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Actuator equipped with failure detection sensor and method for detecting failure in actuator

A fault detection and actuator technology, applied in the measurement of vibration, instruments, measurement devices, etc., can solve problems such as hindering the smooth movement of movable bodies

Active Publication Date: 2019-04-26
THK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failures such as surface peeling as mentioned above prevent smooth movement of the movable body

Method used

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  • Actuator equipped with failure detection sensor and method for detecting failure in actuator
  • Actuator equipped with failure detection sensor and method for detecting failure in actuator
  • Actuator equipped with failure detection sensor and method for detecting failure in actuator

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Embodiment Construction

[0021] Hereinafter, an actuator with a sensor for failure detection and a method for detecting a failure of the actuator according to an embodiment of the present invention will be described in detail with reference to the drawings. However, the actuator with a sensor for failure detection and the failure detection method for the actuator of the present invention can be embodied in various forms, and are not limited to the embodiments described in this specification. This embodiment is provided with the intention that those skilled in the art will fully understand the scope of the invention by sufficiently disclosing it in the specification.

[0022] (Actuator with sensor for failure detection according to the first embodiment of the present invention)

[0023] figure 1 It is a schematic side view of the actuator 10 with a sensor for failure detection concerning 1st Embodiment of this invention. The actuator 10 of the present embodiment includes a linear guide portion 4 that...

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Abstract

Provided is an actuator equipped with a failure detection sensor that makes it easy to detect a failure of a linear guide unit and / or ball screw unit using the same sensor. An actuator (10) is provided with a linear guide unit (4) that guides a movable body (1) to move rectilinearly, and a ball screw unit (7) that drives the movable body (1) in the axial direction of a threaded shaft (6), whereina sensor (18) for detecting a failure of the actuator (10) is disposed in a housing (11) that accommodates a coupling (12) that couples the threaded shaft (6) and a motor (14) that rotates the threaded shaft (6).

Description

technical field [0001] The present invention relates to an actuator with a sensor for fault detection and a fault detection method for the actuator. Background technique [0002] There is known an actuator in which a linear guide part and a ball screw part are combined, that is, the linear guide part guides the movable body to move linearly, and the ball screw part guides the movable body along the axial direction of the screw shaft. Actuator for driving. [0003] The linear guide uses the rolling motion of multiple rolling elements such as balls and rollers to guide the linear movement of the movable body. The ball screw unit includes a plurality of rolling balls between the screw shaft and the nut, and the nut is driven in the axial direction of the screw shaft by rotating the screw shaft. [0004] When the actuator is used for a long time, at least one of the rolling elements and the rolling element rolling surfaces of the linear guide part and the ball screw part will ...

Claims

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Application Information

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IPC IPC(8): G01M13/00
CPCG01M13/00G01H17/00G01M13/045G01M15/12G01M13/028G01H1/003
Inventor 本所善之山中修平
Owner THK CO LTD