EP2397251A1 - Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension - Google Patents

Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension Download PDF

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Publication number
EP2397251A1
EP2397251A1 EP10166161A EP10166161A EP2397251A1 EP 2397251 A1 EP2397251 A1 EP 2397251A1 EP 10166161 A EP10166161 A EP 10166161A EP 10166161 A EP10166161 A EP 10166161A EP 2397251 A1 EP2397251 A1 EP 2397251A1
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EP
European Patent Office
Prior art keywords
tool
deburring
pressure
spindle
tool spindle
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
EP10166161A
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German (de)
English (en)
Other versions
EP2397251B1 (fr
Inventor
Stefan Weber
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.)
Schwaebische Werkzeugmaschinen GmbH
Original Assignee
Schwaebische Werkzeugmaschinen 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.)
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Publication date
Application filed by Schwaebische Werkzeugmaschinen GmbH filed Critical Schwaebische Werkzeugmaschinen GmbH
Priority to ES10166161T priority Critical patent/ES2416070T3/es
Priority to EP20100166161 priority patent/EP2397251B1/fr
Publication of EP2397251A1 publication Critical patent/EP2397251A1/fr
Application granted granted Critical
Publication of EP2397251B1 publication Critical patent/EP2397251B1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/02Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for sharpening or cleaning cutting tools, e.g. files
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/083Deburring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00Severing by means other than cutting; Apparatus therefor
    • B26F3/004Severing by means other than cutting; Apparatus therefor by means of a fluid jet

