Special tool for lathe drilling of pressing connector shell

Abstract

The utility model relates to a special tool for lathe drilling of a pressing joint shell, which comprises a lower base and is technically characterized in that a circular groove is arranged on the top surface of the lower base, and a reduction positioning groove matched with the bottom of the pressing joint shell is arranged on the bottom surface of the circular groove. The reduction positioning groove is composed of a main positioning rectangular groove and lug plate positioning grooves which are located in the left side and the right side of the main positioning rectangular groove and are communicated with each other, first positioning screw holes are symmetrically formed in the bottom faces of the two lug plate positioning grooves, and first positioning screws are arranged in the first positioning screw holes; an anti-swing limiting through groove corresponding to the main positioning rectangular groove is formed in the top face of the upper cover plate, and a positioning structure and a locking structure are arranged on the butt joint face of the lower base and the upper cover plate. The tool solves the problems that according to a traditional drilling method, the size accuracy cannot be guaranteed, and time and labor are wasted, the accuracy of the size and the position degree is guaranteed, high efficiency and stability of drilling of the pressing connector shell are achieved, the qualified rate 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 drilling holes in a lathe for a pressure fitting housing. Background Technology

[0002] The pressure fitting housing is an important component in the aero-engine assembly, and its structure is as follows: Figures 4-7 As shown, its quality directly affects the quality of the aircraft engine.

[0003] Drilling is a crucial step in the production of pressure fitting housings, and the traditional method involves milling. Specifically, a center drill is first used to mark the puncture points, then a drill bit is used to drill the hole, followed by a milling cutter to finish the inner hole. This drilling method is not only inherently dangerous, but the depth of the hole also makes it prone to tool wobble, leading to dimensional instability, especially in terms of positional dimensions. However, pressure fitting housings require strict tolerances, and traditional drilling methods cannot guarantee dimensional accuracy, making them time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this utility model is to provide a special tooling for drilling pressure connector housings on lathes that is structurally reasonable and reliable, solving the problems of traditional drilling methods that cannot guarantee dimensional accuracy and are time-consuming and labor-intensive. It ensures the accuracy of dimensions and position, achieves high efficiency and stability in drilling pressure connector housings, improves product qualification rate, and saves production costs.

[0005] The technical solution of this utility model is:

[0006] A special tooling for drilling a pressure fitting housing on a lathe includes a lower base. The key technical features are: a circular groove is provided on the top surface of the lower base; a reduction positioning groove matching the bottom of the pressure fitting housing is provided on the bottom surface of the circular groove; the reduction positioning groove consists of a main positioning rectangular groove and ear plate positioning grooves located on the left and right sides of the main positioning rectangular groove and communicating with each other; first positioning screw holes are symmetrically provided on the bottom surfaces of the two ear plate positioning grooves, and first positioning screws are provided in the first positioning screw holes; an upper cover plate is provided on the top of the lower base; an anti-sway limiting through groove corresponding to the main positioning rectangular groove is provided on the top surface of the upper cover plate; and a positioning structure and a locking structure are provided on the mating surfaces of the lower base and the upper cover plate.

[0007] The aforementioned lathe drilling fixture for the pressure fitting housing includes a positioning structure comprising two first pin holes symmetrically located on the top edge of the lower base, a positioning pin located in the first pin holes, and a second pin hole located on the edge of the upper cover plate and cooperating with the positioning pin.

[0008] The aforementioned lathe drilling fixture for the pressure fitting housing includes a locking structure comprising three second positioning screw holes evenly distributed on the edge of the top surface of the lower base, a through hole on the upper cover plate corresponding to the second positioning screw holes, and a second positioning screw passing through the through hole and connected to the second positioning screw hole.

[0009] The aforementioned lathe drilling fixture for the pressure fitting housing has a washer fitted at the root of the first positioning screw hole to avoid damaging the workpiece.

[0010] The aforementioned lathe drilling fixture for the pressure fitting housing has an axial positioning boss at the center of the bottom surface of the lower base for easy installation.

[0011] The beneficial effects of this utility model are:

[0012] First, the bottom of the workpiece to be drilled can be connected and fixed to the lower base's positioning groove using the two first positioning screw holes to achieve basic positioning. Then, the upper cover plate is placed on the workpiece, allowing the workpiece to pass through the anti-sway limiting groove of the upper cover plate. The upper cover plate is then connected and fixed to the lower base using the positioning and locking structures. The anti-sway limiting groove further reinforces the positioning of the workpiece, preventing any displacement of the workpiece during drilling. This solves the problems of traditional drilling methods, such as the inability to guarantee dimensional accuracy and the time and effort required. It ensures the accuracy of dimensions and position, achieving high efficiency and stability in drilling the pressure connector housing, thereby improving the product qualification rate, saving production costs, and demonstrating strong practicality and operability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 CC-direction cross-section;

