US3233372A - Surface finishing in high speed gyrating barrels - Google Patents

Surface finishing in high speed gyrating barrels Download PDF

Info

Publication number
US3233372A
US3233372A US279937A US27993763A US3233372A US 3233372 A US3233372 A US 3233372A US 279937 A US279937 A US 279937A US 27993763 A US27993763 A US 27993763A US 3233372 A US3233372 A US 3233372A
Authority
US
United States
Prior art keywords
barrel
workpieces
mass
barrels
finishing
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
US279937A
Other languages
English (en)
Inventor
Kobayashi Hisaminc
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
Application granted granted Critical
Publication of US3233372A publication Critical patent/US3233372A/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
    • 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
    • B24B31/0212—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 the barrels being submitted to a composite rotary movement
    • B24B31/0218—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 the barrels being submitted to a composite rotary movement the barrels are moving around two parallel axes, e.g. gyratory, planetary movement

Definitions

  • This invention relates generally to improvements in finishing technique and more particularly to a method of surface finishing workpieces within a barrel having an equilateral polygonal cross-section gyrating at a high speed.
  • the rotary barrel process is typical of barrel finishing processes known for long time and actually carried out in a variety of fields of the finishing art.
  • a mixture of workpieces to be finished and abrasives which may include admixed therein any suitable lubricant or any suitable surface activator tumbles in a barrel rotating at a relatively low speed about its longitudinal central axis to contact and scrub the workpieces with the abrasives to thereby finish the workpieces.
  • This process consumes a long period of time before the completion of the finishing operation and it is impossible to perform finishing of minute workpieces thereby because a mixture of workpieces and abrasives tumbles due .to its weight alone.
  • Another object of the invention is to provide an improved method of efficiently surface finishing workpieces in a barrel effecting planetary gyration at a high speed in order to utilize a high centrifugal effect.
  • An additional object of the invention is to provide an improved method capable of heavily cutting, abrading polishing and burnishing very minute workpieces such as parts of wrist watches, pen points of fountain pens or small jewels which could not be previously subjected to such actions.
  • the invention resides in a method of surface finishing workpieces, comprising the steps of loading a mixture of the workpiece-s and substantially spherical grains of abrasives in each of a plurality of barrels or drums each having its internal cross-section in the shape of an equilateral polygon, causing said barrels with the loaded mass to gyrate about an axis of a shaft spaced away from the barrels and disposed parallel to the longitudinal axes of all the barrels at a high speed while maintaining said barrels in a fixed orientation, said gyrational movement of the barrels being such that only the free surface layer of said loaded mass flows down successively in the direction of gyration of the barrel without tumbling movement whereby only the workpieces within the free surface layer are surface finished with the abrasives.
  • An apparatus suitable for use in carrying out the method of the invention may preferably comprise at least two barrels or drums each having the internal cross-section in the shape of an equilateral polygon, a mass of workpieces and substantially. spherical grains of abrasives loaded in each of said barrels, a shaft, a pair of spaced rotary discs rigidly secured to said shaft for rotatably supporting said barrels in .symmetry-of-rotation relationship, drive means for effecting gyration of said barrels about the axis of said shaft in one direction, a stationary sprocket wheel device with a plurality of rows of teeth secured to a base block and loosely fitted onto said shaft, a sprocket wheel mounted coaxially to each of said barrels to be operatively coupled with different ones of said rows of teeth on said sprocket wheel device through an endless chain, a tensioning wheel for maintaining the associated endless chain in its tensioned state, said sprocket wheel device said sprocket wheel, said tension
  • FIG. 1 is a diagrammatic sectional view of a prior art rotary drum showing the manner in which a mass loaded in the drum partially flows, while tumbling, in the rotating drum.
  • FIG. 2 is a diagrammatic sectional view of the drum illustrated in FIG. 1 and showing the charge cohered on its internal surface due to the centrifugal effect provided by the drum being rotated at a high speed exceeding its critical speed;
