Tool device and method

Abstract

The invention relates to a tool device (1), in particular a sawing device, comprising a fastening section (3), in particular a bearing section for bearing a workpiece; the invention relates to a tool device (1) comprising a fixed section (3), and an adjustment section (7) having a tool (4), in particular a saw blade, which can be adjusted relative to the fixed section (3) during the execution of an adjustment movement (8) in order to adjust the position, in particular the angular position, of the tool (4) relative to the fixed section (3), and comprising a guide device (16), the guide device (16) is designed to guide the adjustment section (7) during the adjustment movement relative to the fixed section (3), the guide device (16) comprising a guide structure (18) defining a movement path (17) and a guide section (20) resting on a guide contour (19) of the guide structure (18), the guide section can be moved relative to the guide structure (18) along the movement path (17) in order to carry out the adjustment movement (8). According to the invention, the tool device (1) comprises a pressing mechanism (21) having a spring element (22), which is designed to press the guide section (20) against the guide structure (18) with a pressing force (24) on the basis of a spring force (23) provided by the spring element (22) in order to reduce or eliminate a gap between the guide section (20) and the guide structure (18) along the movement path (17).

Description

Technical Field

[0001] The invention relates to a tool device, in particular a sawing device, comprising: a fixed section, in particular a support section for supporting a workpiece; and an adjustment section with a tool, in particular a saw blade, which can be adjusted relative to the fixed section during an adjustment movement in order to adjust the position, in particular the angular position, of the tool relative to the fixed section; a guide device, which is designed to guide the adjustment section during an adjustment movement relative to the fixed section, wherein the guide device comprises a guide structure defining a movement path and a guide section resting on a guide contour of the guide structure, which guide section can be moved relative to the guide structure along the movement path to perform the adjustment movement. The adjustment movement is, for example, a pivoting movement, and the guide structure is used in particular to define a virtual pivot axis for the adjustment movement. Background Art

[0002] In conventional mobile or semi-stationary table saws, the angular position of the saw blade is usually set purely mechanically (i.e., in particular without a motor) via user operation (e.g., via a first operating member). After setting the angular position, the user must clamp the saw blade at the set angular position by further user operation, e.g., using a second operating member. The clamping is also usually used to reduce or eliminate the play that occurs in the radial direction of the angle adjustment. Such a solution is explained in US2019366577A1. Summary of the invention

[0003] The object of the present invention is to provide a tool device that is easy to operate and enables reliable and precise machining of workpieces.

[0004] This object is achieved by a tool device according to claim 1. The tool device comprises a pressing mechanism with a spring element, which is designed to press the guide section against the guide structure with a pressing force based on the spring force provided by the spring element, so as to reduce or eliminate the gap between the guide section and the guide structure, in particular the guide contour, along the movement path.

[0005] By reducing or eliminating the gap, reliable and accurate processing of the workpiece can be achieved. The clamping force is particularly oriented in a radial direction relative to the (particularly virtual) pivot axis of the adjustment movement, so that the gap along this radial direction is particularly reduced or eliminated. The clamping mechanism automatically reduces or eliminates the gap, i.e., no separate user operation (e.g., to trigger a clamping mechanism) is required, while conventional tool devices usually require such separate user operation. Therefore, the tool device is easy to operate. The fixing of the tool in the direction of the movement path is preferably carried out by a self-locking drive device, which is used to drive the adjustment section so that the adjustment section is in the adjustment movement. Preferably, therefore, no separate user operation (e.g., to trigger a clamping mechanism) is required for fixing the tool in a desired position, particularly an angular position. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Further exemplary details and exemplary embodiments are explained below with reference to the drawings.

[0007] Figure 1 is a perspective view of a tool device designed as a sawing device by way of example; Figure 2 is a component block diagram of a tool device; Figure 3 is a perspective view of a displacement section, a guide device and a drive device of a tool device; Figure 4 is a side view of a first end of the transposition section; Figure 5 is a perspective view of a guide section of a tool device; Figure 6 A hold-down assembly of a tool device is shown; Figure 7 The lever component of the clamping assembly is shown; and Figure 8 is a side view of the second end of the transposing section. DETAILED DESCRIPTION

[0008] Reference is made below to the x, y and z directions shown in the figures, which are preferably oriented orthogonally to one another. The x and y directions are horizontal directions (in the conventional orientation of the tool device 1 ). The z direction is a vertical direction and points upwards, for example.

[0009] Figure 1A tool device 1 is shown, which is designed as a sawing device, in particular a table saw, by way of example. The tool device 1 is designed in particular as a semi-stationary tool device 1. A semi-stationary tool device is a tool device which is stationary on a base, such as a workbench or a work table, during operation, i.e. when machining a workpiece, and is designed, in particular in view of its weight and / or its dimensions, so that it can be carried by one person. The tool device can also be designed as a hand-held circular saw or a chopping saw. Furthermore, the tool device can be designed as a tool device other than a sawing device, such as a milling machine.

