A clamping device for processing of an automobile die casting

Abstract

The utility model provides a kind of clamping equipment for automobile die casting machining, it includes: rotating platform and the rotating drive module of driving the rotation of rotating platform, two groups of clamping devices are symmetrically provided on the rotating platform, respectively for clamping to be processed die casting and processed die casting, the rotating platform can rotate around center axis, realize the sequential switching of feeding station, main clamping station and processing station;The clamping device includes mounting plate and the several guide mechanisms, pre-clamping mechanism and main clamping mechanism of being arranged on the mounting plate, the guide mechanism is used to limit the X direction, Y direction clamping position of die casting, the pre-clamping mechanism is used to in feeding station the Z direction clamping of die casting, the main clamping mechanism is used to in main clamping station the X direction, Y direction and Z direction clamping of die casting. By the above-mentioned mode, by the above-mentioned mode, realize the step-by-step clamping action of die casting, effectively improve clamping precision, avoid die casting damage.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a clamping device for machining automotive die-casting parts. Background Technology

[0002] In the die-casting process, the accuracy and efficiency of the clamping equipment directly affect the quality of the die-cast parts and production efficiency. Traditional clamping equipment typically uses a single clamping mechanism, which has the following problems:

[0003] (1) During the clamping process, the die-casting parts are easily damaged due to excessive clamping force or inaccurate positioning;

[0004] (2) The feeding, unloading and processing processes cannot be carried out simultaneously, resulting in low production efficiency;

[0005] (3) The clamping equipment is prone to displacement of the die casting due to vibration or gravity during the processing, which affects the processing accuracy.

[0006] Therefore, there is an urgent need to provide a new type of clamping device that can accurately clamp die-cast parts and prevent damage to the die-cast parts during the clamping process. Utility Model Content

[0007] To address the aforementioned issues, this utility model proposes a clamping device for processing automotive die-cast parts. Through the coordinated action of the pre-clamping mechanism and the main clamping mechanism, clamping accuracy is ensured, damage to the die-cast parts is avoided, and the loading, unloading, and processing processes are synchronized, thereby improving production efficiency.

[0008] The main contents of this utility model include: a rotating platform and a rotating drive module for driving the rotating platform to rotate. Two sets of clamping devices are symmetrically arranged on the rotating platform, which are used to clamp the die casting to be processed and the die casting that has been processed, respectively. The rotating platform can rotate around the central axis to realize the sequential switching of the loading station, the main clamping station and the processing station.

[0009] The clamping device includes a mounting plate and several guide mechanisms, pre-clamping mechanisms, and main clamping mechanisms disposed on the mounting plate. The guide mechanisms are used to define the X-axis and Y-axis clamping positions of the die casting. The pre-clamping mechanisms are used to clamp the die casting in the Z-axis at the loading station. The main clamping mechanisms are used to clamp the die casting in the X-axis, Y-axis, and Z-axis at the main clamping station. The X-axis and Y-axis are parallel to the mounting plate, and the Z-axis is perpendicular to the mounting plate.

[0010] Preferably, the guiding mechanism includes a support disposed on the mounting plate, a guide post disposed at the Z-direction end of the support away from the mounting plate, a guide cone disposed at the Z-direction end of the guide post away from the support, the end of the guide cone connected to the guide post being a first end, the end of the guide cone away from the guide post being a second end, and the diameter of the second end being smaller than the diameter of the first end, and the diameter of the first end being smaller than the inner diameter of the positioning hole of the die-casting part.

[0011] Preferably, the pre-clamping mechanism includes a pre-support portion and a pre-clamping portion disposed on one side of the pre-support portion. The pre-support portion includes a double-stroke floating support cylinder, the piston rod of which is disposed along the Z-direction for supporting one side of the die-casting part. The pre-clamping portion includes a first rotary clamping cylinder and a pre-pressure rod. One end of the pre-pressure rod is connected to the piston rod of the first rotary clamping cylinder, and the other end of the pre-pressure rod is pressed against the other side of the die-casting part under the drive of the first rotary clamping cylinder.

