Drilling and countersinking cutter device

Abstract

The invention relates to a drilling and counter-boring tool arrangement with a chuck (40) in which a drilling tool (9) and a counter-boring sleeve (11) can be clamped, the chuck (40) having a clamping channel (45) with a large-diameter counter-boring sleeve clamping point (47) for clamping the counter-boring sleeve (11) and a small-diameter drilling tool clamping point (49) for clamping the drilling tool (9), according to the invention, an axial stop is formed at a stepped transition between the two clamping points (47, 49), by means of which axial stop the countersink sleeve (11) can be stopped in position, such that the countersink sleeve (11) protrudes out of the chuck (40) with a predetermined set dimension (s). According to the invention, the drilling and counter-boring tool device has an adjusting system in which the axial stop is designed as an adjusting bolt (41).

Description

Technical Field

[0001] The invention relates to a countersinking tool device according to the preamble of claim 1, a chuck according to the preamble of claim 8, an adapter according to claim 9, and a method for clamping a drilling tool and a countersinking sleeve of a countersinking tool device according to the preamble of claim 10. Background Art

[0002] Such countersinking tool devices are used, for example, in vehicle construction for the production of cylinder head bores and for flattening the opening edge region of the cylinder head bore, which, if necessary, should fulfill a sealing function.

[0003] Such a drilling and countersinking tool device has a drilling tool having a clamping shank and a drill body connected to the clamping shank. At least one drill-shaped rib extends along the rotation axis of the drill body to the drill tip. The drilling tool is guided through a countersinking sleeve, which has a countersinking sleeve cutting edge on its end side facing the drill tip. The countersinking sleeve cutting edge is set back axially from the drill tip. The following machining process can be performed by this tool combination: the drilling tool is driven into the workpiece with a drilling stroke to machine the workpiece hole. At the end of the drilling stroke, the countersinking sleeve uses its countersinking sleeve cutting edge to cut the opening edge area of ​​the workpiece hole, thereby machining the opening edge area of ​​the workpiece hole flat.

[0004] In a countersinking tool device, a drilling tool and a countersinking sleeve can be clamped in a chuck. The chuck has a clamping channel with a countersinking sleeve clamping portion with a large diameter for clamping the countersinking sleeve and a drilling tool clamping portion with a small diameter for clamping the drilling tool. An axial stop is formed at the step-shaped transition between the two clamping portions, by means of which the countersinking sleeve can be stopped in place, so that the countersinking sleeve protrudes from the chuck with a predetermined setting size / adjustment size / installation size.

[0005] The countersinking sleeve is a wearing part and needs to be replaced with a new one after several drilling processes. Alternatively, the old countersinking sleeve can be ground again and then reinserted into the chuck. In this case, there is the problem that the axial setting dimension of the countersinking sleeve, with which the countersinking sleeve protrudes from the chuck, is changed due to the machining. Therefore, the relative position between the drilling tool and the remachined countersinking sleeve in the axial direction must be coordinated with each other in a complex manufacturing process.

[0006] DE 10 2019 203 531 A1 discloses a drilling / chamfering tool having a drill head with a clamping sleeve extending in the longitudinal direction, which is designed to accommodate and fix the drill head in a variable length. US 2005 / 0047882 A1 discloses a tool having a drill head and a countersink drill fastened to the drill head. The drill head has a protruding profile rib and at least one chip flute. The countersink drill comprises a plurality of adjustable inserts. Summary of the invention

[0007] The object of the present invention is to provide a countersinking tool device in which the axial position of the countersinking sleeve in the chuck can be adjusted in a manner that is simpler in terms of production technology than in the prior art.

[0008] This object is achieved by the features of claim 1, 8, 9 or 10. Preferred developments of the invention are disclosed in the dependent claims.

[0009] The invention is based on a countersinking tool device with a chuck, in which a drilling tool and a countersinking sleeve can be clamped. The chuck has a clamping channel with a countersinking sleeve clamping part with a large diameter for clamping the countersinking sleeve and a drilling tool clamping part with a small diameter for clamping the drilling tool. The countersinking sleeve clamping part with a large diameter is arranged directly at the chuck outlet. In contrast, the drilling tool clamping part with a small diameter is axially spaced therefrom. An axial stop is formed at the step-shaped transition between the two clamping parts, by means of which the countersinking sleeve can be stopped in place. As a result, the countersinking sleeve can be extended from the chuck with a predetermined set size. According to the invention, the countersinking tool device has an adjustment system, by means of which the axial position of the countersinking sleeve in the chuck can be adjusted in a manufacturing-technically simple manner. When the countersinking sleeve is removed from the chuck, the adjustment screw is adjusted. In the adjustment system, the axial stop is designed as an adjustment screw. When the adjusting screw is turned, the countersink setting size can be easily adjusted in terms of production technology.

