CNC Bottle Boring Machine

Machine Overview

CNC Bottle boring Machine – Precision, Power, Flexibility

This CNC Bottle boring Machine is specifically designed for boring deep cavity holes in complex workpieces. It also performs straight-hole drilling and boring operations. With three machining modes, dual 37kW servo spindles, and Siemens 828D CNC control, it delivers exceptional performance for aerospace, energy, heavy machinery, and hydraulic applications.

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Key Specifications

Parameter	Value
Drilling range	Φ25 – Φ120 mm
Boring range	Φ40 – Φ250 mm
Max. processing depth	3000 mm
Control system	Siemens 828D
Z-axis feed force	60 kN
Spindle motor power (drill box)	37 kW
Spindle motor power (headstock)	37 kW
Chuck diameter	Φ400 mm
Coolant max pressure	2.5 MPa
Coolant max flow	400 L/min
Oil tank volume	4300 L
Machine floor size	12m × 3.3m
Machine load capacity	3 tons

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Three Machining Methods – One Versatile Machine

Workpiece fixed, tool rotating and feeding

Workpiece rotating, tool stationary and feeding

Workpiece rotating, tool rotating and feeding

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CNC Bottle boring Machine – X/Z Two-Axis Interpolation

During deep cavity hole machining, the CNC system controls X-axis movement (tool expansion/contraction) and Z-axis movement simultaneously for two-axis interpolation. The tool is guided by the workpiece's pilot hole, and the entire tool retracts along Z-axis while the cutter head moves along X-axis – achieving precise cavity geometry.

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Machine Composition

Bed, headstock, oil pressure head, drill bar support rest, drill box, sliding guide rails, ball screws, coolant system, control system, electrical cabinet, workpiece carrier, and cavity hole machining device.

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Main Components & Features

Machine Bed

Resin sand casting, normalized after casting

Split structure with high-strength bolts and taper pins

Double rectangular guideways, precision ground, quenched

Ball screws and scales for closed-loop Z-axis control

V-shaped diagonal ribs for high strength and deformation resistance

Oil return groove cast into bed periphery

Headstock

Fixed at bed left end; drives workpiece rotation

37 kW servo spindle motor, belt and gearbox drive

Manual 3-speed, stepless in each gear

Φ400 mm manual four-jaw chuck

Precision ground, high-frequency quenched gears

External lubricating oil tank with low level alarm

Manual spindle lock with detection switch

Oil Pressure Head

Tool guidance, oil supply, and tool bar support

Servo motor-driven axial movement for clamping

High-rigidity slewing bearing

Cone disk and guide sleeve for clamping and guidance

Oil stop device with push-pull structure

Drill Box

Drives tool rotation; mounted on feed pallet

37 kW servo spindle motor

Belt, pulley, and gear system drive

Chip conveyor at spindle right end

Precision ground, high-frequency quenched gears

Drill Bar Support Rest

High-rigidity monolithic structure

Support sleeve absorbs impact and vibration

Automatic hanging and pulling mechanism

Coolant System

Above-ground oil tank – no pit excavation

Automatic chip conveyor

Paper belt filtration

3 pump groups: two at 2.5 MPa / 100 L/min; one at 1.0 MPa / 200 L/min

Digital display for pressure, level, temperature, flow

Feed Bracket

Drives axial tool movement

Automatic lubrication station for guideways

Push-button control panel

Lubrication System

Feed pallet: automatic lubrication station with level alarm

Headstock: independent external oil tank circulation

Drill box: independent external oil tank circulation

Oil pressure head & support rest: manual lubrication pump

Workpiece Carrier

Pre-positioning of workpieces

V-frame raised/lowered manually via T-screw

Center Frame

Three-point closed center frame

Two lower rollers + one upper roller

Lateral adjustment via screw

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Why Choose This Machine?

✅ Three machining modes – maximum flexibility

✅ X/Z two-axis interpolation – precise cavity holes

✅ Siemens 828D – reliable, user-friendly control

✅ Dual 37 kW servo spindles – high torque, wide speed range

✅ Double aging treatment – long-term stability

✅ Quenched double rectangular guideways – wear resistance

✅ 400 L/min coolant flow – efficient chip removal

✅ Above-ground oil tank – easy maintenance

✅ Paper belt filtration – clean cutting oil

✅ 60 kN Z-axis feed force – heavy cutting capacity

✅ 3-ton load capacity – handles large workpieces

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Typical Applications

Aerospace structural components with cavity bores

Turbine housings and valve bodies

Large hydraulic cylinders and actuators

Deep cavity and irregular bore components

Energy sector parts

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