Deburring tool for radial bores and suitable cutting body

The deburring tool addresses precision and complexity issues by using a rigidly connected holding section and adjustable stops to maintain precise cutting radii, enhancing accuracy and reproducibility in radial bore deburring.

DE102017111736B4Active Publication Date: 2025-06-18MATTES ADALBERT
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Patent Information

Application Number
DE102017111736
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2017-05-30
Publication Date
2025-06-18
Estimated Expiration
2037-05-30

AI Technical Summary

Technical Problem

Existing deburring tools for radial bores suffer from variations in swiveling dimensions due to elastic retraction, leading to reduced precision and increased complexity in design and manufacture.

Method used

A deburring tool with a rigidly connected holding section and a single-piece receiving body, allowing for defined and reproducible cutting radii through adjustable stops and a shaft offset, ensuring precise adherence to specified swiveling dimensions.

Benefits of technology

Ensures high accuracy and reproducibility in the deburring process by preventing movement of the cutting body relative to the holder body, allowing for easy adjustment of cutting radii without complex disassembly.

✦ Generated by Eureka AI based on patent content.

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Abstract

Deburring tool (1) for radial bores (8), comprising - a cutting body (3) with at least one cutting edge (31, 32), - a shank (2) having the cutting body (3), and - a receiving body (4) with a holding section (21) for receiving a connecting section (20a) of the shaft (2) which is spaced apart from the cutting body (3) in such a way that a rotational movement of the receiving body (4) about a longitudinal axis (X) of the receiving body (4) is transmitted via the shaft (2) to the cutting body (3) for rotating the cutting body (3) about the longitudinal axis (X), wherein the shaft (2) is arranged in a deburring position by an offset (R) from the longitudinal axis (X) of the receiving body (4) in order to define a cutting radius corresponding to the offset, characterized in that the receiving body (4) is rigidly connected to the holding section (21) and is formed in one piece.
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Description

