EP3624974A1 - Entgratwerkzeug zum entgraten von bohrungsverschneidungen - Google Patents
Entgratwerkzeug zum entgraten von bohrungsverschneidungenInfo
- Publication number
- EP3624974A1 EP3624974A1 EP18724544.4A EP18724544A EP3624974A1 EP 3624974 A1 EP3624974 A1 EP 3624974A1 EP 18724544 A EP18724544 A EP 18724544A EP 3624974 A1 EP3624974 A1 EP 3624974A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting edge
- deburring
- deburring tool
- bore
- tool according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 110
- 238000003754 machining Methods 0.000 claims abstract description 30
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- B23B2215/00—Details of workpieces
- B23B2215/20—Crankshafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/34—Means for guiding
Definitions
- the invention relates to a deburring tool for deburring a bore intersection in the interior of a workpiece according to the preamble of claim 1.
- crankshaft bearings For reciprocating engines, sufficient and continuous lubrication of crankshaft bearings is crucial to avoid engine damage.
- the lubrication of crankshaft bearings is known to take place via a system of lubricating oil channels or oil holes in the interior of the crankshaft.
- generally diametrically continuous main bores and additionally obliquely to a main bore transverse bores are provided in some main bearings, which each open at an adjacent hub bearing surface.
- the transverse bores open in the region of a bore intersection at a more or less acute angle in the main bore.
- the main bores running perpendicular to the crankshaft axis and then the transverse bores are produced.
- two transverse bores are partly provided on opposite sides of the main bore, wherein the mouth regions are at an axial distance from one another to the main bore.
- the main bore can be strong during production, so that although the position of the hole entry at the beginning of the bore, but not the exit position is defined on the opposite side of the bore.
- German Patent DE 40 15 412 C1 describes that the deburring of the mouth points of at least two holes in the interior of a body can succeed with a connected to a high-pressure water pump, inserted into the hole, frontally closed and rotationally driven probe with circumferentially opposite outlet channels, which are directed in opposite directions.
- the utility model DE 20 2004 003 332 U1 describes deburring tools with a geometrically determined cutting edge.
- the deburring tool is a rotary driven tool having a shank portion at a rear axial end of the tool and a substantially cylindrical machining portion at a forward end of the tool.
- In the machining part at least one helical and preferably undercut groove is incorporated.
- a conical gate is provided at the front axial end of the tool.
- the cylindrical machining part has, at least in one section, means for increasing the radial compliance.
- a diametrically continuous longitudinal cutout starting from the front end is provided for this purpose, so that a fork-shaped slotted cutting part is produced. Described is the deburring of circumferential ridges at the transition from radial bores into a central axial bore.
- the present invention has the object to provide a deburring tool for deburring a bore intersection in the interior of a workpiece, which is relatively easy and inexpensive to produce and is characterized by reliable function and longevity.
- the deburring tool should be suitable for reliably deburring the mouth region from transverse bores extending obliquely to a main bore in a simple manner.
- the invention provides a deburring tool having the features of claim 1.
- Advantageous developments are in the dependent claims specified. The wording of all claims is incorporated herein by reference.
- the deburring tool has a tool body having a longitudinal axis extending from a front end to a rear end of the tool body. Subsequent to the rear end, the deburring tool has a clamping section for clamping into a tool holder of a processing machine. Subsequent to the front end, the deburring tool has a machining section insertable into the main bore with at least one geometrically determined cutting edge for removing a burr at the transition of a transverse bore into the main bore.
- the tool body preferably has a circular cylindrical basic shape and may be e.g. essentially consist of a round rod made of tool steel on which functional contours are produced during production by material-removing machining, in particular in the processing section.
- a special feature of the deburring tool is that a free surface is formed on a first side of the machining section, which extends from the front end of the tool body in the longitudinal direction of the tool body, preferably parallel to the longitudinal axis, possibly also with deviations from exact parallelism.
- the free surface has between the delimiting longitudinal edges (at the transition to the lateral surface of the tool body) to a width corresponding to a circumferential angle of a maximum of 170 °.
