Engine nozzle shell chambering and clamping tool

Abstract

The utility model discloses an engine nozzle shell chambering and clamping tool which comprises a base and a hold-down ring, a nozzle is clamped between the base and the hold-down ring, and the engine nozzle shell chambering and clamping tool is characterized in that more than three hold-down rods are arranged on the base in the longitudinal direction, threads are tapped on the hold-down rods, lantern rings with the same amount as the hold-down rods are arranged on the side face of the hold-down ring, and the hold-down rods are arranged on the hold-down rings. The sleeve ring is arranged on the pressing rod in a sleeving mode, a locking nut is arranged on the portion, above the sleeve ring, of the pressing rod, a pressing groove is formed in the bottom of the pressing ring, and the inner wall of the pressing groove makes contact with the top face and the side face of the nozzle. According to the tool structure, the position and the central axis of the annular part can be positioned and fixed through one hold-down ring, the clamping efficiency is extremely high, good stability is achieved, after hold-down rings of different sizes are replaced, all the annular parts can be clamped through the tool structure, and the applicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of engine nozzle processing, in particular to an engine nozzle shell hole enlarging and clamping tool. Background Art

[0002] The fuel nozzle is one of the key components of the engine. The fuel nozzle is a special nozzle for atomizing fuel and can produce hollow and solid spray shapes.

[0003] Our company previously announced an invention patent for an aircraft engine fuel nozzle assembly method, with the announcement number CN114576652 A. The patent discloses a nozzle structure with a nozzle at the center and a conical concave surface on the upper surface of the nozzle. In order to expand the hole of the nozzle at the center and ensure the yield rate, it is urgent to design a tooling to clamp it. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an engine nozzle housing hole enlarging and clamping tool, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an engine nozzle housing hole expansion clamping tool, comprising a base and a clamping ring, the nozzle is clamped between the base and the clamping ring, and is characterized in that: more than three clamping rods are arranged on the base along the longitudinal direction, the clamping rods are tapped with threads, and a ring equal to the clamping rod is arranged on the side of the clamping ring, the ring is sleeved on the clamping rod, and a locking nut is arranged on the clamping rod above the ring, and a clamping groove is arranged at the bottom of the clamping ring, and the inner wall of the clamping groove contacts the top surface and the side surface of the nozzle respectively.

[0006] As a preferred technical solution of the utility model, the base is provided with a mounting hole for mounting on a processing platform.

[0007] As an optimal technical solution of the utility model, three screw pairs are welded on the base, the three screw pairs are in an equilateral triangle array, and screws are mounted on the screw pairs. A tightening block is rotatably arranged at the end of the screw close to the nozzle, and a rotating disk is arranged at the other end.

[0008] As a preferred technical solution of the utility model, the contact surface between the pressing block and the nozzle is arc-shaped, and the curvature is consistent with the curvature of the side surface of the nozzle.

[0009] As a preferred technical solution of the present utility model, the locking nut is a nut with ears.

[0010] As a preferred technical solution of the utility model, a through hole is provided at the center of the base, and the through hole is coaxial with the center hole of the nozzle.

[0011] The beneficial effects of the utility model are as follows: the tooling is used to clamp nozzles with conical concave surfaces, and the position and central axis of the annular parts can be positioned and fixed by a clamping ring. The clamping efficiency is extremely high and the tooling structure has good stability. After replacing clamping rings of different sizes, the tooling structure can clamp all annular parts and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the utility model.

[0014] In the figure: 1 nozzle, 2 base, 3 clamping ring, 4 clamping rod, 5 collar, 6 locking nut, 7 mounting hole, 8 screw pair, 9 screw, 10 tightening block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2 ,in, Figure 1 Is the non-clamping state, Figure 2 In the clamping state, the utility model provides a technical solution: an engine nozzle housing hole expansion clamping tool, including a base 2 and a clamping ring 3, the base 2 is provided with a mounting hole 7 for mounting on a processing platform, the nozzle 1 is clamped between the base 2 and the clamping ring 3, a through hole is provided at the center of the base 2, the through hole is coaxial with the center hole of the nozzle 1, and the base 2 is prevented from interfering with the movement of the tool during hole expansion, more than three clamping rods 4 are provided in the longitudinal direction on the base 2, the clamping rod 4 is tapped with threads, a collar 5 equal to the clamping rod 4 is provided on the side of the clamping ring 3, the collar 5 is sleeved on the clamping rod 4, a locking nut 6 is provided on the clamping rod 4 above the collar 5, and the locking nut 6 is a nut with ears, so that the nozzle 1 can be clamped without the aid of tools;

[0017] A clamping groove is provided at the bottom of the clamping ring 3, and the inner wall of the clamping groove contacts the top surface and the side surface of the nozzle 1 respectively, so as to realize the positioning and fixing of the position and the central axis of the annular nozzle 1;

[0018] Three screw pairs 8 are welded on the base 2, and the three screw pairs 8 are in an equilateral triangle array. A screw 9 is installed on the screw pair 8. A tightening block 10 is rotatably arranged at the end of the screw 9 close to the nozzle 1. The function of the tightening block 10 is to assist the clamping ring 3 in positioning and fixing the nozzle 1 to enhance the clamping stability. The contact surface between the tightening block 10 and the nozzle 1 is arc-shaped, and the curvature is consistent with the curvature of the side of the nozzle 1, which increases the contact area and enhances the tightening stability of the side of the nozzle 1. A rotating disk is arranged at the other end.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine nozzle housing expansion clamping tool, comprising a base (2) and a clamping ring (3), wherein a nozzle (1) is clamped between the base (2) and the clamping ring (3), and characterized in that: More than three clamping rods (4) are arranged on the base (2) in the longitudinal direction, the clamping rods (4) are threaded, and the side of the clamping ring (3) is provided with a sleeve (5) equal to the number of the clamping rods (4), the sleeve (5) is sleeved on the clamping rod (4), and a locking nut (6) is arranged on the clamping rod (4) above the sleeve (5); The bottom of the clamping ring (3) is provided with a clamping groove, and the inner wall of the clamping groove is in contact with the top surface and the side surface of the nozzle (1) respectively.

2. The engine nozzle housing hole enlarging and clamping tool according to claim 1, characterized in that: The base (2) is provided with a mounting hole (7) for mounting on a processing platform.

3. The engine nozzle housing hole enlarging and clamping tool according to claim 1, characterized in that: Three screw rod pairs (8) are welded on the base (2), and the three screw rod pairs (8) are arranged in an equilateral triangle array. A screw rod (9) is mounted on the screw rod pair (8). A tightening block (10) is rotatably arranged at the end of the screw rod (9) close to the nozzle (1), and a rotating disk is arranged at the other end.

4. The engine nozzle housing hole enlarging and clamping tool according to claim 3, characterized in that: The contact surface between the pressing block (10) and the nozzle (1) is arc-shaped, and the curvature is consistent with the curvature of the side surface of the nozzle (1).

5. The engine nozzle housing hole enlarging and clamping tool according to claim 1, characterized in that: The locking nut (6) is a nut with ears.

6. The engine nozzle housing hole enlarging and clamping tool according to claim 1, characterized in that: A through hole is provided at the center of the base (2), and the through hole is coaxial with the center hole of the nozzle (1).

Images