Machining tool for fixing rail piece

Abstract

The invention belongs to the technical field of machining tools, and particularly relates to a machining tool for fixing a rail piece, the machining tool comprises a main connecting plate and two ground rails, the two ground rails are attracted to two electromagnetic clamps respectively, limiting grooves are formed in the ground rails, and the main connecting plate is clamped in the limiting grooves; a first positioning assembly for horizontally positioning the main connecting plate and a second positioning assembly for vertically positioning the main connecting plate are arranged on the main connecting plate, a rail part is fixedly mounted on the main connecting plate, and a rail part positioning mechanism for positioning the rail part is further arranged on the main connecting plate. The main connecting plate is installed on an existing electromagnetic clamp through the ground rail, the rail piece is placed on the main connecting plate, then the rail piece is positioned and fixed through the rail piece positioning mechanism, and the rail piece is stably clamped under the condition that the existing electromagnetic clamp is not disassembled.

Description

Technical Field

[0001] The invention belongs to the technical field of processing tools, and in particular relates to a processing tool for fixing rail members. Background Art

[0002] With the development of the railway turnout industry, the China Academy of Railway Sciences has introduced a solution to replace cast switch with assembled switch made of high manganese steel. The advantage is that the easily worn parts are designed into replaceable parts, such as heart rails, inserts, etc., and high manganese steel materials with better impact resistance and wear resistance are used.

[0003] The advantage of manganese steel rails is that their waist is straight and can be positioned. The disadvantage is that they are not magnetic and cannot be magnetically attracted on the existing electromagnetic clamps of CNC machine tools. Moreover, when clamping manganese steel rails on the electromagnetic clamps, if the manganese steel rails are clamped upright, the bottom of the rails will interfere with the side magnetic pads. If the manganese steel rails are clamped upside down, the head of the rails will interfere with the side magnetic pads, resulting in the inability to clamp the manganese steel rails normally. If the electromagnetic clamps on the CNC machine tools are disassembled before processing the manganese steel rails, it will take a lot of manpower and time, and the cost is high. Summary of the invention

[0004] In order to solve the problems in the above-mentioned background technology, the present invention provides a processing tool for fixing rail parts, in which the main connecting plate is installed on the existing electromagnetic clamp through the ground rail, the rail part is placed on the main connecting plate, and then the rail part is positioned and fixed by the rail part positioning mechanism, thereby realizing stable clamping of the rail part without disassembling the existing electromagnetic clamp.

[0005] The present invention provides a processing tool for fixing rail parts, which is installed on a machine tool workbench. Two electromagnetic clamps are arranged on the machine tool workbench, including a main connecting plate and two ground rails. The two ground rails are respectively adsorbed on the two electromagnetic clamps. Limiting grooves are arranged in the ground rails. The main connecting plate is clamped in the limiting grooves. A first positioning component for horizontally positioning the main connecting plate and a second positioning component for vertically positioning the main connecting plate are arranged on the main connecting plate. A rail part is fixedly installed on the main connecting plate, and a rail part positioning mechanism for positioning the rail part is also arranged on the main connecting plate.

[0006] Furthermore, the first positioning assembly includes an abutment plate and a fixing plate arranged on the side wall of the main connecting plate, the abutment plate and the fixing plate are located on both sides of the two ground rails, the abutment plate abuts against one of the ground rails, and a first fixing nut is arranged on the fixing plate, and a tightening bolt is connected to the internal thread of the first fixing nut, and the tightening bolt abuts against the other ground rail.

[0007] Furthermore, a plurality of parallel T-slots are provided on the machine tool workbench, and the second positioning assembly includes a support column, the top end of the support column is arranged on the bottom surface of the main connecting plate, and the bottom end of the support column is installed on the machine tool workbench through a T-slot bolt, and the T-slot bolt is arranged in the T-slot.

[0008] Furthermore, a plurality of parallel mounting grooves are provided on the top surface of the main connecting plate, and the rail positioning mechanism includes an end positioning member, a plurality of side positioning members, a plurality of third positioning components for horizontal positioning, and a plurality of fourth positioning components for vertical positioning. The end positioning member abuts against the end surface of the rail, the plurality of side positioning members are all located on the same side of the rail and abut against the waist of the rail, and the third positioning component and the fourth positioning component are both located on the side of the rail away from the side positioning member.

