GSK GSK988TA, Руководство пользователя

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Chapter 2 G Commands
99
Ⅰ
Programming
cutting when the pitch is defined. The spindle override control is valid in thread cutting. When the
spindle speed is changed, there is error in pitch caused by X or Z acceleration/deceleration, and so
the spindle speed cannot be changed and the spindle cannot be stopped in thread cutting, which will
cause tool and workpiece to be damaged.
Note: When the modal function is used, M30 (M30 modal in MDI mode cannot be cancelled) in Auto mode or G
codes in Group 01 can cancel the mode state.
2.20.1 Thread Cutting with Constant Lead G32
Command function: Executing G32 can machine the metric or inch straight, taper, end face
thread and continuous multi-section thread:
Command format
：
G32 IP_ F_ J_ K_ Q_
Code specifications: G32 is modal;
Q rules:
1. Its initial angle is 0° if Q is not specified;
2. For continuous thread cutting, Q specified by its following thread cutting block except for the
first block is invalid, namely Q is omitted even if it is specified;
3. In ISB mode, Q unit is 0.001°. ISC mode, Q unit is 0.0001°. Example, in ISB mode, Q180000
is input in program if it offsets 180° with spindle one rev; if Q180 or Q180.0, it is 0.18°. When
the system specifies the value is more than 360000, it counts based on 360000(360°);
4. It is suggested that the system should use G97 instead of the constant surface cutting speed
control in thread cutting.
Address Incremental
system
Metric
（
mm
）
input
Inch (inch) input
F ISB
0.01 mm
～
500 mm 0.0001 inch
～
9.99inch
IP_ End point coordinate value. It can be specified by the absolute code value or
incremental code value. The system specifies the different IP_ value to execute the
straight thread cutting, end face thread cutting and taper thread cutting.
F
Metric pitch is moving distance of long axis when the spindle rotates one-turn and its
value range is referred to the following table. After F is executed, it is valid until F with
specified pitch is executed again. The pitch F value precision is the last two-digit of the
decimal. The value is specified by radius value.
J
Travel in the short axis in thread run-out with positive/negative sign symbols and the
value range is referred to the following table; the value is specified by the radius value.
K Length in the long axis in thread run-out. The value range is referred to the following
table without direction; the value is specified by radius value.
Q
Initial angle between spindle rotation one-turn and start point of thread cutting. The
value range without the decimal is referred to the following table. Q is non-modal
parameter, must be defined every time, it is 0
0
.when it is not specified, the system
specifies Q different value can cut multi-thread.