diff --git a/a1_swap_mod_packer/planning.py b/a1_swap_mod_packer/planning.py
index 883d988..4e13fab 100644
--- a/a1_swap_mod_packer/planning.py
+++ b/a1_swap_mod_packer/planning.py
@@ -16,7 +16,7 @@ from .metadata import read_3mf_summary
 from .models import PlateJob, ThreeMfSummary
 
 # 默认输出文件名模板，{plates} 为总盘数，{sources} 为来源标识
-DEFAULT_OUTPUT_PATTERN = "{plates} Plates - {sources}.3mf"
+DEFAULT_OUTPUT_PATTERN = "{plates}-Plates-{sources}.3mf"
 
 # 摘要解析器类型别名，接受 Path 返回 ThreeMfSummary
 SummaryResolver = Callable[[Path], ThreeMfSummary]