Hinge drill jig and its center bit for manufacturing hinge drilling pattern in furniture board

Abstract

A column-top drill bit (12) for a hinge drill jig (10) used to create a drill pattern for a hinge (4) in a furniture panel (3a), the column-top drill bit comprising: at least one rod (40) rotatable about a rotation axis (39) for clamping the column-top drill bit (12) into the hinge drill jig (10); at least one cutting head (41) having at least one end-side cutting edge (13) for creating a cylindrical recess (7) in the furniture panel (3a); at least one chip breaker (14) for crushing the generated chip material, wherein the at least one chip breaker (14) is at least partially tapered to push the chip material to be crushed from the rotation axis (39) in a direction away from the rotation axis (39). A hinge drill jig for creating a drill pattern for a hinge in a furniture panel, the hinge drill jig having at least one of the column-top drill bits.

Description

Technical Field

[0001] This utility model relates to a column top drill bit for a hinge drilling die, which is used to create a drill pattern for hinges in furniture panels.

[0002] Furthermore, this utility model relates to a hinge drill die for creating a drill pattern for hinges in a furniture board, the hinge drill die having at least one column top drill bit of the type to be described. Background Technology

[0003] A hinge drilling jig has been marketed by the applicant for many years under the name "ECODRILL". This relates to a simple-to-operate and portable handheld device for precisely drilling holes in furniture components. A specific hinge drilling pattern can be set, allowing a column-top drill bit to be inserted into the furniture component at a predetermined location using a handheld drill to create a cylindrical hole for receiving a hinge cup. In addition to the central column-top drill bit, two lateral pin drill bits are additionally provided, having a smaller diameter than the column-top drill bit, and are used to create additional cylindrical holes for receiving expandable retaining pins of the furniture hinge.

[0004] The arrangement of a chip breaker at the core drill bit is disclosed, for example, in DE 3315539 A1. By means of the chip breaker, the generated chips are broken and prevented from tangling and accumulating at the drill bit. The chip breaker has the form of a protrusion or plate and is arranged radially relative to the drill bit.

[0005] A significant problem arises, particularly when drilling medium-density fiberboard (MDF) or hardwood boards, where extremely long chips can form that wrap around the drill bit, become entangled, and scrape the surface of the furniture board. This can render furniture boards, often with high-value and expensive decorative cladding, unusable and discarded. Furthermore, the formation of long chips can prevent the drill bit from returning to its original position, and the resulting blockage of the chip chamber can lead to severe overheating. Utility Model Content

[0006] The objective of this invention is to propose an improved column top drill bit and hinge drill jig compared to existing technologies.

[0007] According to this invention, this is achieved by means of features according to this invention. Other advantageous embodiments of this invention are defined in the embodiments.

[0008] According to this invention, a column-top drill bit for creating hinge drilling patterns in furniture panels comprises: at least one rod rotatable about a rotation axis for clamping the column-top drill bit into the hinge drilling die; at least one cutting head having at least one end-side main cutting edge for creating a columnar recess in the furniture panel; and at least one chip breaker for crushing the generated chip material. The at least one chip breaker is at least partially tapered to push the chip material to be crushed from the rotation axis in a direction away from the rotation axis. According to this invention, at least one chip breaker is at least partially tapered to push the chip material to be crushed from the rotation axis in a direction away from the rotation axis.

[0009] With the help of the proposed chip breaker, long chips can be pushed from the rotation axis of the drill bit along the conical or truncated conical circumference of the chip breaker to the edge of the borehole, where the chips are broken by the rotating chip breaker.

[0010] At least one chip breaker may have at least one cutting surface for crushing chip material and / or at least one preferably recessed and / or tapered discharge channel for discharging chip material.

[0011] According to one embodiment, at least one chip breaker may be configured as a component separate from the top drill bit, which is fixedly connected, preferably bonded, welded or press-fitted to the top drill bit.

