阅读说明：本技术 一种内置伺服电机的伺服电液缸折弯机 (Servo electrohydraulic cylinder bending machine with built-in servo motor ) 是由 王钦若 王林 余凯明 储银根 于 2021-07-28 设计创作，主要内容包括：本发明涉及全自动数控钣金折弯机的技术领域,特别是涉及一种内置伺服电机的伺服电液缸折弯机,其与传统折弯机相比误差降低,加工精度提高,提高操控的精准度和安全性；伺服电液缸、伺服电机、力传感器、刀模架、折弯刀模台、程序操控台、电气控制系统和脚踏启动开关,折弯刀模台上设置有机架,伺服电液缸安装于机架上,并且伺服电液缸的内部设置有活塞螺杆,伺服电机安装于伺服电液缸上,刀模架通过力传感器与伺服电液缸的底端相连接,并且伺服电液缸、伺服电机和力传感器均设置有两组,程序操控台和电气控制系统均安装于机架的左端,并且程序操控台上设置有系统显示屏,脚踏启动开关安装于折弯刀模台的前端底部。(The invention relates to the technical field of full-automatic numerical control metal plate bending machines, in particular to a servo electric hydraulic cylinder bending machine with a built-in servo motor, which has the advantages of reducing errors, improving processing precision and improving control precision and safety compared with the traditional bending machine; servo electrohydraulic cylinder, servo motor, force sensor, the knife die carrier, bending knife die platform, the platform is controlled to the procedure, electrical control system and pedal starting switch, bending knife die bench is provided with the frame, servo electrohydraulic cylinder installs in the frame, and servo electrohydraulic cylinder's inside is provided with piston screw, servo motor installs on servo electrohydraulic cylinder, knife die carrier is connected with servo electrohydraulic cylinder's bottom through force sensor, and servo electrohydraulic cylinder, servo motor and force sensor all are provided with two sets ofly, the platform is controlled to the procedure and electrical control system all installs in the left end of frame, and the procedure is controlled the bench and is provided with the system display screen, pedal starting switch installs in bending knife die platform's front end bottom.)

1. A servo electro-hydraulic cylinder bending machine with a built-in servo motor is characterized in that a servo electro-hydraulic cylinder (2), a servo motor (1), a force sensor (3), a tool rest (4), a bending tool rest (5), a program control platform (6), an electrical control system (7) and a pedal starting switch (8) are arranged, a frame is arranged on the bending tool rest (5), the servo electro-hydraulic cylinder (2) is installed on the frame, a piston screw rod is arranged inside the servo electro-hydraulic cylinder (2), the servo motor (1) is installed on the servo electro-hydraulic cylinder (2), the tool rest (4) is connected with the bottom end of the servo electro-hydraulic cylinder (2) through the force sensor (3), two groups of the servo electro-hydraulic cylinder (2), two groups of the servo motor (1) and the force sensor (3) are arranged, the program control platform (6) and the electrical control system (7) are installed at the left end of the frame, and a system display screen is arranged on the program control platform (6), and a pedal starting switch (8) is arranged at the bottom of the front end of the bending knife mold platform (5).

2. The servo electro-hydraulic cylinder bending machine with the built-in servo motor as claimed in claim 1, characterized in that the servo electro-hydraulic cylinder (2) and the cutting die frame (4) are connected by a force sensor (3), and the control system has a pressure feedback function.

3. The servo electro-hydraulic cylinder bending machine with built-in servo motor according to claim 1, characterized in that a safety grating (10) is arranged between the tool support (4) and the bending tool support (5).

4. The servo electro-hydraulic cylinder bending machine with the built-in servo motor as claimed in claim 1, further comprising emergency stop switches (9), wherein the emergency stop switches (9) are mounted on the bending knife mold table (5), and the number of the emergency stop switches (9) is multiple groups.

5. Servo-electro-hydraulic cylinder bending machine with built-in servo motor according to claim 1, characterized in that said foot-actuated switch (8) is provided with a shutter.

Technical Field

The invention relates to the technical field of full-automatic numerical control sheet metal bending machines, in particular to a servo electric hydraulic cylinder bending machine with a built-in servo motor.

