WO2010142582A1 - Scie à chantourner munie d'une table de travail réglable - Google Patents

Scie à chantourner munie d'une table de travail réglable Download PDF

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Publication number
WO2010142582A1
WO2010142582A1 PCT/EP2010/057672 EP2010057672W WO2010142582A1 WO 2010142582 A1 WO2010142582 A1 WO 2010142582A1 EP 2010057672 W EP2010057672 W EP 2010057672W WO 2010142582 A1 WO2010142582 A1 WO 2010142582A1
Authority
WO
WIPO (PCT)
Prior art keywords
work table
scroll saw
support structure
lever
scroll
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.)
Ceased
Application number
PCT/EP2010/057672
Other languages
German (de)
English (en)
Inventor
Helmut Scholz
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.)
PROXXON SA
Original Assignee
PROXXON SA
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 PROXXON SA filed Critical PROXXON SA
Publication of WO2010142582A1 publication Critical patent/WO2010142582A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
    • B23D49/007—Jig saws, i.e. machine saws with a vertically reciprocating narrow saw blade chucked at both ends for contour cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/02—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames

Definitions

  • the present invention generally relates to a scroll saw, especially a scroll saw with adjustable work table.
  • scroll saw generally refers to the motorized version of the fret saw.
  • ⁇ br /> ⁇ br /> Scroll scroll saws are used in particular for precise curve and internal cuts, comprising a base housing that can be set up on a workbench and serves, among other things, as a supporting structure for a work table
  • Base frame mounted saw arm extends over the work table and carries an upper chuck for the saw blade
  • a lower chuck blade is mounted vertically below the upper saw blade chuck unit
  • the jigsaw blade is clamped and extended between the lower and upper chuck
  • the lower clamping device has an electric drive mechanism which, during operation of the saw, causes an alternating lifting movement of the saw blade
  • Clamping device here is a passive Hubteil integrated, which exerts a corresponding counterforce on the saw blade so that it is always subject to the right voltage.
  • Such a scroll saw is sold, for example, by the applicant under the name "MINIMOT TM scroll saw DS 220 / E".
  • the saw blade is clamped between two substantially parallel pivot arms, wherein the pivot arms are each pivotally mounted about a horizontal axis.
  • the pivot arms are connected to a drive to produce the strokes of the saw blade.
  • the workpiece to be sawn is placed on the worktable of the scroll saw and pressed lightly against the fretsaw blade by hand. It can be done by hand freely on the work table, so that even complicated curved cuts can be executed precisely.
  • the scroll saw can include a height-adjustable guide shoe that holds the saw blade on the workpiece surrounds. It is also known to install a blowing device in the scroll saw, and bring the blown air via flexible air ducts to the interface to blow away the sawdust and thus to ensure a clear view of the cutting line. In various sawing work, frequent loosening and clamping of the saw blade are required.
  • the saw blade when making internal cuts in a workpiece, the saw blade must first be passed through a prepared opening before the saw blade can be secured between the upper and lower jigs.
  • Various devices are known for clamping the saw blade, which are relatively quick and easy Allow loosening and clamping of the saw blade.
  • Such a quick-release device is known for example from utility model DE 20 2004 003 854 111.
  • the known quick release devices have indisputably contributed to simplify the loosening and clamping of the saw blade. Nevertheless, in particular the clamping remains a tricky matter.
  • An object of the present invention is to simplify the clamping of the saw blade. This object is achieved by a scroll saw according to claim 1.
  • a scroll saw usually includes a support structure for setting up the scroll saw on a base (such as a workbench), a supported by the support structure work table for supporting a workpiece to be sawn, extending in a longitudinal direction of the scroll saw above the work table upper arm, as well as a first jig attached to the upper arm for clamping a saw blade above the work table and a second clamping device for clamping the saw blade below the work table.
  • a straight line hereinafter referred to as a connecting line
  • the work table is slidably mounted on the support structure in the longitudinal direction of the scroll saw, and the opening for passing the saw blade comprises a longitudinal slot extending in the longitudinal direction of the scroll saw to an edge of the work table.
  • the worktable is slidable to a position (hereinafter referred to as maintenance position for the sake of simplicity) in which the connection line between the first and second jigs is spatially adjacent to the worktable.
  • the scroll saw according to the invention simplifies the clamping of the saw blade in that the first and second clamping device are more accessible and, secondly, both are simultaneously in the field of vision of the user when the work table is moved to the maintenance position. Not negligible is also the advantage that the threading of the saw blade through the opening is eliminated.
  • the scroll saw comprises a guide shaft extending in the longitudinal direction of the scroll saw, to which the work table is slidably mounted with respect to the support structure.
  • the shaft can be fastened to the support structure and the work table can be displaced as a slide on this shaft.
  • the guide shaft is fixed to the work table, and the support structure has at least one sliding bearing on which the guide shaft can slide in the longitudinal direction of the scroll saw. In the maintenance position of the work table is preferably located on a stop on the support structure.
  • the connecting line between the first and the second clamping device extends through the opening in the work table (ie not on the work table over).
  • the connecting line between the first and the second clamping device extends through the opening in the work table (ie not on the work table over).
  • the scroll saw comprises a tilting device for tilting the work table to a running in the longitudinal direction of the scroll saw axis of rotation.
