Cylinder wall drilling and positioning device for special-shaped sleeve part

Abstract

The utility model relates to a positioning device for drilling a hole in a cylinder wall of a special-shaped sleeve part. The positioning device is provided with a positioning shaft, a cushion block, a locking nut, a positioning pin sleeve, a locking pin and a positioning supporting seat, the positioning shaft is a stepped shaft, one end of the positioning shaft is installed on a chuck of numerical control machining equipment, a positioning hole matched with a to-be-formed hole in a workpiece in size and position is formed in the middle of the positioning shaft, and external threads are arranged at the other end of the positioning shaft. The cushion block is arranged at the end, provided with the external threads, of the positioning shaft in a sleeving mode and matched with the external threads on the positioning shaft through the locking nut, and the step face of the cushion block and the step face of the positioning shaft are attached and pressed tightly. The positioning supporting seat is mounted on the horizontal working platform, and a positioning pin hole is formed in the upper end of the positioning supporting seat; the positioning pin sleeve penetrates through a hinge hole in the workpiece and a positioning pin hole in the positioning supporting seat, and a locking pin is assembled at the tail end of the positioning pin sleeve. According to the special-shaped sleeve part drilling device, the problem of drilling in the sleeve wall of a special-shaped sleeve part is solved, and the aims of guaranteeing the maintenance quality and flight safety of an airplane are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft maintenance, in particular to a hole-making and positioning device for a special-shaped sleeve part. Background Art

[0002] As attached Figures 1 to 3 As shown, the canard 1 of a certain aircraft needs to be connected to the actuator via a canard rocker arm 3 provided on the canard shaft beam 2. The canard rocker arm 3 is a special-shaped sleeve-like part. The outer wall of the sleeve is provided with a hinge seat 3-3 connected to the actuator. The hinge seat 3-3 is provided with a hinge hole 3-2. The sleeve of the canard rocker arm 3 is sleeved on the canard shaft beam 2 and fixed to the canard shaft beam 2 by bolts. During the maintenance process of this type of aircraft, due to deformation of the old canard rocker arm 3, the bolts cannot be simultaneously passed through the assembly hole 3-1 on the canard rocker arm 3 and the assembly hole on the canard shaft beam 2, so a new canard rocker arm 3 needs to be replaced. Before replacing the new canard rocker arm 3, a new hole needs to be made on the wall of the canard rocker arm to match the assembly hole on the canard shaft beam 2, which brings about the problem of positioning the new canard rocker arm workpiece. In addition, according to the traditional hole making method, the tool needs to be placed inside the canard shaft beam 2. Due to the small working space, it is not only difficult for the operator's arm to enter, the operation is difficult, and it is easy to cause aperture deviation. In addition, special tools and reamer positioning tools are also required. Therefore, it is very necessary to innovatively design a hole making and positioning device for the wall of a special-shaped sleeve part. Utility Model Content

[0003] The utility model provides a device for drilling and positioning holes in the wall of a special-shaped sleeve part, which aims to achieve reliable positioning of special-shaped sleeve parts through the workpiece positioning device, and drill holes on a new canard rocker arm through an in-situ hole-guiding method to ensure that bolts can simultaneously pass through the assembly holes on the canard rocker arm and the canard shaft beam, thereby achieving the purpose of improving the quality of aircraft maintenance work and flight safety.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for positioning holes in the wall of a special-shaped sleeve part, comprising a positioning shaft, a spacer, a locking nut, a positioning pin sleeve, a locking pin and a positioning support seat; the positioning shaft is a stepped shaft with thin ends and a thick middle, one end of which is mounted on the chuck of a CNC machining device, a positioning hole matching the size and position of the hole to be made on the workpiece is provided in the middle of the positioning shaft, and an external thread is provided at the other end of the positioning shaft; the spacer is sleeved on the end of the positioning shaft with the external thread, and the locking nut cooperates with the external thread on the positioning shaft to fit and press the spacer against the stepped surface of the positioning shaft; the positioning support seat is mounted on a horizontal working platform, and a positioning pin hole is provided on the upper end of the positioning support seat; the positioning pin sleeve passes through the hinge hole on the workpiece and the positioning pin hole on the positioning support seat, and a locking pin is fitted at the end of the positioning pin sleeve.

