Hand-held power tool with height adjustment device

Abstract

The invention relates to a hand-held power tool, in particular a planer, having a housing in which a drive unit for driving an insert tool (145) is arranged; a height-adjustable base plate (150) on the housing for guiding the hand-held power tool on a workpiece surface, wherein the base plate (150) has a slot (152) through which the insert tool (145) engages at least sectionally; and a height adjustment device (175) for adjusting the working height of the base plate (150) on the housing (105) relative to the insert tool (145), an adjustment aid (200) being provided which enables a height adjustment of the underside (157) of the base plate (150) relative to a predefined cutting edge (321) of the insert tool (145) by means of the height adjustment device (175).

Description

Technical Field

[0001] This invention relates to a handheld machine tool, particularly a grooving planer. It has a housing in which a drive unit for driving an insert tool is arranged; a height-adjustable base plate on the housing for guiding a handheld machine tool on a workpiece surface, wherein the base plate has a slot through which the insert tool engages at least partially; and a height adjustment device for adjusting the working height of the base plate on the housing relative to the insert tool. Background Technology

[0002] As known from the prior art, this type of handheld machine tool, constructed as a grooving machine, has a height adjustment device for an insert tool. The height adjustment of the insert tool is achieved using a so-called sacrificial lumber, by which the insert tool is positioned or adjusted at a suitable height relative to the surface to be machined through multiple adjustment steps. In particular, the rounding cutter must be precisely adjusted so that a rounding with a predetermined radius can be milled completely and preferably without shoulders on the edges of the workpiece.

[0003] When using sacrificial lumber as a substitute, the working height of the insert tool can be adjusted using a straight object, such as a square or ruler, with the cutting edge of the insert tool feeling the surface. The height of the insert tool is adjusted through multiple steps. The height of the insert tool is repeatedly adjusted, checked with an aid (e.g., a ruler), readjusted, or adapted and checked again. This process is repeated until the set working height is achieved, typically until the cutting edge of the insert tool rests against the aid. Summary of the Invention

[0004] This invention relates to a handheld machine tool, particularly a grooving planer, comprising a housing in which a drive unit for driving an insert tool is arranged; a height-adjustable base plate on the housing for guiding the handheld machine tool on a workpiece surface, wherein the base plate has a slot through which the insert tool engages at least partially; and a height adjustment device for adjusting the working height of the base plate on the housing relative to the insert tool. An adjustment auxiliary device is provided, which enables height adjustment of the lower side of the base plate relative to a predetermined cutting edge alignment of the insert tool via the height adjustment device.

[0005] Therefore, the present invention can provide a handheld machine tool, especially a grooving machine, wherein the height adjustment device can be simplified and thus the working height can be quickly and accurately adjusted by adjusting the auxiliary device.

[0006] Preferably, the adjustment auxiliary device is rectangular or block-shaped.

[0007] Therefore, a simple and uncomplicated adjustment aid can be provided, which can be arranged aligned with the underside of the substrate.

[0008] The adjustment auxiliary device is preferably arranged on the underside of the substrate, at least in the adjustment position.

[0009] Therefore, it is possible to safely and reliably arrange adjustment auxiliary devices for precise adjustment of the height adjustment device.

[0010] According to one embodiment, the adjustment auxiliary device has a fixed section, and a receiving portion is provided on the lower side of the substrate, wherein the fixed section is arranged in the receiving portion in the adjustment position, preferably locked or press-fitted.

[0011] Therefore, the adjustment aid can be simply and robustly arranged on the underside of the height adjustment device's base plate, or in the adjustment position. Furthermore, by allowing the user of a handheld machine tool to fix the adjustment aid to the underside of the base plate, the use of additional fixing elements, such as screw clamps, can be eliminated.

[0012] Preferably, the adjustment auxiliary device is pivotally arranged on the underside of the substrate via a fixed section.

[0013] Therefore, the adjustment aid can be easily and uncomplicatedly positioned in the area of ​​the insert tool for adjusting the height of the substrate alignment.

[0014] The substrate preferably has a receiving portion on its upper side for receiving the fixed section in the rest position of the adjustment auxiliary device, so that the adjustment auxiliary device can be arranged on the upper side in the rest position.

