EP0776731B1 - Un montage de meulage pour meuler des ciseaux en forme de gouge - Google Patents

Un montage de meulage pour meuler des ciseaux en forme de gouge Download PDF

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Publication number
EP0776731B1
EP0776731B1 EP96850061A EP96850061A EP0776731B1 EP 0776731 B1 EP0776731 B1 EP 0776731B1 EP 96850061 A EP96850061 A EP 96850061A EP 96850061 A EP96850061 A EP 96850061A EP 0776731 B1 EP0776731 B1 EP 0776731B1
Authority
EP
European Patent Office
Prior art keywords
rod
grinding
jig
grindstone
gouge
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 - Lifetime
Application number
EP96850061A
Other languages
German (de)
English (en)
Other versions
EP0776731A1 (fr
Inventor
Torgny Jansson
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.)
Tormek AB
Original Assignee
Tormek AB
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 Tormek AB filed Critical Tormek AB
Publication of EP0776731A1 publication Critical patent/EP0776731A1/fr
Application granted granted Critical
Publication of EP0776731B1 publication Critical patent/EP0776731B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a grinding jig for grinding gouge chisels and being of the kind defined in the preamble of Claim 1.
  • a grinding jig for grinding gouge chisels and being of the kind defined in the preamble of Claim 1.
  • Such a jig is known, for example, from US-A-2 107 921.
  • Finger-shaped turning gouges, firming gouges, scribing gouges, etc., are very difficult to grind.
  • the gouges are normally ground straight when received from the supplier, and are therefore often unsuitable for the purpose intended, necessitating the user to re-grind the gouges.
  • the gouges are often ground in freehand, using a high-speed grinding wheel (dry grinding) or a grinding stone in water.
  • a high-speed grinding wheel dry grinding
  • a grinding stone in water.
  • uniform grinding of the gouges is achieved with the aid of a hand-held device, in which the gouge is clamped supported solely by one leg against the floor in front of the grindstone. It is quite impossible to finger-grind a gouge precisely and symmetrically with the aid of this tool.
  • An object of the present invention is to solve the problem of grinding gouges, and then particularly so-called finger-shaped turning gouges, and also to enable the bevelled surface that defines the cutting edge of the gouge a straight or a convex configuration in addition to the concave configuration afforded by the radius of the grindstone.
  • Figs. 1a-c show the tip of a gouge respectively in side view, in longitudinal sectional view, and from above, and illustrate the gouge tip in the state in which it leaves the supplier, normally ground straight;
  • Figs. 2a-c illustrate the tip of a gouge that has been finger-ground in accordance with the invention, respectively from one side of the tip, in part-section and from above;
  • Fig. 3 is a view of the gouge profile;
  • Fig. 4 illustrates a grinding jig constructed in accordance with the invention; and
  • Fig. 5 is a front view of the jig shown in Fig. 4.
  • Figs. 1a-c illustrate the tip of a gouge, or turning gouge 1, in the same state as that in which it is normally delivered by the supplier.
  • the illustrated gouge has obliquely ground surfaces 2 which define the cutting angle ⁇ of the gouge, and two surfaces 3 ground on the sides of the gouge and forming its so-called side bevels.
  • One such finger configuration is shown in Fig. 2.
  • the gouge is ground by rotating the gouge during the grinding process so that both obliquely ground surfaces 2 defining the gouge cutting angle, and the side bevels are produced continuously.
  • the invention enables a gouge to be ground in this way in a simple manner and with great precision.
  • Figs. 4 and 5 illustrate an inventive grinding jig for grinding a gouge 1 to a finger configuration.
  • Fig. 4 shows part of a grindstone 4 and a raisable and lowerable universal support 5 located adjacent the grindstone mounting.
  • the universal support includes a part 6 which extends parallel with the grindstone axle in a known manner.
  • a sleeve 8 which includes a journal bearing 7 is pivotally and displaceably carried by the part 6 of the universal support that extends parallel with the grindstone axle.
  • the journal bearing 7 is placed beneath the sleeve 8 at a distance a therefrom, so that the gouge 1 can be twisted and therewith ground at an angle of at least 180°.
  • the sleeve 8 has mounted therein a rod 9 which can be moved in the longitudinal direction of the sleeve and which projects out from the sleeve 8 at both ends thereof.
  • a so-called locking stirrup 10 is pivotally and lockably mounted at the end of the rod 9 that lies proximal to the grindstone.
  • the locking stirrup 10 can thus be swung relative to the longitudinal axis 11 of the rod 9 and locked in different angular positions ⁇ in relation to the longitudinal axis 12 of the gouge 1, said gouge being firmly locked in the locking stirrup 10 by means of a screw 13.
  • the screw 13 is provided with a knob 14 and the tip of the screw functions to press the tool lockingly against a V-block 15 of the locking stirrup 10, in a positive manner.
  • the end of the rod 9 that lies distal from the grindstone 4 is provided with a stop ring 16 which can be moved axially along said rod end.
  • the rod 9 also includes an axially delimited groove 17 into which the end of a screw 18 screwed into the stop ring 16 extends.
  • the screw 18 is conveniently integral with a knob 19, and functions to enable the locking ring 16 to be locked in different positions along the rod 9.
  • the cutting angle ⁇ is determined by the extent to which the gouge projects from the locking stirrup and by the distance of the part 6 of said universal support 5 from the grindstone.
  • a side bevel corresponding to the side bevel shown in Figs. 2a-c is obtained by twisting the locking stirrup and tool 1 around the longitudinal axis of the rod 9.
  • the configuration of the side bevel - finger ground - i.e., its length d is determined by the angle ⁇ between the tool and the longitudinal axis 11.
  • a suitable angle ⁇ is 20°, wherein the jig may be graduated or likewise marked for larger and smaller angles around this value, as indicated at 19 in Figs. 4 and 5.
  • a smaller angle will result in a shorter side bevel, whereas a larger angle will result in a longer side bevel.
  • the side bevel will be concave in shape and will have a radius corresponding to the radius of the grindstone.
  • the inventive jig can be reset quickly to obtain a straight or a convex side bevel.
  • a convex side bevel may be desired, for instance, by lathe operators in respect of certain lathe-cutting work.
  • Resetting of the jig is effected by first grinding the gouge with the stop ring 16 locked in a position nearest the sleeve 8. By then moving the stop ring away from the sleeve 8, e.g. through a distance of 10-15 mm, the locking stirrup 10, with the gouge 1, can be moved in a direction towards the grindstone and the heel 21 of the cutting edge (see Fig. 2) will be ground so as to obtain the desired convex side bevel.
  • the front edge of the cutting edge can be ground at the same time without changing the jig setting, by allowing the jig to move away from the grindstone, which takes place automatically by virtue of rotation of the grindstone.
  • the locking stirrup 10 is locked to the rod 9 by means of a Philip's screw and nut, although it will be understood that other fastener means may be used, for instance a knob-carrying screw.
  • the rod 9 be smooth as in the case of the Figs. 4 and 5 embodiment, but may be provided with screw threads which mesh with screw threads in the bearing sleeve 8 for axial movement of the rod 9 in said sleeve, and the stop 16 may be a knob screwed onto the rod 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (6)

