A fixture for double-station quick-change machining of multi-joint complex hollow turbine blades

Abstract

The present invention relates to a fixture for double-station quick-change processing of multi-joint complex hollow turbine blades, comprising: a base plate, a support vertically arranged on the base plate, a left positioning part and a right positioning part respectively arranged on both sides of the support for positioning the processing blades, and a quick-change positioning pin and a quick-change fastening pin for mounting the fixture on the processing equipment on the side of the base plate away from the support. The device has quick-change function and integration function, which not only meets the requirements of improving the output efficiency of parts and facilitating clamping, but also has a compact design structure, and the clamping efficiency is greatly improved, which is very conducive to mass production. The present invention has a compact structure, convenient positioning, high clamping stability, low labor intensity, and can effectively improve the processing efficiency by about 40%, which is very conducive to mass production. It effectively solves the problem that the existing traditional fixtures for grinding multi-joint complex hollow turbine blades have low processing efficiency, slow changing speed, and are not conducive to mass production.

Description

Technical Field

[0001] The invention relates to a double-station quick-change integrated fixture, in particular to a double-station quick-change integrated fixture for grinding complex hollow turbine blades. Background Art

[0002] The grinding of multi-joint complex hollow turbine blades is one of the main processing methods for aircraft engine blades at present. It is a processing method that removes the surface excess of the processed parts by high-speed rotation of the grinding wheel to obtain the specified processing shape and progress. The groove grinding processing method of multi-joint complex hollow turbine blades is widely adopted in the fields of aviation, aerospace, and aero-engine because it is suitable for processing difficult-to-cut materials, has good surface processing quality of parts, adapts to the machining needs of parts with special and complex structures, and has good grinding performance. However, the existing grinding processing method of multi-joint complex hollow turbine blades has low processing efficiency, high frequency of groove grinding, frequent model changes, and serious backlog of work-in-progress. As a result, the circulation efficiency of multi-joint complex hollow turbine blades produced in batches is greatly affected by the number of grinding processing stations, which reduces the output of left and right groove grinding and is not conducive to batch production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fixture for double-station quick-change processing of multi-joint complex hollow turbine blades, which is used to solve the problem that traditional fixtures for grinding multi-joint complex hollow turbine blades have low processing efficiency, slow changing speed, and are not conducive to mass production.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A fixture for double-station quick-change processing of multi-joint complex hollow turbine blades, characterized in that it includes: a base plate, a support is vertically arranged on the base plate, and a left positioning part and a right positioning part for positioning the processing blade are respectively arranged on both sides of the support, and a quick-change positioning pin and a quick-change fastening pin for mounting the fixture on the processing equipment are provided on the side of the base plate away from the support.

[0005] The beneficial effects of the present invention are as follows: a fixture for double-station quick-change processing of multi-joint complex hollow turbine blades has quick-change and integration functions, which not only meets the requirements of improving the output efficiency of parts and facilitating clamping, but also has a compact design structure, greatly improving the clamping efficiency, and is very conducive to mass production. The present invention has a compact structure, convenient positioning, high clamping stability, low labor intensity, and can effectively improve processing efficiency by about 40%, which is very conducive to mass production. It effectively solves the problem of low processing efficiency and slow change speed of traditional fixtures for grinding multi-joint complex hollow turbine blades, which is not conducive to mass production.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, in order to ensure that the left positioning part clamps the workpiece, the left positioning part includes a left reference block and a left transverse pressure rod; the left reference block is fixed to the support by connecting screws and fastening pins; one end of the left transverse pressure rod is rotatably connected to one end of the left flat screw, and the other end of the left flat screw is fixedly connected to the support, and the other end of the left transverse pressure rod is rotatably connected to the left fastening link, and the other end of the left fastening link is overlapped on the slot set on the support, and the left fastening link and the support are connected by setting a butterfly nut.

[0008] Furthermore, the left pressure block is tightly attached to the left transverse pressure rod, and the two left guide rods next to the left pressure block are arranged perpendicular to the plane where the left pressure block is located to prevent the left pressure block from rotating. The left pressure block is connected to the left transverse pressure rod by setting a left pressure rod. The left pressure block is tightly attached to the side of the left transverse pressure rod toward the support, and two left guide rods for limiting the rotation of the left pressure block are arranged on the left transverse pressure rod on both sides of the left pressure block.