  • FIGURE 3 is a diagrammatic representation useful in explaining the principle of the invention and illustrating, in cross-section, the manner in which a mass loaded in each of the drums having an equilateral polygonal cross-section is positioned in the drum while the drum is gyrating at a high speed and in the direction that the free surface layer of the mass flows within the drum;
  • FIGS. 4 and 5 are diagrammatic cross-sectional views illustrating in more detail the manner in which the mass loaded in the drum illustrated in FIG. 3 flows within the same gyrating at a high speed;
  • FIG. 6 is a front elevational view, partly broken away, of an apparatus constructed in accordance with the teachings of the invention.
  • FIG. 7 is a side elevational view of the apparatus illustrated in FIG. 6;
  • FIG. 8 is a plan view of a mechanism for effecting gyrational movement of a plurality of drums illustrated in FIGS. 6 and 7;
  • FIG. 9 is a graph useful in explaining the results of the invention.
  • the rotary barrel finishing method which is typical of the barrel type well known and widely used for along time is to load a charge including proper proportions of workpieces to be finished, any suitable abrasives, water, and, if desired, a lubricant or a surface activator into a barrel and to slowly rotate the barrel with the mass about its longitudinally central axis with the barrel maintained in its horizontal position. Under these circumstances, the mass within the barrel tends to be raised in the direction that the barrel is rotating.
  • a barrel B is rotating about its longitudinal axis horizontally disposed, in the direction of the arrow r and has loaded therein a suitable amount of a mass C such as that above described.
  • the mass C includes its upper or free surface layer S raised in the direction of rotation r. Due to its weight the free surface layer S tends to slide down along the tilted surface in the direction s opposite to the direction of rotation where by the same flows and tumbles.
  • a sliding layer workpieces and abrasives are rubbed against each other and finished. Water functions to prevent any violent impact between the components of the mass and also any collision of the mass against the internal wall of the barrel.
  • the rotary barrel finished method as above outlined is used to finish very minute workpieces, the same will be only subject to very low pressure or stress which is caused by their contact with the abrasives used, because of their light weight and hence they are only slightly abraded.
  • the thickness removed from the surface of the workpieces was only a few microns. T increase the thickness of the surface removed from the workpiece the barrel may be speeded up. Alternatively, the finishing time may be increased.
  • the finishing methods utilizing rotating and vibrating barrels respectively rely upon an intermittent frictional motion between workpieces and abrasives which form a sliding layer of mass in the barrel, that motion being a tumbling and contacting mot-ion of the mass intermittently efiected within the sliding layer. It will therefore be apparent that such methods are low in efficiency of finishing by a value as high as or even exceeding 90% as compared with the case in which a frictional motion was continuously effected between the workpieces and the abrasives.
  • the force between the workpieces and the abrasives is a pressure under which they collide with each other when they slide down in a sliding layer such as that previously described in conjunction with FIG. 1 and hence such force results principally from their Weights.
  • the invention is based upon the fact that barrels into which workpieces and abrasives are loaded effect planetary gy-ration about an axis of a shaft spaced away from the barrels and disposed in parallel to the longitudinal axes of all the barrels at a speed far exceeding the speed of rotation which was heretofore its upper limit for the purpose of avoiding an excess of the centrifugal effect as previously described in conjunction with FIG. 2.
  • the invention can utilize the centrifugal force amounting up to several hundred times the centrifugal force corresponding to said upper limit for the speed of rotation of the barrel.
  • FIG. 3 of the drawings there is illustrated the principle of the invention.
  • Plural pairs in this case two pairs of barrels or drums B1, B2, B3 and B4 having an equilateral polygonal cross-section, in this case an equilateral hexagonal cross-section, are disposed such that their respective longitudinal axes are positioned at substantially equal angular intervals on a circular cylindrical surface represented by a circle K having a center Z.
  • the barrels are disposed in symmetry-of-rotation relationship. All the barrels are adapted to effect planetary gyration at a high speed about an axis passing through the center Z and parallel to the respective longitudinal axes of the barrels by a drive to bedescribed later.
