Necking spinning self-adaptive mechanism

Abstract

The necking spinning self-adaptive mechanism comprises a spinning arm, a guide rail is arranged on the spinning arm, a spinning base is arranged on the guide rail, and a cylinder provides power for the spinning base to slide back and forth on the guide rail on one side of the spinning base; a spinning shaft is connected to the rotary pressing base, a spinning tool is placed on the spinning shaft, the end of the spinning tool is a bowl-shaped spinning face, and the section of the spinning face is gradually reduced from the outer end to the inner end. According to the spinning tool, the end portion of the spinning tool is arranged to be the bowl-shaped spinning face, and the spinning face is arranged in the mode that the section of the spinning face is shrunk from the outer end to the inner end, so that when a workpiece is spun, change of a necking position is excessive, controllability of curvature of a curved surface of the necking position is good, deformation of the necking position is avoided, and high-precision equipment is not needed to control the rotating tool. And the equipment cost and the machining cost are reduced, and workpieces with different calibers can be adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self -adaptation mechanism, specifically at necking spinning self -adaptation mechanism. BACKGROUND

[0002] Necking spinning is also called spinning necking, which is a commonly used metal processing technology, especially in the fields of manufacturing and connecting pipes, fittings, mechanical parts, etc. It deforms and compresses the metal pipe or part under a certain pressure to form the required shape and size. Specifically, the process of necking involves using a rotating tool to strongly compress and shape the metal part.

[0003] Currently, when processing larger workpieces, the necking action amplitude cannot be too large due to the large diameter of the workpiece, or the necking rotating tool is easily deformed during operation due to the large outer surface of the spinning wheel. Therefore, high-precision equipment is needed to control the rotating tool. This not only increases the cost but also easily causes processing defects from a technological point of view. When necking spinning is performed on workpieces with a large diameter, a high technical threshold is required for the necking process. SUMMARY

[0004] The utility model aims at solving the technical threshold problem of precisely controlling the rotating tool when necking a workpiece with a large diameter, and provides a necking spinning self-adaptive mechanism that can adapt to necking spinning. This mechanism can also adapt to workpieces with a small diameter, and can adapt to workpieces of any diameter.

[0005] The technical solution to the problem solved by the utility model is as follows:

[0006] The necking spinning self-adaptive mechanism includes a spinning arm, characterized in that a guide rail is provided on the spinning arm, a spinning base is provided on the guide rail, and a cylinder provides power for the forward and backward sliding of the spinning base on the guide rail. A spinning shaft is connected to the spinning base, a spinning tool is placed on the spinning shaft, and the end of the spinning tool is a bowl-shaped spinning surface that gradually decreases from the outer end to the inner end in cross-section.

[0007] As a preferred embodiment, the spinning base is an L-shaped folded edge member, and a guide rail is provided on each side of the folded edge member corresponding to the surface of the spinning arm. The guide rails are respectively provided with sliding blocks that slide and fix the spinning base.

[0008] As a preferred embodiment, the spinning base is provided with a limiting groove on the outside and a fixing hole arranged on both sides of the limiting groove along the direction of the limiting groove. The bottom of the spinning shaft is fixed to a mounting base, and the mounting base is fixed to the outside of the spinning base after being adjusted along the direction of the limiting groove and passing through the fixing hole.

[0009] As a preference, a bearing is fitted on the spinning shaft, which is mounted between the spinning tool and the spinning head.

[0010] The utility model discloses the beneficial effects are as follows:

[0011] Compared with the prior art, the end of the spinning tool is provided with a bowl-shaped spinning surface, and the spinning surface is arranged in a gradually decreasing manner from the outer end to the inner end in the cross section, so that the change of the necking portion during spinning of the workpiece is controllable, the curvature of the curved surface of the necking portion is good, deformation of the necking portion is avoided, high-precision equipment is not needed to control the rotating tool, the equipment cost and the processing cost are reduced, and different caliber workpieces can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0013] Figure 1 is a structural schematic diagram of the utility model;

[0014] Figure 2 is Figure 1 a structural exploded schematic diagram of

[0015] Figure 3 is Figure 1 an embodiment schematic diagram when the workpiece is spun. DETAILED DESCRIPTION

[0016] The embodiments of the technical solutions of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the utility model, that is, a large number of specific details are given to provide a more thorough understanding of the utility model. However, for those skilled in the art, the utility model can be implemented without one or more of these details. In these examples, in order to avoid confusion with the utility model, some technical features known in the art are not described, such as connection, which can be fixed by screwing or screwing, or by welding.

[0017] It should be understood that the utility model can be implemented in different forms, and should not be interpreted as being limited to the embodiments presented here, so only as an example, and cannot limit the protection scope of the utility model.

[0018] In addition, it should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the skilled person in the field to which the present application belongs. The present application will be further described in detail below with reference to the accompanying drawings.

