A combination coated diamond bullnose

Abstract

The utility model discloses a combined coating diamond round nose tool, including first sword pole, first sword pole one end is equipped with first round nose tool, and first sword pole one end inside is equipped with the insertion slot, and the insertion slot is inserted with second sword pole, second sword pole one end's support column outside is equipped with second round nose tool, and first round nose tool and second round nose tool adopt the size difference, and second sword pole one end is with the insertion slot inside's adjusting screw thread connection, the utility model discloses the first round nose tool and second round nose tool that the outside of sword pole is equipped with, and first round nose tool and second round nose tool adopt the size difference, make with first round nose tool and second round nose tool can carry out the milling machining use processing of different degree, be favorable to improving the efficiency of milling machining.

Description

Technical Field

[0001] This utility model relates to the field of round nose cutter technology, specifically a combined coated diamond round nose cutter. Background Technology

[0002] A round nose end mill is a cutting tool whose traverse radius is greater than 1 / 4 of a circle. Its tip is designed with an R-angle or C-angle structure to increase the cutting edge contact area and reduce localized wear, combining the advantages of ball end mills for surface machining and end mills for planar machining. This tool can be used in an insert or integral configuration and is suitable for roughing molds, finishing planar surfaces, and milling flat areas of large workpieces. However, due to the blind zone at the tip, a secondary roughing process is required to remove any remaining areas. Common models have corner radii ranging from R0.8 to R5, and their machining efficiency is several times that of ball end mills at the same tip height.

[0003] A stepped round nose cutter, as described in prior art (application number 202121983378.X), includes a round nose cutter shaft, a mounting rod that mates with the shaft and is installed in the equipment, and a round nose cutter structure. The round nose cutter structure includes a first cutter bar, a second cutter bar, and a third cutter bar. The top of the first cutter bar is equipped with a cutting head for machining the workpiece. This stepped round nose cutter, by installing the round nose cutter in a stepped, separate manner, facilitates the replacement of the cutting edge position. Furthermore, the cross-shaped spiral arrangement of the cutting edge prevents jamming and avoids chipping. However, the fixed second cutter bar makes it difficult to move and adjust the round nose cutter at one end, affecting the flexibility of use. Summary of the Invention

[0004] The purpose of this invention is to provide a combined coated diamond round nose cutter to solve the problem in the prior art where the second cutter bar is fixed, making it inconvenient to move and adjust the round nose cutter at one end of the second cutter bar, thus affecting the flexibility of use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined coated diamond round nose cutter, comprising a first cutter bar, a first round nose cutter at one end of the first cutter bar, an insertion groove inside the first cutter bar, and a second cutter bar inserted into the insertion groove, a second round nose cutter on the outer side of a support column at one end of the second cutter bar, and the first round nose cutter and the second round nose cutter having different sizes, and one end of the second cutter bar being threadedly connected to an adjusting screw inside the insertion groove.

[0006] Furthermore, the inner wall of the insertion slot is provided with a limiting slide groove, and the outer side of the second tool bar is slidably set with the limiting slide groove through a limiting slider.

[0007] Furthermore, the second tool bar has a through hole inside, the outer diameter of which is larger than the outer diameter of the adjusting screw, and one end of the adjusting screw has a limiting end plate.

[0008] Furthermore, one end of the adjusting screw is rotatably mounted inside the insertion slot via a bearing, and one end of the adjusting screw is provided with an adjusting nut, the internal thread of which is provided with a locking bolt.

[0009] Furthermore, the locking bolt and adjusting nut are disposed in a groove at one end of the first tool holder, and both the adjusting nut and the locking bolt have a slot at one end.

[0010] Furthermore, a damping pad is provided at one end of the locking bolt, and the damping pad is made of rough-surfaced gray cast iron.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a first round nose cutter and a second round nose cutter located on the outer side of the tool holder. The first round nose cutter and the second round nose cutter are of different sizes, allowing for milling operations of different degrees, which helps to improve the efficiency of milling operations.

[0012] This invention connects one end of the second tool bar to an adjusting screw inside the insertion slot via a threaded connection. The adjusting screw is rotatably mounted inside the insertion slot via a bearing, allowing the second tool bar to be extended and retracted by rotating the adjusting screw. This satisfies the milling needs of the second tool bar with different extension lengths. Furthermore, the second tool bar and the second round nose cutter can be completely retracted into the insertion slot when not in use, improving the flexibility of use.

[0013] This invention features a limiting groove on the inner wall of the insertion slot, and a limiting slider on the outer side of the second tool bar that slides along the limiting groove. The limiting groove and the limiting slider can guide the movement of the second tool bar, thereby improving the stability of the movement adjustment. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the first tool holder structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the first tool holder of this utility model.

