DE4424615B4 - Under-table miter saw - Google Patents

Under-table miter saw

Info

Publication number
DE4424615B4
DE4424615B4 DE19944424615 DE4424615A DE4424615B4 DE 4424615 B4 DE4424615 B4 DE 4424615B4 DE 19944424615 DE19944424615 DE 19944424615 DE 4424615 A DE4424615 A DE 4424615A DE 4424615 B4 DE4424615 B4 DE 4424615B4
Authority
DE
Germany
Prior art keywords
characterized
rotary table
hand lever
miter saw
carriage
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 - Fee Related
Application number
DE19944424615
Other languages
German (de)
Other versions
DE4424615A1 (en
Inventor
Otto Bergler
Eugen Lutz
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.)
ELUMATEC GMBH, 75417 MUEHLACKER, DE
Original Assignee
ELUMATEC GMBH & CO KG
ELUMATEC GMBH & CO. KG
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 ELUMATEC GMBH & CO KG, ELUMATEC GMBH & CO. KG filed Critical ELUMATEC GMBH & CO KG
Priority to DE19944424615 priority Critical patent/DE4424615B4/en
Publication of DE4424615A1 publication Critical patent/DE4424615A1/en
Application granted granted Critical
Publication of DE4424615B4 publication Critical patent/DE4424615B4/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/06Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade arranged underneath a stationary work-table
    • B23D45/068Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade arranged underneath a stationary work-table the saw blade being adjustable according to depth or angle of cut

Abstract

Subtitle miter saw with one on the underside of a rotary rotary table (2) on a swivel arm (7) arranged sawing unit (9), whose saw blade (8) by means of a lifting drive hochfahrbar and by a Slot (4) of the rotary table is carried upwards, characterized that the swivel arm (7) directly to the underside of the rotary table (2) is hinged and with one at a concentric to the axis of rotation (3) of the rotary table (2) mounted guide up and down Carriage (13) is engaged, on which a lever designed as a lifting lever (23) with a concentric with the axis of rotation (3) of the rotary table (2) arranged and rotatably mounted on the carriage (13) mounted sleeve on the carriage (13) attacks.

