CNC machining fixture refers to a device used to fix CNC machining objects in the process of mechanical manufacturing, allowing CNC machining to establish the correct position and accepting construction or testing, also known as fixtures. Broadly speaking, in any process in the process, a device used to quickly, conveniently and safely install CNC machining parts can be called a fixture. Next, we will lead everyone to understand the ten common fixtures for CNC machining.
Dividing head
The indexing head or indexing head is a kind of machine tool accessory that allows CNC machined parts to rotate in predetermined precise increments and CNC machined repeated contours. The indexing head achieves precise rotation by using a disc mounted on the spindle. There is a row of concentric equidistant holes through the main shaft on the disk. A crank handle equipped with a spring locking pin is the distance required to turn the main shaft. Within this distance, the locking pin is inserted into one of the holes to lock the main shaft in place.
Spring collet / collet
Spring chuck (collet chuck). It is a cylindrical fixture used to confine drill bits or milling cutters on a CNC milling machine. It is a kind of fixing device used to fix and strengthen the CNC machined parts that need to be modified.
EROWA fixture
The EROWA fixture uses the prism of the chuck to form the positioning accuracy between the flexible positioning piece and the rigid positioning prism.
It can guarantee the repeat positioning accuracy of /-0.002mm. The electrode will not work without it; the four-axis CNC machining will not work without it; the five-axis CNC machining will not work even without it.
Pneumatic Cylinder Fixture
The pneumatic cylinder fixture adopts the pneumatic transmission method to achieve the specified requirements of the corresponding parts of the actuator. There are sequences, motion tracks, and actions with a certain speed and time to compare with the set position, and then adjust through the control system. So that the actuator can reach the set position with a certain precision.
In addition to the above-mentioned CNC machining fixtures, there are magnetic platform, spindle and tool holder, vise, T-block and screw, combination of pressure plate and nut, T-table, chuck and other fixtures are all good choices. Choose different fixtures according to the different shapes of CNC machined parts, so that high-quality and accurate CNC machined parts can be made.