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The application of reference ball in three-dimensional detection mold

Automobile mold, to ensure qualified tolerance of line position and size tolerance,  To produce qualified auto parts.  Many powerful mold manufacturers, the introduction of three-dimensional testing equipment, mold parts detection.  However, in order to check the mold parts reasonably and accurately, there must be a reasonable and correct test benchmark.  For automobile mold, only rely on the blank as a benchmark, can not meet the testing requirements.  It is necessary to install the tool ball on the core or cavity as a test benchmark.  To achieve the accuracy of test results.  

Meanwhile, tooling balls are widely applied to CNC, EDM production. There are different raw materials, hot treatment process and surface treatment of tooling balls, generally tooling ball would be used with tooling ball aluminum covers and tooling ball plate, block. 

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Standard Metric Tooling Balls Sizes, we also can make custom in sizes, such as inch tooling balls sizes custom ,non standard precision tooling balls sizes custom.

1. Installation of tool reference balls on mold die parts

To achieve the correct installation of the tool reference ball on the mold part, a groove of 45X20X1mm is first machined on the non-forming surface of the mold part.  Machining a ￠6H7 positioning hole on one side of the groove, the hole depth is 2-3mm deeper than the tool reference ball positioning column.   The coordinate value of the tool reference ball center relative to the design reference value of the mold part is engraved in the groove.

2. Application of tool reference ball in CNC machining

The picture below is a part of a car lamp mold.  The part is a special-shaped part, there is no reference number around, only at the bottom of the part calibration position.  The CNC processing order of the parts is: 1, first roughing the front forming surface and finishing tool of the installation groove and installation hole of the reference ball, 2, and then the reverse rough, finishing around the bevel, 3, finally finishing the front.  When machining the front, the center of the tool reference ball is used as the machining reference of the part.  After modifying the parts, use the tool reference ball as the reference.  If you do not use a tool reference ball, like this part, it is difficult to find alignment.

3. Application of tool reference ball in EDM processing 

The following figure is the core of a car lamp mold.  The core needs EDM processing in many places.  The part is an irregular part.  In processing, we use the tool reference ball as the processing reference of the parts, which is easier to find and take the number.  It is difficult to process EDM without using a tool reference ball.