Thin-wall pipe arc machining device

Abstract

The utility model discloses a thin-wall pipe arc machining device, which belongs to the technical field of pipe machining and comprises a working bottom plate, a fixed shaft arranged on the working bottom plate, a rotating shaft movably sleeved on the fixed shaft and an F-shaped handle arranged above the rotating shaft and movably sleeved on the fixed shaft. A plurality of positioning holes are formed beside the fixed shaft on the working bottom plate; and the positioning pins are detachably mounted in the positioning holes. The circular arc machining device is simple in structure, convenient to use and low in cost, the circular arc machining device can be manufactured by using leftover materials of factories, and due to the arrangement of the positioning holes, the circular arc machining device can be suitable for machining pipes with different pipe diameters, and the pipes can be rapidly and effectively machined.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe processing, in particular to a device for processing the arc of thin-walled pipes. Background Art

[0002] In actual mechanical applications, the need to process the arc of thin-walled pipes with a small diameter often arises. The traditional methods are hot bending or using a pipe bender to make arcs. However, deformation occurs frequently when using hot bending to process the arc of thin-walled pipes with a small diameter. This is mainly due to the following reasons:

[0003] Thermal deformation: When the pipe is heated to a certain temperature, its metal structure becomes soft and is prone to plastic deformation. If the heating is uneven or the temperature control is improper, the pipe is likely to produce irregular deformation during the bending process.

[0004] Temperature control: During the hot bending process, temperature control is crucial. Excessive temperature may cause the material to be too soft, prone to excessive deformation or collapse; too low temperature may make it difficult to bend the material and even cause cracks.

[0005] Although using a pipe bender to make arcs can carry out this operation smoothly, the existing pipe benders have complex structures and inconvenient operations. Especially for small-scale enterprises, the cost is a bit too high.

[0006] Therefore, there is an urgent need for a device for processing the arc of thin-walled pipes, which can perform arc processing quickly and has a simple structure. Content of the Utility Model

[0007] The technical problem to be solved by the utility model is to provide a tool for processing the arc of thin-walled pipes with a small diameter, so as to achieve the purpose of quickly and effectively processing the pipes.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A device for processing the arc of thin-walled pipes includes a working base plate, a fixed shaft arranged on the working base plate, a rotating shaft sleeved on the fixed shaft, and an F-shaped handle arranged above the rotating shaft and movably sleeved on the fixed shaft. A plurality of positioning holes are arranged beside the fixed shaft on the working base plate, and positioning pins are installed in the positioning holes in a detachable manner.

[0010] The further improvement of the technical solution of the utility model lies in that: the F-shaped handle includes a hollow first cross bar sleeved on the fixed shaft and a second cross bar with a length greater than that of the first cross bar.

[0011] A further improvement of the technical solution of the present utility model lies in that: the rotating shaft is a cylinder provided with a central hole adapted to the fixed shaft at the center, the side wall of the rotating shaft is arc-shaped or V-shaped, the side wall of the second cross bar is arc-shaped, and the sizes of the rotating shafts are set in multiple according to different radii.

[0012] A further improvement of the technical solution of the present utility model lies in that: the horizontal distances between different positioning holes and the fixed shaft are different, and at the same time, the vertical distances between different positioning holes and the edge of the working bottom plate are also different.

[0013] A further improvement of the technical solution of the present utility model lies in that: an annular groove adapted to the pipe diameter of the first cross bar of the F-shaped handle is provided near the central hole in the middle of the rotating shaft, and the depth of the annular groove is 1 / 3 to 2 / 3 of the height of the rotating shaft.

[0014] A further improvement of the technical solution of the present utility model lies in that: a lubricating layer is provided closely against the inner wall of the annular groove in the annular groove, and the lubricating material used for the lubricating layer includes lubricating oil and polytetrafluoroethylene.

[0015] A further improvement of the technical solution of the present utility model lies in that: the positioning pin and the positioning hole are connected by threaded connection or socket connection.

[0016] Due to the adoption of the above technical solution, the technical progress obtained by the present utility model is:

[0017] The arc processing device for thin-walled pipes of the present application has a simple structure, is convenient to use, and has a low cost. The production of the arc processing device of the present application can be completed by using the scrap materials of the factory, and the setting of the positioning holes of the present application can be applicable to the processing of pipes with different pipe diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of an arc processing device for thin-walled pipes of the present utility model;

[0019] Figure 2 is a schematic diagram of the F-shaped handle of the present utility model;

[0020] Figure 3 is a top view of the rotating shaft of the present utility model;

[0021] Figure 4 is a cross-sectional view of the rotating shaft of the present utility model;

[0022] Among them, 1. Working bottom plate, 2. Positioning hole, 3. Positioning pin, 4. Fixed shaft, 5. Rotating shaft, 5-1. Annular groove, 5-2. Lubricating layer, 6. F-shaped handle, 6-1. First cross bar, 6-2. Second cross bar, 7. Pipe to be processed. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present utility model in detail with reference to the embodiments:

[0024] As shown Figure 1 Figure 1

[0025] The F-shaped handle (6) includes a hollow first cross bar (6-1) sleeved on the fixed shaft (4), a second cross bar (6-2) with a length greater than that of the first cross bar (6-1), and a vertical handle rod fixedly connected to the first cross bar (6-1) and the second cross bar (6-2).

