Internal expansion tool clamp for thin-wall part
By designing an internal expansion tool clamp including a core body, an internal expansion chuck, an expansion sleeve and a pull rod nut, the problem of deformation and disassembly in thin-walled parts is solved, and stable expansion positioning and easy operation effect is achieved. .
Patent Information
- Application Number
- CN202421142241.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-23
AI Technical Summary
During the thin-walled parts processing of high-voltage electrical switch accessories, the existing fixed-form inner braces are likely to cause deformation of the pipe joints and are difficult to disassemble after welding, and there is a lack of special tooling to achieve stable welding inner braces.
An internal expansion tool clamp including a core body, an internal expansion chuck, an internal expansion sleeve and a tie rod nut is designed. The combination of the expansion sleeve and an internal expansion chuck provides stable tension to achieve expansion positioning effect, which is suitable for thin-walled parts. processing.
It realizes stable expansion positioning of thin-walled parts, is simple to operate, is suitable for the preparation of thin-walled parts, and solves the problems of deformation and disassembly difficulty.
Smart Images
Figure CN222288844U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a thin-walled parts processing and preparation technology, in particular to a thin-walled parts internal expansion fixture. Background Art
[0002] There are many thin-walled parts in high-voltage electrical switch accessories. If the existing fixed-form inner supports are used in the processing and manufacturing of thin-walled parts, the pipe joints are easily deformed when the inner supports are inserted. After welding, due to the physical deformation, it is difficult to disassemble, which often causes deformation of the thin-walled parts. Therefore, there is a lack of special tooling to realize the function of inner supports for pipe joint welding. Utility Model Content
[0003] The utility model aims to provide an internal expansion fixture suitable for processing and manufacturing thin-wall parts.
[0004] The technical solution of the utility model is: a thin-walled parts internal expansion tooling fixture, installed on a machine tool, comprising a coaxially arranged core expansion body, an internal expansion chuck, an expansion sleeve and a tie rod nut, one end of the core expansion body is T-shaped, and the other end is provided with an external thread; the interior of the expansion sleeve is a cavity, one side of the expansion sleeve is provided with a circular opening for placing the tie rod nut, and the other side is provided with a limiting boss, the internal expansion chuck sleeve is arranged on the limiting boss and abuts against the end face of the expansion sleeve; the surface of the internal expansion chuck is provided with an expansion joint; the tie rod nut is provided with an internal thread matching the external thread at the bottom of the core expansion body near one end of the tie rod nut close to the limiting boss, and the other side is provided with a fixed thread fixedly installed on the machine tool; one end of the external thread of the core expansion body passes through the internal expansion chuck, the limiting boss, and the circular opening and is threadedly connected with the tie rod nut.
[0005] According to a further technical solution, the outer diameter of the T-shaped end of the core expansion body is larger than the outer diameter of the limiting boss.
[0006] A further technical solution is that the outer diameter of the T-shaped end of the core expansion body is larger than the outer diameter of the end when the inner expansion chuck is contracted and smaller than the inner diameter when the inner expansion chuck is expanded, and the inner diameter of the thin-walled part is larger than the outer diameter of the end when the inner expansion chuck is contracted and smaller than the inner diameter when the inner expansion chuck is expanded.
[0007] The beneficial effects of the utility model are:
[0008] The utility model has a simple structure, provides stable tension through the cooperation of the expansion sleeve, the inner expansion chuck and the expansion core body, achieves the effect of expansion positioning, is easy to use and operate, and is suitable for clamping in the process of preparing thin-walled parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the structure of the utility model.
[0010] Among them, 1. tie rod nut, 11. internal thread, 12. fixed thread, 2. internal expansion chuck, 21. expansion joint, 3. expansion sleeve, 31. circular opening, 32. limiting boss, 4. expansion core body, 41. T-shaped end, 42. external thread. DETAILED DESCRIPTION
[0011] The present invention is further described and understood by way of non-limiting examples below.
