Groove milling tool for gear shaft key groove machining

Abstract

The utility model relates to the technical field of gear shaft key groove production and machining, and discloses a groove milling tool for gear shaft key groove machining, which comprises a left supporting seat, the right side of the left supporting seat is fixedly connected with a right supporting seat through a bolt, and a sliding block is installed in a groove of the right supporting seat in a sliding mode. According to the groove milling tool for gear shaft key groove machining, when a gear shaft is clamped, the hexagonal rotating disc is rotated so that the hexagonal rotating disc can drive the threaded column to rotate through the clamping plate, at the moment, the V-shaped block can move in the direction of the gear shaft so that the gear shaft can be clamped, and then the gear shaft can be clamped; during clamping, an extrusion column is extruded by the outer wall of the gear shaft to drive a clamping plate to be separated from a groove of a hexagonal turntable, so that the hexagonal turntable is rotated to idle on a threaded column, and the situation that the gear shaft is damaged due to excessive rotation of the threaded column can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gear shaft keyway production and processing, in particular to a milling groove tooling for gear shaft keyway processing. Background Technique

[0002] In order to ensure the water passage ability of amphibious special vehicles, it is usually necessary to install wave guards on amphibious special vehicles. In order to facilitate the adjustment of the deployment or retraction of the wave guard, a driving device is usually required. However, limited by the installation scenario of the wave guard, the distance between the two ends of the keyway on the gear shaft of the wave guard driver is relatively close to the end face edge. At present, the four-axis clamping and machining method is usually used for milling the keyway of the gear shaft. When machining, a chuck needs to be left, which requires high equipment requirements and also causes waste of raw materials.

[0003] According to a disclosed gear shaft keyway milling tooling (Publication No.: CN219725377U), in the above application, the second clamping member is moved to the keyway position, the tightening bolt is rotated to make the first clamping member and the second clamping member clamp the gear shaft, and then the keyway machining is carried out. After the machining is completed, the tightening bolt is loosened, the second clamping member is moved to both sides, and the gear shaft workpiece is taken off to complete the milling groove machining.

[0004] In the above, by rotating the tightening bolt, the first clamping member and the second clamping member clamp the gear shaft, so that a certain length of chuck can be avoided and it can be clamped. However, during the clamping process, the outer wall of the gear shaft may be scratched by the V-shaped block due to excessive rotation of the bolt, thus affecting the accuracy of the gear shaft. Content of the Utility Model

[0005] The purpose of the utility model is to provide a milling groove tooling for gear shaft keyway processing to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A milling groove tooling for gear shaft keyway processing, including a left support seat, the right side of the left support seat is fixedly connected by bolts to a right support seat, a slider is slidably installed in the groove of the right support seat, a threaded column is threadedly connected to the hollow part of the slider, a V-shaped block is arranged on the left side of the slider, and an anti-scratching mechanism is arranged inside the threaded column. The anti-scratching mechanism includes:

[0007] An extrusion column, the outer wall of the extrusion column penetrates through the inside of the threaded column, and the penetration part is slidably connected, and a clamping plate is fixedly installed on the front surface of the extrusion column;

[0008] A return spring, the back surface of the return spring is fixedly installed on the front surface of the threaded column, which can reset the extrusion rod when the extrusion column is not extruded, and at the same time reset the clamping plate into the groove of the hexagonal turntable. The end of the return spring away from the threaded column is fixedly installed on the back surface of the clamping plate.

[0009] Preferably, a hexagonal turntable is rotatably mounted on the front side of the threaded column, a turn rod is rotatably mounted in the groove of the hexagonal turntable, and a torsion spring is fixedly mounted on the outer wall of the turn rod, which can reset the turn rod and the extrusion plate after the extrusion plate is squeezed.

[0010] Preferably, one end of the torsion spring away from the rotating rod is fixedly mounted on the inner wall of the hexagonal rotating disk groove, and an extrusion plate is fixedly mounted on the outer wall of the rotating rod.

