Solving CZ Purlin Machine Punching Position Inaccuracy for a 10+ Year Qatar Client

Case Study: Solving CZ Purlin Machine Punching Position Inaccuracy for a 10+ Year Qatar Client

—— A Real Remote Troubleshooting Case by Star Form Machinery

l  Introduction

At Star Form, we believe that a machine is only as good as the support behind it. Recently, one of our long-term clients — a loyal partner who has been using our CZ purlin machine for over 10 years — encountered an issue with punching position accuracy.

Their CZ purlin machine was producing inconsistent results, and they reached out to our technical support team for help. Instead of immediately dispatching an engineer, we guided them through a step-by-step remote diagnostic process.

The result? The issue was resolved within hours — without any spare parts replacement, without downtime, and without service fees.

Here’s exactly how we helped them identify and fix the problem, step by step.

l  Problem Description

The client reported that their CZ purlin roll forming machine had been running continuously for more than a decade, producing high-quality purlins for various construction projects.

However, they recently noticed a quality issue:

The punching positions on the purlins were inaccurate.
Only Punch 3 was out of position, while the other punching stations (Punch 1 and Punch 2) were working correctly.

This was a critical issue because inaccurate punching affects the assembly of purlins on construction sites, potentially causing installation failures.

l  Remote Troubleshooting Steps We Provided

We asked the client to perform the following diagnostic steps, which we guided them through via video call:

Step 1: Check the Final Product Length and Punching Distance

Action:
Measure the overall length of the finished purlin and the distance between each punching hole.

Finding:
The client confirmed that the overall product length was correct, and the punching distances for Punch 1 and Punch 2 were accurate.
However, the punching position for Punch 3 was consistently off.

This confirmed that the CZ purlin machine was mechanically capable, and the issue was likely related to the control system — specifically, the Mitsubishi PLC.

Step 2: Verify Data Changes in the Mitsubishi PLC

Action:
Check the real-time data changes within the Mitsubishi PLC system while the CZ purlin roll forming machine was running a test cycle.

Finding:
The client observed that the PLC data for Punch 1 and Punch 2 were stable and correct. However, the data for Punch 3 showed irregular deviation during each punching cycle.

This indicated that the PLC was receiving the correct signals for the first two punches but was sending incorrect positioning commands for the third punch.

Step 3: Check the Correction Parameters in the Mitsubishi PLC

Action:
We asked the client to review the correction parameters stored in the Mitsubishi PLC system.

Finding:
After checking the parameter table, the client discovered that the correction value for Punch 3 had been accidentally changed — likely due to an operator error during previous machine adjustments.

The parameter deviation was small but significant enough to affect the punching accuracy of the CZ purlin machine.

l  The Solution: Adjusting the Correction Parameters

We guided the client to reset the correction parameter for Punch 3 to the correct value as per the original machine setup.

After saving the changes, we asked the client to run a test production batch.

l  Client Feedback: Happy Customer, Normal Production

The client reported that after adjusting the parameter, the CZ purlin machine returned to normal operation immediately.

In their own words:

“Star Form’s remote support helped us fix the punching issue in one hour. Saved us time and overseas service costs. Much appreciated!”

l  Why This Case Matters to CZ Purlin Machine Users

This case highlights an important lesson for all CZ purlin roll forming machine operators:

l  How Star Form Supports Your CZ Purlin Machine

At Star Form Machinery, we don’t just manufacture CZ purlin roll forming machines — we also provide lifelong after-sales support to ensure your production line keeps running smoothly.

Our remote diagnosis service helps you:

✔ Identify problems quickly without waiting for an engineer to travel

✔ Avoid unnecessary spare parts replacement costs

✔ Minimize production downtime

✔ Extend the service life of your CZ purlin machine

We understand that time is money on the factory floor. That’s why we always offer fast, practical solutions — even for machines that have been in service for over 10 years.

l  Final Thoughts

This case proves that not every problem requires a spare part. Sometimes, the solution lies in the settings, not the hardware.

If you are experiencing similar issues with your CZ purlin roll forming machine, contact Star Form Machinery. We’ll help you diagnose the problem — quickly, remotely, and without unnecessary costs.

l  Frequently Asked Questions

1. Why is only one punching station off on my CZ purlin machine?
This usually indicates a correction parameter error in the PLC for that specific punching unit. Check the parameters for each individual punching station.

2. How do I prevent parameter errors on my CZ purlin roll forming machine?
We recommend saving a backup copy of your PLC parameters and limiting access to parameter adjustments to trained personnel only.

3. Can Star Form help me remotely with my CZ purlin machine issues?
Yes. We provide remote support for most control system issues. If hardware replacement is needed, we’ll advise you accordingly.

Need help with your CZ purlin roll forming machine?
Contact Star Form Machinery today for professional technical support and reliable after-sales service.