Special tool for turning elbow joint

Abstract

The utility model relates to a special tool for turning an elbow joint, which comprises a chassis, a mounting plate and a clamping mechanism, and is characterized in that the clamping mechanism comprises a first clamping component and a second clamping component, the first clamping component comprises a first horizontal lead screw supported on the mounting plate, and a left clamping jaw and a right clamping jaw which are sleeved on the first horizontal lead screw; the second clamping assembly comprises a second horizontal lead screw supported on the mounting plate, a left clamp body and a right clamp body, the second horizontal lead screw is sleeved with the left clamp body and the right clamp body, the mounting plate is provided with second horizontal slide ways corresponding to the left clamp body and the right clamp body, and the left clamping jaw and the right clamping jaw are used for clamping a first pipe section of the elbow joint. The left clamp body and the right clamp body are used for clamping a second pipe section of the elbow joint, and the first pipe section and the second pipe section are located on the two sides of an inflection point of the elbow joint respectively. According to the tool, the problem that a traditional tool is poor in positioning stability is solved, turning precision is guaranteed, product consistency is good, clamping is firm, and safety is good.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing parts of aviation engines, in particular to a special tool for machining elbow joints. Background Art

[0002] The elbow joint is a very important part in the aircraft engine accessories. The accuracy of the elbow joint will directly affect the oil system of the aircraft engine. The elbow joint required by the aircraft engine must not only be high-precision but also durable. In order to achieve the efficiency and stability of the elbow joint processing and ensure the accuracy of the size, it is necessary to use tooling to meet the accuracy problem in the elbow joint processing process.

[0003] When machining elbow joints, the traditional method is to first CNC mill out two blocks, place the parts in the blocks, connect and fix them with the blocks, and then clamp the blocks and parts on the lathe. The following problems exist during use: Due to the special shape of the elbow joints and unstable positioning, the turning size is unstable, the product consistency is poor, and there is a certain degree of danger. Utility Model Content

[0004] The utility model aims to provide a special tooling for turning elbow joints with reasonable structure and reliable use, so as to solve the problem of poor positioning stability of traditional tooling, ensure turning accuracy, good product consistency, and firm clamping and good safety.

[0005] The technical solution of the utility model is:

[0006] A special tool for machining an elbow joint, comprising a chassis, a mounting plate arranged on the chassis, and a clamping mechanism arranged on the mounting plate, the technical highlights of which are: the clamping mechanism comprises a first clamping assembly and a second clamping assembly, the first clamping assembly comprises a first horizontal lead screw supported on the mounting plate, a left clamp and a right clamp mounted on the first horizontal lead screw, a first horizontal slideway corresponding to the left clamp and the right clamp is provided on the mounting plate, the second clamping assembly comprises a second horizontal lead screw supported on the mounting plate, a left clamp body and a right clamp body mounted on the second horizontal lead screw, a second horizontal slideway corresponding to the left clamp body and the right clamp body is provided on the mounting plate, the left clamp and the right clamp body are used to clamp the first pipe section of the elbow joint, the left clamp body and the right clamp body are used to clamp the second pipe section of the elbow joint, the first pipe section and the second pipe section are respectively located on both sides of the inflection point of the elbow joint, and the symmetry planes of the left and right clamp bodies coincide with the symmetry planes of the left and right clamp bodies.

[0007] The above-mentioned special tooling for machining elbow joints, the left jaw is a fixed jaw, the right jaw is a movable jaw, the right jaw is provided with an internal thread cooperating with the first horizontal screw, the left jaw is provided with a through hole corresponding to the first horizontal screw, and the left jaw is fixed to the first horizontal slide.

[0008] The above-mentioned special tooling for turning elbow joints, the right pliers body is a fixed pliers body, the left pliers body is a movable pliers body, the left pliers body is provided with an internal thread cooperating with the second horizontal screw, the right pliers body is provided with a through hole corresponding to the second horizontal screw, and the right pliers body is fixed to the second horizontal slideway.

[0009] In the above-mentioned special tooling for machining elbow joints, two first limiting rings are provided in the middle section of the first horizontal lead screw, a first limiting fork-shaped piece is provided on the mounting plate, and a fork body of the first limiting fork-shaped piece is inserted between the two first limiting rings.

[0010] In the above-mentioned special tooling for machining elbow joints, two second limiting rings are provided in the middle section of the second horizontal lead screw, a second limiting fork-shaped piece is provided on the mounting plate, and a fork body of the second limiting fork-shaped piece is inserted between the two second limiting rings.

