CN202667985U - Flame cutting fixture for heavy mining chain wheels - Google Patents

Abstract

The utility model relates to a flame cutting fixture device, in particular to a flame cutting fixture for a heavy-duty mine sprocket. At present, the tooth shape of the heavy-duty mining sprocket is machined, and it needs to be aligned after marking, which increases the auxiliary man-hours, low production efficiency and high cost. The utility model is composed of a base, a lower flange, a protective plate, an upper flange, positioning pins and connecting bolts, and direction discrimination angles are arranged on the upper and lower flanges. The base is fixed on the ground, and the positioning pin A is inserted into the pin hole on the edge of the table top of the base; the upper and lower flanges have the same structure, the long straight sides are installed in opposite directions, and the short straight sides are installed opposite to each other after aligning with the center punching line of the sprocket. The wheel is placed between the upper and lower flanges, fixed together with two connecting bolts and nuts, placed on the upper table of the base, and the positioning pin B passes through the pin holes of the upper and lower flanges and inserted into the corresponding hole on the upper table of the base. The utility model has the advantages of simple assembly, correct and convenient cutting of the sprocket tooth profile, and high efficiency.

Description

Heavy Duty Mining Sprocket Flame Cutting Jig

technical field

The utility model relates to a flame cutting fixture device, in particular to a flame cutting fixture for a heavy-duty mine sprocket.

Background technique

At present, the tooth shape of the heavy-duty mining sprocket is machined. It needs to be marked and then aligned. The cycle is long, the production cost is high, and the processing quality of the workpiece is difficult to guarantee, which cannot meet the needs of mass production now.

Contents of the invention

The purpose of the utility model is to provide a tooling fixture for the flame cutting sprocket tooth shape, replacing the traditional processing technology.

Contents of the invention

The technical scheme adopted by the utility model to solve its technical problems is: it is composed of a base, a positioning pin A, a lower flange, a protective plate, a connecting bolt, a nut, an upper flange, and a positioning pin B. The upper flange, the lower There is a direction discrimination angle on the flange; the base is set in a hollow circular truncated shape, and the positioning pin A is inserted into the pin hole on the edge of the upper table of the base; the upper flange and the lower flange have the same structure, and are composed of two connecting bolts and nuts Fix them together and place them on the upper table of the base. The outer circle of the positioning pin A is in contact with the outer circle of the flange on it; there is a pin hole on the left and right of the upper flange and the lower flange, and the positioning pin B passes through it. The pin hole is inserted into the corresponding hole on the table top of the base; the protective plate is composed of two semi-circular rings, which are overlapped by T-shaped steps to form a circle, placed in the groove of the processing sprocket, and the inner circle is attached to the groove of the processing sprocket. bottom of the tank wall.

Further, the direction discrimination angle of the upper and lower flanges is a long straight side and a short straight side arranged on the edge of the flange, and the long straight side is perpendicular to the short straight side.

Further, the upper end of the positioning pin B is welded with a bracelet.

The beneficial effects of the utility model are: the assembly of the tooling and the sprocket is simple and easy to operate; during the cutting process, the tooling can ensure that the workpiece is placed stably and does not move, ensuring the verticality of the flame cutting line; CNC program, the front and back sides are cut separately, and the direction discrimination angle is designed on the flange of the tooling to ensure that the tooth shape is not out of place when cutting the back side, and it is easy to use; the high temperature resistant stainless steel is used as the guard plate to ensure that there is no blowing in time. The cutting slag will not hurt the surface of the sprocket. The correctness, convenience and practicability of sprocket tooth profile cutting are guaranteed.

Description of drawings

Below in conjunction with accompanying drawing and implementation method, the utility model is further described.

Fig. 1 is the sectional view of the utility model heavy-duty mining sprocket flame cutting fixture;

Fig. 2 is the top view of the utility model heavy-duty mining sprocket flame cutting fixture;

Fig. 3 is the structural diagram of the lower flange of the utility model;

Fig. 4 is a structural diagram of the upper flange of the present invention.

Detailed ways

In the figure: 1. base, 2. locating pin A, 3. lower flange, 4. protective plate, 5. connecting bolt, 6. nut, 7. upper flange, 8. locating pin B.

