CN111843007A - Combined tool for online milling of steel rail - Google Patents
Combined tool for online milling of steel rail Download PDFInfo
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- CN111843007A CN111843007A CN202010760092.9A CN202010760092A CN111843007A CN 111843007 A CN111843007 A CN 111843007A CN 202010760092 A CN202010760092 A CN 202010760092A CN 111843007 A CN111843007 A CN 111843007A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000003801 milling Methods 0.000 title claims abstract description 68
- 238000005520 cutting process Methods 0.000 claims abstract description 161
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 230000007246 mechanism Effects 0.000 description 10
- 230000000295 complement effect Effects 0.000 description 5
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- 238000003754 machining Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 238000000429 assembly Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/12—Cutters specially designed for producing particular profiles
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- Machines For Laying And Maintaining Railways (AREA)
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Abstract
The invention relates to a combined cutter for online milling of a steel rail, which comprises a cutter head assembly and a cutting piece, wherein the cutter head assembly is connected with a driving device, and the cutting piece is arranged on the cutter head assembly so as to realize the forming processing of different areas on two sides of a center line of the rail top surface of the steel rail (4). The combined cutter for online milling of the steel rail solves the problems of self-excited vibration, complex tool setting adjustment process, low use economy of the blade and the like in the using process of the existing cutter, and improves the field operation efficiency.
Description
Technical Field
The invention relates to the technical field of forming tools for repairing steel rail contours, in particular to a combined tool for online milling of steel rails.
Background
The steel rail is one of the key factors for guaranteeing the operation safety of rail transit, and along with the long-time continuous, frequent and complex interaction force between the wheel rails, the surface of the steel rail can generate the defects of cracks, fat edges, wave-shaped abrasion and the like, thereby bringing adverse effects on the safety, the stability and the comfort in the running process of a train. Therefore, the worn steel rail needs to be repaired by milling, and the current common repair method is as follows: rough milling and finish milling or rough milling and grinding, wherein the main purpose of finish milling or grinding is to remove the tool connecting edge left by rough milling and improve the smoothness of the steel rail. The existing finish milling cutter adopts a wide-blade for forming and milling, takes standard rail profile or optimal rail profile as a reference, uses the wide-blade forming blade to fit the rail profile in a tool setting mode, and then installs the cutter on a finish milling spindle of a rail milling rail vehicle after the tool setting is finished to carry out finish milling processing, remove tool receiving edges and improve the smoothness of the rail.
The existing four-blade wide-blade finish milling cutter adopts 4 wide-blade blades and is installed on a cutter clamp, each blade utilizes two blade pressing blocks, and then is fastened through two compression screws. An adjusting gasket is arranged between the bottom of the blade and the tool holder, and the heights of the left end and the right end of the adjusting gasket are adjusted through two adjusting jackscrews at the bottom of the tool holder, so that the profile of the cutting edge of the blade is changed. And the adjusting jackscrew at the bottom of the tool holder is adjusted, so that the rotating projection of the cutting edges of the four blades on the axial plane is fitted to form a profile consistent with the standard steel rail profile or the optimal steel rail profile. Thereby carrying out the finish milling operation of the rail top.
The main disadvantages of the prior four-blade wide-blade finish milling cutter scheme are as follows:
1) the maximum rotation diameter of the cutter is 70mm, the cutter is specified to be close to the rotation center of the cutter as the inner side, the cutter is specified to be far away from the rotation center of the cutter as the outer side, and then when the rotation speed of the cutter is a fixed value, the linear speed of the innermost cutting edge is only 29 percent (about one third) of the linear speed of the outermost cutting edge. The gradient distribution of the cutting edge speed of the whole blade is too large, so that the ironing effect of the innermost cutting edge is greater than the cutting effect, and the operation effect is poor.
2) If the wide cutting edge of the cutter completely participates in cutting, the cutting specific pressure is insufficient, and the cutter can generate self-excited vibration, so that the processing quality is influenced.
3) The tool setting adjusting process is complicated, the tool setting time is too long, and the acting efficiency is influenced.
The wide-edge blade of the cutter has great cutting resistance in the cutting process, and the blade is easy to damage. If damage occurs in the machining process, the whole blade needs to be discarded and replaced by a new blade, and the blade is not economical to use.
