Deburring tool for forward and reverse deburring of hole edges

Abstract

Deburring tool for deburring of holes with a pair of cutting blades (2, 2a) and a rotationally driven tool holder (1), wherein in a tool slot (20) of a tool housing (3) the cutting blades (1, 2) are oppositely driven with radially outwardly directed, conical cutting edges (27, 28) by a rotatable rocker lever (4) arranged in a base body (6) of the tool holder (1) in a radially reversible manner and the rocker lever (4) is rotatably held in the tool holder (1) about an axial longitudinal axis and is loaded in axial direction with a spring preload, wherein for tool change of the cutting blades (2, 2a) the tool housing (3) is axially movably and lockably supported on the rocker lever (4) and the base body (6).

Description

Technical Field

[0001] This invention relates to a deburring tool for deburring holes in both forward and reverse directions.

[0002] The novel embodiment of the tool holder with paired cutting blades for deburring or chamfering the edges of holes, described below, is a further development of the deburring tool as described in DE 2649208 A1 [Reference No. 1] and DE 102008046087 A1 [Reference No. 2]. The description of the deburring tool contained in these two publications forms part of this specification. Background Technology

[0003] DE 26 49 208 C[1] shows a tool holder for deburring the edges of a through hole from both sides using a tool head that can be rotated and driven by a tool holder. The tool head has two generally radially outward-facing cutting blades guided in a receiving groove and pressed outward by a spring force, wherein the spring force is transmitted to the cutting body by a rocker arm rotatably arranged about the longitudinal axis of the tool holder. The spring is designed as a torsion spring, which is fixed on one side to the tool housing and on the other side impacts the rotatable rocker arm in the hole, the rocker arm inserting into the groove-shaped recess of the cutting blade by means of its tapered protrusion.

[0004] Furthermore, the published text shows that the rotational movement of the joystick is limited by an externally operable adjusting screw, the tip of which rests against the contact surface of the joystick. During this process, the tapered protrusion of the joystick disengages from the cutting blade via a screw inserted into a groove in the joystick using an eccentric absatz.

[0005] DE 10 2008 046 087 A1[2] shows a similar deburring tool for deburring holes, which has a pair of cutting blades arranged in a rotary drive, wherein the cutting blades are driven in a radially outward, tapered cutting edge in a rectangular receiving groove (blade groove) by means of a rocker bolt arranged on the positive side of the rotary rocker in a radially relative movable manner via a rotatable rocker arm arranged inside the blade holder.

[0006] The rocker arms are rotatably supported in the tool holder about a longitudinal axis pointing axially and are preloaded with a spring force in the axial direction, wherein each rocker arm bolt is inserted into a groove of the cutting blade. In this configuration, the rocker arms are arranged in a liftable manner within the deburring tool's housing, overcoming the force of the torsion spring, and the spring preload of the torsion spring can be adjusted in a controlled manner in the torsional direction.

[0007] In addition, the following other publicly available texts are also known:

[0008] EP 0291563 B1 describes an embodiment of the cutting blade used in this invention. DE 2 407 269 A1 describes another method for guiding and repositioning the cutting body in a deburring tool of the same class.

[0009] The distinction between the two published documents DE 2649208 A1[1] and DE 102008046087 A1[2] and the present invention

[0010] The basic principle of the deburring tool according to the present invention remains the same: two pairs of opposing cutting blades are arranged in a rotary-driven tool holder, which are controlled by a rocker arm and move out of or into the tool slot of the tool holder during radial movement. The rocker arm is constructed as a cylindrical pin and is rotatably supported about the longitudinal axis of the tool holder, and is rotatably pre-tensioned by a torsion spring. Due to the special shape of the cutting blade, deburring of the hole edge occurs both during the forward movement of the deburring tool entering the hole and during the reverse movement of the deburring tool leaving the hole, wherein opposing hole edges of the same hole are deburred.

[0011] However, the technical teachings of this invention are not limited to deburring the edges of both sides of the through hole. It is also possible to deburr only the edge of one side of the hole, without deburring the edge of the hole on the back side of the through hole. Similarly, it is also possible to design deburring only the edges of the bag holes.

