A wall-bridge type high-stability five-axis machining center

Abstract

This invention discloses a wall-mounted bridge-type high-stability five-axis machining center, comprising a machining lathe, a worktable mounted on the machining lathe for placing parts, and a fixture detachably mounted on the worktable for clamping parts. The fixture consists of a disassembly plate detachably mounted on the worktable and two sets of clamping components mounted on the disassembly plate for holding parts. The side of the two sets of clamping components that is close to each other is adjusted according to the irregular curved surface of the part to fit and clamp the irregular curved surface of the part. This application has the effect of reducing material consumption when manufacturing parts with irregular curved surfaces using a wall-mounted bridge-type high-stability five-axis machining center.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a high-stability five-axis machining center for wall bridges. Background Technology

[0002] A five-axis machining center is a high-precision CNC machining equipment with five rotary axes. It can perform simultaneous machining in all five axes, enabling efficient machining of complex-shaped parts. Five-axis machining centers are widely used in industries such as aerospace, automotive manufacturing, mold making, and medical devices, capable of machining parts with complex shapes, high difficulty, and high precision requirements. A wall-mounted bridge-type high-stability five-axis machining center is a CNC machining equipment with a bridge structure, used for five-axis machining of complex or irregularly shaped parts.

[0003] Existing wall-mounted, bridge-type high-stability five-axis machining centers are typically mounted on a wall to enhance their stability. They consist of a machine body, spindle head, worktable, and electrical control system. The worktable is equipped with fixtures for holding parts; the spindle mounts the cutting tool; the machine body has three linear axes and two rotary axes. The rotary axes control the spindle rotation, enabling machining of the workpiece at different angles. The linear axes control the tool movement in the X, Y, and Z directions, as well as the feed rates of the spindle and tool. By controlling the movement of these five axes and thus the cutting path of the tool, multi-axis three-dimensional cutting of parts can be achieved. For machining large parts, the spindle head needs to be mounted on a bridge to enable machining of parts with large spans, allowing for the simultaneous cutting of the working surface of large parts.

[0004] When initially machining parts using an existing wall-mounted bridge-type high-stability five-axis machining center, the fixture always holds one side of the part while machining the other five sides. Then, the fixture is used again to hold the machined surface and machine the unmachined surfaces. However, when the machined surface is an irregular curved surface, a special fixture must first be fabricated to fit the curved surface. This fixture is then used to clamp the curved surface before machining the unmachined surfaces. Machining parts with irregular curved surfaces using this method results in high material consumption; therefore, there is still room for improvement. Summary of the Invention

[0005] In order to reduce the material consumption of a wall-mounted bridge-type high-stability five-axis machining center for manufacturing parts with irregular curved surfaces, this application provides a wall-mounted bridge-type high-stability five-axis machining center.

[0006] The technical solution adopted in this application for a wall-bridge type high-stability five-axis machining center is as follows:

[0007] A wall-mounted bridge-type high-stability five-axis machining center includes a machining lathe, a worktable on the machining lathe for placing parts, and a fixture detachably mounted on the worktable for clamping parts. The fixture consists of a disassembly plate detachably mounted on the worktable and two sets of clamping components mounted on the disassembly plate for clamping parts. The side of the two sets of clamping components that are close to each other is adjusted according to the irregular arc surface of the part to fit and clamp the irregular arc surface of the part.

[0008] By adopting the above technical solution, when it is necessary to clamp the irregular curved surface of a part, the fixture is first installed on the worktable, and then the part is placed between two sets of clamping components. The clamping components are adjusted to hold one side of the part until they fit the irregular curved surface of the part. The part is then clamped by the clamping components. This reduces the need to first manufacture a special fixture to fit the irregular curved surface of the part, and avoids the situation where a special fixture to fit the irregular curved surface of the part is difficult to reuse for other parts, resulting in material waste. This reduces the material consumption of the wall-mounted bridge-type high-stability five-axis machining center when manufacturing parts with irregular curved surfaces. At the same time, the fixture can be detachably installed on the worktable, so that when it is necessary to clamp the irregular curved surface of the part, the fixture is installed on the worktable. The fixture does not need to be adjusted to hold one side of the part first, reducing the impact of the fixture on the processing efficiency of general parts.

