Digital forging control system of oil press

Abstract

The invention relates to the technical field of forging, in particular to a digital forging control system of an oil press. Comprising an oil press, clamps, distance measuring devices, an operation trolley and a control system. The oil press comprises a main body frame, a hydraulic cylinder, an oil press hammer head moving beam and a hammer head; the clamp comprises a lower V-shaped sizing block and an upper V-shaped iron which are arranged on the lower side of the oil press, and the upper V-shaped iron is fixed on a hammerhead on the lower side of a hammerhead moving beam of the oil press; the distance measuring device comprises a laser distance measuring instrument arranged on the side face of the top of the oil press main body frame and a light reflecting plate arranged on the side face of the oil press hammer moving beam. The control system comprises a machine cabinet arranged beside the oil press, a machine side touch screen is arranged on the machine cabinet, and an indoor touch screen is arranged in the operation room. The machine side touch screen and the indoor touch screen are connected with a PLC of a control system through a DP bus to transmit data, and digital control over forging of the oil press is achieved by editing a PLC program and an operation interface of the touch screen.

Description

Technical Field

[0001] The invention relates to the technical field of forging, and in particular to a digital forging control system for a hydraulic press. Background Art

[0002] As the main equipment for forging process, the smooth and efficient operation of hydraulic press directly affects the quality and cost of products. In the current production mode, the on-site personnel use the measuring tool to measure the diameter of the workpiece, mark it on the press column with chalk, and the operator of the hydraulic press controls the hammer to press down, and lifts the hammer when the arrow on the ruler reaches the chalk mark.

[0003] The current process has the following defects:

[0004] 1. Manual measurement using chalk marks has errors. At the same time, the press operator observes the marks 5 meters away to control the downward pressure of the hammer head, which further amplifies the error. The method of relying on experience cannot stabilize product quality.

[0005] 2. It takes a long time to manually measure the diameter of the workpiece and then mark it. Each workpiece needs to be measured 3-5 times during the forging process. In order to ensure the normal forging, the furnace temperature of the workpiece needs to be increased and the influence of heat dissipation in the air needs to be reduced, which invisibly increases the production cost.

[0006] 3. The surface temperature of the workpiece is about 1200℃. The distance is close during manual measurement, the operating environment is harsh and there are safety hazards. Summary of the invention

[0007] The main purpose of the present invention is to provide a digital forging control system for a hydraulic press so as to effectively solve the problems raised in the background technology.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a digital forging control system for a hydraulic press, comprising a hydraulic press, a fixture, a distance measuring device, an operating vehicle, and a control system; the hydraulic press comprises a main frame, a hydraulic cylinder, a hydraulic press hammer head moving beam, and a hammer head; the fixture comprises a lower V-shaped washer iron and an upper V-shaped iron arranged on the lower side of the hydraulic press, and the upper V-shaped iron is fixed on the hammer head on the lower side of the hydraulic press hammer head moving beam; the distance measuring device is a laser distance measuring device arranged on the top side of the hydraulic press main frame, and a reflective plate arranged on the side of the hydraulic press hammer head moving beam; the control system comprises a cabinet arranged next to the hydraulic press, a machine-side touch screen is arranged on the cabinet, and an indoor touch screen is arranged in the operating room.

[0009] Preferably, the machine-side touch screen and the indoor touch screen are connected to the PLC of the control system via the DP bus to transmit data, and digital control of the hydraulic press forging is achieved by editing the PLC program and the operating interface of the touch screen.

[0010] Preferably, the lower V-shaped washer is provided with various specifications according to the size of the workpiece.

[0011] Preferably, the touch screen on the machine side displays the press stroke control interface, which is provided with the actual position of the hammer head, the initial position of the hammer head, the process value, the target value, the V-shaped pad iron model, the detection switch window, and the upper V-shaped iron pressed into place warning light.

[0012] Preferably, the process value on the machine-side touch screen refers to the diameter value of the workpiece set according to the process step, and the target value refers to the hammer position value corresponding to the process step.

[0013] Preferably, the actual position of the hammer head and the initial setting data of the hammer head on the machine-side touch screen are calculated by the control system according to the distance from the rangefinder to the reflector.

[0014] Preferably, the indoor touch screen displays a distance measurement control interface, which is provided with a press initial position, actual position, and target position window; it is also provided with an operating vehicle actual position, a target position window, and an upper V-shaped iron pressed into place indicator light and a reset button.

