Automatic fixture for milling teeth of engine flywheel

Abstract

The utility model relates to a flywheel tooth milling anchor clamps technical field, concretely relates to a kind of automatic anchor clamps of engine flywheel tooth milling, including base, the self-adapting clamping mechanism includes motor, the inside of the base is rotatably connected with multiple external gear, the inside of the base is fixedly connected with multiple adjusting push rod, the inside of the base is fixedly connected with guide shaft, the inside of the guide shaft is rotatably connected with internal gear, the top inside of the guide shaft is slidably connected with multiple clamping rack, the inside of the base is fixedly connected with support ring;The utility model, by motor drive external gear, in turn drive internal gear, multiple external gear and clamping rack linkage, realize the automatic clamping of quick detach maintenance clamping jaw structure to flywheel, for special-shaped flywheel, corresponding external gear can be driven by adjusting push rod to slide to make it and clamping rack decouple, flexibly adjust clamping state to expand adaptation range, enhance equipment versatility.

Description

Technical Field

[0001] This utility model relates to the field of flywheel milling fixture technology, and in particular to an automatic flywheel milling fixture. Background Technology

[0002] Milling the engine flywheel is primarily for achieving precise power transmission and motion control during engine operation. This includes meshing with the starter gear to start the engine, or using sensors to detect crankshaft position, ensuring the accurate operation of the engine's ignition and fuel injection systems. An engine flywheel milling fixture is a specialized device used to hold the flywheel during milling. This fixture ensures precise positioning and stable clamping of the flywheel during machining, preventing issues such as dimensional deviations and irregular tooth profiles caused by flywheel displacement, thus guaranteeing the quality of the milled teeth.

[0003] A search revealed that patent document CN202591756U discloses an automatic clamping fixture for milling gears on an engine flywheel. The fixture includes an NC rotary table, a base on the top surface of the NC rotary table, a tensioning cylinder on the bottom surface of the NC rotary table, a positioning flange on the base, a mandrel, a pressure plate, and a clamping pin. The NC rotary table, base, and positioning flange all have circular holes for the mandrel to pass through. One end of the mandrel passes through the circular holes on the positioning flange, the base, and the NC rotary table and connects to the tensioning cylinder. The pressure plate has a circular hole in its center for the mandrel to pass through. The pressure plate passes through the circular hole and is positioned above the positioning flange, allowing it to move freely relative to the mandrel. The clamping pin is located on the mandrel and above the pressure plate. This invention features a simple structure, convenient operation, easy installation and disassembly, and low cost, significantly improving production efficiency during operation.

[0004] Among the aforementioned technologies, some automatic milling fixtures for engine flywheels often exhibit significant limitations in their clamping adaptability when dealing with irregularly shaped flywheels. The clamping structures of these fixtures are often designed with fixed specifications, making it difficult to flexibly adjust them according to the irregular shape, special dimensions, or unique structural characteristics of the flywheel. This results in the clamping state being difficult to precisely match with the irregular flywheel. This situation directly limits the fixture's adaptability to different types of flywheels, meaning that a single fixture typically only corresponds to a few standard flywheel models. When machining irregularly shaped or other non-standard flywheel models, either stable clamping is difficult, affecting the accuracy and safety of the milling process; or a dedicated fixture needs to be replaced, increasing equipment investment and changeover time, and reducing production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic clamping fixture for milling engine flywheels, which solves the problem that some automatic clamping fixtures for milling engine flywheels have poor adaptability to clamping irregularly shaped flywheels, are difficult to flexibly adjust the clamping state, and thus have a limited range of adaptability to different types of flywheels.

[0006] To achieve the above objectives, this utility model provides an automatic clamping fixture for milling gears on an engine flywheel, including a base, an adaptive clamping mechanism rotatably connected inside the base, a quick-release maintenance gripper structure slidably connected inside the base, the base having a T-shaped structure, and the top of the base contacting the bottom of the flywheel;

[0007] The adaptive clamping mechanism includes a motor, which is externally fixedly connected to the interior of the base. Multiple external gears are rotatably connected to the interior of the base. The internal parts of the external gears are internally fixedly connected to the exterior of the drive end of the motor. Multiple adjusting push rods are fixedly connected to the interior of the base. The internal parts of the external gears are rotatably connected to the exterior of the drive end of the adjusting push rods. A guide shaft is fixedly connected to the interior of the base. An internal gear is rotatably connected to the interior of the guide shaft. The exterior of the external gears and the interior of the internal gears are coupled together. Multiple clamping racks are slidably connected to the top interior of the guide shaft. A support ring and a locking assembly are fixedly connected to the interior of the base.

