Drilling integrated tool of double-tapered angle laminated structure with variable spiral groove

Abstract

An integrated hole-making tool with double-cone-angle lamination structure with variable helical grooves, including a drilling part, a reaming part, a spot facing part and a tool handle, and a space between the drilling part and the reaming part, as well as the reaming part and the spot facing part There is a transition part between them; the drilling part includes a double taper drill tip and a helical groove, the double taper drill tip contains two main cutting edges, and the helical groove is two extending to the transition part between the drilling part and the reaming part. Right-handed helical groove; reaming part has four helical peripheral edges, including four main cutting edges and corresponding four left-handed helical grooves extending to the transition on both sides; spot facing part includes three main cutting edges and three extending to the handle Right-handed spiral groove. The tool integrates the structure of drilling, reaming, and spot-sinking into one tool, and completes the drilling, reaming, and spot-sinking of laminated materials at one time, ensuring the accuracy and coaxiality of the hole making, avoiding the phenomenon of tool wrapping, and preventing chips Damage to the machined surface can effectively break chips and promote chip removal, ensuring tool durability, hole making quality and processing efficiency.

Description

Technical field [0001] The invention relates to a drilling, reaming, and countersinking integrated tool suitable for precision hole making of materials with difficult-to-machine laminated structures, which can ensure the hole making process of materials with different physical and mechanical properties such as aluminum alloy and titanium alloy laminated assembly structures Hole-making precision, realizing effective chip breaking and chip removal, belongs to the technical field of machining tools. Background technique [0002] In order to reduce energy consumption and increase aircraft life, the proportion of aluminum alloys and titanium alloys used in aircrafts is increasing. In the aircraft assembly process, bolts and rivets are commonly used to connect aluminum alloy and titanium alloy to enhance performance and complement each other. Therefore, it is necessary to process a large number of connecting holes in the aluminum alloy and titanium alloy laminate. However, the hole d...

AI Technical Summary

Problems solved by technology

However, the hole diameter of aluminum alloy and titanium alloy laminated assembly is small and the processing is difficult. It is difficult to ensure the coaxiality of the hole when drilling, reaming and countersinking using traditional multi-process technology. There are many auxiliary processes, which reduces work efficiency. ; If drilling, reaming, and countersinking are integrated into the hole, it will be difficult to break chips, and poor chip removal will easily lead to the problem that the tool is easy to break, which will increase the manufacturing cost

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