초록 ▼

A method for minimizing the radial runout of a tire and rim assembly (10) having the steps of measuring the runout of the tire and rim assembly (10), locating the position of maximum radial runout of the tire (1) and the minimum runout of the rim (J). The method minimizes first harmonic vibrations c

A method for minimizing the radial runout of a tire and rim assembly (10) having the steps of measuring the runout of the tire and rim assembly (10), locating the position of maximum radial runout of the tire (1) and the minimum runout of the rim (J). The method minimizes first harmonic vibrations caused by the normal assembly of these components.

대표청구항 ▼

1. A method for minimizing a radial runout of a tire and rim assembly, the method comprising the steps of: a) measuring the amount of radial runout along a radially outer portions of tread lugs by rotating the tire and rim assembly around an axis; b) measuring the radial runout of axially inner

1. A method for minimizing a radial runout of a tire and rim assembly, the method comprising the steps of: a) measuring the amount of radial runout along a radially outer portions of tread lugs by rotating the tire and rim assembly around an axis; b) measuring the radial runout of axially inner portions of the rim by rotating the tire rim assembly around the axis; c) calculating a first and a second harmonics of the rim; d) subtracting point by point the first and second harmonic of the rim calculated under step c) from the radial runout of the assembly as measured under step (a); e) analyzing a data obtained under step (d) as representing the runout of the tire alone; f) discarding the tire if the data obtained under step (e) fall outside a given range; g) discarding the rim if the data obtained under step (b) fall outside a given range. 2. Method according to claim 1 wherein under step (b) two radially inner portions of the rim facing both tire beads are measured; and wherein subsequently an average value is determined and used in the calculation under step (c).3. The method of claim 1 wherein the first harmonic of the data obtained under step (d) is used and a maximum of the first harmonic considered as representing a maximum runout of the tire; and wherein the tire is marked accordingly.4. The method of claim 3 wherein the first harmonic of the data obtained under step (b) is used and a minimum of the first harmonic considered as representing a minimum runout of the rim; and wherein the rim is marked accordingly.5. The method of claim 4 wherein the markings on the tire and on the rim are aligned so as to match-mount the assembly.6. The method of claim 1 wherein the first harmonic of the data obtained under step (d) is used and a minimum of the first harmonic considered as representing a minimum runout of the tire, and wherein the tire is marked accordingly.7. The method of claim 6 wherein the first harmonic of the data obtained under step (b) is used and a maximum of the first harmonic considered as representing a maximum runout of the rim; and wherein the rim is marked accordingly.8. The method of claim 7 wherein the markings on the tire and on the rim are aligned so as to match-mount the assembly.9. The method of claim 1 comprising the steps of: considering the data obtained under step (d) as representing a curve of the runout of the tire alone, calculating the first harmonic of the tire and determining therewith a maximum or a minimum runout of the tire; considering a sum of the first and second harmonic of the rim as representing a curve of the radial runout of the rim alone, using the first harmonic to determine a minimum or a maximum runout of the rim; matching an obtained maximum respectively minimum runout of the tire with a minimum respectively maximum runout of the rim; considering a result as representing a match-mounted tire and rim assembly; calculating point by point a curve of the radial runout of the assembly. 10. The method of claim 9 further comprising the step of selecting a different rim, calculating the first and second harmonic, determining with the first harmonic a minimum or a maximum radial runout of the different rim, and calculating point by point the radial runout of a match-mounted assembly.11. Use of the method of claim 1 in the field and on site on vehicles without dismounting the tire rim assembly from the vehicle.