MULTI-FUNCTIONAL WORKTABLE SYSTEM

Abstract: Described is a worktable system comprising a supporting structure (1) and fastening means (13) supported by said supporting structure (1) for fastening a workpiece, characterized in that said fastening means (13) are adapted to provide directional guidance for movement of a tool, in particular a power tool, to machine the workpiece while it is fastened by said fastening means (13).

Description: Multi-functional worktable system The present invention relates to a worktable system comprising a supporting structure and fastening means supported by the supporting structure for fastening a workpiece. Such a worktable system has multi-functional use in connection with building work and the like. Usually, such a worktable system is transportable and, therefore, appropriate for home working. Known worktable systems provide for unconvenient handling of workpieces in conjunction with power tools. Therefore, an object of the present invention is to provide a worktable system which allows a convenient handling of workpieces in conjunction with power tools for machining workpieces. In order to achieve the above and other objects, in accordance with the present invention, there is provided a worktable system comprising a supporting structure and fastening means supported by said supporting structure for fastening a work- piece, characterized in that said fastening means are adapted to provide directional guidance for movement of a tool, in particular a power tool, to machine the workpiece while it is fastened by said fastening means. Accordingly, in the worktable system of the present invention the fastening means simultaneously fasten a workpiece and provide direction guidance for a tool to machine the workpiece. The workpiece can be machined at a point above and/or below the fastening means. Every kind of tool and in particular every kind of power tool like e.g. a saw or a drilling machine can be used. Further, it should be noted that in the terms of this invention, the "supporting structure" would normaly comprise a top support with leg support structure, but it could also consist of a top frame only or have other constructions. Preferably, stop means are provided for limiting the directional guidance. Usually the fastening means comprise jaws. In such case, preferably at least one edge of at least one jaw can be adapted to provide for movement of the tool. So, an edge of a jaw length may be used as a guide for a tool to machine a workpiece. For instance, the workpiece may be clamped to and protrude from the underside of a jaw. The tool may be guided by the outside edge of a jaw or the inside edge of a jaw. Alternatively, the two inside edges of two jaws may be used when such jaws are set at a parallel width to suite the tool. A guidance means for movement of the tool may be provided wherein the guidance means operatively cooperate with the fastening means. In a further preferred embodiment wherein the fastening means comprise at least one groove, the guidance means may comprise at least one slider slidably received in the at least one groove. Alternatively, the guidance means may operatively cooperate with at least one edge of at least one jaw. In case a tool support means for supporting the tool is provided, the fastening means may be adapted to provide guidance for movement of the tool support means, or the guidance means may be provided for movement of the tool support means. In a still further preferred embodiment, the support means comprise a sliding mount for carrying the tool, the sliding mount being moveable at an angle, preferably at a right angle, with relation to the direction of the guidance provided by the fastening means. Stop means may be provided for limited the movement parth of the sliding mount. It is to be noted that the provision of such a sliding mount is considered an independent aspect of invention. Preferably, the support means can comprise a plate for mounting a tool, said plate having at least one edge to operatively cooperate with at least one edge of at least one jaw. The plate may be adapted to be slidably held between two jaws. In this case the two inside edges of two jaws can be used as guidance when such jaws are set at a parallel width to suite the plate. Usually, the tool is mounted upon the plate. In a still further preferred embodiment wherein the fastening means comprise jaws, the fastening means further comprise a moveable clamping element provided beneath the jaws and to be tightened up to the underside of at least one jaw for clamping the workpiece against the underside of the jaw. So, the jaw forms the fixed part of a vertical