4) The cutter can only be used for finish milling of the top surface of the steel rail, and cannot solve the problem of the fat edge disease of the steel rail.
For example, the Chinese patent with the publication number of CN104308235A discloses a full-section milling device for a steel rail welding seam, which relates to a full-section milling device for a steel rail welding seam, and comprises a movable workbench arranged on a movable lathe bed, wherein the movable workbench is provided with two sets of milling units, each set of milling unit comprises a longitudinal moving mechanism, a transverse moving mechanism and a vertical moving mechanism which are driven by a servo motor, the vertical moving mechanism is internally provided with a milling mechanism with a detection device, the movable workbench is provided with a positioning clamp and an iron scrap collecting mechanism for clamping a steel rail to be processed, the movable workbench, the positioning clamp and the milling mechanism are all driven by a hydraulic system, and a lubricating mechanism for providing lubrication for the moving part is arranged on the vertical moving mechanism, and the servo motor and a control circuit of the lubricating mechanism are respectively connected with the electric control system. The invention has the advantages of high processing efficiency, stable quality, reduced labor intensity, environmental protection, good appearance and the like.
Also, as disclosed in chinese patent publication No. CN101716717A, a process for machining the top surface of a steel rail is disclosed, which is implemented according to the following process flow: primary blanking → saw cutting → profiling → secondary blanking → straightening → milling profiling section rail bottom → fine tuning → drilling → milling rail bottom and rail web bolt groove → milling rail head working edge and non-working edge → milling rail top reduced value → quenching → rectification; and the fine adjustment process comprises the following steps: leveling the rail bottom of the steel rail to ensure that the flatness of the rail bottom is less than or equal to 0.5 mm; then, the relative height difference of the rail bottom, the rail top surface and the two sides of the rail head is called out, and the straightness of the two sides of the rail head of the profiling section and the straightness of the rail top surface are detected by a flat ruler, so that the two sides of the rail head of the forming section are 1mm higher than the blank line of the rail raw material section, and the rail top surface of the forming section is 1.5mm higher than the rail top surface of the rail raw material section; and finally, detecting the height difference of the heel end and the rail bottom by using a height difference detection tool and a 1: 40 oblique detection tool. According to the invention, the novel profiling cutter is used for processing the top surface of the 60D40 steel rail, so that smooth transition between the forming section and the transition section and raw materials can be realized, the fitting degree of the processed top surface of the 60D40 steel rail is more perfect, and the processing precision of a product is ensured.
Therefore, the two technical solutions have the following defects: the steel rail finish milling cutter basically adopts the forming milling of a wide-edge blade, the cutter has the condition of poor processing effect more or less, and in addition, the cutter has the defects of overlong cutter setting time, poor cutter setting repeatability and difficulty in quantitative cutter setting, so that the whole rail milling operation efficiency is low.
Disclosure of Invention
Aiming at the current situation of steel rail repair work in China, it is very necessary to design a novel finish milling cutter which is suitable for the use environment.
In order to overcome the technical defects in the prior art, the invention provides the combined cutter for online milling of the steel rail, solves the problems of self-excited vibration, complicated tool setting adjustment process, low use economy of the blade and the like in the using process of the existing cutter, improves the field operation efficiency, and can effectively solve the problems in the background technology.
In order to solve the technical problems, the technical scheme of the combined cutter for online milling of the steel rail provided by the invention is as follows:
the embodiment of the invention discloses a combined cutter for online milling of a steel rail, which comprises a cutter head assembly and a cutting piece, wherein the cutter head assembly is connected with a driving device, and the cutting piece is arranged on the cutter head assembly so as to realize the forming processing of different areas on two sides of a center line of the top surface of the steel rail.
In any of the above aspects, preferably, the impeller assembly includes at least two impellers.
In any of the above schemes, preferably, the cutter head assembly includes a first main cutter head and a second main cutter head, and the first main cutter head and the second main cutter head have the same structure and are bilaterally symmetrical with the center line of the top surface of the steel rail.
In any of the above schemes, preferably, the cutter head assembly further includes a third additional cutter head, and the third additional cutter head is arranged on the second main cutter head, and/or on the first main cutter head.