  • any edge or vortex line of each barrel will depict a locus of circular shape such as a locus L which at a speed on the order of 165/ /D gyrations per minute where D represents the diameter of the circle K or L shown in FIG. 3.
  • the mass C1 accumulated in the upper half portion as viewed in FIG. 3 flows successively into the positions represented by the masses C2, C3 and C4, respectively while the free surface of the mass remains substantially smooth as seen in FIGS. 3-5 rather than undulated as in the rotary driven process shown in FIG. 1.
  • this relative displacement of the mass is effected such that breaking of the mass begins with the free surface portion of the same and proceeds progressively into the interior of the mass whereby the same flows smoothly and is displaced to its next position while the free surface remains smooth.
  • FIGS. 4 and 5 of the drawing there is illustrated by way of example the manner in which the mass C2 in the barrel B2 flows and is displaced to its position represented by the mass C3 in the barrel B3.
  • a stratified zone or layer between lines S1S1' and 82-51 forming the upper layer portion of the mass is moved, as a sliding layer to form another sliding layer S2S2'- S1'-S2" which will be subsequently moved to the next position for the sliding layer. More specifically, as shown in FIG.
  • the free surface S1S1' of the mass C2 is displaced to a line 85-85 through lines 82-52, 53-83 and 84-84 while the surface layer of the mass is sliding in the direction of the arrow s.
  • portions of the mass are brought into the surface layer at the right hand end and other portions are successively moved from the surface layer into the mass at the left hand end.
  • the mass C2 tends to be accumulated on the portion of the interior of the barrel repre sented by the mass C3 during a quarter of the gyration of the barrel with the result that all portions of the mass are uniformly displaced.
  • results of experiments have indicated that the thickness of the sliding layer flowing smoothly in this way or the spacing between the lines S1S1 and S2S1" (see FIG. 4) designated by l corresponds approximately to an eighth of the diameter a of a circle inscribed about the polygonal cross-section of the barrel. Therefore, as in the rotary barrel method, the dimension of a workpiece or abrasive should be less than I for satisfactory results. If a mass includes admixed therewith workpieces or abrasives having their dimensions exceeding I then the latter may be forced out of the sliding layer to collide against the internal wall of the barrel. For this reason, any workpiece or abrasive whose dimension is greater than I should not be used.
  • any workpiece in the form of either a sheet or a wire has been found to be satisfactorily finished according to the invention provided that the same has its maximum length ranging from two times from five times the depth 1 of the sliding layer. It has been found also that a mass comprising workpieces and spherical abrasives less than I in size and even as small as on the order of 0.01 mm. or less can smoothly flow within the aforesaid sliding layer by the action of high centrifugal force without the same cohering to the internal wall of the barrel, whereby the finishing operation is performed with a high efiiciency of finishing.
  • the mass is always drawn toward the outside of a locus such as the locus'K by the high centrifugal efifect and is accumulated in that place without intermittent contacting and jostling occurring between the workpieces and the abrasives.
  • the sliding layer forming the stratified free surface zone of the mass flows in the direction of the arrow s illustrated in FIG. 3.
  • the workpieces and abrasives within the sliding layer effect completely continuous frictional movement but are not separated from each other at all.
  • a mass is preferably loaded into a barrel in an amount on the order of from 50 to 60% by volume of the barrel as in the conventional type of rotary barrel finishing methods and workpieces should be admixed with abrasives in a range of from one to two parts of the abrasive for each part of the workpiece. It is noted that this proportion of the mixture is higher than in the conventional finishing methods. Further, the results of experiments indicated that during one complete gyration of a barrel according to the invention a sliding layer of a mass flows through a distance and in an amount equal to a distance and an amount which a sliding layer of a mass flows while tumbling within a rotating barrel having the same dirnension during complete rotation of the same.
  • any of the rotary barrel finishing methods can actually use the maximum number of rotations of a barrel not exceeding 25 /7r.p.m. where d is the same as that previously defined whereas the present barrel can normally gyrate at /5 r.p.m. where D is the diameter of the circle K shown in FIG. 3. If it is assumed that the barrels have the same dimension in both cases when a locus of any barrel such as the locus K for the barrel B1 (see FIG. 3) always has its average radius equal to approximately 3.3 times the radius of rotation for a rotating barrel from the standpoint of design and construction. This results in a great radius of gyration with which the barrel can gyrate.
