PCD (Poly Crystal Diamond) reaming and reaming combined cutter

Abstract

The utility model discloses a PCD (Poly Crystal Diamond) reaming and reaming combined cutter which comprises a cutter body, and the cutter body comprises a front guide post, a first blade mounting groove, a second blade mounting groove, a rear guide post and a third blade mounting groove which are integrally formed, and a broaching edge, a reaming edge and a counter sinking edge which are made of PCD materials are sequentially mounted in the first blade mounting groove, the second blade mounting groove and the three-blade mounting groove respectively. Precise guiding is achieved when the cutter rotates at a high speed through the guiding column, resistance generated when the cutter rotates at the high speed is reduced, and the problem that the cutter is prone to being broken is solved; by selecting three blade materials, the problem that the service life of the blade is short is solved, and the working efficiency is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a PCD expansion and countersinking combination tool. Background Technology

[0002] To adapt to the rapid development of the defense and aerospace industry, robots with high drilling power, high clamping rigidity, and high stability are now being used for rivet hole machining in aircraft assembly. When cemented carbide reamers, boring tools, and countersinks are connected to machine tools, the centrifugal force during tool rotation causes significant radial runout, increasing the resistance generated by high-speed rotation and making the tool more prone to breakage during machining. Furthermore, due to the low wear resistance of the alloy cutting edge, the edge becomes dull as the tool wears during high-speed rotation, resulting in a short tool life. This leads to frequent tool replacements during robot hole drilling, reducing work efficiency. Utility Model Content

[0003] To address the issues of easy breakage and short cutting edge life of existing carbide reamer-counter tool combinations, the purpose of this invention is to provide a PCD reamer-counter tool combination that, while maintaining the ease of use of an integrated tool, is less prone to breakage, extends its service life, and thus improves work efficiency.

[0004] The embodiments of this utility model are implemented as follows:

[0005] This utility model provides a PCD (Polycarbon Die) countersinking and reaming combination tool, including a tool body and a tool blank;

[0006] The blade body includes: a front guide post, a first blade mounting groove, a second blade mounting groove, a rear guide post, and a third blade mounting groove;

[0007] The front guide post, the first blade mounting groove, the second blade mounting groove, the rear guide post, and the third blade mounting groove are connected sequentially from the head of the blade body to the tail of the blade body;

[0008] The front guide post, the first blade mounting groove, the second blade mounting groove, the rear guide post, and the third blade mounting groove are integrally formed;

[0009] The blade blank is made of PCD material;

[0010] The cutting blank includes a reaming blade, a boring blade, and a countersinking blade;

[0011] The reaming blade is welded in the first blade mounting groove, the boring blade is welded in the second blade mounting groove, and the countersinking blade is welded in the third blade mounting groove.

[0012] Furthermore, in the PCD countersinking and reaming combination tool of this utility model, the tool body is made of alloy steel.

[0013] Furthermore, in the PCD reamer-counterfeiting combination tool of this utility model, the diameter D1 of the front guide post is 2mm to 15mm and the length L1 is 3mm to 8mm; the diameter D4 of the rear guide post is 2mm to 15mm and the length L4 is 3mm to 8mm.

[0014] Furthermore, in the PCD reamer-counterfeiting combination tool of this utility model, the tool body further includes a connecting body and a threaded connection port; the diameter D6 of the connecting body is 3mm to 15mm, and the total length L6 of the connecting body and the threaded connection port is 5mm to 30mm.

[0015] Furthermore, in the PCD reaming and countersinking combination tool of this utility model, the tool body includes two first cutting edge mounting slots, one of which is welded to a corresponding reaming edge, and the other of which is welded to a corresponding reaming edge; the two first cutting edge mounting slots are symmetrically arranged on the tool body. The tool body also includes two second cutting edge mounting slots, one of which is welded to a corresponding reaming edge, and the other of which is welded to a corresponding reaming edge; the two second cutting edge mounting slots are symmetrically arranged on the tool body. Finally, the tool body includes two third cutting edge mounting slots, one of which is welded to a corresponding countersinking edge, and the other of which is welded to a corresponding countersinking edge; the two third cutting edge mounting slots are symmetrically arranged on the tool body.