- the width is adapted to the diameter of a transverse bore to be deburred such that when the deburring tool is inserted into the main bore, the front end of the deburring tool can be guided past a burr to be deburred without touching the burr formed thereon, when the free surface faces this transverse bore during insertion.
- the deburring tool is designed as a self-guiding tool.
- a guide head with a matched to the inner diameter of the main bore first guide portion for play-free guidance of the processing section is formed in the main bore on the processing section.
- An outer surface or lateral surface of the first guide section which comes into contact with the bore wall and preferably has a continuous cylindrical curvature extends over a circumferential angle of more than 180 °, in particular 190 ° or more, so that the guiding function is ensured.
- the guide section has on the first side a part of the free surface.
- the preferably cylindrical outer contour or circumferential surface of the first guide section then extends in the circumferential direction between the longitudinal edges of the free surface.
- a first cutting edge is formed with a first cutting edge, which extends between the longitudinal edges of the free surface arcuately about the longitudinal axis.
- a recess is formed, which forms a Spansammeiraum for receiving a sheared off by the first blade ridge when introduced into the main bore machining section together with the bore wall of the main bore.
- This recess may for example be arranged diametrically opposite the open space.
- the first cutting edge is aligned so that it can not cut when inserting the deburring tool, but when removing the deburring tool from the main bore.
- the deburring tool is thus placed under tensile stress during deburring by means of the first cutting edge, whereby a particularly powerful deburring without bending the deburring tool is possible.
- the working movement of the deburring tool during deburring is a pure axial translational movement; a rotation of the deburring tool during deburring is neither intended nor desired. It has been recognized that a "pulling cut" such as that produced by rotary tools with helical circumferential cutting edges may tend to bend a burr rather than shave the burr, especially when deburring skewed holes.
- the deburring tool according to the claimed invention essentially acts like a broaching tool, which proves to be very advantageous in particular when deburring oblique bores.
- first cutting edge extends at a slight skew angle
- first cutting edge lies in a plane perpendicular to the longitudinal axis. This avoids any parts of a pulling cut when pulling out the deburring tool.
- first cutting much easier to manufacture as inclined cutting, as they are present for example in helical circumferential cutting edges.
- the width of the free surface can in principle be adapted to the machining task, in particular to the diameter ratio D Q / D H between the diameter D Q of a transverse bore and the diameter D H of the main bore. If this ratio is 1 or close to 1, then the free surface should be relatively wide relative to the diameter of the deburring tool. For smaller cross holes (eg D Q / D H ⁇ 0.5), the width of the free surface may be smaller.
- a good compromise between mechanical stability of the deburring tool in the machining section on the one hand and sufficient size of the resulting free space on the other hand can be achieved if the free surface has a measured between the longitudinal edges width, which is in the range of the diameter of the transverse bore.
- the width may be, for example, in a range of about 50% to about 95% of the diameter of the processing section.
- the width of the free surface may, for example, correspond to a circumferential angle from the range of 40 ° to 160 °.
- the free surface is a flat surface, ie a plane surface which is stretched by chords on the circumference of the cylindrical tool body.
- a flat free surface merges along axially parallel longitudinal edges into the cylindrical sections of the outer contour of the tool body. The obtuse-angled longitudinal edges do not act as cutting edges.
- a level education of the open space is not mandatory.
- the free surface could also be formed as running in the longitudinal direction of the deburring tool concave or V-shaped groove or groove.
- the length of the flank (measured in the longitudinal direction of the deburring tool) may correspond to a multiple of the diameter of the processing section.
- the free surface may be so long that its length corresponds to 2 times to 6 times the diameter of the tool body.
- the recess adjoining the first cutting edge can have a plane surface running parallel to the longitudinal axis, in particular a plane surface which runs parallel to a likewise plane free surface.
- the guide head has a second guide portion for play-free guidance of the machining portion in the main bore, wherein the second guide portion is disposed at an axial distance from the first guide portion, extending over a circumferential angle of more than 180 ° and on the first side a part the free space has.
