EP3126080A1 - Vorrichtungen zum bohren gekrümmter löcher - Google Patents
Vorrichtungen zum bohren gekrümmter löcherInfo
- Publication number
- EP3126080A1 EP3126080A1 EP15713761.3A EP15713761A EP3126080A1 EP 3126080 A1 EP3126080 A1 EP 3126080A1 EP 15713761 A EP15713761 A EP 15713761A EP 3126080 A1 EP3126080 A1 EP 3126080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- drill
- connection
- material processing
- curved
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/043—Accessories for spindle drives
- B23Q5/045—Angle drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/18—Ceramic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/07—Gears
-
- 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
- B23B2270/02—Use of a particular power source
- B23B2270/022—Electricity
-
- 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
- B23B2270/02—Use of a particular power source
- B23B2270/025—Hydraulics
Definitions
- the present invention relates to a special drill with which it is possible to make curved holes.
- Curved holes are well known in the macroscopic, such as in the development of fossil fuels.
- There are special drilling systems (“Directional Drilling”) in which the direction of the drill head can be steered 1. This allows, for example, an oil reservoir at a depth of 10 km from the side to pierce and exploit.
- the flexible shaft b is guided in a steel sheet tube a, which is bent after the curve to be drilled.
- the shaft b is soldered with one end into the drill bit by a nut thread catching c, while the other end is easily pushed through a brass sleeve.
- the drill chuck c loosely runs in a small brass bushing which reinforces the free end of the pipe.
- the other end of the tube is mounted in a sleeve which is carried by a booklet.
- the brass sleeve d rotates easily in the pipe end, which sits in the sleeve.
- the sleeve d is cut longitudinally so that the ends emerging from the tube a somewhat spring.
- the attachment of the shaft b in the sleeve d is done by attaching the two-piece drive roller g by the same the resilient. Ends of the sleeve d is compressed on the shaft b.
- the cord of an ordinary rotary arc such as is needed for small spindles, is inserted in the track of the roller g and the drill bit is pressed steadily against the drilling material while working back and forth with the bow.
- the tube a leads the drill as the hole progresses and thus one can also spiral holes u.
- Drill if the pipe a has received the appropriate form.
- a tool for drilling curved holes wherein a flexible shaft lies in a curved guide tube, which corresponds in its curvature to the curvature of the borehole, which connects the drive with the drill head.
- the use of this tool is particularly in the field of surgery.
- US Pat. No. 4,265,231 A discloses a drilling tool for producing a curved drilling channel, comprising a drill head, a curved, hollow cylindrical shaft with a proximal end and a distal end, and a shaft accommodated in the shaft with a proximal coupling element to the Connecting the shaft with a drive and with a distal coupling element for connecting the shaft to the drill head.
- WO 2011 113078 discloses a tool for drilling curved boreholes, having a boring head connected to one end of a flexible shaft and a guide tube, which is bent correspondingly to the curvature of the borehole and surrounding the flexible shaft, with a bearing at the distal end Bearing of the drill head, and arranged at the other end of the flexible shaft means for connection to a drive.
- a rinsing device is provided, via which rinsing liquid can be conveyed through the guide tube to the drill head. In this way, the removed material can be removed and the drill head cooled and lubricated.
- Flexible shafts have the disadvantage that they can transmit only low torques, which are particularly dependent on the diameter of the shaft and the direction of rotation. In the range of diameters of the flexible shaft below 2 mm, there are currently no suppliers. In addition, the maximum speeds are limited upwards, for example, with a diameter of 3 mm maximum 25000 RPM.
- the invention has for its object to provide a device, a method and a computer program for drilling curved holes, in particular for the transmission of high torques and high speeds at small borehole diameters.
- the drills should be used on CNC machines.
- the application should also be possible in the area of difficult-to-process materials, such as CoCr alloys, silicate ceramics (lithium silicate, lithium disilicate, etc.) or oxide ceramics.
- the drive of the material processing area which is in particular formed by a drill head, by gear-like drive parts (eg axes with Bevel gear etc.) or according to claim 2 by a flexible shaft or according to claim 3 by means of fluid drive or compressed air drive;
- the diameter of the rigid curved shaft portion of the device, in particular of the drill has a Druehmesser, which may also be less than 3mm;
- a computer program is provided, so that the device, in particular the drill, can be used on a CNC machine.
- inlet and outlet channels for cabbage and drill cuttings are available.
