EP3880418B1 - Scie à table avec unité de butée - Google Patents

Scie à table avec unité de butée

Info

Publication number
EP3880418B1
EP3880418B1 EP20700773.3A EP20700773A EP3880418B1 EP 3880418 B1 EP3880418 B1 EP 3880418B1 EP 20700773 A EP20700773 A EP 20700773A EP 3880418 B1 EP3880418 B1 EP 3880418B1
Authority
EP
European Patent Office
Prior art keywords
section
saw blade
saw
workpiece
expediently
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
EP20700773.3A
Other languages
German (de)
English (en)
Other versions
EP3880418C0 (fr
EP3880418A2 (fr
Inventor
Ondrej KOVÁCS
Václav ZVÁNOVEC
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.)
Festool GmbH
Original Assignee
Festool GmbH
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 Festool GmbH filed Critical Festool GmbH
Publication of EP3880418A2 publication Critical patent/EP3880418A2/fr
Application granted granted Critical
Publication of EP3880418B1 publication Critical patent/EP3880418B1/fr
Publication of EP3880418C0 publication Critical patent/EP3880418C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • B27G19/025—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws with guards for tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16—Saw benches
    • B27B5/22—Saw benches with non-feedable circular saw blade
    • B27B5/24—Saw benches with non-feedable circular saw blade the saw blade being adjustable according to depth or angle of cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/10—Manually-operated feeding or pressing accessories, e.g. pushers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B27/00—Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon
    • B27B27/04—Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon arranged perpendicularly to the plane of the saw blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16—Saw benches
    • B27B5/22—Saw benches with non-feedable circular saw blade
    • B27B5/24—Saw benches with non-feedable circular saw blade the saw blade being adjustable according to depth or angle of cut
    • B27B5/243—Saw benches with non-feedable circular saw blade the saw blade being adjustable according to depth or angle of cut the saw blade being arranged underneath the work-table

