Horizontal Machining Center Makino A71

A horizontal machining center designed for high-volume machining of cast-iron and light-alloy parts of automobiles, construction machinery, agricultural equipment and other machines.

Three-point support system

With the three-point support system, the a series can be installed quickly if the shop floor has a certain level of rigidity. This system also allows the machine to be moved quickly if the production layout is changed, and it eliminates the need for leveling maintenance.

Ball screw cooling

High-speed movement during long hours of operation causes the ball screws to generate heat that can affect accuracy and machining performance. On the a series, cooling oil controlled to the bed temperature is circulated to the nuts and through the hollow ball screws to suppress this heat generation.

The spindle accelerates quickly to its top speed of 10,000 min-1 in just 2.4 sec. Moreover, because it facilitates rigid tapping at 2,500 min-1, it is effective in shortening machining times for large-volume parts.

Super GI.4 control further enhances the high-speed performance of Makino’s machining centers.

It shortens machining times in high-definition milling of dies and molds by 15% on average and by up to 30%.

Super GI.4 displays its maximum effectiveness especially when machining at high feedrates resulting from higher spindle speeds.
※compared with Super GI.3 control.

CNC Controller Professional 5

Operating ease has been enhanced by adopting Windows-like display screens and a touch-panel.

A “data center function” is also provided as a standard feature for centralized management of various types of data. Improved network functionality makes it possible to transfer and edit files in a PC-like manner.

Quick Evacuation of large chip volumes
Because the interior of the machining chamber is constructed of sharply slanted and vertical panels, chips and coolant are easily flushed into the center chip trough positioned directly under the table for quick evacuation from the machine. A filtration unit built into the lift-up chip conveyor ensures a constant supply of clean coolant.

An 8-nozzle coolant supply device for the spindle, overhead shower coolant system, center chip trough and base coolant, and a lift-up chip conveyor are all standard features for achieving superior surface quality in continuous machining.