  • the pressure appearing between workpieces and abrasives during their flowing movement is enhanced by the high centrifugal effect whereby a finishing operation such as heavily cuttingdown or a polishing operation is greatly improved.
  • the pressure under which workpieces effect continuous frictional movement relative to the abrasives at high speeds is substantially equal to several hundred times the pressure under which workpieces intermittently contact abrasives by the action of their weights within the rotating barrel.
  • the invention permits the barrel to gyrate at a speed at high as desired provided that a device used for carrying out the same has a mechanical strength sufiicient to withstand such high speed of gyration.
  • FIGS. .6, 7 and 8 of the drawings there is illustrated an apparatus suitable for use in practicing the method of the invention as above described.
  • the apparatus illustrated comprises a rigid enclosure 10 including a lower portion of square cross-section 12 hav ing a thick wall, an upper portion covered by a dome shaped cover 14 and a thick horizontal partition 16 for dividing the interior of the enclosure into the lower and upper portions.
  • the dome-shaped cover 14 is provided on its top with a door handle 18 serving to open and close a door (not shown) forming a part of the cover. When the door is open, components to be described are accessible.
  • a pair of rotary discs 20 in opposed relationship and including a plurality of barrel cages 22 rotatably carried therebetween on a circle concentric to the same at substantially equal angular intervals.
  • the apparatus is shown as including four barrel cages or drum cages 22-1, 22-2, 22-3 and 22-4 spaced from each other at an angular distance of 90 degrees but a greater or lesser number of the barrel cages may be used if desired.
  • Each barrel cage 22-1, 22-2, 22-3 or 22-4 is provided on both ends with a pair of trunnions 24-1, 24-2, 24-3 or 24-4 rotatably journalled on the associated vertical discs 20 respectively and includes a barrel or drum having an equilateral polygonal cross-section B1, B2, B3 or B4 coaxially disposed therein for rotation with the same.
  • the pair of rotary discs 20 are secured to a main horizontal shaft 26 rotatably supported at both ends by a pair of bearings 28 which, in turn, are rigidly secured to the horizontal partition 16. Mounted on the horizontal shaft 26 on one end portion, for example, the lefthand end portion as viewed in FIG.
  • a multi-grooved pulley 30 which, in turn, is operativeiy coupled through a plurality of endless belts 32 to a multigrooved pulley 34 rigidly secured to a driving shaft on an electric motor 36 rigidly secured to the bottom of the lower portion 12 of the enclosure 10.
  • one of the trunnions 24 for each barrel cage 22 can include a sprocket wheel 38 mounted on its extension projecting beyond the associated rotary disc 20 in this case the righthand disc. Then the sprocket wheels 38 are operatively coupled through the respective endless chains 4%) to different ones of the plurality of sprocket wheels composing a sprocket wheel device 42 loosely fitted onto the main shaft and supported by base block 44, which, in turn, is rigidly secured to the horizontal partition 16. It is noted that the sprocket Wheels 38 for the barrels are the same both in number and diameter as the central sprocket wheels 42.
  • one tensioning sprocket wheel 46 is rotatably mounted on the rotary disc 20 at any suitable position to engage each chain 40. It is noted that the central sprocket wheel assembly 42 is rigidly secured to the base block 44 on the horizontal partition 16 and loosely fitted onto 8 the shaft 26 independently of the rotational movement of the latter.
  • the arrangement thus far described is operated as follows:
  • the energization of the motor 36 causes the rotational movement of the rotary discs 20 in one direction, for example, in the direction of arrow 1' illustrated in FIG. 8 through the components 34, '32, '30 and 26.
  • the cages 22 and hence barrels B will be rotated in the counterclockwise direction or in the direction opposite to the direction in which the discs are rotated with respect to the discs by virtue of the endless chains 40 connecting the stationary central sprocket wheels 42 to the associated sprocket wheels 38.
  • the cages and the barrels will effect one complete rotational movement relative to the supporting discs 26 during one complete rotational movement of the same.
  • the barrel can effect gyrational movement about the axis of the main shaft 26.
  • each barrel is maintained in the fixed bearings.
