Large curved-surface thin-wall part mirror image machining equipment and control method

Abstract

The invention discloses mirror image machining equipment for a large curved-surface thin-wall part and a control method. In the equipment, a machining positioning assembly is arranged on one side of a clamp assembly and comprises a machining base, a movable machining platform installed on the machining base and a parallel machining positioning device installed on the movable machining platform, and the movable machining platform is used for driving the parallel machining positioning device in the X-axis direction, the Y-axis direction and the Z-axis direction; the machining device is mounted on the machining parallel positioning device; the supporting and positioning assembly is arranged on the other side of the clamp assembly and comprises a supporting base, a supporting movable platform installed on the supporting base and a parallel positioning device installed on the supporting movable platform, and the supporting movable platform is used for driving and supporting the parallel positioning device in the X-axis direction, the Y-axis direction and the Z-axis direction; and the supporting device is mounted on the supporting parallel positioning device. The method is suitable for mirror milling and incremental forming of the large curved-surface thin-wall part, and has the advantages of high adaptability, high operation flexibility, high machining precision and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of large aerospace equipment part processing, and particularly to a mirror machining equipment and control method for large curved thin-walled parts. Background Art

[0002] High-end manufacturing industries represented by aviation and aerospace reflect the core competitiveness and major demands of a country's science and technology. Large curved thin-walled parts are important components in aerospace carrier equipment and are the key to achieving equipment lightweight and high performance. Typical large thin-walled curved parts include rocket fuel tanks, aircraft skin panels, spacecraft cabins, etc. Such parts have the characteristics of large size, complex geometric shapes, and low overall stiffness. At the same time, they have high requirements for machining accuracy and efficiency, so their machining and manufacturing are difficult.

[0003] For the machining of large curved thin-walled parts, if direct milling is carried out, it will cause large deformation and vibration of the parts and low machining accuracy. Especially when machining thin-walled parts with high equal wall thickness requirements, uneven wall thickness is likely to occur. Therefore, equal wall thickness machining has become an important problem in the machining of large thin-walled curved parts.

[0004] For the machining of some large curved thin-walled parts with complex features, if die production is adopted, a large amount of economic and time costs will be incurred for die design and manufacturing. Moreover, the aerospace carrier equipment system is complex, and the number of parts with different structures is huge, and it is impossible to equip all with dies. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a mirror machining equipment for large curved thin-walled parts, which is applicable to mirror milling and incremental forming machining of large curved thin-walled parts and has the advantages of strong adaptability, high operation flexibility, and high machining accuracy.

[0006] The mirror machining equipment for large curved thin-walled parts according to an embodiment of the present invention includes a fixture assembly, a machining positioning assembly, a machining device, a support positioning assembly, and a support device;

[0007] Among them, the fixture assembly is used to fix the part to be machined;

[0008] The machining positioning assembly is arranged on one side of the fixture assembly and includes a machining base, a machining moving platform installed on the machining base, and a machining parallel positioning device installed on the machining moving platform. The machining moving platform is used to drive the machining parallel positioning device in the X-axis direction, Y-axis direction, and Z-axis directions;

[0009] The processing device is installed on the processing parallel positioning device, and the processing parallel positioning device is used for fine pose adjustment of the processing device in multiple degrees of freedom. The processing device is applied to mirror milling processing or incremental forming processing;

[0010] The support positioning assembly is arranged on the other side of the fixture assembly, and includes a support base, a support moving platform installed on the support base, and a support parallel positioning device installed on the support moving platform. The support moving platform is used to drive the support parallel positioning device in the X-axis direction, Y-axis direction, and Z-axis direction;

[0011] The support device is installed on the support parallel positioning device, and the support parallel positioning device is used for fine pose adjustment of the support device in multiple degrees of freedom. The support device is applied to mirror milling support or incremental forming support.

[0012] For the large curved surface thin-walled part mirror processing equipment according to the embodiment of the present invention, the position of the processing device on the to-be-processed surface of the to-be-processed part and the distance from the to-be-processed surface of the to-be-processed part can be adjusted through the processing moving platform; fine pose adjustment of the processing device in multiple degrees of freedom can be realized through the processing parallel positioning device; the position of the support device on the to-be-supported surface of the to-be-processed part and the distance from the to-be-supported surface of the to-be-processed part can be adjusted through the support moving platform; fine pose adjustment of the support device in multiple degrees of freedom can be realized through the support parallel positioning device. Thus, during the processing process of the processing device, the axis of the support device can be kept coincident with the axis of the processing device, and the relative distance between the support device and the processing device can be kept constant, so as to use the support device to maintain the support of the processing position of the processing device, avoid deformation of the to-be-processed part with the characteristics of a large curved surface thin wall, and ensure that the processing accuracy of the thin wall thickness of the to-be-processed part meets the process requirements.

[0013] Moreover, by using the multi-axis parallel processing parallel positioning device to realize the positioning of the processing device and by using the multi-axis parallel support parallel positioning device to realize the positioning of the support device, compared with the processing methods in the traditional related technologies, the large curved surface thin-walled part mirror processing equipment according to the embodiment of the present invention has higher adaptability to the working space and environment in the mirror milling processing and incremental forming processing of the outer grid features of the large curved surface thin-walled part, improves the flexibility of the processing operation, and is convenient for ensuring the processing accuracy.

[0014] In some embodiments, the processing moving platform includes a processing X-axis direction moving platform, a processing Y-axis direction moving platform, and a processing Z-axis direction moving platform; a processing X-axis direction track is provided on the processing base, the processing X-axis direction moving platform is slidably arranged on the processing X-axis direction track, the processing Y-axis direction moving platform is slidably arranged on the processing X-axis direction moving platform and the sliding direction is perpendicular to the moving direction of the processing X-axis direction moving platform, the processing Z-axis direction moving platform is slidably arranged on the processing Y-axis direction moving platform and the sliding direction is perpendicular to the moving directions of the processing X-axis direction moving platform and the processing Y-axis direction moving platform, and the processing parallel positioning device is installed on the processing Z-axis direction moving platform;

[0015] The support moving platform includes a support X-axis direction moving platform, a support Y-axis direction moving platform, and a support Z-axis direction moving platform; a support X-axis direction track is provided on the support base, the support X-axis direction moving platform is slidably arranged on the support X-axis direction track, the support Y-axis direction moving platform is slidably arranged on the support X-axis direction moving platform and the sliding direction is perpendicular to the moving direction of the support X-axis direction moving platform, the support Z-axis direction moving platform is slidably arranged on the support Y-axis direction moving platform and the sliding direction is perpendicular to the moving directions of the support Y-axis direction moving platform and the support Z-axis direction moving platform, and the support parallel positioning device is installed on the support Z-axis direction moving platform.

[0016] In some embodiments, the processing positioning assembly further includes a processing X-axis direction driving device for driving the processing X-axis direction moving platform, a processing Y-axis direction driving device for driving the processing Y-axis direction moving platform, and a processing Z-axis direction driving device for driving the processing Y-axis direction moving platform; the support positioning assembly further includes a support X-axis direction driving device for driving the support X-axis direction moving platform, a support Y-axis direction driving device for driving the support Y-axis direction moving platform, and a support Z-axis direction driving device for driving the support Z-axis direction moving platform.