Definitions

  • the invention relates to a table saw according to the preamble of claim 1.
  • the present invention is particularly concerned with the task of reducing the probability of operational malfunctions and/or increasing operational reliability.
  • the table saw comprises a stop unit, a support section for supporting the workpiece, and a saw blade.
  • the table saw is expediently designed to perform a safety function, in particular for stopping the saw blade and/or moving the saw blade into a safety position, based on an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade.
  • the safety function is expediently not triggered by contact between the saw blade and the workpiece and is triggered when the saw blade comes into contact with the human body.
  • the table saw comprises the stop unit, in particular an angle stop, for guiding and/or feeding the workpiece to the saw blade of the table saw.
  • the stop unit comprises a stop arm extending in a longitudinal direction for supporting the workpiece.
  • the stop arm comprises a main section made of a first material, which extends over more than half the longitudinal extent of the stop arm.
  • the stop arm further comprises at least one second end portion disposed at a longitudinal end of the main portion. The second end portion can come into contact with the saw blade as a workpiece is advanced toward the saw blade.
  • the US 5 042 346 A Describes a device for making miter cuts.
  • a stop has a pair of extensions.
  • the US 2010/269657 A1 concerns a table saw with a stop.
  • US 6 095 024 discloses a table saw according to the preamble of claim 1.
  • An object of the invention is to modify the table saw so that the probability of
  • the end section When feeding the workpiece with the stop unit, the end section may come into contact with the saw blade.
  • Conventional stop units usually have a one-piece metal stop arm. If the saw blade comes into contact with the metal end section of such a conventional stop arm, it may It can happen that the saw blade stops and/or moves to a safety position. This disrupts the operation of the table saw. Furthermore, the stop arm can be damaged, requiring the entire stop arm to be replaced due to its one-piece design.
  • first material and second material mentioned with reference to the stop unit are different from the features “first material” and “second material” mentioned below with reference to the saw blade cover.
  • the feature “first material” mentioned with reference to the stop unit may also be referred to as “third material” or “main section material,” and the “second material” mentioned with reference to the stop unit may also be referred to as “fourth material” or "end section material.”
  • the second material mentioned in relation to the stop unit differs from that mentioned in relation to the The first material referred to as the stop unit.
  • the second material has a different conductivity than the first material.
  • it has a lower conductivity.
  • the first material is metal and/or the second material is plastic.
  • the at least one end section is expediently removably attached to the main section.
  • the at least one end section is inserted into and/or onto an end face of the main section.
  • the main section is an extruded profile and/or the end section is a plastic cap.
  • the bearing section comprises rollers, via which the bearing section is movably mounted relative to the support section. Two of the rollers are expediently aligned in different spatial directions relative to each other.
  • the table saw optionally includes a saw blade cover.
  • the saw blade cover is designed as a saw blade hood and includes a longitudinally A cover body made of a first material extending over the entire length of the table saw and at least partially covering the saw blade of the table saw.
  • the saw blade cover further comprises a contact area arranged on the front side of the cover body. The contact area is beveled relative to the longitudinal direction, so that contact of the contact area with a workpiece brought toward the saw blade can cause a deflection of the cover body.
  • One task is to modify the saw blade cover in such a way that the likelihood of operational failures can be reduced.
  • the contact area has a sliding section made of a second material along which the workpiece can slide when it comes into contact with the contact area.
  • conventional sawblade guards can cause the workpiece to cut into the material of the contact area upon contact with the contact area and subsequently become stuck there. This can then result in the sawblade guard not being deflected, preventing the sawblade from cutting. Consequently, the workpiece cannot be brought close to the sawblade's cutting area, disrupting the operation of the table saw.
  • the sliding section can prevent This prevents a workpiece from cutting into the contact area upon contact and becoming stuck there. Consequently, the likelihood of operational failures can be reduced.
  • the contact area is expediently a frontal contact surface.
  • the sliding section is expediently present only in a partial area, in particular a central horizontal area, of the frontal contact surface.
  • the cover body at least partially covers the saw blade in a covering position.
  • the cover body is mounted so as to be movable relative to the saw blade, so that the cover body can be moved into a release position by applying pressure to the contact area with the workpiece moving on the support section in the direction of the saw blade. In this release position, the saw blade is released further than in the covering position. In particular, the cutting area of the saw blade is released in the release position.
  • the cutting area is the area of the saw blade with which the workpiece is machined when the table saw is used as intended.
  • the table saw comprises a support structure with the support section, which provides a support surface for supporting a workpiece, and the saw blade, which extends through an opening in the support section so that at least a portion of the saw blade is located below the underside of the support section.
  • the table saw preferably comprises a housing arrangement located below the underside of the support section, which surrounds the portion of the saw blade located below the underside of the support section.
  • the saw blade, together with the housing arrangement, is preferably pivotable relative to the support section in order to adjust an angle between a cutting plane of the saw blade and the support surface.
