Full-automatic interactive recognition drilling method

Abstract

The invention relates to a full-automatic interactive recognition drilling method which comprises the following steps: (1) workpiece management: dividing each station in a program, judging whether a hub completely enters the next station or not through a sensor between every two stations, accurately transmitting a product model, and controlling the next mechanism to act at the same time; (2) drilling processing: (2-1) cutter selection: selecting a cutter and processing parameters according to product model information; (2-2) drilling feeding is conducted, specifically, after tool selection is completed, the tool rotating speed is output to a frequency converter according to the product model, and after the frequency converter controls a motor to reach the preset rotating speed, drilling machining is conducted; and (3) man-machine interaction: connecting the core control and processing module through a PLC and a touch screen, and setting system parameters and monitoring states. Mixed-line production can be carried out, the time for replacing tools and formulas is shortened, and therefore the production efficiency is improved, and errors generated when machining parameters are replaced are avoided.

Description

Technical Field

[0001] This invention relates to a drilling method, specifically a fully automatic interactive identification drilling method, belonging to the technical field of machining. Background Technology

[0002] Wheel hubs require center drilling during processing. Traditional drilling equipment is mostly manual, requiring one person per machine, which has drawbacks such as high labor requirements and inability to produce products on mixed production lines. Therefore, manufacturing a highly automated, stable, and efficient production machine is an inevitable trend in market development.

[0003] This invention is thus derived. Summary of the Invention

[0004] To address the aforementioned technical problems in the prior art, the purpose of this invention is to provide a fully automated interactive identification drilling method that enables mixed-line production, reduces the time spent changing tools and formulas, thereby improving production efficiency and avoiding errors caused by changing processing parameters.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: A fully automated interactive borehole identification method includes the following steps: (1) Workpiece management: Divide each station in the program, use sensors between each station to determine whether the wheel hub has completely entered the next station, accurately transmit the product model, and control the next mechanism action; (2) Drilling: The drilling process includes the following steps: (2-1) Tool selection: Select the tool and machining parameters according to the product model information; (2-2) Drilling feed: After the tool is selected, the tool speed is output to the frequency converter according to the product model. After the frequency converter controls the motor to reach the preset speed, the drilling process is performed. (3) Human-machine interaction: The core control and processing module is connected through the PLC and touch screen for system parameter setting and status monitoring.

[0006] In step (1), a production line station is adopted. The production line motor is controlled according to the sensor signal. Each station has a product and the product model is assigned to the corresponding station.

[0007] In step (1), when loading the product, the loading station identifies the status signal of the loading gripper. When the gripper clamps the hub, the clamping signal is transmitted to the PLC, and the product model is transmitted from the assembly line station to the gripper station. When the gripper clamps the product and enters the drilling station, the clamping fixture transmits the clamping signal to the PLC after clamping, and the product model is transmitted from the gripper station to the drilling station.

[0008] In the aforementioned assembly line workstation, each workstation is equipped with a motor and a sensor, and the upper gripper has an action positioning signal.

[0009] In step (2-1), the tool is changed using a tool changing system.

[0010] When the tool changing system performs a tool change, it first controls the tool locking cylinder to release, and determines that the release is complete by a magnetic switch. Then, using servo positioning mode, it rotates the selected tool to the drilling position, and then controls the locking cylinder to lock it. At the same time, the magnetic switch transmits the locking signal to the PLC to complete the tool change.

[0011] When the cutting tool rotates to the drilling position, the servo feeds back the actual position to the PLC for secondary confirmation.

[0012] The drilling process in step (2-2) includes the following three steps: Step 1: Quickly approach the drilling location; Step 2: Convert to feed rate and perform drilling; Step 3: After drilling to the desired depth, the servo control motor quickly returns to zero.

[0013] A timeout alarm is provided in step (3).