  1. Montage de meulage pour meuler des gouges (1) à l'aide d'une meule (4) ou similaire et comportant un support (5) qui peut être fixé en position par rapport à la meule et qui comporte une partie de support (6) qui s'étend généralement parallèlement à l'axe de la meule, caractérisé en ce que le montage comporte un manchon de palier (8) qui est monté sur la partie de support (6) en vue d'un mouvement de pivotement dans un plan généralement perpendiculaire à l'axe de la meule et qui reçoit une tige (9) rotative autour de son axe et qui est déplaçable dans le plan de pivotement du manchon de palier (8) et en ce que la tige (9) porte sur son extrêmité libre proche de la meule (4), une bride pivotante de verrouillage (10) qui peut être verrouillée dans différentes positions angulaires par rapport à l'axe de la tige et dans laquelle la gouge (1) est verrouillée fermement sur le montage.
  2. Montage selon la revendication 1, caractérisé en ce que l'autre extrémité libre de la tige (9), éloignée de la bride de verrouillage (10) porte des moyens d'arrêt (16) qui peuvent être déplacés le long de la tige.
  3. Montage selon la revendication 2, caractérisé en ce que les moyens d'arrêt présentent la forme d'une bague de butée (16) qui peut être verrouillée dans des positions sélectionnées le long de la tige (9).
  4. Montage selon les revendications 2 ou 3, caractérisé en ce que la tige (9) est filetée et vissée dans le manchon de palier (8) pour le mouvement de la tige dans ce dernier et en ce que les moyens d'arrêt (16) présentent la forme d'une butée en forme de bouton vissé sur la tige (9).
  5. Montage selon les revendications 1, 2, 3 ou 4, caractérisé en ce que la tige (9) et la bride de verrouillage (10) sont munies de graduations mutuellement coopérantes (19) afin de permettre une lecture de l'angle (α) entre la tige (9) et la bride de verrouillage (10).
  6. Montage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extrémité de la tige (9) qui est située à distance de la bride de verrouillage (10) est graduée (20) de manière à pouvoir déterminer la position de la tige (9) dans le manchon de palier (8).
EP96850061A 1995-11-28 1996-04-17 Un montage de meulage pour meuler des ciseaux en forme de gouge Expired - Lifetime EP0776731B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9504246 1995-11-28
SE9504246A SE510362C2 (sv) 1995-11-28 1995-11-28 Slipjigg för slipning av skölpjärn

