Tool fixture device and machine tool for railway manganese alloy point rail machining

Abstract

The utility model belongs to the technical field of railway manganese alloy point rail machining, and particularly relates to a tool fixture device and a machine tool for machining a railway manganese alloy point rail. The tool fixture device is mounted on a machine tool, the machine tool comprises a machine tool body and an electromagnetic fixing part mounted on the machine tool body, and the tool fixture device comprises a height positioning fixture mounted on the electromagnetic fixing part and used for clamping the bottom of a workpiece; the side top positioning fixture is installed on the electromagnetic fixing piece and arranged above the height positioning fixture, and the side top positioning fixture abuts against one side face of the workpiece; and the horizontal positioning fixture is installed on the machine tool body, the horizontal positioning fixture and the side top positioning fixture are arranged on the two sides of the workpiece respectively, and the horizontal positioning fixture abuts against the other side face of the workpiece. According to the tool clamp device, under the limitation that an existing machining mode is not changed and a tool clamp cannot be replaced integrally, the manganese alloy point rail and a common rail piece can be machined on the same machine tool, and the universality and the utilization rate of machine tool equipment are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway manganese alloy center rail processing, in particular to a tool fixture device and a machine tool for railway manganese alloy center rail processing. Background Art

[0002] Generally speaking, the manufacture of railway turnout rails is typically based on electromagnetic tire models used in existing machine tools. The continuous advancement of railway equipment technology has led to higher performance requirements for railway turnout products. This has led to the development of a new manganese alloy heart rail, which improves the overall quality of turnout products by modifying material properties. However, the newly developed manganese alloy heart rail material is not susceptible to magnetic forces, which presents new challenges in the manufacture of turnout rails based on electromagnetic tires.

[0003] Since the processing involves rail parts of different materials, the same machine tool needs to meet the processing requirements of both non-magnetic manganese alloy rail parts and magnetic rail parts. However, the existing machine tools cannot meet the above processing requirements. The tooling fixtures need to be frequently replaced according to the material of the rail parts. At the same time, the existing machine tools cannot replace the tooling fixtures as a whole, which results in a waste of time, manpower and resources.

[0004] Based on this, the present invention provides a novel tooling fixture device and machine tool for machining railway manganese alloy center rails to overcome the above-mentioned defects. Utility Model Content

[0005] One purpose of the utility model is to provide a tooling fixture device for machining a railway manganese alloy center rail, which realizes the same-bed machining of the manganese alloy center rail and ordinary rail parts without changing the existing machining mode and without the limitation of being unable to replace the tooling fixture as a whole, thereby improving the versatility and utilization rate of the machine tool equipment.

[0006] The utility model adopts the following technical solution: a tool fixture device for machining a railway manganese alloy center rail, the tool fixture device is installed on a machine tool, the machine tool includes a machine tool body and an electromagnetic fixing member installed on the machine tool body, the tool fixture device includes:

[0007] A height positioning fixture is installed on the electromagnetic fixing member and is used to clamp the bottom of the workpiece;

[0008] A side top positioning fixture is installed on the electromagnetic fixing member and is arranged above the height positioning fixture, and the side top positioning fixture stops at one side of the workpiece;

[0009] A horizontal positioning fixture is installed on the machine tool body. The horizontal positioning fixture and the side top positioning fixture are respectively arranged on both sides of the workpiece, and the horizontal positioning fixture stops at the other side of the workpiece.

[0010] Furthermore, the height positioning fixture is a height positioning block, which includes a first horizontal part, a vertical part and a second horizontal part connected in sequence. The first horizontal part, the vertical part and the second horizontal part together form a U-shaped clamping groove, and the opening of the U-shaped clamping groove faces the workpiece and is used to clamp the bottom of the workpiece.

[0011] Furthermore, the height positioning block is mounted on the electromagnetic fixing member by magnetic adsorption.

[0012] Furthermore, the side top positioning fixture is a side top positioning block, which is in the shape of an elongated strip and is mounted on the electromagnetic fixing member; one side of the side top positioning block abuts against a side surface of the workpiece.

