Clamping device of rack swing grinding machine

Abstract

The utility model relates to a clamping device of a rack swing grinding machine, and belongs to the technical field of rack machining equipment. The clamping device of the rack swing grinding machine comprises a platen, a lower die body, a left clamping assembly, a right clamping assembly and a locking assembly. A lower die body is arranged in the middle of the bedplate; a left clamping component is arranged on the bedplate at one end of the lower die body; a right clamping assembly is arranged on the platen at the other end of the lower die body; a locking component is arranged on the bedplate between the lower die body and the right clamping component; each of the left clamping assembly and the right clamping assembly comprises a clamping cylinder and a clamping pin shaft; a clamping pin shaft is arranged on the bedplate through a clamping cylinder; and one end of the clamping pin shaft is provided with an anti-rotation latch. According to the clamping device of the rack swing grinding machine, the problem that an existing clamping device is poor in quality is solved, and the clamping device is particularly suitable for the use requirement of rack swing grinding machining.

Description

Technical Field

[0001] The utility model relates to a clamping device for a rack swing mill, belonging to the technical field of rack processing equipment. Background Art

[0002] In the field of rack machining technology, rack oscillating machines are often used to complete rack machining. Existing rack oscillating machines, such as the invention patent with authorization announcement number CN105108019B, use a linear oscillating machining method to process steering gear racks. This machine uses a workpiece clamping cylinder at one end and a fixed center at the other end to clamp the workpiece. While clamping the workpiece at both ends, a clamping cylinder is also used to clamp the workpiece. While the clamping device of the existing rack oscillating machine can meet the needs of use to a certain extent, it still has the following problems:

[0003] 1. The existing clamping method has the problem that the workpiece is very likely to rotate during processing due to insufficient clamping force.

[0004] 2. The existing clamping method uses a fixed center at one end and a workpiece clamping cylinder at the other end to fix the workpiece. Although the existing method can fix the workpiece, the force conditions at both ends are not exactly the same during the workpiece processing, which leads to poor quality during the rack processing.

[0005] Therefore, it is necessary to develop a new clamping device to solve the problem of poor quality of the existing clamping devices. Summary of the Invention

[0006] The purpose of the utility model is to provide a clamping device for a rack swing mill with a compact structure and ingenious design to solve the problem of poor quality of existing clamping devices.

[0007] The technical solution of the utility model is:

[0008] A clamping device for a rack swing mill comprises a table, a lower die body, a left clamping assembly, a right clamping assembly and a locking assembly; the lower die body is mounted in the middle of the table; the left clamping assembly is mounted on the table at one end of the lower die body; the right clamping assembly is mounted on the table at the other end of the lower die body; the locking assembly is mounted on the table between the lower die body and the right clamping assembly; it is characterized in that: the left clamping assembly and the right clamping assembly both comprise a clamping cylinder and a clamping pin; the clamping pin is mounted on the table via the clamping cylinder; and an anti-rotation tooth is provided at one end of the clamping pin.

[0009] The cross section of the anti-rotation tooth is a triangular structure.

[0010] The left clamping assembly and the right clamping assembly both include guide seats; the guide seats are fixedly mounted on the table on one side of the clamping cylinder of the left clamping assembly and the right clamping assembly; the clamping pin on the clamping cylinder passes through the corresponding guide seat and is slidably connected thereto.

[0011] The clamping pin is provided with a guide rail; the clamping pin is slidably connected to the corresponding guide seat through the guide rail.

[0012] The locking assembly includes a locking base, a pressing slider, a pressing cylinder, a locking slider and a locking cylinder; the locking base is installed on the table; the pressing slider is symmetrically slid on the locking base through a guide rail; the pressing cylinder is installed on the locking base on one side of the pressing slider; the pressing cylinder is connected to the corresponding pressing slider; the locking slider is longitudinally slidably installed on the table outside the pressing slider; the locking cylinder is installed on the locking base at one end of the locking slider; the locking cylinder is connected to the corresponding locking slider; the locking slider is intermittently contacted and connected with the corresponding pressing slider.

[0013] The inner side surface of the pressing slide block is provided with a pressing arc opening.

[0014] The inner side of the locking slider is provided with a plurality of pressing inclined surfaces at intervals; the outer side of the pressing slider is provided with pressed inclined surfaces at intervals; the pressing inclined surfaces are intermittently contacted and connected with the corresponding pressed inclined surfaces.

[0015] The advantages of the present invention are:

[0016] This rack-and-pinion oscillating mill clamping device features a compact structure and ingenious design. Multiple structural features enhance the clamping force, and an anti-rotation tooth is incorporated into one end of the clamping pin to prevent rotation. This solves the poor quality issues associated with existing clamping devices and is particularly well-suited for rack-and-pinion oscillating milling applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0019] Figure 3 This is a structural diagram of the left clamping assembly of the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 for Figure 3 Schematic diagram of the structure after removing the guide seat;

[0022] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 7 This is a schematic structural diagram of the right clamping assembly and the locking assembly of the utility model;

[0024] Figure 8 This is a schematic structural diagram of the locking assembly of the utility model;

[0025] Figure 9 for Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 10 for Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0027] Figure 11 for Figure 10 Schematic diagram of the structure after removing the guide seat;

[0028] Figure 12 This is a structural diagram of the workpiece working state;

[0029] Figure 13 for Figure 12 Schematic diagram of the enlarged structure at E in the middle.

