An automatic parting tooling for split diffusion bonding structure blades

Abstract

An automatic parting tooling for split diffusion welding structure blades, comprising a base, on which a fixed automatic centering mechanism, a sliding automatic centering mechanism and a lateral flexible automatic centering mechanism are fixedly installed. A side floating support is installed on the same side of the fixed automatic centering mechanism, and a tool setting block is arranged on the upper surface of the base. A side floating pressing mechanism is installed on the same side of the sliding automatic centering mechanism and the lateral flexible automatic centering mechanism. A top hinge pressing plate assembly is arranged between the fixed automatic centering mechanism and the sliding automatic centering mechanism. A bottom floating support is installed on the base below the top hinge pressing plate assembly, and a positioning pin moving mechanism is arranged on the base outside the bottom floating support. The automatic parting tooling for split diffusion welding structure blades accurately finds the theoretical mid-plane of the blades after diffusion welding, maximally improves the dimensional accuracy of the inner cavity of the blades and the process reference, reduces the machining difficulty of the outer contour, shortens the machining cycle, and improves the machining quality of the blades.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary tooling for the machining of compressor blades of aeroengines, and particularly relates to an automatic part - splitting tooling for blades with a split diffusion - welding structure. Background Technique

[0002] At present, most of the intake casings of aeroengines adopt the design scheme of intake struts and adjustable blades with a split diffusion - welding structure made of titanium alloy. While bringing weight reduction and high reliability to the engine, it also brings many challenges to the machining and manufacturing of the blades.

[0003] For blades with a split diffusion - welding structure, a general process manufacturing scheme is to machine the inner cavity of a single piece - diffusion - welding connection - machining the outer contour of the assembly. Therefore, it is necessary to select a relatively stable and reliable part for datum transformation before and after diffusion welding to ensure that the position between the final inner cavity and the outer contour of the blade meets the requirements. Generally speaking, the traditional method generally considers directly selecting the outer surface after diffusion welding for datum transformation. However, due to a certain degree of deformation of the blade after welding and a certain degree of distortion of the outer contour, if the traditional method of datum transformation is continued, that is, continuing to use the outer surface as the datum for subsequent machining, the positional relationship between the inner cavity and the outer contour cannot be accurately determined, and the positional accuracy between the new datum and the diffusion - welding part - splitting surface cannot be guaranteed. The blade is as Figure 1 shown. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic part - splitting tooling for blades with a split diffusion - welding structure. By using the structure of the automatic part - splitting tooling for blades with a split diffusion - welding structure, it has an automatic part - splitting mechanism to accurately find the theoretical mid - plane of the blade after diffusion welding, so as to machine a relatively stable process datum, maximize the dimensional accuracy between the inner cavity of the blade and the process datum, thereby reducing the machining difficulty of the outer contour of the subsequent blade machining, shortening the later machining adjustment cycle, and improving the machining quality of the blade.

[0005] An automatic parting tooling for split diffusion welding structure blades, including a base. A fixed automatic centering mechanism, a sliding automatic centering mechanism and a lateral flexible automatic centering mechanism are fixedly installed on the base. The automatic centering of the two process planes of the blade is realized through the setting of the automatic centering mechanism. A side floating support is fixedly installed on the same side of the fixed automatic centering mechanism. A tool setting block is arranged on the upper surface of the base outside one of the side floating supports. A side floating pressing mechanism for pressing the side of the blade is fixedly installed on the same side of the sliding automatic centering mechanism and the lateral flexible automatic centering mechanism. A top hinge pressing plate assembly is arranged between the fixed automatic centering mechanism and the sliding automatic centering mechanism. A bottom floating support is installed on the base below the top hinge pressing plate assembly. A positioning pin moving mechanism is arranged on the base outside the bottom floating support. By moving the positioning pin up and down, the blade shrinks downward after being fixed, which is convenient for processing.

