A kind of aviation forging part numerical control milling machine tool processing fixing clamp

Abstract

The application relates to the technical field of milling machine processing, and discloses a fixing clamp for aviation forge part numerical control milling machine processing, which comprises a mounting frame, the top of the mounting frame is provided with an obliquely arranged shell, a first carrier plate and a second carrier plate are arranged in the shell, the first carrier plate and the second carrier plate are respectively used for supporting two surfaces of a part, a notch is formed in the top of the shell, and the notch is matched with the first carrier plate and the second carrier plate. The fixing clamp can realize the cooperative action of a working surface overturning system and a part clamping overturning system, manual dismounting, re-alignment and clamping are not needed in the whole process, the processing auxiliary time is obviously reduced, the first carrier plate, the second carrier plate and the matched type groove can realize the differential and stable support of the front and back surfaces of the part, the first type groove is formed in the adsorption end of the first electromagnet and the second electromagnet, and the profiling limiting adsorption of the part is realized.

Description

Technical Field

[0001] This invention relates to the field of milling machine technology, specifically a fixed fixture for CNC milling of aerospace forging parts. Background Technology

[0002] In the aerospace manufacturing industry, forged aerospace parts are widely used due to their excellent mechanical properties and reliability. These parts are typically precision-machined using milling machines, and in actual production, it is often necessary to mill both the front and back sides of the part separately. To ensure machining accuracy, the parts must be reliably positioned and clamped using specialized fixtures before each machining operation.

[0003] Currently, after the front side of a part is machined, if the back side needs to be machined, the operator must first completely remove the part from the fixture, then flip the part over, and then realign, position, and clamp it again. This process is not only cumbersome and time-consuming, affecting production efficiency, but also a great waste of manpower. Repeated clamping can also easily cause positioning errors, making it difficult to guarantee the accuracy requirements of the back side of the part. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fixed fixture for CNC milling of aerospace forging parts. The main purpose is to solve the problem that after machining the front side of a part, if machining the back side is required, the operator must first completely remove the part from the fixture, then flip the part, and re-align, position, and clamp it. This process is not only cumbersome and time-consuming, affecting production efficiency, but also wastes a significant amount of manpower. Repeated clamping can also easily generate positioning errors, making it difficult to guarantee the accuracy requirements for machining the back side of the part.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A fixed fixture for CNC milling of aerospace forging parts includes a mounting frame. An inclined housing is mounted on the top of the mounting frame. The housing contains a first carrier plate and a second carrier plate, which are used to support the two sides of the part, respectively. A slot is provided on the top of the housing, which is adapted to the first and second carrier plates. The housing is equipped with a working surface flipping system for switching between the first and second carrier plates, and a part clamping and flipping system for gripping and flipping parts on the first carrier plate and placing them on the second carrier plate.

[0006] Furthermore, the working surface flipping system includes a flipping bracket disposed inside the housing. A connecting bracket is rotatably connected between the inner walls of the two sides of the flipping bracket via bearings. The top and bottom of the connecting bracket are respectively fixed to the first carrier plate and the second carrier plate. A servo motor for driving the connecting bracket to rotate is fixedly connected to one outer wall of the flipping bracket. A hydraulic cylinder is fixedly connected to the bottom outer wall of the housing. The telescopic end of the hydraulic cylinder passes through the housing and is fixed to the flipping bracket. The top and bottom of the connecting bracket are provided with clamping assemblies for fixing parts. The top of the housing is provided with a positioning assembly for limiting the position of the first carrier plate and the second carrier plate.

[0007] Based on the aforementioned scheme, the part clamping and flipping system includes a finger cylinder disposed inside the housing. The two gripper ends of the finger cylinder are fixedly connected to gripping blocks, and grooves are provided on opposite sides of the two gripping blocks. A linear motor is fixedly connected to one outer wall of the housing. A rotary cylinder is fixedly connected to one side of the linear motor actuator. A connecting frame is fixedly connected to the rotating end of the rotary cylinder. The connecting frame is fixed to the finger cylinder. A part gripping system for transferring parts is provided on one outer wall of the housing.

[0008] As a further embodiment of the present invention, the part gripping system includes a second cylinder fixedly connected to one side of the outer wall of the housing. The telescopic end of the second cylinder passes through the housing and is fixedly connected to a support plate. Two symmetrically arranged first electromagnets and two symmetrically arranged second electromagnets are fixedly connected to one side of the support plate. One side of the first electromagnet is lower than one side of the second electromagnet, and the two first electromagnets are located inside the two second electromagnets.

