US3686798A - Belt grinding machines and platen therefor - Google Patents

Belt grinding machines and platen therefor Download PDF

Info

Publication number
US3686798A
US3686798A US89680A US3686798DA US3686798A US 3686798 A US3686798 A US 3686798A US 89680 A US89680 A US 89680A US 3686798D A US3686798D A US 3686798DA US 3686798 A US3686798 A US 3686798A
Authority
US
United States
Prior art keywords
platen
abrasive belt
belt
grinding machine
grinding
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
US89680A
Other languages
English (en)
Inventor
Charles Copresti
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.)
CA ACQUISITION Co CHICAGO ILL A CORP OF
Original Assignee
Carborundum 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 Carborundum Co filed Critical Carborundum Co
Application granted granted Critical
Publication of US3686798A publication Critical patent/US3686798A/en
Assigned to KENNECOTT CORPORATION reassignment KENNECOTT CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1980 NORTH DAKOTA Assignors: BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY THE, CHASE BRASS & COPPER CO. INCORPORATED, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, PLAMBEAU MINING CORPORATION, RIDGE MINING CORPORATION (ALL MERGED INTO)
Assigned to CA ACQUISITION CO., CHICAGO, ILL. A CORP. OF DE reassignment CA ACQUISITION CO., CHICAGO, ILL. A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KENNECOTT CORPORATION
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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08—Pressure shoes; Pressure members, e.g. backing belts

