How the spot facing operation is performed?
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.
Which tool is used for spot facing operation?
Explanation: 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.
What is a back counterbore?
A customized automatic back boring solution for use in multiple applications.
What is spotface counterbore?
A spotface provides an accurate bearing surface for the underside of a bolt head. Counterbore. Symbol. Countersink Callouts. Countersink – To recess a hole with a conically (cone) shaped tool to provide a seat for flat head screws.
Which type of milling machine is used for spot facing?
Seco spot facing mills are cutters for milling spot faces of blind and countersunk holes. Key benefits include smooth cutting, reduced spindle bearing wear via a highly balanced tool and high security through a center-lock clamping system, all engineered in an economical solution.
Why spot facing is required?
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 back spotface?
Back spotfacing is the machining of large spotfaces and counterbores without turning the work piece over, or spotfaces and counterbores that are inaccessible from the opposite side. This means that the machining is done on the same side as the drilled hole.
What are the advantages of using spot facing operation?
Automatic back spotfacing enhances the machine/operator safety by automating manufacturing processes and eliminating a manual interface with the operator using a manual back spotface tool. The automatic process is also faster, which reduces machining time and improves profitability on the machining process.
What is the difference between spot facing and Counterboring?
The difference between counterboring and spotfacing is that a counterbored surface usually has a shoulder at the bottom of the enlarged hole, while a spotfaced surface is flat and always at right angles with the axis of the hole.
What tool is used to make a counterbore?
The back counterbore, or back spot facer as it is commonly known, is a versatile tool intended to go through a pre-bored hole to produce a counterbore on the backside of the hole.
Why is counterboring used?
A counterbore is used to enlarge the opening of a hole producing a flat bottom so a socket-head screw will fit flush with the surface of the part. Lock washers may be used to ensure a secure assembly. Typically counterbores are used for a single purpose. Countersinks have a greater range of applications and angles.