Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B51/00—Tools for drilling machines
  • B23B51/10—Bits for countersinking
  • B23B51/105—Deburring or countersinking of radial holes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B51/00—Tools for drilling machines
  • B23B51/10—Bits for countersinking
  • B23B51/101—Deburring tools
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B51/00—Tools for drilling machines
  • B23B51/10—Bits for countersinking
  • B23B51/102—Back spot-facing or chamfering
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2220/00—Details of turning, boring or drilling processes
  • B23B2220/08—Deburring
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2251/00—Details of tools for drilling machines
  • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2251/00—Details of tools for drilling machines
  • B23B2251/64—Drills operating in the reverse direction, i.e. in the unscrewing direction of a right-hand thread

Definitions

• the present invention relates to a cutting tool which is particularly designed for deburring edges in cavities, such as for removing a ridge at edges of intersecting holes.
• the present invention relates to a method for the removal of burr on a spatially extending at a first end of an inner side of a hollow cylinder edge, in particular of burr on an edge formed by intersecting holes, which is in particular run with the cutting tool according to the invention.
• Burr removal here relatively time and / or tool intensive.
• a relatively complicated check is required to determine whether the burr has been completely removed.
• a still existing burr may have an unfavorable effect on the flow conditions generated or possibly lead to disruption of burrs connected aggregates in demolition of ridge components.
• Difficult is such a burr removal, especially at acute intersecting holes.
• the pending penetration edge is in the form of an oval
• this oval defines a curve in space that is symmetrical or asymmetrical depending on the crossing angle of the holes.
• the angle of the edge forming this oval is not constant over the course of the curve.
• Crossing angle of the holes also varies the edge angle usually in a range between 15 ° to 165 °. Furthermore, tolerances affect the Distances, angles and diameters of the intersecting holes also depend on the size of the edge angle at a particular point in the spatial curve of the edge.
• Tool shank having a clamping end and arranged on the tool-side shank end supporting body.
• the support body is adapted to a
• the cutting body can be applied to a edge to be deburred with a defined contact pressure.
• the cutting edge of the cutting body can descend the edge to be deburred and thereby eliminate existing burr there. In areas of the edge in which this has the smallest edge angle is bent around with the tool of the burr, so that with a subsequent
• DE 102012005246 A1 teaches a deburring tool for deburring in particular non-circular recesses in workpieces.
• This deburring tool is designed to function as a pushing and / or pulling tool which is driven stepwise about its longitudinal axis and / or driven in a displaceable manner and in the direction of its longitudinal axis.
• a cutting edge of the tool is designed to reshape the burr by applying a compressive force and then to be able to separate.
• two work steps have to be carried out in combination with each other, namely the forming and the separation. This causes a discontinuous operation and the formation of secondary ridge, which either reduces the quality of the product to be produced or
• a deburring tool which in a similar manner as the tool of DE 102007020207 B9 has a tool shank with a clamping end and a support body which supports a cutting body.
• the application of a fluid pressure causes the extension and application of the cutting body to the edge to be deburred.
• the cutting edge of the cutting body is designed such that it can be used in clockwise and counterclockwise rotation.
• the present invention is based on the object to provide a cutting tool and a method for cutting removal of burr for pleasure, with which in a simple, reliable and cost-effective the removal of burr in cavities, in particular at the edge of intersecting or crossing holes, is possible.
• the invention is supplemented by a computer program for carrying out the method according to claim 15.
• a cutting tool is provided according to the invention, which is particularly suitable for deburring edges in cavities.
• This cutting tool comprises at least one cutting element with a
• first cutting edge protruding first cutting edge whose cutting edge extends between two substantially parallel planes, wherein the first cutting edge at least a first
• Cutting segment and a second cutting segment which are arranged at the respective end portions of the cutting edge.
• the first cutting segment has a first wedge angle
• the second cutting segment has a second wedge angle.
• a minimum of the first wedge angle and the second wedge angle are each less than 88 °.
• the first free surface facing a different plane than the plane which faces the second free surface.
• Bisector of the second wedge angle extends in an angular range of 300 ° to 340 ° to the third plane.
• a cutting element two aligned in opposite directions wedge angle, which are formed on respective segment of the cutting element.
