A manual tool for trimming the conical sealing surface of a hydraulic pipeline joint

Abstract

A manual tool for trimming the conical sealing surface of a hydraulic pipeline joint includes a guide sleeve, a feed nut, and a template countersink. The template countersink comprises a cutter head, a cutter shank, and an operating handle. The cutter shank has a cylindrical structure, and the cutter head is located at the front end of the cutter shank. Two sets of cutting edges matching the conical sealing surface of the joint to be trimmed are symmetrically arranged on the cutter head. The operating handle is located at the other end of the cutter shank. One end of the guide sleeve has a threaded hole for connecting to the joint to be trimmed, and the other end has an external thread that mates with the feed nut. The inner wall of the guide sleeve is a cylindrical surface that mates with the cutter shank. The inner wall of the feed nut has a stepped hole structure. The large-diameter end of the stepped hole has an internal thread that mates with the external thread on the guide sleeve, and the small-diameter end of the stepped hole is a smooth hole through which the template countersink's operating handle can pass. This utility model, through the cooperation of the guide sleeve, feed nut, and template countersink, achieves rapid trimming of the conical surface of a hydraulic pipeline joint, thereby improving work efficiency and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of aviation component repair technology, specifically a manual trimming tool for the conical sealing surface of a hydraulic pipeline connector in an aircraft hydraulic system. Background Technology

[0002] In aircraft hydraulic systems, numerous fittings such as two-way connectors, three-way connectors, and right-angle connectors utilize a tapered surface sealing structure, as shown in the attached... Figure 1 The three-way conical sealing surface joint 1 shown has a conical sealing surface 1-1 on its outer end. As aircraft are subjected to high-frequency alternating vibration impact loads during flight, the roughness index of the conical sealing surface 1-1 of this type of joint pipe fitting deteriorates, resulting in a sharp decline in the sealing performance of the joint and causing hydraulic system fluid leakage problems.

[0003] Currently, the finishing of the conical surface of pipe fittings requires specialized machine tools, which not only incurs high equipment costs but also involves complex operations. This makes the finishing of the conical sealing surface of pipe fittings a bottleneck restricting the improvement of aircraft repair efficiency. To solve this problem, it is necessary to design an innovative manual finishing tool for the conical sealing surface of hydraulic pipeline fittings on aircraft. Utility Model Content

[0004] This utility model provides a manual trimming tool for the conical sealing surface of a hydraulic pipeline joint. It aims to quickly trim the conical sealing surface of the hydraulic pipeline joint by using components such as a guide sleeve, a cutting nut, and a template countersink, thereby improving work efficiency and reducing maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manual tool for trimming the conical sealing surface of a hydraulic pipeline joint, comprising a guide sleeve, a cutting nut, and a template countersink;

[0007] The template countersink includes a cutter head, a cutter shank, and an operating handle. The cutter shank has a cylindrical structure. The cutter head is arranged at the front end of the cutter shank, and two sets of cutting edges that match the conical sealing surface of the joint to be repaired are symmetrically arranged on the cutter head. The operating handle is arranged at the other end of the cutter shank.

[0008] One end of the guide sleeve is provided with a threaded hole for connecting to the joint to be repaired, and the other end is provided with an external thread for engaging with the feed nut. The inner sidewall of the guide sleeve is a cylindrical surface that engages with the tool holder.

[0009] The inner wall of the feed nut has a stepped hole structure. The large-diameter end of the stepped hole is provided with an internal thread that mates with the external thread on the guide sleeve. The small-diameter end of the stepped hole is a smooth hole through which the template countersink handle can pass.

[0010] The aforementioned manual trimming tool for the conical sealing surface of the hydraulic pipeline joint is also equipped with a locking nut; the locking nut is fitted onto the threaded connection of the joint to be trimmed, and the axial relative position of the guide sleeve and the joint to be trimmed is adjusted by the locking nut to lock and fix the guide sleeve and the joint to be trimmed.

[0011] The aforementioned manual trimming tool for the conical sealing surface of the hydraulic pipeline joint has a compression spring installed between the feed nut and the template countersink. The template countersink has a limiting flange installed between the tool shank and the operating handle. The compression spring is fitted outside the operating handle of the template countersink, and both ends of the compression spring abut against the limiting flange and the stepped surface of the stepped hole in the inner wall of the feed nut, respectively.

