MITER SAW AND WORKPIECE SUPPORT THEREFOR

Abstract

A miter saw and a workpiece support are provided. The workpiece support has a circular disc-shaped turntable penetrated by a saw blade slot serving as a passage for the saw blade lowered into the working position, a holder on one side for fastening the saw unit, and a radial arm which extends the turntable and the saw blade slot in the longitudinal direction of the slot radially outwards on a side opposite the holder. A radial arm connection is provided, on which the radial arm is detachably and co-rotatably attached to the turntable, or on which a radially outer radial arm outer portion of the radial arm is detachably and co-rotatably attached to a radially inner radial arm inner portion of the radial arm formed integrally with the turntable. The miter saw has blade that can be moved transversely and lowered from a position above the workpiece support.

Claims

1. A workpiece support for a miter saw, suitable for rotatably mounting it on a saw stand and for co-rotating fastening thereto a saw unit having a saw blade lowerable from a position above the workpiece support, displaceable or not displaceable transversely, the workpiece support comprising: a circular disc-shaped turntable being penetrated by a saw blade slot serving as a passage for the saw blade lowered into the working position and having on one side a holder for fastening the sawing unit, a radial arm extending the rotary plate and the saw blade slot radially outwards on a side opposite the holder in a longitudinal direction of the saw blade slot, wherein a radial arm connection is provided, on which the radial arm is attached detachably and co-rotatably to the workpiece support or on which a radially outer radial arm outer portion of the radial arm is detachably and co-rotatably attached to a radially inner radial arm inner portion of the radial arm integrally formed with the rotary plate, wherein: the radial arm connection is formed as a dovetail connection of the radial arm with the workpiece support or of the radial arm outer portion with the radial arm inner portion, the radial arm connection has on both sides of the saw blade slot one insertion pin formed as a dovetail projection and an associated insertion receptacle formed as a dovetail receptacle, and a locking device is provided in order to detachably lock the radial arm connection, which locking device has a transverse bolt to be pushed into a bolt receptacle in a direction transverse to the saw blade slot, wherein the bolt receptacle with the inserted transverse bolt reaches through a side wall at least as far as to one of the two inserted insertion pins, but only through one of the inserted insertion pins, such that the saw blade slot arranged laterally adjacent thereto remains free.

2. The workpiece support according to claim 1, wherein the radial arm connection is formed as a plug-in connection of the radial arm with the workpiece support or of the radial arm outer portion with the radial arm inner portion (1a), and wherein the plug-in connection is formed in a form-fitting manner, e.g., in snug fit.

3. The workpiece support according to claim 2, wherein the radial arm connection has at least one insertion pin projecting radially inwards from the radial arm or from the radial arm outer portion, and the workpiece support or the radial arm inner portion has an insertion receptacle for each insertion pin.

4. The workpiece support according to claim 1, wherein the radial arm connection is formed as a snap-in connection of the radial arm with the workpiece support or of the radial arm outer portion with the radial arm inner portion.

5. The workpiece support according to claim 1, wherein the radial arm connection is formed such that the radial arm can be attached to the workpiece support or the radial arm outer portion can be attached to the radial arm inner portion from below.

6. The workpiece support according to claim 5, wherein the insertion receptacles are open at the bottom, in particular also open at the top.

7. The workpiece support according to claim 6, wherein the locking device for actuation comprises an actuating device, in particular an actuating device in the form of a hand knob mounted on the transverse bolt.

8. The workpiece support according to claim 1, wherein a fixing lever, which serves as part of a fixing device for fixing the workpiece support to the saw stand, is mounted on the underside of the removable radial arm or radial arm outer portion.

9. The workpiece support according to claim 1, wherein the radial arm or the radial arm outer portion has a fitting projection projecting between its two insertion pins towards the workpiece support, which fitting projection, when the radial arm or the radial arm outer portion is fitted to the workpiece support or the radial arm inner portion, engages under the workpiece support or the radial arm inner portion and fits into a corresponding receptacle on the workpiece support or the radial arm inner portion.

10. The workpiece support according to claim 1, wherein the saw blade slot is surrounded by an exchangeable table insert made of an easily machinable material such as plastic, which includes at least one turntable side insert piece and at least one radial arm side insert piece.