Description

  • The The invention relates to a under-counter miter saw with one at the bottom a rotary rotary table arranged sawing unit, the saw blade liftable by means of a lifting drive and through a slot the round table feasible upwards is.
  • It are undercounter miter saws This type of known (miter circular saws type SKL 350 of the Hans Kaltenbach Maschinenfabrik KG, Lörrach), in which parallel guides below of the rotary table, the saw unit guided vertically displaceable is, so that's it upon actuation of a foot pedal from the rest position, in which the saw blade located below the rotary table, in an operating position is movable above, by the saw blade over the Round table protrudes. In such designs, there is a risk of Contamination of the vertical guide columns falling sawdust, through spray or by dust. The leadership therefore requires a relatively expensive cleaning from time to time, if the function does not affect shall be. In addition, that one Shift along vertical guides, in particular if it also controls the immersion of the saw blade in the workpiece should not always be possible without jerking, if possible exact saw blade guide is desired.
  • It are also controllable by hydraulic or pneumatic drives Under-table saws in which a arranged below the rotary table pivot arm carrying the saw blade, the can be swiveled directly upwards by the drive. Such types in turn allow the drive via a hand lever, as he at many miter saws he wishes is not, too.
  • The German patent DE 37 23 215 shows a circular saw, in which the saw unit is arranged on a directly below the rotatable table top and arranged transversely to the axis of rotation of the table top adjustable and definable carriage. In this way, an adjustment of a fixed stop for the material to be processed can be avoided. A feed movement of the saw blade is effected by means of a working cylinder.
  • From the German utility model DE 19 71 263 U1 a circular saw is known in which a saw unit is arranged vertically displaceable on a plurality of vertical guides below a saw table. A feed movement of the saw unit through the saw table is effected by means of a pedal mechanism. The pedal mechanism is designed so that the clamped workpiece on the saw table can not be released by a clamping jaw, as long as the blade is still above the table top.
  • Of the The invention is therefore based on the object, a table miter saw of the aforementioned To design art in such a way that a jerk-free delivery of the saw blade also possible with a hand lever is, taking the lead for the Saw blade like that should be designed that a exact, play-free as possible guide without the risk of pollution can be achieved.
  • to solution This object is achieved in a table miter saw of the type mentioned provided that the Swivel arm hinged directly to the underside of the rotary table is and with one at a concentric to the axis of rotation of the rotary table attached guide up and down movable carriage is engaged on the one as a lifting drive trained hand lever with a concentric to the axis of rotation of Round table arranged and rotatably mounted on the carriage sleeve on Sled attacks.
  • By this embodiment is used as an adjustment guide for the saw blade a pivot axis, which can also be mounted in an area on the rotary table, where the chip accumulation relatively low is. Such a pivot axis can also be relatively insensitive train against pollution. The pivoting movement itself is through the embodiment of the invention Triggered by a vertically movable carriage, which is controlled by a hand lever up and down and it does not matter that he is the exact guide of the saw blade preferably guided free of play is. Because the saw blade guided by the pivot axis is enough it, when the vertically displaceable carriage in the vertical direction guided is so that he, e.g. above a pin / slotted guide the swivel arm with the saw blade lead up or down can. This embodiment also has the advantage that the from Slide on the swivel arm exercised adjusting always in the same trajectory acts on the swivel arm, so that a quiet and even and not of forces influenced in other directions Swinging up the saw blade possible becomes. Since a lever is provided as a lifting drive, with a concentric with the axis of rotation of the rotary table arranged and rotatably mounted on the carriage sleeve to the height adjustment attacks, the direction of movement of the hand lever always remains same, even if the rotary table is twisted. Such a pivoting movement The round table is picked up by the sleeve and influences the situation the hand lever not.
  • In a further development of the invention, the sleeve is connected via a horizontally extending crossbar with a guide sleeve, in which the one side on Housing the saw mounted hand lever is guided.
  • In Particularly advantageously, there is provided for the carriage guide from two parallel columns, attached with its upper end to the bottom of the round table and held at the other end in a turntable, the am Bottom of the case the saw is stored. This column guide will Therefore mitverschwenkt at a pivoting of the rotary table. pivoted with Although this is also the sled, but concentric to Pivoting axis of the rotary table is arranged so that the He also concentrically attacking and with the hand lever in connection standing sleeve despite the pivoting of the rotary table in her Location to the saw housing always stays the same.
  • In Further development of this embodiment, the carriage on the two columns slidably held and with one in a perpendicular to the axes of the columns be provided standing plane circumferential groove, in which the as a ring-shaped Collar formed sleeve engages the end of the crossbar is arranged.
  • The Crossbar can finally at the end facing away from the collar with a guide fork be provided, which engages around a vertical guide column, the housing side is assigned, on which the lever is mounted. This embodiment has the advantage that the Crossbar is guided vertically at both ends, so that - together with the carriage and arranged on the swivel arm saw blade - at a Movement of the hand lever upwards a perfect vertical guidance of the carriage and thus also the saw blade allowed.
  • The Invention is based on an embodiment shown in the drawing and will be explained below. It demonstrate:
  • 1 a perspective view of an undercut miter saw according to the invention with a rotatably mounted in a saw housing round table,
  • 2 the cut through the miter saw the 1 in a parallel to the side walls and approximately centrally through the housing extending representation,
  • 3 the view of the saw housing the 2 in the direction of arrow 3, but with the front wall removed,
  • 4 a horizontal section through the housing of the saw after the 1 to 3 in the direction of the section lines IV-IV of 5 .
