Tool bit rotating mechanism

Abstract

The invention relates to the field of machining devices, in particular to a tool bit rotating mechanism. The tool bit rotating mechanism comprises a shell connected with a tool bit and a transmissionshaft with one end stretching into the shell; the end, stretching into the shell, of the transmission shaft is connected with a first conical gear; the other end of the transmission shaft is connectedwith a driving device; the first conical gear is connected with a rotating shaft through a second conical gear in cooperative connection with the first conical gear; the two ends of the rotating shaft are rotationally connected with the shell; and a first horizontal gear is further fixedly arranged on the rotating shaft, and is connected with a horizontal gear on the tool bit. The tool bit rotating mechanism is simple in structure and convenient to use; by means of the first conical gear and the second conical gear, rotating around the transmission shaft is converted into rotating perpendicular to the transmission shaft, by means of engagement between the horizontal gear installed on the rotating shaft and the horizontal gear on the tool bit, rotating is transmitted to the tool bit, and free rotating of the tool bit is achieved.

Description

technical field [0001] The invention relates to the field of mechanical processing equipment, in particular to a cutter head rotation mechanism. Background technique [0002] Due to the difficulties of heat dissipation and chip removal, the machining of deep blind hole structures has become one of the most difficult areas in machining. [0003] Most of the current deep blind holes adopt the processing method of "drilling, expanding, and boring". And the traditional boring processing method will no longer be applicable. Need to find a new tool to achieve processing. For a part with a special-shaped deep blind hole structure, the inner cavity is a deep blind hole structure with a special-shaped surface, the ratio of the depth to the diameter of the inner cavity is greater than 15:1, and the special-shaped surface at the end of the inner cavity is tangent to three arcs Ordinary boring tools cannot process the inner cavity of the part, especially the head profile. It is neces...

AI Technical Summary

Problems solved by technology

For a part with a special-shaped deep blind hole structure, the inner cavity is a deep blind hole structure with a special-shaped surface, the ratio of the depth to the diameter of the inner cavity is greater than 15:1, and the special-shaped surface at the end of the inner cavity is tangent to three arcs Ordinary boring tools cannot process the inner cavity of the part, especially the head profile. It is necessary to make an expandable boring tool that can change the diameter during the simultaneous cutting process of the X and Z axes of the lathe. Machining of inner cavity profile

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