EP3256297B1 - Manually operated cutting machine comprising a depth adjustment arrangement - Google Patents

Description

The invention relates to a hand-held cutting machine, in particular a sawing machine, with a drive assembly which has a tool holder for a disc-like cutting tool, in particular a saw blade, and a drive motor for driving the tool holder in rotation, according to the preamble of claim 1.

Such hand cutting machines are in WO 2004/060621 A1 or EP 1 777 047 A1 explained.

Such hand cutting machines are, for example, pendulum hood saws, plunge saws or the like. Using the depth adjustment device, it is possible for the drive assembly to be fixable with respect to the guide device in order to permanently set a defined cutting depth. Furthermore, it is possible for the depth adjustment device to represent a stop against which the drive assembly strikes at the respectively predetermined cutting depth. Consequently, a number of functions can be implemented using such a depth adjustment device.

However, the construction of a respective depth adjustment device is very much limited to the respective type of manual cutting machine.

It is therefore the object of the present invention to provide a hand-held cutting machine with a depth adjustment device that is as universal as possible.

A hand cutting machine according to the technical teaching of claim 1 is provided to solve the problem.

The guide depth adjustment element can, for example, form part of the guide device, ie it can be fixedly arranged on the guide device. At this point it should be noted that the guide device can also be in several parts, ie it can also include a drive carrier for the drive assembly, which will be explained later. The guide depth adjustment element can be arranged, for example, on the drive support. The drive depth adjustment element is, for example, arranged in a stationary manner on the drive assembly, for example a housing of the same.

The guide depth adjuster may form or include a stop for the drive assembly. The drive depth adjustment element can also form or have, for example, a stop for the guide device, for example the aforementioned drive support.

The basic idea is that the setting body is related to the drive assembly and is related to the guide device. The adjustment body can thus be connected to the drive assembly on one occasion, to the guide device on another occasion and also to both the guide device and the drive assembly. As a result, the setting body can implement a number of completely different setting functionalities. become below some setting functionalities explained, which can be provided individually or in any combination with each other.

The at least one setting functionality includes a stop function, for example. The setting body preferably serves as a stop element for stopping the drive assembly in at least one depth-of-cut position. It is possible, for example, for the setting body to be fastened to the guide depth setting element and for the drive assembly to strike the setting body, which is stationary relative to the guide device. However, it is also possible for the adjustment body to be firmly connected to the drive assembly and to be moved with it, so to speak, whereby in its function as a stop body it strikes a counter-stop element which in turn is fixed in place on the guide device.

A further advantageous setting functionality includes a display function. It is preferred if the setting body serves as a display element for displaying a respective cutting depth position. It is possible for the display element to carry an index, for example, which is moved on a display scale that is stationary relative to the drive assembly or the guide device. For example, a corresponding scale can be provided on the guide depth setting element or the drive depth setting element, past which the setting element or the index of the setting element is moved in order in this way to indicate a respective cutting depth. It is preferred that a display scale is present on the setting body, which is moved past an index that is stationary relative to the guide device or relative to the drive assembly. If the setting body is adjusted directly with respect to a corresponding index, indexes adjustable in the manner of tabs, for example, are not necessary. An index or a display scale can thus be provided on the setting element, for example.

A further setting functionality is, for example, a fixing function. It is preferred if the setting body acts as a fixing element for fixing the drive assembly with respect to the guide device in at least one cutting depth position is designed or used. It is possible, for example, that in this case the guide attachment device and the drive attachment device are connected to the setting body in order in this way to fix the drive assembly relative to the guide device in a predetermined cutting depth position.

A preferred embodiment provides that the depth adjustment device has or forms a fixing device for fixing the drive assembly with respect to the guide device in at least one cutting depth position. This functionality is preferably implemented in connection with the setting body. However, it is also possible for the fixing function to be implemented independently of the setting body. The setting body can serve as a stop element, for example, and the fixing function can also be implemented, for example by providing a clamping device or latching device or locking device for clamping, latching or locking the drive assembly relative to the guide device away from the setting body.

If the depth adjustment element and the adjustment body are connected to one another by the respective fastening device, they are advantageously fixed to one another relative to one another with regard to at least one degree of freedom of movement.

The setting body expediently forms a fixing body for fixing the drive assembly with respect to the guide device. For example, the fixing body forms or includes a form-fitting body that enables a form-fitting hold, and/or a clamping body that can be clamped or acts actively in the sense of clamping. For example, the adjustment body can include a pair of clamps or the like.

An advantageous embodiment of the invention provides that the drive attachment device or the guide attachment device or both have a locking device for locking the adjustment body with the respective depth adjustment element. At least one of the aforementioned fastening devices can also include a clamping device for clamping the adjustment body to the respective depth adjustment element (guide depth adjustment element or drive depth adjustment element).

Furthermore, it is possible for a frictional contact surface to be provided on a holding element of the drive fastening device or the guide fastening device, the frictional contact surface being used for frictionally locking the setting body. In this context, it is advantageous to have a frictional contact surface on the setting body as well. The frictional contact surface can, for example, comprise a rubber coating or the like.

A form-fitting hold, which the respective fastening device and the adjustment element implement together, is preferred. It is expediently provided that the drive fastening device or the guide fastening device or both and the setting body have form-fitting contours and counter-form-fitting contours that match one another. For example, positive-locking projections are provided in the fastening device, which can positively engage in positive-locking receptacles of the adjustment body.

An advantageous configuration provides that the form-fitting contours or counter-form-fitting contours or both have a row of teeth or another arrangement of form-fitting projections or form-fitting receptacles arranged next to one another in a row direction, which are assigned to different cutting depth positions. For example, two or more form-fitting projections or form-fitting receptacles are arranged next to one another. It is particularly preferred if at least one, preferably two rows of teeth is or are provided, which can be brought into engagement with a counter-tooth or with one another in different cutting depth positions. Due to the several teeth, which are each in engagement with each other, a particularly firm hold is given in the respective cutting depth position.

The invention provides that the drive fastening device and the guide fastening device are spring-loaded in the direction of a holding position holding the setting body. The fastening device thus has a holding element which is loaded by a spring or spring arrangement in the direction of the holding position. The operator only has to be active in one direction, i.e. bring the fastening device from the holding position to a release position so that the setting body is released. An adjusting spring, for example, then works in the opposite direction, in particular a compression spring or a tension spring, which loads the respective holding element of the drive fastening device or the guide fastening device in the direction of the holding position.

