US3440770A - Device for polishing specimens - Google Patents

Device for polishing specimens Download PDF

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Publication number
US3440770A
US3440770A US612997A US3440770DA US3440770A US 3440770 A US3440770 A US 3440770A US 612997 A US612997 A US 612997A US 3440770D A US3440770D A US 3440770DA US 3440770 A US3440770 A US 3440770A
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US
United States
Prior art keywords
wheel
specimen
specimens
polishing
rotation
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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
US612997A
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English (en)
Inventor
Jacques Klein
Bernard Mansard
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Commissariat a lEnergie Atomique CEA
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Filing date
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Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
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Publication of US3440770A publication Critical patent/US3440770A/en
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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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
    • B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor

Definitions

  • the polishing device comprises a rotary disc covered with abrasive.
  • the specimens are each retained and driven in rotation by a wheel rotatably mounted on a stationary plate, the wheels being in frictionally driven contact With a cone which is concentric with the rotary polishing disc.
  • This invention is directed to a device for polishing specimens and is more specifically concerned with polishing devices of the type comprising a rotary polishing disc having a flat abrasive face at right angles to its axis of rotation and comprising a substantially cylindrical plate for retaining specimens to be polished.
  • the present invention is directed to the design concept of a polishing device which meets practical requirements more effectively than comparable devices of the prior art, especially insofar as it ensures a uniform movement of rotation of the specimen without any attendant danger of jamming, this result being achieved only by the use of simple mechanisms which do not interfere with the positioning and removal of specimens.
  • the point last mentioned is important since such operations are frequently carried out by means of manipulators, particularly when the work involves handling of radioactive specimens in hot laboratories.
  • the invention proposes a device fitted with a mechanism for driving specimens in rotation, said mechanism comprising at least one wheel which is driven in rotation by the polishing disc about an axis which is parallel to that of said disc, said wheel being placed with respect to a specimen-insertion hole formed in the plate in such a manner that the frictional contact of the polishing disc with the specimen moves this latter against the wheel.
  • the mechanism also comprises a roller which is mounted to rotate freely on said plate on a spindle which is parallel to the spindle of the driving wheel, the roller being placed with respect to the wheel in such a manner that the specimen is applied both against said wheel and said roller.
  • the direction of rotation of the driving wheel and the position of said wheel with respect to the hole are advantageously chosen so that the action of the wheel is 3,440,770 Patented Apr. 29, 1969 added to the action of the difference in linear frictional velocities at the different points of the specimen so as to cooperate in setting this latter in rotation.
  • FIG. 1 is a view in elevation of the device with a specimen to be polished in position
  • FIG. 2 shows the device looking on the right-hand side of FIG. 1, the specimen-holding plate and drive mechanism being in the raised position.
  • the device which is illustrated in FIGS. 1 and 2 comprises a horizontal base-plate 4 which carries a drive motor (not shown in the drawings). Said motor is adapted to drive in rotation in the direction of the arrow 1 a vertical shaft 6 which carries a rotary polishing disc 8; the top face of the disc is provided with a flat covering 10 of abrasive.
  • Bearing-brackets 12 are mounted on the base-plate 4 and fitted with a horizontal pin 14 on which is pivotally mounted a swingable unit generally designated by the reference 15; said unit 15 is made up of a plate 16 for receiving and retaining specimens and an arm 18 which is pivotally mounted on the pin 14.
  • the arm and plate are secured to each other by any suitable means such as screws 20 and shims (not shown) which can be interposed between said arm and said plate so as to modify the relative positions of these latter and to ensure that the plane of the specimen retaining plate and the plane of the base-plate are in parallel relation.
  • the plate 16 of the device which is illustrated in FIGS. 1 and 2 is pierced by three circular holes such as the hole 22 for the purpose of accommodating specimens such as the specimen 24.
  • the holes 22 have a diameter which is slightly larger than that of the specimens in order to permit of a certain freedom of motion in plan when the specimen retaining plate is in the lowered position.
  • the mechanism for driving the specimens in rotation is provided with portions which are associated with each of three holes and a common portion.
  • Said common portion comprises a driving cone 26 which is rotatably mounted on a spindle 28, said spindle being fixed at the center of the specimen retaining plate 16 by means of a nut 29.
  • the driving cone moves into position in coaxial relation with the rotary polishing disc, thereby constituting a stationary abutment which fixes the height of the specimen retaining plate 16 above the abrasive covering 10.
  • said cone 26 is adapted to be driven in rotation by the polishing disc.
  • a blind-end slot of elongated shape is formed in the large base of the cone so as to engage over a tenon 30 of corresponding shape which is formed in the line of extension of the drive shaft 6.
  • a driving wheel 32 is associated with the hole 22 and is mounted on a spindle 34 which is secured to the specimen retaining plate.
  • the wheel is mounted to rotate freely on the spindle 34 and is additionally capable of slidingly longitudinally along said spindle for the purpose of ensuring that a rubber rim 36 which is fitted on said Wheel is brought to bear against the cone 26 under the action of the weight proper of the wheel.
  • the cone which is driven by the polishing disc, rotates in the direction of the arrow 1
  • the wheel 32 rotates in the opposite direction (arrow j in FIG. 2).
  • the driving wheel 32 is placed with respect to the hole 22 in such a manner and has a diameter such that it projects slightly within said hole 22; as shown in FIG. 2, said wheel is located downstream of the hole in the direction of rotation f of the polishing disc and the wheel spindle 34 is slightly nearer the center of the polishing disc than the center of the hole 22.
  • That portion of the drive mechanism which is associated with the hole 22 further comprises a guide roller 38 which is rotatably mounted on a vertical spindle 40 which is also secured to the specimen retaining plate 16. Said roller is also placed downstream of the hole 22 in the direction of rotation of the polishing disc and radially so as to project also within the hole, the axis of said roller being located at a slightly greater distance from the center of the polishing disc 8 than the center of the hole 22.
  • the operation of the device is apparent from the foregoing description and will therefore be described only briefly.
  • the specimen to be polished is inserted through the hole 22 and placed in position on the polishing disc.
  • the specimen 24 is drawn into abutment against the wheel 32 and the roller 38.
  • the wheel 32 then drives the specimen in rotation in the direction indicated by the arrow 1 in FIG. 2, that is to say in the direction of rotation of the polishing disc 8.
  • the device which is illustrated in FIGS. 1 and 2 is designed to receive three specimens although any number may be provided. In fact, the number of specimens is limited in practice solely by the dimensions of the polishing disc. It is noted in addition that the positioning and removal of specimens remain extremely simple operations both during rotation and when the device is stationary and the tolerance allowed on the diameter of specimens is as great as was the case in devices of the prior art.
  • a device for polishing specimens of substantially cylindrical shape wherein said device comprises a rotary polishing disc having a fiat abrasive face at right angles to its axis of rotation and a mechanism for retaining and driving specimens in rotation, said mechanism comprising at least one roller which is mounted to rotate freely on a spindle which is parallel to the drive shaft of the polishing disc and a wheel which is mounted to rotate freely on a spindle which is substantially parallel to the drive shaft of said polishing disc, said wheel being applied against and driven by a cone which is coaxial with the polishing disc and which is disengageably coupled for rotation with said disc, the position of the roller and of the wheel being such that the friction between the polishing disc and a specimen causes said specimen to be applied against said roller and against said Wheel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
US612997A 1966-02-18 1967-01-31 Device for polishing specimens Expired - Lifetime US3440770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR50212A FR1475016A (fr) 1966-02-18 1966-02-18 Dispositif de polissage d'échantillons

