RU2476310C2 - Method of making hollow cylindrical articles - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking. Log or billet of wood is used to make one hollow cylindrical article. Billet material inside made hollow cylindrical part, apart from cut off layer, serves for making second hollow cylindrical article. Then, material remaining inside second hollow cylindrical article serves to make third hollow cylindrical article and so unless minimum required diameter of hollow cylindrical article is made. Hollow cylindrical articles are produced at one installation at the machine due to cutting cylindrical surfaces by ring cutter of different standard sizes or by laser beam to definite depth. Then, all hollow cylinders made are cut over cross-section.

EFFECT: power savings per unit article.

2 cl, 5 dwg

Description

The invention relates to the field of woodworking and can be used for the manufacture of wooden containers of different volumes from a single workpiece.

For the packaging of food products and other substances, wooden cylindrical containers are often used: boxes, barrels, barrels, etc., having hollow cylinders of a certain thickness as side walls, which together with the bottoms and lids of the container (cavity).

Known methods for producing hollow cylinders: chiselling, drilling with a spiral drill, turning with a turning tool, etc. In this case, only one cavity is obtained from the preform, and the preform material, which was in place of the resulting cavity, is completely turned into waste, which, from the point of view of resource conservation and ecology, is very undesirable.

Another method is free from the aforementioned drawback, based on the use of ring drills (Textbook for high schools. Technology of construction materials. Edited by Prof. M. Shaterina. Polytechnic Publishing House. St. Petersburg. 2005, p. 333). But this method is used to obtain holes, and not to obtain hollow cylindrical products, and several.

The aim of the invention is to obtain a hollow cylindrical products with the most complete use of the workpiece material and with the least energy consumption per unit product.

The essence of the invention is to obtain several hollow cylindrical products (hollow cylinders) from one workpiece in the form of a log or block, and to obtain the second and subsequent hollow cylinders, the workpiece material is used inside the cavity of the hollow cylinders already obtained, with the exception of cut layers. For this, the workpiece is installed in a processing machine. Then, from the end, the workpiece begins to be processed with a tool that can cut an annular cavity along the length of the workpiece inside this workpiece, for example, with an annular drill, or a laser beam, or other tool. Thus, the first hollow cylinder is obtained - between the outer surface of the workpiece and the surface formed by the tool along its outer cylindrical contour. In this case, an annular cavity carved by the tool of a certain thickness and length is formed depending on the design of the tool, and the workpiece material remains, with the exception of the first hollow cylinder and the annular cavity. A smaller diameter tool is then used, through which a second hollow cylinder is obtained. And so on, until the minimum required hollow cylinder is obtained. The result is coaxial hollow cylinders. Finally, individually, hollow cylinders are obtained by cutting them with a cross section at a certain depth. Moreover, all hollow cylinders can be obtained from a single installation of the workpiece on the machine.

The invention is illustrated by drawings (figures 1, 2, 3).

The invention is illustrated by the following example.

Take a block of linden with a diameter of 320 mm and a length of 400 mm. Clamped in the machine from the left side to the cross section AA (figure 1). It is assumed that the cutting of hollow cylinders in the workpiece is carried out by ring drills 4; that the cut annular cavities have an average thickness of, for example, 7 mm; that the depth of the annular cavity is, for example, 300 mm

The process begins with cutting the first hollow cylinder 1 of size I (Fig. 1). The wall thickness of the hollow cylinder is selected constructively. In the illustrated example, select the thickness of the first hollow cylinder 1 equal to, for example, 18 mm

Then, the second hollow cylinder 1 of size II is cut (Fig. 1) with a wall thickness of, for example, 16 mm.

And so on, until the hollow cylinder 1 has the minimum diameter required.

In the illustrated example, we got 7 sizes - I, II, III, IV, V, VI, VII - hollow cylinders 1 (figure 1).

Separately, the hollow cylinders 1 are obtained by cross-section along the plane AA (FIG. 1) by any known method.

Caskets, barrels, barrels are obtained in finished form after attaching to the obtained hollow cylinders 1 bottoms 2 and lids 3 (figure 2).

Moreover, the lengths of the sizes of caskets, barrels, barrels can be:

- reduce due to additional cutting of the hollow cylinders 1;

- increase due to the increment of the hollow cylinders 1 of one size (figure 3).

Using the proposed method for producing hollow cylindrical products will significantly increase resource conservation.

Claims (2)

1. A method of obtaining a hollow cylindrical product from a workpiece in the form of a log or block, comprising obtaining one hollow cylindrical product, characterized in that the material of the workpiece inside the obtained hollow cylindrical product with the exception of the cut layer serves to obtain the next second hollow cylindrical product, then the remaining material inside the second hollow cylindrical product is used to obtain a third hollow cylindrical product and so on until the minimum size required the diameter of the hollow cylindrical product. 2. The method of producing hollow cylindrical products according to claim 1, characterized in that the hollow cylindrical products are obtained from a single installation on the machine by cutting cylindrical surfaces, for example, ring cutters of different sizes or a laser beam to a certain depth, and then cutting all received hollow cylinders cross section.

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