[0011] Preferably, a rotation groove is provided on the top of the sliding block to facilitate the rotation and lifting of the telescopic rod, and the telescopic rod is hinged on the inner wall of the rotation groove.

[0012] Preferably, a tension spring is fixedly installed inside the telescopic rod, which can provide a guide for the V-shaped block when the pulling column is inserted into the pulling groove and the threaded column is loosened, and can pull the V-shaped block to reset. A pulling column is fixedly installed at the through hole of the telescopic rod, and a pulling groove is opened on the top of the V-shaped block.

[0013] Preferably, the anti-pinch mechanism is provided with two groups, and is symmetrically distributed at the front and rear ends of the right support seat with respect to the central symmetry axis of the front side of the right support seat, so that both groups of threaded columns have the function of preventing pinching.

[0014] Compared with the prior art, the utility model provides a milling tool for machining keyways of gear shafts, which has the following beneficial effects:

[0015] 1. The slot milling tool used for keyway processing of gear shaft, when clamping the gear shaft, rotates the hexagonal turntable to drive the threaded column to rotate through the clamping plate. At this time, the V-block will move toward the gear shaft to clamp it. When clamping, the extrusion column will be squeezed by the outer wall of the gear shaft, so that it drives the clamping plate out of the groove of the hexagonal turntable. In this way, when the hexagonal turntable is rotated, it will idle on the threaded column, which can prevent the threaded column from rotating excessively and causing the gear shaft to be clamped.

[0016] 2. The milling tool used for gear shaft keyway processing, when the V-block needs to be replaced, the pulling column is taken out from the notch of the pulling groove by pulling the telescopic rod, and then the V-block is taken out from the extrusion column, so that the V-block can be replaced, so that the V-block with better clamping effect on the gear shaft can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the utility model;

[0018] Figure 2 This is a partial half-section structural schematic diagram of the anti-pinch mechanism of the utility model;

[0019] Figure 3 Structural schematic diagram of the anti-pinch mechanism of the present utility model;

[0020] Figure 4 Partial sectional structural schematic diagram of the anti-pinch mechanism of the present utility model;

[0021] Figure 5 For the present utility model Figure 2 Enlarged structural schematic diagram at position A in;

[0022] Figure 6 For the present utility model Figure 4 Enlarged structural schematic diagram at position B in.

[0023] In the figure: 1, left support seat; 2, right support seat; 3, slider; 4, threaded column; 5, V-shaped block; 6, anti-pinch mechanism; 61, extrusion column; 62, clamping plate; 63, return spring; 64, hexagonal turntable; 65, rotating rod; 66, torsion spring; 67, extrusion plate; 68, rotating groove; 69, telescopic rod; 610, tension spring; 611, pulling column; 612, pulling groove. Specific implementation manner

[0024] As Figures 1-6 shown, the present utility model provides a technical solution: a milling groove tooling for machining the keyway of a gear shaft, including a left support seat 1, the right side of the left support seat 1 is fixedly connected to a right support seat 2 by bolts, a slider 3 is slidably installed in the groove of the right support seat 2, a threaded column 4 is threadedly connected to the hollow part of the slider 3, a V-shaped block 5 is arranged on the left side of the slider 3, an anti-pinch mechanism 6 is arranged inside the threaded column 4, there are two groups of anti-pinch mechanisms 6, and they are symmetrically distributed about the central axis of the front surface of the right support seat 2, and are symmetrically distributed at the front and rear ends of the right support seat 2.