  • One task is to increase operational safety.
  • the table saw includes a cover flap that covers a gap that occurs when the housing assembly is pivoted between the housing assembly and the underside of the support section. to prevent a table saw user from reaching through the gap to the saw blade. This increases the operational safety of the table saw.
  • the cover flap is expediently mounted, in particular movably, on the housing arrangement and/or the support structure.
  • the cover flap is movably mounted on the housing arrangement and/or fixedly mounted on the support structure.
  • the cover flap can be moved from a first position to a second position by pivoting the housing assembly.
  • the cover flap In the first position, the cover flap is aligned parallel to the underside of the support section and/or in the second position, it is inclined about a horizontal axis relative to the underside of the support section.
  • the support structure conveniently features several legs that can be used to prop the support section against the floor. There are open spaces between each leg through which a user can reach under the underside of the support section.
  • the table saw, and especially the support structure, is thus virtually unencapsulated, allowing a user to easily reach under the support section.
  • the x-direction can also be referred to as the height direction and runs vertically.
  • the x-direction and y-direction are horizontal directions.
  • the table saw 10, 20, 30 is exemplified as a circular table saw.
  • the table saw 10, 20, 30 is, in particular, a semi-stationary tool.
  • the table saw 10, 20, 30 comprises a saw blade 2, in particular a circular saw blade.
  • the table saw 10, 20, 30 expediently comprises a drive unit 86 for driving, in particular rotating, the saw blade 2.
  • the drive unit 86 expediently comprises an electric motor.
  • the support structure 12 further comprises a plurality of legs 7 - for example, four legs 7 arranged at the four corner areas of the support section 1 - by means of which the support section 1 is supported relative to the ground. Between the legs 7, free areas are expediently provided, which extend, for example, over more than three-quarters of the vertical extent of the legs 7. In particular, no cladding, in particular no Housing wall, present. A user can reach between two legs 7 into the free space below the support section's underside 14.
  • the support section 1 in particular the support surface 8, there is an opening, for example a slot, through which the saw blade 2 engages.
  • the opening is aligned with its longitudinal direction in the x-direction.
  • a part of the saw blade 2 is located above the support section 1, in particular above the support surface 8, and another part of the saw blade is located below the support section 1, in particular below the underside 14 of the support section.
  • Safety function is e.g. from the EP 1 234 285 B1 known, so that a detailed description of how it works will be omitted here.
  • the saw blade cover 40 is in itself in the Figure 1 shown. In the Figures 2 and 6 is the saw blade cover 40 is shown in a state attached to the table saw 10, 20, 30.
  • the saw blade cover 40 is designed in particular as a saw blade hood and comprises a cover body 41 made of a first material, extending in a longitudinal direction (of the saw blade cover 40), for at least partially covering the saw blade 2 of the table saw 10, 20, 30.
  • the saw blade cover 40 further comprises a contact region 47 arranged on the end face of the cover body 41.
  • the contact region 47 is beveled relative to the longitudinal direction of the saw blade cover 40, such that contact of the contact region 47 with a workpiece 11 moving toward the saw blade 2 can cause a deflection of the cover body 41.
  • the contact region 47 has a sliding section 48 made of a second material, along which the workpiece 11 can slide upon contact with the contact region 47.
  • the second material differs from the first material.
  • the second material expediently has a greater hardness than the first material.
  • the first material is, in particular, plastic and/or the second material is, in particular, metal, preferably aluminum.
  • the saw blade cover 40 in particular the cover body 41, is preferably elongated and in particular flat and/or plate-shaped.
  • the cover body 41 is sword-shaped.
  • the largest surface areas Sides of the cover body 41 - in particular the long sides - are aligned normal to a horizontal direction, in particular normal to the y-direction, as shown in the Figures 2 and 6 is shown.
  • an opening 43 in particular a slot, into which the saw blade 2 can be at least partially received.
  • the saw blade 2 is covered, for example, by the longitudinal sides, the top side, and/or the front end face of the cover body 41.
  • the saw blade cover 40 comprises a connecting section 44, which, for example, has a suction connection 45.
  • a suction hose (not shown in the figures) can be connected to the suction connection 45 in order to extract dust particles that arise when sawing the workpiece 11.
  • the connecting section 44 comprises a mechanical interface for fastening the saw blade cover 40 to a fastening section 46 of the table saw 10, 20, 30, in particular to the riving knife 9.
  • the riving knife 9 is arranged, for example, behind the saw blade 2 in the x-direction. The riving knife 9 protrudes, for example, from the opening in the support surface 8.
  • the cover body 41 is expediently mounted on the connecting section 44 so as to be pivotable about a horizontal axis, in particular an axis running in the y-direction.
  • the connecting section 44 is arranged in the longitudinal direction of the saw blade cover 40 on the rear end face of the saw blade cover 40. In the state fastened to the fastening section 46, i.e. when the saw blade cover 40 is installed as intended on the table saw 10, 20, 30, the saw blade cover 40 expediently aligned with their longitudinal direction parallel to the x-direction.
  • the contact area 47 already mentioned above is arranged in the longitudinal direction of the saw blade cover 40 on the front end face of the saw blade cover 40.
  • the contact area 47 expediently represents the front end face of the saw blade cover 40, in particular the front end face of the cover body 41.
