Adjustable clamp for numerical control turn-milling based on rocker arm machining

Abstract

The utility model relates to the technical field of rocker arm machining clamps, in particular to a rocker arm machining-based numerical control turn-milling adjustable clamp which comprises a bottom frame, a mounting frame is mounted at one end of the top of the bottom frame, and damping rotating shafts are rotationally connected to the two ends of the inner side of the mounting frame. A clamping butt joint mechanism is installed between the two sets of damping rotating shafts, universal wheels are installed at the corners of the bottom of the mounting frame, the clamping butt joint mechanism comprises a clamping assembly, two sets of clamping plates and a replacing assembly, the clamping assembly is used for being matched with the clamping plates to conduct clamping operation, and the replacing assembly is used for replacing the clamping plates. The replacement assembly is used for replacing the clamping plates of the corresponding sizes and shapes according to actual requirements. According to the utility model, the structure is simple, the operation is convenient, dismounting and replacement can be carried out by pressing and pulling by a worker, the worker can conveniently and rapidly replace the clamping plate with the corresponding size and shape according to the actual demand, and the operation part can be closed after installation, so that the phenomenon that the connection part is loosened because the worker mistakenly touches the operation part after the assembly is completed is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rocker arm machining fixture technology, specifically to an adjustable fixture for CNC turning and milling based on rocker arm machining. Background Technology

[0002] The valve rocker arm is an automotive valve component that works in conjunction with the camshaft to open the valves at the appropriate time, completing the intake and exhaust of the engine. It is an important part of the valve control system. The shaft hole is used to assemble the rocker arm shaft, with one intake and one exhaust valve rocker arm installed at each end of the shaft. The valve rocker arm assembly also includes valve tappets. The valve tappets move up and down and rotate, and are subjected to the sliding friction between the tappet and the guide cylinder wall. CNC milling machines are machine tools that use milling cutters to mill workpieces. In the process of machining valve tappets, the workpiece needs to be milled. Furthermore, a fixture is needed to hold and fix the workpiece during milling. However, traditional fixtures cannot flip the workpiece. After milling one end of the workpiece, the operator needs to remove the workpiece from the fixture, manually flip it to the other end, and then re-fix it with the fixture. This is very inconvenient and adds to the operator's workload. Moreover, traditional fixtures are mostly fixed and lack left-right or height adjustment functions, making it impossible to adjust them according to the needs of the machining position.

[0003] To address the aforementioned technical problems, Chinese Patent No. CN216421726U discloses an adjustable fixture for CNC milling and turning based on rocker arm machining. The fixture includes a housing and a frame. A first cylinder and a second cylinder are bolted to both sides of the frame. The output shaft of the first cylinder is bolted to a housing. A rotating rod is rotatably connected to one side of the housing, and a first clamping member is fixedly mounted at the other end of the rotating rod. A drive mechanism and a positioning mechanism are respectively installed inside the housing. The drive mechanism consists of a first motor, a first gear, and a second gear. The first gear is fixed to the output shaft of the first motor, and the second gear is fixedly mounted on the surface of the rotating rod, with the first gear meshing with the second gear. A connecting plate is bolted to the output shaft of the second cylinder.

[0004] While the aforementioned existing technical solution allows workers to easily adjust the position of the workpiece according to processing needs, its first clamping component is fixedly mounted on the rotating rod, while the second clamping component is rotatably connected to the connecting plate. This makes it difficult for workers to quickly replace the first and second clamping components with the corresponding shapes according to the actual size and model of the workpiece being processed. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustable fixture for CNC milling and turning based on rocker arm machining, so as to solve the problem mentioned in the background art, where the first clamping member is fixedly mounted on the rotating rod and the second clamping member is rotatably connected to the connecting plate, making it difficult for operators to quickly replace the first clamping member and the second clamping member with the corresponding shape according to the actual workpiece size and model.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable fixture for CNC turning and milling based on rocker arm machining includes a base frame. A mounting bracket is installed at one top end of the base frame. Damping shafts are rotatably connected to both ends of the inner side of the mounting bracket. A clamping and docking mechanism is installed between the two sets of damping shafts. Universal wheels are installed at the bottom corners of the mounting bracket. The clamping and docking mechanism includes a clamping component, two sets of clamping plates, and a replacement component. The clamping component is used to perform clamping operations in conjunction with the clamping plates. The replacement component is used to replace the clamping plates with clamping plates of corresponding size and shape according to actual needs.

