US3848373A - Method for the treatment of workpiece surfaces - Google Patents

Method for the treatment of workpiece surfaces Download PDF

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Publication number
US3848373A
US3848373A US00226691A US22669172A US3848373A US 3848373 A US3848373 A US 3848373A US 00226691 A US00226691 A US 00226691A US 22669172 A US22669172 A US 22669172A US 3848373 A US3848373 A US 3848373A
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US
United States
Prior art keywords
workpieces
particles
polishing means
container
shell
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
US00226691A
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English (en)
Inventor
O Pletscher
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.)
Gebrueder Pletscher AG
Original Assignee
Gebrueder Pletscher AG
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 Gebrueder Pletscher AG filed Critical Gebrueder Pletscher AG
Priority to US05/509,106 priority Critical patent/US3948003A/en
Application granted granted Critical
Publication of US3848373A publication Critical patent/US3848373A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • ABSTRACT A method of treating the surfaces of workpieces by means of a mass of smooth-surface or abrasive particles' which impinge upon the workpiece surface, comprising the steps of placing the particles into a state of free fall, and in the presence of a friction-reducing medium causing the particles to impact upon the surface of the workpiece.
  • the present invention relates to a new and improved method of treating, especially finishing the surfaces of workpiece by means of a mass of smooth-surface or abrasive particles which impinge upon the workpiece surface.
  • Still a further significant and more specific object of this invention is to provide a new and improved method for increasing the economies in workpiece finishing operations by rapid and intensive treatment of the workpieces until reaching the desired surface quality, and especially devising a procedure conducive for assembly-line production systems with uniform quality of the treated workpieces and hence opening the way for completely automated operations.
  • Yet a further significant object of the present invention relates to a new and improved method of treating the surfaces of workpieces in an extremely reliable and economical manner, affording uniform surface quality of the treated workpieces.
  • this work pressure is derived from the reboundless impact of the particles against'the work surface.
  • the reboundless deflection or conversion of the falling movement of the particles into a sliding movement there prevails the required surface compression during the sliding phase.
  • This shell is provided at its inner surface with entrainment means for the particles and at the same time also forms a trough for receiving the medium, for instance a liquid lubricant or lubricating agent.
  • a further aspect of the development of this invention relates to a preferred use of the previously described inventive method for polishing the surfaces of workpieces with the use of spherical or sphere-like particles or pellets.
  • FIG. 1 illustrates an end face of a cylindrical shell or drum of inventive workpiece treatment equipment, the remaining structure of which has not been depicted in FIG. 1, and which end face would be seen upon removal of the infeed mechanism;
  • FIG. 2 schematically illustrates the end face of a prismatic shell or drum which in cross-section is triangularshaped, the remaining details of the finishing equipment also having not been particularly illustrated in this Figure;
  • FIG. 3 illustrates the shell construction of FIG. 2 in a different rotational position
  • FIG. 4 is an axial sectional view through the infeed mechanism which can be coupled with the end face of the shell or drum of FIG. 1;
  • FIG. 5 is a schematic view illustrating further details of the inventive treatment equipment.
  • FIG. 1 the cylindrical shell or drum, designated in its entirety by reference numeral 1, is hidden behind a flange 2 which, just as the case for the flange mounted at the other end of the shell 1 and which is not visible in the illustration of FIG. 1, serves to connect together theshell with a number of such units and with an end closure mechanism.
  • the shell or drum 1 is rotatably mounted upon'support rolls for revolving movement about its own axis, and specifically advantageously in such a manner that the shell axis is inclined with regard to the horizontal as previously considered.
  • the inner surface of the shell 1 is lined with a coating or covering 3 formed of rubber, plastic, wood or some other suitable material, this covering 3 being provided with a rib or grooving arrangement extending approximately in the lengthwise direction of the shell 1 and formed by the depressions in the form of grooves or troughs 4 and the raised portions in the form of ribs or protruberences 5 for instance.
  • the infeed end of the shell arrangement which, as stated, can be assembled together from a number of such shell sections, has arranged in front thereof an infeed mechanism of the type depicted in greater detail in FIG. 4.
  • This infeed mechanism comprises an angled or flexed infeed pipe or conduit 6 which is stationarily fixed in any suitable way, such angled infeed conduit 6 engaging with play into the neighboring end of the shell 1 enclosed by the shell flange 2.
  • the infeed conduit 6 carries a contact or slip ring 7 which surrounds such infeed conduit 6. Now this contact ring 7, with the aid of screws 9 (only one of which is visible in the drawing) piercingly extending through a flange 8 of the infeed conduit 6, is likewise fixedly retained against rotation.
  • the latter forms a tub-like trough or vat 16 (FIG. 4) for the reception of the friction-reducing medium, for instance in the form of a liquid lubricant which, as also is the case for the particles 18, distributes itself throughout the entire length of the shell.
