Clamping tool for numerical control turning repair of conical surface of airplane pipe joint

Abstract

The utility model discloses a clamping tool for aircraft pipe joint conical surface numerical control turning repair, and relates to the field of aviation equipment repair. Comprising a numerically controlled lathe jaw, a support arm, a pipe joint, a tool setting gauge and a bolt. The numerically-controlled lathe clamping jaws are used on a numerically-controlled lathe, have long clamping parts and are uniformly distributed around the center line, grooves are formed in the tails of the numerically-controlled lathe clamping jaws, and threaded holes are machined in the grooves. A threaded counterbore is formed in one end of the support arm, is matched with a threaded hole in a clamping jaw groove of the numerical control lathe and is connected with a clamping jaw of the numerical control lathe through a bolt; the other end of the support arm is provided with a thread, and the end close to the thread is processed into an inclined surface for avoiding the pipe joint appearance during clamping. And the internal thread, the thread form and the thread pitch of the support arm are matched with the external thread of the clamped pipe joint. The internal threads of the three supporting arms are used in cooperation to form a circle. The pipe joint is a part needing to be machined, and 74-degree conical surfaces on the two sides need to be repaired. The machining efficiency is remarkably improved; operators only need to install parts, machining is conducted through a numerical control lathe, and physical labor of the operators is reduced.

Description

TECHNICAL FIELD

[0001] The utility model discloses a kind of clamping tools for pipe joint taper numerical control turning repair, relate to the field of aviation equipment repair. BACKGROUND

[0002] During the overhaul of military aircraft, various pipe joints need to be repaired, and the taper generally needs to be turned. Since the runout of the taper and the pitch of the thread of the pipe joint needs to be less than or equal to 0.05 mm, a special-shaped thread part clamping device is generally used at the present stage to clamp the thread position of the pipe joint, and the taper is turned on a general lathe. This processing method is not efficient enough, and the operator needs to manually operate the general lathe.

[0003] The utility model provides a kind of clamping tools for airplane pipe joint taper numerical control turning repair, let this kind of pipe joint parts can be processed on numerical control lathe, can greatly improve production efficiency, reduce operator's labor intensity. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of clamping tools for airplane pipe joint taper numerical control turning repair, so that the taper of the airplane pipe joint can be repaired on a numerical control lathe, and the part is clamped to automatically turn and repair after combining the numerical control lathe processing program, to improve processing efficiency.

[0005] The technical scheme of the utility model:

[0006] A kind of clamping tools for airplane pipe joint taper numerical control turning repair, including numerical control lathe dog 1, support arm 2, pipe joint 3, tool setting gauge 4 and bolt.

[0007] The numerical control lathe dog 1 is a longer clamping part used on a numerical control lathe, and there are three of them, evenly distributed around the center line, with a slot at the tail, and a threaded hole is processed in the slot.

[0008] One end of the support arm 2 is provided with a threaded countersunk hole, which cooperates with the threaded hole in the slot of the numerical control lathe dog 1, and is connected with the numerical control lathe dog 1 through a bolt; the other end of the support arm 2 is provided with a thread, and the end close to the thread is processed into an inclined surface to avoid the shape of the pipe joint 3 when clamping. The internal thread of the support arm 2 cooperates with the external thread of the pipe joint 3 to be clamped. A chamfer is processed near the internal thread, and the internal threads of the three support arms 2 are used in cooperation to form a circle.

[0009] The pipe joint 3 is a part to be processed, and the 74° tapers on both sides need to be repaired.

[0010] The tool setting gauge 4 is installed on the tool holder of the numerical control lathe through magnetic attraction.

[0011] Further, the support arm 2 is made of titanium alloy.

[0012] Further, the numerical control lathe chuck 1 is installed on the numerical control lathe chuck, is uniformly distributed in 120°, and can be linked under the driving of the numerical control lathe chuck to automatically center.

[0013] The utility model discloses the beneficial effect of:

[0014] 1) the processing efficiency is improved obviously;

[0015] 2) the operator only needs to install the part, relies on numerical control lathe processing, reduces the physical labor of operator. DRAWINGS

[0016] Figure 1 The overall structure diagram.