[0010] In one technical implementation, the adjusting screw can be a hollow screw with an annular threaded shank with an external thread. The hollow screw can surround the opening of the drilling tool clamping part with a small diameter. In this case, the inner diameter of the hollow screw is preferably designed to be larger than the diameter of the drilling tool clamping part, so that the adjusting screw does not form an interfering contour when the drilling tool is inserted.

[0011] A mating thread that interacts with the adjusting screw can be formed at the step-shaped transition between the two clamping locations.

[0012] The chuck can have a spindle receptacle for a machine spindle of a machine tool on its rear side. The small-diameter drilling tool clamping area can be opened in the direction of this spindle receptacle, for example to enable the supply of coolant to a countersinking tool. In this case, a tool access for actuating the adjusting screw is also provided in a dual function.

[0013] In a specific embodiment variant, the adjustment system can have an adapter which is designed with a hollow cylindrical tool inner contour (e.g. hexagonal) and a driver. With such an adapter, the adjustment process can be carried out in the following steps: First, the adapter is inserted into the clamping part with a larger diameter until it abuts against the adjusting screw. The adapter and the adjusting screw are thus non-rotatably connected to each other via the driver. The adapter - unlike the countersinking sleeve - can be inserted into the clamping part of the countersinking sleeve with a loose fit in the cold state of the chuck.

[0014] The hollow cylindrical tool inner contour can be designed to be open in the direction of the spindle receptacle to provide a tool access from the rear spindle receptacle to the adjusting screw. During the adjustment process, the screwing tool is guided from the rear spindle receptacle via the small-diameter drilling tool clamping area until the screwing tool engages with the hollow cylindrical tool inner contour of the adapter. In this way, the screwing movement of the screwing tool can be transmitted to the adjusting screw - with the adapter interposed. At the end of the adjustment process, the screwing tool and the adapter are removed from the chuck.

[0015] In a further development, the adapter can have a countersinking sleeve receptacle. During the adjustment process, the countersinking sleeve is inserted into the countersinking sleeve receptacle of the adapter. The countersinking sleeve is spaced apart from the axial stop of the chuck by a predetermined calculated dimension. Furthermore, the adjustment system can have a camera for optically detecting the axial position of the countersinking sleeve, in particular the top end of the countersinking sleeve, inserted into the adapter. The camera is signal-connected to an electronic evaluation unit, which determines the countersinking sleeve set size during the adjustment process taking into account the calculated dimension.

[0016] With regard to process-reliable optical detection of the axial position of the countersinking sleeve, the following measures are advantageous: the adapter can be constructed in two parts, specifically with an adapter part that rotates during the adjustment process and an adapter part that does not rotate during the adjustment process. The rotating adapter part is non-rotatably connected to the adjusting screw via a driver. In contrast, a countersinking sleeve receptacle is formed in the non-rotating adapter part. Accordingly, the countersinking sleeve does not rotate during the adjustment process, thereby enabling process-reliable optical camera detection. The non-rotating adapter part can be supported on the chuck via a torque support.

[0017] In a specific embodiment variant, the chuck is a shrink chuck, the clamping channel of which, at ambient temperature and in the unequipped state, has an inner diameter that is reduced relative to the diameter of the countersinking sleeve and the clamping shank. Under the action of heat, the clamping channel of the shrink chuck can expand. As a result, the drilling tool and the countersinking sleeve can be inserted into the expanded clamping channel. When cooling, the shrink chuck can be shrunk onto the countersinking sleeve and the clamping shank of the drilling tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] in:

[0020] Figures 1 to 5 Different views are shown, according to which the countersinking tool arrangement is illustrated. DETAILED DESCRIPTION

[0021] In order to more simply understand the present invention, first refer to Figures 3 to 5 , which shows a comparative example not included in the present invention. Figure 3 1 shows a workpiece 1 machined with a countersinking tool. With the aid of the countersinking tool, a flat workpiece surface 3 is machined flat to the theoretical dimensions. In addition, a hole 5 is machined into the solid material of the workpiece in the workpiece surface 3 with the aid of the countersinking tool. The hole 5 transitions into the opening edge region of the hole 5 or the flat workpiece surface 3 at the hole chamfer 7.

