Method for measuring actual diameter of carrier through area method
A technology of actual diameter and area method, applied in measurement devices, instruments, optical devices, etc., can solve the problems of affecting results, centering, unevenness of the surface of the carrier, and achieve the effect of reasonable design and ingenious concept
Pending Publication Date: 2022-05-10
江苏首华智能装备有限公司
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Problems solved by technology
[0002] The three-way catalytic converter is composed of a carrier, a gasket, and a cylinder. When assembling, the carrier wrapped with the gasket is put into the cylinder, and then the diameter of the cylinder is reduced to make it close to the carrier; but the surface of the carrier It is uneven, which limits our ability to accurately measure the actual diameter of the carrier. If the actual diameter is too small, the assembly will not be tight, and it will shake during transportation, resulting in damage to the carrier. If the actual diameter is too large, and the carrier is made of Made of ceramic, it is easy to crush the carrier when reducing the diameter of the cylinder
Practice has proved that the actual radius of the carrier on the side of this method is still inaccurate, and its placement is difficult to achieve absolute centering, and it is easy to deviate from 0-10mm, which affects the final result
Method used
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[0024] like Figure 1-3 Shown, a kind of planimetric method measures the method of the actual diameter of carrier, and described carrier is the carrier of three-way catalyst, and it is made of ceramics, and columnar, surface is uneven; Described method comprises as follows:
[0025] Place the carrier 1 on the jig 2, rotate 360 degrees with the jig 2, fix the ranging sensor 3, which is facing the carrier, and measure the distance from the outer peripheral surface of the carrier to the center of rotation of the carrier, that is, the radius data RX; The ranging sensor 3 is a Keyence ranging sensor.
[0026] 1) Record a radius data every 0.1 degrees, which are R1, R2...R3600 in turn; at the same time, divide the outer peripheral surface of the carrier into 3600 arcs.
[0027] 2) The two adjacent diameter data are assumed to be R1 and R2, and the included angle Ф=0.1; when Ф is small, the arc can be approximately regarded as a straight line segment, according to the cosine theor...
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The invention relates to a method for measuring the actual diameter of a carrier by an area method, the carrier is a carrier of a three-way catalyst, is made of ceramic, is columnar and has an uneven surface; the method comprises the following steps that a carrier is placed on a jig and rotates by 360 degrees along with the jig, a distance measuring sensor is fixed and directly faces the carrier, and the distance between the peripheral face of the carrier and the rotation center of the carrier is measured, namely radius data RX; the method comprises the following steps: (1) recording radius data at intervals of 0.1 degree, namely R1, R2,..., R3600 in sequence; meanwhile, the peripheral surface of the carrier is equally divided into 3600 sections of arcs; the method comprises the following steps of (1) taking a circular arc as a circular arc, (2) assuming that two adjacent diameter data are R1 and R2, and an included angle phi is equal to 0.1, when phi is very small, the circular arc can be approximately regarded as a straight line segment, and calculating the length L of the circular arc according to the cosine law of a triangle: L2 = R1 * R2 * SINphi / 2, and (3) superposing 3600 L, namely the perimeter C of the peripheral surface of the carrier, and calculating the actual radius D of the carrier according to the perimeter formula of a circle: C = piD.
Description
technical field [0001] The invention relates to the field of three-way catalytic converters, in particular to a method for measuring the actual diameter of a carrier by an area method. Background technique [0002] The three-way catalytic converter is composed of a carrier, a gasket, and a cylinder. When assembling, the carrier wrapped with the gasket is put into the cylinder, and then the diameter of the cylinder is reduced to make it close to the carrier; but the surface of the carrier It is uneven, which limits our ability to accurately measure the actual diameter of the carrier. If the actual diameter is too small, the assembly will not be tight, and it will shake during transportation, resulting in damage to the carrier. If the actual diameter is too large, and the carrier is made of Made of ceramics, it is easy to crush the carrier when reducing the diameter of the cylinder. [0003] On this basis, we assume that the carrier is placed in the center of the jig, rotated...
Claims
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Login to View More IPC IPC(8): G01B11/08
CPCG01B11/08
Inventor 杨小亮朱志峰盛云鹏
Owner 江苏首华智能装备有限公司