A fixture device for clamping and positioning a large thin-walled structural member

Abstract

The application discloses a clamping positioning tool device for large thin-wall structural members, comprising a workbench, a hydraulic pipeline, oil distribution blocks, a multi-hole plate, a main oil path, a hydraulic clamping unit, functional columns and a detection tool, the multi-hole plate is arranged on the workbench, a plurality of groups of uniformly distributed holes are arranged on the multi-hole plate and used for connecting the functional columns and the workbench, the main oil path is installed on the workbench, a plurality of the oil distribution blocks and the hydraulic pipeline are arranged at the side of the workbench, the hydraulic pipeline comprises a hydraulic hose and a hydraulic hard pipe, the main oil path is connected to the oil distribution blocks through the hydraulic hard pipe, the oil distribution blocks are connected to the hydraulic clamping unit through the hydraulic hose, the hydraulic clamping unit is connected to the corresponding functional columns, the functional columns comprise end columns, tail columns, lateral columns and auxiliary support columns, can adapt to the clamping requirements of multiple types of products and save a large amount of manufacturing cost and storage cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automatic matching equipment, and particularly relates to a tool device for clamping and positioning of large thin-walled structural parts. BACKGROUND

[0002] In the technical field of engineering machinery, automatic equipment, etc., large thin-walled structural parts are used on high-altitude working machinery, cranes, pump machinery and other engineering machinery equipment; the conventional cutting machining clamps of the parts are mostly one-to-one and used by a single machine, and such clamps cannot adapt to the clamping requirements of multiple types of products. Therefore, different cutting machining clamps need to be involved for different products, and a large number of cutting machining clamps not only occupy space, but also greatly increase the design and manufacturing costs. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a tool device for clamping and positioning of large thin-walled structural parts, which can adapt to the clamping requirements of multiple types of products and save a large amount of manufacturing and storage costs.

[0004] To achieve the above purpose, the present application adopts the following technical scheme: a tool device for clamping and positioning of large thin-walled structural parts, comprising a workbench, a hydraulic pipeline, an oil distribution block, a multi-hole plate, a main oil path, a hydraulic clamping unit, a functional column and a detection tool, the multi-hole plate is arranged on the workbench, a plurality of groups of uniformly distributed holes are provided on the multi-hole plate for connection of the functional column and the workbench, the main oil path is installed on the workbench, a plurality of the oil distribution blocks and the hydraulic pipeline are arranged at the side of the workbench, the hydraulic pipeline comprises a hydraulic hose and a hydraulic hard pipe, the main oil path is connected to the oil distribution block through the hydraulic hard pipe, the oil distribution block is connected to the hydraulic clamping unit through the aforementioned hydraulic hose, the hydraulic clamping unit is connected to the corresponding functional column, the functional column comprises an end column, a tail column, a lateral column and an auxiliary support column,

[0005] The hydraulic clamping unit comprises an end clamping cylinder module, a side clamping cylinder module, a main clamping cylinder module, an auxiliary support cylinder module and an auxiliary clamping cylinder module, and the oil return of all the above-mentioned cylinders is communicated with the oil return path;

[0006] The end column comprises an end bottom column, an end adjusting bottom plate, an end top column, an end equal-height seat and an end supporting screw rod, the end adjusting bottom plate is mounted on the end bottom column, the end top column, the end equal-height seat and the end supporting screw rod are all mounted on the end adjusting bottom plate, the end adjusting bottom plate is provided with a plurality of through holes for adjusting the positions of the end top column, the end equal-height seat and the end supporting screw rod, the end equal-height seat is mounted on the center line of the end adjusting bottom plate, and the end equal-height seat is provided with the end supporting screw rod on both sides, the same side of the end supporting screw rod and the end equal-height seat is provided with three end top columns, the middle end top column is connected with an end clamping oil cylinder module, and the two side end top columns are connected with main clamping oil cylinder modules;