• the tool can be operated in opposite directions of rotation, so that in particular the edge can be machined at the same acute angle intersecting bores or existing burr with the same tool, depending on the respective direction of rotation, the corresponding cutting segment with the burr is bring into engagement , which forms an open space between cutting segment and burr.
• the Schneidsegemte is only the direction of rotation to reverse and position the cutting tool according translational, so that it can bring the respective cutting segment in engagement. Consequently, it is not necessary to move the tool from another side into the object to be machined and / or further work steps in addition to the cutting process
• the wedge angle is greater than the largest wedge angle of the first cutting segment and the second cutting segment.
• the wedge angle of the third cutting segment is 90 °.
• the length of the third cutting segment can be relatively small compared to the length of the serious one
• the length of the third cutting segment may be shorter than the shortest length of the first cutting segment and the second cutting segment. This means that the length of the third Schneidsegmets is shorter than the shorter of the two designated as the first and second cutting segments cutting segments.
• the length of the third cutting segment may be so short that the other two
• the first cutting identifies an arcuate course, so that the first cutting segment and the second cutting segment are designed arcuate. That is, the first cutting edge has a first wedge angle at a first end portion of its arc and a second wedge angle at a second end portion of its arc, wherein the first wedge angle and the second wedge angle are each less than 85 °.
• Cutting edge or its cutting edge causes it to extend in an arc in a spatial coordinate that runs between the two parallel planes.
• the two wedge angles are disposed between the two parallel planes on opposite sides of the cutting edge, the two wedge angles being in relation to the two parallel planes in each case
• the two end regions are separated from one another by a region arranged substantially in the central region of the arc, which region can be formed by the third cutting segment and which can have a wedge angle of 88 ° to 90 °.
• this may advantageously correspond in shape to a segment of a logarithmic spiral.
• this segment preferably extends in a range of 170 ° to 180 ° between the two parallel planes.
• the mean radius of the cutting edge can be in particular 0.5 mm to 1 mm.
• the shape of the first cutting edge is not on the said arc
• the two cutting segments, and in the case of an existing third cutting segment also the third cutting segment, can also be linear
• the respective wedge angle increases in the course of a respective
• Cutting segment from the end of the cutting segment towards the central portion of the first cutting edge is in this case also the respective end of the cutting edge of the first cutting edge. This means that with increasing distance from the cutting edge end of the respective wedge angle increases, which opens in the direction of one of the two parallel planes. This means that the
• Wedge angle over the length of each cutting segment is not made constant.
• the wedge angle can be dependent on the distance to the respective
• a minimum of the wedge angle of the first cutting segment and the second cutting segment is between 84 ° and 87 °.
• This central area is in the presence of the third cutting segment in this third area
• this reinforcing element also referred to as a shoulder
• this reinforcing element is preferably arranged substantially centrally between the first and the second cutting segment, so that the reinforcing element optionally separates the first and the second cutting element from one another.
• This so-called shoulder runs in her Longitudinal direction substantially perpendicular to the tangent, which lies at the intersection of the longitudinal axis of the reinforcing element with the cutting edge.
• the width of the reinforcing element or the shoulder should preferably be between 0.4 mm and 1 mm. In this embodiment, the reinforcing element or the shoulder should not reach to the edge, but end at least 0, 1 mm in front of the cutting edge.
• the cutting element has a second cutting edge, which adjoins a first end of the first cutting edge and extends at an angle of 90 ° to 130 ° with respect to the region of the first cutting edge on which the second cutting edge connected. That is, with linear cutting segments, there is an angle of about 1 10 ° to 130 ° between the second cutting edge and the cutting edge segment of the first cutting edge to which the second cutting edge is connected. In the case of an arc-shaped first cutting edge, there is therefore an angle of approximately 90 ° to 130 ° between the second cutting edge and a tangent on the first cutting edge
• Cutting edge can be at least segmentally arcuate designed.
• the cutting element of the cutting tool according to the invention may have a third cutting edge, which adjoins a second end of the first cutting edge, wherein the third cutting edge with the region of the first cutting edge, to which the third cutting edge is connected, an angle of 90 degrees to 130 degrees includes.