It is expediently provided that the holding element can be deflected relative to one another by adjusting the drive assembly and the guide device about the depth adjustment axis in the direction of a release position releasing the adjustment body, i.e. having a corresponding actuating contour, for example an actuating bevel. A holding element is therefore preferably provided which, for example, can be brought into a release position by adjusting or pivoting the drive assembly about the depth adjustment axis towards the guide device or can be adjusted in the direction of the release position, for example pivoted out, and thereby releases the adjustment body or is pretensioned in order to to hold the adjustment body again. In this case, it is preferably provided that the holding element is then again acted upon by the spring or spring arrangement into the holding position in order to hold the adjusting body. For example, the drive assembly can be fixed in the lower cutting depth position. It is also possible in this way to latch or clamp the setting element to the retaining element, for example, so that the setting element is connected in a stationary manner to the guide device, for example the drive carrier, or the drive assembly.

Conveniently, a support member of the drive fixture or the guide fixture is moveable on the drive assembly or the guide device is mounted between a holding position holding the setting body and a release position releasing the setting body. However, it is also possible for a holding element of the drive fastening device or the guide fastening device to be movably mounted on the setting body and, for example, to be moved away from the associated drive depth setting element or guide depth setting element in the release position, but in contact with it in the holding position is, for example, positively engages in this or frictionally engages this.

A holding element of the respective fastening device, on which form-fitting contours, friction-locking surfaces or the like are provided, for example, which is therefore provided for holding the adjustment body, is expediently pivotably mounted on the drive fastening device or the guide fastening device. For example, the holding element is pivotally mounted on the guide device or the drive assembly or the adjustment element. Such a holding element can be actuated particularly easily. However, it is also possible for a holding element of the drive fastening device or the guide fastening device to be mounted in a sliding manner on the drive assembly or the guide device or the adjustment body.

It is preferred if the drive attachment device or the guide attachment device or both has a hook or a retaining pawl for engaging in the adjustment body. The hook or latch is spring loaded.

The drive fastening device and/or the guide fastening device preferably have a holding element which has a holding arm and an actuating arm which is at an angle thereto, for example approximately at right angles. The holding arm is intended to be in contact with the adjustment body. For example, the holding arm has a frictional surface or clamping surface or form-fitting contours for holding the adjustment body. The operating arm protrudes at an angle from the holding arm and can be conveniently gripped by the operator.

It is expedient if an actuating element for manually actuating the guide fastening device or the drive fastening device or both, for example a corresponding handle section of the aforementioned actuating arm, is arranged at the rear of the hand-held cutting machine in the working direction. Of course, the actuating element can also be provided at the top, for example at the top of the drive assembly.

It is advantageous if an actuating element is arranged in an area of the drive assembly that is furthest away from the guide surface, ergonomically for example in the area of an upper apex area of the drive assembly, for example a cover hood for the cutting tool.

Using the actuating element, an operator can, for example, move the guide fastening devices and/or the drive fastening device from a fixing position that fixes the adjustment body with the respective depth adjustment element into a release position, in which the adjustment body can be moved relative to the respective depth adjustment element, and/or vice versa from the release position into the fixing position.

It is expedient if the drive fastening device and/or the guide fastening device is loaded by a spring or spring arrangement in the direction of the fixing position and the operator only has to actively actuate the respective fastening device in the direction of the release position. For example, the respective fastening device forms a latching device which is loaded by the spring or spring arrangement in the direction of the adjustment element with the drive depth adjustment element or the guide depth adjustment element in the direction of the fixing position.

A manual actuating element is expediently assigned an abutment element, for example an arm, to which the operator holds the actuating element can move towards. For example, the operator can grasp the actuating element and the abutment element in the manner of a pair of pliers or scissors.

It is advantageous if a guide arrangement is provided for guiding the drive assembly at a distance from the depth adjustment bearing, in order to guide the drive assembly relative to the guide device during the adjustment around the depth adjustment axis.

It is possible for the drive assembly to be guided away from the depth adjustment device relative to the guide device with respect to the depth adjustment axis. For this purpose, for example, a separate guide arrangement is then provided with, for example, a guide projection on the drive assembly, which dips into a guide receptacle of the guide device. For example, arcuate guide surfaces or the like can also be provided.

A preferred embodiment of the invention provides that the depth adjustment device has or forms a guide arrangement for guiding the pivoting movement of the drive assembly about the depth adjustment axis relative to the guide device. Consequently, the depth adjustment device contributes to the guidance of the drive assembly with respect to the guide device.

The guide components of this guide arrangement can be provided independently of the adjustment body, for example, can include guide projections and guide receptacles that engage in one another, or corresponding guide links or surfaces. However, it is preferred if the adjustment body forms a guide component of this guide arrangement.

An expedient variant of the invention provides that the guide depth adjustment element and/or the drive depth adjustment element or both have or form a guide for the adjustment body. For example, the respective depth adjustment element has a guide receptacle for receiving the adjustment body or a guide projection for engaging in the adjustment body. Corresponding components are preferably provided on the setting body, for example a guide receptacle into which a guide projection of the depth adjustment element engages. If the setting body engages in a guide receptacle of a respective depth setting element, no special measures may be required. A guide seat is configured as a guide channel, for example.

A guide receptacle or a guide projection, which is provided on the adjustment body or on a respective depth adjustment element, for example the drive depth adjustment element or the guide depth adjustment element, expediently has an arcuate course. The curve or arc is a predetermined radius about the depth adjustment axis.

It is expediently provided that the guide body is mounted in the respective guide receptacle so that it can slide. The guide body and the sliding receptacle expediently have an arcuate course.

It is preferred if the adjustment body has an arcuate shape and/or is rod-shaped. A curvature or an arc shape of the adjustment body runs, for example, around the depth adjustment axis with a predetermined radius.

The adjustment body preferably has an elongated shape.

The setting body extends, for example, along a path running around the depth setting axis.

The setting body is preferably held in a respective guide so that it cannot rotate. For example, the setting body has a polygonal, in particular rectangular, cross-section, which corresponds to a corresponding inner contour of the guide that accommodates it in a torsion-proof manner.

It is advantageously provided that the drive assembly is acted upon by a restoring spring device in the direction of the upper cutting depth position.

The advantage of this design is that the hand-held cutting machine adjusts itself in the direction of the upper cutting depth position, so to speak. If, for example, a depth adjustment device is provided which allows the operator to fix the drive assembly with respect to the guide device in order to set a cutting depth in this way, the operator only needs to loosen this fixation, whereupon the drive assembly then moves automatically, so to speak, namely by the force the return spring device, adjusted in the direction of the upper cutting depth position. The operation and handling is very convenient and simple.

The return spring device allows the hand cutting machine to be used both as a conventional pendulum hood saw and as a plunge saw.

An advantageous variant provides that the restoring spring device is arranged on the depth adjustment device. It is also possible for the return spring device to be integrated into the depth adjustment device or for it to form part of the depth adjustment device.

