CN216758313U - Cutter set for processing railhead - Google Patents
Cutter set for processing railhead Download PDFInfo
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- CN216758313U CN216758313U CN202122718215.5U CN202122718215U CN216758313U CN 216758313 U CN216758313 U CN 216758313U CN 202122718215 U CN202122718215 U CN 202122718215U CN 216758313 U CN216758313 U CN 216758313U
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Abstract
The utility model discloses a cutter set for processing a rail head, which comprises a first milling cutter and a second milling cutter, wherein the first milling cutter comprises a first milling cutter body and a first milling cutter outline surface, the first milling cutter body is a disc-shaped milling cutter, and the first milling cutter outline surface is provided with a cutting area on the periphery of the first milling cutter body; the outer contour surface of the first milling cutter is an annular surface formed by a plurality of first contour lines which are closely attached to each other and are parallel to each other; the first profile line comprises a first profile first connecting straight line segment, a first profile first curved segment, a first profile second curved segment, a first profile third curved segment and a first profile second connecting straight line segment which are sequentially connected with one another. The arc radius of the rail shoulder is increased to be more than or equal to 15mm, and the arc radius is connected with the steel rail after the turnout, so that the driving stability is improved. The arc radius of the rail shoulder is reduced to be less than or equal to 14mm, so that the rail head is prevented from being too sharp. The middle is provided with a transition section which is not shorter than 500mm and is used for profile transition, and the smoothness deterioration is avoided. And the cutter is in a special profile shape, and simultaneously meets the machining requirement and the maintenance requirement.
Description
Technical Field
The utility model relates to the field of rail transit, in particular to a cutter set for processing a rail head.
Background
At present, about 2.2 ten thousand groups of No. 9 turnouts of 60kg/m steel rails are paved on the national railways in China, the paving amount is large, the drawing number of a main product is CZ577, the design year generation is 2002, the turnout is suitable for railway lines with the speed per hour being less than or equal to 120km/h, and the lateral passing speed is 35 km/h. Based on-site use feedback statistics, the current No. 9 turnout of the 60kg/m steel rail is mainly used for the I-grade railway main line of a passenger-cargo co-line, the turnout of a departure line of a heavy-duty railway and other turnouts of a station line, the problem of exposure in the use process is more prominent, and the turnout is mainly shown in the following aspects: (1) the turnout geometry has poor holding capacity; (2) the steel rail parts in the frog area are easy to wear, fall blocks and other damages, and the service life is short; (3) by using the embedded sleeve type fastener system, the sleeve is frequently damaged and difficult to replace in the using process, so that huge maintenance and repair workload is caused.
There is a need for a tool that can process optimized rail profiles while facilitating maintenance and solving the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the problem that the geometric dimension of the original turnout in the prior art has poor holding capacity; the steel rail parts in the frog area are easy to wear, fall blocks and other damages, and the service life is short; use embedded sleeve type fastener system, the sleeve pipe damages frequently and changes the difficulty in the use, has caused the problem of huge maintenance work load, provides a cutter unit for railhead processing, adopts special milling cutter of profile, has solved above-mentioned problem.
The utility model provides a cutter set for processing a rail head, which comprises a first milling cutter and a second milling cutter, wherein the first milling cutter comprises a first milling cutter body and a first milling cutter outer contour surface, the first milling cutter body is a disc-shaped milling cutter, and the first milling cutter outer contour surface is provided with a cutting area on the periphery of the first milling cutter body; the outer contour surface of the first milling cutter is an annular surface formed by a plurality of first contour lines which are closely attached to each other and are parallel to each other; the first profile line comprises a first profile first connecting straight line section, a first profile first curved section, a first profile second curved section, a first profile third curved section and a first profile second connecting straight line section, wherein the first profile first connecting straight line section, the first profile first curved section, the first profile second curved section, the first profile third curved section and the first profile second connecting straight line section are sequentially connected, the concavity and convexity of the first profile first curved section, the concavity and convexity of the first profile second curved section and the concavity and convexity of the first profile third curved section are the same, the first profile first curved section is an R13 curved section, the first profile second curved section is an R80 curved section, the first profile third curved section is an R30 curved section, and the first profile second connecting straight line section is a straight line section with a slope of 1: 40.
