WO2016042464A1 - Équipement pour l'usinage d'articles en céramique - Google Patents

Équipement pour l'usinage d'articles en céramique Download PDF

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Publication number
WO2016042464A1
WO2016042464A1 PCT/IB2015/057069 IB2015057069W WO2016042464A1 WO 2016042464 A1 WO2016042464 A1 WO 2016042464A1 IB 2015057069 W IB2015057069 W IB 2015057069W WO 2016042464 A1 WO2016042464 A1 WO 2016042464A1
Authority
WO
WIPO (PCT)
Prior art keywords
machinery
machining
tool
fact
pulley
Prior art date
Application number
PCT/IB2015/057069
Other languages
English (en)
Inventor
Mario Corradini
Original Assignee
Ancora S.P.A.
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 Ancora S.P.A. filed Critical Ancora S.P.A.
Publication of WO2016042464A1 publication Critical patent/WO2016042464A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Definitions

  • the present invention relates to a piece of machinery for the machining of ceramic articles and by-products thereof.
  • These manufactured articles can be made with different ceramic materials which are selected by their different chemical- physical characteristics and mechanical properties.
  • unglazed porous paste ceramic materials such as bricks or earthenware
  • glazed porous paste ceramic materials such as majolica
  • compact paste ceramic materials such as stoneware and porcelain.
  • these tools are disc-shaped elements moved by a special motor.
  • inverter that can vary the spindle revs up to a maximum of approx. 5000 rpm.
  • the rotation of the tool allows different types of machining of the input material such as grinding, roughing, cutting and other machining operations which provide for a partial removal of material.
  • the strong friction generated by the action of the tool on the manufactured article causes the tool itself to overheat so as to require a control of the temperature by means of appropriate cooling systems.
  • cooling occurs by blowing air directly on the tool.
  • air For the removal of the waste material from the work area it is sufficient to provide for a traditional aspiration system.
  • cooling occurs by spraying water or other liquids on the tool.
  • water combines with waste material, thus producing a waste sludge that must be disposed of in compliance with the criteria established by the law in force.
  • Dry cooling can also be used in the machining of porcelain stoneware if this takes place at reduced speed which, on the other hand, involves a consequent reduction in the removed material and therefore in productivity.
  • a first drawback of known machinery is linked to the fact that the tools, directly connected to the motor or by means of an inverter, fail to achieve higher speeds than 5000 rpm. This entails the need, in order to achieve desired production volumes, to use a high number of tools with consequent high energy consumption, high investment costs and large overall dimensions.
  • a further drawback of traditional machinery for dry cooling is that, since each tool is cooled using part of the work produced by the respective motor, a loss of efficiency of the motors themselves is produced with a consequent increase in energy consumption of the production process.
  • the main aim of the present invention is to provide a piece of machinery for the machining of ceramic articles which allows to increase the spindle revolution number so as to use tools that achieve top efficiency at significantly higher speeds than those used to now in the ceramic sector.
  • Another object of the present invention is to provide a piece of machinery which allows using dry processes also in the machining of high resistant ceramic material.
  • a further object of the present invention is to provide a piece of machinery which allows to obtain an increase in efficiency and energy savings in the manufacturing process, compared to the machinery of known type.
  • Another object of the present invention is to provide a piece of machinery which allows to overcome the mentioned drawbacks of the prior art within the ambit of a simple, rational, easy, effective to use and low cost solution.
  • Figure 1 is a side elevation view of the machinery according to the invention
  • Figure 2 is a side sectional view of a machining device of the machinery of Figure 1
  • Figure 3 is a front elevation view of the machining device of Figure 2.
  • reference number 1 globally designates a piece of machinery for the machining of ceramic articles and the like.
  • the piece of machinery 1 for the machining of ceramic articles or the like has a support frame 2 with which is associated at least a machining device 3 which comprises a motor element 4 associated with the support frame 2, a tool 5 for the machining of ceramic articles and motion transmission means 8, 9, 11 for transmitting motion from the motor element 4 to the tool 5.
  • the support frame 2 comprises a base structure 6 able to hold the machining device 3 in a predetermined working position.
  • the machining device 3 is fixed to the base structure 6 so that the tool 5 can work at a height from the ground coinciding with that of the line of forward movement 7 of the ceramic material to be machined.
