CNC Upgrade and Precision Improvement Solution for Existing Honing Equipment

Honing Machine Retrofit Application Overview

In many manufacturing plants, honing machines have been operating for years and continue to perform important production tasks.

These machines are often used for:

• Hydraulic cylinder manufacturing
• Engine cylinder machining
• Aerospace component processing
• Precision tube production
• Heavy industrial equipment manufacturing

However, after long-term operation, traditional honing machines may face problems:

• Outdated electrical control systems
• Difficult parameter adjustment
• Low machining consistency
• High dependence on skilled operators
• Limited automation capability
• Difficult spare parts replacement
• Reduced production efficiency

Replacing an entire honing machine is not always the most economical choice.

For many manufacturers, upgrading existing equipment can provide a practical solution:

• Extend machine service life
• Improve machining accuracy
• Increase production efficiency
• Reduce equipment investment
• Upgrade production capability

Liruite provides Honing Machine Retrofit Solutions based on years of CNC honing machine manufacturing experience.

We analyze existing equipment conditions and redesign key systems, including:

• CNC control system
• Servo drive system
• Feed expansion system
• Spindle drive system
• Reciprocating system
• Cooling and filtration system
• Honing tooling system

The objective is to transform traditional honing equipment into a more stable, efficient and controllable precision machining system.

Liruite specializes in CNC horizontal honing machines for hydraulic cylinders, deep holes and precision inner-hole components. Our retrofit solutions are developed from the same technologies used in our new CNC honing equipment.

Why Manufacturers Need Honing Machine Retrofit?

1. Aging Control System

Many older honing machines use:

• Relay control
• Traditional electrical cabinets
• Manual adjustment systems

Problems:

• Difficult maintenance
• Limited functions
• Lack of production data
• High downtime risk

After retrofit, Liruite upgrades the control system with:

• CNC control platform
• Touch screen interface
• Digital parameter management
• Fault diagnosis function

The upgraded system allows operators to control:

• Honing head speed
• Reciprocating speed
• Stroke position
• Feed amount
• Machining time

Liruite CNC honing machines use dedicated honing control systems with a 15-inch color touchscreen interface, real-time process monitoring and parameter management functions.

2. Declining Machining Accuracy

After years of operation, mechanical wear may cause:

• Spindle alignment deviation
• Feed system backlash
• Stroke positioning errors
• Bore quality fluctuation

Typical symptoms:

• Increasing rejection rate
• Different quality between operators
• Unstable surface roughness

Retrofit can improve:

• Feed precision
• Stroke accuracy
• Process repeatability

Liruite CNC honing technology supports:

• H6-H8 machining accuracy
• Roundness control of 0.02mm–0.04mm

Surface roughness Ra0.2–Ra0.4μm depending on workpiece material and process conditions.

3. Difficult Spare Parts Supply

Older machines may use:

• Discontinued electrical components
• Obsolete controllers
• Customized parts no longer available

This creates:

• Long maintenance time
• Higher repair cost
• Production interruption

Liruite retrofit replaces outdated components with:

• Modern servo systems
• New electrical components
• Standardized control modules

4. Increasing Production Requirements

Modern manufacturers require:

• Higher accuracy
• Faster cycle time
• Digital management
• Operator-friendly operation

A machine that was suitable 10 years ago may not meet current requirements.

Retrofit allows customers to upgrade production capability without purchasing completely new equipment.

Liruite Honing Machine Retrofit Scope

Liruite provides customized retrofit services according to machine condition.

The retrofit project may include:

1. CNC Control System Upgrade

Original:

• Relay control
• Simple PLC
• Manual operation

Upgrade:

• Dedicated honing CNC system
• Touchscreen HMI
• Parameter storage
• Automatic processing mode

Functions:

Process Parameter Management

Operators can save:

• Workpiece model
• Bore diameter
• Stroke parameters
• Feed parameters

This reduces dependence on individual experience.

Real-Time Monitoring

The system displays:

• Spindle speed
• Spindle torque
• Feed position
• Reciprocating position
• Processing status

Fault information can be displayed directly on the interface.

2. Servo Feed System Retrofit

Traditional honing machines often use:

• Mechanical expansion
• Hydraulic feed
• Manual compensation

Problems:

• Inconsistent size control
• Difficult adjustment
• Operator dependency

Liruite upgrades the feed system using:

• Servo motor
• Harmonic reducer
• Precision transmission mechanism

The automatic stone compensation system provides:

Feed resolution: 0.001mm

Benefits:

• Stable bore diameter
• Reduced adjustment time
• Better batch consistency

3. Spindle Drive Retrofit

The spindle system directly affects:

• Cutting stability
• Surface quality
• Honing efficiency

Retrofit includes:

Replacement of:

• Old motor
• Speed controller
• Transmission components

Upgrade to:

• Servo motor drive
• Digital speed control
• Stable torque output

Typical Liruite configuration:

4. Reciprocating System Upgrade

The reciprocating movement determines:

• Crosshatch angle
• Surface pattern
• Machining consistency

Old systems may suffer from:

• Uneven movement
• Position errors
• Mechanical wear

Liruite retrofit upgrades:

• Servo motor
• Linear guide rail
• Digital position control

Typical parameters:

5. Cooling and Filtration System Improvement

Honing quality depends heavily on coolant cleanliness.

