CN209334844U - A kind of hard alloy forming reamer that shear blade is processed using wrong sword - Google Patents

Abstract

The utility model discloses a cemented carbide forming reamer whose bottom edge is processed by a wrong edge, comprising a cutter shaft and a cutter head, the cutter head is correspondingly arranged at one end of the cutter shaft, and the diameter of the cutter head is smaller than that of the cutter shaft. The size of the diameter, the cutter head and the cutter shaft are set in an integrated structure, the surface of the cutter head is provided with a cutting edge, the cutting edge is provided with a plurality of cutting edges, the cutting edge includes a hollow cutting edge and a cutting edge, the The hollow cutting edge is arranged on the side of the end of the cutter head from inside to outside in an inclined manner to the side of the cutter shaft, and the cutting blade is kept flush on the side of the end of the cutter head. The utility model reduces the resistance in the process of tool processing by adopting the method of wrong edge processing of the bottom edge, effectively improves the surface roughness of the bottom plane of the reamer processing, and solves the instability in the processing process of the traditional reamer.

Description

A Carbide Forming Reamer with Staggered Bottom Edge

technical field

The utility model relates to the field of cutting tools for mechanical processing, in particular to a cemented carbide forming reamer whose bottom edge is processed by staggered edges.

Background technique

The general reamer is only involved in the finishing of the hole, and the reamer will also participate in the 180° machining of the bottom plane when designing special products. Since the reamer is a finishing tool, the amount of chip removal is small during use. Edge extrusion processing, so that the processed hole diameter roughness will be very good, the processing cycle will be faster, and the tool life will be longer. However, the multi-blade reamer has defects when machining the bottom plane at 180°, because the cutting edge contacts the workpiece surface greatly, and the surface is prone to vibration marks after machining. For products with high requirements on bottom plane roughness, traditional reamers often cannot meet them.

Utility model content

The main technical problem to be solved by the utility model is to provide a way to reduce the resistance in the process of tool processing by adopting the method of bottom edge staggered edge processing, effectively improve the surface roughness of the bottom plane of the reamer processing, and solve the problem of traditional reamer processing. The unstable bottom edge in the process adopts the cemented carbide forming reamer with wrong edge processing.

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is to provide a cemented carbide forming reamer whose bottom edge is processed by a wrong edge, including a cutter shaft and a cutter head, and the cutter head is correspondingly arranged at one end of the cutter shaft , the diameter of the cutter head is smaller than the diameter of the cutter shaft, the cutter head and the cutter shaft are arranged in an integrated structure, the surface of the cutter head is provided with a cutting edge, and the cutting edge is provided with multiple pieces, the The cutting edge includes a space-avoiding knife edge and a cutting knife edge. The space-avoiding knife edge is inclined from the inside to the outside to the knife axis on one side of the end of the knife head. flat set.

In a preferred embodiment of the present utility model, a plurality of the cutting edges are equidistantly arranged on the surface of the cutter head.

In a preferred embodiment of the present invention, there are three space-avoiding blades and three cutting blades respectively.

In a preferred embodiment of the utility model, the space-avoiding blades and cutting blades are equidistantly arranged on the surface of the cutter head in a staggered manner.

In a preferred embodiment of the present invention, the inclination angle of the hollow cutting edge on the side of the end of the cutting head is 5°.

In a preferred embodiment of the present invention, the cutting edge is concavely arranged at the front end of the side wall on one side of the end of the cutter head.

The beneficial effects of the utility model are: the utility model reduces the resistance in the process of tool processing by adopting the way of bottom edge staggered edge processing, effectively improves the surface roughness of the bottom plane of the reamer processing, and solves the problem of traditional reamer processing. Instability in .

Description of drawings

Fig. 1 is the front view of a preferred embodiment of the cemented carbide forming reamer whose bottom edge is processed by a wrong edge in the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a partially enlarged view of the cutting edge of Fig. 1;

FIG. 4 is a partially enlarged view of the space-avoiding blade in FIG. 1 .

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly .

Please refer to Fig. 1 in combination with Fig. 2-Fig. 4, the embodiment of the present utility model includes: a cemented carbide forming reamer whose bottom edge adopts staggered edge processing, including a cutter shaft 1 and a cutter head 2, and the cutter head 2 is correspondingly arranged At one end of the cutter shaft 1, the diameter of the cutter head 2 is smaller than the diameter of the cutter shaft 1, the cutter head 2 and the cutter shaft 1 are provided in an integrated structure, and a cutting edge is arranged on the opposite surface of the cutter head 2, so The cutting edge is provided with a plurality of pieces, and the cutting edge includes a space-avoiding knife edge 3 and a cutting knife edge 4, and the space-avoiding knife edge 3 is arranged on the side of the end of the cutter head 2 from the inside to the outside and is inclined to the side of the knife shaft. The cutting edge 4 is kept flush on the end side of the cutting head 2 .

A plurality of the cutting edges are arranged at equal intervals on the surface of the cutter head 2 .

There are three space-avoiding blades 3 and three cutting edges 4 respectively, and the space-avoiding knife edges 3 and cutting edges 4 are equidistantly arranged on the surface of the cutter head 2 in a staggered manner.

The inclination angle α of the escaping blade 3 on the side of the end of the cutter head 2 is 5°.

The cutting edge is concavely arranged at the front end of the side wall on one side of the end of the cutter head 2 .

The wrong edge is processed at the bottom edge of the tool, and the resistance of the reamer during processing is reduced by reducing the number of processing edges of the tool, so that the cutting is brisk and the roughness is improved.

The utility model is a cemented carbide forming reamer whose bottom edge is processed by staggered edges. The utility model reduces the resistance during tool processing by adopting the method of staggered edge processing on the bottom edge, and effectively improves the bottom plane of the reamer. Excellent surface roughness, which solves the instability in the process of traditional reamer processing.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (6)

1. A cemented carbide forming reamer whose bottom edge adopts wrong edge processing, comprises a cutter shaft and a cutter head, and the cutter head is correspondingly arranged at one end of the cutter shaft, and the diameter of the cutter head is smaller than the diameter of the cutter shaft, The cutter head and the cutter shaft are arranged in an integrated structure, and it is characterized in that: the surface of the cutter head is provided with a cutting edge, the cutting edge is provided with a plurality of cutting edges, and the cutting edge includes a hollow cutting edge and a cutting edge. The space-avoiding blade is arranged on the side of the end of the cutter head from inside to outside in an inclined manner to the side of the cutter shaft, and the cutting blade is kept flush on the side of the end of the cutter head. 2 . The cemented carbide formed reamer whose bottom edge is processed by a wrong edge according to claim 1 , wherein a plurality of said cutting edges are equidistantly arranged on the surface of said cutter head. 3 . 3. The cemented carbide formed reamer whose bottom edge is processed by staggered edges according to claim 1, wherein there are three space-avoiding blades and three cutting blades respectively. 4. The cemented carbide formed reamer with staggered edge processing for the bottom edge according to claim 3, characterized in that: the space-avoiding blades and the cutting blades are equidistantly and alternately arranged on the surface of the cutter head. 5 . The cemented carbide formed reamer whose bottom edge is processed by a wrong edge according to claim 1 , wherein the angle of inclination of the space-avoiding blade on the side of the end of the cutter head is 5°. 6 . The cemented carbide formed reamer whose bottom edge is processed by a wrong edge according to claim 1 , wherein the cutting edge is concavely arranged at the front end of the side wall on the side of the end of the cutter head. 7 .