CNC Gun Drilling Machine With Double Spindle

 

1.2 Gun drilling processing method,DOUBLE spindle structure,can drill TWO workpiece ,suitable for drilling the coaxial hole on shaft parts.

1.3 When drilling ,both workpiece and cutting tool rotate in opposite directions, cutting tool feeding . Used for drilling the coaxial hole on shaft parts .

1.4Workpiece clamping:

The cone disk is mounted in front end of spindle of headstock and guide frame, the hydraulic system control the headstock spindle to move axially, use the cone disk and chamfer on both end of workpiece to clamp and position the workpiece automatically .

 

Workpiece Clamping Sketch

1.5 The machine adopts linear guide rail .

1.6 CNC system :SIEMNES 808D

1.7 Drill box:

Adopt the servo main motor driving the spindle to rotate through synchronous belt and synchronous belt wheel, speed stepless could be realized , the max. rotary speed of spindle is 5000r/min ; One motor drives two spindles to rotate . The spindle driver front-located, good for protecting the main motor, and convenient for changing the cutting tool .

1.8 Headstock:

Drive the workpiece to rotate, rotary speed is constant 120r/min;The spindle can move axially under the control of hydraulic system to tighten and loosen the workpiece ; The spindle driver front-located, good for protecting the main motor, and convenient for changing the cutting tool .

1.9 Cutting tool feeding system:

Adopt the structure of servo motor driving ball screw, the cutting tool feeding speed stepless could be realized .

1.10 Drill bar support rest :

3 sets , the movement between drill bar support rest and drill box is linked; The distance between drill bar support rests is equal when the drill box locates in any position.

1.11 Coolant system :

Mainly composed of high pressure pump groups, chain plate chips conveyor, oil chiller,filter device and so on . The pressure adjustment knob and flow adjustment panel of the coolant system are installed on the CNC system operation station .

1.12: The machine bed ,box body etc. basic parts are cast by resin sand, through twice aging treatment.The machine bed is designed with slant oil returning slot , so that the cutting oil will not be stored, could return to the oil tank quickly .

1.13 Guide frame:

Used for guiding the cutting tool , discharge cutting chips , supporting the drill bar . The guide sleeve is assembled on its front end , used for guiding the cutting tool ; The drill bar support sleeve is assembled on its rear end, used for supporting the drill bar .

2. Machine main technical parameters :

Model		ZSK2102x1000mm (DOUBLE SPINDLE)
Main parameter	Drilling diameter range	Φ3~Φ20mm
	Max. Drill depth	1000mm
	Max. Workpiece length	1000mm
	Spindle quantity	2

	Spindle space	140mm
Drill box	Main motor power	7.5KW
	Max. Rotary speed	5000r/min
Headstock	Power	1.5 KW
	Rotary speed	120r/min
Cutting tool feeding	Feeding speed range	5~500mm/min
	Rapid move speed	4m/min
	Feeding motor torque	7.5Nm
Coolant system	Max. Flow	100L/min
	Max. Pressure	10MPa
	Filter accuracy	20μm
Processing accuracy	Hoe size accuracy	IT7~IT10
	Surface roughness	Ra0.8μm~3.2μm
	Hole entry and exit deviation	Workpiece fixed, 1mm/1000mm; Workpiece rotation,0.5mm/1000mm. (Max. hole length-diameter ratio≤100:1)
Others	Machine general power (about)	25kw
	Floor size	5.8m x 3. 1m
	Machine weight(about)	6T

 

3. Machine main configurations :

Series	Name	Supplier
1	CNC system , servo feeding motor	SIEMENS
2	Servo spindle motor of drill box	MK
3	Spindle bearing	Chinese famous brand
4	Screw bearing	Chinese famous brand
5	Ball screw	Chinese famous brand
6	Rolling linear guide rail	Chinese famous brand
7	Chips conveyor	Chinese famous brand
8	Chain	Chinese famous brand
9	Main electric component	Schneider
10	Main hydraulic components of hydraulic system	Chinese famous brand

11	Frequency Converter Motor of coolant system	Chinese famous brand
12	Frequency Converter of coolant system	Chinese famous brand
13	Auto lubricating device	Chinese famous brand

 

4. Machine Main parts :

Series	Standard parts	Optional parts
1	Chain type chips conveyor	Auxiliary toolings
2	Auto paper filter	Cutting tools
3	Oil chiller	Cutting oil
4	Cutting tool oil supply pump group	Automatic oil dumper
5	CNC system and servo feeding motor	NSK spindle bearing
6	Servo main motor for drill box	/
7	T-slot working table	/
8	Linear guide rail	/
9	Hydraulic pump station	/
10	Drill bar support rest	/
11	Two sets workpiece carrier	/
12	Constant speed headstock	/
13	One set Machine User Manual	/

 

5. Processing accuracy :

Item	Accuracy
Hole entry and exit deviation (Max. hole length-diameter ratio≤100:1)	1mm/1000mm (Workpiece fixed)
	0.5mm/1000mm (Workpiece rotation)
Hole surface roughness	Ra0.8~3.2μm
Hole size accuracy	IT7~IT10

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