An intelligent turning unit for high-precision complex thin-walled parts

Abstract

The present invention discloses a high-precision intelligent turning unit for complex thin-walled parts, comprising a loading and unloading unit; a dual-spindle automatic machining unit; a truss robot unit disposed between the loading and unloading unit and the dual-spindle automatic machining unit; an in-machine detection module disposed within the dual-spindle automatic machining unit; an automatic compensation module disposed within the dual-spindle automatic machining unit; and a PLC control system connected to the loading and unloading unit, the dual-spindle automatic machining unit, the truss robot unit, the in-machine detection module, and the automatic compensation module, respectively. The present invention interactively integrates the control systems of each unit to achieve fully automated machining of the head, with the characteristics of single-person operation and ease of use. The inner hole and outer shape processes of the part are completed in one clamping operation, ensuring the coaxiality of the inner and outer ellipsoidal surfaces; the outer ellipsoid and spherical inner groove of the part are processed in one pass, ensuring the wall thickness accuracy requirements, greatly improving production efficiency, and reducing labor intensity.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing, and in particular to an intelligent turning unit for high-precision complex thin-walled parts. Background Art

[0002] The end cap is a high-precision, complex, thin-walled component. Due to the large instantaneous impulses it experiences during operation, excessive wall thickness deviations can cause burn-through during use. Furthermore, the end cap is butt-welded to the barrel to form the body, and large differences in the butt dimensions can cause welding defects. Therefore, high requirements for wall thickness accuracy and consistency are required. This consistency is limited by the machine tool's accuracy and the operator's skill level. If the clamped parts are misaligned, there's a risk of excessive spherical wall thickness deviations. Therefore, end cap processing is difficult to achieve in large quantities. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a high-precision complex thin-walled parts intelligent turning unit with simple structure and easy operation.

[0004] The technical solution of the present invention to solve the above problems is: a high-precision complex thin-walled parts intelligent turning unit, including a loading and unloading unit for loading and unloading processing parts; a dual-spindle automatic machining unit for realizing automatic reversing turning processing of processing parts; a truss robot unit arranged between the loading and unloading unit and the dual-spindle automatic machining unit for transporting processing parts; an in-machine detection module arranged in the dual-spindle automatic machining unit for measuring the size of processing parts; an automatic compensation module arranged in the dual-spindle automatic machining unit for adjusting the processing amount; a PLC control system which is respectively connected to the loading and unloading unit, the dual-spindle automatic machining unit, the truss robot unit, the in-machine detection module, and the automatic compensation module for controlling the entire processing process.

[0005] The above-mentioned high-precision complex thin-walled parts intelligent turning unit, the loading and unloading unit includes a material rotating platform, an optical positioning detection module, and a flip unloading module. A number of insert disks are distributed in a ring on the material rotating platform. The insert disks move along a predetermined ring trajectory with the material rotating platform. The processed parts are placed on the insert disks. A flip unloading module is provided above the insert disks. The flip unloading module is fixedly mounted on the material rotating platform. The material rotating platform is provided with an ejection mechanism for lifting the insert disk upward and an optical positioning detection module for measuring whether the processed parts on the insert disk have reached the specified position.

[0006] The above-mentioned high-precision complex thin-walled parts intelligent turning unit, the flipping and unloading module includes a robotic claw and a motor. The motor is connected to the robotic claw to drive the robotic claw to flip 180°, completing the reversing transfer of the processed parts between the truss robot unit and the loading and unloading unit.

[0007] In the above-mentioned high-precision complex thin-walled parts intelligent turning unit, the optical positioning detection module adopts a laser sensor.

[0008] The above-mentioned high-precision complex thin-walled parts intelligent turning unit, the truss robot unit includes a truss, a lintel guide rail, a robotic arm and a rotatable mechanical clamping claw, the lintel guide rail is installed on the truss and is located above the material rotating platform, the robotic arm can be slidably installed on the lintel guide rail, and the robotic arm is provided with a rotatable mechanical clamping claw.

[0009] In the above-mentioned intelligent turning unit for high-precision complex thin-walled parts, the distance between adjacent insert discs on the material rotating platform is variable.

[0010] The above-mentioned high-precision complex thin-walled parts intelligent turning unit adopts a Renishaw probe as the in-machine detection module.