[0008] The quick-release maintenance gripper structure includes multiple fixed seats, the outside of which are slidably connected to the inside of the base. The bottom of the multiple fixed seats is fixedly connected to the top of the multiple clamping racks. Each of the multiple fixed seats has a gripper body slidably connected inside. An anti-slip pad is slidably connected inside the opposite side of each gripper body. A locking post is slidably connected inside the fixed seat. An adjusting handle is rotatably connected to the outside of the locking post. A return spring is fixedly connected inside the fixed seat.

[0009] The locking assembly includes a locking push rod, the outer side of which is fixedly connected to the inside of the base. A pressing block is fixedly connected to the driving end of the locking push rod. A locking block is slidably connected inside the base. The bottom of the locking block contacts the top of the pressing block. The outer side of the locking block contacts the inner side of the internal gear. The pressing block near the locking block has a ramp design.

[0010] The base has multiple guide grooves inside, and the quick-release maintenance gripper structure is externally slidably connected to the inside of the guide grooves.

[0011] The base has an adjustment groove inside, the external gear is slidably connected to the inside of the adjustment groove, and the drive end of the adjustment push rod is slidably connected to the inside of the adjustment groove.

[0012] The support ring has a sliding groove inside its top, the guide shaft has a sliding groove inside its top, the clamping rack is slidably connected to the outside of the sliding groove, the base has a limiting groove inside its interior, and the clamping rack is slidably connected to the outside of the limiting groove.

[0013] The anti-slip pad has a T-shaped connecting block on its inner side, the gripper body has a connecting groove inside, the T-shaped connecting block is slidably connected to the inside of the connecting groove, and the gripper body has a locking buckle at its bottom.

[0014] The gripper body has an internal mounting groove, the locking post is externally slidably connected to the inside of the mounting groove, the locking post has an external fixing ring, the return spring is externally fixedly connected to the inside of the mounting groove, one end of the return spring is fixedly connected to the outside of the fixing ring, and the other end of the return spring is fixedly connected to the inner wall of the mounting groove.

[0015] This utility model discloses an automatic clamping fixture for milling engine flywheels. A motor drives an external gear, which in turn drives an internal gear, multiple external gears, and a clamping rack in sequence. This achieves automated clamping of the flywheel by a quick-release maintenance gripper structure, reducing manual intervention and improving work efficiency. For irregularly shaped flywheels, an adjusting push rod can be used to slide the corresponding external gear, disengaging it from the clamping rack. This allows for flexible adjustment of the clamping state, expanding the range of adaptability and enhancing the equipment's versatility.

[0016] This utility model discloses an automatic clamping fixture for milling gears on an engine flywheel. When the quick-release maintenance gripper structure needs maintenance or replacement, simply pull the adjusting handle. The adjusting handle causes the locking pin to slide, thereby disengaging the locking pin from the locking mechanism at the bottom of the gripper body. The gripper body can then be pushed off. After releasing the locking pin, it resets with the help of a return spring. This structure reduces the labor intensity of operators, eliminates the need for complex clamping replacement techniques, and allows for simple switching, thus improving work efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 5 This is the utility model Figure 4 Enlarged structural diagram of a local detail.