[0015] Therefore, the adjustment device can be safely and reliably stored during operation of a handheld machine tool when no adjustment auxiliary device is required.

[0016] According to one embodiment, the substrate has a slot on its underside for arranging the adjustment aid in an adjustment position and a rest position.

[0017] Therefore, the adjustment auxiliary device can be arranged on the substrate in a simple way, wherein the adjustment auxiliary device is permanently stored on the underside of the substrate, and thus the manual arrangement of the adjustment auxiliary device separately on the underside of the substrate can be eliminated after user use.

[0018] The slot preferably has a guide rail, and the adjustment auxiliary device preferably has at least two lateral guide pins for guiding in the guide rail.

[0019] Therefore, the adjustment auxiliary device can be safely and steadily moved from the stationary position to the adjustment position, and vice versa.

[0020] Preferably, the adjustment aid is arranged on the underside of the substrate with its surface facing the insertion tool in the adjustment position, and on the underside of the substrate with its surface facing away from the insertion tool in the rest position.

[0021] Therefore, the height of the substrate can be adjusted in a simple manner in the adjustment position, and the workpiece surface can be processed in the stationary position of the adjustment auxiliary device.

[0022] Preferably, the adjustment auxiliary device is constructed in the form of a slider that can be sunkenly arranged on the substrate.

[0023] Therefore, the adjustment auxiliary device can be safely and reliably arranged on the side under the substrate in a stationary position. Attached Figure Description

[0024] The invention is described in more detail below with reference to embodiments shown in the accompanying drawings. The drawings illustrate:

[0025] Figure 1 A perspective view of a handheld machine tool having a substrate and a height adjustment device for the substrate.

[0026] Figure 2 : having in a stationary position Figure 1 An enlarged view of a handheld machine tool with a base plate and adjustment auxiliary device.

[0027] Figure 3 Viewed from below Figure 1 and Figure 2 Substrate and arranged on the substrate Figure 2 An enlarged view of the adjustment auxiliary device.

[0028] Figure 4 In the adjustment position Figure 3 substrate and Figure 2 and Figure 3 An enlarged view of the adjustment auxiliary device.

[0029] Figure 5 Substrate and Figure 3 A cross-sectional view of the adjustment aid device, wherein the substrate is arranged in a first position relative to the insertion tool.

[0030] Figure 6 Substrate and Figure 4 A cross-sectional view of the adjustment aid device, wherein the substrate is arranged in a second position relative to the insertion tool.

[0031] Figure 7 Viewed from below in the adjusted position Figure 1A perspective view of the substrate and the alternative adjustment aid, and

[0032] Figure 8 Substrate and Figure 7 An enlarged view of the adjustment auxiliary device.

[0033] In the accompanying drawings, elements that are the same or similar are given the same reference numerals and are described only once in more detail. Detailed Implementation

[0034] Figure 1 A handheld power tool 100 is shown, which is configured, for example, as a grooving machine. The handheld power tool 100 includes a housing 105 having a first housing section 115 and a second housing section 116. A drive unit 120 is preferably arranged in the housing 105 for driving a tool receiving section 140. The tool receiving section 140 is configured to receive an insert tool 145. The insert tool 145 is preferably configured as a milling tool, particularly as an edge milling cutter and / or a rounding milling cutter. Preferably, the drive unit 120 is equipped with at least one drive motor 125. According to one embodiment, the drive motor 125 is an electronically commutated motor.

[0035] Preferably, the drive unit 120 is arranged in the first housing section 115. Here, the first housing section 115 is preferably configured as a hand rest surface. A battery pack 190 is preferably arranged at least sectionally in the second housing section 116, wherein the battery pack 190 is configured to power the handheld power tool 100. However, it should be noted that the handheld power tool 100 can also operate via a wired power source, such as through the power grid. Housing sections 115 and 116 are preferably integrally constructed with each other.

[0036] Furthermore, the handheld tool 100 preferably has a base plate 150 for guiding the handheld tool 100 on the surface of a workpiece. Preferably, the base plate 150 has a slot 152 through which an insert tool 145 engages, at least in sections.

