Locking clamp for machining cam shaft

Abstract

The utility model discloses a locking clamp for machining a cam shaft. The locking clamp comprises two fixing seats and a clamping device, the rotating disc is rotatably arranged on the side surface of one of the fixed seats; the three-jaw chucks are annularly and uniformly arranged on the side surface of the rotating disc and are used for clamping a shaft; the rotating plate is rotatably arranged on the side surface of the other fixed seat; the fixing structures are arranged in the rotating plate, correspond to the three-jaw chucks in a one-to-one mode and are used for fixing the shafts; and the three driving structures are arranged in the two fixing bases correspondingly, one driving structure is in transmission connection with the rotating disc, the second driving structure is in transmission connection with the rotating plate, and the last driving structure is in transmission connection with one three-jaw chuck through a transmission structure. According to the locking clamp for machining the cam shaft, the cam shaft can be disassembled and assembled while the other cam shaft is machined, so that the machining efficiency is higher, the operation is more convenient, and the locking clamp is more convenient for a user to use.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft processing, in particular to a locking clamp for processing a camshaft. Background Art

[0002] The camshaft is an important component in an internal combustion engine. Its main function is to control the opening and closing of the valves. The main body of the camshaft is a cylindrical rod with a length approximately the same as that of the cylinder group. It is covered with several cams for driving the valves. The camshaft rotates at a very high speed and needs to withstand a large torque. Therefore, the design has strict requirements on the camshaft in terms of material selection and processing technology.

[0003] The function of the camshaft is to control the opening and closing of the intake and exhaust valves. Maintaining regular movement of the valves is directly related to the engine power output and operating characteristics. It is also a key component for the stability of the engine. Therefore, the camshaft occupies a very important position in the design of the entire engine.

[0004] During the processing of the camshaft, the camshaft needs to be clamped by a locking fixture, and then the camshaft is processed using corresponding processing equipment, such as cutting, drilling, grinding and chamfering.

[0005] However, when processing the camshaft, the existing fixture can only be disassembled after a single camshaft is processed, and then a new camshaft can be installed for processing, which is not only inconvenient to operate, but also has low processing efficiency. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a locking fixture for machining a camshaft, aiming to solve the above problems.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A locking fixture for machining a camshaft, comprising:

[0009] two mounting brackets; and

[0010] A rotating disk rotatably disposed on a side surface of one of the fixed seats;

[0011] A plurality of three-jaw chucks are evenly arranged in a ring shape on the side of the rotating disk for clamping the shaft;

[0012] A rotating plate, which is rotatably arranged on a side of another fixed seat;

[0013] A plurality of fixing structures are arranged inside the rotating plate and correspond one to one with the three-jaw chucks for fixing the shaft;

[0014] Three driving structures are respectively arranged inside the two fixed seats, one of which is connected to the rotating disk, the second is connected to the rotating plate, and the last is connected to one of the three-jaw chucks through a transmission structure.

[0015] Preferably, the driving structure comprises:

[0016] A motor, which is fixedly connected to a fixing seat;

[0017] A reducer, which is fixedly connected to the fixing seat, and whose input shaft is fixedly connected to the output shaft of the motor;

[0018] A connecting shaft fixed to the output shaft of the reducer;

[0019] The first bearing is sleeved on the outside of the connecting shaft.

[0020] Preferably, one end of the connecting shaft is fixedly connected to the rotating disk, and the end of the second connecting shaft is fixedly connected to the rotating plate.

[0021] Preferably, the transmission structure comprises:

[0022] A driving tooth, which is fixed to the end of the last connecting shaft;

[0023] A plurality of rotating shafts fixedly connected to the three-jaw chuck;

[0024] A plurality of driven teeth, which are fixedly connected to the rotating shaft and can mesh with the driving teeth;

[0025] The second bearing is sleeved on the outside of the rotating shaft.

[0026] Preferably, the fixing structure comprises:

[0027] A cylinder fixed inside the rotating plate;

[0028] A connecting block fixed to the output end of the cylinder;

[0029] A rotating block is rotatably arranged at one end of the connecting block away from the cylinder;

[0030] A fixed shaft, which is fixedly connected to the connecting block and extends into the interior of the rotating block;

[0031] A third bearing is arranged between the fixed shaft and the rotating block.