[0009] Preferably, the clamping member comprises a fixed frame disposed on the disassembly plate and a plurality of clamping rods disposed within the fixed frame for clamping parts. The plurality of clamping rods are arranged in a plurality of columns along the width direction of the disassembly plate and in a plurality of layers along the thickness direction of the disassembly plate, and the plurality of clamping rods are slidably disposed relative to each other. The clamping member is provided with a switching component for switching between the sliding state and the fixed state of the plurality of clamping rods, so as to fix the clamping rods after the plurality of clamping rods clamp the irregular arc surface of the part.

[0010] By adopting the above technical solution, the part is placed between two sets of clamping components. Then, the clamping rods are adjusted so that the ends of several clamping rods near the part abut against the irregular arc surface. A switching component is then used to fix several clamping rods, allowing the clamping components to clamp the irregular arc surface of the part, thus improving the applicability of the clamping components. Several points on the irregular arc surface of the part are fixed using several clamping rods, thereby fixing the part and reducing the vibration that the part is prone to during lathe cutting under elastic clamping, which is beneficial to improving the stability of the clamping components. Simultaneously, the clamping rods are arranged in several columns along the width direction of the disassembly plate and in several layers along the thickness direction of the disassembly plate, simplifying the arrangement of the clamping rods and making it easier for operators to identify and operate them.

[0011] Preferably, each of the clamping rods has a hemispherical block at one end for clamping the part, and when the clamping rod clamps the part, the hemispherical block abuts against the irregular arc surface of the part.

[0012] By adopting the above technical solution, when the machining lathe processes the part fixed in the fixture, the tool generates vibration during the cutting process. By setting a hemispherical block to abut against the irregular arc surface, the sharp corner of the end of the clamping rod that abuts against the irregular arc surface is reduced, which would cause the clamping rod to easily puncture the already cut irregular arc surface under vibration. This helps to protect the irregular arc surface of the part.

[0013] Preferably, the switching component includes an adjusting rod threaded onto the fixed frame and a clamping block sleeved on the adjusting rod. Several clamping rods in the same layer each have adjusting holes for inserting the adjusting rod, and the length of the adjusting hole is greater than the diameter of the adjusting rod. The clamping block is located on one side of the clamping member. The adjusting rod rotates and drives the clamping block to move towards the clamping member, thereby causing the clamping block to press against the clamping rods in the same layer. Each layer of clamping rods is provided with the switching component.

[0014] By adopting the above technical solution, the adjusting rod rotates and drives the clamping block to move towards the clamping component until it clamps the clamping rods of the same layer. The structure is simple and easy to operate, which improves the efficiency of fixing the clamping rods and thus the efficiency of clamping parts. Furthermore, by setting a switching element for each layer of clamping rods, each layer of clamping rods is individually clamped by the clamping block, ensuring that each layer of clamping rods is subjected to pressure. This reduces the situation where fixing one layer of clamping rods causes other clamping rods to be fixed, resulting in poor clamping effect and improving the stability of the clamping block fixing the clamping rods.

[0015] Preferably, the clamping block has protruding teeth on the side near the clamping rod, and the clamping rod near the clamping block has a recessed groove for the teeth to engage, and the groove is located on the side of the clamping rod near the clamping block. When the adjusting rod rotates and moves the clamping block toward the clamping member, the teeth engage in the groove.

