WO2016201475A1 - Dispositif de débourrage - Google Patents

Dispositif de débourrage Download PDF

Info

Publication number
WO2016201475A1
WO2016201475A1 PCT/AT2016/050202 AT2016050202W WO2016201475A1 WO 2016201475 A1 WO2016201475 A1 WO 2016201475A1 AT 2016050202 W AT2016050202 W AT 2016050202W WO 2016201475 A1 WO2016201475 A1 WO 2016201475A1
Authority
WO
WIPO (PCT)
Prior art keywords
hammer
valve
hammers
beat frequency
actuator
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.)
Ceased
Application number
PCT/AT2016/050202
Other languages
German (de)
English (en)
Inventor
Stefan SUMEREDER
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.)
Fill GmbH
Original Assignee
Fill 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 Fill GmbH filed Critical Fill GmbH
Priority to MX2017014896A priority Critical patent/MX2017014896A/es
Priority to CN201680034984.2A priority patent/CN107743424A/zh
Priority to EP16741843.3A priority patent/EP3307459B1/fr
Publication of WO2016201475A1 publication Critical patent/WO2016201475A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/005—Removing cores by vibrating or hammering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines
    • B22C19/06—Devices for rapping or loosening the pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof

Definitions

  • the invention relates to a device for coring a cast workpiece, the device having at least one hammer.
  • the invention relates to a method for coring a cast workpiece with at least two hammers.
  • the workpieces can be set in vibration by means of a hammer and in this way the core can be smashed.
  • a device or a method of the type mentioned are known for example from DE10136713 AI.
  • a disadvantage of the known solutions is, above all, that can be set in this type of construction no defined beat frequency of the hammer. This has the disadvantage that no optimal energy transfer to the destruction of the core is possible.
  • the device has at least one adjusting means for setting a beat frequency of the at least one hammer.
  • a defined beat frequency is understood to be a predefined beat frequency.
  • the beat frequency can be selected and adjusted as required.
  • the invention makes it possible to freely select the beat frequency of the hammer in a wide band range and to realize an optimal and defined energy transfer to the core.
  • the device has at least one actuator for actuating the at least one actuating means.
  • the at least one hammer may be a pneumatic hammer.
  • the at least one actuator comprises at least one valve which is arranged between at least one compressor and a piston / cylinder unit of the pneumatic hammer.
  • the at least one valve can alternately be located on different sides of a hammer acting on a hammer head and slidably mounted in a longitudinal direction of a working cylinder of the piston / cylinder unit pistons areas of the working cylinder with the Compressor connected.
  • a high impact frequency with a low mechanical load of the valve can be achieved by the fact that the at least one valve is designed as a rotary valve.
  • the device has at least one controller connected to the at least one actuator for controlling a beat frequency of the at least one hammer and an input unit connected to the controller for inputting Has values for the beat frequency.
  • the energy transfer to the workpiece can be optimized in that the device has at least two hammers according to one of claims 1 to 7 with mutually phase-shifted impact movements.
  • the time required for coring can be significantly reduced by the device coupling a plurality of phase-shifted striking movements Hammers, wherein the hammering movements of each hammer is out of phase with each of the striking movements of the other hammers.
  • the abovementioned object can also be achieved with a method of the type mentioned in the introduction by determining a beat frequency for each hammer in a step i) and a phase shift between striking movements of the at least two hammers in a step ii) Steps i) - ii) in the subsequent step iii) the at least two hammers with the set beat frequency and phase shift perform a flapping motion and smash a core present in the workpiece.
  • Fig. 1 is a block diagram of a device according to the invention.
  • FIG. 2 shows a hammer from FIG. 1 with a rotary valve in more detail
  • FIG. 3 shows a cross section of the hammer and the valve of Figure 2 in a first switching position of the rotary valve ..;
  • Fig. 4 is a cross section of the hammer and the valve of Fig. 2 in a second
  • a device 1 for coring a cast workpiece has one or more hammers 2, 3, 4. Furthermore, the device 1 has one or more adjusting means 5, 6 for setting a beat frequency of the hammers 2, 3, 4.
  • the hammers 2, 3, 4 may be mounted stationary and, for example, act on a clamping plate, not shown here, on which the workpiece is clamped, and put them in vibration. Alternatively, the hammers can also act directly on the workpiece. As a result of the energy transmitted by the hammering 2, 3, 4, a mold core, usually made of sand, of the workpiece is smashed.
  • an actuator 7 may be provided for actuating the actuators 5, 6, an actuator 7 may be provided.
