Tool for machining fan cabin cover support

Abstract

The invention discloses a tool for machining a fan cabin cover support, and belongs to the field of tool clamps. The tool for machining the fan cabin cover support comprises a mounting seat, a first mounting plate, a second mounting plate, a third mounting plate, a fourth mounting plate and a plurality of positioning reference parts, the positioning reference parts are vertically arranged on the first mounting plate and the second mounting plate, and the positioning reference parts are horizontally arranged on the third mounting plate and the fourth mounting plate. The positioning reference piece on the third mounting plate is perpendicular to the positioning reference piece on the fourth mounting plate; a first positioning assembly, a second positioning assembly and a third positioning assembly are arranged on the mounting base, the first positioning assembly is configured to push a workpiece to abut against the positioning reference part on the third mounting plate, and the second positioning assembly is configured to push the workpiece to abut against the positioning reference part on the fourth mounting plate. According to the multi-directional clamping device, the workpiece is rapidly and automatically clamped in multiple directions, the clamping adjustment time is shortened, the operation complexity is reduced, and the clamping consistency and the machining efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tooling fixtures, in particular to a tooling fixture for processing a fan nacelle cover support. BACKGROUND

[0002] The fan nacelle cover support is a key structure connecting the nacelle cover and the main frame (or main framework). The nacelle cover is the outer shell protecting the internal core equipment (such as the gear box, generator, main shaft, etc.), while the main frame is the "skeleton" of the entire nacelle, bearing the weight and load of all major equipment. The support bears the weight of the nacelle cover and securely transmits it to the main frame. Such a support usually needs to process a large number of high-precision connecting holes (bolt holes, pin holes) and butt planes thereon.

[0003] In the processing of the fan nacelle cover support, due to its complex structure, numerous shapes and high hole position precision requirements, a special clamping fixture is usually needed to achieve accurate positioning and reliable fixation of the workpiece. In the existing processing method, a large floor-type boring machine or a gantry machining center is often used, together with clamping blocks, pressing plates, screws and positioning pins for clamping and positioning.

[0004] Due to the complex shape of the support, the clamping blocks and pressing plates are used to clamp the support, and the operator usually needs to install and adjust the pressing plates and clamping blocks one by one near the processing area to press the workpiece tightly, which is low in clamping efficiency and time-consuming in adjustment, and the auxiliary preparation time for a single workpiece is relatively long. Moreover, this clamping method is difficult to adapt to one-time positioning of complex structures, and is also prone to repeated positioning errors, thereby increasing the trouble of the operator who needs to repeatedly disassemble and adjust. SUMMARY

[0005] The present application provides a tooling fixture for processing a fan nacelle cover support, which can solve the problem of the existing tooling fixture for processing a fan nacelle cover support, which needs to repeatedly disassemble and adjust clamping blocks, pressing plates and the like during clamping, resulting in low clamping efficiency and time-consuming adjustment.

[0006] A tooling fixture for processing a fan nacelle cover support, comprising a mounting seat, a first mounting plate, a second mounting plate, a third mounting plate, a fourth mounting plate and a plurality of positioning reference elements, wherein the first mounting plate and the second mounting plate are each provided with a positioning reference element vertically, the third mounting plate and the fourth mounting plate are each provided with a positioning reference element horizontally, and the positioning reference elements on the third mounting plate and the fourth mounting plate are perpendicular to each other. The mounting seat is provided with a first positioning assembly, a second positioning assembly and a third positioning assembly, the first positioning assembly is configured to push the workpiece against the positioning reference elements on the third mounting plate, the second positioning assembly is configured to push the workpiece against the positioning reference elements on the fourth mounting plate, and the third positioning assembly is configured to press the workpiece against the vertically arranged positioning reference elements.

[0007] Preferably, the first positioning assembly comprises a fifth mounting plate arranged on the mounting base, a first cylinder fixedly arranged on the fifth mounting plate, a movable block arranged on the top of the fifth mounting plate, a moving plate slidingly connected to the interior of the fifth mounting plate, and a first jacking rod arranged on the movable block, wherein the moving plate is fixedly connected with the driving shaft of the first cylinder, and the movable block is fixedly connected with the moving plate.

[0008] Preferably, the third positioning assembly comprises a pressing rotary cylinder and a pressing plate fixedly arranged on the driving shaft of the pressing rotary cylinder, and the pressing rotary cylinder is fixedly arranged in the interior of the corresponding first mounting plate or second mounting plate.

