Positioning tool for valve seat ring machining

Abstract

The utility model relates to the field of valve seat ring positioning devices, in particular to a positioning tool for valve seat ring machining, and aims to solve the technical problems that clamping devices such as positioning pins are adopted as a positioning mode of a valve seat ring, and the valve seat ring is inconvenient to quickly position. According to the technical scheme, the positioning tool for valve seat ring machining comprises a foot stool, a workbench, a through groove, a rotating assembly, a clamping assembly and a limiting assembly; through cooperative work of the rotating assembly and the clamping assembly, the valve seat ring can flexibly rotate so as to meet the machining requirement, the valve seat ring can be stably clamped in the machining process and prevented from shaking, meanwhile, the elastic limiting effect of the limiting assembly ensures that the valve seat ring is firmly fixed to the rotating disc, and the machining efficiency is improved. And displacement in the rotating process is effectively avoided, so that smooth proceeding of the machining process is guaranteed, and the problem that the valve seat ring is inconvenient to position rapidly due to the fact that clamping devices such as positioning pins are adopted in the positioning mode of the valve seat ring is solved.

Description

Technical Field

[0001] The utility model relates to the field of valve seat ring positioning devices, in particular to a positioning tool for valve seat ring processing. Background Art

[0002] The function of the valve seat ring is to seal the valve and withstand high-speed impact. The valve seat ring contacts the valve head to ensure the sealing of the cylinder and dissipate heat for the valve. During the operation of the engine, the valve seat ring plays a key sealing role to prevent gas leakage from the gap between the valve and the seat ring, ensuring the normal operation of the engine. At the same time, since the valve will be subjected to high-speed impact during operation, the valve seat ring must also withstand these impact forces to maintain the stability and integrity of the structure.

[0003] Positioning operation is an indispensable part in the processing of valve seat rings. The common positioning method at present is mainly manual operation through clamping devices such as locating pins. This method is a bit cumbersome and inconvenient to quickly position the valve seat ring. In addition, in the subsequent processing process, if the valve seat ring needs to be rotated, it will also bring many inconveniences.

[0004] Therefore, in view of the fact that the above-mentioned valve seat ring positioning method uses clamping devices such as positioning pins, which is not convenient for quickly positioning the valve seat ring, a positioning tool for valve seat ring processing can be designed. By using a threaded transmission structure in conjunction with a gear set transmission structure, the valve seat ring can be positioned while being conveniently rotated. Utility Model Content

[0005] In order to overcome the problem that the positioning method of the valve seat ring adopts a clamping device such as a positioning pin, it is inconvenient to quickly position the valve seat ring.

[0006] The technical solution of the utility model is: a positioning tool for valve seat ring processing, including a tripod, a workbench, a through groove, a rotating component, a clamping component, and a limit component; an iron tripod for supporting is fixedly connected to the lower end of the workbench, a cavity for accommodating the rotating component is opened in the workbench, through grooves that penetrate the cavity from top to bottom are opened on the left and right sides of the upper end of the workbench, the rotating component that is rotated by a motor-driven gear set is installed in the cavity, a clamping component that is driven by a motor-driven threaded transmission is installed in the workbench, a power structure in the clamping component is installed at the front end of the workbench, and a limit component with an elastic limit structure is installed at the upper end of the turntable.

[0007] Preferably, a tripod supports the entire positioning tooling to ensure the stability of the workbench. The tripod is made of iron material, which has sufficient strength and durability. The rotating assembly drives the gear set to rotate through a motor, so that the turntable can realize the rotation function, which is convenient for the rotation processing and grinding of the valve seat ring. The clamping assembly is responsible for fixing the valve seat ring to ensure its stability during the processing. The clamping force is adjusted and controlled by the motor-driven threaded transmission, so as to fix the valve seat rings of different sizes. The limiting assembly adopts an elastic limiting structure, and the inner ring of the valve seat ring is fixed by the elastic force of the spring, so that it can be firmly placed on the turntable.

