Oil pump hole processing tool

Abstract

This utility model relates to the field of machining, and more specifically, to a tool for machining oil pump holes. It includes a mounting part and a main body mounted on the mounting part. An intermediate body is located at the center of the end side of the main body, and the intermediate body has at least two first mounting slots. A first cutting edge is detachably connected to each first mounting slot. The main body has at least two second mounting slots, and a second cutting edge is detachably connected to each second mounting slot. The first cutting edge has multiple cutting edges. These multiple cutting edges consist of two parallel radial cutting edges and an axial cutting edge connected to the two parallel radial cutting edges. The second cutting edge has two sets of extended cutting edges. This allows for increasing the accuracy of machining oil pump holes by repeatedly expanding the cutting circular hole.

Description

Technical Field

[0001] This utility model relates to the field of oil pump hole machining, and more specifically to an oil pump hole machining tool. Background Technology

[0002] The oil pump bore is the core functional structure of the oil pump, undertaking key roles such as fluid transportation, sealing, and fitting. Its machining quality directly affects the efficiency, sealing performance, and service life of the oil pump. When machining the oil pump bore, it is generally done through multiple machining operations for precision machining or through a single cutting operation for rough machining. However, neither of these machining methods can accurately and quickly machine the oil pump bore.

[0003] Utility model patent application number CN202221622422.9 discloses a tool for machining oil pump holes, including a tool body. A first chip removal groove and a second chip removal groove are respectively formed at the first and second ends of the tool body. A first cutting edge is installed along the edge of the first chip removal groove, and a second cutting edge and a third cutting edge are installed along the edge of the second chip removal groove. The second and third cutting edges are mounted on the same edge of the second chip removal groove. However, this utility model does not increase the accuracy of machining oil pump holes. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tool for machining oil pump holes, which can increase the accuracy of machining oil pump holes by repeatedly expanding the cutting circular hole.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A tool for machining oil pump holes includes a mounting part and a main body disposed on the mounting part. An intermediate body is disposed in the middle of the end side of the main body. At least two first mounting slots are provided on the intermediate body. A first cutting tool is detachably connected to each first mounting slot. At least two second mounting slots are provided on the main body. A second cutting tool is detachably connected to each second mounting slot. The second cutting tool is provided with two sets of extended cutting edges.

[0007] Furthermore, the first blade is provided with multiple cutting edges.

[0008] Furthermore, the plurality of cutting edges consists of two parallel radial cutting edges and an axial cutting edge connected to the two parallel radial cutting edges.

[0009] Furthermore, the two sets of extended cutting edges include a first cutting edge, a second cutting edge, a third cutting edge, and a fourth cutting edge arranged linearly, with the distance between the outermost edge of the first cutting edge, the second cutting edge, the third cutting edge, and the fourth cutting edge and the axis of the main body increasing sequentially.

[0010] Furthermore, the first cutting edge is provided with two mutually perpendicular cutting edges.

[0011] Furthermore, the second cutting edge is provided with an axial cutting edge and an oblique cutting edge connected to the axial cutting edge and close to the first cutting edge.

[0012] Furthermore, the third cutting edge is provided with two axial cutting edges and two radial cutting edges.

[0013] Furthermore, the fourth cutting edge is provided with an axial cutting edge and an arc-shaped cutting edge connected to the axial cutting edge and close to the third cutting edge.

[0014] Furthermore, the distance between the outermost cutting edge of the first cutting edge and the axis of the main body is greater than the distance between the innermost cutting edge of the second cutting edge and the axis of the main body; the distance between the outermost cutting edge of the second cutting edge and the axis of the main body is greater than the distance between the innermost cutting edge of the third cutting edge and the axis of the main body; and the distance between the outermost cutting edge of the third cutting edge and the axis of the main body is greater than the distance between the innermost cutting edge of the fourth cutting edge and the axis of the main body.

[0015] The beneficial effects of this utility model of a tool for machining oil pump holes are: it can increase the accuracy of machining oil pump holes by expanding the cutting circular hole multiple times; it can also increase the stability of the tool when machining oil pump holes by increasing the number of times the hole is expanded during the expansion of the cutting circular hole. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a front view of the cutting tool;

[0018] Figure 2 This is a cross-sectional view of the cutting tool.

[0019] In the diagram: Intermediate body 11; Main body 12; Mounting part 13;

[0020] First blade 21;

[0021] Second cutting edge 31; First cutting edge 32; Second cutting edge 33; Third cutting edge 34; Fourth cutting edge 35. Detailed Implementation

[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] See details Figure 1 and 2 Detailed examples of reducing tool vibration when precisely machining oil pump holes:

[0024] A tool for machining oil pump holes includes a mounting part 13 and a main body 12 disposed on the mounting part 13. An intermediate body 11 is disposed in the middle of the end side of the main body 12. At least two first mounting grooves are provided on the intermediate body 11, and a first blade 21 is detachably connected to each first mounting groove. At least two second mounting grooves are provided on the main body 12, and a second blade 31 is detachably connected to each second mounting groove.

