Aug.2023 16
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What's the difference between JG and PG

jc-tooling will tell you the differences between JG (Jig Grinding) and PG (Profile Grinding) processing methods, particularly in the context of precision machining for molds and similar applications. I'll summarize the key points as below

  1. Principle:

    • JG (Jig Grinding) Processing: Utilizes a large planetary internal thread grinding method, where grinding wheels act as CNC-controlled tools to grind the workpiece.
    • PG (Profile Grinding) Processing: Involves projecting the product workpiece onto a display at 20 to 50 times its actual size using an electronic optical projector. Precision machining is then performed based on this projection.
  2. Processing Targets:

    • JG Processing: Focuses on internal and external round holes, finished holes, round holes, and shaped holes, achieving an accuracy of ± 0.002 mm.
    • PG Processing: Primarily used for cutting dies with complex shapes, punch needles, lower dies in blocks, and stripping plates. It achieves a processing accuracy of ± 0.00 mm.
  3. Grinding Wheel Differences:

    • JG Processing: Uses grinding rods for hole edge and surface design grinding, achieving high smoothness and precision.
    • PG Processing: Employs knife-type grinding wheels, similar to a knife, allowing for the processing of small R angles and tube grooves.

In summary, while JG and PG processing methods may appear similar due to their common usage in precision machining, they have distinct differences in terms of principles, processing targets, and the types of grinding wheels used. Choosing between these methods depends on the specific requirements of the parts being processed.

If individuals are unclear about which method to use for their parts, they are encouraged to learn more from JC-TOOLING, where these concepts and methods are discussed in depth. This helps individuals make informed decisions about the appropriate precision processing methods for their specific needs.