About cutting

Workpiece sample isolation is the key of material in cutting.

The following listed requirements about sample extraction is related to how to choose the sample, and the effect of the cutting process on the material and also the cutting process itself.

• Sample must show the parent artifacts or components extracted features.
• Cutting, the cutting wheel may not locked.
• Cutting wheel only minimal wear and tear.
• Remove the machine, sample must be cooled to be able to touch.
• The sample surface must not have thermal damage/burns.
• There must be smooth, uniform surface with homogeneous scratches.
• Must exist burrs.

For cutting itself, you can use many different ways, but to meet the requirements of cutting material phase, only a handful of technology is feasible and the wet abrasive cutting as described below.

How to cut

Select cutting machine

Decided to the size of the cutting machine, the size of the workpiece should be embedded in the cutting room, because the workpiece and the diameter of the cutting wheel should be big enough to cut off the workpiece.

• The workpiece or cutting wheel in mechanical along three direction (x, y, and z) mobile can be predefined in the programming of automatic cutting machine, can also be done by manual cutting machine operators.

• Cutting machine provides the possibility to choose cutting patterns of different, thus expands the scope of the size of the workpiece and the material.

• Cutting precision, conform to reserve the ability of cutting lines, such as close to the inspection area, as defined by the equipment.Precision cutting machinery can be precisely the workpiece positioning within a few microns.

The choice of the cutting wheel

The characteristics of the cutting wheel is the key factor, the choice of the cutting wheel depends mainly on cutting material.Grinding wheel cutting wheel depends on:

• Grinding wheel design
• Abrasive type
• Adhesive type

Design differences including size (such as the diameter and thickness) and the layout of the abrasive (straight edge on the perimeter or distributed throughout the cutting wheel body).Change the abrasive size and concentration can realize the optimization of the performance.

Based on phenolic plastic cutting wheel, abrasive materials with different optimization is given below options:

Metallic bond diamond abrasive is typically used for moderate hardness of nonmetal, such as:

Cutting pattern

Cutting is the most commonly used cutting pattern directly, in this mode, the cutting wheel can move directly to the workpiece.

To improve cutting or extension machinery directly or the application range of the cutting wheel, the other cutting patterns may be more beneficial.Generally, the improvement related to reduce the contact area of the whole cutting process, it exists the following advantages:

• When the unit area of contact force increase, can cut a hard material.Standard material cutting faster, at the same time, can reduce the cutting wheel wear.Than is used to specify the materials directly used for cutting cutting wheel more hard cutting wheel.

• Due to the contact area is constantly changing, cooling can be improved.In turn, this means that can reduce the risk of damage to the workpiece, and reduce the cut after the preparation work.