[0019] Referring to Figures 1 to 3 , the necking spinning self-adaptive mechanism mainly comprises a key component, a spinning arm 1, a guide rail 2 is arranged on the spinning arm 1, a spinning base 3 is stably arranged on the guide rail 2, one side of the spinning base 3 is connected with a power source, a cylinder 4, the cylinder 4 provides power for the spinning base 3 to slide forward and backward on the guide rail, a spinning shaft 5 is connected to the spinning base 3, the spinning shaft 5 is a stable support, a spinning tool 6 is arranged on the spinning shaft 5, an end of the spinning tool 6 is a bowl-shaped spinning surface 61, the spinning surface 61 is arranged in a decreasing manner from the outer end to the inner end in the cross section. In cooperation with the spinning tool 6, a fixed pressing wheel 7 is also provided, the necking wall of the spinning workpiece A is between the spinning tool 6 and the fixed pressing wheel 7.

[0020] The present application uses the cylinder 4 as the power to push the spinning base 3 to slide forward and backward on the guide rail, and in fact, the sliding process is converted into the size of the control air pressure. The setting of the end of the spinning tool 6 can more accurately control the force and shape change of the workpiece A during necking of the spinning workpiece A, and the corresponding curvature of the curved surface is within the controllable continuous change range, so that the necking deformation can be avoided, and the self-adaptive effect is achieved.

[0021] Further operation, when the spinning surface 61 extends into the necking workpiece A, the end of the spinning surface 61 first abuts against the inner side of the workpiece necking, and then the fixed pressing wheel 7 and the end of the spinning surface 61 abut against the workpiece necking to neck, because of the setting of the spinning surface 61, the curvature change of the necking curved surface becomes controllable and the curvature change is orderly, so that the sharp necking is prevented, and the change process starts with the necking, and the necking spinning is adaptively performed with the trend of the spinning surface 61.

[0022] Further, as an improvement of the present application, the spinning base 3 is an L-shaped folded edge member, and one guide rail 2 is arranged on each side of the folded edge member corresponding to the surface of the spinning arm 1, and the guide rails are respectively provided with sliding blocks 21 to slidingly fix the spinning base 3.

[0023] In the present embodiment, the spinning base 3 is made into an L-shaped folded edge member, the strength of the spinning base 3 is increased, and the guide rails and the sliding blocks are arranged on each side of the folded edge member and fixed to the surface of the spinning arm 1, so that the spinning base 3 slides more stably and stably, and the working stability and precision of the necking spinning are ensured.

[0024] Further, as an improvement of the utility model, the rotary press base 3 is provided with a limiting groove 31 and a fixing hole 32 arranged along the limiting groove on both sides of the limiting groove 31, the rotary press shaft 5 is fixed at the bottom of an installation base 51, and the installation base 51 is fixed outside the rotary press base 3 after sliding adjustment along the limiting groove 31 and passing through the fixing hole 32.

[0025] In the embodiment, the above setting can replace the head of the rotary press tool 6 and also adapt to the starting operation range of the workpiece with different diameters.

[0026] Further, as an improvement of the utility model, the rotary press shaft 5 is provided with a bearing 52, and the bearing 52 is installed between the rotary shaft 5 and the rotary press tool 6.

[0027] In the embodiment, the bearing is multiple, and is arranged at both ends of the rotary press shaft 5 according to the length of the rotary press tool 6 installed on the rotary press shaft 5, and sometimes, two bearings are arranged at one end to disperse the reaction force of the rotary press tool during the rotary pressing.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model.

Claims

1. A necking spinning self-adapting mechanism comprising a spinning arm, characterized in that: A guide rail is arranged on the spinning arm, a spinning base is arranged on the guide rail, and a cylinder is arranged on one side of the spinning base to provide power for the spinning base to slide forward and backward on the guide rail; a spinning shaft is connected to the spinning base, and a spinning tool is arranged on the spinning shaft, and an end of the spinning tool is a bowl-shaped spinning surface which is gradually reduced from the outer end to the inner end in the cross section.

2. The necking spinning self-adapting mechanism according to claim 1, wherein: The spinning base is an L-shaped folding piece, and a guide rail is arranged on each side of the folding piece corresponding to the surface of the spinning arm, and the guide rails are respectively matched with sliding blocks to slide and fix the spinning base.

3. A necking spinning self-adapting mechanism according to claim 1 or 2, characterized in that: The outer side of the spinning base is filled with a limiting groove and fixed holes arranged on both sides of the limiting groove along the direction of the limiting groove, the bottom of the spinning shaft is fixed on a mounting base, the mounting base is fixed on the outer side of the spinning base after being adjusted to slide along the direction of the limiting groove on the limiting groove and then passing through the fixed holes by bolts.

4. The necking spinning self-adapting mechanism of claim 1, wherein: A bearing is sleeved on the spinning shaft and is arranged between the spinning tool and the spinning shaft.

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