[0006] There are two fixed automatic centering mechanisms, which have the same structure and are symmetrically distributed. It includes a vertical seat fixedly installed on the base by bolts. A boss is machined downward along the top surface of the vertical seat. An automatic centering parallel jaw vice is installed on the boss. The automatic centering parallel jaw vice is fixed on the vertical seat by bolts arranged in the horizontal direction.

[0007] The sliding automatic centering mechanism includes a base with a chute and a vertical seat slidably installed on the base. A boss is machined downward along the top surface of the vertical seat. An automatic centering parallel jaw vice is installed on the boss. The automatic centering parallel jaw vice is fixed on the vertical seat by bolts arranged in the horizontal direction. A push rod is threadedly connected to the cross beam at the rear end of the base. One end of the push rod is rotatably installed with an end plate on the side wall at the rear end of the vertical seat. By rotating the push rod to push a part of the structure of the vertical seat forward, the automatic centering of the two process planes of the blade is realized.

[0008] The lateral flexible automatic centering mechanism includes a base with a chute and a vertical seat slidably installed on the base. A flexible positioning block sliding groove is machined downward along the top surface of the vertical seat. A sliding block is slidably installed in the middle of the inner surface of the flexible positioning block sliding groove. The front support arm of the sliding block is connected to a precision lead screw. An upper positioning connecting rod and a lower positioning connecting rod are installed on the precision lead screw at the upper and lower ends of the sliding block. An upper positioning connecting block and a lower positioning connecting block are respectively installed on the upper positioning connecting rod and the lower positioning connecting rod. An upper positioning block and a lower positioning block are respectively fixedly installed on the upper positioning connecting block and the lower positioning connecting block by screws and positioning keys.

[0009] There are two side floating supports, which have the same structure and are symmetrically distributed. Each side floating support includes a vertical seat fixedly installed on the upper surface of the base by bolts. A through hole for installing the floating support is provided on the side wall of the vertical seat. The front end of the floating support faces the blade. A spring located in the through hole is installed at the rear end of the floating support. A sealing plate is installed on the side wall of the vertical seat at the rear end of the spring by bolts. A tightening screw for pressing the floating support is threadedly connected to the top of the vertical seat. A long groove is machined on the side wall of the floating support. A limiting screw is threadedly connected to the side wall of the vertical seat, and the end of the limiting screw cooperates with the long groove of the floating support.

[0010] There are two side floating pressing mechanisms, which have the same structure and are symmetrically distributed. Each side floating pressing mechanism includes a vertical seat fixedly installed on the upper surface of the base by bolts. A pressing screw is threadedly connected to the top of the vertical seat, and a pressing block is provided at the front end of the screw rod of the pressing screw.

[0011] There are four bottom floating supports, which have the same structure and are symmetrically distributed in pairs. Each bottom floating support includes a connecting block with an installation groove and a connecting hole at the top. A spring is installed at the bottom of the installation groove. A floating connecting block located in the installation groove is installed at the top of the spring. A tightening screw for pressing the floating connecting block is threadedly connected to the side wall of the floating connecting block. A floating support is installed at the top of the floating connecting block. A long groove is machined on the side arm of the floating connecting block. A limiting screw is threadedly connected to the side wall of the connecting block, and the end of the limiting screw cooperates with the long groove on the floating connecting block.

[0012] There are two positioning pin moving mechanisms, which have the same structure and are symmetrically distributed. Each positioning pin moving mechanism includes a cylinder with a flange. The cylinder is installed on the base through the flange end. A slideway is provided on the cylinder wall of the cylinder. A positioning pin is installed in the cylinder. An adjusting rod that is tightly fitted with the slideway is installed on the positioning pin. The positioning pin is extended or retracted from the cylinder by pushing the adjusting rod to reciprocate in the slideway.

[0013] The top hinge pressing plate assembly includes support seat Ⅰ and support seat Ⅱ. Grooves extending downward are provided at the tops of support seat Ⅰ and support seat Ⅱ. A receiving groove extending downward is provided at the bottom of the groove of support seat Ⅱ. A fastener for pressing the top hinge pressing plate is hinged to the top of support seat Ⅱ. One end of the top hinge pressing plate is located in the groove and is hinged to the top of support seat Ⅰ through a rotating shaft. A notch for cooperating with the fastener is provided at the other end. A top movable pressing block is fixedly installed on the lower surface of the top hinge pressing plate by bolts.