[0016] By adopting the above technical solution, when the clamping block is used to clamp the clamping rod, the cleats engage with the slots, thereby fixing the relative position of the cleats and the slots. This reduces the possibility of the clamping block and clamping rod sliding under vibration during the cutting process, which could lead to the clamping rod separating from the part. This improves the stability of the clamping block in fixing the clamping rod, and thus improves the stability of the clamping rod in fixing the part. Simultaneously, the clamping rod with the slot is located on one side of the clamping component, allowing it to be used as a transmission structure for the clamping component and the clamping block to abut. This eliminates the need to use the clamping rod with the slot to clamp the irregular curved surface of the part, reducing the possibility that the cleats might not fully engage with the slots when clamping the irregular curved surface of the part.

[0017] Preferably, a plurality of protrusions are provided on one side of the clamping rods in the same layer that abut against each other, and the plurality of protrusions are elastic to increase the friction between the clamping rods in the same layer.

[0018] By adopting the above technical solution, when the clamping block is used to clamp the clamping rod, the protrusions set on the same layer of clamping rods are squeezed by the pressure of the clamping block. The elastic protrusions have a large coefficient of friction, which makes the static friction force on the side of the clamping rods that abut against each other large. This reduces the situation where the clamping rods of the same layer slide relative to each other under vibration during the cutting process, which would cause the clamping rods to separate from the parts. This further improves the stability of the clamping rods in fixing the parts, thereby improving the accuracy of machining lathe cutting parts when using a fixture to clamp the parts for cutting.

[0019] Preferably, the upper and lower sidewalls of the adjusting hole are inclined, and the opening height of the adjusting hole near the pressing block is greater than the opening height of the adjusting hole away from the pressing block; the adjusting rod is also sleeved and rotatably provided with a plurality of locking blocks, each of the locking blocks being trapezoidal, and the locking blocks are respectively located in the plurality of adjusting holes, with the upper bottom surface of the locking block facing the opening of the adjusting hole away from the pressing block; when the adjusting rod rotates until the locking teeth engage with the locking groove and press the clamping rod of the same layer, the waist surfaces on both sides of the locking block respectively press against the upper and lower sidewalls of the adjusting hole.

[0020] By adopting the above technical solution, when the adjusting rod rotates to the point where the locking teeth engage with the locking groove and press against the same layer of clamping rods, the locking block presses against the upper and lower side walls of the adjusting hole, increasing the friction of the locking block clamping rod. This increases the static friction between the clamping rod and the adjusting rod through the locking block, improving the stability of fixing the clamping rod using the adjusting rod, the pressing block, and the locking block, thereby further improving the stability of the clamping rod fixing parts.

[0021] Preferably, the waist surface of each of the locking blocks is covered with an elastic element. When the adjusting rod rotates until the locking teeth engage with the locking groove and press the clamping rods on the same layer, the elastic elements on both sides of the locking block abut against the upper and lower side walls of the adjusting hole, respectively, and the elastic elements are in a compressed state.

[0022] By adopting the above technical solution, the static friction between the locking block and the upper and lower sidewalls of the adjusting hole is increased by utilizing the elastic element, thereby further improving the stability of fixing the clamping rod using the adjusting rod, clamping block, and locking block. Simultaneously, the elastic element covers the waist surface of the locking block, and the waist surface of the locking block is inclined, allowing the pressure of the elastic element on the locking block under compression to be transmitted to the adjusting rod, driving the adjusting rod to extend outwards towards the adjusting hole. This increases the pressure between the threads of the adjusting rod and the threads of the fixing frame, thereby improving the stability of the adjusting rod and the fixing frame, which is beneficial for improving the stability of fixing the clamping rod using the switching element.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting fixtures that can be detachably mounted on the worktable and clamping components, the need for prefabricating special fixtures to fit the irregular curved surfaces of parts is reduced. Furthermore, these special fixtures are difficult to reuse on other parts after initial use, leading to material waste. This reduces material consumption when machining parts with irregular curved surfaces in the wall-mounted bridge-type high-stability five-axis machining center. It also reduces the impact of fixtures on the machining efficiency of general-purpose parts.

