Toramach PCNC 770 CNC Mill

Tormach PCNC 770 CNC Mill (Metal Shop)

The Tormach PCNC 770 is the metal shop’s precision CNC milling center, designed for high‑accuracy machining in aluminum, steel, brass, and machinable plastics. It is ideal for prototyping, small‑batch production, and complex geometry that cannot be produced on manual machines.

Members must complete Metal Shop Orientation and CNC Training before using this machine.

1. Equipment Overview

Tormach PCNC 770

A compact, high‑precision CNC mill with a rigid frame, high‑speed spindle, and full PathPilot control system.

Capabilities

• 2.5D and full 3D CNC machining

• Precision pocketing, contouring, drilling, and tapping

• Aluminum and steel part fabrication

• Engraving and surface machining

• Repeatable production of complex parts

• CAM‑driven workflows (Fusion 360, SolidWorks CAM, etc.)

General Features

• High‑speed spindle (10,000+ RPM depending on configuration)

• R8 spindle taper

• PathPilot CNC controller

• Digital jog controls

• Tool length offsets and work coordinate systems

• Flood coolant or mist coolant (depending on shop setup)

• Rigid cast‑iron frame

• Stepper or servo axes depending on configuration

2. Operator Controls

DRC 500 Digital Remote Control (Pendant)

A rugged handheld pendant used for:

• Jogging X/Y/Z axes

• Selecting jog step size (coarse/fine)

• Feed hold / cycle start

• Spindle on/off

• Precise manual positioning

• Safe tool changes

• Touch‑off and edge‑finding

The DRC 500 allows controlled movement without touching the keyboard or screen, reducing risk during setup.

Keyboard

The keyboard is part of the PathPilot control system and is used for:

• G‑code editing

• File management

• Manual Data Input (MDI)

• Setting offsets (G54, G55, etc.)

• Renaming tools, programs, and directories

• Navigating menus quickly

PathPilot is keyboard‑centric, so having a physical keyboard is essential for efficient workflow.

Disc‑Shaped Jog Controller (Shuttle Wheel / Jog Dial)

This controller provides:

• Smooth manual jogging

• Fine incremental movement for touch‑off

• Scroll and navigation functions in PathPilot

• Precise approach moves during setup

It is especially useful when zeroing tools or aligning workpieces.

3. Safety Rules

Personal Safety

• Safety glasses required at all times.

• Keep hands clear of spindle, tooling, and moving axes.

• No gloves while operating — gloves can catch on rotating tools.

• Tie back long hair and avoid loose clothing.

• Never reach into the machine while it is running.

Machine Safety

• Verify toolpaths in simulation before running.

• Use proper workholding — vise, clamps, or fixtures.

• Ensure tools are tightened securely in the spindle.

• Confirm correct tool length offsets.

• Set work coordinate system (G54, G55, etc.) properly.

• Keep coolant lines aimed correctly.

• Never run the machine unattended.

• Stop immediately if chatter, vibration, or unexpected motion occurs.

Material Restrictions

Approved:

• Aluminum

• Steel

• Stainless steel

• Brass

• Copper

• Machinable plastics (Delrin, HDPE, nylon)

Not approved:

• Hardened steel

• Cast iron without proper tooling

• Glass or stone

• Wood (use woodshop tools instead)

4. Setup & Operation Workflow

1. CAM Preparation

• Create toolpaths in Fusion 360 or other CAM software.

• Select correct tools and feeds/speeds for material.

• Post‑process using Tormach PathPilot post.

• Verify toolpath in simulation.

2. Machine Preparation

• Power on machine and PathPilot controller.

• Home all axes.

• Load G‑code program.

• Install tools in spindle or tool holders.

• Set tool length offsets (TLO).

• Set work coordinate system (WCS).

3. Workholding

• Use the CNC vise for most operations.

• Use parallels to elevate work.

• Use clamps or fixtures for irregular shapes.

• Ensure the workpiece cannot shift under cutting load.

4. Running the Job

• Dry‑run above the part to check motion.

• Verify coolant flow.

• Start spindle and coolant.

• Run program with hand on the feed‑hold button.

• Monitor for chatter, rubbing, or tool deflection.

• Pause if adjustments are needed.

5. Cleanup

• Remove chips using brush or vacuum.

• Wipe down machine surfaces.

• Clean vise and table.

• Return tools to storage.

• Leave the machine ready for the next member.

5. Accessories & Storage

CNC Tooling Cabinet

Contains:

• End mills (carbide and HSS)

• Drill bits

• Chamfer mills

• Engraving tools

• Collets and holders

• Parallels

• Clamps and step blocks

• Coolant supplies

• Touch‑off tools

• Edge finders

Members must return all tooling to its proper drawer.

Digital Tools

• USB drives for G‑code transfer

• Dial indicators

• Calipers

• Micrometers

• Layout dye

• Deburring tools

6. Respecting Shared Equipment

• Do not modify machine parameters or PathPilot settings.

• Do not leave tools in the spindle.

• Report dull or damaged cutters.

• Keep the machine clean and free of chips.

• Never run unverified G‑code.

• Treat the CNC as a precision instrument — misuse can cause expensive damage.