[0010] By way of example, the tool device 1 has a support structure 2, the tool device 1 can advantageously be placed on a base via a bottom surface 5 of the support structure 2. The support structure 2 has, for example, a substantially cuboid basic shape. The support structure 2 advantageously comprises an outer housing (or at least a part of an outer housing) of the tool device 1.

[0011] The tool device 1 comprises a fixing section 3, which is designed, by way of example, as a support section for supporting a workpiece. The support section is, for example, a support table and in particular has a support surface which is preferably oriented horizontally. The support section serves to support the workpiece during machining of the workpiece with a tool 4 of the tool device 1. The fixing section 3 is, for example, part of a support structure 2. By way of example, the fixing section 3, in particular the support section, is formed by the top surface of the support structure 2. In a state in which the tool device 1 is fixedly placed on a base, the fixing section 3 is advantageously fixed relative to the base.

[0012] The tool 4 is designed, for example, as a saw blade, in particular a circular saw blade. For example, a through-hole 6 is present in the support section, through which the tool 4 extends, in particular from the inside of the support structure 2 through the through-hole 6 to the outside of the support structure 2, for example upwards above the support section. The through-hole 6 is provided, for example, in the stop 11. The tool 4 is arranged in the region of the support section so that a workpiece placed on the support section can be processed with the tool 4.

[0013] The tool 4 advantageously defines a feed direction 10, along which a workpiece is moved onto the tool 4 (eg manually by a user) in order to machine the workpiece with the tool 4. The feed direction 10 advantageously extends parallel to the saw blade plane and / or parallel to the support surface. The feed direction 10 is oriented, for example, parallel to the x-direction.

[0014] The tool device 1 advantageously comprises an operating device 25, which is arranged, for example, on the outside of the support structure 2, in particular on the front side of the support structure 2. The operating device 25 preferably comprises an input unit 26 and / or a display unit 27. The input unit 26 can, for example, comprise a knob, in particular a turn-push-adjuster. The input unit 26 is particularly used to set a position, in particular an angular position, of the tool 4 relative to the fixing section 3, for example by inputting (by a user) a position value representing the position. The angular position, in particular the position value, is, for example, an inclination angle or a miter angle of the tool 4. The display unit 27 is designed, for example, as a graphic display and is particularly designed to display a position, for example a position value.

[0015] Figure 2 2 is a block diagram of a drive assembly 28 of a tool device 1. The drive assembly 28 comprises an operating device 25, a control unit 29, for example, designed as a microcontroller, a drive unit 15 and / or a drive device 30. The control unit 29 is advantageously connected to the operating device 25, the drive unit 15 and / or the drive device 30 in a communicative manner. The control unit 29 is advantageously designed to control the drive unit 15 and / or the drive device 30, in particular in accordance with an input by a user via the operating device. The control unit 29, the drive unit 15 and / or the drive device 30 are advantageously arranged in a housing of the tool device 1. The drive unit 15 advantageously comprises a first electric motor and is particularly used to put the tool 4 into a machining motion, in which a workpiece can be machined by the tool, for example sawing. The drive device 30 advantageously comprises a second electric motor and is particularly used to put the tool 4 into an adjustment motion 8, in order thereby to adjust the position, in particular the angular position, of the tool 4 relative to the fixing section 3.

[0016] The tool device 1 advantageously comprises an adjustment section 7 and / or a guide device 16 . Figure 3 The diagram shows a perspective view of an arrangement comprising the adjustment section 7, the guide device 16 and the drive device 30. By way of example, the adjustment section 7 is oriented with its longitudinal axis in the x-direction.

[0017] The adjustment section 7 advantageously comprises the tool 4. For example, the adjustment section 7 further comprises a riving knife 9, which is advantageously arranged behind the tool 4 in the feed direction 10. The adjustment section 7 advantageously further comprises a saw blade cover 12, which is particularly arranged below the stop 11 and serves to cover the part of the saw blade formed in the support structure 2. The saw blade cover 12 is, for example, a box for accommodating the saw blade. For example, the saw blade can be moved in the box in a vertical direction, in particular in the z direction, in order to adjust the height of the saw blade. For example, the adjustment section 7 further comprises a suction channel 13, which can advantageously be subjected to a negative pressure (for example by connecting the tool device 1 to a suction unit) in order to suck out particles generated by processing with the tool 4. The suction channel 13 is advantageously fluidically connected to the inner space of the saw blade cover 12 and is, for example, arranged at the bottom of the saw blade cover 12.

[0018] Preferably, the adjustment section 7 also includes a drive shaft 14 coupled to the tool 4, via which the tool 4 can be driven to perform a machining movement. The machining movement is, for example, a rotational movement about an axis of rotation extending perpendicularly to the feed direction 10, in particular the axis of rotation of the drive shaft 14. Preferably, the adjustment section 7 also includes a drive unit 15, which is used to put the tool 4 into a machining movement, in particular via the drive shaft 14.

[0019] The adjustment section 7 can be adjusted relative to the fixing section 3 when performing an adjustment movement 8 in order to adjust the position, in particular the angular position, of the tool 4 relative to the fixing section 3. Advantageously, the adjustment movement 8 can be used to adjust the tilt angle or miter angle of the tool 4. Preferably, during the adjustment movement 8 of the adjustment section 7, all components of the adjustment section 7, i.e. in particular the tool 4, the riving knife 9, the saw blade cover 12, the suction channel 13, the drive shaft 14 and / or the drive unit 15, perform the adjustment movement 8.

