CN113369921A - EMUs axle box node spot facing work frock - Google Patents
EMUs axle box node spot facing work frock Download PDFInfo
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- CN113369921A CN113369921A CN202110684857.XA CN202110684857A CN113369921A CN 113369921 A CN113369921 A CN 113369921A CN 202110684857 A CN202110684857 A CN 202110684857A CN 113369921 A CN113369921 A CN 113369921A
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- axle box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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Abstract
The invention discloses a processing tool for a motor train unit axle box node hole, which comprises a base, a middle supporting structure integrated on the base and an axle box front end supporting structure integrated on the base and close to the front part of an axle box; a joint lead screw assembly is integrated at the position, close to the front end supporting structure of the axle box, of the base, and an axle box top hole tooling assembly is integrated at the position, close to the middle supporting structure, of the base; one side of the base, which is close to the rear end of the axle box, is provided with an axle box right-side jackscrew assembly. The joint hole machining tool supports the axle box through the middle supporting structure and the axle box front end supporting structure, and meanwhile, the joint screw assembly, the axle box top hole tool assembly and the axle box right side jackscrew assembly are used for positioning and machining the joint hole machining operation corresponding to the axle box, so that the transverse displacement and the vertical displacement of the axle box can be effectively avoided, the vibration during machining is reduced, and the workpiece machining precision is ensured.
Description
Technical Field
The invention relates to the technical field of processing operation of an axle box node hole of a motor train unit, in particular to a processing tool of the axle box node hole of the motor train unit, which is suitable for a CRH380B/C, CR platform.
Background
The rotating arm node for the CRH380B/C, CR platform motor train unit bogie is an elastomer formed by compounding rubber and metal, and has the main functions of ensuring the positioning between a bogie frame and a wheel pair and ensuring the longitudinal, transverse, deflection and torsional rigidity required by the running stability of the bogie, so that the requirement on the node performance is higher, and the axle box node is changed into a necessary replacement part for each repair process from the aspect of traffic safety, so that the axle box node refuge rate is greatly improved.
In the prior art, for a repairing-free scheme for the scratch of the axle box node hole of the CRH380B/C, CR platform motor train unit, only the scratch depth of the axle box node hole is widened to 0.5 mm. In the prior art, only a few of axle boxes with scratches on node holes can be solved, and most of the axle boxes still have no solution.
Based on the technical problems, a person skilled in the art needs to develop a machining tool suitable for the axle box node hole of the motor train unit with the CRH380B/C, CR platform.
Disclosure of Invention
The invention aims to provide a machining tool for axle box node holes of a motor train unit, which is novel in structure, capable of solving the problem that scratches of the axle box node holes cannot be repaired due to overrun, and high in practicability, and is suitable for a CRH380B/C, CR platform.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to a processing tool for a joint hole of an axle box of a motor train unit, which comprises:
a base;
a central support structure integrated with the base; and
the axle box front end supporting structure is integrated on the base and close to the front part of the axle box;
a joint lead screw assembly is integrated at the position, close to the front end supporting structure of the axle box, of the base, and an axle box top hole tooling assembly is integrated at the position, close to the middle supporting structure, of the base;
one side of the base, which is close to the rear end of the axle box, is provided with an axle box right-side jackscrew assembly.
Further, the base is made of an S355 plate, and the thickness of the base is not less than 30 mm;
the middle support structure includes:
a first support structure and a second support structure assembled and fixed to the base;
the first supporting structure comprises a quadrilateral frame supporting structure which is formed by fixedly connecting two first plates and two second plates;
the second supporting structure comprises a first vertical plate which is arranged close to the first supporting structure and extends along the vertical direction, and three first supporting plates are arranged on one side of the vertical plate, which is far away from the first supporting structure, at intervals;
the lower end of the first supporting plate is fixedly connected with the base;
the first support plate is configured as a triangular support plate structure.
Further, the axle box front end support structure includes:
a front end support foundation; and
a front support base integrated with the front support base;
a V-shaped groove is formed on one side of the front end supporting seat facing the front end of the axle box, and the front end of the axle box is supported in the V-shaped groove;
the axle box front end support structure further includes:
and the pressing structure is connected with the front end supporting base at one end, extends to the upper part of the axle box at the other end and presses the upper end of the front end of the axle box.
Furthermore, the pressing structure comprises a pressing rod in an L-shaped structure and a pressing screw rod which is integrated at the upper end of the pressing rod and presses the upper end of the front end of the axle box.
