WO2018233284A1

WO2018233284A1 - Servo motor

Info

Publication number: WO2018233284A1
Application number: PCT/CN2018/073146
Authority: WO
Inventors: 邓传华
Original assignee: 胡佳培
Priority date: 2017-06-19
Filing date: 2018-01-18
Publication date: 2018-12-27
Also published as: CN107181366A

Abstract

Provided is a servo motor, comprising a motor body and a spindle (11), the spindle (11) being provided with a heat dissipation device. The heat dissipation device comprises a heat conduction ring (31) sleeved on the spindle, an outer surface of the heat conduction ring having a plurality of cooling fan blade groups extending outwardly therefrom, and each of the cooling fan blade groups comprising two cooling fins (33) disposed in parallel. The heat dissipation device further comprises a disc-shaped heat dissipation cover (21), wherein a shaft hole is disposed in the heat dissipation cover. The spindle passes through the shaft hole of the heat dissipation cover. A plurality of air inlets (32) are disposed on a rear surface of the heat dissipation cover, and an intake pipe (23) is installed on the air inlet. The rear surface of the heat dissipation cover is fixed to a top surface of the motor via a connecting rod (24). Air cooling effectively dissipates the heat of the spindle and lowers the temperature. The uniquely-designed double-fin structure quickly removes heat, while also reducing the drag coefficient of the spindle, and reducing energy loss.

Description

Servo motor technology field

The present invention relates to a servo motor.

Background technique

[0002] The heat dissipation of the servo motor's spindle is getting more and more attention, because the efficiency of the heat dissipation of the spindle directly affects the running performance of the motor. For example, some of the main shaft heat dissipation products are mainly attached to the main shaft by a cold pipe, and then the cold pipe acts to cool the main shaft, which makes it easy to wear the cold pipe, and it is difficult to ensure the heat dissipation efficiency.

technical problem

Problem solution

Technical solution

[0003] It is an object of the present invention to overcome the above-discussed shortcomings and to provide a servo motor.

[0004] In order to achieve the above object, a specific embodiment of the present invention is as follows: A servo motor includes a motor body and a main shaft, and the main shaft is provided with a heat dissipating device;

[0005] The heat sink includes:

[0006] The heat conducting ring sleeved on the main shaft, the outer surface of the heat conducting ring extends outwardly to have a plurality of sets of cooling fan blades, and each set of cooling fan blades comprises two heat sinks arranged in parallel; further comprising a disk shape a heat dissipation cover, a heat dissipation cover is provided with a shaft hole, the main shaft passes through a shaft hole of the heat dissipation cover, a plurality of air inlets are arranged on the back of the heat dissipation cover, and an air inlet pipe is installed on the air inlet; the back surface of the heat dissipation cover and the top surface of the motor pass through the connecting rod The utility model further comprises a cover plate for sealing the heat dissipation cover, wherein the cover plate is also provided with a shaft hole, the main shaft passes through the shaft hole of the cover plate, and each of the heat dissipation fins is provided with a heat dissipation hole. Both the thermal coil and the heat sink are integrally formed.

[0007] wherein, the heat dissipation fan blade group has a total of four groups, and is equidistantly disposed on the outer surface of the heat conduction ring.

[0008] wherein each of the heat sinks is provided with six heat dissipation holes.

[0009] wherein, in one set of heat dissipating blade combinations, the heat sink on the side close to the motor body is set as the first heat sink, and the other heat sink is set as the second heat sink; the heat dissipation holes on the first heat sink and the second The number of the heat dissipation holes on the heat sink and the position of the heat sink are the same; the heat dissipation holes on the first heat sink are on the first heat sink The diameter of the outer surface is larger than the diameter of the inner surface of the first heat sink; the heat dissipation hole on the second heat sink has a diameter larger than the diameter of the inner surface of the second heat sink.

[0010] wherein, the diameter of the heat dissipation hole on the first heat sink is the same as the diameter of the heat dissipation hole on the second heat sink on the outer surface of the second heat sink; the heat dissipation on the first heat sink The diameter of the hole on the inner surface of the first heat sink is the same as the diameter of the heat dissipation hole on the second heat sink on the inner surface of the second heat sink

[0011] wherein, the first heat dissipation and the heat dissipation hole on the second heat sink have the same size structure, and the inner surface of the heat dissipation hole is a curved surface, and the surface formula is: , which represents, at 1 (Tl, El) point and 2 (T2, Ε2) The curve segment between points, Ε2>Ε1.

[0012] The connecting rod is a screw.

