A clamping tool for clamping special-shaped parts

Abstract

The present invention provides a clamping tool for clamping special-shaped parts, belonging to the technical field of part processing. It includes a base, on the top of which a slide rail is provided, an installation pipe is nested and installed at the center of the base, and support seats are installed at equal angles on the top of the base. By setting an outer clamping component, the elastic metal plate deforms under the action of oil, enabling the three contact heads to tightly clamp against the contact surface of the volute blank, so that when processing special-shaped parts such as volutes, the clamping position can be adaptively clamped according to the shape of the blank, facilitating the operation of the operator, being applicable to the clamping of volutes with different shapes, and through the continuous contact of the oil with the elastic metal plate, weakening the vibration force during the milling process of the thin-walled volute parts, reducing resonance, improving the processing accuracy, and avoiding the occurrence of an elliptical machining surface.

Description

Technical Field

[0001] The present invention relates to the technical field of part processing, and particularly relates to a clamping tool for clamping special-shaped parts. Background Art

[0002] Special-shaped parts refer to parts with irregular shapes and complex structures. The shapes of special-shaped parts are usually irregular and may include complex curved surfaces, curves, and asymmetric structures, which makes their design and manufacturing difficult. Among them, volute products have different diameters, and the diameter differences are very large, and the shapes of the internal cavities are not unified.

[0003] Currently, the clamping of volutes usually uses a form of a chuck fixture combined with a pressure plate to clamp the volute. Since the outer shape of the volute is non-circular and helical, it requires operators to perform multiple clamping and alignment operations. When dealing with different sizes and different machining inner cavity requirements, it is necessary to re-adjust the clamping position, which is relatively complex in operation, time-consuming, and cannot provide multi-directional supporting forces for thin-walled volute parts during machining. It is easy to generate resonance through vibration, and the volute port is prone to displacement, affecting the machining accuracy. At the same time, when machining the inner end of the volute, machining debris is likely to accumulate in the inner hole of the volute, which is likely to cause resonance of the volute by the debris in the inner hole, easily scratch the inner wall of the volute, affect the surface finish of machining, and easily increase the wear of the machining tool. Therefore, the present application provides a clamping tool for clamping special-shaped parts to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a clamping tool for clamping special-shaped parts to solve the problems that when dealing with different sizes and different machining inner cavity requirements, it is necessary to re-adjust the clamping position, which is relatively complex in operation, time-consuming, and cannot provide multi-directional supporting forces for thin-walled volute parts during machining. It is easy to generate resonance through vibration, affecting the machining accuracy. When machining the inner end of the volute, machining debris is likely to accumulate in the inner hole of the volute, which is likely to cause resonance of the volute by the debris in the inner hole, easily scratch the inner wall of the volute, affect the surface finish of machining, and easily increase the wear of the machining tool.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A clamping tool for clamping special-shaped parts, including a base. A slide rail is provided at the top of the base. An installation tube is nested and installed at the center of the base. Support seats are installed at the top of the base in an equiangular distribution. It also includes an outer clamping assembly installed on one side of the support seat for clamping the outer side of the part; an inner clamping assembly installed at the top of the base for clamping the inner side of the part; and a port fixing assembly installed inside the slide rail for clamping and fixing the port position of the part. There are three groups of support seats. The outer clamping assembly is installed outside the inner clamping assembly, and the port fixing assembly is located on one side of the installation tube.

[0007] Optionally, the outer clamping assembly includes a first piston cylinder installed on one side of the support seat. A first piston plate is nested and installed inside the first piston cylinder. The first piston plate slides inside the first piston cylinder. An elastic metal plate is connected to the end of the first piston cylinder.

[0008] Optionally, elastic telescopic rods are equidistantly distributed and connected to one side of the elastic metal plate. There are three groups of elastic telescopic rods equidistantly distributed. Each group of elastic telescopic rods is equidistantly provided with several. The end of each elastic telescopic rod is connected with a contact head. A limiting frame is connected to the outside of the first piston cylinder. Each contact head slides inside the limiting frame respectively.

