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How to Achieve Perfect Parallelism on Mold Inserts
In precision mold manufacturing, it’s very critical to achieve perfect perfect parallelism on mold inserts. Even a minor deviation in mold insert parallelism can lead to uneven wear, flashing, unstable part quality, and reduced tool life. To be fair, parallelism and dimensional accuracy are equally important.
Therefore, we will explain how to achieve parallelism on mold inserts through proper process selection, with a focus on PG grinding for mold inserts in this article.
Why Parallelism on Mold Inserts Is Critical
Based on the past experience, many mold failures not only because dimensions are out of tolerance, but also because parallelism control in mold manufacturing was overlooked.
Common Causes of Mold Insert Parallelism Errors
Before selecting the machining process, let’s understand the root causes of insert parallelism first
Material Stress in Precision Mold Inserts
Incorrect Datum Strategy
Process Limitations
Why We Choose PG Grinding for Mold Insert Parallelism
PG grinding for mold inserts is a popular choice when tight parallelism is needed.
Advantages of profile grinding mold components:
With proper setup, PG grinding can consistently achieve parallelism within ±0.001–0.002 mm. It is ideal for high precision grinding services.
Steps to Achieve Perfect Parallelism on Mold Inserts
1
Material PreparationConfirm stress-relieved heat treatment
Leave uniform grinding allowance
2
Datum EstablishmentGrind one reference surface first
Use the same datum throughout all PG grinding operations
3
Controlled PG Grinding ProcessRough grinding for shape accuracy
Semi-finishing to release residual stress
Final light finishing pass to lock in parallelism
4
Temperature ControlMaintain stable coolant temperature
Avoid excessive heat buildup during grinding
Inspection and Parallelism Verification
PG Grinding vs WEDM for Mold Insert Parallelism
| Process | Parallelism Capability | Typical Application |
| PG Grinding | ±0.001–0.002 mm | High-precision mold inserts |
| WEDM | ±0.003–0.005 mm | Complex profiles |
| CNC Milling | Limited | Pre-machining only |
When comparing PG grinding vs WEDM for mold inserts, PG grinding offers superior parallelism and surface stability for critical components.
Conclusion
Therefore, to achieving perfect parallelism on mold inserts, only accurate machines is far from enough. It also requires the right process, correct datum strategy, and experienced execution. Among numerous options, PG grinding remains the most reliable solution for precision mold inserts made from hardened tool steel
Professional precision grinding services can help reduce manufacturing risk, improves mold performance and extends tool life.
Choosing professional precision grinding services significantly reduces manufacturing risk, improves mold performance, and extends tool life. If you need PG Grinding Insert or punches, please feel free to contact Hepha Precision.
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