[0012] This invention is based on the two published documents mentioned above [1] and [2].

[0013] According to the object described in DE 10 2008 046 087 A1 [reference number 2], the rocker arm (22[2]) for tool changing is retracted via an eccentric component (25[2]). This has the following disadvantages:

[0014] a) If the eccentric part is not properly reset after the blade is assembled, the rocker arm cannot be inserted into the cutting blade and may be lost during the cutting process.

[0015] b) The rocker arm moves axially backward against the torsion spring (12[2]). Due to friction (mainly caused by contamination from the cutting process), the spring, which is primarily designed for torsion, may no longer be able to reliably return the rocker arm, and the rocker arm may no longer be inserted into the cutting blade. In this case, the cutting blade may also be lost during machining.

[0016] c) Releasing the joystick via the eccentric part (25[2]) and related components on the joystick is complex and costly. Summary of the Invention

[0017] Therefore, this invention, starting from patent DE 10 2008 046 087 A1, has the overall basic task of further developing a deburring tool that is simpler and more reliable in application. The operation of the tool and the setting of deburring parameters should be simpler, more reliable, and more accurate.

[0018] Therefore, according to a first aspect of the invention, the objective of the invention is to achieve a reliable tool changing method in deburring tools.

[0019] The task described herein can be solved by following the teachings of this invention.

[0020] Therefore, in a preferred embodiment, the blade change is accomplished by axially moving the blade housing relative to a rocker arm or relative to the body. This is advantageously achieved by loosening an existing locking screw. In the prior art, the rocker arm is axially movable and held within the base to facilitate blade replacement. However, according to the invention, the blade housing is guided on an axially immovable rocker arm in an axially movable and lockable manner, thereby achieving superior performance during blade change.

[0021] Therefore, the eccentric component and related parts, which are necessary in the prior art, are no longer required. Since the tool housing housing the rocker arm can move axially, tool changing is particularly easy and reliable.

[0022] According to a second aspect of the invention, there are problems in the prior art when adjusting the chamfer size of the deburred hole edge by controlling the rotational movement of a rocker arm.

[0023] DE 2649208 A1[1] shows a rocker arm called an intermediate body (14[1]), which is positioned radially such that its rotational position can be adjusted by an adjusting screw (17[1]) and defines the radial position of the cutting blade (24[1]), thereby defining the chamfer size of the hole edge. This has the following disadvantages:

[0024] a) The adjusting screw may move due to vibration during the cutting process, which may change or damage the chamfering result.

[0025] b) The radial position of the joystick cannot be repeatedly adjusted because there are no markings indicating the joystick position.

[0026] c) Adjusting the radial position of the rocker arm using the adjusting screw and corresponding components on the rocker arm is complex and costly.

[0027] According to this second aspect, the invention also has the objective of adjusting the chamfer size and ensuring machining safety by means of a novel adjustment mechanism design that allows for repeated adjustment and re-locking of the radial position of the tool housing relative to the rocker arm via rotation.

[0028] DE 10 2008 046 087 A1[2] shows that the base (1[2]) of the blade housing (2[2]) is always radially anchored in the same position, and the chamfer size is adjusted by rotating a rocker arm relative to the base.

[0029] Conversely, according to a preferred embodiment of the invention, the rocker arm is designed to remain in the same stop position relative to the base in the radial direction, and the chamfering dimension is achieved by rotating the cutter housing relative to the rocker arm and the base.

[0030] Therefore, a combination of the first and second aspects of the invention is preferably shown, although both aspects of the invention are also subject to the invention.

[0031] The combination of these two aspects is such that the cutter housing is axially movable and lockably supported on the rocker arm and the base and calibration member housing the rocker arm, and is also radially rotatably adjustable and lockably arranged on the rocker arm and the base. The first two aspects of the invention can be achieved through this specific method of adjusting the displacement and rotational position of the cutter housing relative to the rocker arm and the base. However, each aspect of the invention also independently claims patent protection.

