Clamping tool for milling of aircraft landing gear assembling and replacing device

Abstract

The utility model discloses a clamping tool for milling an aircraft landing gear mounting and replacing device, which comprises a tool main body, the tool main body is provided with at least one mounting inclined surface, the mounting inclined surface is provided with a positioning groove matched with the mounting and replacing device in appearance, the positioning groove is provided with a clearance hole, a clearance angle and a clamping plate fixing hole, and the clearance angle is matched with the clamping plate fixing hole. A clamping block is arranged at the bottom of the tool body, and a through groove is formed in the tool body in the length direction. The fixing assembly is used for connecting the tool body with a guide rail groove of a machine tool, and the clamping assembly is used for connecting the tool body with a mounting and replacing device. According to the utility model, the mounting and replacing device can be quickly fixed on the working table of the machine tool, so that the calibration times of the mounting and replacing device on the working table of the machine tool are reduced, the clamping times are reduced, and the milling modification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a clamping tool for milling of an aircraft landing gear replacement device. Background Art

[0002] During the landing gear overhaul process, the landing gear replacement device serves as an adapter for various pipelines of the landing gear. It is used to transfer the hydraulic pipeline connecting the fuselage to the landing gear brake, increase the gap between the main landing gear hinge door control lever and the replacement device, and improve its durability and safety and stability.

[0003] like Figure 1 The figure shows the landing gear replacement device of the Airbus A320 series aircraft. According to the service announcement issued by Airbus, the landing gear replacement device often needs to be modified. According to the CMM manual (component maintenance manual), the interference part of the A320 landing gear conversion device needs to be removed according to the processing technology. Figure 2 As shown, the conversion device 1 has a special appearance and structure. When it is modified, the upper inclined surface 1b and the lower inclined surface 1c are processed by milling. An inclined clamping method is required. The placement of the conversion device on the machine tool guide groove is demanding. During the clamping process, it is necessary to calibrate the table many times, clamp repeatedly, and adjust the yaw machine tool spindle many times to achieve milling of the conversion device. The process preparation time is long. It takes about 2 hours to modify a conversion device. There are also large unsafe factors in the process, which may cause certain wear and tear to the machine tool equipment. Utility Model Content

[0004] The utility model aims to provide a clamping tool for milling an aircraft landing gear replacement device, which can realize accurate positioning of a replacement device with a special processing position on a milling machine, reduce the clamping operation procedures, and improve the milling efficiency.

[0005] The purpose of the utility model can be achieved through the following technical solutions.

[0006] A clamping tool for milling of an aircraft landing gear replacement device, comprising:

[0007] A tooling body, wherein the tooling body has at least one installation inclined surface, a positioning groove matching the outer shape of the changing device is provided on the installation inclined surface, a clearance hole corresponding to the convex part of the changing device is provided on the bottom surface of the positioning groove to avoid interference with the convex part of the changing device, an arc-shaped clearance angle corresponding to the corner of the changing device is provided at the side bend of the positioning groove to avoid right-angle interference when the changing device is installed into the positioning groove, a clamp fixing hole is also provided on the bottom surface of the positioning groove, a clamping block matching the guide groove of the machine tool is provided at the bottom of the tooling body, the clamping block is processed according to the width of the guide groove and can be tightly fitted and installed on the machine tool, and a through groove is provided along the length direction of the tooling body;

[0008] A fixing assembly for connecting the tool body to the guide rail groove of the machine tool, comprising a main body pressing plate, a first screw and a first nut, wherein the main body pressing plate can be inserted into the through groove of the tool body and the two ends of the main body pressing plate are exposed outside the tool body, and both ends of the main body pressing plate are provided with through holes for inserting the first screw, and the first nut is arranged below the guide rail groove of the machine tool and connected to the first screw, and tightening the first screw can fix the tool body on the guide rail of the machine tool;

[0009] The clamping assembly used to connect the tool body with the changing device includes a clamping plate and a second screw rod used to press the changing device from the outside, the clamping plate is provided with a long hole for the second screw rod to pass through, and the second screw rod passes through the long hole of the clamping plate and is connected to the clamping plate fixing hole on the tool body. The changing device is first installed into the positioning groove, and then the clamping plate is used to press the changing device, and the second screw rod is connected to the clamping plate fixing hole. The clamping plate is used to clamp the changing device to prevent loosening and detachment. During milling, the clamping plate and the positioning groove can ensure that the position of the changing device is stable.