[0008] Preferably, the rotating assembly includes a No. 1 rotating motor, a rotating shaft, and a limit column; the No. 1 rotating motor for driving the rotating shaft to rotate is installed in a cavity provided in the workbench, the limit column for supporting the rotation of the rotating shaft is fixedly connected to the bottom of the cavity, the upper end of the rotating shaft is fixedly connected to the output shaft of the No. 1 rotating motor, and the lower end of the rotating shaft is inserted into the outer wall of the limit column. The No. 1 rotating motor is the power source of the rotating assembly and is responsible for providing driving force to rotate the rotating shaft. The rotating shaft can be made of wear-resistant, corrosion-resistant materials with a certain strength to withstand the torque during the rotation process. The limit column supports and limits the rotation range of the rotating shaft to ensure that the rotating shaft remains stable during the rotation process and prevents it from shaking.

[0009] Preferably, the rotating assembly further includes a limit rod, a support shaft, and a turntable; the limit rod for supporting the rotation of the support shaft is fixedly connected to the bottom of the cavity and is located on the left side of the limit column, the lower end of the support shaft is inserted into the outer wall of the limit rod, and a turntable for placing the valve seat ring is installed on the upper end of the support shaft. The structure of the limit rod is similar to that of the limit column, but the position is different. It plays the role of supporting and positioning the support shaft. The support shaft is responsible for supporting the turntable and driving the turntable and the valve seat ring to rotate through its rotation.

[0010] Preferably, the rotating assembly also includes gear No. 1 and gear No. 2; gear No. 1 for transmitting the rotation of gear No. 2 is fixedly connected to the outer wall of the rotating shaft, gear No. 2 is fixedly connected to the outer wall of the supporting shaft, gear No. 1 is meshingly connected with gear No. 2, gear No. 1 and gear No. 2 constitute a gear transmission mechanism for transmitting the rotational power of the motor to the supporting shaft, thereby driving the turntable to rotate; when the motor drives the rotating shaft to rotate, gear No. 1 drives gear No. 2 to rotate, thereby driving the supporting shaft and the turntable to rotate.

[0011] Preferably, the clamping assembly includes a No. 2 rotating motor, a No. 1 bidirectional threaded rod, a No. 2 bidirectional threaded rod, a moving seat, and a clamping rod; the No. 2 rotating motor is installed on the left side of the front end of the workbench, and a rotating groove is installed on the inner wall of the rear end of the workbench. The No. 1 bidirectional threaded rod and the No. 2 bidirectional threaded rod are both composed of two groups of threaded rods with opposite thread directions. The front end of the No. 1 bidirectional threaded rod is fixedly connected to the output shaft of the No. 2 rotating motor, the rear end of the No. 1 bidirectional threaded rod is rotatably connected to the rotating groove, the rear end of the No. 2 bidirectional threaded rod is rotatably connected to the rotating groove, the front end of the No. 2 bidirectional threaded rod extends forward to the front end of the workbench, and the moving seat An internal thread that matches the external thread of the two-way threaded rod is opened inside, and the No. 1 two-way threaded rod and the No. 2 two-way threaded rod are both threadedly connected to the moving seat, and a clamping rod for clamping the valve seat ring is installed at one end of the moving seat. The No. 2 rotating motor serves as the power source of the clamping assembly and is responsible for driving the rotation of the No. 1 two-way threaded rod. Through the two-way thread design, the No. 1 two-way threaded rod can drive the two moving seats to move in opposite directions when rotating, and a clamping rod is installed at one end of the moving seat. When the moving seat moves under the drive of the two-way threaded rod, the clamping rod also moves accordingly, thereby clamping the valve seat ring.

[0012] Preferably, the clamping assembly includes a driving wheel, a driven wheel, and a belt; the driving wheel is fixedly connected to the outer wall of the No. 1 two-way threaded rod, the driven wheel is fixedly connected to the outer wall of the No. 2 two-way threaded rod, and the upper ends of the driving wheel and the driven wheel are connected by a belt for rotating together. When the driving wheel rotates under the drive of the No. 2 rotating motor, the driven wheel is driven to rotate through the belt, thereby ensuring that the No. 1 two-way threaded rod and the No. 2 two-way threaded rod can rotate synchronously, realizing the symmetrical movement of the moving seat and the stable clamping of the valve seat ring.