[0006] The above-mentioned special-shaped sleeve part wall hole positioning device is also provided with a correction rod, which is a stepped cylindrical structure, and its small diameter end matches the positioning hole size on the positioning shaft. The axial dimension of the small diameter end of the correction rod is larger than the sum of the positioning shaft diameter and twice the workpiece sleeve wall thickness.

[0007] The above-mentioned device for making holes and positioning the wall of a special-shaped sleeve part, the positioning pin sleeve consists of a working part, a clamping part and a pin sleeve handle; the working part is a cylindrical structure, and a threaded hole is provided at the outer end of the working part; the clamping part is arranged between the working part and the pin sleeve handle, and the clamping part is a frustum structure.

[0008] The above-mentioned special-shaped sleeve part wall hole positioning device, the locking pin is composed of a screw, a locking part and an operating part; the screw matches the threaded hole of the positioning pin sleeve; the locking part is arranged between the screw and the operating part, and the locking part is a frustum structure.

[0009] The utility model provides a device for drilling and positioning holes in the wall of a special-shaped sleeve component. The device can achieve reliable positioning of special-shaped sleeve components and is particularly suitable for replacing canard rocker arm components during aircraft maintenance. Before replacing the canard rocker arm component, the device, in conjunction with CNC machining equipment, uses an in-situ drilling method to drill holes in the new canard rocker arm. This solves the problems of traditional drilling methods, which are difficult to operate and prone to causing hole diameter deviations, and ensures that bolts can simultaneously pass through the assembly holes in the canard rocker arm and the canard shaft beam, thereby achieving the purpose of improving the quality of aircraft maintenance work and flight safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the assembly structure of the canard, canard shaft beam and canard rocker arm of a certain type of aircraft;

[0011] Figure 2 It is a schematic diagram of the canard rocker arm structure;

[0012] Figure 3 yes Figure 2 Schematic diagram of the middle canard rocker arm after spatial rotation;

[0013] Figure 4 This is a schematic diagram of the hole-making and positioning device for the wall of a special-shaped sleeve part and the workpiece assembly structure;

[0014] Figure 5 yes Figure 4 Schematic diagram of the explosion structure;

[0015] Figure 6 This is a schematic diagram of the positioning pin sleeve structure in the hole-making and positioning device for the special-shaped sleeve part;

[0016] Figure 7 It is a schematic diagram of the locking pin structure in the hole-making and positioning device of the special-shaped sleeve part.

[0017] Explanation of the numbers in the figure:

[0018] 1 is the canard; 2 is the canard shaft beam; 3 is the canard rocker arm (i.e. the workpiece), 3-1 is the assembly hole, 3-2 is the hinge seat, and 3-3 is the hinge hole; 4 is the locating shaft, 4-1 is the locating hole, and 4-2 is the external thread; 5 is the correction rod, 5-1 is the small diameter end; 6 is the spacer; 7 is the locking nut; 8 is the locating pin sleeve, 8-1 is the working part, 8-2 is the clamping part, 8-3 is the pin sleeve handle, and 8-4 is the threaded hole; 9 is the locking pin, 9-1 is the screw, 9-2 is the locking part, and 9-3 is the operating part; 10 is the locating support seat, and 10-1 is the locating pin hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] See Figure 1. Figure 2 、 Figure 3 The canard 1 of a certain type of aircraft needs to be connected to the actuator through the canard rocker arm 3 provided on the canard shaft beam 2. The canard rocker arm 3 is a special-shaped sleeve-like part. A hinge seat 3-3 connected to the actuator is provided on the outer wall of the sleeve. A hinge hole 3-2 is provided on the hinge seat 3-3. The sleeve of the canard rocker arm 3 is sleeved on the canard shaft beam 2 and fixed to the canard shaft beam 2 by bolts. During the maintenance process of this type of aircraft, the old canard rocker arm 3 is deformed, resulting in the bolts being unable to pass through the assembly hole 3-1 on the canard rocker arm 3 and the assembly hole on the canard shaft beam 2 at the same time. Therefore, a new canard rocker arm 3 needs to be installed. Before replacing the new canard rocker arm 3, a new hole needs to be prepared on the wall of the canard rocker arm tube to match the assembly hole on the canard shaft beam 2.

