Machining tool for crankshaft hole of marine engine base

Abstract

The utility model discloses a machining tool for a crankshaft hole of a marine engine base, which comprises a tool disc main body which is a cross-shaped four-tooth tool. The four-tooth cutters are sequentially a first cutter, a second cutter, a third cutter and a fourth cutter in the clockwise direction. Cutter grooves are formed in the top ends of the first cutter, the second cutter, the third cutter and the fourth cutter and correspond to a first cutter groove, a second cutter groove, a third cutter groove and a fourth cutter groove respectively, and the cutter groove depths of the first cutter groove, the second cutter groove, the third cutter groove and the fourth cutter groove are gradually increased in sequence. The machine base crankshaft hole machining device can machine a machine base crankshaft hole finished product at a time, cutting efficiency and machining efficiency are high, the machining diameter is stable, the cutter diameter does not need to be adjusted many times, and the cutter curing degree is high. Compared with a conventional single-blade boring cutter in the prior art, the cross-shaped four-tooth cutter has the advantages that when the cross-shaped four-tooth cutter is used for machining the crankshaft hole of the engine base, the machining efficiency is greatly improved, and the machining quality is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of engine base crankshaft hole processing, in particular to a processing tool for a marine engine base crankshaft hole. Background Art

[0002] The engine base is an important part of the marine engine, and the engine base crankshaft hole is a key part of the engine, which has a great impact on the overall performance of the engine. Its main function is to support the crankshaft, transmit the torque from the crankshaft handle and output it through the flange, and absorb the axial force and lateral force during the movement of the cylinder piston. The engine base crankshaft hole has the characteristics of large diameter and large processing width, and the processing tool is unique.

[0003] In the prior art, for example, Chinese patent application No. 202122087477.6 “A Cylinder Crankshaft Hole Boring Tool” discloses a boring bar, multiple tools, and multiple injection ports, wherein a liquid supply channel is provided inside the boring bar, and multiple injection ports are provided on the peripheral surface of the boring bar, and the multiple injection ports are all connected to the liquid supply channel, and multiple tools are connected to the boring bar, and each tool corresponds to at least one injection port. It can be seen that the existing crankshaft hole processing tool is a single-edged boring tool. During the study, it was found that the existing single-edged boring tool processing has technical problems such as low cutting efficiency and high processing cost. In order to achieve the processing size, the tool diameter needs to be adjusted during the processing process. The process of adjusting the tool diameter has certain quality risks. If the tool diameter is wrong, the losses caused by quality problems are immeasurable. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a tool for machining a crankshaft hole of a marine engine base. This type of crankshaft hole machining tool is suitable for machining crankshaft holes of various marine engine bases, can improve machining efficiency, perform one-time machining, reduce the steps of adjusting the tool diameter, and reduce quality risks.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A machining tool for a crankshaft hole of a marine engine base, comprising: a tool disc main body, wherein the tool disc main body is a cross-shaped four-tooth tool;

[0007] The four-tooth tools are the first tool, the second tool, the third tool and the fourth tool in a clockwise direction; the tops of the first tool, the second tool, the third tool and the fourth tool are provided with tool grooves, which correspond to the first tool groove, the second tool groove, the third tool groove and the fourth tool groove respectively, and the depths of the first tool groove, the second tool groove, the third tool groove and the fourth tool groove increase in sequence.

[0008] As a further technical solution, adjacent cutters are arranged vertically, and the first cutter, the second cutter, the third cutter and the fourth cutter are designed as an integral whole.

[0009] As a further technical solution, a first turning tool, a second turning tool, a third turning tool and a fourth turning tool are installed in the first tool groove, the second tool groove, the third tool groove and the fourth tool groove respectively according to the matching depth.

[0010] As a further technical solution, a mounting hole is formed on one side of the first tool, the second tool, the third tool and the fourth tool, and the mounting hole is connected to the tool groove.

[0011] As a further technical solution, a connecting component is also included, and the connecting component is welded at the center position of the back side of the cross-shaped four-tooth tool.

[0012] As a further technical solution, the connecting component is a circular structure.

[0013] As a further technical solution, a positioning hole is provided at the center of the connecting component, and a key groove is provided on the outer side of the positioning hole.