  • the contact area 47 is bevelled relative to the longitudinal direction of the saw blade cover 40. As shown in the Figures 2 and 6 As can be seen, the contact area 47 (when the saw blade cover 40 is installed) is beveled relative to the x-direction and relative to the support surface 8, i.e., inclined. In particular, the contact area 47 is aligned perpendicular to an xz-direction. In an xz-section, the contact area 47 runs diagonally from the bottom to the top right, in the direction away from the saw blade 2.
  • the cover body 41 expediently has a contact point 53 which, in the installed state of the saw blade cover 40, preferably forms the lowest point of the saw blade cover 40 and/or rests on the support surface 8 (provided that the cover body 41 is not deflected, in particular lifted, by being subjected to the action of the workpiece 11).
  • the contact area 47 is advantageously curved in an xz section, in particular parabolic.
  • the contact area 47 is bevelled in such a way that when a workpiece 11 located on the support surface, which is moving in the x-direction towards the saw blade 2, strikes the contact area 47, a A force component (in particular an upward force component) is provided which causes a deflection, in particular a pivoting, of the cover body 41 relative to the saw blade 2, the support surface 8 and/or the connecting section 44, in particular a deflection and/or pivoting upwards.
  • the position of the cover body 41 can be changed so that the cover body 41 clears the path to the saw blade 2 and/or the cutting area of the saw blade 2.
  • the cover body 41 expediently lifts off the support surface 8 with its contact point 53.
  • the cover body 41 Before the workpiece 11 comes into contact with the contact area 47, the cover body 41 is expediently in a covering position in which the cover body 41 at least partially covers the saw blade 2 and the contact point 53 expediently rests on the support surface 8. If the contact area 47 is subjected to the workpiece 11 moving in the direction towards the saw blade 2, the cover body 41 is deflected further and further until it is in a release position in which the saw blade 2 is released further than in the covering position. Expediently, in the release position, the cover body 41 is deflected so far that the workpiece 11 can be fed into the cutting area of saw blade 2 and can be processed by saw blade 2.
  • the sliding section 48 can also be referred to as a reinforcement of the end face of the saw blade cover.
  • the saw blade cover can also be referred to as a protective device.
  • the sliding section 48 is expediently a strip made of a hard material that is attached to the protective device so that the end face - in particular the contact area 47 - of the protective device can slide with the strip on a contact edge of a cut material of a workpiece to be machined.
  • the sliding section 48 - for example the hard material strip - protects the end face of the protective device from pinching (digging/notching) on the sharp contact edge of the cut material, which slides over the hard material strip when the cut material is guided into the cut.
  • the stop arm 55 further comprises at least one second end section 52 arranged at an end of the main section 51 located in the longitudinal direction 54.
  • the stop arm 55 comprises a second end section 52 at each of the two ends located in the longitudinal direction, so that the stop arm has two end sections 52.
  • the table saw 20 is expediently designed to perform the safety function, in particular for stopping the saw blade 2 and/or for moving the saw blade 2 into a safety position, based on an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade 2.
  • the electrical property, in particular the electrical conductivity of the second material is such that the table saw 20 does not perform the safety function when the saw blade comes into contact with the end section 52.
  • the electrical property in particular the electrical conductivity of the first material, is such that the table saw 20 performs the safety function when the saw blade comes into contact with the first material.
  • the stop arm 55 is expediently designed in the shape of a strip and can also be referred to as a guide strip.
  • the stop arm 55 is aligned with its largest side - its long side - normal to a horizontal direction, expediently orthogonal to the support surface 8.
  • the main section 51 of the stop arm 55 expediently extends over more than 70% of the longitudinal extent of the stop arm 55.
  • the main section 51 is designed in the shape of a strip and with its The largest side in terms of area is aligned orthogonally to the support surface 8.
  • the long sides of the main section 51 are rectangular, for example.
  • the main section 51 is expediently an extruded profile and is made, in particular, of metal.
  • an end section 52 adjoins both ends of the main section 51.
  • Each end section expediently takes up less than 20% of the longitudinal extent of the stop arm 55.
  • Each end section 52 expediently continues the transverse outer contour of the main section 51 in the longitudinal direction, so that the stop arm 55 as a whole results in a strip-shaped body with a constant thickness.
  • Each end section 52 expediently has the same thickness as the main section 51.
  • the end face of each end section 52 located in the longitudinal direction of the stop arm 55 is beveled.
  • Each end section 52 is aligned with its largest side in terms of area - the long side - normal to the support surface 8. Due to the bevel on the respective end face, the long side of each end section 52 is, for example, triangular in shape.
  • Each end section 52 is expediently removably attached to the main section 51.
  • each end section 51 is inserted into and/or onto an end face of the main section 52.
  • each end section 52 is designed as a plastic cap.
  • Each end section 52 is expediently attached to the main section 51 via a snap-in connection.
  • each end section 51 has a snap-in element 62 that engages a corresponding snap-in opening in the main section 51.
  • Each end section 52 can be conveniently removed from the main section 51 and replaced with a new, identically designed end section 52.
  • Each end section 52 is conveniently a wearing part. In particular, tool-free and/or non-destructive attachment and/or removal of each end section 52 from the main section 51 is possible.
  • the stop arm 55 expediently further comprises a cover layer 53 arranged on a longitudinal side of the stop arm 55.
