A tool for machining an internal thread in an engine cylinder block bore

Abstract

The utility model discloses an engine cylinder body hole internal thread processing's frock, it is in -use process to solve current engine cylinder body hole internal thread processing's frock and not needing step by step to engine cylinder body positioning and limiting, thereby increased the labor intensity of operating personnel when installing and fixing engine cylinder body, and the firmness of engine cylinder body after installation and fixation is relatively poor technical problem, its structure includes frock base, the upper surface fixed connection of frock base both sides has the supporting plate, the upper fixed connection of supporting plate has the hydraulic pressure rod, the output fixed connection of hydraulic pressure rod has the positioning mechanism, is positioned for letting engine cylinder body automatic centering on frock, be installed on the positioning mechanism and have the limiting mechanism for the limiting of engine cylinder body. The utility model can make the contact surface of positioning plate can be fully contacted with the outer surface of engine cylinder body, so as to be favorable to the firmness of engine cylinder body when installing and fixing.

Description

Technical Field

[0001] This utility model relates to the field of engine cylinder block machining technology, specifically a tooling for machining internal threads in engine cylinder block holes. Background Technology

[0002] The engine cylinder block is a key component of an internal combustion engine. It forms the engine's main structure, supporting other major components and providing operating space. Cylinder blocks are typically made of aluminum alloy or cast iron, possessing sufficient strength and rigidity to withstand the high pressure and high temperature environment inside the engine. Drilling is required during the machining of the engine cylinder block to facilitate the subsequent installation and use of components such as piston rods. This drilling process mainly involves machining holes for cylinder bores, oil passages, and cooling water passages. Because the cylinder block needs to withstand the high temperature and pressure environment, the dimensions, location, and surface quality of these holes require extremely high precision. Drilling is usually performed using machine tools to ensure the accuracy and quality of the holes, thereby guaranteeing the normal operation and durability of the engine.

[0003] In the process of developing this utility model, the inventor discovered that at least the following problems remain unresolved in the existing technology: During use, traditional tooling for machining the internal threads of engine cylinder blocks does not require step-by-step positioning and limiting of the engine cylinder block, thus increasing the labor intensity of operators when installing and fixing the engine cylinder block, and resulting in poor stability after installation. Therefore, a new technical solution is needed to address these issues. Summary of the Invention

[0004] The purpose of this utility model is to provide a tooling for machining internal threads in engine cylinder blocks, so as to solve the technical problem that the current tooling for machining internal threads in engine cylinder blocks does not require step-by-step positioning and limiting of the engine cylinder block during use, thereby increasing the labor intensity of operators when installing and fixing the engine cylinder block, and the engine cylinder block has poor stability after installation and fixing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for machining the internal thread of an engine cylinder block, comprising a tooling base, a support plate fixedly connected to the upper surfaces of both sides of the tooling base, a hydraulic rod fixedly connected to the upper surface of the support plate, and a positioning mechanism fixedly connected to the output end of the hydraulic rod, for automatically centering and positioning the engine cylinder block on the tooling. The positioning mechanism is equipped with a limiting mechanism for limiting the position of the engine cylinder block; A synchronization mechanism is installed between the limiting mechanism and the positioning mechanism, which allows the limiting mechanism to move longitudinally as the positioning mechanism moves laterally, thereby adjusting the height of the limiting mechanism.

[0006] In a preferred embodiment of the present invention, the positioning mechanism includes a mounting plate, a groove is provided inside one side of the mounting plate, countersunk holes are provided at both ends of the groove, a cylindrical member is rotatably connected inside the groove, threaded holes are provided at both ends of the cylindrical member, a positioning plate is installed on the other side of the cylindrical member, and a mounting hole is provided at the center of the positioning plate.

[0007] In a preferred embodiment of this utility model, a countersunk bolt is installed inside the countersunk hole, the threaded section of the countersunk bolt is threadedly connected to the inside of the threaded hole, and the other end of the countersunk bolt is rotatably connected to the inside of the countersunk hole. A fixing bolt is installed inside the mounting hole, the threaded section of the fixing bolt is threadedly connected to the inside of the cylindrical component, and 4 / 5 of the cylindrical component is located inside the groove.

[0008] In a preferred embodiment of this utility model, the limiting mechanism includes a crossbeam plate, a bidirectional threaded screw is rotatably connected to the bottom of the crossbeam plate, a knob is fixedly connected to one end of the bidirectional threaded screw, movable blocks are symmetrically installed at both ends of the bidirectional threaded screw, and a carrier plate is fixedly connected to the bottom of the movable blocks.

[0009] In a preferred embodiment of the present invention, the bottom of the carrier plate is provided with an internal groove, and a limiting plate is rotatably connected inside the internal groove. The upper half of the limiting plate is cylindrical and the lower half is frustum-shaped.

