A fixture assembly for flight handle machining

Abstract

The application relates to the technical field of handle processing, in particular to a clamp assembly for processing of a flight handle, which comprises a plurality of bases, a loading part, a first clamping mechanism for fixing a workpiece in the loading part, a second clamping mechanism for fixing the loading part in the base, the loading part is provided with a plurality of first positioning holes for positioning the relative position of the handle and the loading part, the first clamping mechanism is provided with a positioning part A, the base is provided with a positioning part B, the positioning part A and the positioning part B are coupled to determine the relative angle and position between the loading part and the base, and the base is provided with a mounting surface for mounting the loading part. The handle is first fixed in the loading part through the first clamping mechanism, so that the clamping frequency during handle processing is greatly reduced; meanwhile, the position of the handle is determined through the relative position of the loading part and the base, the structure limitation of the handle can be avoided, and a larger design space is provided for the positioning structure and the clamping mechanism.

Description

Technical Field

[0001] This invention relates to the field of handle processing technology, and in particular to a fixture assembly for processing flight handles. Background Technology

[0002] The flight handle, or the grip portion of the aircraft's control stick, employs a curved design to accommodate the human hand's grip. This handle is made of aluminum alloy using a casting process. However, due to the limitations of the casting process, achieving precise accuracy is difficult. Typically, a single handle shell requires the assembly of multiple parts. Therefore, the mating surfaces between these parts must be further milled to meet the required precision. It's important to note that the multiple mating surfaces of a single part often face different directions. Conventional machining equipment cannot simultaneously machine multiple mating surfaces when the part is in a single, fixed position. This means that during the machining of different mating surfaces, the part's angle must be adjusted, and the clamping process must be repeated.

[0003] For such irregular parts, the clamping process requires a high level of skill from the fitter. In addition, each part needs to be clamped multiple times, which is time-consuming and labor-intensive. As the frequency of clamping increases, the risk of operational errors rises sharply. Once an error occurs, it is very easy to cause the machining accuracy to be substandard, ultimately resulting in the scrapping of the part.

[0004] In summary, the manufacturing process for flight controllers should focus on minimizing the number of clamping operations and reducing the difficulty of clamping. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides a fixture assembly for machining flight handles, comprising: multiple bases and a loading section;

[0006] The loading section is provided with a first clamping mechanism and a second clamping mechanism;

[0007] The first clamping mechanism is used to fix the workpiece in the loading part;

[0008] The second clamping mechanism is used to fix the loading part in the base;

[0009] The loading part has a plurality of first positioning holes, which are coaxial with the positioning holes of the workpiece itself, so as to position the relative position of the handle and the loading part.

[0010] The first clamping mechanism has a positioning part A; the base has a positioning part B; the positioning part A and the positioning part B are coupled to determine the relative angle and position between the loading part and the base;

[0011] The base has a mounting surface through which the loading part is mounted. The mounting surface forms an angle α with the horizontal plane. The angle α formed between the mounting surface and the horizontal plane is different for different bases.

[0012] The loading section has a double-layer structure, with the upper layer being a loading platform and the lower layer being a fixed platform. The loading platform and the fixed platform are slidably connected along the axial direction of the loading section.

[0013] The second clamping mechanism includes a transmission screw, which is rotatably connected to the fixed platform;

[0014] The second clamping block is threadedly connected to the transmission screw and slides along the second clamping direction;

[0015] The second clamping direction is parallel to the axis of the transmission screw;

[0016] The transmission screw has two sections of threads with different directions of rotation; the second clamping block has two sections, located in the two sections of threads respectively.

[0017] The positioning part A is disposed in the second clamping block at one end of the mounting surface;

[0018] The positioning part B is provided in multiple sets at the edge of the mounting surface, and each set of positioning parts B has two parts; the positioning part A and / or the positioning part B are coupled through a V-shaped structure, and the line connecting the vertices of the V-shaped grooves in the coupled set of positioning parts B is parallel to the second clamping direction.

[0019] The first positioning hole is located in the loading platform;

[0020] The first clamping mechanism includes: a first clamping block located above the loading platform; a connecting shaft, one end of which is fixedly connected to the first clamping block and the other end of which is fixedly connected to the fixed platform, and the loading platform is slidably connected to the connecting shaft;

[0021] A lifting component is provided between the loading platform and the fixed platform to drive the loading platform to move along a first clamping direction, which is the direction in which the loading platform faces the first clamping block.

[0022] Furthermore, the loading platform is provided with a sliding groove A at its bottom, and the fixed platform is provided with a sliding groove B. The sliding groove A and the sliding groove B are combined to form a sliding channel, and the length direction of the sliding channel is parallel to the second clamping direction.

