Multifunctional tool bit for machining of crankshaft parts

Abstract

The utility model discloses a multifunctional tool bit for crankshaft machining belongs to crankshaft machining tool bit technical field, the device includes the tool bar, the tool bar front end coaxial fixed setting has the tool bit, the tool bit is detachably installed with drilling assembly and cutting assembly. The utility model in using, when the drilling assembly and cutting assembly are integrated on the tool bit, when the processing demand is changed from cutting to drilling, the tool bit does not need to be replaced, only needs other numerical control fixed device cooperation, accurate drive crankshaft piece moves to corresponding drill position, can open drilling operation, the contrary also is, make the tool bit have the effect of free switching drilling and cutting function. This switching mode shortens the process conversion time, improves production efficiency, makes the processing process more smooth and efficient. The tool bit sets up two cutting assemblies, and each group contains the blade and the pressing plate, and two blades participate in work simultaneously, can complete the same cutting task in shorter time, and the processing speed is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft machining tool head technology, and in particular to a multi-functional tool head for crankshaft machining. Background Technology

[0002] The crankshaft is a core component in rotating power machinery such as engines. It typically consists of multiple crankshafts, main journals, connecting rod journals, and other parts. Crankshaft machining is the process of manufacturing and finishing this critical mechanical component. During machining, the blank is first rough-machined to remove excess material and roughly shape it. Then, semi-finishing is performed to further refine the shape and dimensions. Finally, finishing processes such as grinding, polishing, and drilling are used to ensure that the dimensional accuracy, roundness, cylindricity, and surface roughness of each crankshaft journal meet design requirements.

[0003] Crankshaft machining heads are tool heads specifically designed for machining complex parts like crankshafts. Common crankshaft machining heads include turning heads and grinding heads. Turning heads are used for roughing and finishing crankshaft journals and other parts, quickly removing material while maintaining a certain level of precision.

[0004] The shortcomings of the existing technical solutions are as follows: In crankshaft machining, the cutting head is usually mounted on the machine tool and fixed by a CNC lathe or tool turret. In actual machining, if the surface finish of the crankshaft needs to be improved, or if critical parts need to be cut, a suitable cutting head must be used; when machining oil passages and pin holes, drilling bits are required. However, the cutting head replacement process is cumbersome and time-consuming, making it difficult to perform cutting and drilling operations continuously. Frequent interruptions between operations not only increase the overall time cost of machining and reduce machining efficiency, but also affect the overall progress and efficiency of crankshaft production. Utility Model Content

[0005] This utility model provides a multi-functional tool head for crankshaft machining, which can solve the problem in the prior art that the machining process involves cutting and drilling operations, but the tool head cannot meet the production needs, the replacement process is cumbersome, and it is difficult to carry out the cutting and drilling processes continuously.

[0006] A multi-functional cutting head for machining crankshaft components includes a cutting shank, with a cutting head coaxially fixed at the front end of the cutting shank. A drilling assembly and a cutting assembly are detachably mounted on the cutting head. A CNC machine tool can drive the cutting head to rotate, thereby driving the drilling assembly and the cutting assembly to rotate.

[0007] As a further embodiment of this utility model: the cutting assembly is provided in two sets, and the two sets of cutting assemblies are arranged symmetrically along the axis of the cutter head.

[0008] As a further embodiment of this invention: each cutting assembly includes a pressure plate detachably mounted on the cutter head, and a cutting blade that cooperates with the pressure plate.

[0009] As a further embodiment of this utility model: the cutting head is provided with two sets of fixing grooves, and each set of cutting components is fitted into the corresponding fixing groove.

[0010] As a further embodiment of this utility model: each set of fixed grooves is provided with a limiting slope on one side, and each set of pressure plates is provided with a locking slope that cooperates with the limiting slope on one side.

[0011] As a further embodiment of this invention: the drilling assembly includes a drill bit that is detachably installed inside the cutting head.

[0012] As a further embodiment of this utility model: the cutting head shaft is provided with an assembly hole for assembling a drill bit, the cutting head is provided with a threaded hole communicating with the assembly hole, and a bolt for clamping the drill bit is threaded inside the threaded hole.

[0013] As a further embodiment of this utility model: the threaded holes are provided in two sets, and both sets of threaded holes are distributed along the axis of the drill bit.

[0014] As a further embodiment of this utility model: each set of pressure plates is detachably connected to the bottom of the fixing groove by two sets of bolts.

[0015] As a further embodiment of this utility model: the side of each pressure plate near the outer side of the cutter head is adapted to the shape of the side of the cutter head.

[0016] The beneficial effects of this utility model are:

[0017] 1. In use, this utility model integrates a drilling component and a cutting component on the tool head. When the processing requirement changes from cutting to drilling, there is no need to change the tool head. Only other CNC moving devices are needed to precisely move the crankshaft component to the corresponding drill bit position to start the drilling operation; the reverse is also true, enabling the tool head to freely switch between drilling and cutting functions. This switching method shortens the process changeover time, improves production efficiency, and makes the processing process smoother and more efficient.

