EP1353765A1 - Bohrkopf - Google Patents
BohrkopfInfo
- Publication number
- EP1353765A1 EP1353765A1 EP01997366A EP01997366A EP1353765A1 EP 1353765 A1 EP1353765 A1 EP 1353765A1 EP 01997366 A EP01997366 A EP 01997366A EP 01997366 A EP01997366 A EP 01997366A EP 1353765 A1 EP1353765 A1 EP 1353765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- drilling head
- head according
- drill head
- ribs
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 71
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
- E03F9/005—Apparatus for simultaneously pushing and rotating a cleaning device carried by the leading end of a cable or an assembly of rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
Definitions
- the invention relates to a drill head, in particular for insertion into pipelines, with a rear connection piece and a front, larger-diameter cutting body which has cutting ribs extending in the driving direction, the cutting ribs being convexly curved and having a cutting edge on both sides at their radial ends in the circumferential direction.
- Drilling heads of this type are used, for example, for drilling deposits in pipelines.
- the drill heads are rotated by a spiral, a shaft or, alternatively, a flush-driven drill motor and advanced in the axial direction.
- Such a drill head is known from DE 2806725 C2.
- the known drill head has cross slots incorporated in the base body of the cutting body, into each of which two blades with drilling blades are inserted.
- the elongated shape has a disadvantage, as it only allows limited maneuverability.
- the drill head is only slightly guided over the edges of the four drill blades, which run parallel to the direction of advance, so that, in the case of strong Nerkrus, the drill head can be held firmly and the inner wall of the pipe may be damaged at high driving forces.
- BEST ⁇ TIGU ⁇ GSKOPIE DE-PS 940460 discloses a method and a device for cleaning straight pipe sections of water pipelines with a scraper carried by a rigid rod, which is inserted into the pipeline and is continuously advanced with rotation when water flows against it. Due to the rigid norbar, the well-known scraper cannot negotiate curves. Another disadvantage is the low guidance of the scraper head over a scraper blade, which protrudes on both sides over the circumference of the scraper body and is always in contact with the pipe wall at two points of contact.
- FR 2 303 650 AI Another state of the art is FR 2 303 650 AI, in which a twist drill with a spherical head and a shaft is described, the spherical head having both cutting edges and a centering tip.
- the protected twist drill however, has the disadvantage of an elongated, inflexible shape, so that it is not possible to use the pipe with curved drill lines.
- a drill head which also has a rear connection piece and a front larger diameter cutting body, as best shown in FIG 7 is removed.
- the cutting body has cutting ribs which extend in the direction of advance and which, if only slightly, are convex.
- an undercut of the cutting edges at their radial end is disclosed.
- the drill head described above is also not suitable for cleaning the pipe wall, in particular curved pipes.
- a boring head in which the cutting body has a conical boring head tip which is surrounded by back-shaped tips of the cutting ribs which are set back in a longitudinal axis Y. Due to the convexly rounded cutting ribs, the pipe wall is significantly less stressed than with existing systems, since the drill head causes increased propulsive forces, e.g. can be positioned independently by bending the pipeline and / or deposits that reduce the pipe diameter and moved in the direction of advance with a pendulum head movement, fixed by the conical drill head tip. This avoids an increased surface pressure due to tilting of the drill head on the inner pipe wall.
- the cutting edges on both sides of the cutting ribs enable effective use regardless of the direction of rotation. The undercut of the cutting edges enables even solid deposits to be loosened, since the deposits are subjected to tensile stress. The tensile strength, especially mineral deposits, is many times lower than the compressive or shear strength.
- the drill head begins to tilt to one side as the pressing force increases, causing the tips of the cutting ribs to engage and remove the deposit.
- the insulated tips of the cutting ribs are inverted and thus reduce the risk of pipe damage.
- the drill head advantageously has cutting ribs tapering in the direction of advance.
- the cutting body has a conical drill head tip.
- the conical drill head tip can protrude from the tips of the cutting ribs. This has the advantage that the boring head is fixed over the conical boring head tip when it hits a deposit.
- a favorable geometry of the conical drill head tip is achieved with a flank angle of 40-50 °, in particular 45 °.
- the cutting ribs are advantageously arranged equidistantly in the circumferential direction. This ensures smooth running even at high speeds.
- a recess with a round cross section is arranged between the cutting ribs.
