An overhanging ear adjustable support frame

Abstract

The utility model relates to the field of machining, concretely relates to a kind of adjustable support frame of overhanging lug, including base, telescopic mechanism and support plate;Base:the base includes bottom plate, riser and top plate, the bottom plate, riser and top plate are sequentially connected to form stair shape;Telescopic mechanism: it is set on the top plate, can lengthen or shorten;Support plate:the support plate is set on the top of telescopic mechanism, the support plate is compatible with the shape of the sunken area of workpiece upper lug, the telescopic mechanism can drive the support plate to move up and down.By adjustable telescopic mechanism and the support plate compatible with the shape of the sunken area of lug, the rigid support to overhanging lug can be realized, effectively inhibit the elastic deformation and vibration in processing process, avoid vibration mark and the phenomenon of being stuck with knife, can guarantee processing precision index, satisfy high-precision assembly requirement, still can allow operator to use higher cutting parameter, improve processing efficiency and enhance the security of processing process.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to an adjustable support frame for cantilever lugs. Background Technology

[0002] In manufacturing industries such as aerospace, automotive, and heavy machinery, it is common to encounter situations where localized machining is required on workpieces with relatively positioned lugs. These lugs are typically plate-like structures with through holes for subsequent pin connections or bolt fixation.

[0003] like Figure 1 As shown, the workpiece has two lugs facing each other. In actual processing, the operator usually places the workpiece on the side of the worktable, so that one of the lugs (lower lug) is in direct contact with and fixed to the worktable surface, so that the other lug (upper lug) located above can be machined by drilling, milling, tapping and other machining operations.

[0004] However, in this clamping method, the upper lug is suspended in the air, and the root area where it connects to the workpiece body is the weakest point of the entire structure. During machining, external forces such as cutting forces and vibrations will directly act on the lug of this cantilever structure, easily leading to a series of problems: 1. Machining deformation and vibration: Due to the lack of effective support, the lugs will undergo elastic deformation and severe vibration under the action of the cutting tool. This not only affects the quality of the machined surface (such as producing vibration marks), making it difficult to guarantee dimensional accuracy and geometric tolerances, but may also cause phenomena such as "tool puncture" in severe cases, resulting in tool damage or even scrapping of the workpiece.

[0005] 2. Difficulty in guaranteeing machining accuracy: For ear holes that require high-precision fitting, the aforementioned deformation and vibration will directly cause key indicators such as hole position, roundness, and surface finish to exceed tolerances, failing to meet the assembly and use requirements of the product.

[0006] 3. Inefficiency and safety issues: To avoid the above problems, operators are sometimes forced to reduce cutting parameters (such as feed rate and depth of cut), which significantly reduces machining efficiency. In addition, the unstable machining process also poses potential safety hazards.

[0007] Therefore, there is an urgent need in the field for a dedicated support device for such ear piece processing conditions, which can quickly, accurately and reliably extend to the underside of the suspended ear piece to provide rigid support, so as to effectively suppress processing deformation and vibration and ensure processing accuracy and efficiency. Utility Model Content

[0008] The purpose of this invention is to overcome the problems of deformation, vibration, and low efficiency in the processing of suspended lugs due to the lack of effective support in the prior art, and to provide an adjustable support frame for suspended lugs.

[0009] This utility model provides an adjustable support frame for cantilever lugs, including a base, a telescopic mechanism and a support plate; Base: The base includes a bottom plate, a vertical plate and a top plate, which are connected in sequence to form a staircase shape; Telescopic mechanism: installed on the top plate, capable of extending or retracting; Support plate: The support plate is disposed on the top of the telescopic mechanism. The shape of the support plate is adapted to the recessed area of ​​the upper ear piece of the workpiece. The telescopic mechanism can drive the support plate to move up and down.

