A semi-solid aluminum alloy die casting tail cutting clamp

Abstract

The application belongs to the field of die casting processing equipment and provides a semi-solid aluminum alloy die casting tail cutting clamp, which comprises a clamping table, a rotary table, a clamping table, a self-locking support mechanism and an upper clamping mechanism. The self-locking support mechanism is arranged in an array on the clamping table and can be self-adaptively attached to the irregular bottom surface of a die casting and self-locked to form a rigid support. The upper clamping mechanism is provided at the bottom with a flexible clamping bag containing a non-Newtonian fluid to realize flexible uniform pressure clamping of the upper surface of a workpiece. The rotary drive assembly and the adjusting drive assembly can realize automatic fine adjustment of the angle and position of the workpiece without manual precise alignment. The application solves the technical problems of the traditional clamp, such as the inability to adapt to special-shaped die castings, the suspension support, the easy deformation of the workpiece, the low cutting precision and the low discharging efficiency. Through the composite structure of self-adaptive flexible attachment, rigid self-locking support, flexible non-damage compression and automatic fine adjustment alignment, the precision, stability and production efficiency of special-shaped die casting tail cutting are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of die casting processing equipment, and particularly relates to a semi-solid aluminum alloy die casting tail material cutting fixture. Background Technology

[0002] Semi-solid aluminum alloy die castings are widely used in automotive parts, new energy components, and precision hardware due to their advantages of dense structure, high strength, good forming accuracy, and excellent wall thickness uniformity. After the die casting is formed, the material stalk, overflow port, and other tail material need to be removed through a cutting process, and the fixture is the core tooling to ensure cutting accuracy and workpiece quality.

[0003] Currently, traditional aluminum alloy die casting tail material cutting fixtures mostly adopt fixed rigid support and integral rigid pressure plate clamping structure, which has many technical defects: First, the fixture support surface is a fixed plane, which cannot be adapted to the irregular curved surface and uneven bottom surface of semi-solid aluminum alloy die castings. After the workpiece is placed, there is a gap, which is prone to vibration and displacement during the cutting process, resulting in problems such as skewed cut, excessive burrs, and uneven tail material residue, resulting in a low yield rate. Second, the rigid pressure plate concentrates stress clamping, which can easily cause thin-walled aluminum alloy castings to be crushed, warped, deformed, and misaligned, damaging the forming accuracy of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to provide a semi-solid aluminum alloy die-casting tail material cutting fixture, which aims to solve the technical problems of poor rigidity adaptation, suspended support of irregular workpieces, easy deformation during clamping, and low cutting accuracy in the prior art.

[0005] The present invention is implemented as follows: a semi-solid aluminum alloy die casting tail material cutting fixture includes a clamping platform, a rotary table rotatably mounted on the clamping platform, a clamping platform slidably assembled on the rotary table, and multiple sets of self-locking support mechanisms uniformly arrayed on the surface of the clamping platform. The self-locking support mechanisms can adaptively expand and contract to fit the irregular bottom surface of the die casting. After the workpiece is placed in place, mechanical self-locking is achieved through electromagnetic control, switching from a flexible fitting state to a rigid support state, eliminating the workpiece suspension gap.

[0006] An upper clamping mechanism is fixedly mounted on the clamping platform. The upper clamping mechanism drives the pressure plate to rise and fall through the telescopic rod. A flexible clamping bag filled with non-Newtonian fluid is set at the bottom of the pressure plate. It can adapt to the concave and convex shape of the upper surface of the die casting, conform to the workpiece surface in the whole area, realize uniform pressure and flexible clamping, and avoid rigid extrusion damage to the workpiece.

[0007] A cutting hole is provided in the middle of the clamping table to avoid the cutting tool, so that the tool can cut the tail material extending above the cutting hole from the top and bottom. The rotary table is equipped with a rotary drive component, which can drive the workpiece to make fine adjustments to the circumferential angle. The clamping table is equipped with an adjustment drive component, which can make fine adjustments to the horizontal position of the workpiece, eliminating the need for precise manual alignment and greatly simplifying the unloading operation.

[0008] The core of the self-locking support mechanism includes an outer cylinder, an inner rod, a first compression spring, and a self-locking mechanism. The inner rod can elastically extend and retract to adapt to the workpiece surface. The self-locking mechanism drives the extrusion block to press against the pressure pad through the top pressure component, and uses high friction to lock the position of the inner rod, realizing the switch from flexible fitting to rigid support.

