EP0048031A3 - Method and device for sharpening the point of a twist drill - Google Patents

Method and device for sharpening the point of a twist drill Download PDF

Info

Publication number
EP0048031A3
EP0048031A3 EP81107335A EP81107335A EP0048031A3 EP 0048031 A3 EP0048031 A3 EP 0048031A3 EP 81107335 A EP81107335 A EP 81107335A EP 81107335 A EP81107335 A EP 81107335A EP 0048031 A3 EP0048031 A3 EP 0048031A3
Authority
EP
European Patent Office
Prior art keywords
drill
grinding wheel
angle
point
cutting edge
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
EP81107335A
Other languages
German (de)
Other versions
EP0048031A2 (en
EP0048031B1 (en
Inventor
Herbert Diener
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.)
Cessione guehring Automation & Co GmbH
Guehring Automation GmbH
Original Assignee
Gottlieb Guehring KG
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 Gottlieb Guehring KG filed Critical Gottlieb Guehring KG
Priority to AT81107335T priority Critical patent/ATE15002T1/en
Publication of EP0048031A2 publication Critical patent/EP0048031A2/en
Publication of EP0048031A3 publication Critical patent/EP0048031A3/en
Application granted granted Critical
Publication of EP0048031B1 publication Critical patent/EP0048031B1/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

Landscapes

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

Abstract

1. A method of producing a cylinder jacket point ground surface of twist drills, wherein the main cutting edge (6) of the drill (1) is engaged by means of a drill holder (20; 46) at a predetermined point angle (vdelta) with respect to the cutting outer peripheral surface of a grinding wheel (2') being formed with a correspondingly profiled periphery and the cylinder jacket (Z) defining the main rake surface (7a, 7b) of the drill and the rake angle (alpha) thereof is generated by a translatory relative movement (T) caused between the grinding wheel (2') and the drill axis (1a), which movement is substantially parallel to the main cutting edge (6) of the drill, characterized in that the translatory relative movement (T) is affected in a direction forming an adjustably angle of attack (phi) with the radial plane (R) of the grinding wheel (2').
EP81107335A 1980-09-17 1981-09-16 Method and device for sharpening the point of a twist drill Expired EP0048031B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81107335T ATE15002T1 (en) 1980-09-17 1981-09-16 METHOD AND DEVICE FOR CREATING A TWIST DRILL POINT POINT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3035099A DE3035099C2 (en) 1980-09-17 1980-09-17 Method and device for producing a cylindrical material point grind of twist drills
DE3035099 1980-09-17

Publications (3)

Publication Number Publication Date
EP0048031A2 EP0048031A2 (en) 1982-03-24
EP0048031A3 true EP0048031A3 (en) 1982-07-14
EP0048031B1 EP0048031B1 (en) 1985-08-21

Family

ID=6112205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107335A Expired EP0048031B1 (en) 1980-09-17 1981-09-16 Method and device for sharpening the point of a twist drill

Country Status (3)

Country Link
EP (1) EP0048031B1 (en)
AT (1) ATE15002T1 (en)
DE (1) DE3035099C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039649C2 (en) * 1979-04-18 1983-12-08 Karl 7539 Kämpfelbach Reiling Device for grinding the cutting edges of twist drills
JPS61279454A (en) * 1985-06-01 1986-12-10 Toa Kikai Seisakusho:Kk Twist drill grinding machine
JP2537417Y2 (en) * 1990-12-15 1997-06-04 株式会社東亜機械製作所 Thinning combined drill grinder
DE102019214867B4 (en) 2019-09-27 2021-10-28 Kadia Produktion Gmbh + Co. Honing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490884A (en) * 1965-03-17 1970-01-20 Zachry Brierley Method of and machine for grinding twist drill points
DE2523204A1 (en) * 1974-08-23 1976-03-04 Schmalkalden Werkzeug Multiple drill sharpening machine - has set of drills swung by linkage against face of grinding wheel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490884A (en) * 1965-03-17 1970-01-20 Zachry Brierley Method of and machine for grinding twist drill points
DE2523204A1 (en) * 1974-08-23 1976-03-04 Schmalkalden Werkzeug Multiple drill sharpening machine - has set of drills swung by linkage against face of grinding wheel

Also Published As

Publication number Publication date
EP0048031A2 (en) 1982-03-24
EP0048031B1 (en) 1985-08-21
DE3035099A1 (en) 1982-03-25
ATE15002T1 (en) 1985-09-15
DE3035099C2 (en) 1985-11-28

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