[0009] Preferably, the third positioning assembly further comprises a pressing head threadedly connected to the pressing plate.

[0010] Preferably, the second positioning assembly comprises a first rotating rod rotatably connected to the second mounting plate, a second rotating rod sleeved on the first rotating rod, a connecting rod fixedly arranged on the second rotating rod, a rotating plate fixedly arranged on the connecting rod, and a second jacking rod arranged on the rotating plate, wherein the second rotating rod can rotate synchronously with the first rotating rod, and the second rotating rod can move axially.

[0011] Preferably, the second positioning assembly further comprises a second cylinder fixedly arranged on the second mounting plate, a rack fixedly arranged on the second cylinder, a gear fixedly arranged on the first rotating rod, and a connecting key fixedly arranged on the second rotating rod, wherein the gear is in meshing connection with the rack, and a key groove is arranged on the inner ring of the first rotating rod and matched with the connecting key for sliding.

[0012] Preferably, the second positioning assembly further comprises a fixing ring fixedly arranged on the second mounting plate, a connecting disc rotatably connected to the fixing ring, a guide rod slidingly connected to the connecting disc, a limiting plate fixedly arranged on the end of the guide rod, and a spring sleeved on the outer side of the guide rod, wherein the guide rod is fixedly connected with the second rotating rod.

[0013] Preferably, the second positioning assembly further comprises a third cylinder fixedly arranged on the second mounting plate, a driving rod slidingly connected to the second mounting plate, a pressing rod fixedly arranged on the driving rod, and an insertion slot arranged on the rotating plate, wherein the driving rod is fixedly connected with the driving shaft of the third cylinder, the bottom of the insertion slot is arranged as an open structure, and the end of the pressing rod is provided with a pulling part larger than the diameter of the insertion slot.

[0014] Preferably, the first jacking rod is provided with external threads and is threadedly connected with the movable block.

[0015] Preferably, the second jacking rod is provided with external threads and is threadedly connected with the rotating plate.

[0016] The present application provides a tool for processing a fan nacelle cover support, which has the following beneficial effects: 1. By the first positioning assembly, the second positioning assembly and the third positioning assembly, respectively, from the front, back, left and right, and up and down three directions, automatic clamping force is applied, and the bottom supporting positioning reference surface and the rear and side positioning reference are matched, realizing the rapid multi-directional automatic clamping of the workpiece. Not only does it replace the traditional clamping method which usually needs to operate a large number of bolts or manually tighten the clamp one by one, but also it can quickly and accurately clamp and position the fan nacelle cover support workpiece, adapt to the machining requirements of its complex structure, and improve the clamping consistency and machining efficiency.

[0017] 2. The first ejector rod, the second ejector rod, the third ejector rod and the positioning reference are all connected by threads, and their extension lengths can be adjusted by screwing to adapt to the slight size differences of different batches of workpiece blanks, ensuring that the workpiece can be stably attached to each positioning reference, and enhancing the adaptability and clamping reliability of the tooling to different workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of a tooling for processing a fan nacelle cover support provided by the present application Figure 1 ; Figure 2 A structure diagram of a tooling for processing a fan nacelle cover support provided by the present application Figure 2 ; Figure 3 A structure diagram of a tooling for processing a fan nacelle cover support provided by the present application Figure 3 ; Figure 4 A structure diagram of a tooling for processing a fan nacelle cover support provided by the present application after removing the workpiece Figure 5 A structure diagram of a first positioning assembly of a tooling for processing a fan nacelle cover support provided by the present application Figure 6 A structure diagram of a second positioning assembly of a tooling for processing a fan nacelle cover support provided by the present application Figure 7 A structure diagram of a third positioning assembly of a tooling for processing a fan nacelle cover support provided by the present application Figure 2 An enlarged structure diagram of position A of the tooling for processing a fan nacelle cover support provided by the present application Figure 8 A structure diagram of a connecting key and a slot of a tooling for processing a fan nacelle cover support provided by the present application