[0009] Furthermore, in order to adapt to the step surface of the workpiece, a step plane is designed at the lower end of the left reference block, a left positioning pin is provided at the upper end of the left reference block for connecting to the positioning hole on the processing blade, and a step plane is provided at the lower end for adapting to the boss surface for positioning the step surface of the processing blade.

[0010] Furthermore, in order to ensure the limitation of the processing blade, a left side support is fixedly provided on the support at the lower side of the left reference block, and a left cylindrical pin for limiting the step surface of the processing blade is connected to the left side support.

[0011] Furthermore, in order to ensure that the right positioning part clamps the workpiece, the right positioning part includes a right reference block and a right transverse pressure rod; the right reference block is fixed to the support by connecting screws and fastening pins; one end of the right transverse pressure rod is rotatably connected to one end of the right flat screw, and the other end of the right flat screw is fixedly connected to the support, and the other end of the right transverse pressure rod is provided with a slot to overlap the end of the right fastening link, the right transverse pressure rod and the right fastening link are connected by setting a butterfly nut, and the other end of the right fastening link is connected to the support through a connecting hinge seat.

[0012] Furthermore, the right pressing block is tightly attached to the right transverse pressure rod, and the two right guide rods next to the right pressing block are arranged perpendicular to the plane where the right pressing block is located to prevent the right pressing block from rotating. The right pressing block is connected to the right transverse pressure rod by setting a right pressing rod. The right pressing block is tightly attached to the side of the right transverse pressure rod toward the support, and two right guide rods for limiting the rotation of the right pressing block are arranged on the right transverse pressure rod on both sides of the right pressing block.

[0013] Furthermore, in order to adapt to the step surface of the workpiece, the upper end of the right reference block is provided with a right positioning pin for connecting with the positioning hole on the processing blade, and the lower end is provided with a step plane adapted to the boss surface for positioning the step surface of the processing blade.

[0014] Furthermore, in order to ensure the limitation of the processing blade, a right side support is fixedly provided on the support at the lower side of the right reference block, and a right cylindrical pin for limiting the step surface of the processing blade is connected to the right side support.

[0015] Furthermore, a groove is provided on the upper portion of the support along the projection of the center line of the right pressing block to the support for preventing interference between the grinding wheel and the clamp.

[0016] The beneficial effects of adopting the above further solution are: clamps are designed on the left and right sides respectively, with the support as the basis, to ensure that both sides can be clamped at the same time, effectively improving processing efficiency; adding quick-change positioning pins and quick-change fastening pins to ensure fast and faster use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the top view of the entire device provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the front view of the entire device provided by an embodiment of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Base plate, 2. Hinge seat, 3. Right fastening rod, 4. Butterfly nut, 5. Right transverse pressure rod, 6. Right clamping rod, 7. Right clamping block, 8. Right handle, 9. Right guide rod, 10. Right locating pin, 11. Right reference block, 12. Right flat screw, 13. Support, 14. Left flat screw, 15. Left reference block, 16. Left transverse pressure rod, 17. Left guide rod, 18. Left handle, 19. Left clamping rod, 20. Left locating pin, 21. Left clamping block, 22. Left fastening rod, 23. Left side support, 24. Left cylindrical pin, 25. Left quick-change pull rod, 26. Quick-change locating pin, 27. Right quick-change pull rod, 28. Quick-change fastening pin, 29. Right cylindrical pin, 30. Right side support. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] Example 1

[0023] A fixture for double-station quick-change machining of multi-joint complex hollow turbine blades, such as Figure 1-2 As shown, it includes: a base plate 1, a support 13 is vertically arranged on the base plate 1, and a left positioning part and a right positioning part for positioning the processing blade are respectively arranged on both sides of the support 13. A quick-change positioning pin 26 and a quick-change fastening pin 28 for installing the fixture on the processing equipment are provided on the side of the base plate 1 away from the support 13.