  • the particles which may be in the form of spheres, pellets, stones, granulates, or so forth, are upwardly entrained through a certain angle of rotation by the entrainment means formed by the grooves 4 and the ribs 5 which in the exemplary embodiment together with the shell form a particle elevating or lifting means and specifically as a function of the properties of the inner grooving and rib arrangement of the shell, the magnitude or size of the particles and the centrifugal force acting upon such particles.
  • the workpieces are also entrained by the shell, specifically by the aforedescribed grooving and rib arrangement, however only to a relatively slight degree, since after traveling through a small angular rotation these workpieces will roll or tumble back down.
  • the workpieces 19 are subjected to a continuous revolving or turning movement always at the lower region of the shell, which also constitutes the particle inlet region to the aforesaid lifting means so that they are subjected to the falling stream of particles which descend from the top towards the bottom of the shell, the upper or top shell region essentially defining the discharge location for the particles from the particle lifting or elevating means.
  • the drawing illustrates the presence of such falling particle stream which encompasses a considerable proportion of the inner width of the shell and which treats or finishes the surface of the workpieces from all sides in the already described manner.
  • contact of the workpieces with the particles located at the lower region of the shell I also contributes to the treatment or finishing effect inasmuch as there is present the continuous rolling back of the workpieces 19 upon the actual bed formed by the particles 18.
  • the friction-reducing medium which contacts the particles 18 and the workpieces 19 also plays a considerable role.
  • the workpieces With the axis of the shell inclined with regard to the horizontal the workpieces additionally experience a progressive feed or advancing movement in the direction of the lowermost or lower situated end of the shell 1 until they depart in a finished processed or treated condition from the just-mentioned location of the shell.
  • the feed velocity is, of course, among other things a function of the angle of inclination.
  • any losses in the liquid medium can be made-up by a suitable dosing pump 21, for instance operating intermittently or continuously as a function of time, this dosing pump 21 feeding its make-up liquid into the main stream of recycled medium conveyed back by the feed pump 20 to the inlet side of the equipment.
  • the closing pump 21 is especially then useful when working with a multi-component medium,
  • the particles leaving the outlet side or end 24 of the system also can be recycled in any convenient fashion through for instance the schematically indicated conveyor or conduit system 23 back to the inlet side 25 of the system.
  • Treatment or finishing equipment of the previously described type appear at first blush to differ only slightly from the previously mentioned rotating vessels.
  • the rotating shell is not used at all as a container for the reception and circulation of a large mass of particles, rather is employed to carry out a multiplicity of functions in the form of a lifting or elevator mechanism for producing a free falling stream of particles, as a receiving mechanism or receiver for the rotatable support of the workpieces, and finally as a mechanism for receiving and delivering the medium, none of which functions are inspired by or derived from the concepts 6 of the state-of-the-art rotating vessels or containers. Nothwithstanding a superficial outward similarity the prior art rotating vessels and the treatment equipment of this invention are basically and fundamentally different, particularly as concerns their construction, mode of operation and cooperative interrelationship of the hardware.
  • the medium may contain a'cleaning agent and can be preferably utilized in a liquid state.
  • losses for instance owing to entrainment of quantities of the medium adhering to the workpieces, by vaporization, and so forth, can be intermittently or advantageously continuously made-up by the introduction of the medium to the infeed end of the shell. This can of course occur to such a degree that there is realized an intensified throughflow of medium through the shell, whereby the inherent selfcleaning effect present in such equipment is further intensified.
  • the medium as well as also the particles can be recycled back to the inlet end ofthe shell.
  • its composition can be controlled and maintained constant, for instance with the aid of suitable dosing pumps controlled as a function of time or in another suitable manner, as exemplified by the closing pump 21 of FIG. 5.
  • the relatively small requirement of particles which actively partic-ipate in the working process generally leads to a considerable saving in drive power requirements, in particular however also when carrying out the aforediscussed recycling operation.
  • the medium can contain additives having special functions and for realizing special. effects, for instance dying, dull finishing, just to mention a few.
  • an agent for instance, silicone, for preventing the formation of foam and, if desired, also an emulsifying agent.
  • a method of treating the surfaces of workpieces comprising the steps of:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US00226691A 1971-02-22 1972-02-16 Method for the treatment of workpiece surfaces Expired - Lifetime US3848373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/509,106 US3948003A (en) 1971-02-22 1974-09-25 Apparatus for the treatment of workpiece surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH252271A CH538333A (de) 1971-02-22 1971-02-22 Verfahren zum Bearbeiten der Oberfläche von Werkstücken, Einrichtung zur Durchführung des Verfahrens und Anwendung desselben

