US1572515A - Method of roughening grinding wheels - Google Patents

Method of roughening grinding wheels Download PDF

Info

Publication number
US1572515A
US1572515A US580412A US58041222A US1572515A US 1572515 A US1572515 A US 1572515A US 580412 A US580412 A US 580412A US 58041222 A US58041222 A US 58041222A US 1572515 A US1572515 A US 1572515A
Authority
US
United States
Prior art keywords
roughening
grinding wheel
grinding wheels
current
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
US580412A
Inventor
Monroe S Clawson
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
Priority to US580412A priority Critical patent/US1572515A/en
Application granted granted Critical
Publication of US1572515A publication Critical patent/US1572515A/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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/001—Devices or means for dressing or conditioning abrasive surfaces involving the use of electric current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S451/00—Abrading
    • Y10S451/908—Electrical abrading

Definitions

  • This invention relates to the grinding and polishing art and has for its object the provision of a novel process and means for roughening grinding wheels continually while they are in use so that they will be maintained in proper condition for effective action.
  • the principle involved is the passing of current through two conductors which have rapid relative movement, the points of contact continually changing with such rapidity that there is a high resistance to the current at the point of contact which will result in the generation of sufficient heat to fuse the metal, which fused metal is wiped away as fast as fusing occurs so that there will be a positive removal, the moving element being affected far less than the other.
  • the present invention has for its object the provision of a movable element contacting continually with a grinding wheel, both of these elements being in circuit with a source of current, means being also provided for varying the strength of the current and for preventing arcing at the point of contact of the movable dressing element with the rotary grinding wheel.
  • the numeral 10 designates a shaft which may be driven by any desired means, not shown, and which carries a grinding wheel 11 which must naturally be constructed of some conductor of electricity, preferably high speed steel. Engaging the periphery of this grinding wheel is a movable element 12 which may be formed as a bar of iron, steel, carbon or the like and Serial No. 580,412.
  • the numeral 1? represents a source of current such as a dynamo or the like, which has one terminal connected by a wire 18 with the movable element 12 and which has its other terminal connected by a wire 19 with a rheostat 20 which includes a movable arm 21 connected with the shaft 10 by a wire 22.
  • the purpose of the rheostat is to regulate the strength of current passing through the grinding wheel and the movable element 12.
  • a condenser 23 bridging the wires 18 and 19 and formed of a plurality of units 2 1 so arranged that any desired number thereof may be plugged into the circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

