A detection device for detecting the clamping groove position of an aero-engine blade tenon

Abstract

The utility model discloses a detection device of mortise slot position of aeroengine blade tenon, and the utility model relates to the technical field of slot detection to two mortises of blade, and the piston rod of pullback air cylinder is left -hand through the vertical plate, and the horizontal setting of rod spare is fixed on the extension end, and a plurality of interval support boards are fixed on the length direction of rod spare, and each support board all extends downward, and the horizontal setting of floating rod is slidably installed in the extension end, and the right -hand end of floating rod is fixed with one longitudinal setting profiled strip, the right -hand end surface of vertical plate is fixed with linear cylinder, and the piston rod of linear cylinder is left -hand through vertical plate, and the extension end is fixed with rack, and rack is engaged with each gear. The utility model has the advantages of: greatly alleviating the working strength of worker, and greatly improving the slot detection efficiency to blade.

Description

Technical Field

[0001] This utility model relates to the technical field of slot position detection for two slots on a blade, and in particular to a detection device for detecting the slot position of the tenon of an aero-engine blade. Background Technology

[0002] The aircraft engine of a civil aircraft is equipped with a turbine, and multiple blades are installed on the turbine along its circumference. The core function of the blades is to convert the energy of the high-temperature and high-pressure gas into the rotational mechanical energy of the turbine, thereby providing rotational power for the aircraft engine.

[0003] There are many types of aircraft engines, and the corresponding types of blades also vary. The structure of blade 1 for a certain type is as follows: Figures 1-2 As shown, it includes a tenon 2 and a blade 3 connected to the tenon 2. The left and right end faces of the tenon 2 are provided with slots 4. The two slots 4 are symmetrical about the tenon 2. The slots 4 are used to cooperate with the turbine components to install the tenon 2 on the turbine, and then install the entire blade on the turbine.

[0004] After a batch of blades 1 is produced in the workshop, the process requires checking the position of the two slots 4 of blade 1. That is, it requires checking whether the vertical distance H between the lower edge of the slot 4 and the bottom surface of the tenon 2 is within the design range. The specific testing method is as follows: S1. The worker takes one out of the material basket. Figures 1-2 The blade 1 to be tested is shown, and it is placed flat on the test table. S2. The worker uses a vernier caliper to measure the vertical distance H between the lower edge of the left groove 4 of the blade 1 and the bottom surface of the tenon 2. If the measured vertical distance H is not within the design range, the worker determines that the groove position of the left groove 4 of the blade 1 being inspected does not meet the requirements, and determines that the blade 1 being inspected is a defective product. If the measured vertical spacing H is within the design range, the worker will determine that the slot position of the left side slot 4 of blade 1 meets the requirements and that blade 1 is a semi-qualified product. S3. The worker uses calipers to measure the vertical distance H between the lower edge of the right groove 4 of the semi-conforming product and the bottom surface of the tenon 2. If the measured vertical distance H is not within the design range, the worker determines that the right groove 4 of the semi-conforming product does not meet the requirements and the semi-conforming product is a defective product. If the measured vertical distance H is within the design range, the worker determines that the groove of the right groove 4 of the semi-conforming product meets the requirements and the semi-conforming product is a qualified product, thus completing the inspection of the groove of a blade 1. S4. Workers can repeat steps S1 to S3 multiple times to complete the inspection of all slots in a batch of blades 1.

[0005] However, while the method used in the workshop can perform slot position detection on a batch of blades 1 within the workshop, the following technical defects still emerge in actual operation: I. In step S2, the worker needs to use a vernier caliper to measure the vertical distance H between the lower edge of the left groove 4 of the blade 1 and the bottom surface of the tenon 2. In step S3, the worker still needs to use a vernier caliper to measure the vertical distance H between the lower edge of the right groove 4 of the blade 1 and the bottom surface of the tenon 2 in order to complete the inspection of the blade 1 groove. The entire inspection process is completed by the worker manually operating the vernier caliper, which not only increases the worker's workload but also reduces the inspection efficiency of the blade 1 groove.

[0006] II. In the workshop, there are as many as 30 blades 1 to be inspected in a day. Workers inspect them one by one, which takes a long time to complete the inspection of all 30 blades 1. This undoubtedly reduces the inspection efficiency of the blade 1 slot.

[0007] Therefore, there is an urgent need for a detection device that can greatly reduce the workload of workers and greatly improve the efficiency of blade slot detection. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a detection device for the slot of the tenon of aero-engine blade that greatly reduces the labor intensity of workers and greatly improves the detection efficiency of blade slot.