Advantageous effects of the invention

Beneficial effect

[0013] The air-cooling heat-dissipation method can effectively realize the heat dissipation of the main shaft and reduce the temperature of the main shaft. The uniquely designed double-leaf structure can quickly remove the heat from the same shaft, reduce the drag coefficient of the main shaft, and reduce the loss of capacity. Brief description of the drawing

DRAWINGS

1 is a perspective view of the present invention;

Figure 2 is a partial enlarged view of Figure 1;

3 is a perspective view of another perspective of the present invention;

4 is a cross-sectional view of a heat sink blade combination;

Figure 5 is a perspective view with a connecting rod;

[0019] The reference numerals in FIGS. 1 to 5 illustrate:

[0020] 11-spindle; 21-heat shield; 22-cover; 23-intake pipe; 24-connecting rod; 31-heat conducting ring; 32-inlet port; 33-heat sink; 34-heat vent.

Embodiments of the invention

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The scope of implementation is limited to this.

[0022] As shown in FIG. 1 to FIG. 5, a servo motor according to this embodiment includes a motor body and a main shaft 11

The main shaft is provided with a heat dissipating device.

[0023] The heat dissipation device includes:

[0024] comprising a heat-conducting ring 31 sleeved on the main shaft 11, the outer surface of the heat-conducting ring 31 extends outwardly with a plurality of sets of heat-dissipating fan blades, and each set of cooling fan blades comprises two heat-dissipating fins 33 arranged in parallel; The heat dissipation cover 21 includes a shaft hole. The heat dissipation cover 21 is provided with a shaft hole. The main shaft 11 passes through the shaft hole of the heat dissipation cover 21. The rear surface of the heat dissipation cover 21 is provided with a plurality of air inlets 32. The air inlet 32 is mounted on the air inlet 32. The air inlet tube 23; the back surface of the heat dissipation cover 21 and the top surface of the motor are fixed by the connecting rod 24; further includes a cover plate 22 for sealing the heat dissipation cover 21, and the cover plate 22 is also provided with a shaft hole, and the main shaft 11 passes through the cover plate A shaft hole 22, each of the heat sinks 33 is provided with a heat dissipation hole 34. The heat conducting ring 31 and the heat sink 33 are integrally formed, and the heat conducting ring 31 and the heat sink 33 are made of aluminum alloy.

[0025] Specifically, the cold air is continuously blown into the heat-dissipating cover 21 through the intake pipe 23, and when the motor rotates, the rotation of the plurality of sets of heat-dissipating fan blades continuously dissipates heat in the cold air, and the cold air is in the shaft hole of the cover plate 22. The gap with the main shaft 11 is dissipated.

[0026] In the plurality of sets of heat dissipating fan blades of the present invention, each set of heat dissipating fan blades is combined with two fins 33, and the two fins 33 generate a certain amount between the two fins 33 during the blowing of the cold air. The turbulence allows the cold air to contact and stay longer, which is very effective in reducing the energy consumption and increasing the heat dissipation.

[0027] By the air-cooling heat dissipation method, the heat dissipation of the main shaft 11 can be effectively realized, the temperature of the main shaft 11 can be reduced, the uniquely designed double-leaf structure, the same heat can be quickly taken away, the drag coefficient of the main shaft 11 can be reduced, and the capacity loss can be reduced. .

[0028] In the servo motor of the embodiment, the heat dissipation fan blade group has a total of four groups, and is disposed equidistantly around the outer surface of the heat conduction ring 31. In the servo motor of this embodiment, each of the heat sinks 33 is provided with six heat dissipation holes 34. In the servo motor of the embodiment, in the heat dissipation blade combination, the heat sink 33 on the side close to the motor body is the first heat sink 33, and the other heat sink 33 is the second heat sink 33. The number of the heat dissipation holes 34 on the first heat sink 33 and the number of the heat dissipation holes 34 on the second heat sink 33 are the same; the heat dissipation holes 34 on the first heat sink 33 are outside the first heat sink 33 The diameter of the surface is larger than the diameter of the inner surface of the first heat sink 33; the heat dissipation hole 34 of the second heat sink 33 has a larger diameter on the outer surface of the second heat sink 33 than the inner surface of the second heat sink 33 diameter of. As described in this embodiment A servo motor, the diameter of the heat dissipation hole 34 of the first heat sink 33 on the outer surface of the first heat sink 33 is the same as the diameter of the heat dissipation hole 34 of the second heat sink 33 on the outer surface of the second heat sink 33; The diameter of the heat dissipation hole 34 of the first heat sink 33 on the inner surface of the first heat sink 33 is the same as the diameter of the heat dissipation hole 34 of the second heat sink 33 on the inner surface of the second heat sink 33. In the servo motor of the embodiment, the first heat dissipation and the heat dissipation hole 34 on the second heat sink 33 have the same size structure, and the inner surface of the heat dissipation hole 34 is a curved surface, and the surface formula is:

, which represents the curve segment between the 1 (Tl, El) point and the 2 (T2, Ε 2) point, Ε2>Ε1.

