Hole detection and straightening equipment and detection and straightening method

Abstract

The invention belongs to the field of machining, and particularly relates to hole detection and correction equipment and a detection and correction method. Detection equipment, straightening equipment, a detection method and a straightening method are included. When the equipment moves relative to a reference part, a detection part moves around a fulcrum, and the straightness of a hole is obtained according to a light spot and change information thereof. The magnitude of the force of a special assistor is related to the error of the axis of the hole. The straightness of the hole is solved by adopting a minimum containing area method or a least square method or a two-end-point connecting line method or a rotational inertia method. The rotational inertia method comprises the steps of establishing a coordinate system OXYZ; assigning measuring points with mass and rigidization; solving rotational inertia, an inertia product, an inertia matrix, a diagonal matrix thereof and a main inertial coordinate system O'X'Y'Z' of a rigid body; and solving the straightness by projection. The straightening method comprises the steps of calculating the straightness of the hole; applying force for straightening; and repeating detection and force application. The optical amplification principle is adopted, errors caused by the rotation of the detection part around the axis thereof are reduced, friction is small, and the equipment and the method can be used for large-diameter holes and small-diameter holes.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to hole detection and correction equipment and a detection and correction method. Background technique [0002] The relevant literature of the machinery industry introduces the algorithm of straightness error evaluation. Commonly used are the minimum contained area method, the two-end point connection method, and the least squares method. The evaluation of the straightness of the hole or deep hole axis is often based on the above method. Various approximation methods are also used in the factory, for example, using an ultrasonic thickness gauge to estimate whether the deep hole is deflected by measuring the wall thickness of the deep hole. Of course, this method has a principle error. [0003] Common straighteners are used to straighten the straightness of wires such as straightened steel wires. Some enterprises produce equipment for straightening pipes. The strai...

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Problems solved by technology

Various approximation methods are also used in the factory, for example, using an ultrasonic thickness gauge to estimate whether the deep hole is deflected by measuring the wall thickness of the deep hole. Of course, this method has a principle error

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