[0037] As illustrated, the handheld power tool 100 has a height adjustment device 175. The height adjustment device 175 is preferably configured to adjust the working height of the base plate 150 relative to the insert tool 145 on the housing 105. The height adjustment device 175, for example, has an operating element 170. The operating element 170 is preferably cylindrical and rotatable in a circumferential direction 103 for adjusting the desired height of the base plate 150. By rotating the operating element 170 in the circumferential direction 103, the base plate 150 preferably moves along arrow 102 or in a vertical direction. Such a height adjustment device 175 is well known in the prior art, and therefore a detailed description is omitted here for the sake of simplicity and brevity of the invention.

[0038] The substrate 150 schematically has an upper side 156 facing the drive unit 120 and a lower side 157 facing away from the drive unit 120. According to one embodiment, an adjustment auxiliary device is provided. Figure 2 (200 in the text), this adjustment aid can adjust the height of the lower side 157 of the substrate 150 relative to the insertion tool 145 via the height adjustment device 175. Adjustment aid ( Figure 2 The 200 in this context is preferably positioned in the adjustment position. Figure 4 In (410), the height adjustment device 175 performs height adjustment and is arranged in a stationary position. Figure 2 In 210), the handheld machine tool 100 does not have an adjustment auxiliary device. Figure 2 The working process of the adjustment auxiliary device (200) is described. According to one embodiment, the substrate 150 has a receiving portion 160 on its upper side 156 for receiving the adjustment auxiliary device (…). Figure 2 (200) at least segmentally received in the stationary position ( Figure 2 In 210).

[0039] Figure 2 Showing has Figure 1 The handheld machine tool 100 with substrate 150. (As in...) Figure 1 As described in the text, according to one embodiment, an adjustment auxiliary device 200 is provided, which can be adjusted by... Figure 1 The height adjustment device 175 achieves a pre-defined cutting edge for the lower side 157 of the substrate 157 relative to the insertion tool 145. Figure 3 (321) Alignment height adjustment. Preferably, the adjustment auxiliary device 200 is constructed in the shape of a cuboid or a block.

[0040] exist Figure 2 In this configuration, the adjustment assist device 200 is arranged in the rest position 210. According to one embodiment, the adjustment assist device 200 is fixed in the rest position 210, for example, in the receiving portion 160 on the upper side 156 of the substrate 150. Here, the adjustment assist device 200 is preferably fixed via a fixed section (…). Figure 3 (310) is fixed and is used to be arranged in the receiving part 160 in the rest position 210.

[0041] However, it should be noted that the receiving unit 160 for arranging the adjustment auxiliary device 200 in the rest position 210 can also be arranged in any other position other than the positions shown on the handheld machine tool 100, housing 105, and / or base plate 150. Furthermore, multiple receiving units 160 can be provided.

[0042] Figure 3 Show Figure 1 and Figure 2The substrate 150 is viewed from its lower side 157. Here, Figure 3 The arrangement of an insert tool 145, configured as a milling tool, particularly a rounding milling cutter, in a slot 152 of a substrate 150 is visually illustrated. The handheld tool 100 is preferably configured for milling slots, and more preferably for edge milling. Here, the insert tool 145 preferably has a cutting profile 324, which schematically connects the upper cutting edge 322 and the lower cutting edge 321.

[0043] also, Figure 3 The adjustment aid 200 is illustrated, having at least one fixed section 310 for mounting on the base plate 150. The fixed section 310 is arranged at the axial end of the adjustment aid 200. Preferably, the fixed section 310 is constructed vertically, or along a transverse direction 398 relative to the longitudinal extension 399 of the adjustment aid 200. Preferably, the fixed section 310 is cylindrical. However, it should be noted that the fixed section 310 may also be arranged spaced apart from the axial end of the adjustment aid 200.

[0044] Preferably, the adjustment auxiliary device 200 is in at least one adjustment position ( Figure 4 The adjustment auxiliary device 200 is arranged on the lower side 157 of the substrate 150 in the 410). This is to allow the adjustment auxiliary device 200 to be in the adjustment position ( Figure 4 The receiving portion 360 is arranged on the lower side 157 of the substrate 150 in the 410 of the middle section, and the substrate 150 has at least one receiving portion 360. The adjusting auxiliary device 200 is fixed in the adjusting position by moving the fixing section 310 of the adjusting auxiliary device 200 along the lateral direction 398 of the fixing section 310, or in the direction of arrow 301, into the receiving portion 360. Figure 4 (410) in the middle.

