EP3409880A1 - Foret à glace hybride - Google Patents

Foret à glace hybride Download PDF

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Publication number
EP3409880A1
EP3409880A1 EP17173243.1A EP17173243A EP3409880A1 EP 3409880 A1 EP3409880 A1 EP 3409880A1 EP 17173243 A EP17173243 A EP 17173243A EP 3409880 A1 EP3409880 A1 EP 3409880A1
Authority
EP
European Patent Office
Prior art keywords
drill
hybrid ice
hybrid
ice
shank
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
Application number
EP17173243.1A
Other languages
German (de)
English (en)
Other versions
EP3409880B1 (fr
Inventor
Klaus Mutschlechner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intercable GmbH
Original Assignee
Intercable GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Intercable GmbH filed Critical Intercable GmbH
Priority to EP17173243.1A priority Critical patent/EP3409880B1/fr
Publication of EP3409880A1 publication Critical patent/EP3409880A1/fr
Application granted granted Critical
Publication of EP3409880B1 publication Critical patent/EP3409880B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/008—Drilling ice or a formation covered by ice
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00—Accessories for drilling tools
    • E21B12/04—Drill bit protectors

Definitions

  • the invention relates to a hybrid ice drill for producing a borehole in ice and snow for receiving and anchoring slalom and net bars for skiing. Furthermore, the invention relates to a use of the hybrid ice drill for producing the borehole in ice and snow for receiving and anchoring slalom and net bars for skiing.
  • ice drill which have a drill shank made of metal and a spiral drill spiral made of plastic.
  • the helical drill helix can be, for example, positively connected to the drill shank, or the drill shank is encapsulated by the plastic of the helical drill helix.
  • Such hybrid ice drills are characterized in particular by their low weight and their corrosion resistance. By means of said encapsulation in a corresponding molding tool, however, the shaping of the drill spiral can be restricted, which can influence the drilling result.
  • the object of the present invention is to provide an alternative ice drill of the type mentioned, which is characterized in particular by a low weight and allows an improved drilling result.
  • a hybrid ice drill for creating a borehole in ice and snow for receiving and anchoring slalom and net poles for skiing.
  • the hybrid ice drill comprises a drill shank and a drill helix with helices in a helical expansion direction and with grooves in a helical expansion direction, the drill helix surrounding the drill shank in regions coaxially.
  • the drill shank is made of a metal
  • the drill helix is made of a plastic, wherein the helices each have a constant cross section along their helical extension direction.
  • the spiral drill spiral with its helices and grooves can be made in particular by machining, for example by milling.
  • the shaping of the drill helix is subject to less restrictions than the molding of a drill shank with plastic in a corresponding molding tool known from the prior art.
  • the machining of the drill helix allows the formation of the constant cross section of the helices, with the constant cross section, a particularly good drilling result can be achieved.
  • the hybrid ice drill By making the drill spiral of plastic, the hybrid ice drill can have a particularly low weight. As a result, the ice drill can be easily transported and driven with a particularly low energy consumption by means of an electric drill. Furthermore, the particularly light hybrid ice drill according to the present invention is characterized in that the helices of the drill helix are not sharp-edged. This makes it possible that even with an inclination of the hybrid ice drill during a drilling operation, a good drilling result can be achieved with a borehole, which has only a small expansion.
  • the drill shank only partially penetrates the drill helix in the axial direction.
  • the comparatively short drill stem protrudes only a small distance from a first end portion of the drill spiral in the Inside of the drill spiral into it.
  • the first end portion of the drill spiral is located on that side of the hybrid ice drill, on which a clamping into a drill chuck is provided in a drill.
  • the drill shaft is axially fixed in an axial receptacle of the drill spiral and rotatably received in the receptacle by means of a first axial tooth profile of the drill shaft and by means of a corresponding second tooth profile of the axial recording of the drill spiral.
  • a total length of the ice drill may be less than 470 mm.
  • the hybrid ice drill according to the invention builds smaller than known from the prior art ice drills, which may typically have a length of 540 mm and more. This in particular allows the hybrid ice drill according to this embodiment of the invention to be carried particularly comfortably on a belt of a user of the hybrid ice drill, the length according to this embodiment being sufficient to provide a sufficiently deep bore for slalom and net bars.
  • the drill helix is made of a plastic which is reinforced with glass fibers, carbon fibers or similar fillers.
  • a particularly high resistance to breakage, corrosion resistance and resilience of the drill bit can be achieved as it is demanded the hybrid ice drill in particular when creating a hole in ice and snow for receiving and anchoring slalom and net bars for skiing
  • the helices each comprise a leading edge, which is in each case arranged in particular on one of the feed direction of the ice drill side facing the relevant helix, and a trailing edge which is arranged in each case in particular on a feed direction of the ice drill remote from the respective helix.
  • the respective leading edge may be rounded or provided with a chamfer.
  • the respective rear edge may be rounded or provided with a chamfer.
  • the coils can each be rounded into an adjacent groove.
  • a particularly smooth surface of a bore bored by the ice drill can likewise be made possible.
  • the ice drill according to the first aspect of the invention may further comprise a blade member which is secured to the drill bit helix on a side of the drill bit which faces away from the drill bit shaft.
  • the blade element is used in particular to prepare material to be drilled, in particular particularly hard material, which could only be bored through the drill helix with great effort or not at all, by cutting for the material removal by means of the drill helix.
  • the blade member may be releasably secured to allow replacement of the blade member by a blade member of a different size, for example, to drill holes with correspondingly different sizes diameters.
  • the blade element may have at least two blades, which are separated from each other in the attached state by an air gap.
  • a first of the blades may be attached to a free end of a first coil