Further, the nodal lead screw assembly includes:
the node lead screw bottom plate is fixedly connected with the base;
the node lead screw plate is integrated on one side of the node lead screw bottom plate, which is close to the axle box front end supporting structure; and
the second supporting plates are symmetrically arranged on two sides of the node screw rod plate;
the lower end of the second supporting plate is fixedly connected with the node lead screw bottom plate;
the upper end of the node lead screw plate is provided with a semi-circular arc groove, and the node lead screw plate is provided with three node lead screw holes which are arranged at intervals along the circumferential direction of the semi-circular arc groove;
and a lead screw is arranged in the node lead screw hole, and the end part of the lead screw is abutted against the side surface of the front end of the axle box.
Furthermore, the number of the axle box top hole tool assemblies is two, and the two sets of axle box top hole tool assemblies are symmetrically assembled on the side surface of the middle supporting structure;
axle box apical pore frock subassembly includes:
the third plate is fixedly connected with the base;
one end of the top hole plate is fixedly connected with the third plate, and the other end of the top hole plate vertically extends upwards; and
the third supporting plate is fixedly connected with the top hole plate and the third plate;
axle box apical pore frock subassembly still includes:
a first structural plate integrated with a side of the top orifice plate; and
the second structural plate is fixedly connected between the two first structural plates;
and the upper part of the top hole plate is provided with a top hole.
Further, the right axle box jackscrew assembly comprises:
the right jackscrew supporting plate is fixedly connected with the base;
the right side jackscrew plate is fixedly connected with the right side jackscrew supporting plate and extends along the vertical direction; and
the fourth supporting plate is fixedly connected with the right side jackscrew supporting plate and the right side jackscrew plate;
and the upper part of the right side jackscrew plate is provided with a right side jackscrew hole.
In the technical scheme, the processing tool for the axle box node hole of the motor train unit provided by the invention has the following beneficial effects:
the joint hole machining tool supports the axle box through the middle supporting structure and the axle box front end supporting structure, and meanwhile, the joint screw assembly, the axle box top hole tool assembly and the axle box right side jackscrew assembly are used for positioning and machining the joint hole machining operation corresponding to the axle box, so that the transverse displacement and the vertical displacement of the axle box can be effectively avoided, the vibration during machining is reduced, and the workpiece machining precision is ensured.
The tool is simple to operate, convenient to master by a user, simple in structure, low in manufacturing cost and convenient to maintain, the axle box node hole can be machined, the metal bushing is embedded in the original node hole after machining, the node is pressed in, and the scrappage of the axle box is reduced to 5% from the original 45% by optimizing the process method.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a front view of a motor train unit axle box node hole machining tool provided by an embodiment of the invention;
FIG. 2 is a top view of a motor train unit axle box node hole machining tool provided by an embodiment of the invention;
FIG. 3 is a schematic structural view of a base, a first support structure and a second support structure of a motor train unit axle box node hole machining tool provided by an embodiment of the invention;
FIG. 4 is a schematic structural view of an axle box top hole tool assembly of the motor train unit axle box node hole machining tool provided by the embodiment of the invention;
FIG. 5 is a schematic structural view of a right side jackscrew assembly of an axle box of the motor train unit axle box node hole machining tool provided by the embodiment of the invention;
fig. 6 is a schematic structural diagram of a node lead screw assembly of a motor train unit axle box node hole machining tool provided by an embodiment of the invention.
Description of reference numerals:
1. a base; 2. a first support structure; 3. a second support structure; 4. an axle box front end support structure; 5. a nodal lead screw assembly; 6. an axle box top hole tool assembly; 7. a right side jackscrew component of the axle box; 10. an axle box;
201. a first plate; 202. a second plate;
301. a first vertical plate; 302. a first support plate;
401. a front end support foundation; 402. a front end support seat; 403. a V-shaped groove; 404. pressing and holding the rod; 405. pressing and holding the screw rod;
501. a nodal lead screw baseplate; 502. a node lead screw plate; 503. a second support plate; 504. a semicircular groove; 505. node screw holes;
601. a third plate; 602. a top orifice plate; 603. a third support plate; 604. a first structural panel; 605. a second structural panel;
701. a right jackscrew support plate; 702. a right side wire jacking plate; 703. a fourth support plate; 704. and (4) a right-side jackscrew hole.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6;
the invention relates to a processing tool for a joint hole of an axle box of a motor train unit, which comprises:
a base 1;
a middle support structure integrated in the base 1; and
an axle box front end supporting structure 4 integrated on the base 1 and close to the front part of the axle box;
a node lead screw assembly 5 is integrated at the position of the base 1 close to a front end supporting structure 4 of the axle box, and an axle box top hole tooling assembly 6 is integrated at the position of the base 1 close to a middle supporting structure;
the pedestal 1 has a right axle housing jackscrew assembly 7 on the side near the rear end of the axle housing 10.