[0045] It should be noted that the substrate 150 may also have more than one receiving section 360. Therefore, for example, multiple receiving sections 360 may be arranged in the area of ​​the slot 152 of the substrate 150. In addition, the handheld machine tool 100 may also have a storage slot for storing the adjustment auxiliary device 200.

[0046] Figure 4 Show Figure 1 The base plate 150 of the handheld machine tool 100, viewed from its lower side 157. Figure 4 In the adjustment position 410, the adjustment auxiliary device 200 is arranged. In the adjustment position 410, the adjustment auxiliary device 200... Figure 3 The fixed section 310 is preferably arranged on the substrate 150. Figure 3 In the receiving section 360. Preferably, Figure 3The fixed section 310 is locked or press-fitted in the receiving section 360. The adjustment auxiliary device 200 is preferably connected via the fixed section 310. Figure 3 The fixed section 310 is pivotally arranged on the lower side 157 of the substrate 150 in the circumferential direction 402.

[0047] The receiving part 360 is preferably arranged on the lower side 157 of the substrate 150 such that the adjustment auxiliary device 200 covers at least section of the slot 152 of the substrate 150 along the longitudinal extension 409 of the substrate 150.

[0048] Figure 5 Show Figure 4 The handheld power tool 100 has a base plate 150, an adjustment aid 200 in an adjustment position 410, and an insert tool 145. Here, the surface 510 of the adjustment aid 200 facing the insert tool 145 is arranged on the bottom side 157 of the base plate 150.

[0049] exist Figure 5 In the illustration, the lower cutting edge 321 of the insert tool 145 is arranged at an exemplary spacing 505 relative to the lower side 157 of the substrate 150 or relative to the surface 510 of the adjustment aid 200. Because in Figure 5 The spacing of 505 shown will result in an insufficiently constructed radius during milling, such as being too small or having a shoulder. To prevent this, it is necessary to... Figure 1 The height adjustment device 175, which has an operating element 170, performs precise adjustment or alignment of the height of the lower cutting edge 321 shown in the figure.

[0050] Figure 6 The substrate 150 and the adjustment aid 200 in the adjustment position 410 are shown. Figure 5 An insert tool 145 is provided, wherein the insert tool 145 is arranged in a precisely adjusted machining position. In this machining position of the insert tool 145, the illustrated lower cutting edge 321 is preferably aligned with the surface 510 of the adjustment aid 200 or with the lower side 157 of the substrate 150. For this purpose, the height adjustment device 175 is preferably operated for such a long time that the cutting edge 321 rests against the surface 510 of the adjustment aid 200.

[0051] Figure 7 Show Figure 1 The handheld power tool 100 and the base plate 150, and the one constructed according to another embodiment Figure 2 Adjustment auxiliary device 200. In Figure 7 In the illustrated embodiment, the substrate 150 has a slot 720 on its lower side 157 for arranging the adjustment aid 200 in the adjustment position 410 and the rest position. Figure 7 In the middle, the adjustment auxiliary device 200 is arranged in the adjustment position 410.

[0052] according to Figure 7 In this embodiment, the adjustment aid 200 is constructed in the form of a slider, and is therefore also referred to below as "slider 200". The slider 200 is preferably disposed on the substrate 150 in a recessed manner. Illustrated, the slider 200 is movable along the longitudinal extension 409 of the substrate 150. In the adjustment position 410, the slider 200 preferably extends into the slot 152 in the radial direction of the slot 152 of the substrate 150.

[0053] Preferably, the slot 720 has a guide rail 725 in which the slider 200 is movable. In the adjusted position 410, the slider 200 is arranged on the lower side 157 of the substrate 150 with its surface 510 facing the insertion tool 145. In the rest position, the slider 200 is preferably arranged on the lower side 157 of the substrate 150 with its surface 710 facing away from the insertion tool 145. Here, the slider 200 is preferably arranged outside the slot 152 of the substrate 150 in the rest position so that the insertion tool 145 can be processed.

