WO2006024287A2 - Tieflochbohrer - Google Patents
Tieflochbohrer Download PDFInfo
- Publication number
- WO2006024287A2 WO2006024287A2 PCT/DE2005/001533 DE2005001533W WO2006024287A2 WO 2006024287 A2 WO2006024287 A2 WO 2006024287A2 DE 2005001533 W DE2005001533 W DE 2005001533W WO 2006024287 A2 WO2006024287 A2 WO 2006024287A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drill
- deep hole
- head
- drill head
- shank
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/04—Drills for trepanning
- B23B51/0486—Drills for trepanning with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
- B23B51/126—Tool elongating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2240/00—Details of connections of tools or workpieces
- B23B2240/11—Soldered connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/02—Connections between shanks and removable cutting heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
- B23B51/063—Deep hole drills, e.g. ejector drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
- B23B51/063—Deep hole drills, e.g. ejector drills
- B23B51/066—Gun drills
Definitions
- the present invention relates to a deep hole drill according to the preamble of claim 1.
- Deep hole drills are known in different configurations. Deep hole drills e.g. For the machining of crankshaft steel, specially adapted groove geometries provide optimum chip transport and maximum cooling channel cross sections, which support a minimum quantity lubrication.
- the flutes can for example be spiral or straight.
- the drill bit has one or more e.g. soldered drill bits for the actual cutting function, which consists of a cutting material that is harder than the workpiece material.
- the drill bits may also be on an insert or cutting insert of the drill bit.
- the object of the invention is to expand the scope of a deep hole drill, especially for a Deep hole drills with a diameter in the range between about 1 and about 60 mm and a total length of up to about 3000 mm.
- the invention is based on a deep hole drill with a drill head and a drill shank and a detachable connection formed between the drill head and the drill shank for attaching and removing the drill head from the drill shank.
- An essential aspect of the invention is that between the drill head and the drill shank, an intermediate piece is provided, on which on the drill head side facing the releasable connection between the intermediate piece and the drill head is formed and the intermediate piece on the side facing the drill shank with connected to the drill shank.
- the tool costs can be significantly reduced because can be done over the entire life of a deep hole drill with a drill shank that is exposed to no significant wear, and the drill head when worn easily reworked or completely wear or change the Bohrerkopf type can be exchanged.
- the cost of shipping or storage can be reduced because comparatively lower weight or a smaller footprint of the tool or a tool set with a shank and a plurality of drill heads is possible.
- the deep hole drill according to the invention can be used particularly advantageously for a usable drilling depth of greater than ten times the diameter of the drill.
- the drill diameter can be in particular in the range between 1 mm and up to over 60 mm, wherein the total length of the deep hole drill can be up to about 3000 mm.
- the intermediate piece between the drill shaft and the drill head it is possible that in particular a plurality of different configurations of detachable connections between the drill shaft and the drill head can be set up reliably and stably.
- the intermediate piece can be designed so that even with relatively high mechanical or thermal requirements of the deep hole drill whose function is not affected compared with drills without spacer.
- the proposed deep hole drill can also meet high requirements, for example if bores with a diameter of 1 mm to 20 mm with e.g. a ratio of drill length to diameter of up to 200: 1 must be drilled in a single case up to a stroke length of 100 times the diameter in one go.
- Such tools are used for example in engine and shipbuilding, in particular in the production of fuel injection systems. In this case, even bores with very small diameters, e.g. in the range of 1 mm and in relation to very large bore lengths can be made.
- the intermediate piece is designed as a subsequently attached to the drill shaft fixed item.
- the deep hole drill can be made particularly simple and flexible according to the desired drill configuration, e.g. with prefabricated spacers, which may vary in length, diameter, material or type of releasable connection. For this purpose, only the directed to the respective drill shaft side of the intermediate piece must be matched appropriately to the drill shaft.
- the intermediate piece consists of solid carbide.
- Solid carbide is characterized in particular by its high hardness or by its high resistance values in terms of mechanical or thermal loads, which relatively longer service life can be achieved. Any occurring wear of the intermediate piece in the region of the detachable connection can be due to the hard Materials are almost avoided even with frequent changes of the drill head.
- the intermediate piece can in principle be soldered, welded or glued to the drill shaft, for example.
- the releasable connection comprises a dovetail joint, which is secured with a screw against displacement of the drill head and drill shank transversely to the longitudinal axis of the deep hole drill.