[0009] Optionally, one side of the first piston cylinder is connected to an oil bucket one through a pipeline. A first push plate is nested and installed inside the oil bucket one. The first push plate slides inside the oil bucket one. The oil bucket one is nested and installed inside the base. The end of the first push plate is connected with a first threaded sleeve. A first screw rod is threadedly engaged inside the first threaded sleeve. The first screw rod is nested and installed inside the oil bucket one. One end of the first screw rod penetrates through the oil bucket one and is installed. The end of the first screw rod is connected with a quick-release handle one.

[0010] Optionally, the inner clamping assembly includes a mounting plate installed inside the installation tube. A support rod is connected to the top of the mounting plate. Four groups of oil holes are equiangularly distributed on the surface of the mounting plate. A second piston plate is sleeved outside the support rod. The second piston plate slides inside the installation tube.

[0011] Optionally, four groups of connecting plates one are arranged at equal angles at the top end of the piston plate two. The connecting plates one rotate at the top end of the piston plate two respectively. The end parts of the four groups of connecting plates one are respectively connected with supporting blocks. One sides of the four groups of supporting blocks are respectively connected with connecting plates two. The connecting plates two rotate at one sides of the supporting blocks respectively. The four groups of connecting plates two are connected with the mounting ring. The connecting plates two rotate on the outer side of the mounting ring. The mounting ring is sleeved on the outer side of the support rod. A dust cover is installed at the top end of the mounting ring. The dust cover is sleeved on the outer side of the support rod.

[0012] Optionally, the bottom end of the mounting plate is connected with an oil barrel two through a pipeline. The oil barrel two is nested and installed inside the base. A push plate two is nested and installed inside the oil barrel two. The end part of the push plate two is connected with a threaded sleeve two. A screw rod two is in threaded engagement with the inner side of the threaded sleeve two. The screw rod two is nested and installed inside the oil barrel two. One end of the screw rod two penetrates through the oil barrel two for installation. The end part of the screw rod two is connected with a quick-release handle two.

[0013] Optionally, the port fixing assembly includes a slider. The slider is installed inside the slide rail. The slider slides inside the slide rail. Two groups of mounting rods are symmetrically installed inside the slider. The end parts of the mounting rods are connected with fixing plates. A sliding sleeve is sleeved on the outer side of the mounting rods. The end part of the sliding sleeve is connected with a sliding plate. One side of the fixing plate is connected with a piston cylinder two. A piston plate three is nested and installed inside the piston cylinder two. The piston plate three slides inside the piston cylinder two.

[0014] Optionally, the end part of the piston plate three is connected with a piston rod. The piston rod penetrates through the piston cylinder two for installation. The tail end of the piston rod is connected with the sliding plate. The piston cylinder two is connected with an oil barrel three through a pipeline. The oil barrel three is installed inside the slider. A push plate three is nested and installed inside the oil barrel three.

[0015] Optionally, the push plate three slides inside the oil barrel three. One side of the push plate three is connected with a threaded sleeve three. A screw rod three is in threaded engagement with the inner side of the threaded sleeve three. The screw rod three is nested and installed inside the oil barrel three. One end of the screw rod three penetrates through the oil barrel three for installation. The end part of the screw rod three is connected with a quick-release handle three.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by setting the outer clamping assembly, the elastic metal plate deforms under the action of the oil, enabling the three contact heads to tightly hold the contact surface of the volute blank. This allows for adaptive clamping of the holding position according to the shape of the blank during the machining of volute-shaped special-shaped parts, facilitating the operation of the operator. It can be applied to volutes of different shapes for clamping. Moreover, through the continuous contact between the oil and the elastic metal plate, the vibration force during the milling of thin-walled volute parts is reduced, resonance is decreased, the machining accuracy is improved, and the situation of an elliptical machining surface is avoided.

[0018] By setting the inner clamping assembly, the oil is used to push and cooperate with connecting plate 1 and connecting plate 2, enabling the support block to support the inner wall of the volute. When machining thin-walled volute parts, the clamping tooling can provide multi-directional clamping support force to the volute parts, reduce machining vibration, improve machining accuracy, avoid over-cutting caused by vibration, and reduce the generation of scrapped parts.