In any of the foregoing schemes, preferably, the first main cutter comprises a first cutter base, the second main cutter comprises a second cutter base, and the third additional cutter comprises a third cutter base;
the first cutterhead base body and the second cutterhead base body realize the forming processing of different areas on two sides of the center line of the top surface of the steel rail, wherein,
the third cutter head base body is arranged on the first cutter head base body and/or the second cutter head base body.
In any of the above schemes, preferably, the first cutter head base body, the second cutter head base body and the third cutter head base body all have a disc-shaped edge, the lower part of the driving device is respectively connected with the first cutter head base body and the second cutter head base body, and the first main cutter head matching surface and the second main cutter head matching surface are matched with the hole shoulder surface of the driving device.
In any of the above aspects, it is preferable that the disc-shaped rim has a raised point thereon.
In any of the above schemes, preferably, the cutter head further comprises a cutter pocket, wherein the cutter pocket is arranged on the first cutter head base body, the second cutter head base body and the third cutter head base body, and a cutting piece is arranged in the cutter pocket.
In any of the above aspects, preferably, the knife nest is provided in plurality.
In any of the above embodiments, preferably, the plurality of tool pockets have the same or different shapes and are uniformly distributed in the circumferential direction of the disc-shaped edge.
In any of the above solutions, it is preferable that a plurality of the tool pockets are arranged and combined, so that the profile generated by the rotational projection of the cutting edges of the cutting pieces mounted in the tool pockets in the respective axial planes corresponds to the required rail profile, so as to realize the forming of the rail profile.
In any of the above solutions, it is preferable that the cutting elements are evenly distributed in the tool pockets in the circumferential direction of the disc-shaped edge.
In any of the above schemes, preferably, the cutting members are divided into a plurality of groups, and cutting tracks formed by each group of cutting members on the first cutter head base body, the second cutter head base body and the third cutter head base body are consistent.
In any of the above schemes, preferably, each group of the cutting elements on the first cutter head base body, the second cutter head base body and the third cutter head base body has at least two rows of cutting elements, and each cutting element has at least one chip groove.
In any of the above aspects, preferably, there is at least one gauge of cutting elements in each set of cutting elements.
In any of the above aspects, it is preferred that the cutting member has an arcuate hexahedral structure, andor
Is in a square hexahedral structure, wherein,
the surface of the arc hexahedral cutting piece where the cutting edge is located is an arc combined surface.
In any one of the above aspects, it is preferable that the arc hexahedral cutter and the square hexahedral cutter are each provided with N cutting edges.
In any of the above solutions, it is preferred that the cutting edges on the curved hexahedral cutter are provided with at least one strip.
In any of the above solutions, it is preferred that the cutting edges on the square hexahedral cutter are provided with at least 8 strips.
In any of the above schemes, preferably, the cutting pieces on the first cutter head base body, the second cutter head base body and the third cutter head base body are arranged in a staggered manner, the contour tracks formed by the cutting pieces are complementary, and the forming processing of different railhead contours is realized by adjusting the external dimensions of the cutting pieces.
In any one of the above schemes, preferably, the diameter size range of the first cutterhead base body and the second cutterhead base body is 70-300 mm, and preferably, the diameter size range of the first cutterhead base body and the second cutterhead base body is 150-300 mm.
In any one of the above schemes, preferably, the first cutter head base body and the second cutter head base body are integrally formed with the third cutter head base body, respectively.
In any of the foregoing schemes, preferably, the first cutterhead base body and the second cutterhead base body are detachably connected to the third cutterhead base body, respectively.
In any of the foregoing schemes, preferably, the first cutter head base body and the second cutter head base body are connected to the third cutter head base body through a third connecting piece and a fourth connecting piece, respectively.
In any of the above schemes, preferably, the first cutter head base body, the second cutter head base body and the third cutter head base body are respectively connected with the cutting member through the first connecting piece, the second connecting piece and the third connecting piece.
In any of the above aspects, it is preferable that the curved hexahedral structure cutter includes a first double circular arc cutter and a second double circular arc cutter, and the square hexahedral structure cutter includes a square cutter.
