DEVICE FOR ANGULARLY PRECISE MACHINING OF A WORKPIECE BY A TOOL GUIDED ON A GUIDE RAIL

• US 20150375389A1
• Filed: 02/10/2014
• Published: 12/31/2015
• Est. Priority Date: 02/12/2013
• Status: Active Grant

• Current Assignee: Mika Semann
• Original Assignee: Mika Semann
• Inventors: Semann, Mika
• Granted Patent: US 10,864,624 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B23D 47/025 of tables
• CPC Class Codes: B25H 1/0078 Guiding devices for hand tools
• CPC Class Codes: B27B 27/08 arranged adjustably, not limited to only one of the groups B27B27/02 - B27B27/06

Abstract

Disclosed is a device for angularly precise machining of a workpiece (9) by a tool (3) guided on a guide rail (2), wherein the tool may be, in particular, an electrically-operated hand tool such as a router or circular saw, etc., consisting of a one- or two-piece working panel (1), wherein the working panel (1) of the device is provided with a plurality of receptacles (4), which are arranged in suitable relation to each other and which serve to receive positioning devices (8) without play and perpendicularly to the working panel (1) such that, on one side, a workpiece (9) and, on the other side, a guide rail (2) for guiding a tool (3) can be positioned on or fixed to the working panel such that a defined and reproducible machining angle (11) forms between the face of the workpiece (9) to be processed, which rests against the positioning devices (8), and the guide rail (2), which is placed upon the workpiece (9) to be machined in order to guide the tool (3), which machining angle can be varied by re-inserting at least one of the positioning devices (8) into one of the receptacles (4) and/or by using positioning devices (8) of differently sized cross-sections, wherein the cross-section may be circular or even non-circular, wherein intermediate angles or “crooked” angular value can also be repeatedly set for machining by positioning devices (8), which are rotatable, non-circular in shape or eccentrically mounted, and may be fixed in their rotation.

Claims

1. A device for the machining of a workpiece (9) by a tool (3) which can be in particular an electrically operated hand tool such as a router, circular saw and plunge saw, guided on a guide rail (2), under a precise and definite angle (11) consisting of a work-plate (1) made from one or two superimposed pieces, characterized in that the work-plate (1) contains a variety of holes (4) which are located in an appropriate relation to each other allowing to mount position devices (8) to the work-plate (1) free of play and rectangular to it and in a way that allows to have a workpiece (9) and a guide rail (2) for guiding a tool (3) positioned or/and fixed on them in such a way that a definite and reproducible angle (11) between that side (10) of the workpiece (9) that is positioned at the position devices (8)and the guide rail (2) is established which can be varied by relocating at least one of the position devices (8) into another hole (4) or/and by using position devices (8) of different diameter, whereas their cross-section can be round or out-of-round while allowing to define intermediate angles (11) repeatable through rotatable position devices which can be fixed in their rotation and are out-of-round shaped or mounted eccentrically.

2. Device according to claim 1, characterized in that it consists of two superposed plates each of suitable material, wherein the upper plate is used as a work surface and can be damaged by the use of the tools guided on the guide rail (2), without impairing the function of the device and the lower plate or structure is used to accurately mount the positioning devices (8) in correct positional arrangement and wherein the upper plate can be separated from the lower one and replaced easily or mounted upside down.

3. Device according to claim 1, characterized in that the holes (4) for mounting the positioning devices (8) are arranged in a matrix or in different rows (5a, 5b, 6, 6a, 7, 7a) and have a defined angular distance in relation to a point around which the guide rail (2) or/and the workpiece (9) can be rotated and wherein this angular distance can be different from one row to another and supplemented by the possibility that the holes are also offset from one row to another allowing to reach a higher angle resolution than with just one row.

4. Device according to claim 1, characterized in that the work-plate (1) consists of additional holes in which clamping elements or holding-down devices can be mounted in order to fix the work piece (9) or/and the guide rail (2) on the work-plate (1) wherein these holes or/and such ones to hold the positioning devices (8) can also be used to fix the workpiece (9) by suction of air, i.e. by vacuum.

5. Device according to claim 1, characterized in that the device contains fitting sleeves (20) which can be mounted rectangularly and secured against twisting in the holes (4) of the work-plate (1) allowing to mount the position devices (8) in them in a definite and rectangular manner from the upper side of the work-plate (1) while the fitting sleeves cannot be damaged or impaired in their function by the use of the tools and wherein the free from play mounting of the fitting sleeves can be achieved by an appropriate press fit and a connection between the fitting sleeves and the position devices (8) free from play is achieved through an appropriate selected thread or a taper pin or another self centering connection method between these parts.

