A turbine housing forming tool

Abstract

This utility model discloses a turbine housing forming tool, specifically relating to the field of tool technology. It includes a tool body for forming turbine housings, an externally connected snap-fit ​​bracket, an end connector block for fixing an external tool holder at one end of the snap-fit ​​bracket, and an internal fixing cavity for inserting the tool body. A contact mechanism is provided between the inner wall of the fixing cavity and one end of the tool body. Four protrusions are arranged in a ring at equal intervals on the outer wall of the tool body. This utility model, through the contact mechanism, compresses a spring when the positioning pin is inserted into the positioning groove at the end of the tool body, generating a thrust that causes the tool body to move outward. Furthermore, by providing four screw-in screws, a locking effect can be achieved in multiple positions, preventing the tool body from becoming loose due to a single screw loosening.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and more specifically, to a tool for forming turbine housings. Background Technology

[0002] As a core component of modern internal combustion engines, the turbocharger's performance directly determines the engine's power output, fuel economy, and emissions levels. The turbine housing, a key structural component of the turbocharger, undertakes core functions such as forming the turbine working chamber, guiding the flow of high-temperature, high-pressure gas, and supporting the turbine shaft and rotating components. Its machining quality directly affects the turbocharger's thermal efficiency, durability, and reliability, thus determining the vehicle's power performance and environmental performance. Turbine housing machining tools are crucial for achieving cutting complex curved surfaces, high-precision geometric tolerances, and high-temperature resistant materials.

[0003] A search revealed Chinese patent CN219648724U, which discloses a turbine housing forming tool, belonging to the field of tool technology. This turbine housing forming tool facilitates the replacement of the first and second tools, making it convenient and quick, and improving work efficiency. The turbine housing forming tool designed above uses a dual-tool combination and subsequent switching operation; the entire tool can be considered as a single unit, meaning both ends of the tool can be used for cutting. While this design facilitates tool replacement, there are some issues with the spring design in actual use. The spring expands and contracts to a certain extent due to vibrations generated during tool processing. However, if the spring is continuously compressed, the retaining pin is prone to disengagement, resulting in poor tool stability. Furthermore, the single screw locking structure, if the retaining pin disengages, causes the entire tool to rotate around the smooth surface of the screw, affecting usability. The stability of the individual screw is also not ideal; loosening of the screw due to high-frequency vibration can also cause the tool to fall off. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a turbine housing forming tool.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turbine housing forming tool, comprising a tool body for forming a turbine housing, a snap-fit ​​bracket connected to the outside of the tool body, an end connecting block for fixing an external tool holder at one end of the snap-fit ​​bracket, and a fixing cavity for inserting the tool body inside the snap-fit ​​bracket, a top contact mechanism between the inner wall of the fixing cavity and one end of the tool body, four protrusions arranged in an annular pattern on the outer wall of the tool body, a limiting groove for sliding into each protrusion on the inner wall of the fixing cavity, and a screw connected to the outer wall of the snap-fit ​​bracket outside each protrusion.

[0006] As a further improvement to the technical solution of this utility model, the top contact mechanism includes a positioning post fixedly connected to the inner wall of the middle part of the fixed cavity. One end of the positioning post is inserted into the end of the tool body, and a collar is sleeved on the outside of the positioning post. A spring is sleeved on the outside of the positioning post between the collar and the inner wall of the end of the fixed cavity.

[0007] As a further improvement to the technical solution of this utility model, the two ends of the tool body are respectively provided with positioning grooves for the insertion of the positioning pin ends, and the inner diameter of the vertical cross section of the positioning groove is larger than the outer diameter of the vertical cross section of the positioning pin.

[0008] As a further improvement to the technical solution of this utility model, the inner diameter of the vertical cross-section of the collar is larger than the outer diameter of the vertical cross-section of the positioning post.

[0009] As a further improvement to the technical solution of this utility model, one end of the screw extends through the protrusion to the outer wall of the tool body.

