초록
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A cutting tool mechanism 11 for providing a cutting, abrading or grinding action is disclosed. The mechanism 11 has an inner circular part 17 having teeth 19 extending radially outwardly, a surrounding circular part 25 having inner teeth 27 extending radially inwardly. The circular parts 17 and 25 co-operate by engagement their teeth 19 and 27. Rotation of one circular part causes the other to move constrained by the engagement of the teeth in an orbital, oscillatory or impact motion. An input coupling 81 is provided for transmission of rotary motion, an...
A cutting tool mechanism 11 for providing a cutting, abrading or grinding action is disclosed. The mechanism 11 has an inner circular part 17 having teeth 19 extending radially outwardly, a surrounding circular part 25 having inner teeth 27 extending radially inwardly. The circular parts 17 and 25 co-operate by engagement their teeth 19 and 27. Rotation of one circular part causes the other to move constrained by the engagement of the teeth in an orbital, oscillatory or impact motion. An input coupling 81 is provided for transmission of rotary motion, and an output coupling 37 is provided to transmit said orbital, oscillatory or impact motion to a blade 13. In further embodiments, the surrounding circular part 25 can be provided with outwardly extending teeth and surrounded by a further outer circular part with inwardly extending teeth, to cooperate with the outwardly extending teeth, to provide more complex orbital, oscillatory or impact motion.
대표
청구항
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1. A cutting abrading or grinding tool mechanism for converting a rotary motion to an orbital, oscillatory or impact motion, said mechanism having: an inner circular part having teeth members extending radially outwardly; anda surrounding circular part having inner teeth members extending radially inwardly;where said inner circular part has fewer teeth members than the number of inner teeth members of said surrounding circular part;where said inner circular part co-operates with said surrounding circular part by engagement of said inner circular part tee...
1. A cutting abrading or grinding tool mechanism for converting a rotary motion to an orbital, oscillatory or impact motion, said mechanism having: an inner circular part having teeth members extending radially outwardly; anda surrounding circular part having inner teeth members extending radially inwardly;where said inner circular part has fewer teeth members than the number of inner teeth members of said surrounding circular part;where said inner circular part co-operates with said surrounding circular part by engagement of said inner circular part teeth members with said surrounding circular part inner teeth members;where, as a one of said inner circular part and said surrounding circular part rotates about a central axis of an input coupling of the mechanism, an other of said inner circular part and said surrounding circular part is configured to move constrained by the engagement of said teeth members of said inner circular part and said surrounding circular part, wherein the engaging teeth members ride along and over each other to provide an orbital, oscillatory or impact motion in the other of said inner circular part and said surrounding circular part; andwhere the input coupling is configured for transmission of rotary motion to the one of said inner circular part and said surrounding circular part, and the other of said inner circular part or said surrounding circular part has an output coupling configured to receive a blade, the output coupling configured to transmit said orbital, oscillatory or impact motion to said blade, and said output coupling configured to oscillate between a maxima away from and a minima toward the central axis of the input coupling. 2. A mechanism as claimed in claim 1, wherein said output coupling is connected with said surrounding circular part, and said input coupling is connected with said inner circular part. 3. A mechanism as claimed in claim 1, wherein said output coupling is connected with said inner circular part, and said input coupling is connected with said surrounding circular part. 4. A cutting abrading or grinding tool mechanism for converting a rotary motion to an orbital, oscillatory or impact motion, said mechanism having: an inner circular part having teeth members extending radially outwardly;a surrounding circular part having inner teeth members extending radially inwardly, and outer teeth members extending radially outwardly; andan outer circular part having inner teeth member extending radially inwardly;where said inner circular part is configured to co-operate with said surrounding circular part by engagement of said inner circular part teeth members with said surrounding circular part teeth members;where said surrounding circular part is configured to co-operate with said outer circular part by engagement of said surrounding circular part teeth members with said outer circular part teeth members;where said inner circular part has fewer teeth members than the number of inner teeth members of said surrounding circular part, and said surrounding circular part has fewer outer teeth members than the number of inner teeth members of said outer circular part;where, as one of said inner circular part and said outer circular part rotates, surrounding circular part is configured to move constrained by the engagement of said teeth members of said inner circular part, said outer circular part, and said surrounding circular part, wherein the engaging teeth members ride along and over each other to provide an orbital, oscillatory or impact motion in said surrounding circular part; andwhere said mechanism has an input coupling configured for transmission of rotary motion to one of said inner circular part and said outer circular part, and said surrounding circular part has an output coupling configured to receive a blade, the output coupling configured to transmit said orbital, oscillatory or impact motion to said blade, and said output coupling configured to oscillate between a maxima away from and a minima toward a central axis of the input coupling. 