- the curved drill is primarily characterized in that the curvature of the drill exactly corresponds to a segment of a circular arc.
- the drill / grinder head can be designed either with defined cutting geometries or with an undefined grinder geometry (for example diamond coating).
- the geometry of the drill grinder head is hemispherical.
- the drill / grinder head is replaceable. This interchangeability can be accomplished for example by a threaded connection with the distal drive part.
- channels for the supply of cooling lubricant and / or the removal of chips or grinding dust can be integrated into the drill.
- the channels for the supply of cooling lubricant can either be closed within the drill shank, or be designed as semi-open channels on the outer surface of the drill shank.
- the drill at the drive-near end shows a geometric design in the sense of an anti-rotation geometry, which attaches to the drive part and prevents co-rotation of the curved drill.
- a grinding or drilling program which makes it possible to make the curved bore by means of a CNC machine.
- the program calculates the feed and the rotation paths and provides an NC file which, during the drilling process, determines the feeds in the linear axes (X, Y and Z axes) and simultaneously simultaneously the rotations of the axes of rotation (A or B -Axis) controls.
- the linear and rotary axes are controlled in the reverse order. In principle, it is possible to actuate the drill bit both in left-hand and clockwise directions.
- the curved drill has the following features:
- the curvature of the drill forms a circle segment with the smaller inner radius Rl and the larger outer radius R2.
- the diameter D drill shank of the drill shank results from:
- the circle segments for the smaller inner radius Rl and the larger radius R2 originate from the same circle center.
- the diameter of the drill tip (D drill tip ) must be greater than the diameter of the drill shank (D drill shank ), so that there is no jamming of the curved drill during the drilling process.
- the curved can be provided with cooling channels, so that passes through these cooling lubricant to the drill / Fräserspitze and thus overheating of the drill / scraper head and the workpiece can be prevented.
- the curved drill bit can be provided with drainage channels so that it can be used to remove the drill cuttings / debris.
- the device it is possible not to operate the device by means of flexible shaft or gear-like drive, but with the aid of compressed air or fluid pressure.
- the supply of compressed air / hydraulic fluid can be done by the curved shaft portion.
- a turbine wheel At the distal end of the shank portion, in particular the drill shank, is located within the shank portion of a turbine wheel, which is rotatably mounted and converts the applied pressure (air / liquid) into kinetic energy.
- the turbine wheel can be designed, for example, as a paddle wheel.
- the turbine wheel is connected to the material processing section, in particular the drill / grinder head, so that the kinetic drive energy is transferred from the turbine wheel to the drill / shaver head.
- the cheapest is the power transmission directly without intermediate gear. But it is also an upper or reduction by a transmission possible.
- the storage of the turbine wheel can be done, for example air bearing. There are also plain bearings, needle roller bearings or ball bearings with steel balls possible. For very high speeds ceramic ball bearings are ideally
- the propellant / propellant can either be returned within the drill shank or escape at the drill / grinder head and serve to cool the drill / grinder head and workpiece.
- the drive system can form a self-contained circuit, beipsieliki in the sense of an oil pressure drive.
- a turbine wheel located at the distal end of the drill shank within the drill shank a turbine wheel, which is rotatably mounted and converts the applied oil pressure (air / liquid) into kinetic energy.
- the pressure is generated within the drill shank by an impeller which is moved by a drive axle and driven by a system / motor external to the drill shank.
- Fig. 1 shows the lateral section through a curved drill with gear drive
- Fig. 2 shows the lateral section through a curved drill with drive by means of flexible shaft
- Fig. 3 shows the lateral section through a curved drill
- Drawing No. 1 shows that the lateral section through a curved drill with gear drive.
- the internal gearbox is shown, which consists of the following parts: shaft (4) with bevel gear at one end and connection geometry (5) for connection to a clamping system (here HSK Polygonspannsy system) and the drive spindle (12), shaft with bilateral Bevel gear (6), gearbox intermediate piece (7) with negative bevel gear teeth on both sides, one end of the gearbox
- the drill / grinder head (9) is shown in the drawing no. 1 by way of example as a diamond grinder with hemisphere geometry
- the drill / grinder head (9) is shown replaceable in the drawing, which is screwed onto the Getriebeend published.
- the tool clamping device (11) here exemplified polygon clamping system with HSK receptacle
- Drawing no. 2 is shown in the drawing no. 1 by way of example as a diamond grinder with hemisphere geometry
- the drill / grinder head (9) is shown replaceable in the drawing, which is screwed onto the Getriebeend published.