A further variant of the invention provides that the hand-held cutting machine has a guide arrangement for guiding the pivoting movement of the drive assembly about the depth adjustment axis relative to the guide device. The guide assembly is spaced from the depth adjustment bearing. It is advantageous if the restoring spring device is arranged on the guide arrangement or is integrated into it. It can also form part of the guide arrangement.

The guide arrangement and the depth adjustment device can represent one and the same assembly or can be arranged on it. In this respect, it is also possible for the restoring spring device to be arranged on the depth adjustment device and at the same time on the guide arrangement.

The guide arrangement expediently has guide elements that are guided on one another. The restoring spring device is expediently guided on at least one of the guide elements.

The guide elements preferably include a guide projection and a guide receptacle in which the guide projection engages. The restoring spring device is expediently arranged between the guide projection and the guide receptacle. For example, the guide projection is rod-shaped and penetrates through a spring of the restoring spring device or penetrates into it. The spring is advantageously arranged in the guide seat.

It is possible that the restoring spring device is advantageously accommodated and/or guided in a guide receptacle, in particular for guiding the adjustment body. Furthermore, it is additionally or alternatively possible for the restoring spring device to be guided on a guide projection and/or on the adjustment body. For example, the guide projection or the adjustment body penetrates or passes through the restoring spring device, in particular a helical spring.

At this point, however, it should be mentioned that the restoring spring device does not necessarily have to be arranged on or near the depth adjustment device. The restoring spring device can also be arranged apart from the depth adjustment device or next to the depth adjustment device.

A preferred embodiment of the invention provides that the depth adjustment device or the guide arrangement form or have the spring deactivation device.

It is advantageously provided that the setting body forms a holder or guide for the restoring spring device. For example, the restoring spring device dips into a receptacle of the setting body.

An advantageous variant of the invention provides that the setting body forms a spring holding element of the spring deactivation device. For example, the restoring spring device can be fixed in a predetermined deactivation position using the setting body, so that it does not act on the drive assembly or acts to a lesser extent in the direction of the upper cutting depth position. This is possible, for example, that the adjustment body based the drive fastener or the guide fastener between the adjustment body and a further spring holding element, which is preferably formed by the drive depth adjuster or the guide depth adjuster, are fixed in place and kept inactive.

An intrinsically independent embodiment, which is not according to the invention, is provided when a hand-held cutting machine according to the preamble of claim 1 is provided with a latching device for latching the drive assembly with the guide device in at least one cutting depth position. The latching device is formed, for example, by the depth adjustment device or is arranged on it. It is preferably provided that a corresponding latching position can be preselected, so to speak, for example using the already mentioned setting element, which can be fixed with regard to the guide device using the guide fastening device in the respective cutting depth or in front of the selected cutting depth of the cutting depth is inactive, so to speak.

In the case of the hand-held cutting machine, it is preferably provided that it has a hood-like covering device for covering the cutting tool, which is mounted pivotably between an open position and a closed position with respect to the drive assembly and which, in the open position for making a cutting cut in a workpiece, has a section of the part that protrudes in front of the guide surface Releases the cutting tool and covers the cutting tool in the closed position.

In the closed position, the covering device completely or at least partially covers the parting tool. In any case, it is preferably provided that the covering device, in the closed position, covers a region or apex region of the severing tool that projects in front of the guide surface and is the most distant.

Provision is preferably made for the cover device to be arranged below the guide surface of the guide device in the closed position.

It is preferred if the hand-held cutting machine has a spring deactivation device for at least partially deactivating the restoring spring device, with the restoring spring device not loading the drive assembly in the deactivated state, or loading it to a lesser extent in the direction of the upper cutting depth position. For example, the restoring spring device is held in this deactivation position between spring holding elements, so to speak, clamped or clamped, for example, which is or can be connected in a stationary manner to the drive assembly or the guide device. For example, one of the spring retaining elements can be arranged permanently in a fixed position on the drive assembly or the guide device, while the other spring retaining element is between an activation position that releases the return spring device, in which the return spring device acts on the drive assembly in the direction of the upper cutting depth position, and a Deactivation position are adjusted, in which the restoring spring device is held between the spring retaining elements. For example, it is possible for the spring deactivation device to have a clamping screw, a clamping body, a clamping lever, a catch, a pawl or the like in order to hold the return spring device in the at least partially deactivated state. One of the aforementioned spring retaining elements is thus preferably mounted on the drive assembly or the guide device so that it can be adjusted between a release position that releases the return spring device and a blocking position that keeps the return spring device at least partially inactive.

Conveniently, the spring deactivation device forms a fixed or integral part of the hand-held cutting machine. It is expediently provided that the spring deactivation device cannot be detached from the hand-held cutting machine during normal use and/or that the spring deactivation device is advantageously not designed as an additional adapter.

The spring deactivation device can expediently be actuated without tools and/or by an actuating element permanently present on board the hand-held cutting machine.

Provision is expediently made for the spring deactivation device to remain on board the hand-held cutting machine even when the return spring device is in the deactivated state. The spring deactivation device thus always or permanently remains on board the hand-held cutting machine, so that it can be used by the operator at any time.

An advantageous embodiment provides that the covering device is spring-loaded in the direction of the closed position. For example, a corresponding closing spring is provided, which is tensioned when the cover device is adjusted from the closed position to the open position and thus loads the cover device in the direction of the closed position.

An actuating device for manually adjusting the covering device from the closed position to the open position is advantageously provided. The actuating device is expediently arranged on the drive assembly. The actuating device preferably has an actuating element, for example an actuating lever or the like, which can be actuated by the operator when gripping the drive assembly. The design is preferably such that the operator, as it were, manually actuates the covering device from the closed position into the open position, but the spring loading acts in the opposite direction. A preferred embodiment provides that the spring arrangement is integrated into the actuating device. For example, the aforementioned actuating element can be spring-loaded into a position corresponding to the closed position of the covering device.

The hand cutting machine is preferably a so-called pendulum hood saw. The hand cutting machine can also be a so-called plunge saw. Furthermore, the approach according to the invention can also be easily implemented in cut-off grinders. It is preferred if the Hand cutting machine according to the invention can be used both as a pendulum hood saw and as a plunge saw.

The guide device includes, for example, what is known as a saw table, which can be guided by the operator along the workpiece or a guide rail resting on the workpiece. The depth adjustment bearing allows you to set the desired cutting depth.

A preferred embodiment of the invention provides that the depth adjustment axis is at the front in the working direction. However, it is also conceivable that the depth adjustment axis is arranged at the rear in the working direction.

Provision is preferably made for the guide device to have a drive carrier on which the drive assembly is mounted so as to be pivotable about the depth adjustment axis by means of the depth adjustment bearing.

