PCD (Poly Crystal Diamond) drilling reamer

Abstract

The utility model discloses a PCD (Poly Crystal Diamond) drilling reamer which comprises a reamer head, a first aperture machining section, a second aperture machining section, a chamfering machining section and a reamer handle from left to right in sequence, the tool bit, the first hole diameter machining section and the second hole diameter machining section form an integrally-formed tool body, chip grooves are formed in the two sides of the tool body, a second PCD blade is arranged on the first hole diameter machining section, a first PCD blade is arranged on the second hole diameter machining section, and an aluminum blade is arranged on one side of the tool bit. According to the PCD drilling reamer, through the arrangement of the aluminum blade, the second PCD blade and the first PCD blade, when the reamer is used for hole diameter machining, compared with a traditional reamer, after a solid hole is drilled through through the aluminum blade, the second PCD blade and the first PCD blade conduct finish machining on the hole along with continuous depth of the reamer, and finally chamfering is conducted through the chamfering machining section; the steps of drilling, hole diameter machining and chamfering machining can be completed at a time through a single tool, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of PCD cutting tool technology, and in particular to PCD drill and reamer. Background Technology

[0002] PCD reamers are reamers that use polycrystalline diamond as the cutting edge material. They possess extremely high hardness and wear resistance, making them suitable for machining non-ferrous metals and non-metallic materials. The advantages of PCD reamers include exceptionally long tool life, stable cutting performance, high machining efficiency, and improved dimensional accuracy and process reliability. These reamers are widely used in the 3C industry, automotive manufacturing, and other fields.

[0003] In daily use, PCD reamers require drilling holes in the workpiece first, and then switching to PCD reamers to finish the holes. When there are many holes to be machined, the operator needs to repeatedly change the tool according to the processing requirements, which is not only troublesome but also affects processing efficiency and leads to a reduction in production efficiency. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a PCD drill and reamer, which has the functions of drilling and hole finishing, and achieves the technical effect of drilling and machining the workpiece without changing the tool.

[0005] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution:

[0006] The technical solution of this utility model is: a PCD drill and reamer, comprising, from left to right, a drill head, a first diameter machining section, a second diameter machining section, a chamfering section, and a shank. The tail end of the drill head is fixedly connected to the front end of the first diameter machining section, the tail end of the first diameter machining section is fixedly connected to the front end of the second diameter machining section, the tail end of the second diameter machining section is fixedly connected to the front end of the chamfering section, the front end of the shank is fixedly connected to the tail end of the chamfering section, and the rear end of the shank has an opening.

[0007] The cutting head, the first aperture machining section, and the second aperture machining section form an integrally formed cutting body. Chip removal grooves are provided on both sides of the cutting body. A second PCD insert is fixedly installed at the front end of the first aperture machining section and on one side of the chip removal groove. A first PCD insert is fixedly installed at the front end of the second aperture machining section and on one side of the chip removal groove. An aluminum insert is detachably provided on the side of the cutting head near the chip removal groove.

[0008] Furthermore, the drill reamer has a cooling chamber inside, and the front end of the cutter head has a first liquid outlet hole that communicates with the front end of the cooling chamber. A second liquid outlet hole is provided on one side of the first diameter machining section and the second diameter machining section and located at the chip removal groove. The inner end of the second liquid outlet hole communicates with the cooling chamber.

[0009] Furthermore, the diameter of the first aperture machining section is larger than the diameter of the cutting head, and the junction between the first aperture machining section and the cutting head is chamfered.

[0010] Furthermore, the diameter of the second aperture processing section is larger than the diameter of the first aperture processing section, and the junction between the front end of the second aperture processing section and the first aperture processing section is chamfered.

[0011] Furthermore, the chamfering section comprises a conical portion and a cylindrical portion, and both sides of the conical portion are provided with chamfering grooves that are adapted to the chip removal groove.

[0012] Furthermore, the cylindrical portion has a plurality of balance screw holes on its surface, which are arranged around the outer ring surface of the cylindrical portion, and each balance screw hole is provided with a balance bolt inside.

[0013] Furthermore, the conical portion is conical in shape, and the front end of the conical portion has the same diameter as the second hole diameter processing section, the cylindrical portion has a larger diameter than the second hole diameter processing section, and the tail end of the conical portion has the same diameter as the cylindrical portion.

[0014] Furthermore, the surface of the tool holder is provided with a connecting groove that is compatible with the mounting base on the machining table.

[0015] Furthermore, a threaded hole is provided through the center of the aluminum blade, and a mounting groove is provided on one side of the blade head at the position of the chip removal groove, so that the fixing bolt can pass through the threaded hole to fix the aluminum blade in the mounting groove on the blade head.

[0016] Furthermore, the two chip removal grooves divide the blade into two sections, which are symmetrically designed.

