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Actuator

一种致动器、内磁轭的技术，应用在电动组件、机电装置、电气元件等方向，能够解决末端执行器温度升高、易发热、输出低等问题，达到抑制温度上升的效果

Active Publication Date: 2017-08-29
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voice coil motor can make the movable part light, but on the other hand, since it is a direct drive motor, there is a problem that the output per volume is low and it tends to generate heat
In addition, there is a problem that heat is directly transferred to an end effector such as a hand attached to a movable part, and the temperature of the end effector increases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0036] refer to Figure 1 to Figure 7 , the actuator according to Embodiment 1 of the present invention will be described.

[0037] In the figure, 1 is the center yoke (inner yoke). The center yoke 1 is composed of a substantially rod-shaped magnetic body.

[0038] A first coil 2 and a second coil 3 are wound around the center yoke 1 with a gap between them. The first coil 2 and the second coil 3 are connected in series or in parallel to a current source (not shown), and currents in opposite directions flow therethrough.

[0039] A third coil 4 is wound in a gap between the first coil 2 and the second coil 3 . The third coil 4 is connected to a current source via a switching control unit not shown, and freely switches the direction of the current flowing independently of the first coil 2 and the second coil 3 .

[0040] A hollow bearing portion 5 is formed along the axis of the center yoke 1 . Bearing members 6a, 6b are inserted through both end portions of the bearing po...

Embodiment approach 2

[0080] refer to Figure 11 ~ Figure 13 , an actuator provided with a hole for air cooling or for refrigerant will be described. Additionally, for Figure 1 to Figure 7 The same structural members of the actuator 202 according to Embodiment 1 shown will be assigned the same reference numerals, and description thereof will be omitted.

[0081] The bottom plate 13 has a plurality of through holes 17a, 17b in the vicinity of the shaft 7 . Center yoke 1 has hole portion 18 communicating with through holes 17a, 17b. The hole portion 18 connects the through holes 17 a and 17 b along the vicinity of the bearing portion 5 , through which air or refrigerant flows. The actuator 203 is thereby constituted.

[0082] Next, refer to Figure 13 , to illustrate the cooling action of the actuator 203.

[0083] First, air or refrigerant is injected into the through hole 17 a of the bottom plate 13 . Air or refrigerant passes through the hole portion 18 of the center yoke 1 and is discharg...

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PUM

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Abstract

An actuator (202) has: a rod-like center yoke (1) inserted through a cylindrical outer yoke (10); a support member for supporting the outer yoke (10) so as to allow linear movement along the axial direction of the center yoke (1); a first coil (2), a second coil (3), and a third coil (4) that are wound round the center yoke (1); a first magnet array (11) and a second magnet array (12) provided in the inner circumferential portion of the outer yoke (10) so as to face the first coil (2), the second coil (3), and the third coil (4); a tabular base plate (13) provided at one end of the center yoke (1); and a heat-radiation member in contact with the base plate.

Description

technical field [0001] The present invention relates to an actuator, and more particularly to a linear actuator installed in a robot or the like for assembling parts. Background technique [0002] Conventionally, an end effector is attached to the tip of a robot to perform various tasks such as component assembly, but as an actuator for driving the end effector, a linear actuator in which the movable part can move linearly freely relative to the fixed part is sometimes used. actuator. [0003] As this linear actuator, a so-called "direct drive actuator" that directly drives a movable part without a speed reducer can be used. [0004] Direct drive actuators can perform high-speed and high-precision motion control, and can expand the working range by linking with robots, but on the other hand, there is a problem that it is difficult to reduce size and increase output. In addition, since the weight that can be attached to the tip of the robot is limited, a compact actuator wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/22H02K9/08H02K41/02
CPCH02K41/031H02K5/18H02K7/106H02K9/227H02K1/06H02K3/28H02K41/035
Inventor 川濑茂
Owner YAMATAKE HONEYWELL CO LTD