[0012] Alternatively, the chip breaker and the drill bit can be loosely connected to each other via at least one form-fit connection. In the connected state, the chip breaker is torsionally connected to the drill bit via at least one form-fit connection. The chip breaker can be easily replaced in case of possible damage or wear.

[0013] In another embodiment, at least one chip breaker may be configured as a single piece together with the top drill bit.

[0014] According to the present invention, a hinge drill die for creating a drilled pattern for a hinge in a furniture board has at least one column-top drill bit according to the present invention, which is used to create a cylindrical recess in the furniture board for receiving a hinge cup. Attached Figure Description

[0015] Other details and advantages of this invention are given in the following description of the accompanying drawings.

[0016] Figure 1a , Figure 1b The three-dimensional view shows furniture having a solid frame and movable furniture parts relative to the solid frame, as well as movable furniture parts. Figure 2a , Figure 2bAn embodiment of the hinge drill jig is shown in two different views with the tensioner in the tensioned position and the release position. Figure 3a , Figure 3b The hinged drill jig is shown in the front view and the top view, with the tensioner in the tensioned position. Figure 4a , Figure 4b The diagram shows a hinged drill jig with the tension rod in the released position and a hinged drill jig with the tension rod in the tensioned position. Figure 5a , Figure 5b The partially sectional view shows a hinged drill jig with the tension rod in the released position and a hinged drill jig with the tension rod in the tensioned position. Figure 6a , Figure 6b The diagram shows a cross-section of a hinged drill jig with the tension rod in the released position, and a side view of a hinged drill jig with the tension rod in the tensioned position. Figures 7a to 7c Different views of a top drill bit with a chip breaker are shown. Figure 8a , Figure 8b The top drill bit in its assembled position is shown in two different views. Detailed Implementation

[0017] Figure 1a Furniture 1 is shown, which has furniture components 3 in the form of a furniture body 2 and furniture panels 3a, which are movably supported relative to the furniture body 2. The movable furniture components 3 are pivotally supported relative to the furniture body 2 by two or more hinges 4.

[0018] Hinges 4 each have a hinge arm 5 to be fixed to a movable furniture part 2 and a hinge cup 6 to be fixed to a movable furniture part 3. The hinge cup 6 is pivotally connected to the hinge arm 5, for example, via at least one hinge link. The hinge cup 6 is fixed to the movable furniture part 3 via at least one fixed flange 9.

[0019] Figure 1b A movable furniture component 3 in the form of a furniture panel 3a is shown in perspective. In order to fix the hinge cup 6 to the furniture panel 3a, a cylindrical recess 7 is provided, which preferably has a diameter of 35 mm, wherein the hinge cup 6 is at least partially accommodated in the cylindrical recess 7 when assembled to the furniture panel 3a.

[0020] Attached to the cylindrical recess 7, two lateral pin holes 8a and 8b are provided, which are configured to accommodate expandable pins (not shown) of the hinge 4. Such pins can be arranged on the bottom side of the fixing flange 9 of the hinge 4.

[0021] The cylindrical recess 7 for accommodating the hinge cup 6 and the pin holes 8a and 8b for accommodating the hinge 4 are arranged at a predetermined spacing relative to the end side 19a and the side side 19b and 19c of the furniture board 3a, respectively.

[0022] However, the two lateral pin holes 8a and 8b are not mandatory, because the fixing flange 9 of the hinge 4 can also be fixed to the furniture board 3a by conventional threaded fasteners.

[0023] The cylindrical recess 7 for accommodating the hinge cup 6 and the pin holes 8a and 8b for accommodating the hinge 4 can be accessed by the hinge drill 10, which will also be described later. Figure 2a The hinge drill bit is used to create a drill pattern for the hinge 4 in the furniture board 3a.

[0024] Figure 2a A possible embodiment of the hinge drill jig 10 is shown in a perspective view.

