A gas turbine cylinder block machining positioning device

Abstract

This invention discloses a gas turbine cylinder block machining positioning device, belonging to the field of machining clamping technology. The gas turbine cylinder block includes an outer cylinder, an inner cylinder, a star-shaped support, and a support ring. Multiple height-adjustable support mechanisms include support seats and movable supports. The movable supports are provided with normal positioning parts and tangential positioning parts. The top protection mechanism includes a guide plate, a first variable diameter plate, multiple sector plates, and multiple second positioning parts that can move synchronously radially. The guide plate is provided with multiple first straight grooves and second straight grooves. The first variable diameter plate is provided with multiple first arc-shaped grooves and connected to a second drive assembly. The multiple sector plates are stacked, and the sector plates are provided with first pins that cooperate with the first straight grooves and first arc-shaped grooves and second pins that cooperate with the second straight grooves. This invention uses height-adjustable support mechanisms to position the outer cylinder, resist shear force and axial force, and ensure support rigidity. It also cooperates with the top protection mechanism to make the axes of the support ring, outer cylinder, and inner cylinder collinear.

Description

Technical Field

[0001] This invention relates to the field of machining clamping tooling technology, specifically to a positioning device for machining a gas turbine cylinder block. Background Technology

[0002] As a high-end component of energy conversion systems, gas turbines undertake multiple functions such as energy conversion, structural support, and thermal management. At present, the market has a very urgent need for the processing of large gas turbines.

[0003] The exhaust cylinder of the gas turbine has complex features. The cylinder body is a split structure, with the inner and outer cylinders connected by a star-shaped bracket. Both the inner and outer cylinders are large thin-walled cylindrical structures. In the actual milling and turning process, in order to effectively ensure product accuracy, it is necessary to use a corresponding positioning device to position the outer cylinder and the star-shaped bracket at a specific relative height in the normal and tangential directions. The positioning device not only needs to effectively resist the shear force and axial force during processing, but also needs to have sufficient support rigidity to avoid deformation and misalignment of the inner and outer cylinders caused by vibration during processing.

[0004] Furthermore, because large, thin-walled cylindrical inner cylinders are prone to the entry of micro-chips (such as iron filings and cutting fluid), which damage the inner wall of the inner cylinder, and this space is difficult to clean, it causes contamination of the inner cavity of the inner cylinder.

[0005] Therefore, designing a gas turbine cylinder block machining positioning device that can improve machining accuracy and efficiency, resist workpiece deformation, ensure workpiece positioning, avoid damage and contamination of the inner cylinder cavity, and has strong versatility is an urgent problem to be solved at this stage. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a gas turbine cylinder block machining positioning device. Utilizing multiple circumferentially distributed height-adjustable support mechanisms, the outer cylinder and the star-shaped support are positioned at a specific relative height in the normal and tangential directions. This effectively resists shearing and axial forces during machining and ensures support rigidity. The star-shaped support, support ring, height-adjustable support mechanisms, and top protection mechanism work together to ensure concentricity of the support ring, outer cylinder, and inner cylinder, guaranteeing machining accuracy. Simultaneously, the top protection mechanism effectively prevents iron filings and cutting fluid from entering the inner cylinder cavity during machining, avoiding damage and contamination, thus improving machining efficiency and product quality.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] This invention provides a gas turbine cylinder block machining positioning device. The gas turbine cylinder block includes an outer cylinder, an inner cylinder, and a star-shaped support. The inner cylinder is located inside the outer cylinder, and the inner cylinder and the outer cylinder are connected by the star-shaped support. A support ring is provided on the outside of the outer cylinder. One end of the star-shaped support passes through the outer cylinder and is connected to the support ring. The other end of the star-shaped support is connected to the inner wall of the inner cylinder and forms a first positioning part.

[0009] A height-adjustable support mechanism includes a support base fixedly connected to the support ring, a movable support on the support base capable of moving in the vertical direction, and a first driving component between the movable support and the support base capable of driving the movable support to move; a normal positioning part and a tangential positioning part are provided between the movable support and the outer cylinder, the normal positioning part being able to position the relative position of the movable support and the outer cylinder in the radial direction of the outer cylinder, and the tangential positioning part being able to position the relative position of the movable support and the outer cylinder in a direction tangential to the surface of the outer cylinder;

[0010] A top protective mechanism is located inside the inner cylinder. The top protective mechanism includes a guide plate, a first variable diameter plate, multiple sector plates, and multiple second positioning parts. The guide plate has multiple first straight grooves and multiple second straight grooves, all distributed circumferentially and extending radially. The first variable diameter plate has multiple circumferentially distributed first arc-shaped grooves, connected to a second driving assembly that drives its rotation. The multiple sector plates are distributed circumferentially, with adjacent sector plates overlapping. Each sector plate has a first pin and a second pin; the first pin engages with the first straight groove and the first arc-shaped groove, respectively, and the second pin engages with the second straight groove. Rotation of the first variable diameter plate can drive the multiple sector plates to move radially synchronously. The multiple second positioning parts are distributed circumferentially, each connected to a third driving assembly, which drives the multiple second positioning parts to move radially synchronously. When all the second positioning parts engage with the first positioning parts, the axis of the top protective mechanism is collinear with the axis of the support ring.

[0011] As a preferred technical solution, the normal positioning part includes a plurality of magnetic blocks disposed on the top of the movable support; the tangential positioning part includes a limiting pin fixed on the magnetic blocks, and the outer cylinder is provided with a limiting hole, the limiting pin extending into the limiting hole.

