TK2125 CNC Deep Hole Drilling And Boring Machine (TK2125 CNC )

The TK2125A Deep Hole Drilling and Boring Machine is a new-generation machine tool developed by Dezhou Guanghe Machine Tool Co., Ltd. based on market demand. It is designed to provide high efficiency, precision, and reliability for deep hole drilling, boring, and related machining applications.

1. Intelligent Human-Machine Interface
   • Simple operation with an intuitive human-machine interaction system.
   • High level of automation and intelligent control.
2. Wide Machining Capability
   • Suitable for drilling, expanding, blind holes, step holes, nesting, and boring operations.
   • Supports both combination tools and single-process tools, including rough boring, finish boring, and roller burnishing.
   • Maximum boring diameter: Ø250 mm
   • Maximum drilling diameter: Ø100 mm
3. Advanced Engineering Design
   • Designed using Dassault Systèmes software from France.
   • Offers improved usability and advanced engineering compared with conventional machine tools.
4. High Economic Efficiency
   • Delivers excellent production efficiency.
   • Requires lower investment and occupies less factory floor space.
5. Excellent Versatility
   • High compatibility with drilling rods, cutting tools, and accessories.
   • Components and tooling can be interchanged with previous-generation products, reducing tooling costs and simplifying maintenance.

The TK2125A features a rigid machine structure designed for high-precision deep hole drilling and boring applications. Its robust construction ensures excellent stability, machining accuracy, and long-term reliability under continuous heavy-duty operation.

1. Bed Frame

The machine bed is manufactured from high-quality cast iron and consists of two connected bed sections. It features a double-sided enclosed rib structure that provides excellent rigidity and vibration resistance. The rectangular guideways offer high load-bearing capacity and precise linear guidance, while the hardened and quenched guide rails ensure outstanding wear resistance and extended service life.

Oil supply pipes and feed screws are installed along the center of the bed to provide smooth and reliable machine movement. Protective covers are fitted on all sides of the bed to prevent coolant splashing, improve operator safety, and maintain a clean working environment.

2. Headstock & Chuck

The headstock utilizes a gear transmission system that allows spindle speed adjustment through a front-mounted operating mechanism. The spindle is supported by high-precision double-row cylindrical roller bearings and bi-directional thrust ball bearings, providing excellent radial and axial rigidity for stable machining performance.

An integrated circulating lubrication system continuously supplies oil to the gears and bearings, ensuring reliable cooling and long service life. The spindle is equipped with a chuck body featuring a large through-hole, allowing convenient loading and unloading of long workpieces while improving chip evacuation and coolant flow during machining.

The workholding and feed system is designed to provide stable workpiece support, accurate tool guidance, and smooth axial movement during deep hole drilling and boring operations. Its robust design ensures high machining precision, reliable feeding performance, and easy adjustment for different workpiece sizes.

3. Drag Board (Drilling & Boring Bar Bracket)

The drilling and boring bar fixing bracket is mounted on the drag board and connected to the drilling or boring bar through a locking sleeve. The locking sleeve is manufactured according to the outside diameter of the drilling or boring bar to ensure secure positioning and accurate guidance.

During machining, the feed system drives the lead screw, moving the drag board smoothly along the machine bed. This design provides stable feeding, precise positioning, and rapid traverse movement when required.

4. Workpiece Bracket

The workpiece bracket is designed to support long workpieces during setup and machining preparation. The bracket configuration can be selected according to the dimensions and support requirements of the workpiece, improving overall machining stability.

5. Oil Dispenser

The oil dispenser supplies coolant directly to the machining area while providing sealing and support for the workpiece. It also supports the drilling and boring bar and provides accurate guidance for the drilling head throughout the machining process.

Coolant is delivered from the cooling pump through the oil feeder into the cutting zone. The front of the oil feeder is equipped with interchangeable conical support discs available in different angles to match various workpiece configurations. The oil feeder movement is hydraulically driven, ensuring smooth positioning and reliable locking.

A replaceable guide sleeve is installed inside the cone disc to guide the drill or boring head accurately. The rear cone sleeve supports the drilling and boring bar and can be adjusted when wear occurs. The oil feeder also incorporates the machine's primary control panel, allowing convenient operation of all major machine functions.

The support systems are designed to ensure stable boring bar guidance, efficient coolant circulation, and reliable chip removal throughout the machining process. These systems improve machining accuracy, extend tool life, and maintain consistent performance during continuous operation.

6. Drilling & Boring Bar Bracket

The drilling and boring bar bracket provides additional support for the drilling and boring bar during machining. It travels along the machine bed guideways and is driven by a chain transmission system to maintain accurate alignment and reduce vibration.

Different support sleeves can be installed according to the diameter of the drilling or boring bar, ensuring optimum rigidity and machining stability for various applications.

7. Cooling System

The cooling system is positioned behind the machine and consists of an oil tank, pump station, piping system, and chip collection unit. It performs two essential functions: cooling the cutting area and transporting chips away from the machining zone.

During boring operations, coolant is delivered through the oil feeder directly to the cutting area and returns together with the chips to the chip hopper before being filtered and recirculated to the oil tank.

During drilling operations, coolant flows through the oil feeder into the cutting zone, while chips are discharged through the inside of the drilling bar and collected by the chip handling system. The filtered coolant is continuously recycled, providing efficient cooling, effective chip evacuation, and reduced coolant consumption.

Any residual coolant returning to the machine bed is collected and routed back to the oil tank, maintaining a clean working environment and ensuring continuous coolant circulation throughout the machining process.

Proper handling and transportation are essential to protect the machine and maintain its precision. During lifting and relocation, appropriate lifting points and balanced load distribution should always be used to ensure safe transportation and prevent structural damage.

The lifting hooks or slings must be attached only to the designated lifting holes on the machine bed or to a lifting bar installed through the lifting holes. If lifting equipment comes into contact with the guideways or other precision components, suitable protective pads or spacers should be used to prevent scratches and surface damage.

Before lifting, verify that the machine weight is evenly distributed and that all components are securely positioned. The machine should remain balanced throughout the entire lifting process and must not be subjected to excessive tilting, impact, or sudden movement to avoid damage to the machine structure and precision assemblies.

Proper operation and routine maintenance are essential for ensuring long-term machine accuracy, reliability, and service life. Following the recommended operating procedures helps maximize performance while minimizing wear and unexpected downtime.

When the machine is temporarily out of service or during extended shutdown periods, it should be covered to protect it from dust and contaminants. If the machine will remain unused for a prolonged period, all exposed machined surfaces and moving parts should be coated with anti-rust oil. Before restarting the machine, the protective oil should be completely removed using a suitable cleaning agent.

Before operation, the operator should become familiar with all machine functions, controls, and safety procedures. Electrical connections and fastening components should be inspected before switching on the machine. The machine should initially run in idle mode to verify smooth movement and confirm that the lubrication and coolant systems are operating correctly.

During initial startup, all moving components should be accelerated gradually from low speed to the required operating speed. Headstock speed changes must be carried out according to the specified operating positions and only after the spindle has completely stopped to ensure safe operation.

The coolant flow rate should be selected according to the machining application. Higher coolant flow is recommended for large-diameter hole machining, while lower flow rates are suitable for smaller holes, ensuring effective cooling, chip evacuation, and machining efficiency.