[0007] The tail column comprises two side tail columns and one middle tail column, the side tail column comprises a side bottom column, a side middle column, a side top column, a side supporting screw rod and a main clamping oil cylinder module, the side middle column is connected to the side bottom column, the side top column is connected to the side middle column, one side of the side top column is provided with the side supporting screw rod, and the top of the side top column is provided with the main clamping oil cylinder module, the side tail column comprises a side tail bottom column, a side tail adjusting bottom plate, a side tail equal-height seat and a side tail end positioning mechanism, the side tail adjusting bottom plate is mounted on the side tail bottom column, the side tail equal-height seat and the side tail end positioning mechanism are mounted on the side tail adjusting bottom plate, the side tail adjusting bottom plate is provided with a plurality of through holes for adjusting the positions of the side tail equal-height seat and the side tail end positioning mechanism;

[0008] The side column comprises a column body, a guide block and a positioning screw rod, the positioning screw rod is horizontally mounted on one side of the column body, the column body is provided with a groove in which the positioning screw rod slides up and down, and a vertical guide block is mounted on the column body opposite to the positioning screw rod;

[0009] The auxiliary support column comprises two side auxiliary support columns and one end auxiliary support column, the side auxiliary support column comprises a side auxiliary support column body, the end auxiliary support column comprises an auxiliary support bottom column, an auxiliary support middle column and an auxiliary support top column, the auxiliary support middle column is connected to the auxiliary support bottom column, the auxiliary support top column is connected to the auxiliary support middle column, an auxiliary clamping cylinder is arranged at the top of the side auxiliary support column and the auxiliary support top column, and an auxiliary supporting cylinder corresponding to the auxiliary clamping cylinder is arranged on the side surface of the side auxiliary support column and the auxiliary support top column;

[0010] The detection tool is used for detecting whether the machining position meets the machining requirement after the workpiece is clamped.

[0011] In the above technical scheme, the oil distribution block comprises an oil distribution block body, a quick connector and a common connector, one end of a hydraulic hose is connected to the oil distribution block through the quick connector, and the common connector is connected to a main oil path through a hydraulic hard pipe.

[0012] In the technical scheme, the hydraulic hose is provided with a metal sheath.

[0013] In the technical scheme, the perforated plate comprises two side perforated plates and a middle perforated plate, and the two side perforated plates are installed on the two sides of the middle perforated plate.

[0014] In the technical scheme, the holes on the perforated plate are all M24 threaded through holes, and numbers are arranged on the holes.

[0015] In the technical scheme, the main oil path comprises a main quick connector, a pressure gauge and a main oil path block, the main oil path block is connected to the hydraulic station, a plurality of main quick connectors are installed on the main oil path block, a pressure gauge is connected to the pipeline of each main quick connector, and the lower portion of the main oil path block is connected to the oil distribution path block.

[0016] In the technical scheme, an accumulator is connected to the pipeline of each main quick connector.

[0017] In the technical scheme, an oil receiving disc is arranged below the main quick connector, and the oil receiving disc is connected to the main oil path block.

[0018] In the technical scheme, a protective cover is connected to the main oil path block, and the protective cover covers the accumulator and the pressure gauge.

[0019] The beneficial effects of the present application are: the device adopts modular design, according to the characteristics of the product, the function modules are adjusted, arranged and combined, and installed in the corresponding position, which can meet the clamping and positioning requirements of products of the same type and different specifications. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the general assembly structure schematic diagram of the present application;

[0021] Figure 2 is the hydraulic oil path schematic diagram of the present application;

[0022] Figure 3 is the perforated plate and function column layout schematic diagram of the present application;

[0023] Figure 4 is the oil distribution path block schematic diagram of the present application;

[0024] Figure 5 is the main oil path schematic diagram of the present application;

[0025] Figure 6 is the end column schematic diagram of the present application;

[0026] Figure 7 is the tail column schematic diagram of the present application;

[0027] Figure 8 is the schematic diagram of auxiliary support column of the present application;

[0028] Figure 9 is the schematic diagram of lateral column of the present application.

