What is spot facing process?

What is spot facing process?

The most common application of spotfacing (spot facing) is facing the area around a bolt hole where the bolt’s head will sit, which is often done by cutting a shallow counterbore, just deep enough “to clean up”—that is, only enough material is removed to get down past any irregularity and thus make the surface flat.

What is the use of spot facing?

Spot facing is a machining operation for producing a flat seat for bolt head, washer or nut at the opening of a drilled hole. The tool is called a spot facer or a spot facing tool. Spot facing is similar to counter-boring, except that it is shallower.

What is a spot face cutter?

Back Spotface Cutters are designed for use in restricted areas where conventional spotfacing cannot be accomplished. Various styles and sizes are supplied with quick release Bayonet Holding or Pin Type Drives.

What is meant by counter bore?

A counterbore (symbol: ⌴) is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A spotface often takes the form of a very shallow counterbore.

What is spot facing in mechanical engineering?

Spot facing: Spot facing is the operation of smoothing and squaring the surface around and at the end of a hole so as to provide a smooth seat for a nut or for the head of a cap screw. Spot facing is generally done on castings and forgings.

What is countersinking and Counterboring?

Countersinking creates a conical hole matching the angled shape on the underside of a flat-head screw. Counterboring creates a flat-bottom hole, which allows the head of a screw or bolt with a flat underside to rest solidly in the counterbore, often atop a washer.

What is counter boring operation?

Explanation: Counter boring is the operation of enlarging the end of a hole using a tool called counterbore. Counter boring is done for accommodating socket head screws.

Why do you need to use spot facing?

Spot facing is the act of smoothing a small area of a rough surface. Normally, face milling is performed on casted parts to remove surface imperfections and improve the overall finish of the product. However, face milling is both time consuming and expensive.

Which is the best definition of a spot face?

A spotface or spot face is a machined feature in which a certain region of the workpiece (a spot) is faced, providing a smooth, flat, accurately located surface.

What does it mean to use spot facing in milling?

This article considers restrictions in place for effective and economical spot facing in milling. Spot facing is the act of smoothing a small area of a rough surface. Normally, face milling is performed on casted parts to remove surface imperfections and improve the overall finish of the product.

What’s the difference between backspotfacing and spot facing?

Spot facing of larger planar surfaces sometimes employs face mills. Backspotfacing ( back spot facing) is analogous to backboring, meaning that the tool manages to reach to the far side of the workpiece (away from the spindle side) and cut back toward the spindle.