[0012] Preferably, the main clamping mechanism includes a main support portion and a main clamping portion disposed on one side of the main support portion. The main support portion includes a support platform for providing a Z-axis reference plane for clamping the die casting. A radial locking member is disposed on the support platform for locking the X-axis and Y-axis positions of the die casting. The main clamping portion includes a second rotary clamping cylinder and a main pressure rod. One end of the main pressure rod is connected to the piston rod of the second rotary clamping cylinder, and the other end of the main pressure rod is pressed against the side of the die casting away from the support platform under the drive of the second rotary clamping cylinder.

[0013] Preferably, the radial locking member includes a hollow column protruding along the Z-direction at the center of the support platform. The sidewall of the hollow column is provided with a plurality of radial through holes spaced apart circumferentially. A tensioning block is slidably disposed in the radial through holes. An axial driving rod is coaxially disposed inside the hollow column. The outer surface of the axial driving rod is provided with a wedge-shaped guide portion corresponding to the tensioning block. The lower end of the axial driving rod is connected to a displacement driving member. The wedge-shaped guide portion and the inner end face of the tensioning block form a sliding fit. When the displacement driving member drives the axial driving rod to move axially, the inclined surface of the wedge-shaped guide portion forces the tensioning block to extend radially outward.

[0014] Preferably, the wedge-shaped guide portion is configured as a continuously gradually changing spiral slope.

[0015] Preferably, the inner end face of the tensioning block is provided with a groove that matches the wedge-shaped guide portion, and a ball is embedded in the groove.

[0016] Preferably, the mounting plate is further provided with a wheel cover clamping mechanism for clamping the wheel cover of the die-cast part. The wheel cover clamping mechanism includes a fixed frame mounted on the mounting plate, and a wheel cover clamping component is disposed on the fixed frame.

[0017] Preferably, the wheel cover clamping member includes a wheel cover support portion for supporting one side of the wheel cover and a wheel cover clamping portion for pressing down on the other side of the wheel cover. The wheel cover support portion includes a floating support cylinder, and the piston rod end of the floating support cylinder is used to support the wheel cover. The wheel cover clamping portion includes a linear displacement cylinder and an L-shaped pressing rod, and the linear displacement cylinder drives the L-shaped pressing rod to press against the other side of the wheel cover.

[0018] Preferably, the rotary drive module includes a four-axis turntable and a four-axis tailstock, with one end of the rotary platform connected to the four-axis turntable and the other end connected to the four-axis tailstock.

[0019] The beneficial effects of this utility model are as follows: the dual clamping mechanism of pre-clamping and main clamping avoids damage to die castings caused by excessive clamping force or inaccurate positioning; the rotating platform and multi-station design enable the simultaneous loading, unloading and processing of materials, significantly improving production efficiency; the synergistic effect of the guiding mechanism, pre-clamping mechanism and main clamping mechanism ensures the accuracy of die castings during rotation and processing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment;

[0021] Figure 2 This is a three-dimensional structural diagram of the clamping device in a preferred embodiment;

[0022] Figure 3 This is a three-dimensional structural diagram of the guide mechanism in a preferred embodiment;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the pre-clamping mechanism in a preferred embodiment;

[0024] Figure 5 This is a three-dimensional structural diagram of the main clamping mechanism in a preferred embodiment;

[0025] Figure 6 This is a three-dimensional structural schematic diagram of the wheel cover clamping mechanism in a preferred embodiment;

[0026] Figure 7 This is a three-dimensional structural diagram of the auxiliary clamping mechanism in a preferred embodiment;

[0027] Figure label:

[0028] 1. Rotating platform;

[0029] 2. Rotary drive module; 21. Four-axis turntable; 22. Four-axis tailstock;

[0030] 3. Clamping device; 31. Mounting plate;

[0031] 32. Guiding mechanism; 321. Support; 322. Guide column; 323. Guide cone; 324. First end; 325. Second end;

