EP1987916B1 - Machine de meulage et gabarit de meulage correspondant - Google Patents

Machine de meulage et gabarit de meulage correspondant Download PDF

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Publication number
EP1987916B1
EP1987916B1 EP08155316A EP08155316A EP1987916B1 EP 1987916 B1 EP1987916 B1 EP 1987916B1 EP 08155316 A EP08155316 A EP 08155316A EP 08155316 A EP08155316 A EP 08155316A EP 1987916 B1 EP1987916 B1 EP 1987916B1
Authority
EP
European Patent Office
Prior art keywords
grinding
tool
base
jig
clamp
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
EP08155316A
Other languages
German (de)
English (en)
Other versions
EP1987916A1 (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.)
TJ Utveckling AB
Original Assignee
TJ Utveckling AB
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Filing date
Publication date
Application filed by TJ Utveckling AB filed Critical TJ Utveckling AB
Publication of EP1987916A1 publication Critical patent/EP1987916A1/fr
Application granted granted Critical
Publication of EP1987916B1 publication Critical patent/EP1987916B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/066Work 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 machine having a grinding jig to be used at the grinding of a straight edge woodworking tool on the peripheral surface of a rotating grindstone in the grinding machine, which has a cylindrical support bar parallel with the rotation axis of the grindstone, wherein the jig comprises a base, which is parallel with the support bar and is intended for slidable and rotational mounting thereon and has a support surface on the side of the base facing the grindstone and parallel therewith for supporting the tool by its flat machined side or face opposite its bevel, and a clamp, the tool being attached between the base and the clamp.
  • a grinding machine is known, for instance, from US-A-2005/0090184 .
  • this 90° edge angle is normally not imperative. However, if for example 89° is obtained, the same angle will probably not be obtained at the following grinding. The result will be a faceted shape for the edge or that more tool material than otherwise needed will have to be ground away.
  • the problem basically stems from the fact that the position of the tool in the jig and hence in relation to the grindstone is dependent on the manual tightening of two knobs on the jig for obtaining the desired result that the face of the tool becomes exactly parallel with the grinding surface of the grindstone.
  • a secondary problem is to obtain a secure fastening of a tool, even if it has for example a conical shape.
  • a conventional grinding machine 1 is shown in Fig 1 .
  • the machine is provided with a grindstone 2 driven for rotation by an electric motor in the machine.
  • the machine 1 is provided with a cylindrical support bar 3, called a universal support, which is parallel with the rotation axis of the grindstone 2.
  • the position of the universal support can be adjusted to suit different purposes at grinding of different edge tools by the grindstone 2.
  • a grinding jig 4 for a straight edge tool 5 is mounted for lateral and rotational movements on the universal support 3.
  • tools that can be ground or sharpened by the grinding machine 1 and attached in the grinding jig 4 are plane irons, wood chisels and spoke shave blades. With the tool 5 attached in the jig 4 as shown, the tool may be manually brought in engagement with the rotating grindstone 2 and be laterally moved over the grindstone by means of the jig 4, which is slidable on the universal support 3.
  • the jig basically comprises a base 6 and a clamp 7.
  • the base 6 has two legs 6' each provided with a circular hole 6" ( Fig 3 ) for slidable mounting on the universal support 3. On its side opposite the legs 6', the base is provided with two fixed screws 8 (of which only the left one is visible in Fig 2 ). Stops 9 for aligning a tool 5 are arranged on either side of the base 6, leaving room for the clamp 7 between them.
  • the clamp 7 has two holes corresponding to the screws 8. Threaded knobs 10 are attached to the screws 8 above the clamp 7.
  • a tool 5 is placed between the base 6 and the clamp 7 against the stops 9 and can be clamped to a fixed position by means of the screws 8.
  • the tool 5 is placed with its flat machined side, called face, or side opposite the bevel facing the clamp 7 for obtaining the grinding geometry shown in Fig 1 .
  • Fig 4 showing a grinding jig for use in the grinding machine according to the invention.
  • This jig has the same main constituents as the conventional one shown in Fig 2 , namely a base 15 and a clamp 16.
  • the clamp 16 has two fixed screws 17 to extend through corresponding holes in the base 15.
  • a knob 18 is in thread engagement with each screw 17 for determination of the distance between the base 15 and the clamp 16.
  • a compression spring 19 may be arranged around each screw 17 for biasing the base 15 and the clamp 16 apart.
  • the base 15 has two legs 15' each provided with a circular hole 15" ( Fig 5 ) for slidable mounting on the universal support 3.
  • the base On its side facing the universal support 3 the base is provided with a support surface 15A, which preferably is plane. It is parallel with the universal support, i e the two distances D are equal.
  • the tool 5 is to be placed with its face or flat machine side opposite its bevel against this support surface 15A, whereupon it is clamped in position by the movable clamp 16, operated by the knobs 18.
  • the surface 15A is ended by a shoulder 16B in the base 15.
  • This shoulder 16B is perpendicular to the longitudinal direction of the base 15 and thus the universal support 3.
  • the tool 5 will always be guided by the base 15 with its surface 15A and shoulder 15B to be in the correct position for grinding (and thus for obtaining the desired 90° edge angle) irrespective of the position of the clamp 16.
  • This is illustrated in Fig 4 , where the clamp 16 forms an angle ⁇ with the base surface 15B without any negative influence on the correct position of the tool 5.
  • FIG. 1 shows a conventional jig, where the clamping surfaces of the base 6 and the clamp 7 are plane and parallel, which means that the tool 5, if it has a conical shape as shown, is only clamped as indicated by the arrows, resulting in a less stable clamping.
  • the clamping surface of the clamp 16 is longitudinally beveled, which results in a more favourable clamping of a possibly conical tool 5, as indicated by the arrows, with the face of the tool in flat contact with the base surface 15A.
  • FIG 1 A further feature of the grinding machine according to the invention is illustrated in Fig 1 .
  • the grinding jig is freely slidable along the universal support 3. This means that the tool 5 in the grinding jig 4 may leave its grinding engagement with the grindstone 2, possibly resulting in injuries on the operator's fingers.
  • the universal support 3 may be provided with two security stops 20, 21.
  • the stop 20 to the right in Fig 1 is fixed and can have the form of a screw in a threaded axial hole in the end of the universal support 3.
  • the reason for it to be fixed is that the tool 5 has a fixed position against the shoulder 15B to the left in the drawing.
  • the other stop 21 to the left in the drawing is adjustable: its position on the universal support can be adjusted according to the width of the tool 5, so that the tool can not leave its grinding engagement with the grindstone 2.
  • the stop 21 can have the form of a screw operated clamp.