[0012] As a preferred technical solution, the top of the movable support is provided with a mounting plate, and the upper surface of the mounting plate is provided with a magnetic block sliding groove, and the magnetic block is fixed in the magnetic block sliding groove by screws;

[0013] And / or, the upper end of the outer cylinder has a flange, the magnetic block abuts against the lower surface of the flange, and the flange hole on the flange forms the limiting hole;

[0014] And / or, the movable support is provided with two racks arranged opposite each other, the first drive assembly includes a first gear, a second gear and a first servo motor, the first gear meshes with one of the racks, the second gear meshes with the other rack, the first gear meshes with the second gear, and the first servo motor is connected to one of the first gear or the second gear in a transmission connection;

[0015] And / or, the support base is provided with an elongated hole, through which a screw passes and is threaded to the support ring;

[0016] And / or, guide posts are provided on both sides of the top of the support base, and the movable support is sleeved on the guide posts.

[0017] As a preferred technical solution, the second positioning part is configured as a moving block with an arc-shaped surface, and the first positioning part is configured as a cylindrical surface that matches the arc-shaped surface.

[0018] As a preferred technical solution, the top protection mechanism further includes a second variable diameter plate and multiple radially arranged guide rails. The second variable diameter plate is provided with multiple circumferentially distributed second arc-shaped grooves. The second variable diameter plate is connected to a third servo motor that drives its rotation. The moving block is provided on the guide rails and can move along the guide rails. The moving block is provided with a third pin, which cooperates with the second arc-shaped grooves.

[0019] And / or, the axes of the outer cylinder, the inner cylinder, the guide plate, the first variable diameter plate, and the multiple sector plates are all collinear;

[0020] And / or, strain gauges are provided on the outer side of the sector plate;

[0021] And / or, the first straight groove, the first arc groove, and the first pin are all in one-to-one correspondence, and the second straight groove and the second pin are in one-to-one correspondence;

[0022] And / or, the second straight groove is located radially outside the first straight groove;

[0023] And / or, the second drive component includes a second servo motor, the output shaft of which is keyed to the first variable diameter plate.

[0024] As a preferred technical solution, it also includes multiple positioning and adjusting mechanisms, which are distributed circumferentially. Each positioning and adjusting mechanism includes an adjusting support fixed to the support ring and a guide connecting plate fixed to the outer wall of the outer cylinder. The guide connecting plate is rotatably connected to the adjusting support via a positioning shaft, and the positioning shaft is provided with a positioning component capable of positioning the adjusting support and the guide connecting plate.

[0025] As a preferred technical solution, the adjusting support base is provided with a positioning groove that matches the guide connecting plate, and the guide connecting plate is embedded in the positioning groove; the adjusting support base is provided with positioning pin holes on both sides of the positioning groove, the guide connecting plate is provided with a limiting groove, and the positioning shaft passes through the two positioning pin holes and the limiting groove; the positioning assembly includes a locking nut threaded to both ends of the positioning shaft, and a positioning block is provided between the locking nut and the adjusting support base, the positioning block passing through the positioning pin hole and extending into the positioning groove; after tightening the locking nut, the positioning block abuts against the adjusting support base and the guide connecting plate respectively.

[0026] As a preferred technical solution, the adjusting support base is fixedly connected to the support ring by screws;

[0027] And / or, the outer wall of the outer cylinder is provided with T-shaped grooves spaced circumferentially, and the guide connecting plate is embedded in the T-shaped grooves.

[0028] As a preferred technical solution, it also includes multiple side support mechanisms, which are distributed circumferentially; each side support mechanism includes a side support seat fixed to the support ring, a protective block is provided on the side support seat, the protective block abuts against the outer wall of the outer cylinder, and an adjustment component is provided between the protective block and the side support seat to control the movement of the protective block in the direction of approaching or moving away from the outer wall of the outer cylinder.

[0029] As a preferred technical solution, the top of the side support is provided with a support platform, the adjustment component includes an adjustment hole provided on the support platform, an adjustment rod provided in the adjustment hole with clearance fit therein, and a protective block provided at one end of the adjustment rod;

[0030] And / or, the protective block is made of a flexible material.

[0031] The beneficial effects of this invention are as follows:

[0032] 1. This invention utilizes multiple circumferentially distributed height-adjustable support mechanisms to provide stable support force to the outer cylinder and the star-shaped support at a specific relative height. It also utilizes normal and tangential positioning parts to simultaneously position the outer cylinder and the star-shaped support in the normal and tangential directions, effectively resisting shear forces and axial forces during machining. This ensures smooth machining of large gas turbine cylinder blocks on boring and milling machines, guarantees support rigidity, and allows for fast clamping speed. While the height-adjustable support mechanism positions the outer cylinder based on the support ring, the top protection mechanism positions the inner cylinder based on the star-shaped support. The combination of these two mechanisms enables the support ring, outer cylinder, and inner cylinder to... The concentric design ensures machining accuracy. Simultaneously, the multiple fan-shaped plates of the top protective mechanism, in conjunction with the guide plate and the first diameter-changing plate, can expand radially synchronously to seal the inner cylinder. This effectively prevents iron filings and cutting fluid from entering the insulation cotton inside the inner cylinder during milling and turning, avoiding damage and contamination, and improving machining efficiency and product quality. The height adjustment support mechanism and the top protective mechanism work together to cover the positioning and machining needs of all current products, offering strong versatility, improving production efficiency, saving on the investment cost of clamping devices, reducing the time spent changing clamping devices on the machine tool, and increasing machine tool uptime.