It would be possible for the drive assembly to be stationarily arranged on the drive carrier. Expediently, the drive carrier is mounted pivotably about a miter axis with respect to a guide element having the guide surface, in particular a guide plate, by means of a miter bearing arrangement. The miter axis is expediently parallel to the working direction.

The depth adjustment device is advantageously provided between the drive carrier and the drive assembly.

The restoring spring device, for example, is arranged between the drive carrier and the drive assembly.

The drive motor of the drive assembly is expediently arranged in a machine housing.

At the drive assembly, for example the machine housing, is expediently at least one handle for gripping and / or for guiding Hand cutting machine provided or arranged. There are preferably several handles or handle sections. At least one handle or handle section for gripping or guiding the hand-held cutting machine is expediently also present on the guide device, for example a saw table.

The drive motor is expediently an electric drive motor. An energy store is preferably present, for example a battery pack. However, the hand-held cutting machine can also be a corded hand-held cutting machine, for example having a connection for connecting to an electrical power supply network, for example with 120 V or 230 V. Furthermore, it is easily possible for the hand-held cutting machine to have both an electrical energy store or an interface for it and a mains cable for connection to an electrical energy supply network.

The guide device expediently comprises a guide plate or a saw table. It is preferred if the guide device is provided for interaction with a guide rail. Gripping structures are expediently present on the guide element and the guide rail, so that the guide device can be moved along the guide rail in the working direction or longitudinal direction, but cannot be removed from the guide rail transversely to the working direction or longitudinal direction. In this way, chop cuts can be carried out quite easily.

Figur 1

eine perspektivische Schrägansicht von hinten auf eine Hand-Trennmaschine beim Einbringen eines Sägeschnittes in ein Werkstück in einer oberen Schnitttiefenposition,

Figur 2

die Hand-Trennmaschine gemäß Figur 1 in einer unteren Schnitttiefenposition mit einem Detail X, das eine Anzeigeeinrichtung vergrößert darstellt,

Figur 2A

das Detail X bei teilweise in Richtung der oberen Schnitttiefenposition verstellter Antriebsbaugruppe,

Figur 3

eine Schnittdarstellung der Hand-Trennmaschine gemäß Figur 1, etwa entlang einer Schnittlinie I-I,

Figur 4

die Hand-Trennmaschine in der Schnittdarstellung gemäß Figur 1, jedoch in der unteren Schnitttiefenposition gemäß Figur 2,

Figur 5

die Hand-Trennmaschine gemäß der vorstehenden Figuren, jedoch teilweise schematisch und ohne Handgriff dargestellt etwa entsprechend einer Blickrichtung B in Figur 1 in der oberen Schnitttiefenposition,

Figur 6

die Hand-Trennmaschine in der Ansicht entsprechend Figur 5, jedoch in der unteren Schnitttiefenposition,

Figur 7

die Hand-Trennmaschine in der Ansicht etwa entsprechend Figuren 5, 6, wobei eine Antrieb-Befestigungseinrichtung in die Lösestellung verstellt ist (gestrichelt dargestellt),

Figur 8

die Hand-Trennmaschine etwa in der Stellung gemäß Figur 7, jedoch von der entgegengesetzten Seite her (etwa entsprechend einer Blickrichtung C in Figur 1),

Figur 9

eine Führungseinrichtung sowie einen Antriebsträger der Hand-Trennmaschine perspektivisch schräg von oben,

Figur 10

eine perspektivische Schrägansicht der Hand-Trennmaschine zusammen mit einer Führungsschiene, und

Figur 11

die Hand-Trennmaschine beim Einschneiden in ein Werkstück von der Seite her.

An exemplary embodiment of the invention is explained below with reference to the drawing. Show it:

figure 1

a perspective oblique view from behind of a hand cutting machine when making a saw cut in a workpiece in an upper cutting depth position,

figure 2

according to the hand-ripper figure 1 in a lower depth of cut position with a detail X showing a display device enlarged,

Figure 2A

the detail X with the drive assembly partially adjusted towards the upper depth of cut position,

figure 3

a sectional view of the hand cutting machine according to FIG figure 1 , approximately along a cutting line II,

figure 4

the hand cutting machine in the sectional view according to figure 1 , but in the lower depth of cut position according to figure 2 ,

figure 5

the hand-held cutting machine according to the above figures, but shown partially schematically and without a handle, approximately corresponding to a viewing direction B in figure 1 in the upper cutting depth position,

figure 6

the hand-held cutting machine in the view accordingly figure 5 , but in the lower cutting depth position,

figure 7

the hand-cutting machine in the view is approximately the same Figures 5, 6 , wherein a drive fastener is adjusted to the release position (shown in phantom),

figure 8

the hand cutting machine approximately in the position according to figure 7 , but from the opposite side (roughly corresponding to a viewing direction C in figure 1 ),

figure 9

a guide device and a drive carrier of the hand-held cutting machine in perspective from above,

figure 10

a perspective oblique view of the hand-held cutting machine together with a guide rail, and

figure 11

the hand cutting machine cutting into a workpiece from the side.

A hand-held cutting machine 10 according to the drawing is configured as a sawing machine. A drive assembly 11 has a drive motor 12 for rotating a tool holder 13 about an axis of rotation D. The drive assembly 11 includes a machine housing 35 which accommodates the drive motor 12 . A disk-shaped cutting tool, for example a cutting disk or a saw blade, can be detachably fastened to the tool holder 13 . The cutting tool 14 is screwed to the tool holder 13, for example, fastened using a bayonet connection or the like. Consequently, on the tool holder 13 there are bayonet connection means, screw connection means, a retaining screw or the like for fastening the cutting tool 14 to the tool holder 13 .

The drive assembly 11 can be gripped and guided by a handle 15 by an operator. A switch 16 for switching the drive motor 12 is arranged on the handle 15, in particular also for setting its speed. The drive motor 12 is an electric motor. It can, for example, be supplied with power via a mains cable, which is not shown in the drawing. However, a local energy supply on board the hand-held cutting machine 10, for example using a rechargeable battery or other energy store 17, is particularly preferred.

The handle 15 expediently extends in the working direction A of the hand-held cutting machine 10, with which it can be guided, for example, along a workpiece such as or a guide rail 90 for making a separating cut T in the workpiece W.

The hand-held cutting machine 10 has a fixed cover 18 and a movable cover device 19 for covering and covering the cutting tool 14 . For example, the fixed cover 18 forms part of the machine housing 35 or is stationarily arranged on it. The fixed cover 18 is always located on the upper side of the workpiece W or the upper side of the guide rail 90 when the hand-held cutting machine 10 is in operation. The movable cover device 19, on the other hand, covers the underside or the free side, so to speak of the separating tool 14, in particular when this is located away from the workpiece B. Thus, when the hand-held cutting machine 10 is not in use, the cutting tool 14 is generally arranged completely within the cover 18 and the covering device 19 so that the operator cannot injure himself even if the cutting tool 14 is still rotating.