[0032] According to a third aspect of the invention, DE 10 2008 046 087 A1[2] shows that the radial preload of the rocker arm can be adjusted by means of elements such as the clamping head (5[2]) and the indexing bolt (6[2]) for the restoring force of the cutting blade using a torsion spring. However, this has the following disadvantages:

[0033] a) The tension acting on the rocker arm and the displacement pressure acting on the cutting blade can only be adjusted in stages (gradients), that is, they cannot be adjusted steplessly.

[0034] b) The prior art does not allow for adjustment of the tool holder in order to clamp a tool holder with a diameter different from that of the base (1[2]) in the machine tool. This is because the clamping head (5[2]) selected according to the prior art cannot achieve either the concentricity (precision) required for using such a tool holder or the required rigidity.

[0035] Therefore, according to the third aspect, the present invention proposes the following task: to achieve, on the one hand, the use of the tool holder, and on the other hand, to achieve stepless, repeatable and reliable pre-tensioning of the rocker arm through a new adaptation scheme.

[0036] To address the proposed task, the present invention proposes a force-locking mechanism that secures the tool holder by means of two diagonally opposite locking screws inserted into an annular groove on one side of the tool holder. By releasing these locking screws, a torsion spring can be pre-tensioned in a stepless manner via radial rotation of the tool holder. The adjusted pretension is reliably achieved by subsequently locking the tool holder. Repeatable positioning is ensured by appropriate markings on the tool holder and the base.

[0037] All three aspects of the present invention, in any combination and / or individually, realize a novel solution for a deburring tool, which will be described below with reference to the accompanying drawings.

[0038] All content and features disclosed in the document, including the abstract, and especially the spatial structures shown in the accompanying drawings, may be considered essential to the present invention, provided that they are new individually or in combination with respect to the prior art.

[0039] The invention will be described in more detail below with the aid of the accompanying drawings, which illustrate only one embodiment. More essential features and advantages of the invention will become apparent from the drawings and their description. Attached Figure Description

[0040] Figure 1 : A cross-sectional view of the tool holder, including an overall overview.

[0041] Figure 2 Cross-sectional view of the tool holder, showing the tool changing principle (rocker in insertion position).

[0042] Figure 3 Cross-sectional view of the tool holder, showing the tool changing principle (blades in a freely replaceable state).

[0043] Figure 4 A cross-sectional view of the tool holder illustrates the principle of calibrating chamfering and deburring dimensions (loosening and locking of the calibrator).

[0044] Figure 5: Side view of the tool holder, illustrating the principle of calibrating chamfer and deburr dimensions (Example position 1).

[0045] Figure 6: Side view of the tool holder, illustrating the principle of calibrating chamfer and deburr dimensions (Example position 2).

[0046] Figure 7 A cross-sectional view of the tool holder illustrates the principle of applying spring preload to the rocker arm.

[0047] Figure 8 Perspective view of the cutting blade

[0048] Figure 9 Cross-sectional view of the tool holder, showing the tool changing principle (insertion of the cutting blade).

[0049] Figure 10 Exploded view of the main components of a deburring tool

[0050] Figure 11 Loose connections between calibration components, clamping components, and the base.

[0051] Figure 12 Perspective view of the clamping component

[0052] Figure 13 View of the calibration component from the connection side

[0053] Figure 14 View of the calibration piece from the inside

[0054] Figure 15 Perspective view of assembled clamping and calibration components.

[0055] Figure 16 Internal view of the calibration piece, with coupled clamping elements. Detailed Implementation

[0056] Basic functions of tool holder 1

[0057] The tool holder 1, driven by rotation in the rotation direction 36, is used to chamfer or deburr the edges of holes on the front and / or back sides. During this process, the tool axis 37 is aligned with the central axis of the hole to be deburred.

[0058] The tool holder 1 works in conjunction with two cutting blades 2 and 2a that operate diagonally opposite each other. Such cutting blades 2 and 2a, and their drive mechanism, are described, for example, in EP 0 291563 B1. This document references that disclosure. Because the cutting blades 2 and 2a are identical in construction, only the cutting blade 2 needs to be described in the following explanation.