clamping system in which the moveable clamping element form's a second moveable part which is tightened up to the underside of the jaw. Alignments means for aligning the workpiece in relation to the fastening means can be provided wherein the fastening means comprise jaws. In such embodiment, the alignment means may preferably be adapted so as to align the workpiece in line essentially perpendicular to the jaw length. So, for instance, a workpiece which may be clamped to the underside of a jaw may be aligned in a line perpendicular to the jaw length such that the tool using the edge of a jaw as a guide may machine the workpiece at a true right angle. Moreover, support and alignment means may be provided between the jaws for supporting and aligning a workpiece at a point or points along the machining line of the tool. In this embodiment, the support and alignment means may preferably by adjustable from side to side and/or in vertical direction to suite the width of different tools and/or the depth of different thicknesses of workpieces. Further, blade guiding means may be situated beneath the workpiece for guiding a blade of a jig saw to achieve a straight vertical cut. Holding means may be attached to the fastening means for holding the workpiece at an adjustable height below, at the level of and/or above the fastening means. In case of the provision of jaws, the holding means may be attached to each of the jaws and hold a workpiece at an adjustable height below, between and above the surface of the jaws permitting as necessary the workpiece to slide between the holding means and/or to be held in a tightly clamped fixed position. Of course, the fastening means may also be adapted so as to allow the workpiece to be moved in relation to the fastening means. In this embodiment, stops may further be provided for limiting the movement parth of the workpiece. The above and other objects and features of the present invention will become clear from the following description taken in conjunction with preferred embodiments with reference to the accomping drawings in which: Fig. 1 is a schematic side view of a worktable; Fig. 2 is a partial schematic plan view of a first preferred embodiment of a worktop section of a worktable; Fig. 3 is a partial schematic side view of a second preferred embodiment of a worktop section of a worktable; Fig. 4 is a partial schematic plan view of a second preferred embodiment of a worktop section of a worktable; Fig. 5 is a schematic side view of the distal end of the sliding table and the sliding mount of the second embodiment; Fig. 6 is a schematic side view of the distal end of the sliding table showing its cross section shape in better detail of the second embodiment; Fig. 7 a schematic enlarged view of a stop provided at a portion of the sliding table of the second embodiment; Fig. 8 is a partial schematic side view of a workpiece clamped at an adjustable level by means of workpiece supports; Fig. 9 is a partial schematic top view of a workpiece support; Fig. 10 is a schematic partical side view of another machining operation wherein the workpiece is fastened between an angle and a workpie- ce support; Fig. 1 1 is a schematic partial side view of another machining operation wherein the workpiece is clamped against the underside of the jaws; Fig. 1 2 is a schematic plan view of a further preferred embodiment of the worktop section of a worktable; Fig. 1 3 is a schematic partial side view of the embodiment of Fig. 1 2; and Fig. 14 is still another schematic partial side view of the embodiment of Fig. 1 2. In Fig. 1 it is shown a preferred embodiment of a worktable comprising a top frame 1 with inward folding leg supports 2 braced apart by removable struts 3 against blocking elements 4 and two or more work top sections 5 arranged in selected positions on the top frame 1 , two of which are provided with jaws 1 3 defining a fastening means having clamping function for fastening a workpiece. The jaws 1 3 each form a rectangular plate essentially extending over the whole width of the top frame 1 , wherein at least one of the jaws 1 3 is movable in a direction perpendicular to its length as indicated by arrow A in Fig. 1 . The worktable shown in Fig. 1 has a foldable construction for better stowing and transportation purposes. One suitable form of construction for the worktable is that it is employed in ladder fabrication so that hollow section top frame and leg support lengths joined by hollow section cross-members may provide lightness and rigidity. Fig. 2 is a schematic top view of a first preferred embodiment of the top frame 1 comprising a top frame cross-piece 8 forming one side