GB1202600A - Improvements in or relating to devices for grinding drills - Google Patents

Improvements in or relating to devices for grinding drills

Info

Publication number
GB1202600A
GB1202600A GB5116267A GB5116267A GB1202600A GB 1202600 A GB1202600 A GB 1202600A GB 5116267 A GB5116267 A GB 5116267A GB 5116267 A GB5116267 A GB 5116267A GB 1202600 A GB1202600 A GB 1202600A
Authority
GB
United Kingdom
Prior art keywords
drill
grinding
grinding wheel
engaging
guide member
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
GB5116267A
Inventor
Raimund August Wurscher
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.)
Individual
Original Assignee
Individual
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
Priority claimed from SE6261/67A external-priority patent/SE325210B/xx
Application filed by Individual filed Critical Individual
Publication of GB1202600A publication Critical patent/GB1202600A/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
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

1,202,600. Grinding drills. R. A. WURSCHER. 10 Nov., 1967 [10 Nov., 1966; 3 May, 1967], No. 51162/67. Heading B3D. A device for grinding a twist drill 1 comprises a rotatable grinding wheel 5 having a generally frusto-conical grinding surface, a guide member 12 arranged coaxially of the grinding wheel having a plurality of cylindrical bores 14, 15 of different diameters for receiving drills of different diameters, the axes of the bores being parallel with and at a distance from the axis of the grinding wheel and each bore having two guide lugs 17, 18 for engaging the clip channels of the drill, and a stop 16 for engaging at least a portion of the main cutting edge of the drill which does not abut against the grinding wheel when inserted in a corresponding bore. The grinding wheel is clamped by a nut 7 to a hollow shaft 6 mounted for rotation with a shaft 8 driven by an electric motor 3 or portable drill, the shafts being held against rotation relative to one another by a pin and slot connection 10, and a spring 9 presses the shaft 6 so that the grinding wheel is urged towards a drill to be ground. The guide member 12 is secured to a housing 2 for the device and has the plurality of differently sized guide bores 14, 15 on a common pitch circle. The two lugs 17, 18 for engaging the grooves in the drill are so dimensioned as to permit limited rotation of the drill during grinding. The stop 16 is secured by a nut 23 to the guide member and has an inclined helical surface for engaging a cutting lip of the drill while the other lip is being ground.
GB5116267A 1966-11-10 1967-11-10 Improvements in or relating to devices for grinding drills Expired GB1202600A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1537366 1966-11-10
SE6261/67A SE325210B (en) 1967-05-03 1967-05-03

Publications (1)

Publication Number Publication Date
GB1202600A true GB1202600A (en) 1970-08-19

Family

ID=26654693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5116267A Expired GB1202600A (en) 1966-11-10 1967-11-10 Improvements in or relating to devices for grinding drills

Country Status (3)

Country Link
DK (1) DK116344B (en)
FR (1) FR1552062A (en)
GB (1) GB1202600A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742652A (en) * 1970-03-06 1973-07-03 Black & Decker Mfg Co Drill sharpener
GB2134823A (en) * 1982-12-17 1984-08-22 Keith Harris Stand for storing and sharpening chisels and plane irons
US4850150A (en) * 1988-11-16 1989-07-25 Bishop Steven C Hand held drill with integral drill bit sharpener
CN114789367A (en) * 2022-04-13 2022-07-26 浙江嘉宏工具制造有限公司 Positioning method of twist drill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742652A (en) * 1970-03-06 1973-07-03 Black & Decker Mfg Co Drill sharpener
GB2134823A (en) * 1982-12-17 1984-08-22 Keith Harris Stand for storing and sharpening chisels and plane irons
US4850150A (en) * 1988-11-16 1989-07-25 Bishop Steven C Hand held drill with integral drill bit sharpener
CN114789367A (en) * 2022-04-13 2022-07-26 浙江嘉宏工具制造有限公司 Positioning method of twist drill

Also Published As

Publication number Publication date
DK116344B (en) 1969-12-29
FR1552062A (en) 1969-01-03

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE20 Patent expired after termination of 20 years