged in the same direction;

[0022] A driver, the driver is electrically connected to one of the motors; and

[0023] An encoder, the encoder is arranged on one of the motors and on the base, and the encoder is electrically connected to the driver.

[0024] The technical solution of the present invention provides a driving mechanism. The motor group in the driving mechanism includes at least two motors connected in parallel and arranged opposite to each other. Among them, each motor includes a base, a winding, and a magnet. The winding is arranged on the base, the magnet is sleeved on the winding, and is rotatably arranged on the base. The winding and the magnet in each motor are coaxially arranged, and the magnet includes a plurality of magnetic units. The plurality of magnetic units are arranged at intervals along the circumferential direction of the winding. Each magnetic unit is provided with two magnetic poles with opposite polarities. In the same magnet, the magnetic poles of two adjacent magnetic units are arranged in opposite directions. In the two motors, the magnetic poles of two opposite magnetic units are arranged in the same direction. By arranging the same magnetic poles for two opposite magnetic units in the two motors, the parameters such as the rotational speed and rotation time in the two motors can be ensured to be consistent. Therefore, one driver can be used to drive at least two motors to work synchronously through one encoder, avoiding the use of one driver for each motor to achieve synchronous dual drive, effectively reducing the use of drivers and encoders. That is, the technical solution of the present invention reduces the production cost of the current driving mechanism. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic structural diagram of an embodiment of the driving mechanism of the present invention;

[0027] Figure 2 It is a top view of an embodiment of the driving mechanism of the present invention;

[0028] Figure 3 It is Figure 2 The sectional view taken along line A-A in

[0029] Figure 4Partial sectional view of an embodiment of the drive mechanism of the present invention;

[0030] Figure 5 Enlarged view at A' in convex 4;

[0031] Figure 6 Schematic structural diagram of the winding in one of the motors in the drive mechanism of the present invention;

[0032] Figure 7 Schematic structural diagram of the magnet and the outer rotor in one of the motors in the drive mechanism of the present invention;

[0033] Explanation of the reference numerals in the drawings:

[0034] Label Name Label Name 100 Drive mechanism 113 Magnet 10 Motor set 114 Outer rotor 11 Motor 115 Bearing 111 Base 116 Rotating shaft 1111 Base 117 Brake assembly 1111a Second boss 12 Third motor 1112 Annular edge 13 Mounting seat 1112a First boss 14 Housing 112 Winding 20 Encoder

[0035] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0039] The present invention provides a drive mechanism 100, aiming to reduce the production cost of the current drive mechanism 100.

[0040] With reference to Figures 1 to 7, in an embodiment of the driving mechanism 100 of the present invention, the driving mechanism 100 includes:

[0041] A motor group 10, the motor group 10 includes at least two motors 11 connected in parallel and arranged oppositely. Each motor 11 includes a base 111, a winding 112 and a magnet 113. The winding 112 is arranged on the base 111. The magnet 113 is sleeved on the winding 112 and is rotatably arranged on the base 111, and the winding 112 and the magnet 113 are coaxially arranged.

[0042] The magnet 113 includes a plurality of magnetic units. The plurality of magnetic units are arranged at intervals along the circumference of the winding 112. Each magnetic unit is provided with two magnetic poles with opposite polarities. In the same magnet 113, the magnetic poles of two adjacent magnetic units are arranged oppositely. And in the two motors 11, the magnetic poles of two opposite magnetic units are arranged with the same polarity.

[0043] A driver (not shown in the figure), the driver is electrically connected to one of the motors 11; and

[0044] An encoder 20, the encoder 20 is arranged on one of the motors 11 and on the base 111, and the encoder 20 is electrically connected to the driver.

[0045] In this embodiment, the motor group 10 further includes a mounting seat 13 and a housing 14. The housing 14 covers the mounting seat 13 and forms a mounting cavity. The motor group 10 is arranged in the mounting cavity. The motor group 10 further includes a third motor 12. The third motor 12 is arranged in the mounting cavity and between two adjacent motors 11, and the rotation direction of the third motor 12 is arranged at an angle with the rotation direction of the motor 11. By using the third motor 12, the installation space of the motor group 10 can be effectively utilized to reduce the production cost.

[0046] Specifically, the windings 112 in at least two motors 11 are arranged oppositely. And in the same magnet, the magnetic poles of two adjacent magnetic units are arranged oppositely. In the two motors, the magnetic poles of two opposite magnetic units are arranged with the same polarity. Specifically, there are various arrangement methods. For example, the windings 112 and the magnets 113 in two adjacent motors 11 are arranged face to face, or back to back, or at least two motors 11 are arranged side by side at intervals.

