ISO programming
G842
G842
Refer to your machine manual.
This function must be enabled and adapted by the machine manufacturer.
This cycle enables you to recess right-angled slots in longitudinal direction. With recess turning, a recessing traverse to plunging depth and then a roughing traverse is alternatively machined. The machining process thus requires a minimum of retraction and infeed movements. Expanded scope of function:
You can use the cycle either for roughing, finishing or complete machining. Turning is run paraxially with roughing.
The cycle can be used for inside and outside machining. If the start diameter Q491 is larger than the end diameter Q493, the cycle runs outside machining. If the start diameter Q491 is less than the end diameter Q493, the cycle runs inside machining.
The control uses the position of the tool at cycle call as the cycle starting point. If the X coordinate of the starting point is less than Q491 Diameter at contour start, the control positions the tool in the X coordinate to Q491 and begins the cycle there.
The control uses the position of the tool at the cycle call as the cycle starting point. If the X coordinate of the starting point is less than Q491 DIAMETER AT CONTOUR START, the control positions the tool in the X coordinate to Q491 and begins the cycle there.
Help graphic | Parameter |
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Q215 Machining operation (0/1/2/3)? Define extent of machining: 0: Roughing and finishing 1: Only roughing 2: Only finishing to final dimension 3: Only finishing to oversize Input: 0, 1, 2, 3 | |
Q460 Set-up clearance? Reserved; currently no functionality | |
Q491 Diameter at contour start? X coordinate of the contour starting point (diameter value) Input: –99999.999...+99999.999 | |
Q492 Contour start in Z? Z coordinate of the contour starting point Input: –99999.999...+99999.999 | |
Q493 Diameter at end of contour? X coordinate of the contour end point (diameter value) Input: –99999.999...+99999.999 | |
Q494 Contour end in Z? Z coordinate of the contour end point Input: –99999.999...+99999.999 | |
Q495 Angle of side? Angle between the edge of the contour starting point and the normal line to the rotary axis. Input: 0...89.9999 | |
Q501 Starting element type (0/1/2)? Define the type of element at the beginning of the contour (circumferential surface): 0: No additional element 1: Element is a chamfer 2: Element is a radius Input: 0, 1, 2 | |
Q502 Size of starting element? Size of the starting element (chamfer section) Input: 0...999.999 | |
Q500 Radius of the contour corner? Radius of the inside corner of the contour. If no radius is specified, the radius will be that of the indexable insert. Input: 0...999.999 | |
Q496 Angle of second side? Angle between the edge at the contour end point and the normal line to the rotary axis. Input: 0...89.9999 | |
Q503 End element type (0/1/2)? Define the type of element at the contour end: 0: No additional element 1: Element is a chamfer 2: Element is a radius Input: 0, 1, 2 | |
Q504 Size of end element? Size of the end element (chamfer section) Input: 0...999.999 | |
Q478 Roughing feed rate? Freed rate during roughing. If M136 has been programmed, the value is interpreted by the control in millimeters per revolution; without M136, in millimeters per minute. Input: 0...99999.999 or FAUTO | |
Q483 Oversize for diameter? Diameter oversize on the defined contour. This value has an incremental effect. Input: 0...99.999 | |
Q484 Oversize in Z? Oversize of the defined contour in the axial direction. This value has an incremental effect. Input: 0...99.999 | |
Q505 Finishing feed rate? Feed rate during finishing. If M136 has been programmed, the value is interpreted by the control in millimeters per revolution; without M136, in millimeters per minute. Input: 0...99999.999 or FAUTO | |
Q463 Maximum cutting depth? Maximum infeed (radius value) in the radial direction. The infeed is distributed evenly to avoid abrasive cuts. Input: 0...99.999 | |
Q507 Direction (0=bidir./1=unidir.)? Cutting direction: 0: Bidirectional (in both directions) 1: Unidirectional (in direction of contour) Input: 0, 1 | |
Q508 Offset width? Reduction of the cutting length. After pre-cutting, the remaining material is removed with a single cut. If required, the control limits the programmed offset width. Input: 0...99.999 | |
Q509 Depth compensat. for finishing? Depending on the material, feed rate, etc., the tool tip is displaced during an operation. You can correct the resulting infeed error with the depth compensation factor. Input: –9.9999...+9.9999 | |
Q488 Feed rate for plunging (0=auto)? Definition of the feed rate during plunging. This input value is optional. If it is not programmed, then the feed rate defined for turning operations applies. Input: 0...99999.999 or FAUTO |
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 CYCL DEF 842 EXPND. RECESS, RADL. ~ | ||
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12 L X+75 Y+0 Z+2 FMAX M303 | ||
13 CYCL CALL |