[0014] As a further technical solution, a plurality of first connecting holes are symmetrically provided on both sides of the key slot, and the diameters of the first connecting holes increase successively in a direction away from the positioning hole.

[0015] As a further technical solution, it also includes reinforcing ribs. Four reinforcing ribs are provided. Both ends of each reinforcing rib are respectively welded to the top of the adjacent tool. The reinforcing ribs make the cross-shaped four-tooth tool more stable.

[0016] As a further technical solution, a second connecting hole is provided at one end of the first tool, the second tool, the third tool and the fourth tool away from the tool groove.

[0017] One or more technical solutions of the utility model have the following beneficial effects:

[0018] (1) The utility model can process the crankshaft hole of the machine base into a finished product in one process by designing the first groove, the second groove, the third groove and the fourth groove with increasing groove depths in sequence, with high cutting efficiency and processing efficiency, stable processing diameter, no need to adjust the tool diameter multiple times, and high tool curing degree.

[0019] (2) The utility model designs a cross-shaped four-tooth tool having a first tool, a second tool, a third tool and a fourth tool. Compared with the conventional single-edge boring tool in the prior art, the utility model has a greatly improved processing efficiency and more stable processing quality when processing the crankshaft hole of the machine base. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a front view of the cross-shaped four-tooth cutter of the utility model;

[0022] Figure 2 It is a rear view of the cross-shaped four-tooth cutter of the utility model;

[0023] Among them: 1. first knife groove; 2. second knife groove; 3. third knife groove; 4. fourth knife groove; 5. mounting hole; 6. reinforcing rib; 7. positioning hole; 8. first connecting hole 9. keyway. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0025] Embodiment 1

[0026] like Figure 1 As shown, the utility model provides a machining tool for a crankshaft hole of a marine engine base, comprising: a tool disc body. According to the common characteristics of boring and milling and turning and milling, in this embodiment, the tool disc body is a cross-shaped four-tooth tool. The cross-shaped four-tooth tool is a first tool, a second tool, a third tool and a fourth tool in a clockwise direction. The tops of the first tool, the second tool, the third tool and the fourth tool are provided with tool grooves, which correspond to the first tool groove, the second tool groove, the third tool groove and the fourth tool groove respectively, and the tool groove widths of the first tool groove, the second tool groove, the third tool groove and the fourth tool groove are the same, but the tool groove depths are inconsistent, specifically, the tool groove depths of the first tool groove, the second tool groove, the third tool groove and the fourth tool groove increase in sequence. In this embodiment, the first tool groove has a groove depth of 34, the second tool groove has a groove depth of 36, the third tool groove has a groove depth of 38 and the fourth tool groove has a groove depth of 40.

[0027] In this embodiment, if Figure 1 As shown, adjacent tools are arranged vertically (90°), such as the first tool and the second tool are arranged at 90°, the second tool and the third tool are arranged at 90°, the third tool and the fourth tool are arranged at 90°, and the fourth tool and the first tool are arranged at 90°. In order to enhance the stability of the cross-shaped four-tooth tool, in this embodiment, the first tool, the second tool, the third tool and the fourth tool are designed as an integrated whole. The machining tool also includes reinforcing ribs. In this embodiment, four reinforcing ribs are provided, and the two ends of each reinforcing rib are respectively welded to the top of the adjacent tool, such as Figure 1As shown, the two ends of the reinforcing rib are welded at the top positions of the first tool and the second tool respectively. Similarly, reinforcing ribs are welded between the second tool and the third tool, the third tool and the fourth tool, and the fourth tool and the first tool. The reinforcing ribs make the cross-shaped four-tooth tool more stable.

[0028] In this embodiment, the first tool groove, the second tool groove, the third tool groove and the fourth tool groove are respectively installed with the first turning tool, the second turning tool, the third turning tool and the fourth turning tool according to the depth matching. According to the actual processing requirements, the diameter of the first tool can be set to (d-15) mm, the diameter of the second tool can be set to (d-10) mm, the diameter of the third tool can be set to (d-5) mm, and the diameter of the fourth tool can be set to (d) mm. Figure 2 As shown, one side of the first tool, the second tool, the third tool and the fourth tool are provided with tool fastening bolt holes, and the first turning tool, the second turning tool, the third turning tool and the fourth turning tool are respectively fixed in the first tool groove, the second tool groove, the third tool groove and the fourth tool groove by side fixing.