[0016] Furthermore, in the PCD reaming and countersinking combination tool of this utility model, the two reaming blades (21) form a cutting diameter D2 of 3mm to 10mm and a cutting length L2 of 2mm to 8mm; the two reaming blades (22) form a cutting diameter D3 of 3mm to 10mm and a cutting length L3 of 2mm to 8mm; the two countersinking blades (23) form a cutting diameter D5 of 4mm to 20mm, and the included angle α is 70° to 180°, with a cutting length L5 of 2mm to 6mm.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The PCD reamer-counterfeiting combination tool provided by this utility model, by setting a front guide post and a rear guide post, accurately guides the tool when it rotates at high speed, so that the tool does not deviate from the center, reducing the resistance generated by high-speed rotation, thus making the tool less prone to breakage; by using PCD material for the cutting edge, PCD has a higher hardness than cemented carbide, the cutting edge is not easy to wear, thereby improving the tool's service life, reducing tool change time, and improving work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A front view of the PCD reamer and countersinking tool assembly provided for an embodiment of this utility model;

[0021] Figure 2 A cross-sectional view of the PCD reamer and countersinking combination tool provided for an embodiment of this utility model;

[0022] Figure 3 Left view of the PCD reamer and countersinker combination tool provided for an embodiment of this utility model;

[0023] In the figure: 1-blade body; 11-front guide post; 12-first cutting edge mounting groove; 13-second cutting edge mounting groove; 14-rear guide post; 15-third cutting edge mounting groove; 16-connector; 17-threaded connection port; 2-blade blank; 21-reaming cutting edge; 22-boring cutting edge; 23-counter-boring cutting edge. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] refer to Figure 1 and Figure 3 As shown, this utility model provides a PCD reamer and countersink combination tool, which is composed of a tool body 1 and a tool blank 2. The tool body 1 is composed of a front guide post 11, a first cutting edge mounting groove 12, a second cutting edge mounting groove 13, a rear guide post 14, a third cutting edge mounting groove 15, a connecting body 16 and a threaded connection port 17 from its head to its tail end. The threaded connection port 17 is a cylinder with external threads, and the tool is connected to the machine tool through the external threads of the threaded connection port 17 when it is in use.

[0031] The front guide post 11 is a polished steel cylinder with a diameter D1 of 2mm to 15mm. The diameter D1 of the front guide post 11 is determined by the diameter of the corresponding hole. The clearance (tolerance) between the front guide post 11 and the corresponding hole is 0.02mm to 0.05mm, allowing for a tight fit. The rear guide post 14 is a polished steel cylinder with a diameter D4 of 2mm to 15mm. The diameter D4 of the rear guide post 14 is determined by the diameter of the corresponding hole. The clearance (tolerance) between the rear guide post 14 and the corresponding hole is 0.02mm to 0.05mm, allowing for a tight fit. The front guide post 11 and the rear guide post 14 can respectively fit tightly with their corresponding holes, thus playing a guiding role when the tool is working, stabilizing the tool's movement direction, reducing the radial runout caused by centrifugal force during tool rotation, thereby reducing the resistance generated by high-speed rotation and making the tool less prone to breakage during machining.

[0032] The blade blank 2 is composed of a reaming blade 21, a boring blade 22 and a countersinking blade 23. The blade blank 2 is made of PCD material, which is polycrystalline diamond material. Its hardness is higher than that of alloy materials, making the blade less prone to wear and thus improving its service life.

[0033] The front guide post 11, the first cutting edge mounting groove 12, the second cutting edge mounting groove 13, the rear guide post 14, and the third cutting edge mounting groove 15 are integrally formed. The reaming cutting edge 21 is welded in the first cutting edge mounting groove 12, the boring cutting edge 22 is welded in the second cutting edge mounting groove 13, and the countersinking cutting edge 23 is welded in the third cutting edge mounting groove 15, thereby fixing the positions of the reaming cutting edge 21, the boring cutting edge 22, and the countersinking cutting edge 23. This eliminates the need for multiple position adjustments during tool use, and reaming, boring, and countersinking can be completed in a single feed, saving time and improving work efficiency.

[0034] refer to Figure 1 and Figure 2 As shown, the cutter body 1 includes two first cutting edge mounting grooves 12, which are symmetrically arranged on the cutter body 1. A reaming cutting edge 21 is welded into one first cutting edge mounting groove 12, and another reaming cutting edge 21 is welded into the other first cutting edge mounting groove 12. The cutter body 1 also includes two second cutting edge mounting grooves 13, which are symmetrically arranged on the cutter body 1. A reaming cutting edge 22 is welded into one second cutting edge mounting groove 13, and another reaming cutting edge 22 is welded into the other second cutting edge mounting groove 13. The cutter body 1 further includes two third cutting edge mounting grooves 15, which are symmetrically arranged on the cutter body 1. A countersinking cutting edge 23 is welded into one third cutting edge mounting groove 15, and another countersinking cutting edge 23 is welded into the other third cutting edge mounting groove 15.

[0035] refer to Figure 1 As shown, the blade body 1 is made of alloy steel (steel containing alloying elements). Compared with cemented carbide (powder metallurgy material), it can improve the toughness of the blade body, making it less prone to breakage.

[0036] refer to Figure 3 As shown, the length L1 of the front guide post 11 is 3mm to 8mm, depending on the thickness of the corresponding material; the length L4 of the rear guide post 14 is 3mm to 8mm; the cutting length L2 formed by the two reaming cutting edges 21 is 2mm to 8mm, the cutting length L3 formed by the two reaming cutting edges 22 is 2mm to 8mm, the cutting length L5 formed by the two countersinking cutting edges 23 is 2mm to 6mm; the total length L6 of the connecting body 16 and the threaded connection port 17 is 5mm to 30mm, depending on the depth of the machine tool mounting interface.