[0032] 33. Pre-clamping mechanism; 331. Double-stroke floating support cylinder; 332. First rotary clamping cylinder; 333. Preload rod;

[0033] 34. Main clamping mechanism; 341. Support platform; 342. Radial locking component; 3421. Hollow column; 3422. Tensioning block; 343. Second rotary clamping cylinder; 344. Main pressure rod;

[0034] 35. Wheel cover clamping mechanism; 351. Fixed frame; 352. Wheel cover clamping component; 3521. Floating support cylinder; 3522. Linear displacement cylinder; 3523. L-shaped downward pressure rod; 3524. First connecting rod; 3525. Downward pressure head;

[0035] 36. Auxiliary clamping mechanism; 361. Auxiliary support platform; 362. Third rotary clamping cylinder; 363. Auxiliary pressure rod. Detailed Implementation

[0036] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, this application proposes a clamping device for processing automotive die-cast parts, which includes a rotating platform 1 and a rotary drive module 2 for driving the rotating platform 1 to rotate. Two sets of clamping devices 3 are symmetrically arranged on the rotating platform 1, respectively used for clamping the die-cast parts to be processed and the processed die-cast parts. The rotary drive module 2 drives the rotating platform 1 to rotate around the central axis, which can realize the switching of work positions. Specifically, when the rotating platform 1 is in a vertical state, one set of clamping devices 3 is located at the loading station, which can load the die-cast parts to be processed, and the other set of clamping devices 3 is located at the processing station, which can perform milling processing on the die-cast parts. The loading and processing actions of the die-cast parts can be performed simultaneously, which effectively improves the processing efficiency. When the rotating platform 1 rotates to a horizontal state, the clamping devices 3 rotate from the loading station to the upper main clamping station. After the die-cast parts fall under the action of gravity, the clamping devices 3 clamp the die-cast parts again for subsequent processing.

[0038] like Figure 1As shown, in a specific embodiment, the rotary drive module 2 includes a four-axis turntable 21 and a four-axis tailstock 22. One end of the rotary platform 1 is connected to the four-axis turntable 21, and the other end is connected to the four-axis tailstock 22. The four-axis turntable 21 and the four-axis tailstock 22 are a type of clamping rotary axis mechanism specifically designed for use with large clamps. Its structure can generally be a clamp with a clamping rotary platform 1 and a drive mechanism that drives the clamp to rotate. Its structure is conventional technology and will not be described in detail here. The four-axis turntable can accurately rotate 360° at any angle.

[0039] like Figure 2 As shown, the clamping device 3 includes a mounting plate 31 and a guide mechanism 32, a pre-clamping mechanism 33, and a main clamping mechanism 34 disposed on the mounting plate 31. When the clamping device 3 is in the loading position, the guide mechanism 32 is inserted into the positioning hole of the die casting along the Z direction to initially define the clamping position of the die casting in the X and Y directions. The pre-clamping mechanism 33 is used to define the clamping position of the die casting in the Z direction. When the clamping device 3 rotates to the main clamping position, the main clamping mechanism 34 is used to lock the position of the die casting in the X, Y, and Z directions. The X and Y directions are parallel to the mounting plate 31, and the Z direction is perpendicular to the mounting plate 31.

[0040] like Figure 2-3 As shown, the guide mechanism 32 includes a support 321 mounted on a mounting plate 31. A guide post 322 is connected to the Z-direction end of the support 321 away from the mounting plate 31. A guide cone 323 is provided at the Z-direction end of the guide post 322 away from the support 321. The end of the guide cone 323 that connects to the guide post 322 is the first end 324, and the end of the guide cone 323 away from the guide post 322 is the second end 325. The diameter of the second end 325 is smaller than the diameter of the first end 324. Further, the diameter of the first end of the guide cone 323 is equal to the diameter of the guide post 322, and the diameter of the guide post 322 is slightly smaller than the inner diameter of the positioning hole of the die-casting part. The difference between the diameter of the guide post and the inner diameter of the positioning hole is between 0.5mm and 1mm, creating a gap between the guide mechanism 32 and the positioning hole. This prevents the inner wall of the positioning hole of the die-casting part from making hard contact with the guide mechanism 32 when the die-casting part moves along the guide mechanism 32 in the Z-direction, thus preventing damage to the die-casting part. The guiding mechanism 32 guides the die casting to roughly define the X and Y positions of the die casting during the pre-clamping stage, thereby improving clamping accuracy. During the main clamping station, the die casting falls under the action of gravity, and the guiding mechanism guides the falling of the die casting to prevent the die casting from shifting position during the falling process.