[0023] The second clamping block pushes the lifting component to slide along the sliding channel;

[0024] When the loading platform and the fixed platform are in contact, the minimum height of the sliding channel is L1, and the minimum height of the lifting component is L2; ​​L1≤L2;

[0025] The front end of the slide A is provided with a first inclined surface, and the lifting component abuts against the first inclined surface. The first inclined surface converts the force parallel to the second clamping direction into a force parallel to the first clamping direction.

[0026] Furthermore, the chute A includes an inclined path and a parallel path along the length of the sliding channel, and the inclined path is a path with a first inclined surface.

[0027] The paths from the end of the inclined path to the end of the slide A are all parallel paths; the plane at the position of the parallel path is parallel to the length direction of the sliding channel;

[0028] The projected length of the inclined path toward the top surface of the loading platform is L3; the projected length of the parallel path toward the top surface of the loading platform is L4.

[0029] L3 <L4。

[0030] Furthermore, the lifting component is connected to the second clamping block, and the second clamping block pushes the lifting component to move along the sliding channel.

[0031] Furthermore, the lifting component is provided with a connecting threaded hole;

[0032] The second clamping block is provided with a connecting through hole, and a connecting bolt is provided in the connecting through hole;

[0033] The lifting component retracts only when the connecting bolt is connected to the connecting threaded hole, following the second clamping block.

[0034] The retraction refers to the movement in the opposite direction to the second clamping direction.

[0035] Furthermore, the lifting component is integrally connected to the second clamping block. When the lifting component is disengaged from the inclined path, the second clamping block must continue to move at least L5 lengths to clamp the mounting surface.

[0036] The second clamping block has a feedback protrusion;

[0037] The fixed platform is equipped with a backstop swing arm;

[0038] When the second clamping block moves toward the second clamping direction, the anti-reverse swing arm avoids the feedback protrusion;

[0039] When the second clamping block moves a distance L6 in the opposite direction to the second clamping direction, the anti-reverse swing arm blocks the feedback protrusion; L6 <L5。

[0040] Furthermore, the mounting surface is circular.

[0041] The beneficial effects of this invention are reflected in the fact that the complex handle is first fixed to the loading part by the first clamping mechanism, at which point the loading part and the handle are relatively fixed. Then, the loading part is fixed in the base by the second clamping mechanism. During this process, there is no need to release the first clamping mechanism from the workpiece, which greatly reduces the number of clamping operations during handle processing. At the same time, the position of the handle is determined by the relative position of the loading part and the base, which can avoid the structural limitations of the handle and provide more design space for the positioning structure and clamping mechanism, making it easier to switch work positions for the handle. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural diagram of the clamp assembly provided by the present invention;

[0043] Figure 2 This is a front view of the clamp assembly provided by the present invention.

[0044] Figure 3 This is a side view of the clamp assembly provided by the present invention.

[0045] Figure 4 A side view of the clamping assembly for different bases;

[0046] Figure 5 This is a cross-sectional structural diagram of the clamp assembly provided by the present invention;

[0047] Figure 6 A cross-sectional structural schematic diagram of a lifting component provided by the present invention;

[0048] Figure 7 A cross-sectional structural schematic diagram of another form of lifting component provided by the present invention;

[0049] Figure 8 A three-dimensional structural diagram of the loading part provided by the present invention;

[0050] Figure 9 This is an exploded three-dimensional structural diagram of the loading section provided by the present invention;

[0051] Figure 10 This is a cross-sectional view of the loading platform provided by the present invention.

[0052] Reference numerals: 1, base; 11, mounting surface; 111, positioning part B;

[0053] 2. Loading section; 21. Loading platform; 211. Slide A; 2111. First inclined surface; 212. Positioning hole; 22. Fixed platform; 221. Slide B;

[0054] 3. First clamping mechanism; 31. First clamping block; 32. Connecting shaft;

[0055] 4. Second clamping mechanism; 41. Transmission screw; 42. Second clamping block; 421. Positioning part A;

[0056] 5. Lifting component; 51. Connecting threaded hole; 52. Connecting bolt;

[0057] 61. Feedback protrusion; 62. Anti-reverse swing arm;

[0058] 7. Handle; 71. Machined surface. Detailed Implementation

[0059] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1

[0061] Reference Figures 1-10 .

[0062] A jig for machining flight handles includes multiple bases 1 and a loading section 2;

[0063] The loading part 2 is provided with a first clamping mechanism 3 and a second clamping mechanism 4;

[0064] The first clamping mechanism 3 is used to fix the workpiece in the loading part 2;

[0065] The second clamping mechanism 4 is used to fix the loading part 2 in the base 1;

[0066] The first clamping mechanism 3 has a plurality of first positioning holes 212, which are coaxial with the positioning holes 212 of the handle 7 itself, so as to position the relative position of the handle 7 and the loading part 2.