[0019] By setting the port fixing assembly, the oil is used to drive the movable plate and the fixed plate to clamp the volute port, position the port, assist in positioning the clamping of the outer clamping assembly and the inner clamping assembly, and at the same time, provide support force to the port to avoid offset deformation of the volute port caused by excessive vibration force during machining.

[0020] By setting the dust cover, by replacing the dust cover of the corresponding size and sleeving it on the support rod, machining debris will not enter the inner hole position of the volute, avoiding vibration of the volute caused by debris accumulation in the inner hole position, preventing excessive debris from causing scratches during the machining of thin-walled volute parts, resulting in low machining accuracy of the volute, and reducing the vibration wear of the machining tool. Description of the Drawings

[0021] The drawings incorporated herein and forming part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a clamping tooling for clamping special-shaped parts;

[0023] Figure 2 It is a cross-sectional view of the three-dimensional structure of a clamping tooling for clamping special-shaped parts;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the outer clamping assembly;

[0025] Figure 4 For Figure 3 The enlarged three-dimensional structure diagram of A in

[0026] Figure 5Schematic three-dimensional structure diagram of the assembly of piston cylinder I, contact head and limit frame;

[0027] Figure 6 Schematic three-dimensional structure diagram of the assembly of elastic metal plate, elastic telescopic rod and contact head;

[0028] Figure 7 Schematic three-dimensional structure diagram of the assembly of piston plate I and support seat;

[0029] Figure 8 Schematic three-dimensional structure diagram of the inner clamping assembly;

[0030] Figure 9 Schematic three-dimensional structure diagram of the assembly of mounting pipe and inner clamping assembly;

[0031] Figure 10 Schematic three-dimensional structure diagram of the port fixing assembly;

[0032] Figure 11 Schematic three-dimensional structure diagram of the assembly of mounting rod, fixing plate, sliding sleeve and sliding plate;

[0033] Figure 12 Inner side cross-sectional view of the three-dimensional structure of piston cylinder II.

[0034] Reference numerals:

[0035] 1. Base; 2. Slide rail; 3. Mounting pipe; 4. Support seat; 5. Outer clamping assembly; 51. Piston cylinder I; 52. Piston plate I; 53. Elastic metal plate; 54. Elastic telescopic rod; 55. Contact head; 56. Limit frame; 57. Oil drum I; 58. Pusher plate I; 59. Threaded sleeve I; 510. Screw rod I; 511. Quick-release handle I; 6. Inner clamping assembly; 61. Mounting plate; 62. Support rod; 63. Oil hole; 64. Piston plate II; 65. Connecting plate I; 66. Support block; 67. Connecting plate II; 68. Mounting ring; 680. Dust cover; 69. Oil drum II; 610. Pusher plate II; 611. Threaded sleeve II; 612. Screw rod II; 613. Quick-release handle II; 7. Port fixing assembly; 71. Slide block; 72. Mounting rod; 720. Fixing plate; 73. Sliding sleeve; 74. Sliding plate; 75. Piston cylinder II; 76. Piston plate III; 77. Piston rod; 78. Oil drum III; 79. Pusher plate III; 710. Threaded sleeve III; 711. Screw rod III; 712. Quick-release handle III.

[0036] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0037] The following will describe in detail a clamping tool for clamping special-shaped parts provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0038] It should be noted that in the specification, references to "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiment may include a specific feature, structure, or characteristic, but not necessarily every embodiment includes that specific feature, structure, or characteristic. Additionally, when combining an embodiment to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0039] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0040] It can be understood that the meanings of "on...", "above...", and "overhead of..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "overhead of..." not only means "above" or "overhead of" something, but also can include the meaning of being "above" or "overhead of" something with no intervening features or layers therebetween.