[0020] The adjustment movement 8 is advantageously a rotational movement, in particular a pivoting movement, preferably in the yz plane. The adjustment movement advantageously takes place about a (in particular virtual) pivot axis, which advantageously extends parallel to the feed direction 10. The pivot axis advantageously extends parallel to the saw blade plane and / or parallel to the support surface. Preferably, the (in particular virtual) pivot axis is oriented in the x direction. The term "virtual pivot axis" refers to an imaginary pivot axis. The pivot axis is advantageously defined by a guide device 16. The angular position to be set is in particular the angular position of the saw blade plane relative to the support surface.

[0021] The drive device 30 is designed as a linear drive, in particular a screw drive, for example. The drive device 30 is designed to be self-locking in particular. For example, the drive device 30 includes a rotary drive 31 (in particular the second motor mentioned above) and a screw 32, which can be driven by the rotary drive 31. The drive device 30 also includes a drive component 33, such as a screw nut, arranged on the screw 32. The drive component 33 is coupled to the adjustment section 7, in particular fixed to the adjustment section 7, so that the adjustment section 7 can be in the adjustment movement 8 by the movement (caused by the rotary drive 31), in particular the linear movement, of the drive component 33. The linear movement advantageously occurs in the yz plane. The rotary drive 31 is advantageously fixed to the fixed section 3.

[0022] Figure 4 It is a side view of the adjustment section 7 , the guide device 16 and the drive device 30 .

[0023] The guiding device 16 is designed to guide the adjustment section 7 relative to the fixed section 3 in the adjustment movement 8. The guiding device 16 comprises a guiding structure 18 defining a movement path 17. As an example, the movement path is arc-shaped. The guiding device 16 also comprises a guiding section 20 resting on a guiding profile 19 of the guiding structure 18, the guiding section 20 being movable along the movement path 17 relative to the guiding structure 18 for performing the adjustment movement 8. The movement path 17 is advantageously located in the yz plane; therefore, the movement path 17 advantageously has no x component. The movement path 17 is in particular defined by the guiding profile 19.

[0024] During the adjustment movement 8, the guide section 20 moves relative to the guide structure 18, specifically along the movement path 17. The guide section 20 preferably performs the adjustment movement 8. Preferably, the guide section 20 is part of the adjustment section 7 or is fixed to the adjustment section 7, so that the guide section 20 performs the adjustment movement 8 as part of the adjustment section 7 or together with the adjustment section 7. Preferably, the guide structure 18 is part of the fixing section 3 or is fixed to the fixing section 3, for example, the housing, in particular the outer housing, of the tool device 1. For example, the guide structure 18 is stationary relative to the fixing section 3 during the adjustment movement 8.

[0025] According to an alternative design (not shown in the figures), the guide structure is part of the adjustment section and the guide section is part of the fixed section. In this design, the guide section also moves relative to the guide structure along the movement path to perform the adjustment movement; in this case, the guide structure performs the adjustment movement 8 instead of the guide section.

[0026] The tool device 1 further comprises a clamping mechanism 21 having a spring element 22, which is designed, for example, as a helical spring. The clamping mechanism 21 is designed to press the guide section 20 against the guide structure 18 with a clamping force 24, based on a spring force 23 provided by the spring element 22, in order to advantageously reduce or eliminate the play between the guide section 20 and the guide structure 18 along the movement path 17, in particular during the adjustment movement 8 and / or during the machining movement, i.e. in particular during machining of a workpiece with the tool 4.

[0027] The play to be eliminated or reduced comprises in particular the play in the radial direction relative to the movement path 17. The radial direction is advantageously located in the yz plane and is oriented radially relative to the (in particular virtual) pivot axis of the adjustment movement 8. Advantageously, the radial direction intersects the (in particular virtual) pivot axis.

[0028] The clamping mechanism 21 is used in particular to ensure that the guide section 20 rests against the guide structure 18, in particular the guide profile 19, along the movement path 17, in particular along the entire movement path 17, in particular permanently, preferably with a constant friction force. The clamping mechanism 21 is preferably implemented so that the guide section 20 rests against the guide structure 18 permanently at any possible position along the entire movement path 17, so that there is no gap between the guide section 20 and the guide structure 18, in particular in the radial direction relative to the movement path 17. Preferably, the clamping force 24 is oriented in the radial direction relative to the adjustment movement 8 and / or the movement path 17. For example, the clamping force 24 is oriented in the radial direction away from the (in particular virtual) pivot axis of the adjustment movement 8. The clamping force 24 is oriented in particular perpendicular to the pivot axis and / or the feed direction 10. The direction of the clamping force 24 is advantageously in the same plane as the adjustment movement 8.