[0025] The hinge drill jig 10 includes: - At least one matrix 11, - At least one column-top drill bit 12 for creating a columnar recess 7 for receiving a hinge cup 6 in the furniture panel 3a. - At least two clamping devices 16a, 16b spaced apart from each other, said clamping devices being used to clamp furniture board 3a relative to the base 11. - At least one stop device 28 ( Figure 2b ), used to attach the substrate 11 to the end side 19a of the furniture board 3a ( Figure 1b ) place, - Tensioning rod 15, by which the at least two clamping devices 16a, 16b can be jointly operated, and / or wherein at least one stop device 28 is arranged in the central region of at least one base 11 between the at least two clamping devices 16a, 16b.

[0026] The two clamping devices 16a and 16b are movably supported together between the tensioned and released positions by means of the tension rod 15, which can prevent erroneous operation of the clamping devices 16a and 16b.

[0027] The clamping devices 16a and 16b may each have a fixing element 17a and 17b that is preferably rotatably supported, by which the furniture board 3a can be pre-clamped relative to the base 11.

[0028] In order to finally fix the furniture board 3a relative to the base 11, a movable, preferably pivotable tension bar 15 is provided, wherein by manipulating the tension bar 15, a substantially uniform clamping force can be applied to the furniture board 3a via clamping devices 16a, 16b.

[0029] The column top drill bit 12 can be rotated by a rotary drive device 18a, wherein the column top drill bit 12 can be rotated by means of a handheld drill rig 31 ( Figure 4a , Figure 4b The rotary drive device 18a is rotated and thus driven.

[0030] Attached to the column top drill bit 12, two additional pin drill bits 20 are also provided, which are configured for drilling two pin holes 8a and 8b. Figure 1b The pin holes 8a and 8b are provided to accommodate the pins of the hinge 4.

[0031] However, as already mentioned, the manufacture of pin holes 8a and 8b can be omitted, since threaded fasteners for fixing flange 9 for fixing hinge 4 can also be provided.

[0032] These two pin drill bits 20 also have rotary drive devices 18b and 18c respectively, wherein the pin drill bits 20 can be put into a rotating state by driving the rotary drive devices 18b and 18c with the help of a handheld drill 31.

[0033] Conversely, if instead of drilling two pin holes 8a, 8b, only a punch in the form of a mark is made in the furniture panel 3a for placing threaded fasteners, an additional element in the form of a spacer (not visible here) is provided. The spacer, preferably configured as a C-clamp, can be inserted onto the rod below the rotary drive 18b, 18c. In this way, when driven by the hand-held drill 31, the rotary drive 18b, 18c can only move in the direction of the base 11 over a small area, thus essentially only sinking the centering tip of the pin drill bit 20 into the furniture panel 3a to make the mark.

[0034] The tensioning rod 15 is movably supported between the tensioned position and the relaxed position. Figure 2a The tensioning position of the tensioning rod 15 is shown, in which at least one rotary drive device 18a, 18b, 18c of the hinge drill jig 10 can be accessed, preferably all of the provided rotary drive devices 18a, 18b, 18c.

[0035] Conversely, if the tension lever 15 is in the released position, access to one of the rotary drives 18a, 18b, 18c is prevented, and preferably all of the rotary drives 18a, 18b, 18c are prevented from being accessed. This constitutes a significant safety aspect, because the rotary drives 18a, 18b, 18c are only accessible by means of the handheld drill 31 when the furniture panel 3a is fixed relative to the base 11 of the hinge drill 10 as specified.

[0036] At least one stop 21a is provided, which is movably and preferably flip-able supported at the hinge drill jig 10 and / or has at least one scale 22a for displaying the position of the column top drill bit 12 relative to the sides 19b, 19c of the furniture panel 3a. Figure 1b The spacing of the stop 21a along the scale 22a can be determined by the clamping screw 26a.

[0037] The cutting material can be sucked through at least one suction opening 27. Preferably, at least one suction opening 27 extends obliquely toward the top drill bit 12 and / or has at least one O-ring for clamping the suction sleeve.