[0017] The beneficial technical effects of this utility model are as follows: By setting up an aluminum cutting tool, a second PCD cutting tool, and a first PCD cutting tool, the aluminum cutting tool is first installed at the front end of the tool head. Then, the second PCD cutting tool and the first PCD cutting tool are respectively installed on the side of the first hole diameter machining section and the second hole diameter machining section near the chip removal groove. When machining the hole diameter, compared with a traditional reamer, the tool will first drill through the solid hole with the aluminum cutting tool. As the tool continues to go deeper, the second PCD cutting tool and the first PCD cutting tool can perform finishing of the hole. Finally, the chamfering section is used to perform chamfering. The drilling, hole diameter machining, and chamfering steps can be completed in one go with a single tool. There is no need to retract the tool during the machining process, which makes the device reduce the labor intensity of the workers and improve work efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a front view schematic diagram of the structure of this utility model;

[0020] Figure 3 This is a front view sectional diagram of the structure of this utility model.

[0021] The numbers and letters in the diagram represent the names of the corresponding components:

[0022] 1. Cutting head; 2. First diameter machining section; 3. Second diameter machining section; 4. Chamfering section; 41. Conical part; 42. Cylindrical part; 5. Tool holder; 6. First liquid outlet; 7. Drill and reamer; 8. Balance screw hole; 9. First PCD insert; 10. Second PCD insert; 11. Aluminum insert; 12. Chamfering groove; 13. Second liquid outlet; 14. Chip removal groove; 15. Cooling chamber. Detailed Implementation

[0023] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] See appendix Figures 1-3As shown, a PCD drill and reamer includes a drill and reamer 7 consisting of a drill head 1, a first diameter machining section 2, a second diameter machining section 3, a chamfering section 4, and a shank 5, arranged sequentially from left to right. The tail end of the drill head 1 is fixedly connected to the front end of the first diameter machining section 2, the tail end of the first diameter machining section 2 is fixedly connected to the front end of the second diameter machining section 3, the tail end of the second diameter machining section 3 is fixedly connected to the front end of the chamfering section 4, the front end of the shank 5 is fixedly connected to the tail end of the chamfering section 4, and the rear end of the shank 5 has an opening. The surface of the shank 5 has a connecting groove adapted to the mounting base on the machining table. The drill and reamer 7 has a cooling chamber 15 inside. The front end of the drill head 1 has a first liquid outlet 6 that communicates with the front end of the cooling chamber 15. A second liquid outlet 13 is provided on one side of the first diameter machining section 2 and the second diameter machining section 3, located at the chip removal groove 14. The inner end of the second liquid outlet 13 communicates with the cooling chamber 15.

[0025] The cutting tool is assembled with the mounting base on the machining table via the tool holder 5. The rear end of the tool holder 5 has an opening that connects to the cooling chamber 15. During operation, coolant enters the cooling chamber 15 from the opening at the rear end of the tool holder 5 and is discharged through the first liquid outlet 6 and the second liquid outlet 13 to cool the aluminum cutting blade 11, the second PCD cutting blade 10, and the first PCD cutting blade 9, thereby maintaining their temperature and reducing wear during machining.

[0026] The tool body is integrally formed by the cutting head 1, the first diameter machining section 2, and the second diameter machining section 3. The diameter of the first diameter machining section 2 is larger than the diameter of the cutting head 1, and the joint between the first diameter machining section 2 and the cutting head 1 is chamfered. The diameter of the second diameter machining section 3 is larger than the diameter of the first diameter machining section 2, and the joint between the front end of the second diameter machining section 3 and the first diameter machining section 2 is chamfered. The tool body is stepped, and the hole spacing can be gradually increased during machining, allowing for selection of machining according to requirements.

[0027] Chip removal grooves 14 are provided on both sides of the cutter body, and the two chip removal grooves 14 divide the cutter body into two parts. The two cutter bodies are symmetrically designed. A second PCD insert 10 is fixedly installed at the front end of the first diameter machining section 2 and on one side of the chip removal groove 14. A first PCD insert 9 is fixedly installed at the front end of the second diameter machining section 3 and on one side of the chip removal groove 14. An aluminum insert 11 is detachably installed on the side of the cutter head 1 near the chip removal groove 14.

[0028] By setting up an aluminum insert 11, in conjunction with a first PCD insert 9 and a second PCD insert 10, the tool first drills a hole in the workpiece using the aluminum insert 11. After drilling through the solid hole, as the tool continues to penetrate, the second PCD insert 10 and the first PCD insert 9 can perform finishing of the hole. Then, the chamfering section 4 is used to chamfer the hole. During the machining process, there is no need to retract the tool, which reduces the labor intensity of the workers. At the same time, the tool can complete drilling, hole diameter machining and chamfering in one go, improving work efficiency.