Compared with the prior art, the combined tool for online milling of the steel rail provided by the embodiment of the invention has the following beneficial effects:
1. the combined cutter comprises at least two cutter head assemblies, each cutter head assembly is provided with a cutter head base body with a disc-shaped edge provided with a convex point, a plurality of cutter sockets are arranged on the convex point and the edge area of the edge, replaceable cutting pieces, particularly hard alloy milling cutters, are arranged in the cutter sockets, after the cutting pieces are arranged on each cutter head base body, the cutting heads are matched with the matching surface of a first main cutter head, different areas of a steel rail can be formed and processed after the matching surface of a second main cutter head, the center line of the top surface of the steel rail is divided into two sides, the first main cutter head is used for forming the part of the top surface of one side of the steel rail, the second main cutter head is used for forming the part of the top surface of the other side of the steel rail, a third additional cutter head can be arranged on the second main cutter head and the first main cutter head, a plurality of cutter sockets are arranged on the edge area of the third additional, the forming processing of the side part of the steel rail can be further realized, the milling efficiency can be improved, and the service life is longer.
2. In the processing process, the cutting edge generates transverse shearing slippage in the tangential direction, and the surface finish of a processing surface is improved.
3. The rotary diameter of the cutter head is large, the cutting linear velocity difference of the cutting edge is reduced, and the cutting capacity of the cutting edge is improved.
4. The tool setting is convenient, and the field operation efficiency is improved.
5. The arrangement of the cutting piece is beneficial to reducing self-excited vibration in the using process and improving the use economy of the blade.
6. The problem of repairing and processing diseases such as steel rail fat edges and the like can be solved by adding the third auxiliary cutter head.
Drawings
The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
FIG. 1 is a schematic view of a preferred embodiment of a gang tool for on-line rail milling in accordance with the present invention;
FIG. 2 is a schematic view of a first main cutter head of the embodiment of FIG. 1 of a gang tool for on-line rail milling in accordance with the present invention;
FIG. 3 is a schematic view of a second main cutter head of the embodiment shown in FIG. 1 of the combined tool for on-line rail milling according to the present invention;
fig. 4 is a third additional cutter head of the embodiment shown in fig. 1 of the combined tool for on-line rail milling according to the invention.
Fig. 5 is a schematic view of a mating surface of a third additional cutter disc in the embodiment of the combined cutter tool for on-line milling of steel rails shown in fig. 1.
Fig. 6 is a schematic structural view of another embodiment of the combined tool for on-line milling of a steel rail according to the present invention.
Fig. 7 is a schematic view of the first and second main cutter head mating surfaces of the embodiment of fig. 6 of the combined tool for on-line rail milling according to the present invention.
The reference numbers in the figures illustrate:
the cutting tool comprises a first main cutter head 1, a second main cutter head 2, a third auxiliary cutter head 3, a 4 steel rail, a 5 cutter nest, a 11 first main cutter head matching surface, a 22 second main cutter head matching surface, a 31 third auxiliary cutter head matching surface, a 101 first cutter head base body, a 102 first double-arc cutting piece, a 103 first connecting piece, a 301 third cutter head base body, a 302 second double-arc cutting piece, a 303 third connecting piece and a 304 square cutting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the invention, the combined cutter for the online milling of the steel rail is mainly used for being arranged on a steel rail milling cutter used on a steel rail online milling device (patent application number: CN 201911042343.3) capable of adjusting the angle of a driving device, thereby completing the online renovation operation of the steel rail, eliminating the surface defects of the steel rail and recovering the standard profile of a rail head.
In the invention: the direction parallel to the steel rail 4 is longitudinal, the direction vertical to the steel rail 4 is transverse, the gravity direction is vertical, the movable subway steel is right, and the other side of the operation direction of the on-line milling vehicle 4 is left.