[0021] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5In order to solve the problems of difficult operation and easy hole diameter deviation in the traditional method of making holes on the wall of the sleeve of the canard rocker arm 3, the utility model provides a positioning device for making holes on the wall of a special-shaped sleeve part, which is provided with a positioning shaft 4, a correction rod 5, a spacer 6, a locking nut 7, a positioning pin sleeve 8, a locking pin 9 and a positioning support seat 10; the positioning shaft 4 is a stepped shaft with thin ends and thick middle, one end of which is mounted on the chuck of the CNC machining equipment, the middle part of the positioning shaft 4 is provided with a positioning hole 4-1 that matches the size and position of the hole to be made on the workpiece, and the other end of the positioning shaft 4 is provided with an external thread 4-2; the spacer 6 is sleeved on the end of the positioning shaft 4 with the external thread, The gasket 6 is fitted and pressed against the stepped surface of the positioning shaft 4 by cooperating with the locking nut 7 and the external thread 4-2 on the positioning shaft 4; the positioning support seat 10 is installed on a horizontal working platform, and a positioning pin hole 10-1 is provided at the upper end of the positioning support seat 10; the positioning pin sleeve 8 passes through the hinge hole 3-3 on the workpiece and the positioning pin hole 10-1 on the positioning support seat 10, and a locking pin 9 is fitted at the end of the positioning pin sleeve 8; the correction rod 5 is a stepped cylindrical structure, and its small diameter end 5-1 matches the size of the positioning hole 4-1 on the positioning shaft 4, and the axial dimension of the small diameter end 5-1 of the correction rod 5 is larger than the sum of the positioning shaft diameter and twice the wall thickness of the workpiece sleeve.

[0022] See Figure 4 、 Figure 5 、 Figure 6 The positioning device for making holes in the wall of a special-shaped sleeve part described in the utility model, its positioning pin sleeve 8 is composed of a working part 8-1, a clamping part 8-2 and a pin sleeve handle 8-3; the working part 8-1 is a cylindrical structure, and a threaded hole 8-4 is provided at the outer end of the working part 8-1; the clamping part 8-2 is arranged between the working part 8-1 and the pin sleeve handle 8-3, and the clamping part 8-2 is a frustum structure, which can achieve center positioning through the tapered surface cooperating with the hinge hole 3-1 on the workpiece.

[0023] See Figure 4 、 Figure 5 、 Figure 7 The utility model discloses a device for making a hole and positioning a hole in the wall of a special-shaped sleeve part, wherein the locking pin 9 is composed of a screw rod 9-1, a locking portion 9-2 and an operating portion 9-3; the screw rod 9-1 matches the threaded hole 8-4 of the positioning pin sleeve 8; the locking portion 9-2 is arranged between the screw rod 9-1 and the operating portion 9-3, and the locking portion 9-2 is a frustum structure, which can realize the center positioning function by cooperating with the hinge hole 3-1 on the workpiece through the conical surface.

[0024] See Figures 1 to 7 The utility model is used for preparing mounting holes on the wall of a new aircraft canard rocker arm sleeve during aircraft maintenance. The hole making operation can be completed by an in-situ hole-guiding process. The specific operation steps are as follows:

[0025] a. Select a sample, a canard rocker arm 3 that can be assembled with the aircraft canard shaft beam 2 via bolts. Using the two sets of assembly holes 3-1 on the canard rocker arm 3 as a reference, machine two sets of positioning holes 4-1 on the positioning shaft 4 of the special-shaped sleeve wall hole-making and positioning device.

[0026] b. Install the sample. Clamp the positioning shaft 4-1 of the hole-making positioning device for the special-shaped sleeve part on the chuck of the CNC machining equipment. Assemble the sample and the positioning shaft 4-1.

