A tool for turning and milling fairing

Abstract

The application belongs to the technical field of tooling design and processing, and particularly relates to a turning and milling dual-purpose tool for a fairing. The turning and milling dual-purpose tool for the fairing comprises a positioning sleeve, a plug, at least two columns and at least two pressing members. The positioning sleeve is provided with a positioning hole, the fairing is detachably inserted into the positioning hole, and the hole wall of the positioning hole can be attached to the outer wall surface of the fairing. The plug comprises a positioning member and a connecting member, the positioning member is connected with the connecting member, the positioning member is detachably inserted into the fairing, and the peripheral surface of the positioning member can be attached to the inner wall surface of the fairing. The at least two columns are detachably arranged on a rotary table of a milling machine or a machining center, and the at least two columns are uniformly and equiangularly arranged. The at least two pressing members correspond to the two columns one by one, the pressing members are liftably arranged on the corresponding columns, and the pressing members can abut against the end of the fairing away from the positioning sleeve. The turning and milling dual-purpose tool for the fairing is easy to realize the clamping and alignment of the fairing.

Description

Technical Field

[0001] This application belongs to the field of tooling design and processing technology, specifically relating to a milling and turning tooling for a fairing. Background Technology

[0002] In the aerospace field, fairings are very important components. They are installed on the nose or outside of aircraft (such as rockets and airplanes) to protect internal loads and reduce air resistance.

[0003] However, in related technologies, fairings typically have complex aerodynamic shapes, making them difficult to clamp and align during machining and milling. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a turning and milling fixture for fairings, which aims to at least partially solve the technical problem of difficulty in clamping and aligning fairings during turning and milling.

[0005] The technical solution of this invention is as follows: A milling and turning fixture for a fairing includes: a positioning sleeve with a positioning hole, the fairing being detachably inserted into the positioning hole, the wall of the positioning hole being able to fit against the outer wall surface of the fairing; a plug including a positioning element and a connecting element, the positioning element being connected to the connecting element, the positioning element being detachably inserted into the fairing, the circumferential surface of the positioning element being able to fit against the inner wall surface of the fairing; at least two columns, detachably mounted on a turntable of a milling machine or machining center, the at least two columns being evenly spaced at equal angles; and at least two clamping elements, corresponding one-to-one with the two columns, the clamping elements being liftably mounted on the corresponding columns, the clamping elements being able to abut against the end of the fairing away from the positioning sleeve.

[0006] In some implementations, the surface equation of the positioning hole wall is consistent with the surface equation of the outer wall of the fairing.

[0007] In some implementations, the surface equation of the circumferential surface of the positioning element is consistent with the surface equation of the inner wall surface of the fairing.

[0008] In some implementations, the positioning sleeve has a receiving hole communicating with the positioning hole, and a portion of the fairing can be detachably inserted into the receiving hole.

[0009] In some implementations, the connection between the receiving hole and the positioning hole is transitioned by an arc.

[0010] In some implementations, the receiving hole and the positioning hole are coaxially arranged.

[0011] In some embodiments, the positioning member has a side surface that connects to the connector; wherein the connection between the side surface and the circumferential surface of the positioning member is a rounded transition.

[0012] In some implementations, the end face of the connector away from the positioning member has a pin hole.

[0013] In some implementations, the inner wall of the fairing is provided with a plurality of lugs; the circumferential surface of the positioning member is provided with a plurality of clearance grooves, and the plurality of clearance grooves correspond one-to-one with the plurality of lugs, and the lugs can be detachably inserted into the corresponding clearance grooves.

[0014] In some implementations, the diameter of the connector is smaller than the diameter of the positioning element.