- the free-surface portion of the processing section can thus be provided with sufficient axial distance to each other lying guide portions, whereby a large guide length is formed and thus a secure axial guidance of the processing section during all working movements can be ensured.
- That the axial distance may be greater than the diameter of the tool body, wherein the axial distance is preferably more than twice the diameter.
- Preferred embodiments of deburring tools are characterized in that, in addition to the first cutting edge, a second cutting edge is formed with a second cutting edge which extends in an arc around the longitudinal axis, wherein the second cutting edge is oriented opposite to the first cutting edge.
- the cutting edges of the two cutting thus have in opposite directions.
- the second cutting edge is preferably mounted farther from the front end than the first cutting edge so that the first cutting edge and the second cutting edge have facing cutting edges.
- the second cutting edge is in a plane perpendicular to the longitudinal axis, so that in the axial stroke of the deburring tool when using the second cutting also no share of a pulling section is present, but an exclusively axially acting cutting force similar to a broaching process.
- a recess for receiving chips can be provided, which are sheared off by the second cutting edge.
- the second cutting edge can lie beyond the second guide section such that the second guide section lies between the first cutting edge and the second cutting edge.
- the second cutting edge may be formed as a front end of the cylindrical part of the tool body or the tool shank so that the second cutting edge can be formed on a shank portion of the tool body.
- the second cutting edge can completely run around the deburring tool, ie over a circumferential angle of 360 °.
- a generic deburring tool can also be developed or characterized in such a way that the processing section has exactly two geometrically determined cutting edges (the first cutting edge and the second cutting edge) which are arranged at an axial distance from one another and are aligned in the opposite direction. Each of the cutting edges can be used to remove a burr at the junction of a Cross hole to be provided the main bore.
- the deburring tool can thus be optimally adapted to workpieces, such as crankshafts, for example, in which transverse bores (oblique bores) running obliquely from the main bore at different axial positions lead from different, possibly opposite oblique directions into the main bore.
- Fig. 1 shows an embodiment of a workpiece to be deburred in the form of a crankshaft for an internal combustion engine together with deburring tools which are inserted in main bores of the lubricating oil system;
- Fig. 2 shows a longitudinal section through the deburring tool
- Fig. 3 shows a side view of the deburring tool of Figure 1 in a rotational position, which is changed over the rotational position of Figure 2 by a few degrees.
- FIG. 4 shows an enlarged detail longitudinal section of the processing section of the starting means
- Fig. 5 shows an axial front view of the front end of the deburring tool
- FIGS. 6 to 12 show different phases of a deburring process using the integrating method.
- FIG. 1 shows an embodiment of a workpiece WS in the form of a crankshaft for an internal combustion engine.
- the crankshaft which can be rotated about a crankshaft axis KWA has five main bearings HL1 to HL5 centered relative to the crankshaft axis, and between each two adjacent main bearings each lift bearings HU1 to HU4, on which the connecting rods are mounted when the internal combustion engine is assembled.
- each main bore HB which extends essentially perpendicular to the crankshaft axis through the main bearing and can be produced, for example, by deep drilling.
- Each main bore has an inlet opening ET on the side at which the deep drilling tool is attached to the prescribed position, as well as substantially diametrically opposite an outlet opening AT, at which the deep drilling tool exits after penetrating the workpiece. While the position of the inlet opening can be fixed by the machining process, the position of the outlet opening is not exactly defined depending on the machining process, since the deep drilling tool can run due to the relatively large length of the main bore compared to the diameter.
- two main bores are sufficient to supply oil to all the crank bearings via transverse bores.
- two transverse bores QB1 and QB2 extending at an acute angle (in the example about 45 °, frequently between 30 ° and 60 °) to the main bore of each of the main bores lead to the respective axially adjacent crank bearings.
- the main hole and the cross holes lie in a common plane.
- the first transverse bore QB1 opens obliquely into the main bore in an orifice area which is relatively close to the inlet opening ET, while the second transverse bore QB2 opens at an acute angle in an orifice area which is relatively close to the outlet opening AT.