[0008] As a preferred embodiment of this utility model, the clamping assembly includes a movable frame installed at one end of one set of damping rotating shafts, an adjusting cylinder installed on the inner side of the movable frame, a threaded rod rotatably connected to the inner side of the adjusting cylinder, and two sets of adjusting seats sliding on the inner side of the adjusting cylinder, with one end of each of the two sets of adjusting seats being threadedly connected to the threaded rod.

[0009] As a preferred embodiment of this utility model, a first motor is installed at one end of another set of damping shafts, and the other side of the outer wall of the first motor is installed on one side of the movable frame. The drive end of the first motor extends into the inner side of the adjusting cylinder and is fixedly connected to one end of the threaded rod. The threads at both ends of the outer side of the threaded rod are opposite. A second motor is installed on one side of the outer wall of the mounting frame, and the drive end of the second motor extends into the interior of the mounting frame and is fixedly connected to one end of another set of damping shafts. The other end of the other set of damping shafts is fixedly connected to one side of the first motor.

[0010] As a preferred embodiment of this utility model, the replacement component includes an overlapping block installed at one end of the clamping plate, an overlapping groove that is slidably connected to the overlapping block is provided on one side of the adjusting seat, a pressing groove is provided inside the adjusting seat on one side of the overlapping groove, a pressing block that is slidably connected to the pressing groove is installed at one end of the overlapping block, a locking groove is provided inside the adjusting seat on one side of the pressing groove, a locking block is slidably connected to the inner side of the locking groove, and the inner side of the locking groove communicates with the inner side of the pressing groove.

[0011] As a preferred embodiment of this utility model, the locking block has a T-shaped cross-section, the pressure block has an L-shaped cross-section, and the opposite ends of the pressure block and the locking block are provided with mutually fitting inclined surfaces. A first spring is installed between the two ends of one side of the locking block and the inner wall of the locking groove, and a pull rod is installed on one side of the locking block between the two sets of first springs.

[0012] As a preferred embodiment of this utility model, the interior of the adjusting seat is provided with an extension groove on the other side of the locking groove, and a closing groove is provided at the top of the adjusting seat. The inner side of the closing groove is connected to the inner side of the extension groove. A closing plate is slidably connected to the inner side of the closing groove. A synchronization groove is provided on one side of the inner wall of the closing groove. A synchronization block is installed on one side of the closing plate and slidably connected to the synchronization groove. A pull ring is rotatably connected to one end of the pull rod extending to the inner side of the extension groove. A hanging rod is installed on one side of the inner wall of the extension groove. The cross-section of the hanging rod is L-shaped.

[0013] As a preferred embodiment of this utility model, a magnetic block is embedded in one end of the closing plate, an iron block that attracts the magnetic block is embedded in the inner wall of the closing groove above the hanging rod, and a buckle groove is opened on the outer wall of the closing plate on one side of the magnetic block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this utility model, the clamping component works with the clamping plate to perform clamping operations. The replacement component replaces the clamping plate of the corresponding size and shape according to actual needs. The structure is simple and easy to operate. The staff can disassemble and replace the clamping plate by pressing and pulling. It is convenient for the staff to quickly replace the clamping plate of the corresponding size and shape according to actual needs. After installation, the operating parts can also be sealed to prevent the staff from accidentally touching the operating parts after assembly, which would cause the connection to loosen. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial three-dimensional structural diagram of the adjustment seat of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the connection between the adjusting seat and the clamping plate of this utility model.

