EP0463846B1 - Grinding method and apparatus - Google Patents

Grinding method and apparatus Download PDF

Info

Publication number
EP0463846B1
EP0463846B1 EP91305712A EP91305712A EP0463846B1 EP 0463846 B1 EP0463846 B1 EP 0463846B1 EP 91305712 A EP91305712 A EP 91305712A EP 91305712 A EP91305712 A EP 91305712A EP 0463846 B1 EP0463846 B1 EP 0463846B1
Authority
EP
European Patent Office
Prior art keywords
grinding
barrel
grinding barrel
objects
axis
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.)
Expired - Lifetime
Application number
EP91305712A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0463846A3 (en
EP0463846A2 (en
Inventor
Ietatsu Ohno
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0463846A2 publication Critical patent/EP0463846A2/en
Publication of EP0463846A3 publication Critical patent/EP0463846A3/en
Application granted granted Critical
Publication of EP0463846B1 publication Critical patent/EP0463846B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • B24B31/033—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels having several rotating or tumbling drums with parallel axes

Definitions

  • This invention relates to a grinding method and apparatus, and more particularly to a grinding method adapted to enclose objects that are to be ground and a grinding material in a grinding barrel and give the grinding barrel a variety of motions to grind the objects, and a grinding apparatus for implementing such a method.
  • a conventional grinding method adapted to enclose objects to be ground and a grinding material in a grinding barrel and give the grinding barrel a variety of motions that is, a so-called barrel grinding method employs a grinding barrel which is axially supported by a carrier or a drum, where the center of the grinding barrel is positioned concentrically with the rotating shaft about which the grinding barrel is rotated.
  • the grinding barrel is rotated by a driving unit or rotated in the same direction as a drum to produce a centrifugal force to thereby perform a grinding process.
  • the grinding barrel is rotated with the center thereof as the rotating axis, whereby objects to be ground and a grinding material in the grinding barrel are subjected to a repetition of identical circular motions or fixed motions. For this reason, only an upper portion of a mass of the objects to be ground and the grinding material can be agitated by an avalanche phenomenon to grind the objects to be ground.
  • the above-mentioned grinding method implies a number of problems such as a lack of uniformity in finished products, residue of the grinding materials in recesses, curved surfaces, rear surfaces and so on, bruises on the surfaces of ground objects, and so on. Furthermore, the grinding method as mentioned above is not capable of providing a sufficiently high quality of grinding even if the rotational speed of the grinding barrel is decreased to grind the objects for a long time.
  • the above-mentioned grinding barrel is constructed such that the diameter and the length thereof are chosen to be the same size. Such a construction may cause objects being ground to overlap each other, and accordingly a number of bruises are produced on the surface of ground objects.
  • a grinding barrel having the diameter and the length different from each other and a method of rotating a grinding barrel in forward and backward directions.
  • the above-mentioned grinding barrel generally comprises a single chamber therein and one to four grinding barrels are mounted on a drum.
  • the internal chamber of the barrel is appropriately re-shaped in accordance with the necessity for providing an optimal grinding for objects to be ground.
  • the conventional grinding barrel as mentioned above comprises a single internal chamber and the volume thereof is definite, so that it is difficult to grind a large number of different objects in a small quantity or precisely grind a heavy-weight or a large-volume object in such a barrel.
