Haas ST-15Y

This is a restricted use machine. You must be specifically trained before using this equipment. Review the self-directed learning information on this page and book in for in-person training with a member of technical staff.

Missing Safety Information This machine or process is currently missing safety information. Please make sure you check the risk assessments and datasheets in person - ask a member of technical staff if you are unsure.

C-axis live tool CNC lathe.
Equipment Information
Status	Unknown
Manufacturer	Haas
Model	ST-15Y
Working Area	Ø240 mm x 400 mm
Maker Space Information
Training Required	Yes
Training Information	Here

In a lathe the material of the workpiece spins and the tool remains stationary - a piece of sintered tungsten carbide is then used to peel away material where it isn't wanted. If you need to produce parts which are primarily round this is the machine you should probably be using. This particular machine has a Y axis and live tooling capability which expands the possibilities even more by allowing work to take place off the spindle axis, and perpendicular to it as well.

Actually programming the machine is relatively easy using Fusion 360. We have a number of programming templates in the works which will automate the majority of the process. The (slight) difficulty is in the form of loading the tools in a manner that allows access to all of the work area without colliding with the chuck or another part of the machine enclosure.

Training

Ask a member of technical staff about training for this machine.

Power Up and Power Down

Power Up and Power Down (Haas ST-15Y)

You must warm up the spindle bearings if the machine has not been used in the last 24 hours. This is to ensure they are properly lubricated and ready for high loads.

Usage Information

Workholding - Collets

The lathe usually has a collet chuck installed. This is an easy-to-use way to hold on to bar stock under 65mm in diameter. Check this page for how to change collets and order new sizes.

Workholding - Hydraulic 3-jaw chuck

If you wish to work with a part or stock larger than 65mm you will need to use the hydraulic three-jaw chuck. This uses three jaws to hold on to stock, and can have custom machined "soft jaws" fitted to ensure an exceptionally good fit on both raw stock and finished surfaces.

Workholding - Centres and Centre Drilling

Long work - more than 4 to 5 times their diameter - will need additional support when cutting. You can do this with with the hydraulically actuated tailstock and a live centre inserted into a specially drilled hole on the end of the bar.

Tailstock

You may need to use the tailstock to support long bars (as above, with a centre) It is a hybrid manual-hydraulic design which needs adjustment for each job.

Threading

Excellent quality threads can be made on the lathe, but it is a little involved compared to simply running a tap through a hole. This page will guide you through some of the maths requried to create excellent threads using single-point cutting tools.

Troubleshooting

A few issues crop up repeatedly. If you're having trouble with the lathe check this page to see if it's something we've come across before.

More Information

• Haas ST-15Y - Haas CNC