[0013] Furthermore, the side top positioning block is arranged along the length direction of the workpiece.

[0014] Furthermore, the side top positioning block is fixedly mounted on the electromagnetic fixing member by a locking bolt.

[0015] Furthermore, the horizontal positioning fixture includes:

[0016] A positioning support, the positioning support being fixedly mounted on the machine tool body;

[0017] A horizontal adjustment screw is installed on the top of the positioning support and is threadedly connected to the positioning support, and the end of the horizontal adjustment screw is stopped at the other side of the workpiece.

[0018] Furthermore, the horizontal positioning fixture further includes:

[0019] A floating screw, comprising a screw portion and a connecting portion mounted on the top of the screw portion and connected thereto; wherein the screw portion is vertically mounted on the positioning support and threadedly connected thereto for adjusting the position of the connecting portion relative to the positioning support; the connecting portion is an annular structure with an internal thread provided on the inner wall, and the horizontal adjustment screw is inserted into and mounted on the connecting portion of the floating screw and threadedly connected thereto for adjusting the position of the horizontal adjustment screw relative to the other side of the workpiece.

[0020] Furthermore, the tool fixture device further includes:

[0021] An auxiliary clamping mechanism, comprising a pad, a pressure plate and a locking fixture;

[0022] In which, the pad is fixedly installed on the machine tool body; the first end of the pressure plate is installed on the pad, the second end of the pressure plate is stopped on the workpiece, and a long hole is opened at the second end, and the long hole extends from the second end of the pressure plate to the first end; the locking fixing piece is installed at the long hole of the pressure plate to fix the pressure plate to the machine tool body.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] When installing the tooling fixture device of the present invention, the height positioning fixture is first installed on the electromagnetic fixture to clamp the bottom of the workpiece, thereby achieving the workpiece's positioning and installation in the height direction. Next, the side top positioning fixture is also installed on the electromagnetic fixture and is set above the height positioning fixture so that it stops at one side of the workpiece, thereby positioning the workpiece in the horizontal direction. Finally, the horizontal positioning fixture is installed on the machine tool body, and the horizontal positioning fixture and the side top positioning fixture are respectively located on both sides of the workpiece, and the horizontal positioning fixture stops at the other side of the workpiece, thereby achieving the workpiece's positioning and installation in the horizontal direction.

[0025] In practical application, this device can simultaneously process both non-magnetic manganese alloy rails and magnetic rails in the same machine tool process. This feature avoids the waste of time, manpower, and resources caused by frequent tooling changes. This eliminates the need for frequent tooling changes, saving material costs and improving machine tool efficiency and production continuity.

[0026] At the same time, through the coordinated action of height positioning fixtures, side top positioning fixtures, and horizontal positioning fixtures, workpieces are precisely positioned and installed from multiple directions, ensuring the accuracy and quality of workpiece processing and meeting the higher performance requirements of turnout products driven by the development of railway equipment technology. Furthermore, the multi-directional positioning and clamping method effectively enhances the stability of the workpiece during processing, reduces the displacement or shaking that may occur due to the material not being affected by magnetic forces, and reduces processing errors and scrap rates.

[0027] Furthermore, the device has a simple structure and is easy to manufacture, install, and maintain, reducing production costs and time. Its ease of operation allows operators to quickly master the system, reducing training costs and the potential for operational errors. Furthermore, operators do not need to expend excessive physical effort carrying and replacing heavy fixtures, reducing labor intensity and potential safety hazards associated with operating lifting equipment.