[0033] 2. The normal positioning part of this invention uses magnetic attraction to achieve normal positioning of the outer cylinder and the star-shaped bracket. Compared with the traditional hydraulic pressure plate or ordinary pressure plate, it does not require occupying the space outside the outer cylinder, especially the space above the outer cylinder, thus avoiding interference. At the same time, the magnetic blocks are magnetized when energized and demagnetized when de-energized. The attraction force generated by a set of magnetic blocks is not less than 7 tons, which is much greater than the pressure force of conventional pressure plates on the product. Processing and use are more convenient and faster, the cost is low, the product loading and unloading time is shortened, and the changeover efficiency is improved.

[0034] 3. In the positioning adjustment mechanism of the present invention, the adjusting support seat and the guide connecting plate are rotatably connected by a positioning shaft. After the relative position of the adjusting support seat and the guide connecting plate is adjusted, the adjusting support seat and the guide connecting plate can be locked and fixed by the locking nut and the positioning block. This can limit the relative displacement of the outer cylinder and the star bracket in the vertical direction, bear the axial force, support the outer cylinder, prevent the outer cylinder from generating rotational force during processing, resist shear force, increase processing rigidity, and allow the machining parameters of the boring and milling machine to be set to the maximum, thereby improving processing efficiency.

[0035] 4. The protective block in the side support mechanism of the present invention abuts against the outer wall of the outer cylinder, which can reduce the vibration of the outer cylinder during processing and reduce the processing deformation problem caused by insufficient support rigidity of the outer cylinder. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the gas turbine cylinder block machining and positioning device of the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of the height adjustment support mechanism in the middle;

[0038] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0039] Figure 4 for Figure 2 A schematic diagram of the gear and rack structure in the diagram;

[0040] Figure 5 for Figure 2 Top view;

[0041] Figure 6 for Figure 1 Top view of the top protective mechanism;

[0042] Figure 7 for Figure 6 A bottom view;

[0043] Figure 8 for Figure 6 A schematic diagram of the structure of the first variable diameter plate in the middle;

[0044] Figure 9 for Figure 6 A sectional view;

[0045] Figure 10 for Figure 1 A schematic diagram of the positioning adjustment mechanism in the middle;

[0046] Figure 11 for Figure 10 Side view;

[0047] Figure 12 for Figure 11 Sectional view along the BB direction;

[0048] Figure 13 for Figure 10 Rear view;

[0049] Figure 14 for Figure 13 A cross-sectional view along the CC direction;

[0050] Figure 15 for Figure 1 A schematic diagram of the side support mechanism.

[0051] In the diagram: 11-Outer cylinder, 111-Limiting hole, 112-T-slot, 12-Inner cylinder, 13-Star bracket, 14-Support ring, 2-Height adjustment support mechanism, 21-Support base, 211-Guide column, 22-Moving support, 221-Rack, 23-First drive assembly, 231-First gear, 232-Second gear, 233-First servo motor, 24-Magnetic block, 25-Limiting pin, 26-Magnetic block sliding groove, 3-Top protection mechanism, 31-Guide plate, 311-First straight groove, 312-Second straight groove, 32-First variable diameter plate, 321-First arc groove, 322-Second servo motor, 33-Sector plate, 331-First 332-Second pin, 333-Strain gauge, 34-Second positioning part, 35-Second diameter reducing plate, 351-Second arc groove, 352-Third servo motor, 36-Moving block, 361-Guide rail, 362-Third pin, 363-Nylon block, 364-Support sleeve, 4-Positioning adjustment mechanism, 41-Adjusting support seat, 411-Positioning groove, 412-Positioning pin hole, 42-Guide connecting plate, 421-Limiting groove, 422-Locking bolt, 423-Setting bolt, 43-Positioning shaft, 44-Locking nut, 45-Positioning block, 5-Side support mechanism, 51-Side support seat, 52-Protective block, 53-Adjusting rod, 54-Support platform. Detailed Implementation

[0052] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0053] Please refer to Figures 1-15 This invention provides an embodiment of a gas turbine cylinder block machining positioning device, wherein the gas turbine cylinder block includes an outer cylinder 11, an inner cylinder 12, and a star-shaped support 13. The inner cylinder 12 is located inside the outer cylinder 11, and the inner cylinder 12 and the outer cylinder 11 are connected by the star-shaped support 13. The star-shaped support 13 has a multi-arm radial connection structure. A support ring 14 is provided on the outside of the outer cylinder 11. The axes of the star-shaped support 13 and the support ring 14 are collinear (i.e., concentric). One end of the star-shaped support 13 passes through the outer cylinder 11 and is fixedly connected to the support ring 14. The other end of the star-shaped support 13 extends into the inner cylinder 12 and forms a first positioning part. The star-shaped support 13 connects the outer cylinder 11 and the inner cylinder 12.

[0054] This embodiment includes a top protective mechanism 3 and six height-adjustable support mechanisms 2 evenly distributed circumferentially. Each height-adjustable support mechanism 2 includes a support base 21 fixedly connected to a support ring 14. The support base 21 is provided with a movable support 22 that can be adjusted in the vertical direction. The first drive assembly 23 drives the movable support 22 to move. Between the movable support 22 and the outer cylinder 11, there is a normal positioning part that can position the relative position of the movable support 22 and the outer cylinder 11 in the normal direction (i.e., the radial direction of the outer cylinder 11) and a tangential positioning part that can position the relative position of the movable support 22 and the outer cylinder 11 in the tangential direction (i.e., the direction tangential to the surface of the outer cylinder 11). This allows the height-adjustable support mechanism 2 to provide stable support force for the outer cylinder 11 and the star-shaped bracket 13 at a specific relative height. The normal positioning part and the tangential positioning part are used to effectively resist the shear force and axial force during processing, ensuring support rigidity, and making the outer cylinder 11, the support ring 14, and the star-shaped bracket 13 collinear (i.e. concentric).

