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Peck drilling cycle (G83, G87)

Peck drilling cycle (G83, G87):-


Format:-
G83 X(U)_ C(H)_ Z(W)_ R_ Q_ P_ F_ K_ M_ ;
or
G87 Z(W)_ C(H)_ X(U)_ R_ Q_ P_ F_ K_ M_ ;


X_ C_ or Z_ C_  :  Hole position data
Z_ or X_   :  The distance from point R to the bottom of the hole
R_  :  The distance from the initial level to point R level
Q_  :  Depth of cut for each cutting feed
P_  :  Dwell time at the bottom of a hole
F_  :  Cutting feedrate
K_  :  Number of repeats (When it is needed.)
M_  :  M code for C–axis clamp (When it is needed.)


Examples:-
       M51  ;                Setting C–axis index mode ON
       M3 S2000 ;         Rotating the drill
      G00 X50.0 C0.0 ; Positioning the drill along the X– and C–axes
      G83 Z–40.0 R–5.0 Q5000 F5.0 M31 ; Drilling hole 1
      C90.0 M31 ;                Drilling hole 2
      C180.0 M31 ;      Drilling hole 3
      C270.0 M31 ;      Drilling hole 4
      G80 M05 ;   Canceling the drilling cycle and stopping drill rotation
      M50 ;                  Setting C–axis index mode off




Notes:-
                   If the depth of cut for each cutting feed (Q) is not commanded, normal drilling is performed.(see the description of the drilling cycle.)

Front Drilling Cycle (G83) / Side Drilling Cycle (G87)

The peck  drilling  cycle  or  high–speed  peck  drilling  cycle  is  used depending on the setting in RTR, bit 2 of parameter No. 5101.  If depth of cut for each drilling is not specified, the normal drilling cycle is used.


High–speed peck drilling cycle (G83, G87):-


This cycle performs high–speed peck drilling. The drill repeats the cycle of drilling at the cutting feedrate and retracting the specified retraction distance intermittently to the bottom of a hole.  The drill draws cutting chips out of the hole when it retracts.


Format:-


G83 X(U)_ C(H)_ Z(W)_ R_ Q_ P_ F_ K_ M_ ;
or
G87 X(U)_ C(H)_ Z(W)_ R_ Q_ P_ F_ K_ M_ ;




X_ C_ or Z_ C_  :  Hole position data


Z_ or X_   :  The distance from point R to the bottom of the hole


R_  :  The distance from the initial level to point R level


P_  :  Dwell time at the bottom of a hole


F_  :  Cutting feedrate


K_  :  Number of repeats (When it is needed.)


M_  :  M code for C–axis clamp (when it is needed.)



Canned Cycle For Drilling G80-G89

Canned Cycle For Drilling (G80 G89):-
The canned cycle for drilling simplifies the program normally by directing the machining operation commanded with a few blocks, using one block including G code.


Canned cycle:-
        G80  =      Cancel
        G83  =      Front Drilling Cycle
        G84  =      Front Tapping Cycle
        G85  =      Front Boring Cycle
        G87  =      Side Drilling Cycle
        G88  =      Side Tapping Cycle
        G89  =      Side Boring Cycle


In general, the drilling cycle consists of the following six operation sequences.


Operation 1  = Positioning of X (Z) and C axis
Operation 2  = Rapid traverse up to point R level
Operation 3  = Hole machining
Operation 4  = Operation at the bottom of a hole
Operation 5   =  Retraction to point R level
Operation 6  = Rapid traverse up to the initial point




Notes:-
                                          i.    For the B or C G–code system, G90 or G91 can be used to select   an  incremental  or  absolute  command  for  hole position data (X, C or Z, C), the distance from point R to the bottom of the hole (Z or X), and the distance from the initial level to the point R level (R).


                                        ii.    In each canned cycle,R_ (distance between the initial level and point R) is always handled as a radius.Z_ or X_ (distance between point R and the bottom of the hole) is, however, handled either as a diameter or radius, depending on the specification.