[0041] Preferably, in a specific embodiment, the support 321, the guide column 322, and the guide cone 323 are integrally formed, which effectively improves the structural strength.

[0042] like Figure 2-4As shown, the pre-clamping mechanism 33 includes a pre-support part and a pre-clamping part disposed on the mounting plate 31. The pre-support part is used to support one side of the die casting, and the pre-clamping part is used to press down on the other side of the die casting to achieve a Z-axis clamping action on the die casting.

[0043] Specifically, the aforementioned pre-support part is a double-stroke floating support cylinder 331, whose piston rod is arranged along the Z direction to support one side of the die casting. The piston rod of the aforementioned double-stroke floating support cylinder 331 can adjust the height of the piston rod according to the Z-direction movement of the die casting. It has a first stop position and a second stop position in the movement path, which correspond to the piston rod positions at the loading station and the main clamping station, respectively. The pre-pressing part includes a first rotary clamping cylinder 332 and a pre-pressing rod 333. The piston rod end of the first rotary clamping cylinder 332 is connected to one end of the pre-pressing rod 333. The other end of the pre-pressing rod 333 is rotated to the top of the die casting under the drive of the first rotary clamping cylinder 332 and pressed against the other side of the die casting.

[0044] In a specific embodiment, when the clamping device is located at the loading station, the piston rod of the double-stroke floating support cylinder 331 is located at the first stop position; when the clamping device 3 is located at the main clamping station and the processing station, the piston rod of the double-stroke floating support cylinder 331 is located at the second stop position; the height of the first stop position along the Z direction is greater than the height of the second stop position along the Z direction. At the loading station, the piston rod of the double-stroke floating support cylinder 331 supports one side of the die casting at the first stop position, and the pre-pressing rod 333 presses on the other side of the die casting to achieve pre-clamping of the die casting; after the rotary drive module 2 drives the rotary platform 1 to rotate to the main clamping station, the double-stroke floating support cylinder 331 drives the piston rod to retract to the second stop position, and the die casting falls under the action of gravity. The pre-pressing rod 333 descends again and presses on the other side of the die casting to achieve auxiliary clamping of the die casting.

[0045] like Figure 2 The device has four pre-clamping mechanisms, mainly arranged near the center of the die-cast part in positions suitable for clamping. The specific selection of clamping positions is a conventional technique and will not be described here.

[0046] like Figure 2-5 As shown, the main clamping mechanism 34 includes a main support part and a main clamping part disposed on the mounting plate 31. When the clamping device is located in the main clamping position, the main support part is used to support one side of the die casting and restrict the X and Y displacement of the die casting. The main clamping part is used to press down on the other side of the die casting to achieve the Z-axis clamping action of the die casting.

[0047] like Figure 2-3As shown, the main support includes a support platform 341, which provides a Z-axis reference plane for clamping the die-casting and defines the Z-axis position of the die-casting. A radial locking member 342 is provided on the support platform 341 to lock the X and Y-axis positions of the die-casting. The main clamping part includes a second rotary clamping cylinder 343 and a main pressure rod 344. The piston rod end of the second rotary clamping cylinder 343 is connected to one end of the main pressure rod 344. The other end of the main pressure rod 344 rotates under the drive of the second rotary clamping cylinder 343 to above the die-casting and presses against the other side of the die-casting to lock the Z-axis position of the die-casting.