  • the barrels used in the invention have an equilateral polygonal cross-section for the reason which will be apparent later and it has been found that a hexagonal cross-section is suitable for a smaller barrel including a pair of opposite sides of its polygonal cross-section separated from each other by an inside length less than 200 mm., and an octagonal crosssection suitable for a larger barrel greater than 200 mm. in an inside length between a pair of opposite sides of its polygonal cross-section produces satisfactory results.
  • the cross-section of the barrel means the internal cross-section of the same. Therefore, if desired, a barrel may be advantageously used having any desired outer configuration such as a circularly cylindrical surface so long as it has an internal cross-section of an equilateral polygon.
  • At least two barrel cages can preferably be mounted on the rotary discs with the trunnions for the cages disposed on a circle having its center on the axis of the main shaft 26 at substantially equal angular intervals, that is, in symmetry of rotation relationship.
  • the charge should be loaded in the respective barrels in amounts as equal as possible.
  • the apparatus illustrated in FIGS. 6, 7 and 8 was operated to surface finish needle rollers each having a diameter of 2.5 mm. and a length of 1.7 mm., with abrasives preshaped in spheres Whose diameter was 15 mm.
  • the results are illustrated in FIG. 9 wherein the abscissa represents the treading time in hours and the ordinate the polished-out thickness in thousands of one millimeter.
  • a curve a illustrates the results of the invention and curves b and 0 were obtained with the use of vibratory and rotary barrels respectively. From the curves shown in FIG. 9, it can be seen that the inven tion can improve the finishing efficiency over the conventional vibratory and rotary barrel methods by a factor of several tens. The smaller the workpieces the higher this factor will be and in fact the value of the factor may reach to approximately a thousand.
  • the invention is advantageous in that very thin articles such as diaphragm sectors for photographic cameras which may be 0.04 mm. thick and the second hands of wrist watches can be satisfactorily finished without the development of strains in the articles because of the frictional finishing operation not accompanied by tumbling movement.
  • the invention is also notable in that the requirements for selecting the type of abrasives used are largely alleviated. In other words, all the types of finishing operations involving heavy cutting and polishing require only the use of spherical type bonded chip stones or nearly spherical grains of abrasives for the reason that no tumbling movement is effected in practicing the present method. It is well known that the spherical chip stones or nearly spherical shape of grains are most suitable for flowing movements at higher speeds.
  • the conventional type of rotary or vibratory barrel methods has predominantly used abrasives pres-haped into a triangular or rhombic shape for the purpose of suppressing tumbling movement of a sliding layer as previously described to thereby prevent reduction or loss because of jostling and finishing forces. It has been found that the use of triangular or rhombic abrasives in practicing the present invention results in a sharp decrease in the operational efilciency due to their resistances to flowing movement of the abrasives and articles to be finished and thereby to the dilficulty of effecting smooth flowing movement.
  • chip stones or abrasives used in the invention should be of spherical or nearly spherical shape, the selection of abrasives will have been completed by selecting only the material and size of the same in accordance with the particular application.
  • a method of surface finishing minute workpieces comprising providing at least one elongated drum having an internal cross-sectional shape of an equilateral polygon having from five to eight sides, filling about one half of said elongated drum with a mixture of the workpieces and substantially spherical grains of abrasives, and rubbing the grains of abrasives and workpieces in only a surface layer of the mixture together and bringing successive portions of the mixture into the surface layer While successively moving other portions from the surface layer into the remainder of the mixture and keeping the free surfaces of the mixture substantially smooth by rotating the drum about an axis parallel to the direction of elongation of the drum and spaced laterally of the drum at a speed of rotation such that the centrifugal force is greater than the force of gravity and while holding the drum in the same orientation with respect to a horizon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US279937A 1962-05-19 1963-05-13 Surface finishing in high speed gyrating barrels Expired - Lifetime US3233372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2068262 1962-05-19

