CN206828930U

CN206828930U - A kind of shank tools for road milling machine

Info

Publication number: CN206828930U
Application number: CN201720386405.2U
Authority: CN
Inventors: 苗祥; 秦鹏程
Original assignee: Suzhou Kai Tong Construction Machinery And Equipment Co Ltd
Current assignee: Jiangsu Wuyuan Machinery Manufacturing Co.,Ltd.
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-01-02
Anticipated expiration: 2027-04-13

Abstract

A kind of cutter of milling-planing machine belongs to milling machine part technical field, relates generally to a kind of shank tools for road milling machine；The utility model is limited to conventional shape and structure to solve cutter in spite of illness of the prior art, and service life is short, high-abrasive material utilization rate is low, ineffective problem；The utility model, including head, head include point of a knife, and point of a knife includes the first work department, and the first work department is extended with the second work department and the 3rd work department successively to cutter feed direction, and the top surface of the 3rd work department is umbrella working face；The utility model realizes the longer service life of cutter, hence it is evident that reduces operating expenses.

Description

A kind of shank tools for road milling machine

Technical field

A kind of cutter of milling-planing machine belongs to milling machine part technical field, relates generally to a kind of band handle for road milling machine Cutter.

Background technology

Shank tools are usually used in the machinery of bottom surface maintenance, such as road milling machine, pavement recycling machine or similar machine Cut on roller；The point of a knife of cutter is its direct working portion, is directly contacted with the pavement material for needing to cut off, so shank tools Structure has profound influence for the cutting effect of cutter, however, cutter in spite of illness of the prior art is limited to conventional shape and knot Structure, service life is short, high-abrasive material utilization rate is low, and operating efficiency is low.

Utility model content

In order to solve the above problems, the utility model discloses a kind of shank tools for road milling machine, structure letter Single, operating efficiency height, operating expenses are low.

What the purpose of this utility model was realized in：

A kind of shank tools for road milling machine, including head, head include point of a knife, and point of a knife includes the first work Portion, the first work department are extended with the second work department and the 3rd work department, the top surface of the 3rd work department successively to cutter feed direction For umbrella working face.

The point of a knife is provided with axis, and the second work department includes the second working face, and the first work department includes the first working face, Second working face and the first working face are rotated around axis by inner concave curve formed respectively；

The junction of first work department and the second work department is First Transition area, between the second work department and the 3rd work department Junction be the second transition region, the cross-sectional diameter in First Transition area is more than the cross-sectional diameter of the second transition region, such Design advantage is, the tungsten carbide material on point of a knife is redistributed, and improves its utilization rate, and performance is made further excellent Change, penetration capacity improves, and reduces cutting resistance, it is ensured that the high speed of travel and production efficiency of machine.

The First Transition area and the vertical section both sides of the second transition region are camber line or crest line.

The diameter range of second transition region cross section is 5mm-50mm, and the diameter range of First Transition area cross section is Between 60mm-100mm, the first work department basal diameter scope is 110mm-150mm.

The outside of first work department is provided with some depressions circumferentially, and the material weight of recess is mended to second Work department and the 3rd work department, not only save material, improve the utilization ratio of alloy material, under the material for realizing same weight Very thin enough, the sharp shape of cutter, improves stock-removing efficiency.

The drift angle scope of 3rd work department is 130 ° -140 °, compared to the angle α 1 of conventional point of a knife same area, is increased Greatly, for α 1 angular range at 100 °~110 °, this changes point of a knife and the contact angle on ground, contributes to point of a knife on excision ground When, expand the contact area with ground, reduce the pressure suffered by point of a knife, reduce corner wear amount, improve cutter life.

The point of a knife is made up of superhard alloy material, such as carbide, diamond, polycrystalline diamond or other and diamond class Like the material of hardness.Carbide in point of a knife is the alloy that a kind of tungsten carbide and cobalt are formed, and tungsten carbide therein ensures enough Hardness and wearability, and tungsten carbide particle is then bonded together by the cobalt of relative " softer ", is therefore ensured that and is impacted even in highest Under load, it may have ideally rupture strength.