[0009] Furthermore, a first groove is provided on the side of each of the first and second electromagnets away from the support plate, and the first groove is adapted to the contour shape of the part.

[0010] Based on the aforementioned scheme, both the first carrier plate and the second carrier plate have through grooves on their tops, the first carrier plate has a second type groove on its top, and the second carrier plate has a third type groove on its top.

[0011] As a further embodiment of the present invention, the top of the second carrier plate has two symmetrically arranged sliding grooves, and a top block is slidably connected in the sliding grooves. The bottom of the second carrier plate is fixedly connected to two symmetrically arranged first cylinders, and one end of the first cylinder passes through the second carrier plate and is fixed to the top block.

[0012] Furthermore, the top of both the first and second carrier plates are fixedly connected with two symmetrically arranged limiting strips, which are adapted to the contour shape of the part, and a side support plate is fixedly connected to the top edge of the first carrier plate.

[0013] Based on the aforementioned scheme, the positioning component includes multiple equidistant positioning slots formed on the inner wall of the top of the housing. Two symmetrically arranged protrusions are fixedly connected to both sides of the first carrier plate and the second carrier plate, and a positioning pin that is inserted into the positioning slot is fixedly connected to one side of the protrusion.

[0014] As a further embodiment of the present invention, the clamping assembly includes a first pneumatic clamp and a second pneumatic clamp respectively disposed at the top and bottom of the connecting bracket, and the grippers of the first pneumatic clamp and the second pneumatic clamp pass through the through slots of the first carrier plate and the second carrier plate respectively.

[0015] Compared with the prior art, the present invention provides a fixed fixture for CNC milling of aerospace forging parts, which has the following advantages: 1. This invention, through the coordinated action of a working surface flipping system and a part clamping flipping system, can automatically grab the part from the first carrier plate, flip it 180 degrees and transfer it to the second carrier plate, and then send it out to the processing position through the working surface flipping system. The whole process does not require manual disassembly and re-alignment and clamping, which significantly reduces processing auxiliary time and improves production efficiency.

[0016] 2. By setting a first carrier plate, a second carrier plate, and a matching groove, the present invention achieves differentiated and stable support for the front and back sides of the part, which can avoid the problem of part deformation caused by insufficient support when machining the back side using traditional single-sided clamping.

[0017] 3. The present invention achieves stable support on both sides through grooves, limiting strips and side support plates. After the front and back sides of the part are switched, the back side of the part can be embedded in the corresponding groove to avoid pressure damage. At the same time, the limiting strips and side support plates further prevent lateral displacement and bending deformation.

[0018] 4. This invention achieves automatic ejection of processed parts through the synergistic action of the first cylinder and the top block, avoiding the difficulty of manual removal caused by tight fit of parts or jamming of the groove. Workers or robotic arms can directly remove the ejected parts, effectively reducing the difficulty of unloading operations and the risk of damage to parts.

[0019] 5. By creating a first groove at the adsorption ends of the first electromagnet and the second electromagnet, the present invention achieves contour-guided and limiting adsorption of parts, significantly improving the stability during the transfer process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 2 This is a schematic cross-sectional view of the housing structure of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 3This is a schematic diagram of the positioning component structure of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 4 This is a schematic diagram of the working surface flipping system of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 5 This is a schematic cross-sectional view of the first carrier plate of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 6 This is a schematic diagram of the first carrier plate structure of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 7 This is a schematic diagram of the second carrier plate structure of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 8 This is a schematic cross-sectional view of the second carrier plate of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 9 This is a schematic diagram of the left-side part clamping and flipping system and part gripping system of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention; Figure 10 This is a schematic diagram of the right-side part clamping and flipping system and part gripping system of a fixed fixture for CNC milling of aerospace forging parts proposed in this invention.

[0021] Figure 11 This is a schematic diagram of the structure of the second electromagnet adsorbing aerospace parts in a fixed fixture for CNC milling of aerospace forging parts proposed in this invention.

[0022] Figure 12 This is a schematic diagram of the structure of the first electromagnet adsorbing aerospace parts in a fixed fixture for CNC milling of aerospace forging parts proposed in this invention.

[0023] Figure 13 This is a schematic diagram of the first protrusion of an aerospace part in a fixed fixture for CNC milling of aerospace forging parts proposed in this invention.