- the mouth areas are thus at an axial distance from each other on radially opposite sides of the main bore.
- burrs are typically formed at the bore intersections which protrude into the bore of the main bore at the bore intersection (see for example Fig. 6B).
- the burrs are mainly formed on the acute-angled side of an orifice where the workpiece material for drilling intersects at an acute angle. These burrs must be removed quickly (ie in the shortest possible cycle time) and reliably during the production of the crankshaft. This is possible with deburring tools according to the claimed invention. An embodiment of a deburring tool WZ will be explained in more detail with reference to FIGS. 1 to 5. Fig.
- FIG. 1 shows an embodiment of a workpiece to be deburred in the form of a crankshaft for an internal combustion engine together with deburring tools which are inserted into main bores of the lubricating oil system.
- 2 shows a longitudinal section through the deburring tool WZ.
- Fig. 3 shows a side view in a rotational position, which is changed relative to the rotational position of Fig. 2 by a few degrees.
- 4 shows an enlarged detail longitudinal section of the cutting section of the deburring tool
- FIG. 5 shows an axial front view of the front end of the deburring tool. This allows the function-relevant tool contours to be well understood.
- FIGS. 6 to 12 explain the different phases of a typical deburring process when using the deburring tool.
- the deburring tool WZ has a tool body WZK, which essentially consists of a cylindrical round rod made of tool steel, on which decisive structures are produced during tool production by material-removing machining for the tool function.
- the tool body WZK has a central longitudinal axis LA which extends in a straight line from the front end VE to the rear end HE of the tool.
- the diameter D of the tool body is adapted to the inner diameter of the later to be machined main bore HB so that it would fit into the main bore substantially free of play, but easily axially displaceable.
- the nominal diameter D of the deburring tool can be, for example, a few hundredths of a millimeter less than the nominal inner diameter of the main bore. Typical diameters may e.g. in the range of a few millimeters, e.g. in the range of 4 mm to 6 mm.
- a clamping section ESA for clamping the deburring tool into a tool holder WZA of a processing machine (see FIG.
- a plane free surface FFH extending parallel to the longitudinal axis LA is provided so that the clamping section has a non-circular cross section with a single rotational symmetry. If the tool holder WZA of the processing machine has a mating surface matching the free surface, the deburring tool can thus be received in the tool holder in a defined manner only in a single rotational position.
- a machining section BA which is introduced when using the Entgrattechnikmaschines in the main bore HB and all tool contours relevant for the deburring having.
- the insertion is facilitated by a conical insertion section EFA immediately at the front end.
- the machining section BA has exactly two geometrically determined cutting edges S1, S2, which are arranged at an axial distance from each other, are oriented in opposite directions and are each provided for eliminating a ridge at the transition of one of the transverse bores in the main bore.
- the processing section can therefore also be referred to as the cutting section BA.
- the cutting section BA has at its bottom in Fig. 2 first side ST1 a flat free surface FF, which is in the example in the same plane as the rear free surface FFH, but this is not mandatory.
- the open space can be formed for example by milling or erosion on the tool body.
- the free surface FF extends from the front end VE of the cutting portion parallel offset to the longitudinal axis LA over a length corresponding to a multiple of the diameter D, for example, three times to six times, in the example about five times this diameter.
- longitudinal edges LK1, LK2 are formed, which do not act as cutting.
- the width B of the flank FF between these longitudinal edges is adapted to the diameter of the transverse bores QB1, QB2 such that the width B is greater than or equal to the mouth width in this direction.
- the width B corresponds in the example case to a circumferential angle of about 120 ° to 125 ° (see Fig. 5) and may for example be in the range of 60 ° to 160 °.
- the width should be such that when inserting the deburring tool, the free surface FF of the mouth opening of a transverse bore can be facing and the deburring tool can then be pushed past the mouth bore, without touching the existing edge of the muzzle edge.
- the machining section BA or cutting section BA of the deburring tool WZ is equipped with a guide head FK, which on the one hand serves to center the deburring tool when entering the main bore and which ensures, on further retraction into the main bore, that the deburring tool can follow the course of the main bore, also if it deviates with increasing depth from the orientation in the region of the inlet opening.
