Hot spinning mandrel-free spinning machine

Abstract

The utility model discloses a hot spinning mandrel-free spinning machine. The hot spinning mandrel-free spinning machine comprises a main shaft driving mechanism, a rotary cutter feeding mechanism and a back wheel feeding mechanism, the main shaft driving mechanism is used for placing a spinning workpiece and driving the spinning workpiece to rotate; the rotary cutter feeding mechanism comprises a Z-axis movement mechanism, an X-axis movement mechanism, a cutter holder and a rotary cutter; the Z-axis movement mechanism and the X-axis movement mechanism comprise linear rails and control the tool apron to linearly move in the two directions, and the rotary tool is installed on the tool apron and used for spinning on the outer side of a spinning workpiece. The back wheel feeding mechanism comprises a driving mechanism and a back wheel, the back wheel feeding mechanism and the rotary cutter feeding mechanism are correspondingly arranged, the driving mechanism is used for controlling positioning of the back wheel, and the back wheel is used for spinning on the inner side of the spinning workpiece. According to the spinning machine, the spinning function can be achieved without using a mold, the spinning quality is improved, the manufacturing and maintenance cost of the mold is reduced, and therefore the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of aluminum alloy wheel hub processing, in particular to a hot spinning coreless die spinning machine. Background Art

[0002] With the rapid development of lightweighting in the automotive industry, traditional steel wheels are being replaced by aluminum alloy wheels. Currently, the production technology for mid- and high-end wheels uses contoured molds as spin-forming backings. Due to the wide variety of wheel types and specifications, each wheel requires a single mold, increasing mold design and manufacturing costs. The need to replace molds when producing wheels of different specifications increases labor costs and reduces production capacity. Due to the short replacement cycle for wheel hubs, a large number of supporting molds are left unused, requiring scrapping, remanufacturing, and recycling, resulting in increased disposal costs and wasted resources.

[0003] In the current international environment, raw material prices and labor costs are rising rapidly, especially for alloy materials. This has forced companies to seek new production technologies to reduce costs and increase profitability. Therefore, a hot-spinning coreless die spinning machine is particularly important. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing hot spinning processes and provide a hot spinning coreless die spinning machine. This spinning machine can achieve the spinning function without the use of a die, improves the spinning quality, reduces the manufacturing and maintenance costs of the die, thereby reducing production costs and improving production efficiency.

[0005] To achieve this goal, the technical solution is implemented as follows:

[0006] The invention discloses a hot spinning coreless die spinning machine. The hot spinning coreless die spinning machine body adopts a vertical structure and mainly includes a main shaft driving mechanism, a rotary cutter feeding mechanism, a back wheel feeding mechanism and the like.

[0007] The spindle drive mechanism is used to place the spinning workpiece and drive the spinning workpiece to rotate;

[0008] The rotary cutter feed mechanism includes a Z-axis motion mechanism, an X-axis motion mechanism, a tool holder, and a rotary cutter. The Z-axis motion mechanism and the X-axis motion mechanism include linear rails that control the linear motion of the tool holder in two directions. The rotary cutter is mounted on the tool holder and is used to spin the outside of the workpiece. The machining trajectory is output through CNC programming.

[0009] The back wheel feeding mechanism includes a driving mechanism and a back wheel. The back wheel feeding mechanism is arranged correspondingly to the rotary cutter feeding mechanism. The driving mechanism is used to control the positioning of the back wheel, and the back wheel is used to perform spinning on the inner side of the spinning workpiece.

[0010] Furthermore, the back wheel is driven by a servo-hydraulic control system consisting of a servo cylinder and connecting rod. This system is easy to operate and highly flexible, eliminating the need for manual changes and improving production efficiency. The integration of the equipment with a robotic loading and unloading system provides excellent human-machine interaction. Part loading is convenient, the entire process is CNC-automated, and single-step positioning of the spun workpiece ensures high processing accuracy and improves product quality.

[0011] Furthermore, in the driving mechanism of the back wheel feeding mechanism, a buffer structure is provided at the end of the servo cylinder to reduce the impact force.

[0012] Furthermore, it also includes a tail top lifting mechanism, which includes a guide rod and a hydraulic cylinder; the hydraulic cylinder of the tail top lifting mechanism is connected to the back wheel feed mechanism to control the lifting and lowering of the back wheel feed mechanism in the Z-axis direction.

[0013] Furthermore, a clamping mechanism is provided on the spindle driving mechanism, and the clamping mechanism is used to fix the spinning workpiece.

[0014] As another preferred embodiment, the main spindle drive mechanism is not provided with a clamping mechanism, and the spinning workpiece is pressed onto the main spindle drive mechanism by a second tail top lifting mechanism, which includes a guide rod and a hydraulic cylinder.

[0015] Furthermore, the rotary cutter feeding mechanism and the back wheel feeding mechanism are respectively provided with two or three groups.

