CNC Lathe Bijay ENGG Balgaon 2
Introduction
Plant Address :- MIDC, Belgaon.
Sector :- Automobile Comp.Manufatcur.
Products :- Automobile Parts
Machine :- STC-200
Before
After
Challenges
1. Problem
- The machines have been in operation for over 25 years, resulting in significant wear and tear.
- Geometrical accuracies are compromised, leading to frequent errors in production.
- High job rejection rates due to quality issues.
- Machine breakdown frequency has increased to 20%.
- Electrical controllers and drives are outdated, making repairs difficult due to limited support availability.
- CNC Controller was very old, service support is major concerns.
2. Significance
- Addressing these challenges is critical to ensuring consistent production quality, operational efficiency, and customer satisfaction.
3. Impact
- Reduced production capacity.
- Quality control issues, resulting in frequent product rejections.
- Heavy reliance on skilled operators; machine downtime increases when operators are unavailable.
- Prolonged machine breakdowns affecting delivery schedules.
- Clients are hesitant to provide additional machining assignments due to reliability concerns.
- High rejection rates contribute to significant losses in profitability.
Vendor Selection Criteria
- Expertise in Retrofitting Complex Machines: Proven experience in handling retrofitting projects of similar complexity.
- Industry Experience: A minimum of 20 years of experience in the same field.
- Client Feedback: Positive reviews and recommendations from existing clients.
- Multidisciplinary Expertise: Adequate experience in operations, electronics, and mechanical systems, specifically for reconditioning and retrofitting complex machinery.
- Infrastructure: Adequate facilities and resources to handle the scope of work effectively.
- Cost-Effectiveness: Competitive and economical solutions without compromising quality.
- Service Support: Reliable after-sales support and service capabilities.
- Quality of Workmanship: Demonstrated ability to deliver high-quality work.
- Ethical Business Practices: Transparency and fairness in all business dealings.
- Commitment to Timely Delivery: A strong track record of meeting deadlines and maintaining project timelines.
Approach to Work
- Receiving and Initial Assessment:
Upon receiving the machine at our facility, we begin by dismantling all its components, including slides, ball screws, turret, spindle, guards, and other critical parts. - Thorough Cleaning:
All dismantled parts undergo a comprehensive cleaning process to ensure they are free from debris and contaminants. - Inspection and Status Reporting:
Following the cleaning, our expert team conducts a detailed inspection of the machine components, jointly with the client’s representative. A detailed report is then prepared, outlining the current condition of each part. - Recommendations and Client Approval:
The inspection report, along with our professional recommendations, is shared with the client for review. - Work Commencement:
Upon receiving client approval, we proceed with the necessary reconditioning, retrofitting, or repairs as outlined in the approved report.
Our Solutions to Address the Problem
- Restoration of Geometrical Accuracies: Performed precision grinding on X and Z slides to restore alignment and accuracy.
- Replacement of Key Components: Replaced X and Z axis ball screws and bearings with new, high-quality units.
- Spindle and Tailstock Overhaul: Installed new bearings for the spindle and tailstock to enhance performance.
- System Servicing: Conducted comprehensive servicing of the turret, hydraulic power pack, and coolant system.
- CNC Retrofitting: Retrofitted the machine with the latest Siemens 808D CNC system, including new drives and motors.
- Electrical Overhaul: Completed rewiring of the machine and control panel with modern, reliable wiring.
- Machine Repainting: Repainted the machine using durable PU paint for a refreshed appearance and protection.
- Geometrical Accuracy Verification: Verified all geometrical accuracies against the machine tool builder’s standards.
- Successful Job Trials: Conducted and validated job trials to ensure optimal machine performance.
- On-Site Commissioning: Installed and commissioned the machine at the client’s facility.
- Handover of Documentation: Provided the client with spare parts and both hard and soft copies of electrical documentation.
End Results
- Restored Accuracy: The machine achieved precision comparable to that of a new machine.
- Enhanced Productivity: Productivity levels doubled, significantly improving operational efficiency.
- Reduced Rejection Rates: Job rejection issues were minimized to nearly zero.
- Customer Satisfaction: The client expressed high levels of satisfaction with the results.
- Business Growth: Increased productivity contributed to higher profitability for the company.