[0022] With the help of the following Figure 4 and 5 Described drilling and countersinking tool processing in Figure 3 The workpiece geometry is shown in Figures 4 to 5 The countersinking tool is constructed in two parts and has a drilling tool 9 and a countersinking sleeve 11. The drilling tool 9 is constructed as a spiral drilling tool with a clamping shank 13 and a drill body connected to the clamping shank. The drill body is constructed as a double-edged tool and has a total of two drill-shaped ribs 17, which extend spirally along the rotation axis R of the spiral drilling tool 9 to the top of the drill. The two drill-shaped ribs 17 are spaced apart from each other in the circumferential direction of the drill by a drill chip groove 19. In addition, the drill-shaped ribs 17 are implemented to be point-symmetrical to each other relative to the rotation axis R.

[0023] Each of the drill chip flutes 19 extends in the direction of the drill tip to the end side, and is formed at a transversely extending main cutting edge 21 on the corresponding drill-shaped rib 17. The chip surface of the drill chip flute 19 and the end-side free surface of the drill tip converge at the main cutting edge 21. In addition, the chip surface of the drill chip flute 19 transitions to a supporting chamfer at the back of the drill at a drill longitudinal edge 25 extending helically in the longitudinal direction of the drill. The main cutting edge 21 of the drilling tool 9 and the spirally extending drill longitudinal edge 25 are connected at the end side, radially outer tip 29 ( Figure 4 ) will meet at .

[0024] exist Figure 4 In the embodiment of the present invention, the drilling tool 9 is guided through the countersinking sleeve 11. The countersinking sleeve has two countersinking sleeve cutting edges 37 on its end side facing the drill tip, which are diagonally opposite to the rotation axis R and are set back from the drill tip of the drilling tool 9 by an axial distance Δa ( Figure 5 The two countersinking sleeve cutting edges 37 are spaced apart from each other in the circumferential direction by a chip cavity 39 .

[0025] According to the invention, the drilling tool 9 and the countersinking sleeve 11 are realized as two components that are independent of each other. The drilling tool 9 and the countersinking sleeve 11 can be loosely inserted into each other with a movement gap. In order to carry out the drilling process, the drilling tool 9 and the countersinking sleeve 11 can be inserted into the shrink chuck 40 ( Figure 5 ), in the shrink chuck, the drilling tool 9 and the countersinking sleeve 11 are clamped independently of each other. On the contrary, in the unclamped state, the drilling tool 9 is loosely supported in the countersinking sleeve 11 with a movement clearance.

[0026] In order to process Figure 3 In the workpiece geometry shown in FIG. 3 , at the workpiece surface 3 that has not yet been machined, the countersinking tool is driven into the solid material of the workpiece to the theoretical hole depth with a drilling stroke, thereby forming a workpiece hole 5. At the end of the drilling stroke (at Figure 4 The countersinking sleeve 11 uses its countersinking sleeve cutting edge 37 to cut and engage with the opening edge area of ​​the workpiece hole 5, thereby processing the opening edge area of ​​the hole 5 flat.

[0027] Furthermore, the drilling tool 9 has two chamfering edges 26 at the level of the countersinking blade 37. Figure 4 Only one of the chamfering edges 26 is shown in FIG. 5 . The blade diameter of the corresponding chamfering edge 26 increases conically in the direction of the clamping shank 13 . During the drilling process, the chamfering edge 26 of the drilling tool 9 processes the hole chamfer 7 . Figure 4, - viewed in the overlap region on the circumferential side - each of the countersinking cutting edges 37 overlaps one of the chamfering cutting edges 26. For this purpose, the countersinking cutting edges 37 are arranged in a height position which, viewed in the axial direction, is between the end of the chamfering cutting edge 26 facing away from the drill tip and the end of the chamfering cutting edge 26 facing the drill tip. At the end of the drilling stroke, the hole chamfer 7 is produced and the workpiece surface 3 is flattened.

[0028] exist Figure 5 In the embodiment of the present invention, the countersinking tool is clamped in the shrink chuck 40. Accordingly, the shrink chuck 40 has a clamping channel 45, which is configured with a countersinking sleeve clamping portion 47 with a large diameter for clamping the countersinking sleeve 11 and a drilling tool clamping portion 48 with a small diameter for clamping the clamping shank 13. The countersinking sleeve clamping portion 47 with a large diameter is arranged directly at the outlet of the clamping channel 45, while the drilling tool clamping portion 49 with a smaller diameter is axially spaced therefrom.