Landscapes

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

Claims (4)

  1. Machine de meulage avec un gabarit de meulage (4) devant être utilisé pour le meulage d'un outil à bois à arêtes droites (5) sur la surface périphérique d'une pierre à aiguiser (2) rotative dans la machine de meulage (1) dont une barre d'appui cylindrique (3) est parallèle à l'axe de rotation de la pierre à aiguiser,
    dans laquelle le gabarit (4) comprend une base (15) qui est parallèle à la barre d'appui (3) et qui est montée de manière à pouvoir coulisser et tourner dessus et
    un collier de serrage (16) de sorte que l'outil (5) puisse être fixé entre la base et le collier de serrage,
    caractérisée par une surface d'appui (15A) sur le côté de la base (15) faisant face à la pierre à aiguiser (2) et parallèle à celle-ci pour l'appui de l'outil (5) par son côté usiné plat ou sa face opposée à son biseau, et en ce qu'une surface de serrage du collier de serrage (16) est biseautée longitudinalement.
  2. Machine de meulage selon la revendication 1, dans laquelle le collier de serrage (16) est disposé entre la base (15) et la barre d'appui (3).
  3. Machine de meulage selon la revendication 1, dans laquelle la base (15) est dotée d'un épaulement (15B) pour que l'outil (5) s'engage sur une extrémité de la surface d'appui (15A), ledit épaulement étant perpendiculaire à la barre d'appui (3).
  4. Machine de meulage selon la revendication 1, dans laquelle une butée de sécurité (20, 21) est prévue sur la barre d'appui (3) cylindrique de chaque côté du gabarit de meulage (4) pour empêcher que l'outil (5) ne quitte latéralement la pierre à aiguiser (2).
EP08155316A 2007-05-04 2008-04-29 Machine de meulage et gabarit de meulage correspondant Active EP1987916B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0701066A SE531802C2 (sv) 2007-05-04 2007-05-04 Slipmaskin och slipjigg därför