[0015] The beneficial effects of the present invention include at least the following: Because the positioning sleeve has a positioning hole, the fairing can be detachably inserted into the positioning hole. The wall of the positioning hole can fit against the outer wall surface of the fairing. The plug includes a positioning element and a connecting element. The positioning element is connected to the connecting element. The positioning element can be detachably inserted into the fairing. The circumferential surface of the positioning element can fit against the inner wall surface of the fairing. At least two columns are detachably mounted on the turntable of a milling machine or machining center. At least two columns are evenly spaced at equal angles. At least two clamping elements correspond one-to-one with the two columns. The clamping elements are liftably mounted on the corresponding columns. The clamping elements can abut against the end of the fairing away from the positioning sleeve. Therefore, when... When machining the fairing, the positioning sleeve is clamped by a three-jaw or four-jaw chuck on the lathe, and the outer diameter is aligned to achieve the clamping and alignment of the positioning sleeve. Then, the fairing is inserted into the positioning hole, and the fairing is adjusted so that the fairing and the positioning hole are coaxial, ensuring that the wall of the positioning hole can fit against the outer wall surface of the fairing. The connecting piece is operated to insert the positioning piece into the fairing, so that the circumferential surface of the positioning piece fits against the inner wall surface of the fairing to hold the fairing in place. This effectively fixes the fairing and ensures that the position of the fairing is determined, achieving the clamping and alignment of the fairing. Finally, the fairing is machined to ensure the machining accuracy of the fairing. When milling the fairing, place the locating sleeve vertically on the turntable of the milling machine or machining center. Install at least two columns on the turntable of the milling machine or machining center, surrounding the locating sleeve. Then, vertically insert the fairing into the locating hole. Adjust the fairing so that it is coaxial with the locating hole, ensuring that the wall of the locating hole fits against the outer wall of the fairing. Operate the clamping member, causing it to descend on the columns. The clamping member abuts against the end of the fairing furthest from the locating sleeve, effectively fixing the fairing and ensuring its position is fixed. This achieves clamping and alignment of the fairing. Then, mill the fairing. It is understood that during the milling of the fairing, the locating member is no longer inserted inside the fairing; that is, the locating member is removed from inside the fairing to avoid the plug interfering with the milling of the inner wall of the fairing.

[0016] Moreover, the lathe clamps the locating sleeve with a three-jaw or four-jaw chuck to achieve clamping and alignment of the fairing, avoiding direct clamping on the heat shield layer of the fairing and thus preventing damage to the heat shield layer, thereby ensuring the safety of the fairing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the fit between the fairing and the plug in a milling and turning tool for fairings according to some embodiments; Figure 2 for Figure 1 A schematic diagram of the positioning sleeve of the milling and turning tool for the central fairing; Figure 3 for Figure 1 Side view of the middle plug; Figure 4 for Figure 1 Front view of the middle plug; Figure 5 This is a schematic diagram of the fit between the fairing and the clamping member in a milling and turning tooling for fairings according to some embodiments.

[0019] In the attached image: Positioning sleeve 10, positioning hole 11, receiving hole 12; plug 20, positioning part 21, connecting part 22, clearance groove 23; column 30; clamping part 40; fairing 50. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0024] Specific technical solutions will now be described in detail with reference to the accompanying drawings, which are not necessarily drawn to scale. Similar or identical reference numerals may be used to designate the same or similar parts in different figures. The use of similar or identical reference numerals in different figures does not mean that all figures including similar or identical reference numerals constitute a single or the same embodiment. The accompanying drawings illustrate the various embodiments discussed in this application in a generalized, illustrative, and not restrictive manner.

[0025] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The milling and turning fixture for the fairing in this embodiment includes: a positioning sleeve 10, a plug 20, columns 30, and clamping members 40. The positioning sleeve 10 has a positioning hole 11, into which the fairing 50 is detachably inserted. The wall of the positioning hole 11 can fit against the outer wall surface of the fairing 50. The plug 20 includes a positioning member 21 and a connecting member 22. The positioning member 21 is connected to the connecting member 22 and is detachably inserted into the fairing 50. The circumferential surface of the positioning member 21 can fit against the inner wall surface of the fairing 50. At least two columns 30 are detachably mounted on the turntable of a milling machine or machining center, and are evenly spaced at equal angles. At least two clamping members 40 correspond one-to-one with the two columns 30. The clamping members 40 are vertically mounted on the corresponding columns 30 and can abut against the end of the fairing 50 furthest from the positioning sleeve 10. For example, the column 30 has threads, and the clamping element 40 can be a nut.

