Tool capable of achieving simultaneous machining of hub mounting holes in two ends of drive axle of electric forklift

Abstract

The utility model discloses a tool capable of simultaneously machining hub mounting holes in two ends of an electric forklift drive axle, which comprises a machine tool base and a tool turret for drilling holes in the electric forklift drive axle, the tool turret is arranged on a third sliding plate, and the third sliding plate is controlled by a third electric cylinder to move on the mounting turret, so that the tool turret moves in the Z direction; the mounting tower is arranged on the second sliding plate and is driven by a second electric cylinder, so that the tool turret moves on the Y axis; the second sliding plate is arranged on the first sliding plate in a sliding mode, the first sliding plate is arranged on the machine tool base in a sliding mode, the first electric cylinder drives the first sliding plate to move, movement of the tool turret in the X direction is achieved, the tool further comprises a clamping device used for the drive axle, and the clamping device is located on the side face of the machine tool base and is parallel to the X direction of movement of the tool turret. The clamping device comprises a supporting plate capable of moving up and down and a pressure assembly used for clamping the two ends of the drive axle, and the pressure assembly comprises a downward pressing type clamping arm and a supporting frame which are controlled through an air cylinder.

Description

Technical Field

[0001] This utility model pertains to the machining fixtures for drive axles, specifically relating to a fixture that can simultaneously machine the wheel hub mounting holes at both ends of the drive axle of an electric forklift. Background Technology

[0002] The drive axle is a mechanism located at the end of the transmission system that changes the speed and torque from the transmission and transmits them to the drive wheels. A drive axle typically consists of a final drive, differential, wheel drivetrain, and drive axle housing; steering drive axles also include constant velocity joints. Furthermore, the drive axle must withstand vertical, longitudinal, and lateral forces acting between the road surface and the vehicle frame or body, as well as braking torque and reaction forces.

[0003] This utility model is a tooling for machining the drive axle housing of an electric forklift. According to existing technology, we know that there is a spherical structure in the middle of the drive axle, usually a differential assembled in two semicircles. The machining of this product is different from that of bar stock or ordinary cutting and drilling. First, the structure cannot rotate on its own because it is an eccentric structure. Second, for existing CNC machine tools, it is not convenient to place the drive axle directly on the machine tool base inside the CNC machine tool and clamp it on the machining table. Furthermore, due to the characteristics of this mechanism, existing turret machining cannot meet the large stroke requirements. Utility Model Content

[0004] Purpose of the utility model: To address the inconvenience of machining drive axles on existing machine tools, this utility model provides a tooling that can simultaneously machine the hub mounting holes at both ends of the drive axle of an electric forklift.

[0005] Technical Solution: A tooling for simultaneously machining the hub mounting holes at both ends of an electric forklift drive axle includes a machine tool base and a turret for drilling holes in the electric forklift drive axle. The turret is mounted on a third slide plate, which is controlled by a third electric cylinder to move on the mounting turret, thus moving the turret in the Z direction. The mounting turret is mounted on a second slide plate and driven by a second electric cylinder, thus moving the turret in the Y axis. The second slide plate is slidably mounted on a first slide plate, which is slidably mounted on the machine tool base. A first electric cylinder drives the first slide plate to move, thus moving the turret in the X direction.

[0006] The tooling also includes a clamping device for the drive axle, which is located on the side of the machine tool base and parallel to the X direction of the turret movement.

[0007] The clamping device includes a tray that can move up and down and a pressure assembly for clamping both ends of the drive axle. The pressure assembly includes a downward clamping arm controlled by a cylinder and a support frame.

[0008] Furthermore, in the clamping device, the pallet moves up and down via an electric cylinder and a sliding assembly located on the side of the clamping base. The pallet is provided with blocking arms for clamping on both sides of the drive axle. The blocking arms are controlled by a torsion spring or a rotating mechanism, which includes an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0009] Furthermore, the pressing clamping arm is provided with a pressing rod, which abuts against the upper surface of the drive axle.

[0010] Furthermore, in this tooling, the drive mechanism for the first, second, and third electric cylinders of the corresponding slide plates includes a ball screw.

