Clamping tool for clamping special-shaped parts

Abstract

The invention provides a clamping tool for clamping special-shaped parts, and belongs to the technical field of part machining. Comprising a base, a sliding rail is arranged at the top end of the base, a mounting pipe is nested in the center of the base, and supporting seats are distributed at the top end of the base at equal angles. According to the clamp, the outer side clamping assembly is arranged, an elastic metal plate deforms under the action of oil, three sets of contact heads can be tightly attached to the contact face of a volute blank for clamping, self-adaptive clamping can be conducted on the clamping position according to the shape of the blank when volute type special-shaped parts are machined, operation of operators is facilitated, and the machining efficiency is improved. The thin-wall volute part milling device can be suitable for clamping volutes of different shapes, and through continuous mutual contact between oil and the elastic metal plate, vibration force in the thin-wall volute part milling process is weakened, resonance is reduced, the machining precision is improved, and the situation that the machined surface is oval is avoided.

Description

Technical Field

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

[0002] Special-shaped parts refer to parts with irregular shapes and complex structures. Special-shaped parts are usually irregular in shape and may contain complex surfaces, curves and asymmetric structures, which makes their design and manufacturing difficult. Among them, volute products have different diameters, and the diameters vary greatly, and the shape of the internal cavity is not uniform.

[0003] Existing volute clamping usually uses a chuck fixture in conjunction with a pressure plate to clamp the volute. Since the shape of the volute is not a perfect circle but a spiral, the operator needs to perform multiple clamping and alignment. When meeting different sizes and different processing inner cavity requirements, the clamping position needs to be readjusted. The operation is complicated and time-consuming, and it cannot provide multi-directional support for thin-walled parts such as volutes during processing. It is easy to resonate through vibration, and the volute port is easy to be displaced, affecting the processing accuracy. At the same time, when processing the inner end of the volute, the inner hole of the volute is easy to accumulate processing debris, which can easily cause the debris to resonate with the volute in the inner hole, easily scratch the inner wall of the volute, affect the smoothness of the processed surface, and easily cause increased wear of the processing tool. Therefore, the present application provides a clamping tool for clamping special-shaped parts to meet the needs. 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 existing problem that when different sizes and different processing inner cavities are required, the clamping position needs to be readjusted, the operation is complicated, and it takes a long time, and it is impossible to provide multi-directional support force for thin-walled parts such as volutes during processing. It is easy to resonate through vibration, affecting the processing accuracy. When processing the inner end of the volute, the inner hole of the volute is easy to accumulate processing debris, which is easy to cause the debris to resonate with the volute in the inner hole, easily scratch the inner wall of the volute, affect the smoothness of the processed surface, and easily cause increased wear of the processing tool.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A clamping tool for clamping special-shaped parts, comprising a base, a slide rail is provided on the top of the base, a mounting tube is nested and installed in the center of the base, and a support seat is installed at an equal angle on the top of the base; it also includes an outer clamping assembly, the outer clamping assembly is installed on one side of the support seat, and the outer clamping assembly is used to clamp the outside of the part; an inner clamping assembly, the inner clamping assembly is installed on the top of the base, and the inner clamping assembly is used to clamp the inside 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 outside of the inner clamping assembly, and the port fixing assembly is located on one side of the mounting tube.

[0006] Optionally, 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 on the inner side of the piston cylinder 1, the piston plate 1 slides on the inner side of the piston cylinder 1, and an elastic metal plate is connected to the end of the piston cylinder 1.

[0007] Optionally, one side of the elastic metal plate is evenly connected with elastic telescopic rods, and three groups of the elastic telescopic rods are evenly installed. Each group of elastic telescopic rods is evenly distributed and has a number of elastic telescopic rods. The end of each elastic telescopic rod is connected to a contact head, and the outer side of the piston cylinder is connected to a limit frame, and each of the contact heads slides on the inner side of the limit frame.

[0008] Optionally, 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.

[0009] Optionally, the inner clamping assembly includes a mounting plate, which is mounted on the inner side of the mounting tube, the top of the mounting plate is connected to a support rod, four groups of oil holes are arranged at equal angles on the surface of the mounting plate, and a piston plate 2 is sleeved on the outer side of the support rod, and the piston plate 2 slides on the inner side of the mounting tube.