  • the cover layer 53 is arranged in particular on that longitudinal side of the stop arm 55 against which the workpiece 11 rests during the intended use of the stop unit 50.
  • the cover layer 53 expediently covers the entire longitudinal side of the stop arm 55.
  • the cover layer 53 can expediently be made of a material that does not trigger the aforementioned safety function upon contact with the saw blade 2.
  • the stop unit 55 further comprises a bearing section 67 with which the stop unit 55 can be movably mounted on the support structure 12 of the table saw 20.
  • the bearing section 67 comprises a roller section 56 on which a plurality of rollers 57, 58 are arranged, via which the bearing section 67 can be movably mounted on the support structure 12.
  • the roller section 56 comprises, for example, a horizontal section 64 extending in a horizontal direction, on which a plurality of, for example two, vertically extending vertical sections 65 are arranged.
  • each vertical section 65 comprises two rollers 57, 58 aligned in different spatial directions—for example, one horizontal roller 57, the roller plane of which is aligned parallel to a horizontal plane, and one vertical roller 58, the roller plane of which is aligned parallel to a vertical plane.
  • the roller section 56 expediently further comprises a sliding block 63.
  • the sliding block 63 is in particular elongated and expediently arranged on the underside of the horizontal section 64.
  • the stop arm 55 is mounted via the pivot bearing 60 so as to be pivotable on the connecting section 59
  • the connecting section 59 is mounted via the linear bearing so as to be linearly movable, in particular in the longitudinal direction of the connecting section 59, on the bearing section 67.
  • one or more operating elements are provided in order to control the linear bearing, the To lock and/or release the pivot bearing 60 and/or the bearing of the bearing section 67 on the support structure.
  • the mounting of the stop unit 55 on the support structure 12 is shown as an example in the Figures 5 and 6 shown.
  • the support structure 12 of the table saw 20 has one or more guide elements 6 on which the bearing section 67 is or can be mounted.
  • each guide element 6 is arranged on a respective peripheral wall 5 of the support structure 12, in particular of the support section 1.
  • Each peripheral wall is oriented perpendicular to a horizontal direction.
  • Each guide element 6 is expediently designed as a rail element extending in a horizontal direction.
  • each guide element 6 provides a groove extending in a horizontal direction, in particular a V-groove, into which the aforementioned sliding block 63 is inserted when the bearing section 67 is mounted on the support structure 12.
  • Each guide element 6 is expediently arranged offset downward in the z-direction relative to the support surface 8.
  • Each guide element 6 provides a respective linear guide path for the bearing section 67.
  • the bearing section 67 can be removed from one guide element 6 and attached to another guide element 6, for example, to another peripheral wall 5.
  • the stop unit 50 with its bearing section 67 is mounted, for example, on a peripheral wall 5 oriented perpendicular to the y-direction.
  • the stop unit 50 can be moved linearly in the x-direction along the guide element 6 located on this peripheral wall 5.
  • the stop arm 55 is located at least partially on or above the support surface 8 and can be positioned in its x-coordinate by the linear movement of the stop unit 50, in particular relative to the support section 1 and/or the saw blade 2.
  • the stop unit 50 can be removed from the peripheral wall 5 oriented perpendicular to the y-direction and attached to a peripheral wall 5 oriented perpendicular to the x-direction. There, the stop unit 50 can then be moved in the y-direction to position the stop arm 55 in its y-coordinate.
  • the Figure 6 shows a detailed view of the mounting of the bearing section 67 on the peripheral wall 5 and the guide element 6 of the support structure 12.
  • the bearing section 67 engages with the guide element 6.
  • the sliding block 63 is inserted into the groove provided by the guide element 6.
  • the vertical rollers 58 rest against the guide element 6 from below.
  • the horizontal rollers 57 rest against the peripheral wall 5.
  • the guide of the stop unit 50 is therefore in a V-groove, which is not (as is conventional) arranged in the tabletop – for example, the support surface 8 – but instead is arranged on the peripheral wall 5. Furthermore, the guide is provided by rollers on the V-groove. In addition, there are expediently lateral rollers – the horizontal rollers – which counteract tilting. The rollers are rotatably mounted on the bearing section, which can also be referred to as the angle stop frame.
  • the guide arm is attached to the frame of the angle stop (for example, via the connecting section), which rests on the support section, which is also referred to as the saw table. The guide arm guides the workpiece to be machined.
  • the guide arm is adjustable, preferably with respect to the cutting plane, at any angle within a range of +/-90°. At this angle, it can be attached to the crosscut stop frame and used to guide and/or push the material into the cutting area of the saw blade.
  • the angle of rotation of the guide arm can be read off the angle scale, which is part of the crosscut stop.
  • the guide arm also known as a guide rail
  • the guide arm has protective caps attached to its ends that prevent the activation of a safety function, particularly the "Active Injury Mitigation” (AIM) function, when sawing into the blade.
  • AIM Active Trauma Mitigation
  • the AIM function can also be referred to as an active injury mitigation function.
  • a table saw 30 will be explained, which provides an embodiment not according to the invention.
  • the table saw 30 is expediently designed like one of the table saws explained above.
  • the table saw 30 comprises the support structure 12 with the support section 1, which provides the support surface 8 for supporting the workpiece 11, as well as the saw blade 2, which extends through the opening of the support section 1, so that at least a portion of the saw blade 2 is located below the support section underside 14.
  • the table saw 30 further comprises a housing assembly 80 located below the support section underside 14, which surrounds the portion of the saw blade 2 located below the support section underside 14.