[0019] In the diagram: 1. Base frame; 2. Mounting frame; 3. Damping shaft; 4. Clamping plate; 5. Movable frame; 6. Adjusting cylinder; 7. Threaded rod; 8. Adjusting seat; 9. First motor; 10. Overlapping block; 11. Pressure block; 12. Locking block; 13. Inclined surface; 14. First spring; 15. Pull rod; 16. Closing plate; 17. Synchronous groove; 18. Pull ring; 19. Magnetic block; 20. Buckle groove; 21. Second motor; 22. Hanging rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example:

[0022] Please see Figures 1-3 This utility model provides a technical solution:

[0023] An adjustable fixture for CNC milling and turning based on rocker arm machining includes a base frame 1. A mounting bracket 2 is mounted on one end of the top of the base frame 1. Damping shafts 3 are rotatably connected to both ends of the inner side of the mounting bracket 2. A clamping and docking mechanism is installed between the two sets of damping shafts 3. Universal wheels are installed at the bottom corners of the mounting bracket 2. The clamping and docking mechanism includes a clamping component, two sets of clamping plates 4, and a replacement component. The clamping component is used to perform clamping operations with the clamping plates 4. The replacement component is used to replace the clamping plates 4 with clamping plates 4 of corresponding size and shape according to actual needs. When using this device, the clamping component can perform clamping operations with the clamping plates 4, and the replacement component can replace the clamping plates 4 of corresponding size and shape according to actual needs. The structure is simple and the operation is convenient. The operator can disassemble and replace the clamping plates 4 with a simple press and pull, which makes it easy for the operator to quickly replace the clamping plates 4 of corresponding size and shape according to actual needs.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the clamping assembly includes a movable frame 5 installed at one end of one set of damping rotating shafts 3. An adjusting cylinder 6 is installed on the inner side of the movable frame 5. A threaded rod 7 is rotatably connected to the inner side of the adjusting cylinder 6. Two sets of adjusting seats 8 slide on the inner side of the adjusting cylinder 6. One end of each set of adjusting seats 8 is threadedly connected to the threaded rod 7. First, the workpiece to be processed is placed between the two sets of clamping plates 4. Then, the first motor 9 is started to drive the threaded rod 7 to rotate, causing the two sets of adjusting seats 8 to slide on the inner side of the adjusting cylinder 6, so that the two sets of clamping plates 4 gradually approach the outer wall of the workpiece for clamping.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, a first motor 9 is installed at one end of another set of damping shafts 3. The other side of the outer wall of the first motor 9 is installed on one side of the movable frame 5. The drive end of the first motor 9 extends into the inner side of the adjusting cylinder 6 and is fixedly connected to one end of the threaded rod 7. The threads at both ends of the outer side of the threaded rod 7 are opposite. A second motor 21 is installed on one side of the outer wall of the mounting frame 2. The drive end of the second motor 21 extends into the interior of the mounting frame 2 and is fixedly connected to one end of another set of damping shafts 3. The other end of the other set of damping shafts 3 is fixedly connected to one side of the first motor 9. Then, when the other side of the workpiece needs to be processed after one side of the workpiece has been processed, the second motor 21 can be started to drive the two sets of damping shafts 3 to rotate, thereby adjusting the position of the movable frame 5 and the workpiece between the two sets of damping shafts 3, thereby performing the processing operation on the other side of the workpiece.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the replacement component includes an overlapping block 10 installed at one end of the clamping plate 4. An overlapping groove is provided on one side of the adjusting seat 8, which is slidably connected to the overlapping block 10. A pressure groove is provided inside the adjusting seat 8 on one side of the overlapping groove. A pressure block 11 is installed at one end of the overlapping block 10, which is slidably connected to the pressure groove. A locking groove is provided inside the adjusting seat 8 on one side of the pressure groove. A locking block 12 is slidably connected to the inner side of the locking groove. The inner side of the locking groove communicates with the inner side of the pressure groove. Further, the clamping plate 4 and the adjusting seat 8 are brought together, so that the overlapping block 10 enters the overlapping groove and the pressure block 11 enters the inner side of the pressure groove. The pressure block 11 and the locking block 12 abut against each other, and their inclined surfaces 13 contact and adhere to each other, forcing the locking block 12 to squeeze the two sets of first springs 14 to retract. After the pressure block 11 is completely pushed into the inner side of the pressure groove, the first spring 14 drives the locking block 12 to pop out and abut against the protruding end of the pressure block 11 to lock.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a magnetic block 19 is embedded in one end of the closing plate 16. An iron block that attracts the magnetic block 19 is embedded in the inner wall of the closing groove above the hanging rod 22. A latching groove 20 is opened on the outer wall of the closing plate 16 on one side of the magnetic block 19. Furthermore, after installation, the latching groove 20 can be fastened to cooperate with the synchronization groove 17 and the synchronization block to drive the closing plate 16 to cover the extension groove, so that the magnetic block 19 and the iron block attract each other to close the pull ring 18 and prevent accidental contact.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the locking block 12 has a T-shaped cross-section, and the pressure block 11 has an L-shaped cross-section. The opposite ends of the pressure block 11 and the locking block 12 have mutually fitting inclined surfaces 13. First springs 14 are installed between both ends of one side of the locking block 12 and the inner wall of the locking groove. A pull rod 15 is installed on one side of the locking block 12 between the two sets of first springs 14. An extension groove is provided inside the adjusting seat 8 on the other side of the locking groove. A closing groove is provided at the top of the adjusting seat 8. The inner side of the closing groove communicates with the inner side of the extension groove. A closing plate 16 is slidably connected to the inner side of the closing groove. A synchronization groove 17 is provided on one side of the inner wall of the closing groove. A synchronizing block is installed on one side of 6 and slidably connected to the synchronizing groove 17. A pull ring 18 is rotatably connected to one end of the pull rod 15 extending to the inside of the extension groove. A hanging rod 22 is installed on one side of the inner wall of the extension groove. The cross section of the hanging rod 22 is L-shaped. Furthermore, when the clamping plate 4 needs to be replaced, the closing plate 16 can be opened again, the pull ring 18 can be fastened and the pull rod 15 can be moved upward, so that the two sets of first springs 14 actively retract, so that the locking block 12 is away from the pressure block 11. Then the pull ring 18 is hung diagonally on the hanging rod 22 for temporary positioning. At this time, the clamping plate 4 can be pulled out and replaced by connecting it to the pressure block 11. After being pulled out, the pull ring 18 can be removed.