Definitions

  • the present invention relates to a deburring tool for high-pressure deburring of workpieces with a deburring nozzle, via which a deburring liquid is directed onto the workpiece to be deburred.
  • the method of high-pressure deburring is used.
  • special machines are used in which a high-pressure nozzle ("deburring") exhibiting Deburring tool is guided by means of robots or conventional machine axes to the workpiece and to be deburred position.
  • the pressure generation is stationary by means of a high-pressure pump and is guided by means of pipes and hoses to the deburring.
  • the pressures during high-pressure deburring are usually 300 to 800 bar.
  • a deburring medium water, emulsion or oil can be used, the high-pressure deburring often combined with the washing.
  • the deburring tool is designed as a tool for changing a coolant supply tool spindle of a machine tool and has a high-pressure generating device which increases the coolant supplied via the tool spindle to a high-pressure deburring required high pressure and as deburring the deburring nozzle supplies.
  • the deburring tool according to the invention can be used on single-spindle or multi-spindle machine tools ("machining centers").
  • the deburring tool with its deburring nozzle can be loaded into the tool spindle via the tool changing system of the machine tool and then positioned as exactly as possible over the machine axes to the point to be deburred. Since the workpiece is still stretched during deburring in exactly the same position as in the previous machining, takes place in comparison to known high-pressure deburring a more accurate positioning of the deburring to the workpiece. This improves the deburring result and reduces the risk of damage to the workpiece due to a collision of the deburring nozzle (deburring lance) with the workpiece.
  • the special advantage for the customer is that in many cases he does not have to invest in a special machine for high-pressure deburring.
  • the tool spindle coolant (conventional coolant) with a "normal" high pressure of about 70 bar (150 bar max in special design with small cross sections or volume flows) fed and then guided in the tool spindle to the tool.
  • a "normal" high pressure of about 70 bar (150 bar max in special design with small cross sections or volume flows) fed and then guided in the tool spindle to the tool.
  • high pressure deburring does not work, and supplying the cooling liquid with higher pressures is also not possible with conventional tool spindles because the rotary union and the seals in the tool spindle are not suitable for such higher pressures.
  • the high pressure required for Hoch horrentgraten of at least about 200 bar, in particular 300 to 800 bar, is therefore according to the invention only "after" the tool spindle generated by a high-pressure generating device in the deburring tool itself.
  • the deburring tool is coupled via the standard tool spindle interface (e.g., hollow shaft taper interface (HSK)), and the coolant supply to the deburring tool is via the internal coolant supply to the tool spindle.
  • standard tool spindle interface e.g., hollow shaft taper interface (HSK)
  • the high-pressure generating device can be driven by the tool spindle.
  • the energy for the pressure increase is thus based on the rotation of the motor-driven iiverk Wegspindei.
  • An additional drive motor for the high-pressure generating device can thus be dispensed with.
  • the high pressure generation in the deburring tool can be done with different principles.
  • the high-pressure generating device is designed as a high-pressure pump whose pump element is rotationally coupled to the tool spindle.
  • pump systems such as radial piston or gear pumps, which are driven via the tool spindle and whose housing is rotationally fixed to the machine tool via a torque support.
  • pump systems are operated at a speed of about 2000 U / min.
  • pump systems in which a pump piston is driven by a diverter gear through the tool spindle. In this case, the spindle rotation is converted into an axial piston movement by means of a screw drive.
  • the pressure is generated according to the principle of a water spray gun.
  • the piston movement compresses the liquid which is supplied to the nozzle.
  • a torque arm is also required. This process does not work continuously in contrast to the aforementioned pump systems.
  • a suction stroke is required in each case, in which the cylinder is filled again with the cooling liquid to be compressed.
  • the high-pressure generating device is designed as a hydraulic pressure booster, which generates the pressure required for Hochlichentgraten high pressure of over 200 bar hydraulically from the supplied with about 70 bar coolant.
  • the entire deburring tool can be rotationally coupled to the tool spindle.
  • the high-pressure generating device is designed as a turbine (“turbine pump”) which is rotationally coupled to the tool spindle and generates the high pressure required for high-pressure deburring by virtue of its rotation in the supplied cooling fluid.
  • At least the housing of the deburring tool can be fixed in a rotationally fixed manner to the machine tool via a torque support or the entire deburring tool can be rotationally coupled to the tool spindle.
  • the invention also relates to a machine tool for machining workpieces with a workpiece holder and at least one tool spindle for selectively receiving one of a plurality of tools, wherein for machining a workpiece, the workpiece holder and the tool spindle are movable relative to each other and wherein the tool spindle to a recorded tool Having extending coolant supply, as well as with a deburring tool as trained above.
  • the advantage of the machine tool according to the invention is that only minor changes are necessary on the machine side. From today's point of view - at least for the period of the deburring process - only an improved filtration of the cooling tool supplied to the deburring tool is required. Further machine-side adjustments are not necessary.
  • the equipment of the machine tool with a torque support and an internal coolant supply in the tool spindle are standard in machining centers today.
  • the high-pressure generating device is located in the working space of the machine tool. Thus, safety risks are excluded by the already existing on the machine side safety devices, such as security cover, locking, etc. Furthermore, it is not necessary that the high-pressure generating device operates leak-free, because any escaping deburring liquid - as previously the cooling liquid - is collected in the working space.
  • the deburring tool can either rotate with the tool spindle or at least partially fixed in rotation by means of a torque support of the machine tool on the housing.
  • the deburring tool is accommodated in a tool magazine of a tool change system provided for the tool spindle, in order to be changed into the tool spindle when required.
  • the invention also relates to a method for high-pressure deburring of workpieces that are machined in a machine tool by means of a high-pressure on the workpiece to be deburred Entgratnetkeit, with a deburring tool is replaced as a change tool in a tool spindle of the machine tool, the one to Entgrattechnikmaschineitati leading cooling fluid supply, and wherein the coolant supplied via the tool spindle in the deburring tool is increased to the high pressure required for high pressure deburring and used as a deburring liquid.
  • the workpiece preferably remains tensioned in exactly the same position as in the case of a previous grating-producing machining operation.
  • machine tool (horizontal machining center) 1 has a machine frame 2 with at least one horizontal tool spindle 3 and with a workpiece holder 4 for receiving workpieces 5 , wherein for machining a workpiece 5, the tool spindle 3 is movable relative to the workpiece holder 4.
  • the tool spindle 3 is used for selectively receiving tools 6, which are accommodated in a tool magazine 7 of an automatic tool change system and are each loaded into the tool spindle 3.
  • the tool spindle 3 has an inner coolant supply 8 extending up to the tool 6 (FIG. Fig. 2 ), over which a cooling liquid 9 is led to the tool 6 to leak there through small holes and thereby cool the tool 6.
  • the filtered through a filter 10 cooling liquid 9 is supplied by a pump 11 with a machine-side pressure of about 70 bar via a rotary feedthrough 12 and the inner coolant supply 8 to the standard interface 13 (eg HSK) of the tool spindle 3, via which the respective recorded Tool 5 is coupled.
  • a deburring tool 20 For high-pressure deburring of a workpiece 5, a deburring tool 20 is provided, which is designed as a replacement tool for the tool spindle 3. As in Fig. 2 Shown in detail, the deburring tool 20 has a deburring lance 21 with two or more deburring nozzles 22 , via which a deburring liquid is directed under high pressure onto the workpiece 5 to be deburred.
  • a high-pressure generating device 23 is provided for this, which via the inner Coolant supply 8 with about 70 bar supplied cooling fluid 9 increased to the required high-pressure deburring high pressure of 300 to 800 bar and supplies as deburring to the deburring 22.
  • the pressure increase to the high pressure required for Hochlichentgraten high pressure is thus generated only after or downstream of the tool spindle 3 in the deburring tool 20 itself.
  • the deburring tool 20 with its deburring nozzle 22 can be changed over the tool change system of the machine tool 1 in the tool spindle 3 and then be positioned as exactly as possible over the machine axes of the movable workpiece holder 4 on the workpiece to be deburred 5 of the workpiece. Because the workpiece 5 is still stretched during deburring in exactly the same position as in the previous processing, compared to known Hochlichentgratmaschinen a more accurate positioning of the deburring 22 to the workpiece 5. This improves the Entgratfine and reduces the risk of damage to the workpiece 5 by a Collision of the deburring lance 21 with the workpiece 5.
  • the particular advantage for the customer is that in many cases he does not have to invest in a special machine for high-pressure deburring.
  • the high-pressure generating device 23 is located in the working space of the machine tool 1. Thus, safety risks through the machine-side safety devices, such as safety cover, locking, etc., excluded. Furthermore, it is not necessary that the high-pressure generating device 23 operates without leakage, because any escaping deburring liquid - as previously the cooling liquid 9 - is collected in the working space.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP20100166161 2010-06-16 2010-06-16 Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension Active EP2397251B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES10166161T ES2416070T3 (es) 2010-06-16 2010-06-16 Herramienta desbarbadora para un husillo de herramienta de una máquina herramienta, así como procedimiento para el desbarbado a alta presión
EP20100166161 EP2397251B1 (fr) 2010-06-16 2010-06-16 Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100166161 EP2397251B1 (fr) 2010-06-16 2010-06-16 Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension

