US3609920A - Sonic polishing apparatus - Google Patents

Sonic polishing apparatus Download PDF

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Publication number
US3609920A
US3609920A US710993A US3609920DA US3609920A US 3609920 A US3609920 A US 3609920A US 710993 A US710993 A US 710993A US 3609920D A US3609920D A US 3609920DA US 3609920 A US3609920 A US 3609920A
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US
United States
Prior art keywords
polishing
chamber
parts
medium
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
US710993A
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English (en)
Inventor
Howard E Mckinney
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.)
Shell USA Inc
Original Assignee
Shell Oil Co
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 Shell Oil Co filed Critical Shell Oil Co
Application granted granted Critical
Publication of US3609920A publication Critical patent/US3609920A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • B08B3/123—Cleaning travelling work, e.g. webs, articles on a conveyor
    • 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
    • B24B31/06—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 oscillating or vibrating containers
    • B24B31/062—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 oscillating or vibrating containers the workpieces travelling through the containers

Definitions

  • the present invention relates to the art of sonic finishing of industrial parts and pertains more particularly to a continuous flow process of sonic finishing of industrial parts.
  • Industrial parts are fabricated by any number of means or methods including casting, forging and machining. Parts emerging from any of these fabrication steps normally are rough, contain burrs and sharp edges and in the case of castings contain molding sand imbedded in the surface thereof. These parts normally need finishing such as cleaning, deburring, edges rounded and polishing prior to further machining or assembly into machines. Many techniques have been used for cleaning and polishing or finishing of these parts including hand scrubbing and grinding. Other methods of cleaning and finishing of these parts include tumbling and shaking of the parts in a grit medium.
  • the tumbling type finishing operation is carried out by loading the parts in a barrel or bin type container which is partially filled with a grit medium and then tumbling the parts in the grit medium by rotating the container about a horizontal axis.
  • the shaking type finishing apparatus bodily shake or generally employs eccentric mass type shakers or vibrators to vibrate a container containing suitable finishing medium and parts. This type of vibration requires massive shakers or vibrators to develop the necessary forces involved in large batch type containers. The above-described methods of cleaning and finishing are time consuming and cannot keep up with modern techniques for the production of industrial parts.
  • the present invention employs the principle of a resonantly vibrating sonic system for the introduction of high levels of sonic energy rapidly and efficiently into a cleaning or finishing medium.
  • the elastic resonant sonic vibration system of the present invention permits the use of a steady flow process of parts finishing wherein the parts go through the finishing chamber at such a rate as to obtain the desired finishing in a short period of time.
  • the energy transmitting system of the present invention employs a resonantly vibrating system which may be referred to as an acoustic circuit.
  • a resonantly vibrating system which may be referred to as an acoustic circuit.
  • the present invention overcomes the foregoing problems in the prior art devices and methods by providing a method and apparatus for a continuous flow process for sonic cleaning of industrial parts.
  • the present system comprises a resonantly vibrating polishing chamber through which the parts pass in intimate contact with the polishing or finishing medium.
  • FIG. 1 is a schematic illustration of a suitable layout for a system in accordance with the present invention
  • FIG. 2 is a side elevation partially in section of a preferred embodiment of apparatus for carrying out the present invention.
  • FIG. 1 there is illustrated a schematic layout of a suitable system for carrying out the present invention.
  • a conduit member 11 which is preferably constructed of a suitable elastic material, and forms a polishing chamber 12 through which articles to be polished are passed in the cleaning process.
  • the conduit member may be of any suitable cross-section and may even be an open channel or trough.
  • a sonic oscillator 13 is operatively coupled to the conduit member 11 to transmit elastic vibrations into a polishing medium contained in its chamber 12.
  • the oscillator 13 and elastic conduit member 11 form an elastic sonic energy transmission system which when operated at or near its resonance frequency provides for the rapid and efficient delivery of energy to the polishing medium in the chamber.
  • Parts 10a, 10b and to be polished pass, such as along a path 14, into chamber 12 wherein the polishing medium under the influence of sonic energy impacts against and along the surfaces of the parts providing effective cleaning and polishing thereof.
  • the polishing medium which may be any suitable type of abrasive particles such as an aluminum oxide, may be retained in a chamber 12 as the articles are passed therethrough or in the alternative may be arranged so as to flow therethrough substantially along with the articles. Moreover, provisions may be made for the recycling of the abrasive or polishing medium such as along the path such as 15-.
  • the polishing media may be of any suitable type or composition to obtain the desired results.
  • the medium may comprise dry granules or may be slightly moistened as desired.
  • the medium may be a slurry comprising abrasive particles suspended in a suitable liquid.
  • the level of polishing medium in chamber 12 and the rate of flow therethrough of the medium as well as the articles to be polished is preferably adjustable all independently in order to obtain the proper degree of finishing.
  • FIG. 2 is illustrated a suitable arrangement of apparatus of carrying out the present invention.
  • an elastic conduit member 18 forms a polishing chamber 19 and serves to transmit energy from a sonic vibration generator 20 into the polishing medium 16.
  • the oscillator 20 is coupled such as by means of a band or clamp 21 to the conduit member 18.
  • the vibration generator 20 is preferably though not limited to the oribiting mass type oscillator, such as disclosed in US. Pat. No. 2,960,- 314, issued to A. G. Bodine on Nov. 15, 1960.
  • the oscillator may be of the single roller type or twin roller type.
  • a lateral standing mode of vibration may be obtained by the use of dual roller oscillator having counter-rotating rollers or by the use of a single roller oscillator having its rotative axis perpendicular to the conduit member 18.
  • Suitable means such as a hopper or chute 22 is utilized for feeding or conveying the polishing medium 16 and parts 17a, 17b and 17c to the polishing chamber 19.
  • the hopper 22 is preferably vibrationally isolated from conduit member 18 such as by means of a resilient or elastomeric ring 23 held in place such as by expandable metal bands 24 and 25.
  • At least some portion of the flow path of the present invention is preferably tilted to provide a continuous gravity feed of the materials through the polishing chamber.
  • Other methods of inducing flow such as pumping may be utilized to maintain a suitable rate of flow through the polishing chamber.
  • the apparatus illustrated in FIG. 2 is supported from suitable support means such as the base member 26 from which extends a vertical strut member 27.
  • the elastic conduit member 18 is preferably supported at nodal points by suitable vibration-isolating means such as an elastomeric band 28- surrounded by band member 29 which is in turn pivotly supported by pin 30 to strut 27.
  • a second elastomeric band 33 and metal band 34 encircle the elastic conduit 18 in the vicinity of the upper nodal point and is in turn pivotally connected by pivot pin 35 to an extendible support member such as fluid transducer 36 which is in turn pivotally supported by pivot pin 38 to base member 26.
  • a conduit 39 extends to a suitable source (not shown) of hydraulic fluid for operating the fluid motor 36.
  • a high degree of filling of the polishing chamber 19 with polishing medium provides a better sonic coupling of the energy from the conduit 18 into the polishing medium in chamber 19 and consequently an increased rate of finishing and polishing of the parts fed therethrough.
  • a suitable bin 45 is located at the discharge end of conduit 18 to catch the polishing medium upon its discharge from the polishing chamber.
  • the parts may be permitted to fall in a heap with the polishing medium from which it is there retrieved or they may be preferably caught by means of a conveyor belt or chain 46 which permits an unrestricted flow of the polishing medium therethrough into the bin 45.
  • the conveyor 46 is supported such as by means of roller 47 and driven by suitable means not shown.
  • Suitable guide panels 48 and 49 supported by means of a strut 50 extend along the sides of the conveyor belt or chain 46.
  • tubular elastic finishing chamber located in a conduit and adapted for receiving a continuous flow of said parts and said finishing medium