- the detachable connection can be set up particularly effectively and reliably by a dovetail connection with screw locking and can be manufactured comparatively easily.
- a relative movement of the drill head and drill shank in the longitudinal direction of the deep hole drill is completely or at least almost completely excluded with the dovetail joint.
- the shape and thus the space requirement or the stability for the dovetail joint can be carried out variably in a relatively wide range.
- the dovetail connection may comprise a tapered outwardly flared spigot portion which is unitarily formed with the drill head which engages a corresponding mating mating portion on the drill shaft.
- the dovetail portion and the corresponding counterpart portion may also be formed on the drill head on the drill shank.
- the dovetail connection comprises a dovetail portion which cooperates in the sliding seat with a counter portion is particularly advantageous.
- the drill head can be attached or removed from the side transversely to the longitudinal axis of the drill shank by inserting or pushing it out.
- this usually also has opposite planar surfaces on the drill head and the drill shank, for example on the underside of the drill head or on the upper side of the drill shank, which can further increase the exact positioning and guidance of the mutually displaceable parts and supports an effective force or torque transmission between the parts.
- the dovetail connection can also be designed so that the nested sections complement each other completely to solid material, which are excluded by material gaps possibly weakened areas in the connection region of the drill.
- the drill head made of solid carbide.
- a particularly durable and dimensionally stable deep hole drilling tool can be provided.
- the drill shank is made of steel. This can be a comparatively cheaper and stable drill shank can be realized.
- a drill shank made of steel can ensure the transmission of the required torque over its length from the clamping point to the drill head and can also be machined with good shaping. This is advantageous for example in the introduction of flutes or for the soldering in the clamping section or with an optional intermediate piece.
- the drill shank is hollow. This can be particularly effective and easy to provide a cooling channel in the drill shaft. Also, a chip removal can be realized particularly easily. For example, when using a hollow tubular steel piece to form at least one straight flute, which is often e.g. single-lip deep hole drills are desired, they are comparatively easily made by deformation, whereby by impressing an outer portion of the steel pipe a cross-section with e.g. kidney-shaped outer contour is obtained. It can also be formed several flutes.
- the proposed deep hole drill for example a single-lip drill, is in principle suitable for removing the chips by means of a supplied lubricant via the at least one flute, with straight-grooved drilling tools being supported by guide rails in the drill hole over its circumference.
- the drill head has, for example, for a cutting plate and two guide rails seats with threaded holes through which the cutting plate and the guide rails are screwed to the drill head.
- the same guide bevels are either used or exchanged for the entire nominal diameter range, as described in the company documents "Deep Hole Drilling Tools Type 01", no. 01-0501-01 of Botek "Botek refzisionsbohrtechnik GmbH and” Tieflochbohrer Komplett-Programm "no. 110703 / 040-1-15 of Guhring company.
- the drill head is multi-part.
- the drill head may e.g. for manufacturing or application reasons, consist of several parts, which also a kind of additional intermediate piece between the drill bit and the spacer can be formed.
- the parts of the drill head for example, be firmly miteinender connected, in particular soldered, welded or glued.
- at least one connection of the multi-part drill head can be designed as a detachable connection.
- the at least one detachable connection can be realized in different ways, e.g. as a dovetail connection with screw lock, as a screw, plug, shrink or bayonet connection or as another suitable non-positive or positive connection.
- Figure 1 shows a highly schematically illustrated first embodiment of a deep hole drill interrupted and in side view
- Figure 2 shows another embodiment of the invention Tieflochbohrers, also shown broken and in side view;
- Figure 3a is a front part of a
- Figure 3b shows the front part shown in Figure 3a, shown partially in section
- Figure 4 shows an embodiment of the deep hole drill according to the invention in a perspective view.
- a deep hole drill 1 with a replaceable drill head 2 and a shaft 3, shown in an interrupted manner, is shown in highly schematic form.
- a clamping element 4 is provided at a rear end of the deep hole drill 1.
- the drill head 2 can be designed in many different ways, in particular according to a single- or two-edged tool.
- the cutting edges (not shown in detail) of the drill head 2 are made of a cutting material which is harder than the workpiece material and are soldered or are located, for example, on an insert or a cutting insert, which are screwed onto the drill head 2.
- the drill head 2 can in principle, e.g. be formed as a single-lip or multi-lip deep hole drill or straight grooved, spiralized or partially spiraled chip flute.
- the drill head 2 may also be multi-part, e.g. from each other soldered different parts, in particular at least partially made of solid carbide.