[0024] Figure 14 This is a schematic diagram of the structure of the second protrusion of an aerospace part in a fixed fixture for CNC milling of aerospace forging parts proposed in this invention.

[0025] In the diagram: 1. Working surface flipping system; 2. Positioning component; 3. Part clamping and flipping system; 4. Part gripping system; 5. Clamping component; 6. Housing; 7. Mounting bracket; 8. Slot; 9. First carrier plate; 10. Second carrier plate; 11. Limiting strip; 12. Through slot; 13. Top block; 14. Slide groove; 15. First cylinder; 101. Servo motor; 102. Hydraulic cylinder; 103. Tilting bracket; 104. Connecting bracket; 201. Positioning groove; 202. Positioning pin; 203. Protrusion; 301. Linear motor; 302. Rotary cylinder; 303. Connecting frame; 304. Finger cylinder; 305. Clamping block; 306. Groove; 401. Second cylinder; 402. Support plate; 403. First electromagnet; 404. Second electromagnet; 405. First groove; 501. First pneumatic chuck; 502. Second pneumatic chuck; 901. Side support plate; 902. Type II groove; 1001, Type III groove; a. Aerospace component; b. Through hole; c. First protrusion; d. Second protrusion; Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Please see Figures 1-14 As shown, a fixed fixture for CNC milling of aerospace forging parts comprises a mounting frame 7, a housing 6, a working surface flipping system 1, a part clamping and flipping system 3, a first carrier plate 9, and a second carrier plate 10. The working surface flipping system 1 drives the first carrier plate 9 and the second carrier plate 10 to flip, flipping the part into the housing 6. Then, the part is flipped by the part clamping and flipping system 3 inside the housing 6. Finally, the working surface flipping system 1 sends the second carrier plate 10 out, so that the flipped part is moved to the processing position for reverse processing. There is no need to manually disassemble the part and re-align and clamp it, which can effectively reduce processing auxiliary time, reduce labor costs, and improve production efficiency.

[0030] The top of the mounting bracket 7 is fixed with an inclined housing 6 by bolts. Inside the housing 6 are a first carrier plate 9 and a second carrier plate 10, which are used to support the two sides of the part respectively. The top of the housing 6 has a slot 8, which is adapted to the first carrier plate 9 and the second carrier plate 10. The first carrier plate 9 and the second carrier plate 10 can extend out of the housing 6 from the slot 8. After extending, the upper surface of the first carrier plate 9 or the second carrier plate 10 is kept horizontal with the housing 6, so as to process the part.

[0031] The housing 6 is equipped with a working surface flipping system 1 for switching between the first carrier plate 9 and the second carrier plate 10. The working surface flipping system 1 includes a flipping bracket 103 disposed inside the housing 6. A connecting bracket 104 is rotatably connected between the inner walls of the two sides of the flipping bracket 103 via bearings. The top and bottom of the connecting bracket 104 are fixed to the first carrier plate 9 and the second carrier plate 10, respectively. After the connecting bracket 104 rotates 180 degrees, the first carrier plate 9 will rotate to the bottom of the connecting bracket 104, and the second carrier plate 10 will rotate to the top of the connecting bracket 104, thus completing the position switching of the two carrier plates. The switching is used to support the front and back of the part. A servo motor 101 for driving the rotation of the connecting bracket 104 is fixed to one outer wall of the flip bracket 103 by bolts. It should be noted that the servo motor 101 is existing technology. The servo motor 101 is a servo motor 101 with an encoder added. The number of rotations and rotation angle of the motor output shaft are controllable and have high precision. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0032] A hydraulic cylinder 102 is fixed to the bottom outer wall of the housing 6 by bolts. The telescopic end of the hydraulic cylinder 102 passes through the housing 6 and is fixed to the flipping bracket 103. The hydraulic cylinder 102 is used to drive the flipping bracket 103 to move up and down. When the first carrier plate 9 and the second carrier plate 10 need to be flipped, the hydraulic cylinder 102 drives the flipping bracket 103 to move down as a whole, so that the first carrier plate 9 is separated from the slot 8, and avoids the flipping of the first carrier plate 9 and the second carrier plate 10, so as to prevent the first carrier plate 9 from colliding with the housing 6 during the flipping, and ensure that the flipping action can be completed smoothly.