[0010] This utility model discloses an adjustable support frame for cantilever lugs. The support frame, with its stair-shaped base structure, can be stably placed on a machine tool worktable and spans the fixed lower lug or workpiece body. This allows the top telescopic mechanism to precisely extend into the lower part of the upper cantilever lug. Driven by the telescopic mechanism, the support plate can be finely adjusted until it is tightly fitted to the bottom surface of the cantilever lug, providing precise and reliable rigid support. This significantly absorbs and counteracts cutting forces and vibrations during machining, fundamentally preventing lug deformation and vibration, thereby ensuring the dimensional accuracy, geometric tolerances, and surface finish of the machined holes. Simultaneously, it allows for higher cutting parameters, greatly improving machining efficiency and safety.

[0011] Preferably, the base plate is provided with a plurality of connecting holes, and the connecting holes are equipped with connecting bolts.

[0012] The entire support frame can be firmly fixed to the specific threaded holes on the worktable by connecting bolts, preventing the support frame from shifting due to vibration during processing and ensuring the long-term stability and reliability of the support.

[0013] Preferably, the base plate is provided with a plurality of positioning holes, and the positioning holes are equipped with positioning pins.

[0014] By inserting the positioning pin into the positioning hole of the base plate and the preset positioning hole of the worktable, the support frame can be quickly and accurately positioned initially. This design separates the functions of "positioning" and "clamping". The relative movement between the support frame and the worktable can be eliminated before tightening the connecting bolts, ensuring the consistency of the support frame's installation position each time. This provides highly repeatable and precise support for the cantilever lugs, making it particularly suitable for batch processing.

[0015] Preferably, the telescopic mechanism includes a support rod, and the top plate is provided with a first threaded hole for mounting the support rod.

[0016] It uses threaded drive to achieve telescopic movement, has a simple and reliable structure, has a self-locking function, can be locked at any position, has high adjustment accuracy and low manufacturing cost.

[0017] Preferably, the lower part of the support rod is provided with a stud that is adapted to the first threaded hole, and a locking nut is fitted on the stud, which is used to abut against the upper surface of the top plate.

[0018] After the locking nut is locked to the surface of the top plate, it can effectively prevent the support rod from loosening and rotating when subjected to vibration, further enhancing the positional stability of the telescopic mechanism under stress and ensuring the rigidity of the support.

[0019] Preferably, the upper part of the support rod is provided with a first connecting post, the support plate is provided with a first mounting hole adapted to the first connecting post, the diameter of the first connecting post is smaller than the diameter of the support rod body, and a first step is formed between the first connecting post and the support rod body.

[0020] After the first connecting post is inserted into the first mounting hole, the first step can limit the support plate, thus fixing the support plate. The installation and disassembly methods are simple and can improve operating efficiency.

[0021] Preferably, the support rod has two clamping surfaces, which are located on opposite sides of the support rod.

[0022] The clamping surface design makes it easy to use tools such as wrenches to clamp the support rod, making it easier and more precise to adjust the height by rotation, which greatly facilitates the operator's fine-tuning work.

[0023] Preferably, the telescopic mechanism further includes two guide rods, which are used to guide the support plate to move up and down, and the two guide rods are respectively disposed on both sides of the support rod.

[0024] The guide rod forms a stable guide frame, which can effectively prevent the support plate from shifting horizontally or rotating around the support rod during the lifting process, ensuring that the support plate always maintains parallel contact with the bottom surface of the lug, thus improving the accuracy and stability of the support.

[0025] Preferably, the lower part of the guide rod is detachably connected to the top plate.

[0026] Detachable connections (such as threaded connections) facilitate the installation and removal of the support plate, and also make the maintenance, transportation and storage of the entire device easier.

[0027] Preferably, the guide rod has a second connecting post at its upper part, the support plate has a second mounting hole adapted to the second connecting post, the diameter of the second connecting post is smaller than the diameter of the guide rod, and a second step is formed between the second connecting post and the guide rod.

