TEL: +86-574-55847982
E-mail: chengzhao@nbchengzhao.com
julie@nbchengzhao.com

Product feature:

1. The machine-frame is made by C-type plate welding, with good rigidity and big handling space. The machine sets three die-stations (among them, one is the marking die-station), automatic switching die-stations. Clamping system can adapt to different work pieces, with zero baffle as datum mark, and work-piece supported by rolling-ball working table. Axis X & Y action should be controlled by servo motor and ball-screw driving, and double-axis CNC system controls the position of punching, so as to make the whole machining process automatically; operator may input the sizes of work-piece to computer for repeated calling program in the future.

2. Adopt CNC technology, servo motor infeeding, with high efficiency, stable work-piece precision.

3. Important functional components adopt modular assembly, easy to repair it.

4. Carry out punching, marking and drilling on the one plate.

5. Drilling unit has the functions including rapid falling, slow work-feeding and quick feeding back to improve working efficiency.

6. Easy programming, may input the diameter and position of holes to computer, and also may use the program generated by lofting software, or adopt direct conversion CAD/CAM.

7. The hydraulic station adopts double pump, single motor, water cooling system, sleeve type coupling for all pipelines.

8. The X & Y axis are driven by servo motor, ball screw and linear guide, which ensure the high precision.

9. With self-diagnosis failures function.

10. Lighten the working strength of workers.

11. POWER: Three phase four wire systems

   AC Voltage: 380V or 415V for India

   Fluctuation of voltage: ±5%

   Frequency: 50Hz

   Local working temperature: 0—40℃

 

Special advantages:

■Hydraulic station adopts dual-pump and single motor. Punching speed is faster than other company’s, so it is more efficient and improve the workshop ability.

■It adopts sleeve-type coupling for all pipelines, which avoid leakage.

 

Specifications:

Max size of work piece L×W(mm)		1500×800
Max. diameter of punching (mm)		Φ26
Plate thickness of punching (mm)		5～25 (Q235) 5～20 (Q420, 16Mn)
Max. diameter of drilling (mm)		Φ50
Plate thickness of drilling (mm)		40
Punching force (kn)		1200
Marking force (kn)		1000
Min. distance between hole and plate edge (mm)	Punching	25
	Drilling	Depends on hole diameter
Dimensions of characters (mm)		14×10×19 / 20×12×19
Quantity of characters		16
Die-stations		3
Feeding speed of drilling(mm/min)		25～280
Stroke of drilling spindle(mm)		180
Rotation speed of drilling spindle(r/min)		120～560
Precision		Accordance with GB2694
Programming mode		Input by keyboard, RS232 interface, floppy disk and USB interface
Overall dimensions  L×W×H (mm)		3300×3200×2600
Weight of machine (kg)		Approx.7000

 

Main Components:

NO.	Name			Manufacturer
Main Electric Components
1	PLC			Japan Mitsubishi
2	Main spindle Motor			Germany Siemens
3	Main frequency converters			Germany Siemens or Rexroth
4	Servo Motor			Japan Panasonic
5	Servo Driver
6	Business Computer		LCD screen	China Lenovo
7	Proximity Switch		Normal open	AUTONICS
8			Normal close
9	Low-voltage electrical components (switches, buttons, circuit breakers, indicator lights)			German SIEMENS
Main Hydraulic Pressure Components
1	Electromagnetic hydraulic Valves			Italy ATOS
2	Vane pump			America DENISON
Main Pneumatic Components
1	Punching Unit	Padding Block Cylinder		Japan SMC
2		Magnetic Switch		Japan SMC

 

Spare parts list:

NO.	Name	Material	Qty.	Remark
1	Punch head	T10A	12	Ф17.6, Ф21.6, Ф25.6
2	Cavity die	T10A	24	Ф18.7, Ф19.2, Ф22.7, Ф23.2, Ф26.7, Ф27.2
3	Punch head pole	T10A	3	Including installed in machine
4	Character box	T10A	2	Including installed in machine
5	Characters	T10A	1	Including installed in machine
6	Punch head nut	40Cr	3	Including installed in machine
7	Upper claw	T10A	3	Including installed in machine
8	Nether claw	T10A	3	Including installed in machine
9	Proximity switch	Normal open	1	AUTONICS
10	Proximity switch	Normal close	1	AUTONICS
11	Drill holder		1 sets	Made in China
12	Tools		1 set
13	Spanner for punch head		1	Made by manufacturer
14	Spanner for double nipple		2	Made by manufacturer
15	Standby paint		1	1pail for main color and 1pail for warning color
16	Operation Manual		2 sets

 

 

The Main Machine

 

 

 

The main machine is a special hydraulic press which is equipped with pressure apparatus and drill drift holding device. There are three drill drifts on the holding device. They are used to install punch and marking apparatus.The body of the machine uses Type C double-plate jointing structure with the advantage of rigid and high power of anti-eccentric load. The main cylinder is fixed on the body by four high strength bolts which is easy to install and convenient for maintenance.