The hand cutting machine 10 has a guide device 20 with a guide element 21, for example a guide plate. The guide element 21 is designed, for example, as a saw table. The drive assembly 11 is pivoted on the guide device 20 by means of a depth adjustment bearing 36 about a depth adjustment axis TA. Thus, a cutting depth ST of the cutting tool 14 into the workpiece W can be changed. A pivoting of the drive assembly 11 with respect to the guide device 20 about the depth adjustment axis TA is in figure 10 indicated by an arrow P.

The depth adjustment axis TA is located at the front in the working direction A, close to a front side 24 of the guide device 20. The saw blade or cutting tool 14, on the other hand, is arranged on the right-hand side 22 or longitudinal side of the guide device 20 or the guide element 21 in the working direction A. The drive assembly 11 is located between the side 22 and a left side 23 in the working direction A of the guide element 21 or the guide device 20.

The separating tool 14 partially protrudes to an upper side 26 of the guide element 21, partially in front of a guide surface 27 on the underside of the guide element 21, namely when the drive assembly 11 from the in figure 1 illustrated upper cutting depth position SO is at least partially adjusted or pivoted in the direction of a lower, for example the lowest cutting depth position SU. It is preferably provided that the cutting tool 14 does not protrude in front of the guide surface 27 in the upper cutting depth position SO.

A handle 28, which protrudes, for example, in front of an upper side of the guide element 20 and is preferably toggle-like, facilitates guidance and handling the hand cutting machine 10. The handle 28 is arranged in the working direction A in front of the handle 15.

Between the front side 24 and a rear or back side 25 of the guide element 21 in the working direction A, a longitudinal guide mount 33 for longitudinal guidance on a longitudinal guide projection 93 of the guide rail 90 and/or a rear grip mount expediently extends parallel to the working direction A, in a longitudinal direction L of the guide rail 90 34 for gripping from behind by a gripping projection 94 of the guide rail 90. The longitudinal guide projection 93 and the gripping projection 94 are arranged, for example, on an upper guide surface 92 of a rail body 91 of the guide rail 90. The guide device 21 can be guided in the working direction A and therefore in the longitudinal direction L of the guide rail 90 on the longitudinal guide projection 93 . This can be placed with its underside 95, for example, on the workpiece W, so that precise and straight saw cuts or separating cuts are possible in this way. The gripping projection 94 and the gripping receptacle 34 ensure that the guide rail 90 is held on the guide device 20 transversely to the longitudinal direction L, so that the entire unit consisting of the hand-held cutting machine 10 and the guide rail 90 can be taken by an operator from the workpiece W to another workpiece. without taking both components.

The drive assembly 11 is pivotably mounted with respect to the guide element 21 about a miter axis GA, which is parallel to the working direction A (corresponding to an arrow G in figure 10 ). For example, a drive carrier 40 is mounted pivotably about the miter axis A on the guide device 20 by means of a miter bearing arrangement 30 . A miter bearing arrangement 30 is provided between the guide element 21 and the drive carrier 40 . The miter bearing arrangement 30 is located close to the tool holder 13, ie on the right side 22 in the working direction A or on the long side.

The miter bearing arrangement 30 comprises a front miter bearing 31 in working direction A and a rear miter bearing 32 in working direction A.

The depth adjustment bearing 36 is arranged in the working direction A in front of the front miter bearing 31 . As a result, an exit region of the cutting tool 14 from the workpiece W can be viewed in a particularly favorable manner.

The miter bearings 31, 32 include bearing elements 37, 38 which project upwards in front of the guide element 21. At these counter bearing sections 41, 42 of the drive carrier 40 are pivotally mounted. The bearing elements 37, 38 and the counter-bearing sections 41, 42 are, for example, plate-like. The abutment sections 41, 42 can be clamped to the bearing elements 37, 38 by means of fixing elements, for example clamping screws or the like, in particular only a single clamping screw 39, so that a respective miter position or miter inclined position of the cutting tool 14 can be fixed relative to the guide surface 27. The cutting tool 14 will often be at right angles to the guide surface 27, as is regularly shown in the drawing.

The bearing element 37 preferably protrudes through a passage opening 45 in the drive carrier 40 .

In front of the front miter bearing 31 there projects a support arm 46 of the drive carrier 40 on which a support arm 29 of the drive assembly 11 is mounted. Bearing projections 47 protrude laterally from the support arm 46 and engage in corresponding bearing receptacles of the support arm 29 . The bearing projections 47 extend along the depth adjustment axis TA. Consequently, the support arm 29 and thus the drive assembly 11 pivots on the bearing projections 47 of the depth adjustment axis 36 about the depth adjustment axis TA.

A depth adjustment device 50 is provided at a longitudinal distance from the depth adjustment bearing 36 . Several functions can be implemented with the depth adjustment device 50, namely, for example, a display of a respective cutting depth position and/or a stop function with which the drive assembly 11 strikes in a preferably adjustable cutting depth position with respect to the guide device 20 and/or a fixing function to hold the drive assembly 11 to fix in a predetermined or adjustable cutting depth position ST with respect to the guide device 20.

The depth adjustment device 50 comprises an adjustment body 51 which is movably mounted with respect to a guide depth adjustment element 70 which is stationary with respect to the guide device 20 and a drive depth adjustment element 60 which is stationary with respect to the drive assembly 11 . The guide depth adjustment member 70 is provided on the drive bracket 40, for example.

The adjusting body 51 is rod-shaped, but not straight but curved. It has a curvature which has a fixed radius around the depth adjustment axis TA, and therefore runs in an arc around the depth adjustment axis TA.

The setting body 51 is slidably accommodated in a guide receptacle 72 of the guide depth setting element 70 . The guide receptacle 72 has an arcuate profile corresponding to the curvature or arc shape of the setting body 51. The setting body 51 can thus be moved in the guide receptacle 72 around a curved path KB, the curvature or radius of which is constant with respect to the depth adjustment axis TA.

The guide receptacle 72 comprises a guide wall 71 radially on the outside with respect to the cam track KB and a support contour 73 radially on the inside with respect to the cam track KB. Long sides 54, 53 of the adjustment body 51 are supported on the guide wall 71 and the support contour 73, which advantageously form components of the drive carrier 40 . The long side 54 has a smooth surface, while the long side 53 has teeth 58, as will become clear below. The long sides 53, 54 have an arcuate course.

Between the lower longitudinal end area 55 and an upper longitudinal end area 56 of the adjusting body 51 there extends a guide receptacle 52 into which the drive guide element 60 with a guide projection 62 dips.