Publications (2)

Publication Number Publication Date
EP0776731A1 EP0776731A1 (fr) 1997-06-04
EP0776731B1 true EP0776731B1 (fr) 2000-07-12

Family

ID=20400385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96850061A Expired - Lifetime EP0776731B1 (fr) 1995-11-28 1996-04-17 Un montage de meulage pour meuler des ciseaux en forme de gouge

Country Status (6)

Country Link
EP (1) EP0776731B1 (fr)
JP (1) JPH09150352A (fr)
AT (1) ATE194537T1 (fr)
CA (1) CA2170208A1 (fr)
DE (1) DE69609295T2 (fr)
SE (1) SE510362C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515580C2 (sv) * 1998-05-13 2001-09-03 Tormek Ab Jigg för slipning av verktyg
SE510945C2 (sv) * 1998-05-13 1999-07-12 Tormek Ab Vinkelmätare vid slipning av eggverktyg
AUPP959399A0 (en) * 1999-04-06 1999-04-29 Crawford, John Arthur Jig for use in sharpening cutting implement for use in woodturning
SE519080C2 (sv) * 2001-05-30 2003-01-07 Tormek Ab Slipjigg
SE0201089L (sv) * 2002-04-11 2003-10-12 Tj Utveckling Ab Anordning för infästning av skärstål
CN104802077B (zh) * 2015-03-01 2017-06-20 东莞市显科模具五金有限公司 一种螺旋旋转式摆杆调节机构
SE2250303A1 (en) * 2022-03-07 2023-03-07 Tormek Ab A grinding angle setting device, a grinding system and a method of setting a grinding angle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2107921A (en) * 1936-11-11 1938-02-08 Walter A Weed Grinding device
GB9227008D0 (en) * 1992-12-24 1993-02-17 Donnell Michael O Grinding jig
GB2278560A (en) * 1993-06-01 1994-12-07 Richard Peter Scott Grinding jig

Also Published As

Publication number Publication date
EP0776731A1 (fr) 1997-06-04
ATE194537T1 (de) 2000-07-15
SE9504246L (sv) 1997-05-29
DE69609295D1 (de) 2000-08-17
JPH09150352A (ja) 1997-06-10
SE510362C2 (sv) 1999-05-17
DE69609295T2 (de) 2000-12-21
CA2170208A1 (fr) 1997-05-29
SE9504246D0 (sv) 1995-11-28

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