[0025] The mounting part 13, the main body 12, and the intermediate body 11 are integrally formed to ensure the strength of the cutting tool;

[0026] The first and second mounting slots are designed to machine a flat surface on the cutting tool for mounting the first blade 21 and the second blade 31, and to allow for the discharge of chips after cutting, preventing chip accumulation. The flat surfaces of the first and second mounting slots allow for the stable installation of the first blade 21 and the second blade 31, and also allow for the stable machining of the oil pump hole after installation.

[0027] The intermediate body 11 and the first cutting tool 21 can perform center cutting and positioning during oil pump hole machining, while the second cutting tool 31 can perform oil pump hole machining when rotating around the axis of the main body 12. It can achieve cutting and feeding of the oil pump hole while the main body 12 is feeding in the axial direction. During oil pump hole machining, the rotation of the first cutting tool 21 and the second cutting tool 31 can produce a precise oil pump hole. Furthermore, during oil pump hole machining, the cooperation of the first cutting tool 21 and the second cutting tool 31 reduces tool vibration.

[0028] See details Figure 1 and 2 A detailed embodiment of machining the circular hole in the middle of the oil pump bore;

[0029] The first blade 21 is provided with a plurality of cutting edges. The plurality of cutting edges consists of two parallel radial cutting edges and an axial cutting edge connected to the two parallel radial cutting edges.

[0030] This allows for planar cutting of the oil pump hole by rotating the parallel radial cutting edge while feeding along the axial direction of the main body 12. The axial cutting edge can cut the inner wall of the hole, thus completing the machining of the circular hole and enabling positioning. The cutting edges of the first insert 21 and the second insert 31 coincide along the axial direction of the main body 12. After the first insert 21 cuts the central circular hole, the rotation of the second insert 31 expands the circular hole, thus machining the oil pump hole.

[0031] See details Figure 1 and 2 Detailed examples of machining oil pump holes:

[0032] The second blade 31 is provided with two sets of extended cutting edges. The two sets of extended cutting edges include a first cutting edge 32, a second cutting edge 33, a third cutting edge 34 and a fourth cutting edge 35 arranged linearly. The distance between the outermost edge of the first cutting edge 32, the second cutting edge 33, the third cutting edge 34 and the fourth cutting edge 35 and the axis of the main body 12 increases progressively.

[0033] Thus, the two sets of extended cutting edges on the second insert 31 can perform multi-stage cutting during rotation and feed, and the chips are removed in stages after the cutting is fully completed. The cutting round hole is expanded multiple times to process the oil pump hole. This ensures that when processing the oil pump hole, the round hole is cut out first, and then the hole is expanded multiple times to increase the accuracy of the oil pump hole.

[0034] The two sets of extended cutting edges are spaced apart, which can reduce the vibration of the tool when the tool rotates by increasing the distance between the two sets of extended cutting edges, increase the stability of the tool when cutting the oil pump hole, ensure the accuracy of the machined oil pump hole, and also extend the service life of the first insert 21 and the second insert 31.

[0035] See details Figure 1 and 2 A detailed example of machining the oil pump hole using the first cutting edge 32 is provided below:

[0036] The first cutting edge 32 is provided with two mutually perpendicular cutting edges. The axial cutting edge of the first insert 21 coincides with the radial cutting edge of the first cutting edge 32, so that the initial machining of the oil pump hole is fully performed under the rotation of the first insert 21 and the first cutting edge 32.

[0037] See details Figure 1 and 2 A detailed description of an embodiment in which the second cutting edge 33 further enlarges the cutting oil pump hole:

[0038] The second cutting edge 33 is provided with an axial cutting edge and an oblique cutting edge connected to the axial cutting edge and close to the first cutting edge 32. When the oblique cutting edge performs axial feed while rotating, it can fully expand the circular hole, while the axial cutting edge on the second cutting edge 33 can further fully cut the machined circular hole to further machine the oil pump hole.

[0039] See details Figure 1 and 2 A detailed description of an embodiment where the third cutting edge 34 further enlarges the cutting oil pump hole:

[0040] The third cutting edge 34 is provided with two axial cutting edges and two radial cutting edges.

[0041] Thus, under the rotation of the two axial cutting edges and the two radial cutting edges of the third cutting edge 34, the milling round hole can be expanded twice to perform oil pump hole machining. By expanding the cutting round hole in stages and gradually reducing the thickness of the cutting round hole, the accuracy of cutting the oil pump hole is gradually increased.

[0042] Furthermore, the second cutting edge 33 and the third cutting edge 34 are spaced apart in the axial direction, which can avoid continuous expansion cutting of the circular hole, causing vibration and excessive heat during tool rotation. This ensures sufficient heat dissipation of the tool when cutting the oil pump hole, and also further increases the stability of tool rotation and the accuracy when cutting the oil pump hole.