[0015] In the diagram: 1. First cutter bar; 2. First round nose cutter; 3. Support column; 4. Second round nose cutter; 5. Second cutter bar; 6. Groove; 7. Insertion groove; 8. Limiting slider; 9. Limiting slide groove; 10. Adjusting screw; 11. Bearing; 12. Limiting end plate; 13. Through hole; 14. Adjusting nut; 15. Slotted groove; 16. Locking bolt; 17. Damping pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, a combined coated diamond round nose cutter includes a first cutter bar 1, a first round nose cutter 2 at one end of the first cutter bar 1, an insertion groove 7 inside the first cutter bar 1, and a second cutter bar 5 inserted into the insertion groove 7. A second round nose cutter 4 is provided on the outside of the support column 3 at one end of the second cutter bar 5. The first round nose cutter 2 and the second round nose cutter 4 are of different sizes, so that the first round nose cutter 2 and the second round nose cutter 4 can be used for milling operations of different degrees, which is beneficial to improving the efficiency of milling operations. One end of the second cutter bar 5 is threadedly connected to an adjusting screw 10 inside the insertion groove 7. The second cutter bar 5 has a through hole 13 inside, the outer diameter of the through hole 13 is larger than the outer diameter of the adjusting screw 10. One end of the adjusting screw 10 is provided with a limiting end plate 12, so that the second cutter bar 5 can be adjusted by rotating the adjusting screw 10 to extend and retract, thereby meeting the milling operations of the second cutter bar 5 with different extension lengths. Moreover, the second cutter bar 5 and the second round nose cutter 4 can be completely retracted into the insertion groove 7 when not in use, which improves the flexibility of use.

[0018] like Figure 2 and Figure 3 As shown, in order to improve the stability of the movement adjustment of the second tool bar 5, a limiting groove 9 is also provided on the inner wall of the insertion groove 7. The outer side of the second tool bar 5 is slidably set with the limiting groove 9 through the limiting slider 8. The limiting groove 9 and the limiting slider 8 can be used to guide the movement adjustment of the second tool bar 5, which is beneficial to improving the stability of the movement adjustment of the second tool bar 5.

[0019] like Figure 2 and Figure 3As shown, in order to rotate the adjusting screw 10 and the locking bolt 16, one end of the adjusting screw 10 is rotatably mounted inside the insertion slot 7 via a bearing 11. One end of the adjusting screw 10 is provided with an adjusting nut 14, and the internal thread of the adjusting nut 14 is provided with a locking bolt 16. The locking bolt 16 and the adjusting nut 14 are located in the groove 6 at one end of the first tool bar 1. One end of both the adjusting nut 14 and the locking bolt 16 is provided with a slotted groove 15, which facilitates the rotation and adjustment of the adjusting screw 10 and the locking bolt 16 with a screwdriver. The locking bolt 16 is used to lock the adjusting screw 10 after rotation and adjustment.

[0020] like Figure 2 As shown, a damping pad 17 is also provided at one end of the locking bolt 16. The damping pad 17 is made of rough gray cast iron, which increases the anti-slip properties of one end of the locking bolt 16 and facilitates the improvement of the stability of one end of the locking bolt 16 pressed and fixed to the inner wall of the groove 6.

[0021] The working principle and usage process of this utility model are as follows: During use, the first round nose cutter 2 and the second round nose cutter 4, located on the outer side of the tool holder, are of different sizes, allowing for milling operations of varying degrees, thus improving milling efficiency. Furthermore, one end of the second tool holder 5 is threadedly connected to an adjusting screw 10 inside the insertion slot 7. The adjusting screw 10 is rotatably mounted inside the insertion slot 7 via a bearing 11, allowing for the extension and retraction of the second tool holder 5 by rotating the adjusting screw 10. This accommodates milling operations with different extension lengths of the second tool holder 5. When not in use, the second tool holder 5 and the second round nose cutter 4 can be completely retracted into the insertion slot 7, enhancing operational flexibility. Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined coated diamond round nose cutter, comprising a first cutter shank (1), characterized in that: The first cutter bar (1) has a first round nose cutter (2) at one end, and a insertion groove (7) is provided inside the first cutter bar (1). A second cutter bar (5) is inserted into the insertion groove (7). A second round nose cutter (4) is provided on the outer side of one end of the second cutter bar (5). The first round nose cutter (2) and the second round nose cutter (4) are of different sizes. One end of the second cutter bar (5) is threadedly connected to the adjusting screw (10) inside the insertion groove (7).

2. The combined coated diamond round nose cutter according to claim 1, characterized in that: The inner wall of the insertion slot (7) is provided with a limiting slide groove (9), and the outer side of the second knife bar (5) is slidably set with the limiting slide groove (9) through the limiting slider (8).

3. The combined coated diamond round nose cutter according to claim 2, characterized in that: The second cutter bar (5) has a through hole (13) inside, and the outer diameter of the through hole (13) is larger than the outer diameter of the adjusting screw (10).

4. The combined coated diamond round nose cutter according to claim 3, characterized in that: One end of the adjusting screw (10) is rotatably mounted inside the insertion slot (7) via a bearing (11), and one end of the adjusting screw (10) is provided with an adjusting nut (14), and the adjusting nut (14) is provided with a locking bolt (16) on its internal thread.

5. A combined coated diamond round nose cutter according to claim 4, characterized in that: The locking bolt (16) and adjusting nut (14) are located in the groove (6) at one end of the first tool bar (1), and one end of the adjusting nut (14) and locking bolt (16) is provided with a slot (15).

6. A combined coated diamond round nose cutter according to claim 4, characterized in that: One end of the locking bolt (16) is provided with a damping pad (17), which is made of gray cast iron with a rough surface.

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