[0038] Figure 2b A top view of the hinged drill jig 10 is shown, in which the pivotable tension rod 15 is in the released position. In the released position of the tension rod 15, the rotary drives 18a, 18b, and 18c cannot be operated by the handheld drill 31 because the tension rod 15 blocks access to the rotary drives 18a, 18b, and 18c.

[0039] The hinge drill jig 10 may have at least one handle 23, preferably in the form of a U-shaped bow, for operating or transporting the hinge drill jig 10.

[0040] Used to make the substrate 11 abut against the end side 19a of the furniture board 3a ( Figure 1b At least one stop device 28 is arranged in the central region of at least one base 11 between at least two clamping devices 16a, 16b.

[0041] The stop device 28 may have a movable, preferably linearly movable and / or steplessly adjustable stop plate 28a for abutting against the furniture board 3a.

[0042] In the illustrated embodiment, the position of the stop plate 28a can be adjusted via at least one elongated hole 28b and / or, after adjustment, can be fixed by a rotatably supported knurled screw 28c.

[0043] Of course, in order to optimize the stepless adjustment of the stop plate 28a, other possibilities may also be provided, such as at least one self-locking adjusting wheel, a self-locking eccentric wheel, or a self-locking worm gear transmission.

[0044] The stop device 28 may have at least one window 24 that allows view of the mark 25, which is arranged or may be arranged on the furniture panel 3a. The window 24 is constructed to be relatively large, thereby providing significant readability of the mark 25.

[0045] Figure 3aThe hinged drill jig 10 is shown in a front view, which shows the top drill bit 12, the chip breaker 14, and two lateral pin drill bits 20.

[0046] It can be seen that at least one column top drill bit 12 and at least one pin drill bit 20, preferably two pin drill bits 20, are offset from each other by a certain amount X, preferably about 3 mm, in the height direction.

[0047] By offsetting the column top drill bit 12 with the lateral pin drill bit 20, the risk of longer cutting material getting stuck is reduced, and thus scratches on the decorative surface of the furniture panel 3a are reduced.

[0048] The column drill bit 12 and the pin drill bit 20 can be driven separately from each other by rotary drive devices 18a, 18b, and 18c. To drive the rotary drive devices 18a, 18b, and 18c, a handheld drill 31 and a screwdriver head 30 that can engage with the rotary drive devices 18a, 18b, and 18c are required. Figure 4a , 4b The screwdriver tip 30 can be configured as a Phillips head, a starhead head, or a Torx head, for example.

[0049] Figure 3b The hinged drill jig 10 is shown in the top view, in which the furniture panel 3a is clamped and secured by a pivot rod 15. The pivot rod 15 is thus in a tensioned position, in which the rotary drive units 18a, 18b, and 18c can be accessed using a handheld drill 31. Conversely, in the relaxed position of the tension rod 15, access to the rotary drive units 18a, 18b, and 18c is prevented.

[0050] Hinge drill jig 10 in addition to Figure 2a In addition to the stop 21a shown, there is at least one additional stop 21b, wherein the stop 21a is configured to abut against the first side 19b of the furniture panel 3a. Figure 1b At the location, and another stop 21b is provided for abutting against the second side 19c of the furniture panel 3a.

[0051] The additional stop 21b can be fixed by the locking screw 26b along the position of the scale 22b.

[0052] When not in use, the two stops 21a and 21b can be flipped into the base 11 of the hinge drill jig 10.

[0053] The distance between the column top drill bit 12 and the end side 19a of the furniture board 3a can be adjusted by the stop device 28. The stop device 28 includes a linearly movable and / or steplessly adjustable stop plate 28a, which is configured to abut against the end side 19a of the furniture board 3a.

[0054] To adjust the stop plate 28a, loosen the knurled screw 28c and move the stop plate 28a to the desired position through at least one elongated hole 28b. The pre-adjusted position of the stop plate 28a can then be secured again by the knurled screw 28c.

[0055] To read the position of the stop device 28, at least two scales 29a and 29b are provided, wherein the first scale 29a shows the distance from the center of the cylindrical recess 7 to be manufactured, and the second scale 29b shows the distance from the edge of the cylindrical recess 7 to be manufactured.