The invention relates to a deburring tool for radial bores having the features of claim 1 and of claim 3 which are subordinate thereto, and to a cutting body according to claim 16 which fits the same.DE 103 57 404 B4 discloses a deburring tool for radial bores, having a cutting body with at least one cutting edge and having a shank which has the cutting body. In addition, the deburring tool has a receiving body for receiving a portion of the shank spaced apart from the cutting body in such a way that a rotational movement of the receiving body about a longitudinal axis of the receiving body is transmitted via the shank to the cutting body for rotation of the cutting body about the longitudinal axis. The shank is elastically loaded with the cutting body in the receiving body for displacing the shank by an offset away from the longitudinal axis into a deburring position. In addition, the deburring tool also has an adjustable stop for limiting the offset, wherein the stop defines a minimum distance of the circumference of the shank relative to a wall of the receiving body and a cutting radius which is adjustable accordingly.Further deburring tools with elastically mounted or prestressed cutting bodies are known, for example, from U.S. Pat. No. 3,166,958, DE 197 11 206 A1, U.S. Pat. No. 4,086,018, DE 25 25 872 B2, DE 199 38 512 A1 and EP 0 687 209 B1.All these deburring tools have an elastically movable or prestressed mounting of the cutting body. Accordingly, a variation of the pivot-out dimension during the workpiece processing by elastic yielding cannot be ruled out. In addition, the construction and production of these tools is associated with increased outlay on account of the said prestress.Still further deburring tools are disclosed in DE 10 2913 111 941 A1 and DE 699 02 374 T2. DE 20 2011 100 749 U1 discloses a deburring tool having the features of the preamble of claim 1.An object of the invention is to improve a deburring tool. In particular, the deburring tool should enable the most exact possible compliance with a predetermined outward swing dimension. In addition, a suitable cutting tool is to be specified for this purpose.This object is achieved by a deburring tool for radial bores having the features of patent claim 1 and by a deburring tool for radial bores according to a further embodiment having the features of patent claim 3. A suitable cutting tool for this is the subject matter of claim 16.Accordingly, according to a first embodiment, a deburring tool for radial bores is provided, comprisinga cutting body having at least one cutting edge,a shank having the cutting body, anda receiving body having a holding section for receiving a connecting section of the shank spaced apart from the cutting body in such a way that a rotational movement of the receiving body about a longitudinal axis of the receiving body is transmitted via the shank to the cutting body for rotation of the cutting body about the longitudinal axis. The shank is arranged in a deburring position offset away from the longitudinal axis of the receiving body in order to define a cutting radius corresponding to the offset. In this case, the receiving body is rigidly connected to the holding section and is formed in one piece.This means that the holding section of the receiving body receiving the shank is formed fixedly on the latter and the deburring tool is therefore designed for a defined, invariable bore diameter of the radial bore. In this way, it is ensured that a movement of the cutting body relative to the receiving body is avoided and thus a particularly high accuracy and reproducibility in carrying out the deburring process can be ensured.In order to provide a design for a specific bore diameter, the offset can be provided, for example, by means of an angular offset in which a longitudinal axis of the shank is oriented tilted at an angle 0°<α<90° with respect to the longitudinal axis of the receiving body, and / or the offset can be provided by means of a lateral offset in which the longitudinal axis of the shank is arranged laterally spaced apart with respect to the central longitudinal axis.In a second, alternative embodiment, the deburring tool for radial bores likewise comprises a cutting body having at least one cutting edge and a shank which has the cutting body. In addition, the deburring tool has a receiving body with a holding section for receiving a connecting section of the shank spaced apart from the cutting body in such a way that a rotational movement of the receiving body about a longitudinal axis of the receiving body is transmitted via the shank to the cutting body for rotation of the cutting body about the longitudinal axis.In addition, the holding section is configured to be movable with respect to the longitudinal axis in order to provide a displacement of the shank with the cutting body by an offset away from the longitudinal axis into a deburring position. In addition, the deburring tool comprises an