The longitudinal sides 54, 53 extend between the longitudinal end regions 55, 56 of the setting body 51. The setting body 51 is, for example, approximately rectangular or square in cross section. However, the setting body 51 could also have other cross-sectional contours, for example a circular cross-sectional contour.

Long sides (not designated in more detail) of the adjustment body 51 extending between the narrow sides or long sides 53, 54 are supported on one side on a side wall 48 of the machine housing 35 and on the other hand on a support wall 44 of the drive carrier 40. The support wall 44 is located between the guide wall 71 and the support contour 73 and laterally delimits the guide receptacle 72 ( Figures 8, 9 ).

A longitudinal end region 55 of the adjustment body 51 facing the guide device 20 can strike a bottom 74 of the guide receptacle 72 when it is in its in the Figures 3 and 4 shown lower position is adjusted.

The adjustment body 51 is movably mounted on the drive assembly 11 with respect to the drive depth adjustment element 60 . The guide projection 62 projects in front of a head 61 of the drive depth adjustment member 60 . The head 61 of the drive guide element 60 is fixed in place, for example, on the machine housing 35, expediently in the vicinity of the handle 15. The guide projection 62 has a rod-like shape and protrudes towards the guide device 20 in front of the head 61 .

Furthermore, it is possible for further guide components, for example a guide slot 63 and a guide wall 64 opposite this, to be provided on the drive assembly 11, between which the setting body 51 can be adjusted in a sliding manner. The guide wall 64 and the guide link 63, which is also designed in the manner of a wall, for example, delimit an arcuate guide receptacle 63a for the adjustment body 51.

The guide projection 62 also has an arcuate shape like the adjustment body 51 and the guide receptacle 72 and the guide receptacle 52 and the guide receptacle 63a.

Thus, these guide components can interact with one another in the sense of a guide relative to one another or on one another, in particular can engage with one another. As a result, a guide arrangement 75 is created overall, which guides the drive assembly 51 at a distance from the depth adjustment bearing 36 when pivoting about the depth adjustment axis TA.

There is a gap or clearance between the guide projection 62 and the guide receptacle 51 of the adjustment body 51 . A return spring device 65 with a return spring 66 is arranged at this distance. The return spring 66 is a coil spring. The guide projection penetrates the return spring 66. An outer circumference of the return spring 66 rests against the inner circumference of the guide receptacle 52, for example. The return spring 66 is expediently supported with its one longitudinal end on a base 59 of the guide receptacle 52 provided on the longitudinal end region 56 and with its other longitudinal end on the head 61 of the drive depth adjustment element 60 . The return spring device 65 thus loads the drive assembly 11 in the direction of the upper cutting depth position SO.

In principle, this spring action could be provided permanently, but in the present case it can be deactivated. In this context, the adjustment body 51 plays an advantageous and/or essential role.

The setting body 51 can be selectively connected to the guide device 20, in particular its drive support 40, and to the drive assembly 11 in a detachable manner, for which purpose a guide fastening device 80 and a drive fastening device 100 are provided.

The drive fastening device 80 comprises a holding element 81 which has a form-fitting projection 82 for engaging in a form-fitting receptacle 57a of the setting body 51 . The form-fitting recording 57 is, for example, on Longitudinal end region 56 of the adjustment body 51, at least on a section of the adjustment body 51 that protrudes far in front of the guide device 20.

The positive-locking projection 82 is provided, for example, on a holding arm 88 of the holding element 81 . An actuating arm 83 protrudes from the holding arm 81 . For example, the operating arm 83 is arranged so that it can be easily grasped by the operator. For example, the actuating arm 83 projects towards the handle 15 . The holding element 81 can be pivoted about a pivot axis by means of a pivot bearing 84 so that it can be adjusted between a holding position (shown in solid lines) and a release position (shown in dashed lines). In the release position, the retaining element 81 strikes a stop 85, for example. For example, the actuating arm 83 hits the stop 85, which is, for example, plate-like. In the holding position, the form-fitting projection 82 or the holding arm 88 engages in the form-fitting receptacle 57a on the setting body 51 so that the latter is connected to the drive assembly 11 .

The holding element 81 is acted upon by a spring arrangement 87 in the direction of the holding position. When the holding element 81 is moved into the release position, the spring arrangement 87 is tensioned. For example, an actuating projection 86 is provided which acts on the spring arrangement 87 . The spring arrangement 87 is supported on the one hand on the actuating projection 86 and on the other hand on a holder 89, for example a receiving chamber, for the spring arrangement 87. The bracket 89 is provided in a stationary manner on the drive assembly 11 .

Due to the spring loading based on the spring arrangement 87, the holding element 81 is designed in the manner of a latching device or forms a latching element. An actuating contour 57, for example an actuating bevel, is provided on the upper longitudinal end region 55 of the adjustment body 51 in order to deflect the holding element 81 in the direction of the release position, with the adjustment body 51 then being able to slide past the holding arm 88 until it engages with its form-fitting projection 82 in the Form-fit recording 57a engages, so to speak. Then the restoring spring device 85 is between, on the one hand, the drive depth adjustment element 60 and on the other hand the adjustment body 51, which can no longer be adjusted relative to the drive depth adjustment element 60 or is fixed in place, is so to speak firmly blocked and is therefore ineffective or deactivated. The operator can thus set an immersion depth or cutting depth position ST without the return spring device 85 acting in the direction of the upper cutting depth position SO.

The setting body 51 and the drive depth setting element 60 thus form spring holding elements for holding the restoring spring device 65 in a deactivated position. In this function, the depth adjustment device 50 thus forms a spring deactivation device 76.

In terms of construction, the arrangement of the return spring device 65 in the depth adjustment device 50 has the advantage that as few components as possible are required and the installation space is used optimally. For example, the restoring spring device 65 does not or hardly stands in the way of a suction of chips or the like.

At this point it should be noted that a restoring spring device would of course also be possible at another point, which is shown by way of example in figure 5 drawn return spring device 165 is indicated. This is supported, for example, directly on the guide element 20 and the drive assembly 11 . An additional guide, for example a guide sleeve or a guide rod, for the restoring spring device 165 is easily possible (not shown).

The adjustment body 51 can be firmly connected to the drive assembly 11 by means of the drive fastening device 80 and, when connected to the drive assembly 11, follows the pivoting movements thereof about the depth adjustment axis TA. Thus, for example, a display scale 67 on the adjustment body 61 can be adjusted relative to an index 68 for using the hand-held cutting machine 10 without the guide rail 90 or an index 69 stepped thereto for using the hand-held cutting machine 10 with the guide rail 90 . The indices 68, 69 together with the display scale 67 show the respective cutting depth position ST of the cutting tool 14 with respect to the guide surface 27. As mentioned, the restoring spring device 65 is deactivated in this case, so it does not interfere with the depth setting.