Definitions

  • the grinding machine utilizing the platen is the type in which work is fed in a direction normal to the movement of the abrasive belt.
  • the platen is rigidly tensioned against the abrasive belt so that narrow pressure portion urges the abrasive belt against a workpiece.
  • a platen for a belt grinding machine comprising a supporting portion and a pressing portion rigidly mounted on said supporting portion, said pressing portion comprising a narrow strip of wear resistant material adapted to extend obliquely across the width of the belt for urging the belt against a workpiece.
  • FIG. l illustrates the platen assembly as employed in.
  • FIG. 2 is a front elevational view of mounting
  • FIG. 3 is a side view of the platen
  • FIG. 4 is an end view of the platen of FIG. 3.
  • the belt grinding machine 11 includes a grinding head 13 mounted on a base 15.
  • Adrive roller 17 is mounted on the grinding head 13 for rotation in suitable bearing means and driven by an electric motor (not shown).
  • Idler roller 19 is horizontally spaced from the drive roller 17 and is mounted for rotation between two spaced arms of yoke member 21 which is mounted on the grinding head 13.
  • Tracking roller 23 is vertically spaced from the drive roller and similarly mounted on yoke member 25.
  • the bight portion of yoke member 25 is connected to one end of a fluid power device or fluid cylinder 27.
  • the other end of the fluid cylinder 27 is connected to arm 29 rigidly mounted on the grinding head I3. Actuation of the fluid cylinder 27 acts to apply tension to an abrasive belt 31 which is trained around rollers l7, l9 and 23.
  • the grinding-head I3 is positioned above a conveyor 33 so that work 35 is fed into the abrasive belt 31 in a direction normal to the movement of the abrasive belt 31.
  • the distance between the abrasive belt 31 and the conveyor 33 may be selectively varied. It is contemplated that this adjustment may be achieved by various conventional means.
  • the grinding head 13 can be supported for vertical movement by utilizing a pair of split tapered gibs attached to the backside thereof.
  • the gibs slide vertically in square ways in a pair of columns firmly mounted to the base 15 or floor.
  • a screw jack can be used to raise or lower the grinding head 13.
  • the conveyor may be selectively raised or the platen lowered by screw jacks while the grinding head remains rigidly mounted to supporting members. Since many such arrangementsof grinding head and conveyor are known in the prior art, no illustration or further explanation is believed necessary.
  • the conveyor 33 which feeds work 35 in a direction indicated by the arrow is of a conventional type.
  • the conveyor 33 includes a conveyor frame 37 which is provided with rollers 39 journaled for rotation at opposite ends thereof.
  • An endless conveyor belt 4l advances the workpieces beneath the abrasive belt 31.
  • the conveyor belt 41 is driven by any suitable means, such as an electric motor, at a selected speed.
  • a pair of platen support members 43 which have flat mounting surfaces 45 facing the conveyor belt 41 project outwardly from the grinding head 13.
  • the support members 43 are preferably a pair of angle irons each having one side secured to the grinding head 13 with another side projecting over the conveyor belt 41.
  • a plate 47 is rigidly mounted to the mounting surfaces 45.
  • a plurality of bores 49 in the mounting surfaces 45 are aligned with bores 51 in the backing plate 47.
  • Bolts 53 passing through bores 49 and bores 51 secure the plate 47 to mounting surface 45.
  • the plate 47 is preferably adjusted so as to lie in a plane parallel to the work supporting surface of the conveyor belt 41 by utilizing spacing members 55 around the bolts 53.
  • the spacing members 55 are positioned between the plate 47 and the mounting surface 45.
  • the platen 57 is rigidly positioned above the conveyor belt 41 and tensioned against the non-abrasive side of the abrasive belt 31.
  • the height of the platen above the conveyor is varied depending upon the amount of stock removal desired or the precise dimension of the workpiece desired.
  • the platen 57 comprises a supporting portion 59 in the shape of an elongated rectangular bar.
  • the top surface 61 of the supporting portion 59 is rigidly secured to the bottom of plate 47.
  • bolts 63 pass through holes 65 in the plate 47 and engage threaded holes 67 in the top surface of the supporting portion 59.
  • the bar platen 57 comprises a pressing portion 69 which is a narrow strip of wear resistant material extending lengthwise of the platen and projecting downwardly from the bottom surface of the supporting portion 59.
  • the pressing portion is a strip of uniform width with a bottom surface aligned in a plane substantially parallel to the work conveying surface.
  • a single pressing portion of less than about one inch in width is employed so as to achieve an agressive grinding action while minimizing overheating of the work and accumulation of detritus.
  • the pressing portion 69 is preferably an insert of a hard, dense wear resistant material such as tungsten carbide.
  • the supporting portion 59 includes a rectangular recess or slot 73 extending lengthwise and positioned in the widthwise center of the bottom surface of the supporting portion 59.
  • a plurality of laterally bored holes 75 are aligned with the slot 73 and extend through one side of the supporting portion 59.
  • Threaded holes 77 in the insert are aligned with holes 75.
  • Bolts 79 or other suitable fastening means passes through the respective holes in the supporting portion 59 and the insert 71 to hold the insert in a fixed position.
  • the pressing portion 69 extends lengthwise across the entire width of the abrasive belt 31 and coversthe entire width of the surface to be ground.
  • the pressing portion 69 can be mounted substantially perpendicular to the direction of movement of the belt to grind very narrow work surfaces or be mounted obliquely to grind wider work surfaces.
  • the conveyor 33 is conveniently provided with a fence 81 which maintains the position of the work 35 on theconveyor belt 41.
  • the abrasive belt 31 acts to drive the work into the fence 81. In some instances, where irregularly shaped workpieces are being finished, it may be necessary to provide bridging between the workpiece and the fence to maintain the proper position of the workpiece during grinding.
  • the grinding head is adjusted to the proper height above the conveyor belt 41 so as to achieve the removal of the proper amount of stock from the workpiece.
  • the platen 57 is mounted so that the insert 71 extends across the belt and covers the entire width of the surface to be ground.
  • workpieces are seamst ess r. strata. tits. as: $.22: into the abrasive belt 31 they are subjected to the grinding action.
  • a nozzle can be employed to direct a stream of coolant between the abrasive belt and the workpiece to lubricate and cool the contacting surfaces.
  • a grinding machine comprising a grinding head, a plurality of rolls mounted for rotation on said grinding head, an abrasive belt carried by said rolls and having an active run, a platen, means having a work conveying surface for feeding work into said abrasive belt and under said platen in a direction normal to the movement of said belt, means for rigidly mounting said platen above the active run of said abrasive belt, said platen comprising a supporting member and a single narrow pressing member rigidly mounted to said supporting member, said pressing member being of uniform width and having a bottom surface in a plane substantially parallel to the work conveying surface, said pressing member being adapted to be tensioned against said abrasive belt and extending obliquely across the width thereof.
  • a grinding machine including a backing plate for securing said supporting member to said grinding head, said backing plate being adjustably attached to said support member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US89680A 1970-11-16 1970-11-16 Belt grinding machines and platen therefor Expired - Lifetime US3686798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8968070A 1970-11-16 1970-11-16