adjustable first stop for limiting the offset in a first direction of movement, wherein a first distance of the circumference of the holding section relative to a first wall section of a wall of the receiving body can be fixed by means of the first stop.Furthermore, the deburring tool comprises an adjustable second stop for limiting the offset in a second movement direction directed opposite the first movement direction, wherein a second distance of the circumference of the holding section relative to a second wall section of the wall of the receiving body can be fixed by means of the second stop in order to set the offset of the shank in the deburring position and to fix a cutting radius corresponding to the offset.Further advantageous embodiments are the subject matter of the further dependent claims.A deburring tool is advantageous in which the holding section is mounted pivotably in the receiving body via a bearing, so that the cutting edge can be pivoted in the direction of the longitudinal axis of the receiving body or away from the latter for setting different cutting radii.Advantageously, the holding section has a first and a second threaded bore and the first and second stop each have an external thread, wherein the first stop is screwed into the first threaded bore protruding at least partially in the direction of the first wall section of the wall.Additionally or alternatively, the second stop can be screwed into the threaded bore protruding at least partially in the direction of the second wall section of the wall.Preferably, the first and the second threaded bore are arranged parallel to one another and / or point in mutually opposite directions. This allows the two stops to be arranged in mutually opposite directions, so that support of the cutting body can be provided accordingly on mutually opposite wall sections. Consequently, the first and second wall sections acted upon by the two stops are likewise arranged opposite one another. In this way, the holding section and thus also the shaft for adjusting the offset is easily adjusted and in particular fixed reproducibly. Movement in the first movement direction or in the second movement direction is effectively prevented in this way in a fixed state.The wall is advantageously an inner wall of a circumferential wall of the receiving body. The wall is advantageously formed by an in particular cylindrical sleeve which is arranged around a bearing section, wherein said bearing section is formed on the receiving body for supporting the holding section which is movable relative thereto. The bearing section is in particular formed as a holding section receiving recess.Advantageously, a through-opening is formed in the wall for inserting and / or adjusting the first stop or the second stop.This enables the radius of the edge of the radial bore to be deburred to be adjusted appropriately in each case in accordance with a radial bore to be deburred without complicated dismantling work.For all the described embodiments, it is particularly advantageous, for example, to form the shank in which the shank, which comprises at least the connecting portion, a front shank portion and the cutting body, is formed in one piece and is held in the holding portion. In order to replace the cutting body, in this case only the shank has to be removed from the holding section and replaced by a new shank.Furthermore, the shank can be mounted with its connecting portion in the recess formed in the holding portion of the receiving body, wherein a base of the recess forms a defined stop surface for the connecting portion of the shank and is of planar design.In this way, an end face of the connecting section, which end face is likewise of planar design, can be brought into planar contact with the floor. This enables exact and reproducible positioning of the entire shank in the holding section of the receiving body.In addition, for this purpose, a transition between the base and a lateral wall of the recess can have a first chamfer, wherein the first chamfer is formed smaller than a corresponding second chamfer formed on the connecting portion.For all the described embodiments, an arrangement is particularly advantageous, for example, in which the connecting section is arranged laterally offset from a central longitudinal axis of the holding section by a distance in the holding section of the receiving body. The lateral displacement offers the advantage of also being able to set larger radii than in the case of a centrally arranged shaft. In addition, the lateral displacement of the shank toward the edge of the holding section offers the advantage that, with a set or provided small radius, the tilting angle of the shank longitudinal axis about a shank bearing point relative to the central longitudinal axis is kept small and a particularly clean deburring is made possible.If the holding section is provided movably in the receiving body, then, according to a corresponding embodiment of the