A countersunk tool for indentable cnc machining

Abstract

The invention relates to the technical field of machining. A retractable countersunk head cutter for computerized numerical control (CNC) processing comprises a cutter holder, a cutter, and a retractable mechanism, wherein the cutter holder and the cutter are slidably connected through the retractable mechanism; the retractable mechanism comprises a screw and a spring; a through hole for the rod part of the screw to penetrate through is formed in the cutter holder; the rod part of the screw penetrates through the through hole so as to be in threaded connection with the cutter; the upper end part of the cutter is inserted into the cutter holder; the spring sleeves the periphery of the rod part of the screw; and the upper end and the lower end of the spring are abutted against the cutter holder and the cutter. The retractable countersunk head cutter for CNC processing further comprises a limiting mechanism for limiting the feeding amount of the cutter, wherein the limiting mechanism comprises a nylon cover and a bearing; the nylon cover sleeves the periphery of the bearing; and the lower end surface of the nylon cover is a contact surface for contacting the surface of a workpiece soas to limit the feeding amount. According to the retractable countersunk head cutter for CNC processing provided by the invention, the cutter and the cutter holder are connected through the retractable mechanism, so that the cutter can be retractable conveniently; and through the limiting mechanism, the maximum feeding amount of the cutter can be accurately limited.

Description

technical field [0001] The invention relates to the technical field of machining, in particular to a counterbore cutter. Background technique [0002] At present, in the CNC industry, for the processing of countersunk holes and blind holes, the processing depth from the datum plane to the hole is controlled by combining coordinates and programs. However, in the CNC machining of various non-flat materials for auto parts, due to the influence of the material itself (such as aluminum extrusion, aluminum die-casting, welding, etc.), the fluctuation of its surface profile is large, resulting in the surface of various non-flat materials It is wavy, and the CNC feed depth is consistent, resulting in the fluctuation of the depth from the reference plane to the hole with the fluctuation of the material surface. [0003] In the actual processing process, the above-mentioned depth problem is often adjusted by grasping the range of the maximum value, minimum value and average value of ...

AI Technical Summary

Problems solved by technology

However, when the difference between the maximum value and the minimum value and the average value is greater than the tolerance of hole processing, this processing method cannot guarantee product quality

And the difference between the maximum value and the minimum value and the average value, even if it is not greater than the tolerance of hole processing, the depth and size of the processed hole fluctuate greatly, which cannot meet the requirements of CPK, and is the biggest bottleneck in quality improvement

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