CN-224209125-U - Layered composite diamond-impregnated bit manufacturing die

Abstract

The application relates to a layered composite diamond-impregnated bit manufacturing die, which belongs to the technical field of diamond bit manufacturing equipment and comprises a bottom die and a core die, wherein an annular accommodating groove is formed between the core die and the bottom die, a plurality of first inserting blocks are arranged, the plurality of first inserting blocks are inserted into the annular accommodating groove at intervals and distributed around the core die, a plurality of second inserting blocks are arranged, the plurality of second inserting blocks are respectively inserted between two adjacent first inserting blocks, and a strip-shaped groove is formed in the end face of each second inserting block, which faces the bottom die. When the second insert block presses the material by utilizing the end where the strip-shaped groove is located, the extrusion force applied to the powder of the working layer is small, the working layer with different density areas can be formed, after sintering, the end face of the second insert block forms different hardness areas, the areas with small hardness are worn out quickly in drilling, grooves are formed, and then edge parts are formed, so that the purpose of improving the drilling pressure and the drilling speed is achieved.

Inventors

• YE HONGYU
• YANG KAIHUA
• XIE TAO
• ZOU SHENGSHU

Assignees

• 武汉万邦激光金刚石工具股份有限公司

Dates

Publication Date

20260508

Application Date

20250513

Claims (10)

1. 1. A layered composite diamond-impregnated bit manufacturing mold, comprising: The bottom die (1), the bottom die (1) is provided with a cavity with one end open; The core mold (2) is arranged in the cavity, and an annular accommodating groove (5) is formed between the core mold (2) and the bottom mold (1); the first inserting blocks (3) are multiple in number, and the first inserting blocks (3) are inserted into the annular accommodating groove (5) at intervals and distributed around the core mold (2); the number of the second inserting blocks (4) is multiple, the second inserting blocks (4) are respectively inserted between two adjacent first inserting blocks (3), and the second inserting blocks (4) face the end face of the bottom die (1) and are provided with strip-shaped grooves (41).
2. 2. The layered composite diamond-impregnated bit manufacturing mold of claim 1, wherein: The strip-shaped groove (41) is an arc-shaped groove, and the circle center of the arc-shaped groove is collinear with the axis of the core mold (2).
3. 3. The layered composite diamond-impregnated bit manufacturing mold of claim 2, wherein: The two ends of the arc-shaped groove extend to the two side walls of the second insertion block (4) respectively and form a lateral opening.
4. 4. A layered composite diamond-impregnated bit manufacturing mold as claimed in any one of claims 1 to 3, wherein: The number of the strip-shaped grooves (41) is two or more, and the strip-shaped grooves (41) are arranged at intervals along the direction away from the core mold (2).
5. 5. The layered composite diamond-impregnated bit manufacturing mold of claim 1, wherein: The second inserting block (4) is in a fan-shaped long strip shape, and one end of the second inserting block (4) provided with the strip-shaped groove (41) is a plane.
6. 6. The layered composite diamond-impregnated bit manufacturing mold according to claim 1 or 5, wherein: The lengths of the first inserting block (3) and the second inserting block (4) are larger than the groove depth of the annular containing groove (5), and the length of the second inserting block (4) is larger than the length of the first inserting block (3).
7. 7. The layered composite diamond-impregnated bit manufacturing mold of claim 1, wherein: gaps exist between the side walls of the first inserting block (3) and the second inserting block (4) and the annular containing groove (5).
8. 8. The layered composite diamond-impregnated bit manufacturing mold of claim 1, wherein: The axis of the bottom die (1) and the axis of the core die (2) are mutually overlapped, and the core die (2) and the bottom die (1) are mutually detachably connected.
9. 9. The layered composite diamond-impregnated bit manufacturing mold according to claim 1 or 8, wherein: The mandrel (2) comprises a large-diameter section (21) and a small-diameter section (22) which are coaxially arranged, and the bottom die (1) is provided with a mounting groove (11) matched with the small-diameter section (22).
10. 10. The layered composite diamond-impregnated bit manufacturing mold of claim 9, wherein: The cavity in the bottom die (1) comprises an annular side wall and a bottom wall connected with the annular side wall, an opening of the mounting groove (11) is positioned on the bottom wall, and the bottom wall is a plane.