  • a troublesome time-consuming exchange is necessary every time a different grinding is to be performed. It is also difficult to precisely finish the surface of grounded objects due to bruises caused by collisions and contacts of objects being grounded.
  • DE-A-3828756 discloses a grinding method and apparatus according to the preamble of claim 1 and 2, respectively.
  • the present invention is characterised in that the axis of rotation of the grinding barrel is offset from, but parallel to, the central geometrical axis of the grinding barrel.
  • reference numeral 1 designates a driving unit for-driving a grinding apparatus of the present invention.
  • a rotary drum 2 formed in a reel shape, has a central shaft 3 which is rotatably supported by main bearing 5 disposed on the inner surfaces of side walls of an apparatus body 4.
  • turret drum plates 2a On one of turret drum plates 2a, there is integrally fixed a large pulley 6, such that the rotary drum 2 is rotated by the driving bit 1 through the large pulley 6 and a belt 7.
  • Reference numeral 8 designates a grinding barrel which is mounted on a grinding barrel mounting frame 11 after a grinding material 9 and objects to be ground are enclosed therein.
  • a plurality of (three in the drawing) grinding barrels 8 are mounted between the turret drum plates 2a at locations close to the outer periphery of the rotary drum 2, such that they are rotated in the direction opposite to the rotating direction of the rotary drum 2 through a rotating direction changing mechanism 12, whereby the grinding material 9 and the objects to be ground are agitated in a complex manner which has never been seen, thereby making it possible to provide an extremely precise finishing.
  • Reference numeral 13 designates a rotating shaft which projects toward the outside of the both sides of the grinding barrel fixing frame 11.
  • the grinding barrel fixing frame 11 is rotated with the rotating shaft 13 at the center.
  • the rotating direction changing mechanism 12 is principally composed of a motor 14, belts 15a, 15b, 15c, 15d, and a main pulley 16.
  • a motor 14 belts 15a, 15b, 15c, 15d, and a main pulley 16.
  • such mechanism may be composed of chains, sprockets, gears and so on.
  • the grinding barrel 8 is mounted in a manner that the rotating shaft 13 of the grinding barrel mounting frame 11 is eccentrically deviated from the center O of the grinding barrel 8 as shown in FIGS. 3a, 3b, 3c.
  • the rotating shaft 13 may be directly contacted to the grinding barrel 8 as shown in FIGS. 4, 5.
  • Such changes in the position of the center O allow the grinding barrel to rotate in a complex manner which has never been seen as shown in FIG. 7.
  • the grinding barrel 8 is provided with a balancing weight 17 for cancelling unbalance caused by the eccentric mounting of the grinding barrel 8 and the grinding material 9 and the objects 10 to be ground enclosed in the grinding barrel 8.
  • This balancing weight 17 may be a flywheel mounted on the driving unit 1.
  • a sufficiently heavy pulley for example, the aforementioned large pulley 6 may be used as the balancing weight 17 in place of the flywheel.
  • FIG. 8 illustrates a cross-section of the grinding barrel 8, where the center O is different from the center of the circulation of the grinding material 9 and the objects to be ground 10 in the barrel 8, and the above-mentioned complex movement is produced thereby.
  • FIGS. 9a - 9c illustrate that the grinding barrels 8 in a variety of shapes are mounted on grinding barrel carriers 11a which are integrated with the rotating shaft 13 of the grinding barrel mounting frame 11. Apart from the examples shown in FIGS. 9a - 9c, many variations can be thought.