[0026] A cylinder with a central hole adapted to the fixed shaft (4) is provided with the rotary shaft 5 as the center. The side wall of the rotary shaft (5) is arc-shaped or V-shaped, and the side wall of the second cross bar (6-2) is arc-shaped. The sizes of the rotary shafts (5) are provided in multiple according to different radii. The rotary shaft 5 is used to facilitate the bending of the pipe fitting 7 to be processed when processing an arc, and at the same time, the pipe fitting 7 to be processed can be clamped and not displaced. Theoretically, the arc-shaped groove on the side wall of the rotary shaft 5 can be a semi-circle, but considering the strength problem of the rotary shaft 5, its arc-shaped side wall is selected to be slightly less than a semi-circle in radian, or in a V shape, so that both the processing of the pipe fitting arc and the strength can be increased.

[0027] Regarding the setting of the positions of the positioning holes 2, the horizontal distances between different positioning holes (2) and the fixed shaft (4) are different, and the vertical distances between different positioning holes (2) and the edge of the working base plate (1) are also different. That is, the positioning holes 2 are neither on a horizontal line nor on a vertical line. Then, the position of the positioning pin (3) can be determined according to the position of the positioning hole 2. According to the pipe diameter of the pipe fitting 7 to be processed, a suitable positioning hole 2 is selected to fix the positioning pin 3, and a suitable rotary shaft 5 is also selected. Therefore, the device of the present application can be applied to pipe fittings with different pipe diameters. The connection method between the positioning pin 3 and the positioning hole 2 can be selected in various ways, including threaded connection and socket connection, and other detachable methods are also possible.

[0028] In a preferred embodiment, an annular groove (5-1) adapted to the pipe diameter of the first cross bar (6-1) of the F-shaped handle (6) is provided near the center hole in the middle of the rotary shaft (5), and the depth of the annular groove (5-1) is 1 / 3 to 2 / 3 of the height of the rotary shaft (5).

[0029] A lubricating layer (5-2) is provided closely against the inner wall of the annular groove (5-1) in the annular groove (5-1). The lubricating material used for the lubricating layer (5-2) includes lubricating oil and polytetrafluoroethylene. The lubricating layer 5-2 enables the first cross bar 6-1 of the F-shaped handle (6) to rotate smoothly in the annular groove 5-1 without resistance.

[0030] Usage method:

[0031] According to the diameter of the pipe to be processed, select to insert the positioning pin 3 into the positioning hole 2 at a suitable position, and select a rotating shaft 5 of a suitable size. Before use, insert the pipe to be processed between the positioning pin 3 and the rotating shaft 2, insert the integrated handle into the fixed shaft 4, and at the same time clamp the pipe between the first cross bar 6-1 and the second cross bar 6-2 of the F-shaped handle 6. By turning the F-shaped handle 6 forcefully, the purpose of processing a suitable arc can be achieved.

Claims

1. A thin-walled pipe arc processing device, characterized in that: The invention comprises a working base plate (1), a fixed shaft (4) arranged on the working base plate (1), a rotating shaft (5) movably sleeved on the fixed shaft (4), and an F-shaped handle (6) arranged above the rotating shaft (5) and movably sleeved on the fixed shaft (4). A plurality of positioning holes (2) are arranged beside the fixed shaft (4) on the working base plate (1), and positioning pins (3) are detachably mounted in the positioning holes (2).

2. The thin-walled pipe arc processing device according to claim 1, characterized in that: The F-shaped handle (6) comprises a hollow first crossbar (6-1) sleeved with a fixed shaft (4) and a second crossbar (6-2) having a greater length than the first crossbar (6-1).

3. The thin-walled pipe arc processing device according to claim 2, characterized in that: Said The rotating shaft (5) is a cylinder with a central hole adapted to fit the fixed shaft (4) at the center, the side wall of the rotating shaft (5) is arc-shaped or V-shaped, the side wall of the second cross bar (6-2) is arc-shaped, and the size of the rotating shaft (5) is set in multiples according to different radii.

4. The thin-walled pipe arc processing device according to claim 1, characterized in that: The horizontal distances between different positioning holes (2) and the fixed shaft (4) are different, and the vertical distances between different positioning holes (2) and the edge of the working base plate (1) are also different.

5. A thin-walled pipe arc processing device according to any one of claims 1 to 4, characterized in that: An annular groove (5-1) adapted to the diameter of the first crossbar (6-1) of the F-shaped handle (6) is provided in the middle of the rotating shaft (5) near the central hole, and the depth of the annular groove (5-1) is 1 / 3 to 2 / 3 of the height of the rotating shaft (5).

6. The thin-walled pipe arc processing device according to claim 5, characterized in that: A lubricating layer (5-2) is arranged in the annular groove (5-1) in close contact with the inner wall of the annular groove (5-1), and the lubricating material used in the lubricating layer (5-2) includes lubricating oil and polytetrafluoroethylene.

7. The thin-walled pipe arc processing device according to claim 1, characterized in that: The positioning pin (3) and the positioning hole (2) are connected by threads or sockets.

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