[0009] The top-pressing assembly adopts an electromagnetic linkage mechanical structure. The electromagnetic attraction drives the guide bar to move, and the inclined plane drives the top column to be lifted. The radial ejection of the extrusion block achieves self-locking. After the power is cut off, the spring resets and the inner rod automatically rebounds to reset. The structure is simple, the response is fast, and the stability is strong.

[0010] Further technical solution: The self-locking support mechanism includes an outer cylinder, which is embedded inside the clamping platform. The top of the outer cylinder is flush with the surface of the clamping platform. An inner rod is slidably installed inside the outer cylinder. A first compression spring is connected between the bottom of the inner rod and the outer cylinder. A self-locking mechanism is also provided between the outer cylinder and the inner rod. The self-locking mechanism is used to fix the inner rod on the outer cylinder so that the inner rod and the outer cylinder are relatively fixed, thereby providing rigid support for the die-casting part.

[0011] Further technical solution: The self-locking mechanism includes multiple pressure pads and multiple mounting grooves opened on the side wall of the inner rod. The pressure pads are embedded in the strip-shaped grooves opened on the inner wall of the outer cylinder. Each mounting groove has a pressing block slidably installed. A second compression spring is connected between the pressing block and the inner rod. The pressing block is an arc-shaped block. The outer diameter of the pressing block is equal to the inner diameter of the pressure pad. The pressure pad is located on the side of the pressing block. The inner wall of the pressure pad and the contact surface of the pressing block are both made of a material with a high coefficient of friction, or the contact surfaces are sprayed with a high coefficient of friction anti-slip coating to improve the self-locking stability.

[0012] The self-locking mechanism also includes a pressing assembly, which is installed on the outer cylinder and the inner rod. The pressing assembly is used to drive all the extrusion blocks to slide outward so that the extrusion blocks and the pressure pads come into contact. Under a large frictional force, the inner rod and the outer cylinder are relatively fixed, thereby realizing the self-locking of the inner rod.

[0013] Further technical solution: The top-pressing assembly includes a top column, a guide strip, a tension spring, an iron block, and a strip electromagnet. The inner rod has a movable groove inside, and the top column is slidably installed within the movable groove. The movable groove is located between and connected to multiple mounting grooves. The top of the top column is conical, and a through hole is provided at the bottom of its side. The inner rod also has a mounting groove on its side, which is perpendicular to the movable groove. The middle of the mounting groove communicates with the movable groove. The guide strip is slidably installed within the mounting groove and passes through the through hole. A convex cone is provided at the top of the through hole, and a ramp adapted to the convex cone is provided on the guide strip. A tension spring connects one end of the guide strip to the mounting groove. The iron block is fixedly installed at the other end of the guide strip. A mounting shell is fixedly installed on the side of the outer cylinder, and the strip electromagnet is fixedly installed inside the mounting shell. A slot for the iron block to extend is provided on the side of the outer cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. Adaptive rigid support with excellent adaptability: This invention adopts an array-type self-locking support mechanism, which can independently extend and fit the irregular and uneven bottom surface of the die-casting part, eliminating the blind spots of traditional fixture suspension support; after fitting, it automatically locks to form rigid support, taking into account both irregular adaptability and cutting rigidity stability, completely solving the problems of workpiece cutting vibration and offset, and greatly improving the flatness of the cut and dimensional accuracy.

[0016] 2. Flexible pressure equalization clamping, no workpiece damage: The non-Newtonian fluid flexible clamp is used as the clamping end, which can adaptively fill the depressions on the upper surface of the workpiece and conform to the curved surface to achieve uniform pressure clamping throughout the entire area. There is no concentrated stress, which effectively avoids the pressure depression, warping and deformation of thin-walled aluminum alloy die castings, eliminates clamping damage, and ensures the forming accuracy of the workpiece.

[0017] 3. Dual-dimensional fine-tuning significantly improves production efficiency: Equipped with both rotary fine-tuning and horizontal sliding fine-tuning mechanisms, the workpiece does not require precise manual alignment. After rough placement, the machine can automatically fine-tune the angle and position of the tail material to accurately adapt to the cutting station, greatly shortening the material placement and alignment time, reducing the difficulty of manual operation, and adapting to mass production.