[0033] It should be noted that the hydraulic cylinder 102 in this application is an actuator in a hydraulic system. It achieves the telescopic function by cooperating with the hydraulic system, and achieves precise control of the telescopic displacement of the hydraulic cylinder piston rod by cooperating with a magnetic switch, proximity switch or photoelectric switch. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0034] The top and bottom of the connecting bracket 104 are provided with clamping assemblies 5 for fixing parts. The clamping assembly 5 includes a first pneumatic chuck 501 and a second pneumatic chuck 502 respectively provided at the top and bottom of the connecting bracket 104. The jaws of the first pneumatic chuck 501 and the second pneumatic chuck 502 pass through the through slots 12 of the first carrier plate 9 and the second carrier plate 10 respectively. The first pneumatic chuck 501 and the second pneumatic chuck 502 are used to clamp the aerospace parts on the first carrier plate 9 and the second carrier plate 10 respectively. The multiple jaws of the first carrier plate 9 and the second carrier plate 10 can extend into the through hole b of the part to clamp and fix the part at the through hole b position, ensuring that the part will not be displaced during processing, and also ensuring that the part can remain stable during the flipping process and will not fall off.

[0035] It should be noted that both the first pneumatic chuck 501 and the second pneumatic chuck 502 are existing technologies. Both the first pneumatic chuck 501 and the second pneumatic chuck 502 drive the internal piston with compressed air and use inclined plane or linkage mechanism to convert the linear motion of the piston into the radial motion of the chuck, thereby realizing the rapid clamping and release of the workpiece. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0036] The housing 6 is equipped with a part clamping and flipping system 3. The part clamping and flipping system 3 is used to grab and flip the part on the first carrier plate 9 and place it on the second carrier plate 10. The part clamping and flipping system 3 includes a finger cylinder 304 set inside the housing 6. The two claws of the finger cylinder 304 are each fixed with a clamping block 305 by bolts. The two clamping blocks 305 are provided with grooves 306 on opposite sides. The width of the grooves 306 is adapted to the thickness of the part, which can stably clamp the two sides of the part. When the finger cylinder 304 is activated, the finger cylinder 304 drives the two clamping blocks 305 to move closer to each other, so that the grooves 306 clamp the sides of the part, thus completing the clamping of the part. It should be noted that the finger cylinder 304 in this application is an actuator specifically designed for gripping operations. Its core components include a cylinder body, piston, piston rod, end cap, and gripper. It is an energy conversion device that converts the pressure energy of compressed air into the linear mechanical energy of the piston, and then converts the linear mechanical energy into the clamping and releasing mechanical energy of the gripper through an internal inclined plane or linkage mechanism. Those skilled in the art can configure it according to actual needs, which will not be elaborated here.

[0037] A linear motor 301 is fixed to one side of the outer wall of the housing 6 by bolts. A rotary cylinder 302 is fixed to one side of the actuator of the linear motor 301 by bolts. The linear motor 301 is used to drive the rotary cylinder 302 and the finger cylinder 304 to move downwards. When placing the workpiece, the rotary cylinder 302 forms a downward clearance. The rotating end of the rotary cylinder 302 is fixed with a connecting frame 303 by bolts. The connecting frame 303 is fixed with the finger cylinder 304. The rotary cylinder 302 rotates with the finger cylinder 304, thereby causing the clamped part to complete a 180-degree flip, so that the unprocessed side of the part exchanges positions with the processed side.

