Rough milling cutter

Abstract

The utility model discloses a rough milling cutter. The rough milling cutter comprises a group of cutter heads, a plurality of blade groups and a connecting piece, the blade groups are in one-to-one correspondence with the cutter heads, each blade group comprises a plurality of blades, the plurality of blades of the blade groups are circumferentially and uniformly arranged on the corresponding cutter heads respectively and are sequentially arranged in the axial direction, and a grinding radian attached to the outer surface of a steel rail is formed in the cross section direction; and the connecting piece is arranged between the blade and the cutter head and is used for detachably mounting the blade on the cutter head. According to the rough milling cutter provided by the utility model, the blades are arranged on the cutter head according to the shape of the outer surface of the rail body and are combined, the blades are circumferentially and uniformly arranged on the cutter head and are sequentially arranged along the axial direction, and the grinding radian attached to the outer surface of the steel rail is formed in the cross section direction, so that the rough milling cutter can be attached to the outer surface of the rail body in a large area during rough milling; the rough milling efficiency is improved, and sufficient rough milling precision is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail rough milling, in particular to a rough milling cutter. Background Art

[0002] In rail rough milling, rough grinding is often used, but this process is inefficient. Therefore, to improve efficiency, current processes have shifted to milling instead of grinding. For example, Chinese Patent No. 201410501418.0 discloses a rail weld full-section milling device comprising a movable worktable mounted on a movable bed, equipped with two milling units symmetrically positioned on either side of the rail to be machined.

[0003] For the above-mentioned existing technology, if conventional milling cutters are used in process improvements, there will be a problem of poor matching with the outer surface of the rail, resulting in low efficiency. Therefore, in order to match and achieve the purpose of improving efficiency by replacing grinding with milling, how to use a set of rough milling tools to meet the requirements of the full-section milling processing path of the rail is a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of the present invention is to overcome the above technical deficiencies and propose a rough milling tool to solve the technical problem that the existing technology cannot meet the requirements of the full-section milling processing path of the rail by using a set of rough milling tools.

[0005] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a rough milling cutter, comprising:

[0007] A set of cutterheads;

[0008] a plurality of blade groups, each corresponding to the cutter disc, each including a plurality of blades, each blade group being evenly arranged circumferentially on the corresponding cutter disc and arranged sequentially along the axial direction to form a grinding arc that fits the outer surface of the rail in the cross-sectional direction; and

[0009] A connecting piece is provided between the blade and the cutter disc and is used for detachably mounting the blade on the cutter disc.

[0010] In some embodiments, a groove is provided on the outer side of the cutter disc, and the blade is arranged in the groove.

[0011] In some embodiments, the blade group includes a first square blade, an inner R13 blade, and an inner R80 blade, wherein there are at least seven layers of blades in sequence along the axial direction of the cutter disc, and the seven layers of blades are arranged in sequence as a first square blade, an inner R80 blade, three layers of inner R13 blades, and two layers of square blades, for rough milling the rail head.

[0012] In some embodiments, the outer side of the cutter disc is provided with an arc-shaped outer edge, and the blades are arranged on the outer edge.

[0013] In some embodiments, the blade group includes a second square blade, an outer R25 blade, an outer R8 blade and a first outer R400 blade, wherein there are at least five layers of blades in sequence along the axial direction of the cutter disc, and the five layers of blades are arranged in sequence as two layers of first outer R400 blades, outer R25 blades, outer R8 blades and second square blades, which are used for rough milling the lower jaw of the rail head.

[0014] In some embodiments, the blade group includes a third square blade, an outer R20 blade, an outer R40 blade and a second outer R400 blade, wherein there are at least nine layers of blades in sequence along the axial direction of the cutter disc, and the nine layers of blades are arranged in sequence as two layers of second outer R400 blades, two layers of outer R20 blades, two layers of third square blades, outer R40 blades and two layers of square blades, which are used for rough milling the upper jaw of the bottom of the rail.

[0015] In some embodiments, the blade group includes a first inner R2 blade and an inner R4 blade, wherein there are at least two layers of blades in sequence along the axial direction of the cutter disc, and the two layers of blades are arranged in sequence as a first inner R2 blade and an inner R4 blade for rough milling the chamfer of the steel rail.