[0025] 2. By setting protrusions, the protrusions having elasticity, elastic elements, and locking blocks, it is beneficial to improve the stability of using adjusting rods and clamping blocks to clamp the same layer of clamping rods, reduce the situation of clamping rods sliding against each other during the machining of parts on a lathe, and thus improve the stability of fixing parts using clamping rods. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a wall-type high-stability five-axis machining center according to this application.

[0027] Figure 2 This is a schematic diagram of the overall structure of the fixture in this application.

[0028] Figure 3 This is a schematic diagram of the internal structure of the first-layer clamping rod of this application.

[0029] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0030] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0031] Figure 6 This is a schematic diagram of the internal structure connecting the clamping rod and the right side plate in this application.

[0032] Figure 7 yes Figure 6 Enlarged view of section C.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Fixture; 11. Disassembly plate; 111. Clamping foot; 12. Clamping component; 121. Fixing frame; 1211. Base plate; 1212. Left side plate; 1213. Right side plate; 122. Clamping rod; 2. Switching component; 21. Adjusting rod; 211. Knob; 212. Limiting ring; 213. Adjusting hole; 22. Pressing block; 221. Clamping tooth; 222. Clamping groove; 23. Locking block; 231. Elastic component; 3. Abutment rod; 31. Hemispherical block; 4. Slider; 41. Slide groove; 5. Friction groove; 51. Protrusion; 6. Machining lathe; 61. Worktable. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a wall-bridge type high-stability five-axis machining center. (Refer to...) Figure 1 as well as Figure 2 The wall-mounted bridge-type high-stability five-axis machining center includes a machining lathe 6, a worktable 61 mounted on the machining lathe 6, and a fixture 1 detachably mounted on the worktable 61. The fixture 1 is used to clamp parts. In this embodiment, the fixture 1 consists of a disassembly plate 11 detachably mounted on the worktable 61 and two sets of clamping components 12 mounted on the disassembly plate 11. In this embodiment, the disassembly plate is rectangular. A clamping foot 111 is fixed on one side of the disassembly plate 11 along the thickness direction. There are four clamping feet 111, and the four clamping feet 111 are located at the four corners of the disassembly plate 11. The clamping feet 111 are inserted into the worktable 61, so that the worktable 61 can fix the disassembly plate 11 by fixing the clamping feet 111. After the disassembly plate 11 is installed on the worktable 61, the length direction of the disassembly plate 11 is consistent with the length direction of the worktable 61. In this embodiment, the two sets of clamping components 12 are located at both ends of the disassembly plate 11 along the length direction. The clamping component 12 includes a fixed frame 121 fixed to the side of the disassembly plate 11 away from the clamping foot 111 and a plurality of clamping rods 122 slidably connected in the fixed frame 121. The fixed frame 121 includes a bottom plate 1211 fixed to the side of the disassembly plate 11 away from the clamping foot 111 and a left side plate 1212 and a right side plate 1213 fixed to both ends of the bottom plate 1211 along the length direction.

[0037] Reference Figure 2The base plate 1211, the left side plate 1212 and the right side plate 1213 are all rectangular plates. The length direction of the base plate 1211 is consistent with the length direction of the disassembly plate 11. The side walls of the left side plate 1212 along the width direction are flush with the side walls of the base plate 1211 along the width direction. The side walls of the left side plate 1212 and the right side plate 1213 along the width direction are also flush.

[0038] Reference Figure 2 as well as Figure 3 In this embodiment, the clamping rod 122 is square-shaped, and its length direction is consistent with the length direction of the disassembly plate 11. There are twenty-five clamping rods 122 in the same group of clamping components 12, and the twenty-five clamping rods 122 are arranged in five columns along the width direction of the disassembly plate 11 and in five layers along the thickness direction of the disassembly plate 11. The clamping rods 122 are slidably connected to each other and slidably connected to the bottom plate 1211 and the right side plate 1213. The clamping rods 122 located on different fixed frames 121 have abutment rods 3 fixed at their close ends. The abutment rods 3 are cylindrical, and a hemispherical block 31 protrudes from the end of the abutment rod 3 away from the clamping rods 122. By operating the clamping rods 122 on different fixed frames 121 to slide into the space between the two fixed frames 121, the hemispherical block 31 abuts against the irregular arc surface of the part located between the two fixed frames 121.

