TOMATECH AUTOMATION
block of finishing path(ns block)is called B point; the end point of finishing
path(end point of nf block) is called C point. The finishing path is A→B→C.
Roughing path: It is one group of offset path of finishing one, and the roughing path
times are the same that of cutting. After the coordinates offset, A, B, C of finishing path
separately corresponds to An, Bn , Cn of roughing path(n is the cutting times,
the first cutting path is A1, B1, C1 and the last one is Ad, Bd, Cd). The
coordinates offset value of the first cutting compared to finishing path is
(Δi×2+Δu, Δw+Δk) (diameter programming) , the coordinates offset value of
the last cutting compared to finishing path is(Δu, Δw) , the coordinates offset
value of each cutting compared to the previous one is as follows:
Δi: It is X tool retraction clearance in roughing, and its range is ±99999999× least input
increment (radius, unit: mm/inch, with sign symbol) , Δi is equal to X coordinate offset
value (radius value) of A1 point compared to Ad point. The X total cutting travel(radius
value) is equal to |Δi| in roughing, and X cutting direction is opposite to the sign of Δi: Δi
＞0, the system executes X negative cutting in roughing. It is reserved after Δi specified
value is executed and the data is switched to the corresponding value to save to NO.053.
The No.053 value is regarded as X tool retraction clearance in roughing when U(Δi) is
not input.
Δk: It is Z tool retraction clearance in roughing, and its range is ±99999999× least input
increment (radius, unit: mm/inch, with sign symbol) , Δk is equal to Z coordinate offset
value (radius value) of A1 point compared to Ad point. Z total cutting travel(radius value)
is equal to |Δk| in roughing, and Z cutting direction is opposite to the sign of Δk: Δi＞0,
the system executes Z negative cutting in roughing. It is reserved after Δk specified
value is executed and the data is switched to the corresponding value to save to NO.054.
The No.054 value is regarded as Z tool retraction clearance in roughing when W(Δk) is
not input.
d: It is the cutting times 1~9999 (unit: times). R5 means the closed cutting cycle is
completed
by 5 times cutting. R (d) is reserved after it is executed and NO.055 value is rewritten to d
(unit: times). No.055 value is regarded as the cutting times when R(d) is not input. When
the cutting times is 1, the system completes the closed cutting cycle based on 2 times
cutting.
ns: Block number of the first block of finishing path.
nf: Block number of the last block of finishing path.
Δu: It is X finishing allowance and its range is ±99999999× least input increment
(diameter,
unit: mm/inch, with sign symbol) and is the X coordinate offset of roughing path
compared to finishing path, i.e. the different value of X absolute coordinates of A1
compared to A. Δu＞0,it is the offset of the last X positive roughing path compared to
finishing path. The system defaults Δu=0 when U(Δu) is not input, i.e. there is no X
finishing allowance for roughing cycle.
Δw: It is Z finishing allowance and its range is ±99999999× least input increment
(diameter, unit: mm/inch, with sign symbol) and is the X coordinate offset of roughing path
compared to finishing path, i.e. the different value of Z absolute coordinates of A1
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