[0016] Furthermore, it also includes a machine base, lubrication system, hydraulic system, and electronic control. The main spindle drive mechanism is installed on the machine base, and the hydraulic system provides power to the back wheel feed mechanism, rotary cutter feed mechanism, and tail top lifting mechanism, so the speed and position can be controlled with high precision. The lubrication system provides lubrication for the main spindle drive mechanism, rotary cutter feed mechanism, and back wheel feed mechanism.

[0017] Furthermore, the main shaft is driven by a servo motor, and the speed is controllable and positioning is possible.

[0018] Furthermore, the hot-spinning coreless spinning machine includes a pneumatic system. The machine comprises a housing, in which the spindle drive mechanism, the spinner feed mechanism, and the back wheel feed mechanism are all housed. A pneumatic door is provided on the housing, and the pneumatic system provides energy for the door. When the door is open, the spun workpiece can enter and exit the housing.

[0019] Furthermore, it also includes a rotary cutter cooling device, which is used to spray liquid onto the rotary cutter to maintain lubrication between the rotary cutter and the spun workpiece, and to reduce the temperature between the rotary cutter and the spun workpiece.

[0020] This utility model has the following advantages: It features a vertical split design, making it easy to maintain. The equipment utilizes a semi-enclosed split structure, making it easy to assemble. The spindle drive mechanism, rotary cutter feed mechanism, back wheel feed mechanism, and tail lift mechanism are all independently controlled, with compensation capabilities, offering flexible programming and convenient operation. The system is equipped with multiple fault detection alarms for quick and easy troubleshooting.

[0021] The utility model adopts a coreless die spinning process, which can improve the efficiency and cost by 10% and save 8% of energy consumption. It effectively solves the shortcomings of similar processing equipment at home and abroad, simplifies the process flow and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a hot spinning coreless mold spinning machine according to an embodiment of the present invention.

[0023] Figure 2 This is a structural diagram of the rotary cutter feeding mechanism of a hot spinning coreless die spinning machine according to an embodiment of the present invention.

[0024] Figure 3 This is a structural diagram of the back wheel feeding mechanism of the hot spinning coreless mold spinning machine according to an embodiment of the present utility model.

[0025] Figure 4 This is a structural diagram of the tail top lifting mechanism of the hot spinning coreless mold spinning machine according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further analyzed below in conjunction with the accompanying drawings and descriptions.

[0027] Example 1: The hot spinning coreless die spinning machine of this embodiment adopts a vertical structure, as shown in the attached Figure 1 As shown in the figure, the hot spinning coreless die spinning machine consists of a machine base 1, a spindle drive mechanism 2, a rotary cutter feed mechanism 3, a tail lift mechanism 4, a back wheel feed mechanism 5, a hydraulic system 6, a lubrication system 7, a pneumatic system 8, and an electronic control system 9. The drive system combines electric servo, hydraulic servo, and pneumatic technologies.

[0028] The hydraulic system 6 provides power for the back wheel feed mechanism 5, the rotary cutter feed mechanism 3, and the tail top lifting mechanism 4, so the speed and position are controllable with high precision; the lubrication system 7 provides lubrication for the main shaft drive mechanism 2, the rotary cutter feed mechanism 3, and the back wheel feed mechanism 5.

[0029] The spindle drive mechanism is used to place the spinning workpiece and drive the spinning workpiece to rotate; the spindle is driven by a servo motor with controllable speed and positioning.

[0030] As attached Figure 2As shown, the rotary cutter feed mechanism includes a Z-axis motion mechanism 10, an X-axis motion mechanism 11, a tool holder 12, and a rotary cutter 13. The Z-axis motion mechanism 10 and the X-axis motion mechanism 11 include linear rails that control the linear motion of the tool holder 12 in two directions. The rotary cutter 13 is mounted on the tool holder 12 and is used to spin the outer side of the spun workpiece. The machining trajectory is output through CNC programming.

[0031] As attached Figure 3 As shown, the back wheel feeding mechanism 5 is composed of a servo cylinder 14, a back wheel assembly 15 and the like. The Z-axis direction of the back wheel feeding mechanism 5 is completed by the tail top lifting mechanism ( Figure 4 ), radial feed is performed by a servo cylinder, and the machining trajectory is output through CNC programming. The back wheel feed mechanism is set corresponding to the spinning cutter feed mechanism. The drive mechanism is used to control the positioning of the back wheel, which is used to spin the inner side of the spun workpiece.

[0032] As attached Figure 4 As shown, the tail top lifting structure is composed of a guide rod 16, a servo-controlled hydraulic cylinder 17, a support base 18 and other components. The back wheel feeding process is achieved by lifting.

[0033] The back wheel is radially positioned by a servo-hydraulic control system consisting of a servo cylinder 14 and connecting rods. This system offers ease of operation, high flexibility, and eliminates the need for manual replacement, improving production efficiency. The integrated application of the equipment and robotic loading and unloading system provides excellent human-machine interaction. Part loading is convenient, and the entire process is CNC-automated. Single-step positioning of the spinning workpiece ensures high processing accuracy and improves product quality. A buffer structure is installed at the end of the servo cylinder 14 to reduce impact forces.