[0013] Preferably, the limit assembly includes a spring and a limit support plate; a cylinder for fixing the limit assembly is installed on the upper end of the turntable, there are four groups of springs and one end of the spring is fixedly connected to the outer wall of the cylinder, and the other end of the spring is installed with a limit support plate. The spring provides the necessary elastic force so that the limit support plate can be displaced when subjected to the external force of the inner ring of the valve seat ring, thereby limiting the movement of the valve seat ring and ensuring that the valve seat ring is firmly fixed to the upper end of the turntable. At the same time, the limit support plate is usually made of wear-resistant and corrosion-resistant materials for long-term use.

[0014] Beneficial effects of the utility model:

[0015] 1. The coordinated work of the rotating assembly and the clamping assembly enables the valve seat ring to rotate flexibly to meet the processing requirements and be firmly clamped during the processing to prevent any shaking. At the same time, the elastic limiting function of the limiting assembly ensures that the valve seat ring is firmly fixed on the turntable, effectively avoiding displacement during the rotation process, thereby ensuring the smooth progress of the processing process;

[0016] 2. Through belt transmission, it is ensured that the No. 1 bidirectional threaded rod and the No. 2 bidirectional threaded rod can rotate synchronously, so as to realize the symmetrical movement of the moving seat and the stable clamping of the valve seat ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows a three-dimensional structure diagram of the positioning tool for machining the valve seat ring of the utility model;

[0018] Figure 2 The figure shows a front view schematic diagram of a positioning tool for machining a valve seat ring of the utility model;

[0019] Figure 3 Shown is a top view schematic diagram of a positioning tool for machining a valve seat ring of the utility model;

[0020] Figure 4 The three-dimensional structure diagram of the positioning tool rotating assembly for valve seat processing of the utility model is shown;

[0021] Figure 5 The figure shows a three-dimensional structure diagram of a positioning tool clamping assembly for valve seat processing of the utility model;

[0022] Figure 6 What is shown is a three-dimensional structural schematic diagram of a positioning tool and a limiting assembly for valve seat ring processing of the utility model.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. tripod; 2. workbench; 3. through slot; 401. rotating motor No. 1; 402. rotating shaft; 403. limiting column; 404. limiting rod; 405. supporting shaft; 406. turntable; 407. gear No. 1; 408. gear No. 2; 501. rotating motor No. 2; 502. bidirectional threaded rod No. 1; 503. bidirectional threaded rod No. 2; 504. moving seat; 505. clamping rod; 506. driving wheel; 507. driven wheel; 508. belt; 601. spring; 602. limiting support plate. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-3The utility model provides an embodiment: a positioning tool for valve seat ring processing, including a tripod 1, a workbench 2, a through slot 3, a rotating assembly, a clamping assembly, and a limiting assembly; the lower end of the workbench 2 is fixedly connected with an iron tripod 1 for support, a cavity for accommodating the rotating assembly is opened in the workbench 2, and through slots 3 that penetrate the cavity from top to bottom are opened on the left and right sides of the upper end of the workbench 2. The rotating assembly driven by the motor to rotate the gear set is installed in the cavity, and a clamping assembly driven by the motor to drive the thread transmission is installed in the workbench 2. The power structure in the clamping assembly is installed at the front end of the workbench 2, and the limiting assembly with an elastic limiting structure is installed at the upper end of the turntable 406. The tripod 1 supports the entire positioning tooling to ensure the stability of the workbench 2. The tripod 1 is made of iron material, which has sufficient strength and durability. The rotating component drives the gear set to rotate through the motor, so that the turntable 406 can realize the rotation function, which is convenient for the rotation processing and grinding of the valve seat ring. The clamping component is responsible for fixing the valve seat ring to ensure its stability during the processing. The clamping force is adjusted and controlled by the motor-driven threaded transmission, so as to fix the valve seat rings of different sizes. The limiting component adopts an elastic limiting structure, and the inner ring of the valve seat ring is fixed by the elastic force of the spring 601, so that it is firmly placed on the turntable 406.