[0012] like Figure 1 As shown, the utility model provides a thin-walled part internal expansion tooling fixture for installation on a machine tool. The utility model comprises a coaxially arranged core expansion body 4, an internal expansion chuck 2, an expansion sleeve 3 and a tie rod nut 1, one end of the core expansion body 4 is T-shaped, and the other end is provided with an external thread 42; the interior of the expansion sleeve 3 is a cavity, one side of the expansion sleeve 3 is provided with a circular opening 31 for the tie rod nut 1 to be placed, and the other side is provided with a limiting boss 32, the internal expansion chuck 2 is sleeved on the limiting boss 32 and abuts against the end face of the expansion sleeve 3; an expansion joint 21 is provided on the surface of the internal expansion chuck 2; an internal thread 11 matching the external thread 42 at the bottom of the core expansion body 4 is provided inside the end of the tie rod nut 1 close to the limiting boss 32, and a fixed thread 12 fixedly installed on the machine tool is provided on the other side; the outer diameter of the T-shaped end 41 of the core expansion body 4 is larger than the outer diameter of the limiting boss 32, and the outer diameter of the T-shaped end 41 of the core expansion body 4 is larger than the outer diameter of the end when the internal expansion chuck 2 is contracted and smaller than the inner diameter when the internal expansion chuck 2 is expanded.
[0013] During operation, the inner expansion chuck 2 is sleeved on the limiting boss 32, the thin-walled parts are placed on the outer ring of the inner expansion chuck 2, the tie rod nut 1 is placed in the circular opening 31 of the expansion sleeve 3, and one end of the external thread 42 of the expansion core body 4 passes through the inner expansion chuck 2 and is threadedly connected with the tie rod nut 1.
[0014] In the initial state, the T-shaped end 41 of the core expansion body 4 abuts against the end face of the inner expansion chuck 2. During operation, the pull rod nut 1 moves to the right under the action of the machine tool, thereby driving the core expansion body 4 to move to the right, and the T-shaped end 41 opens the inner expansion chuck 2. After the inner expansion chuck 2 expands, it is tightly attached to the inner wall of the thin-walled part, thereby achieving the effect of expansion positioning.
[0015] The utility model has a simple structure, provides stable tension through the cooperation of the pull rod nut 1, the inner expansion chuck 2 and the expansion core body 4, achieves the effect of expansion positioning, is easy to use and operate, and is suitable for clamping in the process of preparing thin-walled parts.
[0016] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A thin-walled parts internal expansion fixture, arranged on a machine tool, characterized in that: It includes a coaxially arranged core expansion body, an internal expansion chuck, an expansion sleeve and a pull rod nut, one end of the core expansion body is T-shaped, and the other end is provided with an external thread; the interior of the expansion sleeve is a cavity, one side of the expansion sleeve is provided with a circular opening for placing the pull rod nut, and the other side is provided with a limiting boss, the inner expansion chuck sleeve is arranged on the limiting boss and abuts against the end face of the expansion sleeve; the surface of the inner expansion chuck is provided with an expansion joint; the pull rod nut is provided with an internal thread matching the external thread at the bottom of the core expansion body near one end of the pull rod nut close to the limiting boss, and the other side is provided with a fixed thread fixedly installed on the machine tool; one end of the external thread of the core expansion body passes through the inner expansion chuck, the limiting boss and the circular opening and is threadedly connected with the pull rod nut.
2. A thin-walled parts internal expansion fixture according to claim 1, characterized in that: The outer diameter of the T-shaped end of the core expansion body is greater than the outer diameter of the limiting boss.
3. A thin-walled parts internal expansion fixture according to claim 2, characterized in that: The outer diameter of the T-shaped end of the core expansion body is larger than the outer diameter of the end when the inner expansion chuck is contracted and smaller than the inner diameter when the inner expansion chuck is expanded; the inner diameter of the thin-walled part is larger than the outer diameter of the end when the inner expansion chuck is contracted and smaller than the inner diameter when the inner expansion chuck is expanded.