List of the keyboard shortcuts that are available in Windows XP





Getting familiar with keyboard shortcuts not only help you get the work done faster, but also more efficient. If your daily job relies heavily on using Windows, here are some Windows Keyboard Shortcuts you might want to check out. If there’s any nifty shortcuts we have missed, appreciate a heads up.


The General Shortcuts
We’ll kickoff the list with some really general shortcuts that you often used.
§  CTRL+C (Copy)
§  CTRL+X (Cut)
§  CTRL+V (Paste)
§  CTRL+Z (Undo)
§  Delete (Delete)
§  Shift+Delete (Delete the selected item permanently without placing the item in the Recycle Bin)
§  CTRL while dragging an item (Copy the selected item)
§  CTRL+Shift while dragging an item (Create a shortcut to the selected item)
§  F2 key (Rename the selected item)
§  CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
§  CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
§  CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
§  CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
§  CTRL+Shift with any of the arrow keys (Highlight a block of text)
§  Shift with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
§  CTRL+A (Select all)
§  F3 key (Search for a file or a folder)
§  Alt+Enter (View the properties for the selected item)
§  Alt+F4 (Close the active item, or quit the active program)
§  Alt+Enter (Display the properties of the selected object)
§  Alt+Spacebar (Open the shortcut menu for the active window)
§  CTRL+F4 (Close the active document in programs that enable you to have multiple documents open simultaneously)
§  Alt+Tab (Switch between the open items)
§  Alt+ESC (Cycle through items in the order that they had been opened)
§  F6 key (Cycle through the screen elements in a window or on the desktop)
§  F4 key (Display the Address bar list in My Computer or Windows Explorer)
§  Shift+F10 (Display the shortcut menu for the selected item)
§  Alt+Spacebar (Display the System menu for the active window)
§  CTRL+ESC (Display the Start menu)
§  Alt+Underlined letter in a menu name (Display the corresponding menu)
§  Underlined letter in a command name on an open menu (Perform the corresponding command)
§  F10 key (Activate the menu bar in the active program)
§  RIGHT ARROW (Open the next menu to the right, or open a submenu)
§  LEFT ARROW (Open the next menu to the left, or close a submenu)
§  F5 key (Update the active window)
§  Backspace (View the folder one level up in My Computer or Windows Explorer)
§  ESC (Cancel the current task)
§  Shift when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from automatically playing)
Dialog Box Keyboard Shortcuts
§  CTRL+Tab (Move forward through the tabs)
§  CTRL+Shift+Tab (Move backward through the tabs)
§  Tab (Move forward through the options)
§  Shift+Tab (Move backward through the options)
§  Alt+Underlined letter (Perform the corresponding command or select the corresponding option)
§  Enter (Perform the command for the active option or button)
§  Spacebar (Select or clear the check box if the active option is a check box)
§  Arrow keys (Select a button if the active option is a group of option buttons)
§  F1 key (Display Help)
§  F4 key (Display the items in the active list)
§  Backspace (Open a folder one level up if a folder is selected in the Save As or Open dialog box)
Microsoft Natural Keyboard Shortcuts
§  Win (Display or hide the Start menu)
§  Win+BREAK (Display the System Properties dialog box)
§  Win+D (Display the desktop)
§  Win+M (Minimize all of the windows)
§  Win+Shift+M (Restore the minimized windows)
§  Win+E (Open My Computer)
§  Win+F (Search for a file or a folder)
§  CTRL+Win+F (Search for computers)
§  Win+F1 (Display Windows Help)
§  Win+ L (Lock the keyboard)
§  Win+R (Open the Run dialog box)
§  Win+U (Open Utility Manager)
Accessibility Keyboard Shortcuts
§  Right Shift for eight seconds (Switch FilterKeys either on or off)
§  Left Alt+left Shift+PRINT SCREEN (Switch High Contrast either on or off)