[0015] Preferably, the actual position of the press on the indoor touch screen refers to the real-time position of the hammer head changing up and down, which is the same as the actual position value of the hammer head on the machine side touch screen, and the target position of the press is the position corresponding to the final process size of the hammer head.

[0016] Preferably, the operating vehicle refers to a vehicle used to move workpieces during processing, and the actual position and target position of the operating vehicle on the indoor touch screen refer to the real-time position of the operating vehicle and the target position of the movement determined according to the process.

[0017] Preferably, when the value displayed in the actual position window of the indoor touch screen press is equal to the target position value of the press, the pressure indicator light turns green and the sound and light alarm is triggered to remind the operator. At this time, the program controls the hammer head to only move upward to prevent further pressure from exceeding the process requirements.

[0018] The beneficial effects of the present invention are as follows: 1. The accuracy of laser distance measurement is much higher than that of manual measurement, thus avoiding the influence of human error on product quality; 2. After the hammer head reaches the target position, the program is locked and only the upward movement can be performed, thus preventing the operation error from continuing to press down and produce unqualified products; 3. Digital forging reduces the time the workpiece is exposed to the air and reduces the energy cost required for heating; 4. No personnel are required to contact the high-temperature workpiece for measurement, thus reducing the risk of potential safety hazards and reducing personnel and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Attached Figure 2 It is a schematic diagram of the structure of the touch screen of the hydraulic press of the present invention.

[0021] Attached Figure 3 It is a schematic diagram of the structure of the indoor touch screen of the present invention.

[0022] Attached Figure 1 —3, lower V-shaped washer 1, workpiece 2, upper V-shaped iron 3, hydraulic press hammer moving beam 4, hydraulic cylinder 5, main frame 6, laser rangefinder 7, reflector 8, cabinet 9, machine side touch screen 10, hammer 11. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Attached Figure 1 As shown in FIG. 3 , a digital forging control system for a hydraulic press comprises a hydraulic press, a fixture, a distance measuring device, an operating vehicle and a control system; the hydraulic press comprises a main frame 6, a hydraulic cylinder 5, a hydraulic press hammer moving beam 4 and a hammer 11; the fixture comprises a lower V-shaped washer iron 1 and an upper V-shaped iron 3 arranged on the lower side of the hydraulic press, and the upper V-shaped iron 3 is fixed on the hammer 11 on the lower side of the hydraulic press hammer moving beam 4; the distance measuring device comprises a laser distance meter 7 arranged on the top side of the main frame 6 of the hydraulic press, and a reflector 8 arranged on the side of the hydraulic press hammer moving beam 4; the control system comprises a cabinet 9 arranged next to the hydraulic press, a machine-side touch screen 10 is arranged on the cabinet 9, and an indoor touch screen is arranged in the operating room.

[0025] The machine-side touch screen 10 and the indoor touch screen are connected to the PLC of the control system through the DP bus to transmit data. By editing the PLC program and the operating interface of the touch screen, the digital control of the hydraulic press forging is realized.

[0026] The lower V-shaped washer 1 is provided with various specifications according to the size of the workpiece 2 .

[0027] The machine side touch screen 10 displays the press stroke control interface, which is provided with the actual position of the hammer head, the initial position of the hammer head, the process value, the target value, the V-shaped washer model, the detection switch window, and the upper V-shaped iron 3 is pressed into place warning light.

[0028] The process value on the machine-side touch screen 10 refers to the diameter value of the workpiece set according to the process step, and the target value refers to the hammer position value corresponding to the process step.

[0029] The actual position of the hammer head and the initial position data of the hammer head on the machine-side touch screen 10 are calculated by the control system according to the distance from the rangefinder to the reflector 8 .

[0030] The indoor touch screen displays a distance measurement control interface, which is provided with windows for the initial position, actual position and target position of the press; it is also provided with windows for the actual position and target position of the operating vehicle, as well as an indicator light indicating that the upper V-shaped iron 3 is pressed into place and a reset button.

[0031] The actual position of the press on the indoor touch screen refers to the real-time position of the hammer head 11 changing up and down, which is the same as the actual position value of the hammer head on the machine side touch screen 10. The target position of the press is the position corresponding to the final process size of the hammer head 11.

