GB2053759A - Improvements in or relating to cutting devices - Google Patents

Improvements in or relating to cutting devices Download PDF

Info

Publication number
GB2053759A
GB2053759A GB8021402A GB8021402A GB2053759A GB 2053759 A GB2053759 A GB 2053759A GB 8021402 A GB8021402 A GB 8021402A GB 8021402 A GB8021402 A GB 8021402A GB 2053759 A GB2053759 A GB 2053759A
Authority
GB
United Kingdom
Prior art keywords
routing
gear
chucks
cutters
chuck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8021402A
Other versions
GB2053759B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB8021402A priority Critical patent/GB2053759B/en
Publication of GB2053759A publication Critical patent/GB2053759A/en
Application granted granted Critical
Publication of GB2053759B publication Critical patent/GB2053759B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/20—Portable devices or machines; Hand-driven devices or machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

A routing tool, the head of which has two chucks (1, 3) rotatably mounted thereon which are arranged to be contra- rotatable. The invention is particularly appropriate to hand held routing tools whereby the contra-rotating chucks ensure that the sideways forces generated by the routing cutters (19) are self-negating, ensuring that the tool moves easily in the required direction when, for example, cutting away jagged or projecting sections of metal during in situ repairs to battle-damaged vehicles. <IMAGE>