[0067] The loading part 2 also has a positioning part A421; the base 1 has a positioning part B111; the positioning part A421 and the positioning part B111 are coupled to determine the relative angle and position between the loading part 2 and the base 1;

[0068] The loading part 2 is coupled with different bases 1. The base 1 has a mounting surface 11, through which the loading part 2 is mounted. The mounting surface 11 forms an angle α with the horizontal plane. The angle α formed by the mounting surface 11 with the horizontal plane is different for different bases 1.

[0069] In the prior art, to process different mating surfaces of the handle 7, the handle 7 needs to be installed in bases 1 at different angles. Base 1 has a mounting surface 11, which forms an angle α with the horizontal plane. Angle α includes 0°, meaning the mounting surface is parallel to the horizontal plane. The angle α formed by the mounting surfaces 11 of different bases 1 is different. When the handle 7 is installed on mounting surfaces 11 at different angles, the angle between the handle 7 and the cutting tool is different, allowing the cutting tool to process different machining surfaces 71 on the handle 7. However, the handle 7 has a complex structure, and simply changing the pitch angle of the mounting surface 11 is insufficient to process all machining surfaces 71 of the handle 7. Therefore, the handle 7 also needs to rotate within the mounting surface 11. Each time a surface of the handle 7 is processed, the handle 7 is in a fixed state, requiring the fixture to loosen the handle 7, adjust its position, and then re-clamp it. In other words, the handle 7 needs to be re-clamped after processing each surface (the left and right handles 7 processed in this application each have four machining surfaces 71 requiring the above position adjustment operation). The handle 7 is made of thin-walled aluminum alloy, which is relatively fragile and easily deformed under stress. Therefore, the work of clamping the handle 7 requires certain technical skills, and errors are inevitable after repeated clamping.

[0070] This embodiment provides a clamp with a loading part 2. The handle 7 is first fixed in the loading part 2, and then the loading part 2 with the handle 7 is fixed to the base 1. The handle 7 needs to take into account the overall grip feel of the product and the installation position of the buttons, so the shape of the handle 7 cannot be changed. In addition, the handle 7 is a thin-walled aluminum alloy part with weak structural strength. Therefore, extra attention needs to be paid to the force on the handle 7 each time it is clamped to avoid excessive clamping force causing deformation of the handle 7, or insufficient clamping force causing displacement of the handle 7 due to vibration during processing.

[0071] The handle 7 is fixed to the loading part 2 by the first clamping mechanism 3, and then the loading part 2 is connected to different bases 1 (or connected to the same base 1 in different directions) by the second clamping mechanism 4. As part of the fixture, the loading part 2 can easily be made stronger than the handle 7, so the loading part 2 can withstand greater clamping force without deformation, reducing the installation difficulty of changing the position of the handle 7, and the handle 7 only needs to be clamped once during the processing of the handle 7.

[0072] The handle 7 itself has positioning holes, specifically the connection holes (at least two connection holes) for connecting the left and right halves of the handle housing. Positioning is achieved by having the positioning pin pass through both the first positioning hole 212 and the connection hole of the loading part 2. Similar to the prior art, the positioning method between the handle 7 and the base 1 is the same; however, in this application, the handle 7 only needs to be positioned once, eliminating the need for positioning operations when changing positions.

[0073] The loading unit 2 is equipped with a positioning part A421, and the base 1 is equipped with a positioning part B111. The positioning parts A421 and B111 enable rapid positioning between the loading unit 2 and the base 1, which determines the position the handle 7 should be in when processing different wall surfaces. Since the positioning parts A421 and B111 are completely detached from the handle 7 and are not limited by the thin-walled structure and grip requirements of the handle 7, their placement in the loading unit 2 and base 1 allows for greater design flexibility.

[0074] Example 2

[0075] Reference Figures 1-9 .

[0076] The loading section 2 has a double-layer structure, with the upper layer being a loading platform 21 and the lower layer being a fixed platform 22. The loading platform 21 and the fixed platform 22 are slidably connected along the axial direction of the loading section 2.

[0077] The second clamping mechanism 4 includes: a transmission screw 41, which is rotatably connected to the fixed platform 22; and a second clamping block 42, which is threadedly connected to the transmission screw 41 and slides along the second clamping direction.

[0078] The second clamping direction is parallel to the axis of the transmission screw 41;

[0079] The transmission screw 41 has two sections of threads with different directions of rotation; there are two second clamping blocks 42, which are located in the two sections of threads respectively.

[0080] The loading section 2 is configured as a double-layer structure, wherein the handle 7 is mounted on the loading platform 21, and the lower fixed platform 22 is fixedly connected to the base 1. The loading platform 21 and the fixed platform 22 are slidably connected along the axial direction of the loading section 2, and the loading platform 21 can gradually move away from the fixed platform 22.

