CN207857973U

CN207857973U - A kind of reamer with passivation cutting edge structure

Info

Publication number: CN207857973U
Application number: CN201820178159.6U
Authority: CN
Inventors: 单延松
Original assignee: Suzhou Heng Bit Precision Tool Co Ltd
Current assignee: Suzhou Heng Bit Precision Tool Co Ltd
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2018-09-14
Anticipated expiration: 2028-02-01

Abstract

In order to solve the problems, such as that the aperture of drilling that the point of a knife of the above existing reamer sharply generates is also easy to produce burr, the utility model proposes a kind of reamers with passivation cutting edge structure, it widens the chamfering of the cutting edge structure of reamer, so that point of a knife is relatively mellow and full, without so sharp, so that reamer enables to the aperture burr of drilling to reduce in reaming or while repairing hole.

Description

A kind of reamer with passivation cutting edge structure

Technical field

The utility model is related to arrive cutter manufacture technical field, it is specifically related to a kind of hinge with passivation cutting edge structure Knife.

Background technology

Reamer has one or more cutters tooth, the rotary cutter for cutting off machined hole surface sheet metal, reamer tool The rotation finishing tool for having straight sword or helical edges for reaming or repaiies hole.Reamer since cutting output is few, want by machining accuracy Ask and be usually above drill bit, and existing reamer reaming or when repairing hole since only there are one chamferings at point of a knife, that is to say, that it is existing Reamer point of a knife at it is relatively sharp, and in the case that point of a knife is relatively sharp, it is easy to the aperture of drilling be caused to generate hair Thorn, and the case where generate burr then and be not reaming or wished to when repairing hole.

Utility model content

In order to solve the problems, such as that the aperture of drilling that the point of a knife of the above existing reamer sharply generates is also easy to produce burr, this reality With a kind of reamer with passivation cutting edge structure of novel proposition, the chamfering of the cutting edge structure of reamer is widened, to make Point of a knife is relatively mellow and full, without so sharp, so that reamer enables to the aperture of drilling in reaming or while repairing hole Burr is reduced.

As shown in Figure 1, being reamer overall structure diagram comprising：Shank 1, neck 2, working portion 3, neck 2 is by handle Portion 1 and working portion 3 are attached, and working portion 3 is divided into as main sword 33, side edge 32 and chip space 31, side edge 32 and chip space 31 are located at the longitudinal component of working portion 3, and main sword 33 is located at the free end of working portion, with the side edge 32 of longitudinal component and chip removal Slot 31 connects.

As shown in Fig. 2, being the close-up schematic view of the point of a knife 331 of main sword 33 in Fig. 1.Under normal conditions, main sword 33 Point of a knife 331 carries out the faces a and the faces b to carry out the faces chip formation c, so that the first chamfering is formed, naturally also unique chamfering, wherein The width W1 of chamfering be 0.1-2.0mm, the faces b with and the faces bevel c formed angle B be 45 °, the folder in the faces a and the faces b of point of a knife 331 Angle is 90 °.

As shown in figure 3, being the improved reamer with passivation cutting edge structure of reamer more than the utility model is directed to The close-up schematic view of point of a knife 331, a kind of reamer with passivation cutting edge structure comprising shank 1, neck 2, working portion 3, shank 1 and working portion 3 are attached by neck 2, and working portion 3 is divided into as main sword 33, side edge 32 and chip space 31, side edge 32 and chip space 31 be located at the longitudinal component of working portion 3, main sword 33 is located at the free end of working portion, the side with longitudinal component Sword 32 and chip space 31 connect, it is characterised in that：The faces a and the faces b are carried out multiple chip and are formed by the point of a knife 331 of main sword 33 The plane of >=2 chamfer machinings, the width of the plane of mono- chamfer machining of width G T.GT.GT of these plane combinations.

Further, the quantity of the plane of the chamfer machining of the point of a knife 331 of main sword 33 is 2~4；It is further preferred that The quantity of the plane of the chamfer machining of point of a knife 331 is 2.

Further, the faces c and the angle in the faces b that the first chamfer machining is formed are 45 °.

Further, the width W1 in the faces c that the first chamfer machining is formed is 0.1-2.0mm.

Further, the faces d and the angle in the faces a that the second chamfer machining is formed are 15 °.

Further, the width W2 in the faces d that the second chamfer machining is formed is 0.1-1.0mm.

Further, the faces a of point of a knife 331 and the angle in the faces b are 90 °

Further, the reamer of passivation cutting edge structure that has includes straight fluted reamer and spiral reamer.