- the deep hole drill 1 can be designed, for example, with specially adapted groove geometries for optimum chip removal from deep bores and a maximum cooling channel cross section for a minimum quantity lubrication (MQL).
- MQL minimum quantity lubrication
- Such tools are shown, for example, in the company publication "Spiralized solid carbide deep hole drills", No. 115 ' 958/0454-VI-15 of Guhring OHG, which are used, for example, for processing crankshaft steel.
- the deep hole drill 1 has an interface area 5 between the drill head 2 and the shaft 3, in which a detachable connection between the drill head 2 and the shaft 3 is established.
- a front portion 5a of the interface portion 5 is fixedly connected to the drill head 1 by a non-detachable connection.
- a rear portion 5b of the interface portion 5 which is fixedly connected to the shaft 3.
- the releasable connection is realized, for example in the form of a dovetail joint 6, which is shown in more detail in Figures 3a and 3b.
- the interface region 5 may comprise a respective releasable adhesion, form-fitting, screw, shrink or adhesive connection or may have a conical connection, in particular between about 0 degrees and 15 degrees, if necessary with flat contact. It is also an interface with bayonet connection possible or conceivable with a conical or cylindrical clamping bolt or the interface consists of a combination of cone and tightening thread, with and without face contact.
- the interface region 5 can lie 1/3 relative to the tool cutting edge along the tool axis.
- FIG. 2 shows a further embodiment of the deep hole drill 1 according to the invention, in which the interface region 7 is set up in the drill head 2.
- Interface region 7 designed by a secure connection with the drill head 2 so that the drill head 2 can be separated from the shaft 3.
- a rear portion 7b of the interface portion 7 is fixedly connected to the shaft 3 by a non-detachable connection, e.g. soldered.
- the deep hole drill 1 shown in perspective in Figure 4 is e.g. formed according to the schematically illustrated embodiments according to Figure 1 and Figure 2 and has a drill head 2, a shaft 3 and a clamping element 4.
- the shaft 3 and the drill head 2 are soldered to each other at a joining seam 8, for example.
- the shaft 3 may be inserted into a recess of the clamping element 4 and there also soldered to the clamping element 4.
- the clamping element 4 can be provided in the form of a clamping sleeve.
- the deep hole drill 1 has the front end of the drill head 2 via an outlet opening 9a of an internal cooling channel 9, which extends through the tool or through the deep hole drill 1 over its entire length.
- the deep hole drill 1 according to FIG. 4 is designed as a single-lip drill with a straight grooved flute 10.
- Figure 3a to 3c shows a highly schematic detail of a deep hole drill 1 according to the invention with the dovetail joint 6 between the drill head 2 and an intermediate piece 11.
- the intermediate piece 11 consists for example of solid carbide and has at its rear end obliquely to the longitudinal axis S of the drill head 2 obliquely Contact surfaces IIa and IIb, which are designed in particular for soldering to a shank region of the deep hole drill 1. Between the outwardly widening contact surfaces IIa and IIb an angle CK 1 of approx. 90 degrees is clamped in the example shown.
- the diameter D of the intermediate piece 11 here corresponds to the diameter D of the drill head 2.
- the in the side view according to Figure 3a, the outside resulting angle o ⁇ 2 of the drill bit contour can be, for example, about 270 degrees.
- the dovetail connection 6 comprises a pin section 2 a formed uniformly on the drill head 2 at its rear end, which forms, for example, by outer surfaces 2 b which flare outward conically and a flat base surface 2 c.
- the outer surfaces 2b are in particular compared to the longitudinal axis S of the drill head 2 similar to this inclined, here for example by about 25 degrees.
- the base 2c may also have another suitable contour or be formed with inclined surfaces.
- the length I 2 from a rear end point B of the intermediate piece 11 parallel to the longitudinal axis S to a central region of the Spigot portion 2a corresponds approximately to half of the length dimension I 1 between the rear end point B parallel to the longitudinal axis S up to a drill tip A.
- the dovetail connection 6 is fixed and secured by a screw connection 12.
- a grub screw 13 engages by a perpendicular to the longitudinal axis S extending bore 14 from the outside laterally through the intermediate piece 11 into the journal portion 2a, wherein in the bore 14 an internal thread is formed, which cooperates with an external thread of the grub screw 13.
- the screw 12 with the grub screw 13 and the bore 14 is in particular tuned so that the dovetail joint 6 can be set in a precisely aligned position of drill head 2 and spacer 11, so that in particular both parts are aligned in exact alignment or the outsides of Drill head 2 and spacer 11 are aligned.
