Clamping tool

Abstract

The utility model discloses a clamping tool which comprises an electromagnetic base composed of a base and two positioning seats symmetrically located at the left side end and the right side end of the base, the inner side faces of the positioning seats form a transverse positioning face, and a vertical positioning face is formed at the position, on the upper surface of the base, between the inner side faces of the two positioning seats. The vertical positioning face and the two transverse positioning faces define a long-strip-shaped concave clamping cavity suitable for containing a sandwich rail and a wing rail embedded block, a positioning adjusting assembly is arranged in the long-strip-shaped concave clamping cavity, and the vertical positioning face and the left and right opposite transverse positioning faces can be separately controlled in a magnetizing and demagnetizing mode so that magnetic force of the two transverse positioning faces can not interfere with each other. The transverse positioning face and the vertical positioning face which are attached to the workpiece after being powered on form a magnetic attraction face for magnetically attracting and fixing the workpiece, the side faces of the two positioning seats are provided with auxiliary abutting structures used for assisting in abutting against the workpiece, and the electromagnetic base is provided with a fixing structure used for fixing the electromagnetic base to a machine tool workbench. The fixture can be suitable for stably clamping different types of point rail and wing rail inlaid block workpieces.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a clamping fixture which can be used for clamping workpieces of different types of center rails and wing rail inlay blocks. Background Art

[0002] The alloy steel heart rail working edge and wing rail inlay blocks are currently processed by 3D modeling. The length, height, hole spacing, etc. of different types of alloy steel heart rails and wing rail inlay blocks are different. Different fixed tires need to be replaced during processing. At present, some methods to solve this problem are: after the heart rail and wing rail inlay blocks are drilled, they are connected and clamped with the heart rail or wing rail inlay blocks through the bolt holes on the fixed tire for processing. However, for different types of workpieces, different tires need to be replaced, the tire versatility is low, and the processing auxiliary time is relatively long.

[0003] In order to solve the problem of low versatility of traditional tooling, the utility model patent with authorization announcement number CN218518212U, "A clamping tool for processing wing rail mosaic blocks", discloses a tool that uses strong magnetic force to suck and fix wing rail mosaic blocks, which can be suitable for clamping various types of wing rail mosaic blocks. However, the patent is limited by its structural design, and no corresponding positioning adjustment components are provided on its lateral positioning surface. Therefore, it is only suitable for clamping wing rail mosaic blocks, but not for clamping heart rails. When used to clamp the heart rail, the end inclined surface of the heart rail cannot achieve a close fit with the lateral positioning surface, and is prone to shaking and deformation during processing. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a clamping tool which can be used for clamping workpieces of different types of center rails and wing rail inlay blocks.

[0005] The technical solution adopted by the utility model to achieve the above technical effects is:

[0006] The cam face has two camming positions, the inner side of the cam face forms a lateral positioning surface, and the inner side of the cam face forms a vertical positioning surface at the upper surface of the cam face, and the vertical positioning surface and the two camming positions form a longitudinally oriented cam face, which is suitable for clamping the cam face and the camming block respectively.

[0007] Preferably, in the above-mentioned clamping tool, the positioning adjustment assembly includes a first magnetic positioning adjustment block suitable for cooperating with the clamping center rail.

[0008] Preferably, in the above-mentioned clamping tool, the positioning and adjustment assembly includes a second magnetic positioning and adjustment block suitable for cooperating with and clamping the wing rail mosaic block.

[0009] Preferably, in the above-mentioned clamping tool, the positioning adjustment assembly also includes a third magnetic positioning adjustment block provided in the elongated concave clamping cavity for raising the center rail or wing rail inlay block when the tool interferes with the positioning seat.

[0010] Preferably, in the above-mentioned clamping tool, the side of the first magnetic positioning adjustment block that fits the lateral positioning surface is a plane, and the other side surface is an inclined surface with the same slope as the first and second side surfaces of the center rail.

[0011] Preferably, in the above-mentioned clamping tool, the auxiliary tightening structure includes a plurality of bolt holes opened on the side surface of the positioning seat along the length direction and penetrating the positioning seat, and tightening bolts arranged in the bolt holes.

[0012] Preferably, in the above-mentioned clamping fixture, the fixing structure includes a plurality of first positioning keys arranged along the center line on the bottom surface of the base for inserting into the T-slot of the machine tool worktable to achieve positioning, as well as a mounting hole arranged along the center line on the top surface of the positioning seat and passing through the positioning seat and the base, and a T-bolt arranged in the mounting hole for inserting into the T-slot of the machine tool worktable.