[0029] At ambient temperature and in the unequipped state, the clamping channel 45 of the chuck 40 has an inner diameter that is reduced relative to the diameter of the countersinking sleeve 11 and the clamping shank 13. Under the action of heat, the clamping channel 45 of the shrink chuck 40 can be expanded so that the drilling tool 9 and the countersinking sleeve 11 can be inserted into the expanded clamping channel 45. When cooling, the shrink chuck 40 shrinks onto the countersinking sleeve 11 and the clamping shank 13 of the drilling tool 9.

[0030] The countersinking sleeve 11 of the countersinking tool is a consumable part. After multiple drilling processes, it is removed from the chuck 40 and ground again. Then, the reprocessed countersinking sleeve 11 is reinserted into the chuck 40. In this case, Figures 3 to 5 In the comparative example, there is a problem that the axial setting dimension s ( Figure 5 ). Therefore, it is necessary to fine-tune the relative position between the drilling tool 9 and the countersinking sleeve 11 in the axial direction in a complicated manufacturing process to ensure that Figure 4 Or the chamfered transition from the hole 5 to the workpiece surface 3 shown in 5.

[0031] To ensure the chamfered transition of the hole 5 to the workpiece surface 3, the countersinking tool device according to the invention has an adjustment system described below, which can be used to adjust the axial position of the countersinking sleeve 11 in a manufacturingly simple manner, especially after such regrinding.

[0032] As from Figure 1In FIG. 2 , it is known that the adjustment system has an adjusting screw 41 as an axial stop. The adjusting screw is implemented as a hollow screw with an annular threaded shank with an external thread. The hollow screw surrounds the passage of the clamping part 49 of the drilling tool with a small diameter. Here, the inner diameter of the hollow screw is designed to be larger than the diameter of the drilling tool clamping part 49. The adjusting screw 41 can be screwed into the matching thread formed at the stepped transition part.

[0033] The chuck 40 has a Figure 5 The spindle receptacle 46 of the machine spindle 48 of the machine tool indicated in FIG. A small-diameter drilling tool clamping area 49 is axially open in the direction of this spindle receptacle 45. As a result, a tool access is created on the rear side of the chuck for operating the adjusting screw 41 as described below.

[0034] In order to rotate and operate the adjusting screw 41, the adjusting system has an adapter 51, which is designed with a hollow cylindrical tool inner contour 53 (for example, a hexagonal inner shape) and a driver 55. In addition, the adapter 51 is designed in two parts, specifically with an adapter part 57 that rotates during the adjustment process and an adapter part 58 that does not rotate during the adjustment process. Figure 3 In the embodiment, the non-rotating adapter part 58 is non-rotatably connected to the adjusting screw 41 via the driver 55. The non-rotating adapter part 58 has a countersinking sleeve receiving portion 59, into which the countersinking sleeve 11 can be inserted. Figure 5 The countersinking sleeve 11 is spaced apart from the adjusting screw 41 by a predetermined calculated dimension v. The non-rotatable adapter part 58 is supported on the chuck 40 in a non-rotatable manner via a torque support 60 .

[0035] The adjustment process can be carried out by means of the adapter 51 in the following steps: First, the adapter 51 is inserted into the large-diameter countersinking bushing clamping point 47 of the shrink chuck 40 in the cold state until it abuts against the adjusting screw 41. The non-rotating adapter part 57 and the adjusting screw 41 are thus non-rotatably connected to one another via the driver 55. The hollow cylindrical tool inner contour 53 of the adapter 51 is open in the direction of the rear spindle receptacle 46. In this way, a tool access is provided for the adjusting screw 41.

[0036] After the adapter 51 is positioned in the countersinking sleeve clamping area 47, a screwing tool 61 (e.g., a quill) is inserted from the rear spindle receptacle 46 through the small-diameter drilling tool clamping area 49 until it engages with the hollow cylindrical tool inner contour 53 of the adapter 51. As a result, the screwing movement of the screwing tool 61 can be transmitted to the adjusting screw 41 via the rotating adapter part 57.

[0037] So outside Figure 5It is known from the figure that the adjustment system has a camera 63 for optically detecting the axial position of the countersinking sleeve 11. For this purpose, the camera 63 is pointed directly at the top of the countersinking sleeve. The camera 63 is connected to an electronic evaluation unit 65, by means of which the countersinking sleeve setting dimension s can be determined during the adjustment process - taking into account the calculated dimension v-. By rotating the screwing tool 61, the desired countersinking sleeve setting dimension s can be achieved.