[0017] Figure 2 The arm structure diagram.

[0018] Figure 3 The pipe joint structure diagram.

[0019] In the drawing: 1 numerical control lathe chuck, 2 arm, 3 pipe joint, 4 tool setting gauge. CONCRETE IMPLEMENTATIONS

[0020] The technical scheme of the utility model will be further explained below according to the drawings.

[0021] A kind of aircraft pipe joint conical surface numerical control turning repair clamping tool processing steps:

[0022] 1) the numerical control lathe chuck 1 is installed on the numerical control lathe chuck, the arm 2 is fixed in the numerical control lathe chuck 1 by bolt.

[0023] 2) adjust the position of the numerical control lathe chuck 1 on the numerical control lathe chuck, so that the size formed at one end of the arm 2 is close to the pipe joint 3 thread outer circle required to be clamped.

[0024] 3) use lathe tool, thread cutter etc. in turn to process the other end of the arm 2, so that it forms internal thread matched with the external thread of the pipe joint 3 required to be clamped.

[0025] 4) adjust the numerical control lathe chuck, so that the numerical control lathe chuck is slightly opened, drives the internal thread formed at one end of the arm 2 to open, can make the threaded end of the pipe joint 3 insert.

[0026] 5) pipe joint 3 external thread is arbitrarily close to the internal thread at one end of a arm 2 and is embedded with it, then knob pipe joint 3, so that pipe joint 3 external thread is rotated into the internal thread of the arm 2, so that 74 ° conical surface is completely exposed in the processing area.

[0027] 6) adjust the numerical control lathe chuck, and clamp the pipe joint 3 external thread.

[0028] 7) Adjust the tool rest of the CNC lathe, move the tool setting gauge 7, and make the circular ring plane at the starting position of the 74° taper surface of the pipe joint 3 lightly contact the tool setting gauge 7, and record the position of the tool setting gauge 7.

[0029] 8) Compile the machining program, and machine the 74° taper surface.

[0030] 9) Loosen the chuck of the CNC lathe, and remove the pipe joint 3.

[0031] 10) Set the machine tool, and move the tool setting gauge 4 to the position in step 7.

[0032] 11) Clamping another pipe joint 3 by the same method as in steps 4 and 5, and confirming that the circular ring plane at the starting position of the 74° taper surface of the pipe joint 3 lightly contacts the tool setting gauge 7.

[0033] 12) Retrieve the CNC program in the previous machining, and turn the 74° taper surface for repair.

[0034] 13) Repeat 9-12), and mass-produce.

[0035] In summary, the above is only a preferred embodiment of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clamping tool for numerically controlled turning repair of a conical surface of a pipe joint of an aircraft, characterized in that It comprises a numerical control lathe claw (1), a supporting arm (2), a pipe joint (3), a tool setting gauge (4) and a bolt; The numerical control lathe claw (1) is a claw with a long clamping part used on a numerical control lathe, and there are three claws which are evenly distributed around a center line and have a groove at the tail part and a threaded hole in the groove; The supporting arm (2) has a threaded counterbore hole at one end, cooperates with the threaded hole in the groove of the numerical control lathe claw (1), is connected with the numerical control lathe claw (1) through a bolt, has a thread at the other end, is beveled near the threaded end to avoid the shape of the pipe joint (3) during clamping, and has a thread type and a pitch which are matched with the external thread of the pipe joint (3) to be clamped; and a chamfer is processed near the internal thread, the internal threads of the three supporting arms (2) are cooperatively used to form a circle. The pipe joint (3) is a part to be machined and needs to repair the 74° conical surfaces on both sides. The tool setting gauge (4) is installed on the tool rest of the numerical control lathe through magnetic attraction.

2. The clamping tool for numerically controlled turning repair of a conical surface of a pipe joint of an aircraft according to claim 1, characterized in that The supporting arm (2) is made of titanium alloy.

3. The clamping tool for numerically controlled turning repair of the conical surface of the aircraft pipe joint according to claim 1, characterized in that, The numerical control lathe claw (1) is installed on the chuck of the numerical control lathe, is evenly distributed at an angle of 120°, and can be linked and automatically centered under the driving of the chuck of the numerical control lathe.

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