Fixed slotting device for automobile transmission gear machining

Abstract

The utility model relates to the technical field of automobile transmission gear machining, and discloses a fixed slotting device for automobile transmission gear machining, four sliding rails are uniformly arranged on the upper surface of a machining seat, and by arranging linkage structures such as an adjusting screw rod, a threaded sleeve and a driving arm, when a positive and negative rotation motor drives the adjusting screw rod to rotate, the sliding rails are driven by the driving arm to rotate; the threaded sleeve axially moves along the adjusting screw rod, the driving arms in the grooves in the side portions of the threaded sleeve synchronously swing to push the sliding blocks to slide in the radial direction along the sliding rails, the arc-shaped clamps on the four installation bases synchronously move centripetally or centrifugally, uniform circumferential clamping force is formed, and the structure can automatically adjust the clamping range according to the outer diameter size of a gear. Through symmetrical distribution and clamping of the four sets of arc-shaped clamps, the central axis of the gear is accurately aligned with the machining reference, the problem of positioning deviation caused by single-direction fixing is solved, synchronous linkage positioning of multiple clamps is achieved, and it is guaranteed that the gear is evenly stressed and the center is stable in the machining process.

Description

A fixed grooving device for machining automotive gearbox gears Technical Field

[0001] This utility model relates to the field of automotive transmission gear processing technology, and in particular to a fixed grooving device for processing automotive transmission gears. Background Technology

[0002] In the automotive manufacturing industry, gearbox gears are key transmission components, and their machining accuracy directly affects the vehicle's transmission efficiency, noise control, and service life. During the machining process of automotive gearbox gears, the grooving device is a crucial piece of equipment for ensuring gear quality. It needs to precisely fix the gears and stably complete the grooving operation to ensure that the dimensional accuracy, shape accuracy, and surface quality of the gear grooves meet design requirements.

[0003] Currently, most gear slotting devices on the market use simple clamps or chucks to fix the gears. They usually apply fixing force to the gears from only one direction, which is difficult to adapt to the complex shape structure of gears of different specifications. As a result, the gear's central axis cannot be accurately aligned with the machining datum during clamping, resulting in low positioning accuracy. During machining, due to the external forces such as cutting force and vibration, the single fixing method cannot provide a sufficiently stable clamping force, and the gear is very prone to loosening. Summary of the Invention

[0004] To address the shortcomings of traditional methods that apply fixing force to gears from only one direction, making it difficult to adapt to the complex shapes of gears of different specifications, resulting in the inability to ensure precise alignment of the gear's central axis with the machining datum during clamping and low positioning accuracy, and the inability of single-fixation devices to provide sufficiently stable clamping force due to external forces such as cutting forces and vibrations during machining, which easily lead to gear loosening, this invention provides a fixing and grooving device for machining automotive gearbox gears. This device has the advantages of high positioning accuracy and adaptability to various gear models, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a fixed grooving device for machining automotive gearbox gears, comprising a machining base, four slide rails evenly provided on the upper surface of the machining base, sliders slidably mounted inside each slide rail, mounting seats fixedly mounted on the upper ends of each slider, arc-shaped clamps provided on the inner side of each mounting seat, a drive cavity provided inside the machining base, a forward and reverse motor mounted at the bottom of the machining base, an adjusting screw rotatably mounted in the middle of the drive cavity, the output end of the forward and reverse motor connected to the bottom of the adjusting screw via a coupling, a threaded sleeve threaded on the surface of the adjusting screw, four grooves provided on the side of the threaded sleeve, drive arms hingedly mounted inside each groove, two connecting plates fixedly mounted on the bottom of each slider, and the upper ends of the drive arms respectively hinged to the inner sides of the two connecting plates.

[0006] Preferably, the bottom of the slide rail is connected to the interior of the drive cavity, a concave plate is fixedly installed on the top of the mounting base, and an opening block is fixedly installed on one side of the arc-shaped clamp.

[0007] The perforated insert allows for quick insertion into the mounting base slot, and the limiting structure enables the detachable installation of the arc-shaped clamp, facilitating the replacement of gears to fit different components.

[0008] Preferably, the mounting base has a slot on its inner side, the perforated plug is inserted into the mounting base through the slot, and a limit plug is slidably installed in the middle of the concave plate.

[0009] By setting a limit rod, an open-hole insert can be inserted to lock the arc-shaped fixture, preventing the fixture from loosening during processing and improving the stability of the fixture.

[0010] Preferably, the bottom of the limiting rod passes through the mounting base and is connected to the inside of the opening block, and a limiting piece is fixedly installed in the middle of the limiting rod.