[0038] After the predetermined countersinking sleeve setting dimension s is reached by correspondingly rotating the screwing tool 61, the adapter 51 and the screwing tool 61 are removed from the shrinking chuck 40. Subsequently, the shrinking chuck 40 is heated to insert the countersinking sleeve 11 into the countersinking sleeve clamping area. Subsequently, the device is cooled again, whereby the shrinking chuck 40 is shrunk onto the countersinking sleeve 11.

[0039] List of Reference Numerals

[0040] 1 Workpiece

[0041] 3. Workpiece surface

[0042] 5 holes

[0043] 7 hole chamfer

[0044] 9 Drilling tool

[0045] 11 Spot facing sleeve

[0046] 13 Clamping handle

[0047] 17 drill bit rib

[0048] 19 chip groove

[0049] 21 Main Blade

[0050] 25 Drill bit longitudinal edge

[0051] 29 blade tip

[0052] 37 countersinking blade

[0053] 39 Chip cavity

[0054] 40 Chuck

[0055] 41 Adjusting bolt

[0056] 45 clamping channel

[0057] 46 spindle receiving part

[0058] 47 Spot facing sleeve clamping part

[0059] 48 Machine tool spindle

[0060] 49 Drilling tool clamping part

[0061] 51 Adapter

[0062] 53 Tool inner contour

[0063] 55 driving parts

[0064] 57 Rotating adapter part

[0065] 58 Non-rotating adapter part

[0066] 59 spot facing sleeve receiving part

[0067] 60 Torque support

[0068] 61 screwdriver

[0069] 63 cameras

[0070] 65 Electrical Evaluation Unit

[0071] Δa axial distance

[0072] s spot facing bushing setting size

[0073] vCalculate size

Claims

1. A drilling and countersinking tool device with a chuck (40), in which a drilling tool (9) and a countersinking sleeve (11) can be clamped, wherein: The chuck (40) has a clamping channel (45), which has a large-diameter countersinking sleeve clamping portion (47) for clamping the countersinking sleeve (11) and a small-diameter drilling tool clamping portion (49) for clamping the drilling tool (9), wherein an axial stop portion is formed at a step-shaped transition portion between the two clamping portions (47, 49), and the countersinking sleeve (11) can be stopped in place by the axial stop portion so that the countersinking sleeve (11) extends out of the chuck (40) with a predetermined setting size (s), wherein the countersinking tool device has an adjustment system, in which the axial stop portion is configured as an adjustment bolt (41), and when the adjustment bolt (41) is screwed, the setting size (s) of the countersinking sleeve can be adjusted.

2. The countersinking tool device according to claim 1, characterized in that: The adjusting screw (41) is a hollow screw having an annular threaded shank with a thread, and / or in particular, the hollow screw surrounds an entry portion of a drilling tool clamping portion (49) of small diameter, and / or the inner diameter of the hollow screw is designed to be larger than the diameter of the drilling tool clamping portion (49), in particular, a mating thread that interacts with the adjusting screw (41) is constructed at a stepped transition portion, and / or The chuck (40) has a spindle receptacle (46) for a machine spindle (48) of a machine tool on its rear side, and a small-diameter drilling tool clamping area (49) is open in the direction of the spindle receptacle (46), whereby a tool access for actuating the adjusting screw (41) can be provided on the rear side of the chuck.

3. The countersinking tool device according to claim 2, characterized in that: The adjustment system comprises an adapter (51) which is designed with a tool inner contour (53) and a driver (55), wherein the adjustment process can be performed by means of the adapter (51) by means of the following steps: - in particular, in the cold state of the chuck (40), the adapter (51) is inserted into the clamping area (47) of the larger diameter until it abuts against the adjusting screw (41), so that the adapter (51) and the adjusting screw (41) are connected to each other in a rotationally fixed manner via the driver (55) and the tool inner contour (53) is open in the direction of the spindle receptacle (46); - inserting a screwing tool (61) from the rear spindle receptacle (46) via the small-diameter drilling tool clamping point (49) until the screwing tool engages with the tool inner contour (53) of the adapter (51), so that the screwing movement of the screwing tool (61) can be transmitted to the adjusting screw (41) via the adapter (51), and At the end of the adjustment process, the screwing tool (61) and the adapter (51) are removed from the chuck (40).