[0010] As a further improvement to the technical solution of this utility model, the outer wall of the tool body is provided with a threaded hole with a matching thread structure at the connection point of the screw.

[0011] As a further improvement to the technical solution of this utility model, the inside of the protrusion is provided with a through hole for the screw to pass through, and the outer wall of the tool body is provided with a groove for the screw end to be inserted.

[0012] The beneficial effects of this utility model are as follows: By setting a top contact mechanism, when the positioning pin is inserted into the positioning groove at the end of the tool body, one end of the tool body will generate a pushing force on the collar and spring outside the positioning pin, thereby compressing the spring. When the spring is compressed, the positioning pin is always inserted into the positioning groove, and the reaction force generates a pushing force that makes the tool body move outward. Furthermore, by setting four screw-in screws, one end of the screw is inserted into the outer wall of the tool body, thereby forming a locking effect in multiple positions. Compared with the locking of a single screw, the locking effect of multiple screws can achieve multi-position locking, avoiding the problem of tool body installation loosening due to the loosening of a single screw. Combined with the pushing force generated by the top contact mechanism, the screw is subjected to a vertical force, thereby maintaining a more stable state. This facilitates the switching operation of the tool heads at both ends of the tool body and ensures stable use. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention.

[0014] Figure 2 This is the front view of the present invention.

[0015] Figure 3 This is a side view of the present invention.

[0016] Figure 4 This utility model Figure 1 Enlarged view of part A in the middle.

[0017] Figure 5 This is a schematic diagram of the structure of the snap-fit ​​bracket in this utility model. The reference numerals are: 1. Tool body; 2. Snap-fit ​​bracket; 3. End connecting block; 4. Fixing cavity; 5. Positioning post; 6. Collar; 7. Spring; 8. Positioning groove; 9. Protrusion; 10. Limiting groove; 11. Screw; 12. Through hole; 13. Screw hole; 14. Groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] As attached Figure 1-5The turbine housing forming tool shown includes a tool body 1 for forming the turbine housing. The tool body 1 is externally connected to a retaining frame 2. One end of the retaining frame 2 is provided with an end connecting block 3 for fixed connection to an external tool holder. The retaining frame 2 is internally provided with a fixing cavity 4 for inserting the tool body 1. A top contact mechanism is provided between the inner wall of the end of the fixing cavity 4 and one end of the tool body 1. The outer wall of the tool body 1 is provided with four protrusions 9 arranged in a ring at equal intervals. The inner wall of the fixing cavity 4 is provided with a limiting groove 10 for each protrusion 9 to slide into. The outer wall of the retaining frame 2 is connected to a screw 11 on the outside of each protrusion 9.

[0020] As attached Figure 1 and attached Figure 4 As shown, the top contact mechanism includes a positioning post 5 fixedly connected to the inner wall of the middle part of the fixed cavity 4. One end of the positioning post 5 is inserted into the end of the tool body 1, and a collar 6 is sleeved on the outside of the positioning post 5. A spring 7 is sleeved between the collar 6 and the inner wall of the end of the fixed cavity 4. The two ends of the tool body 1 are respectively provided with positioning grooves 8 for the insertion of the end of the positioning post 5. The inner diameter of the vertical section of the positioning groove 8 is larger than the outer diameter of the vertical section of the positioning post 5, and the inner diameter of the vertical section of the collar 6 is larger than the outer diameter of the vertical section of the positioning post 5. The top contact mechanism is designed to generate a pushing force on the collar 6 and spring 7 outside the positioning post 5 when one end of the tool body 1 is inserted during use, thereby compressing the spring and using the reaction force to generate a pushing force so that the tool body 1 has a force to move outward.