[0023] In the diagram: 1. Base; 2. Quick-release maintenance gripper structure; 21. Gripper body; 22. Anti-slip pad; 23. Fixing seat; 24. Locking post; 25. Adjustable handle; 26. Return spring; 3. Adaptive clamping mechanism; 31. Clamping rack; 32. External gear; 33. Guide shaft; 34. Internal gear; 35. Support ring; 36. Adjusting push rod; 37. Motor; 4. Locking assembly; 41. Locking push rod; 42. Pressing block; 43. Locking block. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] Please see Figure 1 , Figure 3 , Figure 4 This utility model provides a technical solution: an automatic clamp for milling gears on an engine flywheel, including a base 1. The base 1 serves as the basic load-bearing structure of the entire automatic clamp and adopts a T-shaped design. The top plane of the base 1 is in close contact with the bottom of the flywheel, providing a stable support reference for the flywheel. An adaptive clamping mechanism 3 is rotatably connected inside the base 1. The adaptive clamping mechanism 3 is the core transmission structure for realizing automated clamping and adapting to irregularly shaped flywheels. A quick-release maintenance claw structure 2 is slidably connected inside the base 1. The quick-release maintenance claw structure 2 is a component that directly contacts the flywheel and achieves clamping. The base 1 adopts a T-shaped structure, and the top of the base 1 contacts the bottom of the flywheel. Multiple guide grooves are opened inside the base 1, and the external part of the quick-release maintenance claw structure 2 is slidably connected inside the guide grooves.

[0026] The adaptive clamping mechanism 3 includes a motor 37, which serves as the main power source for the mechanism. The motor 37 outputs torque to drive the entire transmission system, providing power for the clamping action. The motor 37 is externally fixedly connected to the interior of the base 1. Multiple external gears 32 are rotatably connected inside the base 1. These external gears 32 are distributed within the base 1, with one fixed to the drive end of the motor 37 and the others fixed to the drive end of the adjusting push rod 36. Externally, they are all coupled to the inner side of the internal gear 34. The external gears 32 can slide on the base 1 driven by the adjusting push rod 36, engaging or disengaging with the clamping rack 31. The interior of the external gears 32 is internally fixedly connected to the exterior of the drive end of the motor 37. Multiple adjusting push rods 36 are fixedly connected inside the base 1. When clamping an irregularly shaped flywheel, controlling the extension and retraction of the corresponding adjusting push rod 36 disengages the external gear 32 from the clamping rack 31, stopping the quick-release maintenance gripper structure 2 in that direction and enabling flexible adjustment of the clamping state. The interior of the external gears 32 is internally fixedly connected to the adjusting push rod 36. A guide shaft 33 is fixedly connected to the outside of the drive end of the push rod 36 and the inside of the base 1. The guide shaft 33 provides radial sliding guidance for the clamping rack 31; at the same time, it supports the internal gear 34 and ensures its smooth rotation. The internal gear 34 is rotatably connected inside the guide shaft 33. When the motor 37 drives the main external gear 32 to rotate, the internal gear 34 rotates synchronously and drives the other external gears 32 to move in tandem, ultimately realizing the synchronous opening and closing of multiple clamping racks 31, ensuring uniform clamping force. The outside of the external gear 32 and the inside of the internal gear 34 are connected. The guide shaft 33 is internally coupled with multiple clamping racks 31. These racks 31 slide radially through the external gear 32, causing the gripper body 21 to clamp or release the flywheel. A support ring 35 is fixedly connected internally to the base 1. This support ring 35 engages with the sliding groove of the guide shaft 33, further restricting the movement trajectory of the clamping racks 31 and preventing them from shifting or wobbling during sliding, thus ensuring transmission stability. A locking assembly 4 is also fixedly connected internally to the base 1. The locking assembly 4 is used for… After clamping is completed, the internal gear 34 is locked to prevent it from rotating due to external force and causing the clamping to loosen. An adjustment groove is provided inside the base 1. The external gear 32 is slidably connected to the inside of the adjustment groove. The drive end of the adjustment push rod 36 is slidably connected to the inside of the adjustment groove. A sliding groove is provided inside the top of the support ring 35. A sliding groove is provided inside the top of the guide shaft 33. The external clamping rack 31 is slidably connected to the inside of the sliding groove. A limiting groove is provided inside the base 1. The external clamping rack 31 is slidably connected to the inside of the limiting groove.

