EP0776731A1 - 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

Info

Publication number: EP0776731A1
Authority: EP; European Patent Office
Prior art keywords: rod; grinding; jig; grindstone; gouge
Prior art date: 1995-11-28
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

EP96850061A

Other languages

German (de)

English (en)

Other versions

EP0776731B1 (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.)

1995-11-28

Filing date

1996-04-17

Publication date

1997-06-04

1996-04-17 Application filed by Tormek AB filed Critical Tormek AB

1997-06-04 Publication of EP0776731A1 publication Critical patent/EP0776731A1/fr

2000-07-12 Application granted granted Critical

2000-07-12 Publication of EP0776731B1 publication Critical patent/EP0776731B1/fr

2016-04-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000227 grinding Methods 0.000 title claims abstract description 21
239000004575 stone Substances 0.000 claims abstract description 3
230000003319 supportive effect Effects 0.000 claims abstract 4
238000009837 dry grinding Methods 0.000 description 1
238000000034 method Methods 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

Images

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.
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)

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 true EP0776731A1 (fr)	1997-06-04
EP0776731B1 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2352663A (en) *	1999-04-06	2001-02-07	Michael Irvine	Jig for use in sharpening cutting tools
EP0957331A3 (fr) *	1998-05-13	2001-04-11	Tormek AB	Capteur d'angles pour des arêtes aigues
EP0958888A3 (fr) *	1998-05-13	2001-12-05	Tormek AB	Montage d'affûtage pour outils tranchants
EP1262281A1 (fr) *	2001-05-30	2002-12-04	Tormek AB	Montage d'affûtage pour outils tranchants
CN104802077A (zh) *	2015-03-01	2015-07-29	侯如升	一种螺旋旋转式摆杆调节机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE0201089L (sv) *	2002-04-11	2003-10-12	Tj Utveckling Ab	Anordning för infästning av skärstål
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

Citations (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
GB2278305A (en) *	1992-12-24	1994-11-30	Donnell Michael O	Grinding rest
GB2278560A (en) *	1993-06-01	1994-12-07	Richard Peter Scott	Grinding jig

1995
- 1995-11-28 SE SE9504246A patent/SE510362C2/sv not_active IP Right Cessation
1996
- 1996-02-23 CA CA002170208A patent/CA2170208A1/fr not_active Abandoned
- 1996-04-15 JP JP8092742A patent/JPH09150352A/ja active Pending
- 1996-04-17 EP EP96850061A patent/EP0776731B1/fr not_active Expired - Lifetime
- 1996-04-17 AT AT96850061T patent/ATE194537T1/de not_active IP Right Cessation
- 1996-04-17 DE DE69609295T patent/DE69609295T2/de not_active Expired - Lifetime

Patent Citations (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
GB2278305A (en) *	1992-12-24	1994-11-30	Donnell Michael O	Grinding rest
GB2278560A (en) *	1993-06-01	1994-12-07	Richard Peter Scott	Grinding jig

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0957331A3 (fr) *	1998-05-13	2001-04-11	Tormek AB	Capteur d'angles pour des arêtes aigues
EP0958888A3 (fr) *	1998-05-13	2001-12-05	Tormek AB	Montage d'affûtage pour outils tranchants
GB2352663A (en) *	1999-04-06	2001-02-07	Michael Irvine	Jig for use in sharpening cutting tools
GB2352663B (en) *	1999-04-06	2003-10-22	Michael Irvine	Jig for use in sharpening cutting implement for use in wood turning
EP1262281A1 (fr) *	2001-05-30	2002-12-04	Tormek AB	Montage d'affûtage pour outils tranchants
CN104802077A (zh) *	2015-03-01	2015-07-29	侯如升	一种螺旋旋转式摆杆调节机构
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

Also Published As

Publication number	Publication date
EP0776731B1 (fr)	2000-07-12
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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