[0026] Because the positioning sleeve 10 has a positioning hole 11, the rectifier 50 can be detachably inserted into the positioning hole 11. The wall of the positioning hole 11 can fit against the outer wall surface of the rectifier 50. The plug 20 includes a positioning element 21 and a connecting element 22. The positioning element 21 is connected to the connecting element 22. The positioning element 21 can be detachably inserted into the rectifier 50. The circumferential surface of the positioning element 21 can fit against the inner wall surface of the rectifier 50. At least two columns 30 are detachably mounted on the turntable of a milling machine or machining center. At least two columns 30 are evenly spaced at equal angles. At least two clamping elements 40 correspond one-to-one with the two columns 30. The clamping elements 40 are liftably mounted on the corresponding columns 30. The clamping elements 40 can abut against the end of the rectifier 50 away from the positioning sleeve 10. Therefore, When machining the fairing 50, the positioning sleeve 10 is clamped by the three-jaw or four-jaw chuck of the lathe, and the outer circle is aligned to achieve the clamping and alignment of the positioning sleeve 10. Then, the fairing 50 is inserted into the positioning hole 11, and the fairing 50 is adjusted so that the fairing 50 and the positioning hole 11 are coaxial, so that the hole wall of the positioning hole 11 can fit with the outer wall surface of the fairing 50. The connecting piece 22 is operated to insert the positioning piece 21 into the fairing 50, so that the circumferential surface of the positioning piece 21 fits with the inner wall surface of the fairing 50 to hold the fairing 50 in place, which can effectively fix the fairing 50 and ensure that the position of the fairing 50 is determined, thus achieving the clamping and alignment of the fairing 50. Then, the fairing 50 is machined to ensure the machining accuracy of the fairing 50. When milling the fairing 50, place the positioning sleeve 10 vertically on the turntable of the milling machine or machining center, install at least two columns 30 on the turntable of the milling machine or machining center and surround the positioning sleeve 10, then vertically insert the fairing 50 into the positioning hole 11, adjust the fairing 50 so that the fairing 50 is coaxial with the positioning hole 11, and ensure that the hole wall of the positioning hole 11 can fit against the outer wall surface of the fairing 50. Operate the clamping member 40 so that the clamping member 40 descends on the column 30 and abuts against the end of the fairing 50 away from the positioning sleeve 10, which can effectively fix the fairing 50, ensure that the position of the fairing 50 is determined, and realize the clamping and alignment of the fairing 50. Then, mill the fairing 50. Understandably, when milling the fairing 50, the positioning member 21 is no longer inserted inside the fairing 50. That is, the positioning member 21 is removed from inside the fairing 50 to avoid the plug 20 interfering with the milling of the inner wall surface of the fairing 50.

[0027] Moreover, the lathe clamps the positioning sleeve 10 with a three-jaw chuck or a four-jaw chuck to achieve clamping and alignment of the fairing 50, avoiding direct clamping on the heat protection layer of the fairing 50 and thus preventing damage to the heat protection layer, thereby ensuring the safety of the fairing 50.

[0028] In some embodiments, the surface equation of the positioning hole 11 is consistent with the surface equation of the outer wall of the fairing 50, so as to ensure that the hole wall of the positioning hole 11 can fit against the outer wall of the fairing 50.

[0029] In some embodiments, the surface equation of the circumferential surface of the positioning member 21 is consistent with the surface equation of the inner wall surface of the fairing 50, so as to ensure that the circumferential surface of the positioning member 21 can fit against the inner wall surface of the fairing 50.

[0030] Combination Figure 1 and Figure 2 In some embodiments, the positioning sleeve 10 has a receiving hole 12 that communicates with the positioning hole 11. A portion of the shunting cover 50 is detachably inserted into the receiving hole 12. The receiving hole 12 accommodates a portion of the shunting cover 50 to accommodate errors and ensure that the wall of the positioning hole 11 can fit against the outer wall of the shunting cover 50.

[0031] In some embodiments, the connection between the receiving hole 12 and the positioning hole 11 is made by a rounded transition to avoid scratching the fairing 50 and personnel, thus ensuring the safety of the fairing 50 and personnel. At the same time, stress concentration can be avoided, preventing the positioning sleeve 10 from cracking and ensuring the service life of the positioning sleeve 10.

[0032] Combination Figure 1 and Figure 2 In some embodiments, the receiving hole 12 and the positioning hole 11 are coaxially arranged to ensure that the hole wall of the positioning hole 11 can fit against the outer wall surface of the shroud 50.

[0033] In some embodiments, the positioning sleeve 10 has an end face away from the receiving hole 12, and the connection between the hole wall of the positioning hole 11 and the end face is made by a rounded transition to avoid scratching the fairing 50 and personnel, thus ensuring the safety of the fairing 50 and personnel. At the same time, it can avoid stress concentration, prevent the positioning sleeve 10 from cracking, and ensure the service life of the positioning sleeve 10.

