Clamp device of structural part

Abstract

The embodiment of the utility model provides a fixture device of a structural member, which comprises a base and a functional die body, the functional die body comprises a positioning plate and a supporting member which are connected with each other, the positioning plate is arranged on the front side part of the base, and a gap is arranged between the supporting member and the front side part of the base; the structural part is provided with an inner cavity groove and is provided with a positioning area and a to-be-machined area. The inner cavity groove in the positioning area is arranged on the supporting piece in a sleeving mode, the positioning area is fixed to the supporting piece, and the inner cavity groove in the area to be machined is exposed. The clamp device can stably position and clamp a structural part, auxiliary clamping is not needed, the clamp device has the advantages of being easy and convenient to operate and the like, and at least the quality problem caused by unstable clamping of a composite part in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to milling processing technical field, concretely relates to a fixture device of structural part. BACKGROUND

[0002] In the aerospace industry, there are a large number of parts made of composite materials, such as wing, fuselage and other structural parts. These parts often have internal cavity groove structures for wiring, installing small devices or reducing weight. Composite materials usually have anisotropy, and their mechanical properties differ in different directions. During milling of the internal cavity groove, uneven distribution of cutting force can easily cause material delamination, tearing and other defects. Therefore, a special fixture is needed to firmly and reasonably clamp the workpiece to ensure uniform stress during processing and reduce the occurrence of such quality problems.

[0003] Further, the special fixture for milling the internal cavity groove of the composite part on the market is based on the vacuum adsorption principle. This type of fixture uses a vacuum pump to form a negative pressure environment on the contact surface of the fixture and the workpiece, and then tightly adsorbs the composite material part. Some fixtures use self-adaptive positioning fixture structures, which use adjustable positioning blocks and clamping elements to adapt to the irregular shape of the workpiece, and then apply clamping force after precise positioning. There are also modular combination fixtures, hydraulic drive clamping fixtures, etc. It can be seen that the current fixtures either need other clamping systems or require high-technology positioning parts. These fixtures have high cost, high technology, complex structure and other problems, and are not suitable for mass production and simple operation in factories. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the utility model provides a fixture device for structural parts made of composite materials, which can achieve stable positioning and clamping, and has the advantages of simple operation. At least, it solves the quality problems caused by the inability to firmly clamp the composite parts in the prior art.

[0005] The utility model embodiment provides a fixture device for structural parts, which comprises a base and a functional mold body, the functional mold body comprises a positioning plate and a support connected to each other, the positioning plate is arranged on the front side of the base, and the support has a gap between the front side of the base; the structural part is provided with an internal cavity groove and has a positioning area and a to-be-processed area; the internal cavity groove at the positioning area is sleeved on the support, and the positioning area is fixed on the support, and the internal cavity groove at the to-be-processed area is exposed.

[0006] The utility model has the advantages of:

[0007] The utility model discloses the fixture device of structural member, need not the equipment auxiliary clamping, still have low cost, simple and easy operation and so on advantage, to the positioning and clamping of the structural member made of composite material of small processing area, product inner cavity groove narrow, product shape irregular also can be simply completed, and this fixture is applicable to all general numerical control machine tool of market.

[0008] The utility model discloses the fixture device (this structural member is provided with inner cavity groove) of structural member is provided with a kind of functional mould body of adaptation to the inner cavity groove profile, according to the positioning hole of structural member is processed on this functional mould body, positioning and clamping effect are carried out by dowel and paste release cloth, to solve the problem of unstable clamping of composite material in prior art, again cooperation base can be applicable to the clamping of any numerical control machine tool. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed in the embodiments will be simply introduced below, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0010] Figure 1 It is the perspective view of the fixture device of structural member of the utility model embodiment.

[0011] Figure 2 It is Figure 1 The side view of the first visual angle of fixture device shown.

[0012] Figure 3 It is Figure 1 The side view of the second visual angle of fixture device shown.

[0013] Figure 4 It is Figure 1 The sectional view of fixture device along section line A-A shown.

[0014] Figure 5 It is Figure 1 The structural schematic diagram of structural member shown.