  • the actuator may, for example, be an actuator that is electro-mechanical, in particular in the form of an electric motor with controllable speed.
  • Fig. 2. can be used as a hammer 2, 3, 4 a pneumatic hammer 9 are used.
  • the actuator 5, 6 used to control the pneumatic hammer 9 may comprise a valve 8, which is arranged between a in Fig. 1 with reference numeral 10 provided compressor and a piston / cylinder unit 11 of the pneumatic hammer 9.
  • valve 8 areas of the working cylinder 13 located on different sides of a percussion piston 14 acting on a hammer head 12 and slidably mounted in a longitudinal direction of a working cylinder 13 of a piston / cylinder unit 11 of the pneumatic hammer 9 can be connected to the compressor 10 alternately.
  • the valve 8 is, as shown in FIGS. 3 and 4, particularly preferably a rotary valve.
  • the rotary valve may have a valve body penetrated by channels, which is surrounded by a valve sleeve.
  • openings 17, 18, 19, 20 are arranged, which can be brought to the outputs of the channels of the valve body to cover.
  • the valve body can sit on a shaft which is driven by means of the actuator 7.
  • the channels are alternately connected to the opening 19 of the valve 8 connected to the compressor 10 and to the openings 17 and 18 of the valve 8.
  • the opening 20 of the valve 8 is used for ventilation and can be connected to the environment.
  • the openings 17 and 18 of the valve 8 are connected to the two openings 21 and 22 of the piston / cylinder unit 11.
  • air is forced from the compressor 10 via the opening 21 into the working cylinder 13 of the piston / cylinder unit 11 and the percussion piston 14 in the direction the hammer head 15 moves.
  • the opening 22 of the working cylinder 13 is in this case connected via the openings 18 and 20 of the valve 8 for venting a located between the percussion piston 14 and the hammer head 15 region of the working cylinder 13 with the environment.
  • the opening 22 of the working cylinder 13 is connected to the compressor 10 and the percussion piston 14 is moved away from the hammer head 15 by the compressed air.
  • the opening 21 of the working cylinder 13 is connected to the environment via the openings 17 and 20 of the valve 8 for venting a region of the working cylinder 13 located between the percussion piston 14 and an end wall of the working cylinder 13 opposite the hammer head 15.
  • the direction of movement of the percussion piston 14 is indicated in Figures 3 and 4 by arrows.
  • a further, serving for ventilation opening 23 may be provided between the two openings 21 and 22 of the working cylinder 13, a further, serving for ventilation opening 23 may be provided.
  • a single valve 8 can be used to control them, the number of openings 17-20 in the valve jacket and the channels in the valve body and the length of the valve body correspondingly must be increased.
  • a plurality of individual valve body can be fixedly arranged on the shaft driven by the actuator 7.
  • the individual hammers 2, 3, 4 may be arranged so that a fixed phase offset between the impact movements the hammer 2, 3, 4 results.
  • the hammers 2, 3, 4 move in this arrangement at the same frequency and out of phase with a fixed phase offset to each other.
  • the device may include a controller 15 connected to the actuator 5, 6, for example a suitably programmed processor, and an input unit 16 connected to the controller, for example a keyboard, for inputting values for the Have beat frequency.
  • a hammering frequency is determined for each hammer in a step i) and a phase shift between hammer blows is determined in a step ii).
  • a step i) - ii) in the following step iii) perform the hammers 2, 3, 4 with the set beat frequency and phase shift a flapping motion and smash a present in the workpiece core.
  • the selection of the frequency can take place by means of a corresponding input unit 16.
  • the determination of the phase offset can be effected by a corresponding arrangement of the valve body on the shaft connected to the actuator 7 or a corresponding arrangement of the channels.
  • a plurality of valves 8 with a corresponding phase offset of the openings 17, 18, 19, 20 may be provided.
  • these or their components have been shown partly unevenly and / or enlarged and / or reduced in size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention concerne un dispositif (1) servant au débourrage d'une pièce coulée, ledit dispositif (1) comprenant au moins un marteau (2, 3, 4). Selon l'invention, le dispositif (1) comprend au moins un moyen de réglage (5, 6) permettant de régler une fréquence de frappe dudit au moins un marteau (2, 3, 4).
PCT/AT2016/050202 2015-06-15 2016-06-15 Dispositif de débourrage Ceased WO2016201475A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MX2017014896A MX2017014896A (es) 2015-06-15 2016-06-15 Dispositivo para expulsar el macho.
CN201680034984.2A CN107743424A (zh) 2015-06-15 2016-06-15 用于除芯的设备
EP16741843.3A EP3307459B1 (fr) 2015-06-15 2016-06-15 Dispositif de débourrage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50494/2015 2015-06-15
ATA50494/2015A AT517385B1 (de) 2015-06-15 2015-06-15 Vorrichtung zum Entkernen

Publications (1)