  • the tilting device allows to adjust the angle of inclination of the work table and gives the user the opportunity to make oblique cuts.
  • the scroll saw has a blocking device, which allows the tilting of the work table only in the working position.
  • a blocking device could comprise a first blocking element on the support structure and a second blocking element on the work table, which are arranged so that they engage with each other when the work table is moved from the working position in the direction of the maintenance position. Once the blocking elements are engaged with each other, the worktable can no longer be tilted.
  • the blocking elements also prevent a displacement of the work table from the working position if the work table is not aligned horizontally.
  • the opening for the passage of the saw blade has a subsequent to the longitudinal slot transverse slot, so that the work table can be tilted in the working position, without the saw blade comes into contact with it.
  • the tilting device preferably comprises a hinge, via which the support structure and the work table are rotatably coupled to each other about the rotation axis.
  • a circular arc portion with a toothing which lies in a plane perpendicular to the axis of rotation and is centered on the intersection of this plane and the axis of rotation.
  • a lever with a latch element is provided on the support structure, which lever is mounted rotatably on the support structure about a lever axis parallel to the rotation axis, such that it assumes a first and a second angular position can, wherein the pawl member is in the first angular position of the lever with the toothing of the circular arc portion is engaged and spaced in the second angular position of the toothing of the circular arc portion.
  • the pawl member has an adjusting device by which a linear position of the pawl member on the lever in the first angular position is substantially tangential to the circular arc portion adjustable.
  • This embodiment of the tilting device enables a rapid coarse adjustment of the angle of inclination in that the pawl element is brought into engagement with the toothing on the circular arc section.
  • the fine adjustment of the inclination angle is done via the adjusting device.
  • the adjusting device is such that the position of the pawl member is at least a distance changed, which corresponds to the pitch (arc length of the pitch circle between two adjacent, equilateral tooth flanks) of the teeth.
  • the lever on which the pawl element is arranged is preferably biased by a spring element in the first angular position.
  • the lever may further comprise a locking element, by means of which the work table in the
  • the locking element has a beveled end face on which the circular arc portion when moving the
  • Working table comes into working position into rest, whereby the lever is pressed in the second angular position.
  • the lever may also have an actuating arm with which the user can bring the lever in the second angular position to make the rough adjustment.
  • Worktable in the desired angle of inclination is preferably one
  • Locking screw provided for locking the lever in the first angular position.
  • FIG. 1 shows a perspective view of a scroll saw according to the invention, the work table being in the working position;
  • FIG. 2 is a perspective view of the scroll saw of FIG. 1 with the work table in the service position;
  • FIG. 1 shows a perspective view of a scroll saw according to the invention, the work table being in the working position;
  • FIG. 2 is a perspective view of the scroll saw of FIG. 1 with the work table in the service position;
  • FIG. 1 shows a perspective view of a scroll saw according to the invention, the work table being in the working position;
  • FIG. 2 is a perspective view of the scroll saw of FIG. 1 with the work table in the service position;
  • FIG. 3 is another perspective view of the scroll saw of FIG. 1 with the worktable in the service position;
  • FIG. 4 is a perspective view of the scroll saw of FIG. 1; FIG. wherein the work table is tilted;
  • Fig. 5 is a perspective detail view of the blocking elements, which prevent a displacement of the work table when it is tilted;
  • FIG. 6 shows a further perspective detail view of the blocking elements from FIG. 5 with the work table tilted
  • FIG. 7 shows a further perspective detailed view of the blocking elements from FIG. 5 when the work table has been moved out of the working position
  • Fig. 8 is a detail view of the tilting device of the scroll saw.
  • the scroll saw 10 shown in FIGS. 1 to 4 comprises a support structure 12 with which the scroll saw 10 can be mounted, e.g. can be placed on a workbench.
  • the support structure 12 comprises a base plate 14 supporting the motor 16 of the scroll saw, and a support structure 18 to which the work table 20 and upper and lower swing arms 22, 24 are mounted.
  • the pivot arms 22, 24 extend parallel to each other in the longitudinal direction of the scroll saw above and below the work table 20 and each have at one end a clamping device 26, 28 for the saw blade 30.
  • the pivot arms 22, 24 are each pivotally mounted about a horizontal axis and coupled to each other so that they remain parallel to each other in their pivoting movement and move the saw blade 30 substantially along a line alternately upwards and downwards.
  • the pivot arms 22, 24 are driven in a manner known per se by the motor 16.
  • the work table 20 has between the first and the second
  • the work table 20 is in the longitudinal direction of the scroll saw 10th slidably mounted and tilted transversely to the longitudinal direction on the support structure 12.
  • the opening 32 for the passage of the saw blade 30 comprises, on the one hand, a longitudinal slot 36 extending in the longitudinal direction as far as the front edge 34 of the work table 20 and, on the other hand, a transverse slot 38 adjoining it.
  • the work table 20 can be moved between a working position (FIG ) and a maintenance position (FIGS. 2 and 3). In the working position, the connecting line between the first and second jigs 26, 28 passes through the opening 32 in the work table 20.
  • the geometric intersection of the connecting line with the plane defined by the work table 20 lies within the working surface bounded by the work table 20.
  • the line connecting the first and second jigs passes the work table 20.