[0028] Another object of the present invention is to provide a machine tool, which includes a machine tool body, an electromagnetic fixing part installed on the machine tool body, and a tool fixture device, wherein the tool fixture device is the tool fixture device for processing the above-mentioned railway manganese alloy center rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is an application view of a tooling fixture device for machining a railway manganese alloy center rail according to an embodiment of the utility model;

[0031] Figure 2 for Figure 1 A partial enlarged view of

[0032] Figure 3 for Figure 2 Schematic diagram of the structure after removing the workpiece;

[0033] Among them: machine tool body 1; electromagnetic fixing part 2, horizontal edge 20, vertical edge 21; height positioning fixture 3, first horizontal part 30, vertical part 31, second horizontal part 32, U-shaped clamping groove 33; side top positioning fixture 4; horizontal positioning fixture 5, positioning support 50, horizontal adjustment screw 51, floating screw 52, screw part 521, connecting part 522; workpiece 6; locking bolt 7; auxiliary clamping mechanism 8, pad 80, pressure plate 81, locking fixing part 82, long strip hole 83; T-bolt 9. DETAILED DESCRIPTION

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The following is combined with Figure 1 To the attached Figure 3 And specific embodiments, the utility model is discussed in detail:

[0036] like Figure 1-3As shown, the present invention provides a fixture device for machining railway manganese alloy center rails. The fixture device is mounted on a machine tool, which includes a machine tool body 1 and an electromagnetic fixture 2 mounted on the machine tool body 1. The fixture device includes a height positioning fixture 3, a side top positioning fixture 4, and a horizontal positioning fixture 5. It should be noted that in this embodiment, the workpiece 6 can be a railway manganese alloy center rail or a conventional rail, and this is not specifically limited in the present invention.

[0037] The height positioning fixture 3 is installed on the electromagnetic fixing member 2 and is used to clamp the bottom of the workpiece 6 to achieve the positioning and installation of the workpiece 6 in the height direction;

[0038] The side top positioning fixture 4 is installed on the electromagnetic fixing member 2 and is arranged above the height positioning fixture 3. The side top positioning fixture 4 stops at one side of the workpiece 6. In this embodiment, it stops at one side of the waist of the workpiece 6.

[0039] The horizontal positioning fixture 5 is installed on the machine tool body 1. The horizontal positioning fixture 5 and the side top positioning fixture 4 are respectively arranged on both sides of the workpiece 6, and the horizontal positioning fixture 5 stops at the other side of the workpiece 6. In this embodiment, it stops at the other side of the waist of the workpiece 6 to realize the positioning and installation of the workpiece 6 in the horizontal direction.

[0040] When installing the tooling fixture device of the present invention, first install the height positioning fixture 3 on the electromagnetic fixture 2 to clamp the bottom of the workpiece 6 (i.e., the bottom of the rail), thereby achieving the positioning and installation of the workpiece 6 in the height direction. Next, install the side top positioning fixture 4 on the electromagnetic fixture 2 and set it above the height positioning fixture 3 so that it stops at one side of the workpiece 6 (i.e., one side of the rail waist), thereby positioning the workpiece 6 in the horizontal direction. Finally, install the horizontal positioning fixture 5 on the machine tool body 1, and let the horizontal positioning fixture 5 and the side top positioning fixture 4 be located on both sides of the workpiece 6 respectively, and the horizontal positioning fixture 5 stop at the other side of the workpiece 6 (i.e., the other side of the rail waist), thereby achieving the positioning and installation of the workpiece 6 in the horizontal direction.

[0041] In practical application, this device can simultaneously process both non-magnetic manganese alloy rails and magnetic rails in the same machine tool process. This feature avoids the waste of time, manpower, and resources caused by frequent tooling changes. This eliminates the need for frequent tooling changes, saving material costs and improving machine tool efficiency and production continuity.

[0042] At the same time, the coordinated action of the height positioning fixture 3, the side top positioning fixture 4, and the horizontal positioning fixture 5 allows for precise positioning and installation of the workpiece from multiple directions, ensuring the machining accuracy and quality of workpiece 6 and meeting the higher performance requirements of turnout products driven by the development of railway equipment technology. Furthermore, this multi-directional positioning and clamping method effectively enhances the stability of workpiece 6 during machining, minimizing the potential for displacement or shaking caused by the material not being affected by magnetic forces, thereby reducing machining errors and scrap rates.