[0009] Furthermore, the third positioning assembly includes a support plate, which is slidably arranged in the installation groove, and a second fixing nut is arranged on the top of the support plate. The second fixing nut is threadedly connected with a positioning bolt, and the positioning bolt is pressed against the rail member.

[0010] Furthermore, one end of the positioning bolt close to the rail is rotatably connected with a sleeve, and the sleeve is pressed against the rail.

[0011] Furthermore, the fourth positioning assembly includes a pressure plate, an end of the pressure plate away from the rail member is vertically threadedly connected with a height-adjusting bolt, the bottom end of the height-adjusting bolt is arranged in the mounting groove, the end of the pressure plate close to the rail member is pressed on the bottom of the rail member, a T-type quick-release bolt vertically penetrates the pressure plate, the T-type quick-release bolt is located between the height-adjusting bolt and the rail member, the bottom end of the T-type quick-release bolt is arranged in the mounting groove, and the T-type quick-release bolt presses the pressure plate downward.

[0012] Furthermore, the pressing plate is configured as a Z-shaped pressing plate.

[0013] Furthermore, a bolt hole is opened in the rail member, and the fourth positioning assembly includes a pressure plate, an end of the pressure plate away from the rail member is vertically threadedly connected with a height-adjusting bolt, the bottom end of the height-adjusting bolt is arranged in the mounting groove, a T-type quick-release bolt vertically penetrates the pressure plate, the T-type quick-release bolt is located between the height-adjusting bolt and the rail member, the bottom end of the T-type quick-release bolt is arranged in the mounting groove, a positioning and clamping column is arranged at one end of the pressure plate close to the rail member, the positioning and clamping column is inserted in the bolt hole, the T-type quick-release bolt presses the pressure plate downward, and the pressure plate presses the rail member downward through the positioning and clamping column.

[0014] Furthermore, a plurality of pads are arranged on the main connecting plate, the pads are placed on the main connecting plate and then milled, and the rails are placed on the pads.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The main connecting plate is installed on the existing electromagnetic clamp through the ground rail, and the main connecting plate is stabilized by the second positioning assembly and the third positioning assembly. The rail member is placed on the main connecting plate, and then the rail member positioning mechanism positions and fixes the rail member, thereby achieving stable clamping of the rail member without disassembling the existing electromagnetic clamp, which is convenient for the milling processing of the rail member.

[0017] (2) After the tooling is installed on the machine tool workbench for the first time, in order to eliminate the cumulative error, the pad is usually self-milled before the rail parts are processed to ensure the overall flatness and positioning accuracy of the tooling.

[0018] (3) Setting the pressure plate into a Z shape can reduce the height of the pressure plate and the T-type quick-release bolt, thereby avoiding milling interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of Example 1;

[0021] Figure 2 A schematic diagram of the structure of the main connecting plate positioning mechanism;

[0022] Figure 3 It is a front view of Example 1;

[0023] Figure 4 It is a structural schematic diagram of the rail positioning mechanism in Example 1;

[0024] Figure 5 is a cross-sectional view of the fourth positioning assembly in Example 2;

[0025] Description of reference numerals: 1, machine tool worktable; 10, T-slot; 2, electromagnetic clamp; 20, electromagnetic magnetic seat; 21, bottom magnetic pad; 22, side magnetic pad; 3, main connecting plate; 30, mounting slot; 4, ground rail; 40, limit slot; 5, main connecting plate positioning mechanism; 50, first positioning assembly; 500, abutment plate; 501, fixing plate; 502, first fixing nut; 503, tightening bolt; 51, second positioning assembly; 510 , support column; 511, T-slot bolt; 6, spacer; 7, rail; 70, bolt hole; 8, rail positioning mechanism; 80, end positioning piece; 81, side positioning piece; 82, third positioning assembly; 820, support plate; 821, second fixing nut; 822, positioning bolt; 823, sleeve; 83, fourth positioning assembly; 830, pressure plate; 831, height adjustment bolt; 832, T-type quick-release bolt; 833, positioning and clamping column. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work belong to the protection scope of the present invention.

[0027] The following is combined with Figure 1 To Attachment Figure 5 The present invention is described in detail with reference to specific embodiments.