[0054] Figure 8 The substrate 150 with adjustment auxiliary device 200 is shown. Figure 7 The insertion tool 145 is shown, and the guide rail 725 of the slot 720 is also visually shown. The slider 200 is arranged on the lower side 157 of the substrate 150 with its surface 510 facing the insertion tool 145 in its adjusted position 410, and in the rest position, the slider 200 is arranged on the lower side 157 of the substrate 150 with its surface 710 facing away from the insertion tool 145. For this purpose, the guide rail 725 preferably has a first section 731 (illustrated left side) for arranging the slider 200 in the adjusted position 410 and a second section 733 (illustrated right side) for arranging the slider 200 in the rest position. In the adjusted position 410, the slider 200 is arranged in the first section 731, in which the surface 510 of the slider 200 is aligned with the lower side 157 of the substrate 150. In the rest position, the slider 200 is arranged in the second section 733, in which the surface 710 of the slider 200 is aligned with the lower side 157 of the substrate 150. The two sections 731, 733 of the guide rail 725 are preferably connected to each other by a ramp 732.

[0055] For guidance within the guide rail 725, the slider 200 has at least two lateral guide pins 811, 812, 813, and 814. To position the slider 200 in its rest position, the slider 200 moves to the right, as illustrated, within the guide rail 725 in the direction of arrow 802. It should be noted that the substrate 150 can also be configured such that... Figure 7 and Figure 8 The slider 200 can also move from the adjustment position to the stationary position by twisting / rotating in the guide rail of the substrate 150.

Claims

1. A handheld power tool (100), comprising: Housing (105), in which a drive unit (120) for driving an insert tool (145) is arranged. A height-adjustable base plate (150) on the housing (105) is used to guide the handheld machine tool (100) on the workpiece surface, wherein, The substrate (150) has a slot (152) through which the insert tool (145) engages at least in sections; and A height adjustment device (175) is provided for adjusting the working height of the base plate (150) on the housing (105) relative to the insert tool (145). The system includes an adjustment aid (200) that enables height adjustment of the lower side (157) of the substrate (150) relative to a predetermined cutting edge (321) of the insert tool (145) via the height adjustment device (175). The adjustment aid (200) is arranged on the lower side (157) of the substrate (150) at least in an adjustment position (410). The adjustment aid (200) has a fixed section (310) and the substrate (150) has a receiving portion (360) on its lower side (157). The fixed section (310) is arranged in the receiving portion (360) in the adjustment position (410). The system is characterized in that the adjustment aid (200) is pivotally arranged on the lower side (157) of the substrate (150) via the fixed section (310).

2. The handheld machine tool according to claim 1, characterized in that, The adjustment auxiliary device (200) is in the shape of a strip.

3. The handheld machine tool according to claim 1, characterized in that, The adjustment auxiliary device (200) is rectangular.

4. The handheld machine tool according to any one of claims 1 to 3, characterized in that, The fixed section (310) is locked or press-fitted into the receiving part (360) in the adjusting position (410).

5. The handheld machine tool according to any one of claims 1 to 3, characterized in that, The substrate (150) has a receiving portion (160) on its upper side (156) for receiving the fixed section (310) in the rest position (210) of the adjustment aid (200) so that the adjustment aid (200) can be arranged on the upper side (156) in the rest position.

6. The handheld machine tool according to any one of claims 1 to 3, characterized in that, The substrate (150) has another slot (720) on its lower side (157) for arranging the adjustment aid (200) in the adjustment position (410) and the rest position.

7. The handheld machine tool according to claim 6, characterized in that, The other slot (720) has a guide rail (725), and the adjustment auxiliary device (200) has at least two lateral guide pins (811, 812, 813, 814) for guiding in the guide rail (725).

8. The handheld machine tool according to claim 6 or 7, characterized in that, The adjustment aid (200) is arranged on the underside (157) of the substrate (150) with its surface (510) facing the insertion tool (145) in its adjustment position (410), and on the underside (157) of the substrate (150) with its surface (710) facing away from the insertion tool (145) in its rest position.

9. The handheld machine tool according to any one of claims 6 to 8, characterized in that, The adjustment aid (200) is constructed in the form of a slider that can be sunkenly arranged on the substrate (150).

10. The handheld machine tool according to any one of claims 1 to 9, characterized in that, The handheld machine tool (100) is a grooving planer.

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