[0047] The winding 112 includes a plurality of coils and a circuit board. One ends of the plurality of coils are fixedly connected to the base 111, and the other sides of the plurality of coils are fixedly connected to the circuit board and are all electrically connected to the circuit board. The connection mode of the plurality of coils is controlled by the circuit board, specifically including clockwise installation or counterclockwise installation.

[0048] The two magnetic poles of the magnet 113 are S-pole and N-pole respectively, and the S-pole and the N-pole are arranged alternately. In the two motors, the S-pole of one magnetic unit is arranged opposite to the S-pole of the other magnetic unit.

[0049] The driver (not shown) is disposed outside the housing and is electrically connected to one of the motors 11 in the motor group 10 and the encoder 20 .

[0050] The encoder 20 can be used as a feedback unit of the motor 11 to feed back data such as the specific position and speed of rotation of the motor 11 to the driver. The driver drives the movement of the motor 11 through calculation based on the received data such as the position and speed of rotation of the motor 11. Since the windings 112 and the magnetic poles of the magnets 113 of at least two motors 11 in the motor group 10 are relatively arranged, the specific position and speed of rotation of at least two motors 11 are consistent. Therefore, when an encoder 20 is set in one of the motors 11, the specific position and speed of rotation of other motors 11 can be obtained by obtaining the specific position and speed of rotation of the motor 11. In this way, multiple motors 11 can share the same encoder 20, and one driver can use one encoder 20 to drive multiple motors 11 to work at the same time.

[0051] Therefore, it can be understood that in the technical solution of the present invention, the motor group 10 in the driving mechanism 100 includes at least two motors 11 connected in parallel and arranged opposite to each other, wherein each motor 11 includes a base 111, a winding 112 and a magnet 113, the winding 112 is arranged on the base 111, the magnet 113 is sleeved on the winding 112, and is rotatably arranged on the base 111, the winding 112 in each motor 11 is coaxially arranged with the magnet 113, and the magnet 113 includes a plurality of magnetic units, and the plurality of magnetic units are arranged at intervals along the circumference of the winding 112, each Each magnetic unit is provided with two magnetic poles with opposite magnetic properties. In the same magnet 113, the magnetic poles of the two adjacent magnetic units are arranged oppositely. In the two motors 11, the magnetic poles of the two opposite magnetic units are arranged identically. By arranging the same magnetic poles in the two opposite magnetic units in the two motors, the rotation speed, rotation time and other parameters in the two motors can be kept consistent. Therefore, a driver is used to drive at least two motors 11 to work synchronously through an encoder 20, avoiding that each motor 11 corresponds to a driver to realize synchronous dual drive, and effectively reducing the use of the driver and the encoder 20. That is, the technical solution of the present invention reduces the production cost of the current drive mechanism 100.

[0052] Combined with reference Figures 1 to 3 , Figure 6 and Figure 7 In one embodiment of the driving mechanism 100 of the present invention, in two adjacent motors 11, the two windings 112 are arranged in mirror symmetry.

[0053] In this embodiment, the winding 112 has a split structure, and two adjacent windings 112 are mirror-symmetrical. That is, among two adjacent windings 112, for one winding 112, the connection mode of several coils to the circuit board is clockwise connection, and for the other winding 112, the connection mode of several coils to the circuit board is counterclockwise connection. When the two windings 112 of two adjacent motors 11 are arranged in a mirror-symmetrical manner, the two adjacent motors 11 can rotate in the same direction.

[0054] It can be understood that for the convenience of installing the internal structure of the motor 11, therefore, multiple identical motors 11 can be installed in a mirror-symmetrical manner, without setting motors 11 with multiple different structures, which can further reduce the production cost.

[0055] Referring to Figures 1 to 7 , in an embodiment of the driving mechanism 100 of the present invention, each of the motors 11 further includes an outer rotor 114, and the outer rotor 114 is sleeved on the magnet 113, and the outer rotor 114 rotates with the magnet 113.

[0056] In this embodiment, the outer peripheral contour of the winding 112 is circularly arranged. Each motor 11 generates magnetic force through the coils in the winding 112, and uses the magnetic force to drive the outer rotor 114 to rotate, thereby realizing the driving of the motor 11.

[0057] Referring to Figures 1 to 5 , in an embodiment of the driving mechanism 100 of the present invention, each of the motors 11 further includes a bearing 115 and a rotating shaft 116. The bearing 115 is arranged on the base 111, the winding 112 is disposed around the bearing 115 and is spaced apart from the bearing 115. One end of the rotating shaft 116 passes through the bearing 115 and is rotatably arranged in the bearing 115, and the other end of the rotating shaft 116 is drivingly connected to the outer rotor 114.

[0058] In this embodiment, the bearing 115 includes a fixed part and a rotating part. The rotating part passes through the fixed part and is rotatably connected to the fixed part. The fixed part is fixedly connected to the base 111, and the rotating part is fixedly connected to the rotating shaft 116, so that the outer rotor 114 is rotatably connected to the base 111 through the cooperation of the rotating shaft 116 and the bearing 115.