[0011] The beneficial effects of the present invention are: the present invention interactively integrates the control systems of various units such as the loading and unloading unit, optical positioning detection module, flipping and unloading module, truss robot unit, dual-spindle automatic processing unit, airtight detection module, in-machine detection module and automatic compensation module to realize fully automated processing of the head, which has the characteristics of single-person operation and easy use. The inner hole and outer shape processes of the part are completed by one clamping, ensuring the coaxiality of the inner and outer ellipsoidal surfaces; the outer ellipsoid and spherical inner groove processing of the part are completed by one tool pass, ensuring the wall thickness accuracy requirements, greatly improving production efficiency, reducing labor intensity, saving costs for enterprise production, and improving enterprise production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 for Figure 1 Left view of .

[0014] Figure 3 for Figure 1 Top view of .

[0015] Figure 4 for Figure 1 Schematic diagram of the main structure of the loading and unloading unit.

[0016] Figure 5 for Figure 4 side view.

[0017] Figure 6 for Figure 4 Top view of .

[0018] Figure 7 for Figure 1 A three-dimensional view of the loading and unloading unit.

[0019] Figure 8 for Figure 1 Schematic diagram of the structure of the mid-truss robot unit.

[0020] Figure 9 for Figure 1 Schematic diagram of the structure of the rotatable mechanical claw.

[0021] Figure 10 for Figure 1 Schematic diagram of the structure of the mid-unloading turnover module.

[0022] Figure 11 for Figure 1 Measurement diagram of the in-machine detection module. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] like Figure 1-Figure 3 As shown, a high-precision complex thin-walled parts intelligent turning unit includes a loading and unloading unit 1 for loading and unloading processing parts; a dual-spindle automatic machining unit 11 for automatically reversing turning processing of processing parts; a truss robot unit 2 arranged between the loading and unloading unit 1 and the dual-spindle automatic machining unit 11 for transporting processing parts; an in-machine detection module 9 arranged in the dual-spindle automatic machining unit 11 for measuring the size of processing parts; an automatic compensation module arranged in the dual-spindle automatic machining unit 11 for adjusting the processing amount; a PLC control system 12 respectively connected to the loading and unloading unit 1, the dual-spindle automatic machining unit 11, the truss robot unit 2, the in-machine detection module 9, and the automatic compensation module for controlling the entire processing process.

[0025] The dual-spindle automatic machining unit 11 adds a sub-spindle on the basis of the existing lathe equipment, and can perform auxiliary machining through the sub-spindle to ensure the coaxiality of the inner and outer ellipsoidal surfaces of the machined part head 6.

[0026] like Figure 4-Figure 7 As shown, the loading and unloading unit 1 is used for stacking semi-finished blanks and finished parts. It includes a rotating material platform 13, an optical positioning detection module 7, and a flipping unloading module 5. A plurality of insert trays 14 are arranged in a ring on the rotating material platform 13. The insert trays 14 move along a predetermined circular trajectory with the rotating material platform 13, and the processed parts are placed on the insert trays 14. By adjusting the distance between adjacent insert trays 14 on the rotating material platform 13, it can accommodate processed parts of different specifications. The flipping unloading module 5 is located above the insert trays 14 and is fixedly mounted on the rotating material platform 13. The rotating material platform 13 is equipped with an ejection mechanism for lifting the insert trays 14 upward and an optical positioning detection module 7 for measuring whether the processed parts on the insert trays 14 have reached the specified position. The ejection mechanism can be a jack or other mechanism that can achieve upward lifting.

[0027] The optical positioning detection module 7 employs two sets of laser sensors: one for detecting whether the insert tray containing the parts has rotated to a predetermined area, and the other for detecting whether the ejection mechanism containing the parts has been raised to a designated position. When the workpiece blank placed on the insert tray 14 enters the predetermined area along the track and blocks the signal light source, the rotating platform 13 stops rotating. Subsequently, the ejection mechanism lifts the insert tray 14 and the workpiece upward to a predetermined height, blocking the signal light source and causing the ejection mechanism of the rotating platform 13 to stop raising.

[0028] like Figure 10 As shown, the flipping and unloading module 5 includes a robotic claw and a motor. The motor is connected to the robotic claw to drive the robotic claw to flip 180 degrees, completing the reversing transfer of the processed parts between the truss robot unit 2 and the loading and unloading unit 1.

[0029] like Figure 8 As shown, the truss robot unit 2 includes a truss 16, a lintel guide rail 17, a robot arm 3 and a rotatable mechanical claw 4. The lintel guide rail 17 is installed on the truss 16 and is located above the material rotating platform 13. The robot arm 3 is slidably installed on the lintel guide rail 17. The robot arm 3 is provided with a rotatable mechanical claw 4. The structure of the rotatable mechanical claw 4 is as shown in FIG. Figure 9 shown.