[0039] Reference Figure 2 A slider 4 is fixed to the side wall of the clamping rod 122 near the base plate 1211 and near the right side plate 1213. The slider 4 is an isosceles trapezoidal block, and the length of the slider 4 is the same as the length of the clamping rod 122. The two ends of the slider 4 along the length direction are flush with the two ends of the clamping rod 122 along the length direction. The side of the slider 4 near the clamping rod 122 is the upper bottom surface of the slider 4, and the upper bottom surface is fixedly connected to the slider 4.

[0040] Reference Figure 2 as well as Figure 6 The clamping rod 122 has recessed grooves 41 on its sidewalls near the left side plate 1212 and away from the bottom plate 1211 for the slider 4 to engage. Similarly, the sidewalls of the right side plate 1213 and the bottom plate 1211 near the clamping rod 122 also have recessed grooves 41 for the slider 4 to engage. The grooves 41 are inclined along their width, forming acute angles with the bottom wall. When the slider 4 engages in the groove 41, the waist surfaces on both sides of the slider 4 abut against the sidewalls of the groove 41 along their width, and the side of the slider 4 away from the clamping rod 122 abuts against the bottom wall of the groove 41, allowing the clamping rod 122, which is slidably connected within the same fixed frame 121, to slide relative to each other along its length.

[0041] Reference Figure 2The clamping rods 122 located on the same layer away from the base plate 1211 are arranged on the top side plane, and the top side of the clamping rods 122 located on the same layer away from the base plate 1211 is flush with the top side of the left side plate 1212 and the right side plate 1213. The clamping rods 122 located in the same row near the left side plate 1212 are arranged on the side wall plane, and the clamping rods 122 located in the same row near the left side plate 1212 are spaced apart from the left side plate 1212.

[0042] Reference Figure 3 as well as Figure 4 An adjustment hole 213 is provided on the side of the clamping rod 122 near the right side plate 1213. The adjustment hole 213 is rectangular, and its length direction is consistent with that of the clamping rod 122. The opening of the adjustment hole 213 near the left side plate 1212 is located on the bottom wall of the slide groove 41, and the height of the adjustment hole 213 is less than the width of the groove opening of the slide groove 41. The opening of the adjustment hole 213 near the right side plate 1213 is located on the bottom surface of the slider 4. When the two ends of the clamping rods 122 in the same layer are aligned along the width direction, the adjustment holes 213 on the clamping rods 122 in the same layer are directly opposite each other. The upper and lower side walls of the adjustment hole 213 are inclined from the middle position along the width direction to the portion of the adjustment hole 213 near the opening of the right side plate 1213, and the height of the opening of the adjustment hole 213 near the right side plate 1213 is less than the height of the opening of the adjustment hole 213 near the left side plate 1212.

[0043] Reference Figure 4 The fixed frame 121 is threadedly connected to a switching component 2 for switching between the sliding state and the fixed state of several clamping rods 122. In this embodiment, the switching component 2 includes an adjusting rod 21 whose two ends along the length direction are threadedly connected to the left side plate 1212 and the right side plate 1213 respectively, and a pressing block 22 sleeved on the adjusting rod 21. Each layer of clamping rods 122 is provided with an adjusting rod 21. The adjusting rod 21 in the same layer of clamping rods 122 is located in the adjusting hole 213 of the same layer of clamping rods 122, so that the clamping rods 122 in the same layer are connected in series on one adjusting rod 21.