[0055] Meanwhile, the top protective mechanism 3 is located inside the inner cylinder 12; the top protective mechanism 3 includes a guide plate 31, a first variable diameter plate 32, six circumferentially distributed fan-shaped plates 33, and three second positioning parts 34; the guide plate 31 is provided with six first straight grooves 311 and six second straight grooves 312, all of which are distributed circumferentially, and both the first straight grooves 311 and the second straight grooves 312 extend radially, and are located on the same radial direction, so as to facilitate their cooperation with the first pin 331 and the second pin 332 respectively; the first variable diameter plate 32 is provided with six circumferentially distributed first arc-shaped grooves. 321, the first variable diameter plate 32 is connected to a second drive assembly that drives its rotation; six sector plates 33 are distributed circumferentially, and adjacent sector plates 33 are overlapped, that is, the edges of adjacent sectors overlap to form a layered cover, so that no gap is generated between adjacent sector plates 33 when the sector plates 33 move radially outward; the sector plates 33 are provided with a first pin 331 and a second pin 332, the first pin 331 passes through the first arc-shaped groove 321 of the first variable diameter plate 32 and is confined in the first straight groove 311, the first pin 331 is clearance-fitted with the first straight groove 311 and the first arc-shaped groove 321 respectively, and the first arc-shaped groove 321 can drive the first pin when it rotates. Action 331 causes the first pin 331 to reciprocate along the first straight groove 311; the second pin 332 is clearance-fitted with the second straight groove 312; when the first variable diameter plate 32 rotates, the cam trajectory formed by the first arc groove 321 can drive the first pin 331 and the second pin 332 to move synchronously radially along the first straight groove 311 and the second straight groove 312 respectively, thereby driving the six sector plates 33 to move synchronously radially until the outer edges of the six sector plates 33 respectively abut against the inner wall of the inner cylinder 12, thus positioning and sealing the inner cylinder 12; before this, the three second positioning parts 34 move synchronously radially outward and all cooperate with the first positioning parts, While positioning the top protective mechanism 3 relative to the star-shaped bracket 13, the axis of the top protective mechanism 3 is made collinear with the axis of the star-shaped bracket 13, that is, the inner cylinder 12 is concentric with the star-shaped bracket 13, the support ring 14, and the outer cylinder 11, ensuring processing accuracy and improving processing stability. Compared with the traditional straight groove plus stop block scheme, the first arc groove 321 has no acceleration change point, which can realize the continuous and smooth movement of the fan-shaped plate 33. The top protective machine can change the diameter according to the different specifications of the inner cylinder 12, and the radial movement of the fan-shaped plate 33 is continuously adjustable. Specification switching can be achieved at zero cost, realizing the unity of "flexible manufacturing" and "precise control".

[0056] In other embodiments, the number of arms of the star-shaped bracket 13 and the number of height adjustment support mechanisms 2 can be set to other values, with the arm of the star-shaped bracket 13 and the height adjustment support mechanism 2 corresponding one-to-one; the number of fan-shaped plates 33, the number of first straight grooves 311, the number of second straight grooves 312, and the number of first arc-shaped grooves 321 can all be set to other values, with the multiple fan-shaped plates 33 being able to expand radially synchronously to seal the inner cylinder 12; the number of second positioning parts 34 can be set to other values, with the top protection mechanism 3 being able to be relatively fixed to the star-shaped bracket 13 after cooperating with the first positioning part.

[0057] It should be noted that the circumferential, radial, and axial directions in this invention are all based on the axis of the gas turbine cylinder block; the outer cylinder 11 is cylindrical, and the normal direction is the direction perpendicular to the outer surface of the outer cylinder 11, specifically the extension direction of the line connecting any point on the surface of the outer cylinder 11 and the central axis of the outer cylinder 11, which is the radial direction of the outer cylinder 11; the tangential direction is the direction parallel to the outer surface of the outer cylinder 11 and perpendicular to the normal direction, specifically the tangential plane formed by all directions perpendicular to the normal direction of any point on the surface of the outer cylinder 11.

[0058] Further, please refer to Figures 6-9 The second positioning part 34 is preferably a movable block 36 with an arc-shaped surface. Correspondingly, the first positioning part is a cylindrical surface that matches the arc-shaped surface. When the arc-shaped surfaces on multiple movable blocks 36 simultaneously abut against the cylindrical surface, the top protection mechanism 3 and the star-shaped bracket 13 can be positioned while ensuring that the top protection mechanism 3 and the star-shaped bracket 13 are coaxial. Furthermore, in order to better improve the positioning effect between the second positioning part 34 and the first positioning part, the lower end of the cylindrical surface can be provided with a horizontally arranged annular surface, that is, forming a stepped structure. The lower edge of the second positioning part 34 abuts against the annular surface, which can more stably position the top protection mechanism 3 in the horizontal direction.

[0059] Specifically, please refer to Figures 6-9The top protective mechanism 3 also includes a second variable diameter plate 35 and multiple radially arranged guide rails 361, similar in structure to the first variable diameter plate 32. The second variable diameter plate 35 has multiple circumferentially distributed second arc-shaped grooves 351. A third servo motor 352, which drives the second variable diameter plate 35 to rotate, is connected to the second variable diameter plate 35. A moving block 36 is mounted on the guide rails 361 and can move along them. A third pin 362 is provided on the moving block 36, which is embedded in the second arc-shaped grooves 351 and has a clearance fit with them. When the third servo motor 352 drives the second variable diameter plate 35 to rotate, the second arc-shaped grooves 351... The formed cam trajectory can drive the third pin 362 to move radially along the guide rail 361, thereby realizing the synchronous radial movement of multiple second positioning parts 34; preferably, a nylon block 363 is provided at the radial outer edge of the moving block 36, and the outer surface of the nylon block 363 forms an arc surface, which has better friction and can improve the positioning effect; more specifically, the second variable diameter plate 35 and the first variable diameter plate 32 can be connected by a bearing structure and can rotate relative to each other; a support sleeve 364 is provided below the guide plate 31, and the guide rail 361 and the third servo motor 352 are both set on the support sleeve 364.