- the tool clamping device (11) here exemplified polygon clamping system with HSK recept
- Drawing No. 2 shows the lateral section through a curved drill with drive by means of flexible shaft (13).
- flexible shaft which is constructed of the following parts: flexible shaft (13) with bearings at the drive-near end (14) and connection geometry (5) for connection to a clamping system (here HSK polygon clamping system) and the drive spindle (12) , distal bearing of the flexible shaft (15) at the end facing the drill / grinder head (9).
- the drill / grinder head (9) is shown in the drawing no. 1 by way of example as a diamond grinding with hemisphere geometry.
- the drill / SchIeiferkopf (9) is shown replaceable in the drawing, wherein this is screwed onto the Getriebeend Culture (8).
- the tool clamping device (11) here exemplified polygon clamping system with HSK recording
- Drawing No. 3 shows the lateral section through a curved drill with compressed air / hydraulic fluid drive.
- the drill / grinder head (9) is shown in the drawing no. 3 by way of example as a diamond grinding with hemisphere geometry.
- the drill / grinder head (9) is shown replaceable in the drawing, wherein this is screwed onto the connecting piece (19) to the turbine wheel (16). Furthermore, the supply of compressed air / pressure fluid (17) and the return of the compressed air / hydraulic fluid (18) is shown.
- Drawing No.4 shows the supply of compressed air / pressure fluid (17) and the return of the compressed air / hydraulic fluid (18) is shown.
- Drawing No. 4 shows the lateral section through a curved drill with self-contained hydraulic fluid drive.
- the drill Z grinding head (9) is exemplified in the drawing No. 4 as a diamond grinding wheel having a hemispherical geometry.
- the drill Z-grinding head (9) is shown replaceable in the drawing, this is screwed onto the connecting piece (19) to the turbine wheel (16). Furthermore, the supply of the hydraulic fluid (17) and the return of the hydraulic fluid (18) is shown.
- the impeller (20) is driven by the drive shaft (21).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014004901.9A DE102014004901A1 (de) | 2014-04-03 | 2014-04-03 | Vorrichtung, Verfahren und Computerprogramm zum Bohren gekrümmter Löcher |
| PCT/EP2015/057284 WO2015150509A1 (de) | 2014-04-03 | 2015-04-02 | Vorrichtungen zum bohren gekrümmter löcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3126080A1 true EP3126080A1 (de) | 2017-02-08 |
Family
ID=52785102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15713761.3A Withdrawn EP3126080A1 (de) | 2014-04-03 | 2015-04-02 | Vorrichtungen zum bohren gekrümmter löcher |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3126080A1 (de) |
| DE (1) | DE102014004901A1 (de) |
| WO (1) | WO2015150509A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623399B (zh) * | 2019-02-14 | 2020-04-03 | 上海通成企业发展有限公司 | 一种弧形通孔钻孔设备 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2414637A (en) * | 1944-05-17 | 1947-01-21 | Aircraft Tools Inc | Universal drill support |
| US4265231A (en) | 1979-04-30 | 1981-05-05 | Scheller Jr Arnold D | Curved drill attachment for bone drilling uses |
| US4541423A (en) | 1983-01-17 | 1985-09-17 | Barber Forest C | Drilling a curved hole |
| JPS6248437A (ja) * | 1985-08-28 | 1987-03-03 | Dai Showa Seiki Kk | 回転工具取り付け用アタツチメント |
| US5017057A (en) | 1989-09-05 | 1991-05-21 | Ronald J. Harms | Apparatus for drilling a circularly curved bore |
| US8459373B2 (en) * | 2010-01-08 | 2013-06-11 | Russell Reynolds | Modified power tool |
| AT508891B1 (de) | 2010-03-16 | 2011-05-15 | Univ Wien Tech | Werkzeug zum bohren gekrümmter bohrlöcher |
-
2014
- 2014-04-03 DE DE102014004901.9A patent/DE102014004901A1/de not_active Ceased
-
2015
- 2015-04-02 WO PCT/EP2015/057284 patent/WO2015150509A1/de not_active Ceased
- 2015-04-02 EP EP15713761.3A patent/EP3126080A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015150509A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015150509A1 (de) | 2015-10-08 |
| DE102014004901A1 (de) | 2015-10-22 |
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Extension state: BA ME |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
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