[0018] 2. In use, this utility model features a cutter head with two sets of cutting components, each set including a pressure plate and cutting blades. Both sets of blades work simultaneously, enabling the same cutting task to be completed in a shorter time, significantly improving processing speed. Furthermore, the two sets of blades are centrally symmetrically arranged along the cutter head's axis, balancing the centrifugal forces during rotation and effectively reducing centrifugal force. This reduces vibration and instability caused by excessive centrifugal force, improving cutting accuracy and extending the service life of individual tools. Attached Figure Description

[0019] Figure 1A schematic diagram of the overall structure of a multi-functional tool head for machining crankshaft parts provided by this utility model;

[0020] Figure 2 A schematic diagram of the overall cross-sectional structure of a multi-functional tool head for machining crankshaft parts provided by this utility model;

[0021] Figure 3 A side view of the structure of a multi-functional tool head for machining crankshaft parts provided by this utility model;

[0022] Figure 4 A schematic diagram of the cross-sectional structure of a second embodiment of a multi-functional cutting head for machining crankshaft parts provided by this utility model;

[0023] Figure 5 This is a top view of the second embodiment of a multi-functional tool head for machining crankshaft parts provided by this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Tool holder; 2. Tool head; 3. Threaded hole; 4. Pressure plate; 5. Blade; 6. Assembly hole; 7. Drill bit; 8. Fixing groove. Detailed Implementation

[0026] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0027] like Figures 1 to 5 As shown in the figure, the present invention provides a multi-functional tool head for crankshaft machining, including a tool holder 1, a tool head 2 coaxially fixed at the front end of the tool holder 1, and a drilling component and a cutting component detachably mounted on the tool head 2. This design allows the tool head 2 to flexibly switch between cutting and drilling functions according to actual machining needs, without the need for frequent replacement of the tool head 2, which greatly improves the continuity and efficiency of machining.

[0028] Specifically, the cutting assembly consists of two sets, which are centrally symmetrically arranged along the axis of the cutter head 2. This symmetrical design helps maintain the balance of the cutter head 2 during cutting, reducing vibration caused by uneven force, thereby improving cutting accuracy and stability. The cutter head 2 has two sets of fixing slots 8, and each set of cutting assemblies is fitted into a corresponding fixing slot 8. Each cutting assembly includes a pressure plate 4 detachably mounted on the cutter head 2, and an insert 5 that cooperates with the pressure plate 4. When installing the cutting assembly, the insert 5 is placed in the fixing slot 8, and then the pressure plate 4 fixes the insert 5 inside the fixing slot 8. This fixing method prevents the cutter head 2 from shaking during cutting, ensuring a smooth cutting process.

[0029] In one specific embodiment, to facilitate the disassembly and replacement of the pressure plates 4, each set of pressure plates 4 is detachably connected to the bottom of the fixing groove 8 by two sets of bolts. When it is necessary to replace the blade 5 or maintain the cutting assembly, simply unscrew the bolts to easily remove the pressure plate 4 and then perform the corresponding operation. This detachable connection method is not only simple to operate, but also ensures the firmness of the connection between the pressure plate 4 and the fixing groove 8, ensuring stability during the cutting process.

[0030] like Figure 3 As shown, to ensure stability during cutting, each set of fixing grooves 8 has a limiting slope on one side, and each set of pressure plates 4 has a locking slope on one side that matches the limiting slope. When the pressure plates 4 are installed with bolts, as the bolts are tightened, the locking slope on one side of the pressure plate 4 will fit tightly against the limiting slope of the fixing groove 8, while the other side of the pressure plate 4 will press firmly against the cutting tool 5. This design ensures that the pressure plates 4 remain stable after installation and will not loosen or shift during cutting, thus guaranteeing the quality and precision of the cutting.

[0031] The drilling assembly includes a drill bit 7 detachably mounted inside the cutter head 2. Specifically, the cutter head 2 has a mounting hole 6 on its axis for mounting the drill bit 7, and a threaded hole 3 communicating with the mounting hole 6. A bolt for clamping the drill bit 7 is threaded inside the threaded hole 3. When installing the drill bit 7, first, the drill bit 7 is inserted into the mounting hole 6 to ensure accurate positioning. Then, the bolt is screwed into the threaded hole 3. As the bolt is gradually screwed in, it penetrates the threaded hole 3 and clamps the drill bit 7, thus securing it. This fixing method ensures the stability of the drill bit 7 during the drilling process.

[0032] In the second embodiment, to further improve the stability of the drill bit 7, two sets of threaded holes 3 are provided, both sets of threaded holes 3 being distributed along the axial direction of the drill bit 7. For example... Figure 3 or Figure 4 As shown, by installing two sets of bolts in the two sets of threaded holes 3 respectively, the drill bit 7 can be more securely fixed. When drilling oil passages or branch holes, the force on the drill bit 7 is more even, thereby reducing damage to the drill bit 7, extending the service life of the drill bit 7, and also improving the quality and accuracy of drilling.