[0043] Furthermore, the device has a simple structure and is easy to manufacture, install, and maintain, reducing production costs and time. Its ease of operation allows operators to quickly master the system, reducing training costs and the potential for operational errors. Furthermore, operators do not need to expend excessive physical effort carrying and replacing heavy fixtures, reducing labor intensity and potential safety hazards associated with operating lifting equipment.

[0044] Furthermore, the height positioning fixture 3 is a height positioning block, which is fixedly mounted on the electromagnetic fixture 2 via a pressing block. It should be noted that the specific structure of the pressing block is not limited in the present invention and can be designed by a person skilled in the art based on actual conditions and with reference to existing technologies, as long as the above functions can be achieved. Preferably, the height positioning block can be magnetically adsorbed and mounted on the electromagnetic fixture 2. The magnetic adsorption method enables the height positioning block to be quickly mounted on or removed from the electromagnetic fixture 2, facilitating the replacement of the height positioning fixture 3, saving operation time, and improving work efficiency. At the same time, during the processing, magnetic adsorption can effectively reduce the displacement of the height positioning block caused by factors such as vibration, thereby improving the stability and consistency of the processing.

[0045] The height positioning block includes a first horizontal portion 30, a vertical portion 31 and a second horizontal portion 32 connected in sequence, and a U-shaped clamping groove 33 is formed by the first horizontal portion 30, the vertical portion 31 and the second horizontal portion 32. The opening of the U-shaped clamping groove 33 faces the direction of the workpiece 6 and is used to clamp the bottom of the workpiece 6, that is, the bottom of the rail.

[0046] In this embodiment, the electromagnetic fixture 2 has an L-shaped cross-section, comprising a horizontal side 20 and a vertical side 21. The lower wall of a first horizontal portion 30 abuts against the horizontal side 20 of the electromagnetic fixture 2. A vertical portion 31 is perpendicular to the first horizontal portion 30 and is located at the end of the first horizontal portion 30 near the vertical side of the electromagnetic fixture 2. The outer wall of the vertical portion 31 abuts against the vertical side of the electromagnetic fixture 2. A second horizontal portion 32 is mounted at the end of the vertical portion 31 away from the first horizontal portion 30. The second horizontal portion 32 extends away from the vertical side 21 of the electromagnetic fixture 2. The first horizontal portion 30, the vertical portion 31, and the second horizontal portion 32 together form a U-shaped clamping groove 33. The specific shape of the U-shaped clamping groove 33 matches the shape of the bottom of the workpiece 6, facilitating precise clamping of the bottom of the workpiece 6 and ensuring the height positioning accuracy of the workpiece 6. During use, different height positioning blocks can be replaced according to the size of the actual workpiece 6 being clamped. Furthermore, in this embodiment, the length of the first horizontal portion 30 is greater than that of the second horizontal portion 32 , which facilitates the insertion and extraction operations of the workpiece 6 .

[0047] Furthermore, the side top positioning fixture 4 is a side top positioning block. This block is elongated and mounted on the electromagnetic fixture 2. In this embodiment, the side top positioning block is mounted on top of the vertical edge 21 of the electromagnetic fixture 2. One side of the side top positioning block 3 abuts against a side surface of the workpiece 6. This precise positioning ensures that machining operations on the workpiece 6 are performed within the desired position and dimensional range, thereby improving product quality and consistency. In this embodiment, the side top positioning block is secured to the electromagnetic fixture 2 via locking bolts 7. Multiple locking bolts 7 are provided and evenly spaced along the length of the side top positioning block. These equally spaced locking bolts 7 evenly distribute the tightening force, ensuring the side top positioning block is securely fixed to the electromagnetic fixture, preventing loosening or displacement during operation and facilitating installation and removal. Furthermore, it should be noted that the side top positioning block is secured using embedded locking bolts 7, with the bolt heads not protruding from the surface of the side top positioning block. This reduces external interference, minimizes collision risk, and enhances overall aesthetics and safety.