Description

Layered composite diamond-impregnated bit manufacturing die Technical Field The application relates to the technical field of diamond bit manufacturing equipment, in particular to a layered composite diamond bit impregnated manufacturing die. Background Along with the development of geological exploration towards deep drilling, the rock in which the drill meets is various, the lithology is complex and changeable, the requirements on the performance and the adaptability of the impregnated diamond drill bit are higher and higher, and the currently developed layered composite impregnated diamond drill bit has good performance, but is complex in structure, and not only requires good die filling quality and high precision, but also requires fast die filling speed. In the related art, the patent with publication number CN102182405A discloses a layered composite diamond drill bit and a manufacturing process thereof, the layered composite diamond drill bit comprises fan-shaped working blocks, water gaps are arranged between the fan-shaped working blocks, the fan-shaped working blocks are layered composite, each of the fan-shaped working blocks comprises a diamond working layer and a non-diamond layer, the diamond working layer and the non-diamond layer are alternately combined, and the diamond working layer and the non-diamond layer are multiple layers. The manufacturing process comprises the steps of adopting a steel mould to perform cold press molding on a sector working block of the drill bit, assembling a plurality of sector working blocks subjected to cold press molding into a graphite mould, and performing hot press molding to manufacture the diamond drill bit. However, in the manufacturing process, multiple diamond working layers and non-diamond layers are alternately and alternately arranged in a steel mould for cold press molding, after a drill bit sector working block is prefabricated, the sector working block is assembled in a graphite mould, and the diamond drill bit is manufactured through hot press molding of an intermediate frequency electric furnace. Because each structural layer size is different, and the width is also different, there is the charge difficulty, influences the problem of charge speed and quality, and in order to guarantee shaping efficiency, still need purchase cold press molding equipment, leads to manufacturing cost high. Disclosure of Invention Aiming at one of the defects or shortcomings of the background technology, the embodiment of the application provides a manufacturing die for a layered composite impregnated diamond drill bit, which can improve die filling speed and die filling quality and reduce manufacturing cost. The embodiment of the application provides a manufacturing die of a layered composite diamond-impregnated bit, which comprises the following components: A bottom die, wherein a cavity with one end open is arranged on the bottom die; The core die is arranged in the cavity, and an annular accommodating groove is formed between the core die and the bottom die; The first inserting blocks are arranged in a plurality, are inserted into the annular accommodating groove at intervals and are distributed around the core mold; The number of the second inserting blocks is multiple, the second inserting blocks are respectively inserted between two adjacent first inserting blocks, and the second inserting blocks face the end face of the bottom die and are provided with strip-shaped grooves. In some embodiments, the bar-shaped groove is an arc-shaped groove, and the center of the arc-shaped groove is collinear with the axis of the core mold. In some embodiments, two ends of the arc-shaped groove extend to two side walls of the second insert block respectively and form a lateral opening. In some embodiments, the number of the bar grooves is two or more, and the bar grooves are spaced apart in a direction away from the core mold. In some embodiments, the second insert block is in a fan-shaped strip shape, and one end of the second insert block, where the strip-shaped groove is arranged, is a plane. In some embodiments, the first and second insert blocks each have a length greater than a groove depth of the annular receiving groove, and the second insert block has a length greater than the first insert block. In some embodiments, a gap exists between the side walls of the first insert block and the second insert block and the annular accommodating groove. In some embodiments, the axis of the bottom die and the axis of the core die are coincident with each other, and the core die and the bottom die are detachably connected to each other. In some embodiments, the mandrel comprises a large diameter section and a small diameter section which are coaxially arranged, and the bottom die is provided with a mounting groove matched with the small diameter section. In some embodiments, the cavity in the bottom die comprises an annular side wall and a bottom wall connected with the annular