[0028] Example 1

[0029] Reference Figure 1-4 A processing tool for fixing rail members provided in this embodiment is installed on a machine tool workbench 1. A plurality of parallel T-slots 10 are provided on the machine tool workbench 1 to facilitate clamping of other positioning components. Two electromagnetic clamps 2 are installed on the machine tool workbench 1. The electromagnetic clamps 2 are prior art, including an electromagnetic magnetic base 20, a bottom magnetic conductive pad 21 and a side magnetic conductive pad 22. The installation directions of the two electromagnetic clamps 2 are opposite.

[0030] A processing tool for fixing rail members includes a main connecting plate 3 and two ground rails 4, the two ground rails 4 are respectively adsorbed on two left and right electromagnetic clamps 2, the bottom surface of the ground rail 4 is adsorbed on the bottom attraction magnetic conductive pad 21, and the side surface of the ground rail 4 is adsorbed on the side attraction magnetic conductive pad 22, so as to fix the position of the ground rail 4; a limiting groove 40 is opened in the ground rail 4, the main connecting plate 3 is clamped in the limiting groove 40, and the side wall of the main connecting plate 3 is pressed against the groove wall of the limiting groove 40, so as to limit the displacement of the main connecting plate 3 in the length direction of the ground rail 4.

[0031] A main connecting plate positioning mechanism 5 is provided on the main connecting plate 3, and the main connecting plate positioning mechanism 5 includes two groups of first positioning components 50 and multiple groups of second positioning components 51. The first positioning component 50 includes an abutment plate 500 and a fixing plate 501. The abutment plate 500 and the fixing plate 501 are both fixedly connected to the side wall of the main connecting plate 3. The abutment plate 500 and the fixing plate 501 are located on both sides of the two ground rails 4. The abutment plate 500 abuts against the side wall of one of the ground rails 4. A first fixing nut 502 is fixedly connected to the fixing plate 501. A tightening bolt 503 is threadedly connected to the first fixing nut 502. The tightening bolt 503 abuts against the side wall of the other ground rail 4, thereby limiting the displacement of the main connecting plate 3 in a horizontal plane perpendicular to the length direction of the ground rail 4. The two groups of first positioning components 50 are located at both ends of the main connecting plate 3.

[0032] Multiple groups of second positioning components 51 are arranged between the main connecting plate 3 and the machine tool worktable 1. The second positioning components 51 include a support column 510. The top end of the support column 510 is fixedly connected to the bottom surface of the main connecting plate 3. The bottom end of the support column 510 is installed on the machine tool worktable 1 through two T-slot bolts 511, thereby limiting the displacement of the main connecting plate 3 in the vertical direction and improving the stability of the main connecting plate 3; the T-slot bolts 511 slide in the T-slot 10 of the machine tool worktable 1, thereby adjusting the position of the support column 510.

[0033] A plurality of parallel T-shaped mounting grooves 30 are provided on the top surface of the main connecting plate 3, and the mounting grooves 30 are provided along the length direction of the T-shaped grooves 10. A plurality of pads 6 are placed on the top surface of the main connecting plate 3, and the plurality of pads 6 are arranged in sequence in the same mounting groove 30. A rail member 7 is placed on the pad 6, and the rail member 7 is placed along the length direction of the ground rail 4. After the tooling is installed on the machine tool workbench 1 for the first time, in order to eliminate the accumulated error, the pad 6 is usually self-milled before the rail member 7 is processed, so as to ensure the overall flatness and positioning accuracy of the tooling.

[0034] A rail member positioning mechanism 8 is provided on the main connecting plate 3, and the rail member positioning mechanism 8 includes an end positioning member 80, a plurality of side positioning members 81, a plurality of third positioning components 82 and a plurality of fourth positioning components 83. The end positioning member 80 abuts against one of the end faces of the rail member 7. The end positioning member 80 is used to locate the installation position of the rail member 7 on the main connecting plate 3. The other end of the rail member 7 does not need to be limited because the milling force of the machine tool is not so large, and there is friction between the third positioning component 82 and the fourth positioning component 83 and the rail member 7, which is sufficient to ensure the stability of the rail member 7; the plurality of side positioning members 81 are all located on the same side of the rail member 7 and abut against the rail waist of the rail member 7 at the same time, and the third positioning component 82 is located on the side away from the rail member 7 On one side of the surface positioning member 81, the third positioning assembly 82 includes a support plate 820, which is slidably arranged in the installation groove 30. A second fixing nut 821 is fixedly connected to the top of the support plate 820, and a positioning bolt 822 is threadedly connected to the second fixing nut 821. One end of the positioning bolt 822 is pressed against the waist of the rail member 7, and a sleeve 823 is rotatably connected to the end of the positioning bolt 822 close to the rail member 7. The positioning bolt 822 is pressed against the rail member 7 through the sleeve 823, and the sleeve 823 can reduce the damage of the positioning bolt 822 to the rail member 7; the third positioning assembly 82 and the side positioning member 81 press against the rail member 7 from both sides of the rail member 7, thereby limiting the displacement of the rail member 7 in the horizontal plane perpendicular to the length direction of the rail member 7.