[0017] In some embodiments, the processing X-axis direction driving device includes a processing X-axis direction driving motor, a processing X-axis direction driving gear, and a processing X-axis direction rack, the processing X-axis direction driving motor is installed on the processing X-axis direction moving platform, the processing X-axis direction driving gear is fixedly connected to the X-axis direction driving motor, and the processing X-axis direction rack is installed on the processing base and is drivingly connected to the processing X-axis direction driving gear;

[0018] The processing Y-axis direction driving device includes a processing Y-axis direction driving motor, a processing Y-axis direction driving lead screw, and a processing Y-axis direction driving nut. The processing Y-axis direction driving motor can be vertically installed on the processing X-axis direction moving platform. The processing Y-axis direction driving motor is in transmission connection with the processing Y-axis direction driving lead screw. The processing Y-axis direction driving lead screw is in threaded fit with the processing Y-axis direction driving nut. The processing Y-axis direction driving nut can be vertically installed on the processing Y-axis direction moving platform;

[0019] The processing Z-axis direction driving device includes a processing Z-axis direction driving motor, a processing Z-axis direction driving lead screw, and a processing Z-axis direction driving nut. The processing Z-axis direction driving motor can be vertically installed on the processing Y-axis direction moving platform. The processing Z-axis direction driving motor is in transmission connection with the processing Z-axis direction driving lead screw. The processing Z-axis direction driving lead screw is in threaded fit with the processing Z-axis direction driving nut. The processing Z-axis direction driving nut can be vertically installed on the processing Z-axis direction moving platform.

[0020] In some embodiments, the support X-axis direction driving device includes a support X-axis direction driving motor, a support X-axis direction driving gear, and a support X-axis direction rack. The support X-axis direction driving motor is installed on the support X-axis direction moving platform. The support X-axis direction driving gear is fixedly connected to the X-axis direction driving motor. The support X-axis direction rack is installed on the support base and is in driving connection with the support X-axis direction driving gear;

[0021] The support Y-axis direction driving device includes a support Y-axis direction driving motor, a support Y-axis direction driving lead screw, and a support Y-axis direction driving nut. The support Y-axis direction driving motor can be vertically installed on the support X-axis direction moving platform. The support Y-axis direction driving motor is in transmission connection with the support Y-axis direction driving lead screw. The support Y-axis direction driving lead screw is in threaded fit with the support Y-axis direction driving nut. The support Y-axis direction driving nut can be vertically installed on the support Y-axis direction moving platform;

[0022] The support Z-axis direction driving device includes a support Z-axis direction driving motor, a support Z-axis direction driving lead screw, and a support Z-axis direction driving nut. The support Z-axis direction driving motor can be vertically installed on the support Y-axis direction moving platform. The support Z-axis direction driving motor is in transmission connection with the support Z-axis direction driving lead screw. The support Z-axis direction driving lead screw is in threaded fit with the support Z-axis direction driving nut. The support Z-axis direction driving nut can be vertically installed on the support Z-axis direction moving platform.

[0023] In some embodiments, the machining parallel positioning device includes a machining parallel positioning bracket and a plurality of machining chains; the machining parallel positioning bracket is connected to the machining Z-axis direction moving platform, and the machining chains are respectively connected to the machining parallel positioning bracket and the machining device;

[0024] The support parallel positioning device includes a support parallel positioning bracket and a plurality of support chains; the support parallel positioning bracket is connected to the support Z-axis direction moving platform, and the support chains are respectively connected to the support parallel positioning bracket and the support device.

[0025] In some embodiments, the machining chain includes a machining hollow motor and a machining ball screw. The machining hollow motor is in transmission connection with the machining ball screw, and drives the machining ball screw to rotate along the central axis and move axially through the rotation of the machining hollow motor. The machining hollow motor is connected to the machining parallel positioning bracket through a first machining hinge, and the machining ball screw is connected to the machining device through a second machining hinge; the number of the machining chains is six, five or three; when the number of the machining chains is six, all six of the second machining hinges are double-rotation pair hinges, and all six of the first machining hinges are double-rotation pair hinges; when the number of the machining chains is five, four of the five second machining hinges are double-rotation pair hinges and one is a single-rotation pair hinge, and all five of the first machining hinges are double-rotation pair hinges; when the number of the machining chains is three, all three of the second machining hinges are double-rotation pair hinges and all three of the first machining hinges are single-rotation pair hinges, or all three of the second machining hinges are single-rotation pair hinges and all three of the first machining hinges are double-rotation pair hinges.

[0026] In some embodiments, the support chain includes a support hollow motor and a support ball screw. The support hollow motor is in transmission connection with the support ball screw, and drives the support ball screw to rotate along the central axis and move axially through the rotation of the support hollow motor. The support hollow motor is connected to the support parallel positioning bracket through a first support hinge, and the support ball screw is connected to the support device through a second support hinge; the number of the support chains is six, five or three; when the number of the support chains is six, all six of the second support hinges are double-rotation pair hinges, and all six of the first support hinges are double-rotation pair hinges; when the number of the support chains is five, four of the five second support hinges are double-rotation pair hinges and one is a single-rotation pair hinge, and all five of the first support hinges are double-rotation pair hinges; when the number of the support chains is three, all three of the second support hinges are double-rotation pair hinges and all three of the first support hinges are single-rotation pair hinges, or all three of the second support hinges are single-rotation pair hinges and all three of the first support hinges are double-rotation pair hinges.

[0027] In some embodiments, the machining device includes a machining motor spindle, a first machining tool holder, and a machining tool used for mirror milling; the machining motor spindle is installed on the machining parallel positioning device, the first machining tool holder is installed on the machining motor spindle, and the machining tool is installed on the first machining tool holder;

[0028] or the machining device includes a machining tool holder base, a second machining tool holder, and a main tool used for incremental forming; the machining tool holder base is installed on the machining parallel positioning device, the second machining tool holder is installed on the machining tool holder base, and the main tool is installed on the second machining tool holder.

[0029] In some embodiments, the supporting device includes a supporting head base, a supporting head used for mirror milling, and a wall thickness measuring device; the supporting head base is installed on the supporting parallel positioning device, the supporting head is installed on the supporting head base, and the wall thickness measuring device is installed on the supporting head; or the supporting device includes a supporting tool holder base, a supporting tool holder, and a subordinate tool used for incremental forming, the supporting tool holder base is installed on the supporting parallel positioning device, the supporting tool holder is installed on the supporting tool holder base, and the subordinate tool is installed on the supporting tool holder.

[0030] In some embodiments, the fixture assembly includes a fixture base and a fixture device; the fixture device is slidably installed on the fixture base and includes a fixture fixed beam, a telescopic fixture arm, and a fixture head; the fixture fixed beam is installed on the fixture base, the telescopic fixture arm is installed on the fixture fixed beam, and the fixture head is installed on the telescopic fixture arm for fixing the part to be machined.

[0031] On the other hand, the present invention also proposes a control method for the above-mentioned large curved surface thin-walled part mirror machining equipment.

[0032] The control method for the large curved surface thin-walled part mirror machining equipment according to the embodiments of the present invention includes the following steps:

[0033] S1: Install the part to be machined on the fixture assembly;

[0034] S2: Drive the machining device through the machining positioning assembly to position the machining device on the surface to be machined of the part to be machined;

[0035] S3: Drive the supporting device through the supporting positioning assembly to position the supporting device on the surface to be supported of the part to be machined, and make the axis of the supporting device coincide with the axis of the machining device;

[0036] S4: By measuring the wall thickness at the machining position of the part to be machined, and based on the difference between the measured wall thickness and the target wall thickness, calculate the relative motion relationship between the machining device and the support device;

[0037] S5: Through the machining positioning assembly and the support positioning assembly, drive the machining device and the support device in real-time correspondence according to the calculated relative motion relationship information, so that the relative distance between the machining device and the support device meets the distance requirements for machining the corresponding wall thickness, and complete the machining of the surface of the part to be machined;

[0038] S6: By measuring the wall thickness at the machining position of the part to be machined in real-time, if the measured wall thickness has not reached the target wall thickness, adjust the relative motion relationship between the machining device and the support device, repeat S5 and S6 until the measured wall thickness meets the requirements. If the measured wall thickness meets the requirements, perform the machining at the next position of the surface to be machined, and repeat S2 to S6 until the machining of the surface of the part to be machined is completed.