• Cutting segment of the first cutting edge to which the third cutting edge is connected is realized, wherein the tangent at a maximum distance of 1/10 of the length of the respective cutting segment at the end of the cutting edge is applied to this.
• an angle of approximately 110 ° to 130 ° is preferably realized between the third cutting edge and the region of the first cutting edge to which the third cutting edge is connected.
• the arrangement of the second cutting edge and the third cutting edge is also technically meaningful if the first cutting edge does not have the cutting edge segments with the wedge angle which is smaller than 88 °.
• the third cutting edge can be configured arcuate at least in segments, wherein it can also have a combination of arcuate and linear sections.
• the length and the width of the respective rake face of the second cutting edge and / or the third cutting edge are each greater than 0.02 mm.
• the cutting tool may be in one through the second cutting edge or the third
• Cutting edge cross section have a height of more than 0.2 mm, said length, the width and the height in the directions of the coordinate directions of a Cartesian coordinate system and therefore perpendicular to each other.
• the cutting tool according to the invention should advantageously have a tool shank with a longitudinal extent, wherein the cutting element is mounted substantially vertically displaceable with respect to an axis leading in the direction of the longitudinal extent.
• the longitudinal axis of the cutting tool or an axis parallel thereto forms the axis of rotation of the tool, so that the
• Cutting element is mounted radially movable.
• the cutting tool is advantageously formed when it has a support body with which the cutting element is mechanically supported or supported.
• a preferably made of an elastomeric material support body supports a support surface of a movable in a breakthrough of the tool shank cutting element and thus radially applied to the cutting element with a force when the cutting element is engaged with material to be machined.
• the cutting tool has a fluid supply device with which the cutting element can be exposed to a static and / or dynamic fluid pressure, so that when the pressure is applied to the cutting element, it can be moved.
• a pressed under pressure into a through hole of the tool shank liquid or gaseous and / or consisting of a gas-liquid mixture substance can thus move the cutting element to the outside.
• the cutting tool according to the invention is not limited to include only one cutting element, but it can - especially at
• a method for removing burr on a spatially extending edge at a first end of a hollow cylinder is further provided in which a cutting tool is positioned in relation to the edge to be deburred such that at least a portion of a cutting edge of a cutting element the cutting tool in the longitudinal direction of the hollow cylinder covers the burr to be removed, and the cutting element rotatory relative to the hollow cylinder and in
• the cutting element Before the actual deburring operation, the cutting element may e.g. be applied with a point of the cutting edge to the inner wall of the hollow cylinder, not excluding the case in which the tool is already rotating to approach the edge to be deburred.
• the rotation of the cutting element takes place simultaneously with the translation.
• the spatial edge is shaped three-dimensionally, that is, it stretches in the x, x, and z directions of a Cartesian coordinate system. This edge is traversed at least in sections and preferably completely. This means that the movement of the cutting edge in relation to the edge provided with the ridge is three-dimensional, namely simultaneously in rotational and translational movement, wherein the cutting edge of the
• the translatory feed is preferably 0.05-0.1 mm per revolution.
• the preferred feed movement takes place here only in the direction of the translational feed. This means that for the purpose of burr removal, the cutting element in
• the contour Moving essentially on the trajectory of a space curve whose projection into a plane that runs parallel to the planes between which the space curve of the edge to be deburred runs, the contour also corresponds to the projection of this edge in the parallel plane.
• the burr to be removed is located on an edge extending spatially at a first end of an inner side of a hollow cylinder, in particular on an edge formed by intersecting bores, from which it is removed.
• the variant of the method is not excluded, in which the inventive method on the outside of an object, in particular a cylinder is performed, in which case the hollow cylinder, for example in the form of a bore, extends through the cylinder, in particular extends radially through the cylinder.
• the ridge is not on one on an inside of a
• Hollow cylinder spatially extending edge is removed, but on an outer side of the hollow cylinder or the bore and thus substantially on the outside of the
• a three-dimensionally extending edge such as is formed, in particular, by bores which pass obliquely through and / or crossing one another.
• the method is not limited to the processing of pipes connected to each other, but can also be used on bodies or objects whose insides are hollow cylindrical, but the outer sides can have almost any shape.
