Angle steel right-angle profile cutting method and angle steel right-angle profile cutting method

Abstract

The invention discloses a method for feeding and scribing angle steel. The method includes scribing a straight line AM perpendicular to a ridge line of the angle steel in a plane of a first straight plane of the angle steel and near end sides of the angle steel; taking a point M' on the straight line AM; drawing a straight line M'K passing the point M' to be parallel to the ridge line of the angle steel; taking the point M' as a first start point, taking the length / 0.5a on the straight line M'K in the direction away from the end side of the angle steel, acquiring the point N', wherein the a is the length of the AM'; connecting the point A and the point N' by a straight line and extending the straight line to a sideline of the first straight plane to obtain an intersection point N of the straight line AN' and an end line, opposite to the ridge line, of the first straight plane of the angle steel, namely a first cutting point, wherein the AN is a first cutting line; acquiring a second cutting point L and a second cutting line AL of a second straight plane of the angle steel by the same method. Via the method, feeding and cutting lines of the angle steel can be quickly scribed.

Description

technical field [0001] The invention relates to the field of angle steel processing, in particular to a method for blanking and marking angle steel right-angle profiles and a method for cutting angle steel right-angle profiles. Background technique [0002] In practice, it is usually necessary to fasten the ends of two angle steel-type right-angle profiles of a certain specification to form a 90-degree frame with the right-angle back facing outward. like figure 1 As shown, it shows the situation when the ends of two angle steels of a certain specification (for example, the side length is 30mm) are snapped together to form a 90-degree frame with the right-angle back facing outward. However, after the two angle steels are cut with a scribe line, they are prone to opening at the joint line (that is, there is a splicing gap), such as figure 2 As shown, there is a gap of 10mm in the largest place. Even if the method of enlarging the sample is adopted, it is not easy to draw a...

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Problems solved by technology

However, after the two angle steels are marked and cut, they are prone to opening at the joint line (that is, there is a splicing gap), such as figure 2 As shown, there is a gap of 10mm in the largest place

Even if the method of enlarging the sample is adopted, it is not easy to draw a precise blanking and cutting line. On the one hand, it may consume a lot of man-hours. On the other hand, if there is a little carelessness in the whole process of enlarging the sample, errors will occur. There may also be a phenomenon of opening angle (that is, the angle at the joint of two angle steels is greater than 90 degrees), such as image 3 shown

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