High-precision adjustable lifting supporting device for eliminating clamping deformation

Abstract

The utility model provides a high-precision adjustable lifting support device for eliminating clamping deformation, which can improve the repair efficiency of the deformation of the existing airplane parts and realize accurate micro-adjustment control, and comprises a support shell, an adjusting shaft, a transmission component and a support component, a first through hole is formed in the center axis direction of the supporting shell, a second through hole communicated with the first through hole is perpendicularly formed in the middle of the first through hole, and the first through hole and the second through hole are in a cross shape. The adjusting shaft is inserted into the second through hole, and a tangent plane with a triangular section is downwards arranged on the contact surface of the adjusting shaft and the first through hole; the transmission assembly is arranged at one end / two ends of the second through hole, and an adjusting screw rod of the transmission assembly is connected to the end part of the adjusting shaft; the bottom of the supporting assembly is matched with the section in shape, and when the adjusting screw is continuously screwed in / out, the adjusting shaft is driven to transversely move, so that the supporting assembly in contact with the section of the adjusting shaft is continuously ejected out / retracted into the first through hole.

Description

Technical Field

[0001] The utility model relates to the field of aircraft parts processing, in particular to a high-precision adjustable lifting support device for eliminating clamping deformation. Background Art

[0002] In the current aircraft parts production process, clamping fixtures are often used to secure parts to ensure machining stability between the tooling and the parts. However, due to the use of clamping fixtures, parts often experience local deformation during the clamping process.

[0003] Currently, to eliminate localized deformation in parts, shims are typically placed under the parts, and then a jack is used to reset the deformed points or surfaces. This requires the use of shims of varying sizes, and conventional jacks are unable to precisely adjust to the millimeter or even micron level. After the jack's major adjustments, manual intervention is required for minor reset adjustments. This results in long processing times and a heavy workload. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision adjustable lifting support device for eliminating clamping deformation, which can improve the repair efficiency of existing aircraft parts deformation, realize micro-adjustment control, and the adjustment height is controllable, stable and reliable.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] A high-precision adjustable lifting support device for eliminating clamping deformation, the adjustable lifting support device comprising:

[0007] A supporting shell is provided with a first through hole in the direction of the central axis of the supporting shell, and a second through hole is provided perpendicularly in the middle of the first through hole and penetrates the first through hole, so that the first through hole and the second through hole form a cross shape;

[0008] An adjusting shaft is inserted into the second through hole, and a cross-section of the adjusting shaft is downwardly provided on the contact surface with the first through hole;

[0009] A transmission assembly is provided at one end or both ends of the second through hole, and an adjusting screw of the transmission assembly is connected to an end of the adjusting shaft;

[0010] The support assembly, the bottom of the support assembly matches the cross-sectional shape. When the adjusting screw is continuously screwed in / out, the adjusting shaft is driven to move laterally, so that the support assembly in contact with the cross-sectional surface of the adjusting shaft is continuously pushed out / retracted to the outside / inside of the first through hole.

[0011] In a preferred embodiment of the present invention, the cross-sectional shape of the above-mentioned section includes: the first right-angled side of the section is set vertically downward from the first contact point between the first through hole and the second through hole; the hypotenuse of the section is set obliquely downward from the second contact point opposite to the first contact point toward the first right-angled side, and the connection between the first right-angled side and the hypotenuse is an arc transition.

[0012] In a preferred embodiment of the present invention, the support assembly includes:

[0013] The support shaft includes a cut-away portion, a first cylindrical portion, and a second cylindrical portion, which are sequentially arranged from bottom to top, wherein the cut-away portion is assembled within the cut-away portion; the diameter of the first cylindrical portion is larger than the diameters of the cut-away portion and the second cylindrical portion, and the diameters of the cut-away portion and the second cylindrical portion are the same;

[0014] A compression spring is assembled on the second cylindrical portion.

[0015] In a preferred embodiment of the present invention, the above-mentioned first through hole includes a first cylindrical through hole and a second cylindrical through hole whose diameters decrease successively from bottom to top and are coaxial. The diameter of the second cylindrical portion is smaller than the diameter of the second cylindrical through hole, so that the second cylindrical portion can be ejected.

[0016] In a preferred embodiment of the present invention, the transmission assembly includes:

[0017] A transmission nut is fixed to the second through hole of the support housing by a screw, and a threaded hole for screwing the adjusting screw into the middle of the transmission nut is provided;

[0018] The adjusting screw includes a first thread segment, a second thread segment and a screw head which are arranged in sequence. The first thread segment contacts the support assembly during the screwing process to push the support assembly out; the second thread segment is threadedly connected to the threaded hole of the transmission nut.