According to the cutter set for processing the railhead, as a preferable mode, the height difference from the highest point of the first profile first connecting straight line section to the connecting point of the first profile second curved section and the first profile third curved section is 16mm, the transverse distance of the first profile first connecting straight line end is 0.7mm, the transverse distance from the highest point of the first profile first connecting straight line section to the connecting point of the first profile first curved section and the first profile second curved section is 10.5mm, the transverse distance from the highest point of the first profile first connecting straight line section to the connecting point of the first profile second curved section and the first profile third curved section is 28.4mm, and the transverse distance from the highest point of the first profile first connecting straight line section to the connecting point of the first profile third curved section and the first profile second connecting straight line section is 35.5 mm.
The utility model relates to a cutter set for processing railheads, which is characterized in that a first milling cutter body comprises a first cutter disc body, a plurality of first cutter holders and a plurality of first cutter heads, wherein the first cutter disc body is of a disc-shaped structure, the first cutter holders are circumferentially arranged on the periphery of the first cutter disc body, the plurality of first cutter heads are arranged on a radial bearing surface of the first cutter holders, and the first cutter heads form a first milling cutter outer profile surface.
According to the cutter set for machining the rail head, as a preferable mode, the second milling cutter comprises a second milling cutter body and a second milling cutter outer contour surface, the second milling cutter body is a disc-shaped milling cutter, and the second milling cutter outer contour surface is provided with a cutting area corresponding to the periphery of the second milling cutter body; the outer contour surface of the second milling cutter is an annular surface formed by a plurality of second contour lines which are closely attached and parallel to each other; the second profile line comprises a second profile first connecting straight line segment, a second profile first curved segment, a second profile second curved segment, a second profile third curved segment, a second profile fourth curved segment and a second profile second connecting straight line segment, the first connecting straight line segment of the second profile, the first curved segment of the second profile, the second curved segment of the second profile, the third curved segment of the second profile, the fourth curved segment of the second profile and the second connecting straight line segment of the second profile are sequentially connected, the concavity and convexity of the first curved segment of the second profile, the concavity and convexity of the second curved segment of the second profile, the concavity and convexity of the third curved segment of the second profile and the concavity and convexity of the fourth curved segment of the second profile are the same, the first curved segment of the second profile is a curved segment R8, the second curved segment of the second profile is a curved segment R16, the third curved segment of the second profile is a curved segment R60, the fourth curved segment of the second profile is a curved segment R200, and the second connecting straight line segment of the slope 1: 40.
As a preferable mode, the height difference from the highest point of the first connecting straight line section of the second profile to the connecting point of the fourth curved section of the second profile and the third curved section of the second profile is 16mm, the transverse distance of the first connecting straight line end of the second profile is 0.6mm, the transverse distance from the highest point of the first connecting straight line section of the second profile to the connecting point of the third curved section of the second profile and the second curved section of the second profile is 1.4mm, the transverse distance from the highest point of the first connecting straight line section of the second profile to the connecting point of the third curved section of the second profile and the second curved section of the second profile is 10.3mm, the transverse distance from the highest point of the first connecting straight line section of the second profile to the connecting point of the third curved section of the second profile and the fourth curved section of the second profile is 26.8mm, and the transverse distance from the highest point of the first connecting straight line section of the second profile to the connecting point of the fourth curved section of the second profile and the second connecting straight line section of the second profile is 30.8 mm.
The cutter group for machining the railhead comprises a second cutter body, a plurality of second cutter holders and a plurality of second cutter heads, wherein the second cutter body is of a disc-shaped structure, the second cutter holders are circumferentially arranged on the periphery of the second cutter body, the plurality of second cutter heads are arranged on the radial bearing surface of the second cutter holders, and the second cutter heads form a second milling cutter outline surface.
The utility model has the following beneficial effects:
the rail head machining area at the front end of the center rail is machined by a first milling cutter, the rail head machining area at the rear end of the center rail is machined by a second milling cutter, and the transition area is transited by the second milling cutter. Therefore, the strength and the service life of the weak section area at the front end of the point rail can be ensured, and the driving stability is improved in the large section area. The arc radius of the rail shoulder is increased to be more than or equal to 15mm, so that the arc radius is connected with the steel rail after the turnout, and the driving stability is improved. The arc radius of the rail shoulder is reduced to be less than or equal to 14mm, so that the rail head is prevented from being too sharp. The middle is provided with a transition section which is not shorter than 500mm and is used for profile transition, the transition section cannot be too short, otherwise, smoothness is poor. And the cutter is of a special profile, not only can be used for machining, but also can be used for a steel rail grinding wagon, and simultaneously meets the machining requirement and the maintenance requirement.