[0032] Preferably, the end of the rotating block away from the cylinder is a conical surface.

[0033] Preferably, the rotating shaft and the fixed shaft are coaxial.

[0034] Compared with the prior art, the utility model has the following beneficial effects:

[0035] The utility model provides a locking fixture for processing a camshaft, which can disassemble and assemble a camshaft while processing another camshaft, so that the processing efficiency is higher, the operation is more convenient, and it is more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural schematic diagram of a locking fixture for machining a camshaft according to the utility model;

[0037] Figure 2 for Figure 1 An enlarged schematic diagram of the cross-sectional structure at AA in the middle;

[0038] Figure 3 It is an enlarged schematic diagram of the transmission structure of the utility model;

[0039] Figure 4 It is an enlarged schematic diagram of the structure of the fixed structure of the utility model.

[0040] In the figure: 10 shaft, 20 fixed seat, 30 rotating disk, 40 three-jaw chuck, 50 driving structure, 51 motor, 52 reducer, 53 connecting shaft, 54 first bearing, 60 transmission structure, 61 driving tooth, 62 rotating shaft, 63 driven tooth, 64 second bearing, 70 rotating plate, 80 fixed structure, 81 cylinder, 82 connecting block, 83 rotating block, 84 fixed shaft, 85 third bearing. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the examples of this application, please refer to Figure 1 and 2 A locking fixture for machining a camshaft includes two fixing seats 20, the two fixing seats 20 are rotatably connected to a rotating disk 30 and a rotating plate 70 arranged oppositely through a driving structure 50, the side of the rotating disk 30 is evenly provided with a plurality of three-jaw chucks 40 in an annular shape for clamping the shaft 10, the interior of the rotating plate 70 is evenly provided with a plurality of fixing structures 80 in an annular shape, and corresponds to the three-jaw chucks 40 one by one, and is used to fix the shaft 10, the shaft 10 refers to the camshaft to be machined, and can also be other shafts, without limitation, when in use, the existing processing equipment is arranged behind the fixture of the present application, and then as Figure 1 As shown, the rear of the device ( Figure 1The three-jaw chuck 40 at the right side of the device is connected to the drive structure 50 through the transmission structure 60, and the user disassembles the shaft 10 at the front of the device ( Figure 1 The left side of the machine is used for processing, and the processing is carried out at the rear, so that disassembly and processing can be carried out at the same time, which increases the processing efficiency. After the processing is completed and the different shafts 10 are installed, the driving structure 50 synchronously rotates the rotating disk 30 and the rotating plate 70 to rotate the processed ones out of the processing position, and the installed ones are transferred to the processing position, and then processing and disassembly can be continued, and this reciprocating process is simple to operate and more efficient.

[0043] Further, please refer to 3. The above-mentioned driving structure 50 includes a motor 51 and a reducer 52 fixedly connected to the fixed base 20. The input shaft of the reducer 52 is fixedly connected to the output shaft of the motor 51. The output shaft of the reducer 52 is fixed with a connecting shaft 53. The outer portion of the connecting shaft 53 is sleeved with a first bearing 54. When driving rotation is required, starting the motor 51 can drive the connecting shaft 53 to rotate through the reducer 52. One end of the connecting shaft 53 is fixedly connected to the rotating disk 30, and the end of the second connecting shaft 53 is fixedly connected to the rotating plate 70. Therefore, the corresponding connecting shaft 53 can drive the rotating disk 30 or the rotating plate 70 to rotate. The motor 51 is preferably an existing servo motor, which is connected and controlled in an existing manner.

