EP2006052B1 - Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter - Google Patents

Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter Download PDF

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Publication number
EP2006052B1
EP2006052B1 EP20070110744 EP07110744A EP2006052B1 EP 2006052 B1 EP2006052 B1 EP 2006052B1 EP 20070110744 EP20070110744 EP 20070110744 EP 07110744 A EP07110744 A EP 07110744A EP 2006052 B1 EP2006052 B1 EP 2006052B1
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EP
European Patent Office
Prior art keywords
drill bit
bushing
emery wheel
chuck
grinding machine
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.)
Active
Application number
EP20070110744
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English (en)
French (fr)
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EP2006052A1 (de
Inventor
Ming-Ko Liao
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.)
Taiwan More Cash Village Corp
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Taiwan More Cash Village Corp
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Publication date
Application filed by Taiwan More Cash Village Corp filed Critical Taiwan More Cash Village Corp
Priority to EP20070110744 priority Critical patent/EP2006052B1/de
Publication of EP2006052A1 publication Critical patent/EP2006052A1/de
Application granted granted Critical
Publication of EP2006052B1 publication Critical patent/EP2006052B1/de
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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills
    • 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
    • B24B3/247—Supports for drills

Definitions

  • the present invention relates to emery wheel grinding machine with an adjustable chuck, and more particularly, to an emery wheel grinding machine equipped with an adjustable drill bit chuck suitable for shaving the drill bit or a cutter of a two or more faced and variously lengthed blade of a hobbing cutter other than a single blade one, as per the preamble of claim 1.
  • An example of such a machine is disclosed by US 6 652 367 B.
  • a conventional portable grinding machine as it was disclosed and published by Taiwan Pat. No. 286610 , 155338 , is composed of a housing, a cap covered at one end thereof, a transmission gearing equipped in the housing, a emery wheel and guiding members.
  • the whole unit is set on an electric motor with the grinding machine coupled with the main shaft of the electrical drill so as to impart the rotational power of the electrical drill to the emery wheel with transmission gearing for running.
  • a drill bit or cutter to be shaved is affixed to the machine unit with the guiding members so as to shave and grind the drill bit or cutter blade to a desired extent.
  • the grinding or shaving effect can only reach to the very small part surrounding the central pointed drill head without reaching further to the portion of the blade edge at the recessed clearance, that greatly degrades the effect of finishing drill bit.
  • this newly developed apparatus is essentially composed of an emery wheel 20 driven by a power source associated with a work fixture and a drill bit fixing means 30 for operation.
  • the work fixture is cooperated with a first grinding base 40 for the purpose of affixing the blade of the drill bit in such a manner that its clearance angle is closely fitted to the tilted grinding surface 21 of the emery wheel 20.
  • the work fixture is cooperated with a second grinding base 50 for the purpose of affixing the blade of the drill bit in such a manner that its spiral angle to be closely fitted to the tilted grinding surface 21 of the emery wheel 20.
  • the drill bit fixing means 30 comprises a work fixture fastening base 31 for setting the work fixture, and a drill bit fastening jig 32.
  • the work fixture fastening base 31 is provided with a mounting hole that allows the work fixture to be engaged in, and a rotation limiting post with a prescribed angle provided at the circumference of the mounting hole.
  • the first grinding base 40 is engaged to a machine housing 10 in front of the emery wheel 20 aligned in the same center line, and is kept a distance with the emery wheel 20 equal to that between the work fixture fastening base 31 and the drill bit fastening jig 32.
  • the first grinding base 40 is approximately configured in L shape with an arcuate sliding slot 41 formed at the base surface thereof. By fastening the arcuate sliding slot 41 with a bolt 42, the first grinding base 40 can practically keep a relevant angle with the emery wheel 20 so as to grind and shave a variety of drills such as standard drill, rugged drill, or ebonite drill having the blades of different clearance angles and recesses.
  • the first grinding base 40 has a vertical wall 46 on which being provided with a mounting hole 43 for engaging the work fixture therein, and two rotation limiting posts 44, 45 with a prescribed angle and distance are formed at the circumference of the mounting hole 43.