[0014] The fully automatic interactive identification drilling method is performed in a drilling machine, which includes a lifting device and a rotary drilling device. The rotary drilling device includes a mounting frame, on which a spindle motor, a stationary rotary servo motor, and several power heads are mounted. The output end of the spindle motor and the input end of the power heads are both equipped with synchronous pulleys, and the several synchronous pulleys are connected by a synchronous belt. The power heads are mounted on a slewing bearing plate, and the outer surface of the slewing bearing plate is equipped with a driven gear. The output end of the stationary rotary servo motor is equipped with a driving gear, and the driving gear meshes with the driven gear.

[0015] The beneficial effects of this invention are as follows: This invention's fully automated interactive identification drilling method achieves rapid and seamless integration by rationally allocating various process nodes, reducing unnecessary waiting time, increasing cycle time, and automatically loading and unloading products, as well as automatically selecting tools and processing parameters, greatly improving accuracy. This invention first accurately transmits the product model number through sensor and motor control. When the product enters the drilling station, the model number is accurately transmitted to the PLC, which then controls the mechanism's actions based on the pre-built tool library. This invention enables mixed-line production, reducing the time spent changing tools and formulas, thereby improving production efficiency and avoiding errors caused by changing processing parameters. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the drilling machine of the present invention; Figure 2 This is a side view of the drilling machine of the present invention. Figure 3 This is a three-dimensional structural diagram of the rotary drilling device of the present invention; Figure 4 This is a cross-sectional view of the rotary drilling device of the present invention; Figure 5 This is a schematic diagram of the transmission relationship of the station rotation servo motor in this invention; Figure 6 This is a schematic diagram of the locking device in this invention; Among them, 1 is the lifting device, 11 is the frame, 12 is the lifting motor, 13 is the lifting screw, 14 is the linear guide rail, 15 is the lifting seat, 16 is the slider, 2 is the rotary drilling device, 21 is the mounting bracket, 211 is the locking groove, 22 is the main spindle motor, 23 is the power head, 24 is the station rotary servo motor, 25 is the synchronous pulley, 26 is the synchronous belt, 27 is the slewing bearing plate, 28 is the drive gear, 29 is the locking device, 291 is the cylinder, 292 is the locking rod, and 210 is the drill bit. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0018] The fully automated interactive identification drilling method of the present invention includes automatic product loading and unloading, automatic tool selection, and processing parameters. First, the model number of the corresponding product is accurately transmitted through the control of sensors and motors. When the product enters the drilling station, the model number is accurately transmitted to the PLC. The program then controls the mechanism's actions based on a pre-built tool library.

[0019] The fully automatic interactive borehole recognition method of the present invention specifically includes the following steps: (1) Workpiece management: Each station on the production line must have a motor and a sensor.

[0020] Each workstation is divided in the program. Sensors between each workstation determine whether the wheel hub has fully entered the next workstation and accurately transmit the product model, while simultaneously controlling the next mechanism's action. The production line controls the production line motor based on sensor signals, ensuring that each workstation contains only one product and accurately assigning the model number to the corresponding workstation; the loading gripper mechanism... Equipped with an action positioning signal, the loading station determines the position by the status signal of the gripper. When the gripper clamps the hub, the clamping signal is transmitted to the PLC, and the product model is transmitted from the assembly line station to the gripper station. When the gripper clamps the product and enters the drilling station, the fixture is aligned and clamped, and the clamping signal is transmitted to the PLC. At this time, the model is transmitted from the gripper station to the drilling station.

[0021] (2) Drilling (2-1) Tool Selection When the gripper places the product at the drilling station, the product model information is transmitted to the drilling station. The program automatically selects the cutting tool and machining parameters based on the model. The tool changing system uses servo positioning control for precise rotation and provides actual position feedback to confirm the tool change is in place. During tool changing, the tool locking cylinder is first released, and a magnetic switch confirms that the release is complete. Then, using servo positioning mode, the required tool is precisely rotated to the drilling station. The servo sends the actual position feedback to the PLC for secondary confirmation. Once confirmed, the locking cylinder is tightened to ensure correct tool change and guarantee machining accuracy. Simultaneously, the magnetic switch transmits a locking signal to the PLC, completing the tool change.