[0029] 01, workbench;

[0030] 02, hydraulic pipeline; 0201, hydraulic hard pipe; 0202, hydraulic hose;

[0031] 03, oil distribution block; 0301, oil block body; 0302, quick connector; 0303, ordinary connector;

[0032] 04, perforated plate; 0401, edge perforated plate; 0402, middle perforated plate;

[0033] 05, main oil path; 0501, protective cover; 0502, main quick connector; 0503, accumulator; 0504, pressure gauge; 0505, main oil block; 0506, oil receiving disc;

[0034] 06, hydraulic clamping unit; 0601, end clamping cylinder module; 0602, side clamping cylinder module; 0603, main clamping cylinder module; 0604, auxiliary support cylinder module; 0605, auxiliary clamping cylinder module;

[0035] 07, functional column; 0701, end column; 070101, end bottom column; 070102, end adjustment bottom plate; 070103, end top column; 070104, end equal-height seat; 070105, end support screw;

[0036] 0702, tail column; 070201, side edge bottom column; 070202, side edge middle column; 070203, side edge top column; 070204, side edge support screw; 070205, side edge tail bottom column; 070206, side edge tail adjustment bottom plate; 070207, side edge tail equal-height seat; 070208, side edge tail end positioning mechanism;

[0037] 0703, lateral column; 070301, lateral column body; 070302, guide block; 070303, positioning screw;

[0038] 0704, auxiliary support column; 070401, side auxiliary support column body; 070402, auxiliary support bottom column; 070403, auxiliary support middle column; 070404, auxiliary support top column;

[0039] 08, detection tool; 09, workpiece. DETAILED DESCRIPTION

[0040] The application will be further described below in conjunction with the drawings and specific embodiments.

[0041] As Figure 1 shown, a tool device for clamping and positioning of large thin-walled structural parts, comprising a workbench 01, a hydraulic pipeline 02, 8 sets of oil distribution blocks 03, a multi-hole plate 04, a main oil path 05, a hydraulic clamping unit 06, a functional column 07 and a detection tool 08, the multi-hole plate 04 is arranged on the workbench 01, and the multi-hole plate 04 is provided with multiple groups of uniformly distributed holes for the connection of the functional column 07 and the workbench 01, the main oil path 05 is installed on the workbench 01, and the hydraulic pipeline 02 and the multiple sets of oil distribution blocks 03 are arranged at the side of the workbench 01, the hydraulic pipeline 02 comprises a hydraulic hose 0201 and a hydraulic hard pipe 0202, the main oil path 05 is connected to the oil distribution blocks 03 through the hydraulic hard pipe 0202, the oil distribution blocks 03 are connected to the hydraulic clamping unit 06 through the aforementioned hydraulic hose 0201, and the hydraulic clamping unit 06 is connected to the corresponding functional column 07, as Figure 3 shown, the functional column 07 comprises an end column 0701, a tail column 0702, a lateral column 0703 and an auxiliary support column 0704,

[0042] As Figure 2 shown, the hydraulic clamping unit 06 mainly comprises one set of end clamping cylinder modules 0601, two sets of side clamping cylinder modules 0602, four sets of main clamping cylinder modules 0603, three sets of auxiliary support cylinder modules 0604 and three sets of auxiliary clamping cylinder modules 0605,

[0043] As Figure 6 shown, the end column 0701 comprises an end bottom column 070101, an end adjustment bottom plate 070102, three sets of end top columns 070103, an end isometric seat 070104 and two sets of end support screws 070105, the end adjustment bottom plate 070102 is installed on the end bottom column 070101, the end top columns 070103, the end isometric seat 070104 and the end support screws 070105 are all installed on the end adjustment bottom plate, multiple through holes are arranged on the end adjustment bottom plate 070102 for adjusting the positions of the end top columns 070103, the end isometric seat 070104 and the end support screws 070105, the end isometric seat 070104 is installed on the center line of the end adjustment bottom plate, and the end isometric seat 070104 is provided with the end support screws 070105 on both sides, the same side of the end support screws 070105 and the end isometric seat 070104 is provided with three end top columns 070103, the middle end top column 070103 is connected with the end clamping cylinder module 0601, and the end top columns on both sides are connected with the main clamping cylinder module 0603;

