Connector end face finish machining device

Abstract

The utility model relates to the technical field of aircraft manufacturing and is used for finish machining of the end face of a butt joint after aircraft assembly. The utility model discloses a finish machining device for an end face of a connector. The finish machining device comprises a cutter bar, a drill plate and an end face counter bit, one end of the cutter bar is connected with the power device and rotates under the action of the power device, and the other end of the cutter bar sequentially penetrates through the drill plate hole and the end face counter bit and then is inserted into a to-be-machined hole of a product connector; the drill plate is installed on the tool, and a drill plate hole of the drill plate is concentric with a to-be-machined hole of a product connector. The end face counter bit is connected with the cutter bar and used for machining the product connector end face. The end face counter bit has the advantages that the cutter bar is used as a front guide and a rear guide to ensure that the end face counter bit is perpendicular to a hole axis during machining, so that the machined end face is perpendicular to the hole axis; the planeness of a plurality of joint holes can be ensured through the drill plate and the limiter; the utility model has the advantages of simple structure, convenient manufacture, convenient assembly and disassembly, capability of using a high-power pneumatic drill to finish the end face, and high processing economy.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft manufacturing and is used for fine processing of end faces of butt joints after aircraft assembly. Background Art

[0002] During aircraft manufacturing, margins are added to butt joint holes or surfaces to eliminate assembly errors. After assembly, specialized equipment is used to re-machine the joint holes or end faces to meet mating requirements. This end face finishing process typically utilizes motor-driven heads or CNC equipment, resulting in high procurement and installation costs and lengthy production cycles. This is not economical for small batches or small end face diameters, and manual machining can be difficult to guarantee face flatness and machining volume. Utility Model Content

[0003] The utility model aims to provide a joint end surface finishing device which has a simple structure and is easy to assemble and disassemble.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a joint end face finishing device, which includes a tool rod, a drilling template and an end face countersink; one end of the tool rod is connected to the power device and rotates under the action of the power device, and the other end passes through the drilling template hole and the end face countersink in turn and is inserted into the hole to be processed of the product joint; the drilling template is installed on the tooling, and its drilling template hole is concentric with the hole to be processed of the product joint; the end face countersink is connected to the tool rod and is used to process the end face of the product joint.

[0005] Preferably, the end countersink is connected to the tool rod via a notch and a cylindrical pin.

[0006] Furthermore, the finishing device also includes a limiter, and the limiter spindle is connected to the power device; the tool bar taper shank is connected to the power device through the limiter spindle.

[0007] Preferably, the inner diameter of the positioning sleeve in the limiter is adjusted according to the diameter of the tool rod of the machined joint.

[0008] Preferably, during processing, the positioning sleeve in the limiter is fitted with the drilling template surface to limit the processing amount of the end face countersink on the end face of the product joint.

[0009] Preferably, the power device is a high-power pneumatic drill.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The limiter can control the machining amount of the joint end face;

[0012] 2. Use the tool bar as the front and rear guide to ensure that the end face is perpendicular to the hole axis during countersinking, thereby ensuring that the processed end face is perpendicular to the hole axis;

[0013] 3. The flatness of multiple joint holes can be ensured by drilling templates and limiters;

[0014] 4. The utility model has a simple structure, is easy to manufacture and disassemble, and can use a high-power air drill to fine-process the end face, with high processing economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the knife bar structure in an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the limiter and the positioning sleeve in the embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the end face countersink structure in an embodiment of the present utility model;

[0019] Figure 5 yes Figure 4 Left view;

[0020] Figure 6 This is a schematic diagram of the use of an embodiment of the utility model;

[0021] Among them, 1- tool bar; 2- limiter; 3- end face countersink; 4- drilling template; 5- product joint; 6- limiter positioning sleeve; 7- limiter spindle. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-6 The utility model is further described as follows: a joint end surface finishing device comprises a tool bar 1, a stopper 2, an end surface countersink 3 and a drilling template 4. Figure 1 As shown, the tool shank 1 is integrally connected to the stopper 2 via a tapered shank; the tool shank 1 is also integrally connected to the cylindrical pin within the end countersink 3 via a notch. During the finishing process, the front end of the tool shank is guided by the hole to be machined in the product connector 5 and the drilling template 4. This ensures that the tool shank 1 is coaxial with the axis of the hole to be machined during end machining, ensuring that the finished connector end face is perpendicular to the axis of the machined hole.

[0023] The main shaft 7 in the limiter is connected to a high-power air drill, and the inner diameter of the positioning sleeve 6 in the limiter is adjusted according to the diameter of the tool rod of the machined joint. During processing, the positioning sleeve fits with the 4 surfaces of the drill template, limiting the processing amount of the end face countersink 3 on the end face; the steel ball in the limiter can make the main shaft 7 of the limiter rotate and the positioning sleeve 6 of the limiter can stably fit the drill template 4 to ensure that the drill template 4 is not scratched.

[0024] The usage process is as follows:

[0025] Step 1: Position the product on the fixture and secure it to ensure that it does not move under external forces. Position and secure the drilling template 4 on the fixture, ensuring that the drilling template hole is concentric with the hole to be processed in the product connector 5;

[0026] Step 2: Insert the tool rod 1 into the stopper 2. The tool rod 1 rotates along with the stopper spindle 7 without deflection.

[0027] Step 3: First, place the end countersink 3 between the drilling template 4 and the product joint 5. Then, insert the tool arbor with a limiter through the drilling template 4 and the end countersink 3 into the hole to be processed in the product joint. Rotate the tool arbor 1 to lock the end countersink 3 and the tool arbor 1.

[0028] Step 4: Use a high-power air drill to clamp the limiter spindle 7, and keep the clamping stable without any vibration;

[0029] Step 5: Hold the high-power air drill in one hand and the limiter positioning sleeve 6 in the other hand, start the air drill, apply pressure and feed along the axial direction of the product joint hole to be processed to finish the end face of the product joint;

[0030] Step 6: After the stopper end faces are aligned with the drill template, stop finishing. Disassemble and remove the end countersink and toolholder. Use a check block to check the distance between the joint end faces and the drill template. Finish machining when the distance meets the requirements.

[0031] The above embodiments are merely preferred embodiments of the present invention and do not limit the present invention. Any extensions or modifications made by those skilled in the art without departing from the principles of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A joint end surface finishing device, characterized by: The finishing device includes a tool rod, a drilling template and an end face countersink; one end of the tool rod is connected to a power device and rotates under the action of the power device, and the other end passes through the drilling template hole and the end face countersink in sequence and is inserted into the hole to be processed of the product joint; the drilling template is installed on the tooling, and its drilling template hole is concentric with the hole to be processed of the product joint; the end face countersink is connected to the tool rod and is used to process the end face of the product joint.

2. The joint end surface finishing device according to claim 1, characterized in that: The end face countersink is connected to the tool shank through a slot and a cylindrical pin.

3. The joint end surface finishing device according to claim 1, characterized in that: The finishing device also includes a limiter, and the limiter spindle is connected to the power device; the tool bar taper shank is connected to the power device through the limiter spindle.

4. The joint end surface finishing device according to claim 3, characterized in that: The inner diameter of the limiter positioning sleeve is adjusted according to the diameter of the tool rod of the machined joint.

5. The joint end surface finishing device according to claim 3, characterized in that: During processing, the limiter positioning sleeve fits against the drill template surface to limit the processing amount of the end face countersink on the end face of the product joint.

6. The joint end surface finishing device according to claim 1, characterized in that: The power unit is a high-power air drill.

Images