- This cross-sectional geometry of the recess represents one possibility of designing the cutting ribs with an undercut.
- the connecting piece and the cutting body are formed in one piece.
- the massive design of the drill head reduces the vibration in the cutting ribs and increases the service life.
- the recess is milled into the cutting body. This enables inexpensive mechanical mass production with small manufacturing tolerances.
- the axes of the recesses advantageously meet at an intersection in front of the drill head.
- the axes of the recesses converging in the direction of advance ensure that the cuttings are transported away cheaply, which increases drilling progress and reduces wear on the drill head.
- the total length L of the drill head is in relation to the outside diameter D ⁇ . 1.2.
- the compact design with an outer diameter that corresponds approximately to the length of the drill head favors the ability of the drill head to negotiate curves.
- a preferred embodiment has a T-shaped recess in the cylindrical connector in the longitudinal axis of the drill head.
- two holes can be formed in the radial direction in the transition from the cylindrical connector to the cutting body.
- Figure 1 is a side view of the drill head
- FIG 2 is a plan view of the drill head shown in Figure 1 against the direction of advance.
- the drill head is shown in side view.
- the drill head 1 is composed of the connector 2 and the cutting body 3.
- the connector 2 there is a receptacle 10 for mounting the drill head 1 on a spiral, shaft or a drill motor (not shown).
- the attached drill head 1 can then be fixed by means of a bolt pushed through the bore 11, which is not shown.
- the connecting piece 2 merges in one piece into the cutting body 3, which has a total of six cutting ribs 4, between which there are recesses 8.
- the recesses 8 have a round shape in cross section. Due to the rounded cross-section of the recesses 8, an undercut 8a occurs in the radial area of the cutting ribs 4.
- the axes 9 of the recesses 8 run towards one another in the direction of the drill head tips 7 and meet at an intersection (not shown) located in the direction of advance V in front of the tip.
- the cutting ribs 4 have a convex shape and give the cutting body 3 a spherical shape. In addition to the spherical shape, oval shapes are also possible, which is determined by the curvature of the cutting ribs 4. Overall, due to the convex design of the cutting ribs, the drill head has a larger diameter than the connection piece.
- Each cutting rib 4 extends in the longitudinal direction of the drill head 1, i.e. in the direction of advance, and tapers both in the direction of connection piece 2 and in the direction of drill head tip 7.
- the drill head tip 7 is surrounded in a crown shape by the tips 6 of the outgoing cutting ribs 4, which are set back in the longitudinal axis Y.
- the tips 6 backed under the flank angle can be seen, which enable inverted cutting of the drill head 1.
- the arrangement, shape and orientation of the cutting edge 5 and recesses 8 enable the inside walls of the pipe to be cleaned gently, the dissolved material being discharged to the rear through the recesses 8.
- FIG. 2 shows the drill head 1 in a top view, so that the round cross section of the recesses 8 and the undercuts 8a of the cutting edges 5 can be seen.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
- Drilling And Boring (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10057877 | 2000-11-22 | ||
| DE10057877A DE10057877C2 (de) | 2000-11-22 | 2000-11-22 | Bohrkopf |
| PCT/EP2001/013612 WO2002042014A1 (de) | 2000-11-22 | 2001-11-22 | Bohrkopf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1353765A1 true EP1353765A1 (de) | 2003-10-22 |
| EP1353765B1 EP1353765B1 (de) | 2004-11-03 |
Family