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/509,106 Division US3948003A (en) 1971-02-22 1974-09-25 Apparatus for the treatment of workpiece surfaces

Publications (1)

Publication Number Publication Date
US3848373A true US3848373A (en) 1974-11-19

Family

ID=4235673

Family Applications (1)

Application Number Title Priority Date Filing Date
US00226691A Expired - Lifetime US3848373A (en) 1971-02-22 1972-02-16 Method for the treatment of workpiece surfaces

Country Status (11)

Country Link
US (1) US3848373A (fr)
AT (1) AT310607B (fr)
AU (1) AU466352B2 (fr)
CA (1) CA972161A (fr)
CH (1) CH538333A (fr)
DE (2) DE2205784C3 (fr)
FR (1) FR2126279B1 (fr)
GB (1) GB1379621A (fr)
HU (1) HU168971B (fr)
IT (1) IT947551B (fr)
NL (1) NL7201897A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128789A (en) * 1975-04-01 1976-11-09 Tipton Mfg Corp Cylindrical barrel tank for fluidity- processing and its manufacturing method
US4795496A (en) * 1985-01-31 1989-01-03 Murata Manufacturing Co., Ltd. Method of removing adherent foreign matter from work pieces
US4818333A (en) * 1987-08-03 1989-04-04 Rem Chemicals, Inc. Metal surface refinement using dense alumina-based media
WO1994012284A1 (fr) * 1992-11-30 1994-06-09 Massachusetts Institute Of Technology Nettoyage et fini d'un moule en ceramique
US5829131A (en) * 1997-11-21 1998-11-03 Chrysler Corporation Method of making camshaft lobes
US20070107217A1 (en) * 2005-05-31 2007-05-17 Mtu Aero Engines Gmbh Method for surface blasting of integrally bladed rotors
CN100446925C (zh) * 2004-10-11 2008-12-31 宋杰 精制球石生产方法
CN106735236A (zh) * 2016-12-06 2017-05-31 江苏精研科技股份有限公司 金属注射成型后处理滚光工艺
CN108890439A (zh) * 2018-09-09 2018-11-27 合肥安信通用阀片制造有限公司 一种滚筒式阀片光饰机
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
US11260494B2 (en) * 2018-05-28 2022-03-01 Best Finishing S.R.L. Devices for surface finishing of parts

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO793529L (no) * 1979-11-02 1981-05-05 Erik Holger Hansen Fremgangsmaate og apparat for aa tilintetgjoere informasjoner paa filmkort.
US4691400A (en) * 1983-06-09 1987-09-08 Arneson Howard M Article buffing apparatus and method
US4800605A (en) * 1983-06-09 1989-01-31 Arneson Howard M Buffing apparatus
US4566144A (en) * 1983-06-09 1986-01-28 Arneson Howard M Apparatus for buffing articles
CN104416636B (zh) * 2013-08-27 2017-08-29 中集集团集装箱控股有限公司 去除竹筒表面竹青的方法及设备

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU237633A1 (ru) * Способ вибрационного снятия окалины и плотных окисных пленок
US2416504A (en) * 1945-01-03 1947-02-25 Gulf Research Development Co Prevention of foaming of hydrocarbon oils
GB751458A (en) * 1953-09-29 1956-06-27 American Cyanamid Co Improvements relating to grinding media
US2955305A (en) * 1957-04-12 1960-10-11 Co Bartlett & Snow Co Sprue cleaning mill
GB857781A (en) * 1956-03-27 1961-01-04 Roto Finish Ltd Improved method and means for barrel finishing
US3161997A (en) * 1960-08-10 1964-12-22 Gunther W Balz Finishing and polishing method
US3395869A (en) * 1965-02-25 1968-08-06 Dominion Eng Works Ltd Structure for large diameter grinding mill
US3543452A (en) * 1968-03-01 1970-12-01 Ibm Finishing process for metallic surfaces
US3693639A (en) * 1969-10-27 1972-09-26 Hockley Chemical Co Ltd Apparatus for treating articles with liquid treatment media