[0060] In this embodiment, please refer to Figure 2 , Figure 4 and Figure 5 The normal positioning part includes several magnetic blocks 24 disposed on the top of the movable support 22. When the magnetic blocks 24 are energized, they generate a normal magnetic attraction force on the outer cylinder 11, positioning the support ring 14 and the outer cylinder 11 in the normal direction.

[0061] Specifically, please refer to Figure 2 and Figure 5 The movable support 22 is equipped with a mounting plate on its top, and the upper surface of the mounting plate is provided with a magnetic block sliding groove 26. In actual use, the magnetic block 24 can move within the magnetic block sliding groove 26, making it easy to adjust the magnetic block 24 to a suitable position, ensuring the maximum contact area between the outer cylinder 11 and the magnetic block 24, thereby obtaining the maximum magnetic attraction effect. Then, the magnetic block 24 is fixed in the magnetic block sliding groove 26 by screws, ensuring that the magnetic block 24 generates a stable magnetic attraction force on the outer cylinder 11. In actual use, according to calculations, a set of magnetic blocks 24 can generate a magnetic force of no less than 7 tons, which is much greater than the clamping force of conventional pressure plates on the product. In addition, the magnetic block 24 generates magnetic force faster and is more convenient to use. The shape of the magnetic block 24 can be processed according to actual needs, and the magnetic block 24 can be replaced when damaged, which is inexpensive. At the same time, compared with traditional hydraulic pressure plates and ordinary pressure plate structures, it does not occupy the space above the outer cylinder 11, does not cause interference, does not require a hydraulic station, and does not cause pressure drop failure. The operation is also more time-saving and labor-saving.

[0062] Furthermore, since the difference between the magnetic force generated by the magnetically conductive block 24 in the normal (perpendicular to the adsorption surface) and tangential directions can be more than 10 times, a tangential positioning part is also required to prevent the outer cylinder 11 from slipping during processing. Please refer to [reference needed]. Figure 1 , Figure 2 , Figure 4 and Figure 5 The tangential positioning part includes a limiting pin 25 fixed on the magnetic block 24. The outer cylinder 11 is provided with a limiting hole 111. The limiting pin 25 extends into the limiting hole 111 and is in clearance fit with the limiting hole 111. The limiting pin 25 extends along the normal direction to position the support ring 14 and the outer cylinder 11 tangentially to prevent the outer cylinder 11 from sliding sideways. Correspondingly, the upper end of the outer cylinder 11 has a flange. The magnetic block 24 abuts against the lower surface of the flange. The flange hole on the flange forms the limiting hole 111. The normal positioning part and the tangential positioning part cooperate to completely restrict the movement of the outer cylinder 11 in all directions.

[0063] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 The movable support 22 is equipped with two opposing racks 221. The first drive assembly 23 includes a first gear 231, a second gear 232, and a first servo motor 233. The first gear 231 meshes with one rack 221, and the second gear 232 meshes with the other rack 221. The output shaft of the first servo motor 233 is connected to the first gear 231 for transmission. The first servo motor 233 drives the first gear 231 to rotate, which in turn drives one rack 221 to move and the second gear 232 to rotate. The second gear 232 then drives the other rack 221 to move, thus achieving synchronous movement of the two racks 221. The radial force of the two gears is neutralized by the reaction force of the two symmetrically arranged racks 221, thus canceling out the lateral force. No limit is required. Furthermore, the two racks 221 are structurally symmetrical and have symmetrical loads. The resulting symmetrical force flow inhibits the bending deformation of the racks 221, achieving higher rigidity. In real-time use, the two gears mesh with the two racks 221 respectively through preload, with a theoretical backlash ≤0.005mm, achieving mechanical backlash elimination, which is more stable than spring preload. In other embodiments, the first servo motor 233 can also be connected only to the second gear 232, which can also synchronously drive the two racks 221 to move and adjust the height of the moving support 22.

[0064] In actual production, please refer to Figure 1Since the outer diameter of the outer cylinder 11 gradually decreases in the vertical downward direction, both the support base 21 and the movable support 22 are inclined to ensure the stability of the positioning. The moving direction of the movable support 22 also has an angle with the vertical direction. When the relative height between the support ring 14 and the outer cylinder 11 changes, the connection position between the support base 21 and the support ring 14 will also change in the radial direction. In order to facilitate adjustment, an elongated hole is provided on the support base 21. After the support base 21 is adjusted to a suitable position in the radial direction, the screw can still pass through the elongated hole and be threaded to the support ring 14. The support base 21 will not move in other directions, which facilitates the fixed connection between the support base 21 and the support ring 14 and reduces the installation interference problem caused by machining errors.

[0065] Further, please refer to Figures 2-4 The first servo motor 233 is mounted on the support base 21. The output shaft of the first servo motor 233 is rotatably connected to the support base 21 via a deep groove ball bearing. The support base 21 is provided with a bearing support at the location of the deep groove ball bearing. It is connected to the first gear 231 via a planetary reducer. The first servo motor 233 provides power input. The planetary reducer can amplify torque and reduce motor inertia requirements, making it suitable for high-thrust rack and pinion systems. At the same time, the lifting and lowering of the movable support 22 should be accurately controlled by an encoder, and the correspondence between the lifting and lowering values ​​of the movable support 22 and the tilt angle should be calculated in advance. This allows for accurate control of height changes and achieves the effect of arbitrary height adjustment. Correspondingly, the movable support 22 can also be equipped with a displacement sensor to detect real-time displacement, compare it with the theoretical displacement, and transmit the difference to the first servo motor 233 to form a closed-loop control.