[0033] Furthermore, the side of each pressure plate 4 closest to the outer side of the cutter head 2 is shaped to match the side of the cutter head 2. When the cutter head 2 drives the pressure plate 4 and the blade 5 to rotate, only the blade 5 interacts with the external environment, and the pressure plate 4 does not come into contact with the crankshaft components, thus preventing the pressure plate 4 from scratching the crankshaft components. At the same time, this shape-fitting design also minimizes the centrifugal force when the cutter head 2 rotates, reducing vibration and instability caused by excessive centrifugal force, further improving machining accuracy and stability.

[0034] Working Principle: During cutting operations, two sets of cutting components are centrally symmetrically arranged along the axis of the cutter head 2. The cutting inserts 5 contact the crankshaft component as the cutter head 2 rotates. Because the side of each pressure plate 4 closest to the outer side of the cutter head 2 is matched to the side shape of the cutter head 2, a relatively stable cutting contact surface is formed between the axial side of the cutter head 2 (i.e., the side profile area formed by the overall rotation of the cutter head 2) and the machining area of ​​the crankshaft component during the rotation of the cutter head 2. The cutting inserts 5 then perform the cutting operation on the crankshaft component. The cooperation between the pressure plate 4 and the limiting slope of the fixing groove 8 ensures the stability of the cutting process, prevents the cutter head 2 from wobbling, and ensures cutting accuracy and quality.

[0035] When drilling is required, the drill bit 7 is fitted into the mounting hole 6 on the shaft of the cutter head 2 and secured by bolts in the threaded hole 3. The operator simply aligns the desired drilling position on the crankshaft with the tip of the drill bit 7, and uses other moving devices to move the crankshaft toward the drill bit 7, allowing the drill bit 7 to gradually penetrate the crankshaft, thus completing the drilling operation.

[0036] In the second embodiment, the method of using two sets of threaded holes 3 to install two sets of bolts to fix the drill bit 7 can further enhance the stability of the drill bit 7, reduce vibration during the drilling process, and improve the drilling quality.

[0037] In summary, when cutting is required, the side of the cutter head 2 is in contact with the crankshaft part being processed, and the cutting tool 5 cuts the crankshaft part under the rotation of the cutter head 2; when drilling, it is only necessary to align the drilling position on the crankshaft part with the drill bit 7, and the entire crankshaft part can be moved by other CNC moving devices to allow the drill bit 7 to complete the drilling operation, which improves the continuity of the operation and the processing efficiency.

[0038] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A multi-functional cutting head for machining crankshaft components, comprising a cutting shank (1), wherein a cutting head (2) is coaxially fixedly disposed at the front end of the cutting shank (1), characterized in that, The cutting head (2) is detachably equipped with a drilling assembly and a cutting assembly. The CNC machine tool can drive the cutting head (2) to rotate, thereby driving the drilling assembly and the cutting assembly to rotate.

2. The multi-functional cutting head for machining crankshaft components as described in claim 1, characterized in that, The cutting assembly is provided in two sets, and the two sets of cutting assemblies are arranged symmetrically along the axis of the cutter head (2).

3. The multi-functional cutting head for crankshaft machining as described in claim 2, characterized in that, Each of the cutting components includes a pressure plate (4) detachably mounted on the cutter head (2) and a cutting blade (5) that cooperates with the pressure plate (4).

4. The multi-functional cutting head for machining crankshaft parts as described in claim 3, characterized in that, The cutter head (2) has two sets of fixing grooves (8), and each set of cutting components is fitted into the corresponding fixing groove (8).

5. A multi-functional cutting head for machining crankshaft parts as described in claim 4, characterized in that, Each set of fixed grooves (8) has a limiting slope on one side, and each set of pressure plates (4) has a locking slope that matches the limiting slope on one side.

6. A multi-functional cutting head for machining crankshaft components as described in claim 1, characterized in that, The drilling assembly includes a drill bit (7) that is detachably mounted inside the cutter head (2).

7. A multi-functional cutting head for machining crankshaft parts as described in claim 6, characterized in that, The cutting head (2) has an assembly hole (6) for assembling a drill bit (7) on its axis. The cutting head (2) has a threaded hole (3) that communicates with the assembly hole (6). The threaded hole (3) is threaded with a bolt for clamping the drill bit (7).

8. A multi-functional cutting head for machining crankshaft parts as described in claim 7, characterized in that, The threaded holes (3) are provided in two sets, and both sets of threaded holes (3) are distributed along the axis of the drill bit (7).

9. A multi-functional cutting tool for machining crankshaft parts as described in claim 4, characterized in that, Each set of pressure plates (4) is detachably connected to the bottom of the fixing groove (8) by two sets of bolts.

10. A multi-functional cutting head for machining crankshaft parts as described in claim 9, characterized in that, The side of each pressure plate (4) near the outside of the cutter head (2) is adapted to the shape of the side of the cutter head (2).

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