[0012] The aforementioned manual trimming tool for the conical sealing surface of the hydraulic pipeline joint includes a chip discharge port on the guide sleeve. The chip discharge port is located at the position corresponding to the cutting head of the template countersink, and is evenly arranged along the circumference of the guide sleeve, with no fewer than three sets.

[0013] The aforementioned hydraulic pipeline connector conical sealing surface manual trimming tool has a multi-faceted flange on the outer wall of the guide sleeve that mates with the screwing tool.

[0014] The aforementioned manual trimming tool for the conical sealing surface of hydraulic pipeline joints has a cylindrical outer surface for the feed nut, with anti-slip textures provided on the cylindrical surface.

[0015] The aforementioned manual trimming tool for the conical sealing surface of the hydraulic pipeline joint has a clamping surface formed on the outer end of the operating handle of the template countersink by removing material, which cooperates with the screwing tool.

[0016] This utility model provides a manual tool for trimming the conical sealing surface of a hydraulic pipeline joint. It connects to the joint to be trimmed through a threaded hole at one end of a guide sleeve. A template countersink is inserted into the inner hole of the guide sleeve. The axial position of the template countersink is adjusted by the feed nut so that the cutter head contacts the conical surface of the joint. Then, a screwdriver is used to rotate the template countersink, and the cutting edge of the template countersink precisely trims the conical surface of the joint. During this process, the inner wall of the guide sleeve and the template countersink shank cooperate to ensure the coaxiality of the template countersink in trimming the conical surface of the joint. Furthermore, the cutting debris generated during trimming can be discharged through the chip removal hole on the guide sleeve. Therefore, this utility model, through the cooperation of the guide sleeve, feed nut, and template countersink, achieves rapid trimming of the conical surface of a hydraulic pipeline joint, thereby improving work efficiency and reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a tee joint with a conical sealing surface according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the guide sleeve;

[0020] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle AA section;

[0021] Figure 5 This is the isometric view of the guide sleeve;

[0022] Figure 6 This is a schematic diagram (half section) of the feed nut structure;

[0023] Figure 7 This is a schematic diagram of the template countersink structure;

[0024] Figure 8 yes Figure 7 Side view.

[0025] Explanation of each label in the diagram:

[0026] 1 is a tee fitting with a conical sealing surface (i.e., the fitting to be repaired), 1-1 is the conical sealing surface, and 1-2 is the threaded connection part;

[0027] 2 is the guide sleeve, 2-1 is the threaded hole, 2-2 is the chip discharge port, 2-3 is the inner wall of the guide sleeve, 2-4 is the multi-faceted flange, and 2-5 is the external thread.

[0028] 3 is the feed nut, 3-1 is the large diameter end of the stepped hole, 3-2 is the small diameter end of the stepped hole, and 3-3 is the anti-slip texture;

[0029] 4 represents a compression spring;

[0030] 5 is the template countersink, 5-1 is the cutter head, 5-2 is the cutter shank, 5-3 is the limiting flange, 5-4 is the operating handle, and 5-5 is the clamping surface;

[0031] 6 is the lock nut. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Referring to Figure 1, a three-way conical sealing surface connector 1 has a conical sealing surface 1-1 on its outer end and a threaded connection part 1-2 on the inner side of the conical sealing surface 1-1.

[0034] See Figure 2This utility model provides a manual trimming tool for the conical sealing surface of a hydraulic pipeline joint. It is equipped with a guide sleeve 2, a cutting nut 3, and a template countersink 5. One end of the guide sleeve 2 can be connected to the joint 1 to be trimmed. The template countersink 5 is inserted into the inner hole of the guide sleeve 2. The axial position of the template countersink 5 is adjusted by the cutting nut 3 so that its working end contacts the conical sealing surface 1-1 of the joint 1 to be trimmed. Then, the template countersink 5 is rotated by the screwing tool to trim the conical sealing surface 1-1 of the joint 1 to be trimmed. During this process, the inner side wall of the guide sleeve 2 cooperates with the template countersink 5 to ensure the coaxiality of the trimming of the conical sealing surface 1-1 of the joint 1 to be trimmed.