- the guide head ensures that the cutting edges are actually located in the immediate vicinity of the bore inner wall, so that a complete shearing off of the ridge is also ensured in the region of the flashback or burr root.
- the guide head FK has, in the vicinity of the front end VE, a first guide section FA1, which is designed for the play-free guidance of the machining section in the main bore.
- the first guide portion has over most of its circumference the cylindrical outer contour of the original tool body. This cylindrical outer contour extends over more than 180 ° of the circumference, so that a reliable guide is ensured within the main bore.
- the cylindrical guide surface ends at the longitudinal edges LK1, LK2 of the free surface FF.
- the enclosed by the cylindrical guide surface of the first guide section circumferential angular range is in the example at about 230 to 240 °°.
- the guide head FK has a second guide section FA2, whose cylindrical outer contour extends over a circumference angle of more than 180 °, as in the first guide section, and encloses part of the flank face.
- the two spaced-apart guide sections provide for the deburring tool a guide length which corresponds to a multiple of the diameter of the deburring tool and in the example is approximately between three times and four times this diameter.
- the deburring tool WZ has exactly two geometrically determined cutting edges S1 and S2.
- a first cutting edge S1 is formed on the side of the first guide section FA1 facing away from the front end VE and has a first cutting edge SK1, which in a plane perpendicular to the longitudinal axis LA circular arc over a circumferential angle of about 230 ° to about 240 ° around the Longitudinal axis runs around.
- the cutting edge is undercut, that is provided with a positive rake angle, which is in the example at about 10 ° and generally, for example. can be between 5 ° and 20 °.
- the second cutting edge S2 of the deburring tool is located on the side of the second guide section FA2 facing away from the front end VE, ie outside the guide length at the transition to the cylindrical part of the tool body WZK, which can also be referred to as a tool shank.
- the second cutting edge S2 has a second cutting edge SK2, which extends over the entire circumference of the tool, so over 360 ° circular in a direction perpendicular to the longitudinal axis extending plane.
- the open space provides a chip space for receiving a separated chip.
- Another partially circumferential chip space is located between the second cutting S2 and the second guide portion FA2.
- the two cutting edges thus have facing cutting edges. They are at an axial distance AB to each other, which is significantly larger than the diameter D of the tool body and in the example between twice and three times this diameter. While the first cutting edge S1 can cut off a burr in a backward stroke of the deburring tool, the second cutting edge S2 is provided to shear a burr in a forward stroke of the deburring tool (toward the front end).
- the working movements of the deburring tool when shearing off a ridge are not rotational movements, but pure axial lifting movements, so that the deburring tool works in this respect similar to a broaching tool.
- FIGS. 1 Each show sections through the crankshaft in a plane which is spanned by the longitudinal axes of the main bore and the transverse bores.
- the deburring tool WZ is retracted from the inlet opening ET of the main bore HB.
- the deburring tool is previously oriented with respect to its rotational position so that the free surface FF, ie the first side ST1 of the deburring tool, faces the first transverse bore QB1 (FIGS. 6A and 7). This ensures that the deburring tool does not touch the first burr GR1 when inserting the first guide section FA1 and the first cutting edge S1.
- the deburring tool is inserted so far that the ridge of the first transverse bore QB1 is located between the second guide section FA2 and the second cutting edge (FIGS. 6A and 7). Both guide sections FA1, FA2 should then be in the main bore to ensure axial guidance against tilting of the deburring tool.
- the same insertion movement is continued without rotation of the deburring tool until the second cutting edge S2 has grasped the first burr and has sheared off at the burr root and behind the mouth of the first transverse bore QB1 is located.
- the separation of the first ridge thus takes place similar to a clearing movement at the same time on the entire width of the ridge root. Displacement of the first ridge in the first transverse bore without shearing is reliably prevented by this cutting kinematics.
- the purely translatory insertion movement is then stopped before the first guide section reaches the mouth of the second transverse bore QB2.
- the deburring tool WZ can then be located, for example, in the insertion position shown in FIG. 8.
