Fixing machining device and method for thin-wall special-shaped curved surface part

Abstract

The invention discloses a holding machining device and method for a thin-wall special-shaped curved surface part. Comprising more than one layer of strip-shaped foams (1) which are stacked in the direction perpendicular to a machining datum plane (2), the inner side walls of the strip-shaped foams (1) in the width direction are bonded with the outer surface of a to-be-machined thin-wall special-shaped curved surface part (3), and the outer side walls of the strip-shaped foams (1) are located on a fixing plane (4) perpendicular to the machining datum plane (2); the fixing plane (4) abuts against the straight face baffle (5). The method has the advantages of simple implementation mode, rapidness, universality and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of composite material processing, and in particular to a holding processing device and method for thin-walled special-shaped curved surface parts. Background Art

[0002] When processing a certain model, because the product is a thin-walled part with a special-shaped curved surface, the thickness of the thinnest area is less than 1mm, and the processing method is vertical manufacturing, a shaped baffle is required to support the surface processing during manufacturing. Figure 1 , Figure 2 As shown: Figure 1 Product main view, Figure 2 The left view of the product is shown. During processing, these existing special-shaped curved thin-wall honeycombs are all positioned and supported using special-shaped baffles, see below Figure 3 Different profiles require different profile baffles, and the large number of them results in high manufacturing costs. More importantly, the manufacturing cycle is very long, which will seriously affect the progress of the product. This contradiction is particularly prominent in the stage of developing many models and tight time nodes. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for holding and processing thin-walled special-shaped curved surface parts. The present invention has the advantages of simple, fast, universal and low-cost implementation.

[0004] Technical solution: A holding processing device for thin-walled special-shaped curved surface parts, comprising more than one layer of strip foam stacked in a direction perpendicular to a processing reference plane, wherein the inner side walls of each strip foam in the width direction are bonded to the outer surface of the thin-walled special-shaped curved surface part to be processed, and the outer side walls are located on a holding plane perpendicular to the processing reference plane; the holding plane abuts against a straight baffle.

[0005] In the aforementioned holding and processing device for thin-walled special-shaped curved surface parts, the strip-shaped foam is PMI foam.

[0006] In the aforementioned holding processing device for thin-walled special-shaped curved surface parts, the holding plane and the straight baffle are bonded by double-sided adhesive.

[0007] In the aforementioned holding and processing device for thin-walled special-shaped curved surface parts, the bottom end of the straight-face baffle is connected to the processing reference surface via a fixing block.

[0008] In the aforementioned holding and processing device for thin-walled special-shaped curved surface parts, the thin-walled special-shaped curved surface parts are composite honeycomb-shaped parts.

[0009] In the aforementioned holding and processing device for thin-walled special-shaped curved surface parts, the straight-face baffle is made of steel or aluminum.

[0010] The holding processing method of the aforementioned holding processing device for thin-walled special-shaped curved surface parts is as follows: the inner side walls in the width direction of the strip foam are sequentially bonded to the surface of the thin-walled special-shaped curved surface parts along a direction perpendicular to the processing reference plane; then the outer side walls in the width direction of each strip foam are cut along a direction perpendicular to the processing reference plane so that the outer side walls of each strip foam are in the same plane, which is used as the holding plane; a straight baffle is used to abut against the holding plane to complete the support and holding of the thin-walled special-shaped curved surface parts during processing.

[0011] In the aforementioned holding processing method, the cutting process of the holding plane is as follows: after the thin-walled special-shaped curved surface parts and each strip of foam are fixed to the processing reference surface of the five-axis milling machine, the five-axis milling machine spindle A axis is swung to 90° for milling to obtain the holding plane.

[0012] Beneficial effects: The present invention effectively solves the positioning support of different special-shaped curved thin-wall honeycombs, achieving a simple structure, fast and convenient, wide versatility and low cost. It has a wide range of applications. The custom-made baffles that originally took several months to manufacture can be completed in 1 hour using this method. It not only plays a supporting and holding role, but also solves the problem that this type of product is difficult to process due to the inability to provide a shaped support baffle. It provides a certain reference value for the subsequent similar honeycomb processing, and has achieved good quality and economic benefits. The present invention has been used in the processing of a certain type of integral honeycomb. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the thin-walled special-shaped curved surface product;

[0014] Figure 2 This is the left view of the thin-walled special-shaped curved surface product;

[0015] Figure 3 It is a schematic diagram of a traditional special-purpose baffle;

[0016] Figure 4 It is a schematic diagram of foam bonding;

[0017] Figure 5 It is a schematic diagram of the baffle support. DETAILED DESCRIPTION

[0018] Embodiment 1. A device for holding and processing thin-walled special-shaped curved surface parts, see Figure 4 and Figure 5 , including more than one layer of strip foam 1 stacked in a direction perpendicular to a processing reference plane 2, the inner side walls of each strip foam 1 in the width direction are bonded to the outer surface of a thin-walled special-shaped curved surface part 3 to be processed, and the outer side walls are on a holding plane 4 perpendicular to the processing reference plane 2; the holding plane 4 is in abutment against a straight baffle 5.

