ES349795A1 - Means for correcting non-uniformity in tires - Google Patents

Means for correcting non-uniformity in tires

Info

Publication number
ES349795A1
ES349795A1 ES349795A ES349795A ES349795A1 ES 349795 A1 ES349795 A1 ES 349795A1 ES 349795 A ES349795 A ES 349795A ES 349795 A ES349795 A ES 349795A ES 349795 A1 ES349795 A1 ES 349795A1
Authority
ES
Spain
Prior art keywords
tyre
transducer
cylinder
cardboard
irregularities
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
ES349795A
Other languages
Spanish (es)
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.)
Aerojet Rocketdyne Holdings Inc
Original Assignee
General Tire and Rubber 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 General Tire and Rubber Co filed Critical General Tire and Rubber Co
Publication of ES349795A1 publication Critical patent/ES349795A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/022—Tyres the tyre co-operating with rotatable rolls
    • G01M17/024—Tyres the tyre co-operating with rotatable rolls combined with tyre surface correcting or marking means
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
    • B24B49/165—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load for grinding tyres
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/366—Single-purpose machines or devices for grinding tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0633—After-treatment specially adapted for vulcanising tyres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/34—Compensating imbalance by removing material from the body to be tested, e.g. from the tread of tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0633—After-treatment specially adapted for vulcanising tyres
    • B29D2030/0634—Measuring, calculating, correcting tyre uniformity, e.g. correcting RFV
    • B29D2030/0635—Measuring and calculating tyre uniformity, e.g. using mathematical methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0633—After-treatment specially adapted for vulcanising tyres
    • B29D2030/0634—Measuring, calculating, correcting tyre uniformity, e.g. correcting RFV
    • B29D2030/0638—Correcting by removing material, e.g. by grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)
  • Tyre Moulding (AREA)

Abstract

A tyre 9 is tested and corrected for non- uniformity by determining the amounts and locations of irregularities and controlling the amount and location of the rubber removed from the tyre so as to diminish or annul the irregularities. As shown, an inflated tyre 9 is rotated against a test drum 7 with a predetermined radial load applied by hydraulic pressure. During rotation of the tyre, the radial force variations are measured by the test drum and recorded on an oscillogram 5 of a read-out device, the curve of the oscillogram being reproduced on cardboard 25 which is wrapped around a cylinder 19 rotatable at the same speed as the tyre. A sensing arm 27 follows the curve and a transducer 29 feeds the signal into a control mechanism for a pair of grinding wheels 31 made of steel and coated with tungsten carbide. The set-up of the cardboard on the drum is such as to allow for the time delay between when a portion of the tyre transmits an impulse to the test drum and when the same portion reaches the grinding wheels. Each grinding wheel is adjustably-mounted on a carrier plate (47), Figs. 2 and 3 (not shown), and is moved vertically into and out of engagement with the tyre by an hydraulic cylinder (53), the travel being controlled by the transducer 29 and checked by a transducer (81) in contact with the carrier plate. A further transducer (87) measures the eccentricity or radial run-out of the tyre and delivers a signal to a central mechanism of an hydraulic cylinder (65) for maintaining a fixed distance between the tyre and a mounting plate (54) for the grinding wheel carrier plate. The irregularities may be ground off by repeating the process until the tyres are reduced to an acceptable level, a separate piece of cardboard being prepared for the cylinder 19 at each stage alternatively, the irregularities may be ground off on a continuous basis, the cardboard being replaced by a cylinder carrying a flexible strip (93), Fig. 4 (not shown), which is moved as the cylinder rotates by a servo mechanism (95) in accordance with the pattern of the radial force variations, a transducer (97) being provided to follow the curve of the flexible strip and send a signal to the control for the grinding wheels. A comparitor may be used to automatically terminate the process when the radial force variations are within an acceptable range or are too large to be easily corrected. If desired, the driving motor for the tyre, and optionally a brake, may be controlled so as to temporarily halt rotation when grinding is to take place. Grinding wheels of different coarseness may be employed to provide a polished finish and each grinding wheel may be separately controlled if so desired. Instead of using an oscillograph, the measurements from the test drum may be recorded by a memory device such as a tape recorder.
ES349795A 1967-02-01 1968-01-26 Means for correcting non-uniformity in tires Expired ES349795A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61325267A 1967-02-01 1967-02-01

Publications (1)

Publication Number Publication Date
ES349795A1 true ES349795A1 (en) 1969-11-01

Family

ID=24456508

Family Applications (1)

Application Number Title Priority Date Filing Date
ES349795A Expired ES349795A1 (en) 1967-02-01 1968-01-26 Means for correcting non-uniformity in tires

Country Status (5)

Country Link
DE (1) DE1729679C3 (en)
ES (1) ES349795A1 (en)
FR (1) FR1553330A (en)
GB (2) GB1220362A (en)
NL (1) NL153125B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640747B1 (en) * 1967-12-09 1971-12-02 Kabel Metallwerke Ghh Electrical contact cable
CA1004499A (en) * 1972-06-27 1977-02-01 Paul E. Appleby Measurement and concurrent correction of tire irregularities
US4016020A (en) * 1973-10-03 1977-04-05 Ongaro Dynamics Incorporated System for measuring and correcting vibrations generated in vehicular tires
US4078339A (en) * 1974-11-18 1978-03-14 Ongaro Dynamics, Inc. Method for correcting rubber tires for forces generated by dynamic non-uniformities
US4139041A (en) * 1976-07-28 1979-02-13 Newton Robert P Tire buffing machine system
US5167094A (en) * 1992-02-10 1992-12-01 Wild Joyce R Method of correcting lateral force variations in a pneumatic tire
IT1272444B (en) * 1993-05-21 1997-06-23 Marangoni Meccanica VERTICAL TIRE ROTATION AXIS SMOOTHING MACHINE
DE19722673B4 (en) * 1997-05-30 2004-08-05 Contitech Transportbandsysteme Gmbh Conductive loop for embedding in a belt, belt, conveyor belt
CN103817566A (en) * 2014-03-10 2014-05-28 南京宏盛毛毡制品有限公司 Felt grinding head processing machine
CN108375479B (en) * 2018-03-09 2024-02-27 江苏江昕轮胎有限公司 Tyre physical property detector and detection method
CN117382234B (en) * 2023-12-11 2024-03-19 中策橡胶集团股份有限公司 Tire building equipment and optimization method for optimizing coaxiality

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765845A (en) * 1954-02-09 1956-10-09 Lloyd Z Bullis Machine for truing tires
US2831298A (en) * 1955-06-20 1958-04-22 Jr Lee Hunter Vehicle tire truing apparatus

Also Published As

Publication number Publication date
DE1729679A1 (en) 1971-03-04
FR1553330A (en) 1969-01-10
GB1220362A (en) 1971-01-27
DE1729679C3 (en) 1973-07-19
DE1729679B2 (en) 1972-12-21
NL153125B (en) 1977-05-16
NL6801235A (en) 1968-08-02
GB1220361A (en) 1971-01-27

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