Facing Head

Facing Heads Overview

Facing heads typically come in two sizes. They allow precise boring work to be carried out as simply as possible by using the automatic movement of the carriage. Face heads are also used for facing surfaces as well as recessing, for instance, grooves. For facing operations, you can control the stopping of the tool carriage by using the adjustable position stop of the facing head, which allows repetitive operations to be performed without having to reset the dimensions.

Following the above, the stop can also be adjusted without having to read the vernier when the facing head is in manual control mode in both translation movements. This allows the position of the tool carriage to be acquired precisely without automatic advance, as well as manual advance which allows the tool to be withdrawn when reaching an adjustable stop.

Here we’ve outlined some of the key features of the facing heads:

● Facing heads are able to carry out lathe-type operation on boring mills.
● Facing heads typically come in an exceptionally large diameter range, going from 0 mm to 1700 mm).
● Facing heads are extremely durable and robust thanks to the rigid metal like steel used to construct them.
● Facing heads have superb material removal rates.
● Facing heads are able to ensure a backlash-free operation.
● Facing heads are known for their phenomenal flexibility, which enable a wide range of operations involving faces, tapers, radii, O.D.s, and contours.
● Facing heads are well adapted to repeatable set-ups while still retaining the required accuracy.
● Facing heads are compatible with other industry-standard top tooling inserts and components. 

Construction and Mechanism of Facing Heads

Facing heads, as well as the common counterpart boring heads, are both designed for simple operation and construction. Their design mainly revolves around optimizing the rigidity and freedom of movement from backlash in the tool carriage which is mounted on substantially larger slide ways. All parts of facing heads are typically made of chromium-nickel steel, and are heat treated and ground, including the thread and the control screw.

The facing heads basically employ a solid cylindrical body coupled with a properly shaped shank to allow the machine tool spindle to be mounted. The cylindrical body typically employs the dove tail sideways (usually proportioned) that contain the tool carriage. The tool carriage can be controlled manually as it traverses radially, while the machine spindle normally remains still. 

Alternatively, the automatic radial traverse movement can be conveyed to the tool carriage as the machine spindle spins. Such movement enhances flexibility, allowing a broad range of machining operations to be performed without having to rely on special tooling arrangements. Operations like boring and turning of bosses, surfacing bosses or bores, grooving operations for chamfering, etc. all take advantage of this kind of operation flexibility. 

Furthermore, the adjustable stops of the facing heads restrain the carriage displacements in the directions of when in the feed direction in automatic motion or manually controlled. These facing heads are high precise attachments that are perfect for tooling jobs requiring high accuracy and delicacy. They are often used for mass production operations as well. 

Applications of Facing Head

Facing heads are frequently used with CNC machinery, which is why they are sometimes referred to as the CNC facing heads. When using CNC facing heads or boring heads, an additional NC-axis is often necessary. To guarantee stability, manufacturers often incorporate a U-axis into the CNC facing heads so that the admission of the tool is realized by the prismatic tool interface, enabling the tools to be changed automatically through the pick-up magazine.

Furthermore, CNC facing heads are typically used in universal milling, boring machines, special machines, jig borers as well as transfer lines for a series of quantity production. They are specifically designed to be suitable for facing, turning inside and outside diameters, taper turning and find boring operations. CNC facing heads are also able to maximize productivity through hard turning, contributed by the integral construction that optimize stability. For many CNC facing heads, the slides are hydraulically actuated. Here are some of the most common applications for facing heads:

● Boring Mills
● Lathes
● Radial Drills
● Transfer Units
● Milling Machines

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