Servo press

Abstract

The utility model relates to a kind of servo press, belongs to the technical field of metal pressure processing equipment, including pressure pedestal, the upper end of the pressure pedestal is equipped with stamping support plate, the stamping support plate upper is equipped with the pressure assembly fixedly connected with pressure pedestal. The pressure assembly includes body, the upper part of the body is equipped with crankshaft, the rear end of the upper part of the body is equipped with servo motor, the servo motor is equipped with shaft coupling between crankshaft, the front end of the crankshaft is equipped with connecting rod with crankshaft is inserted and embedded type connection. With the characteristics of simple structure and good running stability. Servo motor is used as power source, crankshaft is directly driven by shaft coupling, and then rotating motion is converted into linear stamping motion by connecting rod.

Description

Technical Field

[0001] This utility model relates to the field of metal pressure processing equipment technology, specifically to a servo press. Background Technology

[0002] Currently, the mainstream presses on the market are mechanical presses and hydraulic presses. They each have their advantages and disadvantages, but also have obvious bottlenecks.

[0003] I. The pain points of traditional mechanical presses (such as crank presses), power and control methods: They are usually driven by ordinary asynchronous motors, which store energy through a flywheel with a large inertia, and then control the stamping action through the engagement and disengagement of clutches and brakes.

[0004] Main limitations: Fixed motion curve: The motion characteristics (speed, displacement) of the slider are uniquely determined by the geometry of the crank-connecting rod mechanism and cannot be adjusted according to process requirements. For example, it cannot achieve the ideal process curve of "rapid descent → slow pressure holding → rapid return".

[0005] Precision is difficult to control: due to the lack of closed-loop control, the positional accuracy and pressure consistency of the slider at the bottom dead center are relatively poor, making it unsuitable for high-precision forming.

[0006] High energy consumption: The motor and flywheel need to run continuously, consuming energy even during non-stamping periods, and the clutch engagement process generates huge energy shocks and waste.

[0007] High noise and vibration: The start and stop of the flywheel and clutch generate huge mechanical shocks and noise.

[0008] Complex adjustment: Adjusting the stamping stroke and speed is very difficult and lacks flexibility.

[0009] II. Pain points of hydraulic presses, power and control methods: High-pressure oil is generated by a hydraulic pump station to drive the piston movement of the hydraulic cylinder.

[0010] Main limitations: Low energy efficiency: Hydraulic systems suffer from throttling and overflow losses, resulting in generally low overall energy efficiency (approximately 30%–50%), and require complex cooling systems.

[0011] Slower speed: The limited flow rate of hydraulic oil results in a stamping speed that is usually lower than that of a mechanical press, affecting the production cycle.

[0012] High maintenance costs: Hydraulic systems have high requirements for oil cleanliness, are prone to leakage, have many pipelines, and are complex and costly to maintain.

[0013] Noise and oil pollution: Hydraulic pump stations are the main source of noise, while oil leaks can pollute the environment. Summary of the Invention

[0014] This invention addresses the shortcomings of existing technologies by providing a servo press with a simple structure and good operational stability. It employs a servo motor as the power source, directly driving the crankshaft via a coupling, and then converts the rotary motion into linear stamping motion via a connecting rod.

[0015] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A servo press includes a pressure base, with a stamping support plate at the upper end of the pressure base. A pressure assembly, fixedly connected to the pressure base, is located above the stamping support plate. The pressure assembly includes a body, with a crankshaft at the upper part of the body and a servo motor at the rear end of the upper part of the body. A coupling is provided between the servo motor and the crankshaft, and a connecting rod is provided at the front end of the crankshaft for insertion and connection.

[0016] Preferably, rolling bearings are provided between the connecting rod and the crankshaft, and between the crankshaft and the machine body.

[0017] Preferably, the connecting rod is provided with bearing retaining rings at both ends that engage with the crankshaft.

[0018] Preferably, the stamping support plate is provided with a tooling rod that is inserted into the stamping support plate, and the tooling rod is provided with an assembly T-slot that communicates with the upper end face of the tooling rod.

[0019] Preferably, the front end of the body is provided with a front cover.

[0020] Preferably, the rear end of the body is provided with a rear cover.

[0021] This invention can achieve the following effects: This invention provides a servo press, which, compared with existing technologies, features a simple structure and good operational stability. It uses a servo motor as the power source, directly driving the crankshaft via a coupling, and then converts the rotary motion into linear stamping motion via a connecting rod.

