GSK GSK983Ma, User Manual

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Chapter Three Programming
31
Part 1 Programming
the feedrate rotates, the bigger the acceleration/deceleration tome constant occurs, the bigger the
corner error is.
Note 1: The feedrate changes between the blocks of the specified different movement, as follows:
The previous block
New block
Positioning Cutting feed Not move
Positioning × × ×
Cutting feed × ○ ×
Not move × × ×
×: The next block is performed after the command speed is decelerated to zero.
○ : Continue to perform the next block, so that the feedrate is not changed widely.
Note 2: The deceleration is performed on each axis separately (X or Z axis) and the feedrate of each axis
may occur between blocks. Therefore, the actual tool path does not match for the programmed
path. For example, if the tool only moves along X axis in a block, and along Z axis in the next
block, it is then decelerated along with the X axis direction nearby the corner, and then
accelerated along the Z axis direction. The actual tool path is shown below:
In the circular arc interpolation, the actual arc radius should be less than the programmed one (refer to
the appendix), this error can be carried out by reducing the time constant of acceleration or deceleration as
much as possible.
3.4.7 Automatic Corner Modification
If the tool is performed a tough machining with tool compensation based on the program feedrate
within the inner corner and inner circular arc area, the tool cutting overload may occur. This function
can be automatically decrease the feedrate to reduce the overload of tool in the above-named area,
so than the smooth machining surface can be carried out.
3.4.7.1 The automatic modification of inner corner
1) Working conditions
When two blocks (the previous one and the latter one) are available for the following conditions,
the feedrate can be achieved the automatic modification.
a. G codes of group 01 are G01, G02 or G03.
b. In the offset mode, the value of offset does not 0.