[0019] In a preferred embodiment of the present invention, a second limiting pin assembly hole is provided on the support shell, and the limiting pin is inserted into the second limiting pin assembly hole to complete the limiting of the adjustment shaft and the transmission assembly.

[0020] In a preferred embodiment of the present invention, the support shell is provided with assembly planes at the port positions at both ends of the second through hole.

[0021] In a preferred embodiment of the present invention, the adjustable lifting support device further comprises a clamping seat, which is fixedly arranged at either end of the support shell, and a quick clamping notch is provided on the side of the clamping seat.

[0022] The beneficial effects of the embodiments of the present utility model are:

[0023] 1. The adjustable lifting support device in the utility model can replace the traditional jack when the parts need to eliminate deformation and perform precise adjustment.

[0024] 2. The cross-section of the adjusting shaft is adjusted so that when the transmission assembly drives the adjusting shaft to move to the second through-hole position, the support assembly located on the cross-section can be lifted up, and its lifting height can be fine-tuned according to the adjusting screw of the transmission assembly. For example, in this technical solution, the height direction of the support assembly can be adjusted by a maximum distance of 0.125 mm for each rotation of the transmission screw, thereby achieving fine-tuning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of an assembled adjustable lifting support device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the moving part of the adjustable lifting support device according to an embodiment of the present utility model;

[0028] Figure 3 This is a structural diagram of the adjustable lifting support device in a disassembled state according to an embodiment of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the support shell of an embodiment of the present utility model.

[0030] Icon: adjustable lifting support device 100; support shell 110; first through hole 111; first cylindrical through hole 1111; second cylindrical through hole 1112; second through hole 112; assembly plane 113; adjusting shaft 120; section 121; first right angle side 1211; hypotenuse 1212; arc transition 1213; transmission assembly 130; adjusting screw 131; first threaded section 1311; second threaded section 1312; screw head 1313; transmission nut 132; limit pin 133; support assembly 140; support shaft 141; section section 1411; first cylindrical section 1412; second cylindrical section 1413; compression spring 142; clamping seat 150; quick clamping notch 151. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] First embodiment

[0038] See Figure 1-4 This embodiment provides a high-precision adjustable lifting support device for eliminating clamping deformation. The adjustable lifting support device 100 includes a support shell 110, an adjustment shaft 120, a transmission assembly 130, a support assembly 140 and a clamping seat 150.

[0039] For details, see Figure 2 The support housing 110 has a first through hole 111 disposed along its central axis for mounting the support assembly 140. A second through hole 112 is disposed perpendicularly in the middle of the first through hole 111, extending therethrough, forming a cross. The second through hole 112 is used to mount the adjustment shaft 120 and the transmission assembly 130.

[0040] Among them, see Figure 4 The first through hole 111 includes a first cylindrical through hole 1111 and a second cylindrical through hole 1112 whose diameters decrease from bottom to top and are coaxial. Since the diameter of the second cylindrical portion of the support assembly 140 is smaller than the diameter of the second cylindrical through hole 1112, the shape of the first through hole 111 can enable the second cylindrical portion to be ejected, but the other parts of the support assembly 140 are still confined within the range of the second cylindrical through hole 1112.

[0041] In this technical solution, the support housing 110 is cylindrical, and the support housing 110 is provided with mounting flat surfaces 113 at the ends of the second through hole 112 to facilitate the installation of the transmission assembly 130. If the support housing 110 is configured as a rectangular body or other polyhedral cylinder, which already has the mounting flat surfaces 113, the additional mounting flat surfaces 113 do not need to be provided.

[0042] The adjusting shaft 120 is inserted into the second through hole 112. Figure 3 The adjusting shaft 120 is provided with a section 121 with a cross section approximately triangular downwardly on the contact surface with the first through hole 111 , and the section 121 is used for assembling the supporting assembly 140 .

[0043] Specifically, the cross-sectional shape of the section 121 includes: a first right-angled side 1211 of the section 121 is set vertically downward from a first contact point between the first through hole 111 and the second through hole 112; a hypotenuse 1212 of the section 121 is set obliquely downward from a second contact point opposite to the first contact point toward the first right-angled side 1211, and an arc transition 1213 is formed at the connection between the first right-angled side 1211 and the hypotenuse 1212 to facilitate the support assembly 140 to be lifted up.

[0044] The cross-sectional shape of the cut surface 121 is circular in plan view.