[0048] Specifically, the side top positioning block is arranged along the length direction of the workpiece 6 so that the length direction of the side top positioning block is parallel to the length direction of the workpiece 6. The side top positioning block arranged along the length direction of the workpiece 6 can provide more stable and uniform positioning support, reducing shaking and deviation during processing or operation.

[0049] Furthermore, the horizontal positioning fixture 5 includes:

[0050] A positioning support 50 , wherein the positioning support 50 is fixedly mounted on the machine tool body 1 . In this embodiment, the positioning support 50 is fixedly mounted on the machine tool body 1 by T-bolts 9 ;

[0051] A horizontal adjustment screw 51 is mounted on top of the positioning support 50 and is threadedly connected to the positioning support 50. The end of the horizontal adjustment screw 51 abuts against the other side of the workpiece 6. By cooperating with the side top positioning fixture 4, it abuts against both sides of the workpiece 6, achieving horizontal positioning and installation of the workpiece 6, ensuring the horizontal positioning accuracy of the workpiece 6 and reducing machining errors. By rotating the horizontal adjustment screw 51, the degree of contact and position of its end against the workpiece 6 can be easily adjusted to accommodate workpieces 6 of different sizes and shapes, thereby improving the versatility of the device.

[0052] Specifically, the horizontal positioning fixture 5 may further include:

[0053] The floating screw 52 includes a screw portion 521 and a connecting portion 522 installed on the top of the screw portion 521 and connected thereto; wherein the screw portion 521 is vertically installed on the positioning support 50 and is threadedly connected thereto for adjusting the position of the connecting portion 522 relative to the positioning support 50; the connecting portion 522 is an annular structure with an internal thread on the inner wall, and the horizontal adjustment screw 51 is inserted into the connecting portion 522 installed on the floating screw 52 and is threadedly connected thereto for adjusting the position of the horizontal adjustment screw 51 relative to the other side of the workpiece 6.

[0054] The provision of the floating screw 52 enables the horizontal adjustment screw 51 to be adjusted not only horizontally but also vertically, thereby more flexibly adapting to workpieces 6 of varying shapes and sizes and improving the versatility of the fixture. Furthermore, the dual adjustment of the floating screw 52 and the horizontal adjustment screw 51 improves positioning accuracy. Furthermore, the floating screw 52 utilizes a screw portion 521 and a connecting portion 522, resulting in a simple structure and low cost.

[0055] Furthermore, the tool fixture device further includes:

[0056] The auxiliary clamping mechanism 8 includes a cushion block 80 , a pressing plate 81 and a locking fixture 82 .

[0057] The pad 80 is fixedly mounted on the machine tool body 1; the first end of the pressure plate 82 is mounted on the pad 80, and the second end of the pressure plate 82 abuts against the bottom of the workpiece 6, that is, the upper surface of the rail bottom side. A long hole 83 is formed at the second end, and the long hole 83 extends from the second end of the pressure plate 82 toward the first end; the locking fixture 82 is mounted at the long hole of the pressure plate 82 to securely connect the pressure plate 82 to the machine tool body 1. Specifically, the second end of the pressure plate 82 is provided with an inclined surface that matches the inclination of the upper surface of the rail bottom side to achieve a clamping effect.

[0058] The addition of auxiliary clamping mechanism 8 further improves control over the height of workpiece 6, ensuring that even in extreme situations, such as when electromagnetic fixture 2 loses its magnetism, the workpiece still meets machining requirements, effectively preventing the scrapping of workpieces due to incidental factors. This also provides an additional safeguard, reducing the adverse effects of unexpected events such as electromagnetic fixture 2 losing its magnetism on machining, improving the reliability and safety of the machining process, preventing workpiece scrapping due to unexpected circumstances, and saving costs and resources.

[0059] Based on the aforementioned manganese alloy rail processing fixture device, the present invention provides a machine tool comprising a machine tool body, an electromagnetic fixture mounted on the machine tool body, and a fixture device. The fixture device is the aforementioned manganese alloy rail processing fixture device. This machine tool incorporates all technical solutions of the aforementioned manganese alloy rail processing fixture device and possesses at least all the advantages of the aforementioned manganese alloy rail processing fixture device, which will not be further described here.