[0041] Furthermore, spatial relative terms such as "under...", "below...", "lower part", "above...", "upper part", etc. are used herein for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the accompanying drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0042] As Figures 1 to 12As shown in the figure, an embodiment of the present invention provides a clamping tool for clamping special-shaped parts, including a base 1. A slide rail 2 is provided at the top of the base 1. An installation tube 3 is nested and installed at the center of the base 1. Support seats 4 are installed at the top of the base 1 in an equiangular distribution. It also includes an outer clamping component 5 installed on one side of the support seat 4 for clamping the outer side of the part, an inner clamping component 6 installed at the top of the base 1 for clamping the inner side of the part, and a port fixing component 7 installed inside the slide rail 2 for clamping and fixing the port position of the part. There are three groups of support seats 4. The outer clamping component 5 is installed outside the inner clamping component 6, and the port fixing component 7 is located on one side of the installation tube 3.

[0043] As Figures 3 to 7 shown, the outer clamping component 5 includes a first piston cylinder 51 installed on one side of the support seat 4. A first piston plate 52 is nested and installed inside the first piston cylinder 51 and slides inside the first piston cylinder 51. An elastic metal plate 53 is connected to the end of the first piston cylinder 51. The elastic metal plate 53 is made of titanium alloy material. A sealing ring made of PU material is installed at the contact part between the elastic metal plate 53 and the inner wall of the first piston cylinder 51. Elastic telescopic rods 54 are equidistantly distributed and connected to one side of the elastic metal plate 53. There are three groups of elastic telescopic rods 54 equidistantly distributed. Each group of elastic telescopic rods 54 is equidistantly provided with several. The end of each elastic telescopic rod 54 is connected with a contact head 55. The contact head 55 is made of nickel-aluminum alloy material, and the end of the contact head 55 is set to be semicircular. A limit frame 56 is connected to the outside of the first piston cylinder 51, and each contact head 55 slides inside the limit frame 56 respectively. One side of the first piston cylinder 51 is connected to an oil barrel 57 through a pipeline. A first push plate 58 is nested and installed inside the oil barrel 57 and slides inside the oil barrel 57. The oil barrel 57 is nested and installed inside the base 1. The end of the first push plate 58 is connected with a first threaded sleeve 59. A first screw rod 510 is in threaded engagement inside the first threaded sleeve 59. The first screw rod 510 is nested and installed inside the oil barrel 57. One end of the first screw rod 510 penetrates through the oil barrel 57 and is installed. One end of the first screw rod 510 is installed on the side wall of the oil barrel 57 through a bearing and an oil seal to ensure that the first screw rod 510 can rotate normally. The end of the first screw rod 510 is connected with a quick-release handle 511.

[0044] By setting the outer clamping assembly 5, the operator can snap the quick-release handle 511 onto the end of the first screw 510 and rotate the quick-release handle 511 to drive the first screw 510 to rotate. The first threaded sleeve 59 engages with the first screw 510 through threading, driving the first push plate 58 to move downward inside the first oil barrel 57, so that the first push plate 58 pushes the oil to enter the inside of the three piston barrels 51 through the pipeline respectively. In the initial state, there is oil inside the piston barrel 51. During operation, the first piston plate 52 is moved, and the first piston plate 52 pushes the oil in the piston barrel 51 towards the elastic metal plate 53 for extrusion, causing the elastic metal plate 53 made of titanium alloy to deform. The elastic telescopic rod 54 drives the corresponding contact head 55 to contact the outer wall of the volute blank. Since the shape of the outer wall of the volute blank is arc-shaped, due to the different contact heights of the three contact heads 55, the three contact heads 55 slide inside the limit frame 56 respectively, generating different extrusion forces on the corresponding elastic telescopic rods 54. At this time, the deformation and bending shape of the elastic metal plate 53 is the same as the contact surface shape of the three contact heads 55 with the volute blank, clamping the volute blank, enabling adaptive clamping of the clamping position according to the shape of the blank when processing volute-shaped special-shaped parts, and being applicable to clamping volutes of different shapes. During processing, through the continuous contact of the oil with the elastic metal plate 53, the vibration force during the milling process of the thin-walled volute parts is weakened, the stability of the thin-walled volute parts is increased, resonance is reduced, and the processing accuracy is improved. After confirming that the clamping is complete, stop rotating the quick-release handle 511 and remove the quick-release handle 511.