[0014] The technical effects of the present invention are as follows:

[0015] 1. The automatic parting tooling design for the split diffusion welding structure blade adopts multiple mechanisms that can achieve automatic centering. By using the parallel jaw vice mechanism, it is ensured that the positioning planes on both sides of the parallel jaw vice can simultaneously contact both sides of the process platform and achieve automatic centering.

[0016] 2. The automatic centering mechanism is mainly distributed at the part where the blade process platform is located. By fixing each automatic centering mechanism, the automatic centering of the mid-plane of the entire blade is achieved.

[0017] 3. The bottom of the tooling adopts a support mechanism that can be automatically adjusted. Through the spring and locking device, after the automatic centering mechanism of the blade is locked, the support mechanism below can float and support along with the outer contour of the blade and can be fixed.

[0018] 4. The positioning in the length direction of the blade adopts pin-hole positioning. At the same time, the positioning pin can achieve a hidden function after the blade is fixed to ensure that there is no interference during the processing.

[0019] 5. A floating pressing mechanism is provided in the width direction of the blade to improve the clamping stability of the blade.

[0020] 6. Using this design method of the automatic parting tooling for blades with split diffusion welding structure, the mid-plane of the blade can be accurately found, ensuring stable processing accuracy, improving the position consistency between the inner cavity and the outer reference, and can be used on the toolings of other similar structure blades. It is estimated that the design and manufacturing cycle can be saved by more than three months, and the qualified rate of part processing can be increased by 15%. The indirect economic effect of single-engine processing can reach 60,000 yuan, which belongs to an advanced process equipment structure that can be popularized and applied. Brief Description of the Drawings

[0021] Figure 1 Schematic diagram of the blade structure of the present invention; wherein Figure 1 (a) is a side view, Figure 1 (b) is a main view sectional view;

[0022] Figure 2 Schematic diagram of the installation parts of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0023] Figure 3 Schematic diagram of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0024] Figure 4 Schematic diagram of hiding the top hinge pressing plate and the top movable pressing plate of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0025] Figure 5 Top view of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0026] Figure 6 Top view of hiding the top hinge pressing plate and the top movable pressing plate of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0027] Figure 7 Side view of the automatic parting tooling for blades with split diffusion welding structure of the present invention;

[0028] Figure 8 Partial schematic diagram of automatic centering of the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0029] Figure 9 Schematic diagram of the positioning pin moving mechanism in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0030] Figure 10 Cross-sectional view of the positioning pin moving mechanism in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0031] Figure 11 First perspective cross-sectional view of the bottom floating support in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0032] Figure 12 Second perspective cross-sectional view of the bottom floating support in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0033] Figure 13 Cross-sectional view of the side floating support in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0034] Figure 14 Cross-sectional view of the side floating pressing mechanism in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0035] Figure 15 First perspective cross-sectional view of the lateral flexible automatic centering mechanism in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0036] Figure 16 Second perspective cross-sectional view of the lateral flexible automatic centering mechanism in the automatic parting tool for the split diffusion welding structure blade of the present invention;

[0037] 101 - Base, 102 - Fixed automatic centering mechanism, 103 - Sliding automatic centering mechanism, 104 - Lateral flexible automatic centering mechanism, 105 - Automatic centering parallel jaw vice, 2 - Lateral floating pressing mechanism, 4 - Tool setting block, 5 - Lateral floating support, 6 - Top hinge pressing plate assembly, 7 - Top movable pressing block, 8 - Bottom floating support, 9 - Diamond locating pin, 10 - Locating pin moving mechanism, 11 - Vertical seat, 12 - Base, 13 - Push rod, 14 - Sliding block, 15 - Precision lead screw, 16 - Upper positioning connecting rod, 17 - Lower positioning connecting rod, 18 - Upper positioning connecting block, 19 - Lower positioning connecting block, 20 - Upper positioning block, 21 - Lower positioning block, 22 - Floating support, 23 - Spring, 24 - Sealing plate, 25 - Tightening screw, 26 - Long slot, 27 - Limit screw, 28 - Pressing screw, 29 - Pressing block, 30 - Connecting block, 31 - Floating connecting block, 32 - Cylinder, 33 - Slideway, 34 - Cylindrical locating pin, 35 - Adjusting rod, 36 - Support seat Ⅰ, 37 - Support seat Ⅱ, 38 - Top hinge pressing plate, 39 - Fastener. Detailed implementation mode