[0027] c. Fix the sample. Pass the small diameter ends 5-1 of two calibration rods 5 with exactly the same size through the assembly hole 3-1 of the sample and the positioning hole 4-1 on the positioning shaft 4. Then, press and fix the sample with the spacer 6 and the lock nut 7.

[0028] d. Alignment by dialing. Adjust the angle of the spindle toolholder of the CNC machining equipment and use the micrometer installed on the spindle toolholder of the CNC machining equipment to measure so that the upper end face runout of the correction rod 5 inserted into the two assembly holes of the sample is less than 0.01mm. Record the coordinate value of the assembly hole 3-1 on the sample through the CNC machining equipment.

[0029] e. Install the positioning support seat. Pass one end of the positioning pin sleeve 8 with the threaded hole 8-4 through the hinge hole 3-3 on the sample and the positioning pin hole 10-1 on the positioning support seat 10. Then, assemble it with the screw 9-1 of the locking pin 9 through the threaded hole 8-4 to achieve the horizontal angle positioning of the positioning pin hole 10-1 on the positioning support seat 10. Then, fix the positioning support seat 10 on a horizontal workbench.

[0030] f. Replace the workpiece to be processed, remove the sample, and assemble the workpiece to be processed with the hole-making and positioning device of the special-shaped sleeve part;

[0031] g. Perform hole making operations on the workpiece according to the assembly hole coordinate values on the sample recorded by the CNC machining equipment.

Claims

1. A device for making holes and positioning holes in the wall of a special-shaped sleeve part, characterized by: A positioning shaft (4), a spacer (6), a locking nut (7), a positioning pin sleeve (8), a locking pin (9) and a positioning support seat (10) are provided; the positioning shaft (4) is a stepped shaft with thin ends and thick middle, one end of which is mounted on the chuck of the CNC machining equipment, the middle of the positioning shaft (4) is provided with a positioning hole (4-1) that matches the size and position of the hole to be made on the workpiece, and the other end of the positioning shaft (4) is provided with an external thread (4-2); the spacer (6) is sleeved on the positioning shaft (4) with an external thread One end of the positioning shaft (4) is matched with the external thread (4-2) on the positioning shaft (4) through a locking nut (7), so that the pad (6) is pressed against the stepped surface of the positioning shaft (4); the positioning support seat (10) is installed on a horizontal working platform, and a positioning pin hole (10-1) is provided on the upper end of the positioning support seat (10); the positioning pin sleeve (8) passes through the hinge hole (3-3) on the workpiece and the positioning pin hole (10-1) on the positioning support seat (10), and a locking pin (9) is equipped at the end of the positioning pin sleeve (8).

2. The hole-making and positioning device for a special-shaped sleeve part according to claim 1, characterized in that: A correction rod (5) is also provided. The correction rod (5) is a stepped cylindrical structure. The small diameter end (5-1) of the correction rod (5) matches the size of the positioning hole (4-1) on the positioning shaft (4). The axial dimension of the small diameter end (5-1) of the correction rod (5) is greater than the sum of the diameter of the positioning shaft and twice the wall thickness of the workpiece sleeve.

3. The hole-making and positioning device for a special-shaped sleeve part according to claim 2, characterized in that: The positioning pin sleeve (8) is composed of a working part (8-1), a pressing part (8-2) and a pin sleeve handle (8-3); the working part (8-1) is a cylindrical structure, and a threaded hole (8-4) is provided at the outer end of the working part (8-1); the pressing part (8-2) is arranged between the working part (8-1) and the pin sleeve handle (8-3), and the pressing part (8-2) is a truncated cone structure.

4. The hole-making and positioning device for a special-shaped sleeve part according to claim 2 or 3, characterized in that: The locking pin (9) is composed of a screw rod (9-1), a locking portion (9-2) and an operating portion (9-3); the screw rod (9-1) matches the threaded hole (8-4) of the positioning pin sleeve (8); the locking portion (9-2) is arranged between the screw rod (9-1) and the operating portion (9-3), and the locking portion (9-2) is a truncated cone structure.

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