Categories

 

G-Wizard Calculator:
Fast, Easy, Reliable Feeds and Speeds

Subscribe

Join 100,000+ CNC'ers!  Get our latest blog posts delivered straight to your email inbox once a week for free. Plus, we’ll give you access to some great CNC reference materials including:

  • Our Big List of over 200 CNC Tips and Techniques
  • Our Free GCode Programming Basics Course
  • And more!

 

GCode is Complicated
G-Wizard Makes it Easy

14 Great Ideas for 4th Axis Fixtures to Save Time

Dec 7, 2016   //   by Bob Warfield   //   Blog, CNC Projects, Manufacturing, Techniques  //  1 Comment

Our recent article that showed the math behind using 4th axis to increase your work area was very popular, so I thought I’d follow up with a bunch of pictures of fourth axis fixtures.  Hopefully these will give you some ideas you can use!

Fourth Axis Fixture

A quick way to access a lot of small parts with a Fourth Axis.  The cylinders can be swapped out quickly for almost palette-changer like setup times.

 Fourth Axis Fixture

Another cylindrical fixture for small parts.  Note the washer cutout.  Loosen the bolt 1/4 turn, slide the washer off, and the center hole allows the fixture to be removed and swapped for another quickly.

 Fourth Axis Fixtures

Lots of small parts in a fourth axis fixture with pneumatic clamping…

 Fourth Axis Fixture

Another setup for making lots of small parts.  It overhangs the 4th and the tailstock so the tombstone can use the full travels of the machine for maximum production…

Fourth Axis Fixtures

Depending on your application, it makes sense to think about how to make setup faster.  Dialing in the fourth axis and tailstock can be a pain, but if you have a fixture plate, you can set up for drop in repeatability.  Next question is how to repeat installing you fixtures on the fourth axis?  This picture shows one of two Jergens Ball Locks that are used together with two 3/4″ dowel pins (one right below that ball lock in the pic) to provide the fixture plate equivalent of drop in repeatable setups on the fourth axis.

Fourth Axis Tailstock

This shop-made fourth axis tailstock that goes with the same Jergens locked tombstone above has some cool ideas.  There’s a pin operated by the lever that engages an angular contact bearing in the tombstone.

fourthaxistailstock2

On the other side of the tailstock is a little movable v-block that holds the tombstone until the sliding ballnosed pin can be engaged to hold it securely.  Very well thought out!

fourth axis 5c collet fixture

Here’s a neat fouth axis fixture with 5C collets from PAWS workholding

Fourth Axis Fixture 5C Collet

For this part, access on the two sides was important, and the fourth axis makes that easy.  Note the lever to release the pneumatic lock on the left.

Fourth axis fixture for round stock

Fourth axis fixture clamping round stock from the side…

Fourth Axis Fixture Trunion Table

Very slick tombstone trunnion from Stevens Engineering has quick locks for fixture plates.

fourth axis vise mount

Another neat fixture from Stevens Engineering.  If you’ve got a big enough machine, mount 3 two-station vises!

 Fourth Axis Fixture Uniforce Clamps

Check out the uniforce clamps on this fixture for holding small parts.

 Fourth Axis V Block Fixture

Here’s a very special fourth axis fixture from Intellitool.  Parts are supported via V-block cradle and individually hydraulically clamped.

What kinds of neat fourth axis fixturing have you used on your jobs?  Share some examples in the comments below!

 

Like what you read on CNCCookbook?

Join 100,000+ CNC'ers!  Get our latest blog posts delivered straight to your email inbox once a week for free. Plus, we’ll give you access to some great CNC reference materials including:

  • Our Big List of over 200 CNC Tips and Techniques
  • Our Free GCode Programming Basics Course
  • And more!

Just enter your name and email address below:

Full Name
Email *
100% Privacy: We will never Spam you!

14 Great Ideas for 4th Axis Fixtures to Save Time
4.7 (93.33%) 3 votes

1 Comment

  • To see these my mind boggles. On my router I am using an old 40-1 right angle gearbox an engineer friend thought I may be able to use. I made a nose for it threaded same as my baby lathe spindle so I can use my chucks or a fitting I made for woodwork. Fitted a small stepper to drive it. Tailstock is fabricated from steel (mark 2 version in the pipeline) This all goes on a home built router using VCP8.5 and Mach3. I think I have as much fun building this stuff as modeling withit

Leave a comment

 

Do you want to be a better CNC'er?

Get Better Tool Life, Surface Finish, and Material Removal Rates.

 

Start Now, It's Free!

Home

Software

  GW Calculator

  GW Editor

  Gearotic

  Conversational

  Deals and Steals

CNC Blog

  Software

  Techniques

  Beginner

  Cool

  Projects

 

Cookbooks

     Feeds and Speeds

     G-Code Tutorial

     CNC Machining & Manufacturing

     DIY CNC Cookbook

     CNC Dictionary

CNC Projects

Resources

     Machinist's Search

     Videos

     Online Groups

     Individuals

     Reference Data

     Books

     CNC Dictionary

     Suppliers

     Tool Brands

Workshop

     Hall of Fame

     Organization: Soon!

 

About

     Customers

     Partners

     Our History

     Privacy Policy

 
All material © 2016, CNCCookbook, Inc.