CN203156619U - Machining datum transformation tool of curved-surface part - Google Patents

Abstract

The utility model discloses a processing reference conversion tool for curved surface parts, which comprises a bottom plate, a positioning pin and a fastening nut. The bottom plate has a positioning hole, the positioning pin cooperates with the positioning hole, and the fastening nut is connected to the positioning pin to fix the curved surface. Component. The utility model solves the technical problems that the curved surface parts are difficult to locate, difficult to clamp, and difficult to perform corresponding reference conversion in multiple processing procedures. The positioning pin of the utility model constrains the reference hole on the curved surface part and the corresponding positioning hole on the bottom plate, and the fastening nut can fix the curved surface part on the bottom plate, thereby realizing the clamping problem of the curved surface part. Due to the regular shape of the bottom plate, the position machining accuracy can reach a high level, so the high precision position requirements of the bottom plate ensure the high machining reference accuracy of curved surface parts.

Description

A Machining Datum Conversion Tooling for Curved Surface Parts

technical field

The utility model belongs to the technical field of cold processing, and relates to a processing datum conversion tool for curved surface parts, which is suitable for the situation that it is difficult to perform datum conversion and clamping and positioning in the curved surface processing process in aerospace.

Background technique

At present, there are a large number of curved surface parts with complex structures and irregular surfaces in the aerospace field. This type of parts often has many structural features and high dimensional accuracy. It is difficult to locate and clamp during processing, and it is difficult to perform high-precision datum conversion in multi-channel processing features.

Utility model content

The purpose of this utility model is to provide a processing datum conversion for irregular curved surface parts in order to solve the problems that the existing irregular curved surface parts are difficult to locate, difficult to clamp, and difficult to perform corresponding reference conversion in multi-channel processing features. Tooling can help parts clamping and positioning very well.

The technical solution of the utility model is: a processing benchmark conversion tool for curved surface parts, including a base plate, a positioning pin and a fastening nut, the base plate has a positioning hole, the positioning pin cooperates with the positioning hole, and the fastening nut is connected to the positioning pin Fixed surface parts on top.

The upper and lower surfaces of the base plate are planes. Since the upper and lower surfaces of the bottom plate are planes, it is beneficial to convert the machining datum of the curved surface into the bottom plate.

The bottom plate is of regular shape.

The bottom plate is square, rectangular, circular, trapezoidal, prismatic or polygonal.

The machining standard conversion tool is also provided with a hanging joint, and the hanging joint is fixed on the periphery of the bottom plate. Hanging joints are used to move the base plate to which the surface part is fixed.

The beneficial effects of the utility model:

The utility model solves the technical problems that the curved surface parts are difficult to locate, difficult to clamp, and difficult to perform corresponding reference conversion in multiple processing procedures through a processing reference conversion tool for curved surface parts. It consists of base plate, positioning pin and fastening nut. The positioning pin can convert the processing datum on the curved surface part to the base plate by constraining the reference hole on the surface part and the corresponding positioning hole on the base plate. Due to the regular shape of the base plate, the position processing accuracy can reach a high level, so through the height of the base plate The precise position requirements ensure the high machining datum accuracy of curved surface parts, effectively solving the problem of difficult positioning of curved surface parts during processing; and through the fastening nuts installed on the processing datum block, the curved surface parts can be fixed on the On the bottom plate, the problem of effective clamping of curved surface parts is realized.

The hanging joint fixed on the bottom plate can make the bottom plate fixed with curved surface parts easy to move for processing in different processes.

Description of drawings

The schematic diagram of curved surface parts in Fig. 1 embodiment;

Fig. 2 is a schematic diagram of a curved surface part with a machining reference block in an embodiment;

Fig. 3 is a schematic diagram of the machining reference conversion tooling fixed with curved surface parts in the embodiment;

Fig. 4 is a side view of the machining datum conversion tool fixed with curved surface parts in the embodiment.

Detailed ways

In order to understand the utility model more easily, the spirit of the utility model will be further elaborated below in combination with specific illustrations.

Example

As shown in Fig. 1, the curved surface part that is finally processed is a rudder surface part 100. The upper part of the rudder surface part is a special-shaped bidirectional quadric surface, and the lower part is two horizontal cylinders. Regular profile for positioning and clamping, as well as less rigid process characteristics.

As shown in Figure 2, the curved surface part in the blank state has a processing reference block 10, and the processing reference block 10 is integrated with the curved surface part 100, and the processing reference block 10 will be removed after the processing is completed. For the curved surface part 100 of this embodiment, The processing reference block 10 has two pieces, and the processing reference block 10 has a reference hole 11 and a narrow slot 12 between the two reference holes.

The processing reference conversion tool for curved surface parts of the present invention includes a base plate 1, positioning pins 2, fastening nuts 3 and hanging joints 4, the positioning pins 2 cooperate with the positioning holes on the base plate 1, and are compatible with the processing of 100 of the curved surface parts. The reference hole 11 on the reference block 10 cooperates, the fastening nut 3 is connected on the positioning pin 2 and is used for fixing the curved surface part 100, and there are 4 hanging joints 4, which are fixed around the base plate 1.

The upper and lower surfaces of the base plate 1 are plane and regular in shape, such as square or rectangular as shown in Figure 3, and can also be made into circles, trapezoids, prisms, polygons or other regular shapes according to the requirements of curved parts.

As shown in Fig. 3 and Fig. 4, the locating pin 2 of the machining datum conversion tool passes through the locating hole 1 of the base plate 1 and the datum hole 11 of the machining datum block 10 of the curved surface part, and the fastening nut 3 is then integrated with the curved surface part 100. The machining reference block 10 is fixedly connected with the positioning pin 2 . The hanging joint 4 can be hung on the device of the movable base plate 1, so as to facilitate the moving of curved surface parts for multi-process processing.

working principle

The utility model is a tool for converting the machining reference of curved surface parts, which realizes the precise positioning and conversion of the processing reference of curved surface parts. By using the bottom plate, positioning pins and fastening nuts in the tooling to constrain the processing datum blocks and datum holes set on the curved surface parts, the effective positioning and clamping of the curved surface parts are realized.

The machining datum conversion tooling solves the problems of effective clamping, precise positioning, and efficient mass production of a large number of curved surface parts in the aerospace field. The application of this intellectual achievement in actual production has solved a great problem and has a strong application prospect.

Claims (5)

1. A processing datum conversion tool for curved surface parts, characterized in that it comprises a base plate, a positioning pin and a fastening nut, the base plate has a positioning hole, the positioning pin cooperates with the positioning hole, and the fastening nut is connected to the positioning pin and fixed surface parts. 2 . The machining datum conversion tool for curved surface parts according to claim 1 , wherein the upper and lower surfaces of the base plate are planes. 3 . 3 . The machining datum conversion tool for curved surface parts according to claim 1 , wherein the bottom plate has a regular shape. 4 . 4 . The machining standard conversion tool for curved surface parts according to claim 3 , wherein the bottom plate is square, rectangular, circular, trapezoidal, prismatic or polygonal. 5 . The machining datum conversion tool for curved surface parts according to claim 1 , wherein the machining datum conversion tool is also provided with a hanging joint, and the hanging joint is fixed on the periphery of the bottom plate. 6 .

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