[0010] Optionally, 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, and the ends of the four groups of connecting plates 1 are respectively connected to support blocks, and one side of the four groups of support blocks is respectively connected to connecting plates 2, and the connecting plates 2 rotate on one side of the support blocks respectively, and 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, and the mounting ring is sleeved on the outside of the support rod, and 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.

[0011] Optionally, 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 the end of the push plate 2 is connected to a threaded sleeve 2, and the inner side thread of the threaded sleeve 2 is engaged with a screw rod 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 the end of the screw rod 2 is connected to a quick-release handle 2.

[0012] Optionally, 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.

[0013] Optionally, the end of the piston plate three is connected to a piston rod, the piston rod is installed through the piston cylinder two, the tail end of the piston rod is connected to the sliding plate, the piston cylinder two is connected to 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.

[0014] Optionally, 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 is installed through the oil barrel three, and the end of the screw rod three is connected to a quick-release handle three.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting an outer clamping component, the elastic metal plate is deformed under the action of oil, so that the three groups of contact heads can clamp tightly 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, which is convenient for operators to operate and can be suitable for clamping volutes of different shapes. Moreover, through the continuous contact between the oil and the elastic metal plate, the vibration force during the milling process of thin-walled volute parts is weakened, the resonance is reduced, the processing accuracy is improved, and the occurrence of elliptical processing surface is avoided.

[0016] By setting up an inner clamping assembly and using oil to push the matching connecting plate 1 and connecting plate 2, the support block supports the inner wall of the volute. When processing thin-walled volute parts, the clamping tooling can provide multi-directional clamping support force to the volute parts, thereby reducing processing vibration, improving processing accuracy, avoiding overcutting caused by vibration, and reducing the generation of scrapped parts.

[0017] By setting up a port fixing component, the volute port is clamped by using oil to drive the movable plate and the fixed plate, the port position is positioned, and the clamping of the outer clamping component and the inner clamping component is assisted in positioning. At the same time, supporting force is provided for the port to prevent the volute port from being subjected to excessive vibration force during processing, resulting in offset deformation.

[0018] By setting a dust cover and replacing the dust cover of corresponding size and putting it on the support rod, processing debris will not enter the inner hole of the volute, thus avoiding the accumulation of debris at the inner hole to cause vibration to the volute, and avoiding excessive scratches on thin-walled volute parts during processing, resulting in low processing accuracy of the volute, and reducing vibration wear on the processing tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a clamping tool for clamping special-shaped parts; Figure 2 It is a sectional view of the three-dimensional structure of the clamping tool used for clamping special-shaped parts; Figure 3 It is a schematic diagram of the three-dimensional structure of the outer clamping assembly; Figure 4 for Figure 3 A is an enlarged schematic diagram of the three-dimensional structure; Figure 5 It is a schematic diagram of the three-dimensional structure of the piston cylinder, the contact head and the limit frame assembly; Figure 6A schematic diagram of a three-dimensional structure of an elastic metal plate, an elastic telescopic rod and a contact head assembly; Figure 7 It is a schematic diagram of the three-dimensional structure of the piston plate 1 and the support seat assembly; Figure 8 It is a schematic diagram of the three-dimensional structure of the inner clamping assembly; Fig. 9 A schematic diagram of the three-dimensional structure of the mounting tube and the inner clamping assembly; Fig.10 It is a schematic diagram of the three-dimensional structure of the port fixing component; Fig.11 A schematic diagram of the three-dimensional structure of the mounting rod, the fixing plate, the sliding sleeve and the sliding plate; Fig.12 It is a cross-sectional view of the three-dimensional structure of the inner side of the piston cylinder.