  • reference numeral 18 shown in FIG. 4 designates a lid of the grinding barrel 8, and 19 a fixture for mounting the grinding barrel 8 on the grinding barrel mounting frame 11.
  • FIG. 10 shows the relationship between the diameter ( ⁇ ) and the length (L) of the grinding barrel 8.
  • FIGS. 11, 12 illustrate other shapes of the grinding barrel 8 which satisfy a condition expressed by L ⁇ O.8 x ⁇ . Since the grinding barrel is relatively deep, objects to be ground, even if existing in the vertical direction, will not overlap each other or collide with each other in the barrel.
  • FIGS. 13, 14, 15 illustrate the driving relationship among the constituent elements when the grinding barrel 8 is rotated in the forward and backward direction. Both ends of the central shaft 3 are supported by the main bearings 5 as shown in FIG. 2 for fixing the rotary drum 2. A gear 20 (a rotating body on the driving side) is secured on the central shaft 3.
  • a rotation of the rotary drum 2 therefore, causes the grinding barrel 8 to rotate through intermediate gears (intermediate rotating bodies) 21, 21a and gears 22 (rotating bodies on the driven side).
  • the rotary drum 2 and the grinding barrel 8 are adapted to be rotated by rotation, revolution, centrifugal force and so on, in the forward and backward directions by means of a known reversing means (not shown) provided therefor.
  • intermediate gears 21, 21a are respectively disposed on the left and right sides of the gears 22 on the axial line of the gears 20 and 22 for transmitting the rotation of the gear 20 to the gears 22. Also, in the event of forward and backward rotations, either one of the intermediate gears 21, 21a engages the gears 20, 22 and the other one is made free.
  • the associative actions are smoothly performed by the intermediate gears 21, 21a, and gears 20, 22, whereby the respective gears are prevented from being damaged or torn, in contrast with a conventional case where a single intermediate gear 21 is solely provided.
  • FIG. 16 shows a modification where the respective gears 20, 21, 21a, 22 are replaced with pulleys. It is also possible to couple a pulley 23 (a rotating body on the driving side) with a pulley 24 (a rotating body on the driven side) by means of a belt 25. If intermediate pulleys 26, 26a (intermediate rotating bodies) are arranged on both sides of the belt 25, switching of rotation in the forward and backward directions can be smoothly performed by an interaction of the intermediate pulleys 26, 26a, in a manner similar to the above-mentioned construction which employs gears.
  • FIGS. 17a, 17b show that objects to be ground are supported by supporters 8c or mounted on a supporting shaft 8d in the grinding barrel 8, which enables a highly precise grinding in a relatively short time.
  • FIGS. 18a, 18b illustrate the grinding barrel 8 in another shape, that is, octagonal in cross-section.
  • the internal chamber is divided into a plurality of sub-chambers 31 by parallel partition walls 30 disposed perpendicular to the rotating shaft 13 of the grinding barrel 8.
  • the respective sub-chambers 31 are provided with a lid, and a variety of different objects are accommodated separately in the respective sub-chambers 30 and ground.
  • the partition walls 30 are not limited to be perpendicular to the rotating shaft 13, and alternatively may be disposed with a predetermined angle with respect to the rotating shaft 13.
  • the grinding barrel 8 may also be formed as shown in FIGS. 19a, 19b, 20a, 20b, where partition walls 32, 32a, 33, 33a are disposed in parallel with the rotating shaft 13 in addition to the partition walls 30 to further divide the respective sub-chambers 30 into smaller chambers. With these grinding barrels, it is possible to simultaneously grind a more number of different objects by a single grinding apparatus as well as facilitate the accesses to the ground objects.