[0028] The second step acts as a limiter for the support plate, restricting its maximum downward movement and ensuring that the support plate is in the correct initial plane after installation, reducing subsequent adjustment steps and improving clamping efficiency.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides an adjustable support frame for cantilever lugs. Through an adjustable telescopic mechanism and a support plate adapted to the shape of the lug's recessed area, it can achieve rigid support for the cantilever lugs, effectively suppressing elastic deformation and vibration during processing, avoiding vibration marks and tool marks, ensuring processing accuracy indicators, meeting high-precision assembly requirements, and allowing operators to use higher cutting parameters (such as feed rate and depth of cut), improving processing efficiency and enhancing the safety of the processing process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the workpiece to be processed; Figure 2 This is a schematic diagram of the structure of an adjustable support frame for cantilever lugs according to this utility model; Figure 3 This is a schematic diagram showing the connection relationship between the base and the telescopic mechanism described in this utility model; Figure 4 This is a schematic diagram of the structure of the base described in this utility model; Figure 5 This is a diagram showing the usage state of an adjustable support frame for cantilevered lugs according to this utility model; Marked in the image: 1-Base, 11-Base plate, 111-Connecting hole, 12-Vertical plate, 13-Top plate, 131-First threaded hole, 132-Second threaded hole, 2-Telescopic mechanism, 21-Support rod, 211-Stud, 212-First connecting post, 213-Clamping surface, 22-Guide rod, 221-Second connecting post, 3-Support plate, 31-First mounting hole, 32-Second mounting hole, 4-Connecting bolt, 5-Positioning pin, 6-Locking nut, 7-Workpiece, 71-Upper lug, 72-Lower lug, 73-Recessed area. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0032] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0034] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0035] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0036] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0037] Example 1 like Figure 2 and Figure 4 As shown, an adjustable support frame for cantilever lugs includes a base 1, a telescopic mechanism 2, and a support plate 3. Base 1: The base 1 includes a base plate 11, a vertical plate 12 and a top plate 13, which are connected in sequence to form a staircase shape; Telescopic mechanism 2: installed on the top plate 13, capable of extending or shortening; Support plate 3: The support plate 3 is disposed on the top of the telescopic mechanism 2. The shape of the support plate 3 is adapted to the recessed area 73 of the upper ear piece 71 of the workpiece 7. The telescopic mechanism 2 can drive the support plate 3 to move up and down.

[0038] In one or more implementations, such as Figure 2 As shown, several connecting holes 111 and several positioning holes can be provided on the base plate 11. Each connecting hole 111 is equipped with a connecting bolt 4, and each positioning hole is equipped with a positioning pin 5. The base plate 11 is positioned on the worktable by the positioning pin 5, and the base plate 11 is pressed on the worktable by the connecting bolt 4. This realizes the separation of the "positioning" and "pressing" functions. The relative movement between the support frame and the worktable can be eliminated before tightening the connecting bolt 4, ensuring the consistency of the support frame's installation position each time. This provides highly repeatable and precise support for the cantilever lugs, which is particularly suitable for batch processing.

[0039] In one or more implementations, such as Figure 2 and Figure 3 As shown, the telescopic mechanism 2 may include a support rod 21, with a stud 211 at the lower part of the support rod 21. The support rod 21 is connected to the first screw hole on the top plate 13 through the stud 211 at the lower part, and can be locked at any height.

[0040] In optional implementations, such as Figure 2 As shown, a locking nut 6 can be fitted onto the stud 211. After the locking nut 6 is locked to the surface of the top plate 13, it can effectively prevent the support rod 21 from loosening and rotating when subjected to vibration, further enhancing the positional stability of the telescopic mechanism 2 under stress and ensuring the rigidity of the support.

[0041] In one or more implementations, such as Figure 2 and Figure 3As shown, a first connecting post 212 can be provided on the upper part of the support rod 21. The support plate 3 is provided with a first mounting hole 31 that is adapted to the connecting post. The diameter of the first connecting post 212 is smaller than the diameter of the main body of the support rod 21. A first step is formed between the first connecting post 212 and the main body of the support rod 21. After the first connecting post 212 is inserted into the first mounting hole 31, the first step can limit the support plate 3, thereby fixing the support plate 3. The installation and disassembly methods are simple and can improve the operating efficiency.