[0045] Such as Figures 8 to 9As shown, the inner clamping assembly 6 includes a mounting plate 61 which is installed inside the mounting tube 3. The top end of the mounting plate 61 is connected to a support rod 62. Four groups of oil holes 63 are arranged on the surface of the mounting plate 61 at equal angles. A second piston plate 64 is sleeved outside the support rod 62. The second piston plate 64 slides inside the mounting tube 3. Four groups of first connecting plates 65 are arranged on the top end of the second piston plate 64 at equal angles. The first connecting plates 65 rotate on the top end of the second piston plate 64 respectively. The end parts of the four groups of first connecting plates 65 are respectively connected to support blocks 66. One sides of the four groups of support blocks 66 are respectively connected to second connecting plates 67. The second connecting plates 67 rotate on one sides of the support blocks 66 respectively. The four groups of second connecting plates 67 are connected to a mounting ring 68. The second connecting plates 67 rotate outside the mounting ring 68. The mounting ring 68 is sleeved outside the support rod 62. A dust cover 680 is installed at the top end of the mounting ring 68. The dust cover 680 is sleeved outside the support rod 62. The bottom end of the mounting plate 61 is connected to a second oil bucket 69 through a pipeline. The second oil bucket 69 is nested and installed inside the base 1. A second push plate 610 is nested and installed inside the second oil bucket 69. The end part of the second push plate 610 is connected to a second threaded sleeve 611. A second screw rod 612 is threadedly engaged inside the second threaded sleeve 611. The second screw rod 612 is nested and installed inside the second oil bucket 69. One end of the second screw rod 612 penetrates through the second oil bucket 69 and is installed. One end of the second screw rod 612 is installed on the side wall of the second oil bucket 69 through a bearing and a oil seal to ensure that the second screw rod 612 can rotate normally. The end part of the second screw rod 612 is connected to a second quick-release handle 613.

[0046] By setting the inner clamping assembly 6, then the operator clips the quick-release handle two 613 onto the end of the screw two 612 and rotates the quick-release handle two 613 to make the screw two 612 rotate accordingly. The screw two 612 is in threaded engagement with the threaded sleeve two 611, causing the threaded sleeve two 611 to push the push plate two 610 to move downward inside the oil barrel two 69, enabling the oil to enter the inside of the installation pipe 3 through the pipeline. The oil passes through the oil holes 63 on the installation plate 61 and pushes the piston plate two 64 to move upward outside the support rod 62. Since the installation ring 68 is fixedly installed outside the support rod 62, as the piston plate two 64 moves upward, the four connecting plates one 65 rotate at the top of the piston plate two 64. At the same time, the connecting plates two 67 connected to the outside of the installation ring 68 rotate, causing the support blocks 66 where the corresponding connecting plates one 65 and connecting plates two 67 are connected to move towards the position close to the inner wall of the volute, clamping the inner wall of the volute. This avoids the lack of support force inside the volute and excessive vibration during the machining of the outer wall, which affects the machining accuracy. At the same time, it avoids damage to the machining tool caused by excessive vibration. After confirming that the clamping is complete, stop rotating the quick-release handle two 613 and remove the quick-release handle two 613. When machining the outer surface and the end of the volute, by replacing the dust cover 680 of the corresponding size on the support rod 62, the machining debris will not enter the inner hole position of the volute, avoiding the accumulation of debris in the inner hole position and causing vibration to the volute, which affects the machining accuracy of the volute. At the same time, it avoids scratches caused by excessive debris during the machining of thin-walled volute parts.