  • FIG. 21 shows that the grinding barrel 8 may be divided into sub-chambers by means of an inner barrel 34 without partition walls.
  • the grinding barrel 8 is composed of an outer barrel 35 and the inner barrel 34, both formed in a substantially identical shape.
  • the inner barrel 34 is made of a material such as rubber or synthetic resin in order to ensure the inner barrel 34 may be readily inserted into the outer barrel 35.
  • An opening 36 of the inner barrel 34 is provided with an engaging edge 38 projecting from the peripheral edge thereof for ensuring an engagement with an opening 37 of the outer barrel 35.
  • a lid 39 is attached on the engaging edge 38 for integrally closing the inner and outer barrels 34, 35.
  • Reference numeral 40 in the drawing designates a mount.
  • the grinding barrel 8 may be separately composed of an outer barrel 35 and an inner barrel 34 as shown in FIGS. 22a to 22d, which facilitates accesses to ground objects accommodated in the grinding barrel 8.
  • the grinding barrel 8 can be exchanged with another one in a short time.
  • reference numeral 41 shown in FIGS. 22b, 22c designates ribs protrusively formed on the inner wall of the inner barrel 34 for improving the agitating effect of the grinding material and the objects to be ground when the grinding barrel 8 is rotated.
  • a lid 42 shown in FIG. 22e is used for tightly closing each of the inner barrels 34.
  • a further embodiment of the grinding barrel 8 shown in FIG. 23 has an outer barrel 35 divided into a plurality of sub-chambers in two columns and inner barrels 34 respectively accommodated in the sub-chambers with lids 42 (see FIG. 22e) placed on the respective sub-chambers.
  • the inner barrel 34 is not necessarily provided with partition walls, and the lid 34 may be of any shape as long as it can tightly close the opening of the inner barrel 34.
  • the inner barrel 34 has a cross-sectional shape substantially identical to that of the outer barrel 35 so as to facilitate the insertion into and removal from the outer barrel 35 and is made of a material such as rubber or polyurethane which is readily formed in arbitrary shapes.
  • the inner barrel 34 since made of such elastic and flexible material, serves as a shock absorbing cushion for contents and promotes grinding.
  • This grinding barrel 8 also facilitates the exchange of each of the inner barrels 34 accommodated in the divided outer barrel 35.
  • the inner barrel 34 is provided with an engaging edge 38 for a correct accommodation in the outer barrel 35. Objects enclosed in the respective inner barrels 34 are ground by rotating the outer barrel 35.
  • a grinding barrel 8 shown in FIG. 24 has an outer barrel 35 appropriately divided by partition walls 30 and inner barrels 34 each accommodated in a sub-chamber of thus divided outer barrel 35 with a lid 42 attached thereon.
  • FIGS. 25a to 25d In a grinding barrel 8 shown in FIGS. 25a to 25d, after inner barrels 34 are separately accommodated in an outer barrel 35, an opening of the outer barrel 35 is closed by a lid 43, and a fixing plate 44 is engaged with protrusions 46 formed on an edge portion 45 of the opening of the outer barrel 35 and fastened by a nut 46a together with the lid 43 disposed therebelow.
  • the inner barrels 34 if previously formed in a hexagonal or circular shape, can be accommodated in the outer barrel 35 without producing swinging motions.
  • Reference numeral 47 in FIGS. 25a, 25d designates a handle.
  • FIGS. 26a, 26b, 26c illustrates possible shapes of the inner barrel 34 which is provided with an opening 34a at one end portion thereof.
  • FIG. 26d shows one having the inside formed in a spherical shape.
  • a grinding barrel 8 shown in FIG. 27 has cooling fins 50, 51 formed on the outer surface of an outer barrel 48 and the lid 49 for a long-time grinding operation or for grinding heavy objects.