[0044] To ensure the transmission and replacement of the three-jaw chuck 40, please refer to Figure 1 , 2 3. The transmission structure 60 includes a driving tooth 61 fixed to the end of the last connecting shaft 53. The three-jaw chuck 40 is fixedly connected to a rotating shaft 62. The rotating shaft 62 is fixedly connected to a driven tooth 63 that can mesh with the driving tooth 61. The outer side of the rotating shaft 62 is sleeved with a second bearing 64. When in use, the rotation of the rotating disk 30 can cancel the meshed driving tooth 61 and the driven tooth 63, so that the corresponding driven tooth 63 is rotated out, and then the new driven tooth 63 can be rotated here to mesh with the driving tooth 61. The operation is simple, easy to mesh, and easy to complete the conversion. When driving, the rotation of the corresponding connecting shaft 53 can drive the driving tooth 61 to rotate, thereby driving the corresponding meshing driven tooth 63 to rotate, thereby driving the rotating shaft 62 and the three-jaw chuck 40 to rotate, and finally driving the shaft 10 clamped by it to rotate to meet the corresponding processing requirements.

[0045] For further information, see Figure 2 and 4The fixed structure 80 includes a cylinder 81 fixed to the inside of the rotating plate 70. The cylinder 81 can be an existing cylinder 81 or a hydraulic cylinder. Since the rotating plate 70 needs to rotate, the pipeline of the cylinder 81 or the hydraulic cylinder can be connected through an existing rotating joint as needed. A connecting block 82 is fixed to the output end of the cylinder 81. A rotating block 83 is rotatably provided at one end of the connecting block 82 away from the cylinder 81. The connecting block 82 is fixedly connected to a fixed shaft 84 extending to the inside of the rotating block 83. A third bearing 85 is provided between the fixed shaft 84 and the rotating block 83, and the end of the rotating block 83 away from the cylinder 81 is a conical surface. The rotating shaft 62 and the fixed shaft 84 are coaxial. When installing the shaft 10, the shaft 10 is placed on the three-jaw chuck 40 and fixed in an existing manner (the three-jaw chuck 40 can adopt the existing chuck structure), and then the cylinder 81 is started to drive the connecting block 82 and the rotating block 83 to move, and the rotating block 83 is driven to press against the shaft 10 to complete the installation. Otherwise, it can be disassembled. The operation is simple and convenient for disassembly and assembly.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking fixture for machining a camshaft, characterized in that: include: Two fixed seats; as well as A rotating disk rotatably disposed on a side surface of one of the fixed seats; A plurality of three-jaw chucks are evenly arranged in a ring shape on the side of the rotating disk for clamping the shaft; A rotating plate, which is rotatably arranged on a side of another fixed seat; A plurality of fixing structures are arranged inside the rotating plate and correspond one to one with the three-jaw chucks for fixing the shaft; Three driving structures are respectively arranged inside the two fixed seats, one of which is connected to the rotating disk, the second is connected to the rotating plate, and the last is connected to one of the three-jaw chucks through a transmission structure.

2. A locking fixture for machining a camshaft according to claim 1, characterized in that: The driving structure comprises: A motor, which is fixedly connected to a fixing seat; A reducer, which is fixedly connected to the fixing seat, and whose input shaft is fixedly connected to the output shaft of the motor; A connecting shaft, which is fixed to the output shaft of the reducer; The first bearing is sleeved on the outside of the connecting shaft.

3. A locking fixture for machining a camshaft according to claim 2, characterized in that: One end of the connecting shaft is fixedly connected to the rotating disk, and the other end of the connecting shaft is fixedly connected to the rotating plate.

4. A locking fixture for machining a camshaft according to claim 3, characterized in that: The transmission structure comprises: A driving tooth, which is fixed to the end of the last connecting shaft; A plurality of rotating shafts, which are fixedly connected to the three-jaw chuck; A plurality of driven teeth, which are fixedly connected to the rotating shaft and can mesh with the driving teeth; The second bearing is sleeved on the outside of the rotating shaft.

5. The locking fixture for machining a camshaft according to claim 4, characterized in that: The fixed structure comprises: A cylinder fixed inside the rotating plate; A connecting block fixed to the output end of the cylinder; A rotating block is rotatably arranged at one end of the connecting block away from the cylinder; A fixed shaft, which is fixedly connected to the connecting block and extends into the interior of the rotating block; A third bearing is arranged between the fixed shaft and the rotating block.

6. The locking fixture for machining a camshaft according to claim 5, characterized in that: One end of the rotating block away from the cylinder is a conical surface.

7. The locking fixture for machining a camshaft according to claim 5, characterized in that: The rotating shaft and the fixed shaft are coaxial.

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