  • the tool 5 is operable in rotation around a respective axis and is kinematically connected to the motor element 4.
  • the motion transmission means 8, 9, 11 comprise at least a first pulley 8 associated with the motor element 4, at least a second pulley 9 associated with a shaft 10, supporting the tool 5 in rotation and a belt element 11 which mutually connects the first pulley 8 to the second pulley 9.
  • the motor element 4 by operating the motor element 4, the rotary motion generated by the same is transmitted from the first pulley 8 to the second pulley 9 through the belt element 11 and, therefore, from the second pulley 9 to the tool 5 through the shaft 10.
  • the second pulley 9 has a smaller diameter than the first pulley 8 so as to enable the tool 5 to rotate at a higher speed than the speed of the motor element 4.
  • the diameter of the second pulley 9 is sized so that the tool 5 can reach a speed between 5000 and 7000 rpm, i.e. the appropriate speed to allow tools made with very resistant material to work in the most efficient manner.
  • the tool 5 is the type of a diamond wheel.
  • high resistant ceramic materials such as porcelain stoneware, can be machined without using wet cooling processes.
  • the machining device 3 comprises a containment body 12 for containing the shaft 10.
  • the body 12 is a substantially prismatic casing able to contain the shaft 10.
  • a gap 13 intended to contain cooling air and having at least an inlet opening 14 and at least an outlet opening 15 for such cooling air.
  • cooling air enters the gap 13 so as to lap and therefore cool the mechanical parts in motion within the body 12, such as the spindle or bearings that support the shaft 10 in rotation, preserving them from excessive and exhausting overheating due to the mechanical action they are subjected to during operation.
  • the tubular element 16 associated with the outlet opening 15 and able to convey air from the gap 13 to the tool 5.
  • the tubular element 16 comprises a first extremity associated with the outlet opening 15 and a second extremity associated with a nozzle 17 able to increase the output speed of air.
  • outlet section of cooling air defined by the nozzle 17, which is oriented so as to direct the exiting air jet towards the tool 5, is smaller than the transit section defined by the tubular element 16.
  • the machinery 1 comprises a plurality of machining devices 3 arranged in series along the line of forward movement 7 of the material to be machined identified with arrow 7.
  • the machinery 1 has cooling means 18, 19, 22, 23 of the machining devices 3.
  • the cooling means 18, 19, 22, 23 provide a common manifold 18 and compression means 19, where the common manifold 18 has an inlet port 20 able to receive cooling air from the compression means 19 and a plurality of outlet ports 21 of the cooling air.
  • the compression means 19 are made up of a compressor unit able to send pressurized air into the common manifold 18.
  • Alternative embodiments are not ruled out wherein the compression means 19 are formed by a turbine or a turbo-compressor unit or the like.
  • Each of the outlet ports 21 is connected to the inlet opening 14 of a respective machining device 3 so as to send cooling air into the respective gap 13.
  • the cooling means 18, 19, 22, 23 also comprise an inlet conveyor element 22 and a plurality of outlet conveyor elements 23.
  • the inlet conveyor element 22 is associated with the inlet port 20 so as to connect the common manifold 18 to the compression means 19.
  • Each of the outlet conveyor elements 23, on the contrary, is able to connect one of the outlet ports 21 to a respective inlet opening 14, so as to convey cooling air from the common manifold 18 to the machining device 3.
  • the inlet conveyor element 22 has a larger section than the outlet conveyor elements 23.
  • the sizing of the sections of the conveyor elements 22, 23 is such as to ensure a sufficient air flow to each machining device 3.
  • the motor element 4 rotates at approx. 2800 rpm and the first pulley 8 also rotates with it.
  • the belt element 11 By means of the belt element 11 the rotary motion is transferred to the second pulley 9 which, having a smaller diameter than the first pulley 8, will rotate at a faster speed, approx. 5000/7000 rpm.
  • the compression means 19 send compressed air to the common manifold 18 by means of the inlet conveyor element 22. Air in the common manifold 18, in turn, is distributed into the machining devices 3 by means of the outlet conveyor elements 23, entering in the corresponding gaps 13.
  • the transmission means making the subject of the present invention thus enable to considerably reduce, compared to machinery of known type, the number of tools used, production capacity being the same, thereby reducing energy consumption, investment costs and overall dimensions of the machine.
  • the piece of machinery then, using this type of tools, allows for a cooling of the same by means of dry processes also in the machining of high resistant ceramic material.