 

The work Table

CNC feeding worktable can be divided into fixed part and movable part. The fixed part is set on the ground which is linked with main unit. To the fixed part, alongside the front-back direction of main unit is called Axis Y, and then the fixed part is called Axis Y rack. The movable part is installed on the Axis Y rack through the guide bush which is rolling in straight line, under the driven by the servo motor and ball screw shaft, the movable part is running though the Axis Y to realize precise positioning. To the movable part, alongside the left-right direction of main engine is called Axis X, and then the movable part is called Axis X rack. Axis X rack is closed to the head of the main engine, on both sides which is installed a supporting plate with universal transmission ball to support the work piece. At the back of the Axis X rack, two rolling guide bushes are installed with a sliding plate on the direction of Axis X. Under the driven by the servo motor and ball screw shaft, the sliding plate can running though the Axis X to realize precise positioning.

 

The Hydraulic Clams

There are two hydraulic clamps on the sliding plate, their location can be moved alongside the Axis X so as to adjust different work piece. While in adjustment, loose the screw and press plate, move the clamp by hand to the adequate place, fasten the screw and press plate again. In the vertical direction, the clamp is in the condition of floating. To the joint plate with slight unevenness, they may be arched during punching, and then the clamp will be moved accordingly to avoid the breakage of clamp. A original location device is installed at the left side of the sliding plate, when the hydraulic cylinder push the locating plate at an angle of 90°, the locating surface is just at the same direction to the Axis Y, and form a rectangle with two clamp surfaces (direction of Axis X) to calibrate the original place of joint plate.

The upper and lower jaws of clamp are spliced which are convenient to replace after abrasion.

 

The Drilling Unit

This drilling unit enjoys compact design, powerful engine and high efficiency.

With the automatic signal transmission device which can send signals automatically when the drill touches the work piece and finishes punching, the drilling machine possesses the empty run fast forward function and instant transfer to processing function when touches with work piece. After finishes drilling, it can be returned with high speed. In other word, during the drilling work, this drill machine does not need to make any adjustment according to the variation of the lengthen of drill bit or the thickness of the plate, as a result, this drill machine can largely diminish the non-operation time to improve the efficiency.

The drilling and drawing force of the main bearing is provided by the gear driven while the feeding power is driven by the hydraulic cylinder.

 

The Punching Unit

Three position - One for marking, two for punching

There are one service position of marking and two positions of punching on the machine. While in marking, put the required characters into the character box and fill the vacancy with blank characters, then screw the bolts to tight, insert the character box to the fixed groove at the top of the piston rod. The punching mould shall be selected in accordance with the aperture and plate thickness. The punch is fixed on the rod to tighten the screw, and put the hollowing block into the base of cavity die.

 

The Hydraulic Station

The hydraulic pressure system is mainly composed of oil tank, punching & marking regulator, pressure system block and drill system block. Each part is connected with steel pipe or hose, and oil tanks are driven under the control of electrical CNC system to realize calibration, clamping, pressing, punching, drilling and marking etc.

High pressure pump and low pressure pump is installed on the oil tank to provide hydraulic power to the whole system.

 

The Electrical Cabinet

 

The power supply of this CNC punching machine for joint plates is AC380V, 35KVA, and distributed to a drive supply of AC415V, AC200V and a control supply of AC220V by master switch QF1, servo transformer, and control transformer. The drive supply of AC415V is for the motor of oil pump; the drive supply of AC200V is for servo motor; the control supply of AC220V is for CNC, DC24V regulated power supply, AC contactor, and magnet valves. The DC24V supply is for servo drive, CNC system, PLC and proximity switch.

 

The Manual Lubrication System

 

 

Now we equipped the machine with manual lubrication system, previous client need to lubricate the punching and marking dies one by one, now they just need push the handle, it can lubricate the punching and marking dies simultaneously. The operator don’t need reach out to the inside of machine, It’s more convenient and more security.

(Remark: It’s just need lubricate one or two times of one week, depend on the working environment, if you saw the punching or marking rods dry, then lubricate them.)

 

Work pieces