[0022] High-precision control: The servo motor can precisely control the speed, position and pressure of the slider (the end of the connecting rod) to achieve complex stamping processes.

[0023] Energy saving: It does not require the continuous operation of a large inertia flywheel, and only consumes energy during stamping, resulting in high energy efficiency.

[0024] High flexibility: The stamping curve can be easily adjusted (such as fast descent, slow stamping, and fast return) to adapt to different materials and process requirements.

[0025] Simplified structure: It eliminates complex components such as clutches and flywheels, making maintenance simpler and noise lower. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a structural cross-sectional view of the present invention.

[0028] In the diagram: 1. Pressure assembly; 2. Stamping support plate; 3. Pressure base; 4. Rear cover; 5. Coupling; 6. Machine body; 7. Rolling bearing; 8. Bearing retaining ring; 9. Crankshaft; 10. Front cover; 11. Connecting rod; 12. Tooling rod; 13. Assembly T-slot; 14. Servo motor. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0030] Example: Figure 1 and Figure 2 As shown, a servo press includes a pressure base 3, with a stamping support plate 2 on the upper end of the pressure base 3. A tooling rod 12 is inserted into the stamping support plate 2, and an assembly T-slot 13 communicating with the upper surface of the tooling rod 12 is provided on the tooling rod 12. A pressure assembly 1, fixedly connected to the pressure base 3, is located above the stamping support plate 2. The pressure assembly 1 includes a body 6, with a front cover 10 at the front end and a rear cover 4 at the rear end. A crankshaft 9 is located on the upper part of the body 6, and a servo motor 14 is located at the rear end of the upper part of the body 6. A coupling 5 is provided between the servo motor 14 and the crankshaft 9. A connecting rod 11, inserted into the front end of the crankshaft 9, is provided. Rolling bearings 7 are provided between the connecting rod 11 and the crankshaft 9, and between the crankshaft 9 and the body 6. Bearing retaining rings 8, which are engaged with the crankshaft 9, are provided at both ends of the connecting rod 11.

[0031] Workflow: Preparation: According to the stamping task, fix the corresponding lower die to the T-slot 13 of the tooling rod 12 with T-bolts.

[0032] Start-up: The control system issues a command, and the servo motor 14 begins to rotate according to the preset speed curve.

[0033] Transmission: Power is transmitted to crankshaft 9 through coupling 5, and crankshaft rotates smoothly under the support of rolling bearing 7.

[0034] Stamping: The rotational motion of the crankshaft 9 is converted into a vertically downward linear motion through the connecting rod 11, which drives the upper die (mounted on the slider at the end of the connecting rod) to move downward, and stamps the workpiece placed on the stamping support plate 2.

[0035] Return: The crankshaft continues to rotate, driving the connecting rod and slider to return upwards, completing one work cycle.

[0036] Control: Throughout the process, the servo system monitors and controls the motor's speed and torque in real time, thereby precisely controlling the slider's speed, position, and output pressure.

[0037] In summary, this servo press features a simple structure and good operational stability. It uses a servo motor as the power source, directly driving the crankshaft via a coupling, and then the connecting rod converts the rotary motion into linear stamping motion.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A servo press, characterized in that: The pressure base (3) is provided with a stamping support plate (2) at the upper end of the pressure base (3), and a pressure assembly (1) fixedly connected to the pressure base (3) is provided above the stamping support plate (2); the pressure assembly (1) includes a body (6), a crankshaft (9) is provided on the upper part of the body (6), a servo motor (14) is provided at the upper rear end of the body (6), a coupling (5) is provided between the servo motor (14) and the crankshaft (9), and a connecting rod (11) is provided at the front end of the crankshaft (9) and inserted into the crankshaft (9).

2. A servo press according to claim 1, characterized in that: Rolling bearings (7) are provided between the connecting rod (11) and the crankshaft (9), and between the crankshaft (9) and the machine body (6).

3. A servo press according to claim 2, characterized in that: The connecting rod (11) is provided with bearing retaining rings (8) at both ends that are engaged with the crankshaft (9).

4. A servo press according to claim 1, characterized in that: The stamping support plate (2) is provided with a tooling rod (12) that is inserted into the stamping support plate (2), and the tooling rod (12) is provided with an assembly T-slot (13) that is connected to the upper end face of the tooling rod (12).

5. A servo press according to claim 1, characterized in that: The front end of the body (6) is provided with a front cover (10).

6. A servo press according to claim 1, characterized in that: The rear end of the body (6) is provided with a rear cover (4).

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