A digital fast flexible precise positioning mechanism and method for aero-engine duct

Abstract

The present invention discloses a digital fast flexible and precise positioning mechanism and method for an aircraft engine duct, including a tube end positioning mechanism and a flexible clamping mechanism for the duct. The tube end positioning mechanism includes a universal rotating mechanism, a positioning card block and a positioning block. The flexible clamping mechanism for the duct includes a flexible clamping block, a flexible suspension needle and a workbench. The positioning card block is fixedly connected to one side of the top of the universal rotating mechanism, the left side of the positioning block is connected to the positioning card block, and the inner hole on the right side is connected to the duct. A flexible clamping block is arranged on the workbench, and a flexible suspension needle is installed on the inner side of the flexible clamping block, and the flexible suspension needle stably clamps the duct by locking. The present invention realizes a fast, flexible and precise positioning method for aircraft engine ducts of any tube shape and any specification, improves the coverage rate of duct processing automation, improves positioning accuracy and positioning efficiency, and meets the requirements for automated processing of the tube ends of various ducts with special-shaped and complex structures.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and in particular to a digital fast flexible precise positioning mechanism and method for an aero-engine duct. Background Art

[0002] At present, the processing steps involved in the bending of aircraft engine ducts include cutting the ends, flattening the ends, deburring, and grinding the tube ends. For the above processes, the industry has always adopted the methods of manually holding the ducts for clamping, visually determining the processing position for positioning, and manually adjusting the processing position of the tube ends.

[0003] Workers clamp and visually compare the cutting position of the circular saw blade according to the marking position. The cutting process is carried out according to the process requirements, and the marking marks are reserved. The marking marks are removed by manually holding the catheter and using the flat end machine to ensure the size requirements and the quality of the pipe end. After the flat end, tiny burrs remain inside and outside the pipe end, which affects the subsequent automatic welding process. At present, deburring tools are used to remove the internal and external burrs one by one. Its processing accuracy is affected by the clamping method, manual participation, and processing method, and precise processing cannot be achieved. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a digital rapid, flexible and precise positioning mechanism and method for aero-engine ducts, which can improve the coverage rate of duct processing automation, improve positioning accuracy and efficiency, and meet the needs of automated processing of pipe ends of various special-shaped and complex structure ducts.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A digital fast flexible and precise positioning mechanism for an aircraft engine duct includes a tube end positioning mechanism and a duct flexible clamping mechanism. The tube end positioning mechanism includes a universal rotating mechanism, a positioning card block, and a positioning block. The duct flexible clamping mechanism includes a flexible clamping block, a flexible suspension needle, and a workbench. The positioning card block is fixedly connected to one side of the top of the universal rotating mechanism, the left side of the positioning block is connected to the positioning card block, and the inner hole on the right side is connected to the duct. A flexible clamping block is arranged on the workbench, and a flexible suspension needle is installed inside the flexible clamping block. The flexible suspension needle stably clamps the duct by locking.

[0007] The positioning block is selected in different sizes according to the outer diameter of the catheter to be processed, and the positioning block is sleeved on the positioning clamping block.

[0008] The workbench has a position adjustment function, which enables the flexible clamping block to move and realize the clamping function.

[0009] The flexible suspended magnetic needle can wrap catheters of different tubular shapes.

[0010] In addition, a method for digitally fast flexible and precise positioning of an aero-engine duct is to be implemented by the above-mentioned digitally fast flexible and precise positioning mechanism for an aero-engine duct, and the method comprises the following steps:

[0011] S1. Place the universal rotating mechanism in a vertical position;

[0012] S2. Select different positioning blocks according to the outer diameter of the catheter to be processed, and put them on the positioning block;

[0013] S3. Insert the catheter to be processed into the right hole of the positioning block, use the outer diameter and end face for positioning, and place the catheter in a horizontal position to facilitate subsequent processing.

[0014] S4. The clamping block is moved inward by the workbench to clamp the catheter;

[0015] S5. The suspended needles are initially in the same plane and are subjected to force during the clamping process to cover catheters of different tubular shapes;

[0016] S6. When the two clamps move to a distance of 4-6 mm, they stop moving;

[0017] S7. The suspension needle is also locked at the same time to clamp and fix the catheter;

[0018] S8. Rotate the universal rotating mechanism 90 degrees to a horizontal position;

[0019] S9. The positioning block is separated from the conduit, exposing the pipe end, and any processing of the pipe end can be performed.

[0020] The beneficial effects of the present invention are:

[0021] The present invention replaces the positioning method that has been adopted in the industry, which is to manually hold the catheter for positioning and clamping, visually determine the processing position, and manually adjust the processing position of the tube end. It realizes a fast, flexible, and accurate positioning method for aircraft engine catheters of any shape and any specification, improves the coverage rate of catheter processing automation, improves positioning accuracy and positioning efficiency, and meets the needs of automated processing of tube ends of various special-shaped and complex structure catheters. The processing accuracy of the tube end can be improved from ±2mm to 0.2mm, and the processing efficiency can be improved by more than 30%. At the same time, it reduces labor costs, improves processing consistency, and can be extended to various automated processing needs of tube ends, with huge economic and quality benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the pipe end positioning mechanism of the present invention before installation;

[0023] Figure 2 It is a schematic diagram of the pipe end positioning mechanism after installation of the present invention;

[0024] Figure 3 is a schematic diagram of the flexible clamping mechanism for a catheter of the present invention;

[0025] Figure 4 A schematic diagram of the overall mechanism connection of the present invention;

[0026] Figure 5 It is a schematic diagram of the positioning block and the catheter of the overall mechanism of the present invention being separated.