[0018] 4. Stable structural linkage and high degree of automation: The structure features adaptive fitting, rigid self-locking, flexible pressing, and position fine-tuning, with multiple structures working together to ensure smooth process connection. The self-locking and reset are purely mechanically linked by electromagnetic control, resulting in fast response and low failure rate. No manual locking and fixing is required, simplifying the operation process and improving production cycle.

[0019] 5. Wide versatility and low modification cost: It can be adapted to the cutting of various flat, curved, irregular, and thin-walled semi-solid aluminum alloy die-cast parts without the need to change the fixture. The changeover is convenient. Compared with traditional special custom fixtures, it greatly reduces tooling costs and has strong adaptability and practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front view of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall bottom view of the present invention.

[0022] Figure 3 This is a front view cross-sectional schematic diagram of the self-locking support mechanism in this invention.

[0023] Figure 4 In this invention Figure 3 Enlarged diagram of point A in the middle.

[0024] Figure 5 This is a side view cross-sectional diagram of the self-locking support mechanism in this invention.

[0025] Figure 6 In this invention Figure 5 Enlarged diagram of point B in the middle.

[0026] In the attached diagram: 1. Clamping platform; 2. Rotary table; 3. Self-locking support mechanism; 31. Inner rod; 32. Mounting slide; 33. Bar electromagnet; 34. First compression spring; 35. Pressure pad; 36. Slot; 37. Outer cylinder; 38. Mounting shell; 39. Extrusion block; 310. Top column; 311. Movable groove; 312. Iron block; 313. Guide bar; 314. Through hole; 315. Convex cone; 316. Slope; 317. 318. Tension spring; 319. Mounting groove; 320. Limiting groove; 321. Limiting strip; 3222. Second compression spring; 4. Clamping table; 5. Upper clamping mechanism; 51. Telescopic rod; 52. Fixing frame; 53. Pressure plate; 54. Flexible clamp; 6. Rotary drive assembly; 61. Worm gear; 62. Worm; 63. Rotary servo motor; 7. Adjustment drive assembly; 71. Adjustment servo motor; 72. Lead screw; 8. Cutting hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] like Figures 1-6 As shown, this invention provides a semi-solid aluminum alloy die casting tail material cutting fixture, including a clamping platform 1, a clamping table 4 installed on the clamping platform 1, and multiple self-locking support mechanisms 3 installed on the clamping table 4. The self-locking support mechanisms 3 are used to provide adaptive support for the die casting, and after the die casting is completely placed on the clamping table 4, the self-locking support mechanisms 3 can self-lock to provide rigid support for the die casting to adapt to the irregular surface of the die casting.

[0030] The clamping platform 1 is also equipped with an upper clamping mechanism 5. The output end of the upper clamping mechanism 5 is located above the clamping platform 4. The upper clamping mechanism 5 is used to flexibly clamp the die casting to make the die casting clamp more stable and firm. The output end of the upper clamping mechanism 5 is a flexible surface, which can deform according to the surface of the die casting, so as to clamp various irregular die castings.

[0031] The clamping platform 1 is also provided with a cutting hole 8. When in use, the die-casting tail material is extended above the cutting hole 8, and the cutting tool cuts the tail material from below or above the cutting hole 8.

[0032] Specifically, during use, the die-cast part is placed on the clamping table 4, and the die-cast part is supported by all the self-locking support mechanisms 3. Then, the position of the die-cast part is adjusted so that the tail of the die-cast part extends above the cutting hole 8. Then, the self-locking support mechanism 3 is locked to make the die-cast part stably placed on the clamping table 4. Finally, the die-cast part is flexibly clamped from above by the upper clamping mechanism 5 to fix the die-cast part, and then the tail can be cut.

[0033] The present invention provides a semi-solid aluminum alloy die casting tail material cutting fixture. In this embodiment, multiple self-locking support mechanisms 3 are evenly distributed on the clamping table 4 to support multiple points of the die casting, making the die casting more stable.

[0034] The present invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, the self-locking support mechanism 3 includes an outer cylinder 37, which is embedded inside the clamping platform 4. The top of the outer cylinder 37 is flush with the surface of the clamping platform 4. An inner rod 31 is slidably installed inside the outer cylinder 37. A first compression spring 34 is connected between the bottom of the inner rod 31 and the outer cylinder 37. A self-locking mechanism is also provided between the outer cylinder 37 and the inner rod 31. The self-locking mechanism is used to fix the inner rod 31 on the outer cylinder 37 so that the inner rod 31 and the outer cylinder 37 are relatively fixed, thereby providing rigid support for the die-casting.

