Gun Drilling And BTA Combined Machine With CNC Control Model ( ZK2110F×3000mm )

Gun drilling and BTA combined machine with CNC control Model ( ZK2110F×3000mm )

 

TECHNICAL SPECIFICATIONS

Gun drilling and BTA Combined drilling machine

(Model: ZK2110F×3000mm )

 

Machine Operation: BTA Method (Internal chip removal ) , Gun drilling method (External chip removal). These two processing method cannot be used at the same time.

 

Machine Specifications:

Technical Items	Parameters
Gun drilling diameter range	φ10mm～φ30mm
BTA drilling diameter range	φ25mm～φ100mm
Max.Hole drilling depth	3000mm
Max.workpiece Length	3000mm
Hole length-diameter ratio	100:1
Workpiece OD range	Φ30～Φ150mm
CNC control system:	GSK system

 

Machine brief：

 

The machine adopts horizontal layout, using gun drill (External chip removal) and BTA (Internal chip removal) two processing methods, the two processing methods can not be used at the same time.

 

The headstock and center frame can be moved manually in horizontal direction, digital display positioning .The headstock can divide the workpiece into any indexing, and controlled by CNC system.

The headstock can be moved longitudinally on the machine bed to adapt to different lengths of work piece, The headstock movement is driven by screw rotation through motor control ,It can be adjusted by motor to save the labor. The headstock is equipped with motor-driven panel.

The machine tool is mainly used for division eccentric deep hole and center hole processing, The thickness difference between the hole processed and other cavity is not less than the diameter of the drill hole.

To ensure position accuracy, workpieces can be machined at both ends. You need to mark the position on the workpiece,it will be easy to aligning the workpiece when you drill the other end.

Workpiece clamping method: One end is clamping by headstock chuck,the other end is supported by center frame.

When clamping the workpiece, it's positioned by the workpiece outer circle. The chuck is clamped at one end and the center frame supports the other end. Take machine bed guide rail as benchmark,Aligning the upper busbar and side busbar of the workpiece. The middle of workpiece is supported by workpiece bracket.

 

The machine bed, box body and other basic parts are made of high quality cast iron (HT300).

 

The machine adopts Double rectangular sliding guide rail.

The machine is equipped with special cooling system to provide high pressure, high flow and high clean cutting fluid for deep hole drilling.

 

Automatic chip conveyor: automatically remove chip and achieve initial oil and chip separation.

 

Oil temperature controller: control the temperature of cutting oil and prevent cutting oil from deteriorating because of high temperature;

 

Filtration system: paper tape, mesh type, magnetic rod, precipitation filtration, improve cutting fluid cleanliness.

 

High pressure pump group: cutting fluid that produces adjustable flow and pressure to supply oil for cutting tools.

Cutting tool infeed is realized by servo motor driving ball screw; Cutting tool rotation is driven by spindle motor; Cutting tool infeed and rotation can be stepless speed regulation.

The machine tool has the functions of pressure protection, cooling system level and temperature protection, tool protection, stroke protection and so on.

Adopting CNC control mode, it has high degree of automation, strong maneuverability, high working efficiency, high precision, safety and reliability.

 

Machine mainly Parameters:

 

Specification				Parameters	Note
Working capacity	Drilling diameter range		BTA	Φ25～Φ100mm
			Gun drilling	Φ10～Φ25mm
	Max.drilling depth			3000mm
	Max.workpiece length			3000mm
	Workpiece OD range			Φ30～Φ150mm
	Max.workpiece weight			6T
	Max eccentric hole distribute diameter			Φ400mm
Machine performance	Z axis	Infeed speed range		0～500mm/min	Stepless
		Rapid traverse rate		5000mm/min
		Infeed motor torque/power		22Nm/3.5KW	With reducer
	Drill box	Max.rotary speed		1000r/min	Stepless
		Motor power		30KW	Spindle motor
	Headstock	Indexing accuracy		0.06 degree
		Motor torque/power		50Nm/7.8KW
		Chuck size		Φ630mm
		Horizontal movement travel		200mm	Digital display
	Center frame	Clamping range		Φ30～Φ150mm
		Horizontal movement travel		200mm	Digital display
	Others	Max.Hole-length ratio		100：1
		Machine total power(roughly)		70KW
		Machine total weight (roughly)		23T
		Floor space		11m×3.8m
CNC system	GSK CNC system(other brand is optional)
Cooling system	Max.pressure			8MPa	Adjustable
	Max.flow			300L/min	Adjustable
	Filtering accuracy			30μm

 

 

 

Machine mainly parts manufacturers list:

 

No.	Name	Manufacturers
1	Ball screw pair	Chinese brand
2	CNC system and servo infeed motor	GSK or other brand
3	Automatic oil temperature controller	Chinese brand
4	Automatic chip conveyor	Chinese brand
5	Automatic lubrication device	Chinese brand
6	Drill box spindle bearing	NSK
7	Mainly electric components	Schneider
8	Mainly hydraulic components	Taiwan
9	Drill box main motor	M.K
10	Screw bearing	Chinese brand
11	Servo reducer	Taiwan
12	Drum filter	Chinese brand