[0059] according to Figure 2 and Figure 3 The cutting blades 2, 2a are held in their displaced position by a cylindrical rocker arm 4 preloaded with spring force and rotating in the tool axis 37, via rocker bolts 15, 15a inserted into bolt slots 25 on the upper side of the cutting blades 2, 2a in the axial direction. Figure 8 This position also defines the radial position of the cutting edges 27 and 28 of the cutting blades 2 and 2a, thereby defining the size of the deburring or chamfering.

[0060] according to Figure 4 The rocker arm 4 is held in a base position relative to the base 6 by a preloaded spring force through its radially inclined stop bolt 10, which abuts against the stop bolt 11 of the base 6.

[0061] In the opposite direction, the rocker arm 4 can rotate freely against the preload of the torsion spring 9. According to... Figure 1 The torsion spring is supported at its upper end on the axial retraction part of the tool holder 7, while its lower end is connected to the axial retraction part of the rocker arm 4.

[0062] During the cutting process, when the chamfering or deburring size is reached, the cutting blade 2 can enter and slide through the hole to be deburred due to the processing force, so as to move out of the hole on the opposite side and come to their moved-out position under the loading of spring force.

[0063] Here, the rocker arm 4 is rotated against the spring force of the torsion spring 9 and is further preloaded with stress. This preload then pushes the cutting blade 2 radially outward again for the next processing step of further deburring.

[0064] Therefore, the axial return motion of the rotary-driven tool holder 1 can also be used to deburr or chamfer the edge of the hole on the back side.

[0065] Therefore, the present invention describes a novel deburring tool that has the following features, either alone or in any combination:

[0066] 1. In order to process workpieces with this tool, it is necessary to be able to change the cutting blade from time to time.

[0067] 2. It can calibrate the dimensions of chamfering or deburring, and

[0068] 3. The preload of joystick 4 can be changed.

[0069] These features are described as follows:

[0070] 1. Changing the cutting blade 2 ( Figure 2 , Figure 3 , Figure 8 and Figure 9 )

[0071] A cylindrical rocker arm 4 is rotatably supported in the blade housing 3, and a window-shaped blade groove 20 is arranged at its lower end to support the cutting blades 2 and 2a arranged there.

[0072] according to Figure 1-3 The blade housing 3 has diagonally opposite threaded holes, each containing a locking screw 12, 12a. When clamped, each locking screw 12, 12a rests on the outer periphery of the rocker arm 4 with its bolt-side end.

[0073] By loosening the locking screws 12, 12a used to lock the blade housing 3, the blade housing 3 can be pulled forward relative to the rocker arm 4 in the axial direction of arrow 18. This is from... Figure 2 and Figure 3 The difference is evident in the comparison. The rocker arm 4 thus forms the bearing body for moving the blade housing 3, which is movably supported on the rocker arm 4. Therefore, the cutting blades 2, 2a supported in the blade groove 20 in the base 6 move forward with the axial displacement of the blade housing 3. During this process, the two rocker arm bolts 15, 15a are no longer inserted into the bolt grooves 25 of the cutting blades 2, 2a, and the blades are released and can be removed from the blade groove 20.

[0074] This process can be started from Figure 2 and Figure 3 The comparison shows that the cutter housing 3 is movably and lockably held in the central bearing seat 50 within the calibration piece 5 via an internal, centrally located axially recessed portion. According to... Figure 3 The cutter housing 3 moves axially in the direction of arrow 18 toward the rocker arm 4 held in the cutter holder 1 within the central bearing seat 50. This creates a free space 39 between the inner end face of the cutter housing 3 and the opposite end face of the base 6. Due to this axial spacing, the rocker arm bolts 15, 15a disengage from the bolt groove 25 on one side of the blade. The cutting tools 2, 2a can then be removed from the cutter groove 20 and replaced with new cutting blades.

[0075] To prevent the cutter housing 2 from being completely pulled out of the bearing housing 50 during the operation and from losing the orientation for re-locking by means of the locking screws 12, 12a, a limiting screw 16 is provided in the calibration piece 5, which is inserted into the limiting groove 17 in the cutter housing 3 and restricts the movement of the cutter housing 2 not only in the radial direction but also in the axial direction.