Publications (1)

Publication Number Publication Date
US3686798A true US3686798A (en) 1972-08-29

Family

ID=22219010

Family Applications (1)

Application Number Title Priority Date Filing Date
US89680A Expired - Lifetime US3686798A (en) 1970-11-16 1970-11-16 Belt grinding machines and platen therefor

Country Status (5)

Country Link
US (1) US3686798A (enrdf_load_stackoverflow)
JP (1) JPS5621543B1 (enrdf_load_stackoverflow)
CA (1) CA945379A (enrdf_load_stackoverflow)
DE (1) DE2156536A1 (enrdf_load_stackoverflow)
GB (1) GB1372196A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891558A (en) * 1972-12-06 1975-06-24 Jr Paul Condit Oil and debris removal unit
US4038784A (en) * 1976-05-07 1977-08-02 Acrometal Products, Inc. Method and apparatus for cross grain abrading to produce a rough-sawn effect
US4343113A (en) * 1979-03-30 1982-08-10 Machinefabriek A. Van Der Linden. B.V. Abrading device
JPS5942838U (ja) * 1982-09-14 1984-03-21 竹川　敏夫 ベルトサンダ−機
EP0193665A1 (en) * 1983-07-15 1986-09-10 Helical Springs Limited Grinding apparatus
US20030171082A1 (en) * 2000-05-26 2003-09-11 Price John Lewis Grinding apparatus
US20080207097A1 (en) * 2005-09-12 2008-08-28 Lissmac Maschinebau Und Diamantwerkzeuge Gmbh Apparatus for machining a workpiece
US20120295523A1 (en) * 2009-11-27 2012-11-22 Lissmac Maschinebau GmbH Machining station and apparatus for machining a workpiece
US20180311780A1 (en) * 2017-04-26 2018-11-01 Jerry Micheal Moen Abrasive Belt Grip
US20230070836A1 (en) * 2020-02-28 2023-03-09 Dms Korea Co., Ltd. Apparatus for grinding surface of steel sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153250U (enrdf_load_stackoverflow) * 1988-04-13 1989-10-23
US5210978A (en) * 1992-05-26 1993-05-18 J. D. Phillips Corporation Nose piece retainer for abrasive belt backing shoe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1924593A (en) * 1931-12-31 1933-08-29 Cincinnati Grinders Inc Grinding machine
US1978149A (en) * 1930-01-28 1934-10-23 George M Stevenson Abrading machine
US2651150A (en) * 1949-11-02 1953-09-08 Florez Company Inc De Incremental sanding apparatus for trimming book blocks
DE924256C (de) * 1952-10-16 1955-02-28 Fritz Bernsau Vorrichtung zum Schleifen und Polieren von Flaechen mittels Schleifbaender
US2717422A (en) * 1951-05-17 1955-09-13 Bouligny Inc R H Method and means for forming sanding blocks
US2762173A (en) * 1954-12-15 1956-09-11 Bottcher Paul Belt grinding machine for woodwork

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978149A (en) * 1930-01-28 1934-10-23 George M Stevenson Abrading machine
US1924593A (en) * 1931-12-31 1933-08-29 Cincinnati Grinders Inc Grinding machine
US2651150A (en) * 1949-11-02 1953-09-08 Florez Company Inc De Incremental sanding apparatus for trimming book blocks
US2717422A (en) * 1951-05-17 1955-09-13 Bouligny Inc R H Method and means for forming sanding blocks
DE924256C (de) * 1952-10-16 1955-02-28 Fritz Bernsau Vorrichtung zum Schleifen und Polieren von Flaechen mittels Schleifbaender
US2762173A (en) * 1954-12-15 1956-09-11 Bottcher Paul Belt grinding machine for woodwork

