WO2016042467A1 - Machinery for the machining of ceramic articles - Google Patents
Machinery for the machining of ceramic articles Download PDFInfo
- Publication number
- WO2016042467A1 WO2016042467A1 PCT/IB2015/057073 IB2015057073W WO2016042467A1 WO 2016042467 A1 WO2016042467 A1 WO 2016042467A1 IB 2015057073 W IB2015057073 W IB 2015057073W WO 2016042467 A1 WO2016042467 A1 WO 2016042467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- machinery
- tool
- machining
- fact
- cooling
- Prior art date
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. These motors operate at approx. 2800 rpm and are directly connected to the tool associated with a relative spindle.
- 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, etc.
- 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 traditional machinery used for dry cooling is linked to the fact that at conventional speeds (approx. 2800 rpm) the machining of very resistant materials such as those with compact paste (e.g. porcelain stoneware), involves overheating of the tool and of other mechanical parts, such as the spindle, which are impossible to control with dry cooling. It is therefore necessary to use water or other liquids resulting in the production of waste sludge the handling and disposal of which involve a considerable expenditure in terms of time and resources.
- the machinery of known type provides a differentiated cooling of the tool and of the mechanical parts which support it in rotation, with consequent high construction and maintenance complexity.
- Another drawback of known machinery is linked to the fact 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.
- a further 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.
- the main aim of the present invention is to provide a piece of machinery which allows an efficient, easy to manufacture and affordable tool cooling.
- one object of the present invention is to simplify, with respect to the machinery of known type, the cooling of the tool and of the mechanical parts which support it in rotation.
- Another object 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.
- 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 detail of the machinery according to the invention
- Figure 3 is a front view of a detail according to the invention.
- 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, a motor shaft 10 connected to said motor element 4 and supporting the tool 5 in rotation.
- the machinery 1 also comprises 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 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.
- the 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.
- cooling means 18, 19, 22, 23 are the type of oil cooling means.
- the operation of the present invention is as follows.
- the compression means 19 send compressed air to the common manifold 18 through the inlet conveyor element 22.
- the motor element 4 rotates at approx. 2800 rpm and the first pulley 8 also rotates with it.
- 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 tool 5 associated with the second pulley 9 by means of the shaft 10 it will also rotate at the same speed as the second pulley 9.
- the machinery using this type of tool allows for a cooling of the same by means of dry processes also in the machining of high resistant ceramic material.
- the machinery thanks to the use of the motion transmission means described above, allows to rotate the tool also at higher speeds than the rotation speed of the motor that operates it.
- 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.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580054672.3A CN107107311A (en) | 2014-09-16 | 2015-09-15 | Machinery for processing ceramics |
EP15788191.3A EP3194117B1 (en) | 2014-09-16 | 2015-09-15 | Machinery for the machining of ceramic articles |
PL15788191T PL3194117T3 (en) | 2014-09-16 | 2015-09-15 | Machinery for the machining of ceramic articles |
ES15788191.3T ES2687440T3 (en) | 2014-09-16 | 2015-09-15 | Machines for machining ceramic items |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO2014A000262 | 2014-09-16 | ||
ITMO20140262 | 2014-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016042467A1 true WO2016042467A1 (en) | 2016-03-24 |
Family
ID=51846818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2015/057073 WO2016042467A1 (en) | 2014-09-16 | 2015-09-15 | Machinery for the machining of ceramic articles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3194117B1 (en) |
CN (1) | CN107107311A (en) |
ES (1) | ES2687440T3 (en) |
PL (1) | PL3194117T3 (en) |
WO (1) | WO2016042467A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201900001429A1 (en) * | 2019-01-31 | 2020-07-31 | Simec Spa | CALIBRATION AND / OR SANDING HEAD |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4015241A1 (en) * | 1990-05-10 | 1991-11-14 | Universal Kugellager Gmbh | Grease lubricated bearings for machine tool spindle - has passageways for flow of air to prevent ingress of cooling fluid and second annular gap through bearing |
US20060053026A1 (en) * | 2004-09-07 | 2006-03-09 | Unist, Inc. | Machine lubricant and coolant distribution system |
EP1932617A1 (en) * | 2006-12-14 | 2008-06-18 | Gleason Cutting Tools Corporation | Machine spindle |
-
2015
- 2015-09-15 WO PCT/IB2015/057073 patent/WO2016042467A1/en active Application Filing
- 2015-09-15 ES ES15788191.3T patent/ES2687440T3/en active Active
- 2015-09-15 CN CN201580054672.3A patent/CN107107311A/en active Pending
- 2015-09-15 PL PL15788191T patent/PL3194117T3/en unknown
- 2015-09-15 EP EP15788191.3A patent/EP3194117B1/en not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4015241A1 (en) * | 1990-05-10 | 1991-11-14 | Universal Kugellager Gmbh | Grease lubricated bearings for machine tool spindle - has passageways for flow of air to prevent ingress of cooling fluid and second annular gap through bearing |
US20060053026A1 (en) * | 2004-09-07 | 2006-03-09 | Unist, Inc. | Machine lubricant and coolant distribution system |
EP1932617A1 (en) * | 2006-12-14 | 2008-06-18 | Gleason Cutting Tools Corporation | Machine spindle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT201900001429A1 (en) * | 2019-01-31 | 2020-07-31 | Simec Spa | CALIBRATION AND / OR SANDING HEAD |
Also Published As
Publication number | Publication date |
---|---|
PL3194117T3 (en) | 2018-12-31 |
ES2687440T3 (en) | 2018-10-25 |
EP3194117A1 (en) | 2017-07-26 |
CN107107311A (en) | 2017-08-29 |
EP3194117B1 (en) | 2018-06-27 |
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