[0042] In optional implementations, such as Figure 2 As shown, two clamping surfaces 213 can be provided on the support rod 21. The two clamping surfaces 213 are respectively located on opposite sides of the support rod 21, which makes it easier to use tools such as wrenches to clamp the support rod 21, making it easier and more precise to adjust the height by rotation, and greatly facilitating the operator's fine-tuning work.

[0043] In optional implementations, such as Figure 2 and Figure 3 As shown, the telescopic mechanism 2 may also include two guide rods 22, which are used to guide the support plate 3 to move up and down. The two guide rods 22 are respectively arranged on both sides of the support rod 21. The guide rods 22 form a stable guide frame, which can effectively prevent the support plate 3 from shifting horizontally or rotating around the support rod 21 during the lifting process, ensuring that the support plate 3 always maintains parallel contact with the bottom surface of the ear piece, thus improving the accuracy and stability of the support.

[0044] In optional implementations, such as Figure 3 and Figure 4 As shown, the lower part of the guide rod 22 can be detachably connected to the top plate 13, which facilitates the installation and disassembly of the support plate 3, and also facilitates the maintenance, transportation and storage of the entire device.

[0045] In optional implementations, such as Figure 3 and Figure 4 As shown, second threaded holes 132 can be provided on both sides of the top plate 13, and the lower part of the guide rod 22 is threaded into the second threaded holes.

[0046] In optional implementations, such as Figure 2 and Figure 3 As shown, a second connecting post 221 can be provided on the upper part of the guide rod 22. The support plate 3 is provided with a second mounting hole 32 that is adapted to the second connecting post 221. The diameter of the second connecting post 221 is smaller than the diameter of the guide rod 22. A second step is formed between the second connecting post 221 and the guide rod 22. The second step plays a limiting role on the support plate 3, limiting the maximum distance of the support plate 3 to move downward, ensuring that the support plate 3 is in the correct initial plane after installation, reducing subsequent adjustment steps and improving clamping efficiency.

[0047] The adjustable support frame for the cantilever lug of this embodiment provides rigid support for the upper lug 71 of the workpiece 7, including the following steps: S1: Preparation and initial positioning; Place the workpiece 7 on its side and fix it on the machine tool worktable so that the lower lug 72 of the workpiece 7 contacts and presses against the worktable surface, while the upper lug 71 is in a suspended state. Clean the lower surface of the base plate 11 of the support frame and the corresponding area of ​​the machine tool worktable. Place the base 1 of the support frame across the fixed lower lug 72 or the workpiece 7 body on the worktable, so that the positioning hole on the base plate 11 is aligned with the preset positioning pin 5 hole on the worktable. Pass the positioning pin 5 through the positioning hole of the base plate 11 and insert it into the positioning pin hole of the worktable to complete the rapid and accurate initial positioning of the support frame. S2: Fixed support frame; Pass the connecting bolt 4 through the connecting hole 111 on the base plate 11 and screw it into the threaded hole of the worktable; Use tools to tighten each connecting bolt 4 in sequence to firmly press the base 1 onto the machine tool worktable to prevent the support frame from loosening during processing; S3: Install and coarsely adjust support plate 3; Align the first mounting hole 31 and the second mounting hole 32 on the support plate 3 with the first connecting post 212 on the upper part of the support rod 21 and the second connecting post 221 on the upper part of the guide rod 22, respectively. Place the support plate 3 downward along the guide rod 22 until it is limited by the first step and the second step, thus completing the installation of the support plate 3; S4: Fine-tune support height; Use a wrench or other tools to clamp the clamping surface 213 on the support rod 21 and slowly rotate the support rod 21. The support rod 21 engages with the first threaded hole 131 on the top plate 13 via the stud 211 at its lower part, thereby generating axial movement and lifting or lowering the support plate 3. Observe the upper surface of the support plate 3 gradually approaching the recessed area 73 at the bottom of the upper ear piece 71 until the support plate 3 and the surface of the recessed area 73 are completely and tightly attached, providing uniform rigid support for the upper ear piece 71. S5: Locking and Confirmation; After the support height is adjusted to the correct position, tighten the locking nut 6 on the support rod 21 so that it fits tightly against the upper end face of the top plate 13, locking the support rod 21 to prevent it from loosening and rotating during processing vibration. We reconfirmed that the support plate 3 was in good contact with the ear piece and that the entire support frame system was stable and error-free. S6: Perform processing; After confirming that the support is reliable, the machine tool can be started to perform machining operations such as drilling, milling, and tapping on the upper lug 71 of the workpiece 7. During processing, the support frame can effectively suppress the deformation and vibration of the lugs caused by cutting forces; S7: Disassembly and cleaning; After processing, loosen the locking nut 6, rotate the support rod 21 in the opposite direction, so that the support plate 3 drops a certain distance and disengages from the upper ear piece 71; Loosen and remove connecting bolt 4 and locating pin 5, and remove the entire support frame from the workbench; Finally, workpiece 7 is removed from the worktable, completing the entire processing procedure.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable support frame for cantilever lugs, characterized in that, It includes a base (1), a telescopic mechanism (2), and a support plate (3); Base (1): The base (1) includes a bottom plate (11), a vertical plate (12) and a top plate (13), which are connected in sequence to form a staircase shape; Telescopic mechanism (2): installed on the top plate (13), capable of extending or shortening; Support plate (3): The support plate (3) is located on the top of the telescopic mechanism (2). The shape of the support plate (3) is adapted to the recessed area (73) of the upper ear piece (71) of the workpiece (7). The telescopic mechanism (2) can drive the support plate (3) to move up and down.