[0025] Specifically, the pinch prevention mechanism 6 includes: a squeeze column 61, a clamping plate 62, a return spring 63, a hexagonal turntable 64, a rotating rod 65, a torsion spring 66, a squeeze plate 67, a rotating groove 68, a telescopic rod 69, a tension spring 610, a pulling column 611, and a pulling groove 612. The outer wall of the squeeze column 61 penetrates through the inside of the threaded column 4, and the penetration part is slidably connected. A clamping plate 62 is fixedly installed on the front surface of the squeeze column 61. When clamping the gear shaft, by rotating the hexagonal turntable 64, it drives the clamping plate 62 to rotate. At this time, the clamping plate 62 drives the squeeze column 61 to rotate. When the squeeze column 61 rotates, it drives the threaded column 4 to screw into the slider 3. At the same time, the extrusion V-block 5 moves towards the gear shaft to clamp it. At this time, the pulling column 611 is clamped in the pulling groove 612. The telescopic rod 69 will give a guiding force to the V-block 5 at this time, so that it can only move towards the gear shaft. There is a return spring 63. The back surface of the return spring 63 is fixedly installed on the front surface of the threaded column 4, and the end of the return spring 63 away from the threaded column 4 is fixedly installed on the back surface of the clamping plate 62. A hexagonal turntable 64 is rotatably installed on the front surface of the threaded column 4. A rotating rod 65 is rotatably installed in the groove of the hexagonal turntable 64. A torsion spring 66 is fixedly installed on the outer wall of the rotating rod 65. The end of the torsion spring 66 away from the rotating rod 65 is fixedly installed on the inner wall of the groove of the hexagonal turntable 64. A squeeze plate 67 is fixedly installed on the outer wall of the rotating rod 65. When the squeeze column 61 is squeezed, when rotating the hexagonal turntable 64 again, it will idle on the threaded column 4, and when rotating, it will drive the rotating rod 65 and the squeeze plate 67 to rotate. At this time, the squeeze plate 67 may be squeezed by the outer wall of the clamping plate 62, driving the rotating rod 65 to rotate, and the torsion spring 66 twists. After being squeezed, the torsion spring 66 will reset it. On the contrary, when rotating the hexagonal turntable 64 in the reverse direction, the clamping plate 62 will squeeze the squeeze plate 67. At this time, the other side of the squeeze plate 67 is stuck by the groove of the hexagonal turntable 64, so it cannot rotate in the reverse direction. At this time, when the hexagonal turntable 64 rotates, it can make the clamping plate 62 rotate, so that the squeeze column 61 drives the threaded column 4 to unscrew from the slider 3. When unscrewing, the restoring force of the return spring 63 will reset the clamping plate 62 to make the extrusion reset. In this way, after the V-block 5 is clamped, the hexagonal turntable 64 will idle, which can prevent the threaded column 4 from rotating excessively and causing the gear shaft to be pinched. A rotating groove 68 is opened at the top of the slider 3. The telescopic rod 69 is hinged on the inner wall of the rotating groove 68. A tension spring 610 is fixedly installed inside the telescopic rod 69. When the V-block 5 moves, it will drive the telescopic rod 69 to stretch, and the tension spring 610 stretches. When clamping, the squeeze column 61 will be squeezed by the outer wall of the gear shaft, driving the clamping plate 62 to disengage from the groove of the hexagonal turntable 64, and the return spring 63 stretches. A pulling column 611 is fixedly installed at the through hole of the telescopic rod 69. A pulling groove 612 is opened at the top of the V-block 5. When the V-block 5 needs to be replaced, by pulling the telescopic rod 69, at this time the tension spring 610 stretches, so that the pulling column 611 is taken out from the notch of the pulling groove 612, and then the V-block 5 is taken out from the squeeze column 61.In this way, the V-block 5 can be replaced, so that a V-block 5 with a better clamping effect on the gear shaft can be replaced.