[0027] The locking assembly 4 includes a locking push rod 41, which is a linear drive component fixed inside the base 1. The drive end of the locking push rod 41 is connected to the pressing block 42, and the pressing block 42 slides linearly through extension and retraction. The outer side of the locking push rod 41 is fixedly connected to the inside of the base 1, and the driving end of the locking push rod 41 is fixedly connected to the pressing block 42. The top of the pressing block 42 adopts a ramp design and contacts the bottom of the locking block 43. When the locking push rod 41 extends, the pressing block 42 moves towards the locking block 43, and the locking block 43 moves radially by pressing the locking block 43 through the ramp surface. The locking block 43 is slidably connected inside the base 1. When the pressing block 42 presses, the locking block 43 moves upward and engages in the tooth groove of the internal gear 34, thereby locking the internal gear 34. The bottom of the locking block 43 contacts the top of the pressing block 42, and the outer side of the locking block 43 contacts the inner side of the internal gear 34. The side of the pressing block 42 near the locking block 43 adopts a ramp design.

[0028] like Figure 2 , Figure 4 , Figure 5 As shown, the quick-release maintenance gripper structure 2 includes multiple fixing seats 23. The fixing seats 23 can slide synchronously with the gripping rack 31 to realize the opening and closing action of the gripper. The external parts of the multiple fixing seats 23 are slidably connected to the inside of the base 1. The bottom of the multiple fixing seats 23 is fixedly connected to the top of the multiple gripping racks 31. The gripper body 21 is slidably connected inside each of the multiple fixing seats 23. The gripper body 21 directly contacts the gripping component of the flywheel. The locking buckle at the bottom of the gripper body 21 cooperates with the locking pin 24 in the fixing seat 23 to achieve fixation. Anti-slip pads 22 are slidably connected inside the opposite sides of the multiple gripper bodies 21. Friction prevents slippage during flywheel clamping and facilitates individual disassembly and replacement, avoiding the scrapping of the entire gripper due to localized wear. The fixed base 23 has a sliding connection to a locking pin 24, and the locking pin 24 is externally rotatably connected to an adjusting handle 25. The fixed base 23 has a fixed connection to a return spring 26. Under normal conditions, the return spring 26 pushes the locking pin 24 into the lock of the gripper body 21, locking the gripper body 21 with the fixed base 23. Rotating the adjusting handle 25 can drive the locking pin 24 to compress the return spring 26 and disengage from the lock, quickly completing the disassembly or installation of the gripper body 21 and greatly improving maintenance efficiency.

[0029] The anti-slip pad 22 has a T-shaped connecting block on its inner side. The gripper body 21 has a connecting groove inside. The T-shaped connecting block is slidably connected to the inside of the connecting groove. The gripper body 21 has a latch at its bottom. The gripper body 21 has an installation groove inside. The latch post 24 is slidably connected to the inside of the installation groove. The latch post 24 has a fixing ring outside. The return spring 26 is fixedly connected to the inside of the installation groove. One end of the return spring 26 is fixedly connected to the outside of the fixing ring. The other end of the return spring 26 is fixedly connected to the inner wall of the installation groove.

[0030] Working principle: The flywheel to be milled is placed on the top of the base 1. Then, the motor 37 fixed inside the base 1 is started, which drives the external gear 32 fixed to the drive end of the motor 37 to rotate. Then, the internal gear 34 coupled to the external gear 32 rotates. Then, the internal gear 34 drives multiple external gears 32 coupled to the internal gear 34 to rotate synchronously. Then, the multiple external gears 32 drive the clamping rack 31 coupled to the external gears 32 to slide. Through the sliding of the clamping rack 31, the clamping rack is fixed to the clamping rack. The quick-release maintenance gripper structure 2 at the top of 31 clamps the flywheel. At the same time, when the sliding of the clamping rack 31 reaches the limit of the flywheel, the locking push rod 41 fixed inside the base 1 is activated. The locking push rod 41 pushes the pressing block 42 fixed at the drive end of the locking push rod 41 to slide. The sliding of the pressing block 42 compresses the locking block 43, causing the locking block 43 to slide up and down. The locking block 43 locks the internal gear 34, thereby preventing accidental slippage and improving the stability of the device.