[0024] In this embodiment, in order to ensure that the left positioning part clamps the workpiece, the left positioning part includes a left reference block 15 and a left transverse pressure rod 16; the left reference block 15 is fixed to the support 13 by connecting screws and fastening pins; one end of the left transverse pressure rod 16 is rotatably connected to one end of the left flat screw 14, and the other end of the left flat screw 14 is fixedly connected to the support 13, and the other end of the left transverse pressure rod 16 is rotatably connected to the left fastening link 22, and the other end of the left fastening link 22 is overlapped on the groove set in the support 13, and the left fastening link 22 is connected to the support 13 by setting a butterfly nut 4. In order to ensure that the right positioning part clamps the workpiece, the right positioning part includes a right reference block 11 and a right transverse pressure rod 5; the right reference block 11 is fixed to the support 13 by connecting screws and fastening pins; one end of the right transverse pressure rod 5 is rotatably connected to one end of the right flat screw 12, and the other end of the right flat screw 12 is fixedly connected to the support 13. The other end of the right transverse pressure rod 5 is provided with a notch to overlap the end of the right fastening link 3. The right transverse pressure rod 5 and the right fastening link 3 are connected by setting a butterfly nut 4, and the other end of the right fastening link 3 is connected to the support 13 by connecting the hinge seat 2. The support 13 is provided with a groove at the top along the center line of the right pressing block 7 projected onto the support 13 to prevent interference between the grinding wheel and the clamp.

[0025] In this embodiment, the left pressure block 21 is tightly attached to the left transverse pressure rod 16, and the two left guide rods 17 next to the left pressure block 21 are arranged perpendicular to the plane where the left pressure block 21 is located to prevent the left pressure block 21 from rotating. The left pressure block 21 is connected to the left transverse pressure rod 16 by setting a left pressure rod 19. The left pressure block 21 is tightly attached to the left transverse pressure rod 16 and is arranged on one side of the support 13, and two left guide rods 17 for limiting the rotation of the left pressure block 21 are arranged on both sides of the left pressure block 21 on the left transverse pressure rod 16. The right pressing block 7 is tightly attached to the right transverse pressure rod 5, and the two right guide rods 9 next to the right pressing block 7 are arranged perpendicular to the plane where the right pressing block 7 is located to prevent the right pressing block 7 from rotating. The right transverse pressure rod 5 is connected to the right pressing block 7 by setting a right pressing rod 6. The right pressing block 7 is tightly attached to the right transverse pressure rod 5 toward the side of the support 13, and two right guide rods 9 for limiting the rotation of the right pressing block 7 are arranged on the right transverse pressure rod 5 on both sides of the right pressing block 7.

[0026] In this embodiment, to align with the stepped surface of the workpiece, a stepped surface is designed at the lower end of the left reference block 15. The upper end of the left reference block 15 is provided with a left locating pin 20 for connecting with the locating hole on the processed blade, and the lower end is provided with a stepped surface that aligns with the boss surface for positioning the stepped surface of the processed blade. The upper end of the right reference block 11 is provided with a right locating pin 10 for connecting with the locating hole on the processed blade, and the lower end is provided with a stepped surface that aligns with the boss surface for positioning the stepped surface of the processed blade.

[0027] In this embodiment, to ensure the blade is positioned properly, a left side support 23 is fixedly mounted on the support 13 on the underside of the left reference block 15. A left cylindrical pin 24 is connected to the left side support 23 to limit the stepped surface of the blade. A right side support 30 is fixedly mounted on the support 13 on the underside of the right reference block 11 to ensure the blade is positioned properly. A right cylindrical pin 29 is connected to the right side support 30 to limit the stepped surface of the blade.