[0056] The advantage of providing two scales, 29a and 29b, is that, in conjunction with the library configurator (Korpuskonfigurator) or product catalog for drilling the cylindrical recess 7, there are two different dimensional specifications, which can be displayed through the two scales 29a and 29b. Of course, only one of the two scales 29a and 29b can be set.

[0057] According to one embodiment, at least one base 11 may have at least one receiving compartment 50 for receiving a drill jig 51, preferably configured as an assembly angle, for the hinge arm 5 of the hinge 4.

[0058] At least one magnet 52 can be used to releasably secure the drill jig 51 in the receiving compartment 50. The drill jig 51, constructed as an add-on, is used to create a drill pattern for the hinge arm 5 at the home unit 2.

[0059] Figure 4a A hinged drill jig 10 is shown, which has a base 11, a handle 23 arranged on the base 11, and a tension bar 15 pivotable relative to the base 11.

[0060] exist Figure 4a In the middle position, the tension rod 15 is in the released position, in which the tension rod 15 at least partially covers the rotary drive 18a of the drill bit 12 and thus prevents access to the rotary drive 18a. Therefore, in Figure 4a In this case, it is impossible to operate the rotary drive device 18a with the screwdriver head 30 of the handheld drill 31.

[0061] Conversely, in Figure 4b In the tensioned position, the tension rod 15 is in the tensioned position, in which the rotary drive 18a of the column drill bit 12 is freely accessible to the screwdriver head 30 of the handheld drill 31. Therefore, in the tensioned position of the tension rod 15, the cylindrical recess 7 in the furniture board 3a can be drilled at a predetermined position by driving the rotary drive 18a with the help of the handheld drill 31.

[0062] Figure 5a A partially cutaway view of the hinged drill jig 10 is shown, with the tensioning rod 15 in the released position. Tensioning devices 16a and 16b each have a shaft 33 that is guided in a gapped manner within an elongated hole 32.

[0063] Tensioner 15 rotates around axis 37 ( Figure 6a It is rotatably supported on the base 11 and / or has at least one eccentric surface 34 arranged on the tensioning rod 15, the eccentric surface being used to move at least two clamping devices 16a, 16b relative to the base 11.

[0064] The rotation axis 37 of the tensioning rod 15 is substantially the same as the rotation axis 39 of the drill bit 12. Figures 7a to 7c It extends at right angles.

[0065] Shaft 33 and clamp 35 ( Figure 6a , Figure 6b The clamp is configured to rest against the bottom side 19d of the furniture board 3a. Figure 6a , Figure 6b ) place.

[0066] At least one clamping device 16a, 16b, preferably two clamping devices 16a, 16b, has at least one accumulator 38. Figure 6b The accumulator applies force to the clamping hoop 35 towards the position where the furniture board 3a is pre-clamped.

[0067] The pre-clamped position of the shaft 33 connected to the clamp 35 can be fixed by rotatable fixing elements 17a and 17b.

[0068] However, the pre-clamping position is secured only once by the fixing elements 17a and 17b. Once the pre-clamping position is adjusted relative to the material thickness of the furniture board 3a, the clamping and loosening of the furniture board 3a are achieved solely by manipulating the tension rod 15.

[0069] Figure 5b A partially cut-away view of the hinge drill jig 10 is shown, in which the tension rod 15 is in the tensioned position.

[0070] Shaft 33 can be pivoted from the tension rod 15 according to... Figure 5a Starting from the released position and moving to according to Figure 5b In the tensioned position, the shaft 33 is located at the end of the elongated hole 32, and the tensioned position of the tensioning rod 15 is fixed by the eccentric surface 34.

[0071] Figure 6aA cross-section of the hinged drill jig 10 is shown, in which the tension rod 15 is in the released position, in which the rotary drive 18a of the top drill bit 12 cannot be accessed by the handheld drill 31 for operation.

