Concave arc radius detection and arc degree determination apparatus and method

Abstract

The invention discloses a concave arc radius detection and an arc degree determination apparatus and method, and the apparatus comprises a detection bench; a linear guide rail is arranged on the surface of the detection bench; a slide block is arranged on the linear guide rail; a measuring probe is arranged on the slide block; and 4 range finding sensors are arranged on the measuring probe. The 4 range finding sensors are vertical to each other and are arranged at the same plane; the slide block is connected with a turntable of a motor through a ball screw rod; an angle sensor is arranged on a rotating shaft of the motor; the range finding sensors, the motor and the angle sensor are connected to a data processor; and the data processor is connected to a controller. By introducing the step of geometric calculating, the method of concave arc radius detection and arc degree determining in prior art is substantially simplified; the over-complex device is simplified; the cost is reduced; the product surface won't be damaged thanks to non-contact measuring; advantages like wide application scope, easy operation, high security, high detection precision and high efficiency are provided; and the method is very suitable for on-line detection.

Description

technical field [0001] The invention relates to a device and method for detecting the radius of a concave arc and judging the arc. Background technique [0002] The arc degree refers to the roundness of the arc. The arc is mainly determined by the arc length and the arc radius. When the arc length is constant, the arc radius determines the curvature (curvature) of the arc. The roundness of the arc is important for improving Mechanical manufacturing and installation accuracy and prolonging the working life of the machine play a very important role. Therefore, it is very important to detect the concave arc radius and determine the arc degree. In the prior art, there are many methods for detecting the radius of a concave arc and judging the degree of the arc, for example, measuring the radius of the arc with the method of bow height and chord length, measuring the radius of the arc with the method of rotation, measuring the radius of the arc with the coordinate method, compute...

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Problems solved by technology

In the prior art, there are many methods for detecting the radius of a concave arc and judging the degree of the arc, for example, measuring the radius of the arc with the method of bow height and chord length, measuring the radius of the arc with the method of rotation, measuring the radius of the arc with the coordinate method, computer scanning Calculation method and three-coordinate measurement, etc., some are contact type, and the detection accuracy is low, and some detection means of arc radius detection and arc degree judgment or the corresponding device structure is too complicated, the equipment is large, and the price is expensive. problem, no effective solution has been proposed so far

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