[0010] In a preferred embodiment of this utility model, through slots are provided on both sides of the built-in groove and at the center of the upper half of the limiting plate. Limiting pins are inserted inside the through slots, and shielding rings are fixedly installed at both ends of the limiting pins.

[0011] In a preferred embodiment of the present invention, the synchronization mechanism includes a concave toothed plate, one end of which is fixedly connected to one side of the support plate. A first gear meshes with the teeth of the concave toothed plate, and both ends of the first gear are rotatably connected to the opening at one end of the crossbeam plate.

[0012] In a preferred embodiment of the present invention, a first bevel gear is fixedly connected to one side of the first gear, a second bevel gear is engaged with the toothed end of the first bevel gear, a drive rod is fixedly connected to one end of the second bevel gear, and a second gear is fixedly connected to the other end of the drive rod.

[0013] In a preferred embodiment of this utility model, the toothed end of the second gear meshes with the toothed end of the third gear, the center of the third gear is fixedly connected to one end of the threaded rod, and the other end of the threaded rod is rotatably connected to the inside of the top of the positioning mechanism and is threadedly connected to one end of the crossbeam plate.

[0014] In a preferred embodiment of this utility model, a guide rod is installed on one side of the threaded rod, one end of the guide rod is fixedly connected to the top of the positioning mechanism, and the outer surface of the guide rod is slidably connected to the inside of one end of the crossbeam plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. When the engine cylinder block is placed on the tooling base, the two hydraulic rods will operate simultaneously, causing the two positioning mechanisms to move towards the middle position of the tooling base. At this time, the positioning mechanism will push the engine cylinder block to move, thereby positioning the engine cylinder block. During this process, the positioning plate will contact the outer surface of the engine cylinder block. When the outer surface of the engine cylinder block is uneven, the positioning plate will drive the cylindrical part to rotate within a small range inside the groove, so that the contact surface of the positioning plate can fully contact the outer surface of the engine cylinder block, thereby improving the firmness of the engine cylinder block during installation and fixation.