[0047] Such as Figures 10 to 12As shown in the figure, the port fixing component 7 includes a slider 71. The slider 71 is installed inside the slide rail 2 and slides inside the slide rail 2. Two groups of mounting rods 72 are symmetrically installed inside the slider 71. The end of the mounting rod 72 is connected with a fixing plate 720. A sliding sleeve 73 is sleeved outside the mounting rod 72. The end of the sliding sleeve 73 is connected with a sliding plate 74. One side of the fixing plate 720 is connected with a second piston cylinder 75. An air outlet is arranged at the end of the second piston cylinder 75. A third piston plate 76 is nested and installed inside the second piston cylinder 75. The third piston plate 76 slides inside the second piston cylinder 75. The end of the third piston plate 76 is connected with a piston rod 77. The piston rod 77 is installed through the second piston cylinder 75. The tail end of the piston rod 77 is connected with the sliding plate 74. The second piston cylinder 75 is connected with an oil barrel three 78 through a pipeline. The oil barrel three 78 is installed inside the slider 71. A third push plate 79 is nested and installed inside the oil barrel three 78. The third push plate 79 slides inside the oil barrel three 78. One side of the third push plate 79 is connected with a third threaded sleeve 710. A third screw rod 711 is in threaded engagement inside the third threaded sleeve 710. The third screw rod 711 is nested and installed inside the oil barrel three 78. One end of the third screw rod 711 is installed through the oil barrel three 78. One end of the third screw rod 711 is installed on the side wall of the oil barrel three 78 through a bearing and an oil seal to ensure that the third screw rod 711 can rotate normally. The end of the third screw rod 711 is connected with a quick-release handle three 712.

[0048] By setting the port fixing component 7, the operator pushes the slider 71 on the slide rail 2 to align the slider 71 with the port position of the volute and align the fixing plate 720 with the horn port position of the volute. After the operator clamps the quick-release handle three 712 at the end of the third screw rod 711 and rotates it, the third screw rod 711 meshes with the third threaded sleeve 710 through threads, so that the third threaded sleeve 710 drives the third push plate 79 to move and squeeze the oil inside the oil barrel three 78, so that the oil enters the inside of the second piston cylinder 75 through the pipeline, pushing the third piston plate 76. The air between the second piston cylinder 75 and the third piston plate 76 is discharged through the air outlet at the end of the second piston cylinder 75, so that the piston rod 77 drives the sliding plate 74 to move. The sliding sleeve 73 slides on the outside of the mounting rod 72 to assist the sliding, so that the sliding plate 74 pushes the horn port of the volute to contact the fixing plate 720 on the opposite side of the horn port of the volute. The sliding plate 74 clamps the horn port of the volute. Then, after confirming that the clamping is complete, stop rotating the quick-release handle three 712 and remove the quick-release handle three 712.

[0049] The working principle of the technical solution provided by the present invention is as follows:

[0050] When an operator performs milling on special-shaped parts such as a volute, the operator first places the clamping tooling on the cleaned workbench. After leveling the workbench with a special measuring instrument, the operator fixes the base 1 with bolts and a pressure plate. Subsequently, the volute blank is placed above the base 1. First, the dust cover 680 is removed from the support rod 62. The operator pushes the slider 71 on the slide rail 2 to align the slider 71 with the port position of the volute and the fixed plate 720 with the horn port position of the volute. After the operator clips the quick-release handle three 712 onto the end of the screw three 711 and rotates it, the screw three 711 meshes with the thread sleeve three 710 through threads, causing the thread sleeve three 710 to drive the push plate three 79 to move and squeeze the oil in the oil barrel three 78. The oil enters the inside of the piston cylinder two 75 through the pipeline, pushing the piston plate three 76. The air between the piston cylinder two 75 and the piston plate three 76 is discharged through the air outlet at the end of the piston cylinder two 75, causing the piston rod 77 to drive the sliding plate 74 to move. The sliding sleeve 73 slides on the outside of the mounting rod 72 to assist, so that the sliding plate 74 pushes the horn port of the volute to contact the fixed plate 720 on the opposite side of the horn port of the volute. The sliding plate 74 clamps the horn port of the volute. Subsequently, after confirming that the clamping is complete, the rotation of the quick-release handle three 712 is stopped, and the quick-release handle three 712 is removed.

