Special tool for expansion section baffle wire cutting groove

Abstract

The utility model relates to a special tool for an expansion section baffle wire cutting groove, which comprises a base and is characterized in that a right-angle-shaped positioning notch extending along the length direction of the base is arranged on one side of the top surface of the base, and a horizontal limiting stop block is arranged at the extending tail end of the right-angle-shaped positioning notch of the base. The bottom face of the right-angle-shaped positioning notch is provided with a linear positioning sliding groove formed in the length direction of the right-angle-shaped positioning notch, a detachable positioning block is arranged in the right-angle-shaped positioning notch, the cross section of the detachable positioning block is in a convex shape, and the detachable positioning block is composed of a positioning body and a positioning sliding strip which is arranged on the bottom face of the positioning body and matched with the linear positioning sliding groove. The top face of the positioning body is lower than the top face of the base, and the distance between the side wall of the positioning body and the vertical wall of the right-angle-shaped positioning notch is the thickness of the side wall of the expansion section baffle. According to the tool, high efficiency and stability of grooving of the expansion section baffle are achieved, the size accuracy is guaranteed, and therefore the percent of pass of products is increased, and the production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine component manufacturing technology, specifically to a special tooling for wire cutting grooves in an expansion section baffle. Background Technology

[0002] The expansion section baffle is a crucial component of the aero-engine assembly, and its quality directly impacts the engine's performance. A key process in the production of the expansion section baffle is wire-cutting of the grooves, such as... Figures 4-7 As shown. The traditional method is to first rough-machine the groove with a milling cutter, and then finish-machine the groove with a milling cutter. However, there are the following problems: because the wall thickness of the expansion section baffle is too thin, improper clamping can easily cause the part to deform, resulting in unstable groove machining dimensions and positional dimensions. Furthermore, the tolerance requirements for the expansion section baffle groove are strict, which leads to a low product qualification rate and a large amount of scrap. Utility Model Content

[0003] The purpose of this utility model is to provide a special tooling for wire cutting grooves of expansion section baffles that has a reasonable structure and reliable use, so as to solve the above problems, achieve high efficiency and stability in grooving of expansion section baffles and ensure dimensional accuracy, thereby improving the product qualification rate and saving production costs.

[0004] The technical solution of this utility model is:

[0005] A special tooling for wire cutting grooves of an expansion section baffle includes a base. The key technical features are: a right-angled positioning notch extending along its length is provided on one side of the top surface of the base, and a horizontal limiting block is provided at the extended end of the right-angled positioning notch; a straight positioning groove is arranged along its length on the bottom surface of the right-angled positioning notch; a detachable positioning block is provided in the right-angled positioning notch; the cross-section of the detachable positioning block is convex, and it consists of a positioning body and a positioning slide bar located on the bottom surface of the positioning body and cooperating with the straight positioning groove; the top surface of the positioning body is lower than the top surface of the base; and the distance between the side wall of the positioning body and the vertical wall of the right-angled positioning notch is the side wall thickness of the expansion section baffle.

[0006] The aforementioned special tooling for wire cutting groove of the expansion section baffle has a wire-threading hole on the base for wire cutting.

[0007] The above-mentioned special tooling for wire cutting groove of expansion section baffle has a positioning body whose two side walls are spaced apart and whose inner width is equal to that of expansion section baffle. The height of the positioning body is less than the inner height of expansion section baffle, and the length of the detachable positioning block is greater than the length of expansion section baffle.

[0008] The beneficial effects of this utility model are:

[0009] In use, the detachable positioning block is used to support the expansion section baffle inside. The detachable positioning block is then combined with the base to keep the two side walls of the expansion section baffle upright and prevent the opening side from bulging outward. When grooving the bottom, no deformation will occur, which solves the deformation problem in the grooving process of the expansion section baffle. This achieves high efficiency, stability and dimensional accuracy in grooving of the expansion section baffle, thereby improving the product qualification rate, saving production costs, and is highly practical and easy to operate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 yes Figure 1 Top view;

[0012] Figure 3 yes Figure 2 Sectional view along the AA direction;

[0013] Figure 4 This is a schematic diagram of the expansion section baffle;

[0014] Figure 5 yes Figure 4 The left view;

[0015] Figure 6 yes Figure 4 The right view;

[0016] Figure 7 yes Figure 4 Top view. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1 to 7 As shown, the special tooling for the expansion section baffle wire cutting groove includes a base 1. The top surface of the base 1 is provided with a right-angled positioning notch 7 extending along its length direction, and the base 1 is provided with a horizontal limiting block 4 at the extended end of the right-angled positioning notch 7. The bottom surface of the right-angled positioning notch 7 is provided with a straight positioning groove arranged along its length direction.

[0019] The right-angled positioning notch 7 contains a detachable positioning block 3. The detachable positioning block 3 has a convex cross-section and consists of a positioning body and a positioning slide 6 located on the bottom surface of the positioning body and cooperating with a straight positioning slide groove. The top surface of the positioning body is lower than the top surface of the base 1. The distance between the side wall of the positioning body and the vertical wall of the right-angled positioning notch 7 is equal to the side wall thickness of the expansion section baffle 2. The distance between the two side walls of the positioning body is equal to the inner width of the expansion section baffle 2. The height of the positioning body is less than the inner height of the expansion section baffle 2. The length of the detachable positioning block 3 is greater than the length of the expansion section baffle 2.

[0020] In this embodiment, the base 1 is provided with a wire-threading hole 5 for wire cutting.

[0021] Working principle:

[0022] Fit the expansion section baffle 2, which is to be cut, onto the detachable positioning block 3. (See below) Figures 1-3 Next, insert the detachable positioning block 3 along the straight positioning groove of the base into the right-angle positioning notch 7 to prevent the workpiece from being crushed during clamping. Finally, place this fixture on the wire EDM machine and use a dial indicator to straighten, align, and fix it. Then, pass the wire through the wire threading hole 5 before performing wire EDM.

[0023] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A special tool for cutting a slot in a baffle of an expansion section, comprising a base, characterized in that: The base has a right-angled positioning notch extending along its length on one side of its top surface, and a horizontal limiting block is provided at the extended end of the right-angled positioning notch. The bottom surface of the right-angled positioning notch has a straight positioning groove arranged along its length. A detachable positioning block is provided in the right-angled positioning notch. The cross-section of the detachable positioning block is convex, and it consists of a positioning body and a positioning slide bar located on the bottom surface of the positioning body and cooperating with the straight positioning groove. The top surface of the positioning body is lower than the top surface of the base. The distance between the side wall of the positioning body and the vertical wall of the right-angled positioning notch is the side wall thickness of the expansion section baffle.

2. The special tooling for dicing slots of expander segment baffle according to claim 1, characterized in that: The base is provided with wire-threading holes for wire cutting.

3. The special tooling for dicing slot of expansion joint baffle according to claim 1, wherein: The distance between the two side walls of the positioning body is equal to the inner width of the expansion section baffle, the height of the positioning body is less than the inner height of the expansion section baffle, and the length of the detachable positioning block is greater than the length of the expansion section baffle.

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