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] As Figures 2 to 8 shown, an automatic parting tooling for split diffusion welding structure blades includes a base 101, on which a fixed automatic centering mechanism 102, a sliding automatic centering mechanism 103 and a lateral flexible automatic centering mechanism 104 are fixedly installed. The automatic centering of the two process planes of the blade is realized through the setting of the automatic centering mechanism. A lateral floating support 5 is fixedly installed on the same side of the fixed automatic centering mechanism 102. A tool setting block 4 is arranged on the upper surface of the base 101 outside one of the lateral floating supports 5. A lateral floating pressing mechanism 2 for pressing the side of the blade is fixedly installed on the same side of both the sliding automatic centering mechanism 103 and the lateral flexible automatic centering mechanism 104. A top hinge pressing plate assembly 6 is arranged between the fixed automatic centering mechanism 102 and the sliding automatic centering mechanism 103. A bottom floating support 8 is installed on the base 101 below the top hinge pressing plate assembly 6. A locating pin moving mechanism 10 is arranged on the base 101 outside the bottom floating support 8. By moving the locating pin up and down, the blade is fixed and then shrinks downward, facilitating processing.

[0040] There are two fixed automatic centering mechanisms 102, which have the same structure and are symmetrically distributed. It includes a vertical seat 11 fixedly installed on the base 101 through bolts. A boss is machined downward from the top end surface of the vertical seat 11. An automatic centering parallel jaw vice 105 is installed on the boss. The automatic centering parallel jaw vice 105 is fixed on the vertical seat 11 through bolts arranged in the horizontal direction.

[0041] The sliding type automatic centering mechanism 103 includes a base 12 with a chute and a vertical seat 11 slidably mounted on the base 12. A boss is machined downward from the top surface of the vertical seat 11, and an automatic centering parallel-jaw vice 105 for automatically centering the two process planes of the blade is mounted on the boss. The automatic centering parallel-jaw vice 105 is fixed to the vertical seat 11 by bolts arranged in the horizontal direction. A push rod 13 is threadedly connected to the cross beam at the rear end of the base 12. One end of the push rod 13 is rotatably mounted on an end plate on the rear side wall of the vertical seat 11. By rotating the push rod 13, the front movement of a part of the structure of the vertical seat 11 is promoted to realize the automatic centering of the two process planes of the blade.

[0042] As Figure 15 and Figure 16 shown, the lateral flexible automatic centering mechanism 104 includes a base 12 with a chute and a vertical seat 11 slidably mounted on the base 12. A boss is machined downward from the top surface of the vertical seat 11, and a flexible positioning block sliding groove is mounted on the boss. A sliding block 14 is slidably mounted in the middle of the inner surface of the flexible positioning block sliding groove. The front support arm of the sliding block 14 is connected to a precision lead screw 15. Upper positioning connecting rods 16 and lower positioning connecting rods 17 are mounted on the precision lead screw 15 at the upper and lower ends of the sliding block 14. Upper positioning connecting blocks 18 and lower positioning connecting blocks 19 are respectively mounted on the upper positioning connecting rods 16 and the lower positioning connecting rods 17. An upper positioning block 20 and a lower positioning block 21 are respectively fixedly mounted on the upper positioning connecting block 18 and the lower positioning connecting block 19 by screws and positioning keys.

