Category:Milling Machines: Difference between revisions
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[[Category:Tools]][[Category:Metal]] | [[Category:Tools]][[Category:Metal]] | ||
{{ToolBox | |||
|tool_title = Vertical Milling Machines | |||
|tool_subtitle = Milling Machines | |||
|image = asylum_milling_machines.jpg | |||
|caption = Milling machines in the Asylum Machine Shop | |||
|make = various | |||
|model = | |||
|serial = | |||
|manufacturer_specs = | |||
|manual = | |||
|location = Machine Shop | |||
|rubric = | |||
|training = | |||
|testing = | |||
|restrictions = red | |||
|tool_categories = | |||
}} | |||
==Description== | |||
On a milling machine, parts are created by removing material from a solid block (or workpiece) using a variety of spinning cutting tools. | |||
A 3-axis vertical milling machine has a variable-speed vertical spindle and a heavy table that translates underneath it. A metal workpiece is clamped to the table and a cutting tool is held in the spindle. Cutting is done by moving the workpiece against the spinning tool, or by lowering the spinning tool into the workpiece. | |||
A CNC milling machine operates by computer control. Motors are attached to the movement mechanics allowing the computer to make precision-machined parts automatically. | |||
{| class="wikitable" | |||
!| Use For | |||
!| Do Not Use For | |||
|- | |||
| | |||
* Metals | |||
* Mild steel, Alloy steel, Stainless steel | |||
* Aluminum, Brass, Copper Alloys | |||
* Titanium | |||
* Plastics such at PMMA and polypropylene | |||
| | |||
* Wood | |||
* Graphite | |||
* Fiber Composites | |||
* Any materials with abrasive additives. | |||
* Flammable or toxic materials | |||
|} | |||
=Safety Notes= | |||
{{EyeWarning}} | |||
==Personal== | |||
* '''Wear safety goggles.''' Eyeglasses are NOT safety goggles. | |||
{| class="infobox" cellspacing="0" style="width: 2em; text-align: left; font-size: 125%; line-height: 1.5em;" | |||
! colspan="2" class="infobox-image" | [[File:_flying_debris_hazard.png|120px| ]] | |||
|- | |||
| colspan="2" | | |||
|- | |||
|} | |||
* Beware of flying chips. They are '''HOT''' and '''SHARP.''' | |||
* '''Do not wear loose clothing''' or jewelry when operating the machine. Long hair must be tied back or covered. | |||
* Do not wear gloves. Gloves can be drawn into a cut by the spinning tool. | |||
* Do not remove chips from the cutting area with bare hands. Use a chip brush or a shop-vac. | |||
* Always keep a secure, stable stance. Avoid over-reaching. Clean up oil spills immediately and avoid slipping. Keep the work area clear of trip hazards. | |||
==Machine== | |||
* Work must be clamped securely in a vise and the vise clamped tightly to the table, or, work must be clamped securely to the table. | |||
* Always stay at the machine while it is running. | |||
* Do not operate the machine if any unusual or excessive heat, noise, smoke, or vibration occurs. | |||
* '''Make sure the spindle has come to a complete stop''' before changing tools or unloading the workpiece. Keep hands clear of the spindle start switch when changing tools. | |||
* '''NEVER USE COMPRESSED AIR''' to remove chips from the work area. | |||
* Remove all wrenches, chuck keys, and loose parts before turning on the machine. | |||
* Before running machine the spindle should be rotated by hand to make sure it is clear for cutting. | |||
* Make sure the cutter is rotating in the proper direction before cutting material. | |||
* Always use sharp cutters that are in good condition. | |||
{| class="wikitable" | |||
|+ Vertical 3-Axis Milling Machines at Artisans Asylum | |||
|- | |||
! [[:Accupath Mill | Accu II Mill]] !! Enco Mill !! [[:Sharp Manual Milling Machine |Sharp Mill "Click"]] !! [[:Sharp Manual Milling Machine |Sharp Mill "Clack"]] !! Bridgeport Mill | |||
|- | |||
| CNC || Manual || Manual || Manual || Manual (Out of Service) | |||
|- | |||
| [[File:Mill_Accu_II.png|200px]] || [[File:Mill_Enco.png|170px]] || [[File:Mill_Sharp_Click.png|150px]] || [[File:Mill_Sharp_Clack.png|150px]] || [[File:Mill_Bridgeport.png|150px]] | |||
|} | |||
=Parts of a Milling Machine= | |||
{| class="infobox" cellspacing="5" style="width: 22em; text-align: left; font-size: 100%; line-height: 1.5em;" | |||
! colspan="2" class="infobox-image" | [[File:milling_machine_labeled.png|400px|setup guide sketch ]] | |||
|- | |||
| colspan="2" | Parts of a Milling Machine | |||
|- | |||
|} | |||
'''Headstock:''' | |||
The spindle is driven by the motor at the top. Frequently there is a crank-operated speed control located on the front. | |||