4. The countersinking tool device according to claim 3, characterized in that: The adapter (51) has a countersinking sleeve receptacle (59) into which the countersinking sleeve (11) is inserted during the adjustment process, in particular such that the countersinking sleeve (11) is spaced apart from an axial stop of the chuck (40) by a predetermined calculated dimension (v).

5. The countersinking tool device according to claim 4, characterized in that: The adjustment system has a camera (63) for optically detecting the axial position of the countersinking sleeve (11), in particular the countersinking sleeve tip, the camera (63) being signal-connected to an electronic evaluation unit (65), with the aid of which the countersinking sleeve set dimension (s) is determined during the adjustment process, in particular taking into account the calculated dimension (v).

6. The countersinking tool device according to claim 4 or 5, characterized in that: The adapter (51) is constructed in two parts, comprising an adapter part (57) which is connected to the adjusting screw (41) in a rotationally fixed manner via a driving member (55) and rotates during the adjustment process, and an adapter part (58) which does not rotate during the adjustment process and has a countersinking sleeve receiving portion (59), so that the countersinking sleeve (11) does not rotate during the adjustment process, thereby enabling process-reliable optical camera detection and, in particular, the non-rotating adapter part (58) is supported on the chuck (40) via a torque support portion (60).

7. A countersinking tool device according to any one of the preceding claims, characterized in that: The chuck (40) is a shrink chuck. At ambient temperature and in an unequipped state, the clamping channel (45) of the chuck has an inner diameter that is reduced relative to the diameter of the countersinking sleeve (11) and the clamping shank (13). Under the action of heat, the clamping channel (45) of the shrink chuck (40) can expand, so that the drilling tool (9) and the countersinking sleeve (11) can be inserted into the expanded clamping channel (45). When cooling, the shrink chuck (40) can shrink onto the countersinking sleeve (11) and the clamping shank (13).

8. A chuck (40) for a countersinking tool device according to any one of the preceding claims, in which a drilling tool (9) and a countersinking sleeve (11) can be clamped, wherein: The chuck (40) has a clamping channel (45), which has a large-diameter countersinking sleeve clamping portion (47) for clamping the countersinking sleeve (11) and a small-diameter drilling tool clamping portion (49) for clamping the drilling tool (9), wherein an axial stop portion is formed at a step-shaped transition portion between the two clamping portions (47, 49), and the countersinking sleeve (11) can be stopped in place by the axial stop portion so that the countersinking sleeve (11) extends out of the chuck (40) with a predetermined set size (s). The chuck (40) is characterized in that the chuck (40) has an adjustment system, in which the axial stop portion is configured as an adjustment bolt (41), and when the adjustment bolt (41) is screwed, the countersinking sleeve set size (s) can be adjusted.

9. An adapter (51) for an adjustment system of a countersinking tool device according to any one of claims 1 to 7, wherein: The adapter (51) is designed with a tool inner contour (53) and a driver (55), wherein an adjustment process can be performed by the following steps via the adapter (51): - in particular, when the chuck (40) is in the cold state, the adapter (51) is inserted into the clamping area (47) with a larger diameter until it comes into contact with the adjusting screw (41), so that the adapter (51) and the adjusting screw (41) are connected to each other in a rotationally fixed manner via the driver (55) and the tool inner contour (53) is open in the direction of the spindle receptacle (46); - inserting a screwing tool (61) from the rear spindle receptacle (46) via the small-diameter drilling tool clamping point (49) until the screwing tool engages with the tool inner contour (53) of the adapter (51), so that the screwing movement of the screwing tool (61) can be transmitted to the adjusting screw (41) via the adapter (51), and At the end of the adjustment process, the screwing tool (61) and the adapter (51) are removed from the chuck (40).

10. A method for clamping a drilling tool (9) and a countersinking sleeve (11) of a drilling and countersinking tool device according to any one of claims 1 to 7, wherein: The chuck (40) has a clamping channel (45), the clamping channel having a large-diameter countersinking sleeve clamping portion (47) for clamping the countersinking sleeve (11) and a small-diameter drilling tool clamping portion (49) for clamping the drilling tool (9), wherein an axial stop portion is formed at a step-shaped transition portion between the two clamping portions (47, 49), and the countersinking sleeve (11) is stopped in place by the axial stop portion so that the countersinking sleeve (11) extends out of the chuck (40) with a predetermined set size (s), characterized in that the countersinking tool device has an adjustment system, in which the axial stop portion is configured as an adjustment bolt (41), and when the adjustment bolt (41) is screwed, the countersinking sleeve set size (s) is adjusted.

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