[0076] according to Figure 10-16 The calibration component 5 is a cylindrical sleeve having a lower, axially open bearing seat 50 on one side, into which the reduced-diameter, centrally located axially recessed portion of the blade housing 3 is inserted and movably and lockably accommodated. According to Figure 2 and Figure 3 The calibration piece 5 is connected to the lower end face of the clamping piece 8 via bearing bolts.

[0077] Before inserting new cutting blades 2, 2a, the blade housing 3 is first pushed back in the direction of arrow 19 and locked again with the shape of the calibration piece 5 by locking screws 12, 12a. Afterward, new cutting blades 2, 2a can be independently and one after another inserted into the grooves 20 in the blade housing 6 in the direction of arrow 30. Therefore, the guide bevel 26 of the cutting blades 2, 2a, designed for this purpose, is in the axial direction of arrow 31 (see arrow 31). Figure 9 The rocker arm bolts 15, 15a of the rocker arm 4, which are now also preloaded with spring force in the axial direction, snap back into the bolt slot 25 (see...). Figure 8), and also fixes the cutting blades 2 and 2a radially.

[0078] 2. Chamfer diameter adjustment mechanism ( Figure 4 (Figures 5 and 6)

[0079] When the tool holder 1 is in the base position, before the planned chamfering or deburring is performed, the rocker arm 4 is in a fixed position relative to the base 6 under preloaded spring force. The rocker arm 4's stop bolt 10 and the base 6's stop bolt 11, among other components, hold the rocker arm 4, which is preloaded with spring force, in this fixed position in one direction, by means that the torsional force of the torsion spring 9 presses the stop bolt 10 on the rocker arm side against the stop bolt 11 on the base side.

[0080] To adjust or calibrate the dimensions of the chamfer or deburring, the tool holder 3 needs to be rotated circumferentially relative to the rocker arm 4 and thus relative to the base 6. To perform this calibration process steplessly and with sufficient precision, the required components are the calibration element 5, the clamping element 8, and the locking screws 13, 13a. These components, both loosely and in the locked state, connect the tool holder 3 to the base 6 with sufficient precision to ensure the concentricity of the tool holder 3 and provide sufficient force to lock it in place to transmit the cutting force to the tool holder 7.

[0081] During tool assembly, a connection is formed between the calibrator 5 and the clamping element 8, which remains constant throughout the tool's service life. This is advantageously achieved through measures described below.

[0082] The recess 48 on the top side of the calibration piece 5 is designed such that, during tool assembly, the cam 47 on the clamping piece 8 can pass through this recess 5 and be guided into the calibration piece 5 at a specific rotational position, and then inserted into the interior of the calibration piece 5 by subsequent rotation. The recess 48 approximately matches the shape of the cam 47 and is used only to guide the cam 47 into the calibration piece 5. This recess 48 does not serve any further function during operation.

[0083] The elongated shape of the cam 47 corresponds to the elongated shape of the recess 48 in the calibration piece 5. The purpose of this assembly process is to allow the cam 47 to encounter a mating surface, i.e., contact surface 43, inside the calibration piece 5 through approximately 90° rotation, thus enabling the calibration piece 5 to be tightened onto the base 6. Accordingly, a rotary insertion connection exists between the clamping member 8 connected to the cam 47 and the calibration piece 5, which is releasably connected to it for assembly purposes.

[0084] In another preferred embodiment, this releasable connection can also be configured in the form of a kinematic principle opposite to that of the rotary insert connection described above. In this embodiment, the cam 47 is molded onto the calibrator 5 along its axial extension and inserted into a shape-fitting recess 48 in the clamping member 8 of the rotary insert clutch of the aforementioned type.

[0085] In addition to the reverse kinematics of this releasable insert-type rotary clutch connection, there are other preferred embodiments for connecting the three components 5, 6, and 8. For example, a magnetic clutch can be provided for the releasable clutch of these components. Similarly, multiple cams distributed circumferentially can be arranged on the end face of one component, and these cams are inserted into circumferentially distributed recesses of the same form on the opposite component.

[0086] The calibrator 5 and clamping member 8, along with their cam 47, are not fixedly connected to the rocker arm 4. The rocker arm 4 passes freely through these members 5 and 8 and can move freely relative to these members 5 and 8 not only axially but also radially.

