Welding positioning tool for electric furnace hydraulic band-type brake positioning sleeve

Abstract

The invention relates to the technical field of mechanical manufacturing tools, in particular to an electric furnace hydraulic band-type brake positioning sleeve welding positioning tool. The tool comprises an upper flat plate and a lower flat plate which are parallel and supported by a frame, the front ends of the two flat plates are convex arc surfaces matched with arc surfaces on the inner edges of upper and lower ring surfaces of a workpiece ring seat, a vertical facade at the front end of the frame is used for being tightly attached to and positioned with the end face of a round pipe of a positioning sleeve, and a section of transverse pipe is arranged at the rear end of the frame and movably connected with a positioning steel ball in an abutting mode; the positioning steel ball is provided with a screw which is movably connected with the end face of the positioning round pipe through threads. The convex arc surfaces of the upper flat plate and the lower flat plate are matched and abutted with the inner edge of the ring seat, so that horizontal contact between the tool and the ring seat is guaranteed, perpendicularity of the tool and the ring seat is guaranteed, perpendicularity and concentricity of the positioning sleeve are guaranteed, precision of the positioning sleeve can be well guaranteed, technical requirements of workpieces can be well met, labor intensity of operators is greatly reduced, working time is shortened, and production efficiency is improved. And the positioning efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical manufacturing tooling, namely, a welding positioning tooling for the hydraulic brake positioning sleeve of an electric furnace. Background Art

[0002] In the prior art, the electric furnace ring seat is a device installed on the electric furnace holder. Its main function is to hold the molten steel electrode column, enabling the molten electrode to stably move into the furnace (see Figure 3 ). The hydraulic brake positioning sleeve of the electric furnace is horizontally installed on the cylinder skin between the upper and lower surfaces of the ring seat and penetrates into and exposes a certain distance from the inner cylinder skin. Six are evenly horizontally arranged along the circumference of the ring seat and are welded and connected. It is required that the exposed distances of the positioning sleeves inside the ring seat are equal, and at the same time, the six positioning sleeves are perpendicular to the cylinder skin. The ring seat has upper and lower ring surfaces and a protruding inner edge. Assembling the hydraulic brake positioning sleeve of the electric furnace ensures that the levels and exposed distances are equal after the positioning sleeve is welded and installed. In the past, generally, a tape measure and a 90° square were used to determine the dimensions, then the installation positions of the positioning sleeves on the ring seat were determined, and then the positioning sleeves were welded and installed on the ring seat, and then processing was carried out. Here, mainly when welding and installing the positioning sleeves, in the absence of a suitable tooling, the only way to align by manually measuring and marking lines is extremely inefficient. Since the positioning sleeve is made of 45# steel and has a relatively thick wall thickness, it is extremely difficult to handle and align. In actual production, the assembly time for a single set is much longer than the welding time. Summary of the Invention

[0003] The purpose of the present invention is to provide a welding positioning tooling for the hydraulic brake positioning sleeve of an electric furnace that enables rapid positioning and is labor-saving and efficient in view of the above deficiencies.

[0004] The technical solution of the present invention is: A welding positioning tooling for the hydraulic brake positioning sleeve of an electric furnace includes two parallel flat plates supported by a frame. The front ends of the two flat plates are convex arc surfaces that fit the inner arc surfaces of the upper and lower ring surfaces of the workpiece ring seat. The vertical facade at the front end of the frame is used to tightly fit and position the end face of the positioning sleeve round tube. There is a horizontal tube at the rear end of the frame, and the horizontal tube is in movable abutment with a positioning steel ball; the positioning steel ball is provided with a screw rod, and the screw rod is movably connected to the end face of the positioning round tube through threads.

[0005] In the above solution, it further includes: The flat plate protrudes forward from the frame by a certain distance, and this distance plus the protruding distance of the inner edge is equal to the distance that the positioning sleeve exposes from the inner circular facade of the ring seat.

[0006] A locking nut is fixed between the positioning steel ball and the screw rod.

[0007] The advantages of the present invention are as follows: By using the upper and lower flat convex arc surfaces to fit and abut against the inner edge of the ring seat, it ensures the horizontal contact between the tooling and the ring seat and also ensures the perpendicularity of the tooling and the ring seat. When assembling the positioning sleeve, the original horizontal and vertical alignment methods are omitted. This tooling utilizes the inner circular machining surface of the ring seat to quickly locate its center, ensuring the perpendicularity and concentricity of the positioning sleeve, and can well guarantee its accuracy, meet the technical requirements of the workpiece, greatly reduce the labor intensity of the operator and shorten the working time. The positioning efficiency is about 5 times that of the original alignment method.

[0008] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Description of the Drawings

[0009] Figure 1 is a schematic structural diagram of the present invention.

[0010] Figure 2 is Figure 1 a three-dimensional structural schematic diagram.

[0011] Figure 3 is a schematic structural diagram of the workpiece ring seat.

[0012] Figure 4 is a schematic structural diagram of the use state.

