CN205393679U - Anti - tapering reamer of dextrorotation is cut on a left side - Google Patents

Abstract

The utility model belongs to machining cutter field relates to an anti - tapering reamer of dextrorotation is cut on a left side, including stalk portion, cutting part and guide bar, the cutting part includes cutting edge and chip pocket, the cutting edge is left sword, chip pocket and cutting edge for dextrorotation to, the cutting edge diameter is the back taper degree. This anti - tapering reamer of dextrorotation is cut on a left side can process out the work piece that positive tapering reamer can not be processed, accomplishes the processing in accurate complicated hole, has solved the complicated hole problem that the unable processing of positive tapering sword was used to engine and hydraulic pressure spare trade.

Description

The anti-taper reamer of left cut dextrorotation

Technical field

This utility model belongs to machining tool field, relates to a kind of anti-taper reamer of left cut dextrorotation.

Background technology

At present, for the domestic position that work piece in parts is processed between handle of a knife and blade, commonly used is that after making special type mould, workpiece is inverted, then many reversely combined processing of positive taper down gate cutter, not only complex process, work efficiency are low, improve again difficulty of processing, simultaneously, being subject to the restriction of special die, the precision in hole is difficult to ensure that.

Utility model content

In order to solve shortcoming and the deficiency of prior art, this utility model provides a kind of anti-taper reamer of left cut dextrorotation, the anti-taper reamer of left cut dextrorotation adopts dextrorotation to helical tooth, the workpiece that positive taper down gate reamer can not be processed can be processed, complete the processing in accurate complicated hole, solve electromotor and complicated hole problem that hydraulic part industry uses positive taper down gate cutter to process.

Described technical scheme as follows: this utility model provides a kind of anti-taper reamer of left cut dextrorotation, including blade, shank and guide post, described blade includes cutting edge and chip pocket, described cutting edge includes anterior angle, relief angle and tread, described cutting edge is left sword, and for dextrorotation to helical tooth, the sword end face diameter of described blade is more than sword tail diameter, form back draught, described chip pocket is dextrorotation to helicla flute, chip pocket while at an angle with cutting edge, described blade is positioned at the left end of shank, described guide post is column type, it is positioned at the left end of blade, described shank right-hand member have swaging clamp groove, there is cylinder on the right side of swaging clamp groove, cylindrical right side is the thallus handle of a knife that a two sides is parallel.

Preferred as technique scheme, the diameter back draught of described blade is 1:8.

Preferred as technique scheme, the relief angle of described cutting edge is 15 °.

Preferred as technique scheme, the angle of described chip pocket is 80 °.

Use the anti-taper reamer processing work endoporus of left cut dextrorotation that this utility model provides, can effectively reduce the crackle that straight-tooth reamer machining produces, improve the fineness of machined surface, and reduce the resistance that tapering cuts comprehensively, inner bore surface roughness can reach Ra value more than 0.4～0.8 μm, and circularity and tapering are less than 3 μm.

This anti-taper reamer of left cut dextrorotation adapts to the high rotating speed of high accuracy and high efficiency production, improve import cutter and seriously restrict our province, China's equipment manufacture current situation, improve equipment manufacture level, promoted Domestic Cutting Tool, fill the domestic gaps, reached international most advanced level.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the anti-taper reamer structural representation of left cut dextrorotation provided in the present embodiment；

Fig. 2 is that the B-B of Fig. 1 is to sectional view；

Fig. 3 is that the C-C of Fig. 1 is to sectional view.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail.

This utility model provides a kind of anti-taper reamer of left cut dextrorotation, as shown in Figure 1, Figure 2 and Figure 3, including blade 1, shank 2 and guide post 3, described blade 1 includes cutting edge 1-1 and chip pocket 1-2, and described cutting edge includes anterior angle, relief angle and tread, and the relief angle of described cutting edge is 15 °, described cutting edge 1-1 is left sword, and for dextrorotation to helical tooth, the sword end face 1-3 diameter of described blade 1 more than sword afterbody 1-4 diameter, is formed

Back draught, tapering is 1:8, described chip pocket 1-2 is dextrorotation to helicla flute, and chip pocket 1-2 forms angle with cutting edge 1-1, and this angle is 80 °, described blade 1 is positioned at the left end of shank 2, described guide post 3 is column type, is positioned at the left end of blade 1, and the right-hand member of described shank 2 has swaging clamp groove 2-1, the right side of swaging clamp groove 2-1 has cylinder 2-2, the right side of cylinder 2-2 to be the parallel thallus handle of a knife 2-3 in a two sides.

In order to improve the fineness of processed endoporus, form and position tolerance and roughness to each significant points of this reamer are controlled, described shank radial run-out≤0.01 to common axis, the sharpening size of described cutting edge and sharpening angle diameter error are at 0.005mm, angular error ± 1 ' within, the ligament surface roughness Ra value of cutting edge is not more than 0.2 μm, and described cutter hub surface roughness Ra value is not more than 0.8 μm..

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (4)

1. null1. the anti-taper reamer of left cut dextrorotation，Including blade (1)、Shank (2) and guide post (3)，Described blade (1) includes cutting edge (1-1) and chip pocket (1-2)，Described cutting edge includes anterior angle、Relief angle and tread，It is characterized in that: described cutting edge (1-1) is left sword，And for dextrorotation to helical tooth，The sword end face diameter of described blade (1) is more than sword tail diameter，Form back draught，Described chip pocket (1-2) for dextrorotation to helicla flute，Chip pocket while at an angle with cutting edge，Described blade (1) is positioned at the left end of shank (2)，Described guide post (3) is column type，It is positioned at the left end of blade (1)，The right-hand member of described shank (2) has swaging clamp groove (2-1)，There is cylinder (2-2) on the right side of swaging clamp groove (2-1)，The right side of cylinder (2-2) is the thallus handle of a knife (2-3) that a two sides is parallel.
2. 2. the anti-taper reamer of left cut dextrorotation according to claim 1, it is characterised in that: the diameter back draught of described blade (1) is 1:8.
3. 3. the anti-taper reamer of left cut dextrorotation according to claim 1, it is characterised in that: the relief angle of described cutting edge is 15 °.
4. 4. the anti-taper reamer of left cut dextrorotation according to claim 1, it is characterised in that: the angle of described chip pocket is 80 °.