Counter-rotating polisher

• US 20120088442A1
• Filed: 11/15/2010
• Published: 04/12/2012
• 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, Zhu, Kunyuan, Xu, Xiaoping, Zhu, Ligang
• Granted Patent: US 8,662,965 B2
• Time in Patent Office: Days
• US Class Current: 451/442
• 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.

2. The counter-rotating polisher, as recited in claim 1, 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.

3. The counter-rotating polisher, as recited in claim 1, wherein said counter-rotating arrangement further comprises a reinforced bearing, which is mounted between said 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.

4. The counter-rotating polisher, as recited in claim 2, wherein said counter-rotating arrangement further comprises a reinforced bearing, which is mounted between said 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.

5. The counter-rotating polisher, as recited in claim 1, 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 rotatablely 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, an aim that a rotation of said first driving wheel is reversely transmitted to said second driving wheel is achieved through a theory that the running directions of an upper side and a lower side of said change-direction wheel are opposite.

6. The counter-rotating polisher, as recited in claim 4, 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 rotatablely 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, an aim that a rotation of said first driving wheel is reversely transmitted to said second driving wheel is achieved through a theory that the running directions of an upper side and a lower side of said change-direction wheel are opposite.

7. The counter-rotating polisher, as recited in claim 1, wherein said counter-rotating arrangement further comprises a belt, 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 rotatablely mounted on said enclosure, said belt is sleeved on said first driving wheel, extends to said change-direction wheel, extends back to said second driving wheel and is sleeved on said second driving wheel after rounding said change-direction wheel to change a running direction of said belt through said change-direction wheel, so that said first driving wheel and said second driving wheel rotate coaxially and oppositely.

8. The counter-rotating polisher, as recited in claim 4, wherein said counter-rotating arrangement further comprises a belt, 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 rotatablely mounted on said enclosure, said belt is sleeved on said first driving wheel, extends to said change-direction wheel, extends back to said second driving wheel and is sleeved on said second driving wheel after rounding said change-direction wheel to change a running direction of said belt through said change-direction wheel, so that said first driving wheel and said second driving wheel rotate coaxially and oppositely.

9. The counter-rotating polisher, as recited in claim 1, wherein said change-direction wheel comprises a first part and a second part which rotate coaxially and oppositely, said first part and said second part are respectively positioned on two sides of said first driving wheel and said second driving wheel to respectively take over said belt which is extended to said two sides for creating opposite rotation through the rotation of said first driving wheel, so the rotation is reversely transmitted to said second driving wheel.

10. The counter-rotating polisher, as recited in claim 8, wherein said change-direction wheel comprises a first part and a second part which rotate coaxially and oppositely, said first part and said second part are respectively positioned on two sides of said first driving wheel and said second driving wheel to respectively take over said belt which is extended to said two sides for creating opposite rotation through the rotation of said first driving wheel, so the rotation is reversely transmitted to said second driving wheel.

11. The counter-rotating polisher, as recited in claim 1, wherein a diameter of said change-direction wheel is equal to a distance between said first driving wheel and said second driving wheel, said first driving wheel and said second driving wheel are respectively perpendicular to said upper end and said lower end of said change-direction wheel to make a part of said belt which is extended from said first driving wheel to said change-direction wheel and another part of said belt which is extended from said change-direction wheel to said second driving wheel in parallel, a running direction of said belt and the rotation directions of said first driving wheel and said second driving wheel are in a line.

12. The counter-rotating polisher, as recited in claim 10, wherein a diameter of said change-direction wheel is equal to a distance between said first driving wheel and said second driving wheel, said first driving wheel and said second driving wheel are respectively perpendicular to said upper end and said lower end of said change-direction wheel to make a part of said belt which is extended from said first driving wheel to said change-direction wheel and another part of said belt which is extended from said change-direction wheel to said second driving wheel in parallel, a running direction of said belt and the rotation directions of said first driving wheel and said second driving wheel are in a line.