[0087] Therefore, according to Figure 11 The calibration piece 5 is releasably connected to the base 6 via the clamping piece 8. According to... Figure 12 On the clamping member 8, a cam 47, which is elliptical or rectangular in shape, is molded and connected along the axial extension line. Figure 13 The diagram shows a view of the calibration element 5 as seen from the side connected to the substrate 5. Figure 14 An internal view of the calibration piece 5 with contact surface 43 is shown.

[0088] Figure 15 A view of the calibrator 5 and clamping member 8 is shown, their orientation at this point allowing the cam 47 of the clamping member 8 to be guided into the calibrator 5 during tool assembly. Furthermore, Figure 16 An internal view of the calibrator 5 is also shown, in which the cam 47 of the clamping member 8 is positioned laterally, its task being to loosely and rotatably tighten the calibrator 5 onto the base 6 in the loosened state.

[0089] In this design, the calibrator 5 is rotatably attached to the base 6 in the loose state by means of the cam 47 for adjusting or calibrating the chamfer size, and in the locked state, the cam 47 axially tightens the calibrator 5 to the base 6, thereby using the frictional force formed at the connection to also radially (in the rotational direction) lock the calibrator 5 to the base 6.

[0090] The clamping element 8 enables stepless adjustment of the chamfer dimension while ensuring that the adjustments made when locking the calibration element 5 remain unchanged. Therefore, as... Figure 10 The cylindrical pin-shaped rocker arm 4 shown passes through the central hole 49 of the clamping member 8.

[0091] The cylindrical calibration piece 5 uses its central recess 48 to accommodate the clamping piece 8.

[0092] By loosening the locking screws 13 and 13a, the force lock between the base 6 and the calibration piece 5 is released, and according to Figure 7 The cutting blades 2 and 2a can be moved and calibrated radially by rotating the blade housing 3, for example, in direction 21 relative to the rocker arm 4 via an eccentric gearbox formed by the rocker arm bolts 15 and 15a and the bolt grooves 25 on the blade side. The markings 22 on the base 6 and the calibrator 5, shown in the upper part of Figures 5 and 6, facilitate calibration of the rotational position of the blade housing 3 in a scalable and repeatable manner. The maximum adjustment range is defined here by inserting the limiting pin 23 in the calibrator 5 into the limiting groove 24 in the base 6, thereby preventing the cutting blades 2 and 2a from moving radially within a geometrically defined area.

[0093] When the locking screws 13 and 13a on the base side are tightened, the locking bolts insert their bolt ends into the radially outward conical surface 45 of the clamping member 8. The clamping member 8 then restores the force lock between the calibration member 5 and the base 6, and the two parts 5 and 6 are locked together without moving the adjusted calibration position.

[0094] 3. Adjustment of the spring preload of torsion spring 9 ( Figure 7 )

[0095] This new tool design utilizes a tool holder 7 to adapt the tool post 1 to the machine tool. The tool holder 7 here corresponds to a motor-driven chuck in the machine tool, not shown in the accompanying drawings.

[0096] To accommodate the adjustment of the radial spring prestress of the rocker arm 4 required for handling different materials, i.e., the prestress torque acting on the cutting blades 2, 2a, it is advantageously integrated into the connection between the base 6 and the tool holder 7. The cutting force is transmitted through the connection between the base 6 and the tool holder 7, which transmits the rotational load, via locking screws 14, 14a in the base 6. Here, the locking screws 14, 14a in the base 6 are inserted into the annular groove 38 in the tool holder 7. According to... Figure 7 The torsion spring 9 is connected to the axial protrusion on the bottom side of the tool bar 7 through its upper end, and the other end is connected to the axial protrusion of the rocker arm 4.

[0097] When the two locking screws 14, 14a are loosened, the tool holder 7 can rotate relative to the base 6, for example, in the direction of arrow 35, and in this case, the torsion spring 9 is compressed and relaxed in the opposite direction. By subsequently tightening the locking screws 14, 14a, the force transmission connection between the tool holder 7 and the base 6 is restored. The diagonally opposite locking screws 14, 14a also enable the necessary connection precision to ensure the concentricity of the entire tool holder 1. The markings 34 on the base 6 and the tool holder 7 allow for indexable and repeatable adjustment of the pretension of the torsion spring 9. The maximum required adjustment range is defined circumferentially by elements such as the limiting pin 32 in the tool holder 7 and the limiting groove 33 in the base 6.