[0029] The pressing mechanism 21 is preferably designed to press the guide section 20 against the guide structure 18 with a pressing force 24 along the entire movement path 17, so as to reduce or eliminate the gap between the guide section 20 and the guide structure 18 along the entire movement path 17. The maximum achievable movement path 17 of the guide section 20 relative to the guide structure 18 shall be referred to as the entire movement path 17. The pressing mechanism 21 is preferably designed to provide a substantially constant pressing force 24 along the movement path 17, in particular the entire movement path 17.

[0030] For example, the guide structure 18 comprises a plate-shaped section, which is advantageously oriented with its plate plane perpendicular to the x-direction, i.e., for example, perpendicular to the (in particular virtual) pivot axis of the adjustment movement 8) and / or perpendicular to the feed direction 10. For example, the guide structure 18, in particular the plate-shaped section, comprises a recess 35, in particular in the form of an arc of a circle. The guide section 20 is advantageously guided in the recess 35. The recess 35 has an inner edge and / or an inner surface, in particular a lower inner edge and / or a lower inner surface, which advantageously forms a guide contour 19, against which the guide section 20 is pressed by the contact force 24.

[0031] Preferably, the pressing mechanism 21 comprises a pressing section 34, which abuts against a corresponding contour 36 of the guide structure 18. The corresponding contour 36 is advantageously formed by the outer edge and / or outer surface, in particular the lower outer edge and / or the lower outer surface, of the guide structure 18, in particular the plate-shaped section. The corresponding contour 36 is advantageously arc-shaped and in particular concentric with the guide contour 19. The pressing section 34 is pressed against the corresponding contour 36 by the reaction force 42 caused by the spring force 23.

[0032] The guide structure 18 comprises a particularly arc-shaped structure section 37 having a guide contour 19 and / or a counter contour 36. By way of example, the guide contour 19 is arranged on a first side (e.g. the upper side) of the structure section 37 and the counter contour 36 is arranged on a second side (e.g. the lower side) of the structure section 37 opposite the first side.

[0033] The pressing section 34 is elastically coupled to the guide section 20 via the spring element 22, so that due to the spring force 23 the pressing section 34 is pressed against the counter contour 36 and the guide section 20 (due to the spring force 23) is pressed against the guide contour 19. The spring force 23 advantageously causes the structural section 37 to be clamped between the guide section 20 and the pressing section 34, in particular in the radial direction with respect to the adjustment movement 8. The guide section 20 and the pressing section 34 are pressed against each other by the spring force 23, so that they are respectively pressed against the structural section 37 located between the guide section 20 and the pressing section 34. Preferably, the pressing section 34 is pressed against the guide contour 19 in a preloaded manner by the spring element 22, whereby the guide section 20 is pressed against the counter contour 36 in a preloaded manner.

[0034] For example, the clamping mechanism 21 includes a clamping assembly 38, which includes a clamping section 34. The spring component 22 is arranged between the support section 39 of the clamping assembly 38 and the support point of the coupling section 40. In particular, one end of the spring component 22 is supported on the support section 39 and the other end is supported on the support point, so that the spring component 22 uses its spring force 23 to push the support section 39 and the support point away from each other, especially in opposite directions. The coupling section 40 is connected to the guide section 20. The coupling section 40 is preferably part of the adjustment section 7. The guide section 20 is advantageously pressed against the guide structure 18, in particular against the guide profile 19, by the spring force 23 via the coupling section 40.

[0035] For example, the spring component 22 is arranged on the second side, i.e., the lower side, of the structural section 37. The guide section 20 is arranged, for example, on the first side, i.e., the upper side, of the structural section 37. The coupling section 40 extends from the spring component 22, in particular from the end of the spring component 22 facing away from the structural section 37, toward the guide section 20, in particular vertically upwards, preferably passing through the structural section 37, in particular passing through the structural section 37 in a horizontally offset manner.

[0036] Preferably, the pressing assembly 38, in particular the pressing section 34, has a roller 41, which rests on the corresponding contour 36 and can roll thereon. For example, the pressing section 34 is designed as a roller 41. The roller 41 rolls on the corresponding contour 36 during the adjustment movement 8. The roller 41 is pressed against the corresponding contour 36 by a reaction force 42. The roller 41 comprises, for example, a ball bearing and / or is rotatably mounted via a ball bearing, for example, on a lever component 43 of the pressing assembly 38.

[0037] Optionally, the pressing assembly, in particular the pressing section, comprises at least one scraping section (not shown in the figure) which bears against the corresponding contour in order to remove dirt from the corresponding contour. For example, the scraping section can be arranged in front of and behind the roller (in the direction of the movement path), in particular on a lever part of the pressing assembly. During the adjustment movement, the scraping section keeps the rolling surface of the corresponding contour free of dirt (e.g. sawdust). In this way, the smoothness of the angle adjustment, i.e. the smoothness of the adjustment section 7 during the adjustment movement 8, can be improved.

[0038] The clamping mechanism 21, in particular the clamping assembly 38, preferably has a lever part 43, through which the spring force 23 is converted into a clamping force 24, specifically, so that the clamping force 24 is greater than the spring force 23 in terms of magnitude. For example, the lever part 43 includes a support section 39. The clamping section 34 is advantageously arranged on the lever part 43. Alternatively, the clamping section can be part of the lever part. For example, the roller 41 is rotatably mounted on the lever part 43. The lever part 43 is advantageously pivotably mounted on the coupling section 40, in particular pivotably around a lever part-pivot axis oriented parallel to the x-direction.

