一种辅助夹紧机构
By designing a combined structure of grippers and pushers, adaptive clamping of thin-walled parts was achieved, solving the gripper tolerance problem during the clamping process and realizing the machining stability and accuracy of thin-walled parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-17
AI Technical Summary
When machining thin-walled parts, the blank tolerance of the clamping jaws fluctuates, causing clamping deformation. Existing fixtures cannot effectively adapt and adjust, resulting in unstable clamping.
An auxiliary clamping mechanism was designed, which adopts a combination structure of a gripper, a pusher, and a drive unit. By using the protrusions, notches, and bevels between the pusher and the gripper, the gripper can slowly approach and adaptively clamp. The layout of the drive unit below the pusher allows the gripper to move within a certain range before it is fully clamped, until it is finally positioned and clamped.
It effectively reduces clamping deformation, improves the processing stability and accuracy of thin-walled parts, and ensures the adaptability and stability of the clamping process.
Smart Images
Figure CN224509463U_ABST
Abstract
Claims
1. An auxiliary clamping mechanism, characterized by: The device includes a housing (1), grippers (2), a pusher (3), and a drive unit (5) that drives the pusher (3) to move closer to or away from the grippers (2). There are two grippers (2), which are slidably mounted on one end of the housing (1) and slide closer to or away from each other. The housing (1) has a limiting block (112) between the two grippers (2) to limit the sliding limit of the grippers (2). A return spring (8) is also clamped between the two grippers (2). The pusher (3) is located at the grippers (2). Below, the gripper (2) has a mating protrusion (22) protruding towards the pusher (3). The pusher (3) has a mating notch (32) for the mating protrusion (22) to enter. There is a mutually mating push slope (33) between the mating protrusion (22) and the mating notch (32). The drive member (5) pushes the pusher (3) closer to the gripper (2) and pushes the two grippers (2) closer to each other. The pusher (3) is slidably mounted on the drive member (5) and the sliding direction is the same as the sliding direction of the gripper (2).
2. An auxiliary clamping mechanism according to claim 1, wherein: The two grippers (2) have mounting holes (21) on their opposite sidewalls for mounting the reset spring (8).
3. An auxiliary clamping mechanism according to claim 1, wherein: It also includes a push block (4), the drive member (5) includes a piston rod (51), the piston rod (51) has a threaded hole (514) for the push block (4) to be threadedly installed, and the push block (4) is slidably installed by the push claw (3).
4. An auxiliary clamping mechanism according to claim 1, wherein: The pushing slope (33) is the groove wall of the mating notch (32), and the mating protrusion (22) is in line contact with the pushing slope (33).
5. An auxiliary clamping mechanism according to claim 3, wherein: When the top wall of the push block (4) abuts against the push claw (3), the mating protrusion (22) and the bottom of the mating notch (32) are spaced apart.
6. An auxiliary clamping mechanism according to claim 3, wherein: The push block (4) has an installation groove (43) for the lower part of the push claw (3) to be inserted. The installation groove (43) passes through the push block (4) along the sliding direction of the claw (2). The installation groove (43) is divided into two installation protrusions (44) in the part of the push block (4) where the installation groove (43) is opened. The installation protrusions (44) have through waist-shaped sliding holes (31). The lower part of the push claw (3) has shaft holes (45) corresponding to the waist-shaped sliding holes (31). The installation protrusions (44) and the push claw (3) are connected by a rotating shaft (7). The middle part of the rotating shaft (7) is located in the waist-shaped sliding hole (31). The two ends of the rotating shaft (7) pass through the two shaft holes (45) and are fixed to the installation protrusions (44).
7. An auxiliary clamping mechanism according to claim 3, wherein: The outer shell (1) comprises, from top to bottom, an upper shell (11), a middle shell (12), and a lower shell (13) connected to each other. The lower shell (13) is used to install the driving component (5). The middle shell (12) has a sliding groove (121) at one end away from the lower shell (13) for the gripper (2) to slide. The upper shell (11) restricts the gripper (2) from disengaging from the middle shell (12). The pushing block (4) is located inside the middle shell (12).
8. An auxiliary clamping mechanism according to claim 7, wherein: The drive component (5) includes a piston rod (51) and a piston cover (52). The lower shell (13) has an oil cavity (6). The piston cover (52) closes the oil cavity (6). One end of the piston rod (51) is located inside the oil cavity (6), and the other end passes through the piston cover (52) and is located outside the oil cavity (6). The end of the piston rod (51) located inside the oil cavity (6) is provided with a partition ring protrusion (511). The partition ring protrusion (511) divides the oil cavity (6) into upper and lower parts.