[0011] Furthermore, the edge of the third sliding plate in the Z direction and the mounting tower are provided with a sliding groove and a sliding rail. The sliding rail is the protruding edge of the mounting tower, and the sliding groove is the bent part of the edge of the third sliding plate.

[0012] Furthermore, the structure of the electric cylinder-driven slide plate in this tooling is as follows: the electric cylinder drives the lead screw to rotate, and the other end of the lead screw is equipped with a bearing seat through an end block. The ball slider on the lead screw drives the slide plate to move.

[0013] Furthermore, the clamping device is used to place the drive axle horizontally and parallel to the machine tool base.

[0014] The base in the clamping device includes an integral structure with the machine tool base or a separate structure. The separate structure means that the base is fixed to one side of the machine tool base by bolts, and the base includes adjustable machine feet.

[0015] The tooling includes a double-turret structure, with turrets at both ends of the machine tool base.

[0016] Beneficial effects: Compared with the prior art, the significant effect and substantial feature of this utility model is that it uses a clamping device to fix and clamp the drive bridge, separating it from the machining table of the machine tool. This avoids expanding the turret's stroke to allow drilling operations to reach various positions on the drive bridge. At the same time, based on the split design, the turret is extended and lengthened on the X, Y and Z axes, enabling operation in three-dimensional space and meeting the requirements of drilling and other operations on the drive bridge. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the tooling described in this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping device described in this utility model;

[0019] Figure 3 It is an assembly structure diagram of the skateboard and electric cylinder drive. Detailed Implementation

[0020] To provide a detailed explanation of the technical solution disclosed in this utility model, further details are provided below in conjunction with the accompanying drawings.

[0021] Combination Figure 1-3 As shown, the tooling provided by this utility model is used to process the drive axle 3 of an electric forklift, including a machine tool base 1, with turrets 9 at both ends of the machine tool base 1. Specifically, firstly, this utility model provides a clamping device 2 on one side of the machine tool base (on the same side as the turret). The base of the clamping device 2 can be an integral structure with the machine tool base 1, or the two can be fixed by bolts. For a separate type, the base of the clamping device 2 can be adjusted to a horizontal position by the bottom feet, that is, parallel to the slide rail in the X direction on the machine tool base 1, or it can be set to the same height. A support frame 11 is provided on the clamping device 2, which is used to support both ends of the drive axle 3. Then, the up and down adjustment of the support plate 10 is controlled to support the drive axle 3 from the bottom. The support plate 10 mainly supports the spherical structure in the middle of the drive axle 3, and can also adjust the clamping height of the drive axle 3. After reaching the height, the cylinder controls the downward clamping arm 4 to move downward, that is, the downward pressing rod 401 presses against the upper surface of the drive axle 3. Furthermore, the blocking arms 13 are placed on both sides of the drive axle 3. The blocking arms 13 can be controlled by a torsion spring or a knob mechanism. The torsion spring refers to a spring that is sleeved on an internal rotating shaft, with both ends of the torsion spring fixed, one end of which is fixed to the blocking arm 13. The blocking arm 13 is forced to the side of the drive axle 3 by external force, and its torque can provide a limit. The rotating mechanism 12 includes an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, which rotates the blocking arms 13 to achieve the blocking position on both sides of the drive axle 9.

[0022] The lifting and lowering of the pallet 10 can be controlled by component 14 in conjunction with a drive electric cylinder or pneumatic cylinder, including a telescopic cylinder or ball screw assembly.

[0023] In this invention, the turret 9 can move in the X, Y, and Z directions to allow drilling or cutting at various positions on the surface of the asymmetrical irregular structure of the drive axle 3. Specifically:

[0024] A first slide plate 501 is set on the slide rail of the machine tool base 1. The first slide plate 501 is fixed to the slider, which can be fixed with bolts. The slider drives a rotating shaft to rotate via an electric cylinder or a pneumatic cylinder. The rotating shaft can be a screw, thereby driving the first slide plate 501 to move in the X direction. Further integration... Figure 3The movement of the second slide plate 601 in the Y direction is explained as follows: The Y-direction movement mechanism is based on the first slide plate 501. The second slide plate 601 is fixedly connected to the second slider 603, which moves by rotating a screw 602 driven by a second electric cylinder 6. The other end of the screw 602 is fixed to a through-end block 604 and a bearing 605 located inside it. Similarly, the Z-direction movement mechanism is the same as in the X or Y directions. It should be noted that, in the Z direction, considering the weight and stability of the turret 9, it is assembled by mounting a turret 8 on the second slide plate 601. The third electric cylinder 7 controls the movement of the third slide plate 701. To prevent the turret 9 from falling off, grooves and rails are provided at the edges of the turret 9 and the third slide plate 701. The rails are the raised edges of the mounting turret, and the grooves are the bent edges of the third slide plate.

[0025] Combining the above structure and Figures 1-3 As shown, the tooling of this utility model includes turret structures at both ends of the machine tool base 1, including hydraulic turrets or servo turrets. This utility model addresses the issue of extending the travel of the turret 9 in three-dimensional space, thereby enabling the lengthening of the tool on the turret 9. Figure 1 The extension of the tools on the two turrets 9 is designed to accommodate the machining of deep holes on the drive axle 3.

Claims

1. A tooling fixture capable of simultaneously machining the hub mounting holes at both ends of an electric forklift drive axle, comprising a machine tool base (1) and a turret (9) for drilling holes in the electric forklift drive axle, characterized in that, The turret (9) is mounted on the third slide plate (701), which is controlled by the third electric cylinder (7) to move on the mounting tower (8), thereby enabling the turret (9) to move in the Z direction; the mounting tower (8) is mounted on the second slide plate (601) and is driven by the second electric cylinder (6), thereby enabling the turret (9) to move in the Y axis; the second slide plate (601) is slidably mounted on the first slide plate (501), which is slidably mounted on the machine tool base (1), and the first electric cylinder (5) drives the first slide plate (501) to move, thereby enabling the turret (9) to move in the X direction; The tooling also includes a clamping device (2) for the drive axle (3), the clamping device (2) being located on the side of the machine tool base (1) and parallel to the X direction of the turret (9) movement; The clamping device (2) includes a tray (10) that can move up and down and a pressure assembly for clamping both ends of the drive axle (3). The pressure assembly includes a downward clamping arm (4) controlled by a cylinder and a support frame (11).

2. The tooling according to claim 1, characterized in that, In the clamping device (2), the tray (10) moves up and down through an electric cylinder and a sliding assembly (14) located on the side of the clamping base. The tray (10) is provided with a blocking arm (13) for clamping both sides of the drive bridge (3). The blocking arm (13) is controlled by a torsion spring or a rotating mechanism. The rotating mechanism includes an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

3. The tooling according to claim 1, characterized in that, The pressing clamping arm (4) is provided with a pressing rod (401), which abuts against the upper surface of the drive axle (3).

4. The tooling according to claim 1, characterized in that, In this fixture, the first electric cylinder (5), the second electric cylinder (6), and the third electric cylinder (7) are configured as ball screws for the drive mechanism of the corresponding slide.

5. The tooling according to claim 1, characterized in that, The edge of the third sliding plate (701) in the Z direction and the mounting tower (8) are provided with a slide groove and a slide rail. The slide rail is the protruding edge of the mounting tower (8), and the slide groove is the bent part of the edge of the third sliding plate (701).

6. The tooling according to claim 1 or 4, characterized in that, The structure of the electric cylinder driven slide plate in this tooling is as follows: the electric cylinder drives the lead screw to rotate, and the other end of the lead screw is equipped with a bearing seat through the end block. The ball slider on the lead screw drives the slide plate to move.

7. The tooling according to claim 1, characterized in that, The clamping device (2) is used to place the drive bridge (3) horizontally and parallel to the machine tool base (1).

8. The tooling according to claim 7, characterized in that, The base in the clamping device (2) includes an integral structure with the machine tool base (1) or a separate structure. The separate structure means that the base is fixed to one side of the machine tool base (1) by bolts, and the base includes adjustable machine feet.

9. The tooling according to claim 1, characterized in that, The tooling includes a double turret structure, with turrets (9) at both ends of the machine tool base (1).

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