Workpiece clamping mechanism for cradle type workbench

Abstract

The workpiece clamping mechanism comprises a bottom plate, an axle box A, a rotary arm and an axle box B. One side of the top of the bottom plate is fixedly connected with the axle box A, the rotary arm is movably installed on the side face of the axle box A, the other side of the rotary arm is movably connected with the axle box B. The bottom of the axle box B is fixedly connected with the top of the other side of the bottom plate. A rotary disc is movably installed in the rotary arm, four guide grooves are formed in the circumferential outer wall of the rotary disc, side holes are formed in the two ends of each guide groove, and the circumferential outer wall of the rotary disc is sleeved with a fixing piece. And the part can be ejected out through gas stored inside, so that a limiting force is formed, the part is fixed to the position where work is needed, the rectangular plate is secondarily fixed, the movable head can form a relative force to fix the special-shaped part, and then the overall use efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece clamps, and in particular to a workpiece clamping mechanism for a cradle-type workbench and an operating method. Background Art

[0002] The cradle-type worktable is also called a double rotary worktable. As a high-end CNC machining equipment, the demand for machining centers is also increasing. The rotary worktable is the basic component of the five-axis CNC machine tool. Theoretically, the CNC rotary worktable is the basis of the five-axis linkage. It can realize the two-coordinate positioning of the rotary axis and the swing axis. It uses an advanced electric spindle as the core component of the spindle system, which makes the mechanical structure simpler and the control part simplified accordingly. In theory, it provides a basis for the transformation of CNC machine tools and improves the machining accuracy and efficiency.

[0003] The double rotary worktable currently uses a turntable to support the workpiece, and the workpiece is fixed to the turntable by bolts, so that the surface of the workpiece can be processed and polished during the rotation of the turntable.

[0004] The existing turntable can be fixed with bolts when processing large parts, but when processing small parts or small special-shaped workpieces, the existing fixture needs to be fixed to the turntable with bolts, and then the small part can be fixed with the fixed fixture for processing. This method will take a lot of time to install, and it is easy to cause wear during installation and disassembly, which is not suitable for long-term processing. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a workpiece clamping mechanism and an operating method for a cradle-type worktable, which solves the problem that the existing turntable can be fixed with bolts when processing large parts, which is not suitable for long-term processing.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a workpiece clamping mechanism for a cradle-type workbench, including a base plate, an axle box A, a swivel arm, and an axle box B. One side of the top of the base plate is fixedly connected to the axle box A, and the swivel arm is movably installed on the side of the axle box A. The other side of the swivel arm is movably connected to the axle box B. The bottom of the axle box B is fixedly connected to the top of the other side of the base plate. A turntable is movably installed inside the swivel arm. Four guide grooves are opened on the circumferential outer wall of the turntable. Side holes are opened inside the two ends of the guide grooves. The circumferential outer wall of the turntable is sleeved with a fixing piece; the fixing piece includes a sleeve, a connecting rod, a side rod, a clamp head, an air distribution pipe, a telescopic rod, a spring, a rectangular plate, and a limit ring. Plate, round plug, diversion port, and bayonet pin. A notch is provided on the circumferential extension of the sleeve disk, and a rotating shaft is movably installed inside the notch. The outer wall of the rotating shaft is fixedly sleeved with a connecting rod, and the outer wall of the connecting rod is fixedly installed with a side rod, and the outer wall of the side rod is fixedly installed with a clamp head. The outer wall of the side rod is fitted and connected to the air distribution pipe, and the internal thread of the air distribution pipe is connected to the telescopic rod, and the outer wall of the telescopic rod is movably sleeved with a spring. The outer wall of the telescopic rod and the internal movability of the turntable are movably sleeved, and the other side of the telescopic rod is fixedly connected to a rectangular plate, and both ends of the inner part of the rectangular plate are fixedly connected to a limiting ring plate, and the inner part of the limiting ring plate is movably sleeved with a bayonet pin, and the other side of the bayonet is fixedly connected to a round plug, and a diversion port is provided inside the air distribution pipe.

[0007] Preferably, a movable opening is provided at the bottom of the groove, and the movable opening is located on the circumferential outer wall of the turntable. The inside of the movable opening is fixedly connected to a circular plate, and a circular opening is opened inside the circular plate. The back side of the movable opening and the outer wall of the spring fit together, the inside of the circular opening and the outer wall of the telescopic rod are movably connected, and the surface of the telescopic rod and the outer wall of the air distribution pipe fit together.