- the deburring tool is then further retracted approximately to a position where the first cutting edge S1 (the cutting edge closer to the leading end) is beyond the second ridge, e.g. approximately at half the height of the inlet opening of the second transverse bore QB2 (see Fig. 10).
- the deburring tool is then rotated again by 180 °, so that the free surface FF is again in the direction of the first transverse bore (Fig. 1 1).
- the first cutting edge then lies beyond the mouth of the second transverse bore between the latter and the outlet opening AT at the bore wall.
- the tool is pulled out in the direction of the inlet opening ET (FIG. 12).
- the second burr i. the burr on the acute-angled side of the second transverse bore QB2, sheared off without tool rotation in the manner of a clearing movement and enters the receiving space AR in front of the first cutting edge S1.
- the deburring tool is pulled out of the main bore, wherein the burrs received in the respective receiving spaces are usually already taken along by the deburring tool.
- the deburring tool can of course be used for deburring holes that have only a single transverse bore or more transverse holes that do not necessarily have to open on diametrically opposite sides in the main bore.
- the two mutually oppositely directed peripheral cutting edges which are at a relatively large distance from each other, allow a deburring either during insertion or when pulling out the deburring tool, so that for each orientation of a ridge that optimally suitable cutting edge can be used, which does not push aside the ridge, but shears clean at the ridge root.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017208567.3A DE102017208567B4 (de) | 2017-05-19 | 2017-05-19 | Entgratwerkzeug zum Entgraten von Bohrungsverschneidungen |
PCT/EP2018/062412 WO2018210767A1 (de) | 2017-05-19 | 2018-05-14 | Entgratwerkzeug zum entgraten von bohrungsverschneidungen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3624974A1 true EP3624974A1 (de) | 2020-03-25 |
Family
ID=62165575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18724544.4A Withdrawn EP3624974A1 (de) | 2017-05-19 | 2018-05-14 | Entgratwerkzeug zum entgraten von bohrungsverschneidungen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3624974A1 (de) |
DE (1) | DE102017208567B4 (de) |
WO (1) | WO2018210767A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD249426A1 (de) * | 1986-05-28 | 1987-09-09 | Eberswalde Kranbau | Werkzeug zum beidseitigen entgraten von durchgangsbohrungen |
DE4015412C1 (en) | 1990-05-14 | 1991-06-20 | Lothar 3300 Braunschweig De Clavey | Metal work deburring tool - has sonde inserted into bore to discharge high pressure water |
DE20210551U1 (de) * | 2002-07-08 | 2003-11-20 | Gühring, Jörg, Dr., 72458 Albstadt | Drehangetriebenes Werkzeug |
DE202004003332U1 (de) | 2004-03-03 | 2004-05-06 | Gühring, Jörg, Dr. | Drehantreibbares Werkzeug zum Entgraten von Bohrungen |
WO2008083646A2 (de) * | 2007-01-08 | 2008-07-17 | Dr. Beier Entgrattechnik | Entgratwerkzeug |
DE102012005246A1 (de) * | 2012-03-14 | 2013-09-19 | Ulf Heule | Entgratwerkzeug zur Entgratung von insbesondere unrunden Ausnehmungen in Werkstücken |
DE102014113108A1 (de) * | 2014-09-11 | 2016-03-17 | Technische Universität Darmstadt | Verfahren und Entgratwerkzeug zum Entgraten einer Bohrungsverschneidung |
DE102015102874A1 (de) * | 2015-02-27 | 2016-09-01 | Hans-Michael Beier | Zerspanungswerkzeug |
-
2017
- 2017-05-19 DE DE102017208567.3A patent/DE102017208567B4/de active Active
-
2018
- 2018-05-14 WO PCT/EP2018/062412 patent/WO2018210767A1/de active Application Filing
- 2018-05-14 EP EP18724544.4A patent/EP3624974A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102017208567A1 (de) | 2018-11-22 |
DE102017208567B4 (de) | 2021-07-08 |
WO2018210767A1 (de) | 2018-11-22 |
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