5. A mechanism as claimed in claim 4, wherein said inner circular part has one fewer teeth members than the number of inner teeth members of said surrounding circular part, and said surrounding circular part has one fewer outer teeth members than the number of inner teeth members of said outer circular part. 6. A mechanism as claimed in claim 4, wherein the output coupling is connected with said surrounding circular part, said input coupling is connected with said inner circular part, and the outer circular part is restrained as a stator. 7. A mechanism as claimed in claim 4, wherein the output coupling is connected with said surrounding circular part, said input coupling is connected with said outer circular part, and the inner circular part is restrained as a stator. 8. A mechanism as claimed in claim 4, wherein the output coupling is connected with said surrounding circular part, said input coupling is connected with said inner circular part, and the outer circular part is connected to a further input coupling for transmission of rotary motion thereto. 9. A mechanism as claimed in claim 8, wherein the input coupling and further input coupling are independently driven, and there is provided independent control of the rotational velocity of motors driving the input coupling and further input coupling, or differential control of the rotational velocity of the rotary motion. 10. A cutting, abrading or grinding tool having a mechanism as claimed in claim 1, having a motor connected for transmission of rotary motion to the input coupling. 11. A cutting, abrading or grinding tool having a mechanism as claimed in claim 8, having a motor connected for transmission of rotary motion to the input coupling and to the further input coupling, where the rotary motion transmitted to the input coupling and to the further input coupling is in opposite directions. 12. A cutting, abrading or grinding tool having a mechanism as claimed in claim 11 including transmission componentry to transmit rotary motion to the input coupling and to the further input coupling in opposite directions. 13. A cutting, abrading or grinding tool having a mechanism as claimed in claim 9, having a first motor connected for transmission of rotary motion to the input coupling and having a second motor connected for transmission of rotary motion to the further input coupling, with the relative speeds of the first motor and second motor being controllable to adjust the movement of the output coupling. 14. A cutting, abrading or grinding tool as claimed in claim 13, wherein the motors are hydraulic rotary motors and valves are utilised to vary the flow/pressure to the hydraulic motors, to effect relative differential speed control. 15. A cutting, abrading or grinding tool having a mechanism as claimed in claim 1, further comprising the blade, the blade attached to the output coupling, the tool having a motor connected for transmission of rotary motion to the input coupling, and wherein the blade attached to the output coupling extends radially from one side of the axis of the output coupling, the tool having an anchor extending from a side of the axis of the output coupling spaced circumferentially from said blade to partially restrain motion of the output coupling. 16. A cutting, abrading or grinding tool as claimed in claim 15, wherein the blade is arcuate in configuration. 17. A cutting, abrading or grinding tool as claimed in claim 15, wherein the anchor extends from a circumferential position attached relative to said output coupling substantially opposite circumferentially to where said blade attaches to said output coupling. 18. A cutting, abrading or grinding tool as claimed in claim 15, wherein said anchor comprises a resiliently flexible member. 19. A cutting abrading or grinding tool comprising a mechanism for converting a rotary motion to an orbital, oscillatory or impact motion, said mechanism having: an inner circular part having teeth members extending radially outwardly;a surrounding circular part having inner teeth members extending radially inwardly, and outer teeth members extending radially outwardly; andan outer circular part having inner teeth member extending radially inwardly;where said inner circular part is configured to co-operate with said surrounding circular part by engagement of said inner circular part teeth members with said surrounding circular part teeth members;where said surrounding circular part is configured to co-operate with said outer circular part by engagement of said surrounding circular part teeth members with said outer circular part teeth members;where said inner circular part has fewer teeth members than the number of inner teeth members of said surrounding circular part, and said surrounding circular part has fewer outer teeth members than the number of inner teeth members of said outer circular part; andwhere, as one of said inner circular part and said outer circular part rotates, said surrounding circular part is configured to move constrained by the engagement of said teeth members of said inner circular part, said outer circular part, and said surrounding circular part, wherein the engaging teeth members ride along and over each other to provide an orbital, oscillatory or impact motion in said surrounding circular part;the cutting abrading or grinding tool further comprising a motor for supplying rotary motion to at least one of said inner circular part and said outer circular part, said surrounding circular part having an output coupling configured to receive a blade, the output coupling configured to transmit said orbital, oscillatory or impact motion to said blade, and said output coupling configured to oscillate between a maxima away from and a minima toward a central axis of the input coupling to move teeth of said blade through orbital/oscillatory traces according to relative speeds of rotation of said inner circular part and said outer circular part. 20. A mechanism as claimed in claim 19, wherein said inner circular part has one fewer teeth members than the number of inner teeth members of said surrounding circular part, and said surrounding circular part has one fewer outer teeth members than the number of inner teeth members of said outer circular part. 21. A mechanism as claimed in claim 20, wherein said motor is connected with said inner circular part, and the outer circular part is connected to a second motor for transmission of rotary motion thereto.