[0043] As Figure 13 shown, there are two side floating supports 5, which have the same structure and are symmetrically distributed for the floating support 22 on the side of the blade. It includes a vertical seat 11 fixedly mounted on the upper surface of the base 101 by bolts. A through hole for mounting the floating support 22 is opened on the side wall of the vertical seat 11. The front end of the floating support 22 faces the blade. A spring 23 located in the through hole is mounted at the rear end of the floating support 22. A sealing plate 24 is mounted on the side wall of the vertical seat 11 at the rear end of the spring 23 by bolts. The side wall of the floating support 22 is machined with an inclined surface. A downward inclined threaded hole is machined at the top of the vertical seat 11. A tightening screw 25 is screwed in the threaded hole. By rotating the tightening screw 25, the end of the tightening screw 25 is matched with the inclined surface to tightly press the floating support 22. A long groove 26 is machined on the side wall of the floating support 22. A limit screw 27 is threadedly connected to the side wall of the vertical seat 11. The end of the limit screw 27 is matched with the long groove 26 of the floating support 22.

[0044] As Figure 14 shown, there are two side floating pressing mechanisms 2, which have the same structure and are symmetrically distributed for pressing the side of the blade. It includes a vertical seat 11 fixedly mounted on the upper surface of the base 101 by bolts. A pressing screw 28 is threadedly connected to the top of the vertical seat 11. A pressing block 29 is arranged at the front end of the screw rod of the pressing screw 28.

[0045] As Figure 11 and Figure 12 shown, there are four bottom floating supports 8, which have the same structure and are symmetrically distributed in pairs. They are used for the floating support 22 of the blade bottom surface. The two bottom floating supports 8 located between the fixed automatic centering mechanism 102 and the sliding automatic centering mechanism 103 are both fixedly installed on the pads on the upper surface of the base 101 through bolts. The two bottom floating supports 8 located between the fixed automatic centering mechanism 102 and the lateral flexible automatic centering mechanism 104 are both fixedly installed on the pads on the upper surface of the base 101 through bolts. It includes a connecting block 30 with an installation groove and a connecting hole at the top. The screw is passed through the countersunk connecting hole of the connecting block 30 and tightened on the pad. A spring 23 is installed at the bottom of the installation groove. The top of the spring 23 is installed with a floating connecting block 31 located in the installation groove. The side wall of the floating connecting block 31 is processed with an inclined surface. The side wall of the connecting block 30 is processed with an inclined threaded hole. The tightening screw 25 is screwed into the threaded hole. By rotating the tightening screw 25, the end of the tightening screw 25 is matched with the inclined surface to tighten the floating connecting block 31. The top of the floating connecting block 31 is threadedly connected with a floating support 22, and the floating support 22 is fixed on the connecting block 30 through a nut. The side arm of the floating connecting block 31 is processed with a long groove 26. The side wall of the connecting block 30 is threadedly connected with a limit screw 27, and the end of the limit screw 27 is matched with the long groove 26 on the floating connecting block 31.

[0046] As Figure 9 and Figure 10 shown, there are two positioning pin moving mechanisms 10, which have the same structure and are symmetrically distributed. It includes a cylinder 32 with a flange. The cylinder 32 is installed on the base 101 through the flange end. A slideway 33 is opened on the cylinder wall of the cylinder 32. The structural shape of the slideway 33 is L-shaped. A positioning pin is installed in the cylinder 32. The positioning pin is used for the positioning of the blade pin hole. This hole is the diffusion welding reference and belongs to an important mechanism for reference conversion. An adjusting rod 35 that is tightly fitted with the slideway 33 is installed on the positioning pin. By pushing the adjusting rod 35 to reciprocate in the slideway 33, the positioning pin extends or retracts from the cylinder 32. The positioning pins on the two positioning pin moving mechanisms 10 are respectively a diamond-shaped positioning pin 9 and a cylindrical positioning pin 34. When the adjusting rod 35 is in the upper position of the slideway 33, that is, at the top of the slideway 33, at this time the positioning pin is matched with the positioning hole of the blade. When the adjusting rod 35 is in the lower position of the slideway 33, that is, at the end of the horizontal part of the slideway 33, at this time the positioning pin retracts into the cylinder 32.