[0013] Preferably, in the above-mentioned clamping fixture, the first magnetic conductive positioning adjustment block is provided with a second positioning key on a plane in contact with the lateral positioning surface, and the lateral positioning surface is provided with a keyway for plugging and cooperating with the second positioning key.

[0014] Preferably, in the above-mentioned clamping fixture, the bottom surface of the second magnetic conductive positioning adjustment block is a plane, and the top surface is an inclined surface.

[0015] The beneficial effects of the utility model are as follows: the clamping tool of the utility model can be adapted to clamp different types of heart rails and wing rail mosaic blocks through the long concave clamping cavity on the electromagnetic base, and the magnetic attraction and fixing effect generated on the horizontal positioning surface and the vertical positioning surface and the auxiliary tightening structure on one side of the positioning seat can realize rapid clamping and fixing of the workpiece, and the positioning and adjustment components can be used to position and adjust the heart rails and wing rail mosaic blocks of different types, making it suitable for tooling, and having the advantages of strong versatility and simple and quick clamping and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the electromagnetic base of the utility model;

[0017] Figure 2 This is a diagram showing the use state of the clamping center rail of the utility model;

[0018] Figure 3 This is a diagram of the use state of the wing rail inlay block of the utility model;

[0019] Figure 4 This is a three-dimensional diagram of the first magnetic conductive positioning adjustment block of the utility model;

[0020] Figure 5 This is a three-dimensional diagram of the second magnetic conductive positioning adjustment block of the utility model;

[0021] Figure 6 It is a three-dimensional diagram of the third magnetic conductive positioning adjustment block of the utility model;

[0022] Figure 7 It is a side view of the utility model when the wing rail inlay block is being raised. DETAILED DESCRIPTION

[0023] In order to further understand the present invention, the present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0024] In the description of this utility, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this utility. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of this utility, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility can be understood according to specific circumstances.

[0026] The embodiment of the utility model provides a clamping tool, which is suitable for clamping different types of center rails and wing rail inlay block workpieces. Figure 1 As shown in the figure, the clamping tool of the utility model includes an electromagnetic base composed of a base 1 and two positioning seats 2 symmetrically located at the left and right sides of the base 1, wherein the inner side surface of the positioning seat 2 constitutes a lateral positioning surface 3, and the inner side surfaces of the two positioning seats 2 constitute a vertical positioning surface 4 at the upper surface position of the base 1. The vertical positioning surface 4 and the two lateral positioning surfaces 3 enclose a long strip concave clamping cavity suitable for clamping the core rail 10 and the wing rail mosaic block 11 respectively. A positioning adjustment component is provided in the long strip concave clamping cavity, wherein the vertical positioning surface 4 and the two opposite lateral positioning surfaces 3 on the left and right can be separately controlled for electrification and demagnetization, so that the magnetic forces of the two lateral positioning surfaces 3 do not interfere with each other. After electrification, the lateral positioning surface 3 and the vertical positioning surface 4 that are in contact with the workpiece constitute the magnetic suction surface for magnetically fixing the workpiece. In order to assist the magnetic suction surface in clamping and fixing the workpiece plane, the sides of the two positioning seats 2 are also provided with an auxiliary tightening structure for assisting in tightening the workpiece. In order to facilitate the fixing of the electromagnetic base on the machine tool workbench, a fixing structure is also provided on the electromagnetic base, through which the electromagnetic base can be simply and quickly fixed on the machine tool workbench. When in use, the electromagnetic base is first fixed on the machine tool workbench, and then the corresponding positioning adjustment component is selected according to the type of workpiece (center rail or wing rail inlay block), and the workpiece is positioned in the long concave clamping cavity through the corresponding positioning adjustment component, and then the workpiece is tightened through the auxiliary tightening structure, and finally, it is magnetized so that the horizontal positioning surface 3 and the vertical positioning surface 4 generate strong magnetic force to attract the workpiece (center rail or wing rail inlay block), and then the workpiece is three-dimensionally modeled and processed using an alloy steel milling cutter.

[0027] In some embodiments, Figure 1 and Figure 2 As shown, the auxiliary tightening structure includes a plurality of bolt holes 6 opened along the length direction on the side of the positioning seat 2 and penetrating the positioning seat 2, and tightening bolts 15 arranged in the bolt holes 6. Figure 1 and Figure 7 As shown, the fixing structure includes a plurality of first positioning keys 8 arranged on the bottom surface of the base 1 along the center line for inserting into the T-slot of the machine tool worktable to achieve positioning, and a mounting hole 5 arranged on the top surface of the positioning seat 2 along the center line and penetrating the positioning seat 2 and the base 1, and a T-bolt arranged in the mounting hole 5 for inserting into the T-slot of the machine tool worktable.

