Reduced Peck - HAAS Automation UK

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Book a Demo My Haas Search Reduced Peck

A common operation performed on machine tools is drilling – spot drilling, straight drilling or ‘peck’ drilling. The principles are basically the same, whether it is applied on a lathe or a mill and to a large extent are the same as those used on a manual pedestal type drill.

If the material is soft (a relative term obviously!) then it’s likely the operator is simply going to pull down on the quill and push the drill straight through. With harder materials it may be necessary to periodically lift the drill away from the ‘cutting face’, clearing swarf and allowing coolant in, then continuing the operation for a further ‘peck’ amount and so on. Conversely, softer materials and plastics in particular, are prone to producing ‘stringy’ swarf and this needs to be broken up, therefore introducing a peck is a useful function.

Most CNC machines have basic facilities for peck drilling, which whilst achieving the requirements above are not actually producing the best results both in terms of drill life and also cycle time and ultimate machine productivity. Haas have incorporated a number of optional features within their drilling cycles to allow the user to customise the operation. Take the G83 cycle below, all the normal commands are available for feedrate, hole depth etc., but in addition you have the option of specifying an I, J and K value, where I is the depth of the first cut, J is the amount to reduce each cut or peck by and K is the minimum amount of each peck, in other words as the hole gets deeper the actual cutting peck is decreased.

G83 Normal Peck Drilling Canned Cycle

F Feedrate in inches (or mm) per minute

I Size of first cutting depth

J Amount to reduce cutting depth each pass

K Minimum depth of cut

L Number of holes if G91 (Incremental Mode) is used

P Pause at end of last peck, in seconds (Dwell)

Q Cut depth, always incremental

R Position of the R plane (position above the part)

X X-axis location of hole

Y Y-axis location of hole

Z Position of the Z-axis at the bottom of hole

The other drilling cycles, G81, G82 and G73 also have optional commands, which can be applied.

Control Options

  • Avoiding That Crash
  • Automatic Maintenance Reminders
  • Developing Offsets
  • Removing Unnecessary Code
  • The Haas Multi Function Jog Handle – Part 2
  • The Haas Multi Function Jog Handle – Part 1
  • Help to Restart
  • Checking Tools Mid-Program
  • Coolant Level
  • Graphical Speed
  • Reduced Peck
  • Saving an MDI Program
  • Backing Up Your Machine
  • USB Drip Feeding (FNC)
  • Duplicating/Editing a Program
  • Ignoring Active Work Offsets
  • Clearing Tool and Work Offsets
  • Working out Drill Depth
  • Search for Part of a Code in a Program
  • Modelled Surfaces
  • Setting 103 (CYC START/FH SAME KEY)
  • Run Stop Jog Continue
VF-1 & HRC210 Fits with a Traditional Setup
Caution: This Rotary May Fit

For Example: When a rotary fits with alternative fixturing, it may fit in that particular Haas mill, but will require a sub-plate or alternate T-slot for proper positioning. We have labeled this particular rotary and mill combination with a yellow caution

  • The size of rotary
  • The size of the mill table and the machine's travels
  • The space between the mill table and sheetmetal enclosure

You can design and build your own sub-plate using the dimensions of your Haas mill and the dimensions of the rotary you'd like to use on that mill. Product dimensions are available for every machine and rotary on this website.

Dimensions1 Dimensions2 Rotary Type: Single-Head Rotary

Single-Head Rotary Tables and Indexers are usually mounted to the right side of the table, with the rotary facing the centre of the machine. This is the basic setup we used to determine the fit of your rotary product.

Rotary Type - Single Head

Image shown for mounting example purposes only. Your actual rotary and mill appearance may differ.

Rotary Type: Tilting/Trunnion

Trunnion Tables, T5Cs, and TRTs are usually mounted in the centre (or slightly off-centre) of the mill table. If you are using probing on the mill, be aware of the interference with larger tools, especially during tool changes.

NOTE: Trunnion units present interference issues with the swing of the unit relative to the machine column and spindle head.

Rotary Type - Tilting Trunnion

Image shown for mounting example purposes only. Your actual rotary and mill appearance may differ.

Rotary Type: Multi-Head Rotary

Multi-Head Rotary Tables and Indexers are usually mounted toward the back of the table, with the indexer heads or platter facing forward. To mount a multi-head rotary in a different orientation, you must use alternative fixturing.

Rotary Type - Multi Head

Image shown for mounting example purposes only. Your actual rotary and mill appearance may differ.

Important Information:

4-axis machines cannot use dual-axis rotaries. Some options may affect mounting (EC-1600 4th-Axis Table, Low-Profile Tables, Table Spacers, Column Risers, etc. Tool Changers: SMTCs and umbrella tool changers both present interference issues, plan appropriately.

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