[0048] like Figure 2 and 3 As shown, specifically, the radial locking member 342 includes a hollow column 3421 protruding along the Z-direction at the center of the support platform. The sidewall of the hollow column 3421 has multiple radially spaced through holes distributed circumferentially. Tensioning blocks 3422 are slidably disposed within the radial through holes. An axial drive rod (not shown) coaxially passes through the hollow column 3421. The outer surface of the axial drive rod has a wedge-shaped guide portion corresponding to the tensioning block 3422. A displacement drive member is provided at the bottom of the support platform, drivingly connected to the lower end of the axial drive rod. The wedge-shaped guide portion and the inner end face of the tensioning block 3422 form a sliding fit. When the displacement drive member drives the axial drive rod to move axially, the inclined surface of the wedge-shaped guide portion forces the tensioning block 3422 to extend radially outward. Further, in a specific embodiment, the wedge-shaped guide portion is configured as a continuously gradually changing spiral inclined surface; the inner end face of the tensioning block 3422 has a groove adapted to the wedge-shaped guide portion, and a ball bearing is embedded in the groove. In this embodiment, the displacement drive is any one of a hydraulic cylinder, an electric push rod, or a pneumatic actuator, without any specific limitation.

[0049] When the clamping device 3 rotates to the main clamping position, the die-cast part falls under gravity, with one side of the die-cast part abutting against the support table. The hollow column 3421 is inserted into the clamping hole of the die-cast part along the Z direction. When the displacement drive pushes the axial drive rod upward, the inclined surface of the wedge-shaped guide part contacts the ball bearings in the groove of the tension block 3422, forcing each tension block 3422 to extend outward synchronously. The tension block 3422 abuts against the inner wall of the clamping hole, achieving radial locking and limiting the displacement of the die-cast part in the X and Y directions. During the reverse movement, the tension block 3422 retracts under the action of the return spring (not shown). Through the cooperation of the axial drive rod and the wedge-shaped guide part, the axial movement of the displacement drive is directly converted into the synchronous expansion of the tension block 3422. The outer side of the tension block 3422 abuts against the locking hole of the die-cast part to achieve fast and precise locking.

[0050] For example Figure 2The device has four main clamping mechanisms, primarily located near the four corners of the die-cast part in suitable clamping positions. The specific selection of clamping positions is a standard technique and will not be discussed here.

[0051] like Figure 2 and 6 As shown, wheel cover clamping mechanisms 35 are also provided on opposite sides of the mounting plate 31 to fix and clamp the wheel cover of the press-fit component, preventing the wheel cover from vibrating during processing and thus affecting the processing accuracy. The wheel cover clamping mechanism 35 includes a fixing frame 351 mounted on the mounting plate 31, and a wheel cover clamping member 352 is disposed on the fixing frame 351. The wheel cover clamping member 352 includes a wheel cover support part and a wheel cover clamping part. The wheel cover support part is used to support one side of the wheel cover, and the wheel cover clamping part is used to press down and clamp the other side of the wheel cover.

[0052] like Figure 2 and 6 As shown, specifically, the wheel cover support includes a floating support cylinder 3521, the piston rod end of which supports the wheel cover. The wheel cover clamping part includes a linear displacement cylinder 3522 and an L-shaped pressing rod 3523. The L-shaped pressing rod 3523 includes a hinged end and a pressing end. The hinged end, on the side away from the wheel cover support, is hinged to the piston rod of the linear displacement cylinder 3522. The hinged end, on the side near the wheel cover support, is hinged to a first connecting rod 3524. The other end of the first connecting rod 3524 is hinged to the cylinder body of the linear displacement cylinder 3522. The pressing end is equipped with a pressing head 3525 for pressing onto the wheel cover. Preferably, the contact end face of the pressing head 3525 is configured with an arc-shaped structure to prevent the pressing head 3525 from making hard contact with the wheel cover when pressed onto it, thus preventing wear on the wheel cover.