Publication Number Publication Date
WO2016201475A1 true WO2016201475A1 (fr) 2016-12-22

Family

ID=56511272

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2016/050202 Ceased WO2016201475A1 (fr) 2015-06-15 2016-06-15 Dispositif de débourrage

Country Status (5)

Country Link
EP (1) EP3307459B1 (fr)
CN (1) CN107743424A (fr)
AT (1) AT517385B1 (fr)
MX (1) MX2017014896A (fr)
WO (1) WO2016201475A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017222702A1 (de) 2017-12-14 2019-06-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Entkernen von Gussteilen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658455A1 (de) * 1976-12-23 1978-06-29 Krupp Gmbh Druckmittelbetriebenes schlagwerk mit fernbedienter hubverstellung
JP2000079460A (ja) * 1998-09-04 2000-03-21 Uinberu:Kk 打撃装置
FR2954195A1 (fr) * 2009-12-23 2011-06-24 Fonderie Du Poitou Aluminium Procede de decrochage par martelage utilisant un accelerometre
DE102011088958A1 (de) * 2011-12-19 2013-06-20 Robert Bosch Gmbh Werkzeugvorrichtung

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2217507B1 (de) * 1972-04-12 1973-08-09 Bauer, Karlheinz, Dr.-Ing., 8898 Schrobenhausen Hydraulischer hammer und seine verwendung fuer bohrhaemmer
FR2242204A2 (en) * 1973-08-28 1975-03-28 Gesab Automation Betonherstell Control valve for pneumatic piston tool - is square box with outlet on each face and rotary valve spindle
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
DE2928870A1 (de) * 1979-07-17 1981-02-12 Koehring Gmbh Bomag Division Massenkompensiertes stampf- und/oder schlagsystem
US5022309A (en) * 1989-08-17 1991-06-11 Ingersoll-Rand Company Variable frequency control for percussion actuator
DE4343589C1 (de) * 1993-12-21 1995-04-27 Klemm Guenter Fluidbetätigter Schlaghammer
DE4419499A1 (de) * 1994-06-03 1995-12-07 Interoc Vertriebsgesellschaft Hydraulisches Schlaggerät mit stufenlos regelbarer Schlagzahl und Schlagenergie
DE29616860U1 (de) * 1996-09-27 1996-12-05 Vaw Mandl & Berger Gmbh, Linz Vorrichtung zur Überwachung der Entkernung von Gußstücken
EP1040884A1 (fr) * 1999-04-02 2000-10-04 Fata Aluminium Division of Fata Group S.p.A. Dispositif de débourrage de pièces coulées par vibration
US6557652B2 (en) * 2000-05-18 2003-05-06 Guenter Klemm Method for performing ground or rock work and hydraulic percussion device
CN2851766Y (zh) * 2005-10-31 2006-12-27 江兮夏 双通道可变向阀门
KR100986853B1 (ko) * 2008-04-29 2010-10-08 현대자동차주식회사 실린더블록의 주물탈사용 햄머링 장치
ITTO20090437A1 (it) * 2009-06-09 2010-12-10 Artimpianti S N C Di Genre Walter E Botta Alberto Macchina sterratrice
KR101240961B1 (ko) * 2010-08-09 2013-03-11 주식회사 엘지화학 신규한 구조의 전지팩
DE102011088979A1 (de) * 2011-12-19 2013-06-20 Robert Bosch Gmbh Pneumatische Werkzeugvorrichtung
AT513849B1 (de) * 2013-03-04 2014-08-15 Tmt Bbg Res And Dev Gmbh Steuerung der Arbeitsfrequenz eines Schlagwerkes
CN204151771U (zh) * 2014-10-17 2015-02-11 国家电网公司 变电站地基自走式打夯装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658455A1 (de) * 1976-12-23 1978-06-29 Krupp Gmbh Druckmittelbetriebenes schlagwerk mit fernbedienter hubverstellung
JP2000079460A (ja) * 1998-09-04 2000-03-21 Uinberu:Kk 打撃装置
FR2954195A1 (fr) * 2009-12-23 2011-06-24 Fonderie Du Poitou Aluminium Procede de decrochage par martelage utilisant un accelerometre
DE102011088958A1 (de) * 2011-12-19 2013-06-20 Robert Bosch Gmbh Werkzeugvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017222702A1 (de) 2017-12-14 2019-06-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Entkernen von Gussteilen

Also Published As

Publication number Publication date
EP3307459A1 (fr) 2018-04-18
CN107743424A (zh) 2018-02-27
MX2017014896A (es) 2018-04-26
AT517385B1 (de) 2019-02-15
AT517385A1 (de) 2017-01-15
EP3307459B1 (fr) 2020-01-15

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