GB857781A - Improved method and means for barrel finishing - Google Patents

Improved method and means for barrel finishing

Info

Publication number
GB857781A
GB857781A GB952056A GB952056A GB857781A GB 857781 A GB857781 A GB 857781A GB 952056 A GB952056 A GB 952056A GB 952056 A GB952056 A GB 952056A GB 857781 A GB857781 A GB 857781A
Authority
GB
United Kingdom
Prior art keywords
barrel
aperture
level
discharge
tumbling
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
Application number
GB952056A
Inventor
Howard Duncan Goulding
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.)
Roto Finish Ltd
Original Assignee
Roto Finish Ltd
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 Roto Finish Ltd filed Critical Roto Finish Ltd
Priority to GB952056A priority Critical patent/GB857781A/en
Publication of GB857781A publication Critical patent/GB857781A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00Machines 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
    • B24B31/02Machines 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
    • B24B31/03Machines 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 workpieces being continuously-travelling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

857,781. Tumbling. ROTO-FINISH Ltd. June 27, 1957 [March 27, 1956], No. 9520/56. Class 60. A method of finishing work-pieces by tumbling them together with polishing materials in a barrel 1 comprises rotating the barrel about a horizontal or approximately horizontal axis, continually feeding the polishing material and work-pieces into an inlet aperture 8, and discharging them continually through an outlet aperture 10 having its lower edge at a lower level than the lower edge of the inlet such that the difference in level causes the progression of the contents through the barrel. If desired, periods of continuous introduction and discharge are alternated with periods during which no fresh material is introduced and discharge is prevented, tumbling being continued without substantial axial movement of the material in the barrel. As shown, the inlet and outlet apertures 8, 10 are provided in rigid end walls 7, 9 attached to the barrel and are in the form of circular holes concentric with the axis, the outlet aperture being larger in diameter in order to obtain the difference in level between the lower edges of the apertures. The difference in level may be varied by changing the apertured end walls or by partially blanking off one of the apertures. Alternatively, either or both of the openings could be formed by an aperture in a stationary end plate which is in sealing engagement with the rotating drum, the level of the lower edge of the opening then being adjusted by altering the height of the plate. In another arrangement, the rigid end wall of the drum may be in the form of a resilient diaphragm having a central aperture bounded by a collar engaging with a non-rotating locating member which may be adjusted in order to stretch the diaphragm and thereby alter the level of the aperture ; such an arrangement may be replaced by an iris-type diaphragm which can be adjusted during rotation of the barrel. In operation, polishing material, such as rock fragments and an abrasive, either dry or included in a liquid, may be initially introduced through a shoot 11 and distributed along the length of the dum by rotating the latter at high speed ; this is followed by the introduction of the workpieces and move tumbling media for the finishing operation proper. Discharge occurs through a shoot 12 at a rate dependent upon the setting of the outlet aperture 10. To increase the treatment time, the feed is stopped at intervals and the discharge prevented by either closing the outlet aperture or, aligning its lower edge with that of the inlet, thus preventing any progression of the workpieces during the continued rotation of the barrel. Alternatively, the feed may be interrupted and the level allowed to fall to that determined by the discharge aperture. The barrel is rotated by an electric motor 5 driving through a pinion a toothed ring 6 secured to the barrel which is supported on rollers 3 mounted on a base 4.
GB952056A 1956-03-27 1956-03-27 Improved method and means for barrel finishing Expired GB857781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB952056A GB857781A (en) 1956-03-27 1956-03-27 Improved method and means for barrel finishing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB952056A GB857781A (en) 1956-03-27 1956-03-27 Improved method and means for barrel finishing

Publications (1)

Publication Number Publication Date
GB857781A true GB857781A (en) 1961-01-04

Family

ID=9873556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB952056A Expired GB857781A (en) 1956-03-27 1956-03-27 Improved method and means for barrel finishing

Country Status (1)

Country Link
GB (1) GB857781A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126279A1 (en) * 1971-02-22 1972-10-06 Pletscher Geb
GB2436440A (en) * 2005-12-29 2007-09-26 Thomas Bartlett Snell Tumbling device
CN111604779A (en) * 2020-05-25 2020-09-01 尚智勇 Metal disc grinding device based on iris mechanism principle
CN112894606A (en) * 2019-12-02 2021-06-04 宁波中和汽配有限公司 Rolling and polishing processing equipment for rolling needle spherical surface and processing technology thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126279A1 (en) * 1971-02-22 1972-10-06 Pletscher Geb
US3848373A (en) * 1971-02-22 1974-11-19 Pletscher Geb Method for the treatment of workpiece surfaces
GB2436440A (en) * 2005-12-29 2007-09-26 Thomas Bartlett Snell Tumbling device
CN112894606A (en) * 2019-12-02 2021-06-04 宁波中和汽配有限公司 Rolling and polishing processing equipment for rolling needle spherical surface and processing technology thereof
CN111604779A (en) * 2020-05-25 2020-09-01 尚智勇 Metal disc grinding device based on iris mechanism principle
CN111604779B (en) * 2020-05-25 2022-01-28 佛山市顺德区万里马卫浴有限公司 Metal disc grinding device based on iris mechanism principle

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