CN208033808U - A kind of strand milling cutter with more cutting knife faces - Google Patents

Abstract

The utility model discloses a kind of strand milling cutters with more cutting knife faces to be provided with diameter the first knife face incremented by successively, the second knife face and third knife face from left to right from cutter head from one end far from the knife bar；It when to multigroup step hole machined, is processed and formed at one time, reduces processing course error, there is no step circular arc machined trace, each step dimension is more precisely consistent；Three groups of hole machineds are once completed, reduces tool change time and cutter dry running time, is improved significantly in processing efficiency.

Description

A kind of strand milling cutter with more cutting knife faces

Technical field

The utility model belongs to machining tool technical field, and in particular to a kind of strand milling with more cutting knife faces Knife.

Background technology

Currently, in the processing to multigroup stepped hole in part as shown in Figure 1, mostly uses multigroup hole division of labor step milling and add Work need to use multigroup boring cutter to distinguish Boring in the higher hole of required precision；.In terms of quality：Three groups of Kong Yousan are boring cutter point It does not process, after each tool changing, there are cutter clamping errors, and step depth can be caused inconsistent, and especially step junction connects Tool marks mark, arc transition be not round and smooth；In terms of efficiency：Three groups of Kong Yousan respectively process boring cutter, need to carry out tool changing three times, pause Time is more, and processing efficiency is low.

Invention content

The utility model provides a kind of strand milling cutter with more cutting knife faces for the drawbacks described above of the prior art.

The purpose of this utility model is achieved through the following technical solutions：

A kind of strand milling cutter with more cutting knife faces, includes the knife bar of cutter head and cylindrical structure；The cutter head with it is described Knife bar is integrally formed using hard alloy；The cutter head is coaxially disposed with the knife bar；The cutter head includes multiple spiral helicine Cutting edge and chip space, the cutting edge and chip space are separately arranged；The cutter head is spiral helicine revolving body, the helical form Revolving body jitter values be≤0.003 μm；The helical angle for the spiral helicine revolving body that the cutter head is formed is 8 °；The cutter head From one end far from the knife bar, it is provided with diameter the first knife face incremented by successively, the second knife face and third knife from left to right Face；Rounding off forms First Transition face between first knife face and second knife face, the First Transition face with it is described Angle between the axial line of knife bar is 20 °；Rounding off forms the second mistake between second knife face and the third knife face Face is crossed, the angle between second transition face and the axial line of the knife bar is 45 °；The third knife face and the knife bar it Between rounding off formed third transition face；Angle between the third transition face and the axial line of the knife bar is 45 °.

Further, the cutting edge is set as four；Between the two neighboring cutting edge non-working surface and working face Angle is 100 °；The angle of inclination on each cutting edge working face top is 20 °.

Further, the length of the cutter head is 1.4~1.6 times of length of the knife bar, and the cutter head is equipped with protection Coating.

Compared with prior art, the utility model has at least the following advantages：

The strand milling cutter with more cutting knife faces of the utility model, from cutter head from one end far from the knife bar, from a left side The right side is provided with diameter the first knife face incremented by successively, the second knife face and third knife face；It is primary to add when to multigroup step hole machined Work is molded, and reduces processing course error, and there is no step circular arc machined trace, each step dimension is more precisely consistent；It is primary complete At three groups of hole machineds, reduces tool change time and cutter dry running time, be improved significantly in processing efficiency.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structure chart of parts to be processed；

Fig. 2 is the structural schematic diagram front view of the strand milling cutter with more cutting knife faces of the utility model；

Fig. 3 is the left view of Fig. 2.

Reference sign：1- cutter heads；2- knife bars；3- cutting edges；4- chip spaces；The first knife faces of 5-；The second knife faces of 6-；7- Third knife face；8- First Transitions face；The second transition faces of 9-；10- third transition faces.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.

Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.

It is to be appreciated that the directional instruction of institute in the utility model embodiment（Such as up, down, left, right, before and after ...） It is only used for explaining in a certain particular pose（As shown in the picture）Under relative position relation, motion conditions etc. between each component, such as When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.

The description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as It indicates or implies its relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ", The feature of " second " can explicitly or implicitly include at least one of the features.

In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise Clear specific restriction.

In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " may be a fixed connection, may be a detachable connection, or integral；It can be mechanical connection, also may be used To be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements Or the interaction relationship of two elements, unless otherwise restricted clearly.It for the ordinary skill in the art, can be with The concrete meaning of above-mentioned term in the present invention is understood as the case may be.