[0038] It should be noted that the rotary cylinder 302 and the linear motor 301 are existing technologies. The rotary cylinder 302 converts the linear reciprocating motion of the piston into the rotational motion of the rotary shaft through the internal spiral groove or inclined groove structure, or conversely converts the linear displacement driven by air pressure into torque output. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0039] A part gripping system 4 for transferring parts is provided on one side of the outer wall of the housing 6. The part gripping system 4 includes a second cylinder 401 fixed to the outer wall of one side of the housing 6 by bolts. The telescopic end of the second cylinder 401 passes through the housing 6 and is fixed to a support plate 402 by bolts. The second cylinder 401 is used to push the support plate 402 to move closer to the part. Two symmetrically arranged first electromagnets 403 and two symmetrically arranged second electromagnets 404 are fixed to one side of the support plate 402 by bolts. The two first electromagnets 403 are located inside the two second electromagnets 404. The two second electromagnets 404 are used to attract the parts before flipping (see reference). Figure 11 Two first electromagnets 403 are used to attract the flipped parts (see reference). Figure 12 ); One side of the first electromagnet 403 is lower than one side of the second electromagnet 404, thereby ensuring that when the second electromagnet 404 attracts a part, the first electromagnet 403 will not come into contact with or collide with the part, and will not interfere with the attraction action of the second electromagnet 404 (see reference). Figure 12 ); First, start the hydraulic cylinder 102 to drive the flipping bracket 103 to move downward, so that the first carrier plate 9 and the aerospace parts processed on it are retracted into the housing 6 until the parts are lower than the slot 8, leaving space for subsequent flipping actions. Then start the servo motor 101 to drive the connecting bracket 104 to rotate 90 degrees, so that the first carrier plate 9 and the parts rotate toward the finger cylinder 304. Then, the second cylinder 401 is activated to push the support plate 402 toward the part, so that the second electromagnet 404 is in contact with the part on the side close to the support plate 402. Then the second electromagnet 404 is energized and uses magnetic force to firmly attract the part. At this time, the first pneumatic clamp 501 is activated to release the part from the fixation. The extension end of the second cylinder 401 retracts, causing the support plate 402 and the adsorbed part to move between the two clamping blocks 305 of the finger cylinder 304. Then the finger cylinder 304 is activated, causing the grooves 306 of the two clamping blocks 305 to clamp the side of the part. The second electromagnet 404 is de-energized to release the adsorption, and the second cylinder 401 drives the support plate 402 to retract. Next, the rotary cylinder 302 is started, which drives the connecting frame 303 to rotate, thereby causing the clamped part to complete a 180-degree flip, so that the unprocessed reverse side of the part faces upward. While flipping, the servo motor 101 is started to flip the second carrier plate 10 to the side facing the finger cylinder 304; Then the second cylinder 401 is activated to push the support plate 402 toward the part, so that the first electromagnet 403 comes into contact with the part. Then the first electromagnet 403 is energized to attract the part, and the finger cylinder 304 releases the clamp. Then, the linear motor 301 is started, which drives the rotary cylinder 302 and the finger cylinder 304 to move downward as a whole, making room for the second cylinder 401 to push the support plate 402 with the adsorbed part to move onto the second carrier plate 10. Then, the second cylinder 401 is started to push the support plate 402 to place the flipped part onto the surface of the second carrier plate 10, and the second pneumatic clamp 502 is started to clamp and fix the part through the through slot 12 of the second carrier plate 10. The first electromagnet 403 is de-energized to release the adsorption. Then, the second cylinder 401 is activated to drive the support plate 402 back. Next, the linear motor 301 and the finger cylinder 304 are activated to reset. At the same time, the servo motor 101 is activated to rotate the connecting bracket 104 in the opposite direction by 90 degrees, so that the second carrier plate 10 and the fixed parts are restored to a horizontal state. Finally, the hydraulic cylinder 102 pushes the flipping bracket 103 to move upward as a whole, and sends the second carrier plate 10 and the parts out of the slot 8 of the housing 6, thus completing the automatic flipping of the parts.

[0040] It should be noted that during the milling process, an external vacuum cleaner is used to remove the chips and dust generated during processing, so as to prevent chips from accumulating on the surface of the first carrier plate 9 or the second carrier plate 10.

[0041] Each of the two first electromagnets 403 and the second electromagnet 404 has a first-shaped groove 405 on the side away from the support plate 402. The first-shaped groove 405 is adapted to the contour shape of the part, and can better fit the contour of the part, further improving the stability during adsorption and preventing the part from sliding or shifting during the transfer process (see reference). Figure 11 and Figure 12 During adsorption, the edge of the part is inserted into the first groove 405, which can limit the position of the part.

[0042] It should be noted that the first electromagnet 403 and the second electromagnet 404 are both existing technologies. The first electromagnet 403 and the second electromagnet 404 use the magnetic field generated by the energized coil to magnetize the iron core, thereby generating magnetic force. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0043] The two sides of the aircraft part a are respectively provided with a first protrusion c and a second protrusion d, and a through hole b is opened in the middle of the aircraft part a; Both the first carrier plate 9 and the second carrier plate 10 have through slots 12 on their tops. The first carrier plate 9 has a second groove 902 on its top. The second groove 902 is adapted to the unmilled first protrusion c. The first protrusion c can be inserted into the second groove 902. The rest of the part is in contact with the first carrier plate 9. The first carrier plate 9 provides stable support for the part, preventing it from shaking when placed. It also prevents the part from bending due to the milling cutter pressing down during milling. The second protrusion b is located on top, making it convenient for the milling cutter to directly process the second protrusion b. The top of the second carrier plate 10 is provided with a third groove 1001, which is adapted to the milled second protrusion b, so that the milled second protrusion b can be inserted into the third groove 1001. After the milled second protrusion b is inserted into the third groove 1001, the rest of the part can be stably attached to the top surface of the second carrier plate 10. At this time, the first protrusion c faces upward, which makes it easy for the milling cutter to directly process the first protrusion c. While ensuring the stability of the part, it will not cause squeezing damage to the already processed second protrusion b, effectively protecting the processed surface and improving the quality of the finished product after the part is processed.