Using the guide-fastening device 100, the adjustment body 51 can be fixed in place with respect to the guide device 20, more precisely with respect to its drive support 40. This fixation or determination is also detachable. A holding element 101 of the guide-fastening device can, like holding element 81, move from a holding position holding adjustment body 51 in a form-fitting manner, in which teeth 102 on a holding arm 108 of holding element 101 engages in complementary teeth 58 on adjustment body 51, in particular its longitudinal side 53 a release position (by an arrow P1 in figure 6 indicated) are adjusted, in which the teeth 58, 102 do not mesh. The setting element 51 can then be adjusted relative to the guide device 20, namely displaceably.

The holding element 101 is mounted pivotably on a pivot bearing 104 . An actuating arm 103 protrudes from the holding arm 108, for example at right angles. Handling of holding element 101 is made easier by the fact that an abutment arm 43 is located opposite actuating arm 103, so that an operator can grip actuating arm 103 and abutment arm 43 with two fingers, for example, and move them toward one another in order to fix adjustment body 51 with respect to guide device 20 to solve using the guide-fastening device 100, so therefore to actuate the holding element 101 in the release position. The actuating arm 103 and the abutment arm can thus be moved towards one another in the manner of pliers (arrow P2).

The holding element 101 is acted upon by a spring arrangement 107 in the direction of the holding position. In the direction of the release position, the holding element 101, in particular its holding arm 108, strikes a stop 105.

The holding elements 81, 101 are preferably designed in the manner of holding pawls.

The toothing 102 is preferably arranged on a free end area or longitudinal end area of the holding arm 108 . It can thus act on the counter-toothing 58 with a relatively high leverage force, which enables a particularly firm hold. The teeth 58, 108 make it possible for the adjustment body 51 to be fixed in different longitudinal positions with respect to the guide depth adjustment element 70. The setting body 51 can thus penetrate the guide receptacle 72 to different depths and can then be fixed in a fixed position with respect to the guide device 20 in each case using the guide fastening device 100 . Thus, numerous cutting depth positions can be defined. Of course, instead of the relatively fine ribbing or toothing 58, 108, a frictional contact surface, a clamping surface or the like could also be provided, which also make it possible to set a large number of cutting depth positions.

At this point it should be noted that, of course, an alternative drive attachment device to the drive attachment device 80 can comprise a clamping device.

Furthermore, in addition to the positive-locking receptacle 57a, at least one further positive-locking receptacle, a friction surface or the like could be provided as an abutment contour for the holding element 81 or an alternative holding element provided, for example, as a clamping element or friction-locking holding element.

The adjustment body 51, which can be fixed in different cutting depth positions using the guide fastening device 100, preferably forms a stop for operating the hand-held cutting machine 10 as a plunge saw or plunge cutting machine. The longitudinal end area 56, so to speak the head of the adjustment body 51, is positioned at the desired cutting depth, fixed using the guide fastening device 100, so that it can represent a stop 56a for the drive assembly 11. For example, the head 61 of the drive depth adjustment element 60 strikes with its underside 61a, which forms a stop, against the setting body 51, the stop 56a.

The operator can therefore press the drive assembly 11 against the force of the restoring spring device 65 towards the guide device 20 and thus allow the cutting tool 14 to dip into the workpiece W. At the immersion depth or cutting depth set in this way, the drive fastening device 80 then finally snaps into the setting body 51 so that the tool holder 13 is fixed in place with respect to the guide device 20 in the cutting depth position defined by the guide fastening device 100 .

Of course, it is alternatively also possible that this latching function is, so to speak, overridden. This is possible, for example, in that the spring arrangement 87 can be deactivated by, for example, a holder. Furthermore, it is also possible that the holding element 81 is designed in the manner of a bolt, i.e. must be manually shifted or pivoted between the release position and the holding position and thus also remains in the release position without the application of spring force.

The guide-fastening device 100 and the drive-fastening device 80 each enable the drive assembly 11 to be locked in a respective cutting depth position ST relative to the guide device 20. The depth adjustment device 50 thus forms a fixing device 77 or a locking device 78 for fixing or locking the drive assembly 11 in one respective cutting depth position ST with respect to the guide device 20.

The movable covering device 19 is designed in the manner of a pendulum hood. The covering device 19 pivots about the axis of rotation D, that is, in one Pendulum movement or pivoting movement, the cutting tool 14 for introducing a separating cut T free.

The covering device 19 can be removed from its in figure 10 shown closed position S, in which it at least essentially completely covers the cutting tool 14, in an at least partially open open position O according to figure 11 adjustable. Opening movement can be achieved, for example, in that a front, free end area 120 of the covering device 19 strikes the workpiece W laterally. In the opposite direction, ie in the direction of the closed position S, a spring arrangement preferably acts, for example the closing spring 135 mentioned below. As a result, the covering device 19 expediently always covers the cutting tool 14 when the manual cutting machine 10 is not in use.

A type of fin or flipper, in any case a cutting wedge or guide element 121, is expediently arranged on the end region 120. The guide element 121 dips, for example, into the slitting slot T on the workpiece and thus ensures a straight severing cut, particularly when operating without the guide rail 90 .

However, it is also possible for an operator to actuate the covering device 19 manually from the closed position S into the open position O. For this purpose, an actuating device 130 is provided which has an actuating element 131 which can be actuated manually by an operator. The actuating element 131 has an actuating arm 132 which is designed in the manner of an actuating lever. The actuating arm 132 is pivotably mounted on a pivot bearing 133, and when it is actuated it pivots about the pivot bearing 133 and a driver lever 134 from the position shown in solid lines, associated with the closed position of the covering device 19, into a position shown in dashed lines, the open position O the cover 19 associated position can adjust. The driver lever 134 actuates a cable mechanism, not shown in detail, which covers the cover device 19 opens, so to speak, so operated in the open position. A closing spring 135 acts in the opposite direction, for example on the driver lever 134.

