Swing motion for manufacturing non-generated bevel gears with end relief
View Patent ↗A motion which creates an end relief and which is integrated into the plunging cycle of non-generated bevel gears. The tool, after feeding to the correct tooth forming position in case of non-generated gears, is swung sideways out of cutting or grinding contact with the slot instead of along a withdraw path which is identical to the plunge path but opposite in direction.
1. A method of machining a bevel gear workpiece with a tool to form a plurality of tooth surfaces on said workpiece with each of said tooth surfaces having a predetermined length, said method comprising:
engaging said workpiece and said tool,
feeding said tool relative to said workpiece to a predetermined depth in said workpiece thereby forming a tooth slot and defining adjacent tooth surfaces,
moving said tool relative to said workpiece whereby an end relief section is formed by said tool at one end of at least one of said adjacent tooth surfaces, said moving of said tool being an angular swing motion (φ) defined by pivoting said tool about a swing pivot axis, said swing pivot axis being located dependent upon the length (Δl) and depth (Δh) of said end relief section,
wherein said moving additionally includes a rotation of said workpiece about a work rotation phase angle,
withdrawing said tool from the tooth slot.
2. The method of claim 1 wherein said moving and said withdrawing are performed substantially simultaneously with one another.
3. The method of claim 1 wherein said method is defined in terms of non-generating V-H basic settings.
4. The method of claim 1 wherein said moving is defined in terms of generating basic settings with said generating basic settings being converted to non-generating V-H basic settings.
5. The method of claim 1 wherein said tool is a cutting tool.
6. The method of claim 1 wherein said tool is a grinding tool.
7. The method of claim 1 wherein said machining is face milling.
8. The method of claim 1 wherein said machining is face hobbing.
9. The method of claim 1 further comprising chamfering and/or deburring of said workpiece with said tool during said moving along said angular swing motion.