  • the cooling fins 50, 51 are cooled by surrounding air agitated by the rotation of the grinding barrel 8, whereby a heat produced in the grinding barrel 8 is irradiated to prevent the grinding barrel 8 from being heated.
  • FIGS. 28a, 28b it is supposed that the appearance and the cross-section of the grinding barrel 8 is arbitrary, and a plurality of chambers in an arbitrary shape, for example, rectangle, ellipse, circle or the like are formed in the grinding barrel 8.
  • FIGS. 28a, 28b show, as an example, that a polygonal, for example, rectangular barrel body 8a is divided to form a multitude of sub-chambers 52 as shown in FIG. 28b, each of which is provided with a lid 53.
  • This construction permits individually grinding objects, whereby bruises, caused by collisions, will not be produced on the surface of the ground objects, and accordingly a fine and high-quality grinding can be achieved. It is also possible to accommodate different kinds of objects to be ground in the subchambers 52.
  • the grinding barrel 8 of the present invention may be composed of a plurality of stacked cylindrical barrels 53, 54, as shown in FIGS. 29, 30.
  • FIG. 29 illustrates that a multitude of small cylindrical barrels 55, serving as the sub-chambers, are arranged in a cylindrical barrel 53, and a plurality of the cylindrical barrel 53 are stacked and fastened by fastening bolts 56.
  • FIG. 30 illustrates that a multitude of small cylindrical barrels 57 or spherical barrels 58, serving as the sub-chambers, are arranged in a cylindrical barrel 54, and a plurality of the cylindrical barrels 54 are stacked and fastened by a fastening bolt penetrating the center of the cylindrical barrels 54.
  • the grinding barrel 8, as shown in FIG. 31, may have chambers, each of which is made up of a hemispherical half barrel 61a having a threaded portion and another hemispherical half barrel 61b corresponding to the half barrel 61a which are engaged with each other by the threaded portions to form an internal spherical chamber 63.
  • FIG. 31 illustrates a two-coupled barrel composed of two of the integrated grinding barrels 8.
  • a yet further embodiment of the grinding barrel 8 as shown in FIG. 32 comprises a plurality of long cylindrical grinding barrel bodies 64 having one end 64a in a hemispherical shape and the other end covered with a hemispherical lid 64b.
  • this long cylindrical type of the grinding barrel 8 it is possible to enclose a large number of objects to be ground therein at a time as well as provide a fine grinding for elongated objects which are susceptible to deformation, flexure or the like without such damages.
  • FIG. 33 illustrates a grinding barrel 8 having both ends forced of flat plates 65.
  • a grinding method which is capable of uniformly and precisely grinding objects to be ground in a short time and a grinding apparatus for implementing this method.
  • the grinding method and apparatus is capable of softening shocks produced when the rotation of a grinding barrel is changed between the forward direction and the backward direction to thereby eliminate bruises on the surface of grounded objects; is capable of coping with grinding for a large number of objects to be ground in a small quantity or a heavy-weight or a large-size object to be ground, preventing contacts and collisions between objects to be ground, and enabling a precise grinding; and permits an arbitrary selection of a material, e.g., hard or soft material for the inner construction of a grinding barrel in accordance with the characteristics of objects to be ground and purposes for grinding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP91305712A 1990-06-26 1991-06-25 Grinding method and apparatus Expired - Lifetime EP0463846B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2167542A JP2916937B2 (ja) 1990-06-26 1990-06-26 バレル研磨方法及びその装置
JP167542/90 1990-06-26