[0011] The above-mentioned special tooling for machining elbow joints has T-shaped positioning pins, cylindrical pins and hexagon socket head screws between the mounting plate and the chassis.

[0012] In the above-mentioned special tooling for machining elbow joints, a positioning platform is fixed at the center of the bottom surface of the chassis, and a cylindrical pin and a hexagon socket head screw are provided between the positioning platform and the chassis.

[0013] In the above-mentioned special tooling for machining elbow joints, the opposing surfaces of the right clamp body and the left clamp body are V-shaped clamping surfaces.

[0014] The beneficial effects of the utility model are:

[0015] The driving mechanism is used to drive the first horizontal lead screw and the second horizontal lead screw to rotate, the first horizontal lead screw drives the right clamp to move toward the left clamp, and the second horizontal lead screw drives the left clamp to move toward the right clamp, and finally clamps the first pipe section and the second pipe section of the elbow joint, overcoming the disadvantage of the special shape of the elbow joint and achieving the purpose of clamping the elbow joint. The problem of poor positioning stability of traditional tooling is solved, the turning accuracy is guaranteed, the product consistency is good, the qualified rate is high, and the production safety is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 Middle AA section view;

[0018] Figure 3 yes Figure 1 Middle BB section;

[0019] Figure 4 yes Figure 1 Mid-CC section;

[0020] Figure 5 yes Figure 4 Middle DD section;

[0021] Figure 6 yes Figure 1 Middle FF section view.

[0022] In the figure: 1. chassis, 2. hexagon socket head screw, 3. mounting plate, 4. first horizontal lead screw, 5. second horizontal lead screw, 6. elbow joint, 7. left clamp body, 8. right clamp body, 9. left clamp jaw, 10. right clamp jaw, 11. positioning table, 12. first limiting fork-shaped piece, 13. first limiting ring, 14. cylindrical pin, 15. second limiting ring, 16. second limiting fork-shaped piece, 17. hexagon socket head screw, 18. cylindrical pin, 19. T-shaped positioning pin. DETAILED DESCRIPTION

[0023] The utility model is described in detail according to the accompanying drawings of the specification.

[0024] like Figure 1 to Figure 6 As shown, the special tooling for machining the elbow joint comprises a chassis 1 , a mounting plate 3 arranged on the chassis 1 , and a clamping mechanism arranged on the mounting plate 3 .

[0025] Wherein, the clamping mechanism includes a first clamping assembly and a second clamping assembly. The first clamping assembly includes a first horizontal lead screw 4 supported on the mounting plate 3, a left clamping jaw 9 and a right clamping jaw 10 sleeved on the first horizontal lead screw 4. The mounting plate 3 is provided with a first horizontal slideway corresponding to the left clamping jaw 9 and the right clamping jaw 10. The second clamping assembly includes a second horizontal lead screw 5 supported on the mounting plate 3, a left clamp body 7 and a right clamp body 8 sleeved on the second horizontal lead screw 5. The mounting plate 3 is provided with a second horizontal slideway corresponding to the left clamp body 7 and the right clamp body 8. The left clamping jaw 9 and the right clamping jaw 10 are used to clamp the first pipe section of the elbow joint 6, and the left clamp body 7 and the right clamp body 8 are used to clamp the second pipe section of the elbow joint 6. The first pipe section and the second pipe section are respectively located on both sides of the inflection point of the elbow joint 6. The symmetry planes of the left and right clamp bodies coincide with the symmetry planes of the left and right clamping jaws.

[0026] In this embodiment, the left clamp 9 is a fixed clamp, the right clamp 10 is a movable clamp, the right clamp 10 is provided with an internal thread that matches the first horizontal lead screw 4, the left clamp 9 is provided with a through hole corresponding to the first horizontal lead screw 4, and the left clamp 9 is fixed to the first horizontal slide. The right clamp body 8 is a fixed clamp body, the left clamp body 7 is a movable clamp body, and the opposite surfaces of the right clamp body 8 and the left clamp body 7 are V-shaped clamping surfaces. The left clamp body 7 is provided with an internal thread that matches the second horizontal lead screw 5, the right clamp body 8 is provided with a through hole corresponding to the second horizontal lead screw 5, and the right clamp body 8 is fixed to the second horizontal slide.