[0032] The operating vehicle refers to a vehicle used to move the workpiece 2 during the processing. The actual position and target position of the operating vehicle on the indoor touch screen refer to the real-time position of the operating vehicle and the target position of the movement determined according to the process.

[0033] When the value displayed in the actual position window of the indoor touch screen press is equal to the target position value of the press, the pressure indicator light turns green and the sound and light alarm is triggered to remind the operator. At this time, the program controls the hammer head to only move upward to prevent further pressure from exceeding the process requirements.

[0034] Beneficial effects: 1. The accuracy of laser distance measurement is much higher than that of manual measurement, which avoids the impact of human error on product quality; 2. After the hammer reaches the target position, the program is locked and only the upward action can be performed, preventing operating errors from continuing to press down and producing unqualified products; 3. Digital forging reduces the time the workpiece is exposed to the air and reduces the energy cost required for heating; 4. There is no need for personnel to contact high-temperature workpieces for measurement, which reduces the risk of safety hazards and reduces personnel and production costs.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital forging control system for a hydraulic press, characterized in that: It includes a hydraulic press, a fixture, a distance measuring device, an operating vehicle, and a control system; the hydraulic press includes a main frame, a hydraulic cylinder, a hydraulic press hammer head moving beam, and a hammer head; the fixture includes a lower V-shaped washer iron and an upper V-shaped iron arranged on the lower side of the hydraulic press, and the upper V-shaped iron is fixed on the hammer head on the lower side of the hydraulic press hammer head moving beam; the distance measuring device is a laser distance measuring device arranged on the top side of the hydraulic press main frame, and a reflective plate arranged on the side of the hydraulic press hammer head moving beam; the control system includes a cabinet arranged next to the hydraulic press, a machine side touch screen is arranged on the cabinet, and an indoor touch screen is arranged in the operating room.

2. The digital forging control system for a hydraulic press according to claim 1, characterized in that: The machine-side touch screen and the indoor touch screen are connected to the PLC of the control system through the DP bus to transmit data. By editing the PLC program and the operating interface of the touch screen, digital control of the hydraulic press forging is realized.

3. The digital forging control system for a hydraulic press according to claim 1, characterized in that: The lower V-shaped washer has various specifications according to the size of the workpiece.

4. The digital forging control system for a hydraulic press according to claim 1, characterized in that: The touch screen on the machine side displays the press stroke control interface, which is equipped with the actual position of the hammer head, the initial position of the hammer head, the process value, the target value, the V-shaped washer model, the detection switch window, and the upper V-shaped iron pressed into place warning light.

5. The digital forging control system for a hydraulic press according to claim 4, characterized in that: The process value on the touch screen on the machine side refers to the diameter value of the workpiece set according to the process steps, and the target value refers to the hammer position value corresponding to the same process step.

6. The digital forging control system for a hydraulic press according to claim 4, characterized in that: The actual position of the hammer head and the initial setting data of the hammer head on the touch screen at the machine side are calculated by the control system according to the distance from the rangefinder to the reflector.

7. The digital forging control system for a hydraulic press according to claim 1, characterized in that: The indoor touch screen displays a distance measurement control interface, which is provided with windows for the initial position, actual position and target position of the press; it is also provided with windows for the actual position and target position of the operating vehicle, as well as an indicator light indicating that the upper V-shaped iron is pressed into place and a reset button.

8. The digital forging control system for a hydraulic press according to claim 7, characterized in that: The actual position of the press on the indoor touch screen refers to the real-time position of the hammer head changing up and down, which is the same as the actual position value of the hammer head on the touch screen on the side of the machine. The target position of the press is the position corresponding to the final process size of the hammer head.

9. The digital forging control system for a hydraulic press according to claim 1, characterized in that: The operating vehicle refers to the vehicle used to move the workpiece during the processing. The actual position and target position of the operating vehicle on the indoor touch screen refer to the real-time position of the operating vehicle and the target position of the movement determined according to the process.

10. The digital forging control system of a hydraulic press according to claim 1, characterized in that: When the value displayed in the actual position window of the indoor touch screen press is equal to the target position value of the press, the pressure indicator light turns green and the sound and light alarm is triggered to remind the operator. At this time, the program controls the hammer head to only move upward to prevent further pressure from exceeding the process requirements.

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