[0009] The purpose of this utility model is achieved through the following technical solution: a detection device for detecting the slot position of the tenon of an aero-engine blade, comprising a machine base and a vertical plate fixed on the machine base surface. A pull-back cylinder is fixed on the right end face of the upper end of the vertical plate. The piston rod of the pull-back cylinder passes through the vertical plate to the left, and a horizontally arranged rod is fixed on the extended end. Multiple spaced support plates are fixed on the rod along its length direction. Each support plate extends downward, and a horizontally arranged floating rod is slidably installed in the extended end. A longitudinally arranged contoured strip is fixed on the right end of the floating rod. The outer contour of the contoured strip matches the slot of the blade. A floating plate is fixed on the left end of the floating rod. A spring is sleeved on the floating rod. The left end of the spring is fixed on the right end face of the floating plate, and the other end is fixed on the left end face of the support plate. On the machine base and on the left side of the vertical plate, a plurality of positioning components for positioning the blades are arranged sequentially. Each positioning component corresponds to a different contoured block. The positioning component includes a rotating shaft rotatably mounted on the machine base and a concave part fixed on the top surface of the rotating shaft. A gear is mounted on the rotating shaft. Positioning plates are fixed on the top surfaces of the two side walls of the concave part. A rearwardly extending strip positioning groove is opened on the front end face of the two positioning plates. The area enclosed by the two strip positioning grooves matches the outer contour of the tenon of the blade. A linear cylinder is fixedly mounted on the right end face of the vertical plate. The piston rod of the linear cylinder passes through the vertical plate to the left, and a rack is fixedly mounted on the extended end. The rack meshes with each gear.

[0010] The horizontal spacing between any two adjacent support plates is equal.

[0011] The support plate has a square hole, and the floating rod slides in conjunction with the square hole.

[0012] The two positioning plates of the positioning component are symmetrical about the left and right sides.

[0013] The machine tool is fixedly provided with multiple bearing seats that correspond to the rotating shafts of each positioning component, and the rotating shafts are rotatably installed in the bearing seats.

[0014] Three support plates are fixed on the rod.

[0015] The detection device also includes a controller, which is electrically connected to the pull-back cylinder and the linear cylinder via signal lines.

[0016] This invention has the following advantages: it greatly reduces the workload of workers and greatly improves the efficiency of blade slot detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a certain type of blade; Figure 2 for Figure 1 The left view; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 for Figure 3 The main view; Figure 5 for Figure 4 A schematic diagram of the partial cross-section; Figure 6 This is a schematic diagram showing the connection of the pull-back cylinder, rod, floating rod, spring, and contoured block; Figure 7 This is a structural diagram of the positioning component; Figure 8 for Figure 7 The main view; Figure 9 This is a schematic diagram showing the connection between a linear cylinder and a rack. Figure 10 This is a schematic diagram showing the three blades corresponding to the three positioning components; Figure 11 This is a schematic diagram showing the movement of the contour strip towards the left side of the blade's groove. Figure 12 This is a schematic diagram of a semi-qualified product after it has been rotated exactly 180°. Figure 13 A schematic diagram showing the movement of the contour strip towards the right slot of the semi-conforming product; In the picture: 1-blade, 2-tenon, 3-blade body, 4-slot; 5-Machine base, 6-Upright plate, 7-Retracting cylinder, 8-Rod, 9-Support plate, 10-Floating rod, 11-Following strip, 12-Floating plate, 13-Spring; 14-Positioning component, 15-Rotating shaft, 16-Concave part, 17-Gear, 18-Positioning plate, 19-Strip positioning groove; 20 - Linear cylinder, 21 - Rack, 22 - Bearing housing, 23 - Semi-qualified product. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 3-9 As shown, a detection device for detecting the slot position of the tenon of an aero-engine blade includes a machine base 5 and a vertical plate 6 fixed on the surface of the machine base 5. A pull-back cylinder 7 is fixed on the right end face of the upper end of the vertical plate 6. The piston rod of the pull-back cylinder 7 passes through the vertical plate 6 to the left, and a horizontally arranged rod 8 is fixed on the extended end. Multiple spaced support plates 9 are fixed on the rod 8 along its length direction. Each support plate 9 extends downward, and a horizontally arranged floating rod 10 is slidably installed in the extended end. A longitudinally arranged contoured strip 11 is fixed on the right end of the floating rod 10. The outer contour of the contoured strip 11 matches the slot 4 of the blade 1. A floating plate 12 is fixed on the left end of the floating rod 10. A spring 13 is sleeved on the floating rod 10. The left end of the spring 13 is fixed on the right end face of the floating plate 12, and the other end is fixed on the left end face of the support plate 9. Multiple bearing seats 22 are fixed on the table surface of the machine base 5, each corresponding to the rotating shaft 15 of each positioning component 14. The rotating shaft 15 is rotatably installed in the bearing seat 22.

[0019] The horizontal distance between any two adjacent support plates 9 is equal, and three support plates 9 are fixedly mounted on the rod 8. A square hole is provided in the support plate 9, and the floating rod 10 slides in the square hole.