deburring tool, the shank can be pivoted from a basic position along the longitudinal axis of the deburring tool into a deburring position. For this purpose, the shaft is arranged laterally offset. A longitudinal axis through the shaft can in this case be offset laterally and parallel to the longitudinal axis of the receiving body. Such an offset arrangement of the shank relative to the holding section or the receiving body enables a comparatively increased cutting radius at predetermined minimum distances and the circumference of the holding section relative to the wall of the receiving body. In addition, an offset arrangement of this type brings about a relatively smaller tilting angle of the cutting body relative to the longitudinal axis of the deburring tool, which forms the rotational axis.Expediently, the shank consists of such an inelastic material that the shank is not bent in itself during deburring of an edge. This makes it possible to allow the shaft to protrude from the receiving body or the holding section even without a shaft guide, so that a shaft guide, in particular a shaft guide beyond the front end of the shaft, is not required.Advantageously, the holding section of the receiving body has a substantially rectangular cross section, at least two opposing planar walls, and the receiving body has a holding section receiving recess with two correspondingly planar walls, on which the holding section supported therebetween is supported laterally with its planar walls. Such an arrangement enables a pivoting movement in a lateral direction, wherein a mutual supporting effect is provided in the direction perpendicular thereto by the flat walls lying against one another. During a rotational movement of the deburring tool, lateral forces acting on the cutting edge and the cutting body are thus absorbed by the planar walls via the shank, the holding section and the receiving body.Two exemplary embodiments are explained in more detail below with reference to the drawings. The following are shown: FIG. 1 shows a lateral sectional view along a longitudinal axis of the deburring tool according to a first embodiment; FIG. 2 shows a lateral sectional view along the longitudinal axis and perpendicular to the sectional view according to FIG. 1 ; and FIG. 3 shows a detailed view of FIG. 1, FIG. 4 shows a lateral sectional view along a longitudinal axis of the deburring tool according to a second embodiment, and FIG. 5 shows a deburring process for using a deburring tool according to the description.As can be seen from FIGS. 1 and 2, the deburring tool 1 substantially comprises a shank 2 with a cutting body 3 and a receiving body 4 for the shank 2.In the embodiment shown, the shaft 2 comprises a front shaft section 20 and a connecting section 20 a, wherein the connecting section 20 ais arranged in a rotationally fixed and replaceable manner in a holding section 21 of the receiving body 4, and wherein the shaft 2 extends out of the holding section 21 in the longitudinal direction along its longitudinal axis X'.The shank 2 carries on its front shank portion 20 the cutting body 3, which in a manner known per se has a first cutting edge 31, a second cutting edge 32 and a sliding edge 33 separating the latter. The first blade 31 is formed obliquely and laterally in the rear direction of the front shaft portion 20 from a front end of the front shaft portion 20, and serves to deburr an outer edge of a radial bore. The second cutting edge 32 extends obliquely downward or rearward from a lateral outside point in the direction of the front shank portion 20 and, after passing the cutting body 3 through a radial bore, serves for deburring a rear edge of the radial bore.For rotationally fixed but detachable fastening of the shank 2 in the holding section 21, the holding section 21 has a recess 34 designed in the form of a receiving bore 34. The rear end, i.e., the connecting portion 20 aof the shank 2, is inserted into the receiving bore 34. In particular in the case of a receiving bore 34 with a circular cross section, a locking mechanism consisting of a threaded bore 35 is used for firmly fastening the shank 2, said threaded bore leading from one side of the holding section 21 to the receiving bore 34 for the shank 2. Inserted in the threaded bore 35 is a fixing screw 36, the end face of which clamps a rear end section of the connecting section 20a, which preferably has a flattened portion 20c for this purpose, of the shank 2 in the receiving bore 34 for the latter.Alternatively, other arrangements for inserting and fastening the shank 2 in the holding section 21 are also possible. If no forces act on the shank 2 in the longitudinal direction, a receiving bore with an angular, for example quadrangular, cross section reaches, for example, wherein the rear end of the shank 2, that is to say the connecting portion 20 a, has a correspondingly angular outer circumference, with the result that insertion in a rotationally fixed manner