[0039] For example, the pressing section 34 is coupled to the spring element 22 via a lever element 43. The lever element 43 is a physical lever, the pivot point of which is formed by mounting the lever element 43 on the coupling section, and which advantageously converts the spring force 23 into the reaction force 42. By way of example, the lever element 43 is a one-sided lever, so that the spring force 23 and the reaction force 42 are located on the same side of the pivot point of the lever element 43. The reaction force 42 is advantageously arranged closer to the pivot point than the spring force 23. By means of the lever provided by the lever element 43, the spring force 23 is converted into the reaction force 42, so that the reaction force 42 is greater than the spring force 23 in terms of magnitude.

[0040] By coupling the pressing section 34 to the guide section 20 (eg via the lever element 43 , the spring element 22 and the coupling section 40 ), the increased reaction force 42 leads to an increase in the pressing force 24 , so that an increased pressing force 24 (compared to the spring force 23 ) is also generated by the lever element 43 .

[0041] Advantageously, the prestressing of the spring element 22 is independent of the position, in particular the angular position, of the tool 4 , so that the friction force between the guide section 20 and the guide contour 19 is preferably constant.

[0042] Preferably, the clamping mechanism 21 is part of the adjustment section 7 and accordingly performs the adjustment movement 8 as part of the adjustment section 7. In particular, the guide section 20, the coupling section 40, the spring element 22, the lever element and / or the roller 41 perform the adjustment movement 8 together with the tool 4 (in the adjustment movement 8 of the adjustment section 7).

[0043] The drive device 30 is designed to drive the adjustment section 7 relative to the fixed section 3 so that the adjustment section 7 is in the adjustment movement 8. The drive device 30 is preferably designed to fix the adjustment section 7 in a fixed state relative to the fixed section 3, so that the guide section 20 is fixed relative to the guide structure 18 in the direction of the movement path 17. The fixed state is advantageously always present when the adjustment section 7 is not driven (in the direction of the movement path 17) by the drive device 30. The drive device 30 is advantageously designed to be self-locking, so that when the drive device 30 does not provide a drive (in the direction of the movement path 17) for the adjustment section 7, the adjustment section 7 is always automatically fixed relative to the fixed section (in the direction of the movement path 17) by the drive device 30.

[0044] In addition to or instead of the drive device 30, the tool device 1 can have a particularly manually operable, preferably non-electrical mechanism for adjusting the position, particularly the angular position, of the tool 4. For example, the adjustment section 7 can be moved by manual operation to perform the adjustment movement 8.

[0045] Preferably, in the fixed state, there is no fixing of the guide segment 20 relative to the guide structure 18 by a friction fit between the guide segment 20 and the guide structure 18 in the direction of the movement path 17. This should mean that the fixing of the guide segment 20 provided in the fixed state is not caused by a friction fit between the guide segment 20 and the guide structure 18. Instead, as described above, this fixing is achieved by the drive device 30, in particular the self-locking design of the drive device 30. Advantageously, in the fixed state, the drive device 30 provides a fixing force for fixing the guide segment 20 relative to the guide structure 18, which fixing force is many times greater than the friction force existing between the guide segment 20 and the guide structure 18 in the fixed state.

[0046] Figure 5 An exemplary design of a guide segment 20 is shown. As an example, the guide segment 20 is designed in one piece. The guide segment 20 is made of polyoxymethylene and polytetrafluoroethylene with aramid fibers, for example. Good sliding properties and low wear can be achieved with this material. The guide segment 20 advantageously comprises a guide segment body 44 of exemplary plate-shaped design, which is preferably oriented with its plate plane perpendicular to the x-direction. Preferably, the guide segment body 44 is curved so that its basic shape is in the shape of a circular arc. The curvature of the guide segment body 44 advantageously equals the curvature of the movement path 17.

[0047] The guide section 20 preferably has a first contact projection 45 and a second contact projection 46 spaced apart from the first contact projection 45. The distance between the two contact projections 45, 46 in the longitudinal direction of the guide section 20 and / or in the direction of the movement path 17 is advantageously greater than 30%, 40% or 50% of the extension length of the guide section 20 in the longitudinal direction and / or in the direction of the movement path 17.

[0048] By way of example, the first contact projection 45 and the second contact projection 46 protrude perpendicularly from the plate plane of the guide section body 44, for example, in the negative x direction. The first contact projection 45 and the second contact projection 46 each advantageously have a basic shape of a cuboid. The first contact projection 45 and the second contact projection 46 have respective contact surfaces 47, which rest against the guide profile 19 with their contact surfaces. The contact surface 47 is advantageously curved according to the guide profile 19. The normal of the contact surface 47 is radially oriented relative to the pivot axis line. One contact surface 47 is advantageously arranged at a first end of the guide section 20, and the other contact surface 47 is arranged at the other end of the guide section 20.