11. A miter saw with a saw stand and a workpiece support rotatably received thereon, as well as a saw unit co-rotatably fastened to the workpiece support, which saw unit has a saw blade being lowerable from a position above the workpiece support and being displaceable or not displaceable transversely, wherein the workpiece support is formed according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The invention will now be described with reference to the drawings wherein:

[0024] FIG. 1 is a perspective view from diagonally above on a workpiece support in an assembled condition according to an exemplary embodiment of the invention;

[0025] FIG. 2 is a perspective view of the workpiece support shown in FIG. 1 from diagonally below in an assembled condition;

[0026] FIG. 3 is a view of the workpiece support shown in FIGS. 1 and 2, corresponding to FIG. 1, but with the radial arm outer portion removed; and

[0027] FIG. 4 is a view of the workpiece support shown in FIGS. 1 to 3 corresponding to FIG. 2, but with the radial arm outer portion removed.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0028] The workpiece support shown in the figures has a turntable 2, on which a radial arm inner portion 1a projecting in radial direction is integrally formed in one piece, onto which in turn a radially outer radial arm outer portion 1 extending further radially outwards in the assembled state of the workpiece support is attached. In FIGS. 2 and 4 it can be seen an underneath pivot receptacle 8 in the center of the turntable 2, at which the turntable can be placed on a pivot of a saw stand of a miter saw.

[0029] A saw blade slot 6 extends along the radial direction of the radial arm 1, la. The saw blade slot 6 can be penetrated by a saw blade of the saw to be lowered from above during sawing. A holder 7 is provided on the side of the turntable 2 opposite to the radial arm 1, la of the turntable 2. The saw unit of the miter saw equipped with the tool support can be attached to the holder 7 in a rotationally fixed manner, i.e., co-rotatably with the turning of the turntable. The way in which the saw unit is attached to the holder 7 provided for this purpose is not explained in detail here, because this can be solved in a manner known to skilled persons, for example by an upwardly projecting support to be attached to the holder 7, which can have a swivel head with the saw blade and, in the case of a cross-pull saw, corresponding guides.

[0030] The saw blade slot 6 is surrounded by a table insert 9, 9a, which consists of an easily machinable material such as plastic and is made of two parts. A turntable side insert part 9 surrounding the saw blade slot 6 in the region of the turntable 2 and a radial arm inner portion 1a is screwed to the turntable 2 and to the radial arm inner portion 1a with screws and with a flush surface, whereas a radial arm side insert part 9a which extends in the region of a radial arm outer portion 1, can also be fastened there flush with screws.

[0031] The radial arm outer portion 1 is connected to the component consisting of turntable 2, holder 7 and radial arm inner section 1a by a radial arm connection 3, 3a formed as a dovetail connection. 3 denotes two dovetail-shaped projections or dovetail projections projecting from the end face of the radial arm outer portion 1 facing the inner radial boom section 1a, to which two corresponding dovetail receptacles 3a on the radially outward end face of the inner radial boom section 1a are assigned.

[0032] An additional locking device 4a, 4 is provided in order to secure the radial arm outer portion 1, which is attached or plugged in onto the radial arm inner portion 1a at the dovetail connection 3, 3a, there with a flush bearing surface. The locking device 4a, 4 has a transverse bolt or cross bar 4 which can be pushed in from the lateral side with a hand knob 4a attached to it, as can best be seen in FIG. 3. The transverse bolt 4 penetrates the two wall areas on the inner radial boom section 1a, which laterally enclose one of the dovetail receptacles 3a, through a corresponding fitting hole provided there, as well as the associated dovetail projection 3 on the outer radial boom section 1.

[0033] The workpiece support or the miter saw provided with the workpiece support can thus be transported in packaging units with small packing dimensions, wherein only the radial arm outer portion 1 has to be attached to the radial arm inner portion 1a and locked with the locking device 4, 4a during commissioning.

[0034] A fitting projection on the radial arm outer portion 1 projecting between the two insertion pins 3 towards the workpiece support engages under the radial arm inner portion 1a and fits into a corresponding receptacle on the radial arm inner portion 1a. On the underside of the removable outer section 1 of the radial arm, there is a fixing lever 5, which is part of a fixing device for fixing the workpiece support to the saw stand. The fixing lever 5 projects beyond the radial arm or the radial arm outer section towards the workpiece support. The dovetail receptacles 3a are open at the bottom, but also at the top. The radial arm outer portion 1 can thus be attached to the radial arm inner portion 1a from below.

[0035] It is understood that the foregoing description is that of the exemplary embodiments of the invention and that various changes and modifications may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.