In machining, only when the positioning surface and positioning reference are close together, the dimensions made will be completely correct.The measuring range of gas pressure on the fixture will be different depending on the degree of fitting between the positioning surface and the datum surface.If not fitted, the differential pressure beyond the range will output an alarm signal and the equipment will stop running to avoid waste.

The high-precision air-tightness detection vulcanized filling glue clamping system is divided into two categories: pulling-type internal expansion fixture and pulling-type external round fixture. It is suitable for hydraulic and pneumatic tooling of CNC lathes and machining centers. It has the following characteristics:

1.Parallel clamping, expanding sleeve contact area of the inner hole is larger, change the line contact between the ordinary drum clip and the workpiece to surface contact, the workpiece is not easy to deformation.When the size of the bar changes, the collet can remain parallel to the bar.Parallel clamping minimizes the "backward" effect of the bar and allows for the same clamping capability as the traditional chuck with a smaller pull on the tie rod.Pull back design, that is, expand the cover to move back, drive the workpiece back, end face more fit positioning.

2.The elastic grooves are connected by vulcanized silicone rubber (as shown in FIG. 9), which can cooperate with the workpiece to achieve a large gap, and have a clamping range of ± 0.5mm than the nominal size, within which the rod size can be changed without changing the cartridge clip.Adapt to manipulator, not afraid of empty pull scrap sleeve.
3.Have certain shock absorption ability, reduce the roughness loss caused by machine tool or tool vibration.

4.Vulcanized silicone rubber does not become brittle and can block coolant.Because of this sealed design, chip can be prevented from entering the barrel clip system, while ensuring the long life of the barrel clip.

5.Chuck tensioning has good synchronization and high clamping accuracy, which can be controlled within 0.010mm, far higher than the clamping accuracy of hydraulic chuck of 0.03mm.

6.Equipped with air tightness detection function, if the workpiece axis and spindle axis deviate from each other when the workpiece is installed, the gas will overflow and trigger the pressure detector, send signals to the machine tool control system, and can generate prompt signals to force the machine tool to stop, which plays an automatic error-proof role.

(edit：admin)