[0035] The fourth positioning assembly 83 is also located on the side of the rail member 7 away from the side positioning assembly 81. The fourth positioning assembly 83 includes a Z-shaped pressing plate 830. The end of the pressing plate 830 away from the rail member 7 is vertically threadedly connected with a height-adjusting bolt 831. The bottom end of the height-adjusting bolt 831 is arranged in the mounting groove 30, and the height-adjusting bolt 831 can adjust the height of the pressing plate 830; the end of the pressing plate 830 close to the rail member 7 is pressed on the rail bottom of the rail member 7, and a T-shaped quick-release bolt 832 vertically penetrates the pressing plate 830. The T-shaped quick-release bolt 832 is located between the height-adjusting bolt and the rail member 7, and the bottom end of the T-shaped quick-release bolt 832 is arranged in the mounting groove 30. The T-shaped quick-release bolt 832 presses the pressing plate 830 downward, so that the pressing plate 830 presses the rail bottom of the rail member 7, thereby limiting the displacement of the rail member 7 in the vertical direction; the pressing plate 830 is arranged in a Z shape to reduce the height of the pressing plate 830 and the T-shaped quick-release bolt 832, thereby avoiding milling interference.

[0036] like Figure 1 As shown, in this embodiment, two rail members 7 and two sets of rail positioning mechanisms 8 are installed on the main connecting plate 3, which can be adapted to a dual-axis CNC machine tool and process two rail members 7 at the same time; of course, in other embodiments, the number of rail members 7 installed on the main connecting plate 3 can be adjusted according to the type of CNC machine tool, and it is only necessary to open a corresponding number of installation grooves 30 on the main connecting plate 3.

[0037] Example 2

[0038] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the pressure plate 830 does not directly press the rail member 7 downward. The fourth positioning assembly 83 also includes a positioning and clamping column 833. The positioning and clamping column 833 is fixedly connected to one end of the pressure plate 830 close to the rail member 7. The rail member 7 is provided with a bolt hole 70 in the previous process. The positioning and clamping column 833 is inserted into the bolt hole 70. The pressure plate 830 presses the rail member 7 downward through the positioning and clamping column 833. This method is used to press the rail member 7 with a missing rail bottom. The pressure plate 830 cannot directly press the rail bottom of the rail member 7, so the pressure plate 830 presses the rail member 7 downward through the positioning and clamping column 833.

[0039] The present invention is further described above with the aid of specific embodiments. However, 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 the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A processing tool for fixing a rail member, mounted on a machine tool workbench (1), wherein two electromagnetic clamps (2) are arranged on the machine tool workbench (1), characterized in that: The invention comprises a main connecting plate (3) and two ground rails (4), wherein the two ground rails (4) are respectively adsorbed on the two electromagnetic clamps (2), wherein a limiting groove (40) is provided in the ground rail (4), wherein the main connecting plate (3) is clamped in the limiting groove (40), wherein the main connecting plate (3) is provided with a first positioning component (50) for horizontally positioning the main connecting plate (3) and a second positioning component (51) for vertically positioning the main connecting plate (3), wherein a rail member (7) is fixedly mounted on the main connecting plate (3), and wherein the main connecting plate (3) is also provided with a rail member positioning mechanism (8) for positioning the rail member (7).