[0035] See Figure 2 , Figure 7 , Figure 8 The manual trimming tool for the conical sealing surface of the hydraulic pipeline joint described in this utility model includes a template countersink 5 comprising a cutter head 5-1, a cutter bar 5-2, and an operating handle 5-4. The cutter bar 5-2 has a cylindrical structure. The cutter head 5-1 is arranged at the front end of the cutter bar 5-2. Two sets of cutting edges matching the conical sealing surface 1-1 of the joint to be trimmed are symmetrically arranged on the cutter head 5-1. The operating handle 5-4 is arranged at the other end of the cutter bar 5-2.

[0036] See Figure 2 , Figure 3 , Figure 4 , Figure 5 The hydraulic pipeline connector conical sealing surface manual trimming tool of this utility model has a guide sleeve 2 with a threaded hole 2-1 at one end for connecting to the connector to be trimmed, and an external thread 2-5 at the other end for engaging with the feed nut 3. The inner side wall 2-3 of the guide sleeve is a cylindrical surface that engages with the tool bar 5-2.

[0037] See Figure 2 , Figure 3 , Figure 5 , Figure 6 The hydraulic pipeline connector conical sealing surface manual trimming tool of this utility model has a stepped hole structure on the inner wall of the infeed nut 3. The large diameter end 3-1 of the stepped hole is provided with an internal thread that mates with the external thread 2-5 on the guide sleeve 2. The small diameter end 3-2 of the stepped hole is a smooth hole through which the operating handle 5-4 of the template countersink 5 can pass. The small diameter end 3-2 of the stepped hole and the operating handle 5-4 of the template countersink 5 are fitted with a clearance fit.

[0038] See Figure 2In a preferred embodiment of the hydraulic pipeline connector conical sealing surface manual trimming tool of this utility model, a compression spring 4 is provided between the feed nut 3 and the template countersink 5, and a limiting flange 5-3 is provided between the tool bar 5-2 and the operating handle 5-4 of the template countersink 5. The compression spring 4 is fitted outside the operating handle 5-4 of the template countersink 5, and both ends of the compression spring 4 abut against the limiting flange 5-3 and the stepped surface of the stepped hole in the inner wall of the feed nut 3, respectively.

[0039] See Figure 2 In a preferred embodiment of the hydraulic pipeline connector conical sealing surface manual trimming tool of this utility model, the guide sleeve 2 is further provided with a chip discharge port 2-2; the chip discharge port 2-2 is located at the position corresponding to the cutting head 5-1 of the template countersink 5, and is evenly arranged along the circumference of the guide sleeve 2, with a number of no less than three sets.

[0040] See Figure 2 In a preferred embodiment of the hydraulic pipeline connector conical sealing surface manual trimming tool of this utility model, the outer wall of the guide sleeve 2 is provided with a multi-faceted flange 2-4 that cooperates with the screwing tool; the outer surface of the feed nut 3 is a cylindrical surface, and anti-slip texture 3-3 is provided on the cylindrical surface; the outer end of the operating handle 5-4 of the template countersink 5 forms a clamping surface 5-5 that cooperates with the screwing tool by removing material.