Drawings
FIG. 1 is a schematic view of a tool set for railhead machining;
FIG. 2 is a schematic view of a first milling cutter of a cutter set for railhead machining;
FIG. 3 is a schematic view of a first milling cutter profile of a cutter set for railhead machining;
FIG. 4 is a schematic view of a first profile line of a tool set for railhead machining;
FIG. 5 is a schematic view of a first milling cutter body of a cutter set for railhead machining;
FIG. 6 is a schematic view of a second milling cutter of the cutter set for railhead machining;
FIG. 7 is a schematic view of a second milling cutter profile of a cutter set for railhead machining;
FIG. 8 is a schematic view of a second profile line of a tool set for railhead machining;
fig. 9 is a schematic view of a second milling cutter body of a tool set for railhead machining.
Reference numerals:
1. a first milling cutter; 11. a first milling cutter body; 111. a first cutter head body; 112. a first tool holder; 113. a first cutter head; 12. a first milling cutter outer profile surface; 121. a first profile line; 1211. the first profile first connecting straight segment; 1212. a first profile first curve segment; 1213. a first profile second curve segment; 1214. a first profile third curved segment; 1215. a first profile second connecting straight segment; 2. a second milling cutter; 21. a second milling cutter body; 211. a second cutter head body; 212. a second tool holder; 213. a second cutter head; 22. a second milling cutter outer profile surface; 221. a second profile line; 2211. the second profile first connecting straight segment; 2212. a second profile first curved segment; 2213. a second curved segment of the second profile; 2214. a second profile third curved segment; 2215. a second profile fourth curve segment; 2216. the second profile is a second connecting straight segment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1, a tool set for railhead machining includes a first milling cutter 1 and a second milling cutter 2.
As shown in fig. 2, the first milling cutter 1 includes a first milling cutter body 11 and a first milling cutter outer contour surface 12, the first milling cutter body 11 is a disk-shaped milling cutter, and the first milling cutter outer contour surface 12 is provided with an outer peripheral cutting region with the first milling cutter body 11.
As shown in fig. 3, the first milling cutter outer profile 12 is a torus formed by a plurality of mutually closely attached and mutually parallel first profile lines 121.
As shown in fig. 4, the first profile line 121 includes a first profile first connecting straight line segment 1211, a first profile first curved segment 1212, a first profile second curved segment 1213, a first profile third curved segment 1214 and a first profile second connecting straight line segment 1215, the first profile first connecting straight line segment 1211, the first profile first curved segment 1212, the first profile second curved segment 1213, the first profile third curved segment 1214 and the first profile second connecting straight line segment 1215 are sequentially connected, the concavity and convexity of the first profile first curved segment 1212, the concavity and convexity of the first profile second curved segment 1213 and the concavity and convexity of the first profile third curved segment 1214 are the same, the first profile first curved segment 1212 is a curved segment R13, the first profile second curved segment 1213 is a curved segment R80, the first profile third curved segment 1214 is a curved segment R30, and the slope of the first profile second connecting straight line segment 1215 is 1: 40. The height difference between the highest point of the first profile first connecting straight line section 1211 and the connecting point of the first profile second curved section 1213 and the first profile third curved section 1214 is 16mm, the transverse distance between the first connecting straight line end of the first profile is 0.7mm, the transverse distance between the highest point of the first profile first connecting straight line section 1211 and the connecting point of the first profile first curved section 1212 and the first profile second curved section 1213 is 10.5mm, and the transverse distance between the highest point of the first profile first connecting straight line section 1211 and the connecting point of the first profile second curved section 1213 and the first profile third curved section 1214 is 28.4mm, and the transverse distance between the highest point of the first profile first connecting straight line section 1211 and the connecting point of the first profile second curved section 1214 and the first profile second curved section 1214 is 35.5 mm.
As shown in fig. 5, the first milling cutter body 11 includes a first cutter head body 111, a plurality of first cutters 112 and a plurality of first cutting heads 113, the first cutter head body 111 is in a disc-shaped structure, the first cutters 112 are circumferentially mounted on the outer periphery of the first cutter head body 111, the plurality of first cutting heads are arranged on radial bearing surfaces of the first cutters 112, and the first cutting heads 113 form the first milling cutter outer profile 12.
As shown in fig. 6, the second milling cutter 2 includes a second milling cutter body 21 and a second milling cutter outer profile surface 22, the second milling cutter body 21 is a disk-shaped milling cutter, and the second milling cutter outer profile surface 22 is provided with an outer peripheral cutting region with the second milling cutter body 21.
As shown in fig. 7, the second milling cutter outer contour surface 22 is a ring surface formed by a plurality of second contour lines 221 which are closely attached and parallel to each other.