Feb. 9 1926. 1,572,515
M. s. CLAWSON METHOD OF ROUGHENING GRINDING WHEELS Filed August 1922 22 IIHI" 9 Afayrae L9. CZan dzy Patented F eb. 9, 1926.
MONROE S. CLAWSON, OF UPPER IONTCLAIR, NEVJ JERSEY.
METHOD OF ROUGHENING GRINDING WHEELS.
Application filed August 8, 1922.
To all whom it may concern:
Be it known that 1, Monroe S. CLAWSON, a citizen of the United States, residing at Upper Montclair, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Methods of Roughening Grinding Vfheels, of which the following is a specification.
This invention relates to the grinding and polishing art and has for its object the provision of a novel process and means for roughening grinding wheels continually while they are in use so that they will be maintained in proper condition for effective action.
The principle involved is the passing of current through two conductors which have rapid relative movement, the points of contact continually changing with such rapidity that there is a high resistance to the current at the point of contact which will result in the generation of sufficient heat to fuse the metal, which fused metal is wiped away as fast as fusing occurs so that there will be a positive removal, the moving element being affected far less than the other.
More specifically, the present invention has for its object the provision of a movable element contacting continually with a grinding wheel, both of these elements being in circuit with a source of current, means being also provided for varying the strength of the current and for preventing arcing at the point of contact of the movable dressing element with the rotary grinding wheel.
With the above and other objects and advantages in view the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawing in which The figure shows a somewhat diagrammatic View of an apparatus for carrying out my process.
It should be understood in advance that the structure illustrated is merely an example of means for carrying out the principle involved. The numeral 10 designates a shaft which may be driven by any desired means, not shown, and which carries a grinding wheel 11 which must naturally be constructed of some conductor of electricity, preferably high speed steel. Engaging the periphery of this grinding wheel is a movable element 12 which may be formed as a bar of iron, steel, carbon or the like and Serial No. 580,412.
which is connected with a pitman 13 pivoted upon a wrist pin 1 1 carried by a wormwheel 15 meshing with a worm 16 on the shaft 10 so that as the shaft is rotated the l ar 12 will be rubbed back and forth against the periphery of the grinding wheel.
The numeral 1? represents a source of current such as a dynamo or the like, which has one terminal connected by a wire 18 with the movable element 12 and which has its other terminal connected by a wire 19 with a rheostat 20 which includes a movable arm 21 connected with the shaft 10 by a wire 22. The purpose of the rheostat is to regulate the strength of current passing through the grinding wheel and the movable element 12.
In order to prevent the formation of a spark at the points of contact of the members 11 and 12 and to thus prevent pitting or burning of the grinding wheel, I may prefer to use a condenser 23 bridging the wires 18 and 19 and formed of a plurality of units 2 1 so arranged that any desired number thereof may be plugged into the circuit.
In the operation it will be seen that the passage of the current through the member 12 engaging the wheel 11 will cause a drag so that as the member 12 is reciprocated the wheel will be roughened and thus kept in a condition making it efficient for use in dressing or grinding down articles or material.
From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simple and yet highly effectual method of and apparatus for roughening a grinding wheel while in use so that it will be unnecessary to stop dressing operations to roughen the grinding wheel or to replace a smooth one. From actual experiment I have discovered that the process is very efiicient, continuous and inexpensive.
I claim:
The process of roughening a rotating grinding wheel of conducting material consisting in rubbing thereagainst transversely of the periphery thereof a conducting element, the grinding wheel and the conducting element being connected in series with a source of current.
In testimony whereof I affix my signature.
MONROE S. OLAXVSON.
US580412A 1922-08-08 1922-08-08 Method of roughening grinding wheels Expired - Lifetime US1572515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US580412A US1572515A (en) 1922-08-08 1922-08-08 Method of roughening grinding wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US580412A US1572515A (en) 1922-08-08 1922-08-08 Method of roughening grinding wheels

Publications (1)

Publication Number Publication Date
US1572515A true US1572515A (en) 1926-02-09

Family

ID=24321003

Family Applications (1)

Application Number Title Priority Date Filing Date
US580412A Expired - Lifetime US1572515A (en) 1922-08-08 1922-08-08 Method of roughening grinding wheels

Country Status (1)

Country Link
US (1) US1572515A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485361A (en) * 1944-09-06 1949-10-18 Steel Products Eng Co Broken tap removing
US2920180A (en) * 1957-03-18 1960-01-05 Agie A G Fur Ind Elektronek Electroerosive grinding method and device for its performance
US2920026A (en) * 1952-05-01 1960-01-05 Norton Co Grinding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485361A (en) * 1944-09-06 1949-10-18 Steel Products Eng Co Broken tap removing
US2920026A (en) * 1952-05-01 1960-01-05 Norton Co Grinding machine
US2920180A (en) * 1957-03-18 1960-01-05 Agie A G Fur Ind Elektronek Electroerosive grinding method and device for its performance

Similar Documents

Publication Publication Date Title
US1572515A (en) Method of roughening grinding wheels
US751527A (en) Apparatus for dividing
US2756293A (en) Rotary switch
US416873A (en) Cutting metal by electricity
US3459917A (en) Spark hardening method and apparatus
US2050416A (en) Rounding an end of a metal part
US1866382A (en) Electrode mounting for welding machines
US1620519A (en) Electrical abrasion process
US2390559A (en) Apparatus for selective heat treatment of metal
US1605432A (en) Alloy and process of forming the same
US2164850A (en) Method of conditioning chrome alloy wire and apparatus for the practice of said method
US1858104A (en) Depilatory
US581091A (en) Reiniiold ii
US436968A (en) Method of and apparatus for drawing wire
US837296A (en) Electric welding apparatus.
US1470758A (en) Rheostat
US582114A (en) Controller for electric motors
US1368685A (en) Candy-cutting machine
US1433853A (en) Method for electric welding
ES419537A1 (en) Thermal conditioning of wire
US1533447A (en) Apparatus and process for electroplating metal and forming articles therefrom
US3848149A (en) Electric machine rotor current collecting device
US1105231A (en) System of electrical distribution.
US288915A (en) beeman
US1730988A (en) Periodic cam-operated circuit breaker