Gear milling clamp for steering rack

Abstract

The utility model relates to the technical field of steering rack machining, in particular to a gear milling machining clamp for a steering rack, which comprises a workbench, a first movable rod is rotatably mounted on the side surface of the workbench, a connecting rod is rotatably mounted at the end part of the first movable rod, and a movable rod is rotatably connected to the end part, far away from the first movable rod, of the connecting rod; the middle of the movable rod is rotationally connected with the side face of the workbench, a connecting rod is rotationally installed at the end, away from the connecting rod, of the movable rod, a second movable rod is rotationally installed at the end, away from the movable rod, of the connecting rod, and the end, away from the connecting rod, of the second movable rod is rotationally connected with the side face of the workbench. When the gear milling clamp for the steering rack is used for clamping a workpiece, the workpiece can be prevented from rotating, and the gear milling clamp is worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of steering rack processing, in particular to a steering rack milling processing fixture. Background Art

[0002] During the milling process of existing automobile steering racks, the steering rack needs to be fixed by a clamping device. However, the two ends of the steering rack workpiece are cylindrical. When the two ends of the rack workpiece are fixed by a clamping device, the workpiece is prone to rotation along its own central axis during the milling process. The clamping device can fix the workpiece and prevent it from deflecting, but it is difficult to enhance the stability of the workpiece in the radial direction, thus affecting the milling process. Utility Model Content

[0003] The utility model aims to solve the shortcoming in the prior art that a workpiece is prone to rotation during milling after the clamping device is fixed, and proposes a milling fixture for a steering rack.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A milling gear machining fixture for a steering rack is designed, comprising a workbench, a first movable rod being rotatably mounted on the side surface of the workbench, a connecting rod being rotatably mounted on the end of the first movable rod, a movable rod being rotatably connected to the end of the connecting rod away from the first movable rod, a middle portion of the movable rod being rotatably connected to the side surface of the workbench, a connecting rod being rotatably mounted on the end of the movable rod away from the connecting rod, a second movable rod being rotatably mounted on the end of the connecting rod away from the movable rod, a power mechanism being fixedly mounted on the outer side of the end of the movable rod connected to the connecting rod, and a support mechanism being fixedly mounted on the upper surface of the workbench;

[0006] A first clamping block and a second clamping block are fixedly mounted on surfaces of the first movable rod and the second movable rod that are close to each other, respectively.

[0007] Preferably, the power mechanism includes an active rod, the end of the active rod is fixedly connected to the end of the movable rod, a slider is slidingly provided inside the active rod, the upper end of the slider is rotatably connected to a rotating block, the upper end of the rotating block is fixedly installed with a first telescopic member, and the upper end of the first telescopic member is fixedly connected to the side of the workbench.

[0008] Preferably, the first movable rod, the connecting rod, the second movable rod, the link rod, the movable rod, the active rod and the first telescopic member are all located in the same vertical plane.

[0009] Preferably, the surfaces of the first clamping block and the second clamping block close to each other are arc-shaped and are fixedly mounted with anti-slip pads.

[0010] Preferably, the supporting mechanism includes a second telescopic member, the lower end of which is fixedly connected to the surface of the workbench and the upper end of which is fixedly mounted with a support.

[0011] The utility model proposes a milling gear processing fixture for a steering rack, which has the beneficial effect that: during use of the milling gear processing fixture for the steering rack, the height of the support can be adjusted by the second telescopic member, the first telescopic member can drive the rotating block to move downward, the rotating block can drive the active rod to move downward through the slider, and the active rod moves while driving the movable rod to rotate counterclockwise, and the counterclockwise rotation of the movable rod can drive the connecting rod to move downward and the connecting rod to move upward, the downward movement of the connecting rod can drive the first clamping block to move downward through the first movable rod, and the upward movement of the connecting rod can drive the second clamping block to move upward through the second movable rod, the first clamping block and the second clamping block are close to each other to clamp the workpiece, and the workpiece after clamping and fixing is not easy to deviate and rotate when the workpiece is milling, and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of a milling fixture for a steering rack proposed in the present invention;

[0013] Figure 2 The utility model is a schematic cross-sectional view of a fixture for milling teeth of a steering rack.