  • the saw blade 2, together with the housing assembly 80, is movable relative to the support section 1. pivotable to adjust an angle between a cutting plane of the saw blade 2 and the support surface 8.
  • the table saw 30 comprises a cover flap 87 which covers a gap created between the housing assembly 80 and the support section underside 14 when the housing assembly 80 is pivoted, in order to prevent a user of the table saw 30 from reaching through the gap to the part of the saw blade 2 located below the support section underside 14.
  • a section of the support section underside 14 and of an adjusting section 3 located thereon is shown.
  • the adjusting section 3 serves to pivot the saw blade 2 about a horizontal pivot axis, in particular a pivot axis running in the x-direction.
  • the adjusting section 3 comprises a bearing section 81 arranged on the support structure 12, in particular the support section underside 14, and a pivot section 82 which is pivotably mounted relative to the bearing section 81 about the aforementioned pivot axis.
  • the pivot axis is defined, for example, by a guide section 94 provided on the bearing section 81, in particular a guide slot, on which the pivot section 82 is guided.
  • the Figure 7 shows the pivoting section 82 in a normal position in which the pivoting section 82 is not pivoted and is aligned orthogonally to the support section underside 14.
  • the Figure 8 shows the pivoting section 82 in a pivoting position in which the pivoting section 82 pivots and is not aligned orthogonally to the support section underside 14.
  • the pivoting section 82 comprises, by way of example, the housing arrangement 80, the saw blade 2 and expediently the drive unit 86.
  • the drive unit 86 and the saw blade 2 are preferably mounted so as to be linearly movable relative to the housing arrangement 80 in order to adjust how far the saw blade 2 protrudes from the opening in the support surface 8.
  • the housing arrangement 80 comprises, by way of example, a housing shell 83 whose largest side in terms of area, hereinafter also referred to as the lateral side 85, is oriented perpendicular to the y-direction in the normal position.
  • the housing shell 83 further comprises an upper side 84 oriented orthogonally to the lateral side 85, which, in the normal position of the pivot section 82, is oriented parallel to the support section underside 14.
  • the housing shell 83 further comprises a transverse side 93 oriented orthogonally to the lateral side 85 and orthogonally to the upper side 84, which is expediently oriented perpendicular to the x-direction.
  • the cover flap 87 is expediently made of a rigid material, preferably metal.
  • the cover flap 87 is expediently designed as a cover plate.
  • the cover flap 87 comprises a plate-shaped cover section 88.
  • the cover flap 87 is elongated and oriented with its longitudinal direction in the x-direction.
  • the cover flap 87 is expediently mounted on the housing arrangement 80 and the support structure 12 in such a way that the cover flap 87 is pivoted by pivoting the housing arrangement 80 in the opposite direction to the pivoting movement of the housing arrangement 80.
  • the accessory fastening structure 100 is expediently attached to the support section underside 14 and extends vertically downwards from the support section underside 14.
  • the accessory fastening structure 100 is essentially plate-shaped and with its Plate plane normal to a horizontal direction, exemplified normal to the y-direction.
  • the accessory fastening structure 100 comprises a plurality of interfaces to which accessory elements for the table saw can be attached, in particular accessory elements that are not currently in use.
  • the accessory fastening structure 100 serves in particular for storing the accessory elements. In the attached state, the accessory elements are expediently freely accessible from the outside and can preferably be removed from the accessory fastening structure 100 without tools.
  • the accessory fastening structure 100 has one, several or all of the following interfaces: a first interface 101, comprising in particular a locking hook, for fastening a push stick 105, a second interface 102, comprising in particular a locking hook, for fastening the stop unit 50, a third interface 103, comprising in particular a locking hook, for fastening the riving knife 9, a fourth interface 104, comprising in particular a locking hook, for fastening a work center, for example a replacement cartridge, in particular for the safety function, and/or a fifth interface for fastening the saw blade cover.
  • the accessory mounting structure 100 preferably serves for the secure storage of the accessories on the table saw.
  • the aforementioned interfaces are integrated into the accessory mounting structure 100.
  • the interfaces expediently have fixing elements.
  • the accessory mounting structure 100 preferably allows the user to easily remove the push stick 105 from the front of the table saw, which is oriented perpendicular to the x-direction.
  • the bag is attached to the table top with a screw and there is a side snap fastener to reduce horizontal movement.
  • a suction plate 130 is provided.
  • the suction plate 130 is in the Figure 11 unequipped and in the Figure 12 shown equipped with accessories.
  • the extraction plate 130 can be provided on its own or as part of a table saw, in particular one of the table saws 10, 20, 30 described above.
  • the extraction plate 130 is expediently arranged below the support section underside 14 and at least partially surrounds the saw blade 2.
  • the extraction plate 130 comprises a suction connection 131 to which a suction hose can be attached for extracting dust generated during sawing.
  • the suction plate 130 comprises, on its side facing away from the saw blade 2, a first interface 141 for a replacement saw blade 142 as well as further interfaces for fastening accessory elements 135, in particular tools for assembling and disassembling the saw blade 2, 142 and the expansion wedge and/or riving knife 9.
  • at least one accessory element 135 represents a part of the first interface 141.
  • the function of the extraction plate is extended in that the extraction plate also serves as a spare blade holder and for storing the tools for assembling and disassembling the saw blade and the expansion wedge.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Claims (13)