[0049] The guide section 20 advantageously bears against the guide contour 19 via the first contact projection 45 and the second contact projection 46, in particular only via the first contact projection 45 and the second contact projection 46. Preferably, the contact surface 47 forms the position of the guide section 20 closest to the guide contour 19 in the common x-region of the guide section 20 and the guide contour 19. Advantageously, the guide section 20 contacts the guide contour 19 only with the contact surface 47. Entirely optionally, the contact projections 45, 46 are connected to one another via a connecting structure 48. The connecting structure 48 is curved according to the curvature of the movement path 17. The connecting structure 48 does not bear against the guide contour 19. By way of example, the connecting structure 49 has two connecting webs 49 extending parallel to one another, which are advantageously designed in the shape of a circular arc, in particular curved.

[0050] The pressing section 34 is preferably arranged between the first contact projection 45 and the second contact projection 46 in the direction of the movement path 17 (in particular in the middle). Figure 4 . In this way, a uniform load can be achieved on the two contact surfaces 47. The guide section 20 is pressed against the counter contour 36 with preload by the spring-preloaded pressing section 34, so that the guide section 20 rests with its two contact surfaces 47 on the guide contour 19 and is pressed against the guide contour 19 with a constant preload force, that is, a pressing force 24, which is independent of the angular position of the tool 4.

[0051] Figure 6 and Figure 7An exemplary design of a clamping assembly 38 is shown. The clamping assembly 38 comprises a lever component 43 and a roller 41. The lever component 43 is elongated and, for example, oriented with its longitudinal axis substantially in the y direction. The lever component 43 has a main section 50 of elongated design. At a first end in the longitudinal direction of the lever component 43, the lever component 43 has a support section 39 for supporting the spring component 22. The support section 39 has a pin 51 protruding from the main section 50, onto which the spring component 22 is placed (e.g., as Figure 4 ). The pin 51 protrudes from the main section 50, for example, in the negative z-direction. At the second end of the lever part 43 in the longitudinal direction, the lever part 43 has a pivot axis section 52, via which the lever part 43 is pivotably mounted on the coupling section 40 and is advantageously designed to be cylindrical. The pivot axis section 52 protrudes from the main section 50, for example, in the positive x-direction.

[0052] Figure 7 The pressing assembly 38 is shown without the roller 41. By way of example, the lever component 43 has a rotation axis section 53 on which the roller 41 is rotatably mounted. The rotation axis section 53 protrudes from the main section 50, in particular in the opposite direction to the pivot axis section 52, for example in the negative x-direction. By way of example, the rotation axis section 53 and the pivot axis section 52 are arranged on opposite sides of the main section 50. In the longitudinal direction of the lever component 43, the rotation axis section 53 is advantageously arranged between the support section 39 and the pivot axis section 52, preferably closer to the pivot axis section 52 in the longitudinal direction than the support section 39, for example (in the longitudinal direction) directly adjacent to the pivot axis section 52.

[0053] The guide device 16 may also be referred to as a first guide device, the guide structure 18 may be referred to as a first guide structure, the movement path 17 may be referred to as a first movement path, and the guide section 20 may be referred to as a first guide section.

[0054] The tool device 1 advantageously also has a second guide device 16 . 2 . Figure 8 An exemplary design of the second guide device 16 . 2 is shown.

[0055] For example, the first guide device 16 and the second guide device 16 . 2 are arranged spaced apart from each other in the x-direction. Advantageously, a respective guide device 16 , 16 . 2 is arranged at each end in the longitudinal direction of the adjustment section 7 .

[0056] The second guide device 16.2 is preferably designed similarly to the first guide device 16, so that the above explanations related to the first guide device 16 advantageously apply correspondingly to the second guide device 16.2. The components explained below of the second guide device 16.2 are advantageously designed similarly to the corresponding components explained above of the first guide device 16.2.

[0057] The second guide device 16.2 comprises a second guide structure 18.2 defining a second movement path 17.2 and a second guide section 20.2 resting on a second guide contour 19.2 of the second guide structure 18.2, the second guide section 20.2 being movable relative to the second guide structure 18.2 along the second movement path 17.2 to perform the transposing movement 8. The second movement path 17.2 preferably extends parallel to the first movement path 17. By way of example, the second guide structure 18.2 has a second structure section 37.2 defining a second corresponding contour 36.2.

[0058] The above-mentioned pressing mechanism 21 may also be referred to as a first pressing mechanism, the spring component 22 may be referred to as a first spring component, the spring force 23 may be referred to as a first spring force, and the pressing force 24 may be referred to as a first pressing force.

[0059] The tool device 1 advantageously also has a second clamping device 21 . 2 . Figure 8 An exemplary design of the second clamping mechanism 21 . 2 is shown.

[0060] For example, the first pressing means 21 and the second pressing means 21 . 2 are arranged spaced apart from each other in the x-direction. Advantageously, a respective pressing means 21 , 21 . 2 is arranged at each end in the longitudinal direction of the adjustment section 7 .