[0072] The clamping devices 16a and 16b have at least one clamp 35 for abutting against the bottom side 19d of the furniture board 3a. This is achieved through at least one accumulator 38. Figure 6b The clamp 35 is subjected to a force in the direction that pre-clamps the furniture board 3a. At least one accumulator 38 may be constructed, for example, as a tension spring or a compression spring.

[0073] By applying force to the handle 36 against the force of the accumulator 38, the pre-clamped position of the clamp 35 can be released.

[0074] In the illustrated embodiment, the pre-clamped position of the clamp 35 is releasable by pushing the handle 36 in a downward direction (i.e., in a direction extending parallel to the rotation axis 39 of the top drill bit 12). In this way, the clamp 35 moves downward, allowing the furniture panel 3a and the hinge drill jig 10 to be oriented relative to each other or separated from each other.

[0075] If the furniture board 3a is finally correctly oriented relative to the hinge drill 10, the pre-clamping position of the furniture board 3a can be pre-fixed by the clamping elements 17a and 17b of the clamping devices 16a and 16b.

[0076] At least one column-top drill bit 12 is positioned at a distance greater than 3 mm from the zero plane, allowing the untreated surface 19e of the furniture board 3a to be positioned within this zero plane. This reduces the risk of long cutting materials getting stuck.

[0077] Figure 6b A side view of the hinged drill jig 10 is shown, in which the tension rod 15 is in the tensioned position, in which the rotary drive 18a of the top drill bit 12 can be accessed.

[0078] By means of rotation around axis 37 ( Figure 6a The pivoting tension rod 15 can finally fix the pre-clamped position, so that the cylindrical recess 7 can be drilled by driving the rotary drive device 18a with the help of the hand-held drill 31.

[0079] The accumulator 38 is schematically shown, which applies a force to the clamp 35 in the direction of the pre-clamping position of the furniture board 3a.

[0080] Figures 7a to 7c Different views of the column top drill bit 12 for the hinge drill jig 10 are shown. The hinge drill jig is used to create a drill pattern for the hinge 4 in the furniture panel 3a.

[0081] Figure 7a A view is shown of a top drill bit 12 and a chip breaker 14 arranged or potentially arranged at the top drill bit 12.

[0082] The column top drill bit 12 includes: - At least one rod 40 capable of rotating about the axis of rotation 39 for clamping the top drill bit 12 into the hinged drill jig 10. - At least one cutting head 41 having at least one end-side main cutting edge 13 for manufacturing a cylindrical recess 7 in the furniture panel 3a. - At least one chip breaker 14 for crushing the generated shredded material, wherein at least one chip breaker 14 is at least partially conical in construction so as to push the shredded material to be crushed from the axis of rotation 39 in a direction away from the axis of rotation 39.

[0083] The chip breaker 14 is configured in a conical or frustoconical shape to obliquely convey the generated chip material from the axis of rotation 39 during drilling of the cylindrical recess 7, wherein the pushed chip material can be crushed by the multiple cutting edges 43 of the rotating chip breaker 14.

[0084] According to one embodiment, the at least one chip breaker 14 is constructed substantially in a crown shape.

[0085] At least one chip breaker 14 may have at least one preferably circular opening 44 for receiving the rod 40.

[0086] According to one embodiment, at least one chip breaker 14 is configured as a component separate from the top drill bit 12, which is fixedly connected, preferably bonded, welded or pressed to the top drill bit 12.

[0087] Alternatively, the chip breaker 14 and the top drill bit 12 can be releasably connected to each other via at least one form-fit connection. In the connected state, the chip breaker 14 is connected to the top drill bit 12 in a torsion-resistant manner via the form-fit connection. In case of possible damage or wear, the chip breaker 14 can be easily replaced.

[0088] Alternatively, it is possible that at least one chip breaker 14 is constructed as a single piece together with the top drill bit 12.

[0089] At least one chip breaker 14 may have at least one, preferably recessed and / or tapered, discharge channel 45 for discharging chip material.