[0047] The top hinge pressing plate assembly 6 is used for pressing the top of the blade and includes a support seat I 36 and a support seat II 37. Grooves extending downward are provided at the tops of the support seat I 36 and the support seat II 37. A receiving groove extending downward is provided at the bottom of the groove of the support seat II 37. A fastener for pressing the top hinge pressing plate 28 is hinged to the top of the support seat II 37. In this embodiment, the fastener is composed of a screw rod and a locking nut. One end of the top hinge pressing plate 28 is located in the groove and is hinged to the top of the support seat I 36 through a rotating shaft, and a notch for cooperating with the fastener is provided at the other end. A top movable pressing block 7 is fixedly installed on the lower surface of the top hinge pressing plate 28 through a bolt.

[0048] A method for using an automatic parting tool for a split diffusion bonding structure blade includes the following steps:

[0049] Step 1: Place the blade on the bottom floating support 8; sequentially install the flat jaw vice moving handle on the push rods 13 of the sliding type automatic centering mechanism 103 and the lateral flexible automatic centering mechanism 104, and rotate the flat jaw vice moving handle to move the sliding type automatic centering mechanism 103 and the lateral flexible automatic centering mechanism 104 towards one side of the blade to ensure that the positioning blocks extend into the process grooves of the blade.

[0050] Step 2: Push the adjusting rod 35 of the positioning pin moving mechanism 10 to place the positioning pin thereon in the upper position and ensure that the positioning pin is inserted into the blade positioning hole.

[0051] Step 3: Sequentially rotate the precision lead screws 15 of the fixed type automatic centering mechanism 102, the sliding type automatic centering mechanism 103, and the lateral flexible automatic centering mechanism 104 to ensure that automatic centering is completed for each process platform groove; then rotate the tightening screws 25 on the bottom floating support 8 and the tightening screws 25 on the side floating support 5 to fix the corresponding floating supports 22 respectively to stabilize the blade.

[0052] Step 4: Rotate the pressing screw 28 on the side floating pressing mechanism 2 to press the blade, and rotate the top hinge pressing plate assembly 6 to press the top of the blade to fix the blade.

[0053] Step 5: Push the adjusting rod 35 of the positioning pin moving mechanism 10 to place the positioning pin thereon in the lower position and retract the positioning pin.

Claims

1. An automatic parting tooling for split diffusion welding structure blades, characterized in that It includes a base, on which a fixed automatic centering mechanism, a sliding automatic centering mechanism and a lateral flexible automatic centering mechanism are fixedly installed. The automatic centering of the two process planes of the blade is achieved through the setting of the automatic centering mechanism. On the same side of the fixed automatic centering mechanism, a side floating support is fixedly installed. At the upper surface of the base outside one of the side floating supports, a tool setting block is provided. On the same side of the sliding automatic centering mechanism and the lateral flexible automatic centering mechanism, a side floating pressing mechanism for pressing the side of the blade is fixedly installed. Between the fixed automatic centering mechanism and the sliding automatic centering mechanism, a top hinge pressing plate assembly is provided. At the base below the top hinge pressing plate assembly, a bottom floating support is installed. A positioning pin moving mechanism is provided on the base outside the bottom floating support; The sliding automatic centering mechanism includes a base with a chute and a vertical seat slidably installed on the base. A boss is machined downward along the top surface of the vertical seat. An automatic centering parallel jaw vice is installed on the boss. The automatic centering parallel jaw vice is fixed on the vertical seat by a bolt arranged in the horizontal direction. A push rod is threadedly connected to the cross beam at the rear end of the base. One end of the push rod is rotatably installed with an end plate on the side wall at the rear end of the vertical seat. The automatic centering of the two process planes of the blade is achieved by rotating the push rod to push a part of the structure of the vertical seat forward; The lateral flexible automatic centering mechanism includes a base with a chute and a vertical seat slidably installed on the base. A boss is machined downward along the top surface of the vertical seat. A flexible positioning block sliding groove is installed on the boss. A sliding block is slidably installed in the middle of the inner surface of the flexible positioning block sliding groove. The front support arm of the sliding block is connected to a precision lead screw. An upper positioning connecting rod and a lower positioning connecting rod are installed on the precision lead screws at the upper and lower ends of the sliding block. An upper positioning connecting block and a lower positioning connecting block are respectively installed on the upper positioning connecting rod and the lower positioning connecting rod. An upper positioning block and a lower positioning block are respectively fixedly installed on the upper positioning connecting block and the lower positioning connecting block by screws and positioning keys.