[0019] BRIEF DESCRIPTION OF DRAWINGS 1, mounting seat; 2, first mounting plate; 3, second mounting plate; 4, positioning reference; 5, third mounting plate; 6, fourth mounting plate; 7, first positioning assembly; 701, fifth mounting plate; 702, first cylinder; 703, movable block; 704, moving plate; 705, first top rod; 8, second positioning assembly; 801, connecting rod; 802, rotating plate; 803, pressing rod; 804, second top rod; 805, slot; 806, first rotating rod; 807, second cylinder; 808, rack; 809, gear; 810, second rotating rod; 811, connecting key; 812, fixed ring; 813, connecting disc; 814, guide rod; 815, limiting plate; 816, spring; 817, drive rod; 818, third cylinder; 9, third positioning assembly; 901, downward rotating cylinder; 902, pressing plate; 903, pressing head; 10, third top rod. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0021] As shown in Figures 1 to 8 The embodiment of the present application provides a tool for processing a fan engine cover support, which comprises a mounting seat 1, a first mounting plate 2, a second mounting plate 3, a third mounting plate 5, a fourth mounting plate 6 and a plurality of positioning references 4, the first mounting plate 2, the second mounting plate 3, the third mounting plate 5 and the fourth mounting plate 6 are all fixed on the mounting seat 1, the positioning references 4 are vertically arranged on the first mounting plate 2 and the second mounting plate 3, the positioning references 4 are horizontally arranged on the third mounting plate 5 and the fourth mounting plate 6, and the positioning references 4 on the third mounting plate 5 are perpendicular to the positioning references 4 on the fourth mounting plate 6; the mounting seat 1 is provided with a first positioning assembly 7, a second positioning assembly 8 and a third positioning assembly 9, the first positioning assembly 7 is configured to push the workpiece against the positioning references 4 on the third mounting plate 5, the second positioning assembly 8 is configured to push the workpiece against the positioning references 4 on the fourth mounting plate 6, and the third positioning assembly 9 is configured to press the workpiece against the vertically arranged positioning references 4.

[0022] The positioning reference 4 is vertically arranged on the first mounting plate 2 and the second mounting plate 3 to provide positioning support for the bottom of the workpiece; the positioning reference 4 is horizontally arranged on the third mounting plate 5 and the fourth mounting plate 6 to provide rear side and side edge positioning references for the workpiece in the machining direction; the first positioning assembly 7, the second positioning assembly 8 and the third positioning assembly 9 are respectively used to apply clamping force to the workpiece in the front-rear, left-right and up-down directions to make the workpiece stably adhere to the corresponding positioning reference 4. In use, the workpiece to be machined, i.e. the fan nacelle cover support, is first placed on the support surface formed by the bottom positioning reference 4, and the rear side and one side edge of the workpiece are in abutment with the corresponding positioning reference 4. Then, the third positioning assembly 9 presses the top of the workpiece from top to bottom to complete the clamping and positioning of the workpiece in the vertical direction; the second positioning assembly 8 automatically advances from the opposite side to realize the positioning and clamping of the workpiece in the left-right direction; and the first positioning assembly 7 automatically applies a pushing force from the front side of the workpiece to complete the clamping and positioning in the front-rear direction.

[0023] The tooling realizes comprehensive constraint and stable fixation of the workpiece in multiple directions through the cooperation of multiple positioning references 4 and multiple-degree-of-freedom positioning assemblies. Not only does it replace the traditional clamping mode which usually requires a large number of bolts to be operated one by one or manual tightening of the clamp to reduce clamping adjustment time and operation complexity, but also it can quickly and accurately clamp and position the fan nacelle cover support workpiece to adapt to the machining requirements of its complex structure and improve clamping consistency and machining efficiency.

[0024] In some specific embodiments, as shown in Figure 4 and Figure 5 , the first positioning assembly 7 is used to push the workpiece to move along a horizontal direction until the side surface of the workpiece abuts against the positioning reference 4 on the third mounting plate 5. The first positioning assembly 7 includes a fifth mounting plate 701 arranged on the mounting base 1, a first air cylinder 702 fixedly arranged on the fifth mounting plate 701, a movable block 703 arranged on the top of the fifth mounting plate 701, a moving plate 704 slidingly connected to the inside of the fifth mounting plate 701, and a first top rod 705 arranged on the movable block 703, wherein the moving plate 704 is fixedly connected with the driving shaft of the first air cylinder 702, and the movable block 703 is fixedly connected with the moving plate 704.