[0008] Preferably, the circumferential outer wall of the sleeve is fixedly connected to the pneumatic mechanism; the pneumatic mechanism includes an air cylinder, a screw, a handle, an air pipe A, and an air pipe B. The outer wall of the air cylinder and the circumferential outer wall of the sleeve are fixedly connected, the screw is installed on the internal thread of the air cylinder, and the handle is detachably installed on the inside of the screw. The top of the air cylinder is fixedly connected to the air pipe B, and the side of the air cylinder is fixedly connected to the air pipe A. The multiple gas pipes are interconnected with the side of the air cylinder through the air pipe A, and the multiple clamp heads are interconnected with the top of the air cylinder through the air pipe B.

[0009] Preferably, the interior of the clamp head includes a gas storage box, a gas delivery port, a movable cylinder, a push plug, and a movable head. The gas storage box is fixedly installed inside the clamp head, gas delivery ports are opened on both sides of the gas storage box, the interior of the gas delivery port is fixedly connected to the gas delivery pipe B, the movable cylinder is fixedly installed on the outer wall of the gas storage box, the interior of the movable cylinder is movably connected to the movable head, the outer wall on the other side of the movable head is fixedly connected to the push plug, and the outer wall of the push plug and the interior of the movable cylinder are connected to each other.

[0010] Preferably, a conveying cavity is provided inside the gas distribution pipe and the telescopic rod, a transverse cavity is provided inside the rectangular plate, and both ends of the transverse cavity are fixedly connected to the outer wall of the limiting ring plate.

[0011] Preferably, the internal gas storage capacity of the gas cylinder ranges from eighty to ninety milliliters, the gas storage capacity of the gas storage box ranges from five to ten milliliters, and the total gas storage capacity of the gas distribution pipe, telescopic rod, and rectangular plate ranges from five to ten milliliters.

[0012] Preferably, a movable plug is movably sleeved inside the air storage cylinder, and an outer wall of the movable plug is fixedly connected to an outer wall of the screw.

[0013] Preferably, the method comprises the following steps:

[0014] S1: Installation steps, first clamp the inside of the sleeve and the outer wall of the turntable together, when clamping, the outer wall of the rectangular plate and the inside of the guide groove are plugged into each other to form a preliminary fixation, when the guide groove and the rectangular plate are plugged into each other, the telescopic rod will push the air distribution pipe to extend from the inside of the sleeve, during the extension process, the spring will be squeezed with the outer wall of the circular plate to form a rebound force, causing the rectangular plate to fit tightly inside the guide groove, and the air distribution pipe will form an outward thrust on the side rod during the outward movement, causing the side rod to move upward during the pushing process, and the clamp head on one side will move forward and fit against the surface of the sleeve.

[0015] S2: Limiting step, place the special-shaped part or small piece in the middle of the sleeve disc, then the movable heads installed around will contact the special-shaped part, and the movable heads with protrusions will shrink toward the inside of the movable cylinder, so as to facilitate fixing the special-shaped part in the middle, then hold the outer wall of the handle and rotate it, and during the rotation, the screw will be extended into the inside of the air storage cylinder, then the piston connected to the screw will squeeze the air stored in the air storage cylinder into the inside of the air supply pipe A and the air supply pipe B, and the air can be transported into the inside of the rectangular plate and the fixture head through the air supply pipe A and the air supply pipe B. When the gas is inside the rectangular plate, it can be stored inside the transverse cavity, so that the gas will push the round plug to move outward, and during the movement, the limiting ring plate can push the bayonet to be connected to the inside of the side hole, forming a limiting effect, and when the gas is transported into the inside of the fixture head, it will enter the inside of the movable cylinder and push the movable head contracted inside outward, so that the movable head can form a limiting effect on the special-shaped part contacting the outer wall.

[0016] S3: Disassembly step. When disassembly is required, hold the outer wall of the handle and twist it outward so that the screw can shrink to its original position. This causes the air cylinder to extract the internal air of the clamp head and the air distribution pipe, thereby canceling the limit of the special-shaped part so that it can be taken down. Because of the suction force, the pin will move to its original position, canceling the limit, so that the sleeve can be taken out, which can improve the use efficiency.

[0017] The beneficial effects of the present invention are: a workpiece clamping mechanism for a cradle-type workbench can clamp the sleeve disc on the outer wall of the turntable through a fixing piece, thereby playing a limiting role. Compared with the previous bolt fixing clamp, this sleeve connection method is faster and simpler.

