Novel high adhesion strength diamond engineering thin wall drilling bit and manufacturing method
A technology that combines strength and manufacturing methods. It is applied to drill bits, earthwork drilling, drilling equipment, etc. It can solve problems such as low welding strength, shedding of the cutter head, and easy deformation of the cutter head, so as to achieve the effect of improving strength and reliability.
Inactive Publication Date: 2012-10-03
石家庄泰威科技有限公司
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Problems solved by technology
[0002] The structure of the current diamond thin-walled drill bit is to upset the thin-walled tube at the front end of the intermediate tube, and then use the brazing process to weld the cutter head and the intermediate tube of the drill bit together. Due to the characteristics of the brazing process itself, the The welding strength is very low, the cutter head is easily deformed during use and even the cutter head falls off from the joint surface
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Embodiment Construction
[0038] The present invention will be further described below in conjunction with the accompanying drawings.
[0039] Preferred embodiments of the present invention such as figure 1 As shown, a new high-bonding strength diamond engineering thin-walled drill bit includes: a drill head 1, a connecting piece 2 and a drill tail 3. Among them, such as figure 2 , image 3 As shown, the drill bit 1 includes a cylindrical body 1.3, and is fixedly connected to the top end surface of the cylindrical body 1.3 with a cutter block 1.1 and a nozzle 1.5 distributed along the circumferential direction, and the cutter block 1.1 is arranged on the A protrusion on the end surface and extending in the axial direction forms a nozzle 1.5 between two adjacent cutter blocks; a first connecting mechanism 1.4 is provided at the bottom of the cutter head to connect one end of the connecting piece 2 . Such as Figure 4 , Figure 5 As shown, the top end surface of the cylindrical body 1.3 of the dril...
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The invention provides a high adhesion strength diamond engineering thin wall drilling bit and a manufacturing method. The drilling bit comprises a drilling head, a drilling tail and a connecting piece, wherein the drilling head comprises a cylindrical body and a knife block arranged on the end surface of the top of the cylindrical body, and continuous or intermittent ladder-shaped projections are arranged on the end surface of the top of the cylindrical body; one end of the knife block is provided with depressions matched with the ladder-shaped projections, and the knife block is sleeved and welded on the ladder-shaped projections; and one end of the drilling tail is provided with a second connecting mechanism to connect the other end of the connecting piece. The cylindrical body and the knife block are connected into a whole by a high temperature and high pressure method, and the method can improve the reliability of the connection of the knife block and the cylindrical body.
Description
technical field [0001] The invention relates to a novel high bonding strength diamond engineering thin-wall drill bit and a manufacturing method thereof. Background technique [0002] The structure of the current diamond thin-walled drill bit is to upset the thin-walled tube at the front end of the intermediate tube, and then use the brazing process to weld the cutter head and the intermediate tube of the drill bit together. Due to the characteristics of the brazing process itself, the The welding strength is very low, and the cutter head is easily deformed and even the cutter head falls off from the joint surface during use. Contents of the invention [0003] Aiming at the defects and deficiencies in the prior art, the object of the present invention is to propose a new type of high bonding strength diamond engineering thin-wall drill bit and its manufacturing method, which can improve the connection strength of the bit and increase the service life of the drill bit. [...
Claims
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IPC IPC(8): E21B10/46
Inventor 苗健金礼国冯振联张爱兵李锋高学玉王伟张展飞
Owner 石家庄泰威科技有限公司