[0044] As Figure 7 shown, the tail column 0702 includes two side tail columns and one middle tail column, the side tail column includes a side bottom column 070201, a side middle column 070202, a side top column 070203, a side support screw 070204 and a main clamping oil cylinder module 0603, the side bottom column 070201 is connected with the side middle column 070202, the side middle column 070202 is connected with the side top column 070203, one side of the side top column 070203 is provided with the side support screw 070204, and the top of the side top column 070203 is provided with the main clamping oil cylinder module 0603, the side tail column includes a side tail bottom column 070205, a side tail adjusting bottom plate 070206, a side tail equal-height seat 070207 and a side tail end positioning mechanism 070208, the side tail adjusting bottom plate 070206 is installed on the side tail bottom column 070205, the side tail equal-height seat 070207 and the side tail end positioning mechanism 070208 are installed on the side tail adjusting bottom plate 070206, the side tail adjusting bottom plate 070206 is provided with a plurality of through holes for adjusting the positions of the side tail equal-height seat 070207 and the side tail end positioning mechanism 070208;

[0045] As Figure 8 shown, the lateral column 0703 includes a lateral column body 070301 and a guide block 070302, the lateral column is provided with four groups, two lateral columns on the same side are provided with a positioning screw 070303, the positioning screw 070303 is horizontally installed on one side of the lateral column body 070301, the lateral column body 070301 is provided with a groove in which the positioning screw 070303 slides up and down, the lateral column body 070301 opposite to the positioning screw 070303 is installed with a vertical guide block 070302, and the other two lateral columns are connected with a side clamping oil cylinder module 0602;

[0046] As Figure 9As shown, the auxiliary support column 0704 includes two side auxiliary support columns and one end auxiliary support column, the side auxiliary support column includes a side auxiliary support column body 070401, the end auxiliary support column includes an auxiliary support bottom column 070402, an auxiliary support middle column 070403, and an auxiliary support top column 070404, the auxiliary support bottom column is connected to the auxiliary support middle column, and the auxiliary support middle column is connected to the auxiliary support top column, auxiliary clamping cylinder modules 0605 are arranged at the top of the side auxiliary support column body 070401 and the auxiliary support top column 070404, auxiliary support cylinder modules 0604 corresponding to the auxiliary clamping cylinder modules 0605 are arranged on the side of the side auxiliary support column body 070401 and the auxiliary support top column 070404, and the two groups of oil cylinders are correspondingly arranged and fixed in an up-down manner; the auxiliary support bottom column 070402, the auxiliary support middle column 070403, and the auxiliary support top column 070404 can be used in combination with each other or in combination with other columns on the 07 functional column as needed;

[0047] The detection tool 08 is used to detect whether the machining position of the workpiece 09 after clamping meets the machining requirement. The horizontal state of the machining position is confirmed through the 08 detection tool, and the 070105 support screw and the 070204 support screw are adjusted according to the horizontal state of the workpiece until the workpiece is adjusted to the required state.

[0048] The one end part isometric seat 070104 on the 0701 end part column and the two side tail isometric seats 070207 on the tail column 0702 form a three-point support state, which can ensure that the upper surface of the 09 workpiece is in a theoretical horizontal isometric posture under the support of the three points.

[0049] The functional column 07 includes a set of end part columns 0701, a set of tail columns 0702, four sets of lateral columns 0703, and three sets of auxiliary support columns 0704. The functional column 07 is mounted on the 04 multi-hole plate and connected through M24 bolts. The functional column 07 can be moved in position on the multi-hole plate 04 as needed. The hydraulic clamping unit 06 is mounted on the functional column 07, and when the functional column 07 is moved in position on the multi-hole plate 04, the hydraulic hose 0201 on the hydraulic clamping unit 06 needs to be connected to the adjacent nearest oil distribution block 03.

[0050] As shown in the figure, Figure 4 As shown, the oil distribution block 03 includes an oil path block body 0301, a quick plug connector 0302, and a common connector 0303. One end of the hydraulic hose 0201 is connected to the oil distribution block 03 through the quick plug connector 0302, and the common connector 0303 is connected to the main oil path 05 through the hydraulic hard pipe 0202. The main function of the oil distribution block is to connect the hydraulic clamping unit and the main oil path to form a complete loop.

[0051] In the above technical solution, the hydraulic hose 0201 is covered with a metal sheath to prevent damage from machining chips and other materials during use.

[0052] Hydraulic lines 02 and oil distribution blocks 03 are installed on both sides of the workbench, with 4 sets of oil distribution blocks installed on each side; perforated plates are installed above the workbench, using pin holes for positioning, and each perforated plate is connected to the 01 workbench with 13 evenly distributed M24 bolts.