[0039] According to the control method of the large curved surface thin-walled part mirror machining equipment according to the embodiments of the present invention, by using the large curved surface thin-walled part mirror machining equipment according to the above embodiments of the present invention, it has the advantages of strong adaptability, high operation flexibility, and high machining accuracy.

[0040] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0041] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0042] Figure 1 is a schematic structural diagram of a large curved surface thin-walled part mirror machining equipment according to an embodiment of the present invention.

[0043] Figure 2 is a schematic structural diagram of the machining positioning assembly of a large curved surface thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0044] Figure 3 is a schematic structural diagram of the machining parallel positioning device of the machining positioning assembly of a large curved surface thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0045] Figure 4 is a schematic structural diagram of the machining parallel positioning device of the machining positioning assembly of a large curved surface thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0046] Figure 5It is a schematic structural diagram of a machining parallel positioning device of a machining positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0047] Figure 6 It is a schematic structural diagram of a machining parallel positioning device of a machining positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0048] Figure 7 It is a schematic structural diagram of a machining parallel positioning device of a machining positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0049] Figure 8 It is a schematic structural diagram of a support positioning component of a large curved thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0050] Figure 9 It is a schematic structural diagram of a support parallel positioning device of a support positioning component of a large curved thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0051] Figure 10 It is a schematic structural diagram of a support parallel positioning device of a support positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0052] Figure 11 It is a schematic structural diagram of a support parallel positioning device of a support positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0053] Figure 12 It is a schematic structural diagram of a support parallel positioning device of a support positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0054] Figure 13 It is a schematic structural diagram of a support parallel positioning device of a support positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0055] Figure 14 It is a schematic structural diagram of a machining device for mirror milling of a machining positioning component of a large curved thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0056] Figure 15 It is a schematic structural diagram of a machining device for incremental forming of a machining positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0057] Figure 16It is a schematic structural diagram of a support device for contact support in mirror milling of a support and positioning component of a large curved thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0058] Figure 17 It is a schematic structural diagram of a support device for hydraulic pressure support in mirror milling of a support and positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0059] Figure 18 It is a schematic structural diagram of a support device for incremental forming machining of a support and positioning component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0060] Figure 19 It is a schematic structural diagram of a fixture device of a fixture component of a large curved thin-walled part mirror machining equipment according to a specific embodiment of the present invention.

[0061] Figure 20 It is a schematic structural diagram of a fixture device of a fixture component of a large curved thin-walled part mirror machining equipment according to another specific embodiment of the present invention.

[0062] Figure 21 It is a flowchart of a control method for a large curved thin-walled part mirror machining equipment according to an embodiment of the present invention.

[0063] Reference numerals:

[0064] Large curved surface thin-walled part mirror machining equipment 1; Fixture base 100; Fixture device 200; Fixture fixing beam 210; Telescopic fixture arm 220; Fixture head 230; Machining positioning component 300; Machining base 310; Machining X-axis direction track 311; Machining X-axis direction moving platform 320; Machining X-axis direction driving motor 321; Machining X-axis direction driving gear 322; Machining X-axis direction rack 323; Machining Y-axis direction moving platform 330; Machining Y-axis direction track 331; Machining Y-axis direction driving motor 332; Machining Y-axis direction driving lead screw 333; Machining Y-axis direction driving nut 334; Machining Z-axis direction moving platform 340; Machining Z-axis direction track 341; Machining Z-axis direction driving motor 342; Machining Z-axis direction driving lead screw 343; Machining Z-axis direction driving nut 344; Machining parallel positioning device 350; Machining parallel positioning bracket 351; Machining branch chain 352; Machining hollow motor 3521; Machining ball screw 3522; First machining hinge 3503; Second machining hinge 354; Machining device 500; Machining motor spindle 510; First machining tool holder 520; Machining tool 530 used for mirror milling machining; Machining tool holder base 540; Second machining tool holder 560; Main tool 560 used for incremental forming machining; Support positioning component 600; Support base 610; Support X-axis direction track 611; Support X-axis direction moving platform 620; Support X-axis direction driving motor 621; Support X-axis direction driving gear 622; Support X-axis direction rack 623; Support Y-axis direction moving platform 630; Support Y-axis direction track 631; Support Y-axis direction driving motor 632; Support Y-axis direction driving lead screw 633; Support Y-axis direction driving nut 634; Support Z-axis direction moving platform 640; Support Z-axis direction track 641; Support Z-axis direction driving motor 642; Support Z-axis direction driving lead screw 643; Support Z-axis direction driving nut 644; Support parallel positioning device 650; Support parallel positioning bracket 651; Support branch chain 652; Support hollow motor 6521; Support ball screw 6522; First support hinge 653; Second support hinge 654; Support device 700; Support head base 710; Support head 720; Support tool holder base 730, Support tool holder 740, Subordinate tool 750 used for incremental forming; Wall thickness measuring device 760; Part to be machined 2. Detailed implementation manners

[0065] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0066] The following combination with Figures 1 to 21Describe the large curved surface thin-walled part mirror machining equipment 1 and control method of the embodiments of the present invention.

[0067] As Figures 1 - 20 shown, the large curved surface thin-walled part mirror machining equipment 1 according to the embodiments of the present invention includes a fixture assembly, a machining positioning assembly 300, a machining device 500, a support positioning assembly 600, and a support device 700.

[0068] Among them, the fixture assembly is used to fix the part to be machined 2, and the part to be machined 2 here refers to a large curved surface thin-walled part.

[0069] The machining positioning assembly 300 is arranged on one side of the fixture assembly and includes a machining base 310, a machining moving platform, and a machining parallel positioning device 350. The machining moving platform is installed on the machining base 310, and the machining parallel positioning device 350 is installed on the machining moving platform. The machining moving platform is used to drive the machining parallel positioning device 350 in the X-axis direction, Y-axis direction, and Z-axis direction.

[0070] The machining device 500 is installed on the machining parallel positioning device 350. The machining parallel positioning device 350 is used for fine pose adjustment of the machining device 500 in multiple degrees of freedom. The machining device 500 is applied to mirror milling machining or incremental forming machining.

[0071] The support positioning assembly 600 is arranged on the other side of the fixture assembly and includes a support base 610, a support moving platform, and a support parallel positioning device 650. The support moving platform is installed on the support base 610, and the support parallel positioning device 650 is installed on the support moving platform. The support moving platform is used to drive the support parallel positioning device 650 in the X-axis direction, Y-axis direction, and Z-axis direction.

[0072] The support device 700 is installed on the support parallel positioning device 650. The support parallel positioning device 650 is used for fine pose adjustment of the support device 700 in multiple degrees of freedom. The support device 700 is applied to mirror milling support or incremental forming support.

[0073] The large curved surface thin-walled part mirror machining equipment 1 according to the embodiment of the present invention can adjust the position of the machining device 500 on the surface to be machined of the part to be machined 2 and the distance from the surface to be machined of the part to be machined 2 through the machining moving platform; the machining parallel positioning device 350 can realize the fine pose adjustment of the machining device 500 in multiple degrees of freedom; the support moving platform can adjust the position of the support device 700 on the surface to be supported of the part to be machined 2 and the distance from the surface to be supported of the part to be machined 2; the support parallel positioning device 650 can realize the fine pose adjustment of the support device 700 in multiple degrees of freedom. Thus, during the machining process of the machining device 500, the axis of the support device 700 can be kept coincident with the axis of the machining device 500, and the relative distance between the support device 700 and the machining device 500 can be kept constant, so as to use the support device 700 to support the machining position of the machining device 500, avoid the deformation of the part to be machined 2 with the characteristics of large curved surface thin wall, and ensure that the machining accuracy of the thin wall thickness of the part to be machined 2 meets the process requirements.

