A CNC lathe is a machine tool designed to remove material from a rotating work piece, using a cutting tool. Some lathes can form hollow parts by a process called metal spinning. These parts have circular cross-sections. Metal and other materials can be turned on a lathe, including wood and plastics. CNC controlled lathes use a computer to control the process of making each part with repeated accuracy and precision.
Application Challenges
- Precise speed regulation and torque over wide speed range
- Interlock drive with operation of CNC.
- Quick acceleration even under high torque conditions
Applicable Products
| Drives Products | Features | Benefits |
| High inertia variable frequency control – 60 to 180 Hz | With the drive's ability to operate above motor base speed, between 60Hz and 180Hz, belt or gear drives are no longer needed when working with large or small diameter cutters. |
| Precise speed regulation over wide speed range | The drive is capable of running the application across a wide range of speeds, from a slow heavy cutting to a fast lightweight cutting. |
Field Weakening Control and
Energy Saving Control | Both the Field Weakening Control and the Energy Saving Control Function can greatly increase motor precision when working with lighter materials. |
| BCD/Binary Digital Input | An interlock with a computer numerical control (CNC) is possible by using a binary or BCD digital option card. |
| Frequency Detection | The drive is capable of using Frequency Detection to achieve complete interlock with the CNC. |
| Overtorque Detection | A worn cutting tool can be detected immediately with Overtorque Detection. |
| Stall Prevention During Accel | Quick acceleration is possible by using the Intelligent Stall Prevention during acceleration function. |
| Spindle Products | Features | Benefits |
| Regenerative Energy | 100% duty Back-to-Line as standard |
| Orientation for tool change | Encoder/Magnetic pick up type orientation |
| Solid tap Capability | M5 can solid tap faster while maintaining accuracy |
| Speed regulation | M5 has tighter speed regulation while cutting constant load. |
Application Details
A metal lathe usually spins the work piece along a horizontal axis. A mandrel or chuck is mounted to the headstock of the lathe. A follower block or tail block is mounted to the tailstock. A blank piece is clamped to the lathe and pressure is applied to the blank via a cutting tool. Material is cut away on each pass across the blank. After each pass, the lever arm is moved closer to the final position. Eventually, when the proper amount of material has been removed, the part is completed.
Yaskawa AC drives can be interlocked with the CNC control systems so the operation of the CNC controller and the AC drive are synchronized.
In addition, the Energy Saving Mode in Yaskawa AC drives automatically detect changes to the amount of torque required during shaping and finishing phases. This feedback enables the drive to quickly detect changes as the cutting tool becomes dull.
Additional Information
The pdf contains the same information as the web, but in some cases may contain more and should be used if a printed version is required.
|
|