[0022] (2-2) Drilling feed After tool changing, the system outputs the tool speed to the frequency converter based on the tool model, and the frequency converter controls the motor to reach the preset speed. The machining process mainly consists of three steps, achieved through servo positioning mode: Step 1 is rapid approach to the drilling position; Step 2 is switching to feed rate for drilling; Step 3 is that after drilling is complete, the servo-controlled motor quickly returns to zero. Servo positioning control can rationally allocate machining time, achieving a more efficient drilling process.

[0023] (3) Human-computer interaction The core control and processing module is connected to a PLC and a touchscreen for system parameter setting and status monitoring. Simultaneously, it triggers a timeout alarm based on the positioning signals from the mechanism, ensuring that problems can be quickly identified and resolved in the event of a machine malfunction.

[0024] Furthermore, the drilling method of the present invention is performed in a drilling machine, such as... Figure 1 and 2 The drilling machine includes a lifting device 1 and a rotary drilling device 2. The lifting device 1 includes a frame 11 mounted on both sides of the rotary drilling device 2. A lifting motor 12 is mounted on the frame 11, and the lifting motor 12 is connected to a lifting lead screw 13. Linear guide rails 14 are provided on both sides of the lifting lead screw 13. Figure 3-5As shown, the rotary drilling device 2 includes a mounting frame 21. Lifting seats 15 are located on both sides of the mounting frame 21. The lifting seats 15 are connected to a linear guide rail 14 via sliders 16. A screw nut (located on the back of the lifting seat 15, not shown in the accompanying drawings) is provided on the lifting screw 13. The screw nut is mounted on the lifting seat 15, and the sliders 16 are located on both sides of the screw nut. When lifting is required, the lifting motor 12 drives the rotation of the lifting screw 13, causing the lifting seat 15 to move up and down along the linear guide rail 14, thereby driving the rotary drilling device 2 to move up and down. This allows the rotary drilling device 2 to adjust its height according to actual needs, achieving precise drilling and improving drilling quality.

[0025] Furthermore, the mounting frame 21 of this invention is equipped with a spindle motor 22, a stationary rotary servo motor 24, and several power heads 23. Both the output end of the spindle motor 22 and the input end of the power heads 23 are equipped with synchronous pulleys 25, and the several synchronous pulleys 25 are connected by a synchronous belt 26. The power heads 23 are mounted on a slewing bearing disk 27, and the outer surface of the slewing bearing disk 27 is equipped with a driven gear. The output end of the stationary rotary servo motor 24 is equipped with a driving gear 28, which meshes with the driven gear. Further, this invention uses four power heads 23, which are equally spaced around the slewing bearing disk 27. Multiple power heads can also be used as needed, such as three, five, or six. Therefore, the spindle of the present invention uses a spindle motor 22 to drive multiple power heads 23, which reduces the number of motors, reduces operating power, and achieves the purpose of cost reduction and efficiency improvement; and each of the multiple power heads 23 is equipped with a drill bit 210, that is, the multiple drill bits 210 directly rotate the required tool station through the station rotation servo motor 24, which speeds up the production cycle. Compared with the traditional tool changing mechanism, the structure is simpler, the efficiency is faster, and the accuracy of repeated positioning is also improved.

[0026] Further settings, such as Figure 6 As shown, the mounting bracket 21 of this invention is equipped with a locking device 29, which is located on one side of the stationary rotary servo motor 24. The locking device 29 includes a cylinder 291, which is connected to a locking rod 292. The mounting bracket 21 has a locking groove 211, and the locking rod 292 enters the locking groove 211 to achieve locking. This cylinder-driven locking device 29 effectively ensures the mechanical force during operation and further guarantees drilling accuracy.