[0016] In some embodiments, a cylindrical stepped surface is provided on the outer side of the cutter disc, the blades are arranged on the cylindrical stepped surface, and the blade group includes a fourth square blade and a second inner R2 blade, wherein several fourth square blades are arranged in sequence in several layers along the axial direction on the outer cylindrical surface of the cylindrical stepped surface of the cutter disc, and the second inner R2 blade is arranged at the stepped corner of the cylindrical stepped surface for rough milling the bottom of the rail.

[0017] In some embodiments, a tool holder is further included, and the tool disc is mounted on the tool holder.

[0018] In some embodiments, the connecting member includes a torx screw, a mounting hole is provided on the blade, screw holes corresponding to the blades are provided on the cutter head, and the torx screw passes through the mounting hole and is threadedly connected to the screw hole.

[0019] Compared with the existing technology, the rough milling tool provided by the utility model is combined by setting up blades on the cutter disc according to the shape of the outer surface of the rail body. The blades are evenly arranged in a circle on the cutter disc and arranged in sequence along the axial direction, forming a grinding arc that fits the outer surface of the rail in the cross-sectional direction, so that it can fit the outer surface of the rail body over a large area during rough milling, thereby improving the rough milling efficiency and having sufficient rough milling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a rail head rough milling tool provided by an embodiment of the utility model;

[0021] Figure 2 This is a left side view of a rail head rough milling tool provided by an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of a rail head lower jaw rough milling tool provided by an embodiment of the utility model;

[0023] Figure 4 This is a left view of a rail head lower jaw rough milling tool provided by an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of a rough milling tool for the rail body upper jaw of a rough milling tool provided by an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of a rail chamfering rough milling tool provided by an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of a rail bottom rough milling tool provided by an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. Cutter head; 101. Groove; 102. Outer edge; 103. Cylindrical stepped surface;

[0029] 2. Blade set; 21. First square blade; 211. Second square blade; 212. Third square blade; 213. Fourth square blade; 22. Inner R13 blade; 23. Inner R80 blade; 24. Outer R25 blade; 25. Outer R8 blade; 26. First outer R400 blade; 261. Second outer R400 blade; 27. Outer R20 blade; 28. Outer R40 blade; 29. ​​First inner R2 blade; 291. Inner R4 blade; 292. Second inner R2 blade;

[0030] 3. Connectors;

[0031] 4. Tool holder. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] In order to solve the technical problem of how to use a set of rough milling cutters to meet the requirements of the full-section milling processing path of the rail, the utility model provides a rough milling cutter that can achieve the purpose of efficient rough milling of the rail body by the disc milling cutter.

[0034] It should be noted that the rough milling tool described in the present invention is used for but not limited to railroad rails, etc. For the sake of convenience, in the present invention, only the rough milling tool is used for rough milling of railroad rails as an example. The principle of using the rough milling tool in other types of equipment is essentially the same as the principle of using it in railroad rails, so they will not be described here one by one.

[0035] See also Figure 1 and Figure 2 The utility model provides a rough milling tool, comprising a set of cutter discs 1, several blade groups 2 and a connecting member 3; the blade group 2 comprises a plurality of blades, and the plurality of blades of the blade group 2 are respectively evenly arranged in a circumference on the corresponding cutter disc 1 and arranged in sequence along the axial direction, forming a grinding arc that fits the outer surface of the rail in the cross-sectional direction, corresponding to the cross-sectional surface curves of the rail head, the lower jaw of the rail head, the upper jaw of the rail bottom, the rail bottom and the rail chamfer, thereby forming a large-area rough milling effect that fits the outer arc surface of the rail, and improving the rough milling processing efficiency of the rail body; the connecting member 3 is arranged between the blade and the cutter disc 1, and is used for the blade to be detachably mounted on the cutter disc 1, so as to facilitate the adjustment and replacement of the blade.

[0036] In this embodiment, a tool seat 4 is further included, and the cutter disc 1 is mounted on the tool seat 4 .

[0037] In this embodiment, the connecting member 3 includes a plum screw, a mounting hole is provided on the blade, and screw holes corresponding to the blades are provided on the cutter head 1. The plum screw passes through the mounting hole and is threadedly connected to the screw hole for installation and removal of the blade.