[0081] The fixed platform 22 is connected to the base 1 by the second clamping mechanism 4. The second clamping mechanism 4 specifically includes: a transmission screw 41, which is rotatably disposed on the fixed platform 22; and a second clamping block 42, which is threadedly connected to the second clamping block 42 and slides along the second clamping direction. The second clamping block 42 is slidably connected to the fixed platform 22 along the second clamping direction to prevent the transmission screw 41 from driving the second clamping block 42 to rotate.

[0082] At least two second clamping blocks 42 are provided. The transmission screw 41 is divided into two sections along its length, and the two sections have threads with different directions. The two second clamping blocks 42 are respectively connected to the two sections of threads. When the transmission screw 41 is rotated, the two second clamping blocks 42 move towards the center at the same time, that is, clamp the mounting surface 11 located between the two second clamping blocks 42.

[0083] Furthermore, the positioning part A421 is disposed at one end of the second clamping block 42 that clamps the mounting surface 11; multiple sets of positioning parts B111 are disposed at the edge of the mounting surface 11, and each set of positioning parts B111 has two; the positioning parts A421 and / or the positioning parts B111 are coupled through a V-shaped structure, and the line connecting the vertices of the V-shaped structure in the coupled set of positioning parts B111 is parallel to the second clamping direction.

[0084] The V-shaped structure specifically refers to a V-shaped groove. Either the positioning part A421 or the positioning part B111 can be configured as a V-shaped groove. For example, if the positioning part B111 is configured as a V-shaped groove, the positioning part A421 can be configured as a symmetrical structure such as a V-shaped protrusion, a sphere, or a cylinder. The axis of symmetry of the positioning part A421 is parallel to the second clamping direction. When the line connecting the vertices of the V-shaped groove is not parallel to the second clamping direction, only one side wall of the positioning part A421 along its own axis of symmetry will abut against the wall of the V-shaped groove. At this point, the forces are unbalanced, and the loading part 2 will rotate until both sides of the positioning part A421 along its axis of symmetry simultaneously abut against both sides of the V-shaped groove, achieving force balance. At this point, the second clamping direction is parallel to the line connecting the vertices of the V-shaped grooves in a set of positioning parts B111, thus limiting the installation angle of the loading part 2 and the handle 7.

[0085] In other words, in this embodiment, the process of clamping the base 1 by the second clamping mechanism 4 not only fixes the base 1 and the fixed platform 22, but also positions the installation angle of the handle 7. The operator only needs to align the positioning part A421 and the positioning part B111. Then, rotating the transmission screw 41 will make the positioning part A421 and the positioning part B111 completely aligned, saving a series of positioning work such as aligning the positioning hole 212 and inserting the positioning pin. The operator only needs to roughly align the positioning part A421 and the positioning part B111. The larger the opening of the V-groove, the greater the allowable alignment error, and the easier the positioning.

[0086] Example 3

[0087] Reference Figures 5-9 .

[0088] The first positioning hole 212 is located in the loading platform 21;

[0089] The first clamping mechanism 3 includes: a first clamping block 31, located above the loading platform 21; a connecting shaft 32, one end of which is fixedly connected to the first clamping block 31, and the other end of which is fixedly connected to the fixed platform 22, and the loading platform 21 is slidably connected to the connecting shaft 32;

[0090] A lifting component 5 is provided between the loading platform 21 and the fixed platform 22 for lifting the loading platform 21 to clamp the handle 7.

[0091] The handle 7 is positioned at an angle relative to the loading platform 21 by the first positioning hole 212. The handle is then fixed in the loading platform 21 by the first clamping mechanism 3. At this point, the handle 7 and the loading part 2 are integrated. The angle between the handle 7 and the base 1 can be determined by determining the relative angle between the loading part 2 and the base 1.

[0092] The first clamping mechanism 3 specifically includes: a first clamping block 31 and a connecting shaft 32, wherein one end of the connecting shaft 32 is fixedly connected to the fixed platform 22 and the other end is fixedly connected to the second clamping block 42. The connecting shaft 32 passes through the loading platform 21, and the loading platform 21 is slidably connected to the connecting shaft 32. The handle 7 is located above the loading platform 21 and below the first clamping block 31. Lifting the loading platform 21 causes the loading platform 21 and the second clamping block 42 to clamp the handle 7.

[0093] More specifically, two connecting shafts 32 are provided, with the ends of the connecting shafts 32 connected to the mounting bracket. Placing the first clamping block 31 in the mounting bracket allows for better control of the position of the first clamping block 31 and balance of the force on the first clamping block 31. Balancing the force on the first clamping block 31 specifically means that the first clamping block 31 needs to be located directly above the handle 7, but the connecting shaft 32 cannot pass through the handle 7. Therefore, the first clamping block 31 and the connecting shaft 32 will form an L-shape. The first clamping block 31 is only connected to the connecting shaft 32 on one side, and the stress will be concentrated at the connection point between the first clamping block 31 and the connecting shaft 32 (i.e., the corner of the L-shape). This can easily cause the first clamping block 31 to rotate around the connection point, resulting in tilting. Therefore, two connecting shafts 32 are needed to fix both sides of the first clamping block 31 to prevent it from swinging.