The combined tool comprises a cutter head assembly, the combined tool comprises at least a first main cutter head 1 and a second main cutter head 2, a first cutter head base body 101 and a second cutter head base body 201, wherein a disc-shaped edge of each of the first main cutter head 1 and the second main cutter head 2 is provided with a convex point, a plurality of cutter pits 5 are arranged on the convex point and the edge area of the edge of each of the first main cutter head 1 and the second main cutter head 2 respectively, replaceable cutting blades are arranged in the cutter pits 5, particularly hard alloy milling cutters are arranged on the cutter pits, each of the first cutter head base body 101 and the second cutter head base body 201 are provided with the cutting blades, and then the first main cutter head matching surface 11 and the second main cutter head matching surface 21 matched through conical surfaces and end surfaces are arranged in a cutting head to perform forming processing on different areas of the steel rail, the two sides are divided by a central line of the top surface of the steel rail, the first cutter head base body 101 corresponds to the forming processing of the, preferably, the first cutter head base body 101 and the second cutter head base body 201 are connected with the third attached cutter head 3 through bolts, the third attached cutter head 3 is provided with a third cutter head base body 301, a plurality of cutter nests 5 are arranged on the edge region of the third cutter head base body 301, replaceable cutting pieces are arranged in the cutter nests 5, the cutting pieces are cutting blades, and the forming processing of the side edge part of the steel rail 4 can be further realized.
At least two kinds of double-arc indexable blades with different specifications are arranged on the cutting blades on the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301, and are arranged in the cutter nests 5 of the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 through compression screws.
The first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are provided with a plurality of cutter sockets 5 in different shapes, and through arrangement and combination of the cutter sockets 5, the outline generated by the rotating projection of the cutting edges of the cutting blades arranged in the cutter sockets 5 in respective axial planes is consistent with the required steel rail outline, so that the railway outline is formed.
The cutting blades are uniformly distributed on the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 in the circumferential direction of the disc-shaped edge of the cutter nest 5, the cutting blades can be divided into a plurality of groups according to different installation positions, and the cutting tracks formed by the cutting blades of each group arranged on the basis of the disc-shaped first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are consistent.
Each set of cutting blades arranged on the basis of the disc-shaped first cutter head base body 101, second cutter head base body 201 and third cutter head base body 301 has at least two rows of cutting blades, and each cutting blade has at least one chip groove.
For the milling track of the contour of the railway railhead, each group of cutting blades has at least two cutting blades with different specifications, the cutting blades arranged on the first cutter head base body 101 and the second cutter head base body 201 are arc hexahedrons, at least 4 cutting edges are arranged, the third cutter head base body 301 is provided with two cutting blades, one cutting blade is the arc hexahedron, the surface where the cutting edge is located is an arc combined surface, the other cutting blade is a square hexahedron, and at least 8 cutting edges are arranged.
Cutting blades of the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are arranged in a staggered mode, the formed profile tracks of the cutting blades are complementary, and forming machining of different rail head profiles (50 kg/m, 60kg/m and the like or other rail profile tracks) is achieved by adjusting the external dimensions of the cutting blades.
For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.
Example 1:
as shown in fig. 1 to 5, an embodiment of the present invention provides a combined tool for online milling of a steel rail, which includes a cutter head assembly, the cutter head assembly is connected to a driving device, and the combined tool further includes a cutting element, the cutting element is disposed on the cutter head assembly, so as to perform forming processing on different areas on two sides of a center line of a top surface of a rail 4 of the steel rail.
As shown in fig. 1 to 5, the cutter head assembly at least comprises two cutter heads, wherein the cutter head assembly comprises a first main cutter head 1 and a second main cutter head 2, the first main cutter head 1 and the second main cutter head 2 are identical in structure, and the two sides of the center line of the top surface of the rail 4 of the steel rail are symmetrical.
In the embodiment of the invention, the cutting piece is a cutting blade, especially a hard alloy milling cutter, after the cutter head assembly is arranged on the driving device, the cutting blade can perform forming processing on different areas of the steel rail 4, the center line of the top surface of the steel rail 4 is divided into two sides, the cutting blade on the first main cutter head 1 corresponds to the forming processing of the top surface part of one side of the steel rail 4, the cutting blade on the second main cutter head 2 corresponds to the forming processing of the top surface part of the other side of the steel rail 4, the tool setting is convenient, and the field operation efficiency is improved.
As shown in fig. 1 to 5, the cutter head assembly further includes a third additional cutter head 3, the third additional cutter head 3 is disposed on the second main cutter head 2, and/or on the first main cutter head 1, the first main cutter head 1 includes a first cutter head base 101, the second main cutter head 2 includes a second cutter head base 201, and the third additional cutter head 3 includes a third cutter head base 301; the first cutter head base body 101 and the second cutter head base body 201 realize the forming processing of different areas on two sides of the center line of the top surface of the rail 4, wherein,
the third cutter head base body 301 is arranged on the first cutter head base body 101 and/or the second cutter head base body 201.