[0018] Through the pneumatic mechanism, by rotating the handle, gas can be injected into the interior of the fixture head and the rectangular plate. The gas stored inside can push the parts out, thereby forming a limiting force to fix them in the position where they need to work, allowing the rectangular plate to form a secondary fixation. The movable head can form a relative force to fix the special-shaped parts, thereby improving the overall use efficiency.

[0019] By holding the outer wall of the handle and twisting it outward, the screw can be retracted to its original position, which causes the air cylinder to extract the internal air of the clamp head and the air distribution pipe. Suction will be formed during the extraction, which causes the extended parts to retract into their original positions, thereby canceling the limit of the special-shaped part, so that the limit can be quickly canceled and it can be removed, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the separation structure of the turntable and the sleeve disc of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the overall enlarged structure;

[0023] Figure 4 It is a schematic diagram of the overall structure of the turntable cross section of the present invention;

[0024] Figure 5 It is a schematic diagram of the overall internal structure of the clamp head of the present invention;

[0025] Figure 6 It is a schematic diagram of the overall structure of the gas distribution pipe cross section of the present invention.

[0026] In the figure: 1, bottom plate; 2, axle box A; 3, swivel arm; 4, axle box B; 5, turntable; 6, sleeve disc; 7, air storage cylinder; 8, screw rod; 9, handle; 10, air delivery pipe A; 11, air delivery pipe B; 12, rotating shaft; 13, connecting rod; 14, side rod; 15, clamp head; 16, air distribution pipe; 501, side hole; 502, guide groove; 601, movable port; 602, round plate; 151, air storage box; 152, air delivery port; 153, movable cylinder; 154, push plug; 155, movable head; 161, telescopic rod; 162, spring; 163, rectangular plate; 164, limit ring plate; 165, round plug; 166, diversion port; 167, bayonet. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] See also Figure 1-Figure 6 The embodiment of the present invention provides a technical solution: a workpiece clamping mechanism for a cradle-type workbench, a base plate 1, an axle box A2, a swivel arm 3, an axle box B4, one side of the top of the base plate 1 is fixedly connected to the axle box A2, the side of the axle box A2 is movably installed with the swivel arm 3, the other side of the swivel arm 3 is movably connected to the axle box B4, the bottom of the axle box B4 is fixedly connected to the top of the other side of the base plate 1, a turntable 5 is movably installed inside the swivel arm 3, four guide grooves 502 are opened on the circumferential outer wall of the turntable 5, side holes 501 are opened inside the two ends of the guide grooves 502, and the circumferential outer wall of the turntable 5 is sleeved with a fixing piece; the fixing piece includes a sleeve disc 6, a connecting rod 13, a side rod 14, a clamp head 15, an air distribution pipe 16, a telescopic rod 161, a spring 162, a rectangular plate 163, a limiting ring plate 164, a round plug 165, a diversion port 166, a bayonet 167, a notch is provided on the circumferential extension of the sleeve 6, the shaft 12 is movably installed inside the notch, the outer wall of the shaft 12 is fixedly sleeved with the connecting rod 13, the outer wall of the connecting rod 13 is fixedly installed with the side rod 14, the outer wall of the side rod 14 is fixedly installed with the clamp head 15, the outer wall of the side rod 14 is fitted and connected with the air distribution pipe 16, the inner thread of the air distribution pipe 16 is connected with the telescopic rod 161, the outer wall of the telescopic rod 161 is movably sleeved with the spring 162, the outer wall of the telescopic rod 161 and the inner movably sleeved with the turntable 5, the other side of the telescopic rod 161 is fixedly connected to the rectangular plate 163, the inner ends of the rectangular plate 163 are fixedly connected to the limiting ring plate 164, the inner part of the limiting ring plate 164 is movably sleeved with the bayonet 167, the other side of the bayonet 167 is fixedly connected to the round plug 165, and a diversion port 166 is provided inside the air distribution pipe 16.

[0029] Specifically, in an optional embodiment of the present invention, by providing a fixing piece, the sleeve 6 can be sleeved on the outer wall of the turntable 5, so that it can be quickly limited on the outer wall of the turntable 5. Compared with bolts, this fixing method is faster and the limiting speed is faster.