[0020] On the machine base 5 and on the left side of the vertical plate 6, a plurality of positioning components 14 for positioning the blade 1 are arranged sequentially. The plurality of positioning components 14 correspond to each contoured strip 11. Each positioning component 14 includes a rotating shaft 15 rotatably mounted on the machine base 5 and a concave part 16 fixed on the top surface of the rotating shaft 15. A gear 17 is mounted on the rotating shaft 15. Positioning plates 18 are fixed on the top surfaces of the two side walls of the concave part 16. A rearwardly extending strip positioning groove 19 is opened on the front end face of the two positioning plates 18. The area enclosed by the two strip positioning grooves 19 matches the outer contour of the tenon 2 of the blade 1. The two positioning plates 18 of the positioning component 14 are symmetrical about the left and right.

[0021] A linear cylinder 20 is fixedly mounted on the right end face of the vertical plate 6. The piston rod of the linear cylinder 20 passes through the vertical plate 6 to the left, and a rack 21 is fixedly mounted on the extended end. The rack 21 meshes with each gear 17.

[0022] The testing device also includes a controller, which is electrically connected to the pull-back cylinder 7 and the linear cylinder 20 via signal lines. The operator can control the extension or retraction of the piston rods of the pull-back cylinder 7 and the linear cylinder 20 through the controller, thereby facilitating the operator's operation.

[0023] The working process of this utility model is as follows: S1. The worker takes three [items] out of the material basket. Figures 1-2 The blade to be tested is shown as 1; S2. Position the three blades 1 onto the three positioning components 14 respectively. The specific operation steps are as follows: S21. The worker pushes the tenon 2 of a blade 1 from front to back into the area enclosed by the two strip positioning grooves 19 of the first positioning component 14. When the tenon 2 is blocked by the rear wall of the strip positioning groove 19, the positioning of the first blade 1 is achieved. At this time, the left side slot 4 of the tenon 2 of the blade 1 is opposite to the contour strip 11 of the first positioning component 14. S22. The worker repeats step S21 twice to position the remaining two blades 1 onto the two positioning components 14 respectively, thus ultimately positioning the three blades 1 onto the three positioning components 14 respectively. Figure 10 As shown; S3. Simultaneously perform slot position detection on the left side slot 4 of the three blades 1. The specific operation steps are as follows: The worker controls the piston rod of the pullback cylinder 7 to retract to the right. The piston rod drives the rod 8 to move to the right, and the rod 8 drives the three vertical plates 6 to move to the right simultaneously. The vertical plates 6 drive the floating rod 10, spring 13, floating plate 12, and contouring block 11 on them to move to the right in sync. Among them, the contouring block 11 moves towards the left side of the blade 1 in the direction of the slot 4. Figure 11As shown; When the piston rod of the pull-back cylinder 7 is fully retracted, if the worker observes that the contour strip 11 is not inserted into the left slot 4 of the blade 1, the worker will determine that the slot of the left slot 4 of the blade 1 does not meet the requirements and will determine that it is a defective product. Then the worker will remove the defective product from the positioning assembly 14 from back to front. If the worker observes that the contour strip 11 is fully inserted into the left slot 4 of the blade 1, then the worker determines that the slot position of the left slot 4 of the blade 1 meets the requirements and determines that it is a semi-qualified product 23. S4. Perform slot position detection on the right side slot 4 of the semi-conforming product 23. The specific operation steps are as follows: S41, the piston rod of the control cylinder 7 extends to the left, the piston rod drives the rod 8 to move to the left, and then drives the contour block 11 to reset; S42. The worker controls the piston rod of the linear cylinder 20 to retract to the right. The piston rod drives the rack 21 to move to the right, the rack 21 drives each gear 17 to rotate, the gears 17 drive the rotating shaft 15 to rotate synchronously around its own axis, the rotating shaft 15 drives the concave part 16 and the positioning plate 18 to rotate synchronously, and thus drives the semi-conforming product 23 to rotate synchronously. When the piston rod of the linear cylinder 20 is fully retracted, the semi-conforming product 23 has rotated exactly 180°. Figure 12 As shown, at this time, the right slot 4 of the semi-qualified product 23 is facing the contour strip 11; S43. The worker controls the piston rod of the pull-back cylinder 7 to retract to the right. The piston rod drives the rod 8 to move to the right, and the rod 8 drives the three vertical plates 6 to move to the right simultaneously. The vertical plates 6 drive the floating rod 10, spring 13, floating plate 12, and contouring block 11 on them to move to the right synchronously. Among them, the contouring block 11 moves towards the right slot 4 of the semi-conforming product 23. Figure 13 As shown; When the piston rod of the pull-back cylinder 7 is fully retracted, if the worker observes that the contour strip 11 is not inserted into the right slot 4 of the blade 1, the corresponding semi-conforming product 23 is determined to be in the wrong position in the right slot 4 and is determined to be a non-conforming product. The worker removes the non-conforming product from the positioning assembly 14 from back to front. If the worker observes that the contour strip 11 is fully inserted into the right slot 4 of the blade 1, the worker determines that the slot of the right slot 4 of the corresponding semi-qualified product 23 meets the requirements and is determined to be a qualified product. Then the worker removes the qualified product from the positioning component 14 from back to front, thus finally realizing the one-time detection of the slots of the three blades 1. S5. Workers can repeat steps S1 to S4 multiple times to complete the inspection of all slots in a batch of blades 1.