[0059] It can be understood that in order to ensure the rotational stability of the outer rotor 114 and prevent the outer rotor 114 from shifting during rotation, the bearing 115 is fixedly connected to the base 111. One end of the rotating shaft 116 passes through the bearing 115 and is rotatably connected to the bearing 115, and the other end of the rotating shaft 116 is drivingly connected to the outer rotor 114, so that the outer rotor 114 is rotatably connected to the base 111 through the cooperation of the rotating shaft 116 and the bearing 115.

[0060] Referring to Figures 3 to 5In one embodiment of the driving mechanism 100 of the present invention, each of the motors 11 further includes a brake assembly 117, and the brake assembly 117 is disposed on a side of the base 111 away from the winding 112, and one end of the rotating shaft 116 that passes through the bearing 115 is transmission-connected to the brake assembly 117.

[0061] It is understandable that in order to better control the rotation speed of the motor 11 to ensure accurate operation of the motor 11 , the brake assembly 117 is transmission-connected to the rotating shaft 116 , and the rotation speed of the outer rotor 114 is controlled by the cooperation of the brake assembly 117 and the rotating shaft 116 .

[0062] Combined with reference Figures 3 to 5 In one embodiment of the driving mechanism 100 of the present invention, the base 111 includes a base 1111 and an annular rim 1112 arranged on one side of the base 1111, the surface of the base 1111 provided with the annular rim 1112 and the annular rim 1112 form a first installation space, and the side of the base 1111 facing away from the annular rim 1112 and the annular rim 1112 form a second installation space, the winding 112, the magnet 113, the outer rotor 114, the bearing 115 and the rotating shaft 116 are all arranged in the first installation space, and the brake assembly 117 is arranged in the second installation space.

[0063] It can be understood that in order to improve the installation stability of structures such as the winding 112, the magnet 113, the outer rotor 114, the bearing 115, the rotating shaft 116, etc., the winding 112, the magnet 113, the outer rotor 114, the bearing 115 and the rotating shaft 116 are installed in a first installation space formed by the annular edge 1112 and the surface of the base 1111 provided with the annular edge 1112; and in order to improve the installation stability of the brake assembly 117 and ensure the compactness of the structure so that the structure is thinner, the brake assembly 117 is installed in a second installation space formed on the side of the base 1111 away from the annular edge 1112.

[0064] Combined with reference Figures 3 to 5 In one embodiment of the driving mechanism 100 of the present invention, the annular rim 1112 is located on the inner wall surface of the first installation space and is convexly provided with a first boss 1112a, the bearing 115 is fixedly connected to the first boss 1112a, and the rotating shaft 116 is rotatably connected to the side of the bearing 115 that is away from the annular rim 1112.

[0065] In this embodiment, a first connection hole is formed on the surface of the fixing portion of the bearing 115 facing the first boss 1112a, and a second connection hole is formed on the surface of the first boss 1112a facing the bearing 115. The fixing portion of the bearing 115 is fixedly connected to the first boss 1112a through the cooperation of screws or other connecting members with the first connection hole and the second connection hole.

[0066] Similarly, a third connection hole is formed on the surface of the rotating portion of the bearing 115 facing the rotating shaft 116, and a fourth connection hole is formed on the surface of the rotating shaft 116 facing the bearing 115. The rotating portion of the bearing 115 is fixedly connected to the rotating shaft 116 through the cooperation of screws or other connecting members with the third connection hole and the fourth connection hole.

[0067] It can be understood that, in order to further improve the stability of the bearing 115 and the rotating shaft 116 installed in the first installation space and improve the installation convenience of the bearing 115 and the rotating shaft 116, the fixing portion of the bearing 115 is fixedly connected to the first boss 1112a, and the rotating portion of the bearing 115 is fixedly connected to the rotating shaft 116.

[0068] Referring to Figures 3 to 5 , in an embodiment of the driving mechanism 100 of the present invention, a second boss 1111a protrudes from the surface of the base 1111 located outside the annular edge 1112. The winding 112 is fixedly connected to the second boss 1111a. The magnet 113 is sleeved on the side of the winding 112 facing away from the annular edge 1112, and the outer rotor 114 is arranged on the side of the magnet 113 facing away from the winding 112.

[0069] It can be understood that, in order to further improve the stability of the winding 112 installed in the first installation space and improve the installation convenience of the winding 112, the winding 112 is fixedly connected to the second boss 1111a.

[0070] Referring to Figures 3 to 5 , in an embodiment of the driving mechanism 100 of the present invention, there are a plurality of the first bosses 1112a, and the plurality of the first bosses 1112a are arranged at intervals along the circumferential direction of the annular edge 1112.