In addition, the technical solution between each embodiment of the utility model can be combined with each other, but must be with ability Domain those of ordinary skill can be implemented as basis, will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of this technical solution is not present, also not within the protection domain of the requires of the utility model.

As shown in Figure 2 and Figure 3, a kind of strand milling cutter with more cutting knife faces, includes the knife bar of cutter head 1 and cylindrical structure 2；The cutter head 1 is integrally formed with the knife bar 2 using hard alloy；The cutter head 1 is coaxially disposed with the knife bar 2；It is described Cutter head 1 includes four spiral helicine cutting edges 3 and chip space 4, and the cutting edge 3 and chip space 4 are separately arranged；The cutter head 1 is spiral helicine revolving body, and the jitter values of the spiral helicine revolving body are≤0.003 μm；The cutter head 1 is formed spiral helicine The helical angle of revolving body is 8 °；The cutter head 1 is provided with diameter and passs successively from left to right from one end far from the knife bar 2 The first knife face 5, the second knife face 6 and the third knife face 7 increased；Rounding off shape between first knife face 5 and second knife face 6 At First Transition face 8, the angle between the First Transition face 8 and the axial line of the knife bar 2 is 20 °；Second knife face 6 Rounding off forms the second transition face 9, the axial line of second transition face 9 and the knife bar 2 between the third knife face 7 Between angle be 45 °；Rounding off forms third transition face 10 between the third knife face 7 and the knife bar 2；The third Angle between transition face 10 and the axial line of the knife bar 2 is 45 °.

Wherein, the angle between two neighboring 3 non-working surface of the cutting edge and working face is 100 °；It is cut described in each The angle of inclination for cutting 3 working face top of sword is 20 °.

Wherein, the length of the cutter head 1 is 1.4~1.6 times of length of the knife bar 2, and the cutter head 1 is equipped with protection Coating（It is not shown in figure）.

In use, blowing clean knife bar position and cutter chuck endoporus with high pressure air rifle；Knife bar is fastened on collet, is packed into Specified tool magazine position；After workpiece bores pre- hole, call in the cutter, run by specified cutting parameter, cutter at the uniform velocity rotates, into Lattice are continuously finished the machining in three groups of holes；It is processed and formed at one time, reduces processing course error, there is no step circular arcs to connect Tool marks mark, each step dimension are more precisely consistent；Three groups of hole machineds are once completed, when reducing tool change time and cutter dry running Between, it is improved significantly in processing efficiency

More than, the only preferable specific implementation mode of the utility model, but the protection domain of utility model is not limited to This, any one skilled in the art within the technical scope disclosed by the utility model, the variation that can be readily occurred in Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with right Subject to the protection domain of claim.

Claims (3)

1. a kind of strand milling cutter with more cutting knife faces, includes the knife bar of cutter head and cylindrical structure；The cutter head and the knife Bar is integrally formed using hard alloy；The cutter head is coaxially disposed with the knife bar, which is characterized in that the cutter head includes multiple Spiral helicine cutting edge and chip space, the cutting edge and chip space are separately arranged；The cutter head is spiral helicine revolving body, The jitter values of the spiral helicine revolving body are≤0.003 μm；The helical angle for the spiral helicine revolving body that the cutter head is formed is 8 °； The cutter head is provided with diameter the first knife face incremented by successively, the second knife face from left to right from one end far from the knife bar With third knife face；Rounding off forms First Transition face, the First Transition between first knife face and second knife face Angle between face and the axial line of the knife bar is 20 °；Rounding off shape between second knife face and the third knife face At the second transition face, the angle between second transition face and the axial line of the knife bar is 45 °；The third knife face and institute Rounding off forms third transition face between stating knife bar；Angle between the third transition face and the axial line of the knife bar is 45°。

2. the strand milling cutter according to claim 1 with more cutting knife faces, which is characterized in that the cutting edge is set as four It is a；Angle between the two neighboring cutting edge non-working surface and working face is 100 °；Each described cutting edge working face The angle of inclination on top is 20 °.

3. the strand milling cutter according to claim 1 or 2 with more cutting knife faces, which is characterized in that the length of the cutter head It it is 1.4~1.6 times of the length of the knife bar, the cutter head is equipped with protective coating.