[0074] Moreover, by using the multi-axis parallel machining parallel positioning device 350 to realize the positioning of the machining device 500 and using the multi-axis parallel support parallel positioning device 650 to realize the positioning of the support device 700, compared with the machining methods in the traditional related technologies, the large curved surface thin-walled part mirror machining equipment 1 according to the embodiment of the present invention has higher adaptability to the working space and environment in the mirror milling machining and incremental forming machining of the outer grid features of the large curved surface thin-walled part, improves the flexibility of the machining operation, and is convenient to ensure the machining accuracy.

[0075] The large curved surface thin-walled part mirror machining equipment 1 according to the specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0076] In some embodiments, as Figures 1 to 20 shown, the fixture assembly includes a fixture base 100 and a fixture device 200. The fixture device 200 is slidably mounted on the fixture base 100 through the X-axis horizontal track of the fixture base 100, and the fixture device 200 is used to fix the part to be machined 2. During use, the fixture device 200 can be detached from the fixture base 100 to fix the large curved surface thin-walled part of the part to be machined 2, and then slidably mounted on the fixture base 100 through the X-axis horizontal track of the fixture base 100, which is convenient for the fixture assembly to fix the large curved surface thin-walled part.

[0077] The machining positioning assembly 300 includes a machining base 310, a machining moving platform, and a machining parallel positioning device 350. Among them, the machining base 310 is arranged on one side of the fixture base 100, and a machining X-axis direction track 311 parallel to the X-axis horizontal track of the fixture base 100 is provided on the machining base 310; the machining moving platform includes a machining X-axis direction moving platform 320, a machining Y-axis direction moving platform 330, and a machining Z-axis direction moving platform 340. The machining X-axis direction track 311 is provided on the machining base 310, and the machining X-axis direction moving platform 320 is slidably arranged on the machining X-axis direction track 311. The machining Y-axis direction moving platform 330 is slidably arranged on the machining X-axis direction moving platform 320, and the sliding direction of the machining Y-axis direction moving platform 330 is perpendicular to the moving direction of the machining X-axis direction moving platform 320. The machining Z-axis direction moving platform 340 is slidably arranged on the machining Y-axis direction moving platform 330, and the sliding direction of the machining Z-axis direction moving platform 340 is perpendicular to the moving directions of the machining X-axis direction moving platform 320 and the machining Y-axis direction moving platform 330. The machining parallel positioning device 350 is installed on the machining Z-axis direction moving platform 340.

[0078] The machining device 500 is installed on the machining parallel positioning device 350, and different types of machining devices are respectively applied to mirror milling machining and incremental forming machining.

[0079] The support positioning assembly 600 includes a support base 610, a support moving platform, and a support parallel positioning device 650. Among them, the support base 610 is arranged on the other side of the fixture base 100, and a support X-axis direction track 611 parallel to the X-axis horizontal track of the fixture base 100 is provided on the support base 610; the support moving platform includes a support X-axis direction moving platform 620, a support Y-axis direction moving platform 630, and a support Z-axis direction moving platform 640. The support X-axis direction moving platform 620 is slidably arranged on the support X-axis direction track 611. The support Y-axis direction moving platform 630 is slidably arranged on the support X-axis direction moving platform 620, and the sliding direction is perpendicular to the moving direction of the support X-axis direction moving platform 620. The support Z-axis direction moving platform 640 is slidably arranged on the support Y-axis direction moving platform 630, and the sliding direction is perpendicular to the moving directions of the support Y-axis direction moving platform 630 and the support X-axis direction moving platform 620. The support parallel positioning device 650 is installed on the support Z-axis direction moving platform 640.

[0080] The support device 700 is installed on the support parallel positioning device 650, and different types of support devices 700 are respectively applied to mirror milling machining and incremental forming machining.

[0081] The large curved surface thin-walled part mirror machining equipment 1 of this embodiment can adjust the position of the machining device 500 on the surface to be machined of the part 2 to be machined by the horizontal movement of the machining X-axis direction moving platform 320 and the vertical movement of the machining Y-axis direction moving platform 330, and can adjust the distance between the machining device and the surface to be machined of the part 2 to be machined by the movement of the machining Z-axis direction moving platform 340; the fine pose adjustment of the machining device 500 in multiple degrees of freedom can be realized through the machining parallel positioning device 350; the position of the supporting device 700 on the surface to be supported of the part 2 to be supported can be adjusted by the horizontal movement of the supporting X-axis direction moving platform 620 and the vertical movement of the supporting Y-axis direction moving platform 630; the distance between the supporting device 700 and the surface to be supported of the part 2 to be supported can be adjusted by the movement of the supporting Z-axis direction moving platform 640. The fine pose adjustment of the supporting device 700 in multiple degrees of freedom can be realized through the supporting parallel positioning device 650. Thus, during the machining process of the machining device 500, the axis of the supporting device 700 can be kept coincident with the axis of the machining device 500, and the relative distance between the supporting device 700 and the machining device 500 can be kept constant, so as to use the supporting device 700 to support the machining position of the machining device 500, avoid the deformation of the part 2 to be machined with the characteristics of large curved surface thin wall, and ensure that the machining accuracy of the thin wall thickness of the part 2 to be machined meets the process requirements.

[0082] Moreover, by using the multi-axis parallel machining parallel positioning device 350 to position the machining device 500 and using the multi-axis parallel supporting parallel positioning device 650 to position the supporting device 700, compared with the machining methods in the traditional related technologies, the large curved surface thin-walled part mirror machining equipment 1 of this embodiment has higher adaptability to the working space and environment in the mirror milling machining and incremental forming machining of the outer grid features of the large curved surface thin-walled part, improves the flexibility of the machining operation, and is convenient for ensuring the machining accuracy.

[0083] In some embodiments, such as Figures 2 - 13As shown, the machining positioning assembly 300 further includes a machining X-axis direction driving device for driving the machining X-axis direction moving platform 320, a machining Y-axis direction driving device for driving the machining Y-axis direction moving platform 330, and a machining Z-axis direction driving device for driving the machining Z-axis direction moving platform 340; the support positioning assembly 600 further includes a support X-axis direction driving device for driving the support X-axis direction moving platform 620, a support Y-axis direction driving device for driving the support Y-axis direction moving platform 630, and a support Z-axis direction driving device for driving the support Z-axis direction moving platform 640. This facilitates the driving of the machining X-axis direction moving platform 320, the machining Y-axis direction moving platform 330, the machining Z-axis direction moving platform 340, the support X-axis direction moving platform 620, the support Y-axis direction moving platform 630, and the support Z-axis direction moving platform 640, and facilitates the precise control of the positions of the machining device 500, the support device 700, and the part 2 to be machined.

[0084] In some embodiments, as Figures 2 to 13 shown, the machining X-axis direction driving device includes a machining X-axis direction driving motor 321, a machining X-axis direction driving gear 322, and a machining X-axis direction rack 323. The machining X-axis direction driving motor 321 is installed on the machining X-axis direction moving platform 320. The machining X-axis direction driving gear 322 is fixedly connected to the X-axis direction driving motor 321. The machining X-axis direction rack 323 is installed on the machining base 310 and is drivingly connected to the machining X-axis direction driving gear 322. In this way, through the engagement of the machining X-axis direction driving gear 322 on the machining X-axis direction moving platform 320 with the machining X-axis direction rack 323 on the machining base 310, the rotation of the machining X-axis direction driving motor 321 driving the machining X-axis direction driving gear 322 is converted into the movement of the machining X-axis direction moving platform 320 along the direction of the machining X-axis direction rack 323, thereby realizing the driving of the machining X-axis direction moving platform 320.