[0026] Working principle: When clamping the gear shaft, by rotating the hexagonal turntable 64, it drives the clamping plate 62 to rotate. At this time, the clamping plate 62 drives the extrusion column 61 to rotate. When the extrusion column 61 rotates, it drives the threaded column 4 to screw into the slider 3. At the same time, the extrusion V-block 5 moves towards the gear shaft to clamp it. At this time, the pulling column 611 is clamped in the pulling groove 612. The telescopic rod 69 will give a guide to the V-block 5 at this time, so that it can only move towards the gear shaft. When the V-block 5 moves, it will drive the telescopic rod 69 to stretch, and the tension spring 610 stretches. When clamping, the extrusion column 61 will be extruded by the outer wall of the gear shaft, causing it to drive the clamping plate 62 to disengage from the groove of the hexagonal turntable 64, and the return spring 63 stretches. In this way, when rotating the hexagonal turntable 64, it will idle on the threaded column 4, and when rotating, it will drive the rotating rod 65 and the extrusion plate 67 to rotate. At this time, the extrusion plate 67 may be extruded by the outer wall of the clamping plate 62, causing it to drive the rotating rod 65 to rotate, and the torsion spring 66 twists. After extrusion, the torsion spring 66 will reset it. On the contrary, when reversing the hexagonal turntable 64, the clamping plate 62 will extrude the extrusion plate 67. At this time, the other side of the extrusion plate 67 is stuck by the groove of the hexagonal turntable 64, so it cannot rotate in the reverse direction. At this time, when the hexagonal turntable 64 rotates, it can make the clamping plate 62 rotate, so that the extrusion column 61 drives the threaded column 4 to loosen from the slider 3. When loosening, the restoring force of the return spring 63 will reset the clamping plate 62 to make the extrusion reset. In this way, after the V-block 5 is clamped, the hexagonal turntable 64 will idle, which can prevent the threaded column 4 from rotating excessively and causing the gear shaft to be damaged.

[0027] When the V-block 5 needs to be replaced, by pulling the telescopic rod 69, the tension spring 610 stretches at this time, so that the pulling column 611 is taken out from the gap of the pulling groove 612, and then the V-block 5 is taken out from the extrusion column 61. In this way, the V-block 5 can be replaced, so that a V-block 5 with a better clamping effect on the gear shaft can be replaced.

[0028] The above text generally describes the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A milling tool for machining a keyway of a gear shaft, comprising a left support seat (1), characterized in that: The right side of the left support seat (1) is fixedly connected to the right support seat (2) by bolts, a slider (3) is slidably installed in the groove of the right support seat (2), a threaded column (4) is threadedly connected to the hollow part of the slider (3), a V-shaped block (5) is arranged on the left side of the slider (3), and an anti-pinch mechanism (6) is arranged inside the threaded column (4), and the anti-pinch mechanism (6) comprises: An extrusion column (61), wherein the outer wall of the extrusion column (61) penetrates the interior of the threaded column (4) and is slidably connected at the penetration point, and a clamping plate (62) is fixedly mounted on the front side of the extrusion column (61); A return spring (63), the back side of which is fixedly mounted on the front side of the threaded column (4), and one end of which is away from the threaded column (4) is fixedly mounted on the back side of the clamping plate (62).

2. A slot milling tool for machining a keyway of a gear shaft according to claim 1, characterized in that: A hexagonal turntable (64) is rotatably mounted on the front side of the threaded column (4), a rotating rod (65) is rotatably mounted in the groove of the hexagonal turntable (64), and a torsion spring (66) is fixedly mounted on the outer wall of the rotating rod (65).

3. A slot milling tool for machining a keyway of a gear shaft according to claim 2, characterized in that: One end of the torsion spring (66) away from the rotating rod (65) is fixedly mounted on the inner wall of the groove of the hexagonal rotating disk (64), and an extrusion plate (67) is fixedly mounted on the outer wall of the rotating rod (65).

4. A slot milling tool for machining a keyway of a gear shaft according to claim 3, characterized in that: A rotation groove (68) is provided on the top of the sliding block (3), and a telescopic rod (69) is hingedly connected to the inner wall of the rotation groove (68).

5. The milling tool for machining a keyway of a gear shaft according to claim 4, characterized in that: A tension spring (610) is fixedly installed inside the telescopic rod (69), a pulling column (611) is fixedly installed at the through hole of the telescopic rod (69), and a pulling groove (612) is opened on the top of the V-shaped block (5).

6. The milling tool for machining a keyway of a gear shaft according to claim 1, characterized in that: The anti-pinch mechanism (6) is provided in two groups and is symmetrically distributed at the front and rear ends of the right support seat (2) with respect to the central symmetry axis of the front side of the right support seat (2).

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