[0061] The second clamping mechanism 21.2 is preferably designed similarly to the first clamping mechanism 21, except for the differences explained below, so that the above explanations about the first clamping mechanism 21 are advantageously applicable to the second clamping mechanism 21.2 accordingly. Advantageously, the components explained below of the second clamping mechanism 21.2 are designed similarly to the corresponding components explained above of the first clamping mechanism 21.

[0062] The second clamping mechanism 21.2 comprises a second spring component 22.2 and is designed to press the second guide section 20.2 against the second guide structure 18.2 with a second clamping force 24.2 based on a second spring force 23.2 provided by the second spring component 22.2, so as to reduce or eliminate the gap between the second guide section 20.2 and the second guide structure 18.2 along the second motion path 17.2, especially in the radial direction relative to the (especially virtual) pivot axis of the adjustment movement 8. The second spring component 22.2 is coupled to the second guide section 20.2, for example, via a second coupling section 40.2. The second clamping mechanism 21.2, for example, has a second clamping section 34.2, which is, for example, designed as a second roller 41.2 and rests against the second corresponding contour 36.2. The second clamping section 34.2 is pressed against the second corresponding contour 36.2 using a second reaction force 42.2 caused by the second spring force 23.2.

[0063] The second clamping mechanism 21.2 differs from the first clamping mechanism 21, for example, in that the second spring force 23.2 is oriented in a different direction than the first spring force 23. For example, the second spring force 23.2 is oriented orthogonally to the first spring force 23. Preferably, the first spring force 23 is oriented parallel to the saw blade plane, and / or the second spring force 23.2 is oriented perpendicular to the saw blade plane. The second clamping mechanism 21.2 preferably comprises a second clamping assembly 38.2 having a second lever part 43.2, which is advantageously oriented with its longitudinal axis perpendicular to the longitudinal axis of the first lever part 43.2.

[0064] Both the first pressing force 24 and the second pressing force 24.2 are advantageously oriented in a radial direction relative to the (in particular virtual) pivot axis of the adjustment movement 8. Furthermore, both the first reaction force 42 and the second reaction force 42.2 are advantageously oriented in a radial direction relative to the (in particular virtual) pivot axis of the adjustment movement 8. Advantageously, both the first reaction force 42 and the second reaction force 42.2 are oriented in the same direction and / or in the same radial plane passing through the (in particular virtual) pivot axis, e.g. Figure 4 and Figure 8 The comparison is shown.

[0065] Alternatively, the second clamping means 21 . 2 can also be designed identically to the first clamping means 21 , or designed in a mirror-image manner (particularly in the yz mirror plane) to the first clamping means 21 .

[0066] The method for operating the tool device 1 will be described below. Optionally, the method begins with the user bringing the tool device 1 to the place of use and placing it on the ground there. The user then advantageously inputs the desired position of the tool 4 relative to the fixing section 3, in particular the desired angular position, via the operating device 25. The tool device 1 then sets the position of the tool 4 according to the position input by the user. For this purpose, the tool device 1 performs an adjustment movement 8. By means of the clamping mechanism 21 (and the optionally present second clamping mechanism 21.2), the tool 4 is always placed without play relative to the fixing section 3 in the radial direction, in particular relative to the (in particular virtual) pivot axis, about which the adjustment movement 8 takes place, i.e. in particular before, during and after the adjustment movement 8. The user advantageously activates the drive unit 15 (for example by actuating an on switch of the tool device 1) in order to cause the tool 4 to be in a machining movement. The user places the workpiece on the support surface and moves the workpiece in the feed direction 10 to the tool 4 in order to machine the workpiece with the tool 4, to be precise, in a previously set position, in particular a previously set angular position. By means of the clamping mechanism 21 (and the second clamping mechanism 21.2, which is optionally present), the tool 4 is positioned without play relative to the fixing section 3, even during workpiece processing, in particular in the radial direction relative to the (in particular virtual) pivot axis of the adjustment movement 8. Therefore, after the adjustment movement 8 has been completed and / or before the workpiece is processed, the user does not have to perform any separate user action (for example, triggering the clamping mechanism) in order to fix the adjustment section 7 relative to the fixing section 3 and / or to achieve a free play position; advantageously, the user does not perform any such separate user action between the completion of the adjustment movement 8 and the start of the workpiece processing. The fixing of the adjustment section 7 is automatically achieved by the self-locking drive 30, and the free play position is automatically achieved by the first and / or second clamping mechanism 21, 21.2, so that no user action is necessary and does not occur for this.

Claims

1. A tool device (1), in particular a sawing device, comprising: A fixing section (3), in particular a supporting section for supporting a workpiece; and an adjustment section (7) having a tool (4), in particular a saw blade, which can be adjusted relative to the fixed section (3) when performing an adjustment movement (8) in order to adjust the position, in particular the angular position, of the tool (4) relative to the fixed section (3); A guiding device (16) is designed to guide the adjustment section (7) during the adjustment movement relative to the fixed section (3), wherein the guiding device (16) comprises a guiding structure (18) defining a movement path (17) and a guiding section (20) abutting against a guiding contour (19) of the guiding structure (18), the guiding section being movable along the movement path (17) relative to the guiding structure (18) to perform the adjustment movement (8), characterized in that the tool device comprises a clamping mechanism (21) having a spring component (22), the clamping mechanism being designed to press the guiding section (20) against the guiding structure (18) using a clamping force (24) based on a spring force (23) provided by the spring component (22) so as to thereby reduce or eliminate a gap between the guiding section (20) and the guiding structure (18) along the movement path (17).