[0028] like Figure 2 As shown in FIG. 1 , it is a diagram of the clamping tool of the present invention in the state of clamping the center rail 10. When used for clamping the center rail, the positioning adjustment assembly includes a first magnetic positioning adjustment block 9 suitable for cooperating with the clamping center rail 10. Figure 2 As shown, the first magnetic positioning adjustment block 9 has a flat surface on one side that is in contact with the lateral positioning surface 3, and the other side is an inclined surface with the same slope as the first and second side surfaces of the center rail 10. Figure 4 As shown, Figure 1 and Figure 4 As shown, the first magnetic conductive positioning adjustment block 9 is provided with a second positioning key 14 on a plane that fits the lateral positioning surface 3 , and the lateral positioning surface 3 is provided with a key slot 7 that is plugged and matched with the second positioning key 14 .

[0029] When machining the center rail working edge profile, Figure 2 As shown, the second positioning key 14 on the first magnetic positioning adjustment block 9 is placed in the keyway 7 on the lateral positioning surface 3 of the positioning seat 2 on one side, and fits with the lateral positioning surface 3 on the side, so as to realize the positioning of the first magnetic positioning adjustment block 9 in the long strip concave clamping cavity. Then the first side surface of the heart rail 10 is used as the main positioning surface, so that it fits with the inclined surface of the first magnetic positioning adjustment block 9 to realize lateral positioning. The bottom surface of the heart rail 10 is fitted with the vertical positioning surface 4, and the end of the heart rail 10 is aligned with the end of the first magnetic positioning adjustment block 9 to realize vertical positioning. Then, the second side surface of the heart rail 10 and the third and fourth side surfaces of the heel end of the heart rail 10 are tightened by the tightening bolts 15 on the two positioning seats 2. Finally, after the lateral positioning surface 3 and the vertical positioning surface 4 generate strong magnetic force to attract the heart rail 10, the alloy steel milling cutter is used to perform three-dimensional modeling processing on the working edge of the heart rail. After the contour of the working edge of the heart rail is processed, it is electrically demagnetized and the processed heart rail is removed.

[0030] like Figure 3As shown, it is a diagram of the clamping fixture of the utility model in the use state of clamping the wing rail mosaic block 11. When processing the wing rail mosaic block 11, the horizontal side of the wing rail mosaic block 11 is fitted with the lateral positioning surface 3 of one side positioning seat 2 to achieve lateral positioning. When processing the bottom surface of the wing rail mosaic block 11, the top surface of the wing rail mosaic block 11 is fitted with the vertical positioning surface 4 to achieve vertical positioning. When processing the top surface of the wing rail mosaic block 11, the bottom surface of the wing rail mosaic block 11 is fitted with the vertical positioning surface 4 to achieve vertical positioning. Then, the side of the wing rail mosaic block 11 is tightened by the tightening bolts 15 on the other side positioning seat 2.

[0031] When the bottom profile of the wing rail mosaic block 11 is processed, the bottom surface of the wing rail mosaic block 11 is flat except for the middle part, and the rest is an inclined surface. The corresponding positioning and adjustment components are used to support the inclined surface of the wing rail mosaic block 11. When used to clamp the wing rail mosaic block 11, the corresponding positioning and adjustment components include a second magnetic positioning and adjustment block 13 suitable for clamping the wing rail mosaic block 11. Figure 5 As shown, the bottom surface of the second magnetic conductive positioning adjustment block 13 is a plane, and the top surface is an inclined surface. Figure 7 As shown, when in use, it is horizontally assembled in the long concave clamping cavity to provide support for the inclined surface portion of the wing rail inlay block 11.

[0032] When processing the working edge of the center rail 11 and the wing rail inlay block 11, the height of the positioning seat 2 is constant. When the height of the center rail 11 or the height of the wing rail inlay block 11 is small, the tool and the positioning seat 2 interfere with each other. At this time, the positioning adjustment component to be applied also includes a third magnetic positioning adjustment block 12 arranged in the long concave clamping cavity for raising the center rail 10 or the wing rail inlay block 11. Figure 6 As shown, the third magnetic positioning adjustment block 12 is a rectangular parallelepiped structure, which is assembled in the long concave clamping cavity of the electromagnetic base. The third magnetic positioning adjustment block 12 is clamped on the vertical positioning surface 4 to adjust the height of the center rail 10 and the wing rail mosaic block 11. The tooling can meet the processing requirements of longer center rails and wing rail mosaic blocks through the combined use of the electromagnetic base and the positioning adjustment assembly.