An emergency stop (E-STOP) button is always located next the the motor power switch. | |||
The spindle is raised and lowered through the Quill, actuated by a handle on the side of the headstock. | |||
Tools are held in place with a drawbar that extends through the center of the spindle. The draw-bar can be tightened manually or with a pneumatic motor. | |||
'''Table:''' | |||
The moving table is carried on the machine's saddle. | |||
Side-to-side (Longitudinal) motion of the table is controlled by ball crank handles on either end of the table. The scales are incremented by 0.001 inches. | |||
'''Knee:''' | |||
In-and-out (Cross) motion of the table is controlled by a crank on the front of the knee, also incremented by 0.001 inches. | |||
The table is raised and lowered vertically by a crank on the side of the knee. | |||
'''Base and Turret''' | |||
These provide stability and allow some adjustment of the headstock. |
Revision as of 20:59, 2 March 2024
Vertical Milling Machines | |
---|---|
General Info | |
Make | various |
Model | |
Serial | |
Specs | |
Manual | |
Asylum Info | |
Location | Machine Shop |
Rubric | |
Training | |
Testing | |
Restrictions | red |
Description
On a milling machine, parts are created by removing material from a solid block (or workpiece) using a variety of spinning cutting tools.
A 3-axis vertical milling machine has a variable-speed vertical spindle and a heavy table that translates underneath it. A metal workpiece is clamped to the table and a cutting tool is held in the spindle. Cutting is done by moving the workpiece against the spinning tool, or by lowering the spinning tool into the workpiece.
A CNC milling machine operates by computer control. Motors are attached to the movement mechanics allowing the computer to make precision-machined parts automatically.
Use For | Do Not Use For |
---|---|
|
|
Safety Notes
Eye protection required! | ||
---|---|---|
Personal
- Wear safety goggles. Eyeglasses are NOT safety goggles.
- Beware of flying chips. They are HOT and SHARP.
- Do not wear loose clothing or jewelry when operating the machine. Long hair must be tied back or covered.
- Do not wear gloves. Gloves can be drawn into a cut by the spinning tool.
- Do not remove chips from the cutting area with bare hands. Use a chip brush or a shop-vac.
- Always keep a secure, stable stance. Avoid over-reaching. Clean up oil spills immediately and avoid slipping. Keep the work area clear of trip hazards.
Machine
- Work must be clamped securely in a vise and the vise clamped tightly to the table, or, work must be clamped securely to the table.
- Always stay at the machine while it is running.
- Do not operate the machine if any unusual or excessive heat, noise, smoke, or vibration occurs.
- Make sure the spindle has come to a complete stop before changing tools or unloading the workpiece. Keep hands clear of the spindle start switch when changing tools.
- NEVER USE COMPRESSED AIR to remove chips from the work area.
- Remove all wrenches, chuck keys, and loose parts before turning on the machine.
- Before running machine the spindle should be rotated by hand to make sure it is clear for cutting.
- Make sure the cutter is rotating in the proper direction before cutting material.
- Always use sharp cutters that are in good condition.
Accu II Mill | Enco Mill | Sharp Mill "Click" | Sharp Mill "Clack" | Bridgeport Mill |
---|---|---|---|---|
CNC | Manual | Manual | Manual | Manual (Out of Service) |
Parts of a Milling Machine
Parts of a Milling Machine |
Headstock:
The spindle is driven by the motor at the top. Frequently there is a crank-operated speed control located on the front.
An emergency stop (E-STOP) button is always located next the the motor power switch.
The spindle is raised and lowered through the Quill, actuated by a handle on the side of the headstock.
Tools are held in place with a drawbar that extends through the center of the spindle. The draw-bar can be tightened manually or with a pneumatic motor.
Table:
The moving table is carried on the machine's saddle.
Side-to-side (Longitudinal) motion of the table is controlled by ball crank handles on either end of the table. The scales are incremented by 0.001 inches.
Knee:
In-and-out (Cross) motion of the table is controlled by a crank on the front of the knee, also incremented by 0.001 inches.
The table is raised and lowered vertically by a crank on the side of the knee.
Base and Turret
These provide stability and allow some adjustment of the headstock.
Pages in category "Milling Machines"
The following 6 pages are in this category, out of 6 total.