1.Schematic Outline of Machine Tool

2.Machine Tool Overview

2.1 Machining Range

Drilling Range: Φ19～Φ122mm

Boring Range: Φ40～Φ200mm

Workpiece Outer Diameter Range: Φ60～Φ400mm

2.2 Machine Tool Functions

Machining Modes:

Workpiece rotates, tool stays stationary, tool feeds.

Workpiece rotates, tool rotates, tool feeds.

Drilling: Adopt BTA drilling method. Cutting oil is supplied to the tool through the gap between the oil feeder, the tool bar and the hole wall, and carries the chips out through the inner hole of the tool bar.

Boring: Cutting oil is supplied to the tool through the gap between the oil feeder, the tool bar and the hole wall, carrying chips out via the bottom hole of the workpiece. During machining, the tool moves towards the headstock.

2.3 Main Structure of the Machine Tool

2.3.1 Main Components of the Machine Tool

Bed, headstock, oil feeder, tool bar support, drill box, slide guideway, rack and pinion, cooling system, control system, electrical cabinet, workpiece rest, etc.

2.3.2 Workpiece Clamping

A manual three-jaw chuck mounted on the headstock clamps one end of the workpiece, and the taper disc of the oil feeder automatically pushes against the other end of the workpiece.

2.3.3 Machine Tool Control System

Control System: SIEMENS-PLC Z-axis: Longitudinal feed motion of the drill box. The servo motor drives the rack-and-pinion mechanism via a reduction unit. X-axis: Servo tightening of the workpiece by the oil feeder. The servo motor drives the rack-and-pinion mechanism via a reduction unit.

2.3.4

Basic components such as boxes, bed and pallet are made of high-quality cast iron by precision casting. After casting, they undergo two aging treatments to eliminate internal stress, stabilize structure and dimensions, and improve mechanical properties.

2.3.5 Machine Bed

The machine bed is produced by resin sand casting and normalized after casting. It adopts a split structure, assembled with high-strength bolts and positioned by taper pins. Double rectangular slide guideways are used with precision grinding, and the guideway surfaces feature high hardness after quenching. An inclined rack is fitted inside the bed for tool feed transmission. The rack is precision-machined and quenched. The machine features heavy load capacity, high rigidity and stable transmission. V-shaped inclined ribs are arranged inside the bed to provide strong support and resist deformation. The outer wall of the bed directly supports the guideways, enabling the guideways to withstand heavy cutting forces with high rigidity. No obvious deformation or vibration occurs during machining, helping improve the machining quality and efficiency of the machine tool. Oil return grooves are cast around the bed, with oil shields mounted on the grooves. Cutting oil on the bed automatically flows back to the cooling oil tank.

2.3.6 Headstock

It is used to drive workpiece rotation and fixed at the left end of the machine bed. It has 3 manual gear ranges with stepless speed regulation within each range. A servo spindle motor drives spindle rotation through belts and a gearbox. A manual three-jaw chuck is installed at the front end of the headstock for workpiece clamping. Gears are manufactured by precision grinding; gear tooth surfaces are treated by high-frequency quenching. This endows gears with high strength, high hardness, good wear resistance and high fatigue limit, allowing them to withstand relatively large alternating loads and impact loads. An external lubricating oil tank provides circulating lubrication for gears and bearings, and a low-level alarm device is installed inside the oil tank. A button panel is mounted on the headstock housing, with functions including spindle jog, feed forward, feed backward and emergency stop.

2.3.7 Oil Feeder

It is used for tool guiding, tool oil supply and tool bar support.

Driven by a servo motor for axial movement, it can adapt to machining workpieces of different lengths, as well as tightening and releasing workpieces. The servo motor can operate in torque mode or position mode.

The rotary bearing of the oil feeder is installed inside the oil feeder body, featuring high rigidity and high rotating accuracy.

The rotary seal is mounted externally on the right end of the oil feeder body for easy maintenance.

A tool bar support sleeve is fitted at the right end of the oil feeder to support the tool bar.

A guide sleeve, taper disc and oil retaining device are installed at the left end of the oil feeder. The taper disc is for workpiece positioning, and the guide sleeve serves for tool guidance.

The oil retaining device adopts a push-pull structure. An oil collecting box is mounted at the bottom of the oil retaining device to channel cutting oil back to the oil tank.

2.3.8 Drill Box

It is used to drive tool rotation and is mounted on the feed pallet.

It has 3 manual gear ranges with stepless speed regulation within each range. A servo spindle motor drives spindle rotation via belts, pulleys and gear trains.

A tool shank adapter is fitted on the left end of the spindle for tool clamping.

A chip discharge hopper is installed at the right end of the spindle for chip removal.

Gears are precision ground; gear tooth surfaces are treated by high-frequency quenching. This gives the gears high strength, high hardness, good wear resistance and high fatigue limit, enabling them to withstand relatively large alternating loads and impact loads.

An external lubricating oil tank provides circulating lubrication for gears and bearings, and a low-level alarm device is installed inside the oil tank.

2.3.9 Tool Bar Support

It is used to support the tool bar.

It adopts a high-rigidity monolithic structure fitted with support sleeves, which can absorb shocks, vibrations and other disturbances generated during machining.

An automatic pull-hook mechanism is installed. During tool retraction, the feed pallet can automatically pull the tool bar support back to its home position.

3.Main Parameters of Machine Tool

Technical Specifications

Working Range

Drilling Range: Φ19～Φ122mm

Boring Range: Φ40～Φ200mm

Maximum Machining Depth: 5000mm

Workpiece Length Range: 500–5000mm

Workpiece Outer Diameter Range: Φ60～Φ400mm

Machine Tool Performance

Z-axis (Drill Box Feed) Feed Speed Range: 5～1000mm/min

Rapid Traverse Speed: 2000mm/min

Servo Motor Torque / Power: 22Nm / 3.5kW

Maximum Feed Force: 60kN

X-axis (Oil Feeder Movement) Rapid Traverse Speed: 2000mm/min

Servo Motor Torque / Power: 22Nm / 3.5kW

Maximum Tightening Force: 60kN

Drill Box Speed Range: 30～1000r/min

Motor Power: 45kW, Servo Spindle Motor

Gear Ranges: 3 manual gear ranges with stepless speed regulation within each range

Spindle Through-hole: Φ75mm

Spindle Front Taper Hole: Metric 85

Headstock Speed Range: 30～1000r/min

Motor Power: 45kW, Servo Spindle Motor

Gear Ranges: 3 manual gear ranges with stepless speed regulation within each range

Chuck Outer Diameter: Φ400mm, Manual 3-jaw Chuck

Spindle Through-hole: Φ75mm

Spindle Front Taper Hole: Metric 85

Others

Total Machine Power: 135kW

Guideway Width: 600mm

Machine Load Capacity: 3 tons

Machine Footprint: 16m × 3.3m

Height from Spindle Center to Top Surface of Guideway: 400mm

Cooling System Maximum Pressure: 5MPa

Maximum Flow Rate: 400L/min

Tank Volume: Approx. 8000L

4.Other Machine

5. Contact Me

Email:sale@dzgaunlu.com

Whatsapp:+8613853423246

Hot Tags: tsk2120a*5m cnc deep hole drilling and boring machine, China, suppliers, manufacturers, factory, customized, price, cheap, company, cost, for sale