and of the top frame 1 . Shown in Fig. 2 are two jaws 1 3 which, as already mentioned above, each form a rectangular plate and are movable in a direction perpendicular to their length. Each jaw 13 includes a pair of grooves 14 spaced from each other and extending along the length of the jaws 13 adjacent to their edges, respectively. The grooves 14A are open to the top as seen in Fig. 2. A sliding table 1 5 is in sliding engagement with the grooves 14 of one of the jaws 13 (i.e. the right-hand jaw 13 in Fig. 2) so as to slide in the line of arrow B in the direction of the length of the jaws 1 3 and, thus, of the width of the top frame 1 . In order to limit the movement of the sliding table 1 5 along the grooves 14, there are provided stops 12 fitted in at least one of the grooves 14. Whereas the sliding table 1 5 is in sliding engagement with the grooves 14 and, thus, supported by the jaw 13 at its one end, the sliding table 1 5 is provided at its distal other end with a sliding mount 1 6 which supports the distal end of the sliding table 1 5 on the top frame cross-piece 8 in a sliding manner. Further, the sliding table 1 5 comprises a sliding mount 1 7 which is movable perpendicular to the movement path of the sliding table 1 5 as indicated by arrow C. In order to limit the movement path of the sliding mount 17 along the sliding table 1 5, stops can be provided which are not shown in Fig. 2. Positioned on the sliding mount 17 is a mounting structure 18, e.g. a clamp, to hold a power tool, e.g. a drilling machine, (not shown) for machining a workpiece (not shown in Fig. 2) which is fastened by the jaws 13. A preferred second embodiment of the top frame structure is shown in Fig. 3 to 7. Like in the first embodiment, the second embodiment also comprises a sliding table 22 which operates along the length of the jaw 13 by means of runners 23 which are mounted at the underside of the sliding table 22 and inserted into the grooves 14 of the jaw 13. At its distal end the sliding table 22 is provided with a rear guide 24 which forms a step and is in contact with one edge 13a (the right-hand edge according to the Fig. 3 and 4) of the jaw 13 so as to run along such edge. Like in the first embodiment, the second embodiment also comprises a sliding mount 25 which is movable in a direction perpendicular to the length of the jaw 13 and, thus, perpendicular to the movement path of the sliding table 22 so as to operate along the length of the sliding table 22. Further, like in the first embodiment, a mounting structure 26 is arranged on the sliding mount 25 to fasten a power tool (not shown) for machining a workpiece (not shown). In the second embodiment, the mounting structure 26 is provided for holding a drilling machine and comprises two halves to be tightened together by screws and a circular opening defined by both halves to firmly clamp a portion of a drilling machine. Additional support means (not shown) could be provided for holding the power tool. Adjustable stops 27 are provided on the sliding table 22 to limit the movement of the sliding mount 25 along it. A detailed view of such a stop 27 is shown in Fig. 7. Moreover, like in the first embodiment, stops 28 are also provided in at least one groove 14 of the jaw 13 to limit the movement of the sliding table 22 along the length of the jaw 13. Fig. 8 is a side view of a workpiece W clamped at an adjustable level by means of workpiece supports 29 which are attached to jaws 13. Each workpiece support 29 comprises a vertical track 30 and is mounted on the jaw 13 so that a portion of the rear side of the track 30 is in contact with the inner edge 13a of the jaw 1 3 facing the other jaw 13. The tracks 30 of the workpiece supports 29 are provided for attaching height adjusters 31 for determining the height of the workpiece W. The height adjusters 31 of at least two different workpiece supports 29 hold a T- shaped bar 32 wherein such height adjusters 31 must be inline. Along the T- shaped bar 32 the workpiece W may be slid or held firmly dependent upon the tightening of the jaws 13. The workpiece supports 29 further comprise a slide 33 which takes up the thickness of the T-shaped bar 32. Fig. 9 is a top view of a workpiece support 29 and the height adjuster 31 which is to be tightened into position by means of nut and bolt. The workpiece supports 29 as shown in Fig. 8 and 9 can be used in conjunction with the first embodiment of Fig. 2 as well as with the second embodiment of Fig. 3 to 7, wherein the workpiece W is machined by a tool, in particular a power tool, supported on the top frame 1 as described above. Fig. 10 is a side view of another machining operation in