  • 5 the cross-section through the saw housing of the under-counter miter saw 1 along the line VV in 4 .
  • 6 the appearance of a cut similar 2 but in a further variant,
  • 7 the enlarged view of the adjustment guide for the hand lever of the embodiment of 6 , and
  • 8th the enlarged and schematic representation of the section along the line IX-IX in 7 ,
  • In the 1 to 5 an undercounter miter saw is shown in which in a rectangular housing ( 1 ) a recessed in the top rotatable rotary table ( 2 ) provided with a diagonally through its axis of rotation ( 3 ) extending slot ( 4 ) is provided.
  • Below the round table ( 2 ) is at this with the help of two tabs ( 5 ) a pivot bearing ( 6 ), at whose pivot pin a swivel arm ( 7 ) is stored at the free end of the storage ( 10 ) for a saw blade ( 8th ) and at the other end with the drive motor ( 9 ) for the saw blade ( 8th ) is provided. The drive of the saw blade takes place via belt drives, not shown, in the interior of the swivel arm ( 7 ) are laid. By pivoting the swivel arm ( 7 ) from in the 2 pulled position shown in the counterclockwise direction in the dot-dash line position, the saw blade arrives from its position below the rotary table ( 2 ) through the slot ( 4 ) ( 8th' ) to 2 in which the cut can be made.
  • The drive motor reaches its position ( 9 ' ) within the housing ( 1 ).
  • The swivel arm ( 7 ) is how the 5 shows, with a laterally projecting pin ( 11 ), with which he forms a schematic in 2 slot shown ( 12 ), which in turn is part of a sled ( 13 ), which is attached to two mutually parallel and vertically extending columns ( 14 ), with their upper end fixed in a guide ( 15 ) of the rotary table ( 2 ) and with its lower end in a turntable ( 16 ) which are rotatable in the ground ( 1a ) of the housing ( 1 ) is guided. The turntable ( 16 ) is concentric with the axis ( 3 ), around which the rotary table ( 2 ) turns. The two columns ( 14 ) are therefore at a rotation of the rotary table ( 2 ) concentric with the axis of rotation ( 3 ) of the rotary table ( 2 ) mitverschwenkt.
  • The sled ( 13 ) has in its lower part a cylindrical extension ( 17 ) with a concentric to the axis ( 3 ) circumferential groove ( 18 ), in which, in the manner of a connecting rod, a collar ( 19 ) formed sleeve of a crossbar ( 20 ) is guided pivotably, which in turn extends to one side of the housing and with a guide bush ( 21 ) in a longitudinal slot ( 22 ) of a hand lever ( 23 ), the front of a slot ( 24 ) of the housing ( 1 ) with a handle ( 25 protrudes) and at the other end by means of two tabs ( 26 ) and a bolt ( 27 ) pivotable on the housing ( 1 ) is stored. The crossbar ( 20 ) is over the rifle ( 21 ) through a bolt ( 28 ) with a fork ( 29 ), in turn, a vertically oriented guide column ( 30 ), firmly on the ground ( 1a ) of the housing ( 1 ) is mounted, surrounds. The crossbar ( 20 ) is vertically guided at both ends in this way. By adjusting the hand lever ( 23 ) from in the 2 undressed position into position ( 23 ' ), therefore, the carriage ( 13 ) over the crossbar ( 20 ) and with it the swivel arm ( 7 ) pivoted counterclockwise, so that the saw blade from its position within the housing ( 1 ) into the working position ( 8th' ) to 2 comes.
  • to 1 it should be added that the rotary table ( 2 ) from a stop ( 31 ) is crossed in a bow-shaped manner on the housing ( 1 ) is attached. Miter cuts can therefore be made on workpieces that are at the stop ( 31 ) - and for example on the roll feed ( 32 ) and the counter bearing ( 33 ) - without the workpiece position needs to be changed. Despite swiveled rotary table ( 2 ) can be the immersion movement of the saw blade from below by raising the hand lever ( 23 ) cause.
  • Both the edition ( 32 ) as well as the stop ( 31 ) is parallel to a side wall of the housing ( 1 ) displaceable, so that, for example, at a position of the stop ( 31 ' ), as indicated by dot-dash lines, the rotary table ( 2 ) with the saw unit and the saw blade also at 90 ° to the in the 1 shown position can be pivoted so that circular saw cuts can be performed. The under-table miter saw the 1 is equipped with an adjustable tensioning device ( 34 ) and with a suction device ( 35 ) provided for accumulating chips.
  • Due to the arrangement of the saw unit on the swivel arm ( 7 ) is a quiet and uniform delivery of the saw blade ( 8th ) is reached from below, wherein the Schwenkarmlagerung ( 6 ) can be formed so that a stable and precise guidance of the saw blade is achieved. Since the pivoting movement exclusively by the lifting movement of the carriage ( 13 ) is achieved, the Hochschwenkbewegung is also kept free of unwanted adjusting forces in other directions. The in the 1 to 5 shown under-table miter saw allowed despite the pivoting in all pivoting positions of the rotary table ( 2 ) a perfect and exact adjustment by the hand lever ( 23 ).
  • 6 shows a variant of an embodiment similar 2 , The same parts are therefore provided with the same reference numerals. Different in the embodiment of the 6 is that here the hand lever is not the usual and in the slot ( 24 ) guided clamping device for securing its position is assigned, but that here in the region of this slot ( 24 ) a slightly outwardly projecting beyond the housing rack ( 40 ), which describes a circular arc whose center is the pivot point ( 27 ) of the hand lever ( 23 ). The toothed rack ( 40 ) is in one on the housing ( 1 ) screw-on cover ( 41 ), which in turn also a slot ( 42 ) for performing the hand lever ( 23 ) having. This is better from the 7 and 8th which also clearly show that the hand lever ( 23 ) a gear ( 43 ) associated with an axis ( 44 ), which has an outwardly pointing handwheel ( 45 ) having. This axis ( 44 ) is with the hand lever via a bracket ( 46 ) firmly attached to the hand lever ( 23 ) and a corresponding bearing for the axle ( 44 ) and for the gear. This gear ( 43 ) meshes in the toothing of the toothed strip ( 40 ). About the handwheel ( 45 ) can therefore very sensitively the position of the hand lever ( 23 ) and thus also the position of the saw blade ( 8th ).
  • In order to secure the respectively set position, a clamping screw ( 47 ) provided via a hand knob ( 48 ) is operable and jamming the position of the hand lever ( 23 ) on a vertical clamping bar ( 50 ) causes.
  • The holder ( 46 ) serves as a clamping surface. It is tightened when tightening the clamping screw ( 47 ) counterclockwise about its point of articulation ( 49 ) on the hand lever ( 23 ) pivots and presses against the clamping bar ( 50 ) parallel to the slot ( 24 ) fixed to the bottom of the housing ( 1 ) is welded. This clamp rod ( 50 ) runs between the holder ( 46 ) and the hand lever, such as in particular 9 is recognizable.