[0071] It can be understood that, in order to further improve the connection stability between the bearing 115 and the rotating shaft 116 and the base 111, and further improve the installation stability of the outer rotor 114, a plurality of first bosses 1112a are arranged at intervals along the circumferential direction of the annular edge 1112 to increase the contact area between the first bosses 1112a and the fixing portion of the bearing 115.

[0072] Referring to Figures 3 to 5, in an embodiment of the driving mechanism 100 of the present invention, a plurality of the second bosses 1111a are provided, and the plurality of the second bosses 1111a are arranged at intervals along the circumferential direction of the annular border 1112.

[0073] It can be understood that, similarly, in order to further improve the connection stability between the winding 112 and the base 111, a plurality of second bosses 1111a are arranged at intervals along the circumferential direction of the annular border 1112 to increase the contact area between the second bosses 1111a and the winding 112.

[0074] Certainly, in other embodiments of the present invention, the first boss 1112a and the second boss 1111a may also be arranged to extend along the circumferential direction of the annular border 1112, and this arrangement can also improve the connection stability between the first boss 1112a and the fixing part of the bearing 115, and can improve the connection stability between the second boss 1111a and the winding 112.

[0075] The present invention also provides a cutting machine, which includes a driving mechanism 100. The specific structure of the driving mechanism 100 refers to the above embodiments. Since this cutting machine adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0076] This cutting machine can be used in fields such as tool processing and laser processing.

[0077] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A driving mechanism, characterized in that, include: A motor group, the motor group includes at least two motors connected in parallel and arranged opposite to each other, each of the motors includes a base, a winding and a magnet, the winding is arranged on the base, the magnet is sleeved on the winding and rotatably arranged on the base, and the winding and the magnet are coaxially arranged, The magnet comprises a plurality of magnetic units, the plurality of magnetic units are arranged at intervals along the circumferential direction of the winding, each of the magnetic units is provided with two magnetic poles with opposite magnetic properties, the magnetic poles of two adjacent magnetic units in the same magnet are arranged oppositely, and the magnetic poles of two opposite magnetic units in the two motors are arranged identically; a driver electrically connected to one of the motors; and An encoder, the encoder is disposed on one of the motors and on the base, and the encoder is electrically connected to the driver; In two adjacent motors, the two windings are arranged in mirror symmetry, wherein a plurality of coils in the winding of one motor are connected to the circuit board in a clockwise manner, and a plurality of coils in the winding of the other motor are connected to the circuit board in a counterclockwise manner; The motor group further includes a third motor, which is arranged between two adjacent motors, and a rotation direction of the third motor forms an angle with a rotation direction of the motors.

2. The drive mechanism according to claim 1, wherein Each of the motors further includes an outer rotor, which is sleeved on the magnet and rotates with the magnet.

3. The drive mechanism according to claim 2, characterized in that, Each of the motors also includes a bearing and a rotating shaft. The bearing is arranged on the base, the winding is arranged around the bearing and is spaced apart from the bearing, one end of the rotating shaft is passed through the bearing and is rotatably arranged on the bearing, and the other end of the rotating shaft is transmission-connected to the outer rotor.

4. The drive mechanism according to claim 3, wherein Each of the motors further comprises a brake assembly, which is arranged on a side of the base away from the winding, and one end of the rotating shaft passing through the bearing is transmission-connected to the brake assembly.

5. The drive mechanism according to claim 4, characterized in that The base includes a pedestal and an annular rim arranged on one side of the pedestal, the surface of the pedestal provided with the annular rim and the annular rim form a first installation space, and the side of the pedestal away from the annular rim forms a second installation space, the winding, the magnet, the outer rotor, the bearing and the rotating shaft are all arranged in the first installation space, and the brake assembly is arranged in the second installation space.

6. The drive mechanism according to claim 5, characterized in that, The inner wall surface of the annular rim located in the first installation space is convexly provided with a first boss, the bearing is fixedly connected to the first boss, and the rotating shaft is rotatably connected to the side of the bearing away from the annular rim.

7. The drive mechanism according to claim 6, characterized in that, The surface of the base located outside the annular rim is protruding with a second boss, the winding is fixedly connected to the second boss, the magnet is sleeved on the side of the winding away from the annular rim, and the outer rotor is arranged on the side of the magnet away from the winding.

8. The drive mechanism according to claim 7, characterized in that, There are a plurality of first bosses, and the first bosses are arranged at intervals along the circumferential direction of the annular peripheral edge; And / or, a plurality of second bosses are provided, and the plurality of second bosses are arranged at intervals along the circumferential direction of the annular peripheral edge.

9. A cutting machine, characterized in that, The invention comprises a driving mechanism as claimed in any one of claims 1 to 8.

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