Old systems may have:

• Poor filtration
• Oil contamination
• Temperature fluctuation

Liruite upgrades:

• Magnetic filtration
• Multi-stage filtration
• Oil circulation system

Typical configuration:

Benefits:

• Cleaner machining environment
• Improved surface quality
• Extended honing tool life

Liruite Retrofit Process

Step 1: Equipment Evaluation

Before retrofit, Liruite engineers inspect:

Mechanical Condition:

• Machine bed
• Spindle structure
• Guide rails
• Fixture system

Electrical Condition:

• Control cabinet
• Motors
• Sensors
• Wiring

Processing Requirement:

• Current workpieces
• Required accuracy
• Future production demand

Step 2: Retrofit Design

Based on evaluation results, Liruite prepares:

Mechanical Upgrade Plan

Including:

• Transmission improvement
• Fixture modification
• Structural reinforcement

Electrical Upgrade Plan

Including:

• CNC system
• Servo drive
• Control cabinet

Process Upgrade Plan

Including:

• Honing parameter optimization
• Tool selection
• Production testing

Step 3: Component Replacement

Main upgraded components:

CNC System

Liruite dedicated honing control system

Servo Components

• Feed servo
• Reciprocating servo

Electrical Components

Schneider electrical components

Precision Components

• Bearings
• Couplings
• Sensors

Liruite new CNC honing machines use international brand electrical components and precision components to ensure long-term reliability.

Step 4: Calibration and Testing

After retrofit:

Liruite performs:

Geometry Calibration

Check:

• Spindle alignment
• Stroke accuracy
• Fixture positioning

Processing Test

Test:

• Bore diameter
• Roundness
• Surface roughness

Production Verification

Confirm:

• Stability
• Repeatability
• Operator operation

Honing Machines Suitable for Retrofit

Hydraulic Cylinder Honing Machine Retrofit

Applications:

• Hydraulic cylinder factories
• Engineering machinery suppliers

Upgrade targets:

• Better size control
• Higher production efficiency

Typical machining capability after upgrade:

Engine Honing Machine Retrofit

Applications:

• Diesel engine factories
• Automotive engine repair plants

Upgrade focus:

• Surface quality
• Process repeatability
• Automatic control

Deep Hole Honing Machine Retrofit

Applications:

• Long hydraulic tubes
• Industrial deep holes

Typical capability:

Large Bore Honing Machine Retrofit

Applications:

• Mining cylinders
• Hydraulic presses
• Heavy industrial components

Possible upgrade:

• Larger tooling
• Stronger fixture
• Improved feed control

Liruite large bore honing solutions support customized processing up to Φ1600mm according to equipment configuration.

Benefits of Liruite Honing Machine Retrofit Solution

Reduce Investment Cost

Compared with purchasing a new machine:

Retrofit can reduce:

• Equipment investment
• Installation time
• Operator training cost

Extend Equipment Lifetime

A successful retrofit can extend the useful life of existing equipment by upgrading:

• Control system
• Servo system
• Electrical components

Improve Machining Accuracy

After retrofit:

Manufacturers can achieve:

• More stable dimensions
• Better surface finish
• Reduced rejection rate

Improve Production Management

Digital control provides:

• Parameter storage
• Process monitoring
• Fault diagnosis

Why Choose Liruite Retrofit Solution?

1. Honing Machine Manufacturing Experience

Liruite has more than 15 years of experience in honing machine research and manufacturing.

• The company focuses on:
• CNC horizontal honing machines
• Deep hole honing equipment
• Hydraulic cylinder honing solutions

2. Retrofit Based on Original Technology

Unlike general machine repair companies, Liruite understands:

• Honing process
• Honing tool behavior
• Surface formation mechanism

The retrofit design is based on actual honing machine development experience.

3. Customized Upgrade Solutions

Every existing machine has different conditions.

Liruite provides:

• Partial retrofit
• Complete CNC upgrade
• Process improvement
• Production line integration

4. Professional Technical Support

Support includes:

• Equipment evaluation
• Retrofit design
• Installation
• Debugging
• Operator training

FAQ

Liruite Honing Machine Retrofit Solution

For manufacturers operating existing honing equipment, upgrading is often a practical way to improve production capability without replacing the entire machine.

Liruite combines honing machine manufacturing experience, CNC control technology and precision machining knowledge to provide retrofit solutions for hydraulic cylinder manufacturers, engine producers, aerospace suppliers and heavy industrial enterprises.

From control system replacement to complete machine modernization, Liruite evaluates each project according to the customer's equipment condition and machining requirements, helping factories achieve improved accuracy, higher efficiency and more reliable production performance.