is made possible even without the use of a fixing screw 36. The recess 34 described as receiving bore 34 for the shank 2 is therefore not to be understood as a circular bore.The receiving body 4 has a bearing section, which is designed as a holding section receiving recess 41 on the front side and in which at least one rear end of the holding section 21 is received. The holding section receiving recess 41 preferably leads in the form of a wide longitudinal slot from the end face of the receiving body 4 into the latter. The holding section receiving recess 41 thus has two planar walls 42 lying opposite one another. A bearing bore 43 passes through the holding section receiving recess 41 for the holding section 21, wherein the bearing bore 43 runs perpendicularly through the walls 42 of the holding section receiving recess 41. The holding section 21 has a cross section in the rear section or over the entire longitudinal extent, which permits insertion into the holding section receiving recess 41.The holding section 21 is preferably formed with a rectangular cross section, in particular with two mutually opposite, flat walls 22. The width, i.e. the distance between the two flat walls 22 of the holding section 21, is preferably only slightly less than the free distance between the two opposite walls 42 of the holding section receiving recess 41. dirt and chips are thereby prevented from entering between the walls 22 of the holding section 21 and the walls 42 of the holding section receiving recess 41. The holding section 21 also has a bearing bore 23 which extends perpendicularly to its flat wall 22 through the holding section 21.In the assembled state of the deburring tool 1, a bearing bolt 44 passes through the bearing bore 43 of the holding section receiving recess 41 and through the bearing bore 23 of the holding section 21, so that the holding section 21 and thus also the shank 2 can be pivoted in the lateral direction around the bearing bore 23, 43. The bearing bore 23, 43 is preferably formed in the region of the rear-side section of the holding section 21 or of the holding section receiving recess 41.In addition, the bearing 23, 43, 44 formed in this way preferably leads centrally through the deburring tool 1, i.e. transversely to its longitudinal axis X, so that the shank 2 with the cutting body 3 can be pivoted laterally out of a rest or basic position along the longitudinal axis X in the first direction of movement x 1 or in the direction of movement x 2 directed opposite thereto into an operating position or deburring position. The longitudinal axis X of the deburring tool 1 forms the axis of rotation about which the end section, which is formed with its rear side and as a receiving body shaft 45, rotates when the receiving body shaft 45 is inserted into a corresponding drive.In order to limit the pivoting movement of the holding section 21 and of the shank 2 around the bearing 23, 43, 44 in the lateral direction and to securely accommodate the holding section 21 in the accommodating body 4, the accommodating body 4 has an outer wall. According to a preferred embodiment, the outer wall is formed by a sleeve 5. An inner wall 51 of the sleeve 5 abuts the outer periphery of the front receiving body 4. The wall profile of the sleeve 5 is correspondingly adapted to the outer wall profile of the receiving body 4 in such a way that the sleeve 5 can be slid over the front-side section of the receiving body 4 after the shank 2 has been inserted into the retaining section receiving recess 41.For fixing the sleeve 5 to the receiving body 4, a threaded bore 46 is used, for example, which leads from the outside into the wall of the receiving body 4. A corresponding bore 52 leads through the wall of the sleeve 5, wherein a locking screw 53 can be screwed into the threaded bore 46 through the bore 52 in the sleeve 5 for fixing purposes. Such an arrangement enables, besides the easy insertion of the holding portion 21 into the holding portion receiving recess 41, easy disassembly and replacement of the holding portion together with the shaft 2 after removal of the sleeve 5 as needed.In order to set the offset R or the cutting radius R defined thereby, a first stop 70 and a second stop 71 are formed on the holding section 21. The two stops 70, 71 are each designed to limit the tilting or pivoting angle of the holding section 21 and thus also of the shank 2 in the first direction of movement x 1 or the second direction of movement x 2 opposite the first direction of movement x 1 about the bearing 23, 43, 44 from the basic position into the deburring position. By each of the two stops 70, 71, a distance (first distance d 1 or second distance d 2) of the corresponding circumferential position of the holding section 21 relative to a respectively acted upon first or second wall section 51 a, 51 bof the inner wall 51 of the sleeve 5, i.e. relative to the receiving body 4, is respectively adjusted. This respective distance d 