[0066] Specifically, please refer to Figure 1 , Figure 2 and Figure 4 The support base 21 has guide posts 211 on both sides of the top. The movable support 22 is sleeved on the guide posts 211. The movable support 22 and the guide posts 211 slide together. The guide posts 211 can guide and limit the movement direction of the movable support 22.

[0067] In this embodiment, please refer to Figure 6 A micro strain gauge 333 is provided on the outer side of the fan-shaped plate 33. The micro strain gauge 333 can detect the change of contact force in real time. When the micro strain gauge 333 detects a change in contact force, it indicates that the contact state between the fan-shaped plate 33 and the inner wall of the inner cylinder 12 has changed. That is, when the contact force measured by the micro strain gauge 333 reaches the preset threshold, it indicates that the fan-shaped plate 33 is in close contact with the inner wall of the inner cylinder 12. By connecting the micro strain gauge 333 to the controller, and the controller to the second drive component, the automatic diameter change of the top protection mechanism 3 can be realized.

[0068] For further explanation, please refer to Figure 1 , Figures 6-9 To ensure that the six sector plates 33 are in close contact with the inner wall of the inner cylinder 12 at the same time, the axes of the outer cylinder 11, inner cylinder 12, guide plate 31, first variable diameter plate 32 and the six sector plates 33 should all be collinear. To ensure that the sector plates 33 move radially stably, the first straight groove 311, the first arc groove 321 and the first pin 331 are all in one-to-one correspondence, the second straight groove 312 and the second pin 332 are in one-to-one correspondence, the second straight groove 312 is located radially outside the first straight groove 311, and the extension direction of the first straight groove 311 is collinear with the extension direction of the second straight groove 312.

[0069] Specifically, please refer to Figure 1 and Figure 6 The second drive component preferably includes a second servo motor 322, the output shaft of which is connected to the center key of the first variable diameter plate 32, and can stably drive the first variable diameter plate 32 to rotate.

[0070] In this embodiment, please refer to Figure 1 , Figures 10-14 The invention also includes three positioning adjustment mechanisms 4, which are evenly distributed circumferentially. Each positioning adjustment mechanism 4 includes an adjustment support seat 41 fixed to the support ring 14 and a guide connecting plate 42 fixed to the outer wall of the outer cylinder 11. The guide connecting plate 42 is rotatably connected to the adjustment support seat 41 via a positioning shaft 43. The positioning shaft 43 is provided with a positioning component that can position the adjustment support seat 41 and the guide connecting plate 42. When the connection angle between the adjustment support seat 41 and the guide connecting plate 42 is determined, the positioning shaft 43 is inserted and the positioning component is used to position and fix the adjustment support seat 41 and the guide connecting plate 42. This can limit the relative displacement of the outer cylinder 11 and the star-shaped bracket 13 in the vertical direction, bear the axial force, support the outer cylinder 11, prevent the outer cylinder 11 from generating rotational force during processing, resist shear force, and increase processing rigidity.

[0071] Further, please refer to Figures 10-14 The adjusting support base 41 is provided with a positioning groove 411 that matches the guide connecting plate 42, and the guide connecting plate 42 is embedded in the positioning groove 411. The adjusting support base 41 is provided with positioning pin holes 412 on both sides of the positioning groove 411, and the guide connecting plate 42 is provided with a limiting groove 421. The positioning shaft 43 passes through the two positioning pin holes 412 and the limiting groove 421, so that the adjusting support base 41 and the guide connecting plate 42 can swing relative to each other around the positioning shaft 43. The positioning assembly includes a locking nut 44 that is threaded to both ends of the positioning shaft 43. A positioning block 45 is provided between the locking nut 44 and the adjusting support base 41. The positioning block 45 passes through the positioning pin hole 412 and extends into the positioning groove 411. After tightening the locking nut 44, the positioning block 45 abuts against the adjusting support base 41 and the guide connecting plate 42 respectively, so that the adjusting support base 41 and the guide connecting plate 42 can be positioned and locked.

[0072] Furthermore, please refer to Figure 1 , Figures 10-14 The adjusting support 41 is preferably fixedly connected to the support ring 14 by screws; T-slots 112 are provided circumferentially on the outer wall of the outer cylinder 11, and the shape of the guide connecting plate 42 matches the T-slots 112 and is embedded in the T-slots 112. At the same time, the upper end of the guide connecting plate 42 is fixedly connected to the T-slots 112 by multiple sets of locking bolts 422 and set bolts 423. The locking bolts 422 and set bolts 423 enable the guide connecting plate 42 to stably resist shear force and bear axial force, wherein the shear force is a force parallel to the surface of the outer cylinder 11, and the axial force is a force parallel to the axial direction of the outer cylinder 11.

[0073] Specifically, the positioning block 45 comes in various specifications, and the appropriate positioning block 45 can be selected and matched according to the size differences of different gas turbine cylinder blocks. At the same time, the replaceable positioning block 45 can realize modular design and precision interface, which can realize the versatility of the mechanism and the leap in efficiency.

