Counter-rotating polisher

• US 8,894,470 B2
• Filed: 11/30/2013
• Issued: 11/25/2014
• Est. Priority Date: 09/20/2010
• Status: Active Grant

• Current Assignee: Hammer Electric Power Tools Co., Ltd.
• Original Assignee: Hammer Electric Power Tools Co., Ltd.
• Inventors: Huang, Jianchu, Wang, Kewei, Chu, Kunyuan, Xu, Xiaoping, Zhu, Ligang
• Primary Examiner(s): Morgan, Eileen P.
• Application Number:
  US14/093,435
• Publication Number:
  US 20140080390A1
• Time in Patent Office: 360 Days
• Field of Search: 451/259, 451/294, 451/344, 451/350, 451/353, 451/357, 451/359
• US Class Current: 451/359
• CPC Class Codes: B24B 23/02 with rotating grinding tools; Accessories therefor
• CPC Class Codes: B24B 23/03 the tool being driven in a combined movement

Abstract

A counter-rotating polisher includes: an enclosure, an electric motor, a polishing arrangement and a counter-rotating arrangement. The electric motor is fixed to the enclosure and includes a driving axle. The polishing arrangement includes two polishing device. The polishing devices respectively include a fixed tray and a polishing material that are fixedly connected to an outside of the fixed tray. The fixed tray is perpendicular to the driving axle. The counter-rotating arrangement includes a first driving wheel, a second driving wheel and a change-direction wheel. The first driving wheel is connected to the driving axle and driven by the driving axle. The second driving wheel is fixedly connected to the second fixed tray. The change-direction wheel is connected to the first driving wheel and the second driving wheel. The driving axle rotates the first polishing material positively. The change-direction wheel reversely transmits the rotation to the second driving wheel.

Claims

1. A counter-rotating polisher, comprising:

an enclosure;

an electric motor, fixed inside said enclosure, and comprising a driving axle;

a polishing arrangement, driven by said electric motor, comprising a first polishing device, comprising a first fixed tray perpendicular to said driving axle and a first polishing material fixedly connected to an outer wall of said first fixed tray, and a second polishing device, comprising a second fixed tray perpendicular to said driving axle and a second polishing material fixedly connected to an outer wall of said second fixed tray, wherein a polishing surface of said first polishing material and a polishing surface of second polishing material are on a same plane and rotate coaxially and oppositely; and

a counter-rotating arrangement, comprising a first driving wheel connected to said driving axle and driven by said driving axle, a second driving wheel fixedly connected to said second fixed tray, and a change-direction wheel connected to said first driving wheel and said second driving wheel, wherein said first fixed tray is connected to said driving axle and driven by said driving axle to rotate said first polishing material positively, said change-direction wheel reversely transmits a rotation of said first driving wheel to said second driving wheel to rotate said second polishing material oppositely,

wherein said first polishing material and said second polishing material have predetermined sizes to produce approximately equal but opposite reacting forces on a polished object to be counteracted to stabilize said counter-rotating polisher;

wherein said counter-rotating arrangement further comprises a bearing, said first fixed tray is fixed directly to said driving axle, said bearing is sleeved on said driving axle, said second driving wheel is connected to said bearing, in such a manner that said second driving wheel does not rotate along with said driving axle directly to make said first fixed tray and said second fixed tray rotate coaxially and oppositely;

wherein said counter-rotating arrangement further comprises a reinforced bearing, which is mounted between said second driving wheel and said enclosure to make said second driving wheel run smoothly and increase a rigidity of said driving axle of said electric motor;

wherein said first driving wheel and said second driving wheel are set in parallel and perpendicular to said change-direction wheel, said change-direction wheel is rotatably mounted on said enclosure, said first driving wheel and said second driving wheel are respectively mounted on an upper end and a lower end of said change-direction wheel to connect to said change-direction wheel by wheel teeth, wherein a rotation of said first driving wheel is reversely transmitted to said second driving wheel because the running directions of an upper side and a lower side of said change-direction wheel are opposite; and

wherein said electric motor is aligned coaxially with said first driving wheel and said second driving wheel.