Specifically, this embodiment discloses a EMUs axle box node hole processing frock, it has designed middle part bearing structure and axle box front end bearing structure 4 on the base according to the structure of axle box 10, utilizes middle part bearing structure and axle box front end bearing structure 4 to correspond the middle part position and the front end position that support axle box 10 respectively, in addition, according to the position and the hole site requirement in axle box 10 node hole, has designed foretell node lead screw subassembly 5, axle box apical pore frock subassembly 6 and axle box right side jackscrew subassembly 7.
Preferably, the base 1 of the present embodiment is made of an S355 plate, and the thickness of the base 1 is not less than 30 mm;
the middle support structure includes:
a first support structure 2 and a second support structure 3 assembled and fixed to the base 1;
the first supporting structure 2 comprises a quadrilateral frame supporting structure which is formed by fixedly connecting two first plates 201 and two second plates 202;
the second support structure 3 comprises a first vertical plate 301 which is arranged close to the first support structure 2 and extends along the vertical direction, and three first support plates 302 are arranged at intervals on one side of the first vertical plate 301, which is far away from the first support structure 2;
the lower end of the first supporting plate 302 is fixedly connected with the base 1;
the first support plate 302 is configured as a triangular support plate structure.
First, a detailed structure of the base 1 and the middle support structure integrated at the middle position of the base 1 is described, which includes a first support structure 2 and a second support structure 3 arranged along the width direction of the base 1, the middle position of the axle box 10 is supported by the first support structure 2, and the second support structure 3 is at the side to effectively prevent the lateral displacement of the axle box 10.
Preferably, the axle box leading end support structure 4 of the present embodiment includes:
a front end support base 401; and
a front support base 402 integrated with the front support base 401;
a V-shaped groove 403 is formed on the front end support base 402 towards the front end of the axle box 10, and the front end of the axle box 10 is supported in the V-shaped groove 403;
the axle box front end support structure 4 further includes:
a pressing structure having one end connected to the front end support base 401 and the other end extending to the upper portion of the axle box 10 and pressing the upper end of the front end of the axle box 10.
The pressing structure includes a pressing rod 404 having an L-shaped structure, and a pressing screw 405 integrated with an upper end of the pressing rod 404 and pressing an upper end of the front end of the axle box 10.
Next, the structure of the axle box front end supporting structure 4 is described, the axle box front end supporting structure 4 is mainly used for supporting the front end position of the axle box 10, and supports the front end of the axle box 10 through the V-shaped groove 403 on the front end supporting seat 402, and at the same time, in order to avoid vertical displacement and enhance the lateral supporting stability, the above-mentioned pressing structure is designed, and the upper end of the axle box 10 is reinforced and fixed by the pressing rod 404 and the pressing screw 405 of the L-shaped structure.
Further, the method comprises the following steps:
the above-described nodal lead screw assembly 5 includes:
the node lead screw bottom plate 501 is fixedly connected with the base 1;
a node lead screw plate 502 integrated on one side of the node lead screw bottom plate 501 close to the axle box front end supporting structure 4; and
the lower end of the second supporting plate 503 is fixedly connected with the node lead screw bottom plate 501;
the upper end of the node screw plate 502 is provided with a semi-arc groove 504, and the node screw plate 502 is provided with three node screw holes 505 which are arranged at intervals along the circumferential direction of the semi-arc groove 504;
a lead screw is mounted in the node lead screw hole 505, and an end of the lead screw abuts against a side surface of the front end of the axle box 10.
In order to process the node hole at the front end of the axle box 10 correspondingly, a node lead screw assembly 5 is designed on the side surface of the axle box front end support structure 4, three lead screws are positioned by three node lead screw holes 505 distributed in the circumferential direction of the semi-arc groove 504, and the lead screws are mounted and abutted against the side surface of the front end of the axle box 10.
