How to Select Woodworking CNC Router Machine Tools?

Posted by Mary Zhang on July 12th, 2016

How to select woodworking cnc router machine tools?

1. The nature of the material to be cut

The object material is solid wood and wood composites cutting timber. Solid wood can be further divided into soft wood, hard wood and modification of wood; wood-based composite materials including laminated veneer lumber, plywood, chipboard, OSB, wafer board, gypsum Particleboard, cement-bonded particleboard, hardboard, medium density fiberboard, fiberboard, backboard, glued laminated timber. Some wood or wood composites work piece after single-sided or double-sided veneer finishing.

2. Cutting directions

Wood cutting, according to blade wood cutting timber in the fiber direction is divided into vertical and horizontal, side and longitudinal cutting end, longitudinal and transverse end.

3. Woodworking carving machine and cutting tools rotating direction and the feed direction

Depending on the direction of rotation of the cutter shaft and workpiece direction of feed, determine the direction of tilt of the blade on the tool.

4. The cutting tool and the workpiece stability

Tool and the workpiece during the cutting process consists of several aspects of the stability, stability refers to the wood workpiece in machining of smoothly feeds without jumping. Strengthening the measures taken include reducing the workpiece stability of gravity and increases the contact area.

5. Machined surface quality requirements

Wood surface including surface roughness, geometry, shape and location accuracy.

Wood carving machine

How to reduce the beating of cnc wood carving machine tools?

In the process, if the tool center and the main shaft rotation center of wood carving machine is inconsistency, it will cause diameter run-out to the tool, which is what we usually call the tool rotate different center. To further understand, what is normal high speed should be a vertical line, if not in the same center it would be a different taper, thus machining accuracy and effect will be decreased, as well the tool will easily be broken. Let’s discuss how to reduce machining cutting tool run-out.

First of all, let us be clear that the coordination between tools, chucks and nuts, cutting tool position and means, carving tools quality, these all factors are influence to the beats of the tool itself. In this factor, we would note that collet chucks and nuts should be clean without dust. Knife strength should be proper, too large and too little is bad. There is a very important thing to note that the tool extension length should be smaller. Spindle motor speed when it's necessary to note that requirements for spindle speed is not very high quality material, such as copper, we can choose a reasonable speed to reduce the radial runout.

Second, in the process of wood carving, how to reduce radial runout.

The reason is that the radial cutting force exacerbated the runout, so minus the radial cutting force is an important principle to educe radial runout. Using sharp carving tool: sharp tool for carving will reduce the overall of cutting force, thus tool by of radial cutting force become small, so as to reduce tool of radial beat; knife surface be smooth: in processing, reduce friction and cutting force, thus reduce the tool of radial beat; in fine processing, using inverse milling: note this just in fine processing.

When you are using conventional milling, cutting force is always in the direction of the tool to the workpiece, so that tool in the manufacturing of more stable; then use strength of woodworking machine tool, increasing the strength of the sword can beaded through the diameter of the cutter bar, Arbor diameter of 20%, in the case of radial cutting force by the same tool radial can be reduced 50%.