[0028] Example 2

[0029] A fixture for double-station quick-change processing of multi-jointed complex hollow turbine blades, the device includes a base plate 1, a hinge seat 2, a right fastening connecting rod 3, a butterfly nut 4, a right transverse pressure rod 5, a right clamping rod 6, a right clamping block 7, a right handle 8, a right guide rod 9, a right locating pin 10, a right reference block 11, a right flat screw 12, a support 13, a left flat screw 14, a left reference block 15, a left transverse pressure rod 16, a left guide rod 17, a left handle 18, a left clamping rod 19, a left locating pin 20, a left clamping block 21, a left fastening connecting rod 22, a left side support 23, a left cylindrical pin 24, a left quick-change pull rod 25, a quick-change locating pin 26, a right quick-change pull rod 27, a quick-change fastening pin 28, a right cylindrical pin 29, a right side support 30, and several standard clamping screws and standard cylindrical pins. Support 13 is symmetrically fastened to base plate 1 using standard set screws and standard cylindrical pins. Right datum block 11 is fastened to the right side of support 13 using standard set screws and standard cylindrical pins. Left datum block 15 is fastened to the left side of support 13 using standard set screws and standard cylindrical pins. Hinge base 2 is fastened to the right side of support 13 and the bottom side of right datum block 11 using a threaded connection. Right flat screw 12 is fastened to the right side of support 13 and the top side of right datum block 11 using a threaded connection. A short flat screw is fastened to the left side of support 13 and the top side of left datum block 15 using a threaded connection. Left side support 23 is fastened to the left side of support 13 and the inside side of left datum block 15 using standard set screws and standard cylindrical pins. Right side support 30 is fastened to the right side of support 13 and the outside side of left datum block 15 using standard set screws and standard cylindrical pins. The left locating pin 20 is fastened to the left datum block 15 through an interference fit with the pin hole on the left datum block 15. The right locating pin 10 is fastened to the right datum block 11 through an interference fit with the pin hole on the right datum block 11. The right fastening link 3 is hinged to the hinge base 2 via a standard cylindrical pin. The right transverse pressure rod 5 is hinged to the right flat screw 12 via a standard cylindrical pin. The right guide rod 9 is fastened to the right transverse pressure rod 5 through an interference fit with the pin hole on the right transverse pressure rod 5. The right clamping rod 6 is threadedly fastened to the right clamping block 7 through a through-hole in the right transverse pressure rod. The butterfly nut 4 is threadedly tightened to press the right transverse pressure rod 5 against the right fastening link 3. The right cylindrical pin 29 is interference fit in the right side support 30 through the pin hole on the right side support 30. The left cylindrical pin 24 is interference fit in the left side support 23 through the pin hole on the left side support 23. The left transverse pressure rod 16 is hinged to the short flat screw via a standard cylindrical pin. The left fastening link 22 is also hinged to the left transverse pressure rod 16 via a standard cylindrical pin. The left fastening link 22 is pressed against the support 13 via a butterfly nut 4. The left guide rod 17 is fastened to the left transverse pressure rod 16 through the pin hole in the left transverse pressure rod 16. The hold-down rod passes through the through hole in the left transverse pressure rod 16 and is threadedly fastened to the left hold-down block 21. The right handle 8 is fastened to the right centerline of the base plate 1 via the pin hole in the base plate 1. The left handle 18 is fastened to the left centerline of the base plate 1 via the pin hole in the base plate 1.The quick-change positioning pin 26 is threadedly connected and fastened to the left side below the center line of the base plate 1 through the left quick-change pull rod 25, and the quick-change fastening pin 28 is threadedly connected and fastened to the right side below the center line of the base plate 1 through the right quick-change pull rod 27.

[0030] A U-groove is defined on each side of the right transverse pressure rod 5 along the horizontal centerline, connecting the right fastening link 3 and the right flat screw 12, respectively. Three through-holes are defined along the horizontal centerline for positioning the right clamping block 7 and the left transverse pressure rod 16. A through-hole is defined midway between the U-grooves on the right side of the right transverse pressure rod 5 for mounting a universal cylindrical pin, connecting the right transverse pressure rod 5 and the right flat screw 12 via a revolute joint.

[0031] A square slot, symmetrical to the horizontal centerline of base plate 1, is provided on each side of the base plate 1, allowing the operator to access the fixture from either side. Three stepped holes and two through-holes are provided on the horizontal centerline of base plate 1, respectively, for attaching standard screws and cylindrical pins for assembly and fastening. Two quick-change stepped holes are provided on the vertical centerline of base plate 1: the left quick-change stepped hole is used to securely connect the left quick-change rod 25 and quick-change locating pin 26, while the right quick-change stepped hole is used to securely connect the right quick-change rod 27 and quick-change fastening pin 28. The left quick-change rod 25, quick-change locating pin 26, right quick-change rod 27, and quick-change fastening pin 28 connect to the grinding equipment's quick-change unit, enabling quick-change operations.

[0032] The support 13 has a long U-groove on the left side along the extension line of the right transverse pressure rod 5, which is convenient for the left fastening connecting rod 22 to be locked and connected. The support 13 has a square U-groove on the top along the center line of the right clamping block 7 projected to the support 13 to avoid interference with the clamp during the movement of the grinding wheel.