[0098] from Figure 10 The exploded view shows more details of the deburring tool according to the present invention.

[0099] In the locked state, the components—tool housing 3, calibration element 5, and base 6—are securely connected to each other via locking screws 12 and 12a in the tool housing 3. The connection between the calibration element 5 and the base 6 is adjustable and lockable in the axial direction (arrow direction 46) via clamping element 8. Here, clamping element 8 can be loosely connected to the base 6 via locking screws 13 and 13a. Here, the pin-side tapered surface 44 of the locking screws 13 and 13a is inserted into a similarly similar hole-side tapered surface 45 in clamping element 8.

[0100] The clamping member 8 is inserted into the interior of the calibration member 5 by means of its cam 47 arranged on the lower side, that is, into the shaped recess 48 provided there, such that the cam contact surface 42 on the clamping member side abuts against the inner contact surface 43 of the calibration member 5.

[0101] By locking the two base-side locking screws 13, 13a into the radially outward-facing, conical surface 45 of the clamping member 8 (designed as a hole), the clamping member 8 is moved axially into the base 6 in the direction of arrow 46, and the calibrator 5 is axially tightened onto the base 6. Here, the upper, end-side contact surface 40 of the calibrator 5 contacts the opposing contact surface 41 of the base 6, establishing the necessary radially acting force lock. Thus, the calibrator 5 is locked to the base 6 axially by form fit and radially by force lock. The rocker arm 4 is supported in this process in a rotatable and axially movable manner relative to the components such as the tool housing 3, the calibrator 5, and the clamping member 8. By slightly loosening the locking screws 13, 13a, the radially acting force lock between the base 6 and the calibrator 5 is released, and the calibrator 5 can be adjusted rotatably relative to the base 6 together with the tool housing 3 locked thereon. This allows for adjustment or calibration of the chamfering or deburring dimensions. Accordingly, the connection between the calibration component 5 and the base 6 is established by the clamping component 8, so that when the two components are locked, no force interfering with rotation is generated, which would again hinder accurate calibration during the locking process. The clamping component 8 here only serves as a connector to ensure that movement is limited to the axial direction.

[0102] The axial movement along the arrow direction 46 is triggered by the insertion of the external conical surface 44 of the locking screws 13, 13a into the internal conical surface 45 of the clamping member 8, in order to lock the components of the calibration member 5 by means of the clamping member 8 and the base 6.

[0103] List of reference numerals

[0104] 1 knife holder

[0105] 2 cutting blades

[0106] 2a cutting blade

[0107] 3-blade casing

[0108] 4 joysticks

[0109] 5 calibration pieces

[0110] 6 matrix

[0111] 7-tool holder

[0112] 8 clamping parts

[0113] 9 Torsion Springs

[0114] 10 Stop Bolts (Rocker)

[0115] 11 Stop bolts (base)

[0116] 12 locking screws (screwdriver housing)

[0117] 12a locking screw (blade case)

[0118] 13 Locking Screws (Calibration Part)

[0119] 13a locking screw (calibration part)

[0120] 14 Locking screws (tool holder)

[0121] 14a locking screw (tool holder)

[0122] 15 rocker bolts

[0123] 15a rocker bolt

[0124] 16-inch screw

[0125] 17-slot limited slot (blade case)

[0126] 18 Arrow Direction

[0127] 19 Arrow direction

[0128] 20-groove

[0129] 21. Arrow direction (calibration component)

[0130] 22 mark (bevel dimension)

[0131] 23 Limiting pin (calibration part)

[0132] 24-slot limiter (base)

[0133] 25 Bolt Slot (Blade)

[0134] 26 Importing the Inclined Surface

[0135] 27 Cutting edge (facing forward)

[0136] 28 cutting edge (facing backward)

