CN102357788A - Machining method for solid carbide reamer - Google Patents

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

The solid carbide reamer processing method

Technical field

The present invention relates to a kind of solid carbide reamer processing method, be used to process solid carbide reamer.

Background technology

During small diameter bore on fine finishining titanium alloy or the high-duty steel part; The inserted alloy reamer of general employing; Inserted blade reamer processing technology comparative maturity; Manufacture also than being easier to, but have the cracked phenomenon of cutter tooth in use, part to be processed was scrapped owing to dimension overproof or bad causing of finish.In order to address this problem, we have used solid carbide reamer, and profile of tooth is with the processing of numerical control knife sharpener, and this cutter has well solved the cracked problem of cutter tooth.The processing method of this cutter is earlier 60 ° top to be worn at the hard alloy bar two ends, uses alloy cylindrical grinder processing excircles size then.But also produced new problem and shortage simultaneously: the top fineness that 1) grinds is bad, causes the grinding reference precision not high.Bowlder outside grinding, blade is not smart with each outer circles of guiding, and high-precision size also can't be guaranteed.2) spillage of material is bigger.Because during the blanking of this processing method requirement cutter all will extend and make counter center about 5mm in two ends, cut away at last; Simultaneously along with cylindrical increases, 60 ° of counter centers want and anti-nest preparation sharpening, and elongated portion must be along with lengthening, and draw one will be cut away cutter more than the 10mm, cause the huge waste in raw material, equipment loss and grinding man-hour.3) when sharpening machine-cut tooth and relief angle,, very easily the land mill is not had, the situation of disconnected sword takes place, cause waste product because benchmark is inaccurate.

Summary of the invention

The technical problem that the present invention will solve provides a kind of solid carbide reamer processing method; This method can not only effectively guarantee the axiality and the dimensional tolerance of high precision cutting tools product; And can practice thrift unnecessary raw material, equipment loss and grinding man-hour; Add centering grinding profile of tooth and relief angle in man-hour simultaneously, disconnected sword situation takes place when preventing grinding, reduce waste product.

For overcoming the above problems, concrete technical scheme of the present invention is following: a kind of solid carbide reamer processing method is characterized in that may further comprise the steps:

1) processing carbon steel false center: an end of false center is cylindrical; The diameter of cylinder is greater than the outside diameter of carbide-tipped reamer to be processed; The other end turning of false center goes out groove, and groove is trapezoidal truncated conical shape, and the top end diameter of trapezoidal round platform is the disk of Ф 1;

2) welding false center: the face of cylinder of the false center that processes is downward, and carbide alloy bar bottom surface overlaps with the disk of Ф 1 and be coaxial, and is with spelter solder that carbide alloy bar and false center welding is fixing;

3) turning false center: with lathe false center is carried out turning to the size less than finished product reamer outside diameter, and make centre bore, and grind centre bore, with the quality of control machining benchmark through pincers worker at end face;

4) processing reamer: the carbide alloy bar is processed, reached the specification requirement of cutter;

5) take out false center: after reamer machines, remove false center and get final product.

This solid carbide reamer processing method has effectively changed the bad difficult problem of the whole alloy knife size Control of high accuracy in the past, can also save expenses such as raw material, stops grinding and produces waste product, and its security has also obtained checking.

Description of drawings

Fig. 1 is the sketch of accepting of solid carbide reamer.

Fig. 2 is the false center sketch map.

Fig. 3 is the welding sketch map of false center and carbide alloy bar.

Fig. 4 is a false center turning sketch map.

Wherein 1 is false center; 2 are brazing; 3 is the carbide alloy bar.

The specific embodiment

As shown in Figure 1, rapidoprint is that Y300 whole hard alloy bar carries out solid carbide reamer, and the axiality of this reamer and blade precision are 0.004mm all, and processing method may further comprise the steps:

1) as shown in Figure 2; Processing carbon steel false center: an end of false center is cylindrical, and the diameter of cylinder is greater than the outside diameter of carbide-tipped reamer to be processed, and the other end turning of false center goes out groove; Groove is trapezoidal truncated conical shape, and the top end diameter of trapezoidal round platform is the disk of Ф 1;

2) as shown in Figure 3, the welding false center: the face of cylinder of the false center that processes is downward, and carbide alloy bar bottom surface overlaps with the disk of Ф 1 and be coaxial, and is with spelter solder that carbide alloy bar and false center welding is fixing;

3) as shown in Figure 4, turning false center: with lathe false center is carried out turning to the size less than finished product reamer outside diameter, and make centre bore, and grind centre bore, with the quality of control machining benchmark through pincers worker at end face;

4) processing reamer: the carbide alloy bar is processed, reached the specification requirement of cutter;

5) take out false center: after reamer machines, remove false center and get final product.

Advantage of the present invention is:

1) change again through the benchmark mode, the problem that makes the required precision of the whole alloy cutter of puzzlement be difficult to realize is solved.

2) expenses such as raw material, equipment loss and machining period have been saved greatly.

Disconnected sword no longer takes place when 3) grinding profile of tooth and relief angle, has reduced percent defective.

This method can be widely used in the processing of solid carbides such as high precision reamer, reamer, milling cutter.

Claims (1)

1. solid carbide reamer processing method is characterized in that may further comprise the steps:

1) processing carbon steel false center: an end of false center is cylindrical; The diameter of cylinder is greater than the outside diameter of carbide-tipped reamer to be processed; The other end turning of false center goes out groove, and groove is trapezoidal truncated conical shape, and the top end diameter of trapezoidal round platform is the disk of Ф 1;

2) welding false center: the face of cylinder of the false center that processes is downward, and carbide alloy bar bottom surface overlaps with the disk of Ф 1 and be coaxial, and is with spelter solder that carbide alloy bar and false center welding is fixing;

3) turning false center: with lathe false center is carried out turning to the size less than finished product reamer outside diameter, and make centre bore, and grind centre bore, with the quality of control machining benchmark through pincers worker at end face;

4) processing reamer: the carbide alloy bar is processed, reached the specification requirement of cutter;

5) take out false center: after reamer machines, remove false center and get final product.

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