§  Left Alt+left Shift+NUM LOCK (Switch the MouseKeys either on or off)
§  Shift five times (Switch the StickyKeys either on or off)
§  NUM LOCK for five seconds (Switch the ToggleKeys either on or off)
§  Win +U (Open Utility Manager)
Windows Explorer Keyboard Shortcuts
§  END (Display the bottom of the active window)
§  HOME (Display the top of the active window)
§  NUM LOCK+* (Display all of the subfolders that are under the selected folder)
§  NUM LOCK++ (Display the contents of the selected folder)
§  NUM LOCK+- (Collapse the selected folder)
§  LEFT ARROW (Collapse the current selection if it is expanded, or select the parent folder)
§  RIGHT ARROW (Display the current selection if it is collapsed, or select the first subfolder)
Shortcut Keys For Character Map
§  After you double-click a character on the grid of characters, you can move through the grid by using the keyboard shortcuts:
§  RIGHT ARROW (Move to the right or to the beginning of the next line)
§  LEFT ARROW (Move to the left or to the end of the previous line)
§  UP ARROW (Move up one row)
§  DOWN ARROW (Move down one row)
§  PAGE UP (Move up one screen at a time)
§  PAGE DOWN (Move down one screen at a time)
§  HOME (Move to the beginning of the line)
§  END (Move to the end of the line)
§  CTRL+HOME (Move to the first character)
§  CTRL+END (Move to the last character)
§  Spacebar (Switch between Enlarged and Nor mal mode when a character is selected)
Microsoft Management Console (MMC) Main Window Keyboard Shortcuts
§  CTRL+O (Open a saved console)
§  CTRL+N (Open a new console)
§  CTRL+S (Save the open console)
§  CTRL+M (Add or remove a console item)
§  CTRL+W (Open a new window)
§  F5 key (Update the content of all console windows)
§  Alt+Spacebar (Display the MMC window menu)
§  Alt+F4 (Close the console)
§  Alt+A (Display the Action menu)
§  Alt+V (Display the View menu)
§  Alt+F (Display the File menu)
§  Alt+O (Display the Favorites menu)
MMC Console Window Keyboard Shortcuts
§  CTRL+P (Print the current page or active pane)
§  Alt+- (Display the window menu for the active console window)
§  Shift+F10 (Display the Action shortcut menu for the selected item)
§  F1 key (Open the Help topic, if any, for the selected item)
§  F5 key (Update the content of all console windows)
§  CTRL+F10 (Maximize the active console window)
§  CTRL+F5 (Restore the active console window)
§  Alt+Enter (Display the Properties dialog box, if any, for the selected item)
§  F2 key (Rename the selected item)
§  CTRL+F4 (Close the active console window. When a console has only one console window, this shortcut closes the console)
Remote Desktop Connection Navigation
§  CTRL+Alt+END (Open the m*cro$oft Windows NT Security dialog box)
§  Alt+PAGE UP (Switch between programs from left to right)
§  Alt+PAGE DOWN (Switch between programs from right to left)
§  Alt+INSERT (Cycle through the programs in most recently used order)
§  Alt+HOME (Display the Start menu)
§  CTRL+Alt+BREAK (Switch the client computer between a window and a full screen)
§  Alt+Delete (Display the Windows menu)
§  CTRL+Alt+- (Place a snapshot of the active window in the client on the Terminal server clipboard and provide the same functionality as pressing PRINT SCREEN on a local computer.)
§  CTRL+Alt++ (Place a snapshot of the entire client window area on the Terminal server clipboard and provide the same functionality as pressing Alt+PRINT SCREEN on a local computer.)
Internet Explorer Navigation
§  CTRL+B (Open the Organize Favorites dialog box)
§  CTRL+E (Open the Search bar)
§  CTRL+F (Start the Find utility)
§  CTRL+H (Open the History bar)
§  CTRL+I (Open the Favorites bar)
§  CTRL+L (Open the Open dialog box)
§  CTRL+N (Start another instance of the browser with the same Web address)
§  CTRL+O (Open the Open dialog box, the same as CTRL+L)
§  CTRL+P (Open the Print dialog box)
§  CTRL+R (Update the current Web page)
§  CTRL+W (Close the current window)






 
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