[0021] Reference numerals: 1. Base; 2. Slide rail; 3. Mounting tube; 4. Support seat; 5. Outer clamping assembly; 51. Piston cylinder 1; 52. Piston plate 1; 53. Elastic metal plate; 54. Elastic telescopic rod; 55. Contact head; 56. Limiting frame; 57. Oil barrel 1; 58. Push plate 1; 59. Threaded sleeve 1; 510. Screw 1; 511. Quick release handle 1; 6. Inner clamping assembly; 61. Mounting plate; 62. Support rod; 63. Oil hole; 64. Piston plate 2; 65. Connecting plate 1; 66. Support block; 67. 7. Connecting plate 2; 68. Mounting ring; 680. Dust cover; 69. Oil barrel 2; 610. Push plate 2; 611. Threaded sleeve 2; 612. Screw rod 2; 613. Quick-release handle 2; 7. Port fixing assembly; 71. Sliding block; 72. Mounting rod; 720. Fixing plate; 73. Sliding sleeve; 74. Sliding plate; 75. Piston cylinder 2; 76. Piston plate 3; 77. Piston rod; 78. Oil barrel 3; 79. Push plate 3; 710. Threaded sleeve 3; 711. Screw rod 3; 712. Quick-release handle 3.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0023] The following is a detailed description of 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 is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0024] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0025] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0026] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0027] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0028] like Figures 1 to 12As shown, an embodiment of the present invention provides a clamping tool for clamping special-shaped parts, including a base 1, a slide rail 2 is arranged at the top of the base 1, a mounting tube 3 is nested and installed in the center of the base 1, a support seat 4 is installed at the top of the base 1 at equal angles, and also includes an outer clamping assembly 5, the outer clamping assembly 5 is installed on one side of the support seat 4, the outer clamping assembly 5 is used to clamp the outside of the part, an inner clamping assembly 6, the inner clamping assembly 6 is installed at the top of the base 1, the inner clamping assembly 6 is used to clamp the inside of the part, a port fixing assembly 7, the port fixing assembly 7 is installed on the inner side of the slide rail 2, the port fixing assembly 7 is used to clamp and fix the port position of the part, the support seat 4 is provided with three groups, the outer clamping assembly 5 is installed on the outside of the inner clamping assembly 6, and the port fixing assembly 7 is located on one side of the mounting tube 3.

[0029] like Figures 3 to 7 As shown, the outer clamping assembly 5 includes a piston cylinder 51, which is installed on one side of the support seat 4. A piston plate 52 is nested on the inner side of the piston cylinder 51, and the piston plate 52 slides on the inner side of the piston cylinder 51. An elastic metal plate 53 is connected to the end of the 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 position between the elastic metal plate 53 and the inner wall of the piston cylinder 51. Elastic telescopic rods 54 are equidistantly connected to one side of the elastic metal plate 53. Three groups of elastic telescopic rods 54 are equidistantly installed. Each group of elastic telescopic rods 54 is equidistantly arranged. A contact head 55 is connected to the end of each elastic telescopic rod 54. The contact head 55 is made of nickel-aluminum alloy material, and the end of the contact head 55 is set to be semicircular. The outer side of 51 is connected to a limit frame 56, and each contact head 55 slides on the inner side of the limit frame 56 respectively. One side of the piston cylinder 51 is connected to the oil barrel 57 through a pipeline. A push plate 58 is nested on the inner side of the oil barrel 57. The push plate 58 slides on the inner side of the oil barrel 57. The oil barrel 57 is nested on the inner side of the base 1. The end of the push plate 58 is connected to a threaded sleeve 59. The inner side thread of the threaded sleeve 59 is meshed with a screw 510. The screw 510 is nested on the inner side of the oil barrel 57. One end of the screw 510 penetrates the oil barrel 57 for installation. One end of the screw 510 is installed on the side wall of the oil barrel 57 through a bearing and an oil seal to ensure that the screw 510 can rotate normally. The end of the screw 510 is connected to a quick-release handle 511; By setting the outer clamping component 5, the operator clamps the quick-release handle 511 on the end of the screw 510, rotates the quick-release handle 511, drives the screw 510 to rotate, and the threaded sleeve 59 is threadedly engaged with the screw 510 to drive the push plate 58 to move downward on the inner side of the oil barrel 57, so that the push plate 58 pushes the oil to enter the inner side of the three groups of piston cylinders 51 through the pipeline, so that the piston plate 52 moves (in the initial state, there is oil on the inner side of the piston cylinder 51), and the piston plate 52 pushes the oil in the piston cylinder 51 toward the elastic metal plate 53 to squeeze it, so that the elastic metal plate 53 made of titanium alloy is deformed, and the elastic telescopic rod 54 drives the corresponding contact head 55 to contact the outer side wall of the volute blank. The shape is an arc shape, and the three groups of contact heads 55 have different contact heights. The three groups of contact heads 55 slide on the inner side of the limit frame 56 respectively, and generate different extrusion pressures on the corresponding elastic telescopic rods 54. At this time, the deformation bending shape of the elastic metal plate 53 is the same as the contact surface shape of the three groups of contact heads 55 on the volute blank, and the volute blank is clamped, so that when processing volute-like special-shaped parts, the clamping position can be adaptively clamped according to the shape of the blank, and it can be suitable for clamping volutes of different shapes. During processing, the oil continues to contact the elastic metal plate 53, so as to reduce the vibration force during the milling process of the thin-walled volute parts, increase the stability of the thin-walled volute parts, reduce resonance, and improve processing accuracy. After confirming that the clamping is complete, stop rotating the quick-release handle 511 and remove the quick-release handle 511.