[0030] Specifically, in an optional embodiment of the present invention, a movable opening 601 is provided at the bottom of the groove, and the movable opening 601 is located on the circumferential outer wall of the turntable 5. The interior of the movable opening 601 is fixedly connected to a circular plate 602, and a circular opening is opened inside the circular plate 602. The back side of the movable opening 601 and the outer wall of the spring 162 fit together, and the interior of the circular opening and the outer wall of the telescopic rod 161 are movably connected, and the surface of the telescopic rod 161 and the outer wall of the air distribution pipe 16 fit together.

[0031] Specifically, in an optional embodiment of the present invention, the circular plate 602 can be provided to allow the gas distribution pipe 16 and the telescopic rod 161 to be sleeved inside the movable opening 601, thereby facilitating subsequent movable fixing and disassembly.

[0032] Specifically, in an optional embodiment of the present invention, the circumferential outer wall of the sleeve 6 is fixedly connected to the pneumatic mechanism; the pneumatic mechanism includes an air cylinder 7, a screw 8, a handle 9, an air pipe A10, and an air pipe B11. The outer wall of the air cylinder 7 is fixedly connected to the circumferential outer wall of the sleeve 6, the screw 8 is installed on the internal thread of the air cylinder 7, the handle 9 is detachably installed on the inside of the screw 8, the top of the air cylinder 7 is fixedly connected to the air pipe B11, the side of the air cylinder 7 is fixedly connected to the air pipe A10, a plurality of gas distribution pipes 16 are interconnected with the side of the air cylinder 7 through the air pipe A10, and a plurality of clamp heads 15 are interconnected with the top of the air cylinder 7 through the air pipe B11.

[0033] Specifically, in an optional embodiment of the present invention, a pneumatic mechanism is provided so that the gas stored inside can be transported to the position where work is required by rotation. The gas will extend the movable bayonet 167 inside the rectangular plate 163 so that it can be plugged into the position where work is required, allowing the rectangular plate 163 to be fixed for a second time. Because the screw 8 and the handle 9 are detachable, when time needs to be saved during work, the handle 9 can be removed, and then the motor and the screw 8 can be connected, thereby facilitating rotation to squeeze the air inside.

[0034] Specifically, in an optional embodiment of the present invention, the interior of the clamp head 15 includes a gas storage box 151, a gas delivery port 152, a movable cylinder 153, a push plug 154, and a movable head 155. The gas storage box 151 is fixedly installed inside the clamp head 15, and the gas delivery port 152 is opened on both sides of the gas storage box 151. The interior of the gas delivery port 152 is fixedly connected to the gas delivery pipe B11, and the movable cylinder 153 is fixedly installed on the outer wall of the gas storage box 151. The interior of the movable cylinder 153 is movably connected to the movable head 155. The outer wall on the other side of the movable head 155 is fixedly connected to the push plug 154, and the outer wall of the push plug 154 and the interior of the movable cylinder 153 are connected to each other.

[0035] Specifically, in an optional embodiment of the present invention, air can be stored by providing an air storage box 151. The gas then enters the interior of the movable cylinder 153 and shrinks into the movable head 155 to push it outward, thereby forming a clamping force with the special-shaped part in contact with the outer wall, so that it is fixed to the outer wall and is not easy to fall off during processing.

[0036] Specifically, in an optional embodiment of the present invention, a conveying cavity is opened inside the gas distribution pipe 16 and the telescopic rod 161, a transverse cavity is opened inside the rectangular plate 163, and the interiors of both ends of the transverse cavity are fixedly connected to the outer wall of the limiting ring plate 164.

[0037] Specifically, in an optional embodiment of the present invention, a transverse cavity is provided so that the transverse cavity can store airflow during operation, and the accumulated air can push the latch 167 to extend, thereby facilitating fixation and limiting.

[0038] Specifically, in an optional embodiment of the present invention, the internal gas storage capacity of the gas cylinder 7 ranges from eighty to ninety milliliters, the gas storage capacity of the gas storage box 151 ranges from five to ten milliliters, and the total gas storage capacity of the gas distribution pipe 16, the telescopic rod 161, and the rectangular plate 163 ranges from five to ten milliliters.

[0039] In this embodiment, by setting a suitable gas storage volume, it is convenient to completely discharge the gas, and can play a role of limiting and fixing.

[0040] Specifically, in an optional embodiment of the present invention, a movable plug is movably sleeved inside the air storage cylinder 7 , and an outer wall of the movable plug is fixedly connected to an outer wall of the screw rod 8 .

[0041] Specifically, in an optional embodiment of the present invention, a movable plug is provided so that when the screw rod 8 extends inwardly, the movable plug can squeeze the air inside so that the air can be transported to a position where work is required.

