GB1287832A - - Google Patents

Info

Publication number
GB1287832A
GB1287832A GB4735070A GB4735070A GB1287832A GB 1287832 A GB1287832 A GB 1287832A GB 4735070 A GB4735070 A GB 4735070A GB 4735070 A GB4735070 A GB 4735070A GB 1287832 A GB1287832 A GB 1287832A
Authority
GB
United Kingdom
Prior art keywords
grinding
drill
housing
guide
channel
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.)
Expired
Application number
GB4735070A
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 filed Critical
Publication of GB1287832A publication Critical patent/GB1287832A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
    • B24B3/265—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills using devices specially adapted for domestic use

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

1287832 Grinding drills R A WURSCHER 6 Oct 1970 [7 Oct 1969] 47350/70 Addition to 1202600 Heading B3D Apparatus for grinding drills having two primary cutting edges, each having an associated clearance surface and a flute, comprises a rotatable grinding disc 10 having two inclined faces 11, 12 for the simultaneous grinding of the primary cutting edges, and a guide block 4 disposed to face the grinding disc and having at least one guide channel 5, 6 to receive a drill for rotation about its axis, and at least one guide lug 15 disposed in the or each channel and engageable with a flute of the drill when inserted in the channel to limit rotation of the drill. The guide block 4 is screwed into a housing 1 connected by a flange 2 to a drive motor 3 having a shaft 7 for a wheel 9 carrying the grinding disc 10. The face of the disc is formed with the two inclined surfaces 11, 12 which are separated by a slot 13. Two guide lugs 15 are formed in each channel for engaging the flutes and limiting the rotation of a drill 18 as it is sharpened by the surfaces 11, 12. In another embodiment, the housing can be clamped to the bearing neck of an electric hand tool and a rubber drive member is secured to the grinding wheel and has a conical recess for engaging the chuck of the drill. In a further embodiment, the guide lugs are mounted on a plate adjacent the housing for the channels and its distance from the grinding wheel is adjustable to compensate for wear of the wheel and spring- pressed towards the housing. In yet another embodiment, the grinding wheel consists of two discs 216, 217, Fig. 10, of truncated cone form to provide the grinding surfaces, and the housing 201 has radially disposed channels 226 formed with lugs 227 for guiding the drill.
GB4735070A 1969-10-07 1970-10-06 Expired GB1287832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86444569A 1969-10-07 1969-10-07

Publications (1)

Publication Number Publication Date
GB1287832A true GB1287832A (en) 1972-09-06

Family

ID=25343299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4735070A Expired GB1287832A (en) 1969-10-07 1970-10-06

Country Status (8)

Country Link
AT (1) AT302093B (en)
AU (1) AU2080670A (en)
CH (1) CH514399A (en)
DE (1) DE2042014A1 (en)
ES (1) ES384282A1 (en)
FR (1) FR2065147A5 (en)
GB (1) GB1287832A (en)
NL (1) NL7014652A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134823A (en) * 1982-12-17 1984-08-22 Keith Harris Stand for storing and sharpening chisels and plane irons

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT380419B (en) * 1984-02-14 1986-05-26 Wurscher Raimund August DEVICE FOR GRINDING SPIRAL DRILLS
AT380418B (en) * 1984-02-14 1986-05-26 Wurscher Raimund August DEVICE FOR GRINDING SPIRAL DRILLS
AT401149B (en) * 1990-06-15 1996-06-25 Folke Werner DEVICE FOR GRINDING DRILLS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3597868A (en) * 1968-04-03 1969-10-09 Raimund August Luescher Apparatus for grinding of drills

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134823A (en) * 1982-12-17 1984-08-22 Keith Harris Stand for storing and sharpening chisels and plane irons

Also Published As

Publication number Publication date
AU2080670A (en) 1972-04-13
CH514399A (en) 1971-10-31
NL7014652A (en) 1971-04-13
FR2065147A5 (en) 1971-07-23
DE2042014A1 (en) 1971-04-22
AT302093B (en) 1972-09-25
ES384282A1 (en) 1973-02-16

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years