Description

SPECIFICATION Improvements in or relating to cutting devices The present invention relates to cutting devices and particularly to hand-held routing tools.
It is often the practice when carrying out in-situ repairs to battle-damaged vehicles to use hand-held routing tools to cut away jagged or projecting sections of metal. In such use a conventional routing tool is difficult to handle because the transverse forces set-up during cutting are difficult to resist manually and cause the tool to wander from the intended cutting path.
According to the present invention a routing tool head has two chucks rotatably mounted thereon which are arranged to be contra-rotatable.
According to a further feature of the present invention one chuck is drivable from the other.
In a preferred form of the present invention the centre distance between the chucks is adjustable.
A routing tool head in accordance with the present invention will now be described by way of example with reference to Figure 1 which is a schematic view of the head.
The routing tool head comprises a first chuck assembly 1 which is drivable from a motor 2, which is part of a hand tool 2a (not shown), and a second chuck assembly 3 which is driven from the first chuck assembly through a gear train assembly 4.
The first chuck assembly 1 includes a drive shaft 5 which is driven by the motor 2 through a dog clutch 6. Fixedly mounted on the drive shaft 5 is a first chuck 7 and a drive gear 8.
The second chuck assembly 3 includes a driven shaft 9 which is rotatably mounted within a housing 10. The housing 10 is adjustable with respect to the first chuck assembly 1 by means of an adjusting screw 11. A second chuck 12 and a driven gear 13 are fixedly mounted on the driven shaft 9.
The gear train assembly 4 includes a first intermediate gear 14which is meshed with the driving gear 8 and a second intermediate gear 15 which is meshed with the first gear 14 and the driven gear 13.
The gears 14 and 15 are rotatably mounted in a carrier bracket 16 which is pivotable about a fixed spigot 17. A leaf spring 18 is disposed against the carrier bracket 16 so that the intermediate gears 14 and 15 are enmeshed with the drive gear 8 and the driven gear 13 respectively.
The head is prepared for use by combining it with the hand tool 2a and inserting two routing cutters 19 in the chucks 7 and 12.
In use the motor 2 is activated and the drive from the motor transmitted to the driven shaft 5 through the dog clutch 6 so that the chuck 7 and the drive gear 8 are set in clockwise rotation. Rotation of the drive gear 8 is transmitted to the driven gear 13 via the intermediate gears 14 and 15 such that the driven gear 13 rotates in an anti-clockwise direction. The routing cutters 19 are thus set in contra-rotation.
During the cutting operation of the tool the sideways forces generated by the routing cutters are self-negating and the tool moves easily in the required direction of cutting.
When required the centre distance between the chucks 7 and 12 may be adjusted to accommodate routing cutters of varying diameter. To adjust the centre distance the adjusting screw 11 is turned to move the housing 10 closer to or further from the first chuck assembly 1. During such adjustment the spring 18 acts against the carrier bracket 16 so that intermediate gears 14 and 15 remain enmeshed with the drive gear 8 and the driven gear 13 respectively.
In an alternative embodiment of the present invention the driven shaft 9 may be driven from the drive shaft 5 by means of a continuous drive belt with provision for centre distance adjustment being provided by means of a jockey pulley assembly.
A slip mechanism may be incorporated into the drive of the routing tool to avoid any catastrophic jamming of material between the cutters. This problem may be further alleviated by the provision of a clearing-guard at the rear of the cutters to remove generated swarf therefrom.
1. A routing tool head having two chucks rotatably mounted thereon, which are arranged to be contra-rotatable.
2. A routing tool head as claimed in claim 1 and wherein one chuck is drivable from the other.
3. A routing tool head as claimed in claim 1 or claim 2 and wherein the centre distance between the chucks is adjustable.
4. A routing tool head as claimed in any one of the preceding claims and including a slip mechanism which, in use, prevents catastrophic jamming of material between cutters mounted in the chucks.
5. A routing tool head as claimed in any one of preceding claims having a clearing member mounted thereon which, in use, disperses material generated by cutters mounted in the chucks.
6. A routing tool incorporating a head as claimed in any one of the preceding claims.
7. A routing tool head substantially as hereinbefore described with reference to Figure 1.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements in or relating to cutting devices The present invention relates to cutting devices and particularly to hand-held routing tools. It is often the practice when carrying out in-situ repairs to battle-damaged vehicles to use hand-held routing tools to cut away jagged or projecting sections of metal. In such use a conventional routing tool is difficult to handle because the transverse forces set-up during cutting are difficult to resist manually and cause the tool to wander from the intended cutting path. According to the present invention a routing tool head has two chucks rotatably mounted thereon which are arranged to be contra-rotatable. According to a further feature of the present invention one chuck is drivable from the other. In a preferred form of the present invention the centre distance between the chucks is adjustable. A routing tool head in accordance with the present invention will now be described by way of example with reference to Figure 1 which is a schematic view of the head. The routing tool head comprises a first chuck assembly 1 which is drivable from a motor 2, which is part of a hand tool 2a (not shown), and a second chuck assembly 3 which is driven from the first chuck assembly through a gear train assembly 4. The first chuck assembly 1 includes a drive shaft 5 which is driven by the motor 2 through a dog clutch 6. Fixedly mounted on the drive shaft 5 is a first chuck 7 and a drive gear 8. The second chuck assembly 3 includes a driven shaft 9 which is rotatably mounted within a housing 10. The housing 10 is adjustable with respect to the first chuck assembly 1 by means of an adjusting screw 11. A second chuck 12 and a driven gear 13 are fixedly mounted on the driven shaft 9. The gear train assembly 4 includes a first intermediate gear 14which is meshed with the driving gear 8 and a second intermediate gear 15 which is meshed with the first gear 14 and the driven gear 13. The gears 14 and 15 are rotatably mounted in a carrier bracket 16 which is pivotable about a fixed spigot 17. A leaf spring 18 is disposed against the carrier bracket 16 so that the intermediate gears 14 and 15 are enmeshed with the drive gear 8 and the driven gear 13 respectively. The head is prepared for use by combining it with the hand tool 2a and inserting two routing cutters 19 in the chucks 7 and 12. In use the motor 2 is activated and the drive from the motor transmitted to the driven shaft 5 through the dog clutch 6 so that the chuck 7 and the drive gear 8 are set in clockwise rotation. Rotation of the drive gear 8 is transmitted to the driven gear 13 via the intermediate gears 14 and 15 such that the driven gear 13 rotates in an anti-clockwise direction. The routing cutters 19 are thus set in contra-rotation. During the cutting operation of the tool the sideways forces generated by the routing cutters are self-negating and the tool moves easily in the required direction of cutting. When required the centre distance between the chucks 7 and 12 may be adjusted to accommodate routing cutters of varying diameter. To adjust the centre distance the adjusting screw 11 is turned to move the housing 10 closer to or further from the first chuck assembly 1. During such adjustment the spring 18 acts against the carrier bracket 16 so that intermediate gears 14 and 15 remain enmeshed with the drive gear 8 and the driven gear 13 respectively. In an alternative embodiment of the present invention the driven shaft 9 may be driven from the drive shaft 5 by means of a continuous drive belt with provision for centre distance adjustment being provided by means of a jockey pulley assembly. A slip mechanism may be incorporated into the drive of the routing tool to avoid any catastrophic jamming of material between the cutters. This problem may be further alleviated by the provision of a clearing-guard at the rear of the cutters to remove generated swarf therefrom. CLAIMS
1. A routing tool head having two chucks rotatably mounted thereon, which are arranged to be contra-rotatable.
2. A routing tool head as claimed in claim 1 and wherein one chuck is drivable from the other.
3. A routing tool head as claimed in claim 1 or claim 2 and wherein the centre distance between the chucks is adjustable.
4. A routing tool head as claimed in any one of the preceding claims and including a slip mechanism which, in use, prevents catastrophic jamming of material between cutters mounted in the chucks.
5. A routing tool head as claimed in any one of preceding claims having a clearing member mounted thereon which, in use, disperses material generated by cutters mounted in the chucks.
6. A routing tool incorporating a head as claimed in any one of the preceding claims.
7. A routing tool head substantially as hereinbefore described with reference to Figure 1.
GB8021402A 1979-07-02 1980-06-30 Cutting devices Expired GB2053759B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8021402A GB2053759B (en) 1979-07-02 1980-06-30 Cutting devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7922975 1979-07-02
GB8021402A GB2053759B (en) 1979-07-02 1980-06-30 Cutting devices