[0014] In the figure: 1. workbench; 2. first movable rod; 21. first clamping block; 3. anti-slip pad; 4. connecting rod; 5. second movable rod; 51. second clamping block; 6. connecting rod; 7. movable rod; 8. active rod; 9. slider; 10. rotating block; 11. first telescopic member; 12. second telescopic member; 13. support. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1: Reference Figure 1-2A milling gear machining fixture for a steering rack includes a workbench 1. A first movable rod 2 is rotatably mounted on the side of the workbench 1. A connecting rod 4 is rotatably mounted on the end of the first movable rod 2. The end of the connecting rod 4 away from the first movable rod 2 is rotatably connected to a movable rod 7. The middle part of the movable rod 7 is rotatably connected to the side of the workbench 1. A connecting rod 6 is rotatably mounted on the end of the movable rod 7 away from the connecting rod 4. A second movable rod 5 is rotatably mounted on the end of the connecting rod 6 away from the movable rod 7. The end of the second movable rod 5 away from the connecting rod 6 is rotatably connected to the side of the workbench 1. A power mechanism is fixedly mounted on the outer side of the end of the movable rod 7 connected to the connecting rod 4. The power mechanism can drive the middle part of the movable rod 7 to rotate. When the middle part of the movable rod 7 rotates, it drives the connecting rod 4 and the connecting rod 6 to move. Figure 2 From the perspective shown, the right end of the first movable rod 2, the left end of the second movable rod 5 and the middle part of the movable rod 7 are connected to the side of the workbench 1 for rotation, and their positions will not move, while the positions of other structures can move.

[0017] The surfaces on which the first movable rod 2 and the second movable rod 5 are close to each other are respectively fixedly installed with the first clamping block 21 and the second clamping block 51. When the first clamping block 21 and the second clamping block 51 are close to each other, they can clamp the workpiece. The surfaces on which the first clamping block 21 and the second clamping block 51 are close to each other are arc-shaped and are fixedly installed with anti-slip pads 3. The anti-slip pads 3 play an anti-slip role. When the clamping blocks clamp the workpiece through the anti-slip pads 3, the friction between the workpiece surface and the anti-slip pads 3 can ensure that the workpiece is not easily rotated during the gear milling process.

[0018] The power mechanism includes an active rod 8, the end of the active rod 8 is fixedly connected to the end of the movable rod 7, a slider 9 is slidingly provided inside the active rod 8, the upper end of the slider 9 is rotatably connected to a rotating block 10, the upper end of the rotating block 10 is fixedly installed with a first telescopic member 11, the upper end of the first telescopic member 11 is fixedly connected to the side of the workbench 1, and the first telescopic member 11 is started to drive the rotating block 10 to move up and down, and the up and down movement of the rotating block 10 can drive the slider 9 to move up and down, and the up and down movement of the slider 9 can slide inside the active rod 8 and drive the active rod 8 and the movable rod 7 to rotate around the middle of the movable rod 7.

[0019] The first movable rod 2, the connecting rod 4, the second movable rod 5, the connecting rod 6, the movable rod 7, the active rod 8 and the first telescopic member 11 are all located in the same vertical plane. Figure 2From the sectional view, when the first telescopic member 11 starts to drive the active rod 8 and the movable rod 7 to rotate counterclockwise around the middle of the movable rod 7, the left end of the movable rod 7 will drive the connecting rod 4 to move downward, and the downward movement of the connecting rod 4 will drive the left end of the first movable rod 2 to move downward, and the downward movement of the left end of the first movable rod 2 will drive the first clamping block 21 to move downward, and the right end of the movable rod 7 will drive the connecting rod 6 to move upward, and the upward movement of the connecting rod 6 will drive the right end of the second movable rod 5 to move upward, and the upward movement of the right end of the second movable rod 5 will drive the second clamping block 51 to move upward, and the first clamping block 21 and the second clamping block 51 are close to each other to clamp the workpiece, and the anti-slip pad 3 can increase the clamping force on the workpiece.