• the cutting tool can be retracted by a second end of the hollow cylinder, which faces the first end of the hollow cylinder, said first end of the hollow cylinder having the ridge to be removed and ends in a further bore or a further hollow cylinder, so that the second end of the hollow cylinder This further bore or this further hollow cylinder is arranged at a distance from one another.
• Hollow cylinder can be carried out in that the hollow cylinder or the workpiece is fixed and the cutting element is moved rotationally and translatorily.
• the alternative in which at least one of the movements of rotation and translation of the hollow cylinder or workpiece is performed and in this movement, the cutting element is fixed or performs an opposite movement.
• Context which is preferably carried out via a three- or five-axis control.
• the three-dimensional edge can be traveled at least in sections in its three-dimensional course, wherein preferably the edge is completely traversed.
• the method is therefore particularly suitable for removing the burr at an edge formed by two intersecting bores, the bores enclosing an angle ⁇ of less than 90 °.
• the resulting fürdringungskante in the larger tube has the shape of an oval in plan view, wherein at an angle ⁇ of 90 ° between the holes of this oval is a circle.
• the oval edge with the ridge runs between a maximum Plane passing through the maxima of the edge curve and a minima plane passing through the minima of the edge curve, the maxima plane and the minima plane being perpendicular to the plane in which the angle ⁇ is between the hollow cylinders is, but parallel to each other.
• the rake surface of the cutting element is guided substantially perpendicular to the tangent at the point of contact of the cutting edge of the cutting element with the spatially extending edge.
• This substantially vertical guidance of the rake face of the cutting element should be realized in such a way that the rake face occupies an angle of 75 ° to 100 °, preferably between 87 ° and 93 °, to the tangent.
• Cutting edge forming edge of the cutting element is formed protruding and is moved so that at the point of contact of the cutting edge of the
• Cutting segments is formed, this normal is perpendicular to the respective linear edge segment edge in the direction of the extension of the ridge. If the cutting edge is formed by a curved cutting segment or by a plurality of curved cutting segments, this normal is perpendicular to a tangent which bears against the curved cutting edge at the point of contact of the curved cutting segment with the burr, and thus also extends in the direction of the extent of burr.
• the ridge extension direction is the direction in which the ridge protrudes, starting from the spatially extending edge. The said normal is thus aligned with the burr extension direction.
• the protruding cutting edge can have a curved edge, so that the cutting edge has a convex course. In the case of linear cutting segments which form the cutting edge, the cutting edge thus protrudes angularly.
• a maximum angular deviation between the normal and the grater extension direction of 5 ° is tolerable.
• Spambisvorgangs is provided in one embodiment of the method, that the cutting tool is moved in the longitudinal direction of the hollow cylinder beyond the first end and then the cutting edge of the cutting element to the
• the cutting tool is retracted by a second end of the hollow cylinder, which is opposite to the first end of the hollow cylinder.
• the Driven cutting element to a position below the edge to be deburred and then moved back towards the second end, so that the cutting edge on the
• the chipping process can be started by moving the chipper tool in a rotational and translatory manner. In a guided transversely through the hollow cylinder cross-section with the viewing direction from the second end in the direction of the first end of the hollow cylinder thus the cutting element is superimposed by the ridge.
• Zerspanungsvorgangs brought the cutting element from the outside to be deburred to the hollow cylinder or at the burr to be removed, positioned accordingly and then the cutting process to remove the burr is started. That is, the cutting force acting on the burr is generated by a pressing force acting in the cutting tool.
• the translation of the cutting element taking place simultaneously with the rotation of the cutting element takes place substantially continuously in the direction of the flash foot. That is, the translation is preferably carried out at the same speed, with maximum
• per revolution of the cutting tool is preferably a Delivery in z-direction from 0.01 mm to 1 mm, in particular from 0, 1 mm to 0.5 mm. It has been found that the translational movement should preferably be between 0.1 mm / min to 10 mm / min, preferably 0.6 mm / min.
• the rotational speed should preferably be between 1 min "1 and 1000 min " 1 ,
• a ratio of the angle ⁇ to the rotational speed ⁇ of: ⁇ / ⁇ 0.09 to 0.25 [rad min].