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US710993A 1968-03-06 1968-03-06 Sonic polishing apparatus Expired - Lifetime US3609920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71099368A 1968-03-06 1968-03-06

Publications (1)

Publication Number Publication Date
US3609920A true US3609920A (en) 1971-10-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US710993A Expired - Lifetime US3609920A (en) 1968-03-06 1968-03-06 Sonic polishing apparatus

Country Status (7)

Country Link
US (1) US3609920A (de)
BE (1) BE729328A (de)
CH (1) CH481722A (de)
FR (1) FR2003297A1 (de)
GB (1) GB1221517A (de)
NL (1) NL6903293A (de)
SE (1) SE349498B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861840A (zh) * 2014-03-12 2014-06-18 张家港市港威超声电子有限公司 超声波矿浆侵取机
CN104043609A (zh) * 2013-03-13 2014-09-17 朗姆研究公司 在液体超声清洁系统中在孔中产生驻波以改善孔的清洁

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109701956B (zh) * 2019-01-10 2023-10-20 安徽明天氢能科技股份有限公司 一种燃料电池单极板清洗定位传输链

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104043609A (zh) * 2013-03-13 2014-09-17 朗姆研究公司 在液体超声清洁系统中在孔中产生驻波以改善孔的清洁
CN103861840A (zh) * 2014-03-12 2014-06-18 张家港市港威超声电子有限公司 超声波矿浆侵取机
CN103861840B (zh) * 2014-03-12 2017-04-19 张家港市港威超声电子有限公司 超声波矿浆浸取机

Also Published As

Publication number Publication date
SE349498B (de) 1972-10-02
BE729328A (de) 1969-09-04
NL6903293A (de) 1969-09-09
FR2003297A1 (de) 1969-11-07
GB1221517A (en) 1971-02-03
CH481722A (de) 1969-11-30

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