  • a second of the blades may be attached to a free end of a second coil.
  • the air gap can be chosen very narrow, eg 1 mm or less.
  • the two blades may continue to be pointed, with corresponding tips in particular may converge to facilitate attachment of the drill.
  • the blade element, in particular its blade or blades can also be made of a hard metal in order to achieve a particularly good cutting result with little wear.
  • the drill shank forms a pin for receiving in a chuck of an electric drill for driving the hybrid ice drill at a free-running end.
  • the free expiring end of the drill shank have a suitable for receiving in the drill chuck outer contour.
  • the hybrid ice drill may include a protective cap for the blade element.
  • the protective cap may be shaped and arranged to be slid over the blade member such that at least the sharp blades of the blade member are obscured by the protective cap.
  • the hybrid ice drill further comprises a protective cover for the pin for receiving in the chuck.
  • the protective cover can be shaped and arranged such that it can be pushed over the pin at least partially, preferably completely, so that the pin can be protected against damage during transport.
  • a contribution can be made to protect a person who transports the hybrid ice drill from injury; or other objects which are transported together with the drill (eg in a backpack).
  • an ice drill according to the first aspect of the invention for creating a borehole in ice and snow for receiving and anchoring slalom and net poles for skiing.
  • Fig. 1 1 shows a hybrid ice drill 1 with a drill shank 2 and with a drill helix 3.
  • the drill helix 3 comprises two spiral helices 4 and 5 and two spiral grooves 6 and 7 extending between the helices 4 and 5.
  • Both the helices 4 and 5 and the grooves 6 and 7 extend in a helical extension direction along the longitudinal axis L of the hybrid ice drill 1.
  • the helices 4 and 5 each have a constant cross-section along their helical extension direction.
  • the helices 4, 5 can each rounded in an adjacent groove 6, 7 pass. As a result, a particularly smooth surface of a bore drilled by means of the hybrid ice drill 1 can be made possible.
  • the hybrid ice drill 1 is adapted and used to create a wellbore in ice and snow for receiving and anchoring slalom and net poles for skiing.
  • the drill spiral 3 with its coils 4, 5 and grooves 6, 7 may for example have a length of 426 mm.
  • the drill spiral 3 is made of a plastic, in particular of a plastic, which is reinforced with glass fibers, carbon fibers or similar fillers.
  • the drill shank 2 is made of a metal, e.g. made of steel or a light metal such as aluminum.
  • a part of the substantially cylindrical drill shank 2 is received in the embodiment shown in a corresponding axial receptacle in the form of an axial bore of the drill spiral 3.
  • the drill spiral 3, in the embodiment shown in particular 426 mm, is substantially longer than the drill shank 2, which may be shorter than 120 mm, for example, so that the Drill shank 2, the drill spiral 3 in the axial direction L only partially penetrates.
  • the drill spiral 3 surrounds the drill shank 2 in regions coaxially.
  • the drill shank 2 forms a pin 9 for receiving in a chuck of an electric drill (not shown) for driving the hybrid ice drill 1, wherein the pin. 9 a suitable for receiving in the drill chuck outer contour.
  • the unextended ends 8 of the drill shank 2, which are not accommodated in the receptacle of the drill spiral 3, can have a length of 43 mm in the exemplary embodiment shown.
  • the drill shank 2 is axially fixed in the axial accommodation of the drill spiral 3. Furthermore, the drill shaft 2 is rotatably received in the recording.
  • the drill shank 2 has on its outer lateral surface a first axial tooth profile 10 (cf. Fig. 5 ).
  • An inner surface of the receiving drill bit 3 has a second axial tooth profile (not visible), which corresponds to the first axial tooth profile 10 of the drill shaft 2.
  • the drill shank 2 is received in the receptacle of the drill spiral 3 in such a way that the first tooth profile 10 of the drill shank 2 engages with the second tooth profile of the drill spiral 3 so that the drill shank 2 and the drill spiral 3 are connected to each other in a rotationally fixed manner.
  • the through Fig. 5 shown drill shank 2 has an outer first axial portion which comprises the pin 9, a central second axial portion which comprises the first tooth profile 10, and an outer third axial portion which is intended to be included in the receptacle of the drill spiral 3 become.
  • a blade element 11 with a first blade 12 and with a second blade 13 on a side facing away from the drill shank 2 side of the drill spiral 3 is attached to the drill spiral 3.
  • the blade element 11 is used in particular to prepare material to be drilled by cutting for conveying by means of the drill spiral 3.
  • the blades 12, 13 of the blade member 11 are made of a hard metal and releasably fastened by means of releasable fastening means 14 to 17, each attached to a free expiring end of the coils 4, 5. This allows replacement of the blades 12, 13 by other blades (not shown) of a different size in order, for example, to be able to drill holes with correspondingly different diameters.
  • the two blades 12, 13 are separated by an air gap 18 in the attached state.
  • the air gap 18 can be chosen very narrow, e.g. 1 mm or less. Through the air gap 18 can be achieved that when using the hybrid ice drill 1 through the two blades 12, 13, an annular region is cut.
  • the two blades 12, 13 may further be tip-shaped, with corresponding tips 19, 20 in particular may converge to facilitate attachment of the hybrid ice drill 1.
  • the helices 4, 5 each have a leading edge 21 and a trailing edge 22, wherein the guide edges 21 and the trailing edges 22 are each provided in the embodiment shown with a chamfer 23 and 24 respectively.
  • These chamfers 23, 24 contribute to avoid tilting of the hybrid ice drill 1 during drilling, especially in ice or snow. Furthermore, a particularly smooth surface of a bore drilled by means of the hybrid ice drill 1 can be made possible.
  • chamfers 23 and 24 for example, radii or rounding can also be provided.
  • the hybrid ice drill 1 may comprise a protective cap 25 for the blade element 11.
  • the protective cap 25 may be shaped and arranged to be slid over the blades 12, 13 of the blade member 11, so that at least the sharp blades 12, 13 of the blade member 11 are covered by the protective cap 25.
  • the hybrid ice drill 1 may further comprise a protective sheath 26 for the pin 8 of the drill shank 2.
  • the protective cover 26 may be shaped and arranged such that it can be pushed over the pin 8 at least partially, preferably completely, so that the pin 8 can be protected against damage during transportation of the hybrid ice drill 1; or other objects which are transported together with the drill (eg in a backpack).