The head includes receiving portion, and receiving portion upper end is provided with accommodating chamber, and point of a knife lower end uses gap fiting mode intercalation In accommodating chamber, the shape size of the point of a knife lower end is corresponding with the shape size matching inside accommodating chamber.

The point of a knife bottom surface is provided with some projections circumferentially, when tool assembly and work stress evenly, institute State the raised location purposes for being used to when cutter accommodating chamber more than point of a knife is assembled, make axis direction, be specifically projection have it is certain Highly, certain interval can be paved between two fitting surfaces, while during using soldering processes so that the solder of Ban Rong shapes The gap of cutter receiving portion and point of a knife can be sufficient filling with, so when cutter works, even if greatly being impacted, can also be protected Card point of a knife is firmly welded in cutter accommodating chamber, is not had and any is come off and loosen trend and phenomenon.

The utility model compared with prior art, has the advantages that shank tools of the present utility model are utilizing Same volume of timber weight, realize more preferable wearing character, more reliable job stability, and longer service life, this reality With new very thin enough, the sharp shape for realizing tool nose, the shape makes friction resistance of the milling material during rooting out Power substantially reduces, and stock-removing efficiency is substantially improved, and fretting wear reduces, so as to realize the longer service life of cutter, hence it is evident that Reduce operating expenses；Pass through Fig. 6 and Fig. 7, it can be seen that after use, wear height is identical for point of a knife, and wherein Fig. 6 point of a knife remains Remaining tungsten carbide amount 13 will be lacked compared with the remaining tungsten carbide amount 14 of Fig. 7 points of a knife, it follows that less tungsten carbide surplus, meaning More tungsten carbide utilizations, so, when cutter needs to dismantle and replaced, reduce the waste of point of a knife material.

Brief description of the drawings

Fig. 1 is the overall structure diagram of shank tools of the present utility model；

Fig. 2 is the structural representation of point of a knife described in the utility model；

Fig. 3 is point of a knife structural representation of the prior art；

Fig. 4 is the upward view of the utility model point of a knife；

Fig. 5 is the utility model point of a knife and point of a knife Structure Comparison schematic diagram in the prior art；

Fig. 6 is the structural representation after the utility model abrasion；

Fig. 7 is the structural representation after this corner wear of the prior art.

Embodiment

The utility model embodiment is described in further detail below in conjunction with the accompanying drawings.

A kind of shank tools 1 for road milling machine of the present embodiment, including head and shank 3, head include point of a knife And receiving portion, the point of a knife 4 have central axis L with around central axis L-shaped into some working faces, working face corresponds to some straight Footpath, and diameter increases along the direction away from point of a knife 4, it is substantially in cone shape to make point of a knife 4, and the second work department includes the second working face 6, the first work department includes the first working face, and the second working face 6 and the first working face 8 are rotated by inner concave curve around axis respectively Formed, can be seen that top by Fig. 2 and Fig. 5 is the 3rd work department, and the 3rd work department working face 5 is in umbrella, is had on the whole straight Footpath a；Working face 6 and working face 5 co-own diameter a, and both are connected by circular arc or crest line transition；Working face 8, it has diameter B and diameter c, and diameter b is co-owned with working face 6, both are connected by circular arc or crest line transition；Can intuitively it see Arrive, diameter a is less than diameter b, and diameter b is less than diameter c, and diameter a size range exists in 5mm to 50mm, diameter b size range 60mm to 100mm, diameter c size range are in 110mm to 150mm.In design process of the present utility model, by by point of a knife Several recess materials are cut off on 4 bottom-working surfaces 8 to be transferred in top work surface 5 and working face 6, while by point of a knife 4 The angle α of working face 5, diameter a ＜ diameter b on point of a knife, relative to traditional mode as shown in figure 3, a1=b1, penetration capacity carry Height, reduce cutting resistance, it is ensured that the high speed of travel and production efficiency of machine, 5.1 and 6.1 be respectively two work in Fig. 3 Face, 5.1 be top work surface, and 4.1 points of a knife of the prior art are overall.