[0094] The loading platform 21 is lifted by the lifting component 5. In this embodiment, a simple and feasible lifting component 5 is provided, which can be provided with an abutment position on the back of the loading platform 21. The fixing platform 22 is provided with a threaded hole. The abutment position, the threaded hole, and the first clamping block 31 are located on the same straight line. A bolt is provided in the threaded hole. The bolt pushes the abutment position, thereby lifting the loading platform 21. A bearing can be provided at the abutment position to reduce the frictional force in the rotational direction on the loading platform 21. The mounting surface 11 of the corresponding base 1 should be provided with a hollow to avoid the bolt.

[0095] Example 4

[0096] Reference Figures 5-9 .

[0097] The loading platform 21 is provided with a sliding groove A211 at its bottom, and the fixed platform 22 is provided with a sliding groove B221. The sliding groove A211 and the sliding groove B221 are combined to form a sliding channel, and the length direction of the sliding channel is parallel to the second clamping direction.

[0098] The second clamping block 42 pushes the lifting component 5 to slide along the sliding channel; when the loading platform 21 and the fixed platform 22 are in contact, the minimum height of the sliding channel is L1, and the minimum height of the lifting component 5 is L2; ​​L1≤L2;

[0099] The front end of the slide groove A211 is provided with a first inclined surface 2111, and the lifting component 5 abuts against the first inclined surface 2111. The first inclined surface 2111 converts the force parallel to the second clamping direction into a force parallel to the first clamping direction.

[0100] In Embodiment 3, a simple lifting component 5 structure is provided. This lifting component 5 requires manual clamping by an operator. In the prior art, only the handle 7 needs to be clamped, and the number of clamping operations for the handle 7 is equal to the number of clamping operations for the two loading parts in this application. However, using the lifting structure in the above embodiment adds an extra step of clamping the handle 7, thus complicating the clamping process and contradicting the purpose of this application to simplify the clamping of the handle 7. Furthermore, like the prior art, manual control of the clamping force is required. Although this reduces the number of times the handle 7 needs to be clamped, the clamping force cannot be well controlled during clamping, meaning the clamping difficulty is not reduced.

[0101] This embodiment provides another lifting method and structure of the lifting component 5.

[0102] The sliding channel consists of groove A211 and groove B221. Groove A211 is formed at the bottom of the loading platform 21, meaning the height of the sliding channel is affected by the lifting of the loading platform 21; the greater the lifting distance of the loading platform 21, the higher the height of the sliding channel. The length direction of the sliding channel is parallel to the second clamping direction. Groove A211 is provided with a first inclined surface 2111. As the lifting component 5 extends deeper into the sliding channel along the second clamping direction, since the minimum height L1 of the sliding channel is lower than the minimum height L2 of the lifting component 5, the lifting component 5 will lift the loading platform 21 through the first inclined surface 2111, thereby increasing the height of the sliding channel until the lifting component 5 can squeeze into the sliding channel.

[0103] In this embodiment, the movement mode of the lifting component 5 is changed, so that the lifting component 5 and the second clamping block 42 can be linked together. The steps of fixing the loading part 2 and fixing the handle 7 are combined into one. While rotating the transmission screw 41 drives the second clamping block 42 to move, it also drives the lifting component 5 to move. Therefore, the operator does not need to clamp the handle 7 separately.

[0104] Example 5

[0105] Reference Figure 10 .

[0106] The slide groove A211 includes an inclined path and a parallel path along the length of the sliding channel, and the inclined path is a path provided with a first inclined surface 2111;

[0107] The paths from the end of the inclined path to the end of the slide groove A211 are all parallel paths; the plane at the position of the parallel path is parallel to the length direction of the sliding channel;

[0108] The projected length of the inclined path toward the top surface of the loading platform 21 is L3; the projected length of the parallel path toward the top surface of the loading platform 21 is L4.

[0109] L3 <L4。

[0110] The projected length refers to the length of each path measured along the second clamping direction, which is the distance that the lifting component 5 can move.