Background

The bending machine is oriented to the field of metal sheet metal bending, forming and cutting, and supplies power (hydraulic pressure, air pressure, a motor and the like) to a knife die frame, and a bending die is installed between the knife die frame and a bending knife die table, so that a metal sheet can be folded into a required metal sheet shape. The bending machine consists of three basic parts, namely a power part, a knife die frame, a bending knife die table, a driving system and a control system.

Disclosure of Invention

In order to solve the technical problems, the invention provides the servo electric hydraulic cylinder bending machine with the built-in servo motor, which has the advantages of reducing errors, improving processing precision and improving control precision and safety compared with the traditional bending machine.

The invention discloses a servo electro-hydraulic cylinder bending machine with a built-in servo motor, which comprises a servo electro-hydraulic cylinder, a servo motor, a force sensor, a tool rest, a bending tool rest, a program control platform, an electrical control system and a pedal starting switch.

According to the servo electro-hydraulic cylinder bending machine with the built-in servo motor, the servo electro-hydraulic cylinder is connected with the cutting die frame through the force sensor, and the control system has a pressure feedback function.

According to the servo electro-hydraulic cylinder bending machine with the built-in servo motor, the safety grating is arranged between the knife die frame and the bending knife die frame.

The servo electro-hydraulic cylinder bending machine with the built-in servo motor further comprises emergency stop switches, wherein the emergency stop switches are mounted on the bending cutter die table, and the number of the emergency stop switches is multiple.

According to the servo electrohydraulic cylinder bending machine with the built-in servo motor, the pedal starting switch is provided with the shielding cover.

Compared with the prior art, the invention has the beneficial effects that:

1. the tool rest adopts a servo electric hydraulic cylinder to realize accurate pressing stroke control, the positioning accuracy is less than 0.01mm, and is incomparable with the positioning accuracy of 0.1mm-0.5mm of a traditional bending machine, the traditional bending machine adopts an oil cylinder as power, an auxiliary pull rod type grating ruler controls the stroke, the oil cylinder controls the on-off of an oil circuit through an electromagnetic valve, the accurate positioning cannot be realized, the grating ruler feeds back to a PLC (programmable logic controller) to control the on-off of the electromagnetic valve in place, 50ms of delay exists, errors exist, and the accuracy is usually 0.1mm-0.5 mm;

2. the tool die frame is connected with a servo electro-hydraulic cylinder with a built-in servo motor by a force sensor, so that the feedback pressure condition can be seen from a system display screen in real time, the metal plate thickness and the servo electro-hydraulic cylinder pressure with the built-in servo motor can be well and accurately controlled, and the traditional bending machine does not have the function and can only manually adjust the pressure of an oil cylinder;

3. the safety grating is installed on the diameter of the cutter die frame and the diameter of the bending cutter die table, the safety grating detects that a bending program cannot be started when a hand is between the cutter die frame and the bending cutter die table, the personal safety of operators is guaranteed, and the traditional bending machine does not have the function.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;

in the drawings, the reference numbers: 1. a servo motor; 2. a servo electro-hydraulic cylinder; 3. a force sensor; 4. a knife die frame; 5. bending the cutter die table; 6. a program control platform; 7. an electrical control system; 8. a foot-operated start switch; 9. a scram switch; 10. and (4) a safety grating.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, the servo electro-hydraulic cylinder bending machine with a built-in servo motor of the invention comprises a servo electro-hydraulic cylinder 2, a servo motor 1, a force sensor 3, a knife mold frame 4, a bending knife mold table 5, a program control table 6, an electrical control system 7 and a foot-operated starting switch 8, wherein a frame is arranged on the bending knife mold table 5, the servo electro-hydraulic cylinder 2 is arranged on the frame, and a piston screw is arranged in the servo electro-hydraulic cylinder 2, the servo motor 1 is arranged on the servo electro-hydraulic cylinder 2, the cutting die frame 4 is connected with the bottom end of the servo electro-hydraulic cylinder 1 through a force sensor 3, two groups of servo electro-hydraulic cylinders 2, servo motors 1 and force sensors 3 are arranged, a program control platform 6 and an electric control system 7 are arranged at the left end of the frame, a system display screen is arranged on the program control table 6, and a pedal starting switch 8 is arranged at the bottom of the front end of the bending knife mold table 5; the part is placed at the top end of a bending knife die table 5, and is controlled by a program control table 6, a servo motor 1 drives a piston screw rod in a servo electro-hydraulic cylinder 2 to move, so that the servo electro-hydraulic cylinder 2 provides power for a knife die frame 4 to push the knife die frame 4 to move downwards, and the part is folded into a shape required by a customer through the cooperation of the knife die frame 4 and the bending knife die table 5, so that the precision and the practicability of the equipment are improved;