[0015] Figure 6 It is Figure 1 The exploded schematic view of structural member and functional mould body shown. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application. In each drawing, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, each part in the drawings is not drawn in proportion.

[0017] In the description of the present application, it should be explained that the terms "upper", "lower", "inner", "outer", "top", "bottom", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0018] Meanwhile, some terms are used in the patent specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The patent specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinction.

[0019] In addition, it should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0020] It should be understood that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] Figure 1 and Figure 2 A fixture device 100 of a structural member 300 is provided, which includes a base 10 and a functional mold 20. The functional mold 20 includes a positioning plate 22 and a support 24 connected to each other. Specifically, the positioning plate 22 and the support 24 are an integral structure.

[0022] The positioning plate 22 is arranged on the front side 12 of the base 10.

[0023] Specifically, as shown in Figure 2 , the positioning plate 22 is positioned between the front side 12 of the base 10 by two first pins 3 and is fastened by two screws 5.

[0024] The support 24 has a gap with the front side 12 of the base 10. The structural member 300 is provided with an inner cavity groove 302, and the structural member 300 has a positioning area 304 and a to-be-processed area 306. The inner cavity groove 302 at the positioning area 304 is sleeved on the support 24 and the positioning area 304 is fixed on the support 24, and the inner cavity groove 302 at the to-be-processed area 306 is exposed.

[0025] Specifically, the shape of the inner cavity groove 302 at the positioning area 304 is matched with the shape of the support 24.

[0026] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , specifically, one side of the positioning area 304 is provided with two first positioning holes 314, and the other side of the positioning area 304 is provided with a second positioning hole 316, so that three second pins 6 pass through the two first positioning holes 314 and the second positioning hole 316 respectively to fix the positioning area 304 of the structural member 300 on the support 24.

[0027] Further, before the positioning area 304 of the structural member 300 is fixed on the support 24, a release cloth (not shown in the figure) for clamping the structural member 300 is attached between the inner cavity groove 302 at the positioning area 304 and the support 24. In this embodiment, as a non-limiting example, the release cloth is a polytetrafluoroethylene cloth or the like.

[0028] The inner cavity groove 302 at the to-be-processed area 306 is exposed to machine the inner cavity groove 302 at the to-be-processed area 306 into a preset shape by a tool of a numerical control machine tool. In this embodiment, the preset shape is a U or V shape. In this embodiment, the tool is a milling tool.

[0029] The opening of the inner cavity groove 302 at the to-be-processed area 306 faces the direction close to the base 10; that is, the opening of the inner cavity groove 302 at the to-be-processed area 306 faces the right side, as shown in Figure 1 andFigure 2 as shown.

[0030] Further, the structural member 300 also has a top opening 307 and a bottom opening 309, the top opening being in communication with the inner cavity groove 302 at the region to be machined 306, and the bottom opening 309 being in communication with the inner cavity groove 302 at the positioning region 304.

[0031] Further, the left side 14 and the right side 16 of the base 10 are respectively provided with two grooves, through which the V-shaped clamp or the vice of the numerical control machine tool clamps the base 10 on the machining platform of the numerical control machine tool.

[0032] In the embodiment, the functional mold body 20 serves as a support and a positioning.

[0033] The structural member 300 is made of a composite material. In the embodiment, as a non-limiting example, the structural member 300 is a tip edge rib of a wing tip or a tip edge rib of a flap. The region to be machined 306 is a tip end region of the tip edge rib, which is particularly thin and small in size. In the prior art, when machining (e.g. milling) the inner cavity groove of the tip end region of the tip edge rib, the tip end region (i.e. the region to be machined) of the tip edge rib is particularly thin and small in size, and the uneven distribution of cutting force easily leads to defects such as delamination and tearing of the material. In the embodiment, the specially designed clamp device 100 is used to stably and reasonably clamp the structural member 300 as the tip edge rib, so as to ensure uniform stress during machining and reduce the occurrence of such quality problems. In the embodiment, the inner cavity groove 302 provided in the structural member 300 is in the shape of U or V.

[0034] The specific clamping operation process is as follows:

[0035] The functional mold body 20 and the three pins 06 serve the positioning and clamping of the structural member 300. As Figures 1 to 3 shown.