[0045] The inclination angle of the bevel 1212 can be customized, for example, the commonly used 30°, 45°, and 60°, which facilitates the calculation of the lifting height.

[0046] The transmission assembly 130 is arranged at one end / both ends of the second through hole 112, and the adjusting screw of the transmission assembly 130 is connected to the end of the adjusting shaft 120. The connection can be to set a bearing at the end of the adjusting shaft 120. The assembly position of the bearing can be to set a through hole in the axial direction of the adjusting shaft 120. In this way, it can not only ensure a stable connection, but also make the adjusting screw 131 do not rotate during the rotation process of the adjusting shaft 120, but make a linear motion in the direction of the second through hole 112.

[0047] The bottom shape of the support assembly 140 matches the shape of the cross-section 121. When the adjusting screw 131 is continuously screwed in, the adjusting shaft 120 is driven to move laterally, so that the support assembly 140 in contact with the cross-section 121 of the adjusting shaft 120 is continuously pushed out of the first through hole 111; when the adjusting screw 131 is continuously screwed out, the adjusting shaft 120 is driven to move laterally, so that the support assembly 140 in contact with the cross-section 121 of the adjusting shaft 120 is continuously retracted into the first through hole 111.

[0048] Specifically, the support assembly 140 in this embodiment includes a support shaft 141 and a compression spring 142. The support shaft 141 includes a cut surface 1411, a first cylindrical portion 1412 and a second cylindrical portion 1413 arranged in sequence from bottom to top. The cut surface 1411 is assembled in the cut surface 121; the diameter of the first cylindrical portion 1412 is larger than the diameter of the cut surface 1411 and the second cylindrical portion 1413, and the diameters of the cut surface 1411 and the second cylindrical portion 1413 are the same. In other embodiments, only the diameter of the second cylindrical portion 1413 can be limited to be smaller than the first cylindrical portion 1412 to ensure that the second cylindrical portion 1413 can be passed through the first cylindrical through hole 1111 when being lifted up.

[0049] Compression spring 142 is assembled on second cylindrical portion 1413 to ensure effective contact between cut surface 1411 and cut surface 121, providing stable support. To protect the component, a flexible gasket can be placed on top of second cylindrical portion 1413 to prevent scratches on the component surface. Alternatively, a gasket with a cylindrical, hemispherical, or other shape that matches the deformed shape can be used.

[0050] In this embodiment, the transmission assembly 130 includes a transmission nut 132 and an adjusting screw 131. The transmission nut 132 is fixed to the second through hole 112 of the support shell 110 by a tightening screw 133. A threaded hole is provided in the middle of the transmission nut 132 for the adjusting screw 131 to be screwed in; the adjusting screw 131 includes a first threaded segment 1311, a second threaded segment 1312 and a screw head 1313 arranged in sequence. The first threaded segment 1311 contacts the support assembly 140 during the screwing process to push the support assembly 140 out; the second threaded segment 1312 is threadedly connected to the threaded hole of the transmission nut 132.

[0051] In this embodiment, the adjustment screw 131 utilizes a dual-threaded screw with a micro-adjustment design. By calculating the maximum height adjustment distance of the support assembly 140 corresponding to each rotation of the drive screw, which is 0.125 mm, micro-adjustment is achieved. If the maximum height adjustment distance is required, the drive screw can be replaced with a different pitch and / or the inclination angle of the cut surface 121 can be modified.

[0052] Specifically, a first limit pin assembly hole groove can be set on the transmission nut 132, and a second limit pin assembly hole matching the position and size of the first limit pin assembly hole groove can be set on the support shell 110. The limit pin 133 is inserted into the first limit pin assembly hole and the second limit pin assembly hole in sequence to complete the limiting.

[0053] It is also possible to directly set a second limiting pin assembly hole on the supporting shell. When the transmission nut is assembled, the transmission nut can resist the limiting pin 133 to complete the limiting work of the transmission assembly and the adjustment shaft 120.

[0054] The adjustable lifting support device 100 also includes a clamping seat 150, which is fixed at either end of the support shell 110. Depending on the clamping position, it can be suspended or fixed at the bottom. A quick clamping notch 151 is provided on the side of the clamping seat 150. It has a modular design and can be quickly connected to the workbench and the universal plate.

[0055] The basic operating principle of the adjustable lifting support device 100 in the present invention is: by rotating the adjusting screw 131, the moving length of the adjusting shaft 120 is obtained according to the number of turns of the adjusting screw 131, and then the ejection height of the second cylindrical part 1413 is calculated according to the horizontal movement distance of the adjusting shaft 120.