[0026] See also Figure 4 , Figure 6In this embodiment, the rotating assembly includes a No. 1 rotating motor 401, a rotating shaft 402, and a limiting column 403; the No. 1 rotating motor 401 for driving the rotating shaft 402 to rotate is installed in a cavity provided in the workbench 2, and the limiting column 403 for supporting the rotation of the rotating shaft 402 is fixedly connected to the bottom of the cavity, the upper end of the rotating shaft 402 is fixedly connected to the output shaft of the No. 1 rotating motor 401, and the lower end of the rotating shaft 402 is plugged into the outer wall of the limiting column 403, and the rotating assembly also includes a limiting rod 404, a supporting shaft 405, and a rotating disk 406; the limiting rod 404 for supporting the rotation of the supporting shaft 405 is fixedly connected to the bottom of the cavity and is located on the left side of the limiting column 403, and the supporting shaft 4 The lower end of 05 is inserted into the outer wall of the limit rod 404, and a turntable 406 for placing the valve seat ring is installed on the upper end of the support shaft 405. The rotating assembly also includes a No. 1 gear 407 and a No. 2 gear 408; the No. 1 gear 407 for transmitting the rotation of the No. 2 gear 408 is fixedly connected to the outer wall of the rotating shaft 402, and the No. 2 gear 408 is fixedly connected to the outer wall of the supporting shaft 405. The No. 1 gear 407 is meshed with the No. 2 gear 408. The No. 1 rotating motor 401 is the power source of the rotating assembly and is responsible for providing driving force to rotate the rotating shaft 402. The rotating shaft 402 can be made of wear-resistant, corrosion-resistant materials with a certain strength to withstand the torque during the rotation process. Column 403 supports and limits the rotation range of shaft 402, ensuring that shaft 402 remains stable during rotation and preventing it from shaking. The structure of limit rod 404 is similar to limit column 403, but the position is different. It supports and positions support shaft 405. Support shaft 405 is responsible for supporting turntable 406 and drives turntable 406 and valve seat ring to rotate through its rotation. Gear No. 1 407 and gear No. 2 408 constitute a gear transmission mechanism for transmitting the rotational power of the motor to support shaft 405, thereby driving turntable 406 to rotate. When the motor drives shaft 402 to rotate, gear No. 1 407 drives gear No. 2 408 rotates, thereby driving the support shaft 405 and the turntable 406 to rotate. The limit assembly includes a spring 601 and a limit support plate 602. A cylinder for fixing the limit assembly is installed on the upper end of the turntable 406. There are four groups of springs 601, and one end of the springs 601 is fixedly connected to the outer wall of the cylinder. The other end of the springs 601 is installed with a limit support plate 602. The springs 601 provide the necessary elastic force so that the limit support plate 602 can be displaced when subjected to the external force of the inner ring of the valve seat ring, thereby limiting the movement of the valve seat ring and ensuring that the valve seat ring is firmly fixed to the upper end of the turntable 406. At the same time, the limit support plate 602 is usually made of wear-resistant and corrosion-resistant materials for long-term use.

[0027] See also Figure 5In this embodiment, the clamping assembly includes a No. 2 rotating motor 501, a No. 1 bidirectional threaded rod 502, a No. 2 bidirectional threaded rod 503, a moving seat 504, and a clamping rod 505; the No. 2 rotating motor 501 is installed on the left side of the front end of the workbench 2, and a rotating groove is installed on the inner wall of the rear end of the workbench 2. The No. 1 bidirectional threaded rod 502 and the No. 2 bidirectional threaded rod 503 are both composed of two groups of threaded rods with opposite thread directions. The front end of the No. 1 bidirectional threaded rod 502 is fixedly connected to the output shaft of the No. 2 rotating motor 501, and the No. 1 bidirectional threaded rod 503 is fixedly connected to the output shaft of the No. 2 rotating motor 501. The rear end of the first bidirectional threaded rod 502 is rotatably connected to the rotating groove, the rear end of the second bidirectional threaded rod 503 is rotatably connected to the rotating groove, the front end of the second bidirectional threaded rod 503 extends forward to the front end of the workbench 2, and the moving seat 504 is provided with an internal thread that matches the external thread of the bidirectional threaded rod. The first bidirectional threaded rod 502 and the second bidirectional threaded rod 503 are both threadedly connected to the moving seat 504, and a clamping rod 505 for clamping the valve seat ring is installed at one end of the moving seat 504. The clamping assembly includes a driving wheel 506, a pulley 507, and a pulley 508. The driving wheel 506 is fixedly connected to the outer wall of the No. 1 two-way threaded rod 502, and the driven wheel 507 is fixedly connected to the outer wall of the No. 2 two-way threaded rod 503. The upper ends of the driving wheel 506 and the driven wheel 507 rotate together and are connected with a belt 508. The No. 2 rotating motor 501 is used as the power source of the clamping assembly and is responsible for driving the rotation of the No. 1 two-way threaded rod 502. Through the two-way thread design, the No. 1 two-way threaded rod 502 can drive the two moving seats 504 to rotate in opposite directions when rotating. The movable seat 504 moves in the same direction, and a clamping rod 505 is installed at one end of the movable seat 504. When the movable seat 504 moves under the drive of the bidirectional threaded rod, the clamping rod 505 also moves accordingly, thereby clamping the valve seat ring. When the driving wheel 506 rotates under the drive of the second rotating motor 501, the driven wheel 507 is driven to rotate through the belt 508, thereby ensuring that the first bidirectional threaded rod 502 and the second bidirectional threaded rod 503 can rotate synchronously, thereby realizing the symmetrical movement of the movable seat 504 and the stable clamping of the valve seat ring.

[0028] When working, the staff first fixes the inner ring of the valve seat ring tightly on the turntable 406 through the extrusion spring 601, and then starts the No. 2 rotating motor 501, which drives the No. 1 bidirectional threaded rod 502 to start rotating. At the same time, the driving wheel 506 rotates due to the rotation of the No. 1 bidirectional threaded rod 502, and drives the driven wheel 507 to rotate synchronously through the belt 508, so as to ensure that the No. 1 bidirectional threaded rod 502 and the No. 2 bidirectional threaded rod 503 can operate synchronously. Due to the bidirectional thread design, when the bidirectional threaded rod rotates, the two moving seats 504 will move in opposite directions. As the moving seat 504 moves, the clamping rod 505 also adjusts its position accordingly to achieve stable clamping of the valve seat ring.

[0029] When the valve seat ring needs to be rotated, first release the clamping rod 505 that fixes the valve seat ring, then start the No. 1 rotating motor 401, which will drive the rotating shaft 402 to rotate, and then drive the No. 1 gear 407 to rotate. In this way, the rotational power of the No. 1 rotating motor 401 is transmitted to the supporting shaft 405, thereby driving the turntable 406 to rotate. When the turntable 406 rotates, the valve seat ring also rotates, thereby performing the processing operation.

[0030] Through the above steps, the coordinated work of the rotating assembly and the clamping assembly enables the valve seat ring to be flexibly rotated to meet the processing requirements, and to be firmly clamped during the processing to prevent any shaking. At the same time, the elastic limiting effect of the limiting assembly ensures that the valve seat ring is firmly fixed on the turntable 406, effectively avoiding displacement during the rotation process, thereby ensuring the smooth progress of the processing process and solving the problem that the positioning method of the valve seat ring adopts a clamping device such as a positioning pin, which makes it inconvenient to quickly position the valve seat ring.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A positioning tool for valve seat processing, comprising a stand (1), a workbench (2), and a through groove (3); characterized in that: It also includes a rotating component, a clamping component, and a limiting component; the lower end of the workbench (2) is fixedly connected to an iron tripod (1) for supporting, a cavity for accommodating the rotating component is provided in the workbench (2), and through grooves (3) extending vertically through the cavity are provided on the left and right sides of the upper end of the workbench (2), and the rotating component driven by a motor to rotate the gear set is installed in the cavity, and a clamping component driven by a motor to drive the thread transmission is installed in the workbench (2), and a power structure in the clamping component is installed at the front end of the workbench (2), and a limiting component provided with an elastic limiting structure is installed at the upper end of the turntable (406).

2. A positioning tool for valve seat ring processing according to claim 1, characterized in that: The rotating assembly comprises a first rotating motor (401), a rotating shaft (402), and a limiting column (403); the first rotating motor (401) for driving the rotating shaft (402) to rotate is installed in a cavity provided in a workbench (2); the limiting column (403) for supporting the rotating shaft (402) to rotate is fixedly connected to the bottom of the cavity; the upper end of the rotating shaft (402) is fixedly connected to the output shaft of the first rotating motor (401); and the lower end of the rotating shaft (402) is plugged into the outer wall of the limiting column (403).

3. A positioning tool for valve seat ring processing according to claim 2, characterized in that: The rotating assembly further comprises a limiting rod (404), a supporting shaft (405), and a rotating disk (406); the limiting rod (404) for supporting the rotation of the supporting shaft (405) is fixedly connected to the bottom of the cavity and is located on the left side of the limiting column (403); the lower end of the supporting shaft (405) is plugged into the outer wall of the limiting rod (404); and the upper end of the supporting shaft (405) is provided with a rotating disk (406) for placing a valve seat ring.

4. A positioning tool for valve seat processing according to claim 3, characterized in that: The rotating assembly further comprises a first gear (407) and a second gear (408); the first gear (407) for driving the second gear (408) to rotate is fixedly connected to the outer wall of the rotating shaft (402), the second gear (408) is fixedly connected to the outer wall of the supporting shaft (405), and the first gear (407) and the second gear (408) are meshedly connected.

5. The positioning tool for valve seat ring processing according to claim 1, characterized in that: The clamping assembly comprises a No. 2 rotating motor (501), a No. 1 bidirectional threaded rod (502), a No. 2 bidirectional threaded rod (503), a moving seat (504), and a clamping rod (505); the No. 2 rotating motor (501) is installed on the left side of the front end of the workbench (2); a rotating groove is installed on the inner wall of the rear end of the workbench (2); the No. 1 bidirectional threaded rod (502) and the No. 2 bidirectional threaded rod (503) are both composed of two groups of threaded rods with opposite thread directions; the front end of the No. 1 bidirectional threaded rod (502) is fixedly connected to the output shaft of the No. 2 rotating motor (501) Then, the rear end of the No. 1 bidirectional threaded rod (502) is rotatably connected to the rotating groove, the rear end of the No. 2 bidirectional threaded rod (503) is rotatably connected to the rotating groove, the front end of the No. 2 bidirectional threaded rod (503) extends forward to the front end of the workbench (2), and the movable seat (504) is provided with an internal thread that matches the external thread of the bidirectional threaded rod. The No. 1 bidirectional threaded rod (502) and the No. 2 bidirectional threaded rod (503) are both threadedly connected to the movable seat (504), and a clamping rod (505) for clamping a valve seat ring is installed at one end of the movable seat (504).

6. A positioning tool for valve seat processing according to claim 5, characterized in that: The clamping assembly comprises a driving wheel (506), a driven wheel (507), and a belt (508); the driving wheel (506) is fixedly connected to the outer wall of the first bidirectional threaded rod (502), the driven wheel (507) is fixedly connected to the outer wall of the second bidirectional threaded rod (503), and the upper ends of the driving wheel (506) and the driven wheel (507) are connected to the belt (508) for joint rotation.

7. The positioning tool for valve seat ring processing according to claim 3, characterized in that: The limiting assembly comprises a spring (601) and a limiting support plate (602); a cylinder for fixing the limiting assembly is installed at the upper end of the rotating disk (406); the spring (601) has four groups and one end is fixedly connected to the outer wall of the cylinder; the other end of the spring (601) is installed with the limiting support plate (602).

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