Publications (1)

Publication Number Publication Date
US3440770A true US3440770A (en) 1969-04-29

Family

ID=8601747

Family Applications (1)

Application Number Title Priority Date Filing Date
US612997A Expired - Lifetime US3440770A (en) 1966-02-18 1967-01-31 Device for polishing specimens

Country Status (8)

Country Link
US (1) US3440770A (ja)
BE (1) BE693093A (ja)
CH (1) CH472267A (ja)
ES (1) ES336563A1 (ja)
FR (1) FR1475016A (ja)
GB (1) GB1102738A (ja)
LU (1) LU52970A1 (ja)
NL (1) NL6702127A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546843A (en) * 1968-10-21 1970-12-15 Us Plywood Champ Papers Inc Combination roofing-sheathing panel system
CN110355677A (zh) * 2019-07-31 2019-10-22 浙江智昌机器人科技有限公司 一种化纤喷丝头抛光装置
DE102020113324A1 (de) 2020-05-15 2021-11-18 Atm Qness Gmbh Labor-Tellerschleifgerät, Verfahren, Ersatzschleifscheibe und Verwendung einer Schleifscheibe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239618A (en) * 1990-01-09 1991-07-10 Roger Edward Lane A device for mounting a workpiece on a lapping machine
CN113524012B (zh) * 2021-07-26 2023-07-28 北京兰光精密机电有限公司 一种滚磨自动落料装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634558A (en) * 1947-04-14 1953-04-14 John M Wolfskill Piezoelectric crystal lapping apparatus
US2839877A (en) * 1954-03-29 1958-06-24 Crane Packing Co Lapping machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634558A (en) * 1947-04-14 1953-04-14 John M Wolfskill Piezoelectric crystal lapping apparatus
US2839877A (en) * 1954-03-29 1958-06-24 Crane Packing Co Lapping machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546843A (en) * 1968-10-21 1970-12-15 Us Plywood Champ Papers Inc Combination roofing-sheathing panel system
CN110355677A (zh) * 2019-07-31 2019-10-22 浙江智昌机器人科技有限公司 一种化纤喷丝头抛光装置
CN110355677B (zh) * 2019-07-31 2024-01-02 智昌科技集团股份有限公司 一种化纤喷丝头抛光装置
DE102020113324A1 (de) 2020-05-15 2021-11-18 Atm Qness Gmbh Labor-Tellerschleifgerät, Verfahren, Ersatzschleifscheibe und Verwendung einer Schleifscheibe

Also Published As

Publication number Publication date
FR1475016A (fr) 1967-03-31
ES336563A1 (es) 1969-11-01
CH472267A (fr) 1969-05-15
BE693093A (ja) 1967-07-03
NL6702127A (ja) 1967-08-21
LU52970A1 (ja) 1967-04-10
GB1102738A (en) 1968-02-07

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