1, d 2 corresponds to an offset or cutting radius R of the cutting body 3 with the cutting edges 31, 32 from the basic position laterally away from the longitudinal axis X.This desired offset or cutting radius R can be easily adjusted and securely fixed in this way. According to the embodiment shown, the two stops 70, 71 are arranged parallel thereto and offset relative to one another, wherein the two stops 70, 71 point in mutually opposite directions. According to the embodiment shown, the first stop 70 projects away from the holding section 21 in the same direction as the cutting body 3 when arranged between the bearing 23, 43, 44 and the shank 2. Consequently, the second stop 71 protrudes away from the holding section 21 in the opposite direction thereto, i.e. opposite to the direction of the first stop 70 or the cutting body 3.Both stops 70, 71 are preferably each formed by a screw bolt, the external thread of which engages in a threaded bore in each case, the respective threaded bore as a stop bore 25 a, 25 bpreferably passing transversely through the holding section 21. The two stop bores 25 a, 25 bin this case extend transversely to the bearing bore 23 and in the basic position transversely to the longitudinal axis X of the deburring tool 1. In order to enable the two stops 70, 71 to be inserted, exchanged and / or adjusted, the sleeve 5 has in each case a bore 55 a, 55 b, namely on the side facing away from the wall section 51 a, 51 bapplied to the respective stop 70, 71. This means in the embodiment shown that a first bore 55a for the first stop 70 is provided on the side opposite the cutting body 3. The second bore 55b provided for the second stopper 71 is disposed on the same side as the cutter body 3, respectively.FIG. 3 shows a detail view A of the receiving of the shank 2 in the holding section 21 As described, the shank 2 can be formed integrally from the front shank section 20 with the cutting body 3 and the connecting section 20 a, wherein the shank 2 is inserted in the holding section 21 in a replaceable manner. It is thus possible to replace the front shaft portion 20 together with the cutter body 3 as needed by replacing the entire shaft 2. For this purpose, the shank 2 is mounted in the recess 34 formed as a receiving bore in the receiving section 21.In order to achieve the most constant and reproducible positioning possible of the cutting body 3, a bottom 34 aof the recess 34 is designed and embodied as a defined stop surface for a shank end of the shank 2 facing away from it, which end is formed by the connecting portion 20 a. During a change, the connecting section 20 acan be inserted as far as the bottom 34 aand is thus positioned exactly. This offers the advantage that a conventionally required re-measurement of the deburring tool 1 after a change of the shank 2 can be omitted. A prerequisite for this is, of course, a constant and uniform length of the shank 2, so that a constant overall length of the deburring tool 1 is always ensured with the aid of the provided stop surface 34 a.In addition, a transition between the bottom 34 aand a lateral wall 34 bof the recess 34 has a first chamfer 34 c, wherein the first chamfer 34 cis formed smaller than a corresponding second chamfer 20 bformed on the connecting portion 20 a. With the aid of this size adjustment, complete bearing of the end-face shaft end formed by the connecting portion 20 aon the base 34 ais ensured.A second embodiment is illustrated with reference to FIG. 4. Identical reference numerals refer to identical or at least identically functioning elements of the first embodiment. Essentially elements are described which have been described with reference to the first embodiment only to a limited extent or differ from the first embodiment. With regard to all further elements, reference is made to the first embodiment.The deburring tool 1 for radial bores 8 comprises a cutting body 3 having at least one cutting edge 31, 32, a shank 2 which has the cutting body 3, and a receiving body 4 having a holding section 21 for receiving a connecting section 20 aof the shank 2 which is spaced apart from the cutting body 3 in such a way that a rotational movement of the receiving body 4 about a longitudinal axis X of the receiving body 4 is transmitted via the shank 2 to the cutting body 3 for rotating the cutting body 3 about the longitudinal axis X. The shank 2 is arranged away from the longitudinal axis X by an offset R in a deburring position in order to define a cutting radius R corresponding to the offset R. In addition, the receiving body 4 is formed integrally with the holding section 21.The offset R is thus provided by means of a lateral offset in which the longitudinal axis X' of the shank 2 is arranged laterally spaced apart with respect to the central longitudinal axis X. In addition, the longitudinal axis of the shank 2 could be arranged with an angular offset, in which the longitudinal axis X' of the shank 2 is oriented at an