[0042] Working principle:

[0043] Preparation steps: first, clamp the inside of the sleeve 6 and the outer wall of the turntable 5 together. When clamping, the outer wall of the rectangular plate 163 and the inside of the guide groove 502 are plugged into each other to form a preliminary fixation. When the guide groove 502 and the rectangular plate 163 are plugged into each other, the telescopic rod 161 will push the air distribution pipe 16 to extend out from the inside of the sleeve 6. During the extension process, the spring 162 will be squeezed with the outer wall of the circular plate 602 to form a rebound force, causing the rectangular plate 163 to fit tightly inside the guide groove 502. During the outward movement, the air distribution pipe 16 will form an outward thrust on the side rod 14, causing the side rod 14 to move upward during the pushing process, while the clamp head 15 on one side will move forward and fit against the surface of the sleeve 6.

[0044] Working steps: place the special-shaped part or small piece in the middle of the sleeve disc 6. At this time, the movable head 155 installed around will contact the special-shaped part. When the special-shaped part has a protrusion and contacts the movable head 155, the movable head 155 will shrink toward the inside of the movable cylinder 153, so as to facilitate fixing the special-shaped part in the middle. At this time, hold the outer wall of the handle 9 and rotate it. During the rotation, the screw 8 will be extended into the inside of the air storage cylinder 7. At this time, the piston connected to the screw 8 will squeeze the air stored in the inside of the air storage cylinder 7 into the inside of the air supply pipe A10 and the air supply pipe B11. The air can be transported into the inside of the rectangular plate 163 and the clamp head 15 through the air supply pipe A10 and the air supply pipe B11. The gas is stored in the inside of the transverse cavity through the telescopic rod 161 and the gas distribution pipe 16, so that The gas will push the round plug 165 to move outward. During the movement, the limiting ring plate 164 can push the locking pin 167 to be locked inside the side hole 501, forming a limiting effect. The excess gas inside can be transported into the next rectangular plate 163 through the diversion port 166 to facilitate its fixation. When the gas is transported into the interior of the clamp head 15, it will enter the interior of the movable cylinder 153 and push the movable head 155 contracted inside outward, which allows the movable head 155 to form a squeezing force on the irregular parts in contact with the outer wall. At this time, the clamp heads 15 on all sides will form a clamping force on the middle part, so that the irregular parts are tightly fixed in the middle of the sleeve 6. The gas can be transported into the interior of the next clamp head 15 through the gas supply pipe B11 connected to the clamp head 15, which is convenient.

[0045] Disassembly steps: When disassembly is required, hold the outer wall of the handle 9 and twist it outward so that the screw 8 can shrink to its original position, which causes the air storage cylinder 7 to extract the internal air of the clamp head 15 and the air distribution pipe 16. Suction will be generated during the extraction, which causes the extended parts to retract into their original positions, thereby canceling the limit of the special-shaped parts so that they can be removed. Because of the suction, the pin 167 will move to its original position, canceling the limit, so that the sleeve 6 can be taken out, thereby improving the efficiency of use.

[0046] The above description only describes the specific implementation mode of the present invention. Various examples do not limit the essential content of the present invention. After reading the description, ordinary technicians in the relevant technical field can modify or deform the specific implementation modes described above without departing from the essence and scope of the invention.

Claims

1. A workpiece clamping mechanism for a cradle-type worktable, comprising a base plate (1), an axle box A (2), a swivel arm (3), and an axle box B (4), wherein one side of the top of the base plate (1) is fixedly connected to the axle box A (2), the swivel arm (3) is movably mounted on the side of the axle box A (2), the other side of the swivel arm (3) is movably connected to the axle box B (4), the bottom of the axle box B (4) is fixedly connected to the top of the other side of the base plate (1), and a turntable (5) is movably mounted inside the swivel arm (3), characterized in that: The outer circumferential wall of the rotating disk (5) is provided with four guide grooves (502), both ends of the guide grooves (502) are provided with side holes (501), and the outer circumferential wall of the rotating disk (5) is sleeved with a fixing piece; The fixing member comprises a sleeve (6), a connecting rod (13), a side rod (14), a clamp head (15), an air distribution pipe (16), a telescopic rod (161), a spring (162), a rectangular plate (163), a limiting ring plate (164), a round plug (165), a diversion port (166), and a bayonet (167). A notch is provided on the circumferential extension of the sleeve (6). A rotating shaft (12) is movably installed inside the notch. The outer wall of the rotating shaft (12) is fixedly sleeved with the connecting rod (13). The outer wall of the connecting rod (13) is fixedly installed with the side rod (14). The outer wall of the side rod (14) is fixedly installed with the clamp head (15). The outer wall of the side rod (14) is attached to the outer wall of the rotating shaft (12). The air distribution pipe (16) is connected to the air distribution pipe (16), the internal thread of the air distribution pipe (16) is connected to the telescopic rod (161), the outer wall of the telescopic rod (161) is movably connected to the spring (162), the outer wall of the telescopic rod (161) is movably connected to the inside of the turntable (5), the other side of the telescopic rod (161) is fixedly connected to the rectangular plate (163), the inner ends of the rectangular plate (163) are fixedly connected to the limiting ring plate (164), the inner part of the limiting ring plate (164) is movably connected to the bayonet (167), the other side of the bayonet (167) is fixedly connected to the round plug (165), and the inner part of the air distribution pipe (16) is provided with a diversion port (166).