[0085] The processing Y-axis direction driving device includes a processing Y-axis direction driving motor 332, a processing Y-axis direction driving lead screw 333, and a processing Y-axis direction driving nut 334. The processing Y-axis direction driving motor 332 can be vertically installed on the processing X-axis direction moving platform 320. The processing Y-axis direction driving motor 332 is in transmission connection with the processing Y-axis direction driving lead screw 333. The processing Y-axis direction driving lead screw 333 is in threaded fit with the processing Y-axis direction driving nut 334. The processing Y-axis direction driving nut 334 can be vertically installed on the processing Y-axis direction moving platform 330. In this way, through the threaded fit between the processing Y-axis direction driving lead screw 333 and the processing Y-axis direction driving nut 334 on the processing Y-axis direction moving platform 330, the rotation of the processing Y-axis direction driving motor 332 driving the processing Y-axis direction driving lead screw 333 is converted into the movement of the processing Y-axis direction moving platform 330 in the axial direction of the processing Y-axis direction driving lead screw 333, thereby realizing the driving of the processing Y-axis direction moving platform 330.

[0086] The processing Z-axis direction driving device includes a processing Z-axis direction driving motor 342, a processing Z-axis direction driving lead screw 343, and a processing Z-axis direction driving nut 344. The processing Z-axis direction driving motor 342 can be vertically installed on the processing Y-axis direction moving platform 330. The processing Z-axis direction driving motor 342 is in transmission connection with the processing Z-axis direction driving lead screw 343. The processing Z-axis direction driving lead screw 343 is in threaded fit with the processing Z-axis direction driving nut 344. The processing Z-axis direction driving nut 344 can be vertically installed on the processing Z-axis direction moving platform 340. In this way, through the threaded fit between the processing Z-axis direction driving lead screw 343 and the processing Z-axis direction driving nut 344 on the processing Z-axis direction moving platform 340, the rotation of the processing Z-axis direction driving motor 342 driving the processing Z-axis direction driving lead screw 343 is converted into the movement of the processing Z-axis direction moving platform 340 in the axial direction of the processing Z-axis direction driving lead screw 343, thereby realizing the driving of the processing Z-axis direction moving platform 340.

[0087] The X-axis direction driving device for support includes an X-axis direction driving motor 621 for support, an X-axis direction driving gear 622 for support, and an X-axis direction rack 623 for support. The X-axis direction driving motor 621 for support is installed on the X-axis direction moving platform 620 for support. The X-axis direction driving gear 622 for support is fixedly connected to the X-axis direction driving motor 621. The X-axis direction rack 623 for support is installed on the support base 610 and is drivingly connected to the X-axis direction driving gear 622 for support. In this way, through the meshing of the X-axis direction driving gear 622 for support on the X-axis direction moving platform 620 for support and the X-axis direction rack 623 for support on the support base 610, the rotation of the X-axis direction driving motor 621 for support driving the X-axis direction driving gear 622 for support is converted into the movement of the X-axis direction moving platform 620 for support along the direction of the X-axis direction rack 623 for support, thereby realizing the driving of the X-axis direction moving platform 620 for support.

[0088] The Y-axis direction driving device for support includes a Y-axis direction driving motor 632 for support, a Y-axis direction driving lead screw 633 for support, and a Y-axis direction driving nut 634 for support. The Y-axis direction driving motor 632 for support can be vertically installed on the X-axis direction moving platform 620 for support. The Y-axis direction driving motor 632 for support is in transmission connection with the Y-axis direction driving lead screw 633 for support. The Y-axis direction driving lead screw 633 for support is in threaded cooperation with the Y-axis direction driving nut 634 for support. The Y-axis direction driving nut 634 for support can be vertically installed on the Y-axis direction moving platform 630 for support. In this way, through the threaded cooperation of the Y-axis direction driving lead screw 633 for support and the Y-axis direction driving nut 634 for support on the Y-axis direction moving platform 630 for support, the rotation of the Y-axis direction driving motor 632 for support driving the Y-axis direction driving lead screw 633 for support is converted into the movement of the Y-axis direction moving platform 630 for support in the axial direction of the Y-axis direction driving lead screw 633 for support, thereby realizing the driving of the Y-axis direction moving platform 630 for support.

[0089] The Z-axis direction support driving device includes a Z-axis direction support driving motor 642, a Z-axis direction support driving lead screw 643, and a Z-axis direction support driving nut 644. The Z-axis direction support driving motor 642 can be vertically installed on the Y-axis direction moving platform 620. The Z-axis direction support driving motor 642 is in transmission connection with the Z-axis direction support driving lead screw 643. The Z-axis direction support driving lead screw 643 is in threaded fit with the Z-axis direction support driving nut 644. The Z-axis direction support driving nut 644 can be vertically installed on the Z-axis direction moving platform 640. In this way, through the threaded fit between the Z-axis direction support driving lead screw 643 and the Z-axis direction support driving nut 644 on the Z-axis direction moving platform 640, the rotation of the Z-axis direction support driving lead screw 643 driven by the Z-axis direction support driving motor 642 is converted into the movement of the Z-axis direction moving platform 640 in the axial direction of the Z-axis direction support driving lead screw 643, thereby realizing the driving of the Z-axis direction moving platform 640.

[0090] In some embodiments, as Figures 3 to 7 shown, the machining parallel positioning device 350 includes a machining parallel positioning bracket 351 and a plurality of machining chains 352; the machining parallel positioning bracket 351 is connected to the Z-axis direction moving platform 340 of the machining, and the machining chains 352 are respectively connected to the machining parallel positioning bracket 351 and the machining device 500. Specifically, the machining parallel positioning device 350 is a six-axis parallel positioning device, a three-axis parallel positioning device, or a five-axis parallel positioning device. In other words, the number of machining chains 352 is six, three, or five. In this way, using the machining parallel positioning bracket 351 to connect a plurality of machining chains 352 facilitates the fine pose adjustment and positioning of the machining device 500 in multiple degrees of freedom.

[0091] As Figures 9 to 13 shown, the support parallel positioning device 650 includes a support parallel positioning bracket 651 and a plurality of support chains 652; the support parallel positioning bracket 651 is connected to the Z-axis direction moving platform 640 of the support, and the support chains 652 are respectively connected to the support parallel positioning bracket 651 and the support device 700. Specifically, the support parallel positioning device 650 is a six-axis parallel positioning device, a three-axis parallel positioning device, or a five-axis parallel positioning device. In other words, the number of support chains 652 is six, three, or five. In this way, using the support parallel positioning bracket 651 to connect a plurality of support chains 652 facilitates the fine pose adjustment and positioning of the support device 700 in multiple degrees of freedom.

[0092] In some embodiments, the machining branch chain 352 includes a machining hollow motor 3521 and a machining ball screw 3522. The machining hollow motor 3521 is in transmission connection with the machining ball screw 3522, and the rotation of the machining hollow motor 3521 drives the machining ball screw 3522 to rotate along the central axis and move axially. The machining hollow motor 3521 is connected to the machining parallel positioning bracket through a first machining hinge 3503, and the machining ball screw 3522 is connected to the machining device through a second machining hinge 3504; the number of machining branch chains 352 is six, five or three; when the number of machining branch chains 352 is six, all six second machining hinges 3504 are double-rotating pair hinges, and all six first machining hinges 3503 are double-rotating pair hinges; when the number of machining branch chains 352 is five, four of the five second machining hinges 3504 are double-rotating pair hinges and one is a single-rotating pair hinge, and all five first machining hinges 3503 are double-rotating pair hinges; when the number of machining branch chains 352 is three, all three second machining hinges 3504 are double-rotating pair hinges and all three first machining hinges 3503 are single-rotating pair hinges, or all three second machining hinges 3504 are single-rotating pair hinges and all three first machining hinges 3503 are double-rotating pair hinges.

[0093] Specifically, as Figure 3 and Figure 4 shown, the machining branch chain 352 includes a machining hollow motor 3521 and a machining ball screw 3522. The machining hollow motor 3521 is in transmission connection with the machining ball screw 3522, and the rotation of the machining hollow motor 3521 drives the machining ball screw 3522 to rotate along the central axis and move axially. The machining hollow motor 3521 is connected to the machining parallel positioning bracket 351 through a first machining hinge 353, and the machining ball screw 3522 is connected to the machining device 500 through a second machining hinge 354. The number of machining branch chains 352 is six, and all six second machining hinges 354 are double-rotating pair hinges, and all six first machining hinges 353 are double-rotating pair hinges. In this way, multi-axis drive of the machining device 500 can be achieved.

