Positioning water cutting tool for molded surface of undercarriage outer cylinder type forge piece blank
By designing a combination of tooling pads and profile pads, the positioning problem of landing gear outer cylinder forging blanks during waterjet cutting was solved, achieving rapid positioning and efficient edge cutting, and improving the product qualification rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HONGSHAN AVIATION FORGING CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-21
AI Technical Summary
When waterjet cutting aircraft landing gear outer cylinder forging blanks, the profile is difficult to align and position, resulting in low cutting efficiency and easy product scrap.
Design a combination of a tooling pad and a profile pad. The tooling pad has the same shape as the projected outline of the forging, and the profile pad matches the profile of the forging. This combination is used for quick positioning and adjustment of burrs, thereby improving machining accuracy.
It achieves rapid positioning and alignment, improves cutting efficiency and product qualification rate, prevents cuts, and has versatility and high efficiency.
Smart Images

Figure CN224144376U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of machining technology, specifically relating to a waterjet cutting fixture for positioning the blank surface of a landing gear outer cylinder forging. Background Technology
[0002] A landing gear outer cylinder forging blank produces a burr around its outer surface after forging, which needs to be removed by a waterjet cutter. However, because the forging blank is a profile, it is difficult to align and position it properly, resulting in low cutting efficiency and the risk of overcutting due to misalignment, leading to product scrap. Therefore, a simple and quick positioning fixture is urgently needed for cutting the burr around the landing gear outer cylinder forging blank. Utility Model Content
[0003] In view of this, in order to solve the above-mentioned technical problems, this patent proposes a waterjet cutting fixture for positioning the blank surface of a landing gear outer tube forging, including a fixture pad 3, wherein the outer contour line of the fixture pad 3 is the same as the projected contour line of the landing gear outer tube forging, and a plurality of surface pads 4 are provided on one side of the fixture pad 3, wherein the top of the surface pad 4 contacts the blank surface of the landing gear outer tube forging, and the shape of the top of the surface pad matches the blank surface of the landing gear outer tube forging.
[0004] Optionally, the outer contour of the tooling pad 3 is the same as the projected contour of the landing gear outer cylinder forging, and is reduced inward by a preset ratio.
[0005] Optionally, the profile pad 4 is used to adjust the burrs on the landing gear outer tube forging blank to a horizontal direction.
[0006] Optionally, the profile pad 4 is provided at least at each of the two ends corresponding to the tooling pad 3.
[0007] Optionally, the profile pad 4 and the tooling pad 3 can be detachably connected.
[0008] Optionally, the profile pad 4 is made of plastic.
[0009] The tooling of this application is simple to manufacture and can quickly position and align the forging blank, effectively improving the product cutting efficiency and preventing cuts, thereby increasing the product qualification rate. The tooling is versatile and can be applied to the cutting of similar forging blanks on a waterjet cutting machine by simply changing the shape of the tooling pad and the profile pad block. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the forging before trimming.
[0011] Figure 2 This is a schematic diagram of the forging after the edges have been trimmed.
[0012] Figure 3 This is a schematic diagram of a tooling pad.
[0013] Figure 4 This is a schematic diagram of the assembled tooling;
[0014] Figure 5 This is a schematic diagram illustrating the use of waterjet cutting to trim the outer cylinder forging blank of the landing gear according to this utility model;
[0015] Figure 6 This is a schematic diagram of the landing gear outer cylinder forging blank after water jet cutting and edge trimming.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1-Landing gear outer tube forging blank; 2-Landing gear outer tube forging; 3-Tooling pad; 4 / 5 / 6 / 7-Shaped surface pad block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] According to one aspect of the present invention, a waterjet cutting fixture for positioning the blank surface of a landing gear outer cylinder forging is provided, such as... Figure 1-5 As shown, it includes a tooling pad 3, wherein the outline of the tooling pad 3 is the same as the projected outline of the landing gear outer tube forging 2. A plurality of profile pads 4 are provided on one side of the tooling pad 3, wherein the top of the profile pad 4 contacts the profile of the landing gear outer tube forging blank 1, and the shape of the top of the top matches the profile of the landing gear outer tube forging blank 1.
[0020] Furthermore, the outer contour of the tooling pad 3 is the same as the projected contour of the landing gear outer cylinder forging, and is reduced inward by a preset ratio to prevent cutting into the tooling pad 3.
[0021] Furthermore, the profile pad 4 is used to adjust the burrs of the landing gear outer cylinder forging blank 1 to the horizontal direction, which facilitates processing and improves processing accuracy.
[0022] Furthermore, multiple profiled pads 4 / 5 / 6 / 7 are provided at least at the two ends corresponding to the tooling pad 3 to improve support stability.
[0023] Furthermore, the profile pad 4 and the tooling pad 3 are detachably connected, making them easy to disassemble, assemble, and store.
[0024] Furthermore, the profile pad 4 is made of plastic, which facilitates processing.
[0025] The workflow is as follows:
[0026] (1) Install the tooling pad 3 on the waterjet cutting machine and tighten it;
[0027] (2) Install the 4, 5, 6 and 7 molded surface pads on the tooling pad 3 and tighten them;
[0028] (3) Install the forging blank 1 on the assembled tooling, and use the profile pads 4, 5, 6 and 7 to quickly align and position the parts. The profile angle of the profile pad 5 is consistent with the outer profile angle of the ear of the forging 1, the semi-circular hole of the profile pad 6 is consistent with the diameter of the cylinder at the end of the forging 1, and the profiles of the profile pads 4 and 7 are consistent with the inner profiles of the two small grooves on the forging 1.
[0029] (4) The water jet cutting machine cuts the edges according to the outline of forging 2;
[0030] (5) After the edges are trimmed, remove forging 2 and the edge material;
[0031] (6) Repeat steps 3, 4 and 5 to complete the trimming of the next forging blank 1.
[0032] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A waterjet cutting fixture for positioning the blank surface of a landing gear outer cylinder forging, characterized in that, include: Tooling pad (3), wherein the outline of the tooling pad (3) is the same as the projected outline of the landing gear outer tube forging. A plurality of profile pads (4) are provided on one side of the tooling pad (3), wherein the top of the profile pad (4) contacts the profile of the landing gear outer tube forging blank, and the shape of the top of the top matches the profile of the landing gear outer tube forging blank 1.
2. The tooling of claim 1, wherein, The outline of the tooling pad (3) is the same as the projection outline of the landing gear outer cylinder forging, and is reduced inward by a preset ratio.
3. The tooling of claim 1, wherein, The profile pad (4) is used to adjust the burrs on the landing gear outer tube forging blank to the horizontal direction.
4. The tooling of claim 1, wherein, The profile pad (4) is provided at least at the two ends corresponding to the tooling pad (3).
5. The tooling of claim 1 wherein, The profile pad (4) and the tooling pad (3) are detachably connected.
6. The tooling of claim 1 wherein, The shaped pad (4) is made of plastic.