[0034] In some embodiments, the connection between the connector 22 and the positioning member 21 is made of arc transition to avoid scratching the fairing 50 and personnel, thus ensuring the safety of the fairing 50 and personnel. At the same time, it can avoid stress concentration, prevent the plug 20 from cracking, and ensure the service life of the plug 20.

[0035] Combination Figure 3 In some embodiments, the positioning member 21 has a side surface that connects to the connecting member 22. The connection between the side surface and the circumference of the positioning member 21 is achieved by a rounded transition to avoid scratching the fairing 50 and personnel, ensuring the safety of the fairing 50 and personnel. At the same time, it can avoid stress concentration, prevent the plug 20 from cracking, and ensure the service life of the plug 20.

[0036] Combination Figure 3 In some embodiments, the end face of the connector 22 away from the positioning member 21 has a pin hole. After the circumferential surface of the positioning member 21 is attached to the inner wall surface of the fairing 50, in order to effectively fix the fairing 50, the adjusting pin of the lathe is inserted into the pin hole to apply force to the connector 22. The connector 22 applies force to the positioning member 21 so that the positioning member 21 can hold the fairing 50, ensuring that the position of the fairing 50 is determined, and realizing the clamping and alignment of the fairing 50.

[0037] Combination Figure 4 In some embodiments, the inner wall of the fairing 50 is provided with multiple lugs. The circumferential surface of the positioning member 21 is provided with multiple clearance grooves 23, and the multiple clearance grooves 23 correspond one-to-one with the multiple lugs. The lugs can be detachably inserted into the corresponding clearance grooves 23. By accommodating the corresponding lugs through the clearance grooves 23, clearance is achieved to ensure that the circumferential surface of the positioning member 21 can be in contact with the inner wall of the fairing 50.

[0038] Combination Figure 3 In some embodiments, the diameter of the connector 22 is smaller than the diameter of the positioning member 21 to avoid the positioning member 21 being inserted into the fairing 50, and at the same time, to reduce costs.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0042] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0043] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A cowl-milling dual-purpose tooling, characterized by, include: The positioning sleeve has a positioning hole, and the fairing can be detachably inserted into the positioning hole. The wall of the positioning hole can fit against the outer wall surface of the fairing. The plug includes a positioning element and a connecting element. The positioning element is connected to the connecting element. The positioning element can be detachably inserted into the fairing. The peripheral surface of the positioning element can fit against the inner wall surface of the fairing. At least two columns, a turntable detachably mounted on a milling machine or machining center, and at least two of the columns are evenly spaced at equal angles; At least two clamping members are provided, each corresponding to one of the two columns. The clamping members are vertically movable and can abut against the end of the fairing that is away from the positioning sleeve.

2. The milling and turning fixture for the fairing according to claim 1, characterized in that, The surface equation of the positioning hole wall is consistent with the surface equation of the outer wall of the fairing.

3. The milling and turning fixture for the fairing according to claim 1, characterized in that, The surface equation of the circumferential surface of the positioning component is consistent with the surface equation of the inner wall surface of the fairing.

4. The milling and turning fixture for the fairing according to any one of claims 1-3, characterized in that, The positioning sleeve has a receiving hole that communicates with the positioning hole, and a portion of the fairing can be detachably inserted into the receiving hole.

5. The milling and turning fixture for the fairing according to claim 4, characterized in that, The connection between the receiving hole and the positioning hole is achieved through a circular arc transition.

6. The milling and turning fixture for the fairing according to claim 4, characterized in that, The receiving hole and the positioning hole are coaxially arranged.

7. The milling and turning fixture for the fairing according to any one of claims 1-3, characterized in that, The positioning element has a side that connects to the connecting element; The connection between the side surface and the circumference of the positioning member is achieved through a rounded transition.

8. The milling and turning fixture for the fairing according to any one of claims 1-3, characterized in that, The end face of the connector away from the positioning member has a pin hole.

9. The milling and turning fixture for the fairing according to any one of claims 1-3, characterized in that, The inner wall of the fairing is provided with multiple lugs; The positioning component has multiple clearance grooves on its circumferential surface, and each clearance groove corresponds to a different support lug. The support lug can be detachably inserted into the corresponding clearance groove.

10. The milling and turning fixture for the fairing according to any one of claims 1-3, characterized in that, The diameter of the connector is smaller than the diameter of the positioning component.

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