Preferably, the number of the axle box top hole tool assemblies 6 in the embodiment is two, and the two sets of axle box top hole tool assemblies 6 are symmetrically assembled on the side surface of the middle supporting structure;
axle box apical pore frock subassembly 6 includes:
a third plate 601 fixedly connected with the base 1;
a top orifice plate 602, one end of which is fixedly connected with the third plate 601 and the other end of which extends vertically upwards, wherein the top orifice plate 602 is arranged close to the axle box 10; and
a third support plate 603 fixedly connected to both the top aperture plate 602 and the third plate 601;
axle box apical pore frock subassembly 6 still includes:
a first structural plate 604 integrated on the side of the top aperture plate 602; and
a second structural panel 605 attached between the two first structural panels 604;
the top hole plate 602 has a top hole 606 formed in an upper portion thereof.
The structure of the axle box top hole tool assembly 6 is described in detail, two sets of axle box top hole tool assemblies 6 are symmetrically arranged according to the position and the processing requirement of the top hole 606 of the axle box 10, and the top hole 606 on the top hole plate 602 is utilized to facilitate the processing of the top hole node.
Preferably, the right axle box jackscrew assembly 7 of the present embodiment includes:
a right jackscrew support plate 701 fixedly connected with the base 1;
a right side jack screw plate 702 fixedly connected to the right side jack screw support plate 701 and extending in the vertical direction; and
a fourth support plate 703 fixedly connected to both the right jackscrew support plate 701 and the right jackscrew plate 702;
the upper portion of the right side jackscrew plate 702 is provided with a right side jackscrew hole 704.
The tool disclosed by the embodiment is mainly used for processing an axle box node hole with the damage exceeding the limit of the node through a boring mill, and the diameter of the axle box node hole is processed from 135(0, +0.04) mm to 141(0, +0.046) mm. The position relation of an axle box bearing hole and a node hole is detected by using three coordinates, a processing platform is fixed on a boring machine, an axle box 10 is installed on a tool, the axle box 10 and the tool are firmly fixed through the corresponding components, the position relation of the axle box bearing hole and the node hole is input into the boring machine, the boring machine processes the axle box node installation hole, after the size requirement of the node hole is met, a metal bushing cooled by liquid nitrogen is embedded into the axle box node installation hole in a cold loading mode, and the node is pressed in when the metal bushing is at the same temperature as the room temperature.
In the technical scheme, the processing tool for the axle box node hole of the motor train unit provided by the invention has the following beneficial effects:
the joint hole machining tool supports the axle box 10 through the middle supporting structure and the axle box front end supporting structure 4, and meanwhile, the joint screw assembly 5, the axle box top hole tool assembly 6 and the axle box right side jackscrew assembly 7 are used for positioning and machining the joint hole machining operation corresponding to the axle box 10, so that the transverse displacement and the vertical displacement of the axle box 10 can be effectively avoided, the vibration during machining is reduced, and the workpiece machining precision is ensured.
The tool is simple to operate, convenient to master by a user, simple in structure, low in manufacturing cost and convenient to maintain, the axle box node hole can be machined, the metal bushing is embedded in the original node hole after machining, the node is pressed in, and the scrappage of the axle box 10 is reduced to 5% from the original 45% by optimizing the process method.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. The utility model provides a EMUs axle box node spot facing work frock which characterized in that, this processing frock includes:
a base (1);
a central support structure integrated in said base (1); and
an axle box front end support structure (4) integrated with the base (1) and close to the front part of the axle box (10);
a node lead screw assembly (5) is integrated at the position, close to the axle box front end supporting structure (4), of the base (1), and an axle box top hole tooling assembly (6) is integrated at the position, close to the middle supporting structure, of the base (1);
one side of the base (1) close to the rear end of the axle box (10) is provided with an axle box right-side jackscrew component (7).
2. The motor train unit axle box node hole machining tool according to claim 1, wherein the base (1) is made of an S355 plate, and the thickness of the base (1) is not less than 30 mm;
the middle support structure includes:
a first support structure (2) and a second support structure (3) assembled and fixed to the base (1);
the first supporting structure (2) comprises a quadrilateral frame supporting structure which is formed by fixedly connecting two first plates (201) and two second plates (202);
the second supporting structure (3) comprises a first vertical plate (301) which is arranged close to the first supporting structure (2) and extends along the vertical direction, and three first supporting plates (302) are arranged on one side, far away from the first supporting structure (2), of the first vertical plate (301) at intervals;
the lower end of the first supporting plate (302) is fixedly connected with the base (1);
the first support plate (302) is configured as a triangular support plate structure.