[0044] During machining, the rest of the part will block the second type groove 902 or the third type groove 1001, thereby preventing the milling from falling directly into the second type groove 902 or the third type groove 1001 and being difficult to clean. Meanwhile, the inclined housing 6 tilts all internal parts, allowing the chips generated during milling to slide out automatically along the inclined housing 6, thus preventing chips from accumulating inside the housing 6.

[0045] The top of both the first carrier plate 9 and the second carrier plate 10 are welded with two symmetrically arranged limiting strips 11. The limiting strips 11 are adapted to the contour shape of the part and limit the side of the part placed on the first carrier plate 9 and the second carrier plate 10, further preventing the part from shifting laterally during processing and improving the stability of the part clamping. A side support plate 901 is welded to the top edge of the first carrier plate 9. The side support plate 901 contacts the edge of the second protrusion b, thereby providing additional support for the side of the part and preventing the part extending out of the first carrier plate 9 from deforming due to the pressure of the milling cutter during processing.

[0046] The top of the second carrier plate 10 has two symmetrically arranged sliding grooves 14, and a top block 13 is slidably connected in the sliding grooves 14. The bottom of the second carrier plate 10 has two symmetrically arranged first cylinders 15 fixed by bolts, and one end of the first cylinder 15 passes through the second carrier plate 10 and is fixed to the top block 13. The first cylinder 15 is used to push the top block 13 to move upward. After the top block 13 extends upward, it can lift the part from the surface of the second carrier plate 10, which makes it convenient for workers or robots to unload the part after processing, without having to manually pick up the part, thus improving the convenience of unloading.

[0047] It should be noted that the first cylinder 15 and the second cylinder 401 in this application are both power actuators that convert the pressure energy of compressed air into mechanical energy. They can be connected to external air pipes and solenoid valves and drive the piston to perform linear reciprocating motion by controlling the gas inlet and outlet. They can be used in conjunction with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the cylinder piston rod extension and retraction displacement. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0048] The top of the housing 6 is provided with a positioning component 2 for limiting the first carrier plate 9 and the second carrier plate 10. The positioning component 2 includes multiple positioning grooves 201 that are equidistantly distributed on the inner wall of the top of the housing 6. Two symmetrically arranged protrusions 203 are welded to both sides of the first carrier plate 9 and the second carrier plate 10. A positioning pin 202 that is inserted into the positioning groove 201 is welded to one side of the protrusion 203. When the first carrier plate 9 and the second carrier plate 10 are pushed into the slot 8 and extended, the flipping bracket 103 drives the first carrier plate 9 or the second carrier plate 10 to move upward, so that the multiple positioning pins 202 on the first carrier plate 9 or the second carrier plate 10 are inserted into the positioning groove 201, thereby achieving precise positioning of the first carrier plate 9 or the second carrier plate 10 and avoiding lateral displacement of the first carrier plate 9 or the second carrier plate 10 during the processing.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A fixed fixture for CNC milling of aerospace forging parts, comprising a mounting frame (7), wherein an inclined housing (6) is mounted on the top of the mounting frame (7), characterized in that, The housing (6) is provided with a first carrier plate (9) and a second carrier plate (10) inside. The first carrier plate (9) and the second carrier plate (10) are respectively used to support the two sides of the part. The top of the housing (6) is provided with a slot (8), which is adapted to the first carrier plate (9) and the second carrier plate (10). The housing (6) is provided with a working surface flipping system (1) for switching between the first carrier plate (9) and the second carrier plate (10), and the housing (6) is provided with a part clamping and flipping system (3). The part clamping and flipping system (3) is used to grab the part on the first carrier plate (9), flip it and place it on the second carrier plate (10); The working surface flipping system (1) includes a flipping bracket (103) disposed inside the housing (6). A connecting bracket (104) is rotatably connected between the inner walls of the two sides of the flipping bracket (103) via bearings. The top and bottom of the connecting bracket (104) are fixed to the first carrier plate (9) and the second carrier plate (10) respectively. A servo motor (101) for driving the connecting bracket (104) to rotate is fixedly connected to one side of the outer wall of the flipping bracket (103). A hydraulic cylinder (102) is fixedly connected to the bottom outer wall of the housing (6). The telescopic end of the hydraulic cylinder (102) passes through the housing (6) and is fixed to the flipping bracket (103). The top and bottom of the connecting bracket (104) are provided with clamping components (5) for fixing parts. The top of the housing (6) is provided with a positioning component (2) for limiting the first carrier plate (9) and the second carrier plate (10).

