CHINA CNC Deep Hole Drilling And Boring Machine For Plastic Extrudor

CNC Deep hole drilling and boring machine  overview

2.1 Machine tool processing scope

Drilling range: Φ25 ~ Φ100mm

Boring range: (Φ40 ~ Φ200mm)

Workpiece outer diameter range: Φ60 ~ Φ400mm

 

2.2 CNC Deep hole drilling machine tool functions

Drilling, boring functions.

Drilling: BTA drilling method, chips are removed backward through the tool bar.

Boring: Push boring method, which discharges chips forward through the bottom hole of the workpiece.

 

2.3 CNC deep hole drilling and boring machine structure

2.3. 1 Main components of machine tools

Bed body, bedside box, oil feeder, tool bar bracket, drill pipe box, sliding guide rail, gear rack and pinion, cooling system, control system, electric box, workpiece bracket, etc.

2.3. 2 Workpiece clamping

The manual three-jaw chuck on the bedside box clamps one end of the workpiece, and the oil feeder cone plate automatically tightens the other end of the workpiece.

Workpiece clamping diagram

 

1.3. 3 Machine tool control system

Control system: PLC

Z-axis: the longitudinal feed motion of the drilling box, and the servo motor drives the rack and pinion mechanism through the reduction mechanism.

X axis: The oil pressure head servo tightens the workpiece, and the servo motor drives the rack and pinion mechanism through the reduction mechanism.

1.3. 4 The basic parts such as box, bed, and carriage are precision cast of high-quality cast iron. After the casting is completed, they undergo two aging treatments to eliminate internal stress, stabilize the structure and size, and improve mechanical properties.

 

1.3. 5 Bed

The bed body is cast with resin sand, and after casting, it is normalized. The bed adopts a split structure, which is assembled together by high-strength bolts and positioned by taper pins.

Adopt double rectangular sliding guide rail, precision grinding, guide rail surface quenching hardness is high.

The bed is equipped with a helical rack for cutter feed transmission, and the rack is precisely machined and quenched. The machine tool has large load capacity, sufficient rigidity and stable transmission.

V-shaped inclined bars are arranged inside the bed body, which has high support strength and is not easy to deform; The outer wall of the bed directly supports the guide rail, which can bear large cutting force. The rigidity of the guide rail is good, and it is not easy to deform and shake during processing, which is conducive to improving the machining quality and efficiency of the machine tool.

An oil return groove is cast around the bed body, an oil retaining cover is installed on the oil return groove, and the cutting oil on the bed body is automatically returned to the cooling oil tank

1.3. 6 Headstock

Is used to drive the workpiece to rotate and is fixed at the left end of the bed body.

Manual 3 gears, stepless speed regulation in gears, servo spindle motor drives the spindle to rotate through belt and gearbox, and a manual three-jaw chuck is assembled at the front end of the bedside box for clamping workpieces.

Gears are precision grinded; The tooth surface of the gear is quenched by high frequency, so that the gear can obtain high strength, high hardness, high wear resistance and high fatigue limit, and can withstand relatively large alternating load and impact load.

The external lubricating oil tank is used for cyclic lubrication of gears and bearings, and a low liquid level alarm device is installed in the oil tank.

A button plate is installed on the bedside box, which has the functions of spindle inching, feeding forward, feeding backward and emergency stop.

 

 

1.3. 7 Oil Pressure head

It is used for tool guidance, tool oil supply and tool bar support.

The servo motor is used to drive its axial movement, which can adapt to the processing of workpieces of different lengths, and tighten and loosen the workpieces. The servo motor can be operated in torque mode or position mode.

The oil pressure head slewing bearing is installed inside the oil presssure head body, which has good rigidity and high slewing accuracy.

The rotary seal is installed on the outside of the right end of the oil dispenser body, which is convenient for maintenance.

A tool bar support sleeve is installed at the right end of the oil feeder, which is used to support the tool bar.

The left end of the oil feeder is equipped with a guide sleeve, a conical disc and an oil retaining device, the conical disc is used for positioning the workpiece, and the guide sleeve is used for guiding the tool.

The oil retaining device has a push-pull structure, and an oil receiving box is installed at the lower part of the oil retaining device, so that the cutting oil flows back to the oil tank.

 

 

 

 

1.3. 8 Drilling box

Used to drive the cutter rotating, mounted on the feed pallet.

Manual 3rd gear, stepless speed regulation in gear, servo spindle motor drives the spindle to rotate through belt, pulley and gear train.

The left end of the spindle is equipped with a toolholder connecting sleeve for holding the tool.

A chip discharge bucket is installed at the right end of the spindle for discharging chips.

Gears are precision grinded; The tooth surface of the gear is quenched by high frequency, so that the gear can obtain high strength, high hardness, high wear resistance and high fatigue limit, and can withstand relatively large alternating load and impact load.

The external lubricating oil tank is used for cyclic lubrication of gears and bearings, and a low liquid level alarm device is installed in the oil tank.

 

 

1.3. 9 Tool Bar Support

For supporting the tool bar;

It adopts a high-rigidity integral structure, and is equipped with a support sleeve, which can absorb the impact, jitter, etc. generated during processing.

The automatic hanging and pulling mechanism is installed. When the tool is withdrawn, the feed pallet can automatically pull the tool bar bracket back to the initial position.

 

 

 

1.3. 10 Cooling system:

It is mainly composed of cooling pump, chip receiving box, oil tank, etc. to provide enough cutting oil for deep hole machining.

On-ground fuel tank, the fuel tank is fully welded with high-quality steel plate.

Install a telescopic protective cover between the chip boxes on the fuel tank to cover the fuel tank and prevent sundries from falling into the fuel tank.

The pressure, liquid level, oil temperature and flow rate of cutting oil can be digitally displayed on the control station.

 

 

 

1.3. 11 Feed carriage

Used to drive the tool to move axially.

The automatic lubrication station is used to lubricate the sliding guide rail surface regularly and quantitatively.

A button plate is installed on the pallet, which has the functions of inching, feeding forward, feeding backward and emergency stop of the spindle of the drill pipe box.

 

1.3. 12 Lubrication System

The sliding guide rail surface of the feed pallet is lubricated regularly and quantitatively by the automatic lubrication station, and has the function of low liquid level alarm.

The bearings and gears of the bedside box are lubricated by independent external oil tank circulation and have low liquid level alarm function.

The bearings and gears of the drill pipe box are lubricated by independent external oil tank circulation and have low liquid level alarm function.

The oil feeder support plate and the knife bar support support plate are lubricated by manual lubrication pump.

 

1.3. 13 Workpiece carrier

Used for workpiece prepositioning.

The operator first places the workpiece on the workpiece bracket, and after the workpiece is clamped and positioned, the workpiece leaves the bracket.

The V-shaped frame on the workpiece carrier is manually raised and lowered by using the T-shaped screw.

 

Workpiece carrier diagram

 

1.3. 14 Center frame

For supporting workpieces; Three-point closed central frame structure with two rollers below and one roller above; The two rollers below adjust the lateral position by the lead screw.

Contact ： Lean Lee

Email： export@dzguanlu.com

Whatsapp:008615153489973

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