[0030] In the figure: 1. Table; 2. Lower mold body; 3. Left clamping assembly; 4. Right clamping assembly; 5. Locking assembly; 6. Clamping cylinder; 7. Clamping pin; 8. Anti-rotation gear; 9. Guide seat; 10. Guide slide; 11. Locking base; 12. Clamping slide; 13. Clamping cylinder; 14. Locking slide; 15. Locking cylinder; 16. Clamping arc; 17. Compression inclined surface; 18. Pressed inclined surface; 19. Workpiece. DETAILED DESCRIPTION

[0031] The clamping device of the rack swing mill includes a table 1, a lower mold body 2, a left clamping assembly 3, a right clamping assembly 4 and a locking assembly 5 (see the appendix of the manual). Figure 1 and 2 ).

[0032] A lower die body 2 is mounted in the middle of the table 1; a workpiece 19 (rack) can be placed on the lower die body 2 during operation.

[0033] The left clamping assembly 3 is installed on the table 1 at one end of the lower mold body 2; the right clamping assembly 4 is installed on the table 1 at the other end of the lower mold body 2 (see the appendix of the manual). Figure 1 and 2 ).

[0034] The left clamping assembly 3 and the right clamping assembly 4 each include a clamping cylinder 6 and a clamping pin 7; the clamping pin 7 is mounted on the table 1 via the clamping cylinder 6; one end of the clamping pin 7 is provided with an anti-rotation tooth 8 (see the appendix of the manual). Figure 6 and 11 The cross section of the anti-rotation tooth 8 is a triangular structure (see the appendix of the manual). Figure 6 ).

[0035] The left clamping assembly 3 and the right clamping assembly 4 both include a guide seat 9; the guide seat 9 is fixedly mounted on the table 1 on one side of the clamping cylinder 6 of the left clamping assembly 3 and the right clamping assembly 4; the clamping pin 7 on the clamping cylinder 6 passes through the corresponding guide seat 9 and is slidably connected to it. A guide rail 10 is provided on the clamping pin 7; the clamping pin 7 is slidably connected to the corresponding guide seat 9 through the guide rail 10 (see the appendix of the manual). Figure 4 、 6 and 11).

[0036] The purpose of arranging the left clamping assembly 3 and the right clamping assembly 4 in this way is to enable the anti-rotation teeth 8 to press the ends of the workpiece 19 to deform them and finally get stuck into the interior of the end of the workpiece 19 when the clamping pins 7 of the left clamping assembly 3 and the clamping pins 7 of the right clamping assembly 4 clamp the workpiece 19 from both ends during operation. During this process, the clamping pins 7 can only slide back and forth along the guide seat 9 under the action of the guide rail 10. In this way, when the workpiece 19 is subjected to torque and the clamping pins 7 have a tendency to rotate, the guide seat 9 can hinder the rotation of the clamping pins 7 through the guide rail 10, thereby achieving the purpose of clamping the workpiece 19 and preventing it from rotating.

[0037] The locking assembly 5 is installed on the table 1 between the lower mold body 2 and the right clamping assembly 4 (see the appendix of the manual). Figure 1 and 2 The locking assembly 5 includes a locking base 11, a pressing slide 12, a pressing cylinder 13, a locking slide 14 and a locking cylinder 15 (see the appendix of the manual). Figure 8 ).

[0038] The table 1 is provided with a locking base 11; a pressing slider 12 is symmetrically slidably mounted on the locking base 11 through a guide rail; a pressing cylinder 13 is mounted on the locking base 11 on one side of the pressing slider 12; the pressing cylinder 13 is connected to the corresponding pressing slider 12 (see the appendix of the manual). Figure 8 ).

[0039] During operation, under the action of the clamping cylinder 13, the clamping slider 12 can clamp the workpiece 19 from both sides. The inner side of the clamping slider 12 is provided with a clamping arc 16 (see the appendix of the manual). Figure 8The purpose of providing the clamping arc 16 is to enable the clamping slider 12 to clamp and fix the workpiece 19 through the arc surface of the clamping arc 16 during operation, thereby avoiding the problem of relatively low clamping strength caused by the clamping slider 12 contacting the workpiece 19 through line contact.

[0040] A locking slider 14 is longitudinally slidably installed on the table 1 outside the clamping slider 12; a locking cylinder 15 is installed on the locking base 11 at one end of the locking slider 14; the locking cylinder 15 is connected to the corresponding locking slider 14; the locking slider 14 is intermittently contacted with the corresponding clamping slider 12.

