Special-shaped structure lug precision groove grinding tool

Abstract

The utility model relates to the field of aviation mechanical part machining, in particular to a special-shaped structure lug precision groove grinding tool which comprises a rocker arm part, a locating hole H1 is formed in the junction of a web of the rocker arm part and a structure where a precision groove is located, a locating hole H2 is formed in the web of the rocker arm part, and the included angle between a precision groove H3 in the rocker arm part and the horizontal plane is A1. The base plate is provided with an angle plate; and the positioning mechanism is arranged on the angle plate to position the rocker arm part, so that a web plate of the rocker arm part is parallel to the angle plate, and at the moment, the included angle between the precision groove H3 and the angle plate is A1. According to the special-shaped structure lug precise groove grinding tool, quick clamping, positioning and straightening of a special-shaped structure lug precise groove can be achieved, the positioning and clamping efficiency of parts is greatly improved, meanwhile, by means of the grinding tool, the requirement for the size precision of a lug groove can be met, and it is guaranteed that the wall thickness of lugs on the two sides is uniform. In addition, the tool is simple in overall structure, convenient and fast to operate and maintain by workers, obvious in production effect and good in batch processing benefit.

Description

Technical Field

[0001] The utility model relates to the field of aviation mechanical part processing, in particular to a precision groove grinding tooling for an earpiece with a special-shaped structure. Background Art

[0002] Aircraft rocker arm parts are commonly used for mechanical connection and transmission of aircraft components. Usually, the rocker arm parts are designed with earpiece structures, and there are earpiece grooves with certain precision dimensions between the earpieces. In actual production operations, the precision groove processing of conventional structure earpieces generally does not require the aid of tooling and can be directly achieved by conventional grinding. However, for the precision groove processing of a type of earpiece with a special-shaped structure (such as earpiece torsion, compound angles, etc.), although the above processing method is still adopted, the positioning and clamping of the parts are very difficult. If there is a slight mistake, the wall thicknesses of the earpieces on both sides of the processed groove are uneven, and there is a risk of scrapping the parts, which affects production and delivery. Summary of the Utility Model

[0003] The purpose of the utility model is to address the problem that conventional grinding is difficult to process earpieces with special-shaped structures well in the background art, which may lead to uneven wall thicknesses of the earpieces on both sides of the groove, and propose a precision groove grinding tooling for an earpiece with a special-shaped structure.

[0004] The technical solution of the utility model: A precision groove grinding tooling for an earpiece with a special-shaped structure includes a rocker arm part. There is a positioning hole H1 at the intersection of the web of the rocker arm part and the structure where the precision groove is located, and there is a positioning hole H2 on the web of the rocker arm part. The included angle between the precision groove H3 on the rocker arm part and the horizontal plane is A1. It further includes:

[0005] A base plate, on which an angle plate is arranged;

[0006] And a positioning mechanism, which is arranged on the angle plate to position the rocker arm part, making the web of the rocker arm part parallel to the angle plate. At this time, the included angle between the precision groove H3 and the angle plate is A1.

[0007] Preferably, the positioning mechanism positions the rocker arm part through the positioning hole H1 and the positioning hole H2.

[0008] Preferably, the positioning mechanism includes:

[0009] A positioning unit, which positions the rocker arm part through the positioning hole H2, making the web of the rocker arm part parallel to the angle plate;

[0010] And a limiting unit, which is arranged on the angle plate and limits the rocker arm part through the positioning hole H1.

[0011] Preferably, the positioning unit is a positioning pin. There is a guiding hole arranged on the angle plate, and the positioning pin is fitted to pass through the guiding hole and the positioning hole H2, and the positioning pin is perpendicular to the angle plate.

[0012] Preferably, the limiting unit includes:

[0013] A positioning pin shaft is arranged on the angle plate. The positioning pin shaft passes through the positioning hole H1, and a thread is provided on the outer peripheral wall of the end of the positioning pin shaft away from the angle plate;

[0014] And a nut, which is matched with the thread on the positioning pin shaft, and then the rocker arm part is locked by arranging a washer between the nut and the rocker arm part.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects: It can realize the rapid clamping, positioning and alignment of the precision groove of the special-shaped structure lug, greatly improve the positioning and clamping efficiency of the parts. At the same time, by using the grinding tooling, the dimensional accuracy requirements of the lug groove can be ensured, the wall thickness of the two lugs on both sides is made uniform, and the qualified rate of the parts is greatly improved. In addition, the overall structure of the tooling design is simple, the operation and maintenance of workers are convenient and fast, the production effect is obvious, and the batch processing benefit is good. Description of the Drawings

[0016] Figure 1 , Figure 2 and Figure 3 are all schematic structural diagrams of the rocker arm part; Schematic structural diagram of an embodiment of the utility model;

[0017] Figure 4 , Figure 5 and Figure 6 are all schematic assembly diagrams of the rocker arm part and the grinding tooling.

[0018] Reference numerals: 1, rocker arm part; 2, nut; 3, washer; 4, base plate; 5, angle plate; 6, positioning pin; 7, positioning pin shaft. Detailed Description of the Invention

[0019] Embodiment 1

[0020] As Figures 1-6 shown, a precision groove grinding tooling for a special-shaped structure lug proposed by the utility model includes a rocker arm part 1. There is a positioning hole H1 at the intersection of the web of the rocker arm part 1 and the structure where the precision groove is located. There is a positioning hole H2 on the web of the rocker arm part 1. The included angle between the precision groove H3 on the rocker arm part 1 and the horizontal plane is A1; It also includes: a base plate 4 and a positioning mechanism;

[0021] The base plate 4 has an angle plate 5 arranged thereon;

[0022] And a positioning mechanism, which is arranged on the angle plate 5 to position the rocker arm part 1, so that the web of the rocker arm part 1 is parallel to the angle plate 5. At this time, the included angle between the precision groove H3 and the angle plate 5 is A1.