In the embodiment of the invention, the first cutter head base 101 and the second cutter head base 201 can be used together with the cutting blade, so as to further realize the forming processing of the side edge part of the steel rail 4, and the third cutter head base 301 can be respectively arranged on the first cutter head base 101 and the second cutter head base 201 or arranged on the upper part of one of the first cutter head base 101 and the second cutter head base 201, so that when the cutter head works, the cutting blade on the upper part of the third cutter head base 301 can form the steel rail 4, the working efficiency is improved, and the repairing processing problem of the diseases such as fat edge of the steel rail is solved by adding the third cutter head base 301.
As shown in fig. 1 to 5, the first cutterhead base 101, the second cutterhead base 201 and the third cutterhead base 301 all have a disc-shaped edge, the lower portion of the driving device is connected with the first cutterhead base 101 and the second cutterhead base 201 respectively, the first main cutterhead matching surface 11 and the second main cutterhead matching surface 22 are matched with the hole shoulder surface of the driving device, and the disc-shaped edge is provided with a protruding point.
In the embodiment of the present invention, each of the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 has a disc-shaped edge, and the disc-shaped edge is provided with a protruding point, and a plurality of replaceable cutting blades, such as cemented carbide milling cutters in particular, are arranged on the protruding point and the edge area of the edge, so that when the cutter head is used, the working efficiency is higher, and the service life is longer.
As shown in fig. 1 to 5, the gang tool further includes a cutter socket 5, the cutter socket 5 set up in first cutter head base body 101, second cutter head base body 201 and on the third cutter head base body 301, be used for installing the cutting member in the cutter socket 5, the cutter socket 5 is provided with a plurality of, and is a plurality of the shape of cutter socket 5 is the same or different, and the equipartition is respectively on disc edge circumferencial direction, will a plurality of cutter socket 5 arranges the combination, makes the dress in the cutter socket 5 the produced profile of the rotatory projection of the cutting edge of cutting member in respective axle plane accords with required 4 profile of rail conforms to the shaping processing to the railway rail profile, the cutting member equipartition is in disc edge circumferencial direction in the cutter socket 5.
In the embodiment of the present invention, the cutting member is a cutting blade, such as a cemented carbide milling cutter in particular, after the cutter head assembly is mounted on the driving device, the cutting blade can perform forming processing on different regions of the steel rail 4, the center line of the rail top surface of the steel rail 4 is divided into two sides, the cutting blade on the first cutter head base 101 corresponds to the forming processing of the top surface portion of one side of the steel rail 4, the cutting blade on the second cutter head base 201 corresponds to the forming processing of the top surface portion of the rail on the other side of the steel rail 4, and the cutting blade on the third cutter head base 301 further realizes the forming processing of the side portion of the steel rail, thereby improving the field operation efficiency.
As shown in fig. 1 to 5, the cutting elements are divided into a plurality of groups, the cutting tracks formed by each group of cutting elements on the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are consistent, each group of cutting pieces on the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 is provided with at least two rows of cutting pieces, each cutting piece is provided with at least one chip groove, at least one specification cutting piece is arranged in each group of cutting pieces, the cutting pieces are in an arc hexahedron structure and/or a square hexahedron structure, wherein, the surface of the cutting edge of the arc hexahedron cutting piece is an arc combined surface, N cutting edges are arranged on the arc hexahedron cutting piece and the square hexahedron cutting piece, preferably, the cutting edge on the arc hexahedron cutting member is provided with 4 at least, the cutting edge on the square hexahedron cutting member is provided with 8 at least.