[0011] By setting the limit plate, the movement of the limit rod is limited, ensuring its stable insertion into the hole block and guaranteeing the installation and positioning accuracy of the arc-shaped clamp.

[0012] Preferably, a compression spring is fixedly installed at the upper end of the limiting plate, and the compression spring is sleeved on the outside of the limiting rod and its top is fixedly installed on the upper inner side of the concave plate.

[0013] By using a compression spring, an elastic thrust is provided to the limit rod, which automatically locks the opening block, enhancing the stability and vibration resistance of the arc-shaped clamp installation.

[0014] Preferably, a robotic arm is mounted on the upper end of the processing base, a cutting tool is mounted on the upper end of the robotic arm, and a storage box is fixedly mounted on the side of the processing base, with multiple placement slots on the surface of the storage box.

[0015] With the addition of storage boxes and placement slots, different sizes of curved fixtures can be stored in categories, facilitating quick access and replacement, and improving processing efficiency and device compatibility.

[0016] This utility model has the following advantages:

[0017] 1. By setting up a linkage structure including an adjusting screw, threaded sleeve, and drive arm, when the forward and reverse motor drives the adjusting screw to rotate, the threaded sleeve moves along the axial direction of the adjusting screw, and the drive arm in its side groove swings synchronously, pushing the slider to slide radially along the slide rail. This causes the arc-shaped clamps on the four mounting seats to move synchronously towards the center or centrifugally, forming a uniform circumferential clamping force. This structure can automatically adjust the clamping range according to the outer diameter of the gear. Through the symmetrical distribution of the four sets of arc-shaped clamps, the central axis of the gear is precisely aligned with the machining datum, avoiding the positioning deviation problem caused by fixing in a single direction. This achieves synchronous linkage positioning of multiple clamps, ensuring that the gear is subjected to uniform force and is centrally stable during machining.

[0018] 2. The detachable fixture installation structure, consisting of an opening block, a limiting rod, and a compression spring, allows the arc-shaped fixture to be inserted into the inner slot of the mounting base via the opening block on one side. The compression spring pushes the limiting rod through the mounting base and into the opening block, forming an elastic lock. When it is necessary to replace the fixture with one of different sizes, simply pull the limiting rod upwards to compress the spring, causing the limiting rod to disengage from the opening block, allowing the arc-shaped fixture to be pulled out of the mounting base for replacement. This allows for quick disassembly or installation of arc-shaped fixtures of different specifications, meeting diverse gear processing needs and improving the applicability and ease of operation of the device. Furthermore, the tooth structure and contact surface on the inner side of the arc-shaped fixture are in close contact with the surface of the gear being processed, increasing the contact area and friction with the gear. This effectively resists the radial force generated during grooving, preventing the gear from loosening or shifting due to force. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the front view of this utility model;

[0020] Figure 2 is a schematic diagram of the top view of the processing table surface of this utility model;

[0021] Figure 3 is a schematic diagram of the internal structure of the driving cavity of this utility model;

[0022] Figure 4 is a schematic diagram of the upper structure of the forward and reverse reversible motor of this utility model;

[0023] Figure 5 is an enlarged structural schematic diagram of point A in Figure 4 of this utility model.

[0024] In the diagram: 1. Machining base; 2. Robotic arm; 3. Cutting tool; 4. Slide rail; 5. Drive cavity; 6. Forward and reverse motor; 7. Adjusting screw; 8. Slider; 9. Mounting base; 10. Arc-shaped clamp; 11. Hole insert; 12. Threaded sleeve; 13. Groove; 14. Drive arm; 15. Connecting plate; 16. Concave plate; 17. Limiting rod; 18. Limiting piece; 19. Compression spring; 20. Storage box; 21. Placement slot. Detailed Implementation

[0025] 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.

[0026] Please refer to Figures 1-4. A fixed grooving device for machining automotive gearbox gears includes a machining base 1. Four slide rails 4 are evenly provided on the upper surface of the machining base 1. Slider 8 is slidably installed inside each slide rail 4. Mounting seat 9 is fixedly installed on the upper end of each slider 8. Arc-shaped clamps 10 are provided on the inner side of each mounting seat 9. When it is necessary to fix the gear, the slider 8 can slide radially inside the slide rail 4, driving the mounting seat 9 and the inner arc-shaped clamps 10 to move synchronously. The slide rail 4 provides precise guidance for the slider 8, ensuring that the movement trajectory of multiple mounting seats 9 is consistent. The arc-shaped clamps 10 are symmetrically distributed with the gear center as the reference. The inner side of the arc-shaped clamps 10 is provided with teeth that are adapted to the gear being machined. The tooth structure and contact surface of the inner side of the arc-shaped clamps 10 are closely fitted with the surface of the gear being machined, increasing the contact area and friction with the gear. This can effectively resist the radial force generated during the grooving process and prevent the gear from loosening or shifting due to force.