[0041] The inner side of the locking slider 14 is provided with a plurality of pressing inclined surfaces 17 at intervals; the outer side of the pressing slider 12 is provided with pressed inclined surfaces 18 at intervals; the pressing inclined surfaces 17 are intermittently connected with the corresponding pressed inclined surfaces 18 (see the appendix of the manual). Figure 8 and 9 ).

[0042] The purpose of configuring the locking slider 14 and the pressing slider 12 in this manner is to ensure that, during operation, after the pressing slider 12 clamps the workpiece 19 from both sides, the locking cylinder 15 pushes the locking slider 14 forward. As the locking slider 14 moves forward, the pressing slider 12 is pressed against the pressing inclined surface 17 and the pressed inclined surface 18, thereby further locking the pressing slider 12. This prevents the pressing slider 12 from moving backward and causing the workpiece 19 to loosen when excessive force is applied to the pressing slider 12 during operation.

[0043] During operation, the clamping device of this rack-and-pinion milling machine first places a workpiece 19 onto the lower die body 2. The left and right clamping assemblies 3 and 4 then operate to clamp the workpiece 19 from both ends. During this process, as the clamping pin 7 secures the workpiece 19 from both ends, the anti-rotation teeth 8 compress the ends of the workpiece 19, deforming them and eventually locking into the interior of the workpiece 19. The clamping slide 12 of the locking assembly 5 then operates to clamp the workpiece 19 from both sides. After the clamping slide 12 secures the workpiece 19, the locking cylinder 15 pushes the locking slide 14 forward. As the locking slide 14 moves forward, it compresses the compressing bevel 17 and the pressed bevel 18, squeezing the clamping slide 12 to lock it. This secures the workpiece 19. Once machining is complete, the components are reset, and the clamping device enters the next operating cycle.

[0044] This rack-and-pinion oscillating mill clamping device features a compact structure and ingenious design. Multiple structural features enhance the clamping force, and an anti-rotation tooth 8 is provided at one end of the clamping pin 7 to prevent rotation. This solves the poor quality issues of existing clamping devices and is particularly well-suited for rack-and-pinion oscillating milling applications.

Claims

1. A clamping device for a rack swing mill, comprising a table (1), a lower mold body (2), a left clamping assembly (3), a right clamping assembly (4) and a locking assembly (5); the lower mold body (2) is mounted in the middle of the table (1); the left clamping assembly (3) is mounted on the table (1) at one end of the lower mold body (2); the right clamping assembly (4) is mounted on the table (1) at the other end of the lower mold body (2); and the locking assembly (5) is mounted on the table (1) between the lower mold body (2) and the right clamping assembly (4); the characteristics of the device are: The left clamping assembly (3) and the right clamping assembly (4) both include a clamping cylinder (6) and a clamping pin (7); the table (1) is provided with a clamping pin (7) via the clamping cylinder (6); and one end of the clamping pin (7) is provided with an anti-rotation tooth (8).

2. The clamping device of a rack swing mill according to claim 1, characterized in that: The cross section of the anti-rotation tooth (8) is a triangular structure.

3. The clamping device of a rack swing mill according to claim 1, characterized in that: The left clamping assembly (3) and the right clamping assembly (4) both include a guide seat (9); a guide seat (9) is fixedly mounted on a table (1) on one side of the clamping cylinder (6) on the left clamping assembly (3) and the right clamping assembly (4); and a clamping pin (7) on the clamping cylinder (6) passes through the corresponding guide seat (9) and is slidably connected thereto.

4. The clamping device of a rack-type oscillating mill according to claim 3, characterized in that: The clamping pin shaft (7) is provided with a guide rail (10); the clamping pin shaft (7) is slidably connected to the corresponding guide seat (9) via the guide rail (10).

5. The clamping device of a rack-type oscillating mill according to claim 1, characterized in that: The locking assembly (5) includes a locking base (11), a pressing slider (12), a pressing cylinder (13), a locking slider (14) and a locking cylinder (15); the locking base (11) is installed on the table (1); the pressing slider (12) is symmetrically slidably installed on the locking base (11) through a guide rail; the pressing cylinder (13) is installed on the locking base (11) on one side of the pressing slider (12); the pressing cylinder (13) is connected to the corresponding pressing slider (12); the locking slider (14) is longitudinally slidably installed on the table (1) outside the pressing slider (12); the locking cylinder (15) is installed on the locking base (11) at one end of the locking slider (14); the locking cylinder (15) is connected to the corresponding locking slider (14); the locking slider (14) is intermittently contacted with the corresponding pressing slider (12).

6. The clamping device of a rack-type oscillating roller mill according to claim 5, characterized in that: The inner side surface of the pressing slider (12) is provided with a pressing arc opening (16).

7. The clamping device of a rack-type oscillating roller mill according to claim 5, characterized in that: The locking slider (14) is provided with a plurality of pressing inclined surfaces (17) at intervals on the inner side; the pressing slider (12) is provided with pressed inclined surfaces (18) at intervals on the outer side; the pressing inclined surfaces (17) are intermittently contacted and connected with the corresponding pressed inclined surfaces (18).

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