Publications (3)

Publication Number Publication Date
EP0463846A2 EP0463846A2 (en) 1992-01-02
EP0463846A3 EP0463846A3 (en) 1992-02-19
EP0463846B1 true EP0463846B1 (en) 1995-06-07

Family

ID=15851640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91305712A Expired - Lifetime EP0463846B1 (en) 1990-06-26 1991-06-25 Grinding method and apparatus

Country Status (4)

Country Link
EP (1) EP0463846B1 (ko)
JP (1) JP2916937B2 (ko)
KR (1) KR960004344B1 (ko)
DE (1) DE69110203T2 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107030537A (zh) * 2017-03-13 2017-08-11 浙江兆丰机电股份有限公司 外圆表面微细螺旋纹梳理工艺

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221842A1 (de) * 2002-05-16 2003-11-27 Roesler Oberflaechentechnik Gm Polierverfahren
DE102013107494A1 (de) * 2013-07-15 2015-01-15 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung und Verfahren zur Randschichtbearbeitung eines Bauteils mit einem gegenüber einer Referenzeinrichtung beweglich gelagerten Behälter
DE102013107486A1 (de) * 2013-07-15 2015-01-15 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Randschichtbearbeitung eines Bauteils in einem Behälter
DE102013107496A1 (de) * 2013-07-15 2015-01-15 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Randschichtbearbeitung eines Bauteils in einem Behälter
DE102013107497B4 (de) * 2013-07-15 2019-08-14 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur nicht-abrasiven Randschichtbearbeitung eines Bauteils in einem Behälter
KR102041077B1 (ko) * 2019-07-26 2019-11-05 김원박 실린더용기 내면 연마장치
CN114012592A (zh) * 2021-11-11 2022-02-08 深圳市华阳通达精密机械有限公司 一种自动研磨抛光机
CN114870956B (zh) * 2022-04-29 2022-12-23 江苏申隆锌业有限公司 一种鳞片状锌粉制造用湿式球磨机
CN114571350B (zh) * 2022-05-07 2022-08-02 成都泰美克晶体技术有限公司 一种晶片用滚磨设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH294446A (de) * 1951-09-04 1953-11-15 Basek Josef Wechselgetriebe mit Planetenrädern.
DE1816133A1 (de) * 1968-12-20 1970-06-25 Tipton Mfg Co Hochleistungsfaehiges Verfahren zur Oberflaechenendbearbeitung
DE2113495A1 (de) * 1971-03-19 1972-09-21 Hans Kuebler Vorm Karl Becht F Schuettelfass-Anordnung
JPS60232865A (ja) * 1984-04-30 1985-11-19 Ietatsu Ono 研磨装置
JPS6195870A (ja) * 1984-10-16 1986-05-14 Tipton Mfg Corp 全自動多機能バレル研磨機
US4615148A (en) * 1985-07-26 1986-10-07 Harper Jr John F Orbital barrel finishing machine and automated system therefor
JPS62140759A (ja) * 1985-12-16 1987-06-24 Akio Kato バレル研摩機用ドラム
DE3711944A1 (de) * 1987-04-09 1988-10-20 Tsugio Takada Trommel-poliervorrichtung
DE3828756A1 (de) * 1988-08-25 1990-03-01 Manfred Bareis Poliermaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107030537A (zh) * 2017-03-13 2017-08-11 浙江兆丰机电股份有限公司 外圆表面微细螺旋纹梳理工艺
CN107030537B (zh) * 2017-03-13 2018-11-27 浙江兆丰机电股份有限公司 外圆表面微细螺旋纹梳理工艺

Also Published As

Publication number Publication date
KR920000433A (ko) 1992-01-29
EP0463846A3 (en) 1992-02-19
DE69110203T2 (de) 1995-10-19
EP0463846A2 (en) 1992-01-02
DE69110203D1 (de) 1995-07-13
JPH0457667A (ja) 1992-02-25
JP2916937B2 (ja) 1999-07-05
KR960004344B1 (ko) 1996-04-02

Similar Documents

Publication Publication Date Title
US5454749A (en) Grinding method and apparatus
EP0463846B1 (en) Grinding method and apparatus
US9550266B2 (en) High speed barrel polishing device
CN110961172B (zh) 试剂冷藏装置
US4361989A (en) Polishing apparatus
RU2001123240A (ru) Способ и аппарат для ультразвуковой дробеструйной обработки деталей на колесе
US3981693A (en) Finishing apparatus
CN1206475C (zh) 微波炉
KR101603081B1 (ko) 대용량 유성식 교반장치
EP2708628B1 (en) Washing machine
KR200495429Y1 (ko) 연마장치용 배럴
JP2977123B2 (ja) 遠心バレル研磨装置用研磨槽
US4461123A (en) Long-travel annular vibratory barrel finishing apparatus for line-processing
US3474574A (en) Grinding device
JP2549933Y2 (ja) 遊星旋回式バレル加工機
RU2226147C2 (ru) Способ и устройства для лаппингования деталей
US4074472A (en) Improved finishing method
GB1405839A (en) Deburring and polishing apparatus
SU1038196A1 (ru) Галтовочное устройство
KR102111893B1 (ko) 휴대폰 소형 부품 착색용 표면처리장치
KR102088641B1 (ko) 휴대폰 소형 부품 착색용 표면처리 배럴 조립체
JP2018176286A (ja) ブラストマシン装置
SU1301665A1 (ru) Устройство дл планетарно-центробежной обработки
CA2003185A1 (en) Polishing apparatus
SU1165556A1 (ru) Вибрационна центробежно-планетарна установка

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19920408

17Q First examination report despatched

Effective date: 19930628

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 69110203

Country of ref document: DE

Date of ref document: 19950713

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990614

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990615

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990617

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990621

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000625

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050625