Claims (10)

  1. Undercut miter saw with one on the underside of a rotatable round table ( 2 ) on a swivel arm ( 7 ) arranged sawing unit ( 9 ), whose saw blade ( 8th ) liftable by means of a lifting drive and through a slot ( 4 ) of the rotary table is feasible upwards, characterized in that the swivel arm ( 7 ) immediately the underside of the rotary table ( 2 ) is articulated and with a concentric to the axis of rotation ( 3 ) of the rotary table ( 2 ) mounted guide up and down movable carriage ( 13 ) is engaged, on which a lifting lever designed as a hand lever ( 23 ) with a concentric to the axis of rotation ( 3 ) of the rotary table ( 2 ) and rotatably mounted on the carriage ( 13 ) mounted sleeve on the slide ( 13 ) attacks.
  2. Under-counter miter saw according to claim 1, characterized in that the sleeve via a horizontally extending crossbar ( 20 ) with a guide sleeve ( 21 ) is connected, in which the one hand on the housing of the saw mounted hand lever ( 23 ) is guided.
  3. Undercut miter saw according to claim 1, characterized in that the guide consists of two parallel columns ( 14 ), which is attached at its upper end to the underside of the rotary table and at its other end in a turntable ( 16 ), which are located at the bottom of the housing ( 1 ) of the saw is stored.
  4. Undercutting miter saw according to claims 1 and 3, characterized in that the carriage ( 13 ) at the two columns ( 14 ) and with one in a direction perpendicular to the axes of the columns ( 14 ) standing plane circumferential groove ( 18 ), in which the as a ring-shaped collar ( 19 ) formed sleeve which at the end of the crossbar ( 20 ) is arranged.
  5. Undercut miter saw according to one of claims 1 to 4, characterized in that the crossbar ( 20 ) on the collar ( 19 ) end facing away with a guide fork ( 29 ), which has a vertical guide column ( 30 ), which is associated with the housing side, on which the hand lever ( 23 ) is stored.
  6. Undercutting miter saw according to one of claims 1 to 5, characterized in that the carriage ( 13 ) via a pin / link guide ( 11 . 12 ) with the swivel arm ( 7 ) is engaged for the saw unit.
  7. Undercut miter saw according to claim 1, characterized in that the hand lever ( 23 ) is associated with a toothed wheel, which rolls on a toothed strip, which extends in a circular arc around the pivot point of the hand lever, and that the gear is associated with a handwheel for adjusting the hand lever.
  8. Under-counter miter saw according to claim 7, characterized in that the hand lever is additionally associated with a clamping screw which can be actuated by a hand knob and a holder ( 46 ) against a clamp rod ( 50 ), which is at the bottom of the housing ( 1 ) is attached.
  9. Undercut miter saw according to claim 8, characterized in that the clamping bar ( 50 ) parallel to the feedthrough slot ( 24 ) of the hand lever ( 23 ) runs.
  10. Undercounter miter saw according to claim 8, characterized in that the holder ( 46 ) also for the storage of the axle ( 44 ) of the gear ( 43 ) serves.
DE19944424615 1994-07-13 1994-07-13 Under-table miter saw Expired - Fee Related DE4424615B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944424615 DE4424615B4 (en) 1994-07-13 1994-07-13 Under-table miter saw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944424615 DE4424615B4 (en) 1994-07-13 1994-07-13 Under-table miter saw
ITMI951089A IT1275442B (en) 1994-07-13 1995-05-26 Miter saw with the lower table