[0020] A supporting mechanism is fixedly installed on the upper surface of the workbench 1, and the supporting mechanism includes a second telescopic member 12. The lower end of the second telescopic member 12 is fixedly connected to the surface of the workbench 1, and a support 13 is fixedly installed on the upper end. When the second telescopic member 12 is activated, it can drive the support 13 to move up and down to adjust its height. The upper end of the support 13 can support the end of the workpiece away from the clamping assembly to prevent the workpiece from shifting during the gear milling process.

[0021] Working principle: During use of the milling gear processing fixture of the steering rack, start the second telescopic member 12 to adjust the height of the support 13 to the required height, place one end of the workpiece on the support 13 and the other end on the second clamping block 51, start the first telescopic member 11 to drive the rotating block 10 to move downward, and the rotating block 10 will drive the active rod 8 to move downward through the slider 9. While the active rod 8 moves, it drives the movable rod 7 to rotate counterclockwise. The counterclockwise rotation of the movable rod 7 will drive the connecting rod 4 to move downward and the connecting rod 6 to move upward. The downward movement of the connecting rod 4 will drive the first clamping block 21 to move downward through the first movable rod 2, and the upward movement of the connecting rod 6 will drive the second clamping block 51 to move upward through the second movable rod 5. The first clamping block 21 and the second clamping block 51 are close to each other to clamp the workpiece. After clamping and fixing, the workpiece is in a horizontal position and on the middle surface of the workbench. When the clamped workpiece is milled by external milling equipment, the workpiece is not easy to deviate or rotate, and has high stability.

[0022] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A milling fixture for a steering rack, comprising a workbench (1), characterized in that: The side of the workbench (1) is rotatably mounted with a first movable rod (2), the end of the first movable rod (2) is rotatably mounted with a connecting rod (4), the end of the connecting rod (4) away from the first movable rod (2) is rotatably connected to a movable rod (7), the middle part of the movable rod (7) is rotatably connected to the side of the workbench (1), the end of the movable rod (7) away from the connecting rod (4) is rotatably mounted with a connecting rod (6), the end of the connecting rod (6) away from the movable rod (7) is rotatably mounted with a second movable rod (5), the end of the second movable rod (5) away from the connecting rod (6) is rotatably connected to the side of the workbench (1), a power mechanism is fixedly mounted on the outer side of the end of the movable rod (7) connected to the connecting rod (4), and a support mechanism is fixedly mounted on the upper surface of the workbench (1); A first clamping block (21) and a second clamping block (51) are respectively fixedly mounted on surfaces of the first movable rod (2) and the second movable rod (5) that are close to each other.

2. The milling fixture for the steering rack according to claim 1, characterized in that: The power mechanism comprises an active rod (8), the end of the active rod (8) is fixedly connected to the end of the movable rod (7), a slider (9) is slidably provided inside the active rod (8), the upper end of the slider (9) is rotatably connected to a rotating block (10), the upper end of the rotating block (10) is fixedly mounted with a first telescopic member (11), and the upper end of the first telescopic member (11) is fixedly connected to the side of the workbench (1).

3. The milling fixture for the steering rack according to claim 2, characterized in that: The first movable rod (2), the connecting rod (4), the second movable rod (5), the connecting rod (6), the movable rod (7), the active rod (8), and the first telescopic member (11) are all located in the same vertical plane.

4. The milling fixture for the steering rack according to claim 1, characterized in that: The surfaces of the first clamping block (21) and the second clamping block (51) that are close to each other are arc-shaped and are fixedly mounted with anti-slip pads (3).

5. The milling fixture for the steering rack according to claim 1, characterized in that: The supporting mechanism comprises a second telescopic member (12), the lower end of the second telescopic member (12) is fixedly connected to the surface of the workbench (1), and the upper end is fixedly mounted with a support (13).

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