50-6000r/Min Spindle Speed CNC Screen Plate Steel Drilling Machine With Servo Motor

Applications:

The machine is primarily developed for high-efficiency drilling of workpieces such as sieve plates and thin metal sheets within the specified effective thickness range. It is suitable for machining through-holes in both single-material and composite-material components. The entire machining process is digitally controlled, providing convenient operation and streamlined process management. The equipment is particularly suitable for automated, high-precision, multi-specification, and high-volume production environments.

Parameter configuration:

Machine Structure:

The machine is mainly composed of a worktable, movable gantry, moving saddle, multiple drilling power heads, automatic lubrication system, safety protection devices, circulating cooling system, digital CNC control system, and electrical control system. Rolling linear guideway assemblies are employed for structural support and precision guidance, while precision ball screw assemblies provide reliable drive transmission, ensuring high positioning accuracy and excellent repeatability.

1. Worktable:
The machine bed and worktable are manufactured as integral gray cast iron (HT250) castings. After undergoing secondary annealing and aging treatments, the components are precision-machined to achieve excellent static and dynamic rigidity while maintaining dimensional stability and minimizing deformation. The worktable surface is precision-finished and provided with strategically arranged T-slots to facilitate secure workpiece positioning and clamping. Two high-precision linear guideway assemblies are mounted on each side of the bed base, promoting balanced load distribution across the guide slides and significantly improving the overall structural rigidity, tensile strength, and compressive strength of the machine tool. The drive mechanism utilizes AC servo motors combined with precision ball screw assemblies for dual-side synchronous operation, enabling precise gantry movement along the Y-axis. Adjustable leveling bolts are installed along the bottom of the bed, allowing convenient adjustment of the bed and worktable level as well as overall alignment.

2. Mobile Gantry:
The mobile gantry is manufactured from gray cast iron (HT250) using precision casting and machining techniques, forming a rigid and stable supporting structure. The front section of the gantry incorporates two high-load-capacity rolling linear guideway assemblies, two precision ball screw assemblies, and two servo motors, enabling accurate movement of the power-head slides along the Y-axis. Each power-head slide is equipped with an independent drilling power head. The gantry drive system utilizes servo motors connected to the ball screw assemblies through precision couplings, providing smooth power transmission, precise positioning, and stable reciprocating movement.

3. Moving Saddle:
The moving saddle is a precision-cast iron structural assembly engineered to provide reliable support and accurate positioning for the drilling head. It incorporates two high-load-capacity CNC hardened guide slides, a precision ball screw assembly, and a high-precision planetary reducer integrated with a servo motor. This arrangement enables precise Z-axis movement of the drilling head, including rapid approach, controlled feeding, rapid withdrawal, and stop functions. The system is also equipped with automatic chip-breaking, chip evacuation, and pause functions, helping optimize machining cycles and ensure dependable operating performance.

4. Drilling Power Head:
The drilling power head is powered by a dedicated three-phase spindle motor, which directly drives the precision spindle assembly. The spindle is supported by a five-row Japanese angular-contact bearing configuration, consisting of three bearings at the front and two at the rear, providing stable spindle support and allowing stepless spindle speed regulation. The feed system is driven by a servo motor in conjunction with a precision ball screw assembly, delivering precise and responsive feed motion. The X- and Y-axis systems provide coordinated linkage under semi-closed-loop control, supporting both linear interpolation and circular interpolation machining operations. An ER tool holder is installed at the spindle nose to ensure secure, accurate, and reliable tool clamping during drilling operations.