[0029] The aluminum blade 11 has a threaded hole through its center, and a mounting groove is provided on one side of the blade head 1 at the position of the chip removal groove 14. The fixing bolt can pass through the threaded hole to fix the aluminum blade 11 in the mounting groove on the blade head 1. The method of fixing the aluminum blade 11 with bolts is simple. When the aluminum blade 11 is damaged, the operator only needs to loosen the bolts to fix the aluminum blade 11, and then disassemble and replace the aluminum blade 11. The structure is simple and the operation is convenient.

[0030] Furthermore, the chamfering section 4 consists of a conical part 41 and a cylindrical part 42. Both sides of the conical part 41 are provided with chamfering grooves 12 that are adapted to the chip removal grooves 14. The surface of the cylindrical part 42 is provided with balance screw holes 8. Multiple balance screw holes 8 are provided and are arranged around the outer ring surface of the cylindrical part 42. Each balance screw hole 8 is provided with a balance bolt inside.

[0031] By setting balancing bolts, dynamic balance can be adjusted according to the offset generated by the tool during rotation, allowing the tool to rotate at high speed.

[0032] Furthermore, the conical portion 41 is conical in shape, and the front end of the conical portion 41 has the same diameter as the second diameter machining section 3. The diameter of the cylindrical portion 42 is larger than that of the second diameter machining section 3, and the tail end of the conical portion 41 has the same diameter as that of the cylindrical portion 42.

[0033] With the conical surface design of the conical part 41, the tool can be chamfered at the end of the hole after it is inserted. During the machining process, the waste chips on the workpiece can be discharged through the chip discharge groove 14 and the second liquid outlet hole 13.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PCD drill reamer, characterized by, Include: In turn from left to right by head (1), first hole processing section (2), second hole processing section (3), chamfering section (4) and shank (5) consisting of drill reamer (7), the tail end of the head (1) and the front end of the first hole processing section (2) are fixedly connected, the tail end of the first hole processing section (2) and the front end of the second hole processing section (3) are fixedly connected, the tail end of the second hole processing section (3) and the front end of the chamfering section (4) are fixedly connected, the front end of the shank (5) and the tail end of the chamfering section (4) are fixedly connected, and the rear end of the shank (5) is provided with an open mouth; The head (1), the first hole processing section (2) and the second hole processing section (3) form an integrally formed blade body, both sides of the blade body are provided with a chip flute (14), the front end of the first hole processing section (2) and one side of the chip flute (14) are fixedly provided with a second PCD blade (10), the front end of the second hole processing section (3) and one side of the chip flute (14) are fixedly provided with a first PCD blade (9), and the side of the head (1) close to the chip flute (14) is detachably provided with an aluminum blade (11).

2. The PCD drill reamer of claim 1, wherein, The inside of the drill reamer (7) is provided with a cooling cavity (15), the front end of the head (1) is provided with a first liquid outlet hole (6) in communication with the front end of the cooling cavity (15), one side of the first hole processing section (2) and the second hole processing section (3) and the position of the chip flute (14) are provided with a second liquid outlet hole (13), and the inner end of the second liquid outlet hole (13) is in communication with the cooling cavity (15).

3. The PCD drill reamer of claim 1, wherein, The diameter of the first hole processing section (2) is greater than the diameter of the head (1), and the joint between the first hole processing section (2) and the head (1) is designed as a chamfer.

4. The PCD drill reamer of claim 3, wherein, The diameter of the second hole processing section (3) is greater than the diameter of the first hole processing section (2), and the joint between the front end of the second hole processing section (3) and the first hole processing section (2) is designed as a chamfer.

5. The PCD drill reamer of claim 1, wherein, The chamfering section (4) comprises a conical portion (41) and a cylindrical portion (42), and both sides of the conical portion (41) are provided with chamfer grooves (12) matched with the chip flutes (14).

6. The PCD drill reamer of claim 5, wherein, The surface of the cylindrical portion (42) is provided with a plurality of balance screw holes (8), and the balance screw holes (8) are arranged on the outer ring surface of the cylindrical portion (42), and each balance screw hole (8) is provided with a balance bolt.

7. The PCD drill reamer of claim 6, wherein, The conical portion (41) is conical, the diameter of the front end of the conical portion (41) is the same as that of the second hole processing section (3), the diameter of the cylindrical portion (42) is greater than that of the second hole processing section (3), and the diameter of the tail end of the conical portion (41) is the same as that of the cylindrical portion (42).

8. The PCD drill reamer of claim 1, wherein, The surface of the shank (5) is provided with a connecting groove matched with the mounting seat on the machining table.

9. The PCD drill reamer of claim 1, wherein, The aluminum blade (11) is provided with a threaded hole at the center, and the cutter head (1) is provided with a mounting groove at one side and at the position of the chip groove (14), and the fixing bolt can pass through the threaded hole to fix the aluminum blade (11) in the mounting groove of the cutter head (1).

10. The PCD drill reamer of claim 1, wherein, The two chip grooves (14) divide the cutter body into two, and the two cutter bodies are designed symmetrically.

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