A spinning machine

Abstract

The utility model discloses a spinning machine, including main pressure lever, pressure disc, clamping material mandrel and pressure mechanism. Pressure disc and clamping material mandrel are used to clamp work piece between both and drive work piece rotation, and pressure mechanism is used to pressurize to work piece to make work piece spinning forming along the pressure disc periphery surface. Pressure disc is connected in the first end of main pressure lever, and the first end of main pressure lever is equipped with ball head, and the ball socket of shape matching ball head is equipped on pressure disc, and ball head is movably inserted into ball socket, and makes main pressure lever and pressure disc form ball hinge. The spinning machine in the application can adapt to the work piece in the process of wheel spinning manufacturing, realize the adhesion between the pressure disc and the work piece, keep good contact, improve the flatness quality of the work piece in the process of wheel spinning, and reduce the increase process and waste cost caused by instability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile wheel manufacturing, especially relates to a spinning machine. BACKGROUND

[0002] Wheel spinning forming is a kind of plastic forming process, by fixing workpiece on a core shaft, then rotating it, and simultaneously applying a continuously changing pressure along the radial direction, so that the workpiece produces plastic deformation, and finally the workpiece is made into the required shape and size. In the process of wheel spinning manufacturing, the workpiece is clamped and fixed between the pressure disc and the clamping core shaft and driven to rotate, and the workpiece is pressed by the pressing mechanism of the spinning machine, so that the workpiece is spun along the outer peripheral surface of the pressure disc. Since the existing pressure disc and main pressure rod are fixedly connected, when the workpiece does not fit well with the pressure disc, the spoke plane will have inconsistent quality problems during wheel spinning forming, resulting in increased subsequent cost, and new tooling process is needed to solve the quality problem. SUMMARY

[0003] The utility model discloses a spinning machine with high workpiece flatness.

[0004] To achieve the above-mentioned purpose, a spinning machine is provided, which comprises a main pressure rod, a pressure disc, a clamping core shaft and a pressing mechanism. The pressure disc and the clamping core shaft are used to clamp the workpiece therebetween and drive the workpiece to rotate. The pressing mechanism is used to press the workpiece to make the workpiece spin along the outer peripheral surface of the pressure disc. The pressure disc is connected to the first end of the main pressure rod. The first end of the main pressure rod is provided with a ball head. The pressure disc is provided with a ball socket matching the shape of the ball head. The ball head is movably inserted into the ball socket, so that the main pressure rod and the pressure disc are ball-hinged.

[0005] Preferably, the pressure disc comprises a fixedly connected forming part and a movable cover. The forming part and the clamping core shaft are oppositely arranged. The movable cover is arranged on the side of the forming part away from the clamping core shaft. The side of the forming part facing the movable cover is provided with a concave spherical surface. The movable cover is provided with a sleeve hole sleeved on the main pressure rod, and the inner circular surface of the sleeve hole is arc-shaped. The concave spherical surface and the sleeve hole form the ball socket.

[0006] Preferably, the movable cover has two halves that are hingedly connected.

[0007] Preferably, the diameter of the ball-shaped structure of the first end of the main pressure rod is greater than the diameter of the main pressure rod.

[0008] Preferably, the second end of the main pressure rod is fixedly connected with a connecting disc.

[0009] Preferably, a reinforcing rib is further arranged between the second end of the main pressure rod and the connecting disc.

[0010] The utility model has the advantages of the following:

[0011] In the utility model, the first end of the main pressing rod is provided with a ball head, the upper portion of the pressing disc is provided with a ball socket matched with the ball head, so that the main pressing rod and the pressing disc are formed into a ball joint. In the process of manufacturing the wheel by spinning, the workpiece can be adaptively matched by the rotatable pressing disc regardless of the posture of the workpiece, the pressing disc and the workpiece are attached to each other, good contact is maintained, the flatness quality of the workpiece is improved in the process of spinning the wheel, and the problems of increasing processes and wasting costs caused by instability are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the spinning machine in the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0013] The embodiments of the utility model will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model. If the specific technology or condition is not specified in the embodiments, the technology or condition described in the literature in the art or according to the product manual is used.

[0014] The utility model will be further described in combination with the drawings and specific embodiments.