[0051] The operator clips the quick-release handle one 511 onto the end of the screw one 510 and rotates the quick-release handle one 511 to drive the screw one 510 to rotate. The thread sleeve one 59 meshes with the screw one 510 through threads and drives the push plate one 58 to move downward inside the oil barrel one 57, causing the push plate one 58 to push the oil through the pipeline into the inside of the three groups of piston cylinders one 51 respectively. In the initial state, there is oil inside the piston cylinder one 51. During operation, the piston plate one 52 moves, and the piston plate one 52 pushes the oil in the piston cylinder one 51 towards the elastic metal plate 53 for extrusion, causing the elastic metal plate 53 made of titanium alloy to deform. The elastic telescopic rod 54 drives the corresponding contact head 55 to contact the outer wall of the volute blank. Since the shape of the outer wall of the volute blank is arc-shaped, the three contact heads 55 slide inside the limit frame 56 due to different contact heights, generating different extrusion forces on the corresponding elastic telescopic rods 54. At this time, the deformed and bent shape of the elastic metal plate 53 is the same as the contact surface shape of the three contact heads 55 with the volute blank, clamping the volute blank. This enables adaptive clamping of the clamping position according to the shape of the blank when processing special-shaped parts such as volutes, and can be used for clamping volutes of different shapes. During processing, through the continuous contact of the oil with the elastic metal plate 53, the vibration force during the milling of thin-walled volute parts is reduced, the stability of the thin-walled volute parts is increased, resonance is reduced, and the processing accuracy is improved. After confirming that the clamping is complete, the rotation of the quick-release handle one 511 is stopped, and the quick-release handle one 511 is removed.

[0052] Subsequently, the operator clamps the quick-release handle two 613 at the end of the screw two 612, turns the quick-release handle two 613 to make the screw two 612 rotate accordingly. The screw two 612 is in threaded engagement with the threaded sleeve two 611, so that the threaded sleeve two 611 pushes the push plate two 610 to move downward inside the oil barrel two 69, enabling the oil to enter the inside of the installation pipe 3 through the pipeline. The oil passes through the oil holes 63 on the installation plate 61, pushing the piston plate two 64 to move upward outside the support rod 62. Since the installation ring 68 is fixedly installed outside the support rod 62, as the piston plate two 64 moves upward, the four groups of connecting plates one 65 rotate at the top of the piston plate two 64. At the same time, the connecting plates two 67 connected to the outside of the installation ring 68 rotate, causing the support blocks 66 where the corresponding connecting plates one 65 and connecting plates two 67 are connected to move towards the position close to the inner wall of the volute, clamping the inner wall of the volute. This avoids the lack of support force inside the volute and excessive vibration during the machining of the outer wall, which may affect the machining accuracy. At the same time, it avoids damage to the machining tool caused by excessive vibration. After confirming that the clamping is complete, stop rotating the quick-release handle two 613, remove the quick-release handle two 613. When machining the outer surface and the end of the volute, by replacing the dust cover 680 of the corresponding size on the support rod 62, the machining debris will not enter the inner hole of the volute, avoiding the vibration of the volute caused by the accumulation of debris in the inner hole position, which may affect the machining accuracy of the volute. At the same time, it avoids scratches caused by excessive debris during the machining of thin-walled volute parts.

[0053] The present invention covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0054] The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A clamping tool for clamping special-shaped parts, characterized in that: It includes a base, a slide rail is arranged at the top of the base, a mounting tube is nested and installed at the center of the base, and support seats are installed at equal angles at the top of the base; It also includes an outer clamping assembly, which is installed on one side of the support seat and is used to clamp the outer side of the part; An inner clamping assembly, the inner clamping assembly is mounted on the top of the base, and the inner clamping assembly is used to clamp the inner side of the part; A port fixing assembly, the port fixing assembly is installed on the inner side of the slide rail, and the port fixing assembly is used to clamp and fix the port position of the part; The support seat is provided with three groups, the outer clamping assembly is installed on the outer side of the inner clamping assembly, and the port fixing assembly is located on one side of the mounting tube; The outer clamping assembly includes a piston cylinder 1, which is installed on one side of the support seat, a piston plate 1 is nested and installed inside the piston cylinder 1, and the piston plate 1 slides inside the piston cylinder 1, and an elastic metal plate is connected to the end of the piston cylinder 1; One side of the elastic metal plate is connected with elastic telescopic rods distributed evenly, and three groups of the elastic telescopic rods are evenly distributed and installed, and each group of elastic telescopic rods is evenly distributed and provided with a plurality of elastic telescopic rods, and the end of each elastic telescopic rod is connected with a contact head, and the outer side of the piston cylinder 1 is connected with a limit frame, and each contact head slides on the inner side of the limit frame respectively; In the initial state, there is oil inside the piston cylinder 1. When working, the piston plate 1 moves, and the piston plate 1 pushes the oil inside the piston cylinder 1 toward the elastic metal plate to squeeze it, causing the elastic metal plate made of titanium alloy to deform.