[0090] Preferably, a plurality of recessed and / or tapered discharge channels 45 are provided for discharging shavings.

[0091] In the illustrated embodiment, the discharge channel 45 is constructed in a substantially semi-elliptical shape and / or uniformly distributed on the conical or truncated conical circumferential surface of the at least one chip breaker 14 in a top view.

[0092] At least one cutting surface 43 for crushing shredded material can be arranged between two adjacent discharge channels 45.

[0093] In the illustrated embodiment, at least one chip breaker 14 has twelve discharge channels 45 and / or twelve cutting surfaces 43.

[0094] According to one possible embodiment, the discharge channel 45 can taper, preferably within an angle range of 20° and 30°.

[0095] The column top drill bit 12 may have at least one, preferably lateral and / or connected plate-shaped cutting surface 46 for crushing cutting material, and / or at least one centering tip 42 for centering the column top drill bit 12 at the furniture board 3a.

[0096] The longitudinal direction of the cutting surface 46 can extend substantially parallel to the rotation axis 39 of the top drill bit 12.

[0097] In the illustrated embodiment, in addition to at least one main cutting edge 13, the top drill bit 12 also has at least one additional, preferably pointed, end cutting edge 47.

[0098] Figure 7b A chip breaker 14 is shown arranged at the top drill bit 12, wherein the chip breaker 14 is arranged behind the cutting head 41 in the feed direction of the top drill bit 12.

[0099] Figure 7c The chip breaker 14, located at the top of the drill bit 12, is shown in cross-section.

[0100] According to a preferred embodiment, the maximum diameter of at least one chip breaker 14 is designed to be smaller than the minimum diameter of at least one cutting head 41. This ensures that material removal from the furniture board 3a is preferably performed solely by the cutting head 41, and not by the chip breaker 14.

[0101] The conical or truncated cone-shaped chip breaker 14 has two base surfaces of different sizes spaced apart from each other along the axis of rotation 39, wherein the larger base surface of the chip breaker 14 has a greater distance from the cutting head 41 compared to the smaller base surface.

[0102] At least one chip breaker 14 is arranged at the bar 40 and / or placed on the cutting head 41 in a manner adjacent to the cutting head 41.

[0103] The cone angle of at least one chip breaker 14 can be between 50° and 90°, preferably between 70° and 80°.

[0104] The length of at least one chip breaker 14, measured in the direction of the rotation axis 39, can be designed to be less than or equal to the maximum length of the cutting head 41 at which it appears.

[0105] Figure 8a The top drill bit 12 in the assembled position is shown in cross-section. The cutting head 41 may have a centering tip 42, at least one end-side main cutting edge 13 and end-side cutting edge 47.

[0106] A tapered or truncated cone-shaped chip breaker 14 is arranged behind the cutting head 41 in the feed direction of the top drill bit 12, and has multiple discharge channels 45 for discharging chip material distributed on the circumferential surface of the chip breaker 14 and / or multiple cutting surfaces 46 for crushing chip material distributed on the tapered circumferential surface of the chip breaker 14.

[0107] Through these two pin drill bits 20, pin drill holes 8a and 8b can be made to accommodate the hinge 4. Figure 1b ).

[0108] Figure 8b A top drill bit 12 with a chip breaker 14 is shown in a view from below. The base 11 of the hinged drill jig 10 has at least one mating surface 48 and / or narrow portion 49 arranged adjacent to the top drill bit 12, and the cutting material to be shredded can be pushed to the mating surface and / or narrow portion by at least one chip breaker 14.

[0109] The chip breaker 14 can shred the generated chip material, thereby reducing the possibility of long chips getting stuck between the column top drill bit 12, the pin drill bit 20 and the furniture board 3a, and thus reducing the risk of damage to the surface 19e of the furniture board 3a.

