u/praveenpravianbu

I’m very new to CNC, and at work I recently had to work with a 5-axis DVF 5000. I’ve learned the basics and started doing some trial machining.

I recently tried 3+2 machining. I machined one side with a 90° tilt, and then, using the same 90° tilt, rotated the part 180° to machine the opposite side.

However, when the two machined halves meet, I noticed a shift/mismatch at the joining area. The two surfaces are supposed to meet perfectly and form a flat, continuous surface, but there is a noticeable step between them.

I’m trying to understand where this error could be coming from.

Could it be related to:

• WCS/work offset setup?
• Rotary axis centerline or machine calibration?
• Fixture/workholding alignment?
• Tool length or tool offset?
• Incorrect rotary transformation/orientation in CAM?
• Backlash or positioning accuracy?
• Something else in the 3+2 setup?

I’d really appreciate some guidance from experienced 5-axis/DVF 5000 users on how you would troubleshoot this systematically.

Thanks!

I’m very new to CNC, and at work I recently had to work with a 5-axis **DVF 5000**. I’ve learned the basics and started doing some trial machining.

I recently tried **3+2 machining**. I machined one side with a **90° tilt**, and then, using the same 90° tilt, rotated the part **180°** to machine the opposite side.

However, when the two machined halves meet, I noticed a **shift/mismatch at the joining area**. The two surfaces are supposed to meet perfectly and form a flat, continuous surface, but there is a noticeable step between them.

I’m trying to understand where this error could be coming from.

Could it be related to:

* WCS/work offset setup? * Rotary axis centerline or machine calibration? * Fixture/workholding alignment? * Tool length or tool offset? * Incorrect rotary transformation/orientation in CAM? * Backlash or positioning accuracy? * Something else in the 3+2 setup?

I’d really appreciate some guidance from experienced 5-axis/DVF 5000 users on how you would troubleshoot this systematically.

Thanks!