The cutting method of round tube auger blades usually includes triangular method and approximate unfolding method. Here are the steps of the triangle method:
1.The top view is drawn with the inner and outer diameters d and d of the positive spiral plane, and the inner and outer circumferences of the top view are divided into 12 and ·· 13。
2.Connect the points alternately with dotted and thin solid lines.
Round-tube auger. 3.In the main view, take h equal to the pitch, and divide it into twelve equal parts, lead the horizontal line by the bisecting point, and obtain the corresponding intersection point with the perpendicular line drawn by the inner and outer circumference equinox points in the top view, and connect the intersection points into two spirals to complete the main view.
Round-tube auger. 4.Seek truth and length, and expand. It is not difficult to see from the main view and top view that the thin solid line side of each triangle on the spiral plane is a horizontal line, and its horizontal projection reflects the real length, and the real length of each line is equal. The dividing arcs of each dotted line and the inner and outer circles are straight lines and curves in general positions, and the projection does not reflect the real length, which can be found by the right-angle triangle method.
5.After finding the actual length of each line, you can use it to make the real length of each triangle in turn to complete the expanded diagram.
Round-tube auger. There is no fixed standard for the length of the round tube auger, and the specific length depends on the actual application scenario and needs. Generally speaking, the length of the round tube auger will be determined according to the length of the conveyed material and the amount of conveyed. Round-tube auger.