[0027] The middle section of the first horizontal lead screw 4 is provided with two first limit rings 13, and the mounting plate 3 is provided with a first limit fork 12, and the fork body of the first limit fork 12 is inserted between the two first limit rings 13. The middle section of the second horizontal lead screw 5 is provided with two second limit rings 15, and the mounting plate 3 is provided with a second limit fork 16, and the fork body of the second limit fork 16 is inserted between the two second limit rings 15. A T-shaped positioning pin 19, a cylindrical pin 14 and a hexagon socket head screw 2 are provided between the mounting plate 3 and the chassis 1. A positioning platform 11 is fixed at the center of the bottom surface of the chassis 1, and a cylindrical pin 18 and a hexagon socket head screw 17 are provided between the positioning platform 11 and the chassis 1.

[0028] Working principle:

[0029] 1. When in use, place the elbow joint 6 to be processed between the left clamp 9 and the right clamp body 8;

[0030] 2. Start the driving mechanism to drive the first horizontal screw 4 and the second horizontal screw 5 to rotate. The first horizontal screw 4 drives the right clamp 10 to move toward the left clamp 9. The second horizontal screw 5 drives the left clamp body 7 to move toward the right clamp body 8, and finally clamps the first pipe section and the second pipe section of the elbow joint 6. The interface of the second pipe section faces upward and is higher than the clamping parts of the left and right clamp bodies for easy processing.

[0031] 4. Fix the device on the CNC lathe, align it and then turn the interface.

[0032] 5. After completing the turning of one interface, re-clamp it and turn another interface.

[0033] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A special tool for machining elbow joints, comprising a chassis, a mounting plate arranged on the chassis, and a clamping mechanism arranged on the mounting plate, characterized in that: The clamping mechanism includes a first clamping assembly and a second clamping assembly, the first clamping assembly includes a first horizontal screw supported on a mounting plate, a left clamp and a right clamp mounted on the first horizontal screw, a first horizontal slide corresponding to the left clamp and the right clamp is provided on the mounting plate, the second clamping assembly includes a second horizontal screw supported on the mounting plate, a left clamp body and a right clamp body mounted on the second horizontal screw, a second horizontal slide corresponding to the left clamp body and the right clamp body is provided on the mounting plate, the left clamp and the right clamp body are used to clamp the first pipe section of the elbow joint, the left clamp body and the right clamp body are used to clamp the second pipe section of the elbow joint, the first pipe section and the second pipe section are respectively located on both sides of the inflection point of the elbow joint, and the symmetry planes of the left and right clamp bodies coincide with the symmetry planes of the left and right clamp bodies.

2. The special tooling for machining elbow joints according to claim 1, characterized in that: The left clamp is a fixed clamp, the right clamp is a movable clamp, the right clamp is provided with an internal thread matched with the first horizontal lead screw, the left clamp is provided with a through hole corresponding to the first horizontal lead screw, and the left clamp is fixed to the first horizontal slideway.

3. The special tooling for machining elbow joints according to claim 1 is characterized in that: The right caliper body is a fixed caliper body, the left caliper body is a movable caliper body, the left caliper body is provided with an internal thread matched with the second horizontal lead screw, the right caliper body is provided with a through hole corresponding to the second horizontal lead screw, and the right caliper body is fixed to the second horizontal slideway.

4. The special tooling for machining elbow joints according to claim 1, characterized in that: Two first limiting rings are arranged in the middle section of the first horizontal lead screw, a first limiting fork-shaped piece is arranged on the mounting plate, and a fork body of the first limiting fork-shaped piece is inserted between the two first limiting rings.

5. The special tooling for machining elbow joints according to claim 1, characterized in that: Two second limiting rings are arranged in the middle section of the second horizontal lead screw, a second limiting fork-shaped piece is arranged on the mounting plate, and a fork body of the second limiting fork-shaped piece is inserted between the two second limiting rings.

6. The special tooling for machining elbow joints according to claim 1, characterized in that: A T-shaped positioning pin, a cylindrical pin and a hexagon socket head screw are arranged between the mounting plate and the chassis.

7. The special tooling for machining elbow joints according to claim 1, characterized in that: A positioning platform is fixed at the center of the bottom surface of the chassis, and a cylindrical pin and a hexagon socket head screw are arranged between the positioning platform and the chassis.

8. The special tooling for machining elbow joints according to claim 1, characterized in that: The opposing surfaces of the right clamp body and the left clamp body are V-shaped clamping surfaces.

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