[0029] Specifically, a certain turbulence is generated between the two heat sinks 33 to ensure the utilization of the cold air, but there is also a certain wind resistance to loss the rotation speed and torque of the servo motor. Therefore, the present invention constrains the above-described curved surface curvature and the shape of the heat dissipation holes 34. It has been found that when cold air is blown in from the heat dissipation holes 34 on the outer surface of the first heat sink 33, the temperature of the cold air is further lowered due to the compression of the air, that is, in the middle of the two heat sinks 33. The temperature of the airflow is lower, and the enthalpy is removed from the hole on the inner surface of the second heat sink 33, the pressure is lowered, and a certain amount of heat is released, but since it has reached the outside of the second heat sink 33, it is immediately from the cover 22 The shaft holes are eliminated, so that the released heat does not affect the heat dissipation. Instead, the two opposite heat dissipation holes 34 greatly increase the degree of heat dissipation between the two fins 33. In addition, in order to reduce the influence of the wind resistance of the turbulence on the rotational speed and torque, the above surface formula is designed. The surface under the formula structure can prove the smooth surface airflow in the practice and can greatly reduce the wind resistance.

The above description is only a preferred embodiment of the present invention, and equivalent changes or modifications made to the structures, features, and principles described in the scope of the present invention are included in the protection of the present patent application. Within the scope

Claims

Claim

[Claim 1] A servo motor, comprising: a motor body and a main shaft (11), wherein the main shaft is provided with a heat dissipating device; the heat dissipating device comprises: heat conducting sleeved on the main shaft (11) Circle (31), the outer surface of the heat conducting ring (31) extends outwardly with a plurality of sets of cooling fan blades, and each set of cooling fan blades includes two heat sinks (33) arranged in parallel; and further includes a disk-shaped heat sink a cover (21), a heat dissipation cover (21) is provided with a shaft hole, a spindle (11) passes through a shaft hole of the heat dissipation cover (21), and a plurality of air inlets (32) are provided on the back surface of the heat dissipation cover (21). An air inlet pipe (23) is mounted on the port (32); the rear surface of the heat sink cover (21) and the top surface of the motor are fixed by a connecting rod (24); and a cover plate for sealing the heat shield (21) is also included (22) The cover plate (22) is also provided with a shaft hole, the main shaft (11) passes through the shaft hole of the cover plate (22), and each of the heat sinks (33) is provided with a heat dissipation hole (34); In the blade combination, the heat sink (33) near the side of the motor body is set as the first heat sink (3) 3), the other heat sink (33) is set as the second heat sink (33); the heat dissipation holes (34) on the first heat sink (33) and the heat dissipation holes (34) on the second heat sink (33) The number and the set position are the same; the heat dissipation hole (34) on the first heat sink (33) has a larger diameter on the outer surface of the first heat sink (33) than in the first heat sink (33) a diameter of the surface; a heat dissipation hole (34) on the second heat sink (33) whose diameter on the outer surface of the second heat sink (33) is larger than a diameter of the inner surface of the second heat sink (33) The heat dissipation hole (34) on the first heat sink (33) has a diameter on the outer surface of the first heat sink (33) and a heat dissipation hole (34) on the second heat sink (33) outside the second heat sink (33) The diameter of the surface is the same; the diameter of the heat dissipation hole (34) on the first heat sink (33) on the inner surface of the first heat sink (33) and the heat dissipation hole (34) on the second heat sink (33) The inner surface of the two heat sinks (33) has the same diameter.

[Claim 2] A servo motor according to claim 1, wherein: the heat dissipation blade group has a total of four groups, and is equidistantly disposed on an outer surface of the heat conduction ring (31).

[Claim 3] A servo motor according to claim 1, wherein: each heat sink (33)

There are six cooling holes (34) on it.

[Claim 4] A servo motor according to claim 1, wherein: the first heat dissipation and heat sink (33)

The inner surface is a curved surface whose surface formula is:

[Claim 5] A servo motor according to claim 1, characterized in that the connecting rod (24) is a screw.

[Claim 6] A servo motor according to claim 1, characterized in that the heat conducting ring (31) and the heat sink (33) are integrally formed.