[0056] In summary, the advantages of the adjustable lifting support device 100 of the present invention are:

[0057] 1. It can replace the traditional jack when parts need to eliminate deformation and make precise adjustments.

[0058] 2. By adjusting the cross-section 121 of the shaft 120, when the transmission assembly 130 drives the adjustment shaft 120 to move to the position of the second through hole 112, the support assembly 140 located on the cross-section 121 can be lifted up, and its lifting height can be fine-tuned according to the adjustment screw 131 of the transmission assembly 130. For example, in this technical solution, the height direction of the support assembly 140 can be adjusted by a maximum distance of 0.125 mm for each rotation of the transmission screw, thereby achieving micron-level fine-tuning.

[0059] 3. The adjustable lifting support device 100 adopts a modular design and can be quickly connected to the workbench and the universal plate. It has a compact design and is easy to use.

[0060] This specification describes examples of embodiments of the present invention and does not mean that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in a variety of alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show the details of specific components. The specific structural and functional details disclosed should not be interpreted as limiting, but are merely representative bases for teaching those skilled in the art to implement the present invention in various forms. It should be understood by those skilled in the art that the multiple features illustrated and described with reference to any one of the figures can be combined with the features illustrated in one or more other figures to form embodiments that are not explicitly illustrated or described. The illustrated combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention can be used for specific applications or implementations as needed.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-precision adjustable lifting support device for eliminating clamping deformation, characterized in that: The adjustable lifting support device comprises: A supporting shell, wherein a first through hole is provided in the central axis direction of the supporting shell, and a second through hole is provided perpendicularly in the middle of the first through hole and penetrates the first through hole, so that the first through hole and the second through hole form a cross shape; an adjusting shaft, the adjusting shaft being inserted into the second through hole, the adjusting shaft being provided with a triangular cross-section downward on a contact surface with the first through hole; a transmission assembly, the transmission assembly being disposed at one end or both ends of the second through hole, the adjustment screw of the transmission assembly being connected to the end of the adjustment shaft; The support assembly has a bottom that matches the shape of the cross-section. When the adjusting screw is continuously screwed in / out, the adjusting shaft is driven to move laterally, so that the support assembly in contact with the cross-section of the adjusting shaft is continuously pushed out / retracted to the outside / inside of the first through hole.

2. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1 is characterized in that: The cross-sectional shape of the section includes: a first right-angled side of the section is set vertically downward from a first contact point between the first through hole and the second through hole; the hypotenuse of the section is set obliquely downward from a second contact point opposite to the first contact point toward the first right-angled side, and the connection between the first right-angled side and the hypotenuse is an arc transition.

3. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1, characterized in that: The support assembly comprises: a support shaft comprising a cutout portion, a first cylindrical portion, and a second cylindrical portion arranged in sequence from bottom to top, the cutout portion being assembled within the cutout portion; the first cylindrical portion having a diameter greater than that of the cutout portion and the second cylindrical portion, and the cutout portion and the second cylindrical portion having the same diameter; A compression spring is assembled on the second cylindrical portion.

4. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 3 is characterized in that: The first through hole includes a first cylindrical through hole and a second cylindrical through hole whose diameters decrease sequentially from bottom to top and are coaxial. The diameter of the second cylindrical portion is smaller than the diameter of the second cylindrical through hole, so that the second cylindrical portion can be ejected.

5. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1, characterized in that: The transmission assembly comprises: A transmission nut, the transmission nut being fixed to the second through hole of the support housing by a screw, and a threaded hole for screwing the adjusting screw into is provided in the middle of the transmission nut; An adjusting screw, comprising a first threaded segment, a second threaded segment and a screw head arranged in sequence, wherein the first threaded segment contacts the support assembly during the screwing process to push the support assembly out; the second threaded segment is threadedly connected to the threaded hole of the transmission nut.

6. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1, characterized in that: The support shell is provided with a second limit pin assembly hole, and the limit pins are sequentially inserted into the second limit pin assembly holes to complete the limiting of the adjustment shaft and the transmission assembly.

7. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1, characterized in that: The support shell is provided with assembly planes at port positions at both ends of the second through hole.

8. The high-precision adjustable lifting support device for eliminating clamping deformation according to claim 1, characterized in that: The adjustable lifting support device further comprises a clamping seat, which is fixedly arranged at either end of the support shell, and a quick clamping notch is arranged on the side surface of the clamping seat.

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