[0029] The implementation principle of an adjustable fixture for CNC milling and turning based on rocker arm machining in this application embodiment is as follows: The workpiece to be machined is placed between two sets of clamping plates 4. Then, the first motor 9 is started to drive the threaded rod 7 to rotate, causing the two sets of adjusting seats 8 to slide inside the adjusting cylinder 6, so that the two sets of clamping plates 4 gradually approach the outer wall of the workpiece for clamping. When the other side of the workpiece needs to be machined after one side has been machined, the second motor 21 is started to drive the two sets of damping shafts 3 to rotate, thereby adjusting the position of the movable frame 5 and the workpiece between the two sets of damping shafts 3, so as to perform the machining operation on the other side of the workpiece. The clamping plates 4 are brought into contact with the adjusting seats 8, so that the overlapping block 10 enters the overlapping groove and the pressing block 11 enters the inner side of the pressing groove. The pressing block 11 abuts against the locking block 12, and their inclined surfaces 13 contact each other. The contact forces the locking block 12 to compress the two sets of first springs 14 and retract them. After the pressure block 11 is fully pushed into the pressure groove, the first spring 14 drives the locking block 12 to pop out and abut against the protruding end of the pressure block 11 for locking. After installation, the latching groove 20 can be fastened in conjunction with the synchronous groove 17 and the synchronous block to drive the closing plate 16 to cover the extension groove, allowing the magnetic block 19 to attract the iron block and close the pull ring 18 to prevent accidental contact. When the clamping plate 4 needs to be replaced, the closing plate 16 can be opened again, the pull ring 18 can be fastened and the pull rod 15 can be moved upward, allowing the two sets of first springs 14 to retract actively, so that the locking block 12 is away from the pressure block 11. Then the pull ring 18 can be hung diagonally on the hanging rod 22 for temporary positioning. At this time, the clamping plate 4 can be pulled out and replaced by connecting the pressure block 11. After pulling out, the pull ring 18 can be removed.