[0111] In embodiment 4, the steps of clamping the handle 7 and clamping the base 1 are combined through the linkage design of the second clamping block 42 and the lifting component 5, eliminating the step of clamping the handle 7 separately. However, if the lifting component 5 is always in contact with the first inclined surface 2111, the second clamping block 42 cannot continue to move when it fully clamps the base 1. The lifting component 5 will not be able to bring the loading part 2 closer to the first clamping block 31, which will cause the handle 7 to loosen. Alternatively, the first clamping block 31 may be clamped to the handle 7 in advance, while the second clamping block 42 is not clamped. In this case, the operator can continue to rotate the transmission screw 41. At this time, both the first clamping block 31 and the second clamping block 42 will move. Continuing to increase the pressure between the first clamping block 31 and the handle 7 may cause the handle 7 to deform. The second clamping block 42 and the first clamping block 31 need to complete the clamping action at the same time. Therefore, the structural design in Embodiment 4 requires good control of the ratio between the lifting distance and the moving distance of the second clamping block 42, which places high demands on production and processing. At the same time, after the second clamping mechanism 4 is released from the clamping state, the first clamping mechanism 3 will also be automatically released from the clamping state. At this time, the handle 7 is in a non-fixed state and changing the work position is prone to displacement, which requires repositioning.

[0112] In this embodiment, the slide A211 is further improved. The top surface of the slide A211 (that is, the wall surface that abuts against the lifting component 5) has two paths: an inclined path and a parallel path. The lifting component 5 continuously abuts against the first inclined surface 2111, constantly raising the loading platform 21 until the top of the lifting component 5 no longer abuts against the first inclined surface 2111 and enters the parallel path. The wall surface of the parallel path is parallel to the second clamping direction, and the force component effect of the first inclined surface 2111 is lost. The lifting component 5 can continue to move, but the loading platform 21 will not continue to rise, so the pressure on the handle 7 will not continue to increase. The pressure on the handle 7 at this time is set as a clamping force that can fix the handle 7. That is to say, before the second clamping block 42 clamps the base 1, the lifting component 5 has already entered the parallel path. At this time, the first clamping block 31 has already clamped the handle 7. As the transmission screw 41 continues to rotate, the second clamping block 42 moves to clamp the base 1. At this time, the lifting component 5 will also continue to move, but it will not push the loading platform 21 to continue to rise. Thus, during the entire clamping process, the operator only needs to continuously rotate the transmission screw 41. The structural strength of the second clamping block 42 and the base 1 is much higher than that of the handle 7. Therefore, unless there is very serious over-tightening, it will not cause damage to the parts. At the same time, the lifting component 5 only plays a lifting role in the inclined path. When leaving the inclined path, the first clamping block 31 completes the clamping of the handle 7. After the lifting component 5 enters the horizontal path, the loading platform 21 no longer links with the second clamping block 42. The parallel path provides redundancy for the movement of the second clamping block 42, avoiding excessive force from the first clamping block 31 and the loading platform 21 that could damage the handle 7.

[0113] Furthermore, the lifting component 5 can be directly integrated with the second clamping block 42 into a single structure, which is simple and convenient for production and processing.

[0114] Example 6

[0115] Reference Figure 7 .

[0116] The lifting component 5 is provided with a connecting threaded hole 51; the second clamping block 42 is provided with a connecting through hole, and a connecting bolt 52 is provided in the connecting through hole; the lifting component 5 only moves backward with the second clamping block 42 when the connecting bolt 52 connects to the connecting threaded hole 51; the backward movement is the opposite direction of the second clamping direction.

[0117] If the lifting component 5 is directly fixedly connected to the second clamping block 42, it is indeed possible to achieve the purpose of the second clamping block 42 pushing the lifting component 5, and at the same time, it can drive the lifting component 5 away from the sliding channel. However, the handle 7 has multiple machined surfaces 71, and it is necessary to disconnect the loading part 2 and the base 1 multiple times. When disconnecting the second clamping mechanism 4, we do not want to disconnect the first clamping mechanism 3. After disconnecting the first clamping mechanism 3, the handle 7 is in a non-fixed state and the handle 7 is prone to displacement, so the handle 7 needs to be repositioned.

[0118] This embodiment provides a structure in which the lifting component 5 is connected to the second clamping block 42 only when the loading platform 21 needs to be lifted. Specifically, the lifting component 5 and the second clamping block 42 are separate structures. The lifting component 5 is positioned within a sliding channel, and the second clamping block 42 has a protrusion. The protrusion abuts against and pushes the lifting component 5 into the sliding channel. When the second clamping block 42 moves away, since the protrusion is not connected to the lifting component 5, the lifting component 5 remains within the sliding channel. However, a simple separate structure cannot release the first clamping mechanism 3 to remove the handle 7. Therefore, it is necessary to consider how to remove the lifting component 5. In this embodiment, the lifting component 5 has a threaded connection hole, and the second clamping block 42 has a connecting hole. After machining all the machined surfaces 71 of the handle 7, only a connecting bolt 52 needs to be used to connect the threaded hole 51 through the connecting hole. The connecting bolt 52 transmits the pulling force when removing the lifting component 5, thereby removing the lifting component 5, moving the loading platform 21 away from the first clamping block 31, and releasing the first clamping mechanism 3.