[0030] The in-machine detection module 9 adopts a Renishaw probe 18. The Renishaw probe 18 is installed on the machine tool turret through a connecting seat and screws, occupying one tool position. After the part processing is completed, the controller of the dual-spindle automatic machining unit 11 sends a signal to the in-machine detection module 9, and the Renishaw probe 18 realizes the inner and outer diameter measurement of the main and secondary spindle parts according to the preset path. Assuming the initial position of the probe is the zero point of the measurement system coordinate, the Renishaw probe 18 generates a number of new coordinates when it moves to contact the surface of the part to be measured. The coordinate data measured by the Renishaw probe 18 is sent to the receiving device 19 in real time, and is sent to the controller of the dual-spindle automatic machining unit 11 through the receiving device 19. The controller of the dual-spindle automatic machining unit 11 calculates the relative displacement through the two coordinates and fits the inner and outer diameter size values ​​of the part.

[0031] Brief description of the automatic compensation module workflow: The inner and outer diameter measurement values ​​of the part generated by the in-machine detection module 9 are compared with the preset values ​​in the CNC program, and automatic compensation is performed for the deviation amount that exceeds the preset value threshold.

[0032] The working principle of the present invention is as follows:

[0033] The blanks of the head 6 to be processed are manually stacked in order and placed on the inserting plate 14 of the material rotating platform 13. After the start signal is input, the material rotating platform 13 drives the chain to run according to a predetermined circular trajectory through the driving motor.

[0034] When the blank of the head 6 placed on the inserting plate 14 enters the predetermined area along the track and blocks the signal light source, the optical positioning detection module 7 sends a signal to the PLC control system 12, and the PLC control system 12 controls the material rotating platform 13 to stop rotating; then, the ejection mechanism drives the inserting plate 14 and the head 6 to rise to a predetermined height and blocks the signal light source. Figure 7 the optical positioning detection module 7 again sends a signal to the PLC control system 12, and the PLC control system 12 controls the ejection mechanism of the material rotating platform 13 to stop lifting.

[0035] After the PLC control system 12 transmits the stop lifting signal of the ejection mechanism of the loading and unloading unit 1 to the truss robot unit 2, the truss robot unit 2 receives the instruction, drives the robotic arm 3 to move along the lintel guide rail 17 to above the insert plate 14, grabs the head 6 with the rotatable mechanical claw 4, and transfers it to the inside of the dual-spindle automatic processing unit 11.

[0036] The head 6 blank clamped on the rotatable mechanical claw 4 is adjusted by the motor drive of the truss robot unit 2 to the position where the center line of the head 6 blank is aligned with the center line of the turning spindle, and then moved horizontally to the spindle chuck reference surface close to the dual-spindle automatic machining unit 11. The PLC control system 12 drives the spindle chuck of the dual-spindle automatic machining unit 11 to clamp, the rotatable mechanical claw 4 is moved out, and the hatch of the dual-spindle automatic machining unit 11 is closed.

[0037] After the spindle parts processing is completed, the PLC control system 12 drives the sub-spindle of the dual-spindle automatic processing unit 11 to move horizontally along the machine tool guide rail, dock with the spindle head 6, and then return to its original position.

[0038] The end face of the head 6 fits into the vent hole of the fixture, and the air source pressurizes the inside of the fixture. When the pressure signal reaches the set value, a communication command is sent to the machine tool. The in-machine detection module 9 measures the size of the semi-finished product of the head 6, and allocates the process allowance according to the algorithm, automatically adjusts the CNC program, and the head 6 starts processing.

[0039] After the parts are processed, according to the preset program flow, the in-machine detection module 9 is started again to measure the size of the head 6. The automatic compensation module automatically corrects the tool compensation according to the preset value to accurately control the part size accuracy.

[0040] After the PLC control system 12 receives the signal that the processing of the head 6 is completed, it drives the dual-spindle automatic processing unit 11 to open the hatch and transmits a grabbing signal to the truss robot unit 2. The rotatable mechanical claw 4 extends into the interior of the machine tool, grabs the head 6, and places it on the flip unloading module 5 of the loading and unloading unit 1.

[0041] The flipping and unloading module 5 drives the mechanical claw to flip 180 degrees through the motor, completing the reversing transfer of the head 6 between the truss robot unit 2 and the loading and unloading unit 1. At this point, the entire processing flow of the head 6 is completed.