3. The motor train unit axle box node hole machining tool according to claim 1, wherein the axle box front end supporting structure (4) comprises:
a front end support base (401); and
a front support base (402) integrated with the front support base (401);
a V-shaped groove (403) is formed on one side of the front end supporting seat (402) facing the front end of the axle box (10), and the front end of the axle box (10) is supported in the V-shaped groove (403);
the axle box front end support structure (4) further comprises:
one end of the pressing structure is connected with the front end supporting base (401), and the other end of the pressing structure extends to the upper part of the axle box (10) and presses the upper end of the front end of the axle box (10).
4. The motor train unit axle box node hole machining tool according to claim 3, wherein the pressing structure comprises a pressing rod (404) in an L-shaped structure, and a pressing screw (405) which is integrated at the upper end of the pressing rod (404) and presses and holds the upper end of the front end of the axle box (10).
5. The motor train unit axle box node hole machining tool according to claim 3, wherein the node lead screw assembly (5) comprises:
the node lead screw bottom plate (501), the node lead screw bottom plate (501) is fixedly connected with the base (1);
a node lead screw plate (502) integrated on one side of the node lead screw bottom plate (501) close to the axle box front end supporting structure (4); and
second support plates (503) symmetrically arranged on both sides of the node screw plate (502);
the lower end of the second supporting plate (503) is fixedly connected with the node lead screw bottom plate (501);
the upper end of the node screw plate (502) is provided with a semi-circular arc groove (504), and the node screw plate (502) is provided with three node screw holes (505) which are arranged at intervals along the circumferential direction of the semi-circular arc groove (504);
a lead screw is installed in the node lead screw hole (505), and the end part of the lead screw is abutted against the side surface of the front end of the axle box (10).
6. The motor train unit axle box node hole machining tool according to claim 1, wherein the number of the axle box top hole tool assemblies (6) is two, and the two sets of the axle box top hole tool assemblies (6) are symmetrically assembled on the side face of the middle supporting structure;
axle box apical pore frock subassembly (6) include:
a third plate (601) fixedly connected with the base (1);
a top orifice plate (602) with one end fixedly connected with the third plate (601) and the other end vertically extending upwards, wherein the top orifice plate (602) is arranged close to the axle box (10); and
a third support plate (603) fixedly connected with both the top orifice plate (602) and the third plate (601);
axle box apical pore frock subassembly (6) still include:
a first structural plate (604) integrated into a side of the top orifice plate (602); and
a second structural panel (605) secured between the two first structural panels (604);
the upper part of the top hole plate (602) is provided with a top hole (606).
7. The motor train unit axle box node hole machining tool according to claim 1, wherein the axle box right-side jackscrew assembly (7) comprises:
a right jackscrew support plate (701) fixedly connected with the base (1);
the right top thread plate (702) is fixedly connected with the right top thread support plate (701) and extends along the vertical direction; and
a fourth supporting plate (703) fixedly connected with the right top thread supporting plate (701) and the right top thread plate (702);
the upper part of the right side top thread plate (702) is provided with a right side top thread hole (704).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684857.XA CN113369921B (en) | 2021-06-21 | 2021-06-21 | EMUs axle box node hole processing frock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684857.XA CN113369921B (en) | 2021-06-21 | 2021-06-21 | EMUs axle box node hole processing frock |
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| CN113369921A true CN113369921A (en) | 2021-09-10 |
| CN113369921B CN113369921B (en) | 2022-09-20 |
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| CN212145343U (en) * | 2020-04-16 | 2020-12-15 | 锦州捷通铁路机械股份有限公司 | Vertical processing positioning tool for axle box of light rail locomotive |
| CN212071206U (en) * | 2020-04-30 | 2020-12-04 | 锦州捷通铁路机械股份有限公司 | Railway passenger car axle box rotating arm machining positioning fixture |
| CN212600399U (en) * | 2020-06-30 | 2021-02-26 | 锦州捷通铁路机械股份有限公司 | Railway passenger car axle box rotating arm machining positioning fixture |
| CN212600400U (en) * | 2020-06-30 | 2021-02-26 | 锦州捷通铁路机械股份有限公司 | Railway passenger car axle box rotating arm machining and positioning tool |
| CN213318748U (en) * | 2020-10-10 | 2021-06-01 | 智沪铁路设备有限公司 | Automatic press-fitting device for assembling motor train unit axle box and node |
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|---|---|
| CN113369921B (en) | 2022-09-20 |
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