[0119] Example 7

[0120] Reference Figure 6 .

[0121] The lifting component 5 is integrally connected to the second clamping block. When the lifting component 5 is removed from the inclined path, the second clamping block 42 must continue to move at least L5 lengths to clamp the mounting surface 11.

[0122] The second clamping block 42 has a feedback protrusion 61;

[0123] The fixed platform 22 is equipped with a backstop swing arm 62;

[0124] When the second clamping block 42 moves toward the second clamping direction, the anti-reverse swing arm 62 avoids the feedback protrusion 61;

[0125] When the second clamping block 42 moves a distance L5 in the opposite direction of the second clamping direction, the anti-reverse swing arm 62 blocks the feedback protrusion 61; L6 <L5。

[0126] The lifting component 5 is integrally connected with the second clamping block 42, which facilitates production and reduces wear between parts, thereby reducing errors and maintenance costs. However, this will cause the lifting component 5 and the second clamping block 42 to always move synchronously. When the second clamping block 42 releases its grip on the mounting surface 11, the first clamping block 31 will also release its grip on the handle 7. Then, when moving the loading part 2, extra attention needs to be paid to the deviation of the handle 7. Therefore, the operator obviously wants to keep the first clamping block 31 from being released during the process of releasing the second clamping block 42, and finally release the first clamping block 31 and the second clamping block 42 at the same time after the handle 7 is completely processed.

[0127] To prevent the second clamping block 42 from immediately contacting and clamping the mounting surface 11 after the lifting component 5 completes its tilting path movement and raises the loading platform 21 to its maximum height, it is stipulated that the second clamping block 42 must travel an additional predetermined distance L5 in the horizontal direction. This design aims to limit the operator's range of motion in releasing the second clamping block 42, ensuring that the release amplitude does not exceed L5, thereby achieving the goal of releasing the second clamping block 42 independently without affecting the locked state of the first clamping block 31. However, in practical applications, due to reliance on manual operation, there is a risk of exceeding the L5 limit, which could lead to unintentional release of the first clamping block 31's lock. A further problem is that over-rotation of the transmission screw 41 is not easily detected, which may cause the operator to mistakenly believe that the handle 7 remains stable when changing working positions, thus reducing alertness and ultimately leading to a subtle positional shift of the handle 7.

[0128] Furthermore, in this embodiment, a feedback protrusion 61 is provided in the second clamping block 42, and a backstop swing arm 62 is provided in the fixed platform 22. The feedback protrusion 61 and the second clamping block 42 move synchronously. The backstop swing arm 62 only allows the feedback protrusion 61 to pass through the backstop swing arm 62 along the second clamping direction. When the backstop swing arm 62 moves a distance L6 in the opposite direction of the second clamping direction of the second clamping block 42, it blocks the feedback protrusion 61, that is, the second clamping block 42 cannot continue to retreat. L6 < L5. Since the lifting component 5 continues to move a distance of L5 after the lifting platform reaches the highest position, the lifting component 5 must move a distance greater than L5 in the opposite direction before the handle 7 will be released. However, the presence of the backstop swing arm 62 and the feedback protrusion 61 allows the lifting component 5 to only retreat a length of L6. Therefore, the handle 7 will surely not be released.

[0129] The backstop swing arm 62 can be specifically set to a structure similar to a pawl. One end of the backstop swing arm 62 can be hinged in the fixed platform 22, or can be set as a spring piece directly fixed in the fixed platform 22. When the feedback convex block moves along the second clamping direction, it lifts the backstop swing arm 62 through an inclined plane, and no inclined plane is provided on the wall surface where the feedback protrusion 61 and the backstop swing arm 62 abut on the other side. When the fixed state of the handle 7 needs to be released, the backstop swing arm 62 must be manually lifted, and the second clamping block 42 can retreat a distance greater than L6, so as to drive the lifting component 5 back to the inclined path and lower the loading platform 21.

[0130] The abutment of the feedback protrusion 61 and the backstop swing arm 62 reminds the operator that when the machine retreats the second clamping block 42 at this time, the fixation of the handle 7 by the first clamping mechanism 3 will be released. When the operator determines to release the fixation of the handle 7, the backstop swing arm 62 is manually拨开 (should be "pushed aside"). This avoids the operator over-retreating the second clamping block 42 when not paying attention.

[0131] Embodiment 8

[0132] Refer to Figures 1-3 .

[0133] The mounting surface 11 is circular, and the shapes of the positioning parts B111 at different positions can be exactly the same without separately setting a machining plane.