[0060] The above further describes the present invention with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A fixture device for machining railway manganese alloy center rails, characterized by: The tool fixture device is installed on a machine tool, and the machine tool includes a machine tool body and an electromagnetic fixing member installed on the machine tool body. The tool fixture device includes: A height positioning fixture is installed on the electromagnetic fixing member and is used to clamp the bottom of the workpiece; A side top positioning fixture is installed on the electromagnetic fixing member and is arranged above the height positioning fixture, and the side top positioning fixture stops at one side of the workpiece; A horizontal positioning fixture is installed on the machine tool body. The horizontal positioning fixture and the side top positioning fixture are respectively arranged on both sides of the workpiece, and the horizontal positioning fixture stops at the other side of the workpiece.

2. The tooling fixture device for machining railway manganese alloy center rail according to claim 1, characterized in that: The height positioning fixture is a height positioning block, which includes a first horizontal part, a vertical part and a second horizontal part connected in sequence. The first horizontal part, the vertical part and the second horizontal part together form a U-shaped clamping groove. The opening of the U-shaped clamping groove faces the workpiece and is used to clamp the bottom of the workpiece.

3. The tooling fixture device for machining railway manganese alloy center rail according to claim 2, characterized in that: The height positioning block is mounted on the electromagnetic fixing member by magnetic adsorption.

4. The tooling fixture device for machining railway manganese alloy center rail according to claim 1, characterized in that: The side top positioning fixture is a side top positioning block, which is in the shape of an elongated strip and is mounted on the electromagnetic fixing member; one side of the side top positioning block abuts against a side surface of the workpiece.

5. The tooling fixture device for machining railway manganese alloy center rail according to claim 4, characterized in that: The side top positioning block is arranged along the length direction of the workpiece.

6. The tooling fixture device for machining railway manganese alloy center rail according to claim 5, characterized in that: The side top positioning block is fixedly mounted on the electromagnetic fixing member via a locking bolt.

7. The tooling fixture device for machining railway manganese alloy center rail according to claim 1, characterized in that: The horizontal positioning fixture comprises: A positioning support, the positioning support being fixedly mounted on the machine tool body; A horizontal adjustment screw is installed on the top of the positioning support and is threadedly connected to the positioning support, and the end of the horizontal adjustment screw is stopped at the other side of the workpiece.

8. The tooling fixture device for machining railway manganese alloy center rail according to claim 7, characterized in that: The horizontal positioning fixture also includes: A floating screw, comprising a screw portion and a connecting portion mounted on the top of the screw portion and connected thereto; wherein the screw portion is vertically mounted on the positioning support and threadedly connected thereto for adjusting the position of the connecting portion relative to the positioning support; the connecting portion is an annular structure with an internal thread provided on the inner wall, and the horizontal adjustment screw is inserted into and mounted on the connecting portion of the floating screw and threadedly connected thereto for adjusting the position of the horizontal adjustment screw relative to the other side of the workpiece.

9. The tooling fixture device for machining railway manganese alloy center rail according to claim 1, characterized in that: The tool fixture device also includes: An auxiliary clamping mechanism, comprising a pad, a pressure plate and a locking fixture; In which, the pad is fixedly installed on the machine tool body; the first end of the pressure plate is installed on the pad, the second end of the pressure plate is stopped on the workpiece, and a long hole is opened at the second end, and the long hole extends from the second end of the pressure plate to the first end; the locking fixing piece is installed at the long hole of the pressure plate to fix the pressure plate to the machine tool body.

10. A machine tool, characterized in that: It comprises a machine tool body, an electromagnetic fixing part installed on the machine tool body, and a tool fixture device, wherein the tool fixture device is the tool fixture device for processing railway manganese alloy center rails according to any one of claims 1 to 9.

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