[0013] In the figure, the names of the components are as follows: frame 1, flat plate 2, convex arc surface 3, cross tube 4, positioning steel ball 5, screw rod 6, positioning round tube 7, locking nut 8, inner edge 9, positioning sleeve 10, ring seat 11, ring surface 12, vertical facade 13, cylinder skin 14, inner cylinder skin 15. Specific Embodiments

[0014] See Figures 1-4 , the electric furnace hydraulic brake positioning sleeve welding and positioning tooling, including two parallel flat plates 2 supported by a frame 1, and the two flat plates 2 are perpendicular to the front and rear surfaces of the frame 1. The front ends of the two flat plates 2 are convex arc surfaces 3 that fit the arc surfaces of the inner edges 9 of the upper and lower ring surfaces of the workpiece ring seat 11. The vertical facade 13 at the front end of the frame 1 is used to tightly fit and position the end face of the round tube of the positioning sleeve 10. After being tightly fitted, the positioning sleeve 10 is in a horizontal position. There is a section of cross tube 4 at the rear end of the frame 1, and the cross tube 4 is in movable abutment with the positioning steel ball 5. The positioning steel ball 5 is provided with a screw rod 6, and the screw rod 6 is movably connected to the end face of the positioning round tube 7 through threads. The positioning steel ball 5 is welded integrally with the locking nut 8, and the locking nut 8 is welded integrally with the screw rod 6. Rotating the locking nut 8 drives the screw rod 6 to move in and out of the positioning round tube 7, realizing the adjustable distance between the positioning round tube 7 and the cross tube 4, and having the function of tightly pressing and locking this tooling with the ring seat 11 to prevent movement. The rear end of the cross tube 4 is arranged to slope downwards, facilitating the movable abutment with the positioning steel ball 5 and the oblique abutment of the positioning round tube 7, with good connection effect. The flat plate 2 protrudes forward from the frame 1 by a certain distance, and this distance plus the protruding distance of the inner edge 9 is equal to the distance that the positioning sleeve 10 exposes the inner cylinder skin 15 of the ring seat.Figure 1 In this case, a positioning sleeve 10 is drawn on the front of the device. Actually, the positioning sleeve 10 is a workpiece and not a component of the device.

[0015] Usage method: Before assembling the positioning sleeve 10, the center line of the round hole has been drawn on the toroidal surface 12 and the center line has also been drawn on the flat plate 2. First, place the ring seat 11 on the assembly platform, then align the convex arc surface 3 on the frame 1 with the inner edge 9 (center line to center line) and press them tightly together. Then, connect the positioning steel ball 5 to the horizontal pipe 4, and the rear end of the positioning round pipe 7 abuts against the lower end of the inner cylinder skin 15. Adjust the locking nut 8 so that the positioning round pipe 7 is pressed tightly between the horizontal pipe 4 and the inner cylinder skin 15. Thus, the support of this tooling is set up.

[0016] Insert the positioning sleeve 10 (formed by welding a section of round pipe and a rear vertical plate) into the inner cylinder skin 15 through the positioning sleeve hole on the cylinder skin 14 (six positioning sleeve holes are evenly arranged along the ring seat 11, slightly larger than the outer diameter of the positioning sleeve 10), and press the end face of the round pipe of the positioning sleeve 10 tightly against the vertical surface 13 on the frame 1. At this time, the positioning sleeve 10 is horizontal, and the exposed length in the ring seat 11 is limited by the vertical surface 13. At this time, the distance exposed from the inner cylinder skin 15 meets the requirements. After pressing tightly together, spot-weld the positioning sleeve 10 to the cylinder skin 14 and the inner cylinder skin 15 to ensure the positioning of the positioning sleeve 10. The assembly of the first positioning sleeve 10 is completed. The remaining five positioning sleeves 10 are assembled in sequence, and finally welded and subjected to subsequent processing.

[0017] This device simplifies the operation, saves labor costs, has high positioning accuracy, can fully meet the technical requirements of the drawing, has stable positioning, shortens the average working hours of a single product, greatly reduces the labor intensity of the operator, and improves labor efficiency. It is suitable for application on most of the assembled brake positioning sleeves.

[0018] The above description is only the specific implementation mode of the present invention, and various examples do not constitute a limitation to the essence of the present invention.

Claims

1. Electric furnace hydraulic brake positioning sleeve welding positioning tooling, characterized in that It includes two parallel upper and lower flat plates (2) supported by a frame (1). The front ends of the two flat plates (2) are convex arc surfaces (3) that fit the arc surfaces of the inner edges (9) of the upper and lower annular surfaces of the workpiece ring seat (11). The vertical facade (13) at the front end of the frame (1) is used to tightly fit and position against the end face of the circular tube of the positioning sleeve (10). There is a horizontal tube (4) at the rear end of the frame (1), and the horizontal tube (4) is in movable abutment with the positioning steel ball (5). The positioning steel ball (5) is provided with a screw rod (6), and the screw rod (6) is movably connected to the end face of the positioning circular tube (7) through threads.

2. The electric furnace hydraulic brake positioning sleeve welding positioning tooling according to claim 1, characterized in that The flat plate (2) projects forward from the frame (1) by a certain distance, and this distance plus the protruding distance of the inner edge (9) is equal to the distance that the positioning sleeve (10) exposes the inner circular facade of the ring seat (11).

3. The electric furnace hydraulic brake positioning sleeve welding positioning tooling according to claim 1 or 2, characterized in that A locking nut (8) is fixed between the positioning steel ball (5) and the screw rod (6).

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