[0074] In this embodiment, please refer to Figure 1 and Figure 15 The invention also includes three side support mechanisms 5, which are distributed circumferentially. Each side support mechanism 5 includes a side support seat 51 fixed to the support ring 14 by bolts. A protective block 52 is provided on the side support seat 51. An adjustment component is provided between the protective block 52 and the side support seat 51 to control the movement of the protective block 52 in the direction of approaching or moving away from the outer wall of the outer cylinder 11. When the protective block 52 abuts against the outer wall of the outer cylinder 11, it can reduce the vibration of the outer cylinder 11 during the processing and reduce the processing deformation problem caused by insufficient support rigidity of the outer cylinder 11.

[0075] Specifically, please refer to Figure 15 The top of the side support 51 is provided with a support platform 54. The adjustment component includes an adjustment hole on the support platform 54. An adjustment rod 53 with clearance fit is provided in the adjustment hole. A protective block 52 is provided at one end of the adjustment rod 53. The protective block 52 is moved by the adjustment rod 53 so that the protective block 52 abuts against the outer wall of the outer cylinder 11. The position of the protective block 52 can be positioned by locking the adjustment rod 53 and the support platform 54 with screws.

[0076] In order to effectively protect the outer wall of the outer cylinder 11 from being damaged by the impact, the protective block 52 is made of a flexible material, preferably soft plastic.

[0077] For further explanation, please refer to Figure 1Three positioning adjustment mechanisms 4 and three side support mechanisms 5 are alternately distributed among the six height adjustment support mechanisms 2 and are evenly distributed. The positioning adjustment mechanism 4, the side support mechanism 5 and the height adjustment support mechanism 2 together improve the support rigidity of the outer cylinder 11, withstand the shear force and axial force generated during the processing, avoid deformation of the outer cylinder 11, fast clamping speed, effectively improve processing stability, improve processing efficiency, and ensure the turning and milling processing effect.

[0078] Please refer to Figures 1-15 The specific usage process of this invention is as follows:

[0079] According to the specific dimensions of the gas turbine cylinder block to be processed, adjust the position of the magnetic block 24 in the height adjustment mechanism, and adjust the height of the moving support 22 through the first servo motor 233 until the magnetic block 24 contacts the outer cylinder 11.

[0080] Install the adjusting support 41 and guide connecting plate 42 in the positioning adjustment mechanism 4 respectively, select a positioning block 45 of appropriate size and install it on the positioning shaft 43, and tighten the locking nut 44.

[0081] The top protective mechanism 3 is hoisted from above into the inner cylinder 12. The second positioning part 34 is moved radially outward until it cooperates with the first positioning part, so that the top protective mechanism 3 is fixed with the star-shaped bracket 13. Then, the fan-shaped plate 33 is radially expanded to seal the inner cylinder 12, so as to achieve radial positioning support of the top protective mechanism 3 in the inner cylinder 12, ensuring that the inner cylinder 12, the outer cylinder 11 and the support ring 14 are concentric.

[0082] Install side support mechanism 5;

[0083] Power the magnetic block 24 to attract and fix the outer cylinder 11 and the star-shaped bracket 13, and then the milling and turning process can begin.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A kind of gas turbine cylinder processing positioning device, the gas turbine cylinder includes outer cylinder (11), inner cylinder (12) and star support (13), the inner cylinder (12) is located in the outer cylinder (11), the inner cylinder (12) is connected with the outer cylinder (11) by the star support (13), the outer cylinder (11) outside is equipped with support ring (14), one end of the star support (13) passes through the outer cylinder (11) and is connected with the support ring (14), the other end of the star support (13) is connected in the inner wall of the inner cylinder (12) and is formed with first positioning part, it is characterized in that, include: The height adjustment support mechanism (2) includes a support seat (21) fixedly connected to the support ring (14). The support seat (21) is provided with a movable support (22) that can move in the vertical direction. A first driving component (23) that can drive the movable support (22) to move is provided between the movable support (22) and the support seat (21). A normal positioning part and a tangential positioning part are provided between the movable support (22) and the outer cylinder (11). The normal positioning part can position the relative position of the movable support (22) and the outer cylinder (11) in the radial direction of the outer cylinder (11). The tangential positioning part can position the relative position of the movable support (22) and the outer cylinder (11) in the direction tangential to the surface of the outer cylinder (11). A top protective mechanism (3) is located inside the inner cylinder (12). The top protective mechanism (3) includes a guide plate (31), a first variable diameter plate (32), multiple fan-shaped plates (33), and multiple second positioning parts (34). The guide plate (31) is provided with multiple first straight grooves (311) and multiple second straight grooves (312). The multiple first straight grooves (311) and multiple second straight grooves (312) are distributed circumferentially, and the first straight grooves (311) and the second straight grooves (312) are extended radially. The first variable diameter plate (32) is provided with multiple circumferentially distributed first arc-shaped grooves (321). The first variable diameter plate (32) is connected to a second driving component that drives its rotation. The multiple fan-shaped plates (33) are distributed circumferentially, and adjacent fan-shaped plates are positioned in a circumferential manner. The plates (33) are stacked, and the fan-shaped plates (33) are provided with a first pin (331) and a second pin (332). The first pin (331) cooperates with the first straight groove (311) and the first arc groove (321) respectively, and the second pin (332) cooperates with the second straight groove (312). The rotation of the first variable diameter plate (32) can drive multiple fan-shaped plates (33) to move radially synchronously. Multiple second positioning parts (34) are distributed circumferentially. The second positioning parts (34) are connected to a third driving component. The third driving component can drive multiple second positioning parts (34) to move radially synchronously. When multiple second positioning parts (34) cooperate with the first positioning part, the axis of the top protection mechanism (3) is collinear with the axis of the support ring (14).