[0033] In an embodiment of the utility model, the first magnetic positioning adjustment block 9, the second magnetic positioning adjustment block 13 and the third magnetic positioning adjustment block 12 are all made of magnetic materials. The utility model has good versatility. By replacing the positioning adjustment blocks, the processing of alloy steel heart rail and wing rail inlays of different models can be satisfied, reducing the number of tooling. The clamping and positioning are simple and quick. After processing the heart rail, the first magnetic positioning adjustment block 9 can be removed to process the wing rail inlays, or after processing the wing rail inlays, the first magnetic positioning adjustment block 9 can be installed to process the heart rail. There is no need to switch the process or replace the tooling, which reduces the auxiliary processing time and the labor intensity of the operator. The clamping and positioning are stable and reliable. The clamping method of large contact plane suction is adopted, and the problems of deformation and vibration affecting the processing quality during the processing are solved through the close fit between the workpiece and the positioning surface.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the specification only describe the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A clamping tool, suitable for clamping different types of center rails and wing rail inlay blocks, characterized in that: The electromagnetic base comprises a base (1) and two positioning seats (2) symmetrically located at the left and right sides of the base (1), wherein the inner side surface of the positioning seat (2) forms a transverse positioning surface (3), and the inner side surfaces of the two positioning seats (2) form a vertical positioning surface (4) at the upper surface of the base (1), and the vertical positioning surface (4) and the two transverse positioning surfaces (3) enclose a long strip concave clamping cavity suitable for clamping a core rail (10) and a wing rail mosaic block (11) respectively. A positioning adjustment component is provided in the clamping cavity, and the vertical positioning surface (4) and the two opposite lateral positioning surfaces (3) can be separately controlled for magnetization and demagnetization, so that the magnetic forces of the two lateral positioning surfaces (3) do not interfere with each other. After power is supplied, the lateral positioning surface (3) and the vertical positioning surface (4) that are in contact with the workpiece form magnetic suction surfaces for magnetically fixing the workpiece. The side surfaces of the two positioning seats (2) are provided with auxiliary clamping structures for auxiliary clamping of the workpiece, and the electromagnetic base is provided with a fixing structure for fixing it on the machine tool workbench.

2. The clamping tool according to claim 1, characterized in that: The positioning adjustment component comprises a first magnetic positioning adjustment block (9) suitable for cooperating with the clamping center rail (10).

3. The clamping tool according to claim 1, characterized in that: The positioning and adjustment component comprises a second magnetic positioning and adjustment block (13) suitable for cooperating with and clamping the wing rail inlay block (11).

4. The clamping tool according to claim 2 or 3, characterized in that: The positioning adjustment component also includes a third magnetic positioning adjustment block (12) arranged in the long concave clamping cavity for raising the center rail (10) or the wing rail inlay block (11) when the tool interferes with the positioning seat (2).

5. The clamping tool according to claim 2, characterized in that: The first magnetic positioning adjustment block (9) has a flat surface on one side that fits the transverse positioning surface (3), and the other side surface is an inclined surface with the same slope as the first and second side surfaces of the center rail (10).

6. The clamping tool according to claim 1, characterized in that: The auxiliary tightening structure comprises a plurality of bolt holes (6) which are opened on the side of the positioning seat (2) along the length direction and penetrate the positioning seat (2), and tightening bolts (15) arranged in the bolt holes (6).

7. The clamping tool according to claim 1, characterized in that: The fixing structure comprises a plurality of first positioning keys (8) arranged along the center line on the bottom surface of the base (1) and used for inserting into the T-slot of the machine tool worktable to achieve positioning, a mounting hole (5) arranged along the center line on the top surface of the positioning seat (2) and penetrating the positioning seat (2) and the base (1), and a T-bolt arranged in the mounting hole (5) and used for inserting into the T-slot of the machine tool worktable.

8. The clamping tool according to claim 5, characterized in that: The first magnetic positioning adjustment block (9) is provided with a second positioning key (14) on a plane that fits the transverse positioning surface (3), and the transverse positioning surface (3) is provided with a keyway (7) that is plugged into and fits with the second positioning key (14).

9. The clamping tool according to claim 3, characterized in that: The bottom surface of the second magnetic conductive positioning adjustment block (13) is a plane, and the top surface is an inclined surface.

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