angle 0°<α<90° with respect to the longitudinal axis X of the receiving body 4 (not shown).FIG. 5 shows in individual steps a deburring process for the deburring tool 1 according to both embodiments according to FIGS. 1 to 4.First, according to step a.), the deburring tool 1 is brought into the deburring position by the desired offset R of the cutting body 3 from the longitudinal axis X being moved into the deburring position and fixed therein with the aid of the first stop 70 and the second stop 71.The deburring tool 1 is then positioned (step b.)) offset relative to a central axis of a bore 8 to be deburred in such a way that the deburring tool 1 can be immersed in the bore 8. The insertion process can preferably take place without a rotational movement of the deburring tool 1 on account of the offset positioning with respect to the central axis of the bore 8.During the dipping process, the cutting body 3 is positioned below a bore edge 82 to be deburred of the bore 8 to be deburred (step c.)).Subsequently, according to step d., the deburring tool 1 is positioned centrally with respect to the bore 8 to be deburred. This means that the longitudinal axis X of the deburring tool 1, which is simultaneously its rotational axis, is arranged coaxially with respect to the central axis of the bore 8.The deburring tool 1 can now be set in rotation and the cutting body 3 with its cutting edge 31, 32 can be moved with advance to the bore edge 82 to be deburred in order to deburred said bore edge 82 (step e)).Once deburring of the bore edge 82 has been completed, the deburring tool 1 is stopped in an oriented manner, as shown in step f., and is moved out of the bore 8 again in the reverse sequence. For this purpose, the deburring tool 1 is initially laterally offset from the coaxial positioning within the bore 8, so that the front shank portion 20, including the cutting body 3, can be moved out of the bore 8.When the deburring tool 1 has been moved out of the bore 8, the deburring process is ended (step g.)).According to further embodiments, a plurality of alternative configurations can be implemented. For example, the sleeve 5 and the receiving body 4 can be formed in one piece. The shank 2 and the holding section 21 can also be formed in one piece.In the two-part embodiment of the shank 2 with the holding section 21 shown in FIGS. 1 to 3, there are a plurality of possible fastenings of the shank 2 to or in the holding section 21 In addition to the described embodiments, the holding section 21 can also have a threaded bore into which a shank 2 provided with a corresponding external thread is screwed. In this case, the thread profile would have to be designed opposite to the direction of rotation of the deburring tool 1 in order to prevent a turning out during the deburring process. In principle, instead of the illustrated arrangement of a rigid holding section 21 and a bearing 23, 43, 44, a holding section 21 made of an elastic material can also be used, wherein the holding section 21 in this case would be inserted in the receiving body 4 in such a way that the shank 2 with the connecting section 20 ae biased away from the longitudinal axis X.With regard to the materials, a hard material is selected for the shank 2 and preferably the holding section 21, which is relatively inelastic. As a result, elastic bending of the shank 2 between the bearing bolt 44 and the cutting body 3 which is difficult to control during deburring operation is avoided, with the result that an exactly defined cutting radius R can be fixed by adjusting the stops 70, 71. In this case, the bore 55 through the sleeve 5 is advantageously designed as an opening in the form of a longitudinal slot. The further bores 54, 52 in the sleeve, which enable access through the sleeve to the shaft base receiving recess 41, can also be designed as non-circular openings.Reference numerals denote reference numerals1 Deburring tool 2 shaft 20 front shaft section 20 aconnection section 20 bsecond chamfer 20 cflake 21 holding section 22 lateral wall of 21 23 bearing bore in 21, 25 afirst stop bore for 70 25 bsecond stop bore for 71 3 cutting body on 2 31 first cutting edge 32 second cutting edge 33 sliding edge 34 recess for 20 a34 abase 34 blateral wall 34 cfirst chamfer 35 threaded bore 36 locking screw 4 receiving body for 2 41 holding section receiving recess 42 walls of 41 43 bearing bore 44 bearing bolt 45 receiving body shaft 46 threaded bore for 5 5 sleeve 51 inner wall of 5 51 afirst wall section of 51 51 51 bsecond wall section of 51 52 bore in 5 for 53 53 locking screw for 5 on 4 55 a bore in 5 to 25 a, 70 55b bore in 5 to 25b, 71 70 first stop 71 second stop 8 radial bore 81 wall with 8 82 rear edge of 8 x1 first direction of movement x2 second direction of movement X longitudinal axis of 1 X' longitudinal axis of 2 X'' longitudinal axis of 21 R cutting radius R offset between X and X'd1 distance between 2 and 4 / 5 at 70 d2 distance between 2 and 4 / 5 at 71