  • the mounting hole 43 is upwardly inclined with an angle about 10 ⁇ 25° in order to fit the direction of the blade of the drill bit to be shaved.
  • the second grinding base 50 is engaged to the machine housing 10 with a bolt 51 above the emery wheel 20 keeping a distance with the latter equal to that between the work fixture fastening base 31 and the drill bit fastening jig 32.
  • the second grinding base 50 has a mounting hole 52 for engaging the work fixture therein and a rotation limiting post 53 with a prescribed angle standing on the circumference of the mounting hole 52.
  • the present invention is to provide an emery wheel grinding machine, as per claim 1, with adjustable bit chuck which has a tilted T-bushing, and its outer flange is provided with several stop traps with the number corresponding to that of the blades of a hobbing cutter to be shaved. On the outer flange of the T-bushing is also provided with two stop pins for defining the turning angle of the head of the hobbing cutter.
  • the tilted T-bushing of the present invention is not only able to adjust the chuck angle according to the figure and number of blades of the hobbing cutter, but also can control the turning angle of the hobbing cutter with the stop pins so that the clearance angles and the recesses between the blades can be effectively shaved.
  • the adjustable drill bit chuck of the present invention which accommodate a grinder 100, is provided with a first drill chuck 100A and a second drill chuck 100B.
  • the former has a containment hole 101
  • the latter has a T-bushing 200 with a containment hole 102 respectively.
  • One end 201 of the T-bushing 200 can be inserted into the containment hole 101, while the other end has a larger outer diameter such that an outer flange 202 is emerged out of the containment hole 101 after insertion.
  • Two, three, or four pairs of stop traps 203 are provided along the circumference of the outer flange 202 according to the number of blades of the drill or hobbing cutter to be shaved.
  • the stop traps 203 can be engaged with corresponding clamp studs 103 which are provided on the outer surface of the drill chuck so as to hold the T-bushing 200 in place in the containment hole 101 of the drill chuck.
  • the T-bushing 200 has a tapered hole 204 in it with a taper angle such that the blade of the drill or hobbing cutter can keep a prescribed inclination angle with the emery wheel when the drill or cutter head is inserted into the tapered hole 204.
  • the adjustable drill chuck is provided with two pairs of stop pins 301, 302 along the outer flange 202 of the T-bushing 200 so as to control the turning angle of the drill bit chuck.
  • the confinement grooves 401, 402 and the stop pins 301, 302 cooperate to control the turning angle of the chuck head 400 by their mutual positional relation thereby defining the length of the cutter blade to be shaved.
  • the T-bushing 200 of the adjustable chuck is not only for holding a hobbing cutter 500 to be shaved by exposing a blade length 501, but also can serve in the second drill chuck 100B to finish the clearance angles 502 or recesses 503 of the cutter blades.
  • a tilted T type emery wheel 600 is used in the present invention, it is provided an outer ring 601 with larger diameter than that of the main wheel 600 at one side thereof, the grinding surface of the outer ring 601 is covered with a preferably thick emery compounds.
  • the chuck head 400 holding the hobbing cutter 500 at the chuck side is inserted into the tapered hole 204 in the T-bushing 200 so as to bring the hobbing cutter 500 in contact with the main body of the emery wheel 600 with a tilted angle ⁇ .
  • the hobbing cutter 500 can be settled to shave its blade.
  • the hobbing cutter 500 is in contact with the main body of the emery wheel 600 with a tilted angle ⁇ , the tilted blade can be easily shaved.
  • the blades 504, 505 with different length can be effectively shaved by turning the chuck head from 0° to 180°.
  • a clearance angle ⁇ 1 of the hobbing cutter 500 is to be shaved, at first the T-bushing 200 is inserted into the Y direction containment hole 101 of the second bit chuck 100B, and then by inserting the chuck head 400 which holds the hobbing cutter 500 into the tapered hole 204 of the T-bushing 200 such that the hobbing cutter 500 is in contact with the outer ring 601 of the emery wheel 600 with a tilted angle ⁇ thereby making the cutter 500 to incline a certain angle against the edge 602 of the outer ring 601.
  • the clearance angle of the blade of the cutter 500 can be easily shaved.
  • the present invention can be applied to shave and finish the hobbing cutter 500 with two, three or even four blades conveniently and easily only by turning the T-bushing 200.

