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WO2008131748A2 - Meuleuse portative - Google Patents

Meuleuse portative Download PDF

Info

Publication number
WO2008131748A2
WO2008131748A2 PCT/DE2008/000724 DE2008000724W WO2008131748A2 WO 2008131748 A2 WO2008131748 A2 WO 2008131748A2 DE 2008000724 W DE2008000724 W DE 2008000724W WO 2008131748 A2 WO2008131748 A2 WO 2008131748A2
Authority
WO
WIPO (PCT)
Prior art keywords
grinding head
stop
hand grinder
grinder according
workpiece
Prior art date
Application number
PCT/DE2008/000724
Other languages
German (de)
English (en)
Other versions
WO2008131748A3 (fr
Inventor
Stephan Rieth
Original Assignee
Stephan Rieth
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 Stephan Rieth filed Critical Stephan Rieth
Priority to US12/451,028 priority Critical patent/US20100120341A1/en
Priority to JP2010504445A priority patent/JP2010524703A/ja
Publication of WO2008131748A2 publication Critical patent/WO2008131748A2/fr
Publication of WO2008131748A3 publication Critical patent/WO2008131748A3/fr

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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface

Definitions

  • the invention relates to a vertical grinding machine with a grinding head which can be attached to a workpiece in a sliding contact area.
  • Such hand grinder machines which allow the machine to be arranged in at least one spatial direction in a manner that is stable against tilting against a workpiece. Described is u.a. a grinding machine with a conical grinding head for grinding edges. The machine can be pressed against a workpiece surface which is adjacent to the edge by means of a ring plate concentrically surrounding the grinding head.
  • the hand grinder allows high removal rates. On the other hand, the degrees of freedom for the grinding head movement are limited.
  • angle grinders are known with unrestricted in its position changeable grinding head.
  • the invention has for its object to provide a new hand grinder, which combines higher flexibility of the grinding head movement with high removal rate and grinding quality.
  • the object-solving hand grinder according to the invention is characterized by a arranged at a distance from the sliding contact area stop which forms an axis of rotation as a pivot axis for the grinding head and as a lever rotation axis with respect to at least one handle when abutting against the workpiece.
  • the angular position of the grinding head with respect to the direction of the pivot axis is largely determined by the stop arranged at a distance from the sliding contact region. Changes in this angular position are possible only within the framework of the grinding head infeed, which is approximately vertical to the workpiece surface. The user of the grinding machine can therefore, without tilting the grinding head in the said one direction, ie with high grinding accuracy, a large grinding pressure force and parallel to the workpiece surface exert a large feed force.
  • two spaced-apart handles for holding and guiding the machine are provided with both hands, wherein, in projection on the workpiece, the grinding head and / or the stop are arranged between the handles or is.
  • the stopper is designed such that the machine can also be pressed against tilting against the workpiece in the direction of the pivot axis.
  • the user can concentrate even more on the exercise of appropriate Schleifandruck- and feed forces.
  • the stop is rounded in a plane perpendicular to the pivot axis cutting plane. He can e.g. be formed by a circular cross-section bolt.
  • the stop comprises an insertable against the workpiece role, wherein a plurality of spaced-apart rollers may be provided.
  • the distance between the rollers is adjustable.
  • the rollers may be lockable on a shaft or rotatable on an axis. Preferably, the rollers can be locked at a desired distance from each other on the shaft.
  • two rollers on opposite sides each have an oblique rolling surface for abutment of the guide stop on workpiece surfaces which are angled at an angle.
  • a guide stop with 45 ° beveled rolling surfaces can be applied, for example, to mutually perpendicular surfaces of a workpiece in order to grind a bevel on the edge formed by the meeting surfaces of 45 °.
  • the rolling surfaces can be chamfered differently, for example by 30 ° and the other by 60 °. Then there is a chamfer angle of 30 °.
  • a grinding head e.g. a belt grinding head
  • it is in the preferred embodiment of the invention is a rotating grinding head, wherein the pivot axis formed by the guide stop extends in a tangential direction to the axis of rotation of the grinding head.
  • the pivot axis formed by the guide stop extends parallel to a ground surface through the grinding head.
  • the guide stop is pivotable against the axis of rotation of the grinding head and can be locked in a desired position.
  • the position can be adjusted according to the inclination on a grinding wheel frontally mounted oblique annular grinding surfaces.
  • the machine comprises an elongate housing surrounding a drive motor for the grinding head, the housing preferably projecting at an angle from a drive shaft for the grinding head.
  • a handle can be arranged through which a lever axis large lever length results, which allows to exert large pressure forces on the workpiece and thus also large grinding pressure forces.