• the method is usually carried out in such a way that each point of the spatially extending edge is traveled several times from the cutting edge of the cutting element.
• Tool shank having a longitudinal extent, wherein the cutting element is mounted substantially vertically displaceable relative to a longitudinal axis extending in the direction of the longitudinal extent and the rotation about the longitudinal axis of the
• the cutting tool has a tool shank with a longitudinal extension, wherein the cutting element is mounted substantially vertically displaceable with respect to a longitudinal axis extending in the direction of the longitudinal extent, wherein the rotation takes place about an axis of rotation which is parallel and spaced from the longitudinal axis of the
• Tool shank is arranged.
• Zerspanungswerkmaschinezeugs is preferably mounted radially displaceable. At a distance of the longitudinal axis of the cutting tool or the tool shank to
• the difference of the maximum longitudinal extent of the shaped as an oval-shaped extending edge and the distance of the maximum extended cutting edge of the cutting segment with respect to the longitudinal axis of the cutting tool corresponds.
• the cutting element is displaced substantially perpendicularly with respect to the longitudinal axis, possibly with an angular movement of 5 °.
• the cutting tool has a support body, with which the cutting element is mechanically supported or supported, and which is suitable due to its elasticity to realize such adjustment movement of the cutting element.
• the cutting tool has a fluid supply device, with which the cutting element is exposed to a static and / or dynamic fluid, so that the cutting element moves. This means that an existing preferably of an elastomeric material support body, a support surface in a breakthrough of the Tool shank movably arranged cutting elements and thus supports the cutting element with a force radially.
• a liquid or gaseous material compressed under pressure into a through bore of the tool shank and / or consisting of a gas-liquid mixture moves the cutting element outwards.
• the fluid pressure is reduced and due to a restoring force in the cutting region, it is therefore also possible for the separating element to retract radially.
• Cutting tool has a plurality of cutting elements, wherein during the
• Rotation movement and after conditioning of the cutting edge of the cutting elements of the cutting edge to be removed or to be traversed spatially extending edge at least one cutting edge constantly in the ridge or at the edge is engaged.
• Cutting elements are arranged substantially regularly on the circumference of the tool shank of the cutting tool.
• the cutting elements are preferably in
• the respective cutting element on a second cutting edge which adjoins a first end of the first cutting edge and extends at an angle of 90 ° to 130 ° with respect to the region of the first cutting edge on which the second cutting edge is connected, and / or that a respective cutting element has a third cutting edge, which adjoins a second end of the first cutting edge, wherein the third cutting edge and the region of the first cutting edge, to which the third cutting edge is connected, an angle of 90 ° include up to 130 °, and that
• Hollow cylinder spatially extending edge in a secondary hollow cylinder, which leads into a main hollow cylinder, and then the cutting tool is inserted into the main hollow cylinder and the second or third cutting edge on the edge between the main hollow cylinder and the side Hollow cylinder is removed.
• the radius of curvature of the ridge-edged edge is so small that the
• Cutting element due to a necessary thickness can not extend the entire edge, but forms a secant in this curvature in particularly narrow curved areas.
• a computer program is provided in addition, which provides a program code for performing all the method steps according to one of preceding claims, when the computer program is executed in a computer.
• This means that software also forms part of the teaching according to the invention if this software is suitable for carrying out the method steps according to the invention, if this software is realized by a control device which performs the function of a computer.
• FIG. 1 a a first embodiment of the cutting tool according to the invention in a view from one side
• FIG. 1 b shows a sectional view of the cutting tool according to the invention along the section D-D according to FIG. 1 a, FIG.
• FIG. 1c shows a sectional view of the cutting tool according to the invention along the section E-E in FIG. 1a, FIG.