2. The fixed fixture for CNC milling of aerospace forging parts according to claim 1, characterized in that, The part clamping and flipping system (3) includes a finger cylinder (304) disposed inside the housing (6). The two gripper ends of the finger cylinder (304) are fixedly connected to a clamping block (305). The two clamping blocks (305) are provided with grooves (306) on opposite sides. A linear motor (301) is fixedly connected to one side of the outer wall of the housing (6). A rotary cylinder (302) is fixedly connected to one side of the actuator of the linear motor (301). A connecting frame (303) is fixedly connected to the rotating end of the rotary cylinder (302). The connecting frame (303) is fixed to the finger cylinder (304). A part gripping system (4) for transferring parts is provided on one side of the outer wall of the housing (6).

3. A fixing fixture for CNC milling of aerospace forging parts according to claim 2, characterized in that, The part gripping system (4) includes a second cylinder (401) fixedly connected to the outer wall of one side of the housing (6). The telescopic end of the second cylinder (401) passes through the housing (6) and is fixedly connected to a support plate (402). Two symmetrically arranged first electromagnets (403) and two symmetrically arranged second electromagnets (404) are fixedly connected to one side of the support plate (402). One side of the first electromagnet (403) is lower than one side of the second electromagnet (404), and the two first electromagnets (403) are located inside the two second electromagnets (404).

4. A fixed fixture for CNC milling of aerospace forging parts according to claim 3, characterized in that, Each of the two first electromagnets (403) and the second electromagnet (404) has a first groove (405) on the side away from the support plate (402), and the first groove (405) is adapted to the outline shape of the part.

5. A fixing fixture for CNC milling of aerospace forging parts according to claim 1, characterized in that, Both the first carrier plate (9) and the second carrier plate (10) have through grooves (12) on their tops. The first carrier plate (9) has a second groove (902) on its top, and the second carrier plate (10) has a third groove (1001) on its top.

6. A fixed fixture for CNC milling of aerospace forging parts according to claim 1, characterized in that, The top of the second carrier plate (10) has two symmetrically arranged sliding grooves (14), and a top block (13) is slidably connected in the sliding grooves (14). The bottom of the second carrier plate (10) is fixedly connected to two symmetrically arranged first cylinders (15), and one end of the first cylinder (15) passes through the second carrier plate (10) and is fixed to the top block (13).

7. A fixing fixture for CNC milling of aerospace forging parts according to claim 5, characterized in that, The top of the first carrier plate (9) and the second carrier plate (10) are fixedly connected with two symmetrically arranged limiting strips (11), which are adapted to the contour shape of the part. A side support plate (901) is fixedly connected to the top edge of the first carrier plate (9).

8. A fixed fixture for CNC milling of aerospace forging parts according to claim 1, characterized in that, The positioning component (2) includes multiple equidistant positioning grooves (201) opened on the inner wall of the top of the housing (6). Two symmetrically arranged protrusions (203) are fixedly connected to both sides of the first carrier plate (9) and the second carrier plate (10). A positioning pin (202) that is inserted into the positioning groove (201) is fixedly connected to one side of the protrusion (203).

9. A fixing fixture for CNC milling of aerospace forging parts according to claim 5, characterized in that, The clamping assembly (5) includes a first pneumatic chuck (501) and a second pneumatic chuck (502) respectively disposed on the top and bottom of the connecting bracket (104), and the grippers of the first pneumatic chuck (501) and the second pneumatic chuck (502) pass through the through slot (12) of the first carrier plate (9) and the through slot (12) of the second carrier plate (10) respectively.

Images