Publications (2)

Publication Number Publication Date
EP1987916A1 EP1987916A1 (fr) 2008-11-05
EP1987916B1 true EP1987916B1 (fr) 2011-01-05

Family

ID=39710933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08155316A Active EP1987916B1 (fr) 2007-05-04 2008-04-29 Machine de meulage et gabarit de meulage correspondant

Country Status (5)

Country Link
US (2) US20080274678A1 (fr)
EP (1) EP1987916B1 (fr)
AT (1) ATE494097T1 (fr)
DE (1) DE602008004277D1 (fr)
SE (1) SE531802C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104816246A (zh) * 2015-05-15 2015-08-05 重庆江增船舶重工有限公司 增压器滑动轴承的专用磨床夹具
EP3059048A2 (fr) 2015-02-18 2016-08-24 Tormek AB Gabarit de meule réglable

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5594238B2 (ja) * 2011-06-27 2014-09-24 信越化学工業株式会社 磁石固定治具
USD705029S1 (en) 2011-10-14 2014-05-20 Cequent Consumer Products, Inc. Anchor point clamp
SE537247C2 (sv) 2012-05-03 2015-03-17 Tormek Ab Knivjiggaggregat
US9642778B1 (en) 2014-11-09 2017-05-09 Michael D. Yazbeck Feeding tube holder
US20170173760A1 (en) * 2015-07-23 2017-06-22 Byron Joseph Hourmand Electronic Bevel Jig
SE543585C2 (en) * 2019-04-05 2021-04-06 Tormek Ab An arrangement for grinding edged tools
SE543256C2 (en) 2019-04-05 2020-11-03 Tormek Ab A grinding jig for a blade tool
USD1007269S1 (en) * 2021-01-08 2023-12-12 Tormek Ab Kitchen knife sharpener
USD957487S1 (en) * 2021-07-29 2022-07-12 Shenzhen Jialexin Technology Co., Ltd. Welding jig
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
USD980033S1 (en) * 2022-08-08 2023-03-07 Woodpeckers, Llc Table saw jig

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2257354A (en) * 1940-08-08 1941-09-30 Stresoff Bogola Clamp and bracket structure
US4095376A (en) * 1976-10-29 1978-06-20 Lotane John H Clamping device for use in sharpening shears and the like
US5291690A (en) * 1991-02-08 1994-03-08 Arthur Pike Nipper clamp for precison clamp scissors sharpening system
US5157870A (en) * 1991-02-08 1992-10-27 Pike Arthur E Precision clamp scissors sharpening system
US5938511A (en) * 1997-11-21 1999-08-17 Patterson; James D. Grinding guide assembly
US6676495B1 (en) * 2000-08-30 2004-01-13 Lee Valley Tools Ltd. Power sharpening system
US7033247B2 (en) * 2003-09-08 2006-04-25 Qingdao D&D Electro Mechanical Technologies Co., Ltd. Electric sharpener
US6935937B2 (en) * 2003-12-05 2005-08-30 Kenneth Leslie Port Tool grinding jig
US7281969B2 (en) 2005-05-11 2007-10-16 Donald Naples Tool sharpening and compound honing jig

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059048A2 (fr) 2015-02-18 2016-08-24 Tormek AB Gabarit de meule réglable
EP3059048A3 (fr) * 2015-02-18 2016-10-26 Tormek AB Gabarit de meule réglable
US9789583B2 (en) 2015-02-18 2017-10-17 Tormek Ab Adjustable grinding jig
CN104816246A (zh) * 2015-05-15 2015-08-05 重庆江增船舶重工有限公司 增压器滑动轴承的专用磨床夹具
CN104816246B (zh) * 2015-05-15 2017-03-08 重庆江增船舶重工有限公司 增压器滑动轴承的专用磨床夹具

Also Published As

Publication number Publication date
SE531802C2 (sv) 2009-08-11
US20080274678A1 (en) 2008-11-06
DE602008004277D1 (de) 2011-02-17
EP1987916A1 (fr) 2008-11-05
SE0701066L (sv) 2008-11-05
USD651884S1 (en) 2012-01-10
ATE494097T1 (de) 2011-01-15

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