6. Device according to claim 1, characterized in that the positioning devices (8) contain a clamping mechanism which allows to be attached at the guide rail (2) and which can pull the guide rail towards the positioning device (8) until a connection between the guide rail (2) and the positioning device (8) free from play is reached and then allows to fix this position and wherein the guide rail (2) might be pressed firmly to the work piece (9) by an integrated holding-down device.

7. Device according to claim 1, characterized in that the fixing between the guide rail (2) and the positioning devices (8) is realized by magnetic force wherein the positioning device (8) can additionally contain a holding-down device which allows an additional fixation of the guide rail (2).

8. Device according to claim 1, characterized in that the correct positioning of the guide rail (2) at the positioning devices (8) is made visually recognizable wherein this can be achieved with an electrical contact which applies once a mechanical contact between the pieces is achieved and which then can be used for an appropriate signaling.

9. Device according to claim 1, characterized in that the guide rail (2) is connected in one point with a position device (8) via a suitable roller bearing or slide bearing in such a way that the connection is on the one hand without play but the guide rail (2) on the other hand can pivot around this position and can be set in height in the same time so that the working angle (11) can be set by pivoting the guide rail (2) around this first position device (8) and positioning on another positioning device (8) while the height adjustment is intended to adjust/lower the guide rail (2) to the thickness of the workpiece (9).

10. Device according to claim 1, characterized in that it has a base, wherein this may be folded and/or leveled.

11. Device according to claim 2, characterized in that the holes (4) for mounting the positioning devices (8) are arranged in a matrix or in different rows (5a, 5b, 6, 6a, 7, 7a) and have a defined angular distance in relation to a point around which the guide rail (2) or/and the workpiece (9) can be rotated and wherein this angular distance can be different from one row to another and supplemented by the possibility that the holes are also offset from one row to another allowing to reach a higher angle resolution than with just one row.

12. Device according to claim 2, characterized in that the work-plate (1) consists of additional holes in which clamping elements or holding-down devices can be mounted in order to fix the work piece (9) or/and the guide rail (2) on the work-plate (1) wherein these holes or/and such ones to hold the positioning devices (8) can also be used to fix the workpiece (9) by suction of air, i.e. by vacuum.

13. Device according to claim 2, characterized in that the device contains fitting sleeves (20) which can be mounted rectangularly and secured against twisting in the holes (4) of the work-plate (1) allowing to mount the position devices (8) in them in a definite and rectangular manner from the upper side of the work-plate (1) while the fitting sleeves cannot be damaged or impaired in their function by the use of the tools and wherein the free from play mounting of the fitting sleeves can be achieved by an appropriate press fit and a connection between the fitting sleeves and the position devices (8) free from play is achieved through an appropriate selected thread or a taper pin or another self centering connection method between these parts.

14. Device according to claim 2, characterized in that the positioning devices (8) contain a clamping mechanism which allows to be attached at the guide rail (2) and which can pull the guide rail towards the positioning device (8) until a connection between the guide rail (2) and the positioning device (8) free from play is reached and then allows to fix this position and wherein the guide rail (2) might be pressed firmly to the work piece (9) by an integrated holding-down device.

15. Device according to claim 2, characterized in that the fixing between the guide rail (2) and the positioning devices (8) is realized by magnetic force wherein the positioning device (8) can additionally contain a holding-down device which allows an additional fixation of the guide rail (2).

16. Device according to claim 2, characterized in that the correct positioning of the guide rail (2) at the positioning devices (8) is made visually recognizable wherein this can be achieved with an electrical contact which applies once a mechanical contact between the pieces is achieved and which then can be used for an appropriate signaling.

17. Device according to claim 2, characterized in that the guide rail (2) is connected in one point with a position device (8) via a suitable roller bearing or slide bearing in such a way that the connection is on the one hand without play but the guide rail (2) on the other hand can pivot around this position and can be set in height in the same time so that the working angle (11) can be set by pivoting the guide rail (2) around this first position device (8) and positioning on another positioning device (8) while the height adjustment is intended to adjust/lower the guide rail (2) to the thickness of the workpiece (9).

18. Device according to claim 2, characterized in that it has a base, wherein this may be folded and/or leveled.