[0044] Reference Figure 4Each adjusting rod 21 is also fitted with five locking blocks 23 and a limiting ring 212 for restricting the locking blocks 23 and the clamping blocks 22 to a set position in the length direction of the clamping rod 122. The five locking blocks 23 fitted on the adjusting rod 21 are located in the five adjusting holes 213 of the clamping rod 122 that are connected to the adjusting rod 21 and are in the same layer. The length of the adjusting hole 213 is greater than the diameter of the adjusting rod 21. The locking blocks 23 are in the shape of isosceles trapezoidal blocks, and the waist surfaces on both sides of the locking blocks 23 are covered with elastic elements 231. In this embodiment, the elastic elements 231 are rubber pads. The limiting ring 212 is fixedly connected to the adjusting rod 21. Twelve limiting rings 212 are fixed on the same adjusting rod 21. Two limiting rings 212 form a group. Five groups of limiting rings 212 are used to limit five locking blocks 23 respectively. The two limiting rings 212 in the same group used to limit the locking blocks 23 are located on the upper and lower bottom surfaces of the locking blocks 23 respectively. The upper and lower bottom surfaces of the locking blocks 23 are also recessed with grooves (not shown in the figure) for receiving the limiting rings 212. The limiting rings 212 fill the grooves, so that the locking blocks 23 are rotatably connected to the adjusting rod 21.

[0045] Reference Figure 7 One set of limiting rings 212 is used to limit the clamping block 22. The clamping block 22 is rectangular and is located between the clamping rod 122 and the left side plate 1212. Two limiting rings 212 of the same set used to limit the clamping block 22 are located on both sides of the clamping block 22 along the thickness direction. The side walls of the clamping block 22 along the thickness direction also have recesses for receiving the limiting rings 212 (not shown in the figure), and the limiting rings 212 fill the recesses, so that the clamping block 22 is rotatably connected to the adjusting rod 21. When the adjusting rod 21 is rotated, the adjusting rod 21 moves the clamping block 22 and the locking block 23 in conjunction. When the adjusting rod 21 is rotated to the point where the clamping block 22 presses against the clamping rod 122 of the same layer, the upper bottom surface of the locking block 23 is flush with the lower bottom surface of the slider 4. The lower bottom surface of the locking block 23 is located at the middle position of the adjusting hole 213 along the length direction. The elastic members 231 on the waist surfaces on both sides of the locking block 23 are in a compressed state.

[0046] Reference Figure 4 as well as Figure 5The clamping block 22 has protruding teeth 221 on one side near the clamping rod 122. The teeth 221 are serrated and their length direction is consistent with the length direction of the clamping block 22. There are two teeth 221, and the two teeth 221 are located on both sides of the clamping block 22 along its width direction. The clamping rods 122 in the same row near the clamping block 22 are all recessed with slots 222 for the teeth 221 to engage. There are two slots 222, and the two slots 222 are located above and below the adjustment hole 213, respectively. The two ends of the slots 222 along their length direction are flush with the two ends of the adjustment hole 213 along its length direction, and the depth of the slots 222 is less than half the width of the adjustment hole 213. When the rotating adjustment rod 21 is rotated to the point where the clamping block 22 presses against the clamping rod 122 of the same layer, the side of the locking tooth 221 away from the clamping block 22 abuts against the bottom wall of the slot 222, and the two sides of the locking tooth 221 along the thickness direction abut against the side walls of the slot 222 along the width direction.