  1. Scie à table (20), comprenant une section de support (1) pour poser une pièce à usiner (11), une lame de scie (2) et une unité de butée (50), notamment une butée angulaire, pour guider et/ou avancer la pièce à usiner vers la lame de scie (2), dans laquelle l'unité de butée (50) comprend un bras de butée (55) s'étendant dans une direction longitudinale (54) pour mettre en appui la pièce à usiner, dans laquelle le bras de butée (55) présente une section principale (51) fabriquée à partir d'un premier matériau, qui s'étend sur plus de la moitié de l'extension longitudinale du bras de butée (55) et présente au moins une deuxième section d'extrémité (52) disposée sur une extrémité de la section principale (51) se trouvant dans la direction longitudinale (54), qui peut entrer en contact avec la lame de scie (2) lors de l'avance d'une pièce à usiner vers la lame de scie (2), caractérisée en ce que l'au moins une
    section d'extrémité (52) est fabriquée à partir d'un deuxième matériau, dans laquelle la scie à table (20) est réalisée sur la base d'une propriété électrique, notamment d'une conductivité électrique, d'un objet en contact avec la lame de scie (2), pour exécuter une fonction de sécurité, notamment pour arrêter la lame de scie (2) et/ou pour amener la lame de scie (2) dans une position de sécurité, dans laquelle la propriété électrique, notamment la conductivité électrique du deuxième matériau de la section d'extrémité (52) est telle que la scie à table (20) n'exécute pas la fonction de sécurité en cas de contact de la lame de scie (2) avec la section d'extrémité (52).
  2. Scie à table (20) selon la revendication 1, dans laquelle le deuxième matériau présente une conductivité différente du premier matériau.
  3. Scie à table (20) selon la revendication 1 ou 2, dans laquelle le premier matériau est du métal et/ou le deuxième matériau est du plastique.
  4. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle l'au moins une section d'extrémité (52) est fixée de manière amovible à la section principale (51).
  5. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle l'au moins une section d'extrémité (52) est insérée dans et/ou sur une face frontale de la section principale (51).
  6. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle la section principale (51) est un profilé extrudé et/ou la section d'extrémité (52) est un capuchon en plastique.
  7. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle le deuxième matériau présente une conductivité inférieure à celle du premier matériau.
  8. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle le deuxième matériau présente une conductivité électrique inférieure à celle du corps humain.
  9. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle le bras de butée (55) présente respectivement une section d'extrémité (52) aux deux extrémités se trouvant dans la direction longitudinale, de sorte que le bras de butée (55) présente deux sections d'extrémité (52), dans laquelle chaque section d'extrémité (52) est avantageusement conçue en tant que capuchon en plastique.
  10. Scie à table (20) selon l'une quelconque des revendications précédentes, dans laquelle le bras de butée (55) comprend en outre une couche de recouvrement (53), qui est disposée sur un côté longitudinal du bras de butée (55) et est fabriquée à partir d'un matériau qui ne déclenche pas la fonction de sécurité lors d'un contact avec la lame de scie (2).
  11. Scie à table (20) selon une revendication précédente, comprenant une structure d'appui (12) avec une surface de support (8) pour poser la pièce à usiner (11) lors de l'usinage de la pièce à usiner (11) avec la lame de scie (2), ainsi que l'unité de butée (50) pour guider et/ou avancer la pièce à usiner vers la lame de scie (2), dans laquelle l'unité de butée (50) comprend une section de palier (67) qui est en prise avec un élément de guidage (6) de la scie à table (20) afin de fournir un logement mobile de l'unité de butée (50) par rapport à la structure d'appui (12) le long de l'élément de guidage (6), dans laquelle l'élément de guidage (6) est disposé de manière décalée vers le bas par rapport à la surface de support (8).
  12. Scie à table (20) selon la revendication 11, dans laquelle la section de palier (67) comprend des rouleaux (57, 58) par l'intermédiaire desquels la section de palier (67) est montée mobile par rapport à la section d'appui (12), dans laquelle au moins deux des rouleaux (57, 58) sont orientés l'un par rapport à l'autre dans des directions spatiales différentes.
  13. Scie à table (20) selon la revendication 11 ou 12, dans laquelle chaque élément de guidage (6) est conçu en tant qu'élément de rail s'étendant dans le sens horizontal et/ou chaque élément de guidage (6) fournit une rainure, notamment une rainure en V, s'étendant dans le sens horizontal.
EP20700773.3A 2019-01-14 2020-01-09 Scie à table avec unité de butée Active EP3880418B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019200366.4A DE102019200366A1 (de) 2019-01-14 2019-01-14 Sägeblattabdeckung, Anschlagseinheit und Tischsäge
PCT/EP2020/050383 WO2020148148A2 (fr) 2019-01-14 2020-01-09 Unité de butée et scie d'établi