[0019] The strip foam 1 mentioned above is PMI foam. When selecting the foam to be used, the foam itself needs to have a certain rigidity to ensure that no elastic deformation occurs during the milling process of the product. At the same time, the selected foam needs to have strong adhesiveness to ensure the firmness of the adhesion between the foam and the honeycomb product, and prevent the occurrence of debonding and overcutting due to low adhesion during the processing. Through the test and comparison of the adhesion and foam rigidity of various foams, PMI foam with certain rigidity and strong adhesion was finally selected for support bonding and fixing.

[0020] The aforementioned holding plane 4 and the straight baffle 5 are bonded together by double-sided adhesive.

[0021] The bottom end of the aforementioned straight baffle plate 5 is connected to the processing reference surface 2 via a fixing block 6 .

[0022] The aforementioned thin-walled special-shaped curved surface part 3 is a composite honeycomb-shaped part.

[0023] The aforementioned straight baffle plate 5 is made of steel or aluminum.

[0024] The aforementioned holding processing method of the holding processing device for thin-walled special-shaped curved surface parts is to sequentially bond the inner side walls in the width direction of the strip foam 1 to the surface of the thin-walled special-shaped curved surface part 3 along a direction perpendicular to the processing reference plane 2; then cut the outer side walls in the width direction of each strip foam 1 along a direction perpendicular to the processing reference plane 2, so that the outer side walls of each strip foam 1 are on the same plane, and the plane is the holding plane 4; use the straight baffle plate 5 to abut against the holding plane 4 to complete the support and holding of the thin-walled special-shaped curved surface part 3 during processing.

[0025] The cutting process of the aforementioned holding plane 4 is as follows: after the thin-walled special-shaped curved surface part 3 and each strip of foam 1 are fixed to the processing reference surface 2 of the five-axis milling machine, the five-axis milling machine spindle A axis is swung to 90° for milling to obtain the aforementioned holding plane 4.

Claims

1. A holding and processing device for thin-walled special-shaped curved surface parts, characterized in that: It comprises more than one layer of strip foam (1) stacked in a direction perpendicular to a processing reference plane (2), wherein the inner side walls of each strip foam (1) in the width direction are bonded to the outer surface of a thin-walled special-shaped curved surface piece (3) to be processed, and the outer side walls are located on a holding plane (4) perpendicular to the processing reference plane (2); the holding plane (4) abuts against a straight baffle (5).

2. The holding and processing device for thin-walled special-shaped curved surface parts according to claim 1, characterized in that: The strip-shaped foam (1) is PMI foam.

3. The holding and processing device for thin-walled special-shaped curved surface parts according to claim 1, characterized in that: The holding plane (4) and the straight baffle (5) are bonded together via double-sided adhesive.

4. The holding and processing device for thin-walled special-shaped curved surface parts according to claim 1, characterized in that: The bottom end of the straight-face baffle (5) is connected to the processing reference surface (2) via a fixing block (6).

5. The holding and processing device for thin-walled special-shaped curved surface parts according to claim 1, characterized in that: The thin-walled special-shaped curved surface part (3) is a composite material honeycomb-shaped part.

6. The holding and processing device for thin-walled special-shaped curved surface parts according to claim 1, characterized in that: The straight-facing baffle (5) is made of steel or aluminum.

7. A method for holding and processing a thin-walled special-shaped curved surface part according to any one of claims 1 to 6, characterized in that: The inner side walls of the strip foam (1) in the width direction are sequentially bonded to the surface of the thin-walled special-shaped curved surface part (3) in a direction perpendicular to the processing reference plane (2); the outer side walls of each strip foam (1) in the width direction are then cut in a direction perpendicular to the processing reference plane (2) so that the outer side walls of each strip foam (1) are located on the same plane, which is used as a holding plane (4); a straight baffle plate (5) is used to abut against the holding plane (4) to complete the support and holding of the thin-walled special-shaped curved surface part (3) during processing.

8. The holding processing method according to claim 7, characterized in that: The cutting process of the holding plane (4) is as follows: after the thin-walled special-shaped curved surface part (3) and each strip of foam (1) are fixed on the processing reference surface (2) of the five-axis milling machine, the main axis A of the five-axis milling machine is swung to 90 degrees for milling to obtain the holding plane (4).

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