Further, the material of the reamer of passivation cutting edge structure that has includes hard alloy and high-speed steel.

Using the improved reamer with passivation cutting edge structure of the utility model, fallen since multiple chip forms >=2 The plane of angle processing, the width of the plane of mono- chamfer machining of width G T.GT.GT of these plane combinations, so that point of a knife is opposite It is mellow and full, without so sharp, so that reamer enables to the aperture burr of drilling to reduce in reaming or while repairing hole.

Description of the drawings：

Specific implementation mode is further described below in conjunction with the accompanying drawings, wherein：

Fig. 1 is reamer overall structure diagram.

Fig. 2 is the close-up schematic view of the main angle of throat point of conventional reamers in Fig. 1.

Fig. 3 is the close-up schematic view of the main angle of throat point of the reamer of the utility model in Fig. 1.

Fig. 4 is the left view of the reamer of case study on implementation 1.

Fig. 5 is the schematic diagram in the aperture of reamer drilling.

Primary structure number explanation：

Specific implementation mode

Following specific implementation mode will further illustrate the utility model in conjunction with above-mentioned attached drawing.

Case 1 is embodied：

As shown in figure 3, the close-up schematic view of the point of a knife 331 for the reamer with passivation cutting edge structure, such as Fig. 4 institutes Show, is the left view of the reamer of case study on implementation 1.A kind of reamer with passivation cutting edge structure comprising shank 1, neck 2, work Make part 3, shank 1 and working portion 3 are attached by neck 2, and working portion 3 is divided into as main sword 33, side edge 32 and chip space 31, side edge 32 and chip space 31 are located at the longitudinal component of working portion 3, and main sword 33 is located at the free end of working portion, with longitudinal direction Partial side edge 32 and chip space 31 connect, it is characterised in that：The faces a and the faces b are carried out cut for 2 times by the point of a knife 331 of main sword 33 The faces plane c and the faces d of bits 2 chamfer machinings of formation, the angle in the faces c that the first chamfer machining is formed and the faces b is 45 °, and first falls The width W1 that angle processes the faces c to be formed is 0.1-2.0mm；The angle in the faces d and the faces a that the second chamfer machining is formed is 15 °, second The width W2 in the faces d that chamfer machining is formed is 0.1-1.0mm.The faces a of point of a knife 331 and the angle in the faces b are 90 °.Described has The reamer for being passivated cutting edge structure is straight fluted reamer, and the material of reamer is hard alloy.

As shown in figure 5, the schematic diagram in the aperture for reamer drilling.Using the hinge with passivation cutting edge structure of the present embodiment Knife, since multiple chip forms the plane of 2 chamfer machinings, the plane of mono- chamfer machining of width G T.GT.GT of these plane combinations Width so that point of a knife is relatively mellow and full, without so sharp, so that reamer can make in reaming or while repairing hole 4 burr of aperture that must be drilled is reduced.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims

1. a kind of reamer with passivation cutting edge structure comprising shank (1), neck (2), working portion (3), neck (2) will Shank (1) and working portion (3) are attached, and working portion (3) is divided into as main sword (33), side edge (32) and chip space (31), Side edge (32) and chip space (31) are located at the longitudinal component of working portion (3), and main sword (33) is located at the free end of working portion, with The side edge (32) and chip space (31) of longitudinal component connect, it is characterised in that：The point of a knife (331) of main sword (33) by the faces a and the faces b into Row carries out the plane of multiple chip formation >=2 chamfer machining, and mono- chamfer machining of width G T.GT.GT of these plane combinations is put down The width in face.

2. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The point of a knife (331) of main sword (33) Chamfer machining plane quantity be 2~4.

3. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The chamfer machining of point of a knife (331) Plane quantity be 2.

4. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The c that first chamfer machining is formed The angle in face and the faces b is 45 °.

5. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The c that first chamfer machining is formed The width W1 in face is 0.1-2.0mm.

6. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The d that second chamfer machining is formed The angle in face and the faces a is 15 °.

7. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The d that second chamfer machining is formed The width W2 in face is 0.1-1.0mm.

8. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：The faces a and the faces b of point of a knife (331) Angle be 90 °.

9. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：Described has passivation cutting edge knot The reamer of structure includes straight fluted reamer and spiral reamer.

10. the reamer with passivation cutting edge structure as described in claim 1, it is characterised in that：Described has passivation cutting edge The material of the reamer of structure includes hard alloy and high-speed steel.