[0025] When the first air cylinder 702 operates, the movable block 703 and the first top rod 705 are driven by the moving plate 704 to move linearly, so that the positioning references 4 on both sides of the workpiece abut against the opposite side surfaces of the workpiece. The first top rod 705 is provided with external threads which cooperate with the threaded hole on the movable block 703 to realize advance and retreat adjustment.

[0026] In some specific embodiments, as shown in Figure 2 , Figure 3 and Figure 4The third positioning assembly 9 includes a downward rotating air cylinder 901, a pressing plate 902 fixed on the driving shaft of the downward rotating air cylinder 901, and a pressing head 903 screwed on the pressing plate 902. The downward rotating air cylinder 901 is fixed inside the corresponding first mounting plate 2 or second mounting plate 3.

[0027] The third positioning assembly 9 is used to press the workpiece from above so that the workpiece is tightly attached to the vertical positioning reference 4 on the first mounting plate 2 or second mounting plate 3. The downward rotating air cylinder 901 can drive the pressing plate 902 and the pressing head 903 to rotate above the workpiece and press it, so that the workpiece is tightly pressed on the vertical positioning reference 4. The pressing head 903 on the pressing plate 902 can adjust the extension length, which facilitates fine adjustment of the pressing head 903 so that it is better tightly attached to the surface of the workpiece.

[0028] In some embodiments, as shown in Figure 6 , Figure 7 and Figure 8 The second positioning assembly 8 includes a first rotating rod 806 rotatably connected to the second mounting plate 3, a second rotating rod 810 sleeved on the first rotating rod 806, a connecting rod 801 fixed on the second rotating rod 810, a rotating plate 802 fixed on the connecting rod 801, a second top rod 804 provided on the rotating plate 802, a second air cylinder 807 fixed on the second mounting plate 3, a rack 808 fixed on the second air cylinder 807, a gear 809 fixed on the first rotating rod 806, and a connecting key 811 fixed on the second rotating rod 810. The gear 809 is in meshing connection with the rack 808. A key groove is provided on the inner circle of the first rotating rod 806 to cooperate with the sliding of the connecting key 811, so as to realize the rotation and axial movement of the second rotating rod 810.

[0029] The second air cylinder 807 drives the rack 808 to move, thereby rotating the gear 809 and the first rotating rod 806. Through the key connection, the second rotating rod 810, the connecting rod 801, and the rotating plate 802 rotate, so that the second top rod 804 swings towards or away from the direction of the workpiece.

[0030] In some embodiments, as shown in Figure 6 and Figure 7 The second positioning assembly 8 further includes a fixing ring 812 fixed on the second mounting plate 3, a connecting disc 813 rotatably connected to the fixing ring 812, a guide rod 814 slidably connected to the connecting disc 813, a limiting plate 815 fixed on the end of the guide rod 814, and a spring 816 sleeved on the outer side of the guide rod 814. The guide rod 814 is fixedly connected with the second rotating rod 810.

[0031] When the rotating plate 802 moves so that the second top rod 804 abuts against the workpiece, the movement of the second rotating rod 810 compresses the spring 816. When the pressing rod 803 moves away from the second mounting plate 3, the rotating plate 802 loses pressure, and under the elastic action of the spring 816, the second rotating rod 810, the connecting rod 801 and the rotating plate 802 are pushed to move away from the second mounting plate 3, so that the second top rod 804 is separated from the surface of the workpiece, and a gap is left between the end of the second top rod 804 and the second mounting plate 3, thereby facilitating the subsequent rotation of the rotating plate 802.

[0032] In some embodiments, as shown in Figure 6 and Figure 7 The second positioning assembly 8 further comprises a third cylinder 818 fixed on the second mounting plate 3, a driving rod 817 slidingly connected to the second mounting plate 3, a pressing rod 803 fixed on the driving rod 817, and a slot 805 formed in the rotating plate 802. The driving rod 817 is fixedly connected to the driving shaft of the third cylinder 818, the bottom of the slot 805 is provided with an open structure, and one end of the pressing rod 803 is provided with a pulling part larger than the diameter of the slot 805. When the spring 816 pushes the second rotating rod 810, the rotating plate 802 and other components to reset, the distance between the side of the rotating plate 802 away from the second mounting plate 3 and the second mounting plate 3 is smaller than the distance between the pulling part and the second mounting plate 3, so as to ensure that the slot 805 on the rotating plate 802 can always be inserted with the pressing rod 803 when the rotating plate 802 rotates freely.