[0015] Referring to Figure 1 As a preferred embodiment of the utility model, the embodiment proposes a spinning machine, which comprises a main pressing rod 1, a pressing disc 2, a material clamping mandrel 3 and a pressing mechanism 4. The pressing disc 2 is connected to the first end of the main pressing rod 1, the first end of the main pressing rod 1 is provided with a ball head 11, and the diameter of the ball head 11 at the first end of the main pressing rod 1 is greater than the diameter of the main pressing rod 1. The pressing disc 2 is provided with a ball socket matched with the shape of the ball head 11, the ball head 11 is movably inserted into the ball socket, so that the main pressing rod 1 and the pressing disc 2 are formed into a ball joint. The pressing disc 2 and the material clamping mandrel 3 clamp the workpiece 101 between them and drive the workpiece to rotate, the pressing mechanism 4 presses the workpiece and moves along the length direction of the main pressing rod 1 so as to spin and form the workpiece 101 along the outer peripheral surface of the pressing disc 2.

[0016] To achieve a ball joint between the main pressure rod 1 and the pressure plate 2, the pressure plate 2 includes a fixedly connected forming part 21 and a movable cover 22. The forming part 21 and the clamping mandrel 3 are arranged opposite each other, and the movable cover 22 is located on the side of the forming part 21 away from the clamping mandrel 3. The side of the forming part 21 facing the movable cover 22 has a concave spherical surface 211, and the movable cover 22 has a sleeve hole 221 that fits around the main pressure rod and has an arc-shaped inner surface. The concave spherical surface 211 and the sleeve hole 221 form a ball-and-socket joint. For ease of assembly, the movable cover 22 has two halves that can be joined together (joined in half along the cutting direction shown in the figure). The movable cover 22 can be joined on the main pressure rod 1 and then fixedly connected to the forming part 21 at the first end of the main pressure rod 1 to form the pressure plate 2. Alternatively, the forming part 21 can be joined to the main pressure rod 1 first, and then the two halves of the movable cover 22 can be fixedly connected to the forming part 21 respectively and then joined together to form the pressure plate 2. Of course, in other embodiments, the pressure plate 2 can be directly set as two halves joined together, but this will destroy the integrity of the forming part 21, requiring higher precision joining and increasing the manufacturing cost of the spinning machine.

[0017] During the wheel spinning process, the workpiece 101 is clamped and fixed between the pressure plate 2 and the clamping mandrel 3, and the workpiece 101 is rotated. The pressure applying mechanism 4 of the spinning machine applies pressure to the workpiece 101, causing the workpiece 101 to be spun and formed along the outer circumferential surface of the pressure plate 2. Since the pressure plate 2 and the main pressure rod 1 are ball-jointed, even if the clamping posture of the workpiece 101 is not standard during the wheel spinning process (for example, the workpiece 101 and the clamping mandrel 3 are not completely perpendicular due to wear), the pressure plate 2 can always maintain good contact with the plane of the workpiece 101 through the adaptive ball-joint movement. This can improve the flatness quality of the workpiece 101 and reduce the problems of increased processes and wasted costs caused by its instability.

[0018] The second end of the main pressure rod 1 is fixedly connected to the connecting plate 5. To prevent the main pressure rod 1 from falling off during rotation, a reinforcing rib 6 is provided between the second end of the main pressure rod 1 and the connecting plate 5 for reinforcement and fixation.

[0019] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A spinning machine, characterized in that, The device includes a main pressure rod, a pressure plate, a clamping mandrel, and a pressure applying mechanism. The pressure plate and clamping mandrel are used to clamp the workpiece between them and drive the workpiece to rotate. The pressure applying mechanism is used to apply pressure to the workpiece so that the workpiece is spun and formed along the outer peripheral surface of the pressure plate. The pressure plate is connected to the first end of the main pressure rod. The first end of the main pressure rod is provided with a ball head. The pressure plate is provided with a ball socket with a shape matching the ball head. The ball head can be movably inserted into the ball socket, so that the main pressure rod and the pressure plate form a ball joint.

2. The spinning machine according to claim 1, characterized in that, The pressure plate includes a forming part and a movable cover that are fixedly connected. The forming part and the clamping mandrel are arranged opposite to each other. The movable cover is located on the side of the forming part away from the clamping mandrel. The side of the forming part facing the movable cover has a concave spherical surface. The movable cover has a sleeve hole that is fitted around the main pressure rod and has an arc-shaped inner surface. The concave spherical surface and the sleeve hole form the ball socket.

3. The spinning machine according to claim 2, characterized in that, The movable cover has two halves that fit together.

4. The spinning machine according to claim 2, characterized in that, The diameter of the spherical structure at the first end of the main pressure rod is larger than the diameter of the main pressure rod.

5. The spinning machine according to claim 1, characterized in that, The second end of the main pressure rod is fixedly connected to a connecting plate.

6. The spinning machine according to claim 5, characterized in that, A reinforcing rib is also provided between the second end of the main pressure rod and the connecting plate.

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