In the embodiment of the present invention, the first cutter head base 101, the second cutter head base 201 and the third cutter head base 301 are provided with a plurality of cutter pockets 5 of different shapes, the arrangement and combination of the cutter pockets 5 enable the profiles generated by the rotational projections of the cutting edges of the blades installed in the cutter pockets 5 in the respective axial planes to conform to the required profile of the steel rail, so as to implement the forming processing of the railway profile, the cutting blades are uniformly distributed in the circumferential direction or the convex points on the disc-shaped edge, the cutting blades can be divided into a plurality of groups according to the difference of the installation positions, and the cutting tracks formed by each group of cutting blades arranged on the first cutter head base 101, the second cutter head base 201 and the third cutter head base 301 in the circumferential direction on the disc-shaped edge are consistent, so as to facilitate the cutting, and the cutting tracks formed by the first cutter head base 101, the second cutter head base 201 and the third cutter head base 301 in the, Each group of cutting blades arranged on the second cutter head base body 201 and the third cutter head base body 301 at least has two rows of cutting blades, each cutting blade has at least one chip discharge groove, the cutting blades arranged on the first cutter head base body 101 and the second cutter head base body 201 are arc hexahedrons, at least 4 cutting edges are provided, two types of blades are arranged on the third cutter head base body 301, one type is the arc hexahedron, the surface where the cutting edge is located is an arc combined surface, the other type of cutting blade is a square hexahedron, at least 8 cutting edges are provided, wherein the arc hexahedron structure cutting members comprise a first double-arc cutting member 102 and a second double-arc cutting member 302, the first double-arc cutting member 102 and the second double-arc cutting member 302 are respectively a first double-arc cutting blade and a second double-arc cutting blade, and the square hexahedron structure cutting, the square cutting member 304 is a square cutting blade, and during machining, a transverse shearing slip is generated in the tangential direction of the cutting edge of the blade, so that the surface finish of a machined surface is improved.
As shown in fig. 1 to 5, the cutting pieces on the first cutter head base 101, the second cutter head base 201 and the third cutter head base 301 are arranged in a staggered manner, contour tracks formed by the cutting pieces are complementary, forming processing of different rail head contours is realized by adjusting the overall dimensions of the cutting pieces, the diameter size ranges of the first cutter head base 101 and the second cutter head base 201 are 70-300 mm, the first cutter head base 101 and the second cutter head base 201 are detachably connected with the third cutter head base 301 respectively, preferably, the first cutter head base 101 and the second cutter head base 201 are connected with the third cutter head base 301 through a third connecting piece and a fourth connecting piece respectively, wherein the third connecting piece and the fourth connecting piece are compression screws; preferably, the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are respectively connected with the cutting element through the first connecting piece 103, the second connecting piece 203 and the third connecting piece 303, wherein the cutting element is a cutting blade, and the second connecting piece 203 and the third connecting piece 303 are compression screws.
In the embodiment of the invention, the cutting blades of the first cutter head base body 101, the second cutter head base body 201 and the third cutter head base body 301 are arranged in a staggered manner, the profile tracks formed by the cutting blades are complementary, the forming processing of different rail head profiles (50 kg/m, 60kg/m and the like or other rail profile tracks) is realized by adjusting the external dimensions of the cutting blades, the diameter dimensions of the first cutter head base body 101 and the second cutter head base body 201 are 70-300 mm, preferably, the diameter dimension ranges of the first cutter head base body and the second cutter head base body are 150-300 mm, the cutting blades are arranged in a staggered manner, the profile tracks formed by the cutting blades are complementary, the self-excited vibration in the use process is favorably reduced, the use economy of the cutting blades is improved, the rotation diameters of the first cutter head base body 101 and the second cutter head base body 201 are larger, and the cutting linear velocity difference of the cutting edges is reduced, the cutting capability of the cutting edge is improved.
Example 2:
as shown in fig. 6 and 7, the embodiment of the present invention provides a combined tool for on-line rail milling, which is different from embodiment 1 in that: the first cutter head base body 101 and the second cutter head base body 201 are integrally formed with the third cutter head base body 301 respectively, so that the structure is more compact, the connection strength can be improved, and the structure is firmer.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A combined tool for on-line milling of a steel rail,
including the blade disc subassembly, the blade disc subassembly is connected its characterized in that with drive arrangement: the cutter head assembly is arranged on the cutter head assembly, and different areas on two sides of the center line of the top surface of the steel rail (4) are formed.
2. The combination tool for on-line milling of steel rails according to claim 1, characterized in that: the cutter head assembly at least comprises two cutter heads.