2. The automatic parting tooling for split diffusion welding structure blades according to claim 1, wherein: There are two fixed automatic centering mechanisms, which have the same structure and are symmetrically distributed. It includes a vertical seat fixedly installed on the base by bolts. A boss is machined downward along the top surface of the vertical seat. An automatic centering parallel jaw vice is installed on the boss. The automatic centering parallel jaw vice is fixed on the vertical seat by a bolt arranged in the horizontal direction.

3. The automatic part - splitting tooling for butt - diffusion - welded structural blades according to claim 1, wherein: There are two side floating supports, which have the same structure and are symmetrically distributed. It includes a vertical seat fixedly installed on the upper surface of the base by bolts. A through hole for installing a floating support is opened on the side wall of the vertical seat. The front end of the floating support faces the blade. A spring is installed at the rear end of the floating support and is located in the through hole. A sealing plate is installed on the side wall of the vertical seat at the rear end of the spring by bolts. A tightening screw for tightening the floating support is threadedly connected to the top of the vertical seat. A long groove is machined on the side wall of the floating support. A limit screw is threadedly connected to the side wall of the vertical seat. The end of the limit screw cooperates with the long groove of the floating support.

4. An automatic parting tooling for split diffusion bonding structure blades according to claim 1, characterized in that: There are two side floating pressing mechanisms, which have the same structure and are symmetrically distributed. It includes a vertical seat fixedly installed on the upper surface of the base by bolts. A pressing screw is threadedly connected to the top of the vertical seat. A pressing block is provided at the front end of the screw rod of the pressing screw.

5. The automatic parting tooling for split diffusion welding structure blades according to claim 1, characterized in that: There are four bottom floating supports, which have the same structure and are symmetrically distributed in pairs. Each support includes a connecting block with an installation groove and a connecting hole at the top. A spring is installed at the bottom of the installation groove, and a floating connecting block located in the installation groove is installed at the top of the spring. A tightening screw for pressing the floating connecting block is threadedly connected to the side wall of the floating connecting block. A floating support is installed at the top of the floating connecting block. A long groove is machined on the side arm of the floating connecting block, and a limiting screw is threadedly connected to the side wall of the connecting block. The end of the limiting screw cooperates with the long groove on the floating connecting block.

6. The automatic parting tooling for split diffusion bonding structure blades according to claim 1, characterized in that: There are two positioning pin moving mechanisms, which have the same structure and are symmetrically distributed. Each mechanism includes a cylinder with a flange. The cylinder is installed on the base through the flange end. A slideway is opened on the cylinder wall. A positioning pin is installed in the cylinder, and an adjusting rod tightly fitted with the slideway is installed on the positioning pin. By pushing the adjusting rod to reciprocate in the slideway, the positioning pin can be extended or retracted from the cylinder.

7. An automatic parting tooling for split diffusion bonding structure blades according to claim 1, characterized in that: The top hinge pressing plate assembly includes support seat Ⅰ and support seat Ⅱ. Grooves extending downward are opened at the tops of support seat Ⅰ and support seat Ⅱ. A receiving groove extending downward is opened at the bottom of the groove of support seat Ⅱ. A fastener for pressing the top hinge pressing plate is hinged at the top of support seat Ⅱ. One end of the top hinge pressing plate is located in the groove and is hinged at the top of support seat Ⅰ through a rotating shaft. The other end is provided with a notch for cooperating with the fastener. A top movable pressing block is fixedly installed on the lower surface of the top hinge pressing plate through bolts.

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