[0034] The rotary cutter feeding mechanism and the back wheel feeding mechanism are respectively provided with two groups.

[0035] The hot spinning coreless die spinning machine includes a housing, in which the spindle drive mechanism 2, the spinner feed mechanism 3, and the back wheel feed mechanism 5 are all arranged. The housing is provided with a pneumatic door, which is powered by a pneumatic system 8. When the pneumatic door is opened, the spinning workpiece can enter and exit the housing.

[0036] It also includes a rotary cutter cooling device, which is used to spray water on the rotary cutter to maintain lubrication between the rotary cutter and the spinning workpiece, and to reduce the temperature between the rotary cutter and the spinning workpiece to prevent the cutter from sticking.

[0037] Example 2: Same as Example 1, but the tail top lifting mechanism 4 is removed and a second tail top lifting mechanism is used to press the spinning workpiece onto the spindle drive mechanism 2. The second tail top lifting mechanism includes a guide rod and a hydraulic cylinder.

[0038] The rotary cutter feeding mechanism 3 and the back wheel feeding mechanism 5 are respectively provided with three groups, and the adjacent angles between the three groups are 120 degrees.

[0039] The above embodiments are only for illustrating the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A hot spinning coreless die spinning machine, characterized in that: It includes a spindle drive mechanism, a rotary cutter feed mechanism, and a back wheel feed mechanism; The spindle drive mechanism is used to place the spinning workpiece and drive the spinning workpiece to rotate; The rotary cutter feeding mechanism includes a Z-axis motion mechanism, an X-axis motion mechanism, a tool holder, and a rotary cutter; the Z-axis motion mechanism and the X-axis motion mechanism include linear rails to control the linear motion of the tool holder in two directions. The rotary cutter is mounted on the tool holder and is used to spin the outer side of the spun workpiece; The back wheel feeding mechanism includes a driving mechanism and a back wheel. The back wheel feeding mechanism is arranged correspondingly to the rotary cutter feeding mechanism. The driving mechanism is used to control the positioning of the back wheel, and the back wheel is used to perform spinning on the inner side of the spinning workpiece.

2. The hot spinning coreless die spinning machine according to claim 1, characterized in that: The rear wheel is driven by a servo hydraulic control system, which includes a servo cylinder and a connecting rod.

3. The hot spinning coreless die spinning machine according to claim 2, characterized in that: In the driving mechanism of the back wheel feed mechanism, a buffer structure is provided at the end of the servo cylinder to reduce the impact force.

4. The hot spinning coreless die spinning machine according to claim 2, characterized in that: It also includes a tail top lifting mechanism, which includes a guide rod and a hydraulic cylinder; the hydraulic cylinder of the tail top lifting mechanism is connected to the back wheel feed mechanism to control the lifting and lowering of the back wheel feed mechanism in the Z-axis direction.

5. The hot spinning coreless die spinning machine according to claim 1, characterized in that: A clamping mechanism is provided on the spindle driving mechanism, and the clamping mechanism is used to fix the spinning workpiece.

6. The hot spinning coreless die spinning machine according to any one of claims 1 to 3, characterized in that: The second tail top lifting mechanism is used to press the spinning workpiece onto the main shaft driving mechanism. The second tail top lifting mechanism includes a guide rod and a hydraulic cylinder.

7. The hot spinning coreless die spinning machine according to any one of claims 1 to 3, characterized in that: The rotary cutter feeding mechanism and the back wheel feeding mechanism are respectively provided with two or three groups.

8. The hot spinning coreless die spinning machine according to any one of claims 1 to 5, characterized in that: It also includes a machine base, a lubrication system, and a hydraulic system; the main shaft drive mechanism is arranged on the machine base; the hydraulic system provides power for the back wheel feed mechanism, the rotary cutter feed mechanism, and the tail top lifting mechanism; the lubrication system provides lubrication for the main shaft drive mechanism, the rotary cutter feed mechanism, and the back wheel feed mechanism.

9. The hot spinning coreless die spinning machine according to any one of claims 1 to 5, characterized in that: It also includes a pneumatic system. The hot spinning coreless mold spinning machine includes a box body. The main shaft drive mechanism, the rotary cutter feed mechanism, and the back wheel feed mechanism are all arranged in the box body. A pneumatic door is provided on the box body, and the pneumatic system provides energy for the pneumatic door.

10. The hot spinning coreless die spinning machine according to any one of claims 1 to 5, characterized in that: The invention also includes a rotary cutter cooling device, which is used for spraying liquid onto the rotary cutter to maintain lubrication between the rotary cutter and the spun workpiece, and to reduce the temperature between the rotary cutter and the spun workpiece.

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