[0038] In this embodiment, in order to perform rough milling on the rail head of the rail body, please refer to Figure 1-7A group of cutter discs 1 includes a first cutter disc, a second cutter disc, a third cutter disc, a fourth cutter disc and a fifth cutter disc, wherein the first cutter disc, the second cutter disc, the third cutter disc, the fourth cutter disc and the fifth cutter disc are respectively used for rough milling of the rail head, rough milling of the rail head lower jaw, rough milling of the rail bottom upper jaw, rough milling of the rail chamfer and rough milling of the rail bottom. The outer side of the first cutter disc is provided with a groove 101, and the blade group 2 is arranged in the groove 101, thereby forming a milling surface that fits the rail head; the outer sides of the second cutter disc, the third cutter disc and the fourth cutter disc are provided with an arc-shaped outer edge 102, and the blade group 2 is arranged on the outer edge 102, respectively corresponding to the rail head lower jaw, the rail bottom upper jaw and the rail chamfer to form milling surfaces; the outer side of the fifth cutter disc is provided with a cylindrical step surface 103, and the blade group 2 is arranged on the cylindrical step surface 103, thereby forming a milling surface that fits the rail bottom.

[0039] Example 1

[0040] In this embodiment, in order to achieve a certain milling accuracy for the rail head under the blade combination, please refer to Figure 1 and Figure 2 , using a first cutter disc, the blade group 2 on the first cutter disc includes a first square blade 21, an inner R13 blade 22 and an inner R80 blade 23, wherein there are at least seven layers of blades in the axial direction of the cutter disc 1, and the seven layers of blades are arranged in sequence as a square blade 21, an inner R80 blade 23, three layers of inner R13 blades 22 and two layers of first square blades 21, which are used for rough milling the rail head.

[0041] Example 2

[0042] In this embodiment, in order to perform rough milling on the rail head jaw under the combination of blades, please refer to Figure 3 and Figure 4 A second cutter disc is used, and the blade group 2 on the second cutter disc includes a second square blade 211, an outer R25 blade 24, an outer R8 blade 25 and a first outer R400 blade 26. There are at least five layers of blades in sequence along the axial direction of the cutter disc 1. The five layers of blades are arranged in sequence as two layers of first outer R400 blades 26, outer R25 blades 24, outer R8 blades 25 and second square blades 211, which are used for rough milling the lower jaw of the rail head.

[0043] Example 3

[0044] In this embodiment, in order to perform rough milling on the rail bottom upper jaw after the blade assembly, please refer to Figure 5, using a third cutter disc, the blade group 2 on the third cutter disc includes a third square blade 212, an outer R20 blade 27, an outer R40 blade 28 and a second outer R400 blade 261, wherein there are at least nine layers of blades in sequence along the axial direction of the cutter disc 1, and the nine layers of blades are arranged in sequence as two layers of second outer R400 blades 261, two layers of outer R20 blades 27, two layers of third square blades 212, outer R40 blades 28 and two layers of third square blades 212, which are used for rough milling the upper jaw of the bottom of the rail.

[0045] Example 4

[0046] In this embodiment, in order to rough mill the rail chamfer under the combination of blades, please refer to Figure 6 , using the fourth cutter disc, the blade group 2 on the fourth cutter disc includes a first inner R2 blade 29 and an inner R4 blade 291, wherein there are at least two layers of blades in sequence along the axial direction of the cutter disc 1, and the two layers of blades are arranged in sequence as the first inner R2 blade 29 and the inner R4 blade 291, which are used for rough milling and chamfering of steel rails.

[0047] Example 5

[0048] In this embodiment, in order to perform rough milling on the rail bottom under the combination of blades, please refer to Figure 7 , using the fifth cutter disc, the outer side of the cutter disc 1 on the fifth cutter disc is provided with a cylindrical stepped surface 103, the blade group 2 is arranged on the cylindrical stepped surface 103, the blade group 2 includes a fourth square blade 213 and an inner second R2 blade 292, wherein several fourth square blades 213 are arranged in sequence in several layers along the axial direction on the outer cylindrical surface of the cylindrical stepped surface 103 of the cutter disc 1, and the second R2 blade 292 is arranged at the step corner of the cylindrical stepped surface 103 for rough milling the bottom of the rail.