2. The adjustable support frame for cantilevered lugs according to claim 1, characterized in that, The base plate (11) is provided with a plurality of connecting holes (111), and the connecting holes (111) are equipped with connecting bolts (4).

3. The adjustable support frame for cantilevered lugs according to claim 2, characterized in that, The base plate (11) is provided with a number of positioning holes, and the positioning holes are equipped with positioning pins (5).

4. The adjustable support frame for cantilever lugs according to claim 1, characterized in that, The telescopic mechanism (2) includes a support rod (21), and the top plate (13) is provided with a first threaded hole (131) for mounting the support rod (21).

5. The adjustable support frame for cantilever lugs according to claim 4, characterized in that, The lower part of the support rod (21) is provided with a stud (211) that is adapted to the first threaded hole (131). A locking nut (6) is fitted on the stud (211) and the locking nut (6) is used to abut against the upper surface of the top plate (13).

6. The adjustable support frame for cantilever lugs according to claim 4, characterized in that, The upper part of the support rod (21) is provided with a first connecting post (212), and the support plate (3) is provided with a first mounting hole (31) adapted to the first connecting post (212). The diameter of the first connecting post (212) is smaller than the diameter of the main body of the support rod (21), and a first step is formed between the first connecting post (212) and the main body of the support rod (21).

7. The adjustable support frame for cantilever lugs according to claim 4, characterized in that, The support rod (21) has two clamping surfaces (213), which are located on opposite sides of the support rod (21).

8. The adjustable support frame for cantilever lugs according to claim 4, characterized in that, The telescopic mechanism (2) also includes two guide rods (22), which are used to guide the support plate (3) to move up and down. The two guide rods (22) are respectively located on both sides of the support rod (21).

9. The adjustable support frame for cantilever lugs according to claim 8, characterized in that, The lower part of the guide rod (22) is detachably connected to the top plate (13).

10. The adjustable support frame for cantilever lugs according to claim 8, characterized in that, The guide rod (22) is provided with a second connecting post (221) on its upper part. The support plate (3) is provided with a second mounting hole (32) that is adapted to the second connecting post (221). The diameter of the second connecting post (221) is smaller than the diameter of the guide rod (22). A second step is formed between the second connecting post (221) and the guide rod (22).

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