Abstract

Équipement (1) pour l'usinage d'articles en céramique ou similaires, ayant un cadre de support (2) et au moins un dispositif d'usinage (3) associé au cadre de support (2) et comprenant : - au moins un élément moteur (4) associé avec le cadre de support (2) ; - au moins un outil (5) pour l'usinage d'articles en céramique, qui peut être actionné en rotation autour d'un axe respectif et relié cinématiquement à l'élément de moteur (4) ; - des moyens de transmission de mouvement (8, 9, 11) depuis l'élément moteur (4) vers l'outil (5) ; où les moyens de transmission de mouvement (8, 9, 11) comprennent au moins une première poulie (8) associée à l'élément moteur (4), au moins une seconde poulie (9) associée à un arbre (10) supporter l'outil (5) en rotation, et au moins un élément courroie (11) pouvant relier la première poulie (8) à la seconde poulie (9).
PCT/IB2015/057069 2014-09-16 2015-09-15 Équipement pour l'usinage d'articles en céramique WO2016042464A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO20140261 2014-09-16
ITMO2014A000261 2014-09-16

Publications (1)

Publication Number Publication Date
WO2016042464A1 true WO2016042464A1 (fr) 2016-03-24

Family

ID=51904095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/057069 WO2016042464A1 (fr) 2014-09-16 2015-09-15 Équipement pour l'usinage d'articles en céramique

Country Status (1)

Country Link
WO (1) WO2016042464A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20162251A1 (it) * 2016-04-01 2017-10-01 Ancora Spa Impianto di raffreddamento e aspirazione per teste di lucidatura di manufatti ceramici o pietre naturali

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015241A1 (de) * 1990-05-10 1991-11-14 Universal Kugellager Gmbh Werkzeugmaschinenspindellagerung
US20060053026A1 (en) * 2004-09-07 2006-03-09 Unist, Inc. Machine lubricant and coolant distribution system
EP1932617A1 (fr) * 2006-12-14 2008-06-18 Gleason Cutting Tools Corporation Axe de machine
WO2013091208A1 (fr) * 2011-12-22 2013-06-27 中国科学院长春光学精密机械与物理研究所 Dispositif de polissage pour support du type fourche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015241A1 (de) * 1990-05-10 1991-11-14 Universal Kugellager Gmbh Werkzeugmaschinenspindellagerung
US20060053026A1 (en) * 2004-09-07 2006-03-09 Unist, Inc. Machine lubricant and coolant distribution system
EP1932617A1 (fr) * 2006-12-14 2008-06-18 Gleason Cutting Tools Corporation Axe de machine
WO2013091208A1 (fr) * 2011-12-22 2013-06-27 中国科学院长春光学精密机械与物理研究所 Dispositif de polissage pour support du type fourche

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20162251A1 (it) * 2016-04-01 2017-10-01 Ancora Spa Impianto di raffreddamento e aspirazione per teste di lucidatura di manufatti ceramici o pietre naturali
WO2017168366A1 (fr) * 2016-04-01 2017-10-05 Ancora S.P.A. Système de refroidissement et d'aspiration pour têtes pour polir des articles fabriqués en céramique ou des pierres naturelles

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