[0053] For example Figure 2 The device has two sets of wheel cover clamping mechanisms, mainly arranged on both sides of the die-cast part in suitable clamping positions. Each wheel cover clamping mechanism is equipped with two sets of staggered wheel cover clamping parts for multi-position clamping of the wheel cover. The specific selection of clamping positions is a conventional technique and will not be described here.

[0054] like Figure 2 and 7As shown, in a representative embodiment, a plurality of auxiliary clamping mechanisms 36 are also arranged on the mounting plate 31. When the clamping device is located at the main clamping position, after the main clamping mechanism 34 clamps the die casting, the auxiliary clamping mechanisms 36 clamp the die casting at multiple points to improve the clamping force of the die casting. Specifically, the auxiliary clamping mechanism 36 includes an auxiliary support platform 361 disposed on the mounting plate 31, which is used to support one side of the die casting; a third rotary clamping cylinder 362 and an auxiliary pressure rod 363 are disposed on one side of the auxiliary support platform 361. The piston rod end of the third rotary clamping cylinder 362 is connected to one end of the auxiliary pressure rod 363, and the other end of the auxiliary pressure rod 363 is rotated to above the die casting and pressed against the other side of the die casting under the drive of the third rotary clamping cylinder 362.

[0055] It should be noted that the arrangement of the above-mentioned guiding mechanism 32, pre-clamping mechanism 33, main clamping mechanism 34, wheel cover clamping mechanism 35 and auxiliary clamping mechanism 36 is arranged according to the different structures of the die-casting parts. This is a conventional technical method in this field and will not be described in detail here.

[0056] The specific process is as follows: the unloading robot grabs the completed die casting; the loading robot loads the die casting, and the double-stroke floating support cylinder 331 of the pre-clamping mechanism 33 pre-clamps the die casting at the first stop position; the above two actions need to be completed during the processing of the inner die casting; after the inner die casting is processed, the rotating platform 1 rotates 90 degrees, at which point the loaded die casting is in the main clamping position, the double-stroke floating support cylinder 331 of the pre-clamping mechanism 33 descends to the second stop position, the bottom surface of the die casting contacts the end face of the support table 341, the radial locking component 342 of the main clamping mechanism 34 tightens and locks, locking the die casting in the X and Y directions, the main clamping part clamps, the pre-clamping part clamps, locking the die casting in the Z direction; after the secondary clamping is completed, the rotating platform 1 continues to rotate 90 degrees, and the die casting reaches the processing position.

[0057] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamping device for processing automotive die-casting parts, characterized in that, Mainly includes: A rotating platform (1) and a rotating drive module (2) for driving the rotating platform (1) to rotate. Two sets of clamping devices (3) are symmetrically arranged on the rotating platform (1) for clamping the die casting to be processed and the die casting that has been processed, respectively. The rotating platform (1) can rotate around the central axis to realize the sequential switching of the loading station, the main clamping station and the processing station. The clamping device (3) includes a mounting plate (31) and several guide mechanisms (32), pre-clamping mechanisms (33) and main clamping mechanisms (34) disposed on the mounting plate (31). The guide mechanisms (32) are used to define the X and Y clamping positions of the die casting. The pre-clamping mechanisms (33) are used to clamp the die casting in the Z direction at the loading station. The main clamping mechanisms (34) are used to clamp the die casting in the X, Y and Z directions at the main clamping station. The X and Y directions are parallel to the mounting plate (31), and the Z direction is perpendicular to the mounting plate (31).

2. The clamping device for processing automotive die-casting parts according to claim 1, characterized in that, The guiding mechanism (32) includes a support (321) disposed on the mounting plate (31). A guide post (322) is disposed at the Z-direction end of the support (321) away from the mounting plate (31). A guide cone (323) is disposed at the Z-direction end of the guide post (322) away from the support (321). The end of the guide cone (323) connected to the guide post (322) is the first end (324). The end of the guide cone (323) away from the guide post (322) is the second end (325). The diameter of the second end (325) is smaller than the diameter of the first end (324). The diameter of the first end (324) is smaller than the inner diameter of the positioning hole of the die-casting part.