Publications (1)

Publication Number Publication Date
US3233372A true US3233372A (en) 1966-02-08

Family

ID=12033934

Family Applications (1)

Application Number Title Priority Date Filing Date
US279937A Expired - Lifetime US3233372A (en) 1962-05-19 1963-05-13 Surface finishing in high speed gyrating barrels

Country Status (3)

Country Link
US (1) US3233372A (de)
CH (1) CH429493A (de)
GB (1) GB1047703A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341979A (en) * 1965-01-19 1967-09-19 Leo R Davidson Machine for mechanically finishing workpieces
US3513604A (en) * 1966-11-26 1970-05-26 Tipton Mfg Co High speed surface finishing method
US3823512A (en) * 1971-03-12 1974-07-16 Tipton Mfg Co Automatic centrifugal barrel finishing apparatus
US4505072A (en) * 1982-09-17 1985-03-19 Shikishima Tipton Manufacturing Co., Ltd. Centrifugal rotary barrel-type finishing machine
DE3502636A1 (de) * 1984-01-27 1985-08-01 Tipton Mfg. Corp., Nagoya Fliehkrafttrommelgleitschleifmaschine und verfahren zu deren anwendung
DE3514175A1 (de) * 1984-10-16 1986-04-17 Tipton Mfg. Corp., Nagoya Fliehkraft-trommelbearbeitungsmaschine
US4776135A (en) * 1987-01-15 1988-10-11 Elwood F. Thum, III System for deburring of articles
US4949510A (en) * 1987-12-28 1990-08-21 Tipton Manufacturing Corporation Full-automatic multi-function barrel finishing machine
US20020078813A1 (en) * 2000-09-28 2002-06-27 Hoffman Steve E. Saw blade
US6599176B2 (en) * 2001-09-27 2003-07-29 Mikronite Technologies Group Inc. High speed centrifugal processor
US20030176150A1 (en) * 2001-09-27 2003-09-18 Hoffman Steve E. Tool fixtures for use in rotational processing
US6733375B2 (en) 2001-09-27 2004-05-11 Mikronite Technologies Group Inc. Horizontal finishing machine
WO2003026829A3 (en) * 2001-09-27 2004-12-23 Mikronite Technologies Group I System for high speed centrifugal welding
US6875081B2 (en) 2001-09-27 2005-04-05 Mikronite Technologies Group Inc. Method of manufacturing a tool using a rotational processing apparatus
US20050279430A1 (en) * 2001-09-27 2005-12-22 Mikronite Technologies Group, Inc. Sub-surface enhanced gear
US20060018782A1 (en) * 2000-09-28 2006-01-26 Mikronite Technologies Group, Inc. Media mixture for improved residual compressive stress in a product
US20060046620A1 (en) * 2004-08-26 2006-03-02 Mikronite Technologies Group, Inc. Process for forming spherical components
CN106271899A (zh) * 2016-08-24 2017-01-04 杭州持正科技股份有限公司 一种对渗钒销轴表面进行抛光的抛光工艺

