Of course, UG mold design, with a lot of application skills, proficiency in these skills, and giving top priority to bring you great convenience at work, especially in the parting process complex product, you can avoid detours reduce blindness.
Unfortunately, these techniques UG books which are invisible, because writing a book is not the industry people, and often see the same example repeated in different books, copy to copy, and spend a lot of space to talk about some practical things rarely used, but did not really need.
So, let's talk about UG in the practical application of skills, mainly the book does not have, I hope you can understand the meaning carefully, in order to be applied flexibly. Of course, before we look at these things, you should have a basic knowledge of UG modeling.
First, the Boolean operations to fail:
In UG operation, often encounter Boolean operations not on, not afford to cut, and cut, split and other issues fail. Especially in the face of relatively bad situation, parting, take slide, the lifter often encounter this problem, try the following methods:
1. The surface of the tool body offset or moving a little distance to solve. (Distance to offset or move does not affect the precision machining)
2. wireframe display the target body, the tool body, do Boolean operations (cut or split) if fails, look closely, you will find side edge portion is displayed in red, this is the problem area, problem areas can be separated (ie, divided into two parts), and then make a Boolean operation, and then extract the region face problems, stitching, processing, and then patch up, this method can solve most of the Boolean operations to fail. (Can also be a little bias to solve the problem of surface)
3. Sometimes, Boolean operation fails, all made surface, operating surface and then stitched into a solid. In this way, it is able to meet almost all of the addition and subtraction to fail, but also the most troublesome, when it did not move the only recommended.
4. Entity suture way to add two objects, first select the common face, adjust the tolerance to sew. But in this way will cause trouble for the subsequent operation.
Note:
a. If the Boolean operators produce more individuals will lose parameter, which is the reason for the implementation of a MW / moldtools the Split_Solid failure.
b. body cut sheet entities, entities in the region, sheet body can not have "border" or "face selfing" problem, which can be used Analysis / ExamineGeometry Lane Face_FaceIntersections and Sheet_Boundaries option to check out.
c. Boolean operations can not have a "zero thickness" phenomenon.
d. Boolean operation, you can "face - face, face ...... - entity." Both options complement the parting surface is very convenient.
Two .UG trim broken surface
1. Analysis / ExamineGeometry Lane Face_FaceIntersections and Sheet_Boundaries options, determine the number of boundaries, as well as the specific location of the hole breaking, or location selfing surface. Then respectively wireframe display, analysis boundary line.
the measures taken:
A. surface area reduction: extracting broken hole surrounding surface, which strip out the parameters, and then use Boolean operations, surface area reduction a way that will break the surface around the hole to remove, and then extracted face stitched up (if necessary, the suture tolerance minor adjustments), it may also be drawn to expand the surface, or trim, and then sutured. If the Boolean operation fails, it can break the surface around the hole do extraction, then Boolean operations. After Copy has drawn face, broken surface treatment. Then sutured.
B. cutting sheet drawn broken body surface or peripheral surface for backup. With TrimmedSheet (trimmed piece body) option, cut the original geometry of the surrounding surfaces or broken surface. Surface and then backed up by editing process, then resume stitching up one by one. If the surface is broken holes, the available "free surface feature" in the option to manually do i piece body, fill up. If you still have to trim broken suture holes can be sewn large tolerances little tune, to be made real, with "replace" or "binding surface" and so on. (Trimming entities sometimes a lot easier than platelets)
C. The broken surface modified to another color, the color of the rest of the face made consistent. Then MW / moldtool / ExtractFaceRegion option to extract the same color surface, open 29 floors, you can see there is no desire to remove the surface, so it is easy to repair.
D. Sometimes, by the turn of the IGS other software, surface, has been severely deformed, available contour, hand movements face. If the contour line is disconnected, these can be cut at the reprocessing.
E. If a lot of broken surface, may all be drawn into one of the bulk surface, then one by one suture, to find the problem.
F. There are many other 3D software from the turn of the STP map, analyze it as an entity, but a closer look, there are holes, which is a geometrical problem. Then can be extracted one by one monolithic body, then one by one suture to resolve. Can also be based on the contour line, after his own face in hands, do Patch.
G.UG open other software output IGS drawing, the effect is not very good, have sheet body deformation in many cases, can be opened with SolidWorks software, then save as x_t format, input UG, this time can be found, graphics quality greatly improved.
H. Sometimes the suture may be appropriate to increase the tolerance of the human body sewn into a solid sheet, and then in the entity to modify, so that will be a lot easier. Remember, if the body is not easy to modify the sheet can be made entity, if the entity is not easy to modify, platelets can be made.