[0024] As can be seen from steps S2 to S4, the worker only needs to first position the three blades 1 on the three positioning components 14 respectively, and then control the piston rod of the pull-back cylinder 7 to retract to the right to complete the groove position detection of the left side slot 4 of the three blades 1. Then, control the piston rod of the linear cylinder 20 to retract to the right to rotate the semi-conforming product 23 180° on the horizontal plane so that the right side slot 4 of the semi-conforming product 23 faces the contour block 11. Then, control the piston rod of the pull-back cylinder 7 to retract to the right to complete the groove position detection of the right side slot 4 of the semi-conforming product 23. Thus, the groove position detection of the three blades 1 is finally achieved in one go.

[0025] Therefore, it can be seen that this detection device can quickly complete the detection of the blade 1 slot by means of the cooperation of the positioning component 14, the pull-back cylinder 7 and the linear cylinder 20. It eliminates the need for workers to manually measure the vertical distance H between the bottom edge of the two slots 4 and the bottom surface of the tenon 2 with calipers to complete the detection of the blade 1 slot, which greatly reduces the workload of workers.

[0026] Furthermore, the combination of the positioning component 14, the pull-back cylinder 7, and the linear cylinder 20 in this detection device can perform slot detection on three blades 1 at once, enabling all blades 1 in a batch in the workshop to be slot detected in a short time, eliminating the need for workers to perform slot detection on blades 1 one by one, thereby greatly improving the detection efficiency of blade 1 slots.

Claims

1. A detection device for detecting the slot position of a tenon on an aero-engine blade, characterized in that: It includes a machine base (5), a vertical plate (6) fixed on the table surface of the machine base (5), a pull-back cylinder (7) fixed on the right end face of the upper end of the vertical plate (6), the piston rod of the pull-back cylinder (7) passes through the vertical plate (6) to the left, and a horizontally arranged rod (8) is fixed on the extended end. Multiple spaced support plates (9) are fixed on the rod (8) along its length direction. Each support plate (9) extends downward, and a horizontally arranged floating rod (10) is slidably installed in the extended end. A longitudinally arranged contoured strip (11) is fixed on the right end of the floating rod (10). The outer contour of the contoured strip (11) matches the slot (4) of the blade (1). A floating plate (12) is fixed on the left end of the floating rod (10). A spring (13) is sleeved on the floating rod (10). The left end of the spring (13) is fixed on the right end face of the floating plate (12), and the other end is fixed on the left end face of the support plate (9). On the machine base (5) and on the left side of the vertical plate (6), there are a number of positioning components (14) for positioning the blade (1). The multiple positioning components (14) correspond to each of the contour strips (11). The positioning component (14) includes a rotating shaft (15) rotatably mounted on the machine base (5) and a concave part (16) fixed on the top surface of the rotating shaft (15). A gear (17) is mounted on the rotating shaft (15). Positioning plates (18) are fixed on the top surfaces of the two side walls of the concave part (16). A rearwardly extending strip positioning groove (19) is opened on the front end surface of the two positioning plates (18). The area enclosed by the two strip positioning grooves (19) matches the outer contour of the tenon (2) of the blade (1). A linear cylinder (20) is fixedly mounted on the right end face of the vertical plate (6). The piston rod of the linear cylinder (20) passes through the vertical plate (6) to the left, and a rack (21) is fixedly mounted on the extended end. The rack (21) meshes with each gear (17).

2. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: The horizontal spacing between any two adjacent support plates (9) is equal.

3. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: The support plate (9) has a square hole, and the floating rod (10) slides in the square hole.

4. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: The two positioning plates (18) of the positioning component (14) are symmetrical about the left and right sides.

5. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: The machine tool (5) has a plurality of bearing seats (22) fixed on its table surface, each corresponding to a rotating shaft (15) of a positioning component (14), and the rotating shaft (15) is rotatably installed in the bearing seat (22).

6. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: Three support plates (9) are fixed on the rod (8).

7. The detection device for detecting the slot position of the tenon of an aero-engine blade according to claim 1, characterized in that: The detection device also includes a controller, which is electrically connected to the pull-back cylinder (7) and the linear cylinder (20) via signal lines.

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