[0010] The utility model also has the following preferred designs:

[0011] The tooling body of the utility model has two mutually symmetrical installation inclined surfaces, and the positioning groove, the air avoidance hole, the air avoidance angle and the clamping plate fixing hole are arranged on the two installation inclined surfaces. The replacement device of the left landing gear and the right landing gear can be clamped at one time with one tooling body, which is convenient for rapid milling and further reduces the operation process.

[0012] The positioning groove of the utility model is arranged obliquely relative to the guide rail groove of the machine tool, and the positioning groove is arranged according to the size of the replacement device and the inclination angle required for processing.

[0013] The upper part of the positioning groove of the utility model is an open groove, so that the part to be milled of the changing device clamped on the tooling body is above the tooling body, which is convenient for milling processing of the changing device and also for its installation and disassembly.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model can quickly fix the changing device on the workbench of the machine tool, reduce the calibration times of the changing device on the workbench of the machine tool, and reduce the clamping times at the same time. The clamping and milling time of modifying a changing device can be shortened to 20 minutes.

[0016] 2. The utility model adopts an inclined positioning groove to meet the angle required for milling processing, which can avoid multiple swing adjustments of the spindle head of the milling machine, reduce its wear, and further reduce the processing hazards caused by inclined milling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of an aircraft landing gear replacement device;

[0018] Figure 2 yes Figure 1 Schematic diagram of the location where the changing device needs to be milled and modified;

[0019] Figure 3 It is a three-dimensional schematic diagram of the main body of the utility model tooling Figure 1 ;

[0020] Figure 4 yes Figure 3 A three-dimensional diagram of the tooling body at another angle Figure 2 ;

[0021] Figure 5 It is a front view of the main body of the utility model tooling;

[0022] Figure 6 yes Figure 5 A side view of a tooling body;

[0023] Figure 7 yes Figure 5 A top view of the tooling body;

[0024] Figure 8 It is a schematic diagram of the changing device of the utility model when it is installed in the clamping tooling.

[0025] Explanation of the accompanying drawings: 1-changing device, 1a-convex part, 1b-upper inclined surface, 1c-lower inclined surface, 2-tooling body, 2a-installation inclined surface, 2b-block, 2c-through groove, 2d-positioning groove, 2e-avoidance hole, 2f-avoidance angle, 2g-clamp plate fixing hole, 3-main body pressure plate, 4-first screw, 5-first nut, 6-clamp plate, 7-second screw. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model is described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can better understand and implement the technical solution of the present utility model.

[0027] like Figures 1 to 8 As shown, a clamping tool for milling of an aircraft landing gear replacement device comprises:

[0028] The tooling body 2 has at least one installation bevel 2a, a positioning groove 2d matching the shape of the changing device 1 is provided on the installation bevel 2a, an avoidance hole 2e corresponding to the convex portion 1a of the changing device 1 is provided on the bottom surface of the positioning groove 2d, and the convex portion 1a is inserted into the avoidance hole 2e during clamping to avoid interference, and an arc-shaped avoidance angle 2f corresponding to the corner of the changing device 1 is provided at the side bend of the positioning groove 2d to avoid right-angle interference when the changing device 1 is installed into the positioning groove 2d, and a clamping plate fixing hole 2g is also provided on the bottom surface of the positioning groove 2d. A clamping block 2b matching the guide groove of the machine tool is provided at the bottom of the tooling body 2, and the clamping block 2b is processed according to the width of the guide groove and can be tightly fitted and installed on the machine tool, and a through groove 2c is provided along the length direction of the tooling body 2;

[0029] See also Figure 8 , and also includes a fixing assembly for connecting the tool body 2 to the guide rail groove of the machine tool, including a main body pressing plate 3, a first screw 4 and a first nut 5. The main body pressing plate 3 can be inserted into the through groove 2c of the tool body 2 and the two ends of the main body pressing plate 3 are exposed outside the tool body 2. Both ends of the main body pressing plate 3 are provided with through holes for inserting the first screw 4. The first nut 5 is arranged below the guide rail groove of the machine tool and connected to the first screw 4. Tightening the first screw 4 can fix the tool body 2 on the guide rail of the machine tool;