[0030] like Figures 8 to 9As shown, the inner clamping assembly 6 includes a mounting plate 61, which is mounted on the inner side of the mounting tube 3. A support rod 62 is connected to the top of the mounting plate 61. Four groups of oil holes 63 are arranged at equal angles on the surface of the mounting plate 61. A piston plate 2 64 is sleeved on the outer side of the support rod 62. The piston plate 2 64 slides on the inner side of the mounting tube 3. Four groups of connecting plates 1 65 are arranged at equal angles on the top of the piston plate 2 64. The connecting plates 1 65 rotate on the top of the piston plate 2 64 respectively. The ends of the four groups of connecting plates 1 65 are connected to support blocks 66 respectively. One side of the four groups of support blocks 66 is connected to connecting plates 2 67 respectively. The connecting plates 2 67 rotate on one side of the support blocks 66 respectively. The four groups of connecting plates 2 67 are connected to mounting rings 68, and the connecting plates 2 67 rotate on the outer side of the mounting ring 68. The mounting The ring 68 is sleeved on the outer side of the support rod 62, and a dust cover 680 is installed on the top of the mounting ring 68. The dust cover 680 is sleeved on the outer side of the support rod 62. The bottom end of the mounting plate 61 is connected to the oil barrel 69 through a pipeline. The oil barrel 69 is nested and installed on the inner side of the base 1. The inner side of the oil barrel 69 is nested and installed with a push plate 610. The end of the push plate 610 is connected with a threaded sleeve 611. The inner side of the threaded sleeve 611 is meshed with a screw rod 612. The screw rod 612 is nested and installed on the inner side of the oil barrel 69. One end of the screw rod 612 penetrates the oil barrel 69 for installation. One end of the screw rod 612 is installed on the side wall of the oil barrel 69 through a bearing and an oil seal to ensure that the screw rod 612 can rotate normally. The end of the screw rod 612 is connected with a quick-release handle 613. By setting the inner clamping assembly 6, the operator then clamps the quick-release handle 2 613 on the end of the screw rod 2 612, rotates the quick-release handle 2 613 to make the screw rod 2 612 rotate accordingly, and the screw rod 2 612 is threadedly engaged with the threaded sleeve 2 611, so that the threaded sleeve 2 611 pushes the push plate 2 610 to move downward on the inner side of the oil barrel 2 69, so that the oil enters the inner side of the mounting tube 3 through the pipeline, and the oil passes through the oil hole 63 on the mounting plate 61, pushing the piston plate 2 64 to move upward on the outer side of the support rod 62. Since the mounting ring 68 is fixedly mounted on the outer side of the support rod 62, as the piston plate 2 64 moves upward, the four groups of connecting plates 1 65 rotate on the top of the piston plate 2 64, and at the same time, the connecting plate 2 67 connected to the outer side of the mounting ring 68 moves The quick-release handle 613 is rotated to move the corresponding supporting block 66 connected to the connecting plate 1 65 and the connecting plate 2 67 to a position close to the inner wall of the volute, so as to clamp the inner wall of the volute to avoid lack of supporting force on the inner side of the volute when processing the outer wall, resulting in excessive vibration and affecting the processing accuracy, and at the same time avoiding damage to the processing tool caused by excessive vibration. After confirming that the clamping is complete, stop rotating the quick-release handle 2 613 and remove the quick-release handle 2 613. When processing the outer surface and end of the volute, replace the dust cover 680 of the corresponding size on the support rod 62 to prevent processing debris from entering the inner hole position of the volute, avoiding the accumulation of debris at the inner hole position to vibrate the volute, affecting the processing accuracy of the volute, and avoiding scratches caused by excessive debris during processing of thin-walled volute parts.