Claims

Deburring tool (1) for radial bores (8), having - a cutting body (3) having at least one cutting edge (31, 32), - a shank (2) which has the cutting body (3), and - a receiving body (4) having a holding section (21) for receiving a connecting section (20a) of the shank (2) which is spaced apart from the cutting body (3) in such a way that a rotational movement of the receiving body (4) about a longitudinal axis (X) of the receiving body (4) is transmitted via the shank (2) to the cutting body (3) for rotation of the cutting body (3) about the longitudinal axis (X), wherein the shank (2) is arranged in a deburring position away from the longitudinal axis (X) of the receiving body (4) by an offset (R) in order to define a cutting radius corresponding to the offset, characterized in that, the receiving body (4) is rigidly connected to the holding section (21) and is formed in one piece.Deburring tool (1) according to claim 1, characterised in that the offset (R) is provided by means of an angular offset in which a longitudinal axis (X') of the shank (2) is oriented at an angle 0° < α < 90° with respect to the longitudinal axis (X) of the receiving body (4), and / or the offset (R) is provided by means of a lateral offset in which the longitudinal axis (X') of the shank (2) is arranged laterally spaced apart with respect to the central longitudinal axis (X).Deburring tool (1) for radial bores (8), having - a cutting body (3) having at least one cutting edge (31, 32), - a shank (2) which has the cutting body (3), and - a receiving body (4) having a holding section (21) for receiving a connecting section (20a) of the shank (2) which is spaced apart from the cutting body (3) in such a way that a rotational movement of the receiving body (4) about a longitudinal axis (X) of the receiving body (4) is transmitted via the shank (2) to the cutting body (3) for rotating the cutting body (3) about the longitudinal axis (X), and in that the holding section (21) is formed such that it can be moved with respect to the longitudinal axis (X), to provide a displacement of the shank (2) with the cutting body (3) away from the longitudinal axis (X) by an offset (R) into a deburring position, - wherein the deburring tool (1) comprises an adjustable first stop (70) for adjusting the offset (R) in a first direction of movement (x1), wherein a first distance (d1) of the circumference of the holding portion (21) relative to a first wall portion (51a) of a wall (51) of the receiving body (4) can be fixed by means of the first stop (70), characterized byan adjustable second stop (71) for adjusting the offset (R) in a second direction of movement (x2) directed opposite the first direction of movement (x1), wherein a second distance (d2) of the circumference of the holding section (21) relative to a second wall section (51b) of the wall (51) of the receiving body (4) can be fixed by means of the second stop (71) in order to set the offset (R) of the shank (2) in the deburring position and to fix a defined cutting radius (R) corresponding to the offset securely.Deburring tool (1) according to claim 3, in which the holding section (21) is mounted in the receiving body (4) such that it can be pivoted via a bearing (23, 43, 44), so that the cutting edge (31, 32) can be pivoted in the direction of the longitudinal axis (X) or away from the latter in order to set different cutting radii (R).Deburring tool (1) according to claim 3 or 4, wherein the holding section (21) has a first (25a) and a second threaded bore (25b) and the first and second stops (70, 71) each have an external thread, wherein the first stop (70) is screwed into the first threaded bore (25a) protruding at least partially in the direction of the first wall section (51a) of the wall (51), and / or wherein the second stop (71) is screwed into the second threaded bore (25b) protruding at least partially in the direction of the second wall section (51b) of the wall (51).Deburring tool (1) according to claim 5, wherein the first (25a) and the second threaded bore (25b) are arranged parallel to one another and / or point in mutually opposite directions.The deburring tool (1) according to any one of claims 3 to 6, wherein the wall (51) is an inner-side wall of a peripheral wall (5) of the receiving body (4).Deburring tool (1) according to one of claims 3 to 7, wherein the wall (51) is formed by a cylindrical sleeve (5) arranged around a bearing portion (41) formed on the receiving body (4) for supporting the holding portion (21).Deburring tool (1) according to one of Claims 3 to 8, in which a through-opening (55a, 55b) for inserting and / or adjusting the first stop (70) or the second stop (71) is formed in each of the walls (51).Deburring tool (1) according to one of Claims 1 to 9, in which the shank (2) comprising at least the connecting portion (20a), a front shank portion (20) and the cutting body (3) is formed in one piece and is held in the holding portion (21).Deburring tool (1) according to claim 10, wherein the shank (2) with the connecting portion (20a) is mounted in a recess (34) formed in the holding portion (21) of the receiving body (4), wherein a base (34a) of the recess (34) forms a defined stop surface for the connecting portion (20a) of the shank (2) and is of planar design.Deburring tool (1) according to claim 11, wherein a transition between the base (34a) and a lateral wall (34b) of the recess (34) has a first chamfer (34c), wherein the first chamfer (34c) is smaller than a corresponding second chamfer (20b) formed on the connecting portion (20a).Deburring tool (1) according to any preceding claim, wherein the connecting portion (20a) is arranged offset from a central longitudinal axis (X") of the holding portion (21) by a distance (r).Deburring tool (1) according to any preceding claim, wherein the shank (2) is made of such an inelastic material that the shank (2) is not bent on itself during deburring of an edge (82).Deburring tool (1) according to one of claims 3 to 14, in which the holding section (21) has a substantially rectangular cross section, at least two opposing planar walls (22), and in which the receiving body (4) has a holding section receiving recess (41) with two correspondingly planar walls (42), on which the holding section (21) mounted therebetween is mounted with its planar walls (22) supported laterally.Cutting body (3) having a shank (2) which is insertable or inserted for use in a deburring tool (1) according to one of Claims 1 to 15.Cutting body (3) according to claim 16, characterised in that the shank (2) is provided with a chamfer (20b) at its end facing away from the cutting body (3).

Citation Information

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