[0053] In the above technical solution, the perforated plate 04 includes two side perforated plates 0401 and a middle perforated plate 0402, with the two side perforated plates 0401 installed on both sides of the middle perforated plate 0402.

[0054] In the above technical solution, the holes on the perforated plate are all M24 threaded through holes, and the holes are numbered.

[0055] The three perforated plates are combined into a set and machined together on a grinding machine to ensure that their height is within the allowable tolerance range.

[0056] like Figure 5 As shown, the main oil circuit 05 includes a main quick-connect connector 0502, a pressure gauge 0504, and a main oil circuit block 0505. The main oil circuit block 0505 is connected to the hydraulic station. Several main quick-connect connectors 0502 are installed on the main oil circuit block 0505. A pressure gauge 0504 is connected to the pipeline of each main quick-connect connector 0502. The lower part of the aforementioned main oil circuit block 0505 is connected to the branch oil circuit block 03.

[0057] In the above technical solution, an energy storage device 0503 is connected to the pipeline of each of the main quick connectors 0502.

[0058] In the above technical solution, an oil receiving tray 0506 is provided below the main quick connector 0502, and the oil receiving tray 0506 is connected to the main oil circuit block 0505.

[0059] Five main quick-connect couplings 0502 are provided, each corresponding to one of the five hydraulic circuits of this tooling fixture, and are manually connected using quick-connect couplings. The five hydraulic circuits of the flexible tooling fixture are: end clamping circuit, side clamping circuit, main clamp auxiliary support circuit, auxiliary clamping circuit, and return circuit. The oil inlet of the end clamping cylinder module 0601 is connected to the end clamping circuit; the oil inlet of the side clamping cylinder module 0602 is connected to the side clamping circuit; the oil inlets of the main clamping cylinder module 0603 and the auxiliary support cylinder module 0604 are connected to the main clamp auxiliary support circuit; and the oil inlet of the auxiliary clamping cylinder module 0605 is connected to the auxiliary clamping circuit. The return circuit of all the above cylinders is connected to the return circuit.

[0060] The 0503 accumulator and 0504 pressure gauge are each provided 5, respectively with the above-mentioned 5 5 hydraulic oil circuit, for its supplement hydraulic pressure and display the hydraulic pressure of the oil circuit.

[0061] In the above technical solution, the main oil circuit block 0505 is connected with the protective cover 0501, and the protective cover 0501 covers the accumulator 0503 and the pressure gauge 0504. The protective cover 0501 provides safety protection for the 05 main oil circuit.

[0062] The main function of the main oil circuit is: first, connecting with the hydraulic station, connecting the oil pressure of the hydraulic station into the hydraulic clamping unit; second, pressure maintaining function, maintaining the hydraulic pressure required by the hydraulic clamping unit.

[0063] When using the device, for the clamping and positioning of the same workpiece:

[0064] 1. The confirmation fixture on the tooling device is in a relaxed state, and the end support screw 070105 and the side edge support screw 070204 are adjusted to the avoidance state;

[0065] 2. Hoist the workpiece 09 to the tooling device, so that the workpiece 09 is in contact with the end equal height seat 070104 and the two side edge tail equal height seats 070207;

[0066] 3. Detect the horizontal condition of the upper surface machining position of the workpiece 09 by 08 detection tool, and adjust the end support screw 070105 and the side edge support screw 070204 to make the workpiece 09 to the horizontal state, and then lock all the screws;

[0067] 4. The oil pipe of the external hydraulic station is respectively connected with the main quick connector 0502 of the 05 main oil circuit;

[0068] 5. Start the end clamping oil circuit, and one end clamping oil cylinder module 0601 clamps and positions the workpiece 09 along the length direction;

[0069] 6. Start the side clamping oil circuit, and two side clamping oil cylinder modules 0602 clamp and position the workpiece along the width direction;

[0070] 7. Start the main clamping auxiliary support oil circuit, and four main clamping oil cylinder modules 0603 clamp and position the workpiece along the up-down direction. Under the control of the sequence valve, three auxiliary support cylinder modules 0604 act upward and contact and lock with the workpiece;

[0071] 8. Start the auxiliary clamping oil circuit, and three auxiliary clamping cylinder modules 0605 clamp and position the workpiece along the up-down direction;

[0072] 9. The operation control of the above oil circuit can be manually operated or automatically completed by PLC program control; after the workpiece is clamped and positioned, the oil pipe of the external hydraulic station is disconnected from the main oil circuit 05;

[0073] 10. The tooling fixture is transported to the machine tool for machining.

