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Corner cutting in stone processing is a common stone processing procedure. Proper corner cutting method can get twice the result with half the effort.

1, multi-slice oblique cutting

It is not difficult to see that many lines are cut at an oblique angle of 45 degrees, and the processing efficiency of this method is obviously many times that of single-chip cutting.

2. Two pieces are cut symmetrically

In this way, a pair of backboards with an included angle of 90 degrees should be made in advance, and the line to be cut should be 90 degrees with the end face along the two sides of the backboard. After the knife is aligned, the corner cutting part should be cut off, and two lines with symmetrical angles can be cut at a time. This method is only suitable for cutting lines with symmetrical angles. If the workbench allows, you can cut 4 or 8 lines at the same time.

3. Cutting angle under special circumstances

This line should be cut at an angle of 45 degrees. When the height and bottom are too large for the blade to cut, we must change the angle cutting method. The new angle cutting method is to put the line horizontally, rotate the workbench at a certain angle, rotate the blade at a certain angle, and adjust the position relationship between the blade and the line before angle cutting.

The process of corner cutting in stone product processing is very common, but it is also very important. The quality of cutting angle directly affects the installation quality of processed products. The cutting angle does not meet the quality requirements, resulting in the inability to install the product or the excessive installation gap, which has a very adverse impact on the site construction and slightly affects the site construction progress. In serious cases, it will lead to the tension between the supplier and the construction party, which is not conducive to the smooth development of the project.

The appellation of angle in construction is different from the concept of "angle" in our daily life. But they are also closely related to each other. The name of angle in geometry refers to the measurement of the amount that must be rotated when either of two intersecting lines overlaps with the other intersecting line. Rotation is carried out around the intersection point on the plane where the two lines are located.

First, the name of the corner in stone processing

1. Yang angle: The convex angle formed by installing two plates or two wires is called Yang angle. See figure 1. Usually, the angle of a square column is a positive angle. 2. Internal angle: After two boards or two lines are installed at tangent angles, the concave angle formed is the internal angle. See figure 2. Usually, the angle formed by adjacent indoor walls is the internal angle.

3. Arc angle: the included angle formed by arc edge and chord length. As shown in figure 3.

4. End face angle: the thickness of the line at a certain angle to the end face of the line.

Degree direction, the tangent end face angle starts from the end of the end face, and cutting a part along the length direction is called tangent end face angle. As shown in figure 4.

5. Three-dimensional irregular angle: This is a troublesome angle cutting method in stone processing and a special form of tail cutting angle. As can be seen from Figure 5, the so-called solid angle is a special case of the end angle of the cut line after the bottom surface of the line forms a certain angle with the workbench. As can be seen from the decorative drawing on the right of Figure 5, this line is not on the same elevation as the installed decorative surface, but on another decorative surface, that is, in the so-called three-dimensional space.

6. Plane special-shaped angle: when machining special-shaped plates with various geometric figures, the angle formed by cutting off adjacent edges and cutting off edges and adjacent edges. See figure 6.

7. Spiral rising angle of spiral staircase: spiral angle of spiral staircase. See fig. 7.

8. Corner: the angle connecting different facades. See fig. 8.

9. Bottom corner: A part of the bottom of the cut line is called the bottom corner. See fig. 9.

L0。 Off-angle: a part of the front of the line is cut off at a certain angle along the thickness direction of the line from a certain position on the front of the line end face, which is called off-angle. See figure 10.

The end face angle, off-center angle and off-center angle are actually the same, but the chamfering method is changed due to the change of the thickness and width of the workpiece.

Second, the tangent angle diagram

A diagram reflecting the relationship between tangent angles of adjacent products. Usually the cutting angle is 45 degrees. 、60。 、67.5。 Mostly. Especially to cut 45. Most corners.

1. The tangent angle diagram of the crural line or waistline of the wall is shown in figure 1 1.

Corner cutting elements that should be marked in the corner cutting diagram:

(1) line segment details;

② Display the internal and external directions of line detail installation. Can it be used on the floor plan? Indicates the installation direction of the outer surface or smooth surface of the line; You can also use Chinese characters for "outside" and "inside" to indicate the installation of glossy surface.

