Horizontal CNC Boring Milling Machine

The horizontal CNC boring milling machine features a typical "inverted T-type" moving-column structure, characterized by a cross-bed and planer-table layout. The design philosophy integrates the spindle head directly into the column, utilizing a front-mounted "box-within-a-box" configuration. Its key characteristics include high structural rigidity, symmetrical construction, rapid dynamic response, exceptional precision, and excellent stability. High-precision linear scales are available as an option to enable full closed-loop control. The spindle head employs a hydraulic-nitrogen balancing mechanism; the machine also features automatic chip removal and is equipped with a tool-and-workpiece cooling system.

This horizontal CNC boring milling machine is ideally suited for the high-efficiency, high-precision continuous processing of medium-to-large-sized, heavy base components, as well as plate-like, disc-shaped, box-type, and mold-related parts-performing a variety of operations including milling, drilling, boring, and reaming. It is widely utilized across diverse sectors such as aerospace, shipbuilding, wind power, textile machinery, petroleum machinery, coal mining machinery, and construction machinery.

Ⅰ：Basic bulk

1：All the basic parts of the machine tool are made of high-quality gray cast iron and cast with resin sand technology. According to the dynamic analysis, the reinforcement is arranged reasonably, so as to ensure its good anti-torsion and anti-bending ability, and has good accuracy and stability.

2：The basic large parts are subjected to secondary tempering treatment before processing to eliminate stress. The guide rail adopts imported linear roller guide rail to ensure the rigidity and precision stability of the machine tool.

Ⅱ：Bed

Both the front bed and the transverse bed of the machine tool are integrally cast, adopting an arch bridge type high rigid structure, and the overall layout is a typical "inverted T" structure, which has good precision and stability.

Ⅲ：Workbench

The working table adopts special bearings for three-sided thrust centripetal turntable, which greatly improves the bearing capacity and precision. It can realize positioning at any angle, with high indexing precision, which can ensure the coaxiality of the U-turn boring. Linkage interpolation motion can be realized with other feed axes.

Ⅳ：Column

1：The large column adopts the latest foreign technology design, the large-size double-layer closed back-type wall column structure, and the layout of the front-hanging spindle box ensures that the force of the machine tool is more reasonable, and it will not cause the distortion of the column like the side-hanging offset spindle. The super-large cross-section column ensures stable machining at the end of the machine tool's up and down stroke. The column is subjected to multiple aging treatments to maximize the rigidity of the large foundation.

2：The guide rail of the column adopts imported guide rail, which is wear-resistant, pressure-resistant and stable.

3：The column is equipped with a set of hydraulic nitrogen balance system, which can make the up and down movement of the headstock fast in response, stable in movement, accurate and reliable.

Ⅴ：Spindle box

The main shaft bearing adopts imported well-known brand angular contact ball bearings. The tool installation adopts disc spring clamping and hydraulic release structure. Between the main shaft motor and the main shaft, a two-speed gearbox (cooled by a constant temperature oil tank) is used. The main shaft motor and the two-speed gearbox are directly connected. Then, the power is transmitted to the main shaft through the gear. The maximum efficiency of the main shaft motor is fully utilized to ensure high torque output at low gears, which is suitable for heavy cutting.

Ⅵ：Automatic lubrication and tool cooling

1：The lubrication of this machine tool is divided into three parts:

• Lubrication in two-speed gearbox and headstock;
• Lubrication of each guide rail pair and lead screw pair of the machine tool;
• Lubrication of each screw support and other rolling bearings.

2：The lubrication in the main shaft bearing, the reducer and the main shaft box is absorbed by the constant temperature oil tank. After cooling, it enters the oil separator on the top surface of the main shaft box through the oil outlet pipe of the constant temperature oil tank, and sprays oil through the oil pipe on the oil separator. Bearings and gears inside the headstock. Finally, the lubricating oil is recovered to the oil box on the rear side connected to the main shaft housing, and then filtered through the oil filter net and then returned to the constant temperature oil tank to form circulating cooling and lubrication.

3：Each guide rail pair and lead screw pair of the machine tool is supplied with oil by a special automatic lubrication pump station, and is lubricated by a quantitative distributor installed near each lubrication point. The lubricating interval time and oil supply volume have been adjusted when the machine tool leaves the factory.

4：The coolant tank is placed on the side of the machine bed and integrated with the chip removal device for external cooling of the tool and the workpiece. In order to prevent iron filings from splashing, a coolant recovery device is added around the workbench.

Ⅶ：Fully Closed-Loop Control System

The X, Y, Z, and B axes can be optionally equipped with high-precision linear scales for full closed-loop control, ensuring the machine tool's precision.