[0033] The bottom of the right datum block 11 has five stepped holes and two through holes, which are used to connect standard screws and cylindrical pins to fasten the right datum block 11 to the support 13. A U-groove is provided on the left side of the right datum block 11 near the right side support 30. The top and bottom ends of the right datum block 11 have steps with a certain step difference for positioning the workpiece.

[0034] The bottom of the left reference block 15 is provided with 5 stepped holes and 2 through holes. The left side of the left reference block 15 is provided with a U groove near the left side support 23. The upper and lower ends of the left reference block 15 are provided with steps with a certain step difference.

[0035] A U-groove is provided on each end face of the left and right sides of the left transverse pressure rod 16 along the horizontal centerline, respectively for connecting the left flat screw 14 and the left fastening link 22. Three through-holes are provided along the horizontal centerline for positioning the left pressure block 21 to the left transverse pressure rod 16. A through-hole is provided in the middle line of the right U-groove for mounting a universal cylindrical pin, connecting the left transverse pressure rod 16 and the left fastening link 22 via a rotating pin.

[0036] A U-groove is defined on each side of the right transverse pressure rod 5 along the horizontal centerline, connecting the right fastening link 3 and the long flat screw, respectively. Three through-holes are defined along the horizontal centerline for positioning the right clamping block 7. A through-hole is defined midway between the right U-grooves of the right transverse pressure rod 5 for mounting a universal cylindrical pin, connecting the right transverse pressure rod 5 and the right flat screw 12 via a revolute joint.

[0037] Example 3

[0038] The specific use is that before work, take out two multi-joint complex hollow turbine blades, match and clamp the boss hole of the left multi-joint complex hollow turbine blade with the left locating pin 20, match and clamp the step surface of the left multi-joint complex hollow turbine blade with the step plane of the left reference block 15, match and clamp the step surface of the left multi-joint complex hollow turbine blade with the left cylindrical pin 24, and use the butterfly nut 4 to press the left multi-joint complex hollow turbine blade through the left clamping block 21. Match and clamp the boss hole of the right multi-joint complex hollow turbine blade with the right locating pin 10, match and clamp the step surface of the right multi-joint complex hollow turbine blade with the step plane of the right reference block 11, match and clamp the step surface of the right multi-joint complex hollow turbine blade with the right cylindrical pin 29, and use the butterfly nut 4 to press the right multi-joint complex hollow turbine blade through the right clamping block 7. The quick-change positioning pin 26 and the quick-change fastening pin 28 on the base plate 1 are matched and clamped with the quick-change unit on the equipment. During operation, the switch of the slow-feed grinding device is pressed and the corresponding grinding parameters are input. The left multi-joint complex hollow turbine blade on the left reference block 15 and the right multi-joint complex hollow turbine blade on the right reference block 11 approach the multi-joint complex hollow turbine blade processing grinding groove under the X-axis movement of the slow-feed grinding device. Under the action of mechanical force, the right groove of the left multi-joint complex hollow turbine blade and the left groove of the left multi-joint complex hollow turbine blade are ground at the same time. During the processing, the entire fixture is in a stationary state.

[0039] Clamps are designed on the left and right sides respectively, with the support 13 as the basis, to ensure that both sides can be clamped at the same time, effectively improving the processing efficiency; the addition of quick-change positioning pins 26 and quick-change fastening pins 28 ensures faster use. The fixture for quick-change integrated processing of the left and right slots is equipped with a quick-change function and an integrated function. It not only meets the needs of improving the output efficiency of parts and facilitating clamping, but also has a compact design structure, which greatly improves the clamping efficiency and is very conducive to mass production. The present invention has a compact structure, convenient positioning, high clamping stability, low labor intensity, and can effectively improve processing efficiency by about 40%, which is very conducive to mass production. It effectively solves the problem of low processing efficiency and slow change speed of traditional fixtures for grinding multi-joint complex hollow turbine blades, which is not conducive to mass production.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] In the present invention, unless otherwise specified and limited, the first feature is "on" the second feature.

[0044] "Below" or "under" can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "above" or "above" the second feature.

[0045] The first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher than the second feature in level. The first feature is "below", "below" and "below" the second feature.