[0027] The machining base 1 has a drive cavity 5 inside. A forward and reverse motor 6 is installed at the bottom of the machining base 1. An adjusting screw 7 is rotatably installed in the middle of the drive cavity 5. The output end of the forward and reverse motor 6 is connected to the bottom of the adjusting screw 7 through a coupling. A threaded sleeve 12 is threaded on the surface of the adjusting screw 7. Four grooves 13 are opened on the side of the threaded sleeve 12. A drive arm 14 is hingedly installed inside each groove 13. Two connecting plates 15 are fixedly installed at the bottom of each slider 8. The upper ends of the drive arms 14 are respectively hinged to the inner side of the two connecting plates 15. The adjusting screw 7, threaded sleeve 12, and drive arm 14 are linked together. When the forward and reverse motor 6 drives the adjusting screw... When the screw 7 rotates, the threaded sleeve 12 moves axially along the adjusting screw 7, and the drive arm 14 in the side groove 13 swings synchronously, pushing the slider 8 to slide radially along the slide rail 4, so that the arc-shaped clamps 10 on the four mounting seats 9 move synchronously to the center or centrifugally, forming a uniform circumferential clamping force. This structure can automatically adjust the clamping range according to the outer diameter of the gear. Through the symmetrical distribution of the four sets of arc-shaped clamps 10, the central axis of the gear is precisely aligned with the machining datum, avoiding the positioning deviation problem caused by fixing in a single direction, realizing synchronous linkage positioning of multiple clamps, ensuring that the gear is subjected to uniform force and stable center during the machining process, and solving the problem of poor positioning accuracy in the prior art.

[0028] Please refer to Figures 2-5. The bottom of the slide rail 4 is connected to the interior of the drive cavity 5. A concave plate 16 is fixedly installed on the top of the mounting base 9. An opening block 11 is fixedly installed on one side of the arc-shaped clamp 10. A slot is provided on the inner side of the mounting base 9. The opening block 11 is inserted into the mounting base 9 through the slot. The slot limits the opening block 11, so that the arc-shaped clamp 10 is accurately aligned and fixed to the inner side of the mounting base 9.

[0029] A limiting rod 17 is slidably installed in the middle of the concave plate 16. The bottom of the limiting rod 17 passes through the mounting base 9 and is connected to the inside of the perforated insert block 11. When it is necessary to replace the clamps with different sizes, simply pull the limiting rod 17 upward to compress the spring 19, causing the limiting rod 17 to disengage from the perforated insert block 11. This allows the arc-shaped clamp 10 to be pulled out of the mounting base 9 for replacement. This enables quick disassembly or installation of arc-shaped clamps 10 of different specifications, meeting diverse gear processing needs and improving the applicability and ease of operation of the device. A limiting piece 18 is fixedly installed in the middle of 7. A compression spring 19 is fixedly installed at the upper end of the limiting piece 18. The compression spring 19 is sleeved on the outside of the limiting rod 17 and its top is fixedly installed on the upper inner side of the concave plate 16. A detachable clamping structure is provided with an opening block 11, a limiting rod 17 and a compression spring 19. The arc-shaped clamp 10 is inserted into the inner slot of the mounting base 9 through the opening block 11 on one side. The compression spring 19 pushes the limiting rod 17 through the mounting base 9 and inserts it into the opening block 11 to form an elastic lock.

[0030] A robotic arm 2 is mounted on the upper end of the machining base 1, and a cutting tool 3 is mounted on the upper end of the robotic arm 2. The robotic arm 2 and the drive device mounted on its upper end drive the cutting tool 3 to perform grooving operations on the gear. This is a mature existing technology in this field, so it is not described in detail. A storage box 20 is fixedly mounted on the side of the machining base 1. The surface of the storage box 20 has multiple placement slots 21. The placement slots 21 are equipped with multiple sets of arc-shaped clamps 10 of different models. When it is necessary to replace the arc-shaped clamps 10 to adapt to gears of different specifications, the corresponding model of arc-shaped clamps 10 can be directly selected from the placement slots 21 on the surface of the storage box 20. The partition design of the placement slots 21 allows arc-shaped clamps 10 of different tooth shapes and sizes to be stored separately, which is convenient for quick identification and retrieval.