2. The gas turbine cylinder block machining positioning device according to claim 1, characterized in that, The normal positioning part includes a plurality of magnetic blocks (24) disposed on the top of the movable support (22); the tangential positioning part includes a limiting pin (25) fixed on the magnetic block (24), the outer cylinder (11) is provided with a limiting hole (111), the limiting pin (25) extends into the limiting hole (111), and the axis of the limiting pin (25) is parallel to the direction of the magnetic force generated by the magnetic block (24).

3. The gas turbine cylinder block machining positioning device according to claim 2, characterized in that, The height adjustment support mechanism (2) is provided in multiple ways, and the multiple height adjustment support mechanisms (2) are evenly distributed in the circumferential direction; And / or, the top of the movable support (22) is provided with a mounting plate, the upper surface of the mounting plate is provided with a magnetic block sliding groove (26), and the magnetic block (24) is fixed in the magnetic block sliding groove (26) by screws; And / or, the upper end of the outer cylinder (11) has a flange, the magnetic block (24) abuts against the lower surface of the flange, and the flange hole on the flange forms the limiting hole (111). And / or, the movable support (22) is provided with two opposing racks (221), the first drive assembly (23) includes a first gear (231), a second gear (232) and a first servo motor (233), the first gear (231) meshes with one of the racks (221), the second gear (232) meshes with the other rack (221), the first gear (231) meshes with the second gear (232), and the first servo motor (233) is connected to one of the first gear (231) or the second gear (232) in a transmission connection; And / or, the support base (21) is provided with an elongated hole, and a screw passes through the elongated hole and is threaded to the support ring (14); And / or, the support base (21) is provided with guide posts (211) on both sides of the top, and the movable support (22) is sleeved on the guide posts (211).

4. The gas turbine cylinder block machining positioning device according to claim 1, characterized in that, The second positioning part (34) is configured as a moving block (36) with an arc-shaped surface, and the first positioning part is configured as a cylindrical surface that matches the arc-shaped surface.

5. The gas turbine cylinder block machining positioning device according to claim 4, characterized in that, The third drive assembly includes a second variable diameter plate (35) and multiple radially arranged guide rails (361). The second variable diameter plate (35) is provided with multiple circumferentially distributed second arc-shaped grooves (351). The second variable diameter plate (35) is connected to a third servo motor (352) that drives its rotation. The moving block (36) is provided on the guide rails (361) and can move along the guide rails (361). The moving block (36) is provided with a third pin (362), which cooperates with the second arc-shaped grooves (351). And / or, the outer cylinder (11), the inner cylinder (12), the guide plate (31), the first variable diameter plate (32) and the multiple sector plates (33) are all collinear; And / or, strain gauges (333) are provided on the outer side of the sector plate (33); And / or, the first straight groove (311), the first arc groove (321) and the first pin (331) are all in one-to-one correspondence, and the second straight groove (312) and the second pin (332) are in one-to-one correspondence; And / or, the second straight groove (312) is located radially outside the first straight groove (311); And / or, the second drive assembly includes a second servo motor (322), the output shaft of which is keyed to the first variable diameter plate (32).

6. The gas turbine cylinder block machining positioning device according to claim 1, characterized in that, It also includes multiple positioning adjustment mechanisms (4), which are distributed circumferentially; each positioning adjustment mechanism (4) includes an adjustment support seat (41) fixed on the support ring (14) and a guide connecting plate (42) fixed on the outer wall of the outer cylinder (11). The guide connecting plate (42) is rotatably connected to the adjustment support seat (41) via a positioning shaft (43). The positioning shaft (43) is provided with a positioning component capable of positioning the adjustment support seat (41) and the guide connecting plate (42).

7. The gas turbine cylinder block machining positioning device according to claim 6, characterized in that, The adjusting support base (41) is provided with a positioning groove (411) that matches the guide connecting plate (42), and the guide connecting plate (42) is embedded in the positioning groove (411); the adjusting support base (41) is provided with positioning pin holes (412) on both sides of the positioning groove (411), and the guide connecting plate (42) is provided with a limiting groove (421); the positioning shaft (43) passes through the two positioning pin holes (412) and the limiting groove (421); the positioning assembly includes a locking nut (44) that is threaded to both ends of the positioning shaft (43), and a positioning block (45) is provided between the locking nut (44) and the adjusting support base (41). The positioning block (45) passes through the positioning pin hole (412) and extends into the positioning groove (411); after tightening the locking nut (44), the positioning block (45) abuts against the adjusting support base (41) and the guide connecting plate (42) respectively.

8. The gas turbine cylinder block machining positioning device according to claim 7, characterized in that, The adjusting support base (41) is fixedly connected to the support ring (14) by screws; And / or, the outer wall of the outer cylinder (11) is provided with T-shaped grooves (112) spaced around the perimeter, and the guide connecting plate (42) is embedded in the T-shaped grooves (112).

9. A gas turbine cylinder block machining positioning device according to claim 1, characterized in that, It also includes multiple side support mechanisms (5), which are distributed circumferentially; each side support mechanism (5) includes a side support seat (51) fixed on the support ring (14), and a protective block (52) is provided on the side support seat (51). The protective block (52) abuts against the outer wall of the outer cylinder (11), and an adjustment component is provided between the protective block (52) and the side support seat (51) to control the movement of the protective block (52) in the direction of approaching or moving away from the outer wall of the outer cylinder (11).

10. A gas turbine cylinder block machining positioning device according to claim 9, characterized in that, The side support base (51) has a support platform (54) on its top. The adjustment assembly includes an adjustment hole on the support platform (54), an adjustment rod (53) that is clearance-fitted to the adjustment hole, and a protective block (52) at one end of the adjustment rod (53). And / or, the protective block (52) is made of a flexible material.

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