Consistency in tolerancing methods is every bit as important as consistency in dimensioning. Seeing tolerances specified the same way among all drawings will make it easier for the operator to interpret blueprints.
A qualified setup is one that can be accurately repeated over and over again. When it comes to machining centers, a qualified setup can ensure that the workpiece location (and, specifically, the program zero point location) will be in exactly the same place every time the setup is made.
Value-added principles are quite simple and can be applied to all forms of manufacturing. Though this may be oversimplifying to some extent, there are only three basic task types in value-added terms.
Non-production time is any time your CNC machines are scheduled not to be running. Non-production time for each shift includes breaks and lunch (if your machines cannot run unattended).
Though this discussion is quite basic, many of the attendees in my CNC seminars are so surprised at this presentation, I assume that many people have not considered the implications of this question.
Almost all current model slant bed turning centers allow machinists to use either right- or left-hand tooling.
Tool life management systems have come a long way in the past few years. The best systems can handle just about any tool life problems you can think of.
completely, it must be replaced. Any tasks related to replacing tools (including tool tear-down, insert replacement, new tool measurement, offset entry and tool replacement in the machine) are tasks performed for tool maintenance purposes.
For companies that have long production runs on their turning centers, tool maintenance (changing inserts and replacing dull tools) must be performed several times during the production run. And during a given tool's life, it is likely that tool wear will cause workpiece attributes to vary, requiring offset changes to be made at several points during the tool's life.
Though the thrust of this presentation is to teach you CNC usage, it helps to understand why these sophisticated machines are so important. Here are but a few of the more important benefits offered by CNC equipment.