2. The clamping tool for clamping special-shaped parts according to claim 1 is characterized in that: One side of the piston cylinder is connected to an oil barrel through a pipeline, a push plate is nested on the inner side of the oil barrel, the push plate slides on the inner side of the oil barrel, the oil barrel is nested on the inner side of the base, the end of the push plate is connected to a threaded sleeve, the inner side thread of the threaded sleeve is engaged with a screw, the screw is nested on the inner side of the oil barrel, one end of the screw is installed through the oil barrel, and the end of the screw is connected to a quick-release handle.

3. The clamping tool for clamping special-shaped parts according to claim 2 is characterized in that: The inner clamping assembly includes a mounting plate, which is mounted on the inner side of the mounting tube. A support rod is connected to the top of the mounting plate. Four groups of oil holes are arranged at equal angles on the surface of the mounting plate. A piston plate 2 is sleeved on the outer side of the support rod. The piston plate 2 slides on the inner side of the mounting tube.

4. The clamping tool for clamping special-shaped parts according to claim 3 is characterized in that: Four groups of connecting plates 1 are arranged at equal angles on the top of the piston plate 2, and the connecting plates 1 rotate on the top of the piston plate 2 respectively. The ends of the four groups of connecting plates 1 are connected to support blocks respectively, and one side of the four groups of support blocks is connected to connecting plates 2 respectively. The connecting plates 2 rotate on one side of the support blocks respectively. The four groups of connecting plates 2 are connected to mounting rings, and the connecting plates 2 rotate on the outside of the mounting ring. The mounting ring is sleeved on the outside of the support rod. A dust cover is installed on the top of the mounting ring, and the dust cover is sleeved on the outside of the support rod.

5. The clamping tool for clamping special-shaped parts according to claim 4 is characterized in that: The bottom end of the mounting plate is connected to an oil barrel 2 through a pipeline, and the oil barrel 2 is nested and installed on the inner side of the base, and a push plate 2 is nested and installed on the inner side of the oil barrel 2, and a threaded sleeve 2 is connected to the end of the push plate 2, and a screw rod 2 is engaged with the inner thread of the threaded sleeve 2, and the screw rod 2 is nested and installed on the inner side of the oil barrel 2, and one end of the screw rod 2 passes through the oil barrel 2 for installation, and a quick-release handle 2 is connected to the end of the screw rod 2.

6. The clamping tool for clamping special-shaped parts according to claim 5, characterized in that: The port fixing assembly includes a slider, which is installed on the inner side of the slide rail and slides on the inner side of the slide rail. Two groups of mounting rods are symmetrically installed on the inner side of the slider, and the ends of the mounting rods are connected to fixed plates. The outer side of the mounting rods is provided with a sliding sleeve, and the end of the sliding sleeve is connected to a sliding plate. One side of the fixed plate is connected to piston cylinder 2, and piston plate 3 is nested and installed on the inner side of piston cylinder 2, and piston plate 3 slides on the inner side of piston cylinder 2.

7. The clamping tool for clamping special-shaped parts according to claim 6, characterized in that: The end of the piston plate three is connected with a piston rod, the piston rod is installed through the piston cylinder two, the tail end of the piston rod is connected with the sliding plate, the piston cylinder two is connected with the oil barrel three through a pipeline, the oil barrel three is installed on the inner side of the sliding block, and the push plate three is nested on the inner side of the oil barrel three.

8. The clamping tool for clamping special-shaped parts according to claim 7, characterized in that: The push plate three slides on the inner side of the oil barrel three, and a threaded sleeve three is connected to one side of the push plate three. The inner side thread of the threaded sleeve three is engaged with a screw rod three. The screw rod three is nested and installed on the inner side of the oil barrel three. One end of the screw rod three penetrates the oil barrel three for installation, and the end of the screw rod three is connected to a quick-release handle three.

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