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805245A (en) * 1905-02-18 1905-11-21 Draper Co Apparatus for polishing spinning-rings.
US986072A (en) * 1910-11-04 1911-03-07 Robert Lungstras Process of cleaning gloves of kid or leather.
US1144272A (en) * 1912-05-09 1915-06-22 Abraham Lincoln West Compensating drive for concentric cylinders or mills.
US1453120A (en) * 1922-04-15 1923-04-24 Beaver Hermann Leroy Steel peb
US2174880A (en) * 1938-10-05 1939-10-03 Joseph M Hilbish Method of cleaning elongated metal shapes
US2387095A (en) * 1944-02-14 1945-10-16 Elbert M Shideler Centrifugal machine
US2561037A (en) * 1945-08-14 1951-07-17 William T Stanley Finishing method and apparatus
US2721426A (en) * 1952-01-24 1955-10-25 Vincent Charles Bassett Shaking barrel apparatus for polishing or cleaning small articles
US2807020A (en) * 1954-12-16 1957-09-17 Erie Resistor Corp Method of making capacitors
US2809473A (en) * 1955-02-15 1957-10-15 Concrete Grinding Corp Apparatus for smoothing the surfaces of articles
US2937814A (en) * 1953-05-28 1960-05-24 Ct D Etudes Et De Rech S De L Ball-crusher
FR1221424A (fr) * 1958-03-26 1960-06-01 Procédé et appareil pour polir (ou finir) les surfaces d'articles
US2994164A (en) * 1960-07-08 1961-08-01 American Optical Corp Method and apparatus for simultaneously grinding lenses
US3038851A (en) * 1959-12-03 1962-06-12 Udylite Corp Barrel plating machine
US3061209A (en) * 1962-10-30 Abrasive grinding balls
US3078623A (en) * 1960-05-13 1963-02-26 William T Stanley Finishing apparatus and method
US3094818A (en) * 1960-11-02 1963-06-25 Noble E Price Process and apparatus for shaping and polishing gem stone particles

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061209A (en) * 1962-10-30 Abrasive grinding balls
US805245A (en) * 1905-02-18 1905-11-21 Draper Co Apparatus for polishing spinning-rings.
US986072A (en) * 1910-11-04 1911-03-07 Robert Lungstras Process of cleaning gloves of kid or leather.
US1144272A (en) * 1912-05-09 1915-06-22 Abraham Lincoln West Compensating drive for concentric cylinders or mills.
US1453120A (en) * 1922-04-15 1923-04-24 Beaver Hermann Leroy Steel peb
US2174880A (en) * 1938-10-05 1939-10-03 Joseph M Hilbish Method of cleaning elongated metal shapes
US2387095A (en) * 1944-02-14 1945-10-16 Elbert M Shideler Centrifugal machine
US2561037A (en) * 1945-08-14 1951-07-17 William T Stanley Finishing method and apparatus
US2721426A (en) * 1952-01-24 1955-10-25 Vincent Charles Bassett Shaking barrel apparatus for polishing or cleaning small articles
US2937814A (en) * 1953-05-28 1960-05-24 Ct D Etudes Et De Rech S De L Ball-crusher
US2807020A (en) * 1954-12-16 1957-09-17 Erie Resistor Corp Method of making capacitors
US2809473A (en) * 1955-02-15 1957-10-15 Concrete Grinding Corp Apparatus for smoothing the surfaces of articles
FR1221424A (fr) * 1958-03-26 1960-06-01 Procédé et appareil pour polir (ou finir) les surfaces d'articles
US3038851A (en) * 1959-12-03 1962-06-12 Udylite Corp Barrel plating machine
US3078623A (en) * 1960-05-13 1963-02-26 William T Stanley Finishing apparatus and method
US2994164A (en) * 1960-07-08 1961-08-01 American Optical Corp Method and apparatus for simultaneously grinding lenses
US3094818A (en) * 1960-11-02 1963-06-25 Noble E Price Process and apparatus for shaping and polishing gem stone particles