Direction;

③ Angle of cutting angle;

④ Installation number;

⑤ Installation dimensions.

2. See figure 12 for the arctangent angle diagram.

Common tangent diagrams include three tangent diagrams, four tangent diagrams and six tangent diagrams. The cutting angles are 30 respectively. 、45。 、60。 . Corner cutting elements that should be marked in the corner cutting diagram:

(1) Angle of chamfer;

② Length of inner and outer chords. The inner arc represents the chord length of the inner arc and the outer arc represents the chord length of the outer arc;

3 use? Indicates the internal and external directions of the light surface;

④ The number and order of splicing relationships. Use English letters or Arabic numerals, and use → to indicate the direction of splicing sequence.

3. Three-dimensional corner cutting diagram

(1) line segment details

② Signs indicating the inside and outside directions of line detail installation. You can use-on the plan to indicate the installation direction outside the line or glossy surface, and you can also use Chinese words "outside" and "inside" to indicate the installation direction of the line glossy surface;

③ Angle of cutting angle;

④ Installation number;

⑤ Angle between line details and vertical direction;

⑥ Installation dimension.

4. See the door cover cut in Figure 14.

5. See Figure 15 for the schematic diagram of square column cutting angle.

(1) line segment details;

② Installation number and direction number;

③ Indication of internal and external directions of line detail installation;

④ Mark the line width on the section.

6. See Figure 16 for the schematic diagram of the corner cutting of the rotating staircase.

3. Jerry-building methods

1. template method.

Compared with standard template chamfering, it is mostly used for chamfering some irregular and irregular products such as conical arc plate, spiral staircase, arc column seat, column head, bent line and oval plate.

2. Bottom die lining method;

Mostly used for three-dimensional corner cutting, this method is very useful.

3. Symmetry method.

Place the product processing workpiece symmetrically left and right. This method can improve the efficiency of corner cutting and cut two pieces across the board. However, it should be noted that there are two kinds of cutting angles in this method, which can only be used for cutting angles in both directions.

4. Parallel method, as shown in figure 19.

Arrange multiple products in parallel, as shown in figure 19. Using this method to cut corners conforms to the principle of optimal processing technology and can greatly improve production efficiency.

5. Shear method

This method can not only improve the efficiency of corner cutting, but also improve the yield of main materials. Pay attention to increase the margin of tool thickness in the length direction when cutting.

Fourth, the cutting angle of mechanical equipment

1. Electronic bridge breaker. If you can lift it, you'd better work, so that the depth of corner cutting can be deeper;

2. Small cutting machine (middle bed/cutting machine);

3. 1200 circular saw. Used for chamfering large workpieces;

4. Vertical chamfering machine with rotatable nose;

5. Other machine tools that can cut plates. Stone Research Association (micro-signal stone5A)

When any product is chamfered, the operator must make the corresponding positioning backboard. Tangent angle positioning method refers to the description of "three" tangent angle method. In addition, you can draw the required angle by three-dimensional drawing in Autocad, and then establish X, Y and Z coordinate planes on AC, G and CE F with three-point fixed surfaces in Autocad, and measure the required angle with angle labeling.

Five, the quality requirements of cutting angle

1. Error of door cover and cutting angle: 0.5. ;

2. Error of cutting angle of column foot and stigma: 0.5. . When the column foot and the end face of the column head see light, the error is 0;

3. Cutting angle of circular arc plate: 0.5. . When the end face of the circular arc plate sees light, the error is 0;

4. The cutting angle of circular arc plate should be checked against the cutting angle template;

5. Slip Angle/Slip Angle Error: 1-2. . When the side of the plate or wire sees light, the error is 0.

Reference: "Chamfering Technology in Stone Processing"

Author: Yan Hui

Title: Stone

Year, volume (period): 20 1 1( 10).

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