 

Machine standard configuration:

 

No.	Name	Quantity	Note
1	Chain type chip conveyor	1 set
2	Oil chiller	1 set
3	Cooling system	1 set
4	Hydraulic system	1 set
5	Tooling	1 set
6	Machine pad iron	1 set
7	Foundation bolt	1 set
8	Working lamp	1 set
9	Centralized lubricating station	1 set
10	Machine user manual	1 set

 

 

Machine necessary documents:

 

No.	Name	Quantity	Note
1	Machine user manual	1 copy	/
2	Machine main parts structure diagram	1 copy	/
3	Spare parts (guide sleeve, drill bar supporting sleeve) drawings	1 copy	/
4	Hydraulic schematic diagram	1 copy	/
5	Lubrication schematic diagram	1 copy	/
6	Electrical schematic diagram	1 copy	/
7	Interconnected graph	1 copy	/
8	Trapezoidal graph	1 copy	/
9	Certificate of Conformity	1 copy	/
10	Machine packing list	1 copy	/
11	CNC System Manual	1 copy	/
12	General layout of machine	1 copy	/

 

 

Functions and structures of machine mainly parts:

 

The machine is composed of Machine bed, Drill box, Infeeding system, Cooling system, Electric control system, Hydraulic system, Automatic chip conveyor, Oil pressure head, Workpiece bracket, Center frame, headstock, etc. The basic structure of the main parts is described as follows.

Machine bed

Precision resin sand molding, HT300 precision casting, closed casting structure, provide enough rigidity and strength for machine .The machine bed is equipped with headstock, workpiece bracket, center frame, oil feeder, drill box, infeed system and drill bar support etc. The layout is reasonable and the operation is convenient.

The bed is divided into two parts: the workpiece machine bed and the cutting tool machine bed.

The machine adopts Double rectangular slide guide rail, and guide surface is treated by medium frequency quenching.

Drill box

Function: It is used to driving the cutter tool rotation,

Spindle Max.rotary speed is 1000r/min. The box body is made of high quality cast iron. The synchronous toothed belt transmission is used between the motor and the spindle. The motor adopts Domestic brand servo spindle motor. The spindle is supported by NSK high precision spindle bearing. The supporting method is fixed front end and free rear end. Central bearing is centrally lubricated by central lubrication station.

Headstock

 

It is used for workpiece indexing and workpiece clamping.

It can moved horizontally and manually, digital display positioning, manual locking, suitable for different eccentric hole processing.

Servo motors with brakes are used to drive the spindle indexing through the reducer. After indexing, the spindle is automatically locked.

The front end of the spindle is equipped with a manual chuck.

The headstock can be moved longitudinally on the guide rail of the bed to adapt to the processing of different length workpieces. The longitudinal movement is realized by a common motor driving gear rack.

Infeed system (Z axis)

 

Function: It used for controlling cutter tool infeed.

Z axis guide rail : sliding guide rail, double guide structure; guide surface through intermediate frequency quenching.

Z axis drive mode: servo motor drives ball screw through servo reducer

Oil pressure head

 

Function: It used for drill bit guiding, sealing oil, cutting tool oil, supporting cutter bar and chip removal.

The hydraulic cylinder controls the oil pressure head to move along the axis of the drilling hole on the guide rail of the feeding slide table as a whole, so as to realize the tightening and loosening of the workpiece.

Hydraulic system

 

It used to control the oil pressure head to tightening and clamping the workpiece.

 

Automatic lubrication system

 

The front and rear bearings of the spindle, the guide rail surface of the trailer plate and the ball screw nut are all lubricated by automatic timing and quantitative lubrication. The oil tank has the function of automatic alarm for low oil level.

Drill bar support (2 set)

 

Function:It used support cutter bar, enhance tool rigidity, absorb borehole vibration.

After drilling, through the hanging structure, the drill pipe box will pull back the drill pipe bracket, when the drill pipe bracket passes through the position before drilling automatically left

Center Frame

 

Function: locate and support workpiece.

Manual lateral movement, digital display positioning, manual locking, suitable for different eccentric hole processing. With roller support, the following two rollers can move to the middle under the action of positive and negative screws.

Machine electric system

 

It adopts Adopting CNC system.

Manual pulse generator and machine tool are equipped with three color working lights.

The program can be programmed to complete automatic processing cycle, and can also be manually operated, moved, opened and closed, etc.

The electric cabinet is designed independently.

Programmable setting of processing parameters, such as rotational speed, cutting amount, etc. Processing process monitoring, external mobile operation Electronic handwheel.

 

 

Machine accuracy:

 

Specifications	Accuracy
Hole deviation	0.8mm/1000mm (Hole -length ratio ≤100：1)
Surface roughness	Ra0.8～Ra 12.5um
Hole accuracy	IT7～IT10

 

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