[0031] Working principle: In actual use, the automotive gearbox gear to be processed is first placed between the four arc-shaped clamps 10 above the processing base 1. The forward and reverse motor 6 is started. The motor drives the adjusting screw 7 to rotate through the coupling. Due to the threaded fit with the adjusting screw 7, the threaded sleeve 12 moves upward or downward along the axis of the adjusting screw 7. The drive arm 14 in the side groove 13 of the threaded sleeve 12 swings synchronously with the movement of the threaded sleeve 12.

[0032] The connecting plate 15 hinged to the upper end of the drive arm 14 drives the slider 8 to slide radially along the slide rail 4, so that the arc-shaped clamps 10 on the four mounting seats 9 move synchronously towards the center until the serrated micro-convex contact surface on the inner side of the arc-shaped clamp 10 is tightly fitted with the outer peripheral surface of the gear. At this time, the inner teeth of the arc-shaped clamp 10 mesh with the gear tooth surface to form a mechanical fit. At the same time, the compression spring 19 applies an elastic locking force to the opening block 11 through the limiting plug rod 17 to ensure that the arc-shaped clamp 10 is stably installed.

[0033] Next, the robotic arm 2 moves the cutting tool 3 to the processing position to perform grooving on the gear. During the cutting process, the friction between the sawtooth micro-convex contact surface of the arc-shaped clamp 10 and the gear surface, as well as the uniform circumferential clamping force formed by the symmetrical distribution of the four sets of clamps, effectively resist the radial force and vibration generated by grooving and prevent the gear from loosening and shifting.

[0034] If a gear of a different specification needs to be replaced, simply pull the limiting rod 17 upward to compress the spring 19, causing the limiting rod 17 to disengage from the hole insert 11. Then, the original arc-shaped clamp 10 can be removed. Select the arc-shaped clamp 10 that matches the new gear specification from the placement slot 21 of the storage box 20, insert it into the mounting base 9 slot through the hole insert 11, and the compression spring 19 will automatically push the limiting rod 17 to reset and lock. After the clamp replacement is completed, start the forward and reverse motor 6 again to adjust the clamp spacing, and then position and process the new specification gear.

Claims

1. A fixed grooving device for machining automotive gearbox gears, comprising a machining base (1), characterized in that: The upper surface of the processing base (1) is evenly provided with four slide rails (4), and a slider (8) is slidably installed inside each slide rail (4). A mounting base (9) is fixedly installed on the upper end of each slider (8). An arc-shaped clamp (10) is provided on the inner side of each mounting base (9). A drive cavity (5) is provided inside the processing base (1). A forward and reverse motor (6) is installed at the bottom of the processing base (1). An adjusting screw (7) is rotatably installed in the middle of the drive cavity (5). The output end of the forward and reverse motor (6) is connected to the bottom of the adjusting screw (7) through a coupling. A threaded sleeve (12) is threaded on the surface of the adjusting screw (7). Four grooves (13) are provided on the side of the threaded sleeve (12). A drive arm (14) is hingedly installed inside each groove (13). Two connecting plates (15) are fixedly installed at the bottom of each slider (8). The upper end of the drive arm (14) is hingedly installed on the inner side of each of the two connecting plates (15).

2. The fixed grooving device for machining automotive gearbox gears according to claim 1, characterized in that: The bottom of the slide rail (4) is connected to the interior of the drive cavity (5), a concave plate (16) is fixedly installed on the top of the mounting base (9), and an opening insert (11) is fixedly installed on one side of the arc-shaped clamp (10).

3. The fixed grooving device for machining automotive gearbox gears according to claim 2, characterized in that: The mounting base (9) has a slot on its inner side. The perforated plug (11) is inserted into the mounting base (9) through the slot. The limiting plug (17) is slidably installed in the middle of the concave plate (16).

4. The fixed grooving device for machining automotive gearbox gears according to claim 3, characterized in that: The bottom of the limiting rod (17) passes through the mounting base (9) and is connected to the inside of the opening plug (11). A limiting piece (18) is fixedly installed in the middle of the limiting rod (17).

5. The fixed grooving device for machining automotive gearbox gears according to claim 4, characterized in that: A compression spring (19) is fixedly installed on the upper end of the limiting plate (18). The compression spring (19) is sleeved on the outside of the limiting rod (17) and its top is fixedly installed on the upper inner side of the concave plate (16).

6. The fixed grooving device for machining automotive gearbox gears according to claim 1, characterized in that: The upper end of the processing base (1) is equipped with a robot arm (2), the upper end of the robot arm (2) is equipped with a cutting tool (3), and a storage box (20) is fixedly installed on the side of the processing base (1). The surface of the storage box (20) is provided with multiple placement slots (21).

Images