[0134] It should be noted that the Chinese character "拨开" in the original text seems to be incorrect. I translated it as "pushed aside" according to the context, but it may need to be further confirmed according to the actual situation.In the description of the embodiments of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0135] In the description of embodiments of the present invention, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0136] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0137] In the description of embodiments of the present invention, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0138] In the description of the embodiments of the present invention, it should be understood that "-" and "~" represent a range of two numerical values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0139] In the description of embodiments of the present invention, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0140] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture assembly for machining flight handles, characterized in that, Includes multiple bases and a loading unit; The loading section is provided with a first clamping mechanism and a second clamping mechanism; The first clamping mechanism is used to fix the workpiece in the loading part; The second clamping mechanism is used to fix the loading part in the base; The loading part has a plurality of first positioning holes, which are coaxial with the positioning holes of the workpiece itself, so as to position the relative position of the handle and the loading part. The first clamping mechanism has a positioning part A; the base has a positioning part B; the positioning part A and the positioning part B are coupled to determine the relative angle and position between the loading part and the base; The base has a mounting surface through which the loading part is mounted. The mounting surface forms an angle α with the horizontal plane. The angle α formed between the mounting surface and the horizontal plane is different for different bases. The loading section has a double-layer structure, with the upper layer being a loading platform and the lower layer being a fixed platform. The loading platform and the fixed platform are slidably connected along the axial direction of the loading section. The second clamping mechanism includes a transmission screw, which is rotatably connected to the fixed platform; The second clamping block is threadedly connected to the transmission screw and slides along the second clamping direction; The second clamping direction is parallel to the axis of the transmission screw; The transmission lead screw has two sections of threads with different directions of rotation; the second clamping block has two parts, located in the two sections of threads respectively; The positioning part A is disposed in the second clamping block at one end of the mounting surface; The positioning part B is provided in multiple sets at the edge of the mounting surface, and each set of positioning parts B has two; the positioning part A and / or the positioning part B are coupled through a V-shaped structure, and the line connecting the vertices of the V-shaped structure in the coupled set of positioning parts B is parallel to the second clamping direction; The first positioning hole is located in the loading platform; The first clamping mechanism includes: a first clamping block located above the loading platform; a connecting shaft, one end of which is fixedly connected to the first clamping block and the other end of which is fixedly connected to the fixed platform, and the loading platform is slidably connected to the connecting shaft; A lifting component is provided between the loading platform and the fixed platform to drive the loading platform to move along a first clamping direction, which is the direction in which the loading platform faces the first clamping block.

2. The fixture assembly for machining flight handles according to claim 1, characterized in that, The loading platform is provided with a sliding groove A at its bottom, and the fixed platform is provided with a sliding groove B. The sliding groove A and the sliding groove B are combined to form a sliding channel, and the length direction of the sliding channel is parallel to the second clamping direction. The second clamping block pushes the lifting component to slide along the sliding channel; When the loading platform and the fixed platform are in contact, the minimum height of the sliding channel is L1, and the minimum height of the lifting component is L2; ​​L1≤L2; The front end of the slide A is provided with a first inclined surface, and the lifting component abuts against the first inclined surface. The first inclined surface converts the force parallel to the second clamping direction into a force parallel to the first clamping direction.

3. A fixture assembly for machining flight handles according to claim 2, characterized in that, The chute A includes an inclined path and a parallel path along the length of the sliding channel, and the inclined path is a path with a first inclined surface. The paths from the end of the inclined path to the end of the slide A are all parallel paths; the plane at the position of the parallel path is parallel to the length direction of the sliding channel; The projected length of the inclined path toward the top surface of the loading platform is L3; the projected length of the parallel path toward the top surface of the loading platform is L4. L3 <L4。 4. A fixture assembly for machining flight handles according to claim 3, characterized in that, The lifting component is connected to the second clamping block, and the second clamping block pushes the lifting component to move along the sliding channel.

5. A fixture assembly for machining flight handles according to claim 4, characterized in that, The lifting component is provided with a connecting threaded hole; The second clamping block is provided with a connecting through hole, and a connecting bolt is provided in the connecting through hole; The lifting component retracts only when the connecting bolt is connected to the connecting threaded hole, following the second clamping block. The retraction refers to the movement in the opposite direction to the second clamping direction.

6. A fixture assembly for machining flight handles according to claim 5, characterized in that, The lifting component is integrally connected to the second clamping block. When the lifting component is disengaged from the inclined path, the second clamping block must continue to move at least L5 lengths to clamp the mounting surface. The second clamping block has a feedback protrusion; The fixed platform is equipped with a backstop swing arm; When the second clamping block moves toward the second clamping direction, the anti-reverse swing arm avoids the feedback protrusion; When the second clamping block moves a distance L6 in the opposite direction to the second clamping direction, the anti-reverse swing arm blocks the feedback protrusion; L6 <L5。 7. A fixture assembly for machining flight handles according to claim 6, characterized in that, The mounting surface is circular.

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