CNC milling center 1165 is a professional terminology for tool path technology. I believe everyone is interested in the obscure and difficult to understand terminology of machining center. Today I will tell you more interesting knife path knowledge, let's take a look.
Thick tool path selection:
Surface grooving
The key is the choice of scope and the choice of surface.
The area of tool path processing is: the selected surface in the selected range is the end surface, and all the places where the tool can go from the highest point to the lowest point are the principle. The selected surface is best to be the entire surface, and the boundary can only be the area to be processed. The area where there is no surface extends less than half of the tool diameter. Because the other surfaces have enough margin, they are automatically protected; it is best to extend the lowest line, because There is an R gong at the lowest point.
Knife choice:
If the tool cannot enter in a spiral or oblique line, or the area that cannot be processed, the area that cannot enter the knife is sealed, and it is left for the second roughing.
Before the light knife, be sure to make all the areas that are not thick, especially the small corners, including two-dimensional corners, three-dimensional corners and sealed areas, otherwise the knife will be broken.
Secondary roughing: generally use three-dimensional grooving to select the range, flat-bottomed knife, and use flat grooving and contour toolpaths. Under the condition of not hurting other surfaces, the tool center to the selected boundary is generally not refined. The rapid two-way angle depends on the situation. The spiral feed, the angle is 1.5 degrees, and the height is 1. When the groove shape is strip, it cannot Spiral cutting is used to feed in a diagonal line. Generally, the filter is opened, especially when the curved surface is thick.
Retraction: Generally, relative retraction is not required, but absolute retraction is used. When there is no island, relative retraction is used.
Plane trenching:
Milling various planes, concave flat grooves, when milling a part of an open plane, you need to define the boundary, in principle, it can feed (more than one tool diameter), and the outside of the opening is larger than half of the tool diameter, and the periphery is closed.
shape:
When the selected plane is suitable for the shape layering, use the shape layered knife lift (planar shape). When the knife lift point and the knife point are at one point, the knife does not need to be lifted. The z plane generally lifts the knife, try not to use the relative height; the compensation direction is general Right compensation (shun knife).
Tool path settings for mechanical compensation:
The correction number is 21, the computer correction is changed to the mechanical correction, the feed is vertical, and the place where the tool cannot pass is changed to a larger R without leaving a margin.
It is suitable for the closed face. If the open face has four circles, the top face should be sealed. If it is within four circles or not four circles, the range and height should be selected (a certain arc is used for thickening). Circumstances: The machining distance in any plane is less than one tool diameter, if it is greater than one tool diameter, a larger tool or two contours of equal height should be used.
Surface streamline:
With the best uniformity and crispness, it is suitable for the light knife and can replace the contour shape in many cases.
Suitable for situations with large holes in the middle (less use). Matters needing attention: Bouncing the knife, the knife is not sharp, the knife is too long, and the workpiece is too deep to walk around and not go up and down; the sharp corners of the workpiece should be divided into two tool paths, not over, the edge is best when the knife is light. Extend (use the arc to advance and retreat the tool).