2. The processing tool for fixing rail members according to claim 1, characterized in that: The first positioning assembly (50) comprises an abutment plate (500) and a fixing plate (501) arranged on the side wall of the main connecting plate (3); the abutment plate (500) and the fixing plate (501) are located on both sides of the two ground rails (4); the abutment plate (500) abuts against one of the ground rails (4); a first fixing nut (502) is arranged on the fixing plate (501); a tightening bolt (503) is connected to the inner thread of the first fixing nut (502); and the tightening bolt (503) abuts against the other ground rail (4).

3. The processing tool for fixing rail members according to claim 1, characterized in that: The machine tool workbench (1) is provided with a plurality of T-slots (10) arranged in parallel, the second positioning assembly (51) comprises a support column (510), the top end of the support column (510) is arranged on the bottom surface of the main connecting plate (3), the bottom end of the support column (510) is mounted on the machine tool workbench (1) via a T-slot bolt (511), and the T-slot bolt (511) is arranged in the T-slot (10).

4. The processing tool for fixing rail members according to claim 1, characterized in that: A plurality of parallel mounting grooves (30) are provided on the top surface of the main connecting plate (3); the rail member positioning mechanism (8) comprises an end positioning member (80), a plurality of side positioning members (81), a plurality of third positioning assemblies (82) for horizontal positioning, and a plurality of fourth positioning assemblies (83) for vertical positioning; the end positioning member (80) abuts against the end surface of the rail member (7); the plurality of side positioning members (81) are all located on the same side of the rail member (7) and abut against the waist of the rail member (7); the third positioning assembly (82) and the fourth positioning assembly (83) are both located on the side of the rail member (7) away from the side positioning member (81).

5. The processing tool for fixing rail members according to claim 4, characterized in that: The third positioning assembly (82) includes a support plate (820), the support plate (820) is slidably arranged in the installation groove (30), a second fixing nut (821) is arranged at the top end of the support plate (820), a positioning bolt (822) is threadedly connected to the inner thread of the second fixing nut (821), and the positioning bolt (822) is pressed against the rail member (7).

6. The processing tool for fixing rail members according to claim 5, characterized in that: One end of the positioning bolt (822) close to the rail member (7) is rotatably connected to a sleeve (823), and the sleeve (823) is pressed tightly against the rail member (7).

7. The processing tool for fixing rail members according to claim 4, characterized in that: The fourth positioning assembly (83) comprises a pressure plate (830), one end of the pressure plate (830) away from the rail member (7) is vertically threadedly connected with a height adjustment bolt (831), the bottom end of the height adjustment bolt (831) is arranged in the mounting groove (30), the end of the pressure plate (830) close to the rail member (7) is pressed on the rail bottom of the rail member (7), a T-shaped quick-release bolt (832) vertically penetrates the pressure plate (830), the T-shaped quick-release bolt (832) is located between the height adjustment bolt (831) and the rail member (7), the bottom end of the T-shaped quick-release bolt (832) is arranged in the mounting groove (30), and the T-shaped quick-release bolt (832) presses the pressure plate (830) downward.

8. The processing tool for fixing rail members according to claim 7, characterized in that: The pressing plate (830) is configured as a Z-shaped pressing plate (830).

9. The processing tool for fixing rail members according to claim 4, characterized in that: The rail member (7) is provided with a bolt hole (70), the fourth positioning assembly (83) comprises a pressing plate (830), one end of the pressing plate (830) away from the rail member (7) is vertically threadedly connected with a height adjustment bolt (831), the bottom end of the height adjustment bolt (831) is arranged in the mounting groove (30), a T-shaped quick-release bolt (832) vertically penetrates the pressing plate (830), and the T-shaped quick-release bolt (832) is located between the height adjustment bolt (831) and the rail member (7). The bottom end of the T-shaped quick-release bolt (832) is arranged in the installation groove (30) between the rail member (7), and a positioning and clamping column (833) is arranged at one end of the pressure plate (830) close to the rail member (7). The positioning and clamping column (833) is inserted into the bolt hole (70). The T-shaped quick-release bolt (832) presses the pressure plate (830) downward, and the pressure plate (830) presses the rail member (7) downward through the positioning and clamping column (833).

10. The processing tool for fixing rail members according to claim 1, characterized in that: A plurality of cushion blocks (6) are arranged on the main connecting plate (3); the cushion blocks (6) are placed on the main connecting plate (3) and then milled; and the rail members (7) are placed on the cushion blocks (6).

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