[0043] See details Figure 2 Detailed description of an embodiment in which the fourth cutting edge 35 further enlarges the cutting oil pump hole:

[0044] The fourth cutting edge 35 is provided with an axial cutting edge and an arc-shaped cutting edge connected to the axial cutting edge and close to the third cutting edge 34.

[0045] Thus, when the fourth cutting edge 35 rotates, it can further expand the cutting circular hole to process the oil pump hole, and the arc-shaped cutting edge of the third cutting edge 34 can also perform rounded corner cutting.

[0046] See details Figure 2 This document details an example of machining an oil pump hole by ensuring continuous cutting of adjacent holes during the process of repeatedly expanding the cutting circular hole:

[0047] The distance between the outermost cutting edge of the first cutting edge 32 and the axis of the main body 12 is greater than the distance between the innermost cutting edge of the second cutting edge 33 and the axis of the main body 12. The distance between the outermost cutting edge of the second cutting edge 33 and the axis of the main body 12 is greater than the distance between the innermost cutting edge of the third cutting edge 34 and the axis of the main body 12. The distance between the outermost cutting edge of the third cutting edge 34 and the axis of the main body 12 is greater than the distance between the innermost cutting edge of the fourth cutting edge 35 and the axis of the main body 12.

[0048] This ensures that when the first cutting edge 32, the second cutting edge 33, the third cutting edge 34, and the fourth cutting edge 35 feed sequentially in the axial direction, they can continuously cut the inner wall of the circular hole, expanding the circular hole to meet the machining requirements of the oil pump hole, and through multiple cuts, a precise oil pump hole can be machined.

[0049] See details Figure 2The following is a detailed description of an embodiment that ensures the stability of the second blade 31 while simultaneously ensuring the stability and strength of the cutting tool during installation:

[0050] The second mounting groove consists of two connected arc-shaped grooves. The distance from the edge of the groove near the intermediate body 11 to the edge of the groove away from the intermediate body 11 from the axis of the main body 12 increases progressively. The cutting diameter of the second blade 31 near the end of the main body 12 is smaller than that of the end away from the main body 12. This means that the mounting position of the second blade 31 near the end of the main body 12 is closer to the axis of the main body 12, while the mounting position of the part away from the end of the main body 12 is further away from the axis of the main body 12. This ensures higher strength and stability of the main body 12 at the mounting positions of the third cutting edge 34 and the fourth cutting edge 35, thus ensuring the long service life of the tool.

[0051] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An oil pump hole processing tool comprising a mounting portion (13) and a main body (12) provided on the mounting portion (13), a middle portion of an end side of the main body (12) is provided with an intermediate body (11), characterized in that: The intermediate body (11) is provided with at least two first mounting slots, and a first blade (21) is detachably connected to each first mounting slot. The main body (12) is provided with at least two second mounting slots, and a second blade (31) is detachably connected to each second mounting slot. The second blade (31) is provided with two sets of extended cutting edges.

2. An oil pump bore machining tool according to claim 1, characterized in that: The first blade (21) is provided with multiple cutting edges.

3. An oil pump bore machining tool according to claim 2, characterised in that: The plurality of cutting edges consists of two parallel radial cutting edges and an axial cutting edge connected to the two parallel radial cutting edges.

4. The oil pump bore machining tool of claim 1, wherein: The two sets of extended cutting edges include a first cutting edge (32), a second cutting edge (33), a third cutting edge (34), and a fourth cutting edge (35) arranged linearly. The distance between the outermost edge of the first cutting edge (32), the second cutting edge (33), the third cutting edge (34), and the fourth cutting edge (35) and the axis of the main body (12) increases one by one.

5. An oil pump bore machining tool according to claim 4, characterised in that: The first cutting edge (32) is provided with two cutting edges that are perpendicular to each other.

6. An oil pump bore machining tool according to claim 5, characterised in that: The second cutting edge (33) is provided with an axial cutting edge and an oblique cutting edge connected to the axial cutting edge and close to the first cutting edge (32).

7. An oil pump bore machining tool according to claim 6, characterised in that: The third cutting edge (34) is provided with two axial cutting edges and two radial cutting edges.

8. An oil pump bore machining tool according to claim 7, characterised in that: The fourth cutting edge (35) is provided with an axial cutting edge and an arc-shaped cutting edge connected to the axial cutting edge and close to the third cutting edge (34).

9. An oil pump bore machining tool according to claim 8, characterised in that: The distance between the outermost cutting edge of the first cutting edge (32) and the axis of the body (12) is greater than the distance between the innermost cutting edge of the second cutting edge (33) and the axis of the body (12). The distance between the outermost cutting edge of the second cutting edge (33) and the axis of the body (12) is greater than the distance between the innermost cutting edge of the third cutting edge (34) and the axis of the body (12). The distance between the outermost cutting edge of the third cutting edge (34) and the axis of the body (12) is greater than the distance between the innermost cutting edge of the fourth cutting edge (35) and the axis of the body (12).

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