which the workpiece W may slide along jaw 13 between an angle 35 mounted on the jaw 13 by means of a mounting base 36 which for instance is engaged with the groove 14 of the jaw 1 3 (as shown in Fig. 10). On the adjacent jaw 1 3 is fastend a workpiece support 29 as shown in the Fig. 8 and 9. The situation shown in Fig. 10 is advantageous for using a sanding tool or a drilling machine having a sander instead of a drill bit. So, the height adjuster 31 of the workpiece support(s) 29 is provided such that the sander indicated by the reference numeral 37 in Fig. 10 touches the workpiece W. Slight tightening of the jaws 13 may gradually bring the workpiece W toward the sander 37. The situation of Fig. 10 can be used with a first embodiment of Fig. 2 as well as with a second embodiment of Fig. 3 to 7, too. Fig. 1 1 is a side view of a suspended system of clamping on the jaws 13 where bars 42 running along the length of the jaws 13 are suspended underneath the jaws 1 3 by means of long bolts 43 such that a workpiece W is clamped between the underside of the jaws 13 and the top side of the clamping bars 42. A plate 38 to which a router (not shown) may be attached is guided across the workpiece W to machine a cross channel. The plate 38 is held and guided between the inner edges 13a of the jaws 1 3 as shown in Fig. 1 1 . A jig saw may be attached to the plate 38. Fig. 1 2 shows a plan view of a further preferred embodiment of the worktop section of a worktable setup for jig saw cross-cut which table is provided with clamping bars 42 as already described above and shown in Fig. 1 1 . So, in this embodiment, the workpiece W is clamped beneath the jaws 1 3 between the underside of the jaws 13 and the clamping bars 42. The jaws 13 are set at parallel spaced positions so as to suite a jig saw (not shown) therebetween which is guided along their inner edges 13a. Further, a workpiece support 29 of the type as already shown in the Fig. 8 and 9 is mounted at each face end of each jaw 13. So that four workpiece supports 29 are provided in the embodiment of Fig. 12. Whereas the workpiece supports 29 extend perpendicular to the length of the jaws 13 in the situations as shown in the Fig. 8 and 10, the workpiece supports 29 extend in the direction of the length of the jaws 13 in the situation of Fig. 12. Each pair of workpiece supports 29 positioned at the same face end of the jaws 13 is connected by a so-called saw end plate bar 44 which runs through a rectangular opening of a square 46 arranged at the underside of the heigth adjusters 31 (cf. Fig. 8). The saw end plate bar 44 also runs through a further rectangular opening formed in an end portion of a saw end plate 50. The saw end plate 50 and the surrounding arrangement is depicted in better detail in Fig. 1 3 showing a side view of the embodiment of Fig. 12. As shown in Fig. 13, the cross section of the saw end plate bar 44 essentially corresponds to that of the opening 50a in the saw end plate 50; this applies to the opening of the square 46 of the heigth adjusters 31 (cf. Fig. 8), too. At its inner end portion facing into the space between both jaws 1 3, both the saw end plates 50 each are provided with a vertical recess 50a which extends in the direction of the length of the space between the jaws 1 3 and, thus, in the direction of the movement of the blade of the jig saw (not shown) and is open to the space between the jaws 13. The recess 50a is shown in Fig. 1 2. Further, the saw end plate 50 comprises at its inner end portion a vertical step 50b which extends perpendicular to the length of the jaws 1 3 as shown in Fig. 1 3. Beneath the jaws 1 3, alignment elements 52 are provided which are mounted to the top frame 1 (a part of the top frame is shown in dotted lines in Fig. 1 2 and in solid lines in Fig. 1 3) . The alignment elements 52 and the vertical step 50b of the saw end plate 50 cooperate with each other so as to align the workpiece W in a line perpendicular to the length of the jaws 1 3 such that the jig saw (not shown) can machine the workpiece W at a true right angle up to its very end. Fig. 14 regards the same situation as Fig. 1 2 and 1 3 and shows an end view of the two jaws 13 whose inner edges 1 3a are provided for guiding the jig saw (not shown) therebetween. The view of Fig. 14 is similar to that of Fig. 1 1 in so far as the plate 38 is provided. Additionally, two plate guides 54 are positioned beneath the workpiece W (cf. also Fig. 1 3). The blade guides 54 each are provided as a rod and are spaced from each other so that therebetween a gap is defined for receiving and guiding the blade 56 of a jig saw (not shown) which is mounted on the plate 38.

