WO2018233208A1

WO2018233208A1 - Heat dissipation device for servo motor spindle

Info

Publication number: WO2018233208A1
Application number: PCT/CN2017/113101
Authority: WO
Inventors: 邓传华
Original assignee: 邝嘉豪
Priority date: 2017-06-19
Filing date: 2017-11-27
Publication date: 2018-12-27
Also published as: CN107040093B; CN107040093A

Abstract

Provided is a heat dissipation device for a servo motor spindle, comprising a heat conduction ring (31) sleeved on a spindle (11), 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 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, and a plurality of air inlets (32) are disposed on a back surface of the heat dissipation cover. An intake pipe (23) is installed on the air inlet, and 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 spindle temperature. The uniquely-designed double-fin structure quickly removes heat, while also reducing the drag coefficient of the spindle and reducing energy loss.

Description

Instruction manual Name: Servo motor spindle heat sink Technical field

[0001] The present invention relates to a servo motor spindle heat sink.

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] An object of the present invention is to overcome the above disadvantages and to provide a heat sink for a servo motor spindle.

[0004] In order to achieve the above object, the specific solution of the present invention is as follows: A heat dissipation device for a servo motor spindle includes a heat conduction ring sleeved on a main shaft, and an outer surface of the heat conduction ring extends outward to have a plurality of sets of heat dissipation fan blades, each of which The heat dissipating fan blade combination includes two heat sinks arranged in parallel; further comprising a disc-shaped heat dissipating cover, the heat dissipating cover is provided with a shaft hole, the main shaft passes through the shaft hole of the heat dissipating cover, and the rear side of the heat dissipating cover is provided with a plurality of holes The air inlet is provided with an air inlet pipe; the rear surface of the heat dissipation cover and the top surface of the motor are fixed by a connecting rod; and a cover plate for sealing the heat dissipation cover is further included, and the cover plate is also provided with a shaft hole, and the main shaft passes through the cover A shaft hole of the plate, wherein each of the heat sinks is provided with a heat dissipation hole. Both the thermal coil and the heat sink are integrally formed.

[0005] 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.

[0006] wherein each of the heat sinks is provided with six heat dissipation holes.

[0007] wherein, in a group of heat dissipating blade combinations, a heat sink adjacent to one side of the motor body is configured as a first heat sink, and the other heat sink is configured as a second heat sink; a heat dissipation hole on the first heat sink and a second The number of the heat dissipation holes on the heat sink is the same as the position of the heat dissipation holes; the diameter of the heat dissipation holes on the first heat dissipation plate is larger than the diameter of the inner surface of the first heat dissipation plate; The louver on the sheet has a diameter on the outer surface of the second fin that is larger than the diameter of the inner surface of the second fin.

[0008] wherein the heat dissipation hole on the first heat sink is on the diameter of the outer surface of the first heat sink and the second heat sink The louvers have the same diameter on the outer surface of the second heat sink; the diameter of the heat dissipation hole on the first heat sink is the same as the diameter of the inner surface of the first heat sink and the heat dissipation hole on the second heat sink on the inner surface of the second heat sink 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 the curve segment between the 1 (Tl, El) point and the 2 (T2, Ε 2) point, Ε2>Ε1.

[0010] The connecting rod is a screw.

Advantageous effects of the invention

Beneficial effect

[0011] 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 a weathering device mounted on a motor of the present invention;

Figure 2 is a partial enlarged view of Figure 1;

3 is a perspective view of another perspective of the aspect of the present invention mounted on the motor; [0014] FIG.

[0015] FIG. 4 is a cross-sectional view of a heat sink blade combination;

[0016] FIG. 5 is a perspective view of a waiting rod with a connecting rod mounted on a motor;

[0017] The reference numerals in FIGS. 1 to 5 illustrate:

[0018] 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

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, which are not intended to limit the scope of the invention. [0020] As shown in FIG. 1 to FIG. 5, a heat dissipation device for a servo motor spindle according to the embodiment includes a heat conducting ring 31 that is sleeved on the main shaft 11. The outer surface of the heat conducting ring 31 extends outwardly. The heat dissipating fan blade combination includes a heat sink blade 33 arranged in parallel, and a heat dissipating fin 33 disposed in parallel. The heat dissipating cover 21 is further provided with a shaft hole, and the main shaft 11 passes through the heat dissipating cover 21 a shaft hole, a plurality of air inlets 32 are disposed on the back surface of the heat dissipation cover 21, and an air inlet tube 23 is mounted on the air inlet 32; a rear surface of the heat dissipation cover 21 and a top surface of the motor are fixed by a connecting rod 24; and a heat dissipation cover is further included The cover plate 22 is closed, and 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. Each of the heat sinks 33 is provided with a heat dissipation hole 34. Heat conducting ring 31 and the heat sink ₃₃ are integrally molded, the heat conducting ring 31 and the fins 33 are aluminum alloy.