[0074] When the device is used for change production of different types of workpieces:

[0075] After changing other models of workpieces 09, due to the differences in width, length, and support clamping points, it is necessary to first adjust the position of each mechanism on the tooling device;

[0076] In the length direction, according to the length of the workpiece after the change, the end column 0701 is moved to the appropriate installation position along the length direction of the workbench 01, and the end column 0701 is fixed on the multi-hole plate 04 by bolts. When the end column 0701 moves a long distance, causing the length of the hydraulic hose 0202 connected to the oil distribution block 03 on the end column 0701 to be insufficient, disconnect the hydraulic hose 0202 from the original oil distribution block 03, and connect the hydraulic hose 0202 on the end column 0701 to the nearest oil distribution block 03;

[0077] If the length of the workpiece after the change varies greatly, in order to ensure that the workpiece is close to the center of the clamp during clamping, in addition to adjusting the end column 0701, the tail column 0702 also needs to be adjusted in position, and the adjustment method is the same as that of the end column 0701;

[0078] In the width direction, according to the width of the workpiece after the change and the clamping positioning point, the tail column 0702, the lateral column 0703, and the auxiliary support column 0704 in the functional column 07 are moved to the appropriate installation position along the length and width directions of the workbench 01, and are fixed on the multi-hole plate 04 by bolts. When the length of the hydraulic hose 0202 connected to the oil distribution block 03 on the position-adjusted 07 functional column is not appropriate, disconnect the hydraulic hose 0202 from the original oil distribution block 03, and connect the hydraulic hose 0202 on each functional column 07 to the nearest oil distribution block 03;

[0079] Adjust the installation position of the end support screw 070105 on the end adjustment plate 070102 of the end column 0701 and the installation position of the end support screw 070204 on the tail adjustment plate 070206 of the tail column 0702 to ensure that the end support screw 070105 and the end support screw 070204 are at reasonable support points of the workpiece 09;

[0080] In the height direction, one end equal-height seat 070104 on the end column 0701 and two side end equal-height seats 070207 on the tail column 0702 are replaced, so that the workpiece after the change is in the theoretical equal-height posture supported by the three-point equal-height block, and the position of the guide block 070302, the positioning screw 070303 and the side clamping oil cylinder module 0602 on the lateral column 0703 is adjusted to meet the needs of the workpiece guiding and width direction clamping;

[0081] The upper surface of the workpiece 09 after the change is not a complete plane, and the hydraulic clamping unit 06 cannot clamp the workpiece 09, so the side bottom column 070201, the side middle column 070202, the side top column 070203, the auxiliary support bottom column 070402, the auxiliary support middle column 070403 and the auxiliary support top column 070404 in the functional column 07 are disassembled and recombined to form new columns, and the height of the columns meets the clamping needs of the workpiece 09;

[0082] When the size of the workpiece after the change is too small and the functional column 07 cannot be fully installed, the number of auxiliary support columns 0704 can be appropriately reduced.

[0083] The final workpiece 09 clamping operation is consistent with the clamping and positioning operation process of the same kind of workpiece.