Landscapes

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

Claims (4)

  1. Schmirgelscheibenschleifmaschine (100) mit verstellbarem Bohrfutter (100A), aufweisend:
    eine Schmirgelscheibe (600) zum Schleifen und Schaben eines Bohrers;
    eine Hülse (200) im besagten Futter (100A) zum Einsetzen des Kopfs des besagten Bohrers;
    wobei die besagte Hülse (200) eine T-förmige Hülse ist, die einen Außenflansch (202) aufweist, wobei ein Ende desselben in ein Begrenzungsloch (101) eingesetzt werden kann, und sich das andere Ende, das den Außenflansch (202) aufweist, aus dem besagten Begrenzungsloch (101) erstreckt, dadurch gekennzeichnet dass das besagte Bohrfutter (100A) eine Vielzahl von Klemmzapfen (103) aufweist und dass der besagte Außenflansch (202) mit mehreren Paaren von Rastfallen (203) entlang seines Umfangs bereitgestellt wird und mit den besagten korrespondierenden Klemmzapfen (103), die auf einer Außenfläche des besagten Bohrfutters (100A) bereitgestellt werden, in Eingriff gebracht werden kann, und dass die besagte T-Hülse ein kegelförmiges Loch (204) in sich aufweist.
  2. Schleifmaschine nach Anspruch 1, wobei die Oberfläche des besagten Außenflanschs (202) der besagten T-Hülse mit zwei Paaren von Anschlagstiften (301, 302) zum Steuern des Drehwinkels des besagten Bohrfutters (100A) bereitgestellt wird.
  3. Schleifmaschine nach Anspruch 1, wobei die Zahl der besagten Rastfallen (203), die entlang des Umfangs des besagten Außenflanschs (202) der besagten T-Hülse bereitgestellt werden, gemäß der Zahl der zu schabenden Schneidblätter bestimmt ist.
  4. Schleifmaschine nach Anspruch 1, wobei die Schleifscheibe, die in der besagten Schleifmaschine verwendet wird, eine Schmirgelscheibe (600) ist, die mit einem Außenring mit einem größeren Durchmesser als demjenigen der Hauptscheibe bereitgestellt wird.
EP20070110744 2007-06-21 2007-06-21 Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter Active EP2006052B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070110744 EP2006052B1 (de) 2007-06-21 2007-06-21 Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070110744 EP2006052B1 (de) 2007-06-21 2007-06-21 Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter

Publications (2)

Publication Number Publication Date
EP2006052A1 EP2006052A1 (de) 2008-12-24
EP2006052B1 true EP2006052B1 (de) 2014-04-16

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ID=38626306

Family Applications (1)

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EP20070110744 Active EP2006052B1 (de) 2007-06-21 2007-06-21 Schmirgelscheibenschleifmaschine mit verstellbarem Bohrfutter

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EP (1) EP2006052B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110802447A (zh) * 2018-08-06 2020-02-18 洪逸博 能任意调整二斜面或三斜面钻头静点大小的钻头磨刃机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1396809B1 (it) * 2009-05-15 2012-12-14 Re Ma Sas Di Pressato Emanuele & C Macchina affilatrice portatile per affilare punte da legno
ITUD20110078A1 (it) 2011-06-03 2012-12-04 Nordutensili S R L "macchina affilatrice automatica per frese a candela da legno, programmabile con lettura ottica delle caratteristiche geometriche ed affilatura computerizzata".
CN105415176B (zh) * 2014-09-12 2017-12-22 深圳盟星科技股份有限公司 一种万向夹头

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020523A (fr) * 1950-06-19 1953-02-06 Gabarit porte-outil pour affûter les mèches hélicoïdales sur tous types de tourets à meuler
US2958167A (en) * 1958-05-09 1960-11-01 Seth Silverman Grinder fixture
US3039244A (en) * 1961-03-06 1962-06-19 Wynn S Vickerman Tool grinding fixture
TW538849U (en) * 2002-05-21 2003-06-21 Jen-Fu Lin Grinding device for drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110802447A (zh) * 2018-08-06 2020-02-18 洪逸博 能任意调整二斜面或三斜面钻头静点大小的钻头磨刃机

Also Published As

Publication number Publication date
EP2006052A1 (de) 2008-12-24

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