  • the point of intersection of the connecting line with the plane defined by the work table 20 lies outside the working surface delimited by the work table 20, more precisely, in the imaginary extension of the longitudinal slit 36 beyond the front edge 34 of the work table 20.
  • a rotary thrust joint is present, which allows moving and tilting of the work table 20.
  • On the underside of the work table 20 is fixed as a guide shaft extending in the longitudinal direction of a circular cylindrical rod 40 which is supported by plain bearings 42 on the support structure 12.
  • the plain bearings 42 allow both an axial and a rotational movement.
  • blocking elements prevent the worktable 20 from being tilted when not in the working position.
  • the plain bearings 42 can also serve as stop elements which prevent axial movement beyond the working or maintenance position.
  • the axis of rotation of the tilting device extends horizontally under the work table at a certain distance from the working surface and parallel to the vertical plane, which is spanned by the saw blade and the pivoting arms. Because in this configuration the intersection of the line between the jigs 26, 28 and shifts the work surface, when the work table 20 is tilted, the transverse slot 38 is necessary to avoid that the saw blade 30 and / or the work table 20 is damaged when tilted.
  • the transverse slot can be shorter or optionally omitted (if the longitudinal slot is wide enough).
  • a first blocking element in the form of a rail 44
  • a second blocking element in the form of a C-shaped profile piece 46
  • the two blocking elements are arranged so that they engage with each other when the work table 20 is moved from the working position in the direction of the maintenance position.
  • the work table 20 is in the working position and is aligned horizontally.
  • the blocking elements are not in engagement with each other, so that the work table 20 can be inclined relative to the horizontal plane.
  • the work table 20 is tilted in the working position by a certain angle.
  • Figure 7 shows how the blocking elements cooperate when the work table is displaced in the longitudinal direction.
  • the C-shaped profile piece 46 engages a corresponding flange of the rail 44th
  • the work table 20 has a shaped part 48 with a toothed circular arc section 50, which lies in a plane perpendicular to the axis of rotation and is centered on the intersection of this plane and the axis of rotation.
  • a lever 52 with a pawl element 54 is rotatably mounted on the support structure 12 about a lever axis parallel to the axis of rotation, so that the lever 52 can assume a first and a second angular position. In the first angular position of the lever 52, the pawl member 54 engages the toothing of the circular arc portion (FIG.
  • the pawl member 54 includes an adjustment screw 56 and a pulley 58, whose position on the lever 52 in the tangential direction to the circular arc portion 50 with the adjusting screw 56 is adjustable.
  • the pawl member 54 includes an adjustment screw 56 and a pulley 58, whose position on the lever 52 in the tangential direction to the circular arc portion 50 with the adjusting screw 56 is adjustable.
  • About the teeth comes a coarse adjustment of the angle of inclination of the work table 20, because the disc 58 can engage only in certain angular intervals (eg 10 degrees) in a tooth gap of the toothed circular arc portion 50.
  • the disk 58 can be moved by turning the fine adjustment screw 56 along the axis of the fine adjustment screw 56.
  • the position of the disk 58 can be changed at least by a distance corresponding to a pitch of the toothing of the circular arc section 50. This ensures that all tilt angles can be set within a certain range (eg from -30 degrees to 50 degrees).
  • a scale 68 allows the user to read the angle of inclination of the work table 20, or set to a precise value.
  • the lever 52 is biased by a spring element (shown in the example as SSenzugfeder 60) in the first angular position and further comprises an actuating arm 62, with which the user can bring the lever 52 against the spring force in the second angular position.
  • a locking element 64 is attached to the lever 52, with which the work table 20 can be locked in the working position.
  • the locking element 64 in the form of a latching nose has a beveled end face which is arranged on the lever 52 such that the shaped part 48 comes into contact with the bevelled end face when the work table 20 is moved into the working position and presses the lever 52 into the second angular position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne une scie à chantourner (10) comprenant une structure porteuse (12) permettant de poser la scie à chantourner (10) sur un support, une table de travail (20) portée par la structure porteuse (12) servant de support à une pièce à scier, un bras supérieur (22) s'étendant au dessus de la table de travail (20), dans une direction longitudinale de la scie à chantourner (10), ainsi qu'un premier dispositif de serrage (26), placé sur le bras supérieur (22), pour serrer une lame de scie (30) au dessus de la table de travail (20) et un second dispositif de serrage (28) pour serrer une lame de scie (30) en dessous de la table. Afin de laisser passer la lame de scie le long d'une ligne droite de liaison entre le premier et le second dispositif de serrage (26, 28), une ouverture traversante (32) est ménagée dans la table de travail entre le premier et le second dispositif de serrage. Selon l'invention, la table de travail (20) est disposée sur la structure porteuse (12) de façon à pouvoir être déplacée dans la direction longitudinale de la scie à chantourner (10) et l'ouverture (32) permettant le passage de la lame de scie (30) comporte une fente longitudinale qui s'étend dans la direction longitudinale de la scie à chantourner (10) jusqu'à un bord de la table de travail (20). Par ailleurs, la table de travail (20) peut être amenée dans une position dans laquelle la ligne de liaison entre le premier et le second dispositif de serrage (26, 28) s'étend spatialement à côté de la table de travail (20).
PCT/EP2010/057672 2009-06-11 2010-06-02 Scie à chantourner munie d'une table de travail réglable Ceased WO2010142582A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009025108.1 2009-06-11
DE102009025108.1A DE102009025108B4 (de) 2009-06-11 2009-06-11 Dekupiersäge mit verstellbarem Arbeitstisch