• FIG. 1 d A cutting tool according to the invention for carrying out the invention
• FIG. 1 e a first frontal view of the cutting tool shown in FIG. 1 d
• FIG. 1f a second frontal view of the cutting tool shown in FIG. 1d
• FIG. 1 g a sectional view along the section B-B through the cutting tool illustrated in FIG. 1 d,
• FIG. 1 h a sectional view along the section A - A through the cutting tool illustrated in FIG. 1 d,
• FIG. 1 i a plan view of the cutting tool illustrated in FIG. 1 d,
• FIG. 1j a sectional view along the section C-C through the cutting tool illustrated in FIG. 1d,
• FIG. 2 Two hollow cylinders crossing one another in a side view
• FIG. 3 the enlarged detail X from FIG. 2,
• FIG. 4 shows a plan view of the connecting edge between the intersecting hollow cylinders illustrated in FIGS. 2 and 3; 5 shows an illustration of the cutting tool according to the invention when deburring an obtuse-angled region of the edge, FIG.
• FIG. 6 shows an illustration of the cutting tool according to the invention during deburring of an acute-angled region of the edge
• Figure 7 An illustration of a cutting tool according to the invention in the
• FIG. 8 shows an illustration of the cutting tool when deburring an edge of intersecting bores
• FIG. 9 shows an illustration of the cutting tool in the removal of burr on solid material penetrated by a bore in a first position
• FIG. 10 A representation of the cutting tool in the removal of burr on the solid material penetrated by the bore, with reference to FIG. 9
• FIG. 1 In order to explain the cutting tool according to the invention which preferably carries out the method according to the invention, reference is initially made to FIG. 1 with the views and embodiments shown in the individual illustrations a - j.
• the cutting tool Z comprises a cutting element 1, which is essentially projecting in relation to a tool shank 70.
• the cutting element 1 is defined in its projecting region by a first cutting edge 10, which is delimited by a cutting edge 14, so that the first cutting edge 10 has a first end 1 1 and opposite a second end 12.
• a illustrated embodiment is clearly a first, linear running cutting segment 20 and a second, also linearly executed second
• Cutting segment 30 are through a central portion of the first cutting edge 40
• the length of the first cutting edge Ls is at least twice as long as the length of the central region Lz.
• the length of the first cutting edge Ls may in particular be between 1.5 and 2 mm, and the length of the central region Lz may be between 0.6 and 1 mm.
• the cutting tool is not limited to linear cutting segments 20,30 that these cutting segments 20,30 from each other by a third Cutting segment 41 are separated, but it may also be designed such that the first cutting segment 20 and the second cutting segment 30 are connected directly to each other in the central region of the first cutting edge 40 to each other.
• Figure 1 d is another embodiment of the invention
• Embodiment exists in the central region of the first cutting edge 40, a third
• Cutting segment which is preferably also arcuate in arcuate first and second cutting segments 20,30.
• Reinforcing element 42 is arranged, but not up to the cutting edge 14th
• the first cutting segment 20 has a first wedge angle 21 and the second cutting segment 30 has a second wedge angle 31.
• first wedge angle 21 when the plane of the cutting element 1 is guided substantially perpendicularly through the first wedge angle 21, a first free surface 23 is formed on an edge to be deburred, and a second free surface 33 is formed by the second wedge angle 31.
• FIG. 1j shows that the first cutting edge 10 essentially extends between a first plane E1 and from a second plane E2.
• the first wedge angle 21 on the first cutting segment 20 opens in this case to the second plane E2, and the second wedge angle 31 on the second cutting segment 30 opens to the first plane E1. That is, the two wedge angles 21, 31 are oppositely opened with respect to the third plane E3 extending between the first plane E1 and the second plane E2.
• the bisecting line of the first wedge angle extends in an angular range of 120 ° to 160 ° with respect to the third plane
• the bisector of the second wedge angle extends in an angular range of 300 ° to 340 ° with respect to the third plane E3.
• a first wedge angle 21 is formed at the first end of the first cutting edge 10 and a second wedge angle 31 is formed at the second end 12 of the first cutting edge 10, wherein the two wedge angles 21, 31 are aligned such that the cutting tool can be used in opposite directions of rotation, being in a first
• a second cutting edge 50 adjoins the first end 1 1 of the first cutting edge 50 which, in the embodiment shown here, is slightly curved, but not limited thereto, but also linear can.
• a third blade 60 which is executed in the embodiment shown here is substantially linear, however, similar to the second blade also connected with a bow portion of the first blade 10.
• FIG. 1 b shows the section along the course D-D in FIG. 1 a, the rake face 51 of the second cutting edge 50 being visible here.