Publications (2)

Publication Number Publication Date
DE4424615A1 DE4424615A1 (en) 1996-01-18
DE4424615B4 true DE4424615B4 (en) 2008-03-20

Family

ID=6522976

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944424615 Expired - Fee Related DE4424615B4 (en) 1994-07-13 1994-07-13 Under-table miter saw

Country Status (2)

Country Link
DE (1) DE4424615B4 (en)
IT (1) IT1275442B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9511429B2 (en) 2013-03-15 2016-12-06 Robert BoschTool Corporation Blade drop for power device and method of manufacturing thereof
US9517516B2 (en) 2013-03-14 2016-12-13 Robert Bosch Tool Corporation Blade drop power tool with dust management

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29721091U1 (en) * 1997-06-09 1998-01-29 Elektra Beckum Ag table saw
US7210383B2 (en) 2000-08-14 2007-05-01 Sd3, Llc Detection system for power equipment
DE202005009377U1 (en) * 2005-06-14 2006-10-26 Metabowerke Gmbh Machine tool
US10022811B2 (en) 2009-07-31 2018-07-17 Sawstop Holding Llc Dust collection system for a table saw
US8752462B2 (en) * 2010-08-13 2014-06-17 Robert Bosch Gmbh Dust management system in a table saw
CN103372917B (en) * 2013-07-30 2016-07-06 俞育铭 Cutting machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941023C (en) * 1952-03-01 1956-03-29 Arne Gjerde Chainsaw with circular saw
DE1971263U (en) * 1967-08-09 1967-10-26 Gottfried Wahlen Machine tool for cutting machining.
DE3723215C1 (en) * 1987-07-14 1988-11-10 Dieter Kaltenbach Cold Circular Sawing with during the advance from below by a rotatable platen of a support table movable upwardly saw blade
DE4027316A1 (en) * 1989-08-30 1991-03-07 Ryobi Ltd to adjust the device position of a saw blade
DE4130174C2 (en) * 1991-09-11 1993-11-18 Metabowerke Kg Electric tool, in particular diving circular saw with a device for securing the tool change

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941023C (en) * 1952-03-01 1956-03-29 Arne Gjerde Chainsaw with circular saw
DE1971263U (en) * 1967-08-09 1967-10-26 Gottfried Wahlen Machine tool for cutting machining.
DE3723215C1 (en) * 1987-07-14 1988-11-10 Dieter Kaltenbach Cold Circular Sawing with during the advance from below by a rotatable platen of a support table movable upwardly saw blade
DE4027316A1 (en) * 1989-08-30 1991-03-07 Ryobi Ltd to adjust the device position of a saw blade
DE4130174C2 (en) * 1991-09-11 1993-11-18 Metabowerke Kg Electric tool, in particular diving circular saw with a device for securing the tool change

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9517516B2 (en) 2013-03-14 2016-12-13 Robert Bosch Tool Corporation Blade drop power tool with dust management
US9511429B2 (en) 2013-03-15 2016-12-06 Robert BoschTool Corporation Blade drop for power device and method of manufacturing thereof

Also Published As

Publication number Publication date
IT1275442B (en) 1997-08-07
ITMI951089A1 (en) 1996-01-15
DE4424615A1 (en) 1996-01-18
ITMI951089D0 (en) 1995-05-26

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: ELUMATEC GMBH & CO. KG, 75417 MUEHLACKER, DE

8110 Request for examination paragraph 44
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ELUMATEC GMBH, 75417 MUEHLACKER, DE

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20130201