The outside of first work department is provided with some depressions 9 circumferentially.

The drift angle scope of 3rd work department is 130 ° -140 °.

The point of a knife 4 is made up of superhard alloy material.

Receiving portion upper end is provided with accommodating chamber 1.1, and accommodating chamber 1.1 is formed for the drilling form of blind cylindrical hole formula, by surpassing Point of a knife 4 made of hard alloy is installed in the accommodating chamber 1.1 with coaxial manner, meanwhile, the installation locating surface 10 of point of a knife 4 Diameter c and the diameter of accommodating chamber 1.1 match, both using gap fiting mode assemble, meanwhile, as shown in figure 4, point of a knife The convex point 11 of three is circumferentially dispersed with 4 supporting surface 10, it is contemplated that these convex points are equably in circumference 13 On be distributed on supporting surface 10, such benefit be assembling and work when stress evenly, the lower end of point of a knife 4 is matched somebody with somebody using gap In accommodating chamber 1.1, the shape size of the lower end of point of a knife 4 matches pair the intercalation of conjunction mode with the shape size inside accommodating chamber Should.

It should be noted that the accompanying drawing of the present embodiment uses using very simplified form and non-accurately ratio, It is only used for convenience, lucidly aids in illustrating embodiment of the present utility model.

It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can With the other embodiment of understanding.

Those listed above it is a series of describe in detail only for the application feasibility embodiment specifically It is bright, they simultaneously be not used to limitation application protection domain, all equivalent implementations done without departing from the application skill spirit or Change should be included within the protection domain of the application.

Claims

1. a kind of shank tools for road milling machine, including head, it is characterised in that：Head includes point of a knife, and point of a knife includes First work department, the first work department are extended with the second work department and the 3rd work department, the 3rd work successively to cutter feed direction The top surface in portion is umbrella working face, and the outside of first work department is provided with some depressions circumferentially.

A kind of 2. shank tools for road milling machine according to claim 1, it is characterised in that：During the point of a knife is provided with Axis, the second work department include the second working face, and the first work department includes the first working face, the second working face and the first working face Rotated and formed around axis by inner concave curve respectively.

A kind of 3. shank tools for road milling machine according to claim 1, it is characterised in that：First work department and the The junction of two work departments is First Transition area, and the junction between the second work department and the 3rd work department is the second transition region, The cross-sectional diameter in First Transition area is more than the cross-sectional diameter of the second transition region.

A kind of 4. shank tools for road milling machine according to claim 3, it is characterised in that：The First Transition area Vertical section both sides with the second transition region are camber line or crest line.

A kind of 5. shank tools for road milling machine according to claim 3, it is characterised in that：Second transition region is transversal The diameter range in face is 5mm-50mm, and the diameter range of First Transition area cross section is between 60mm-100mm, the first work department Basal diameter scope is 110mm-150mm.

A kind of 6. shank tools for road milling machine according to claim 1, it is characterised in that：The top of 3rd work department Angular region is 130 ° -140 °.

A kind of 7. shank tools for road milling machine according to claim 1, it is characterised in that：The point of a knife is by superhard Alloy material is made.

A kind of 8. shank tools for road milling machine according to claim 1, it is characterised in that：The head includes holding Receive portion, receiving portion upper end is provided with accommodating chamber, point of a knife lower end using gap fiting mode intercalation in accommodating chamber, the point of a knife lower end Shape size it is corresponding with the shape size matching inside accommodating chamber.

A kind of 9. shank tools for road milling machine according to claim 1, it is characterised in that：The point of a knife bottom surface It is provided with some projections circumferentially.