13. The counter-rotating polisher, as recited in claim 1, wherein said counter-rotating arrangement comprises two change-direction wheels, said first driving wheel and said second driving wheel are set in parallel, said two change-direction wheel are set side by side, respectively perpendicular and aligned with said first driving wheel and said second driving wheel, so that said part of said belt which is extended from said first driving wheel to said change-direction wheel and another part of said belt which is extended from said change-direction wheel to said second driving wheel in parallel.

14. The counter-rotating polisher, as recited in claim 1, wherein said counter-rotating arrangement further comprises an adjusting unit, said enclosure has a through-hole, wherein said adjusting unit comprises an adjusting lever mounted on said enclosure through said through-hole, said adjusting lever has an inner end which is connected to said change-direction wheel, said adjusting lever is able to move from said first driving wheel to said change-direction wheel along said belt to adjust a tightness degree of said belt through changing a distance between said change-direction wheel and said first driving wheel and said second driving wheel.

15. The counter-rotating polisher, as recited in claim 2, wherein said counter-rotating arrangement further comprises an adjusting unit, said enclosure has a through-hole, wherein said adjusting unit comprises an adjusting lever mounted on said enclosure through said through-hole, said adjusting lever has an inner end which is connected to said change-direction wheel, said adjusting lever is able to move from said first driving wheel to said change-direction wheel along said belt to adjust a tightness degree of said belt through changing a distance between said change-direction wheel and said first driving wheel and said second driving wheel.

16. The counter-rotating polisher, as recited in claim 12, wherein said counter-rotating arrangement further comprises an adjusting unit, said enclosure has a through-hole, wherein said adjusting unit comprises an adjusting lever mounted on said enclosure through said through-hole, said adjusting lever has an inner end which is connected to said change-direction wheel, said adjusting lever is able to move from said first driving wheel to said change-direction wheel along said belt to adjust a tightness degree of said belt through changing a distance between said change-direction wheel and said first driving wheel and said second driving wheel.

17. The counter-rotating polisher, as recited in claim 14, wherein said adjusting unit further comprises an adjusting knob mounted on said enclosure, said adjusting lever has an outer end, said outer end is connected to said adjusting knob via a screw thread, when one screws said adjusting knob, the degree of tightness of said belt will be adjusted through adjusting a position of said adjusting lever.

18. The counter-rotating polisher, as recited in claim 14, wherein said inner end of said adjusting lever is fixedly connected to a rotating axle, said first part and said second part are respectively rotate coaxially and oppositely with respect to said rotating axle, said enclosure had two sliding grooves, said two sliding grooves are provided along a moving direction of said adjusting lever, two ends of said rotating axle are respectively contained in said two sliding grooves to move along said two sliding grooves when adjusting said belt to increase a stability of said adjusting unit.

19. The counter-rotating polisher, as recited in claim 14, wherein said adjusting unit further comprises:

an adjusting spring mounted on said adjusting lever;

a support frame, mounted on said adjusting lever, capable of sliding along said adjusting lever and fixedly connected to said change-direction wheel, wherein said adjusting spring is compressed between said support frame and said inner end of said adjusting lever, said adjusting spring acts on said support frame and pushes off said support frame from said inner end of said adjusting lever to tighten said belt, said adjusting spring is capable of adjusting the degree of tightness of said belt within a predetermined range, even said belt becomes loose by using.

20. The counter-rotating polisher, as recited in claim 1, wherein said counter-rotating arrangement further comprises an adjusting unit, said enclosure has a through-hole, wherein said adjusting unit further comprises an adjusting spring, said adjusting spring is mounted between said enclosure and said change-direction wheel, said adjusting spring is stretched from said first driving wheel to said change-direction wheel along said belt, and creates a force to pull said change-direction wheel away from said first driving wheel and said second driving wheel to tighten said belt, said enclosure has two sliding grooves provided along a stretching direction of said adjusting spring, said two ends of said rotating axle are respectively received in said two sliding grooves to move along said two sliding grooves when adjusting said belt to increase a stability of said adjusting unit.