Publications (2)

Publication Number Publication Date
GB2053759A true GB2053759A (en) 1981-02-11
GB2053759B GB2053759B (en) 1983-01-06

Family

ID=26272037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8021402A Expired GB2053759B (en) 1979-07-02 1980-06-30 Cutting devices

Country Status (1)

Country Link
GB (1) GB2053759B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001152A1 (en) * 1985-08-14 1987-02-26 Darabi Fard Akbar Construction industry tool
EP0606052A1 (en) * 1992-12-30 1994-07-13 Ditta Bacci Paolino Di Giuseppe Bacci Di Agostino Bacci Working unit with two spindles for machine tools, for the machining of workpieces made of wood or similar material
IT202200001280A1 (en) * 2022-01-26 2023-07-26 Raffaele Guerrieri STRUCTURE OF PORTABLE BEVELING MACHINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001152A1 (en) * 1985-08-14 1987-02-26 Darabi Fard Akbar Construction industry tool
EP0606052A1 (en) * 1992-12-30 1994-07-13 Ditta Bacci Paolino Di Giuseppe Bacci Di Agostino Bacci Working unit with two spindles for machine tools, for the machining of workpieces made of wood or similar material
IT202200001280A1 (en) * 2022-01-26 2023-07-26 Raffaele Guerrieri STRUCTURE OF PORTABLE BEVELING MACHINE

Also Published As

Publication number Publication date
GB2053759B (en) 1983-01-06

Similar Documents

Publication Publication Date Title
US3651569A (en) Device for working a cylindrical work-piece
CA2470189C (en) Pipe cutter
KR100635125B1 (en) Cutter
US4388846A (en) Fixture for resurfacing vehicle brake discs
EP2036686A2 (en) Saw with increased depth of cut
DE4344849A1 (en) Machine tool
EP3079868B1 (en) Miter saw including a chain drive
US5282704A (en) Portable drilling apparatus
EP1375055B1 (en) A portable boring and welding machine with gear wheels
GB2053759A (en) Improvements in or relating to cutting devices
US4452111A (en) Adjustable disk and drum lathe mechanism with automatic drive
CA2452050A1 (en) A device for spirally cutting a workpiece
US2519526A (en) Portable power-driven saw
US4621405A (en) Drive mechanism for the main spindle of a rotating tool turret machine
EP0600394B1 (en) Weld bead cutter mechanism
US20030121155A1 (en) Pipe cutter
AU616729B2 (en) Brake lathe
US2718248A (en) Portable motor driven plane
NL1013171C2 (en) Hand tool machine, especially cord saw.
JP3509481B2 (en) Deburring device
US4488381A (en) Cutter apparatus
EP0838296B1 (en) Sawing machine including a sawdust removing device
KR200303660Y1 (en) Cutting device for wood
JP2004017191A (en) Work surface machining device
JP3476581B2 (en) Moving member position adjustment device

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee