A lever tooth engagement mechanism
By designing a lever-type gear-setting mechanism, rapid angular positioning and clamping of intermediate shaft gears in dual intermediate shaft series gearboxes is achieved, solving the problems of high machining difficulty and inaccurate positioning in existing technologies, and improving machining efficiency and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN FASHITE AUTOMOBILE TRANSMISSION CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-07-14
AI Technical Summary
Existing technologies make it difficult to achieve fast and accurate angular positioning and clamping when machining intermediate shaft gears in dual intermediate shaft gearboxes. This is especially unsuitable for production lines with frequent product changes, and the machining process is difficult and costly.
The lever-type gear setting mechanism includes a base, connecting rod, gear gauge, limiting plate, and adjustment structure. Through the ball-head handle driving rod and elastic reset mechanism, it can quickly position and clamp the gear gauge to meet the processing requirements of different workpieces.
It enables rapid angular positioning and clamping of intermediate shaft gears in dual intermediate shaft series gearboxes, improving processing efficiency and positioning accuracy, reducing operational difficulty, and making it suitable for frequent production change scenarios.
Smart Images
Figure CN224487867U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining, specifically to a lever-type gear-aligning mechanism. Background Technology
[0002] During the development of the dual intermediate shaft series gearbox, the design of the intermediate shaft was complex and difficult to manufacture. The 13-speed intermediate shaft features a four-tooth structure, requiring at least one tooth to have the same angular orientation. Currently, gear machining typically uses a fixed square pin on a fixture to engage the tooth groove. However, this method has significant drawbacks: the clearance between the square pin and the tooth groove is difficult to control precisely during manufacturing, leading to high machining difficulty and compromising positioning accuracy and reliability. Therefore, gear machining requires the use of fixtures to achieve higher mechanical precision and more reliable angular positioning.
[0003] Patent CN219561673U discloses a gear-shaping fixture for angular positioning. Angular positioning is achieved through the cooperation of a pull rod at the center of the positioning seat and a ball-head plunger, ensuring that the machined workpiece meets the relative positional relationship between the tooth profile and related internal structures. However, because it relies on a hydraulic rod to provide clamping force and has specific requirements for the workpiece structure, it is not suitable for production lines with frequent production changes.
[0004] Given the frequent development of new products, rapid prototyping and testing are required. Against this backdrop, there is an urgent need for a gear-aligning mechanism that is easy to adjust, has a wide range of applications, is inexpensive to manufacture, and has precise positioning. Utility Model Content
[0005] The purpose of this invention is to provide a lever-type gear-aligning mechanism to achieve rapid angular positioning and clamping during the machining of intermediate shaft gears in a dual intermediate shaft gearbox series.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A lever-type gear-aligning mechanism includes a base, a connecting rod movably mounted on the base, a gear-aligning gauge connected to the front end of the connecting rod, and a limit plate connected to the rear end of the connecting rod.
[0008] The base is also equipped with an adjustment structure, one end of which contacts the limit plate and the other end is the operating end;
[0009] The base is also equipped with a tooth gauge reset structure.
[0010] The adjustment structure includes an operating handle located above the base. The operating handle is fixed to the upper surface of the base via a handle seat. The operating handle includes a drive rod that contacts the limit plate and an operating end ball handle.
[0011] The angle between the ball joint handle and the drive rod is fixed at 180°.
[0012] A semi-circular protrusion is provided at the end of the drive rod that contacts the limit plate.
[0013] The base has a through hole that allows the connecting rod to pass through and a groove that allows the gear gauge to move. A shoulder is formed where the through hole and the groove meet.
[0014] The gear reset mechanism is an elastic component, with one end abutting the rear end of the gear and the other end abutting the shoulder.
[0015] The tooth gauge reset mechanism is a compression spring, which is mounted on the connecting rod.
[0016] A cover plate is installed above the groove.
[0017] A limit protrusion is provided at the upper end of the limit plate.
[0018] The front end of the connecting rod is detachably connected to a pair of gear gauges.
[0019] Compared with the prior art, the present invention has the following beneficial technical effects:
[0020] This utility model provides a lever-type gear-setting mechanism that, through the coordinated design of a base, connecting rod, gear-setting gauge, limiting plate, and adjusting structure, achieves rapid angular positioning and clamping for machining intermediate shaft gears in a dual intermediate shaft gearbox series. The movable installation of the connecting rod allows it to drive the gear-setting gauge and limiting plate to move synchronously, thereby achieving rapid positioning of the gear-setting gauge and stable clamping of the workpiece. The adjusting structure provides a convenient operating method, allowing operators to easily control the position of the limiting plate, further improving clamping efficiency. Simultaneously, the gear-setting gauge reset structure ensures consistent and accurate positioning, providing a reliable guarantee for subsequent machining. This design cleverly combines the functions of each component, significantly improving machining efficiency and ease of operation. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the extended state of a lever-type toothed mechanism in an embodiment of this utility model.
[0022] Figure 2 This is a schematic diagram of the retracted state of a lever-type gear-aligning mechanism in an embodiment of this utility model.
[0023] In the diagram, 1 is the base; 2 is the gear gauge; 3 is the cover plate; 4 is the handle seat; 5 is the ball joint handle; 6 is the drive rod; 7 is the limit plate; 8 is the connecting rod; and 9 is the compression spring. Detailed Implementation
[0024] During the development of the dual intermediate shaft series gearbox, the design of the intermediate shaft is quite complex and difficult to manufacture. The 13-speed intermediate shaft has a 4-tooth structure, and one of the teeth in the 4-tooth configuration must have the same angular direction. Therefore, mechanical angular positioning is required during gear machining using a fixture. However, there is currently a lack of a gear-aligning device suitable for production lines with frequent changeovers.
[0025] Based on this, this utility model provides a simple lever-type manual gear-setting mechanism designed and developed for the machining of intermediate shafts. It has a wide range of applications, precise positioning, and is simple to manufacture. After long-term trial production verification, its performance is stable.
[0026] 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.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.
[0030] Reference Figure 1 and Figure 2 The image shows a specific embodiment of the lever-type gear-setting mechanism provided by this utility model, comprising:
[0031] A lever-type gear-aligning mechanism includes a base 1, on which a connecting rod 8 is movably mounted. The front end of the connecting rod 8 is connected to a gear-aligning gauge 2, and the rear end is connected to a limiting plate 7. This structural design allows the connecting rod 8 to move freely on the base 1, thereby driving the gear-aligning gauge 2 to perform corresponding movements and achieving the functions of gear alignment and limiting.
[0032] The base 1 is also equipped with an adjustment structure, one end of which contacts the limiting plate 7, and the other end is the operating end. This adjustment structure is used to control the movement of the limiting plate 7, thereby driving the gear gauge 2 to move via the connecting rod 8.
[0033] Specifically, the adjustment structure includes an operating handle positioned above the base 1. The operating handle is fixed to the upper surface of the base 1 via a handle seat 4. The operating handle includes a drive rod 6 that contacts the limiting plate 7 and a ball-head handle 5 as the operating end. The design of the operating handle facilitates the application of force by the operator. The interaction between the drive rod 6 and the limiting plate 7 enables the adjustment of the gear-aligning mechanism provided by this invention between the extended and retracted states. At the same time, the ball-head handle 5 provides a comfortable grip and convenient operation.
[0034] The ball joint handle 5 and the drive rod 6 are separate designs, connected by a fixed shaft on the handle seat. During use, the ball joint handle 5 and the drive rod 6 remain relatively stationary. In this specific embodiment, the fixed angle between the ball joint handle 5 and the drive rod 6 is preferably 180°. This separate design, combined with the fixed angle setting, ensures operational stability and consistency, facilitating precise control by the operator.
[0035] The end of the drive rod 6 that contacts the limiting plate 7 has a semi-circular protrusion. This protrusion design increases the contact area with the limiting plate 7, improves the pushing efficiency, reduces wear, and ensures smooth and durable operation.
[0036] The base 1 has a through hole for the connecting rod 8 to pass through and a groove for the gear gauge 2 to move. A shoulder is formed at the junction of the through hole and the groove. This design provides a path and space for the movement of the connecting rod 8 and the gear gauge 2, while the shoulder provides a support point for the reset mechanism of the gear gauge 2.
[0037] The reset mechanism for the gear gauge 2 is an elastic component, with one end abutting the rear end of the gear gauge 2 and the other end abutting the shoulder. In this specific embodiment, the preferred reset mechanism for the gear gauge 2 is a compression spring 9, which is mounted on the connecting rod 8. The elastic component ensures that the gear gauge 2 can automatically reset after completing the gear setting operation, improving work efficiency and ensuring the accuracy of gear setting.
[0038] A cover plate 3 is installed above the groove. The function of the cover plate 3 is to protect the internal connecting rod 8 and compression spring 9, prevent impurities from entering, and at the same time provide a closed environment to improve the stability and safety of the mechanism and extend its service life.
[0039] The upper end of the limiting plate 7 is provided with a limiting protrusion. This protrusion is used to prevent the limiting plate 7 from excessive displacement during movement, and plays a limiting role, ensuring that the limiting plate 7 moves within a predetermined range, thereby improving the safety and reliability of operation.
[0040] The front end of the connecting rod 8 is detachably connected to the gear gauge 2. This design allows the gear gauge 2 to be replaced or adjusted according to actual needs, increasing the flexibility and applicability of the mechanism and adapting to the processing requirements of workpieces of different sizes and types.
[0041] To make the lever-type gear-setting mechanism provided by this utility model easier to understand, it will be explained below in conjunction with its working principle.
[0042] During the assembly of this lever-type gear-aligning mechanism, the handle seat 4 is fixed to the base 1, and the connecting rod 8 is passed through the compression spring 9, with one end connected to the gear-aligning gauge 2 and the other end passing through the sliding groove hole on the base 1 and handle seat 4 to connect to the limiting plate 7. Then, the cover plate 3 is installed and fixed. Subsequently, the drive rod 6 is fixed to the handle seat 4 by a cylindrical pin, and finally, the ball-head handle 5 is inserted to form a complete assembly. This assembly method achieves organic combination between components, ensuring the stability of the mechanism and laying the foundation for subsequent operations. The front end of the connecting rod 8 is detachably connected to the gear-aligning gauge 2. This design allows the gear-aligning gauge 2 to be quickly replaced or adjusted according to processing requirements, increasing the flexibility of the mechanism. Simultaneously, the limiting protrusion at the upper end of the limiting plate 7 prevents the drive rod 6 from excessively displacing and detaching from the contact state with the limiting plate 7, thus playing a limiting role and ensuring operational safety.
[0043] During gear setting, lift the ball head handle 5 upwards. The gear gauge 2 moves forward into the positioning groove of the workpiece under the action of the compression spring 9, becoming a reference. Figure 1The extended position shown enables angular positioning. This process utilizes the spring force to ensure the gear gauge 2 fits tightly against the workpiece positioning groove, achieving precise angular positioning. The operation is simple and the positioning accuracy is high, effectively improving processing efficiency and quality. The semi-circular protrusion design at the front end of the drive rod 6 increases the contact area with the limiting plate 7, improving pushing efficiency, reducing wear, and ensuring stable movement of the limiting plate 7, thereby guaranteeing the accuracy of the gear-aligning operation.
[0044] After machining is completed, press down on the ball head handle 5 to rotate the drive rod 6. The semi-circular protrusion at the front end of the drive rod 6 pushes the limiting plate 7 backward, locking the drive rod 6 and the limiting plate 7 in a locked state. The entire gear-setting mechanism then becomes a reference. Figure 2 The workpiece is shown in the retracted state. At this time, the workpiece can be removed from the fixture. This design makes the disassembly of the workpiece simple and quick. The drive rod 6 and the limit plate 7 work together to achieve quick locking and unlocking, which improves work efficiency and avoids damage to the workpiece, ensuring the integrity and quality of the workpiece.
[0045] Furthermore, the mechanism is adjustable. The contact force on the gear gauge 2 can be changed by selecting different specifications of compression springs 9, the length of the drive rod 6 can be adjusted to change the travel distance of the gear gauge 2, or the length of the ball joint handle 5 can be increased to make operation easier. These adjustment functions can meet the processing requirements of different workpieces and the operating habits of operators, enhancing the versatility and adaptability of the mechanism.
[0046] This solution achieves rapid angular positioning and clamping for machining intermediate shaft gears in dual-intermediate-shaft gearboxes through a series of design features. A lever-type manual operation structure combined with a spring return mechanism allows operators to easily and accurately control the positioning and resetting of the gear gauge. The coordinated operation of the connecting rod and the limiting plate ensures the rapid insertion and withdrawal of the gear gauge from the gear slot, while adjustable spring specifications, drive rod length, and handle length enhance the adaptability and ease of operation. The quick-release design for the workpiece and the replaceable gear gauge further improve work efficiency and flexibility. In summary, this solution effectively improves machining efficiency and quality, reduces operational difficulty, and is highly suitable for new product trial production and frequent production changeover scenarios.
[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A lever-type gear-setting mechanism, characterized in that, Includes a base (1), on which a connecting rod (8) is movably mounted, the front end of the connecting rod (8) is connected to a tooth gauge (2), and the rear end is connected to a limit plate (7); An adjustment structure is also provided on the base (1), one end of which is in contact with the limiting plate (7), and the other end is the operating end; The base (1) is also provided with a tooth gauge (2) reset structure.
2. The lever-type gear-setting mechanism according to claim 1, characterized in that, The adjustment structure includes an operating handle disposed above the base (1). The operating handle is fixed to the upper surface of the base (1) by a handle seat (4). The operating handle includes a drive rod (6) that contacts the limiting plate (7) and an operating end ball handle (5).
3. The lever-type gear-setting mechanism according to claim 2, characterized in that, The angle between the ball-head handle (5) and the drive rod (6) is fixed at 180°.
4. A lever-type gear-setting mechanism according to claim 2, characterized in that, The end of the drive rod (6) that contacts the limiting plate (7) is provided with a semi-circular protrusion.
5. A lever-type gear-setting mechanism according to claim 1, characterized in that, The base (1) has a through hole that allows the connecting rod (8) to pass through and a groove that allows the gear gauge (2) to move. A shoulder is formed at the junction of the through hole and the groove.
6. A lever-type gear-setting mechanism according to claim 5, characterized in that, The reset mechanism of the tooth gauge (2) is an elastic component. One end of the component abuts against the rear end of the tooth gauge (2), and the other end abuts against the shoulder.
7. A lever-type gear-setting mechanism according to claim 6, characterized in that, The reset mechanism for the tooth gauge (2) is a compression spring (9), which is mounted on the connecting rod (8).
8. A lever-type gear-setting mechanism according to claim 5, characterized in that, A cover plate (3) is installed above the groove.
9. A lever-type gear-setting mechanism according to claim 1, characterized in that, The upper end of the limiting plate (7) is provided with a limiting protrusion.
10. A lever-type gear-setting mechanism according to claim 1, characterized in that, The front end of the connecting rod (8) is detachably connected to a toothed gauge (2).