[0027] This invention features a high degree of automation and stability, significantly reducing manual intervention, improving production efficiency, and lowering labor costs. By controlling servo motors and frequency converters through system formulas, this invention can quickly switch between cutting tools and processing parameters corresponding to different products, ensuring processing efficiency and effectiveness.

[0028] The above embodiments are only used to explain the inventive concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial modifications made to the present invention using this concept should fall within the protection scope of the present invention.

Claims

1. A fully automatic interactive borehole recognition method, characterized in that... Includes the following steps: (1) Workpiece management: Divide each station in the program, use sensors between each station to determine whether the wheel hub has completely entered the next station, accurately transmit the product model, and control the next mechanism action; (2) Drilling: The drilling process includes the following steps: (2-1) Tool selection: Select the tool and machining parameters according to the product model information; (2-2) Drilling feed: After the tool is selected, the tool speed is output to the frequency converter according to the product model. After the frequency converter controls the motor to reach the preset speed, the drilling process is performed. (3) Human-machine interaction: The core control and processing module is connected through the PLC and touch screen for system parameter setting and status monitoring.

2. The fully automatic interactive borehole recognition method as described in claim 1, characterized in that: In step (1), a production line station is adopted. The production line motor is controlled according to the sensor signal. Each station has a product and the product model is assigned to the corresponding station.

3. The fully automatic interactive borehole recognition method as described in claim 2, characterized in that: In step (1), when loading the product, the loading station identifies the status signal of the loading gripper. When the gripper clamps the hub, the clamping signal is transmitted to the PLC, and the product model is transmitted from the assembly line station to the gripper station. When the gripper clamps the product and enters the drilling station, the clamping fixture transmits the clamping signal to the PLC after clamping, and the product model is transmitted from the gripper station to the drilling station.

4. The fully automatic interactive borehole recognition method as described in claim 3, characterized in that: In the aforementioned assembly line workstation, each workstation is equipped with a motor and a sensor, and the upper gripper has an action positioning signal.

5. The fully automatic interactive borehole recognition method as described in claim 1, characterized in that: In step (2-1), the tool is changed using a tool changing system.

6. The fully automatic interactive borehole recognition method as described in claim 5, characterized in that: When the tool changing system performs a tool change, it first controls the tool locking cylinder to release, and determines that the release is complete by a magnetic switch. Then, using servo positioning mode, it rotates the selected tool to the drilling position, and then controls the locking cylinder to lock it. At the same time, the magnetic switch transmits the locking signal to the PLC to complete the tool change.

7. The fully automatic interactive borehole recognition method as described in claim 6, characterized in that: When the cutting tool rotates to the drilling position, the servo feeds back the actual position to the PLC for secondary confirmation.

8. The fully automatic interactive borehole recognition method as described in claim 1, characterized in that: The drilling process in step (2-2) includes the following three steps: Step 1: Quickly approach the drilling location; Step 2: Convert to feed rate and perform drilling; Step 3: After drilling to the desired depth, the servo control motor quickly returns to zero.

9. The fully automatic interactive borehole recognition method as described in claim 1, characterized in that: A timeout alarm is provided in step (3).

10. The fully automatic interactive borehole identification method according to any one of claims 1-9, characterized in that: The fully automatic interactive identification drilling method is performed in a drilling machine, which includes a lifting device and a rotary drilling device. The rotary drilling device includes a mounting frame, on which a spindle motor, a stationary rotary servo motor, and several power heads are mounted. The output end of the spindle motor and the input end of the power heads are both equipped with synchronous pulleys, and the several synchronous pulleys are connected by a synchronous belt. The power heads are mounted on a slewing bearing plate, and the outer surface of the slewing bearing plate is equipped with a driven gear. The output end of the stationary rotary servo motor is equipped with a driving gear, and the driving gear meshes with the driven gear.

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