Used Sliding Head Lathe "CITIZEN L20 V"

Introduction

The CITIZEN L20 V sliding headstock lathe, year 2005, is an advanced machine designed to offer precision and flexibility in the processing of small parts. This lathe, with a Mitsubishi M700 CNC control and equipped with 5 axes plus a C axis, represents an ideal solution for complex and high precision applications. Even when used, the CITIZEN L20 V is known for its excellent performance and reliability over time.

Visual and Construction Description

• Visual Appearance : The CITIZEN L20 V has a compact and modern design, characterized by a gray metal structure and an efficient arrangement of the elements. The machine is designed to optimize space and facilitate access for operators, with a well-organized and easily readable user interface.

• Composition and Components:

  • Main Spindle : Offers great precision and power, ideal for complex machining.
  • Counter Spindle : For simultaneous operations and greater productivity.
  • C axis : Allows angular machining and increases the versatility of the machine.
  • Powered Tools : Both axially and radially orientable, for greater flexibility.

Technical Specifications

• Brand and Model : CITIZEN L20 V
• Year of Construction: 2005
• Number of Axes : 5 + C Axis
• CNC control : Mitsubishi M700

Main spindle:

• Maximum Bar Diameter : 20 mm
• Maximum turning length : 200 mm
• Spindle speed : 10,000 rpm
• Spindle power : 3.7 kW
• C-Axis Accuracy: 0.001°

Against Spindle:

• Maximum Bar Diameter : 20 mm
• Counter Spindle Speed : 8,000 rpm
• C-Axis Accuracy: 0.001°

Weight and Dimensions:

• Required Area : approximately 2,550 x 1,250 mm
• Machine weight : 3,000 kg

Mechanical Characteristics

• Main Spindle : Featuring high precision and speeds of up to 10,000 rpm, the main spindle of the CITIZEN L20 V is designed to handle complex turning operations with a power of 3.7 kW.
• Counter Spindle : With a speed of 8,000 rpm and an accuracy of 0.001°, the counter spindle contributes to effective and high-quality machining.
• C Axis : The C axis offers an accuracy of 0.001°, making angular machining possible and increasing its versatility.

Usage Procedure

1. Preparing the Machine:

   • Inspection : Check the general condition of the machine and the level of lubrication. Make sure all components are properly aligned.
   • Setup : Set the main spindle and counter spindle, adjust the rotation speed and precision of C axis through Mitsubishi M700 CNC control.

2. Preparation of the Piece:

   • Assembly : Insert the piece to be worked into the main spindle or counter spindle, depending on your needs.
   • Programming : Use the CNC to program turning operations, configuring the speed, feed and depth of cut parameters.

3. Turning operations:

   • Startup : Start the machine and monitor the process via the CNC display. Use the viewer to check the dimensions and quality of workmanship.
   • Control : Make any adjustments during the operation to maintain the precision and quality of the machined piece.

4. Conclusion of the Work:

   • Removing the Part : After machining, remove the part and inspect it to ensure it meets specifications.
   • Cleaning : Remove chips and clean the work area to keep the machine in good condition.

Matching accessories

• Bar Loader : The IEMCA Boss 332 bar loader is compatible and allows you to automate the material loading process.
• Driven Tools : The CITIZEN L20 V can be equipped with mechanically orientable axial and radially driven tools to increase the flexibility of the machine.
• Electronic Piece Ejector : With a capacity of 100 mm, to facilitate the removal of machined pieces.

Formulas for Optimal Use

• Cutting Speed ​​(Vc):

  $$V$$

  Where DD $D$ is the diameter of the piece and nn $n$ is the rotation speed in rpm.

• Progress per Minute (f):

  $$f$$

  Where VfV_f $V$ f ​is nn $n$ is the rotation speed.

• Cutting Depth (ap):

  $$a$$

Workable Materials

The CITIZEN L20 V is designed to process small materials and includes:

• Metals : Stainless steel, aluminium, brass and other light alloys.
• Plastic Materials : Polymers and resins, useful for specific applications.
• Composite Materials : Suitable for some composite materials, depending on specific characteristics.

Maintenance

• Regular Checks : Carry out periodic inspections to monitor wear and functioning of the components. Check lubrication levels and C-axis accuracy.
• Cleaning : Remove chips and debris from the lathe to prevent buildup and malfunctions.
• Lubrication : Make sure all moving parts are properly lubricated to ensure smooth, trouble-free operation.

Evaluation of Good Used

• General Condition : The used CITIZEN L20 V should be in excellent mechanical and electronic condition. Check the operation of the CNC and the precision of the axes.
• Working Hours : The machine, with less than 9000 working hours, suggests moderate use and potentially a machine in excellent condition.
• Documentation : The availability of instruction manuals and accompanying equipment is a positive indicator of good maintenance and care of the machine.

Sectors of Use

• Watch Industry : Ideal for machining small precision components.
• Medical Industry : Used for the production of complex, high-precision parts for medical devices.
• Electronics Industry : For the processing of small parts for electronic components.

Advantages of Buying Used

• Reduced Cost : The used CITIZEN L20 V offers significant savings compared to a new model, while still maintaining high performance and precision.
• Brand Reliability : CITIZEN is a trusted name in the CNC lathe industry, known for the quality and reliability of its machinery.
• Verified Performance : Purchasing a well-maintained used machine can guarantee performance comparable to that of a new model at a lower price.

In conclusion, the CITIZEN L20 V sliding headstock lathe, year 2005, represents an excellent choice for those looking for a versatile and precise machine. Even when used, its advanced features and quality construction make it