2. A workpiece clamping mechanism for a cradle-type workbench according to claim 1, characterized in that: A movable opening (601) is provided at the bottom of the notch, and the movable opening (601) is located on the circumferential outer wall of the turntable (5). The inside of the movable opening (601) is fixedly connected to a circular plate (602), and a circular opening is provided inside the circular plate (602). The back side of the movable opening (601) and the outer wall of the spring (162) are in contact with each other, and the inside of the circular opening and the outer wall of the telescopic rod (161) are movably connected, and the surface of the telescopic rod (161) and the outer wall of the gas distribution pipe (16) are in contact with each other.

3. The workpiece clamping mechanism for a cradle-type workbench according to claim 1, characterized in that: The circumferential outer wall of the sleeve disc (6) is fixedly connected to the pneumatic mechanism; The pneumatic mechanism comprises an air storage cylinder (7), a screw rod (8), a handle (9), an air supply pipe A (10), and an air supply pipe B (11); the outer wall of the air storage cylinder (7) is fixedly connected to the circumferential outer wall of the sleeve (6); the screw rod (8) is installed on the inner thread of the air storage cylinder (7); the handle (9) is detachably installed on the inner part of the screw rod (8); the top of the air storage cylinder (7) is fixedly connected to the air supply pipe B (11); the side of the air storage cylinder (7) is fixedly connected to the air supply pipe A (10); the multiple air distribution pipes (16) are interconnected with the side of the air storage cylinder (7) through the air supply pipe A (10); and the multiple clamp heads (15) are interconnected with the top of the air storage cylinder (7) through the air supply pipe B (11).

4. The workpiece clamping mechanism for a cradle-type workbench according to claim 1, characterized in that: The interior of the clamp head (15) comprises a gas storage box (151), a gas delivery port (152), a movable cylinder (153), a push plug (154), and a movable head (155). The gas storage box (151) is fixedly installed inside the clamp head (15). The gas delivery ports (152) are provided on both sides of the gas storage box (151). The interior of the gas delivery port (152) is fixedly connected to the gas delivery pipe B (11). The movable cylinder (153) is fixedly installed on the outer wall of the gas storage box (151). The interior of the movable cylinder (153) is movably connected to the movable head (155). The outer wall on the other side of the movable head (155) is fixedly connected to the push plug (154). The outer wall of the push plug (154) and the interior of the movable cylinder (153) are mutually connected.

5. The workpiece clamping mechanism for a cradle-type workbench according to claim 1, characterized in that: The gas distribution pipe (16) and the telescopic rod (161) are both provided with a conveying cavity, the rectangular plate (163) is provided with a transverse cavity, and both ends of the transverse cavity are fixedly connected to the outer wall of the limiting ring plate (164).

6. The workpiece clamping mechanism for a cradle-type workbench according to claim 4, characterized in that: The internal gas storage capacity of the gas storage cylinder (7) ranges from eighty to ninety milliliters, the gas storage capacity of the gas storage box (151) ranges from five to ten milliliters, and the total gas storage capacity of the gas distribution pipe (16), the telescopic rod (161), and the rectangular plate (163) ranges from five to ten milliliters.

7. The workpiece clamping mechanism for a cradle-type workbench according to claim 1, characterized in that: A movable plug is movably sleeved inside the gas storage cylinder (7), and the outer wall of the movable plug is fixedly connected to the outer wall of the screw rod (8).

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