[0094] As Figure 5 shown, the machining branch chain 352 includes a machining hollow motor 3521 and a machining ball screw 3522. The machining hollow motor 3521 is in transmission connection with the machining ball screw 3522, and the rotation of the machining hollow motor 3521 drives the machining ball screw 3522 to rotate along the central axis and move axially. The machining hollow motor 3521 is connected to the machining parallel positioning bracket 351 through a first machining hinge 353, and the machining ball screw 3522 is connected to the machining device 500 through a second machining hinge 354. The number of machining branch chains 352 is three, and all three second machining hinges 354 are double-rotating pair hinges, and all three first machining hinges 353 are single-rotating pair hinges. In this way, multi-axis drive of the machining device 500 can be achieved.

[0095] As shown Figure 6 in the figure, the processing branch chain 352 includes a processing hollow motor 3521 and a processing ball screw 3522. The processing hollow motor 3521 is in transmission connection with the processing ball screw 3522, and the rotation of the processing hollow motor 3521 drives the processing ball screw 3522 to rotate along the central axis and move axially. The processing hollow motor 3521 is connected to the processing parallel positioning bracket 351 through a first processing hinge 353, and the processing ball screw 3522 is connected to the processing device 500 through a second processing hinge 354. There are three processing branch chains 352. All three second processing hinges 354 are single-rotation-pair hinges, and all three first processing hinges 353 are double-rotation-pair hinges. In this way, multi-axis drive of the processing device 500 can be achieved.

[0096] As shown Figure 7 in the figure, the processing branch chain 352 includes a processing hollow motor 3521 and a processing ball screw 3522. The processing hollow motor 3521 is in transmission connection with the processing ball screw 3522, and the rotation of the processing hollow motor 3521 drives the processing ball screw 3522 to rotate along the central axis and move axially. The processing hollow motor 3521 is connected to the processing parallel positioning bracket 351 through a first processing hinge 353, and the processing ball screw 3522 is connected to the processing device 500 through a second processing hinge 354. There are five processing branch chains 352. Four of the five second processing hinges 354 are double-rotation-pair hinges and one is a single-rotation-pair hinge. All five first processing hinges 353 are double-rotation-pair hinges. In this way, multi-axis drive of the processing device 500 can be achieved.

[0097] In some embodiments, as shown Figures 9 to 13As shown, the support branch chain 652 includes a support hollow motor 6521 and a support hollow motor 6521. The support hollow motor 6521 is in transmission connection with the support hollow motor 6521, and drives the support hollow motor 6521 to rotate along the central axis and move axially through the rotation of the support hollow motor 6521. The support hollow motor 6521 is connected to the support parallel positioning bracket 651 through a first support hinge 653, and the support hollow motor 6521 is connected to the support device 700 through a second support hinge 654; the support branch chain 652 is six, five or three; when the support branch chain 652 is six, all six second support hinges 654 are double-rotating pair hinges, and all six first support hinges 653 are double-rotating pair hinges; when the support branch chain 652 is five, four of the five second support hinges 654 are double-rotating pair hinges and one is a single-rotating pair hinge, and all five first support hinges 653 are double-rotating pair hinges; when the support branch chain 652 is three, all three second support hinges 654 are double-rotating pair hinges and all three first support hinges 653 are single-rotating pair hinges, or all three second support hinges 654 are single-rotating pair hinges and all three first support hinges 653 are double-rotating pair hinges.

[0098] Specifically, as Figure 9 and Figure 10 shown, the support branch chain 652 includes a support hollow motor 6521 and a support ball screw 6522. The support hollow motor 6521 is in transmission connection with the support ball screw 6522, and drives the support ball screw 6522 to rotate along the central axis and move axially through the rotation of the support hollow motor 6521. The support hollow motor 6521 is connected to the support parallel positioning bracket 651 through a first support hinge 653, and the support ball screw 6522 is connected to the support device 700 through a second support hinge 654. The support branch chain 652 is six, and all six second support hinges 654 are double-rotating pair hinges, and all six first support hinges 653 are double-rotating pair hinges. In this way, multi-axis drive of the support device 700 can be achieved.

[0099] Such as Figure 11 shown, the support branch chain 652 includes a support hollow motor 6521 and a support ball screw 6522. The support hollow motor 6521 is in transmission connection with the support ball screw 6522, and drives the support ball screw 6522 to rotate along the central axis and move axially through the rotation of the support hollow motor 6521. The support hollow motor 6521 is connected to the support parallel positioning bracket 651 through a first support hinge 653, and the support ball screw 6522 is connected to the support device 700 through a second support hinge 654. The support branch chain 652 is three, and all three second support hinges 654 are double-rotating pair hinges, and all three first support hinges 653 are single-rotating pair hinges. In this way, multi-axis drive of the support device 700 can be achieved.

[0100] As Figure 12 shown, the support branch chain 652 includes a support hollow motor 6521 and a support ball screw 6522. The support hollow motor 6521 is in transmission connection with the support ball screw 6522, and drives the support ball screw 6522 to rotate along the central axis and move axially through the rotation of the support hollow motor 6521. The support hollow motor 6521 is connected to the support parallel positioning bracket 651 through a first support hinge 653, and the support ball screw 6522 is connected to the support device 700 through a second support hinge 654. There are three support branch chains 652. All three second support hinges 654 are single-rotation-pair hinges, and all three first support hinges 653 are double-rotation-pair hinges. In this way, multi-axis drive of the support device 700 can be achieved.

[0101] As Figure 13 shown, the support branch chain 652 includes a support hollow motor 6521 and a support ball screw 6522. The support hollow motor 6521 is in transmission connection with the support ball screw 6522, and drives the support ball screw 6522 to rotate along the central axis and move axially through the rotation of the support hollow motor 6521. The support hollow motor 6521 is connected to the support parallel positioning bracket 651 through a first support hinge 653, and the support ball screw 6522 is connected to the support device 700 through a second support hinge 654. There are five support branch chains 652. Four of the five second support hinges 654 are double-rotation-pair hinges and one is a single-rotation-pair hinge, and all five first support hinges 653 are double-rotation-pair hinges. In this way, multi-axis drive of the support device 700 can be achieved.

[0102] In some embodiments, as Figure 14 shown, the processing device 500 includes a processing motor spindle 510, a first processing tool holder 520, and a processing tool 530 used for mirror milling. The processing motor spindle 510 is installed on the processing parallel positioning device 350, the first processing tool holder 520 is installed on the processing motor spindle 510, and the processing tool 530 is installed on the first processing tool holder 520. In this way, the processing device 500 can perform mirror milling on the workpiece 2 to be processed.

[0103] Or, as Figure 15 shown, the processing device 500 includes a processing tool holder base 540, a second processing tool holder 550, and a main tool 560 used for incremental forming. The processing tool holder base 540 is installed on the processing parallel positioning device 350, the second processing tool holder 550 is installed on the processing tool holder base 540, and the main tool 560 is installed on the second processing tool holder 550. In this way, the processing device 500 can perform incremental forming on the workpiece 2 to be processed.

[0104] In some embodiments, as Figures 16 - 17As shown, the support device 700 includes a support head base 710, a support head 720 for mirror milling, and a wall thickness measuring device 760; the support head 720 includes a contact support head and a hydraulic pressure support head, the wall thickness measuring device 760 includes an ultrasonic thickness gauge, an eddy current thickness gauge, etc., the support head base 710 is installed on the support parallel positioning device 650, the support head 720 is installed on the support head base 710, and the wall thickness measuring device 760 is installed on the support head 720. In this way, the support device 700 can support the mirror milling of the part 2 to be machined.

