Machining method for solid carbide reamer

Abstract

The invention relates to a machining method for a solid carbide reamer. The machining method is characterized by comprising the following steps of: 1) machining a carbon steel false center; 2) welding the false center; 3) turning the false center; 4) machining a reamer; and 5) taking the false center out and removing the false center. By the method, the coaxiality and dimensional tolerance of a high-accuracy cutter product can be effectively ensured, unnecessary raw material and equipment loss and grinding machining working hours can be reduced, and simultaneously, a tooth profile and a clearance angle can be aligned and ground in machining to prevent blade breaking conditions in the grinding and reduce waste products.

Description

technical field [0001] The invention relates to a processing method for a solid carbide reamer, which is used for processing the solid carbide reamer. Background technique [0002] When finishing the small-diameter holes on titanium alloy or high-strength steel parts, the insert alloy reamer is generally used. The insert reamer has a relatively mature processing technology and is relatively easy to manufacture, but there is a possibility that the teeth may be broken during use. Phenomenon, the processed parts are scrapped due to excessive size or poor surface finish. In order to solve this problem, we have applied solid carbide reamers, and the tooth shape is machined by CNC sharpening machine. This kind of cutter solves the problem of tooth fragmentation very well. The processing method of this tool is to first grind the two ends of the carbide rod into a 60° top, and then use the alloy cylindrical grinder to process the outer circle size. But at the same time, new proble...

AI Technical Summary

Problems solved by technology

But at the same time, there are new problems and deficiencies: 1) The polished top finish is not good, resulting in low precision of the grinding reference

When grinding the outer circle, the coaxiality between the blade and the guide outer circles is not precise, and the high-precision dimensions cannot be guaranteed

2) Material loss is relatively large

Because this processing method requires both ends of the cutting tool to be lengthened by about 5mm to make the reverse tip, and finally cut off; at the same time, as the outer circle increases, if the 60° reverse tip is to be sharpened with the reverse dimple, the lengthened part must be With the lengthening, more than 10mm will be cut off with a single knife, resulting in a huge waste of raw materials, equipment loss and grinding man-hours

3) When the sharpening machine is processing the tooth shape and back angle, due to the inaccurate reference, it is very easy to grind the edge band and cause the edge to break, resulting in waste products

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