Deep drilling with chip breaking <CYCLE BRKCHP(288)>


Deep drilling with chip removing cycle performs rapid approach to the safe level and repeated drilling according to specified cut-in depth value <ZI> and withdrawal <Zi> values.

 

Img5_4_31_4

 

Cycle includes:

  • Rapid travel to the <Z safe> level.
  • Work feedrate travel to the <Zl>.
  • Rapid retract to the <Zi> withdrawal value and <Dwell>.
  • Work feedrate travel to the <Zl> + <Zi> level.
  • Rapid retract to the <Zi> withdrawal value and <Dwell>.
  • Repeat until the hole depth level is reached.
  • Rapid retract to the <Safe plane> level.

 

Command:

CYCLE BRKCHP(288), A a, MMPM(315), N nm, F f,

      L l, I i, P p, DWELL(279) h, T t

or

CYCLE BRKCHP(288), A a, MMPR(316), M nm, F f,

      L l, I i, P p, DWELL(279) h, T t

 

Parameters:

Parameter

CLD array

Description

BRKCHP(288)

CLD[1]

CLD.Type

Cycle type 288 (BRKCHP).

a

CLD[2]

CLD.A

Hole depth in current measure units (mm or inches).

MMPM(315)

MMPR(316)

CLD[3]

CLD.MMPM

Feedrate measure units:

315 (MMPM) – mm per minute (inches per minute),

316 (MMPR) – mm per revolution (inches per revolution).

nm

CLD[4]

CLD.NM

Work feedrate value.

f

CLD[5]

CLD.F

Safe level.

L

CLD[6]

CLD.L

Cut in value Zl

i

CLD[7]

CLD.I

Withdrawal value Zi

p

CLD[8]

CLD.P

Safe plane level.

DWELL

CLD[9]

CLD.DWELL

Dwell time keyword.

h

CLD[10]

CLD.H

Tool dwell in seconds.

t

CLD[11]

CLD.Top

Hole top level.

 

 

 

See also:

Hole machining cycles <CYCLE>