the stroke positioning precision of the servo electro-hydraulic cylinder with the built-in servo motor as power reaches: the accuracy of the servo electro-hydraulic cylinder with the built-in servo motor is determined by the accuracy of the servo motor, the resolution 2^23 of the built-in encoder of the servo motor is 8388608 pulse numbers (the pulse number of 360 DEG for one circle of the servo motor shaft), if the screw pitch of the piston rod of the servo electro-hydraulic cylinder with the built-in servo motor is 5mm, the minimum stroke of the servo electro-hydraulic cylinder with the built-in servo motor is 5 ^ 5 (360 DEG/2 ^23) is 0.000214 mm.

According to the servo electro-hydraulic cylinder bending machine with the built-in servo motor, the servo electro-hydraulic cylinder 1 is connected with the cutter die frame 4 through the force sensor 3, and the control system has a pressure feedback function; through setting up force sensor 3, on the feedback pressure that adds the processing with knife die carrier 4 shows the system display screen to program control platform 6 in addition, conveniently control the power take off of servo electrohydraulic cylinder 2 to improve equipment's precision.

According to the servo electro-hydraulic cylinder bending machine with the built-in servo motor, the safety grating 10 is arranged between the knife die frame 4 and the bending knife die table 5; through setting up safe grating 10, detect between tool setting die carrier 4 and the cutting die platform 5 of bending, when safe grating 10 detects someone's hand or other parts activities between tool setting die carrier 4 and the cutting die platform 5 of bending, equipment automatic shutdown operation when reducing staff and cutting die carrier 4 and the cutting die platform 5 motion range of bending, the incident that takes place the maloperation and cause to improve equipment's security.

The servo electric hydraulic cylinder bending machine with the built-in servo motor further comprises emergency stop switches 9, wherein the emergency stop switches 9 are arranged on the bending cutter die table 5, and the number of the emergency stop switches 9 is multiple; the equipment can be conveniently stopped by pressing the emergency stop switch 9 when the equipment is in fault or in danger, so that the safety of the equipment is improved.

According to the servo electrohydraulic cylinder bending machine with the built-in servo motor, the pedal starting switch 8 is provided with the shielding cover; the mistake when reducing the staff and walking about touches to improve equipment's security.

The invention relates to a servo electro-hydraulic cylinder bending machine with a built-in servo motor, which is characterized in that when in work, a part is firstly placed at the top end of a bending knife die table 5, a program control table 6 is used for controlling, a servo motor 1 drives a piston screw rod in a servo electro-hydraulic cylinder 2 to move, the servo electro-hydraulic cylinder 2 provides power for a knife die frame 4, the knife die frame 4 is pushed to move downwards, meanwhile, feedback pressure of the knife die frame 4 during additional processing is displayed on a system display screen of the program control table 6 through a force sensor 3, the power output of the servo electro-hydraulic cylinder 1 is conveniently controlled, the part is folded into a shape required by a customer through the matching of the knife die frame 4 and the bending knife die table 5, and a safety grating 10 is used for detecting a space between the knife die frame 4 and the bending knife die table 5, when the safety grating 10 detects that a hand or other parts with a person between the knife die frame 4 and the bending knife die table 5 move, the equipment automatically stops running, and safety accidents caused by misoperation when the moving ranges of the manual re-cutting die rack 4 and the bending die table 5 are reduced are only needed.

According to the servo electrohydraulic cylinder bending machine with the built-in servo motor, the mounting mode, the connecting mode or the setting mode are common mechanical modes, and the servo electrohydraulic cylinder bending machine can be implemented as long as the beneficial effects of the servo electrohydraulic cylinder bending machine can be achieved, and technicians in the industry only need to carry out mounting and operation according to the attached operating instructions.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.