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891558A (en) * 1972-12-06 1975-06-24 Jr Paul Condit Oil and debris removal unit
US4038784A (en) * 1976-05-07 1977-08-02 Acrometal Products, Inc. Method and apparatus for cross grain abrading to produce a rough-sawn effect
US4343113A (en) * 1979-03-30 1982-08-10 Machinefabriek A. Van Der Linden. B.V. Abrading device
JPS5942838U (ja) * 1982-09-14 1984-03-21 竹川　敏夫 ベルトサンダ−機
EP0193665A1 (en) * 1983-07-15 1986-09-10 Helical Springs Limited Grinding apparatus
US20030171082A1 (en) * 2000-05-26 2003-09-11 Price John Lewis Grinding apparatus
US6663475B2 (en) * 2000-05-26 2003-12-16 John Lewis Price Grinding apparatus
US20080207097A1 (en) * 2005-09-12 2008-08-28 Lissmac Maschinebau Und Diamantwerkzeuge Gmbh Apparatus for machining a workpiece
US7614935B2 (en) * 2005-09-12 2009-11-10 Lissmac Maschinebau Und Diamantwerkzeuge Gmbh Apparatus for machining a workpiece
US20120295523A1 (en) * 2009-11-27 2012-11-22 Lissmac Maschinebau GmbH Machining station and apparatus for machining a workpiece
US8574036B2 (en) * 2009-11-27 2013-11-05 Lissmac Maschinenbau Gmbh Machining station and apparatus for machining a workpiece
US20180311780A1 (en) * 2017-04-26 2018-11-01 Jerry Micheal Moen Abrasive Belt Grip
US20230070836A1 (en) * 2020-02-28 2023-03-09 Dms Korea Co., Ltd. Apparatus for grinding surface of steel sheet

Also Published As

Publication number Publication date
JPS5621543B1 (enrdf_load_stackoverflow) 1981-05-20
CA945379A (en) 1974-04-16
GB1372196A (en) 1974-10-30
DE2156536A1 (de) 1972-05-18

Similar Documents

Publication Publication Date Title
US3686798A (en) Belt grinding machines and platen therefor
KR101870258B1 (ko) 무한궤도 방식의 연마장치
JP2009507664A (ja) 帯状、または、板状の金属ワークピースのための、研磨、または、バリ取り用機械加工装置
US4642943A (en) Belt abrading apparatus and method
EP1708850B1 (en) Grinding apparatus for treatment of a surface
US4640056A (en) Vertically self-centering feed assembly
US3701219A (en) Apparatus for effecting superior sanding
US3668814A (en) Surface grinding device
US4628640A (en) Belt sander apparatus
US5220750A (en) Pressure platen for use in an abrasive finishing machine
US3570190A (en) Belt sanding and polishing machine
US3782044A (en) Wide abrasive belt type lumber planing machine
US4038784A (en) Method and apparatus for cross grain abrading to produce a rough-sawn effect
US3654738A (en) Method of and apparatus for effecting superior sanding
US2904937A (en) Pressure platen means for a belt polishing or grinding machine
GB1009153A (en) Belt sanding machine
US3266197A (en) Coated abrasive apparatus
US3611643A (en) Planing machine using rotatable abrasive drums
EP0052627A4 (en) GRINDING MACHINE.
KR910006280B1 (ko) 연마로울을 구비한 스케일 제거 연마장치
US3529384A (en) Sanding machine
WO2009071093A1 (en) Grinding apparatus and apparatus for grinding a surface on plate-shaped items
JP2916366B2 (ja) サンディングマシン
CN110757269A (zh) 一种用于超薄金属片磨削的装置
US2747341A (en) Grinding machine

Legal Events

Date Code Title Description
AS Assignment

Owner name: KENNECOTT CORPORATION

Free format text: MERGER;ASSIGNORS:BEAR CREEK MINING COMPANY;BEAR TOOTH MINING COMPANY;CARBORUNDUM COMPANY THE;AND OTHERS;REEL/FRAME:003961/0672

Effective date: 19801230

AS Assignment

Owner name: CA ACQUISITION CO., CHICAGO, ILL. A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KENNECOTT CORPORATION;REEL/FRAME:004722/0219

Effective date: 19870421