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
EP17173243.1A 2017-05-29 2017-05-29 Foret à glace hybride Active EP3409880B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17173243.1A EP3409880B1 (fr) 2017-05-29 2017-05-29 Foret à glace hybride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17173243.1A EP3409880B1 (fr) 2017-05-29 2017-05-29 Foret à glace hybride

Publications (2)

Publication Number Publication Date
EP3409880A1 true EP3409880A1 (fr) 2018-12-05
EP3409880B1 EP3409880B1 (fr) 2020-07-08

Family

ID=58800717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17173243.1A Active EP3409880B1 (fr) 2017-05-29 2017-05-29 Foret à glace hybride

Country Status (1)

Country Link
EP (1) EP3409880B1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372763A (en) * 1965-06-14 1968-03-12 Fischer Artur Drill
EP2875886A1 (fr) * 2013-11-25 2015-05-27 Intercable Srl Foret hélicoïdal et son procédé de fabrication
WO2017016890A1 (fr) * 2015-07-27 2017-02-02 Johann Eberhard Gmbh Foret à glace

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372763A (en) * 1965-06-14 1968-03-12 Fischer Artur Drill
EP2875886A1 (fr) * 2013-11-25 2015-05-27 Intercable Srl Foret hélicoïdal et son procédé de fabrication
WO2017016890A1 (fr) * 2015-07-27 2017-02-02 Johann Eberhard Gmbh Foret à glace

Also Published As

Publication number Publication date
EP3409880B1 (fr) 2020-07-08

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