Apparatus and system for testing idle position of servo

Patent metadata

Field	Value
Publication number	US-2018188136-A1
Application number	US-201715641228-A
Country	US
Kind code	A1
Filing date	Jul 4, 2017
Priority date	Dec 30, 2016
Publication date	Jul 5, 2018
Grant date	—

Abstract

The present disclosure is an apparatus for testing an idle position of a servo, including: driving mechanism, a transmission unit transmitting torque of a driving servo to a testing servo, and a control circuit electrically connecting to the driving servo and the testing servo to acquire idle position information. The apparatus drives the output shaft of the testing servo to rotate by an external driving mechanism, and measures an amount of rotation of the output shaft by an internal sensor of the testing servo. Therefore, an external sensor may not be provided, and a problem of precision installation of the external sensor can be avoided. Further, a problem caused by poorly install the external sensor and the output shaft can also be avoided, and accuracy of a testing result can be increased.

First claim

What is claimed is:

1 . An apparatus for testing an idle position of a servo, comprising:
a driving mechanism configured to connect to an output shaft of a testing servo, and to drive the output shaft of the testing servo to rotate; wherein the driving mechanism comprises a driving servo having a driving shaft, and a transmission unit connecting to the driving shaft; wherein the transmission unit transmits torque of the driving shaft to the output shaft of the testing servo; and a control circuit configured to electrically connect to the driving servo and the testing servo; wherein the control circuit drives the driving servo to rotate, and loads angle information of internal sensors of the testing servo and the driving servo.

2 . The apparatus for testing the idle position of the servo as claimed in claim 1 , wherein the transmission unit comprises:
a driving gear having a gear shaft; wherein a head of the gear shaft of the driving gear connecting to the driving shaft of the driving servo through a bushing; and a driven gear configured to engage with the driving gear; wherein a head of a gear shaft of the driven gear connects to the output shaft of the testing servo through a bushing.

3 . The apparatus for testing the idle position of the servo as claimed in claim 2 , wherein the bushing is a spline bushing.

4 . The apparatus for testing the idle position of the servo as claimed in claim 3 , wherein the spline bushings respectively comprises a stopping step mounted in a middle of an inner wall of the spline bushing.

5 . The apparatus for testing the idle position of the servo as claimed in claim 2 , wherein the apparatus further comprises a box body receiving and support the driving gear and the driven gear.

6 . The apparatus for testing the idle position of the servo as claimed in claim 5 , wherein the box body comprises:
a first side wall; a second side wall opposite to the first side wall; wherein the head of the gear shaft of the driving gear pierces out the first side wall; wherein the head of the gear shaft of the driven gear pierces out the second side wall.

7 . The apparatus for testing the idle position of the servo as claimed in claim 6 , wherein the apparatus further comprises:
a first flange configured to be mounted on the first side wall of the box body; wherein the head of the gear shaft of the driving gear is supported by the first flange though a bearing; a second flange configured to be mounted on the second side wall of the box body; wherein the head of the gear shaft of the driven gear is supported by the second flange though the bearing.

8 . The apparatus for testing the idle position of the servo as claimed in claim 2 , wherein a structure between the driving gear and the driving shaft of the transmission unit is the same as a structure between the driven gear and the output shaft.

9 . The apparatus for testing the idle position of the servo as claimed in claim 1 , wherein the apparatus further comprises:
a support platform, wherein the driving mechanism and the control circuit are arranged on the support platform.

10 . A testing system of an idle position of a servo, comprising:
a testing servo, an apparatus for testing the idle position of the servo, comprising:
a driving mechanism configured to connect to an output shaft of a testing servo, and to drive the output shaft of the testing servo to rotate; wherein the driving mechanism comprises a driving servo having a driving shaft, and a transmission unit connecting to the driving shaft; wherein the transmission unit transmits torque of the driving shaft to the output shaft of the testing servo; and
a control circuit configured to electrically connect to the driving servo and the testing servo; wherein the control circuit drives the driving servo to rotate, and loads angle information of internal sensors of the testing servo and the driving servo;
wherein an output shaft of the testing servo connects to the driving mechanism of the apparatus; wherein inner sensors of the testing servo electrically connects to the control circuit of the apparatus.

11 . The testing system of the idle position of the servo as claimed in claim 10 , wherein the transmission unit of the apparatus comprises:
a driving gear having a gear shaft; wherein a head of the gear shaft of the driving gear connecting to the driving shaft of the driving servo through a bushing; and a driven gear configured to engage with the driving gear; wherein a head of a gear shaft of the driven gear connects to the output shaft of the testing servo through a bushing.

12 . The testing system of the idle position of the servo as claimed in claim 11 , wherein the bushing of the apparatus is a spline bushing.

13 . The testing system of the idle position of the servo as claimed in claim 12 , wherein the spline bushings of the apparatus respectively comprises a stopping step mounted in a middle of an inner wall of the spline bushing.

14 . The testing system of the idle position of the servo as claimed in claim 11 , wherein the apparatus further comprises a box body receiving and support the driving gear and the driven gear.

15 . The testing system of the idle position of the servo as claimed in claim 14 , wherein the box body of the apparatus comprises:
a first side wall; a second side wall opposite to the first side wall; wherein the head of the gear shaft of the driving gear pierces out the first side wall; wherein the head of the gear shaft of the driven gear pierces out the second side wall.

16 . The testing system of the idle position of the servo as claimed in claim 15 , wherein the apparatus further comprises:
a first flange configured to be mounted on the first side wall of the box body; wherein the head of the gear shaft of the driving gear is supported by the first flange though a bearing; a second flange configured to be mounted on the second side wall of the box body; wherein the head of the gear shaft of the driven gear is supported by the second flange though the bearing.

17 . The testing system of the idle position of the servo as claimed in claim 11 , wherein a structure between the driving gear and the driving shaft of the transmission units is the same as a structure between the driven gear and the output shaft.

18 . The testing system of the idle position of the servo as claimed in claim 10 , wherein the apparatus further comprises:
a support platform, wherein the driving mechanism and the control circuit are arranged on the support platform.

Assignees

• Ubtech Robotics Corp

Inventors

• Zhu Hongbo
• Zhang Lifu
• Xiong Youjun

Classifications

• G01B21/22 Primary

  for measuring angles or tapers; for testing the alignment of axes · CPC title

• B25J9/0021 Primary

  All motors in base · CPC title

• G01M13/02 Primary

  Gearings; Transmission mechanisms · CPC title

• H02P7/28

  using semiconductor devices · CPC title