[0049] It can be understood that the number of blades arranged on each of the above cutter heads forms a group of working tool groups, and each layer of blades is composed of multiple blades distributed circumferentially, and the number can be appropriately increased or decreased according to the actual rough milling situation; in addition, the blades overlap at the head and tail parts along the radial direction to form an uninterrupted rough milling curve.

[0050] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the present invention is explained in detail: under the combination of blades and the shape matching of the cutter disc 1, five groups of cutter discs are formed respectively. The five groups of cutter discs correspond to the rough milling of the rail head, rail head lower jaw, rail bottom upper jaw, rail bottom and rail chamfer, respectively. They can fit the outer curved surface of the rail body over a large area for rough milling, meeting the requirements of the full-section milling processing path of the rail.

[0051] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A rough milling tool, characterized in that: include: A set of cutterheads; a plurality of blade groups, each corresponding to the cutter disc, each including a plurality of blades, each of which is evenly arranged circumferentially on the corresponding cutter disc and arranged in sequence along the axial direction to form a grinding arc that fits the outer surface of the rail in the cross-sectional direction; as well as A connecting piece is provided between the blade and the cutter disc and is used for detachably mounting the blade on the cutter disc.

2. The rough milling tool according to claim 1, characterized in that A groove is provided on the outer side of the cutter disc, and the blade is arranged in the groove.

3. The rough milling tool according to claim 2, characterized in that The blade group includes a first square blade, an inner R13 blade and an inner R80 blade, wherein there are at least seven layers of blades in sequence along the axial direction of the cutter disc, and the seven layers of blades are arranged in sequence as a first square blade, an inner R80 blade, three layers of inner R13 blades and two layers of square blades, for rough milling the rail head.

4. The rough milling tool according to claim 1, characterized in that The outer side of the cutter disc is provided with an arc-shaped outer edge, and the blades are arranged on the outer edge.

5. The rough milling tool according to claim 4, characterized in that The blade group includes a second square blade, an outer R25 blade, an outer R8 blade and a first outer R400 blade, wherein there are at least five layers of blades in sequence along the axial direction of the cutter disc, and the five layers of blades are arranged in sequence as two layers of first outer R400 blades, outer R25 blades, outer R8 blades and second square blades, which are used for rough milling the lower jaw of the rail head.

6. The rough milling tool according to claim 4, characterized in that The blade group includes a third square blade, an outer R20 blade, an outer R40 blade and a second outer R400 blade, wherein there are at least nine layers of blades in sequence along the axial direction of the cutter disc, and the nine layers of blades are arranged in sequence as two layers of second outer R400 blades, two layers of outer R20 blades, two layers of third square blades, outer R40 blades and two layers of square blades, which are used for rough milling the upper jaw of the bottom of the rail.

7. The rough milling tool according to claim 4, characterized in that The blade set includes a first inner R2 blade and an inner R4 blade, wherein there are at least two layers of blades in sequence along the axial direction of the cutter disc, and the two layers of blades are arranged in sequence as the first inner R2 blade and the inner R4 blade for rough milling the chamfer of the steel rail.

8. The rough milling tool according to claim 1, characterized in that A cylindrical stepped surface is provided on the outer side of the cutter disc, and the blades are arranged on the cylindrical stepped surface. The blade group includes a fourth square blade and a second inner R2 blade, wherein several fourth square blades are arranged in sequence in several layers along the axial direction on the outer cylindrical surface of the cylindrical stepped surface of the cutter disc, and the second inner R2 blades are arranged at the stepped corners of the cylindrical stepped surface for rough milling the bottom of the rail.

9. The rough milling tool according to claim 1, characterized in that It also includes a tool seat, on which the tool disc is mounted.

10. The rough milling tool according to claim 1, characterized in that The connecting piece includes a plum screw, a mounting hole is provided on the blade, and screw holes corresponding to the blades are provided on the cutter head. The plum screw passes through the mounting hole and is threadedly connected to the screw hole.

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