Claims

1. A high-precision intelligent turning unit for complex thin-walled parts, characterized by: It includes a loading and unloading unit for loading and unloading parts; a dual-spindle automatic machining unit for automatically reversing and turning parts; a truss robot unit arranged between the loading and unloading unit and the dual-spindle automatic machining unit for transporting parts for processing; an in-machine detection module arranged in the dual-spindle automatic machining unit for measuring the dimensions of the processed parts; an automatic compensation module arranged in the dual-spindle automatic machining unit for adjusting the processing amount; and a PLC control system connected to the loading and unloading unit, the dual-spindle automatic machining unit, the truss robot unit, the in-machine detection module, and the automatic compensation module respectively for controlling the entire processing process; The loading and unloading unit includes a material rotating platform, an optical positioning detection module, and a flip unloading module. A plurality of inserting trays are distributed in a ring on the material rotating platform. The inserting trays move along a predetermined ring track with the material rotating platform. The processed parts are placed on the inserting trays. A flip unloading module is provided above the inserting trays. The flip unloading module is fixedly mounted on the material rotating platform. The material rotating platform is provided with an ejection mechanism for lifting the inserting tray upward and an optical positioning detection module for measuring whether the processed parts on the inserting tray have reached a specified position. The truss robot unit includes a truss, a lintel guide rail, a robotic arm and a rotatable mechanical claw. The lintel guide rail is installed on the truss and is located above the material rotating platform. The robotic arm is slidably installed on the lintel guide rail and is provided with a rotatable mechanical claw. The blanks to be processed are manually stacked in order and placed on the insert plate of the material rotating platform. After the start signal is input, the material rotating platform drives the chain through the drive motor to run along the predetermined circular trajectory. When the blank head placed on the insert plate enters the predetermined area along the track and blocks the signal light source, the optical positioning detection module sends a signal to the PLC control system, which controls the material rotating platform to stop rotating. Subsequently, the ejection mechanism drives the insert plate and the blank head upward to a predetermined height, after which the signal light source is blocked. The optical positioning detection module sends a signal to the PLC control system again, which controls the ejection mechanism of the material rotating platform to stop lifting. After the PLC control system transmits the stop lifting signal of the ejection mechanism of the loading and unloading unit to the truss robot unit, the truss robot unit receives the command, drives the robotic arm to move along the lintel guide rail to the top of the insertion plate, grabs the head with a rotatable mechanical claw, and transfers it to the inside of the dual-spindle automatic processing unit; The head blank clamped on the rotatable mechanical clamping claw is adjusted by the motor of the truss robot unit to the position where the center line of the head blank is aligned with the center line of the turning spindle. Then, it is moved horizontally to the reference surface of the spindle chuck of the dual-spindle automatic machining unit. The PLC control system drives the spindle chuck of the dual-spindle automatic machining unit to clamp, the rotatable mechanical clamping claw is moved out, and the hatch of the dual-spindle automatic machining unit is closed. After the spindle parts processing is completed, the PLC control system drives the sub-spindle of the dual-spindle automatic processing unit to move horizontally along the machine tool guide rail, dock with the spindle head, and then return to its original position; The end face of the head fits against the vent hole of the fixture, and the air source pressurizes the interior of the fixture. When the pressure signal reaches the set value, a communication command is sent to the machine tool. The in-machine detection module measures the size of the semi-finished head, allocates the process allowance according to the algorithm, and automatically adjusts the CNC program to start the head processing. After the parts are processed, the machine will start the detection module to measure the head size according to the preset program flow. The automatic compensation module will automatically correct the tool compensation according to the preset value to accurately control the part size accuracy. After receiving the signal that the head processing is completed, the PLC control system drives the dual-spindle automatic processing unit to open the hatch and transmits the grabbing signal to the truss robot unit. The rotating mechanical claw extends into the machine tool, grabs the head, and places it on the flip unloading module of the loading and unloading unit. The flipping and unloading module drives the mechanical claw to flip 180 degrees through the motor, completing the reversing transfer of the head between the truss robot unit and the loading and unloading unit. At this point, the entire processing flow of the head is completed.

2. The high-precision complex thin-walled parts intelligent turning unit according to claim 1 is characterized in that: The flipping and unloading module includes a robotic claw and a motor. The motor is connected to the robotic claw to drive the robotic claw to flip 180 degrees, completing the reversing transfer of processed parts between the truss robot unit and the loading and unloading unit.

3. The high-precision complex thin-walled parts intelligent turning unit according to claim 1 is characterized in that: The optical positioning detection module adopts a laser sensor.

4. The high-precision complex thin-walled parts intelligent turning unit according to claim 1 is characterized in that: The distance between adjacent inserting discs on the material rotating platform is variable.

5. The high-precision complex thin-walled parts intelligent turning unit according to claim 1 is characterized in that: The in-machine inspection module adopts a Renishaw probe.

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