[0016] 2. When the hydraulic rod drives the positioning mechanism to move, the concave toothed plate will drive the first gear to rotate. At this time, the first gear will drive the first bevel gear to rotate, and then the first bevel gear will drive the second bevel gear to rotate. Then the second bevel gear will drive the second gear to rotate through the driving rod, and then the second gear will drive the third gear to rotate. Then the third gear will drive the threaded rod to rotate, so that the threaded rod will drive the crossbeam plate to rise and fall, thereby achieving automatic adjustment of the position of the limiting mechanism, thus realizing automatic positioning and limiting of engine cylinder blocks of different sizes. When the outer surface of the engine cylinder block is uneven, the limiting plate will rotate slightly inside the built-in groove, so that the contact surface of the limiting plate can fully contact the outer surface of the engine cylinder block, thereby further improving the firmness of the engine cylinder block during installation. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is the left view of the present invention; Figure 2 This is the right view of the present invention; Figure 3 This is an exploded view of the positioning mechanism of this utility model; Figure 4 This is an exploded view of the limiting mechanism of this utility model; Figure 5 This is a partially enlarged view of the present invention; In the diagram: 1. Tooling base; 11. Support plate; 12. Hydraulic rod; 13. Mounting plate; 14. Groove; 15. Countersunk hole; 16. Cylindrical part; 17. Threaded hole; 18. Positioning plate; 19. Mounting hole; 2. Countersunk bolt; 22. Fixing bolt; 23. Crossbeam plate; 24. Double-ended threaded screw; 25. Knob; 26. Moving block; 27. Carrier plate; 28. Internal groove; 29. ​​Limiting plate; 3. Through slot; 31. Limiting pin; 32. Covering ring; 33. Concave toothed plate; 34. First gear; 35. First bevel gear; 36. Second bevel gear; 37. Drive rod; 38. Second gear; 39. Third gear; 4. Threaded rod; 41. Guide rod. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example 1: A tooling for machining internal threads in engine cylinder block bores, see [reference needed]. Figures 1 to 5The fixture includes a tooling base 1, on which support plates 11 are fixedly connected to the upper surfaces of both sides. A hydraulic rod 12 is fixedly connected to the upper surface of the support plate 11. A positioning mechanism is fixedly connected to the output end of the hydraulic rod 12 for automatically centering the engine cylinder block on the fixture. The positioning mechanism includes a mounting plate 13. A groove 14 is formed inside one side of the mounting plate 13. Countersunk holes 15 are formed at both ends of the groove 14. A cylindrical member 16 is rotatably connected inside the groove 14. Threaded holes 17 are formed at both ends of the cylindrical member 16. A positioning plate 18 is mounted on the other side of the cylindrical member 16. A mounting hole 19 is formed at the center of the positioning plate 18. A countersunk bolt 2 is installed inside the countersunk hole 15. The threaded section of the countersunk bolt 2 is threaded into the threaded hole 17. The other end of the countersunk bolt 2 is rotatably connected into the countersunk hole 15. The mounting hole 19 contains a fixing bolt 22, the threaded section of which is threaded into the cylindrical member 16. 4 / 5 of the cylindrical member 16 is located inside the groove 14. When the engine cylinder block is placed on the tooling base 1, two hydraulic rods 12 operate simultaneously, causing two positioning mechanisms to move towards the center of the tooling base 1. The positioning mechanisms then push the engine cylinder block to move, thus positioning it. During this process, the positioning plate 18 contacts the outer surface of the engine cylinder block. When the outer surface of the engine cylinder block is uneven, the positioning plate 18 causes the cylindrical member 16 to rotate slightly within the groove 14, allowing the contact surface of the positioning plate 18 to fully contact the outer surface of the engine cylinder block, thereby improving the stability of the engine cylinder block during installation. It is worth noting that, see Figures 1 to 4The positioning mechanism is equipped with a limiting mechanism for limiting the movement of the engine cylinder block. The limiting mechanism includes a crossbeam plate 23, with a bidirectional threaded screw 24 rotatably connected to the bottom of the crossbeam plate 23. A knob 25 is fixedly connected to one end of the bidirectional threaded screw 24. Moving blocks 26 are symmetrically installed at both ends of the bidirectional threaded screw 24. A carrier plate 27 is fixedly connected to the bottom of the moving blocks 26. An internal groove 28 is formed at the bottom of the carrier plate 27. A limiting plate 29 is rotatably connected inside the internal groove 28. The upper half of the limiting plate 29 is cylindrical, and the lower half is frustum-shaped. The internal groove 28... Through slots 3 are provided on both sides of 8 and at the center of the upper half of the limiting plate 29. Limiting pins 31 are inserted inside the through slots 3. The two ends of the limiting pins 31 are fixedly installed with shielding rings 32. When the engine cylinder block is fixed, the distance between the two limiting plates 29 is first adjusted according to the length of the engine cylinder block. Then, the knob 25 drives the double-threaded screw 24 to rotate. The double-threaded screw 24 will drive the two moving blocks 26 to move relative to each other or towards each other in the crossbeam plate 23, thereby adjusting the distance between the two limiting plates 29, so as to limit the engine cylinder blocks of different sizes. It is worth mentioning that, see Figures 1 to 5A synchronization mechanism is installed between the limiting mechanism and the positioning mechanism, enabling the limiting mechanism to move longitudinally as the positioning mechanism moves laterally, thereby adjusting the height of the limiting mechanism. The synchronization mechanism includes a concave toothed plate 33, one end of which is fixedly connected to one side of the support plate 11. A first gear 34 meshes with the toothed portion of the concave toothed plate 33. The two ends of the first gear 34 are rotatably connected to the opening at one end of the crossbeam plate 23. A first bevel gear 35 is fixedly connected to one side of the first gear 34. A second bevel gear 36 meshes with the toothed end of the first bevel gear 35. A driving rod 37 is fixedly connected to one end of the second bevel gear 36. A second gear 38 is fixedly connected to the other end of the driving rod 37. The toothed end of the second gear 38 meshes with the toothed end of a third gear 39. The center of the third gear 39 is fixedly connected to one end of a threaded rod 4. The other end of the threaded rod 4 is rotatably connected to the inside of the top of the positioning mechanism and is connected to the crossbeam plate 23. The plate 23 has an internal threaded connection at one end. A guide rod 41 is installed on one side of the threaded rod 4. One end of the guide rod 41 is fixedly connected to the top of the positioning mechanism. The outer surface of the guide rod 41 is slidably connected to the inside of one end of the crossbeam plate 23. When the hydraulic rod 12 drives the positioning mechanism to move, the concave toothed plate 33 drives the first gear 34 to rotate. At this time, the first gear 34 drives the first bevel gear 35 to rotate. Then, the first bevel gear 35 drives the second bevel gear 36 to rotate. Then, the second bevel gear 36 drives the second gear 38 to rotate through the driving rod 37. Then, the second gear 38 drives the third gear 39 to rotate. Then, the third gear 39 drives the threaded rod 4 to rotate, so that the threaded rod 4 drives the crossbeam plate 23 to rise and fall, thereby achieving automatic adjustment of the position of the limiting mechanism. This enables automatic positioning and limiting of engine cylinder blocks of different sizes, further improving the stability of the engine cylinder block during internal thread processing. When the outer surface of the engine cylinder block is uneven, the limiting plate 29 will rotate within a small range inside the built-in groove 28, so that the contact surface of the limiting plate 29 can fully contact the outer surface of the engine cylinder block, thereby further improving the firmness of the engine cylinder block during installation.