[0105] Alternatively, as Figure 18 shown, the support device 700 includes a support tool holder base 730, a support tool holder 740, and a subordinate tool 750 for incremental forming; the support tool holder base 730 is installed on the support parallel positioning device 650, the support tool holder 740 is installed on the support tool holder base 730, and the subordinate tool 750 is installed on the support tool holder 740. In this way, the support device 700 can support the incremental forming of the part 2 to be machined by the subordinate tool 750.

[0106] In some embodiments, as Figure 1 、 Figures 19 to 20 shown, the fixture assembly includes a fixture base 100 and a fixture device 200; the fixture device 200 is slidably installed on the fixture base 100 and includes a fixture fixed beam 210, a telescopic fixture arm 220, and a fixture head 230; the fixture fixed beam 210 is installed on the fixture base 100, the telescopic fixture arm 220 is installed on the fixture fixed beam 210, and the fixture head 230 is installed on the telescopic fixture arm 220 for fixing the part 2 to be machined. Among them, as Figure 19 shown, the contact surface between the fixture head 230 and the fixed part 2 to be machined is small, approximately a point contact, which is suitable for fixing parts with curved boundaries; as Figure 20 shown, the contact surface between the fixture head 230 and the fixed part 2 to be machined is large, and the contact surface is a rectangle with a high aspect ratio, which is suitable for fixing parts with straight boundaries. Thus, the fixture device 200 can reliably adapt and fix the part 2 to be machined.

[0107] As Figure 21 shown, the following describes the control method of the large curved surface thin-walled part mirror machining equipment 1 according to the above embodiments of the present invention, including the following steps:

[0108] S1: Install the part 2 to be machined on the fixture assembly; specifically, install it on the fixture device 200 of the fixture assembly, and make the surface to be machined of the machined part 2 face the machining positioning assembly 300, and make the surface to be supported of the machined part 2 face the support positioning assembly 600.

[0109] S2: Drive the processing device 500 through the processing positioning component 300 to position the processing device 500 on the surface to be processed of the workpiece 2 to be processed.

[0110] S3: Drive the supporting device 700 through the supporting positioning component 600 to position the supporting device 700 on the surface to be supported of the workpiece 2 to be processed, and make the axis of the supporting device 700 coincide with the axis of the processing device 500;

[0111] S4: By measuring the wall thickness at the processing position of the workpiece 2 to be processed, and according to the difference between the measured wall thickness and the target wall thickness, solve the relative motion relationship between the processing device 500 and the supporting device 700;

[0112] S5: Drive the processing device 500 and the supporting device 700 in real-time correspondence through the processing positioning component 300 and the supporting positioning component 600 according to the solved relative motion relationship information, so that the relative distance between the processing device 500 and the supporting device 700 meets the distance requirements for corresponding wall thickness processing, and complete the processing of the surface of the workpiece 2 to be processed;

[0113] S6: By measuring the wall thickness at the processing position of the workpiece 2 to be processed in real-time, if the measured wall thickness has not reached the target wall thickness, adjust the relative motion relationship between the processing device 500 and the supporting device 700, repeat S5 and S6 until the measured wall thickness meets the requirements, if the measured wall thickness meets the requirements, then perform the processing of the next position on the surface to be processed, and repeat S2 to S6 until the processing of the surface of the workpiece 2 to be processed is completed.

[0114] According to the control method of the large curved surface thin-walled part mirror processing equipment 1 of the embodiment of the present invention, by using the large curved surface thin-walled part mirror processing equipment 1 according to the above embodiment of the present invention, it has the advantages of strong adaptability, high operation flexibility, high processing accuracy, etc.

[0115] Other components and operations of the large curved surface thin-walled part mirror processing equipment 1 according to the embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

[0116] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mirror processing equipment for large curved thin-walled parts, characterized in that: It includes a fixture assembly, a processing and positioning assembly, a processing device, a supporting and positioning assembly and a supporting device; Wherein, the fixture assembly is used to fix the parts to be processed; The processing positioning assembly is arranged on one side of the fixture assembly, and includes a processing base, a processing movable platform installed on the processing base, and a processing parallel positioning device installed on the processing movable platform, wherein the processing movable platform is used to drive the processing parallel positioning device along the X-axis direction, the Y-axis direction and the Z-axis direction; The processing device is installed on the processing parallel positioning device, and the processing parallel positioning device is used to finely adjust the posture of the processing device in multiple degrees of freedom. The processing device is applied to mirror milling processing or incremental forming processing; The support positioning assembly is arranged on the other side of the fixture assembly, including a support base, a support movable platform installed on the support base, and a support parallel positioning device installed on the support movable platform, and the support movable platform is used to drive the support parallel positioning device along the X-axis direction, the Y-axis direction and the Z-axis direction; The support device is installed on the support parallel positioning device, and the support parallel positioning device is used to finely adjust the posture of the support device in multiple degrees of freedom. The support device is applied to mirror milling support or progressive forming support.

2. The mirror processing equipment for large curved thin-walled parts according to claim 1 is characterized in that: The processing movable platform includes a processing X-axis direction movable platform, a processing Y-axis direction movable platform and a processing Z-axis direction movable platform; the processing base is provided with a processing X-axis direction track, the processing X-axis direction movable platform can be slidably arranged on the processing X-axis direction track, the processing Y-axis direction movable platform can be slidably arranged on the processing X-axis direction movable platform and the sliding direction is perpendicular to the moving direction of the processing X-axis direction movable platform, the processing Z-axis direction movable platform can be slidably arranged on the processing Y-axis direction movable platform and the sliding direction is perpendicular to the moving directions of the processing X-axis direction movable platform and the processing Y-axis direction movable platform, and the processing parallel positioning device is installed on the processing Z-axis direction movable platform; The supporting moving platform includes a supporting moving platform in the X-axis direction, a supporting moving platform in the Y-axis direction and a supporting moving platform in the Z-axis direction; The support base is provided with a support X-axis direction track, the support X-axis direction movable platform is slidably arranged on the support X-axis direction track, the support Y-axis direction movable platform is slidably arranged on the support X-axis direction movable platform and the sliding direction is perpendicular to the moving direction of the support X-axis direction movable platform, the support Z-axis direction movable platform is slidably arranged on the support Y-axis direction movable platform and the sliding direction is perpendicular to the moving directions of the support Y-axis direction movable platform and the support Z-axis direction movable platform, and the support parallel positioning device is installed on the support Z-axis direction movable platform.

3. The mirror processing equipment for large curved thin-walled parts according to claim 2 is characterized in that: The processing positioning assembly also includes a processing X-axis direction driving device for driving the processing X-axis direction moving platform, a processing Y-axis direction driving device for driving the processing Y-axis direction moving platform, and a processing Z-axis direction driving device for driving the processing Y-axis direction moving platform; The supporting and positioning assembly also includes a supporting X-axis direction driving device for driving the supporting X-axis direction movable platform, a supporting Y-axis direction driving device for driving the supporting Y-axis direction movable platform, and a supporting Z-axis direction driving device for driving the supporting Z-axis direction movable platform.

4. The mirror processing equipment for large curved thin-walled parts according to claim 3 is characterized in that: The processing X-axis direction driving device comprises a processing X-axis direction driving motor, a processing X-axis direction driving gear and a processing X-axis direction rack, wherein the processing X-axis direction driving motor is mounted on the processing X-axis direction moving platform, the processing X-axis direction driving gear is fixedly connected to the X-axis direction driving motor, and the processing X-axis direction rack is mounted on the processing base and drivingly connected to the processing X-axis direction driving gear; The processing Y-axis direction driving device comprises a processing Y-axis direction driving motor, a processing Y-axis direction driving lead screw and a processing Y-axis direction driving nut, wherein the processing Y-axis direction driving motor can be vertically mounted on the processing X-axis direction moving platform, the processing Y-axis direction driving motor is drivingly connected with the processing Y-axis direction driving lead screw, the processing Y-axis direction driving lead screw is threadedly matched with the processing Y-axis direction driving nut, and the processing Y-axis direction driving nut can be vertically mounted on the processing Y-axis direction moving platform; The processing Z-axis direction driving device includes a processing Z-axis direction driving motor, a processing Z-axis direction driving screw and a processing Z-axis direction driving nut. The processing Z-axis direction driving motor can be vertically mounted on the processing Y-axis direction moving platform. The processing Z-axis direction driving motor is drivingly connected to the processing Z-axis direction driving screw. The processing Z-axis direction driving screw is threadedly matched with the processing Z-axis direction driving nut. The processing Z-axis direction driving nut can be vertically mounted on the processing Z-axis direction moving platform.

