Tooth-engagement pneumatic vise

Abstract

This invention provides a tooth-meshing actuated pneumatic clamping vise, the main features of which include: a body with a chuck guide rail at the top and an actuation cylinder at the bottom, the actuation cylinder having an air inlet on one side; a plurality of movable chucks sliding on the chuck guide rail, each movable chuck having jaws on its corresponding side, providing clamping and releasing modes in use, and each movable chuck having a driven tooth row at its bottom; a base plate sealing the opening of the actuation cylinder; a piston sliding inside the actuation cylinder; a drive tooth row formed on the piston shaft, and the drive tooth row being arranged along the axial direction of the shaft, thus enabling the drive tooth row to synchronously follow the piston's up and down displacement; a plurality of transmission gears rotatably mounted transversely on the body, each transmission gear including a driven side and a transmission side, wherein the driven side meshes with the drive tooth row, and the transmission side meshes with the driven tooth row of the corresponding movable chuck.

Claims

1. A tooth-engaged pneumatic clamping vise, comprising: a body including a top and a bottom, wherein the top has a chuck guide rail, and the bottom has an actuating cylinder with an opening facing downwards, the actuating cylinder having an air inlet on one side for introducing air pressure, and the actuating cylinder having a guide groove at its top; a plurality of movable chucks slidably disposed on the chuck guide rail of the body, the movable chucks having jaws on corresponding sides, and the jaws of the corresponding movable chucks having a clamping mode and a releasing mode in use, and each movable chuck having a driven tooth row at its bottom; a base plate for sealing the opening of the actuating cylinder; a piston slidably disposed within the actuating cylinder and capable of vertical displacement, and the piston having a shaft at its top that slidably disposed in the guide groove of the actuating cylinder; A drive gear set is formed on the piston shaft and is arranged axially along the shaft, so that the drive gear set synchronously follows the piston's up and down displacement; and a plurality of transmission gears are rotatably mounted on the body in a transverse direction. Each transmission gear includes a driven side and a transmission side, wherein the driven side meshes with the drive gear set, and the transmission side meshes with the driven gear set of the corresponding movable chuck; thereby, when the piston is in an upward displacement state, the transmission side of the transmission gear drives the corresponding movable chuck jaws to open; conversely, when the piston is in a downward displacement state, the transmission side of the transmission gear drives the corresponding movable chuck jaws to clamp.

2. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein the plurality of movable jaws are configured as two sets of movable jaws arranged opposite each other along an axial direction.

3. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein the plurality of movable chucks are arranged in a spaced-out ring along a circumference.

4. The tooth-operated pneumatic clamping vise as described in claim 1, wherein the drive teeth formed on the shaft are distributed only in the region corresponding to the driven side of the transmission gear.

5. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein the drive teeth formed on the shaft are distributed in an annular region of the shaft.

6. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein the air inlet provided on one side of the actuating cylinder includes an upper air inlet and a lower air inlet, the air pressure introduced by the upper air inlet is used to drive the piston to produce an upward displacement action, and the air pressure introduced by the lower air inlet is used to drive the piston to produce a downward displacement action.

7. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein the air pressure introduced by the air inlet provided on one side of the actuating cylinder can push the piston upward, and a plurality of elastic elements are provided between the top surface of the piston and the top surface of the actuating cylinder to press the piston downward in normal operation.

8. The tooth-engagement pneumatic clamping vise as described in claim 1, wherein each of the transmission gears is spun onto the body via a horizontal shaft, such that each movable jaw has a clearance portion at a corresponding location, allowing the horizontal shaft to pass through and maintain the movable space of each movable jaw.

Images