[0031] like Figures 10 to 12As shown, the port fixing assembly 7 includes a slider 71, which is installed on the inner side of the slide rail 2. The slider 71 slides on the inner side of the slide rail 2. Two groups of mounting rods 72 are symmetrically installed on the inner side of the slider 71. The ends of the mounting rods 72 are connected to a fixing plate 720. A sliding sleeve 73 is sleeved on the outer side of the mounting rod 72. The end of the sliding sleeve 73 is connected to a sliding plate 74. One side of the fixing plate 720 is connected to a piston cylinder 2 75. An air outlet is provided at the end of the piston cylinder 2 75. A piston plate 3 76 is nested and installed on the inner side of the piston cylinder 2 75. The piston plate 3 76 slides on the inner side of the piston cylinder 2 75. The end of the piston plate 3 76 is connected to a piston rod 77. The piston rod 77 penetrates the piston cylinder 2 75 for installation. The tail end of the piston rod 77 Connected with the sliding plate 74, the piston cylinder 2 75 is connected with the oil barrel 3 78 through a pipeline, the oil barrel 3 78 is installed on the inner side of the sliding block 71, and a push plate 3 79 is nested and installed on the inner side of the oil barrel 3 78. The push plate 3 79 slides on the inner side of the oil barrel 3 78. One side of the push plate 3 79 is connected with a threaded sleeve 3 710, and the inner side thread of the threaded sleeve 3 710 is meshed with a screw rod 3 711. The screw rod 3 711 is nested and installed on the inner side of the oil barrel 3 78. One end of the screw rod 3 711 penetrates the oil barrel 3 78 for installation, and one end of the screw rod 3 711 is installed on the side wall of the oil barrel 3 78 through a bearing and an oil seal to ensure that the screw rod 3 711 can rotate normally. The end of the screw rod 3 711 is connected with a quick-release handle 3 712; 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 aligns the fixing plate 720 with the horn port position of the volute. The operator clamps the quick-release handle 3 712 on the end of the screw rod 3 711 and rotates it. The screw rod 3 711 is threadedly engaged with the threaded sleeve 3 710, so that the threaded sleeve 3 710 drives the push plate 3 79 to move and squeeze the oil on the inner side of the oil barrel 3 78, so that the oil enters the inner side of the piston cylinder 2 75 through the pipeline, and the push plate 3 79 is pushed. The piston plate three 76 is moved, and 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, so that the piston rod 77 drives the sliding plate 74 to move, and the sliding sleeve 73 performs auxiliary sliding on the outside of the mounting rod 72, so that the sliding plate 74 pushes the trumpet port of the volute to contact with the fixed plate 720 on the opposite side of the trumpet port of the volute, and the sliding plate 74 clamps the trumpet port of the volute, and then stops rotating the quick release handle three 712 after confirming that the clamping is complete, and removes the quick release handle three 712.

[0032] The working principle of the technical solution provided by the present invention is as follows: When the operator performs milling processing on a special-shaped part such as a volute, the operator first places the clamping tool on the cleaned workbench, uses a special gauge to level the workbench, and then uses bolts and a pressure plate to fix the base 1. Then, the volute blank is placed on top of the base 1, and the dust cover 680 is first pulled off 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 aligns the fixing plate 720 with the horn port position of the volute. The operator clamps the quick-release handle 3 712 on the end of the screw 3 711 and rotates it. The screw 3 711 is threadedly engaged with the threaded sleeve 3 710 to make the thread The sleeve three 710 drives the push plate three 79 to move on the inner side of the oil barrel three 78 to squeeze the oil, so that the oil enters the inner side of the piston cylinder two 75 through the pipeline, and pushes 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, so that the piston rod 77 drives the sliding plate 74 to move, and the sliding sleeve 73 performs auxiliary sliding on the outer side of the mounting rod 72, so that the sliding plate 74 pushes the trumpet port of the volute to contact the fixed plate 720 on the opposite side of the trumpet port of the volute, and the sliding plate 74 clamps the trumpet port of the volute, and then stops rotating the quick release handle three 712 after confirming that the clamping is complete, and removes the quick release handle three 712.