[0047] Reference Figure 6 as well as Figure 7 The sidewalls of the clamping rods 122 in the same layer that abut against each other, as well as the sidewall of the right side plate 1213 near the clamping rods 122, are all recessed with friction grooves 5. The friction grooves 5 are rectangular grooves, and their length direction is consistent with the length direction of the clamping rods 122. The length of the friction grooves 5 is less than the length of the adjustment hole 213. Each sidewall of the clamping rods 122 in the same layer that abuts against each other has two friction grooves 5, and the two friction grooves 5 are located above and below the adjustment hole 213. The right side plate 1213 has ten friction grooves 5, and the ten friction grooves 5 recessed on the right side plate 1213 are aligned with the ten friction grooves 5 recessed on the same row of clamping rods 122 that abut against the right side plate 1213. The bottom wall of the friction groove 5 is also fixed with several protrusions 51. The protrusions 51 are elastic, hemispherical, and their radii are greater than the depth of the friction groove 5 but less than twice the depth of the friction groove 5. The protrusions 51 are densely distributed on the bottom wall of the friction groove 5. When the adjusting rod 21 is rotated until the clamping block 22 presses against the clamping rod 122 on the same layer, the protrusions 51 are in a compressed state.

[0048] Reference Figure 4 Each adjusting rod 21 has a knob 211 fixed at both ends, and the knob 211 is in the shape of a regular hexagonal frustum.

[0049] The implementation principle of a wall-bridge type high-stability five-axis machining center according to an embodiment of this application is as follows:

[0050] When a part with an irregular arc surface needs to be clamped for cutting, the fixture 1 is first fixed to the worktable 61, and the worktable 61 further fixes the fixture 1 via the fixing feet 111. Then, the part is placed between the two fixing frames 121, and the clamping rod 122 located within the two fixing frames 121 is pushed towards the part until the hemispherical block 31 abuts against the irregular arc surface of the part. At this point, the protrusion 51 is under pressure, restricting the sliding of the clamping rod 122. Next, the knob 211 is rotated using an Allen wrench, thereby rotating the adjusting rod 21. The adjusting rod 21 drives the clamping block 22 and the locking block 23 to move, while the limiting ring 212 restricts the relative sliding of the clamping block 22 and the locking block 23 with the adjusting rod 21. Rotate the adjusting rod 21 until the clamping block 22 presses against the clamping rod 122 on the same layer, thereby causing the hemispherical block 31 to press against the irregular arc surface of the part. The elastic element 231 covering the waist surface on both sides of the locking block 23 is in a compressed state and drives the adjusting rod 21 to extend out of the adjusting hole 213 through the locking block 23, thereby increasing the friction between the thread of the adjusting rod 21 and the thread of the fixed frame 121, and improving the stability of the adjusting rod 21. Then start the machining lathe 6 to cut the part.

[0051] By setting up the disassembly plate 11, the fixing frame 121, the clamping rod 122, the hemispherical block 31, the adjusting hole 213, the clamping block 22, and the adjusting rod 21, the clamping rod 122 located in the two fixing frames 121 presses against the irregular arc surface of the part located in the fixing frame 121, thereby fixing the part and reducing the waste of material of the special fixture 1 for separately reinforcing the part. At the same time, the hemispherical block 31 protects the irregular arc surface of the part and reduces the possibility of the clamping rod 122 piercing the irregular arc surface of the part during the machining of the part by the lathe 6.