Publications (2)

Publication Number Publication Date
EP2397251A1 true EP2397251A1 (fr) 2011-12-21
EP2397251B1 EP2397251B1 (fr) 2013-04-17

Family

ID=43033170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100166161 Active EP2397251B1 (fr) 2010-06-16 2010-06-16 Outil d'ébavurage pour une broche d'outil d'une machine-outil et procédé d'ébavurage haute tension

Country Status (2)

Country Link
EP (1) EP2397251B1 (fr)
ES (1) ES2416070T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11919012B2 (en) 2019-12-06 2024-03-05 Pdq Workholding Llc High pressure fluid tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598617A (en) * 1983-12-07 1986-07-08 Daishowa Seiki Co., Ltd. Tool holder assembly having cutting fluid supply circuit
US4818159A (en) * 1983-04-28 1989-04-04 Mizoguchi Iron Works & Co., Ltd. Cutting tool holder with oil holes
DE4403327A1 (de) * 1994-02-03 1995-08-10 Karl Bauch Reinigungsvorrichtung an mehrachsigen Werkzeugmaschinen
EP0669187A2 (fr) * 1994-02-25 1995-08-30 Sugino Corp. Machine-outil avec dispositif pour ébarber/nettoyer des pièces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818159A (en) * 1983-04-28 1989-04-04 Mizoguchi Iron Works & Co., Ltd. Cutting tool holder with oil holes
US4598617A (en) * 1983-12-07 1986-07-08 Daishowa Seiki Co., Ltd. Tool holder assembly having cutting fluid supply circuit
DE4403327A1 (de) * 1994-02-03 1995-08-10 Karl Bauch Reinigungsvorrichtung an mehrachsigen Werkzeugmaschinen
EP0669187A2 (fr) * 1994-02-25 1995-08-30 Sugino Corp. Machine-outil avec dispositif pour ébarber/nettoyer des pièces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11919012B2 (en) 2019-12-06 2024-03-05 Pdq Workholding Llc High pressure fluid tool

Also Published As

Publication number Publication date
ES2416070T3 (es) 2013-07-30
EP2397251B1 (fr) 2013-04-17

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