Claims

1. A column-top drill bit for creating a hinge drilling pattern in a furniture panel, the column-top drill bit comprising: - At least one rod (40) capable of rotating about the axis of rotation (39) for clamping the top drill bit (12) into the hinged drill jig (10). - At least one cutting head (41) having at least one end-side main cutting edge (13) for creating a cylindrical recess (7) in the furniture board (3a). - At least one chip breaker (14) for crushing the resulting chip material. The feature is that the at least one chip breaker (14) is at least partially tapered so as to push the chip material to be crushed from the axis of rotation (39) in a direction away from the axis of rotation (39).

2. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) is substantially crown-shaped.

3. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) is configured as a separate component from the top drill bit (12), the component being fixedly connected to the top drill bit (12).

4. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) together with the top drill bit (12) are constructed as a single piece.

5. The column top drill bit according to claim 1, wherein, The maximum diameter of the at least one chip breaker (14) is smaller than the minimum diameter of the at least one cutting head (41).

6. The column top drill bit according to claim 1, wherein, The cone angle of the at least one chip breaker (14) is between 50° and 90°.

7. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) has at least one discharge channel (45) for discharging chip material.

8. The column top drill bit according to claim 7, wherein, Multiple discharge channels (45) are provided for discharging shavings.

9. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) has two base surfaces of different sizes spaced apart from each other in the longitudinal direction of the chip breaker (14), wherein the larger base surface of the chip breaker (14) has a greater distance from the cutting head (41) compared to the smaller base surface.

10. The column top drill bit according to claim 1, wherein, The at least one chip breaker (14) is arranged at the rod (40) and / or placed on the cutting head (41) in an adjacent manner to the cutting head (41).

11. The column top drill bit according to claim 1, wherein, The top drill bit (12) has at least one cutting face (46) for crushing cutting material and / or at least one centering tip (42) for centering the top drill bit (12) at the furniture board (3a).

12. The column top drill bit according to claim 3, wherein, The component is bonded, welded, or pressed to the top drill bit (12).

13. The column top drill bit according to claim 6, wherein, The cone angle of the at least one chip breaker (14) is between 70° and 80°.

14. The column top drill bit according to claim 7 or 8, wherein, The discharge channel (45) is concave and / or conical.

15. The column top drill bit according to claim 8, wherein, The discharge channels (45) are evenly distributed on the conical circumferential surface of the at least one chip breaker (14), and / or wherein at least one cutting surface (46) for crushing the chip material is arranged between two adjacent discharge channels (45).

16. The column top drill bit according to claim 11, wherein, The cutting surface (46) is lateral and / or connected in sheet form.

17. A hinge drill jig for creating hinge drilling patterns in furniture panels, characterized in that, The hinge drill bit has at least one column top drill bit (12) according to any one of claims 1 to 16, the column top drill bit being used to create a columnar recess (7) in the furniture board (3a) for receiving a hinge cup (6).

18. The hinge drill jig according to claim 17, wherein, The hinge drill jig (10) has at least one base (11), wherein the at least one base (11) has a mating surface (48) and / or a narrow portion (49), the mating surface and / or the narrow portion being arranged adjacent to the top drill bit (12), and the chip material to be crushed can be pushed to the mating surface and / or the narrow portion by the at least one chip breaker (14).

19. The hinge drill jig according to claim 17, wherein, The distance between the at least one column top drill bit (12) and the zero plane in the zero position is greater than 3 mm, and the untreated surface (19e) of the furniture board (3a) can be arranged in the zero plane.

20. The hinge drill jig according to claim 17, wherein, The hinge drill jig (10) has at least one pin drill bit (20) in addition to the top drill bit (12).

21. The hinge drill jig according to claim 20, wherein, The hinge drill jig (10) has two pin drill bits (20) in addition to the top drill bit (12).

22. The hinge drill jig according to claim 20, wherein, The at least one top drill bit (12) and the at least one pin drill bit (20) are offset from each other in the height direction.

23. The hinge drill jig according to claim 22, wherein, The at least one column top drill bit (12) and the at least one pin drill bit (20) are offset from each other by 3 mm in the height direction.

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