• FIG. 1c shows the section along the section E-E in FIG. 1a, so that here the rake face 61 of the third cutting edge 60 can be seen. It can also be seen that the second cutting edge 50 as well as the third cutting edge 60 are each provided with a wedge angle smaller than 90 °.
• the length L and the width B of the respective rake face 51, 61 should each be greater than or equal to 0.2 mm. Likewise, the height H should be more than 0.2 mm.
• auxiliary hollow cylinder 100 crosses a main hollow cylinder 200 at an acute angle or dips into it.
• a first end 101 of the auxiliary hollow cylinder 100 abuts against the main hollow cylinder 200.
• a second end 102 of the sub-hollow cylinder 100 is away from the main hollow cylinder 200.
• the longitudinal axes of the slave hollow cylinder 100 and the main hollow cylinder 200 include an angle ⁇ .
• Figure 3 is an enlarged view of the indicated in Figure 2 cutout X can be seen, here clearly a ridge 400 can be seen, which connects with its Gratfuß 401 formed on the side between the hollow cylinder 100 and main hollow cylinder 200 edge 300.
• the oval-shaped edge 300 results from the fact that the auxiliary hollow cylinder 100 is connected at an acute angle to the main hollow cylinder 200.
• the edge 300 has a three-dimensional course in this acute-angled arrangement, so that it has a first maximum 301 and an opposite one second maximum 302 forms, and substantially offset by 90 °, a first
• the oval-shaped edge 300 is arranged between a maximum plane 305, in which the first maximum 301 and the second maximum 302 are arranged, and a minimum plane 306, in which the first minimum 303 and the second minimum 304 are arranged runs.
• FIGS. 5 to 7 show individual steps of the method according to the invention, which is carried out with the illustrated cutting tool according to the invention.
• Cutting tool Z from a translational movement 600 along the axis z, in order to remove the three-dimensionally extending edge 300 shown in Figures 2 and 4.
• the cutting tool Z is shown substantially rotated by 180 ° in a position shown in relation to FIG. It can be seen that further the second cutting segment 30 acts on the edge 300 in the acute-angled region. Upon further rotation of the cutting tool Z, this is again in
• FIG. 7 shows a further method aspect of the method according to the invention, in which the cutting tool Z, here designed only with linear cutting segments 20, 30, is not brought into engagement with the edge 300 in the secondary hollow cylinder 100, but in the main hollow cylinder 200
• the third cutting edge 60 is in engagement with the edge 300 or with the burr 400 present thereon.
• burr 400 can be at this point of the edge 300, at which also the second maximum 302 is present, remove.
• FIG. 8 shows the embodiment of the method according to the invention with the preferably used cutting tool according to the invention in the removal of burrs on an edge passing through holes penetrating one another, in the case of FIG
• the cutting tool Z has been moved into a position by the secondary hollow cylinder 100, in which the cutting tool Z abuts the edge 300, which is realized by the immersion of the lower secondary hollow cylinder 100 in the main hollow cylinder 200 , In this case, the cutting tool engages with the second cutting segment 20 with the edge 300. Also in this process embodiment, the spatially extending edge 300 is deburred by simultaneous rotation and translation of the cutting tool, wherein the cutting tool Z follows substantially the contour of the edge 300. From this it can be seen that the same cutting tool can be used which likewise has the features shown in FIGS. 5 to 7
• FIGS. 9 and 10 show a method embodiment in which the
• Submersible movement in the direction of the coordinate z opposite edge 300 is processed with the first cutting segment 20.
• the edge 300 present here can also be machined with the same cutting tool Z, with the second cutting segment 30 now engaging the edge 300 as shown , Also in the process embodiments shown in FIGS. 9 and 10, this leads to
• the present invention is not limited to the positions or movements of the cutting tool Z shown in FIGS In the deburring process, the tool may also be positioned with respect to the solid material 700 such that the axis of rotation of the cutting tool Z is substantially perpendicular to the top or to a tangent to a cross section of the solid material 700 at its top point.
• Cutting element 1 first cutting edge 10 first end of the first cutting edge 1 1 second end of the first cutting edge 12 convex arcuate course 13th
• Cutting edge 14 first cutting segment 20 first wedge angle 21st

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