[0033] The operator clamps the quick-release handle 511 on the end of the screw 510, rotates the quick-release handle 511, drives the screw 510 to rotate, and the threaded sleeve 59 is threadedly engaged with the screw 510, drives the push plate 58 to move downward on the inner side of the oil barrel 57, so that the push plate 58 pushes the oil to enter the inner side of the three groups of piston cylinders 51 through the pipeline, and moves the piston plate 52 (in the initial state, there is oil on the inner side of the piston cylinder 51), and the piston plate 52 pushes the oil in the piston cylinder 51 toward the elastic metal plate 53 to squeeze it, so that the elastic metal plate 53 made of titanium alloy is deformed, and the elastic telescopic rod 54 drives the corresponding contact head 55 to contact the outer side wall of the volute blank. Since the outer side wall of the volute blank is in the shape of an arc, The three groups of contact heads 55 have different contact heights, and the three groups of contact heads 55 slide on the inner side of the limit frame 56 respectively, and generate different extrusion pressures on the corresponding elastic telescopic rods 54. At this time, the deformed bending shape of the elastic metal plate 53 is the same as the contact surface shape of the three groups of contact heads 55 on the volute blank, so the volute blank is clamped, so that when processing volute-like special-shaped parts, the clamping position can be adaptively clamped according to the shape of the blank, and it can be suitable for clamping volutes of different shapes. During processing, the oil continues to contact the elastic metal plate 53, so 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, the 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.

[0034] Subsequently, the operator clamps the quick-release handle 613 on the end of the screw rod 612, turns the quick-release handle 613 to make the screw rod 612 rotate accordingly, and the screw rod 612 is threadedly engaged with the threaded sleeve 611, so that the threaded sleeve 611 pushes the push plate 610 to move downward inside the oil barrel 69, so that the oil enters the inside of the mounting tube 3 through the pipeline, and the oil passes through the oil hole 63 on the mounting plate 61, pushing the piston plate 64 to move upward on the outside of the support rod 62. Since the mounting ring 68 is fixedly installed on the outside of the support rod 62, as the piston plate 64 moves upward, the four sets of connecting plates 1 65 rotate on the top of the piston plate 64, and at the same time, the connecting plate 67 connected to the outside of the mounting ring 68 rotates. The corresponding support block 66 connected to the connecting plate 1 65 and the connecting plate 2 67 moves to a position close to the inner wall of the volute to clamp the inner wall of the volute to avoid lack of support force on the inner side of the volute when processing the outer wall, resulting in excessive vibration and affecting the processing accuracy. At the same time, it is also possible to avoid damage to the processing tool caused by excessive vibration. After confirming that the clamping is complete, stop rotating the quick-release handle 2 613 and remove the quick-release handle 2 613. When processing the outer surface and end of the volute, replace the dust cover 680 of the corresponding size on the support rod 62 to prevent processing debris from entering the inner hole position of the volute, thereby avoiding the accumulation of debris at the inner hole position to vibrate the volute, affecting the processing accuracy of the volute, and avoiding scratches caused by excessive debris during processing of thin-walled volute parts.

[0035] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection 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.

2. The clamping tool for clamping special-shaped parts according to claim 1 is characterized in that: 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 on the inner side of the piston cylinder 1. The piston plate 1 slides on the inner side of the piston cylinder 1, and an elastic metal plate is connected to the end of the piston cylinder 1.

3. The clamping tool for clamping special-shaped parts according to claim 2 is characterized in that: One side of the elastic metal plate is evenly connected with elastic telescopic rods, and three groups of elastic telescopic rods are evenly installed. Each group of elastic telescopic rods is evenly distributed and arranged with a number of elastic telescopic rods. The end of each elastic telescopic rod is connected with a contact head, and the outer side of the piston cylinder is connected with a limiting frame, and each contact head slides on the inner side of the limiting frame respectively.

4. The clamping tool for clamping special-shaped parts according to claim 3 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.

5. The clamping tool for clamping special-shaped parts according to claim 4 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.

6. The clamping tool for clamping special-shaped parts according to claim 5, 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.

7. The clamping tool for clamping special-shaped parts according to claim 6, 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.

8. The clamping tool for clamping special-shaped parts according to claim 7, 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.

9. The clamping tool for clamping special-shaped parts according to claim 8, 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.

10. The clamping tool for clamping special-shaped parts according to claim 9, 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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