a51nx ● a61nx

Horizontal Machining Center Makino a51nx a61nx

Introduction

Upgrading the productivity and machining accuracy, and realizing high reliability. Suitable for the parts of semiconductor manufacturing equipment, airplanes, and prototype units, in addition to commercial production parts of automobiles and construction machines. One-grade higher machining capability and machining area enhance the manufacturing power.

 


STRUCTURE

High rigidity machine construction

Pallet clamping system
Pallet can be precisely located on the pallet table with four taper-cones. Each taper cone supports and clamps pallet in a balanced manner. High cutting performance is realized even at the upper point on Y-axis.

Roller linear guides
Cylindrical roller guides are used in the X-, Y- and Z-axis. Rollers provide line contact area, which enhances rigidity and load capacities of the machines.

Stepped column
The two X-axis guides under the column are at different heights. This stepped design supports the machine to move at high speed and high acceleration mode by reducing the weight of column without compromising rigidity of the machine in Z-axis direction.

Advanced axis cooling system
Heat generation in the axes during high speed machining can affect accuracy and performance of the machine. The nx machine has the cooling technology of ball screw core and ball screw support bearing. Cooling oil is maintained as per the bed casting temperature and circulated through to the ball screws and end support
bearings.

Three-point support
The machine body is designed to sit on the shop floor with only three-point support. This structure reduces installation time and makes relocation work easy.

 


MOTION
CONTROL

Control unit that maximizes machine performance
Professional 6 optimizes machine motion, according to machining conditions. Even in machining with high-speed and high-acceleration, machining surface quality and shape accuracy can be kept. Machining efficiency is totally enhanced. A variety of machining modes are preset. Operator can easily choose suitable one for its purpose.

Makino Professional 6 control unit

 

 

Advanced control technology (for reducing non-cutting time) 

Professional 6 advanced control technology



PERFORMANCE

Realizing the machining performance equivalent to No.50 spindle
— High torque spindle 303 N·m/119 N·m (standard) —

 14000 min-1 spindle (303 N.m)
Speed —————— 50 – 14000 min-1
Torque —————— 303 / 119 N.m (10%ED / Cont.)
Acceleration time — 1.4 sec (14000 min-1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20000 min-1 spindle (optional specification)
(HSK-A63)
Speed —————— 50 – 20000 min-1

 
  Tool Used   80 mm dia. Drill
  Material   Grey cast iron (FC250)
  Spindle speed   585 min-1
  Feedrate   150 mm/min
  Spindle   14000 min-1 (303 N·m)
 
 
125 mm diameter face mill (7 inserts with carbide chips)
Material Gray Cast iron (FC250) 
Cutter material CBN Carbide 
Metal removal rate 1400 cm3/min 632 cm3/min
Axial depth of cutting 2 mm 10 mm
Radial depth of cutting 87.5 mm 90 mm
Spindle speed 4000 min-1 585 min-1
Feed rate 8000 mm/min 702 mm/min 
 
 
  Units a51nx a61nx
Travels X mm 560 730
Y mm 640 650
Z mm 640 800
Table Size mm 400 x 400 500 x 500
Maximum work piece
weight
(evenly distributed)
kg 400 500
Spindle Taper (Option) - 7/24 No.40 taper
(HSK-A63)
Speed mm-1 50 – 14000 min-1
Feedrates Rapid/Cutting mm/min 60,000
Automatic tool
changer
Tool Capacity - 60 tools (standard),
133, 218 tools (optional)
Machine Width x depth mm 2,659 x 4,193 2,910 x 4,879
Height mm 2,796 2,923
Weight kg 10,000 12,000