Eccentric chamfering and method of processing the same

Abstract

The invention relates an eccentric chamfer and a processing method thereof, which is characterized in that the chamfer which is positioned on a hole mouth of a shaft hole at one side of a draft slope on a cast is an eccentric chamfer, and the central shaft line of the chamfer conical surface parallels to the central shaft line of the shaft hole, the eccentric amount exists between the central shaft line of the chamfer conical surface and the central shaft line of the shaft hole, the eccentric chamfer is positioned at the periphery of a hole mouth of the shaft hole, and the whole peripheral chamfer surface is complete; the processing method of the eccentric chamfer is against the hole mouth of the shaft hole which is arranged at one side of the draft slope, the chamfer surface formed by the rotation of a chamfer tool is the chamfer conical surface, the central shaft line of the chamfer conical surface parallels to the central shaft line of the shaft hole, the eccentric amount exists between the central shaft line of the chamfer conical surface and the central shaft line of the shaft hole, and the chamfer tool is fed along the axial direction. The invention can solve the problem of non-complete chamfer caused by actual boundary conditions, thus leading the cast with an draft angle to ensure the complete chamfer under the premise of ensuring the hole depth.

Description

technical field [0001] The invention relates to a chamfer and a processing method of the chamfer. Background technique [0002] Mechanical shaft holes are often chamfered for guidance and deburring. The chamfering feature currently used is that the central axis of the chamfered cone coincides with the central axis of the shaft hole, that is, concentric chamfering. However, in engineering castings, the minimum draft angle is often required due to the process, and the side of the casting where the draft angle is located is a draft slope with a certain slope, making the upper top of the casting wider and the lower bottom narrow. When the wall thickness of the casting is limited and at the same time it is required to ensure a certain length of hole depth along the thickness direction of the casting, the size of the concentric chamfer of the existing structure will be limited, thus leading to the position towards the slope top of the casting The chamfer of the hole on the shaft...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an eccentric chamfer and its processing method in order to avoid the disadvantages of the above-mentioned prior art, which solves the problem of incomplete chamfers caused by actual boundary conditions, so that castings with draft angles can be guaranteed Under the premise of hole depth, the chamfering can be guaranteed complete

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