[0036] When clamping the structural member 300, the three pins 6 are first removed, a release cloth (e.g. a Teflon cloth) is attached to the contact surface of the functional mold body 20 and the inner cavity groove of the structural member 300, the structural member 300 is aligned and positioned on the functional mold body 20, and then the three pins 6 are used to achieve the purpose of positioning the structural member 300, while the release cloth serves the purpose of clamping the structural member 300. Then, the functional mold body 20 and the base 10 are locked by the two pins 3 and the two screws 5, so as to meet the machining of any common machine tool clamping structure in the market.

[0037] Optionally, different sizes of pins 6 are replaced to adapt to the machining of different structural members 300 with different positioning holes.

[0038] Optionally, by replacing the base 10 of different profiles and the pin 3 and screw 5 of different sizes, the fixture is adapted to different functional dies 20.

[0039] It can be understood that, according to the processing process requirements of the structural member 300, different bases 10 and functional dies 20 are combined to meet the processing process.

[0040] The utility model relates to a special fixture for the inner cavity groove milling of composite material parts, and is particularly suitable for positioning and clamping in industrial production.

[0041] The special fixture (i.e. the fixture device of the structural member) designed in the utility model does not need equipment auxiliary clamping, and also has the advantages of low cost, simple operation, etc. The positioning and clamping of the structural member made of composite material, which has a small processing area, narrow product inner cavity groove and irregular product shape, can also be simply completed, and the fixture is suitable for all common machine tools on the market.

[0042] The wing tip edge sealing rib metal machining device (i.e. the fixture device of the structural member, which is provided with an inner cavity groove) is provided with a functional die adapted to the inner cavity groove profile, which is processed on the functional die according to the positioning hole of the structural member. The positioning and clamping effect is realized through the pin and the release die cloth, so as to solve the problem of unstable clamping of the composite material part in the prior art. In combination with the base, the fixture can be clamped on any numerical control machine tool.

[0043] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixture device for a structural member, characterized by, The utility model relates to a structure for positioning and clamping a workpiece on a numerical control machine tool, comprising: a base and a functional mold body, the functional mold body comprising a positioning plate and a support connected to each other, the positioning plate being arranged on the front side of the base, and the support having a gap with the front side of the base; the structure has an inner cavity groove and a positioning area and a to-be-processed area; the inner cavity groove at the positioning area is sleeved on the support and the positioning area is fixed on the support, and the inner cavity groove at the to-be-processed area is exposed.

2. The gripper device of claim 1, wherein The inner cavity groove at the to-be-processed area is exposed to machine the inner cavity groove at the to-be-processed area into a preset shape by a tool of the numerical control machine tool.

3. The gripper device of claim 1, wherein The positioning plate and the front side of the base are positioned by two first pins and fastened by two screws.

4. The gripper device of claim 1, wherein One side of the positioning area is provided with two first positioning holes, and the other side of the positioning area is provided with a second positioning hole, so that three second pins pass through the two first positioning holes and the second positioning hole respectively to fix the positioning area on the support.

5. The gripper device of claim 1, wherein, Before the positioning area and the support are fixed, a release cloth for clamping the structure is attached between the inner cavity groove at the positioning area and the support.

6. The clamp apparatus of claim 1, wherein, The structure is an edge rib of a wing tip or an edge rib of an aileron.

7. The gripper device of claim 1, wherein The shape of the inner cavity groove at the positioning area is matched with the shape of the support, and the support and the positioning plate are an integral structure.

8. The clamp apparatus of claim 1, wherein, The opening of the inner cavity groove at the to-be-processed area faces the base.

9. The clamp apparatus of claim 1, wherein, The structure also has a top opening and a bottom opening, the top opening being communicated with the inner cavity groove at the to-be-processed area, and the bottom opening being communicated with the inner cavity groove at the positioning area.

10. The clamp apparatus of claim 2, wherein, The left side and the right side of the base are respectively provided with two grooves, and a V-shaped clamp or a vice of the numerical control machine tool clamps the base on a machining platform of the numerical control machine tool through the two grooves.

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