[0084] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A fixture device for clamping and positioning large thin-walled structural members, characterized by: The utility model provides a kind of hydraulic clamping unit, including workbench, hydraulic pipeline, oil distribution block, perforated plate, main oil circuit, hydraulic clamping unit, functional column and detection tool, the perforated plate is arranged on workbench, and perforated plate is equipped with multiple groups of evenly distributed holes, for the connection of functional column and workbench, the main oil circuit is installed on workbench, and several oil distribution blocks and hydraulic pipeline are arranged at the side of workbench, the hydraulic pipeline includes hydraulic hose and hydraulic hard pipe, and main oil circuit is connected to oil distribution block by hydraulic hard pipe, and oil distribution block is connected to hydraulic clamping unit by the aforementioned hydraulic hose, and hydraulic clamping unit is connected on corresponding functional column, and the functional column includes end column, tail column, lateral column, auxiliary support column, The hydraulic clamping unit includes end clamping cylinder module, side clamping cylinder module, main clamping cylinder module, auxiliary support cylinder module and auxiliary clamping cylinder module, and the oil return of all the above-mentioned cylinders is communicated with the oil return circuit. The end column includes end bottom column, end adjusting bottom plate, end top column, end equal-height seat and end support screw, the end adjusting bottom plate is installed on the end bottom column, the end top column, the end equal-height seat and the end support screw are all installed on the end adjusting bottom plate, the end adjusting bottom plate is provided with a plurality of through holes for adjusting the positions of the end top column, the end equal-height seat and the end support screw, the end equal-height seat is installed on the center line of the end adjusting bottom plate, and the end equal-height seat is provided with the end support screw on both sides, the same side of the end support screw and the end equal-height seat is provided with three end top columns, the middle end top column is connected with the end clamping cylinder module, and the two side end top columns are connected with the main clamping cylinder module. The tail column includes two side tail columns and one middle tail column, the side tail column includes side bottom column, side middle column, side top column, side support screw and main clamping cylinder module, the side bottom column is connected with the side middle column, the side middle column is connected with the side top column, one side of the side top column is provided with the side support screw, and the top of the side top column is provided with the main clamping cylinder module, the side tail column includes side tail bottom column, side tail adjusting bottom plate, side tail equal-height seat and side tail end positioning mechanism, the side tail adjusting bottom plate is installed on the side tail bottom column, the side tail equal-height seat and the side tail end positioning mechanism are installed on the side tail adjusting bottom plate, the side tail adjusting bottom plate is provided with a plurality of through holes for adjusting the positions of the side tail equal-height seat and the side tail end positioning mechanism. The lateral column includes column body, guide block and positioning screw, the positioning screw is horizontally installed on one side of the column body, the column body is provided with a groove for the up-down sliding of the positioning screw, and the column body opposite to the positioning screw is provided with a vertical guide block. The auxiliary supporting column comprises two side auxiliary supporting columns and an end auxiliary supporting column, the side auxiliary supporting column comprises a side auxiliary supporting column body, the end auxiliary supporting column comprises an auxiliary bottom supporting column, an auxiliary middle supporting column and an auxiliary top supporting column, the auxiliary bottom supporting column is connected with the auxiliary middle supporting column, the auxiliary middle supporting column is connected with the auxiliary top supporting column, auxiliary clamping cylinders are arranged at the top of the side auxiliary supporting column and the auxiliary top supporting column, and auxiliary supporting cylinders corresponding to the auxiliary clamping cylinders are arranged at the side of the side auxiliary supporting column and the auxiliary top supporting column. The detection tool is used to detect whether the machining position meets the machining requirement after the workpiece is clamped.

2. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 1, wherein: The oil distribution block comprises an oil distribution block body, a quick connector and a common connector, one end of the hydraulic hose is connected with the oil distribution block through the quick connector, and the common connector is connected with the main oil path through the hydraulic hard pipe.

3. The fixture apparatus for clamping and positioning of large thin-walled structural members according to claim 1 or 2, wherein: The hydraulic hose is provided with a metal sheath.

4. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 1, wherein: The porous plate comprises two side porous plates and a middle porous plate, and the two side porous plates are installed on the two sides of the middle porous plate.

5. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 1, wherein: The holes on the porous plate are all M24 threaded through holes, and the holes are numbered.

6. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 1, wherein: The main oil path comprises a main quick connector, a pressure gauge and a main oil path block, the main oil path block is connected to the hydraulic station, a plurality of main quick connectors are installed on the main oil path block, one pressure gauge is connected to the pipeline of each main quick connector, and the lower portion of the main oil path block is connected with the oil distribution block.

7. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 6 wherein: An accumulator is connected to the pipeline of each main quick connector.

8. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 6, wherein: An oil receiving disc is arranged below the main quick connector, and the oil receiving disc is connected to the main oil path block.

9. The fixture apparatus for clamped positioning of large thin-walled structural members of claim 6, wherein: A protective cover is connected to the main oil path block, and the accumulator and the pressure gauge are covered by the protective cover.

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