[0033] When the rotating plate 802 rotates to the horizontal state for clamping, the slot 805 and the pressing rod 803 complete the insertion operation. The third cylinder 818 operates, the driving rod 817 drives the pressing rod 803 to move, and the rotating plate 802 is pushed to move to the side of the second mounting plate 3 through the movement of the pulling part. The second top rod 804 moves linearly along the direction towards the workpiece together with the rotating plate 802, so as to abut against the workpiece.

[0034] When it is needed to release the workpiece, the third cylinder 818 pushes out the pressing rod 803 to move away from the second mounting plate 3. Under the action of the spring 816, the rotating plate 802 and other components are reset, and the rotating plate 802 can rotate freely away from the workpiece.

[0035] In some embodiments, as shown in Figure 4 , Figure 5 and Figure 6The first top rod 705 is provided with external threads and is threadedly connected with the movable block 703, and the first top rod 705 cooperates with the upper nut of the movable block 703 to realize advance and retreat adjustment to adapt to the slight difference of different batches of blanks. The second top rod 804 is provided with external threads and is threadedly connected with the rotating plate 802 to realize advance and retreat adjustment of the second top rod 804. The third top rod 10 is threadedly connected with the fourth mounting plate 6, and the third top rod 10 is arranged in parallel with the positioning reference element 4 on the third mounting plate 5, and the third top rod 10 can be used as an auxiliary clamping positioning point. The positioning reference element 4 is provided with external threads (the thread structure is not shown in the present application), and the positioning reference element 4 is threadedly connected with the corresponding first mounting plate 2, second mounting plate 3, third mounting plate 5 or fourth mounting plate 6, so that the extension length thereof can be adjusted or replaced to ensure the levelness when the workpiece is clamped.

[0036] In order to facilitate the understanding of the present application by those skilled in the art, the working principle of the present application will be briefly described in combination with a specific application scenario: The workpiece is placed on the positioning reference elements 4 of the first mounting plate 2 and the second mounting plate 3 to form a support surface, and the rear side of the workpiece abuts against the positioning reference element 4 of the third mounting plate 5, and one side edge abuts against the positioning reference element 4 of the fourth mounting plate 6.

[0037] The third positioning assembly 9 is started, the lower pressing cylinder 901 drives the pressing plate 902 to rotate to the upper side of the workpiece and press downward, and the pressing head 903 presses the workpiece tightly on the bottom support reference. The second positioning assembly 8 is started, the second cylinder 807 drives the first rotating rod 806 to rotate through the gear 809 and rack 808, drives the rotating plate 802 and the second top rod 804 to swing to align with the side surface of the workpiece, at this time, the insertion slot 805 is inserted with the pressing rod 803. The third cylinder 818 pushes the pressing rod 803 to pull the rotating plate 802 to move to one side of the second mounting plate 3, so that the second top rod 804 tightly presses the workpiece, and forces the workpiece to tightly abut against the lateral reference of the fourth mounting plate 6. The first positioning assembly 7 is started, the first cylinder 702 pushes the movable block 703 and the first top rod 705 to advance, and the first top rod 705 applies a pushing force from the front side of the workpiece, so that the rear side of the workpiece completely abuts against the rear side reference of the third mounting plate 5. At this time, the workpiece is tightly abutted on the corresponding positioning reference element 4 in the Z direction, X direction and Y direction, and is completely constrained, so that subsequent machining can be carried out.

[0038] The tooling realizes comprehensive constraint and stable fixation of the workpiece in multiple directions through the cooperation of multiple positioning reference elements 4 and multiple-degree-of-freedom positioning assemblies. Not only does it replace the traditional clamping method which usually needs to operate a large number of bolts or manually tighten the clamps one by one to reduce the clamping adjustment time and operation complexity, but also it can quickly and accurately clamp and position the workpiece of the fan nacelle support, adapt to the machining requirements of the complex structure, and improve the clamping consistency and machining efficiency.