- the drill head 2 is secured against slipping relative to the intermediate piece 11 transversely to the longitudinal axis S in addition to the exact alignment of drill head 2 and spacer 11.
- the drill head 2 is inserted in the sliding seat with a relatively narrow tolerance in a corresponding counter portion of the intermediate piece, wherein the counter portion of the intermediate piece 11 is exactly matched to the outer contour of the pin portion 2a.
- the drill head 2 is shown in a plan view from the front from the direction P according to FIG. 3 a, wherein a flute 15 is formed with an angle ⁇ 1 of approximately 120 degrees in the circumferential direction to the longitudinal axis S.
- openings 15 and 16 are provided for the supply of, for example, cooling lubricant during drilling on open surfaces 15 on the drill head. So far, deep hole drills from a locally limited to the drill bit drill head and extending over the length of the drill shank of the same material or different materials are assembled. In this case, the at least one drill bit can be formed directly on the drill head, which is fastened by soldering, as shown in the prospectus EB100, No. 114980/03123-XI-15 of Guhring.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005002740T DE112005002740A5 (de) | 2004-09-01 | 2005-09-01 | Tieflochbohrer |
DE202005016055U DE202005016055U1 (de) | 2005-09-01 | 2005-09-01 | Tieflochbohrer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004013616.3 | 2004-09-01 | ||
DE202004013616U DE202004013616U1 (de) | 2004-09-01 | 2004-09-01 | Tieflochbohrer mit wechselbarem Bohrkopf |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006024287A2 true WO2006024287A2 (de) | 2006-03-09 |
WO2006024287A3 WO2006024287A3 (de) | 2006-06-29 |
Family
ID=35385511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001533 WO2006024287A2 (de) | 2004-09-01 | 2005-09-01 | Tieflochbohrer |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE202004013616U1 (de) |
WO (1) | WO2006024287A2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2888066B1 (de) * | 2012-08-24 | 2021-02-17 | botek Präzisionsbohrtechnik GmbH | Einlippentieflochbohrer |
CN113103385A (zh) * | 2019-12-25 | 2021-07-13 | 三星钻石工业株式会社 | 接合物 |
USD1009108S1 (en) | 2020-09-21 | 2023-12-26 | Kyocera Unimerco Tooling A/S | Drill |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011081506B4 (de) | 2011-08-24 | 2024-02-22 | Gühring KG | Rundlaufendes Zerspanungswerkzeug |
DE102014110021A1 (de) * | 2014-07-16 | 2016-01-21 | Botek Präzisionsbohrtechnik Gmbh | Verfahren zum Neubestücken eines Einlippenbohrers und Einlippenbohrer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20219753U1 (de) * | 2002-12-19 | 2004-04-22 | Gühring, Jörg, Dr. | Tieflochbohrer |
EP1419839A1 (de) * | 2002-11-15 | 2004-05-19 | UNITAC, Incorporated | Tiefbohrwerkzeug |
-
2004
- 2004-09-01 DE DE202004013616U patent/DE202004013616U1/de not_active Expired - Lifetime
-
2005
- 2005-09-01 WO PCT/DE2005/001533 patent/WO2006024287A2/de active Application Filing
- 2005-09-01 DE DE112005002740T patent/DE112005002740A5/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1419839A1 (de) * | 2002-11-15 | 2004-05-19 | UNITAC, Incorporated | Tiefbohrwerkzeug |
DE20219753U1 (de) * | 2002-12-19 | 2004-04-22 | Gühring, Jörg, Dr. | Tieflochbohrer |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2888066B1 (de) * | 2012-08-24 | 2021-02-17 | botek Präzisionsbohrtechnik GmbH | Einlippentieflochbohrer |
CN113103385A (zh) * | 2019-12-25 | 2021-07-13 | 三星钻石工业株式会社 | 接合物 |
CN113103385B (zh) * | 2019-12-25 | 2024-06-07 | 三星钻石工业株式会社 | 接合物 |
USD1009108S1 (en) | 2020-09-21 | 2023-12-26 | Kyocera Unimerco Tooling A/S | Drill |
Also Published As
Publication number | Publication date |
---|---|
WO2006024287A3 (de) | 2006-06-29 |
DE202004013616U1 (de) | 2006-01-12 |
DE112005002740A5 (de) | 2007-08-09 |
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