[0023] Embodiment 2

[0024] As Figures 4-6 shown, a precision groove grinding tooling for an earpiece with a special-shaped structure proposed by the present utility model. Compared with the first embodiment, the structural schematic diagram of the positioning mechanism is introduced in detail in this embodiment.

[0025] The positioning mechanism positions the rocker arm part 1 through the positioning hole H1 and the positioning hole H2. Specifically, the positioning mechanism includes: a positioning unit that positions the rocker arm part 1 through the positioning hole H2, making the web of the rocker arm part 1 parallel to the angle plate 5; and a limiting unit that is arranged on the angle plate 5 and limits the rocker arm part 1 through the positioning hole H1.

[0026] Furthermore, the positioning unit is a positioning pin 6. A guiding hole is provided on the angle plate 5. The positioning pin 6 cooperates to pass through the guiding hole and the positioning hole H2, and the positioning pin 6 is perpendicular to the angle plate 5. The limiting unit includes: a positioning pin shaft 7 arranged on the angle plate 5. The positioning pin shaft 7 passes through the positioning hole H1. A thread is provided on the outer peripheral wall of the end of the positioning pin shaft 7 away from the angle plate 5; and a nut 2 that cooperates with the thread on the positioning pin shaft 7, and then the rocker arm part 1 is locked by arranging a washer 3 between the nut 2 and the rocker arm part 1.

[0027] In summary, when the present utility model is used, first, the part is sleeved onto the positioning pin shaft 7 on the angle plate 5 through the positioning hole H1, and the rocker arm part 1 is positioned on the tooling and the earpiece groove is horizontally aligned by inserting the positioning pin 6 into the positioning hole H2. Then, the rocker arm part 1 is fixed tightly by tightening the washer 3 with the nut 2, realizing the final clamping of the rocker arm part 1. Then, the grinding process of the precision groove H3 is carried out. After the swing angle A1 of the substrate 4 is fixed, the grinding process can be carried out. At this time, the web of the precision groove H3 of the special-shaped structure earpiece is already horizontally placed, effectively ensuring the dimensional accuracy requirements of the earpiece groove, ensuring uniform wall thickness of the two earpieces on both sides, and reducing the interference of human factors. After the processing is completed, the rocker arm part 1 is removed and inspected for delivery. The present utility model can realize the rapid clamping, positioning, and alignment of the precision groove of the special-shaped structure earpiece, greatly improving the positioning and clamping efficiency of the part. At the same time, by using the grinding tooling, the dimensional accuracy requirements of the earpiece groove can be ensured, the wall thickness of the two earpieces on both sides can be made uniform, and the qualified rate of the part is greatly improved. In addition, the overall structure of the tooling design is simple, the application principle is easy to understand, problem-oriented is adhered to, problems such as difficult actual clamping and positioning are fully considered, the operation and maintenance of workers are convenient and fast, the production effect is obvious, and the batch processing benefit is good.

[0028] The embodiments of the present utility model have been described in detail above in conjunction with the drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those skilled in the art to which it pertains.

Claims

1. A precision groove grinding tooling for an earpiece with a special-shaped structure, comprising a rocker arm part (1). There is a positioning hole H1 at the intersection of the web of the rocker arm part (1) and the structure where the precision groove is located. There is a positioning hole H2 on the web of the rocker arm part (1). The angle between the precision groove H3 on the rocker arm part (1) and the horizontal plane is A1; characterized in that, Further included are: a substrate (4) with an angle plate (5) disposed thereon; and a positioning mechanism disposed on the angle plate (5) for positioning the rocker arm part (1) such that the web of the rocker arm part (1) is parallel to the angle plate (5), and at this time, the included angle between the precision groove H3 and the angle plate (5) is A1.

2. The precision groove grinding tooling for the special-shaped structural lug according to claim 1, characterized in that The positioning mechanism positions the rocker arm part (1) through the positioning holes H1 and H2.

3. The precision groove grinding tooling for the special-shaped lug according to claim 2, characterized in that The positioning mechanism includes: a positioning unit that positions the rocker arm part (1) through the positioning hole H2 such that the web of the rocker arm part (1) is parallel to the angle plate (5); and a limiting unit disposed on the angle plate (5) and limiting the rocker arm part (1) through the positioning hole H1.

4. The precision groove grinding tooling for the special-shaped structure lug according to claim 3, wherein The positioning unit is a positioning pin (6), and a guiding hole is provided on the angle plate (5). The positioning pin (6) is fitted through the guiding hole and the positioning hole H2, and the positioning pin (6) is perpendicular to the angle plate (5).

5. The precision groove grinding tooling for the special-shaped structure lug according to claim 3, characterized in that, The limiting unit includes: a positioning pin shaft (7) disposed on the angle plate (5), the positioning pin shaft (7) passing through the positioning hole H1, and a thread being provided on the outer peripheral wall of the end of the positioning pin shaft (7) away from the angle plate (5); and a nut (2) that mates with the thread on the positioning pin shaft (7), and the rocker arm part (1) is locked by providing a washer (3) between the nut (2) and the rocker arm part (1).

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