[0030] The clamping assembly used to connect the tool body 2 with the changing device 1 includes a clamping plate 6 and a second screw 7 for pressing the changing device 1 from the outside. The clamping plate 6 is provided with a long hole for the second screw 7 to pass through. The second screw 7 passes through the long hole of the clamping plate 6 and is connected to the clamping plate fixing hole 2g on the tool body 2. The changing device 1 is first installed into the positioning groove 2d, and then the clamping plate 6 is used to press the changing device 1. The second screw 7 is connected to the clamping plate fixing hole 2g. The clamping plate 6 is used to clamp the changing device 1 to prevent loosening and disengagement. During milling, the clamping plate 6 and the positioning groove 2d can ensure that the position of the changing device 1 is stable.

[0031] As a preferred embodiment:

[0032] The tooling body 2 has two symmetrical mounting bevels 2a, both of which are provided with positioning grooves 2d, air-avoiding holes 2e, air-avoiding corners 2f and clamping plate fixing holes 2g. The tooling body 2 can be used to clamp the left landing gear and the right landing gear at one time, which is convenient for rapid milling and further reduces the operation process. Figure 2 After the upper inclined surface 1b or the lower inclined surface 1c of the changing device 1 is milled, the clamping plate 6 needs to be removed, the changing device 1 is turned over and clamped and then the other inclined surface is milled.

[0033] In this embodiment, the positioning groove 2d is arranged obliquely relative to the guide rail groove of the machine tool, and the positioning groove 2d is arranged according to the size of the replacement device 1 and the inclination angle required for processing.

[0034] In this embodiment, the upper part of the positioning groove 2d is an open groove, so that the part to be milled of the changing device 1 clamped on the tooling body 2 is above the tooling body 2, which is convenient for the milling processing of the changing device 1 and its installation and disassembly.

[0035] The above embodiments are only preferred embodiments of the utility model, but cannot be used as limitations of the utility model. Any modifications and improvements based on the concept of the utility model should fall within the protection scope of the utility model. The specific protection scope shall be subject to the claims.

Claims

1. A clamping tool for milling of an aircraft landing gear replacement device, characterized in that: include: A tooling body, wherein the tooling body has at least one installation inclined surface, a positioning groove matching the outer shape of the changing device is provided on the installation inclined surface, a clearance hole corresponding to the convex part of the changing device is provided on the bottom surface of the positioning groove, a circular arc clearance angle corresponding to the corner of the changing device is provided at the side bend of the positioning groove, a clamping plate fixing hole is also provided on the bottom surface of the positioning groove, a clamping block matching the guide rail groove of the machine tool is provided at the bottom of the tooling body, and a through groove is provided on the tooling body along the length direction; A fixing assembly for connecting the tool body to the guide rail groove of the machine tool, comprising a main body pressing plate, a first screw and a first nut, wherein the main body pressing plate can be inserted into the through groove of the tool body and the two ends of the main body pressing plate are exposed outside the tool body, through holes for inserting the first screw are provided at both ends of the main body pressing plate, and the first nut is arranged below the guide rail groove of the machine tool and connected to the first screw; The clamping assembly used to connect the tooling body with the changing device includes a clamping plate and a second screw for pressing the changing device from the outside, a long hole for the second screw to pass through is provided on the clamping plate, and the second screw passes through the long hole of the clamping plate and is connected to the clamping plate fixing hole on the tooling body.

2. The clamping tool for milling of an aircraft landing gear replacement device according to claim 1, characterized in that: The tooling body has two mutually symmetrical installation inclined surfaces, and the positioning grooves, the air avoidance holes, the air avoidance angles and the clamping plate fixing holes are arranged on the two installation inclined surfaces.

3. The clamping tool for milling of the aircraft landing gear replacement device according to claim 2 is characterized in that: The positioning groove is arranged obliquely relative to the guide rail groove of the machine tool.

4. The clamping tool for milling of an aircraft landing gear replacement device according to claim 1, characterized in that: The upper part of the positioning groove is an open groove, so that the to-be-milled part of the changing device clamped on the tooling body is located above the tooling body.

Images