[0039] The above disclosed are only several specific embodiments of the present application, but the embodiments of the present application are not limited thereto, and any changes that can be thought of by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. A tooling for machining a wind turbine nacelle cover support, comprising a mounting base (1), a first mounting plate (2), a second mounting plate (3), a third mounting plate (5), a fourth mounting plate (6), and a plurality of positioning reference parts (4), characterized in that, The first mounting plate (2) and the second mounting plate (3) are both vertically provided with positioning reference parts (4), and the third mounting plate (5) and the fourth mounting plate (6) are both horizontally provided with positioning reference parts (4). The positioning reference parts (4) on the third mounting plate (5) and the positioning reference parts (4) on the fourth mounting plate (6) are perpendicular to each other. The mounting base (1) is provided with a first positioning component (7), a second positioning component (8) and a third positioning component (9). The first positioning component (7) is configured to push the workpiece against the positioning reference member (4) on the third mounting plate (5). The second positioning component (8) is configured to push the workpiece against the positioning reference member (4) on the fourth mounting plate (6). The third positioning component (9) is configured to press the workpiece down against the vertically set positioning reference member (4).

2. The tooling for machining a wind turbine nacelle cover support as described in claim 1, characterized in that, The first positioning component (7) includes a fifth mounting plate (701) on the mounting base (1), a first cylinder (702) fixed on the fifth mounting plate (701), a movable block (703) on the top of the fifth mounting plate (701), a movable plate (704) slidably connected inside the fifth mounting plate (701), and a first push rod (705) on the movable block (703). The movable plate (704) is fixedly connected to the drive shaft of the first cylinder (702), and the movable block (703) is fixedly connected to the movable plate (704).

3. The tooling for machining a wind turbine nacelle cover support as described in claim 2, characterized in that, The third positioning component (9) includes a downward rotary cylinder (901) and a pressure plate (902) fixed on the drive shaft of the downward rotary cylinder (901). The downward rotary cylinder (901) is fixed inside the corresponding first mounting plate (2) or second mounting plate (3).

4. The tooling for machining a wind turbine nacelle cover support as described in claim 3, characterized in that, The third positioning component (9) also includes a pressure head (903) threaded onto the pressure plate (902).

5. The tooling for machining a wind turbine nacelle cover support as described in claim 1, characterized in that, The second positioning component (8) includes a first rotating rod (806) rotatably connected to the second mounting plate (3), a second rotating rod (810) sleeved on the first rotating rod (806), a connecting rod (801) fixed on the second rotating rod (810), a rotating plate (802) fixed on the connecting rod (801), and a second top rod (804) provided on the rotating plate (802). The second rotating rod (810) can rotate synchronously with the first rotating rod (806), and the second rotating rod (810) can move axially.

6. The tooling for machining a wind turbine nacelle cover support as described in claim 5, characterized in that, The second positioning component (8) further includes a second cylinder (807) fixed on the second mounting plate (3), a rack (808) fixed on the second cylinder (807), a gear (809) fixed on the first rotating rod (806), and a connecting key (811) fixed on the second rotating rod (810). The gear (809) meshes with the rack (808), and the inner ring of the first rotating rod (806) is provided with a keyway that slides with the connecting key (811).

7. The tooling for machining a wind turbine nacelle cover support as described in claim 6, characterized in that, The second positioning component (8) further includes a fixing ring (812) fixed on the second mounting plate (3), a connecting plate (813) rotatably connected to the fixing ring (812), a guide rod (814) slidably connected to the connecting plate (813), a limiting plate (815) fixed to the end of the guide rod (814), and a spring (816) sleeved on the outside of the guide rod (814). The guide rod (814) is fixedly connected to the second rotating rod (810).

8. The tooling for machining a wind turbine nacelle cover support as described in claim 7, characterized in that, The second positioning component (8) further includes a third cylinder (818) fixed on the second mounting plate (3), a drive rod (817) slidably connected to the second mounting plate (3), a pressure rod (803) fixed on the drive rod (817), and a slot (805) opened on the rotating plate (802). The drive rod (817) is fixedly connected to the drive shaft of the third cylinder (818). The bottom of the slot (805) is set as an open structure. One end of the pressure rod (803) is provided with a pulling part larger than the diameter of the slot (805).

9. The tooling for machining a wind turbine nacelle cover support as described in claim 2, characterized in that, The first push rod (705) is provided with external threads and is threadedly connected to the movable block (703).

10. The tooling for machining a wind turbine nacelle cover support as described in claim 5, characterized in that, The second push rod (804) is provided with external threads and is threadedly connected to the rotating plate (802).

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