3. The clamping device for processing automotive die-casting parts according to claim 1, characterized in that, The pre-clamping mechanism (33) includes a pre-support part and a pre-clamping part disposed on one side of the pre-support part. The pre-support part includes a double-stroke floating support cylinder (331). The piston rod of the double-stroke floating support cylinder (331) is disposed along the Z direction and is used to support one side of the die casting. The pre-clamping part includes a first rotary clamping cylinder (332) and a pre-pressing rod (333). One end of the pre-pressing rod (333) is connected to the piston rod of the first rotary clamping cylinder (332), and the other end of the pre-pressing rod (333) is pressed onto the other side of the die casting under the drive of the first rotary clamping cylinder (332).

4. The clamping device for processing automotive die-casting parts according to claim 1, characterized in that, The main clamping mechanism (34) includes a main support part and a main clamping part disposed on one side of the main support part. The main support part includes a support platform (341) for providing a Z-axis reference plane for clamping the die casting. A radial locking member (342) is disposed on the support platform (341) for locking the X-axis and Y-axis positions of the die casting. The main clamping part includes a second rotary clamping cylinder (343) and a main pressure rod (344). One end of the main pressure rod (344) is connected to the piston rod of the second rotary clamping cylinder (343). The other end of the main pressure rod (344) is pressed against the side of the die casting away from the support platform (341) under the drive of the second rotary clamping cylinder (343).

5. The clamping device for processing automotive die-casting parts according to claim 4, characterized in that, The radial locking member (342) includes a hollow column (3421) protruding along the Z direction at the center of the support platform (341). The side wall of the hollow column (3421) is provided with a plurality of radial through holes spaced apart along the circumference. A tensioning block (3422) is slidably disposed in the radial through holes. An axial driving rod is coaxially disposed in the hollow column (3421). The outer surface of the axial driving rod is provided with a wedge-shaped guide portion corresponding to the tensioning block (3422). The lower end of the axial driving rod is connected to a displacement driving member. The wedge-shaped guide portion and the inner end face of the tensioning block (3422) form a sliding fit. When the displacement driving member drives the axial driving rod to move axially, the inclined surface of the wedge-shaped guide portion forces the tensioning block to extend outward radially.

6. The clamping device for processing automotive die-casting parts according to claim 5, characterized in that, The wedge-shaped guide is configured as a continuously gradually changing spiral slope.

7. The clamping device for processing automotive die-casting parts according to claim 5, characterized in that, The inner end face of the tensioning block (3422) is provided with a groove that is adapted to the wedge-shaped guide portion, and a ball is embedded in the groove.

8. The clamping device for processing automotive die-casting parts according to claim 1, characterized in that, The mounting plate (31) is also equipped with a wheel cover clamping mechanism (35) for clamping the wheel cover of the die casting. The wheel cover clamping mechanism (35) includes a fixing frame (351) mounted on the mounting plate (31), and a wheel cover clamping member (352) is mounted on the fixing frame (351).

9. The clamping device for processing automotive die-casting parts according to claim 8, characterized in that, The wheel cover clamping member (352) includes a wheel cover support part for supporting one side of the wheel cover and a wheel cover clamping part for pressing down the other side of the wheel cover. The wheel cover support part includes a floating support cylinder (3521), the piston rod end of which is used to support the wheel cover. The wheel cover clamping part includes a linear displacement cylinder (3522) and an L-shaped pressing rod (3523). The linear displacement cylinder (3522) drives the L-shaped pressing rod (3523) to press against the other side of the wheel cover.

10. The clamping device for processing automotive die-casting parts according to claim 1, characterized in that, The rotary drive module (2) includes a four-axis turntable (21) and a four-axis tailstock (22). One end of the rotary platform (1) is connected to the four-axis turntable (21), and the other end is connected to the four-axis tailstock (22).

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