[0031] When the quick-release maintenance gripper structure 2 needs maintenance or replacement, simply pull the adjusting handle 25. The adjusting handle 25 causes the locking pin 24 to slide, thereby disengaging the locking pin 24 from the locking mechanism at the bottom of the gripper body 21. This allows the gripper body 21 to be pushed off. Then, the locking pin 24 is released, and it resets with the help of the return spring 26. This structure reduces the labor intensity of operators, eliminates the need for complex gripper replacement techniques, and allows for easy switching, thus improving work efficiency.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An automatic clamping fixture for milling gears on an engine flywheel, comprising a base, characterized in that: The base is internally rotatably connected to an adaptive clamping mechanism, and internally slidably connected to a quick-release maintenance claw structure. The base adopts a T-shaped structure, and the top of the base contacts the bottom of the flywheel. The adaptive clamping mechanism includes a motor, which is externally fixedly connected to the interior of the base. Multiple external gears are rotatably connected to the interior of the base. The internal parts of the external gears are internally fixedly connected to the exterior of the drive end of the motor. Multiple adjusting push rods are fixedly connected to the interior of the base. The internal parts of the external gears are rotatably connected to the exterior of the drive end of the adjusting push rods. A guide shaft is fixedly connected to the interior of the base. An internal gear is rotatably connected to the interior of the guide shaft. The exterior of the external gears and the interior of the internal gears are coupled together. Multiple clamping racks are slidably connected to the top interior of the guide shaft. A support ring and a locking assembly are fixedly connected to the interior of the base.

2. The automatic clamping fixture for milling gears on an engine flywheel according to claim 1, characterized in that: The quick-release maintenance gripper structure includes multiple fixed seats, the outside of which are slidably connected to the inside of the base. The bottom of the multiple fixed seats is fixedly connected to the top of the multiple clamping racks. Each of the multiple fixed seats has a gripper body slidably connected inside. An anti-slip pad is slidably connected inside the opposite side of each gripper body. A locking post is slidably connected inside the fixed seat. An adjusting handle is rotatably connected to the outside of the locking post. A return spring is fixedly connected inside the fixed seat.

3. The automatic clamping fixture for milling gears on an engine flywheel according to claim 1, characterized in that: The locking assembly includes a locking push rod, the outside of which is fixedly connected to the inside of the base. A pressing block is fixedly connected to the driving end of the locking push rod. A locking block is slidably connected inside the base. The bottom of the locking block contacts the top of the pressing block. The outside of the locking block contacts the inside of the internal gear. The pressing block has a ramp design on the side near the locking block.

4. The automatic clamping fixture for milling gears on an engine flywheel according to claim 1, characterized in that: The base has multiple guide grooves inside, and the quick-release maintenance claw structure is externally slidably connected to the inside of the guide grooves.

5. An automatic clamping fixture for milling gears on an engine flywheel according to claim 1, characterized in that: An adjustment groove is provided inside the base, the external gear is slidably connected to the inside of the adjustment groove, and the driving end of the adjustment push rod is slidably connected to the inside of the adjustment groove.

6. An automatic clamping fixture for milling gears on an engine flywheel according to claim 1, characterized in that: The top of the support ring has a sliding groove, the top of the guide shaft has a sliding groove, the outside of the clamping rack is slidably connected to the inside of the sliding groove, the inside of the base has a limiting groove, and the outside of the clamping rack is slidably connected to the inside of the limiting groove.

7. An automatic clamping fixture for milling gears on an engine flywheel according to claim 2, characterized in that: The anti-slip pad has a T-shaped connecting block on its inner side, and the gripper body has a connecting groove inside. The T-shaped connecting block is slidably connected to the inside of the connecting groove, and the gripper body has a locking buckle at its bottom.

8. An automatic clamping fixture for milling gears on an engine flywheel according to claim 2, characterized in that: The gripper body has an internal mounting groove. The locking post is externally slidably connected to the inside of the mounting groove. The locking post has an external fixing ring. The return spring is externally fixedly connected to the inside of the mounting groove. One end of the return spring is fixedly connected to the outside of the fixing ring, and the other end of the return spring is fixedly connected to the inner wall of the mounting groove.

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