[0021] Specifically, the cold air is continuously blown into the heat dissipation cover 21 through the intake pipe 23, and when the motor rotates, the rotation of the combination of the plurality of heat dissipation blades and blades is continuously dispersed 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.

[0022] In the plurality of sets of heat dissipating fan blades of the present invention, each set of cooling fins 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.

[0023] By the air cooling 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. .

[0024] In the servo motor main shaft heat dissipating device of the embodiment, the heat dissipating fan blade group has a total of four groups, and is equidistantly disposed on the outer surface of the heat conducting ring 31. A heat dissipation device for a servo motor spindle according to this embodiment has six heat dissipation holes 34 on each of the heat dissipation fins 33. In the heat dissipation device of the servo motor of the present embodiment, 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 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 at the first The diameter of the outer surface of the heat sink 33 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 second heat dissipation. The diameter of the inner surface of the sheet 33. In the servo motor main shaft heat sink of the embodiment, the diameter of the heat dissipation hole 34 of the first heat sink 33 on the outer surface of the first heat sink 33 and the heat dissipation hole 34 of the second heat sink 33 are in the second The outer surface of the heat sink 33 has the same diameter; the heat dissipation hole 34 on the first heat sink 33 is in the The diameter of the inner surface of one of the fins 33 is the same as the diameter of the heat radiating hole 34 of the second fin 33 on the inner surface of the second fin 33. In the servo motor main shaft heat dissipating device 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, Ε 2 > Ε 1.

[0025] 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 patent application are included in the protection of the present patent application. Within the scope

Claims

Claim

[Claim 1] A heat sink for a servo motor main shaft, comprising: a heat conducting ring (31) sleeved on a main shaft (11), and an outer surface of the heat conducting ring (31) extends outwardly to have a plurality of sets of heat dissipating fan blades Each set of cooling fan blades includes two heat sinks (33) arranged in parallel; a disk-shaped heat sink (21) is also provided, and a heat sink (21) is provided with a shaft hole, and the spindle (11) passes through A shaft hole of the heat sink (21), a plurality of air inlets (32) on the back of the heat shield (21), and an intake pipe (23) on the air inlet (32); a heat shield (21) on the back and the motor The top surface is fixed by a connecting rod (24); a cover plate (22) for sealing the heat shield (21) is also included, and a shaft hole is also provided on the cover plate (22), and the main shaft (11) passes through the cover plate ( 22) a shaft hole, each of the heat sinks (33) is provided with a heat dissipation hole (34); 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 (31); There are six cooling holes (34) on the heat sink ( 33); one set of heat sink blades is close to the electricity The heat sink (33) on one side of the body is set as the first heat sink (33), and the other heat sink (33) is set as the second heat sink (33); the heat dissipation holes on the first heat sink (33) ( 34) The number of the heat dissipation holes (34) on the second heat sink (33) is the same as the position set; the heat dissipation holes (34) on the first heat sink (33) are on the first heat sink (33) The diameter of the outer 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), the diameter of the outer surface of the second heat sink (33) It is larger than the diameter of its inner surface on the second fin (33).

[Claim 2] A heat sink for a servo motor spindle according to claim 1, wherein: the heat dissipation hole (34) on the first heat sink (33) is on the outer surface of the first heat sink (33) The diameter of the heat dissipation hole (34) on the second heat sink (33) is the same as the diameter of the outer surface of the second heat sink (33); the heat dissipation hole (34) on the first heat sink (33) is first The diameter of the inner surface of the heat sink (33) is the same as the diameter of the inner surface of the second heat sink (33) with the heat dissipation holes (34) on the second heat sink (33).

[Claim 3] The heat dissipation device for a servo motor spindle according to claim 2, wherein: the first heat dissipation and the heat dissipation hole (34) on the second heat sink (33) have the same size structure and heat dissipation. The inner surface of the hole (34) is a curved surface whose surface formula is:

[Claim 4] A servo motor spindle heat sink according to claim 1, wherein the connecting rod (24) is a screw.

[Claim 5] A heat sink for a servo motor spindle according to claim 1, wherein the heat conducting ring (31) and the heat sink (33) are integrally formed.