3. A combined tool for on-line milling of steel rails according to claim 1 or 2, characterized in that: the cutter head assembly comprises a first main cutter head (1) and a second main cutter head (2), the first main cutter head (1) and the second main cutter head (2) are identical in structure and are symmetrical to the two sides of the center line of the top surface of the steel rail (4).
4. The combination tool for on-line milling of steel rails according to claim 3, characterized in that: the cutter head assembly further comprises a third auxiliary cutter head (3), and the third auxiliary cutter head (3) is arranged on the second main cutter head (2) or the first main cutter head (1).
5. The combination tool for on-line milling of steel rails according to claim 4, characterized in that: the first main cutterhead (1) comprises a first cutterhead base body (101), the second main cutterhead (2) comprises a second cutterhead base body (201), and the third auxiliary cutterhead (3) comprises a third cutterhead base body (301);
the first cutterhead base body (101) and the second cutterhead base body (201) realize the forming processing of different areas on two sides of the center line of the rail top surface of the steel rail (4), wherein,
the third cutter head base body (301) is arranged on the first cutter head base body (101) and/or the second cutter head base body (201).
6. The combination tool for on-line milling of steel rails according to claim 5, characterized in that: the first cutter head base body (101), the second cutter head base body (201) and the third cutter head base body (301) are all provided with a disc-shaped edge, the lower portion of the driving device is respectively connected with the first cutter head base body (101) and the second cutter head base body (201), and the first main cutter head matching surface (11) and the second main cutter head matching surface (22) are matched with a hole shoulder surface of the driving device.
7. The combination tool for on-line milling of steel rails according to claim 6, characterized in that: the disc-shaped rim has a raised point thereon.
8. The combination tool for on-line milling of steel rails according to claim 7, characterized in that: the cutter head is characterized by further comprising a cutter nest (5), the cutter nest (5) is arranged on the first cutter head base body (101), the second cutter head base body (201) and the third cutter head base body (301), and a cutting piece is arranged in the cutter nest (5).
9. The combination tool for on-line milling of steel rails according to claim 8, characterized in that: the cutter nest (5) is provided with a plurality of cutter nests.
10. The combination tool for on-line milling of steel rails according to claim 8, characterized in that: the shapes of the cutter nests (5) are the same or different and are respectively and uniformly distributed in the circumferential direction of the disc-shaped edge.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760092.9A CN111843007A (en) | 2020-07-31 | 2020-07-31 | Combined tool for online milling of steel rail |
| PCT/CN2021/107282 WO2022022326A1 (en) | 2020-07-31 | 2021-07-20 | Combined cutter for on-line milling of steel rail |
| KR1020237001737A KR20230025003A (en) | 2020-07-31 | 2021-07-20 | Combination cutter for online milling of steel rails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760092.9A CN111843007A (en) | 2020-07-31 | 2020-07-31 | Combined tool for online milling of steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111843007A true CN111843007A (en) | 2020-10-30 |
Family
ID=72953645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010760092.9A Pending CN111843007A (en) | 2020-07-31 | 2020-07-31 | Combined tool for online milling of steel rail |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20230025003A (en) |
| CN (1) | CN111843007A (en) |
| WO (1) | WO2022022326A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399725A (en) * | 2021-07-28 | 2021-09-17 | 四川广正科技有限公司 | Steel rail milling and grinding cutter, milling and grinding blade life simulation experiment device and experiment method |
| CN113584968A (en) * | 2021-08-04 | 2021-11-02 | 中国铁建高新装备股份有限公司 | Movable rail milling vehicle set and rail milling vehicle |
| WO2022022326A1 (en) * | 2020-07-31 | 2022-02-03 | 中国铁建高新装备股份有限公司 | Combined cutter for on-line milling of steel rail |
| CN114226821A (en) * | 2021-12-31 | 2022-03-25 | 深圳市仕兴鸿精密机械设备有限公司 | Disc milling cutter, device and method for intelligent rail machining |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115982887B (en) * | 2022-12-30 | 2024-01-23 | 恒锋工具股份有限公司 | Multi-objective optimization design method for blade arrangement of disc milling cutter for repairing steel rail |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20230025003A (en) | 2023-02-21 |
| WO2022022326A1 (en) | 2022-02-03 |
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