[0021] As attached Figure 1 and attached Figure 5 As shown, one end of the screw 11 extends through the protrusion 9 to the outer wall of the tool body 1. The outer wall of the tool body 1 is provided with a screw hole 13 with a matching thread structure at the connection point of the screw 11. The protrusion 9 is provided with a through hole 12 for the screw 11 to pass through. The outer wall of the tool body 1 is provided with a groove 14 for the end of the screw 11 to be inserted, which facilitates the connection of the screw 11 and thus creates a locking effect on the tool body 1.

[0022] Working principle: This utility model designs a turbine housing forming tool, the specific structure of which is shown in the attached instruction manual. Figure 1-5As shown, in this technical solution, when the retaining bracket 2, which is located outside the tool body 1, is assembled with the tool body 1, one end of the tool body 1 extends into the interior of the retaining bracket 2. The protrusion 9 on the outer wall of the tool body 1 aligns with the limiting groove on the inner wall of the retaining bracket 2, pushing it to the depth position of the fixing cavity 4. Through the provision of a top-contact mechanism, when the positioning pin 5 is inserted into the positioning groove 8 at the end of the tool body 1, one end of the tool body 1 generates a thrust on the collar 6 and spring 7 outside the positioning pin 5, thereby compressing the spring 7. The reaction force then generates another thrust to push the tool body 1... Body 1 has an outward force, and then four screws 11 are screwed on, so that one end of screw 11 is inserted into the outer wall of the tool body 1, thereby forming a locking effect in multiple positions. Compared with the locking of a single screw, the locking effect of multiple screws can achieve multi-position locking, avoiding the problem of loose installation of the tool body 1 due to the loosening of a single screw. With the push force generated by the top contact mechanism, the screw 11 is subjected to a vertical force, thereby maintaining a more stable state. This facilitates the switching operation of the cutting heads at both ends of the tool body and ensures stable use.

[0023] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turbine housing forming tool, comprising a tool body (1) for forming turbine housings, characterized in that: The tool body (1) is externally connected to a snap-fit ​​bracket (2). One end of the snap-fit ​​bracket (2) is provided with an end connector (3) for fixed connection to an external tool holder. The snap-fit ​​bracket (2) is internally provided with a fixing cavity (4) for insertion of the tool body (1). A top contact mechanism is provided between the inner wall of the fixing cavity (4) and one end of the tool body (1). The outer wall of the tool body (1) is provided with four protrusions (9) arranged in a ring at equal intervals. The inner wall of the fixing cavity (4) is provided with a limiting groove (10) for each protrusion (9) to slide into. The outer wall of the snap-fit ​​bracket (2) is connected with a screw (11) on the outside of each protrusion (9).

2. The turbine housing forming tool according to claim 1, characterized in that: The top contact mechanism includes a positioning post (5) fixedly connected to the inner wall of the middle part of the fixed cavity (4). One end of the positioning post (5) is inserted into the end of the tool body (1), and a collar (6) is sleeved on the outside of the positioning post (5). A spring (7) is sleeved on the outside of the positioning post (5) between the collar (6) and the inner wall of the end of the fixed cavity (4).

3. The turbine housing forming tool according to claim 2, characterized in that: The two ends of the tool body (1) are respectively provided with positioning grooves (8) for the insertion of the end of the positioning post (5). The inner diameter of the vertical section of the positioning groove (8) is larger than the outer diameter of the vertical section of the positioning post (5).

4. The turbine housing forming tool according to claim 2, characterized in that: The inner diameter of the vertical section of the collar (6) is greater than the outer diameter of the vertical section of the positioning post (5).

5. The turbine housing forming tool according to claim 1, characterized in that: One end of the screw (11) extends through the protrusion (9) to the outer wall of the tool body (1).

6. The turbine housing forming tool according to claim 5, characterized in that: The outer wall of the tool body (1) is provided with a threaded hole (13) corresponding to the connection of the screw (11).

7. The turbine housing forming tool according to claim 5, characterized in that: The protrusion (9) has a through hole (12) for the screw (11) to pass through, and the outer wall of the tool body (1) has a groove (14) for the end of the screw (11) to be inserted.

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