[0037] refer to Figure 3As shown, the diameter D1 of the front guide post 11 is 2mm to 15mm, depending on the diameter of the corresponding hole; the diameter D4 of the rear guide post 14 is 2mm to 15mm, depending on the diameter of the corresponding hole; the cutting diameter D2 formed by the two reaming cutting edges 21 is 3mm to 10mm, the cutting diameter D3 formed by the two reaming cutting edges 22 is 3mm to 10mm, the cutting diameter D5 formed by the two countersinking cutting edges 23 is 4mm to 20mm, and the included angle α formed is 70° to 180°; the diameter D6 of the connecting body 16 is 3mm to 15mm, depending on the diameter of the machine tool mounting interface.

[0038] The working principle of this embodiment:

[0039] When in use, the user connects the cutter body 1 to the machine tool through the threaded connection port 17. When the machine starts working, the cutter body 1 is guided by the front guide post 11, and the reaming blade 21 begins to ream the hole. After the reaming is completed, the boring blade 22 begins to work to make the hole size meet the requirements. After the boring is completed, the rear guide post 14 continues to stabilize the direction of the cutter. Finally, the countersinking blade 23 performs the final chamfering of the hole opening.

[0040] In summary, the PCD reamer-counterfeiting combination tool provided by this utility model solves the problems of tool breakage and service life by setting guide posts and PCD cutting edges on the alloy steel tool body, reducing the frequency of tool replacement. At the same time, the integrated reamer-counterfeiting combination tool also avoids complicated operations, thereby improving production efficiency.

[0041] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. A PCD reamer-counterpart combination tool, characterized in that: include: The blade body (1) and the blade blank (2); The blade body (1) includes: a front guide post (11), a first blade mounting groove (12), a second blade mounting groove (13), a rear guide post (14), and a third blade mounting groove (15). The front guide post (11), the first blade mounting groove (12), the second blade mounting groove (13), the rear guide post (14) and the third blade mounting groove (15) are connected sequentially from the head of the blade body (1) to the tail end of the blade body (1); The front guide post (11), the first blade mounting groove (12), the second blade mounting groove (13), the rear guide post (14), and the third blade mounting groove (15) are integrally formed; The blade body (1) is made of alloy steel; The blade blank (2) is made of PCD material; The blank (2) includes a reaming blade (21), a boring blade (22), and a countersinking blade (23). The enlarging blade (21) is welded in the first blade mounting groove (12), the reaming blade (22) is welded in the second blade mounting groove (13), and the countersinking blade (23) is welded in the third blade mounting groove (15).

2. The PCD reamer and countersinking combination tool according to claim 1, characterized in that: The diameter D1 of the front guide post (11) is 2mm to 15mm and the length L1 is 3mm to 8mm; the diameter D4 of the rear guide post (14) is 2mm to 15mm and the length L4 is 3mm to 8mm.

3. The PCD reamer and countersinking combination tool according to claim 1, characterized in that: The blade body (1) also includes a connector (16) and a threaded connection (17); the diameter D6 of the connector (16) is 3mm to 15mm, and the total length L6 of the connector (16) and the threaded connection (17) is 5mm to 30mm.

4. The PCD reamer and countersinking combination tool according to claim 1, characterized in that: The blade body (1) includes two first blade mounting slots (12), one of the first blade mounting slots (12) is welded to a corresponding hole-expanding blade (21), and another of the first blade mounting slots (12) is welded to a corresponding hole-expanding blade (21); the two first blade mounting slots (12) are symmetrically arranged on the blade body (1); The blade body (1) includes two second blade mounting slots (13), one of the second blade mounting slots (13) is welded to a corresponding reaming blade (22), and another of the second blade mounting slots (13) is welded to a corresponding reaming blade (22); the two second blade mounting slots (13) are symmetrically arranged on the blade body (1); The blade body (1) includes two third blade mounting slots (15), one countersinking blade (23) is welded in one third blade mounting slot (15), and another countersinking blade (23) is welded in the other third blade mounting slot (15); the two third blade mounting slots (15) are symmetrically arranged on the blade body (1).

5. The PCD reamer and countersinking combination tool according to claim 1 or 4, characterized in that: The two enlarging blades (21) form a blade diameter D2 of 3mm to 10mm and a blade length L2 of 2mm to 8mm; The cutting diameter D3 formed by the two reamed cutting edges (22) is 3mm to 10mm, and the cutting length L3 is 2mm to 8mm; The two countersunk cutting edges (23) form a cutting diameter D5 of 4mm to 20mm, an included angle α of 70° to 180°, and a cutting length L5 of 2mm to 6mm.

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