[0052] By setting a limiting ring 212, a retaining tooth 221, a retaining groove 222, a protrusion 51, the protrusion 51 having elasticity, an elastic element 231, and a locking block 23, it is beneficial to improve the stability of using the adjusting rod 21 and the clamping block 22 to clamp the same layer of clamping rod 122, and reduce the situation where the clamping rod 122 slides against each other during the machining of parts on the lathe 6; at the same time, the limiting ring 212 restricts the relative sliding between the clamping block 22 and the locking block 23 and the adjusting rod 21, thereby fixing the position of the locking block 23 and the clamping block 22, reducing the situation where the clamping rod 122 becomes loose due to the relative sliding between the clamping block 22 and the locking block 23 and the adjusting rod 21, thereby improving the stability of fixing parts using the clamping rod 122.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-stability five-axis machining center with a wall-mounted bridge structure, characterized in that, The machine includes a machining lathe (6), a worktable (61) set on the machining lathe (6) for placing parts, and a fixture (1) detachably mounted on the worktable (61) for clamping parts. The fixture (1) consists of a disassembly plate (11) detachably mounted on the worktable (61) and two sets of clamping members (12) set on the disassembly plate (11) for clamping parts. The two sets of clamping members (12) are adjusted according to the irregular arc surface of the parts to fit and clamp the irregular arc surface of the parts. The clamping member (12) consists of a fixed frame (121) disposed on the disassembly plate (11) and a plurality of clamping rods (122) disposed within the fixed frame (121) for clamping parts. The plurality of clamping rods (122) are arranged in a plurality of columns along the width direction of the disassembly plate (11) and in a plurality of layers along the thickness direction of the disassembly plate (11), and the plurality of clamping rods (122) are slidably disposed relative to each other. The clamping member (12) is provided with a switching member (2) for switching the plurality of clamping rods (122) between a sliding state and a fixed state, so as to fix the clamping rods (122) after the plurality of clamping rods (122) clamp the irregular arc surface of the part. The switching component (2) includes an adjusting rod (21) threaded onto the fixed frame (121) and a clamping block (22) rotatably sleeved on the adjusting rod (21). Several clamping rods (122) in the same layer are provided with adjusting holes (213) for the adjusting rod (21) to be inserted, and the length of the adjusting hole (213) is greater than the diameter of the adjusting rod (21). The clamping block (22) is located between the left side plate of the fixed frame (121) and the left clamping rod (122). The adjusting rod (21) rotates and drives the clamping block (22) to move toward the clamping member (12), so as to drive the clamping block (22) to press the clamping rod (122) in the same layer. Each layer of clamping rods (122) is provided with the switching component (2). The upper and lower sidewalls of the adjustment hole (213) are inclined, and the opening height of the adjustment hole (213) near the clamping block (22) is greater than the opening height of the adjustment hole (213) away from the clamping block (22); the adjustment rod (21) is also sleeved and rotatably provided with a number of locking blocks (23), each of the locking blocks (23) is trapezoidal, and the locking blocks (23) are respectively located in the adjustment holes (213), and the upper bottom surface of the locking block (23) faces the opening of the adjustment hole (213) away from the clamping block (22); when the clamping block (22) presses the clamping rod (122) of the same layer, the waist surfaces on both sides of the locking block (23) respectively squeeze the upper and lower sidewalls of the adjustment hole (213).

2. The wall-bridge type high-stability five-axis machining center according to claim 1, characterized in that, Each of the clamping rods (122) has a hemispherical block (31) at one end for clamping the part. When the clamping rod (122) clamps the part, the hemispherical block (31) abuts against the irregular arc surface of the part.

3. The wall-bridge type high-stability five-axis machining center according to claim 1, characterized in that, The clamping block (22) has a protruding tooth (221) on the side near the clamping rod (122), and the clamping rod (122) near the clamping block (22) has a recessed groove (222) for the tooth (221) to engage. The groove (222) is located on the side of the clamping rod (122) near the clamping block (22). When the adjusting rod (21) rotates and moves the clamping block (22) toward the clamping member (12), the tooth (221) engages in the groove (222).

4. The wall-bridge type high-stability five-axis machining center according to claim 1, characterized in that, A plurality of protrusions (51) are provided on one side of the clamping rods (122) in the same layer that abut against each other, and the plurality of protrusions (51) are elastic to increase the friction between the clamping rods (122) in the same layer.

5. A wall-bridge type high-stability five-axis machining center according to claim 3, characterized in that, The waist surface of several of the locking blocks (23) is covered with elastic elements (231). When the adjusting rod (21) rotates until the locking teeth (221) are engaged in the locking groove (222) and press the clamping rod (122) on the same layer, the elastic elements (231) on both sides of the locking block (23) abut against the upper and lower side walls of the adjusting hole (213) respectively, and the elastic elements (231) are in a compressed state.

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