DLZ-600 Inverted CNC Deep Hole Drilling Machine

Technical Proposal | High-Precision Gun Drilling Solution

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1. Application Overview

The DLZ-600 precision CNC deep hole drilling machine is designed for high-accuracy deep hole machining across multiple industries. It is widely used for processing complex deep holes in cylindrical and structural components.

Typical Applications

Mold Industry: cooling channels, ejector pin holes, hot runner systems, guide pillar holes

Automotive Industry: cylinder heads, crankshafts, connecting rods, hydraulic pipelines, steering racks, valve spools

Textile Machinery: spindle internal bore drilling

Medical Equipment: titanium alloy and stainless steel shaft components

Mining & Oil Machinery: piston rods, hydraulic support cylinders, cylinder liners

Power & Turbine Industry: rotors, mandrels, valve stems, condenser tube sheets, turbine casings

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2. Machine Overview

2.1 Machining Capacity

Drilling diameter range: Φ4 – Φ40 mm

Maximum drilling depth: 600 mm

Maximum workpiece length: 600 mm

Key Structural Features

Gun drilling (single-lip deep hole drilling) system

Dual-spindle design enables simultaneous machining of two workpieces, ideal for coaxial hole processing

Tool rotates with controlled feed during machining process

Workpiece clamping system uses hydraulic axial movement with conical self-centering clamping mechanism

Linear guideways ensure high precision and stability

CNC control system: Siemens 828D

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3. DLZ-600 Technical Specifications

Machine Parameters

No.	Item	Specification
1	Drilling diameter	Φ4 – Φ40 mm
2	Max drilling depth	600 mm
3	Machine weight	6 tons
4	Machine size	2800 × 2500 × 3200 mm
5	Spindle speed range	10 – 4000 rpm (stepless)
6	Feed speed range	0 – 300 mm/min
7	Rapid traverse	3000 mm/min
8	Spindle motor power	11 kW × 2
9	Z-axis servo motor	4.4 kW
10	Hydraulic pump motor	1.5 kW
11	High/low pressure pump	7.5 kW × 2
12	Max pump pressure	21 MPa
13	Max flow rate	60 L/min
14	Chip conveyor power	750 W
15	Total power	32 kW
16	Coolant tank capacity	800 L
17	Spindle count	2
18	Hole accuracy	IT8 – IT11
19	Surface roughness	Ra (deep hole finishing grade)
20	Hole straightness	0.3 / 500 mm
21	Spindle runout	0.005 mm
22	Filtration accuracy	20 μm
23	Rotary coolant joint	Silicon carbide wear-resistant high-speed rotary union (anti-leakage)
24	Power supply	380V ±10%, 50Hz ±2%, 3-phase
25	Air pressure	0.5 – 0.6 MPa
26	Working temperature	0 – 40°C
27	Humidity	<75%

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4. Standard Configuration

Control & Electrical System

Siemens PLC control system

Independent rotary operator control panel

Schneider electrical components (contactors & relays)

Taiwan Mean Well 24V power supply

Hydraulic & Lubrication System

Variable-frequency hydraulic control system

Multi-stage filtration hydraulic station

Industrial oil cooling system with temperature control

Automatic lubrication system for lead screws and guideways

Cooling & Chip Removal System

High-efficiency chain-type chip conveyor

Advanced oil filtration and chip separation system

Fully automatic chip discharge into collection box

Mechanical Structure

Heavy-duty resin sand cast machine body (Grade 300)

High-frequency hardened worktable

Fully enclosed protective cover with oil-proof design

Vibration-resistant support structure

Quick-change tool support system

Key Components (Brand Configuration)

High/low pressure oil pump: Japan Shimadzu

Spindle motor: Shanghai Mesc

Feed servo motor: Wuhan Maxsine (with brake)

Ball screw: Nanjing Technology D50/10

Pneumatic system: Airtac

Contactors: Schneider

Electrical relays: Schneider

Bearings: Domestic high-quality brand

Hydraulic control system: Wuxi Xinjie

LED working lights: oil-proof explosion-resistant type

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5. Installation & Commissioning

Installation and commissioning are carried out at the buyer's facility under the guidance of our technical engineers.

Responsibilities

Seller provides full technical documentation and manuals

Seller dispatches engineers for installation and commissioning

Buyer prepares installation site, operators, and test workpieces

Buyer is responsible for unloading and machine positioning

Joint final acceptance after commissioning

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6. Machine Acceptance

Acceptance is divided into two stages:

6.1 Pre-acceptance (Factory Inspection)

Conducted at the manufacturer's site. If buyer cannot attend, a factory inspection certificate is provided.

6.2 Final Acceptance (On-site)

Includes:

Appearance inspection – no major scratches or coolant leakage

Specification verification – according to technical agreement

Dynamic test – continuous idle running for 4 hours

Precision test conditions:

Material: alloy steel (HRC 28–32)

Workpiece: round bar, length 500 mm

Hole diameter: Φ20 mm

Hole depth: 500 mm

Must meet agreed machining accuracy standards

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7. Training & After-Sales Service

We provide comprehensive technical training including:

Operation training

CNC programming training

Maintenance and troubleshooting training

After-Sales Support

1-year free warranty after final acceptance

Lifetime technical consultation support

24-hour response for equipment failure

On-site engineer support within 24 hours (subject to location)

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Contact: Lilian Lee
Whatsapp: +8619819312517
Email: drilling@dzguanlu.com

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