[0015] Figure 3 yes Figure 1 DD-direction cross-section;

[0016] Figure 4 This is a schematic diagram of the structure of the pressure testing connector housing;

[0017] Figure 5 yes Figure 4 Sectional view along the AA direction;

[0018] Figure 6 yes Figure 4 Cross-sectional view along the BB direction;

[0019] Figure 7 yes Figure 4 Top view. Detailed Implementation

[0020] The present invention will be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-3 As shown, the lathe drilling fixture for the pressure fitting housing includes a lower base 7. The top surface of the lower base 7 has a circular groove 8, and the bottom surface of the circular groove 8 has a reduction positioning groove 5 that matches the bottom of the pressure fitting housing. The reduction positioning groove 5 consists of a main positioning rectangular groove and ear plate positioning grooves located on the left and right sides of the main positioning rectangular groove and communicating with each other. The bottom surfaces of the two ear plate positioning grooves are symmetrically provided with first positioning screw holes, and first positioning screws 6 are installed in the first positioning screw holes. In this embodiment, a washer 10 is fitted at the root of the first positioning screw hole 6 to avoid damaging the workpiece. An axial positioning boss 11 is provided at the center of the bottom surface of the lower base 7 for easy installation.

[0022] The lower base 7 has an upper cover plate 1 on its top. The top surface of the upper cover plate 1 has an anti-sway limiting through groove 2 corresponding to the main positioning rectangular groove. The mating surfaces of the lower base 7 and the upper cover plate 1 are provided with a positioning structure and a locking structure. In this embodiment, the positioning structure includes two first pin holes symmetrically arranged on the edge of the top surface of the lower base 7, a positioning pin 3 located in the first pin holes, and a second pin hole located on the edge of the upper cover plate 1 and cooperating with the positioning pin 3. The locking structure includes three second positioning screw holes 9 evenly arranged on the edge of the top surface of the lower base 7, a through hole on the upper cover plate 1 that corresponds one-to-one with the second positioning screw holes 9, and a second positioning screw 4 that passes through the through hole and connects to the second positioning screw holes 9.

[0023] Working principle:

[0024] 1. Place the bottom of the workpiece in the lowering positioning groove 5 of the lower base 7. The holes I12 and II13 of the workpiece correspond to the two first positioning screw holes. After the first positioning screw 6 is fitted with the washer 10, the tip passes through the corresponding hole I12 or hole II13 and is connected and fixed to the first positioning screw hole 6. The washer 10 is located between the workpiece and the nut of the first positioning screw 6 to avoid scratching the workpiece during the tightening process.

[0025] 2. Insert the two positioning pins 3 into the first pin hole of the lower base 7, put the upper cover plate 1 on the workpiece, so that the workpiece passes through the anti-sway limiting groove 2 of the upper cover plate 1, and the two positioning pins 3 pass through the second pin hole of the upper cover plate 1. Finally, use three second positioning screws 4 to connect and fix the upper cover plate 1 and the lower base 7.

[0026] 3. After assembly, fix the lower base 7 onto the lathe and then drill holes.

[0027] 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 drilling a press connector housing lathe, comprising a lower base, characterized in that: The top surface of the lower base is provided with a circular groove, and the bottom surface of the circular groove is provided with a reduction positioning groove that matches the bottom of the pressure fitting housing. The reduction positioning groove is composed of a main positioning rectangular groove and ear plate positioning grooves located on the left and right sides of the main positioning rectangular groove and communicating with each other. The bottom surfaces of the two ear plate positioning grooves are symmetrically provided with first positioning screw holes, and first positioning screws are provided in the first positioning screw holes. The top of the lower base is provided with an upper cover plate, and the top surface of the upper cover plate is provided with an anti-sway limiting through groove corresponding to the main positioning rectangular groove. The mating surfaces of the lower base and the upper cover plate are provided with a positioning structure and a locking structure.

2. The special tooling for lathe drilling of a press joint shell according to claim 1, characterized in that: The positioning structure includes two first pin holes symmetrically located on the top edge of the lower base, a positioning pin located in the first pin hole, and a second pin hole located on the edge of the upper cover plate and cooperating with the positioning pin.

3. The special tooling for lathe drilling of a press joint shell according to claim 1, characterized in that: The locking structure includes three second positioning screw holes evenly distributed on the top edge of the lower base, a through hole on the upper cover plate corresponding to the second positioning screw holes, and a second positioning screw that passes through the through hole and connects to the second positioning screw hole.

4. The special tooling for lathe drilling of a press joint shell according to claim 1, characterized in that: A washer is fitted at the root of the first positioning screw hole.

5. The special tooling for lathe drilling of a press joint shell according to claim 1, characterized in that: An axial positioning boss is provided at the center of the bottom surface of the lower base.

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