[0029] In this embodiment, the processing tool also includes a connecting component, which is used to connect the processing tool with the SK60 tool handle. The connecting component is at the center of the back of the cross-shaped four-tooth tool. In this embodiment, the connecting component is a circular structure. In this example, the connecting component and the tool are integrated. A positioning hole is opened at the center of the connecting component. The purpose of the positioning hole is to achieve that there is no relative offset between the tool body and the tool handle during the processing, which causes the processing diameter deviation. And a keyway is opened on the outside of the positioning hole. The purpose of opening the keyway is to achieve positioning and increase the torque transmission during the use of the tool after the processing tool is connected to the tool handle. In the specific use process, the tool handle is connected to the equipment machine tool, and the equipment machine tool transmits torque through the tool handle. The tool handle can better transmit the torque to the first turning tool, the second turning tool, the third turning tool and the fourth turning tool through bolt fixing and keyway fixing. And in this embodiment, a plurality of first connecting holes are opened symmetrically on both sides of the keyway, and the aperture of the first connecting hole along the direction away from the positioning hole increases successively. In order to make the connection between the processing tool and the tool handle more tightly, a second connecting hole is provided at the end of the first tool, the second tool, the third tool and the fourth tool away from the tool groove.

[0030] Specific working principle: Under normal circumstances, the crankshaft hole of the marine engine base requires a 15mm allowance for the blank diameter according to the patent drawing. If the final base crankshaft hole is required to be rough-machined to φd. Since the first groove depth is the smallest, the first tool contacts the workpiece first during processing, and the first tool diameter can be set to (d-15) mm, the second tool diameter to (d-10) mm, the third tool diameter to (d-5) mm, and the fourth tool diameter to (d) mm. The tool processing sequence is first tool → second tool → third tool → fourth tool. When the second tool is cutting, the diameter is the diameter after processing by the first tool, and the third and fourth tools are analogous. The processing tool for the crankshaft hole of the marine engine base in this embodiment can process the base crankshaft hole into a finished product in one process, with high cutting efficiency and processing efficiency, and stable processing diameter. There is no need to adjust the tool diameter multiple times, and the tool solidification degree is high.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A machining tool for a crankshaft hole of a marine engine base, characterized in that: include: A tool disc body, wherein the tool disc body is a cross-shaped four-tooth tool; The four-tooth tools are the first tool, the second tool, the third tool and the fourth tool in a clockwise direction; the tops of the first tool, the second tool, the third tool and the fourth tool are provided with tool grooves, which correspond to the first tool groove, the second tool groove, the third tool groove and the fourth tool groove respectively, and the depths of the first tool groove, the second tool groove, the third tool groove and the fourth tool groove increase in sequence.

2. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: Adjacent cutters are arranged vertically, and the first cutter, the second cutter, the third cutter and the fourth cutter are designed as one piece.

3. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: A first turning tool, a second turning tool, a third turning tool and a fourth turning tool are installed in the first tool groove, the second tool groove, the third tool groove and the fourth tool groove respectively according to the depth matching.

4. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: A mounting hole is formed on one side of the first tool, the second tool, the third tool and the fourth tool, and the mounting hole is communicated with the tool groove.

5. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: It also includes a connecting component, which is welded at the center position of the back side of the cross-shaped four-tooth tool.

6. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 5, characterized in that: The connecting component is a circular structure.

7. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 5, characterized in that: A positioning hole is provided at the center of the connecting component, and a key groove is provided on the outer side of the positioning hole.

8. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 7, characterized in that: A plurality of first connection holes are symmetrically provided on both sides of the key slot, and the diameters of the first connection holes increase in sequence along a direction away from the positioning hole.

9. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: It also includes reinforcing ribs, four of which are arranged, and both ends of each reinforcing rib are respectively welded to the top of the adjacent tool, so that the cross-shaped four-tooth tool is more stable through the reinforcing ribs.

10. A machining tool for a crankshaft hole of a marine engine base as claimed in claim 1, characterized in that: A second connecting hole is provided at one end of the first tool, the second tool, the third tool and the fourth tool away from the tool groove.

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