2. The tool device according to claim 1, wherein: The adjustment movement is a rotational movement and / or the movement path is arc-shaped.

3. The tool device (1) according to claim 1 or 2, wherein: The contact pressure force (24) is oriented radially relative to the adjustment movement (8) and / or the movement path (17).

4. The tool device (1) according to the preceding claim, wherein: The clamping mechanism (21) is designed to press the guide section (20) against the guide structure (18) along the entire movement path (17) using the clamping force (24) so ​​as to reduce or eliminate the gap between the guide section (20) and the guide structure (18) along the entire movement path (17).

5. The tool device (1) according to the preceding claim, wherein: The pressing mechanism (21) is designed to provide the pressing force (24) as a substantially constant pressing force along the movement path (17).

6. The tool device (1) according to the preceding claim, wherein: The clamping mechanism (21) comprises a clamping section (34), which abuts against a corresponding contour (36) of the guide structure (18) and is elastically coupled to the guide section (20) via the spring component (22), so that the clamping section (34) is pressed against the corresponding contour (36) due to the spring force (23), and the guide section (20) is pressed against the guide contour (19).

7. The tool device (1) according to claim 6, wherein: The guide contour (19) is arranged on a first side of a structure section (37) of the guide structure (18), and the counter contour (36) is arranged on a second side of the structure section (37) opposite the first side.

8. The tool device (1) according to claim 6 or 7, wherein: The pressure section (34) has a roller (41) which bears against the counter contour (36) and can roll on the counter contour.

9. The tool device according to claim 8, wherein: The pressing section comprises at least one scraping section which bears against the corresponding contour in order to remove dirt from the corresponding contour.

10. The tool device (1) according to the preceding claim, wherein: The pressing mechanism (21) has a lever component (43) through which the spring force (23) is converted into the pressing force (24), specifically, so that the pressing force (24) is greater than the spring force (23).

11. The tool device (1) according to claim 10 in combination with any one of claims 6 to 9, wherein: The pressure section (34) is coupled to the spring element (22) via the lever element (43).

12. The tool device (1) according to the preceding claim, wherein: The guide section (20) has a first contact projection (45) and a second contact projection (46) spaced apart from the first contact projection (45), and rests against the guide contour (19) with the first contact projection (45) and the second contact projection (46).

13. The tool device (1) according to claim 12 in combination with any one of claims 6 to 9, wherein: The pressing section (34) is arranged between the first contact projection (45) and the second contact projection (46) in the direction of the movement path (17).

14. The tool device (1) according to the preceding claim comprises a drive device (30), which is designed to drive the displacement section (7) relative to the fixed section (3) so that the displacement section (7) is in the displacement movement (8), and the drive device is also designed to fix the displacement section (7) in a fixed state relative to the fixed section (3), so that the guide section (20) is fixed relative to the guide structure (18) in the direction of the movement path (17).

15. The tool device (1) according to claim 14, wherein: In the fixed state, the guide section (20) is fixed relative to the guide structure (18) in the direction of the movement path (17) not by a friction fit between the guide section (20) and the guide structure (18).

16. The tool device (1) according to the preceding claim, wherein: The guide device (16) is a first guide device, the guide structure (18) is a first guide structure, the movement path (17) is a first movement path, and the guide section (20) is a first guide section, and wherein the tool device (1) further comprises a second guide device (16.2) spaced apart from the first guide device (16), the second guide device comprising a second guide structure (18.2) defining a second movement path (17.2) and a second guide section (20.2) abutting against a second guide contour (19.2) of the second guide structure (18.2), the second guide section being movable along the second movement path (17.2) relative to the second guide structure (18.2) to perform the adjustment movement (8), In the embodiment of the present invention, the clamping mechanism (21) is a first clamping mechanism, the spring component (22) is a first spring component, the spring force (23) is a first spring force, and the clamping force (24) is a first clamping force, and wherein the tool device (1) further comprises a second clamping mechanism (21.2) having a second spring component (22.2), the second clamping mechanism being designed to press the second guide section (20.2) against the second guide structure (18.2) by means of a second clamping force (24.2) based on a second spring force (23.2) provided by the second spring component (22.2), so as to reduce or eliminate a gap between the second guide section (20.2) and the second guide structure (18.2) along the second movement path (17.2).

17. The tool device (1) according to claim 16, wherein: The second movement path (17.2) extends parallel to the first movement path (17).

18. The tool device (1) according to claim 16 or 17, wherein: The second spring force (23.2) is oriented in a different direction than the first spring force (23), wherein the first pressing force (24) and the second pressing force are advantageously oriented radially relative to the adjustment movement (8) and / or the movement path (17).

19. A method for operating a tool device (1) according to any one of claims 1 to 18, comprising the following steps: The transposing movement (8) is performed.

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