Publications (1)

Publication Number Publication Date
WO2010142582A1 true WO2010142582A1 (fr) 2010-12-16

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ID=42937344

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PCT/EP2010/057672 Ceased WO2010142582A1 (fr) 2009-06-11 2010-06-02 Scie à chantourner munie d'une table de travail réglable

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WO (1) WO2010142582A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965092A (zh) * 2016-06-24 2016-09-28 江门市合益印刷有限公司 一种纸箱模具专用锯机
DE202017107354U1 (de) 2017-12-04 2017-12-18 Hegner Präzisionsmaschinen GmbH Fußregler zum Steuern oder Regeln der Drehzahl eines Antriebsmotors einer Dekupiersäge sowie Dekupiersäge mit einem Antriebsmotor, dessen Drehzahl mit einem derartigen Fußregler steuer- oder regelbar ist

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228376A (en) * 1992-08-12 1993-07-20 Huang Chin Chun Scroll saw
US5390577A (en) * 1993-12-29 1995-02-21 Huang; Chin-Chung Sawing machine
EP0934789A2 (fr) * 1998-02-06 1999-08-11 Black & Decker Inc. Scie à chantourner à lame de scie ajustable par rapport à la verticale
DE202004003854U1 (de) * 2004-03-12 2004-05-06 Proxxon S.A. Dekupiersäge mit Sägeblattspannvorrichtung
DE202006005794U1 (de) * 2006-04-08 2006-07-06 Knorr, Peter Feinschnittsäge
DE102006016719B3 (de) * 2006-04-08 2007-09-06 Peter Knorr Feinschnittsäge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228376A (en) * 1992-08-12 1993-07-20 Huang Chin Chun Scroll saw
US5390577A (en) * 1993-12-29 1995-02-21 Huang; Chin-Chung Sawing machine
EP0934789A2 (fr) * 1998-02-06 1999-08-11 Black & Decker Inc. Scie à chantourner à lame de scie ajustable par rapport à la verticale
DE202004003854U1 (de) * 2004-03-12 2004-05-06 Proxxon S.A. Dekupiersäge mit Sägeblattspannvorrichtung
DE202006005794U1 (de) * 2006-04-08 2006-07-06 Knorr, Peter Feinschnittsäge
DE102006016719B3 (de) * 2006-04-08 2007-09-06 Peter Knorr Feinschnittsäge

Also Published As

Publication number Publication date
DE102009025108B4 (de) 2022-01-27
DE102009025108A1 (de) 2010-12-16

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