[0046] The first feature is directly below or diagonally below the second feature, or it simply means that the first feature is smaller in level than the second feature.

[0047] In the description of this specification, reference is made to the terms "one embodiment", "some embodiments", "exemplary embodiments", "illustrative embodiments", "description of ...

[0048] The description of "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0049] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner. In addition, in the absence of mutual contradiction, the present invention

[0050] Those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0051] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fixture for double-station quick-change processing of multiple complex hollow turbine blades, characterized in that: include: A base plate (1) is vertically connected to a support (13), and a left positioning portion and a right positioning portion for positioning the processing blade are respectively provided on both sides of the support (13); a quick-change positioning pin (26) and a quick-change fastening pin (28) for mounting the fixture on the processing equipment are provided on a side of the base plate (1) away from the support (13); The left positioning part includes a left reference block (15) and a left transverse pressure rod (16); The left reference block (15) is fixed to the support (13) by connecting screws and fastening pins; one end of the left transverse pressure rod (16) is rotatably connected to one end of the left flat screw rod (14), and the other end of the left flat screw rod (14) is fixedly connected to the support (13); the other end of the left transverse pressure rod (16) is rotatably connected to the left fastening link (22), and the other end of the left fastening link (22) is overlapped on the notch set on the support (13); the left fastening link (22) and the support (13) are connected by setting a butterfly nut (4).

2. A fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 1, characterized in that: The left transverse pressure rod (16) is rotatably connected to a left clamping rod (19), and the left clamping rod (19) is threadedly connected to a left clamping block (21) for clamping a workpiece. The left clamping block (21) is located on the side of the left transverse pressure rod (16) facing the support (13), and two left guide rods (17) for limiting the rotation of the left clamping block (21) are provided on the left transverse pressure rod (16). Both sides of the left clamping block (21) are slidably connected to the corresponding left guide rods.

3. The fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 1 is characterized in that: The upper end of the left reference block (15) is provided with a left positioning pin (20) for connecting with a positioning hole on the processing blade, and the lower end is provided with a step plane adapted to a boss surface for positioning the step surface of the processing blade.

4. A fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 3, characterized in that: A left side support (23) is fixedly provided on the support (13) at the lower side of the left reference block (15), and a left cylindrical pin (24) for limiting the step surface of the processed blade is connected to the left side support (23).

5. The fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 1 is characterized in that: The right side positioning part includes a right reference block (11) and a right transverse pressure rod (5); The right reference block (11) is fixed to the support (13) by connecting screws and fastening pins; one end of the right transverse pressure rod (5) is rotatably connected to one end of the right flat screw rod (12), and the other end of the right flat screw rod (12) is fixedly connected to the support (13); the other end of the right transverse pressure rod (5) is provided with a notch to overlap the end of the right fastening connecting rod (3); the right transverse pressure rod (5) and the right fastening connecting rod (3) are connected by providing a butterfly nut (4); the other end of the right fastening connecting rod (3) is connected to the support (13) by connecting the hinge seat (2).

6. A fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 5, characterized in that: The right transverse pressure rod (5) is rotatably connected to a right pressing rod (6), and the right pressing rod (6) is threadedly connected to a right pressing block (7). The right pressing block (7) is located on the side of the right transverse pressure rod (5) facing the support (13), and two right guide rods (9) for limiting the rotation of the right pressing block (7) are provided on the right transverse pressure rod (5). Both sides of the right pressing block (7) are slidably connected to the corresponding right guide rods.

7. The fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 5 is characterized in that: The upper end of the right reference block (11) is provided with a right positioning pin (10) for connecting with the positioning hole on the processing blade, and the lower end is provided with a step plane adapted to the boss surface for positioning the step surface of the processing blade.

8. A fixture for double-station quick-change processing of multiple complex hollow turbine blades according to claim 7, characterized in that: A right side support (30) is fixedly provided on the support (13) at the lower side of the right reference block (11), and a right cylindrical pin (29) for limiting the step surface of the processed blade is connected to the right side support (30).

9. A fixture for double-station quick-change processing of multiple complex hollow turbine blades according to any one of claim 6, characterized in that: The support (13) is provided with a groove at the top thereof, which is projected along the center line of the right pressing block (7) to the support (13), for preventing the grinding wheel from interfering with the clamp.

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