[0030] The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable fixture for CNC turning and milling based on rocker arm machining, comprising a base frame (1), characterized in that: A mounting bracket (2) is installed at one end of the top of the base frame (1). Both ends of the inner side of the mounting bracket (2) are rotatably connected to damping shafts (3). A clamping docking mechanism is installed between the two sets of damping shafts (3). Universal wheels are installed at the bottom corners of the mounting bracket (2). The clamping docking mechanism includes a clamping component, two sets of clamping plates (4) and a replacement component. The clamping component is used to cooperate with the clamping plates (4) for clamping operations. The replacement component is used to replace the clamping plates (4) of the corresponding size and shape according to actual needs.

2. The adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 1, characterized in that: The clamping assembly includes a movable frame (5) installed at one end of one of the damping shafts (3). An adjusting cylinder (6) is installed on the inner side of the movable frame (5). A threaded rod (7) is rotatably connected to the inner side of the adjusting cylinder (6). Two sets of adjusting seats (8) slide on the inner side of the adjusting cylinder (6). One end of each of the two sets of adjusting seats (8) is threadedly connected to the threaded rod (7).

3. The adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 2, characterized in that: One end of the other set of damping shafts (3) is equipped with a first motor (9). The other side of the outer wall of the first motor (9) is installed on one side of the movable frame (5). The drive end of the first motor (9) extends to the inside of the adjusting cylinder (6) and is fixedly connected to one end of the threaded rod (7). The threads at both ends of the outer side of the threaded rod (7) are opposite. A second motor (21) is installed on one side of the outer wall of the mounting frame (2). The drive end of the second motor (21) extends to the inside of the mounting frame (2) and is fixedly connected to one end of the other set of damping shafts (3). The other end of the other set of damping shafts (3) is fixedly connected to one side of the first motor (9).

4. The adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 3, characterized in that: The replacement component includes an overlap block (10) installed at one end of the clamping plate (4). An overlap groove is provided on one side of the adjusting seat (8) and is slidably connected to the overlap block (10). A pressure groove is provided inside the adjusting seat (8) on one side of the overlap groove. A pressure block (11) is installed at one end of the overlap block (10) and is slidably connected to the pressure groove. A locking groove is provided inside the adjusting seat (8) on one side of the pressure groove. A locking block (12) is slidably connected to the inner side of the locking groove. The inner side of the locking groove communicates with the inner side of the pressure groove.

5. An adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 4, characterized in that: The locking block (12) has a T-shaped cross section, and the pressure block (11) has an L-shaped cross section. The opposite ends of the pressure block (11) and the locking block (12) are provided with mutually fitting inclined surfaces (13). A first spring (14) is installed between the two ends of one side of the locking block (12) and the inner wall of the locking groove. A pull rod (15) is installed between the two sets of first springs (14) on one side of the locking block (12).

6. The adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 5, characterized in that: The adjustment seat (8) has an extension groove on the other side of the locking groove inside. The top of the adjustment seat (8) has a closing groove. The inner side of the closing groove is connected to the inner side of the extension groove. A closing plate (16) is slidably connected to the inner side of the closing groove. A synchronization groove (17) is opened on one side of the inner wall of the closing groove. A synchronization block that is slidably connected to the synchronization groove (17) is installed on one side of the closing plate (16). A pull ring (18) is rotatably connected to one end of the pull rod (15) that extends to the inner side of the extension groove. A hanging rod (22) is installed on one side of the inner wall of the extension groove. The cross section of the hanging rod (22) is L-shaped.

7. An adjustable fixture for CNC turning and milling based on rocker arm machining according to claim 6, characterized in that: A magnetic block (19) is embedded in one end of the closing plate (16), and an iron block that attracts the magnetic block (19) is embedded in the inner wall of the closing groove above the hanging rod (22). A buckle groove (20) is opened on the outer wall of the closing plate (16) on one side of the magnetic block (19).

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