INVT Solution for Automatic Internal Threading Machine in India

Abstract: Threading machine is one of the most important applications in a CNC machine center. It is a subtractive method used in making external and internal threads of different sizes. This paper mainly introduces INVT PLC, Servo, and HMI used in this machine with high performance.

Keywords: INVT IVC3 PLC, DA200 Servo set, VS series HMI, Automatic Internal Threading Machine

I. Introduction

This machining occurs through the circular movement of a rotating tool calibrated with the required thread depth and density. The primary function of a thread is to act as a coupling agent between two mechanisms. During the coupling process, motion between parts occurs.

Machine Procedure:

1. Spindle Servo: Spins the threading tool so it threads into the bolt or other parts.

2. Up-down Servo: Moves the spindle up and down to reach the required thread length on the bolt.

3. Tool Replacement Servo: Changes the completed tool with a new one through servo-controlled mechanical movement.

4. PLC & HMI: Controls, monitors, and transmits data from HMI to servo drive for movements.

II. Project Information and Solution

1. Project Information
 Site information: Nut bolt threading manufacturing company

2. INVT Solution
In this application, internal threading is performed automatically using servo movements. Each machine includes 3 DA200 Servo sets, 1 IVC3 PLC, and 1 QE HMI. A total of six machines were deployed.

3. System Features:
 A) All settings can be changed through the HMI – very convenient operation.
 B) Cost-effective components ensure high return on investment.

III. System Commissioning
   Control panels were tested and configured as part of the commissioning process.

IV. Advantages and Benefits
 • High production efficiency due to automatic operation.
 • Data can be easily input and monitored through the HMI screen.
 • Easy fault detection.
 • High accuracy threading with servo drives.

V. Conclusion
 INVT offers a cost-effective and reliable solution, successfully operating in India with customer satisfaction.