What are the differences between precision engraving machine and other CNC machine tools?
The difference between the engraving machine and the other three models:
1, -- CNC milling and machining center for the completion of large amount of milling workpiece processing equipment.
2, -- CNC engraving machine is used to complete a small amount of milling, or soft metal processing equipment.
3, -- high speed cutting machine tool is used to complete moderate milling, and the milling of the grinding amount to the lowest processing equipment.
In-depth analysis of the above equipment structure can help us make the right choice:
I. from a mechanical perspective
The machine tool is divided into two parts, the moving part and the non-moving part: the table, slide, cross flower table and so on for the moving part, bed, column and so on for the non-moving part.
1, -- CNC milling machining center:
The non-moving part is very rigid and the moving part is very rigid.
Advantages: can carry out heavy cutting; Disadvantages: due to the same large moving parts, sacrificing the flexibility of the machine tool, there is nothing to be done for small parts and fast feed.
2, -- CNC engraving machine
Non - moving part of the steel requirements of the moving part of the steel to be flexible as a precondition, as light as possible, while maintaining a certain degree of steel.
Advantages: can be relatively small processing, processing precision. For soft metal can be high-speed processing; Disadvantages: heavy cutting is not possible due to poor rigidity.
3, -- high-speed cutting machine tool
The non-moving part is very strong and the moving part is very strong and as light as possible.
Advantages: capable of medium and small cutting (e.g., a flat knife with a 10, for 45 steel (300) with a depth of 0.75 is good); Disadvantages: high efficiency and low cost when used correctly. Improper use will soon lead to a mountain of waste.
How to achieve the above requirements from the mechanical light, rigid and good contradiction, the key lies in the mechanical structure of the effort.
1. The bed body adopts the network structure with high and low ribs, and some directly adopt the connected hexagonal network structure of honeycomb.
2, -- super wide column and beam, you know the gantry structure because of its excellent symmetry and excellent steel has been high-speed cutting equipment manufacturers as the preferred structure.
3, -- for the moving part and CNC milling significant difference is to widen a lot of guide rail and the distance between the guide rail, to overcome the problem of bad torque.
4, from the material point of view, the general use of meehana cast iron, that is to say, the inoculation of cast iron, cast iron in pouring iron when adding a certain proportion of silicon (Si) so as to change the internal structure of iron, make it more resistant to stamping, the rigidity has been significantly improved.
5, -- the rigidity of the machine tool is mainly used to overcome the moving part in the high-speed movement of the non-moving part of the strong impact, so the guide rail, screw requirements thicker, and strengthen the rigidity of the connecting part.
Two, -- from the numerical control Angle analysis
1, -- CNC milling machining center on the CNC system speed is general, the spindle speed of 0~8000RPM.
2, -- engraving machine requires high-speed CNC system, the spindle speed of about 3000~30000RPM.
3, high-speed cutting machine tools require high-speed CNC system and excellent servo motor characteristics, spindle speed of about 1500~30000RPM.
Iii. Analysis of programming software
From the perspective of software, standard CAD/CAM software such as MasterCamCimatronPEUG can be used in CNC milling machining center and high-speed cutting machine tool fine carving machine.
Milling machine is usually thought that Cimatron dao is better, fully fastidious to the new version of the software tool every moment of the uniformity of cutting quantity, especially the knife into the out of the work of a moment of speed and rounding, and the poor in the inflection point follow algorithm (followingError) problem, further put into results and design graphics, CAD part just intuitive three-dimensional entity model has been widely used by IGS into CAM software such as Solidworks for processing.
But don't worry, CAD/CAM is growing much faster than CNC.
Due to the particularity of the cutting tool, the carving process needs to be controlled with a relatively small Angle. TYPE3 and JDPaint are better.