  • the grinding head near the handle extends in its length parallel to the pivot axis.
  • the guide device is part of a grinding unit comprehensive, can be coupled to the housing assembly.
  • the housing of a commercial angle grinder used and the angle grinder be converted to device according to the invention.
  • the grinding head has a flap grinding wheel, in particular with a wire plate underlay, in order to be able to absorb higher pressure forces.
  • a flap grinding wheel in particular with a wire plate underlay, in order to be able to absorb higher pressure forces.
  • such grinding machines for example, by a hexagonal socket, secured against the use of normal grinding heads.
  • FIG. 1 shows a first embodiment of a hand grinder according to the invention in a perspective view, Figure 2, the hand grinder of Fig. 1 in a to the view of Fig. 1 to
  • FIG. 3 shows a detail of the hand grinding machine of FIG. 1
  • FIG. 4 shows a perspective exploded view of the hand grinding machine of FIG. 1, which comprises an assembly which can be coupled to a commercial angle grinder,
  • FIG. 5 is a detail view of the assembly of Figure 4 in a sectional side view
  • Fig. 6 is a partial perspective view of the assembly of Figure 4
  • a hand grinder has an elongate housing 1 with a handle 2 at one end and a handle 3 formed as a bracket at the opposite end.
  • the drive shaft 4 drives a grinding head 5 with a grinding wheel 6.
  • the grinding wheel 6 has, on its side facing a workpiece 7, an annular surface 8 (FIG. 3) inclined to the disk plane, which is in sliding contact with the workpiece 7.
  • the grinding head 5 is part of a separately shown in Fig. 4 illustrated assembly 9, which comprises a cylindrical connector 10 for clamping connection with a lug 1 1 on the housing 1. With the production of the clamping connection, the drive shaft 4 is brought into drive connection with the grinding head 5.
  • the cylindrical connector 10 of the assembly 9 is attached to a U-shaped holding part 12 with U-legs 13 and 14. At the U-legs a U-shaped sheet metal part 15 is hinged via screw. At a distance from the screw connections, in each case a further screw connection is provided, with bolts each passing through a slot 16 in the U leg of the sheet metal part 15.
  • a spark arrester 22 is screwed.
  • the base leg has a preferably covered with Plexiglas opening 17, a rotatably supported by shaft bearings 21 on the U-legs shaft 18 on the two by clamping screws rotatably connected to the shaft rollers 19 and 20 sit ,
  • a rigidly connected to the U-shaped plate member 15 axle bolts could be provided on which the rollers can rotate independently.
  • a rotatable member 26 which can be connected to the grinding wheel 6, of the grinding head 5 is rotatably mounted in a bushing part 28 via a ball bearing 27.
  • the female part 28 is coupled to the connector 10.
  • the drive shaft 4 engages in a bore 29 in the rotary member 26, wherein a coupling 30 produces a drive connection to the rotary member 26.
  • the grinding machine For grinding the flat surface of the workpiece 7, for example for grinding a protruding weld seam 23 (FIG. 2), the grinding machine is pressed by means of both handles 2 and 3 in a sliding contact region 26 and via the rollers 19, 20 to the workpiece 7, wherein in particular by suitable distribution of the load a desired grinding pressure or feed is generated both perpendicular to the workpiece surface and in the longitudinal direction of the weld 23.
  • the axis of rotation of the shaft 18 forms a lever rotation axis for the handles and a pivot axis 27 for the grinding head 5.
  • the distance of the axis to the handle 2 is about 300 mm, the handle 3 about 150 mm.
  • the grinding machine can not tilt in the direction of the axis of rotation of the shaft 18, ie perpendicular to the feed direction.
  • the grinding machine sits on the surface of the workpiece 7 corresponding to a three-point bearing.
  • the guide through the shaft 18 with the rollers 19 and 20 allows the user of the grinder to fully enjoy himself focus on exercising the right pressure and feed forces.
  • the rollers 19 and 20, which are fixed against rotation on the shaft 18, facilitate the straight-line guidance of the grinding machine along the weld seam 23.
  • the exemplary embodiment according to FIGS. 5-7 differs from the preceding exemplary embodiment in that, on a shaft 18a, rollers 19a and 20a, which are seated against rotation relative to one another, have an annular surface 24 or 25 inclined by 45 ° relative to the shaft axis.
  • the hand grinder according to FIGS. 5-7 is therefore attachable to mutually perpendicular surfaces of a workpiece 7a and thus can be used as a bevel grinding machine.
  • the machine can not tilt perpendicular to the chamfer longitudinal direction.
  • the grinding flat chamfers is thereby additionally facilitated.
  • the assembly 9 or 9a of the bevel grinding machine described above can be locked to the rotation axis of the grinding head 5 in desired positions, this position being dependent on the inclination of the annular surface 8 on the grinding wheel 7.
  • the setting is made so that the surface line of the annular surface 8 in the feed direction in each case runs parallel to the workpiece surface.
  • an axis or shaft directly on an edge.
  • the shaft can be profiled so that it does not slip sideways. The roles can be moved in such cases completely outward and arrest there.