As shown in fig. 8, second profile line 221 includes a second profile first connecting straight line segment 2211, a second profile first curved segment 2212, a second profile second curved segment 2213, a second profile third curved segment 2214, a second profile fourth curved segment 2215 and a second profile second connecting straight line segment 2216, second profile first connecting straight line segment 2211, second profile first curved segment 2212, second profile second curved segment 2213, second profile third curved segment 2214, second profile fourth curved segment 2215 and second profile second connecting straight line segment 2216 sequentially meet, the concavity and convexity of second profile first curved segment 2212, the concavity and convexity of second profile second curved segment 2213, the concavity and convexity of second profile third curved segment 2214 and the concavity of second profile fourth curved segment 2215 are the same, second profile first curved segment 2212 is a curved segment 22126R, the second profile curved segment 2213 is a curved segment 22124R curved segment 22124, and the second profile second curved segment 2215 is a curved segment 2215R 3R 60, the second curved segment 2214R 3R 24 is a curved segment 22124R 24, second profile second connecting straight line segment 2216 is a straight line segment with a slope of 1: 40. The difference in height between the highest point of the first straight connecting line segment 2211 of the second profile and the connecting point of the fourth curved segment 2215 of the second profile and the third curved segment 2214 of the second profile is 16mm, the transverse distance between the end of the first straight connecting line of the second profile is 0.6mm, the transverse distance between the highest point of the first straight connecting line segment 2211 of the second profile and the connecting point of the third curved segment 2214 of the second profile and the second curved segment 2213 of the second profile is 1.4mm, the transverse distance between the highest point of the first straight connecting line segment 2211 of the second profile and the connecting point of the third curved segment 2214 of the second profile and the second curved segment 2213 of the second profile is 10.3mm, and the transverse distance between the highest point of the first straight connecting line segment 2211 of the second profile and the connecting point of the third curved segment 2214 of the second profile and the connecting point of the fourth curved segment 2215 of the second profile is 26.2218 mm, and the transverse distance between the highest point of the first straight connecting point of the second curved segment 2211 of the second curved segment 2215 of the second profile and the connecting point of the second curved segment 2216 mm is 30.8 mm.
As shown in fig. 9, the second milling cutter body 21 includes a second cutter head 211, a plurality of second cutters 212 and a plurality of second cutting heads 213, the second cutter head 211 is a disc-shaped structure, the second cutters 212 are circumferentially mounted on the outer periphery of the second cutter head 211, the plurality of second cutting heads 213 are disposed on the radial bearing surface of the second cutter head 212, and the second cutting heads 213 form the second milling cutter outer profile 22.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A cutter set for railhead machining, characterized in that: the milling cutter comprises a first milling cutter (1) and a second milling cutter (2), wherein the first milling cutter (1) comprises a first milling cutter body (11) and a first milling cutter outer contour surface (12), the first milling cutter body (11) is a disc-shaped milling cutter, and the first milling cutter outer contour surface (12) is arranged on a peripheral cutting area of the first milling cutter body (11); the outer profile surface (12) of the first milling cutter is an annular surface formed by a plurality of first profile lines (121) which are closely attached and parallel to each other; the first profile line (121) comprises a first profile first connecting straight line section (1211), a first profile first curved section (1212), a first profile second curved section (1213), a first profile third curved section (1214) and a first profile second connecting straight line section (1215), the first profile first connecting straight line section (1211), the first profile first curved section (1212), the first profile second curved section (1213), the first profile third curved section (1214) and the first profile second connecting straight line section (1215) are sequentially connected, the concavity and convexity of the first profile first curved section (1212), the concavity and convexity of the first profile second curved section (1213), the concavity and convexity of the first profile third curved section (1214) are the same, the concavity and convexity of the first profile first curved section (1212) is R13 curved section, the concavity and convexity of the first profile second curved section (1213) is R80, and the concavity and convexity of the first profile second curved section (12183) is R30, the first profile second connecting straight line segment (1215) is a straight line segment having a slope of 1: 40.
2. A tool set for railhead machining according to claim 1, characterized in that: the height difference between the highest point of the first profile first connecting straight line segment (1211) and the connecting point of the first profile second curved segment (1213) and the first profile third curved segment (1214) is 16mm, the transverse distance between the first profile first connecting straight line segment is 0.7mm, the transverse distance between the highest point of the first profile first connecting straight line segment (1211) and the connecting point of the first profile first curved segment (1212) and the first profile second curved segment (1213) is 10.5mm, the transverse distance between the highest point of the first profile first connecting straight line segment (1211) and the connecting point of the first profile second curved segment (1213) and the first profile third curved segment (1214) is 28.4mm, and the transverse distance between the highest point of the first profile first connecting straight line segment (1211) and the connecting point of the first profile third curved segment (1214) and the connecting point of the first profile second curved segment (1215) is 35.5 mm.
