Machine brief instruction:     

 The entire machine tool consists of major components such as the bed, headstock, carriage, tool post, boring bar device, tailstock, chuck, cooling system, hydraulic system, protective cover, and electrical system.

     CTK61100/125/140L is a horizontal flat-bed CNC turning and boring lathe, controlled by the SIEMENS 828D CNC system.

    The machine bed features  is V+flat guide rail,one more 45 degree auxiliary guide rail on the side of the mahine bed, with medium-frequency hardened guide rail surfaces. The headstock adopts a hydraulic four-speed gearbox. The tool post is equipped with a four-station electric turret. The tailstock has a split upper-lower structure and it is fitted with a semi-enclosed protective device. Both longitudinal and transverse transmissions utilize ball screw pairs. The main motor is driven by an AC servo motor.

  Machine mainly parameters:

Turnning and boring lathe mainly structure:

Machine bed:

The machine bed is a floor-mounted structure with a width of 755 mm, made of high-strength resin sand-cast HT300 material. It features a "one V, one flat + 45° auxiliary guideway" design with deep medium-frequency hardening for secondary regrinding. Internal "W"-shaped ribs enhance rigidity and reduce deformation. The bed includes a rear chip evacuation slope and arched doors for easy chip and coolant removal.

Headstock：

The headstock is a monolithic structure directly mounted on the bed, offering high cutting rigidity and precision stability.

The spindle adopts a three-point support system,The front end serves as the fixed support, while the middle and rear ends act as floating supports.

• The primary load-bearing points are at the front and rear, with the middle providing auxiliary support.Axial positioning is set at the front end, allowing the spindle to expand rearward when heated, effectively eliminating the impact of thermal elongation on machining accuracy.

The main drive of the headstock is powered by an EMG servo motor with a hydraulic four-speed gearbox, ensuring superior spindle rigidity, load capacity, smooth rotation, and high precision.

Lubrication system: The headstock uses a high-pressure oil lubrication system, with a dedicated oil pump to lubricate gears and bearings while reducing temperature. The spindle front end features a dual-seal structure (labyrinth + gear groove) to prevent oil leakage and foreign particle ingress.

Carriage,tool post 

The carriage is designed for heavy-duty turning and boring. 

The machine is driven by servo motors, with both X and Z axes utilizing ball screw assemblies for transmission. The X-axis ball screw measures φ50×10 in diameter, while the Z-axis ball screw measures φ80×20. Both ends of the ball screws are supported by angular contact ball bearing sets with large contact angles, adopting a "fixed-tension" support method to enhance the motion rigidity and operational accuracy of the screw systems.

The tool post is equipped with a vertical four-station turret, featuring flexible indexing, reliable positioning, and convenient operation. 

Tailstock:

The tailstock center of this machine features a fixed structure, with manual extension/retraction of the tailstock sleeve.

The tailstock adopts a carriage-towing movement method.

To prevent slippage between the tailstock and bed during workpiece support, an anti-retraction rod is installed on the tailstock.

The tailstock center employs a heavy-duty rotating center.

Cooling System
The machine is equipped with a complete cooling system to cool both workpieces and tools, protecting workpieces and extending tool life.

Dual Sliding Doors, Semi-Enclosed Protection
The machine can be configured with dual sliding doors and semi-enclosed protection. The control panel is a separate movable unit that can freely move along the bed without interfering with the doors. The control panel can also be rotated for real-time observation during operation.

Automatic Chip Conveyor and Cooling System

The machine can be equipped with a chain-type automatic chip conveyor, which integrates a water tank and cooling pump. The conveyor is installed at the rear of the machine. The cooling pump delivers coolant to the tool post through piping. Used coolant flows back into the conveyor through the chip discharge port on the bed, settles, and is recycled into the water tank.

Machine Accuracy:
This machine complies with the GB/T 23569-2009 standard "Testing Conditions for Heavy-Duty Horizontal Lathes—Accuracy Testing."

Machine Tool Electrical System:

1. CNC System Name: SIEMENS 828D

2.CNC System Configuration:

•  Controls X and Z axes, enabling 2-axis interpolation.

• Equipped with a color display supporting Chinese/English language switching.

• Includes a control panel.

• Supports user program input/output.

3.CNC System Functions:

• Linear interpolation and circular interpolation.

• Pitch error compensation and backlash compensation.

• Tool compensation.

• Metric/imperial unit conversion.

• Absolute or incremental programming.

• Diameter or radius programming.

• Thread cutting function.

• Standard cycle functions.

• Feed rate can be set in mm/min or mm/rev

• Program call function.

• Program management (search, add, delete, copy, etc.).

(Note: Technical terms are translated according to SIEMENS official documentation standards.) 

Boring Tool Holder Unit (Optional)

This machine can be equipped with a boring device for machining internal holes of workpieces. The boring device is mounted on a specially widened and reinforced slide. To enhance rigidity, the rear section of the boring bar is supported by linear guides installed on the carriage. Additionally, counterweights are added to the rear of the boring bar based on machining requirements to ensure precision. The boring bar features an internal coolant pipe for cooling the cutting tool.

*(Note: Technical terms are translated following ISO 1219-1 standards for fluid power systems and machining terminology.)*

Center Rest (Optional)

To meet workpiece machining requirements, the machine can be optionally equipped with:

• Roller-type center rests

• 

• Support rollers

(Note: This configuration provides auxiliary support for long shaft machining while maintaining rotational freedom)