[0041] See Figures 1 to 8When using this invention to trim the conical sealing surface of a hydraulic pipeline joint, a vise is used to clamp and fix the base of the joint 1 to be trimmed; the threaded hole 2-1 of the guide sleeve 2 is assembled with the threaded connection part 1-2 of the joint 1 to be trimmed; the guide sleeve 2 is adjusted to a suitable axial position by using the locking nut 6; the locking nut 6 is tightened against the end face of the threaded hole 2-1 of the guide sleeve 2 to axially lock and fix the guide sleeve 2; the template countersink 5 engages with the inner sidewall 2-3 of the guide sleeve through the outer cylindrical surface of the tool holder 5-2 to ensure the conical seal of the joint 1 to be trimmed. The coaxiality of surface 1-1 with the axis of the base body is checked; by adjusting the feed nut 3, the template countersink 5 is moved to the set axial cutting position, thus completing the assembly of this utility model with the workpiece to be repaired 1; then, the matching wrench tool is used to apply axial feed and rotational driving force to the template countersink 5, and the workpiece is repaired through the cutting edge 5-1 of the template countersink 5. The cutting chips generated during the repair process can be discharged through the chip discharge hole 2-2 on the guide sleeve 2, and the heat generated during the cutting process can also be discharged through the chip discharge hole 2-2 on the guide sleeve 2. When the infeed nut 3 adjusts the axial direction of the template countersink 5, the spring force of the compression spring 4 can be used to enable the template countersink 5 to achieve a damped progressive infeed mode. This avoids rigid contact between the cutting edge and the conical sealing surface 1-1 on the joint to be repaired during the cutting process. Furthermore, during the workpiece repair process, as the resistance of the compression spring 4 increases, the infeed amount of the cutting edge of the cutter head 5-1 gradually decreases, which can fully ensure the repair accuracy of the conical sealing surface 1-1 and meet the surface roughness index requirements.

Claims

1. A manual tool for trimming the conical sealing surface of a hydraulic pipeline joint, characterized in that: It is equipped with a guide sleeve (2), a cutting nut (3) and a template countersink (5); The template countersink (5) includes a cutting head (5-1), a cutting shank (5-2), and an operating handle (5-4). The cutting shank (5-2) is a cylindrical structure. The cutting head (5-1) is arranged at the front end of the cutting shank (5-2). Two sets of cutting edges matching the conical sealing surface (1-1) of the joint to be repaired are symmetrically arranged on the cutting head (5-1). The operating handle (5-4) is arranged at the other end of the cutting shank (5-2). The guide sleeve (2) has a threaded hole (2-1) at one end that connects to the joint to be repaired, and an external thread (2-5) at the other end that mates with the feed nut (3). The inner sidewall (2-3) of the guide sleeve is a cylindrical surface that mates with the tool holder (5-2). The inner wall of the feed nut (3) is a stepped hole structure. The large diameter end (3-1) of the stepped hole is provided with an internal thread that matches the external thread (2-5) on the guide sleeve (2). The small diameter end (3-2) of the stepped hole is a smooth hole through which the operating handle (5-4) of the template countersink (5) can pass.

2. The hydraulic line joint conical seal face hand skiving tool of claim 1, wherein: A locking nut (6) is also provided; the locking nut (6) is fitted onto the threaded connection part (1-2) of the joint to be repaired, and the axial relative position of the guide sleeve (2) and the joint to be repaired is adjusted by the locking nut (6) to lock and fix the guide sleeve (2) and the joint to be repaired.

3. The hydraulic line joint conical seal face hand skiving tool of claim 2, wherein: A compression spring (4) is provided between the feed nut (3) and the template countersink (5). The template countersink (5) has a limiting flange (5-3) between the tool bar (5-2) and the operating handle (5-4). The compression spring (4) is fitted outside the operating handle (5-4) of the template countersink (5). The two ends of the compression spring (4) abut against the limiting flange (5-3) and the stepped surface of the stepped hole in the inner wall of the feed nut (3), respectively.

4. The hydraulic line joint conical seal face hand skiving tool of any one of claims 1 to 3, characterized in that: The guide sleeve (2) is also provided with chip discharge ports (2-2); the chip discharge ports (2-2) are located at the corresponding part of the cutting head (5-1) of the template countersink (5), and are evenly arranged along the circumference of the guide sleeve (2), with no less than three sets.

5. The hydraulic line joint conical seal face hand skiving tool of claim 4, wherein: The outer wall of the guide sleeve (2) is provided with a multi-faceted flange (2-4) that cooperates with the screwing tool.

6. The hydraulic line joint conical seal face hand skiving tool of claim 4, wherein: The outer surface of the feed nut (3) is a cylindrical surface, and anti-slip texture (3-3) is provided on the cylindrical surface.

7. The hydraulic line joint conical seal face hand skiving tool of claim 4, wherein: The outer end of the operating handle (5-4) of the template countersink (5) forms a clamping surface (5-5) that cooperates with the turning tool by removing material.

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