From Figures 1 to 4, it can be seen that the heavy-duty mining sprocket flame cutting fixture is composed of base 1, positioning pin A, lower flange 3, protective plate 4, connecting bolt 5, nut 6, upper flange 7, and positioning pin B , the upper and lower flanges are provided with direction discrimination angles; the base 1 is set as a hollow truncated cone, and is fixed on the ground with four expansion bolts; the positioning pin A 2 is inserted into the pin hole on the edge of the upper table of the base 1; the upper flange 7. The lower flange 3 has the same structure, and is fixed together by two connecting bolts 5 and nuts 6 at the front and rear. It is placed on the upper table of the base 1, and the outer circle of the positioning pin A 2 is in contact with the outer circle of the flange on it; The upper flange 7 and the lower flange 3 are respectively provided with a pin hole, and the positioning pin B 8 is inserted into the corresponding hole on the upper table of the base 1 through the pin hole; The shaped steps are overlapped to form a circle, placed in the groove of the processing sprocket, and the inner circle is attached to the bottom of the groove wall of the processing sprocket.

The direction discrimination angle of the upper and lower flanges is the long straight side and the short straight side arranged on the edge of the flange, and the long straight side is perpendicular to the short straight side. Described positioning pin B (8), the upper end is welded with bracelet.

When working, use four expansion bolts to install and fix the base 1 on the ground. When installing the base 1, ensure that the upper surface is horizontal, and ensure that the perpendicularity between the radial reference and the guide rail of the cutting machine is ≤1mm.

First assemble the two flanges with the processing sprocket, the center line of the lower flange 3 and the upper flange 7 must be aligned with the marked center line of the sprocket section, and the short straight sides of the two direction angles must be aligned with the The central sample punching line coincides, this position is the arc starting point of the flame cutting CNC machine tool, the CNC cutting torch cuts counterclockwise, the long straight sides of the upper and lower flanges must be installed in opposite directions, and the long straight sides of the upper flange 7 are forward, that is Rotating from the short straight side of the direction discrimination angle to the long straight side is counterclockwise rotation; the position of the sprocket edge corresponding to the short straight side of the flange is the arc starting point of the flame cutting CNC machine tool, and the running direction of the CNC cutting torch is always counterclockwise Run; make the outer circle of the positioning pin A contact the outer circle of the lower flange 3; the positioning pin B passes through the pin holes of the left and right flanges and inserts it into the corresponding hole on the upper table of the base 1 to fix the sprocket on the base 1; the protective plate 4 Put it between the grooves of the cutting sprocket, the inner circle sticks to the wall of the mining sprocket, and start cutting the upper tooth profile of the mining sprocket. After cutting the upper tooth shape of the sprocket, take out the protective plate 4, pull out the positioning pin B, turn the assembled flange plate and the sprocket over, and make the long straight edge of the lower flange plate 3 forward, so that the outer circle of the positioning pin A Contact with the outer circle of the upper flange 7; the positioning pin B passes through the pin holes of the left and right flanges and inserts it into the corresponding hole on the upper table of the base 1 to fix the sprocket on the base 1; the protective plate 4 is placed in the groove of the cutting sprocket During this period, the inner circle sticks to the wall of the mining sprocket, and the cutting of the lower tooth profile of the mining sprocket starts. It can ensure the complete alignment of the cutting tooth shape under the condition that the cutting procedure on both sides remains unchanged.

Claims (3)

1. A heavy-duty mining sprocket flame cutting fixture is characterized in that: it consists of a base (1), a positioning pin A (2), a lower flange (3), a protective plate (4), a connecting bolt (5), Nut (6), upper flange (7), positioning pin B (8), the upper flange (7) and lower flange (3) are provided with direction discrimination angle; the base (1) is set as hollow Conical truncated, the positioning pin A (2) is inserted into the pin hole on the edge of the upper table of the base (1); the upper flange (7) and the lower flange (3) have the same structure, and are composed of two connecting bolts (5), The nuts (6) are fixed together and placed on the upper table of the base (1), and the outer circle of the positioning pin A (2) is in contact with the outer circle of the flange on it; the upper flange (7), the lower flange (3) There is a pin hole on the left and right sides, through which the positioning pin B (8) is inserted into the corresponding hole on the upper table of the base (1); Lap to form a circle, place it in the groove of the processing sprocket, and stick the inner circle to the bottom of the groove wall of the processing sprocket. 2. The heavy-duty mining sprocket flame cutting fixture according to claim 1, characterized in that: the direction discrimination angle of the upper and lower flanges is the long straight side and the short straight side arranged on the edge of the flange, and the long straight side The sides are perpendicular to the short straight side. 3. A kind of heavy-duty mining sprocket flame cutting fixture as claimed in claim 1, characterized in that the upper end of the positioning pin B (8) is welded with a bracelet. the

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