[0021] It should be noted that the drive rod 37 is rotatably connected inside the connecting plate, and one end of the connecting plate is fixedly connected to one side of the support plate 11, and is above the concave toothed plate 33.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tooling for machining internal threads in an engine cylinder block bore, comprising a tooling base (1), wherein support plates (11) are fixedly connected to the upper surfaces on both sides of the tooling base (1), characterized in that: A hydraulic rod (12) is fixedly connected to the upper part of the support plate (11), and a positioning mechanism is fixedly connected to the output end of the hydraulic rod (12) for automatically centering the engine cylinder block on the tooling. The positioning mechanism is equipped with a limiting mechanism for limiting the position of the engine cylinder block; A synchronization mechanism is installed between the limiting mechanism and the positioning mechanism, which allows the limiting mechanism to move longitudinally as the positioning mechanism moves laterally, thereby adjusting the height of the limiting mechanism.

2. The tooling for machining internal threads in an engine cylinder block bore according to claim 1, characterized in that: The positioning mechanism includes a mounting plate (13), a groove (14) is provided inside one side of the mounting plate (13), countersunk holes (15) are provided at both ends of the groove (14), a cylindrical member (16) is rotatably connected inside the groove (14), threaded holes (17) are provided at both ends of the cylindrical member (16), a positioning plate (18) is installed on the other side of the cylindrical member (16), and a mounting hole (19) is provided at the center of the positioning plate (18).

3. The tooling for machining internal threads in an engine cylinder block bore according to claim 2, characterized in that: A countersunk bolt (2) is installed inside the countersunk hole (15). The threaded section of the countersunk bolt (2) is threaded into the threaded hole (17). The other end of the countersunk bolt (2) is rotatably connected to the inside of the countersunk hole (15). A fixing bolt (22) is installed inside the mounting hole (19). The threaded section of the fixing bolt (22) is threaded into the inside of the cylindrical part (16). 4 / 5 of the cylindrical part (16) is located inside the groove (14).

4. The tooling for machining internal threads in an engine cylinder block bore according to claim 1, characterized in that: The limiting mechanism includes a crossbeam plate (23), and a bidirectional threaded screw (24) is rotatably connected to the bottom of the crossbeam plate (23). A knob (25) is fixedly connected to one end of the bidirectional threaded screw (24), and moving blocks (26) are symmetrically installed at both ends of the bidirectional threaded screw (24). A carrier plate (27) is fixedly connected to the bottom of the moving block (26).

5. The tooling for machining internal threads in an engine cylinder block bore according to claim 4, characterized in that: The bottom of the carrier plate (27) is provided with an internal groove (28), and a limiting plate (29) is rotatably connected inside the internal groove (28). The upper half of the limiting plate (29) is cylindrical and the lower half is frustum-shaped.

6. The tooling for machining internal threads in an engine cylinder block bore according to claim 5, characterized in that: Through slots (3) are provided on both sides of the built-in slot (28) and at the center of the upper half of the limiting plate (29). A limiting pin (31) is inserted inside the through slot (3), and a shielding ring (32) is fixedly installed at both ends of the limiting pin (31).

7. The tooling for machining internal threads in an engine cylinder block bore according to claim 4, characterized in that: The synchronization mechanism includes a concave toothed plate (33), one end of which is fixedly connected to one side of the support plate (11). A first gear (34) is engaged at the toothed part of the concave toothed plate (33), and both ends of the first gear (34) are rotatably connected to the opening at one end of the crossbeam plate (23).

8. The tooling for machining internal threads in an engine cylinder block bore according to claim 7, characterized in that: A first bevel gear (35) is fixedly connected to one side of the first gear (34), and a second bevel gear (36) meshes with the toothed end of the first bevel gear (35). A drive rod (37) is fixedly connected to one end of the second bevel gear (36), and a second gear (38) is fixedly connected to the other end of the drive rod (37).

9. The tooling for machining internal threads in an engine cylinder block bore according to claim 8, characterized in that: The toothed end of the second gear (38) meshes with the toothed end of the third gear (39). The center of the third gear (39) is fixedly connected to one end of the threaded rod (4). The other end of the threaded rod (4) is rotatably connected to the inside of the top of the positioning mechanism and is threadedly connected to one end of the crossbeam plate (23).

10. The tooling for machining internal threads in an engine cylinder block bore according to claim 9, characterized in that: A guide rod (41) is installed on one side of the threaded rod (4). One end of the guide rod (41) is fixedly connected to the top of the positioning mechanism. The outer surface of the guide rod (41) is slidably connected to the inside of one end of the crossbeam plate (23).

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