Claims (14)

1. Manually operated cutting machine, in particular sawing machine, with a drive assembly (11) having a tool holder (13) for a disc-type cutting tool (14), in particular a saw blade, and a drive motor (12) for the rotary drive of the tool holder (13), and with a guide device (20), which can be guided along a ground with a guide surface (27) and at which the drive assembly (11) is mounted for pivoting, by means of a depth adjustment bearing (36), about a depth adjustment axis (TA) between an upper and a lower cutting depth position (SU, SO), wherein the tool holder (13) is closer to the guide surface (27) in the lower cutting depth position (SU) than in the upper lower cutting depth position (SO), so that the cutting tool (14) projects farther in front of the guide surface (27) than in the upper lower cutting depth position (SO), wherein the manually operated cutting machine (10) has, for adjusting the respective cutting depth position (SU, SO), a depth adjustment device (50) with a guide depth adjustment element (70) connected to the guide device (20) and with a drive depth adjustment element (60) connected to the drive assembly (11), which is adjusted relative to the guide depth adjustment element (70) when adjusting the cutting depth position (SU, SO), and with an adjustment body (51) providing at least one adjustment functionality, wherein the adjustment body (51) is mounted movably with respect to the guide depth adjustment element (70) and the drive depth adjustment element (60) and can be releasably attached to the drive depth adjustment element (60) by means of a drive fastening device (80) and to the guide depth adjustment element (70) by means of a guide fastening device (100), wherein the drive fastening device (80) has a holding element (81) spring-loaded towards a holding position for holding the adjustment body (51), characterised in that the guide fastening device (100) has a holding element (101) spring-loaded towards a holding position holding the adjustment body (51) for holding the adjustment body (51).
2. Manually operated cutting machine according to claim 1, characterised in that the at least one adjustment functionality comprises a stop function in which the adjustment body (51) is used as a stop element for stopping the drive assembly (11) in at least one cutting depth position (SU, SO) and/or an indicating function in which the adjustment body (51 is used as an indicating element for indicating a respective cutting depth position (SU, SO) and/or a fixing function in which the adjustment body (51) is used as a fixing element for fixing the drive assembly (11) with respect to the guide device (20) in at least one cutting depth position (SU, SO).
3. Manually operated cutting machine according to claim 1 or 2, characterised in that the depth adjustment device (50) has or forms a fixing device (77) for fixing the drive assembly (11) with respect to the guide device (20) in at least one cutting depth position (SU, SO), preferably in a first and at least one second cutting depth position (SU, SO).
4. Manually operated cutting machine according to any of the preceding claims, characterised in that the drive fastening device (80) and/or the guide fastening device (100) have/has a latching device for latching the adjustment body (51) to the respective depth adjustment element and/or a clamping device for clamping the adjustment body (51) to the respective depth adjustment element and/or at least one positive-locking contour for engagement with a mating positive-locking contour of the adjustment body (51) and/or a friction-locking surface for holding the adjustment body (51) by friction, wherein it is advantageously provided that the positive-locking contour and/or the mating positive-locking contour have/has at least two positive-locking projections or positive-locking receptacles, in particular arranged adjacent to one another in the manner of a row of teeth and assigned to different cutting depth positions (SU, SO).
5. Manually operated cutting machine according to any of the preceding claims, characterised in that the drive fastening device (80) and/or the guide fastening device (100) have/has a holding element (81, 101), which is mounted pivotably in the direction of a holding position holding the adjustment body (51) and/or can be deflected in the direction of a release position releasing the adjustment body (51) by pivoting the drive assembly (11) relative to the guide device (20) about the depth adjustment axis (TA), for holding the adjustment body (51).
6. Manually operated cutting machine according to any of the preceding claims, characterised in that the drive fastening device (80) and/or the guide fastening device (100) have/has at least one hook or holding latch for engagement with the adjustment body (51) and/or the holding element (81, 101), with a holding arm for contact with the adjustment body (51) and an actuating arm (83, 103) oriented at an angle to the holding arm for operation by an operator.
7. Manually operated cutting machine according to any of the preceding claims, characterised in that an actuating element for the manual actuation of the drive fastening device (80) or the guide fastening device (100), in particular towards a release position, is located at the manually operated cutting machine at the rear in the working direction (A) and/or on a top side averted from the guide device (20), in particular in a crest region of the drive assembly at the greatest distance from the guide device (20) or the guide surface (27).
8. Manually operated cutting machine according to any of the preceding claims, characterised in that an actuating arm (103) for moving, in particular releasing, the drive fastening device (80) or the guide fastening device (100) is placed opposite an abutment arm (43), in particular in the manner of two pincer arms, so that an operator can grip the actuating arm (103) and the abutment arm (43) with e.g. two fingers and move the arms towards each other.
9. Manually operated cutting machine according to any of the preceding claims, characterised in that the depth adjustment device (50) has or forms a guide assembly (75) for guiding the pivoting movement of the drive assembly (11) about the depth adjustment axis (TA) relative to the guide device (20), wherein the adjustment body (51) expediently forms a guide component of the guide assembly (75).
10. Manually operated cutting machine according to any of the preceding claims, characterised in that the guide depth adjustment element (70) and/or the drive depth adjustment element (60) have/has or form(s) an in particular arcuate guide for the adjustment body (51), in particular a guide receptacle (52, 72) for the accommodation of the adjustment body (51) or a guide projection for engagement with the adjustment body (51).
11. Manually operated cutting machine according to any of the preceding claims, characterised in that adjustment body (51) has an arcuate shape and/or is rod-shaped and/or extends along a track about the depth adjustment axis (TA).
12. Manually operated cutting machine according to any of the preceding claims, characterised in that the adjustment body (51), when connected to the drive depth adjustment element (60) by means of the drive fastening devices (80), is taken along by the drive assembly (11) during the adjustment about the depth adjustment axis (TA) relative to the guide device (20) and dips into a receptacle, in particular a guide receptacle, provided at the guide device (20) and extending in an arcuate manner about the depth adjustment axis (TA), being in particular guided therein.
13. Manually operated cutting machine according to any of the preceding claims, characterised in that the drive assembly (11) is subjected to pressure by a return spring device (65) towards the upper cutting depth position (SU, SO), wherein it is advantageously provided that the manually operated cutting machine has a spring deactivation device (76) for the at least partial deactivation of the return spring device (65), so that the return spring device (65) applies no or only very little pressure to the drive assembly (11) towards the upper cutting depth position (SO), and/or in that the adjustment body (51) forms a holder or guide for the return spring device (65) and/or has a receptacle for the return spring device (65) and/or is designed for the deactivation of the return spring device (65).
14. Manually operated cutting machine according to any of the preceding claims, characterised in that it has a hood-type covering device (19) for covering the cutting tool (14), which covering device (19) is mounted for pivoting with respect to the drive assembly (11) between an open position (O) and a closed position (S) and which in the open position (O) uncovers a section of the cutting tool (14) projecting in front of the guide surface (27) for making a centre cut into a workpiece (W) and in the closed position (S) covers the cutting tool (14), and/or in that the guide device (20) has a drive support at which the drive assembly (11) is pivotably mounted by means of the depth adjustment bearing (36), wherein the drive support is mounted pivotably with respect to a guide element having the guide surface (27) about a mitre axis (GA) perpendicular to the depth adjustment axis (TA).

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