[0027] Among them, 1 is a universal rotating mechanism, 2 is a positioning block, 3 is a positioning block, 4 is a catheter, 5 is a flexible clamping block, 6 is a flexible suspension needle, and 7 is a workbench. DETAILED DESCRIPTION

[0028] In order to solve the problems existing in the prior art, such as Figure 1-Figure 5 As shown, the present invention provides a digital fast flexible and precise positioning mechanism for an aircraft engine duct, comprising a universal rotating mechanism 1, a positioning block 2, a positioning block 3, a duct 4, a flexible clamping block 5, a flexible suspension needle 6, and a workbench 7. The positioning block 2 is fixedly connected to one side of the top of the universal rotating mechanism 1, the left side of the positioning block 3 is connected to the positioning block 2, and the inner hole on the right side is connected to the duct 4. A flexible clamping block 5 is arranged on the workbench 7, and a flexible suspension needle 6 is installed inside the flexible clamping block 5, and the flexible suspension needle 6 stably clamps the duct 4 by locking.

[0029] The positioning block 3 is selected according to the outer diameter of the catheter 4 to be processed, and the positioning block 3 is placed on the positioning block 2. The workbench 7 has a position adjustment function to move the flexible clamping block 5 to achieve the clamping function. The flexible suspension magnetic needle 6 can wrap the catheter 4.

[0030] In addition, a method for digitally fast flexible and precise positioning of an aero-engine duct is to be implemented by the above-mentioned digitally fast flexible and precise positioning mechanism for an aero-engine duct, and the method comprises the following steps:

[0031] S1. Place the universal rotating mechanism 1 in a vertical position;

[0032] S2. Select the positioning block 3 according to the outer diameter of the catheter 4 to be processed, and put it on the positioning card block 2;

[0033] S3. Insert the catheter 4 to be processed into the right hole of the positioning block 3, use the outer diameter and end face for positioning, and place the catheter 4 in a horizontal position to facilitate subsequent processing.

[0034] S4. The flexible clamp 5 moves inward through the workbench 7 to clamp the catheter 4;

[0035] S5. The flexible suspension needle 6 is initially in the same plane, and is subjected to force during the clamping process to cover the catheter 4 of different tubular shapes;

[0036] S6. When the wrapping area of ​​the flexible suspended magnetic needle 6 is larger than 60% of the wrapping area of ​​the catheter 4, the clamping action of the flexible clamping block 5 can be stopped.

[0037] S7. At the same time, the flexible suspension needle 6 is locked to clamp and fix the catheter 4;

[0038] S8. Rotate the universal rotating mechanism 1 90 degrees to a horizontal position;

[0039] S9. The positioning block 3 is separated from the conduit 4, and the pipe end is exposed, and any processing of the pipe end can be performed.

Claims

1. A digital rapid flexible and precise positioning method for an aircraft engine duct, characterized in that: The method is realized by a digital fast flexible and precise positioning mechanism for the aero-engine duct, which includes a tube end positioning mechanism and a duct flexible clamping mechanism; the tube end positioning mechanism includes a universal rotation mechanism, a positioning card block and a positioning block; the duct flexible clamping mechanism includes a flexible clamping block, a flexible suspension needle and a workbench; the positioning card block is fixedly connected to one side of the top of the universal rotation mechanism, the left side of the positioning block is connected to the positioning card block, and the inner hole on the right side is connected to the duct; a flexible clamping block is arranged on the workbench, a flexible suspension needle is installed on the inner side of the flexible clamping block, and the flexible suspension needle stably clamps the duct by locking; the positioning block selects different sizes according to the outer diameter of the duct to be processed, and the positioning block is put on the positioning card block; the method includes the following steps: S1. Place the universal rotating mechanism in a vertical position; S2. Select different positioning blocks according to the outer diameter of the catheter to be processed, and put them on the positioning block; S3. Insert the catheter to be processed into the right hole of the positioning block, use the outer diameter and end surface for positioning, and place the catheter in a horizontal position; S4. The clamping block is moved inward by the workbench to clamp the catheter; S5. The flexible suspension needle is subjected to force during the clamping process to cover catheters of different tube shapes; S6. When the two clamps move to a distance of 4-6 mm, they stop moving; S7. The flexible suspension needle is also locked at the same time to clamp and fix the catheter; S8. Rotate the universal rotating mechanism 90 degrees to a horizontal position; S9. Separate the positioning block from the conduit to expose the pipe end, and perform any processing on the pipe end.

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