ID=7664204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01997366A Expired - Lifetime EP1353765B1 (de) | 2000-11-22 | 2001-11-22 | Bohrkopf |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6932170B2 (de) |
| EP (1) | EP1353765B1 (de) |
| AT (1) | ATE281250T1 (de) |
| DE (2) | DE10057877C2 (de) |
| WO (1) | WO2002042014A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH702888B1 (de) | 2010-03-17 | 2014-12-15 | Josef Haas | Schneidkopf insbesondere zum Reinigen von Rohrleitungen. |
| ITCO20120044A1 (it) * | 2012-09-20 | 2014-03-21 | Nuovo Pignone Srl | Fresa e metodo d'uso |
| CN104088359B (zh) * | 2014-06-07 | 2015-12-09 | 冯政 | 排污管道清淤钻的制造和使用方法 |
| DE202019000798U1 (de) | 2019-02-19 | 2019-03-14 | Stefan Pfister | Halbkugelfräser für Rohrreinigungsspiralen |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL29183C (de) * | ||||
| US616118A (en) * | 1898-12-20 | Ernest kuhne | ||
| DE89038C (de) | 1895-03-09 | 1896-10-24 | Gebr Commichau | Rohrreiniger |
| FR357403A (fr) | 1905-08-12 | 1905-12-27 | Tiefbohr Maschinen & Werkzeuge | Fleuret double excentré pour forages |
| US946060A (en) * | 1908-10-10 | 1910-01-11 | David W Looker | Post-hole auger. |
| US1116154A (en) * | 1913-03-26 | 1914-11-03 | William G Stowers | Post-hole digger. |
| US1296078A (en) * | 1918-11-20 | 1919-03-04 | Arthur L Hawkesworth | Drill. |
| US1387733A (en) * | 1921-02-15 | 1921-08-16 | Penelton G Midgett | Well-drilling bit |
| US1746423A (en) * | 1925-09-30 | 1930-02-11 | Hartman William Walter | Well-drilling bit |
| GB646872A (en) * | 1947-07-12 | 1950-11-29 | Timken Roller Bearing Co | Improvements in or relating to rotary percussion drills and processes of making the same |
| GB634743A (en) * | 1947-07-28 | 1950-03-29 | Murex Ltd | Improvements in and relating to drills |
| GB644145A (en) * | 1947-12-09 | 1950-10-04 | Atlas Diesel Ab | Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edges |
| DE940460C (de) * | 1949-11-17 | 1956-03-15 | Willy Uhlig | Verfahren und Vorrichtung zum Reinigen von Wasserleitungsrohren |
| DE1634487A1 (de) * | 1966-12-06 | 1970-10-01 | Masch Und Bohrgeraete Fabrik | Bohrvorrichtung zur Herstellung von Schlitzloechern |
| US3557887A (en) * | 1967-09-19 | 1971-01-26 | Watson Mfg Co | Auger-type pilot bit |
| NL6804149A (de) | 1968-03-22 | 1969-09-24 | ||
| DE7507903U (de) * | 1975-03-13 | 1976-10-07 | Fischer, Artur, 7244 Waldachtal | Steinbohrer |
| DE2806725C2 (de) * | 1978-02-17 | 1986-12-11 | Horst 6000 Frankfurt Klünder | Kreuzblattbohrer zum Einführen in Rohrleitungen |
| SU1137161A1 (ru) | 1983-05-16 | 1985-01-30 | Институт Горного Дела Со Ан Ссср | Устройство дл проходки скважин в грунте |
| DE4318759A1 (de) | 1993-06-05 | 1994-12-08 | Alexander Dipl In Muehlhaeuser | Vorrichtung zur Reinigung von Rohren |
| DE9400460U1 (de) * | 1994-01-10 | 1994-03-03 | Zillmann, Bruno, 12623 Berlin | Verlängerbare Sonnenblende an Kraftfahrzeugen |
| AT405308B (de) | 1997-04-16 | 1999-07-26 | Matlschweiger Peter | Verfahren und vorrichtung zum reinigen einer rohrleitung mit fallstrang |
-
2000
- 2000-11-22 DE DE10057877A patent/DE10057877C2/de not_active Expired - Fee Related
-
2001
- 2001-11-22 WO PCT/EP2001/013612 patent/WO2002042014A1/de not_active Ceased
- 2001-11-22 DE DE50104442T patent/DE50104442D1/de not_active Expired - Lifetime
- 2001-11-22 US US10/432,311 patent/US6932170B2/en not_active Expired - Lifetime
- 2001-11-22 EP EP01997366A patent/EP1353765B1/de not_active Expired - Lifetime
- 2001-11-22 AT AT01997366T patent/ATE281250T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0242014A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1353765B1 (de) | 2004-11-03 |
| US6932170B2 (en) | 2005-08-23 |
| US20040084221A1 (en) | 2004-05-06 |
| ATE281250T1 (de) | 2004-11-15 |
| DE50104442D1 (de) | 2004-12-09 |
| DE10057877C2 (de) | 2002-10-17 |
| DE10057877A1 (de) | 2002-05-29 |
| WO2002042014A1 (de) | 2002-05-30 |
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