Landscapes

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

Abstract

La présente invention concerne une meuleuse portative comprenant une tête de meulage (5) pouvant être mise en place contre une pièce (7) dans une zone de contact de meulage (26). Selon l'invention, à distance de la zone de contact de meulage (26) se trouve une butée (18-21) qui, lors du contact avec la pièce (7), matérialise un axe de rotation (27) qui sert d'axe de pivotement à la tête de meulage (5) et d'axe de rotation de levier vis-à-vis d'au moins une poignée (2, 3).
PCT/DE2008/000724 2007-04-26 2008-04-25 Meuleuse portative WO2008131748A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/451,028 US20100120341A1 (en) 2007-04-26 2008-04-25 Portable grinder
JP2010504445A JP2010524703A (ja) 2007-04-26 2008-04-25 可搬式研削機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007020199A DE102007020199A1 (de) 2007-04-26 2007-04-26 Handschleifmaschine
DE102007020199.2 2007-04-26

Publications (2)

Publication Number Publication Date
WO2008131748A2 true WO2008131748A2 (fr) 2008-11-06
WO2008131748A3 WO2008131748A3 (fr) 2009-01-08

Family

ID=39777551

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000724 WO2008131748A2 (fr) 2007-04-26 2008-04-25 Meuleuse portative

Country Status (4)

Country Link
US (1) US20100120341A1 (fr)
JP (1) JP2010524703A (fr)
DE (1) DE102007020199A1 (fr)
WO (1) WO2008131748A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328594A (zh) * 2019-06-22 2019-10-15 珠海市清新美怡居家居用品有限公司 一种铁质家具加工用除锈装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011103202U1 (de) * 2011-06-29 2011-10-10 Janser Gmbh Handhabungsvorrichtung für ein eigenständiges und separat verwendbares Schleifgerät sowie Schleifvorrichtung
GB201512961D0 (en) * 2015-07-22 2015-09-02 Benoit Hugo Pipe beveling tool
CN105965361A (zh) * 2016-06-27 2016-09-28 镇江耐丝新型材料有限公司 除磷轮轴

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2081360A (en) * 1935-05-09 1937-05-25 Mall Arthur William Rail slotter
DE19733463A1 (de) * 1996-08-07 1998-02-12 Leo Lustig Schleifmaschine
US6358140B1 (en) * 1999-10-29 2002-03-19 Fci Usa Inc. Railroad rail support for a grinder
US6558235B2 (en) * 2001-03-13 2003-05-06 The Boeing Company Ergonomic sander handle apparatus and method
US6935937B2 (en) * 2003-12-05 2005-08-30 Kenneth Leslie Port Tool grinding jig
DE102004040901A1 (de) * 2004-03-31 2005-10-20 Stephan Rieth Schleifkopf für eine Schleifvorrichtung
DE102004040900A1 (de) 2004-03-31 2005-10-20 Stephan Rieth Handschleifvorrichtung
DE102006015275B4 (de) * 2006-04-01 2008-10-16 Metabowerke Gmbh Handwerkzeuggerät zur schleifenden oder schruppenden Nachbearbeitung metallischer Werkstücke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328594A (zh) * 2019-06-22 2019-10-15 珠海市清新美怡居家居用品有限公司 一种铁质家具加工用除锈装置

Also Published As

Publication number Publication date
WO2008131748A3 (fr) 2009-01-08
JP2010524703A (ja) 2010-07-22
US20100120341A1 (en) 2010-05-13
DE102007020199A1 (de) 2008-10-30

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