3. A tool set for railhead machining according to claim 1, characterized in that: first milling cutter body (11) include first cutter head (111), a plurality of first cutter holder (112) and a plurality of first tool bit (113), first cutter head (111) are the disc structure, first cutter holder (112) circumference is installed first cutter head (111) periphery, and is a plurality of first the tool bit sets up on the radial bearing surface of first cutter holder (112), first tool bit (113) are constituteed first milling cutter profile (12).
4. A tool set for railhead machining according to claim 1, characterized in that: the second milling cutter (2) comprises a second milling cutter body (21) and a second milling cutter outer profile surface (22), the second milling cutter body (21) is a disc-shaped milling cutter, and the second milling cutter outer profile surface (22) is arranged on the outer periphery cutting area of the second milling cutter body (21); the outer profile surface (22) of the second milling cutter is an annular surface formed by a plurality of second profile lines (221) which are mutually closely attached and mutually parallel; the second profile line (221) comprises a second profile first connecting straight line segment (2211), a second profile first curved segment (2212), a second profile second curved segment (2213), a second profile third curved segment (2214), a second profile fourth curved segment (2215) and a second profile second connecting straight line segment (2216), the second profile first connecting straight line segment (2211), the second profile first curved segment (2212), the second profile second curved segment (2213), the second profile third curved segment (2214), the second profile fourth curved segment (2215) and the second profile second connecting straight line segment (2216) are sequentially connected in a sequential manner, the concavity and convexity of the second profile first curved segment (2212), the concavity and convexity of the second profile second curved segment (2213), the concavity and concavity of the second profile third segment (2214) and the concavity of the second profile second curved segment (2215) are the same, and concavity of the second profile second curved segment (22125) are the same as those of the second profile first connecting straight line segment (2211), the second curved section (2213) of the second profile is an R16 curved section, the third curved section (2214) of the second profile is an R60 curved section, the fourth curved section (2215) of the second profile is an R200 curved section, and the second connecting straight line section (2216) of the second profile is a straight line section with the slope of 1: 40.
5. A set of tools for railhead machining according to claim 4, characterized in that: the height difference between the highest point of the first connecting straight line section (2211) of the second profile to the connecting point of the fourth curved section (2215) of the second profile and the third curved section (2214) of the second profile is 16mm, the transverse distance between the first connecting straight line section of the second profile is 0.6mm, the transverse distance between the highest point of the first connecting straight line section (2211) of the second profile to the connecting point of the third curved section (2214) of the second profile and the second curved section (2213) of the second profile is 1.4mm, the transverse distance between the highest point of the first connecting straight line section (2211) of the second profile to the connecting point of the third curved section (2214) of the second profile and the second curved section (2213) of the second profile is 10.3mm, the transverse distance between the highest point of the first connecting straight line section (2211) of the second profile to the connecting point of the third curved section (2214) of the second profile and the fourth curved section (2215) of the second profile is 26.8mm, and the transverse distance between the connecting point of the second curved section 2211) of the second profile and the second curved section (2215) of the second profile The transverse distance of the connecting point of the connecting straight line segment (2216) is 30.8 mm.
6. A set of tools for railhead machining according to claim 5, characterized in that: the second milling cutter body (21) comprises a second cutter head body (211), a plurality of second cutter holders (212) and a plurality of second cutter heads (213), the second cutter head body (211) is of a disc-shaped structure, the second cutter holders (212) are circumferentially installed on the periphery of the second cutter head body (211) and are a plurality of the second cutter heads (213) are arranged on the radial bearing surface of the second cutter holders (212), and the second cutter heads (213) form the outer profile surface (22) of the second milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122718215.5U CN216758313U (en) | 2021-11-08 | 2021-11-08 | Cutter set for processing railhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122718215.5U CN216758313U (en) | 2021-11-08 | 2021-11-08 | Cutter set for processing railhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216758313U true CN216758313U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122718215.5U Active CN216758313U (en) | 2021-11-08 | 2021-11-08 | Cutter set for processing railhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216758313U (en) |
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2021
- 2021-11-08 CN CN202122718215.5U patent/CN216758313U/en active Active
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