[0137] 29 chip grooves

[0138] 30 Arrow direction (blade)

[0139] 31. Arrow direction (joystick)

[0140] 32 Limiting pin (tool holder)

[0141] 33-slot limiter (base)

[0142] 34 (Spring preload)

[0143] 35 Arrow direction (tool holder)

[0144] 36 rotation directions

[0145] 37 Tool Shaft

[0146] 38 Annular Groove (Tool Holder)

[0147] 39 Free Space

[0148] Contact surface after 40 (calibration part)

[0149] 41 Contact surface (base)

[0150] 42 Cam contact area (clamping element)

[0151] 43 Built-in contact surface (calibration component)

[0152] 44 External conical surface (from 13, 13a)

[0153] 45. Internal conical surface (clamping element)

[0154] 46 Arrow direction

[0155] 47 Cam (Clamping Part)

[0156] 48 concave portion

[0157] 49 center holes (in 8)

[0158] 50 bearing housing (in 5, used for 3)

Claims

1. A deburring tool for deburring holes using paired cutting blades (2, 2a) and a rotary-driven tool holder (1), wherein, In the groove (20) of the cutter housing (3), the cutting blades (2, 2a) are driven in the radial direction by means of radially outward, tapered cutting edges (27, 28) via a rotatable rocker arm (4) arranged in the base (6) of the cutter holder (1), and the rocker arm (4) is rotatably held in the cutter holder (1) about the longitudinal axis of the axial direction and is loaded with spring prestress in the axial direction by a torsion spring (9). The characteristic is that, in order to adjust the chamfer size of the hole edge, the rocker arm (4) is held in the same stop position in the radial direction relative to the base (6), and the cutter housing (3) accommodates and holds the rocker arm (4) in the axial and radial directions, and can be continuously rotated and locked in the radial rotational position of the cutter housing (3) relative to the rocker arm (4) and relative to the base (6).

2. The deburring tool according to claim 1, characterized in that, The stop bolt (10) of the rocker arm (4) and the stop bolt (11) in the base (6) keep the rocker arm (4) with the preloaded spring force in a fixed stop position in the blade housing (3) in a rotational direction.

3. The deburring tool according to claim 2, characterized in that, The torsional force of the torsion spring (9) presses the stop bolt (10) on the rocker side against the stop bolt (11) on the base side, so that the rocker (4) is in a one-sided stop position.

4. The deburring tool according to claim 1, characterized in that, The cylindrical calibration piece (5) connected to the substrate (6) is releasably engaged with the cylindrical clamping piece (8) at its end.

5. The deburring tool according to claim 4, characterized in that, In the base (6), radially inward locking screws (13, 13a) are arranged, which adjustably connect the calibration piece (5) to the base (6) not only in a releasable but also in a locked state via the clamping piece (8), thereby transmitting cutting force to the tool holder (7).

6. The deburring tool according to claim 5, characterized in that, The chamfer size of the hole edge is continuously calibrated by rotating the calibrator (5) relative to the substrate (6), and the adjustment of the chamfer size is fixed when the calibrator (5) is locked by means of the built-in clamp (8).

7. The deburring tool according to claim 6, characterized in that, By loosening the locking screws (13, 13a) on the base side, the force lock between the base (6) and the calibration piece (5) is unlocked; and by rotating the blade housing (3) relative to the rocker arm (4), the cutting blade (2, 2a) is made radially movable and calibrable by means of an eccentric gearbox consisting of a rocker arm bolt (15, 15a) and a bolt groove (25) on the blade side.

8. The deburring tool according to claim 7, characterized in that, In order to calibrate the rotational position of the blade housing (3) in a graduated and repeatable manner, there is a mark (22) on the base (6) that is opposite to the mark on the calibration piece (5).

9. The deburring tool according to claim 8, characterized in that, In order to limit the maximum adjustment range of the cutting blades (2, 2a), the limiting pin (23) in the calibration piece (5) is inserted into the limiting groove (24) in the base (6).

10. The deburring tool according to claim 7, characterized in that, When the locking screws (13, 13a) on the base side are tightened against the clamping member (8), the force lock between the calibration member (5) and the base (6) can be restored again.

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