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE615438C (de) * 1935-07-04 Charles Senaud Poliertrommel fuer Silbergeschirr
US3014315A (en) * 1961-12-26 Gravel washer
BE554164A (fr) *
US1946440A (en) * 1933-11-17 1934-02-06 Bantam Ball Bearing Company Apparatus and method of finishing rollers
GB516457A (en) * 1938-06-30 1940-01-02 Anthony Ralph Lucas Improvements in and relating to rumbles
US2523258A (en) * 1947-06-06 1950-09-19 Ransohoff Inc N Continuous feed tumbling mill
GB724438A (en) * 1953-03-09 1955-02-23 Emil Podszus Device for flattening and rolling metal and other powders
US3431684A (en) * 1966-10-27 1969-03-11 Mcdowell Wellman Eng Co Rotary abrading device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU237633A1 (ru) * Способ вибрационного снятия окалины и плотных окисных пленок
US2416504A (en) * 1945-01-03 1947-02-25 Gulf Research Development Co Prevention of foaming of hydrocarbon oils
GB751458A (en) * 1953-09-29 1956-06-27 American Cyanamid Co Improvements relating to grinding media
GB857781A (en) * 1956-03-27 1961-01-04 Roto Finish Ltd Improved method and means for barrel finishing
US2955305A (en) * 1957-04-12 1960-10-11 Co Bartlett & Snow Co Sprue cleaning mill
US3161997A (en) * 1960-08-10 1964-12-22 Gunther W Balz Finishing and polishing method
US3395869A (en) * 1965-02-25 1968-08-06 Dominion Eng Works Ltd Structure for large diameter grinding mill
US3543452A (en) * 1968-03-01 1970-12-01 Ibm Finishing process for metallic surfaces
US3693639A (en) * 1969-10-27 1972-09-26 Hockley Chemical Co Ltd Apparatus for treating articles with liquid treatment media

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128789A (en) * 1975-04-01 1976-11-09 Tipton Mfg Corp Cylindrical barrel tank for fluidity- processing and its manufacturing method
US4795496A (en) * 1985-01-31 1989-01-03 Murata Manufacturing Co., Ltd. Method of removing adherent foreign matter from work pieces
US4818333A (en) * 1987-08-03 1989-04-04 Rem Chemicals, Inc. Metal surface refinement using dense alumina-based media
WO1994012284A1 (fr) * 1992-11-30 1994-06-09 Massachusetts Institute Of Technology Nettoyage et fini d'un moule en ceramique
US5829131A (en) * 1997-11-21 1998-11-03 Chrysler Corporation Method of making camshaft lobes
CN100446925C (zh) * 2004-10-11 2008-12-31 宋杰 精制球石生产方法
US20070107217A1 (en) * 2005-05-31 2007-05-17 Mtu Aero Engines Gmbh Method for surface blasting of integrally bladed rotors
CN106735236A (zh) * 2016-12-06 2017-05-31 江苏精研科技股份有限公司 金属注射成型后处理滚光工艺
US11260494B2 (en) * 2018-05-28 2022-03-01 Best Finishing S.R.L. Devices for surface finishing of parts
CN108890439A (zh) * 2018-09-09 2018-11-27 合肥安信通用阀片制造有限公司 一种滚筒式阀片光饰机
CN108890439B (zh) * 2018-09-09 2021-01-05 合肥安信通用阀片制造有限公司 一种滚筒式阀片光饰机
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

Also Published As

Publication number Publication date
DE2205784B2 (de) 1979-06-28
FR2126279B1 (fr) 1973-06-29
GB1379621A (en) 1975-01-02
DE2265282A1 (de) 1977-07-07
CH538333A (de) 1973-06-30
AU3920172A (en) 1973-08-23
HU168971B (fr) 1976-08-28
IT947551B (it) 1973-05-30
CA972161A (en) 1975-08-05
DE2205784C3 (de) 1980-02-28
AU466352B2 (en) 1973-08-23
NL7201897A (fr) 1972-08-24
AT310607B (de) 1973-10-10
DE2205784A1 (fr) 1972-08-31
FR2126279A1 (fr) 1972-10-06

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