Claims: C I a i m s 1 . A worktable system comprising a supporting structure ( 1 ) and fastening means (1 3) supported by said supporting structure ( 1 ) for fastening a workpiece (W), characterized in that said fastening means (1 3) are adapted to provide directional guidance for movement of a tool, in particular a power tool, to machine the workpiece (W) while it is fastened by said fastening means (1 3). 2. A worktable system according to claim 1 , characterized by stop means (1 2; 28) for limiting the directional guidance. 3. A worktable system according to claim 1 or 2, wherein said fastening means comprise jaws ( 1 3), characterized in that at least one edge (13a) of at least one jaw (1 3) is adapted to provide guidance for movement of the tool. 4. A worktable system according to at least any one of the preceding claims, characterized by guidance means (38) for movement of the tool wherein said guidance means (38) operatively cooperate with said fastening means (1 3). 5. A worktable system according to claim 4, wherein said fastening means (1 3) comprise at least one groove (14), characterized in that said guidance means comprises at least one slider (1 5; 22) slidably received in said at least one groove (14). 6. A worktable system according to claims 3 and 4, characterized in that said guidance means operatively cooperate with at least one edge ( 13a) of at least one jaw (1 3) . 7. A worktable system according to at least any one of the preceding claims, further comprising tool support means for supporting the tool, characterized in that said fastening means are adapted to provide guidance for movement of said tool support means. 8. A worktable system according to claims 4 and 7, characterized in that said guidance means are provided for movement of said tool support means. 9. A worktable system according to claim 7 or 8, characterized in that said support means (1 5; 22) comprise a sliding mount (1 7; 25) for carrying the tool, said sliding mount being movable at an angle, preferably at a right angle, with relation to the direction of the guidance provided by said fastening means (13). 10. A worktable system according to claim 9, characterized by stop means (27) for limiting the movement path of the sliding mount (25). 1 1 . A worktable system according to claim 3 as well as to claim 7 or 8, characterized in that said support means comprise a plate (38) for mounting a tool, said plate having at least one edge to operatively cooperate with at least one edge (13a) of at least one jaw (1 3). 1 2. A worktable system according to claim 1 1 , characterized in that said plate (38) is adapted to be slidably held between two jaws (13). 13. A worktable system according to at least any one of the preceding claims, wherein said fastening means comprise jaws (13), characterized in that said fastening means further comprise a movable clamping element (42) provided beneath the jaws and to be tightened up to the underside of at least one jaw (13) for clamping the workpiece (W) against the underside of said jaw (13). 14. A worktable system according to at least any one of the preceding claims, further comprising alignment means (50a; 52) for aligning the workpiece (W) in relation to said fastening (13) means wherein said fastening means comprise jaws (13), characterized in that said alignment means (50a; 52) are adapted so as to align the workpiece in a line essentially perpendicular to the jaw length. 1 5. A worktable system according to at least any one of the preceding claims, wherein said fastening means comprise jaws (13), characterized by support and alignment means (50) provided between the jaws (13) for supporting and aligning a workpiece (W) at a point or points along the machining line of the tool. 16. A worktable system according to claim 15, characterized in that said support and alignment means (50) are adjustable from side to side and/or in vertical direction. 17. A worktable system according to at least any one of the preceding claims, characterized by blade guiding means (54) to be situated beneath the workpiece (W) for guiding a blade (56) of a jig saw. 18. A worktable system according to at least any one of the preceding claims, characterized by holding means (29) to be attached to said fastening means (13) for holding the workpiece (W) at an adjustable height. 19. A worktable system according to at least any one of the preceding claims, characterized in that said fastening means (1 3) are adapted so as to allow the workpiece to be moved in relation to said fastening means (13). 20. A worktable system according to claim 1 9, characterized by stops for limiting the movement path of the workpiece. 21 . A device for supporting a tool, in particular a power tool, on a worktable having fastening means for fastening a workpiece, characterized by a sliding base for siidabely engaging with the fastening means of the worktable so as to achieve a directional movement with relation to the worktable. 22. A device according to claim 21 , characterized by a sliding mount for carrying the tool, said sliding mount being movable at an angle, preferably at a right angle, with relation to the direction of the movement of the sliding base. 23. A device according to claim 22, characterized by stop means for limiting the movement path of the sliding mount.

Inventors: KENT FRANK MICHAEL JOHN, KENT, FRANK, MICHAEL, JOHN
Applicants: KENT FRANK MICHAEL JOHN, KENT, FRANK, MICHAEL, JOHN
Application year: 2000
Main classification: B25H1
IPC codes: B23D51, B25H1