5. The mirror processing equipment for large curved thin-walled parts according to claim 3 is characterized in that: The support X-axis direction driving device comprises a support X-axis direction driving motor, a support X-axis direction driving gear and a support X-axis direction rack, wherein the support X-axis direction driving motor is mounted on the support X-axis direction moving platform, the support X-axis direction driving gear is fixedly connected to the X-axis direction driving motor, and the support X-axis direction rack is mounted on the support base and drivingly connected to the support X-axis direction driving gear; The supporting Y-axis direction driving device comprises a supporting Y-axis direction driving motor, a supporting Y-axis direction driving lead screw and a supporting Y-axis direction driving nut, wherein the supporting Y-axis direction driving motor can be vertically mounted on the supporting X-axis direction moving platform, the supporting Y-axis direction driving motor is drivingly connected with the supporting Y-axis direction driving lead screw, the supporting Y-axis direction driving lead screw is threadedly matched with the supporting Y-axis direction driving nut, and the supporting Y-axis direction driving nut can be vertically mounted on the supporting Y-axis direction moving platform; The support Z-axis direction driving device includes a support Z-axis direction driving motor, a support Z-axis direction driving screw and a support Z-axis direction driving nut. The support Z-axis direction driving motor can be vertically installed on the support Y-axis direction moving platform. The support Z-axis direction driving motor is transmission-connected to the support Z-axis direction driving screw. The support Z-axis direction driving screw is threadedly matched with the support Z-axis direction driving nut. The support Z-axis direction driving nut can be vertically installed on the support Z-axis direction moving platform.

6. The mirror processing equipment for large curved thin-walled parts according to any one of claims 1 to 5, characterized in that: The processing parallel positioning device comprises a processing parallel positioning bracket and a plurality of processing branches; the processing parallel positioning bracket is connected to the processing Z-axis direction moving platform, and the processing branches are respectively connected to the processing parallel positioning bracket and the processing device; The supporting parallel positioning device includes a supporting parallel positioning bracket and a plurality of supporting branches; the supporting parallel positioning bracket is connected to the supporting Z-axis direction moving platform, and the supporting branches are respectively connected to the supporting parallel positioning bracket and the supporting device.

7. The mirror processing equipment for large curved thin-walled parts according to claim 6 is characterized in that: The processing branch chain includes a processing hollow motor and a processing ball screw, the processing hollow motor is connected to the processing ball screw in a transmission manner and the processing ball screw is driven to rotate along the central axis and move axially through the rotation of the processing hollow motor, the processing hollow motor is connected to the processing parallel positioning bracket through a first processing hinge, and the processing ball screw is connected to the processing device through a second processing hinge; the processing branch chains are six, five or three; when the processing branch chains are six, the six second processing hinges are all double rotating secondary hinges, and the six first processing hinges are all double rotating secondary hinges; when the processing branch chains are five, four of the five second processing hinges are double rotating secondary hinges and one is a single rotating secondary hinge, and the five first processing hinges are all double rotating secondary hinges; when the processing branch chains are three, the three second processing hinges are all double rotating secondary hinges and the three first processing hinges are all single rotating secondary hinges, or, the three second processing hinges are all single rotating secondary hinges and the three first processing hinges are all double rotating secondary hinges.

8. The mirror processing equipment for large curved thin-walled parts according to claim 6 is characterized in that: The support branch chain includes a support hollow motor and a support ball screw, the support hollow motor is transmission-connected to the support ball screw and the support ball screw is driven to rotate along the central axis and move axially through the rotation of the support hollow motor, the support hollow motor is connected to the support parallel positioning bracket through a first support hinge, and the support ball screw is connected to the support device through a second support hinge; the support branches are six, five or three; when the support branches are six, the six second support hinges are all double-rotation secondary hinges, and the six first support hinges are all double-rotation secondary hinges; when the support branches are five, four of the five second support hinges are double-rotation secondary hinges and one is a single-rotation secondary hinge, and the five first support hinges are all double-rotation secondary hinges; when the support branches are three, the three second support hinges are all double-rotation secondary hinges and the three first support hinges are all single-rotation secondary hinges, or, the three second support hinges are all single-rotation secondary hinges and the three first support hinges are all double-rotation secondary hinges.

9. The mirror processing equipment for large curved thin-walled parts according to any one of claims 1 to 5, characterized in that: The processing device comprises a processing motor spindle, a processing first tool holder and a processing tool used for mirror milling processing; the processing motor spindle is installed on the processing parallel positioning device, the processing first tool holder is installed on the processing motor spindle, and the processing tool is installed on the processing first tool holder; Or the processing device includes a processing tool holder base, a processing second tool holder and a main tool used for incremental forming processing; the processing tool holder base is installed on the processing parallel positioning device, the processing second tool holder is installed on the processing tool holder base, and the main tool is installed on the processing second tool holder.

10. The mirror processing equipment for large curved thin-walled parts according to any one of claims 1 to 5, characterized in that: The support device comprises a support head base, a support head used for mirror milling processing and a wall thickness measuring device; the support head base is installed on the support parallel positioning device, the support head is installed on the support head base, and the wall thickness measuring device is installed on the support head; Or the supporting device includes a supporting tool holder base, a supporting tool holder and a subordinate tool used for progressive forming processing, the supporting tool holder base is installed on the supporting parallel positioning device, the supporting tool holder is installed on the supporting tool holder base, and the subordinate tool is installed on the supporting tool holder.

11. The mirror processing equipment for large curved thin-walled parts according to any one of claims 1 to 5, characterized in that: The fixture assembly includes a fixture base and a fixture device; the fixture device is slidably mounted on the fixture base and includes a fixture fixing beam, a retractable fixture arm and a fixture head; the fixture fixing beam is mounted on the fixture base, the retractable fixture arm is mounted on the fixture fixing beam, and the fixture head is mounted on the retractable fixture arm for fixing the parts to be processed.

12. A control method for large curved thin-walled parts mirror processing equipment according to any one of claims 1 to 11, characterized in that: The following steps are involved: S1: Installing the part to be processed onto the fixture assembly; S2: driving the processing device through the processing positioning component to position the processing device on the surface to be processed of the part to be processed; S3: driving the support device through the support positioning assembly to position the support device on the supported surface of the part to be processed, and making the axial direction of the support device coincide with the axis of the processing device; S4: by measuring the wall thickness of the part to be processed at the processing position, according to the difference between the measured wall thickness and the target wall thickness, solving the relative motion relationship between the processing device and the supporting device; S5: the processing device and the support device are driven in real time and in correspondence with each other according to the calculated relative motion relationship information by the processing positioning component and the support positioning component, so that the relative distance between the processing device and the support device meets the distance requirement of the corresponding wall thickness processing, and the processing of the surface of the part to be processed is completed; S6: By measuring the wall thickness at the processing position of the part to be processed in real time, if the measured wall thickness has not reached the target wall thickness, the relative motion relationship between the processing device and the supporting device is adjusted, and S5 and S6 are repeated until the measured wall thickness meets the requirement. If the measured wall thickness meets the requirement, the next location of the surface to be processed is processed, and S2 to S6 are repeated until the surface processing of the part to be processed is completed.

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