[0035] Specifically, the inner wall of the outer cylinder 37 is fixedly connected to a limiting strip 320, and the inner rod 31 is provided with a limiting groove 319 that is adapted to the limiting strip 320. The limiting strip 320 is slidably installed in the limiting groove 319.

[0036] This invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, the self-locking mechanism includes multiple pressure pads 35 and multiple mounting grooves 32 opened on the side wall of the inner rod 31. The pressure pads 35 are embedded in the strip-shaped grooves opened on the inner wall of the outer cylinder 37. Each mounting groove 32 has a pressing block 39 slidably installed in it. A second compression spring 321 is connected between the pressing block 39 and the inner rod 31. The pressing block 39 is an arc-shaped block. The outer diameter of the pressing block 39 is equal to the inner diameter of the pressure pad 35. The pressure pads 35 are located on the side of the pressing block 39. The inner wall of the pressure pad 35 and the contact surface of the pressing block 39 are both made of a material with a high coefficient of friction, or the contact surfaces are sprayed with a high coefficient of friction anti-slip coating to improve the self-locking stability.

[0037] The self-locking mechanism also includes a pressing assembly, which is installed on the outer cylinder 37 and the inner rod 31. The pressing assembly is used to drive all the pressing blocks 39 to slide outward so that the pressing blocks 39 and the pressure pad 35 come into contact. Under a large frictional force, the inner rod 31 and the outer cylinder 37 are relatively fixed, thereby realizing the self-locking of the inner rod 31.

[0038] Specifically, initially, one end of the inner rod 31 extends out of the outer cylinder 37.

[0039] Multiple compression blocks 39 and multiple pressure pads 35 are evenly distributed around the axis of the inner rod 31, thereby making the frictional force between the inner rod 31 and the outer cylinder 37 evenly distributed and improving the stability and firmness between the inner rod 31 and the outer cylinder 37.

[0040] After the die-cast part is placed on the clamping table 4, the die-cast part will drive the inner rod 31 to descend. According to the unevenness of the die-cast part surface, the height of the multiple inner rods 31 is different. Then, the top pressing assembly drives all the extrusion blocks 39 to move to the outside of the inner rod 31 and presses the extrusion blocks 39 onto the pressure pad 35, thereby fixing the inner rod 31 and the outer cylinder 37 relatively.

[0041] This invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, the top-pressing assembly includes a top column 310, a guide bar 313, a tension spring 317, an iron block 312, and a bar electromagnet 33. The inner rod 31 has a movable groove 311 inside, and the top column 310 is slidably installed in the movable groove 311. The movable groove 311 is located between and communicates with multiple mounting grooves 32. The top of the top column 310 is conical, and a through hole 314 is provided at the bottom of its side. The inner rod 31 also has a mounting groove 318 on its side, which is perpendicular to the movable groove 311. The middle part of the groove 318 is connected to the movable groove 311. The guide strip 313 is slidably installed in the mounting groove 318 and passes through the through hole 314. The top of the through hole 314 is provided with a protruding cone 315. The guide strip 313 is provided with a ramp 316 adapted to the protruding cone 315. One end of the guide strip 313 is connected to the mounting groove 318 with a tension spring 317. The iron block 312 is fixedly installed at the other end of the guide strip 313. The side of the outer cylinder 37 is fixedly installed with a mounting shell 38. The bar electromagnet 33 is fixedly installed inside the mounting shell 38. The side of the outer cylinder 37 is provided with a slot 36 for the iron block 312 to extend out.

[0042] Specifically, the width of the slot 36 is greater than the diameter of the iron block 312.

[0043] After the die-cast parts are placed and all the inner rods 31 are stable, the power supply of the bar electromagnet 33 is turned on. The bar electromagnet 33 generates an attraction force on the iron block 312 and drives the iron block 312 to move. The iron block 312 drives the guide bar 313 to move. The ramp 316 on the guide bar 313 pushes the top column 310 to rise. The top column 310 pushes all the extrusion blocks 39 to move outward, so that the extrusion blocks 39 contact the pressure pad 35 and fix the inner rods 31.

[0044] After cutting is completed, when it is necessary to restore the self-locking support mechanism 3, the power supply of the bar electromagnet 33 is cut off. Under the action of the tension spring 317, the ramp 316 drives the iron block 312 to retract into the mounting groove 318. Under the action of the second compression spring 321, the pressing block 39 retracts into the mounting slide 32. The pressing block 39 moves away from the pressure pad 35, and under the action of the first compression spring 34, the inner rod 31 returns to its original position, waiting for the next processing.

[0045] This invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, a rotary table 2 is rotatably mounted on the clamping platform 1, and a clamping table 4 is mounted on the rotary table 2. A rotary drive assembly 6 is mounted on the clamping platform 1, and the output end of the rotary drive assembly 6 is connected to the rotary table 2. The rotary drive assembly 6 is used to drive the rotary table 2 to rotate, thereby driving the clamping table 4 and the die-casting part to rotate. When placing the die-casting part, precise positioning is not required. After placement, the angle and direction of the tail material can be adjusted through the rotary table 2 to precisely cut the tail material and save material unloading time.

[0046] The present invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, the rotary drive assembly 6 includes a rotary servo motor 63, a worm gear 62, and a worm wheel 61. The rotary servo motor 63 is fixedly mounted on the clamping table 1, the worm wheel 61 is fixedly mounted on the rotary table 2, the worm gear 62 is fixedly connected to the output shaft of the rotary servo motor 63, and the worm gear 62 and the worm wheel 61 are meshed together.

[0047] Start the rotary servo motor 63. The rotary servo motor 63 can drive the worm wheel 61 to rotate through the worm 62. The worm wheel 61 drives the rotary table 2 to rotate, which can finely adjust the angle of the die casting.

[0048] The present invention provides a semi-solid aluminum alloy die-casting tail material cutting fixture. In this embodiment, the clamping table 4 is slidably mounted on the rotary table 2. The rotary table 2 is also equipped with an adjustment drive component 7. The output end of the adjustment drive component 7 is connected to the clamping table 4. The adjustment drive component 7 is used to drive the clamping table 4 to move, so as to adjust the position of the tail material so that the tail material extends above the cutting hole 8. When placing, there is no need to accurately place the die-casting part. After placement, the die-casting part can be finely adjusted. Therefore, the placement time of the die-casting part can be further saved.

[0049] The present invention provides a semi-solid aluminum alloy die casting tail material cutting fixture. In this embodiment, the adjustment drive assembly 7 includes an adjustment servo motor 71 fixedly installed on the rotary table 2. The output shaft of the adjustment servo motor 71 is fixedly connected to a lead screw 72, and the lead screw 72 is threadedly connected to the clamping table 4.

[0050] The servo motor 71 can drive the clamping table 4 to move via the lead screw 72. The clamping table 4 can drive the die casting to move, thereby adjusting the distance between the die casting tail and the cutting tool, thus achieving high cutting accuracy.

[0051] The present invention provides a semi-solid aluminum alloy die casting tail material cutting fixture. In this embodiment, the upper clamping mechanism 5 includes a fixed frame 52 fixedly connected to the clamping platform 1. A telescopic rod 51 is fixedly installed on the fixed frame 52. A pressure plate 53 is fixedly connected to the movable end of the telescopic rod 51. A flexible clamping bag 54 is provided at the bottom of the pressure plate 53. The flexible clamping bag 54 is filled with a non-Newtonian fluid.

[0052] Specifically, the flexible pouch 54 is a cube made of non-elastic fabric, such as linen, polyester, or non-woven fabric. The inner layer of the flexible pouch 54 is provided with a waterproof coating or waterproof cloth to prevent leakage of non-Newtonian fluids.

[0053] In use, place the die-cast part and lock the self-locking support mechanism 3. Then, activate the telescopic rod 51. The telescopic rod 51 drives the fixed frame 52 and the flexible clamp 54 to descend. The flexible clamp 54 presses against the upper surface of the die-cast part, and the surface of the flexible clamp 54 will deform according to the surface of the die-cast part to fill the depressions in the die-cast part. Then, the pressure plate 53 will flatten the non-Newtonian fluid to generate the same pressure on all points of the die-cast part. When the flexible clamp 54 fills the depressions, it will also restrict the die-cast part from moving forward, backward, left, and right, thereby avoiding the die-cast part from shaking during the cutting process, which would reduce the cutting accuracy.

[0054] Usage steps:

[0055] S1. Equipment standby initialization: When the equipment is powered on, all structures are reset. The inner rod 31 of the self-locking support mechanism 3 extends under the action of the first compression spring 34, the extrusion block 39 retracts under the action of the second compression spring 321, the bar electromagnet 33 is de-energized, and the whole is in an adaptive fit standby state; the telescopic rod 51 is in a retracted and raised state, reserving space for workpiece loading.

[0056] S2. Rough placement of workpiece: The semi-solid aluminum alloy die casting to be processed is roughly placed on the top of the multiple self-locking support mechanisms 3 of the clamping table 4. Precise alignment is not required. The workpiece's own weight squeezes each inner rod 31. The inner rods 31 at different positions extend and retract independently according to the concavity and convexity and curved shape of the bottom surface of the workpiece, adaptively fitting all support points on the bottom surface of the workpiece and eliminating the gap of the suspended space.

[0057] S3. Precise workpiece alignment and fine-tuning: Start the rotary drive assembly 6 and the adjustment drive assembly 7. Drive the worm gear transmission through the rotary servo motor 63 to rotate the rotary table 2 and fine-tune the circumferential angle of the workpiece. Drive the lead screw 72 to rotate through the adjustment servo motor 71, which drives the clamping table 4 to slide horizontally and precisely adjust the position of the workpiece so that the tail of the workpiece extends completely above the cutting hole 8, thus completing the cutting alignment.

[0058] S4. Rigid self-locking of the support mechanism: After alignment, the power supply of the bar electromagnet 33 is turned on. The electromagnet generates a suction force to attract the iron block 312, which drives the guide bar 313 to move outward against the tension of the tension spring 317. The ramp 316 of the guide bar 313 cooperates with the cone 315 of the top column 310, pushing the top column 310 to rise vertically along the movable groove 311. The cone-shaped top of the top column 310 presses against all the circumferential extrusion blocks 39, causing the extrusion blocks 39 to slide radially outward against the elastic force of the second compression spring 321, and tightly press against the pressure pad 35. The high friction between the extrusion block 39 and the pressure pad 35 locks the relative position of the inner rod 31 and the outer cylinder 37. All self-locking support mechanisms 3 complete self-locking simultaneously, forming a rigid support for the workpiece throughout the entire area.

[0059] S5. Flexible clamping and fixing: Activate the telescopic rod 51 of the upper clamping mechanism 5. The telescopic rod 51 drives the pressure plate 53 and the bottom flexible clamp 54 to descend vertically, so that the flexible clamp 54 fits against the upper surface of the die-cast part. Under pressure, the flexible clamp 54 and the internal non-Newtonian fluid adaptively deform, filling the depression on the upper surface of the workpiece and fitting the curved surface contour, applying uniform pressure to the entire area of ​​the workpiece, completing flexible and non-damaging clamping and fixing, and restricting the displacement of the workpiece in all directions.

[0060] S6. Tail material cutting operation: Start the cutting equipment and feed the cutting tool from above or below the cutting hole 8 to accurately cut the die casting tail material extending above the cutting hole 8. During the cutting process, the composite structure of rigid support and flexible clamping can effectively resist cutting vibration and ensure cutting accuracy.

[0061] S7. Unlocking and Resetting: After cutting, the telescopic rod 51 retracts, causing the flexible clamp 54 to rise and release the workpiece. The power supply to the bar electromagnet 33 is cut off, the magnetic attraction disappears, the guide bar 313 resets under the action of the tension spring 317, the top column 310 falls back, and the pressing block 39 retracts and disengages from the pressure pad 35 under the action of the second compression spring 321. The inner rod 31 is unlocked, and the inner rod 31 rebounds and resets under the action of the first compression spring 34, restoring the adaptive telescopic state. The processed workpiece is then removed, and the processing cycle for the next workpiece can begin.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A semi-solid aluminum alloy die-casting tail material cutting fixture, comprising a clamping platform, characterized in that, A clamping platform is installed on the clamping platform, and multiple self-locking support mechanisms are evenly distributed on the clamping platform. The self-locking support mechanisms are used to adaptively fit and support the irregular bottom surface of the die casting, and self-lock and fix it after the die casting is placed in place, forming a rigid support structure. An upper clamping mechanism is fixedly installed on the clamping platform. The output end of the upper clamping mechanism is located directly above the clamping platform. The output end of the upper clamping mechanism is a deformable flexible surface, which is used to adaptively fit the upper surface of the die-casting part to achieve flexible clamping and fixing. The clamping platform has a through-hole in the middle, and the die-casting tail material can extend above the cutting hole so that the cutting tool can complete the tail material cutting operation from above or below the cutting hole.

2. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 1, characterized in that, The self-locking support mechanism includes an outer cylinder embedded inside the clamping table, the top of the outer cylinder being flush with the surface of the clamping table, an inner rod being vertically slidably installed inside the outer cylinder, and a first compression spring connecting the bottom of the inner rod to the inner bottom of the outer cylinder. A self-locking mechanism is provided between the outer cylinder and the inner rod. The self-locking mechanism is used to lock the relative position of the inner rod and the outer cylinder to achieve rigid fixed support of the inner rod.

3. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 2, characterized in that, The self-locking mechanism includes several pressure pads, several extrusion blocks, and a top-pressing component. The pressure pads are embedded in the strip-shaped grooves on the inner wall of the outer cylinder. Several mounting grooves are evenly opened on the side wall of the inner rod. An extrusion block is slidably assembled in each mounting groove. A second compression spring is connected between the extrusion block and the inner side wall of the mounting groove. The extrusion block has an arc-shaped structure and its outer diameter matches the inner diameter of the pressure pad. The contact surfaces of the extrusion block and the pressure pad are provided with a high-friction coefficient anti-slip layer. The top-pressing assembly is installed inside the inner rod and outer cylinder, and is used to drive all the extrusion blocks to press the pressure pad radially outward, thereby achieving self-locking fixation of the inner rod through friction.

4. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 3, characterized in that, The top-pressing assembly includes a top column, a guide bar, a tension spring, an iron block, and a bar electromagnet. The inner rod has a vertical movable groove inside, and the top column is vertically slidably installed in the movable groove. The top column has a conical top-pressing end at its top. The inner rod has an installation groove on its side wall that is vertically connected to the movable groove. The guide bar is horizontally slidably installed in the installation groove. One end of the guide bar is connected to the inner wall of the installation groove through a tension spring, and the other end is fixedly installed with an iron block. The bottom end of the top column has a through hole, and the top of the through hole has a convex cone. The guide bar has a ramp that matches the convex cone. The outer cylinder is fixedly mounted on the outer side, the bar electromagnet is fixed inside the mounting shell, and the outer cylinder side wall is provided with a slot for the iron block to pass through.

5. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 1, characterized in that, The upper clamping mechanism includes a fixed frame, a telescopic rod, a pressure plate, and a flexible clamping bag. The fixed frame is fixedly installed on the clamping platform. The telescopic rod is vertically fixed to the top of the fixed frame. The telescopic end of the telescopic rod faces downward and is fixedly connected to the pressure plate. The flexible clamping bag is fixedly assembled at the bottom of the pressure plate. The flexible clamping bag is a non-elastic waterproof fabric cavity structure, and the interior of the flexible clamping bag is filled with a non-Newtonian fluid.

6. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 1, characterized in that, A rotary table is also rotatably mounted on the clamping platform, and the clamping platform is slidably mounted on the rotary table. An adjustment drive assembly is installed on the rotary table. The output end of the adjustment drive assembly is connected to the clamping table and is used to drive the clamping table to make horizontal sliding adjustments to its position. A rotary drive assembly is installed on the clamping platform. The output end of the rotary drive assembly is connected to the rotary table and is used to drive the rotary table to rotate and finely adjust the angle.

7. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 6, characterized in that, The rotary drive assembly includes a rotary servo motor, a worm gear, and a worm wheel. The rotary servo motor is fixedly installed at the bottom of the clamping platform, the worm wheel is fixedly sleeved on the bottom end of the rotary table, the worm gear is fixedly connected to the output shaft of the rotary servo motor, and the worm gear and the worm wheel are meshed and connected for transmission.

8. The semi-solid aluminum alloy die-casting tail material cutting fixture according to claim 6, characterized in that, The adjustment drive assembly includes an adjustment servo motor and a lead screw. The adjustment servo motor is fixedly installed on the top surface of the rotary table, and the lead screw is rotatably installed inside the rotary table. One end of the lead screw is fixedly connected to the output shaft of the adjustment servo motor, and the lead screw is threadedly connected to the bottom of the clamping table.

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