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341979A (en) * 1965-01-19 1967-09-19 Leo R Davidson Machine for mechanically finishing workpieces
US3513604A (en) * 1966-11-26 1970-05-26 Tipton Mfg Co High speed surface finishing method
US3823512A (en) * 1971-03-12 1974-07-16 Tipton Mfg Co Automatic centrifugal barrel finishing apparatus
US4505072A (en) * 1982-09-17 1985-03-19 Shikishima Tipton Manufacturing Co., Ltd. Centrifugal rotary barrel-type finishing machine
DE3502636A1 (de) * 1984-01-27 1985-08-01 Tipton Mfg. Corp., Nagoya Fliehkrafttrommelgleitschleifmaschine und verfahren zu deren anwendung
US4665661A (en) * 1984-01-27 1987-05-19 Tipton Manufacturing Corporation Centrifugal barrel finishing method
DE3514175A1 (de) * 1984-10-16 1986-04-17 Tipton Mfg. Corp., Nagoya Fliehkraft-trommelbearbeitungsmaschine
US4638600A (en) * 1984-10-16 1987-01-27 Lipton Manufacturing Corporation Multi-function work finshing machine using barrel containers
US4776135A (en) * 1987-01-15 1988-10-11 Elwood F. Thum, III System for deburring of articles
US4949510A (en) * 1987-12-28 1990-08-21 Tipton Manufacturing Corporation Full-automatic multi-function barrel finishing machine
US20020078813A1 (en) * 2000-09-28 2002-06-27 Hoffman Steve E. Saw blade
US20060018782A1 (en) * 2000-09-28 2006-01-26 Mikronite Technologies Group, Inc. Media mixture for improved residual compressive stress in a product
US6599176B2 (en) * 2001-09-27 2003-07-29 Mikronite Technologies Group Inc. High speed centrifugal processor
US20030176150A1 (en) * 2001-09-27 2003-09-18 Hoffman Steve E. Tool fixtures for use in rotational processing
US6733375B2 (en) 2001-09-27 2004-05-11 Mikronite Technologies Group Inc. Horizontal finishing machine
WO2003026829A3 (en) * 2001-09-27 2004-12-23 Mikronite Technologies Group I System for high speed centrifugal welding
US6863207B2 (en) 2001-09-27 2005-03-08 Mikronite Technologies Group Inc. System for high speed centrifugal welding
US6875081B2 (en) 2001-09-27 2005-04-05 Mikronite Technologies Group Inc. Method of manufacturing a tool using a rotational processing apparatus
US20050279430A1 (en) * 2001-09-27 2005-12-22 Mikronite Technologies Group, Inc. Sub-surface enhanced gear
US7040209B2 (en) 2001-09-27 2006-05-09 Mikronite Technologies, Inc. Tool fixtures for use in rotational processing
US20060046620A1 (en) * 2004-08-26 2006-03-02 Mikronite Technologies Group, Inc. Process for forming spherical components
US7273409B2 (en) 2004-08-26 2007-09-25 Mikronite Technologies Group, Inc. Process for forming spherical components
CN106271899A (zh) * 2016-08-24 2017-01-04 杭州持正科技股份有限公司 一种对渗钒销轴表面进行抛光的抛光工艺

Also Published As

Publication number Publication date
GB1047703A (en) 1966-11-09
CH429493A (de) 1967-01-31

Similar Documents

Publication Publication Date Title
US3233372A (en) Surface finishing in high speed gyrating barrels
US3513604A (en) High speed surface finishing method
US5355638A (en) Traction drive centrifugal finisher
US3611638A (en) Finishing machine
US3013365A (en) Free grain polishing process and apparatus
JPS6195870A (ja) 全自動多機能バレル研磨機
US2218353A (en) Method and machine for polishing articles
US2809473A (en) Apparatus for smoothing the surfaces of articles
JP5868693B2 (ja) 光学素子製造装置及び製造方法
US3562962A (en) Grinding apparatus
JPWO2013125491A1 (ja) 遠心バレル研磨装置及び遠心バレル研磨方法
US4807403A (en) Rotating barrel finishing method under heavy resultant force
JP2916937B2 (ja) バレル研磨方法及びその装置
US20040043706A1 (en) Method and apparatus for polishing and planarization
US2945330A (en) Apparatus for surfacing glass
US2422786A (en) Tumbling mill and method of tumbling
US1995676A (en) Lens surfacing machine
GB2070986A (en) Apparatus for the shear-force processing of material placed in rotatable barrels
JPH068131A (ja) 回転バレル研磨機及び研磨方法
US2387141A (en) Method of making piezoelectric crystal structures
US3020682A (en) Poishing machine for balance wheels
US3561166A (en) Apparatus for polishing samples
JPS6043270B2 (ja) バレル研磨方法および研磨機
JPH01257561A (ja) 全面球形連続型研磨シリンダーを装備したバレル研磨装置
SU886986A1 (ru) Вибромельница