Carved machine accuracy requirement and testing
Now carved machine should be very widely in our country, there are too many people know that carved machine, but know carved machine rarely for high accuracy requirement, then carved machine which accuracy requirement? Make the product can do a few silk error? How to detect the carved machine precision meets the process requirements?
1. The structure of the carved machine with general nc machine tools are about the same, the precision value is the machining accuracy and repeat positioning accuracy, generally the carved machine has eight guide (x, y axis each article 2, article 2 Z axis), article 2 screw, a number of bearings, so you might think of decided to carved machine accuracy should be the guide screw and bearings, but in fact is not the case, determine the carved machine precision and not a guide screw and bearing. Carved on market in what is now the screw machine industry, guides and bearing are using precision level above, precision in micron level, so the error can be ignored, the key is lies in whether the precision components installed in place, installation of linear guide in the traditional way is to use shovel, mat of copper, the fitter skill is very high, and unstable. Easy to cause uneven, vertical degree is not high. More than a few installation problems is the key to carved machine precision.
2. Check whether carved machine precision meets the process requirements? Usually test the appliance is laser interferometer or dial gauge marble flat feet, set square feet closely cooperate with the first is to detect a plane machining precision, the use of programming software in a larger rectangle, then did cut inside a circle, rectangle with carved carved machine, use a ruler measure the rectangle diagonal is consistent, if the plane of the same machine precision is no problem, otherwise the machine precision is not qualified! The second are the machining accuracy of the test machine, with the first, as do later have a look at and around the machine whether smooth, if there is a serrated edges, not smooth, the machine is the X axis precision errors, if there is a fault, the steps, then the Z axis has a precision of machine error.