Publications (3)

Publication Number Publication Date
EP3880418A2 EP3880418A2 (fr) 2021-09-22
EP3880418B1 true EP3880418B1 (fr) 2025-10-08
EP3880418C0 EP3880418C0 (fr) 2025-10-08

Family

ID=69157854

Family Applications (4)

Application Number Title Priority Date Filing Date
EP20700773.3A Active EP3880418B1 (fr) 2019-01-14 2020-01-09 Scie à table avec unité de butée
EP21199058.5A Active EP3960405B1 (fr) 2019-01-14 2020-01-09 Scie circulaire à table
EP20700774.1A Active EP3820658B1 (fr) 2019-01-14 2020-01-09 Scie sur table
EP20700462.3A Pending EP3911484A1 (fr) 2019-01-14 2020-01-09 Couvercle de protection de lame de scie et scie d'établi

Family Applications After (3)

Application Number Title Priority Date Filing Date
EP21199058.5A Active EP3960405B1 (fr) 2019-01-14 2020-01-09 Scie circulaire à table
EP20700774.1A Active EP3820658B1 (fr) 2019-01-14 2020-01-09 Scie sur table
EP20700462.3A Pending EP3911484A1 (fr) 2019-01-14 2020-01-09 Couvercle de protection de lame de scie et scie d'établi

Country Status (8)

Country Link
US (3) US11858167B2 (fr)
EP (4) EP3880418B1 (fr)
JP (3) JP7541010B2 (fr)
CN (3) CN113348060A (fr)
DE (1) DE102019200366A1 (fr)
DK (1) DK3960405T3 (fr)
FI (1) FI3960405T3 (fr)
WO (3) WO2020148148A2 (fr)

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US20240051173A1 (en) * 2022-08-10 2024-02-15 Techtronic Cordless Gp Table saw including storage mount for blade guard assembly

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Publication number Publication date
CN113382833A (zh) 2021-09-10
FI3960405T3 (fi) 2024-01-08
CN113646146B (zh) 2023-06-09
EP3960405A1 (fr) 2022-03-02
JP7541010B2 (ja) 2024-08-27
WO2020148146A1 (fr) 2020-07-23
CN113348060A (zh) 2021-09-03
JP7230214B2 (ja) 2023-02-28
US12064896B2 (en) 2024-08-20
US12202167B2 (en) 2025-01-21
EP3820658B1 (fr) 2024-04-10
WO2020148149A1 (fr) 2020-07-23
WO2020148148A3 (fr) 2020-09-10
US20210387373A1 (en) 2021-12-16
DK3960405T3 (da) 2024-01-08
US20220097249A1 (en) 2022-03-31
CN113382833B (zh) 2023-08-01
WO2020148148A2 (fr) 2020-07-23
EP3880418C0 (fr) 2025-10-08
EP3960405B1 (fr) 2023-10-25
JP2022516267A (ja) 2022-02-25
US11858167B2 (en) 2024-01-02
EP3820658A1 (fr) 2021-05-19
CN113646146A (zh) 2021-11-12
DE102019200366A1 (de) 2020-07-16
EP3911484A1 (fr) 2021-11-24
JP2022516527A (ja) 2022-02-28
JP7233547B2 (ja) 2023-03-06
US20210387374A1 (en) 2021-12-16
JP2022515676A (ja) 2022-02-21
EP3880418A2 (fr) 2021-09-22

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