Medical Parts Gun Drilling Machine

2.Medical Parts gun drilling machine Machine Overview

2.1 Machine Uses

It is used for coaxial hole drilling of cylindrical workpieces and adopts gun drilling method.

2.2 Drilling method:

Gun drill method: internal oil intake, external chip removal; The cutting oil reaches the cutting edge part through the rotating joint at the tail end of the drill box spindle box, the inner hole of the drill box spindle and the inner hole of the tool shaft, and the cutting oil carries chips and is discharged into the guide frame through the V-shaped groove outside the tool shaft, and then enters the chip conveyor.

2.3 Medical Parts gun drilling Machine processing range

Gun drill drilling range: φ1.5-φ10mm

Maximum machining depth / maximum workpiece length: 500mm

Workpiece outer diameter range: φ5-φ20mm

Medical Parts gun drilling machine mainly Parameters:

4. Machine tool structure description

4.1 Workpiece Clamping

The headstock and the front end of the spindle of the guide frame are equipped with a pneumatic chuck. The hydraulic system controls the axial movement of the headstock and automatically clamps, positions, and seals the workpiece.

4.2 Bed

The bed body is cast with resin sand, and normalized after casting.

A Roller linear guide rail is installed on the bed body for the movement of the Headstock and the drill box.

V-shaped inclined ribs are arranged inside the bed body, which have high support strength and are not easily deformed; The outer wall of the bed body directly supports the guide rail, which can withstand large cutting forces, has good rigidity, is not easily deformed or shaken during machining, and 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 automatically returns to the cooling oil tank.

4.3 Drill Box

Used to drive tool rotation and continuously adjust speed.

Electric spindle structure.

A rotary joint is installed at the end of the spindle for tool oil supply.

A spring chuck is installed at the front end of the spindle for clamping the cutting tool.

4.4 Tool Feed System

The servo motor drives the ball screw to realize the feed movement of the tool.

The nuts on the ball screw are double-nut structures and are lubricated at regular intervals using an automatic lubrication station.

Both ends of the lead screw are equipped with special bearings for the lead screw, adopting a bearing structure with one end fixed and one section stretched.

4.5 Drill bar holder

Used to support the Drill bar

The Drill bar is supported by a support sleeve installed on the cutter bar bracket and a support sleeve installed on the right end of the guide frame to enhance the rigidity of the Drill bar.

The Drill bar holder is mounted on the linear guide rail slider and can automatically adjust the spacing with the movement of the drill bar box.

Schematic diagram of Drill bar holder follow-up (see the standard catalog for the quantity of Drill bar holders)

4.6 Headstock

The workpiece is driven to rotate by the headstock, and the rotation speed of the workpiece is fixed.

Ordinary motors drive the spindle of the headstock to rotate through gear reducers, synchronous belts, and synchronous belt pulleys.

A pneumatic chuck is installed at the front end of the spindle for clamping the workpiece.

A servo motor and a T-screw drive the bed headstock to move on the workpiece bed.

The moving guide is a ball linear guide.

Simple diagram of the exterior of the Headstock

4.7 Cooling System

Composition: chip conveyor, circulating pump, paper tape filter, oil cooler, pump set, liquid level sensor, flow sensor, pressure sensor, temperature sensor, fuel tank.

The above-ground fuel tank is fully welded with high-quality steel plates.

Various sensors are installed on the cooling system, and the liquid level, oil temperature, flow rate, and pressure are displayed on the instrument.

Pump unit: A set of variable frequency pumps that adjust the output flow rate of the pump by adjusting the motor speed, and a manual overflow valve at the oil outlet of the pump to adjust the output pressure of the pump.

Chip conveyor: Removes chips and allows cutting oil to leak into the dirty oil tank.

Circulation pump: Feeds the cutting oil in the dirty oil tank into the filter.

Paper belt filter: Removes impurities from the cutting oil coming from the dirty oil tank and has an automatic paper feeding function.

Oil cooler: To cool the cutting oil, it automatically starts and stops according to the set upper and lower limits of the oil temperature.

Schematic diagram of cooling system

4.8 Control System

CNC System: Fanuc

Mainly used for controlling: tool rotation, tool feed, workpiece rotation, cooling system, lubrication system, hydraulic station.

The operator only needs to press the start button, and the machine tool will automatically complete the processing according to the program.

4.9 Lubrication System

The linear guide slider and lead screw nut used for moving the drill pipe box are lubricated regularly and quantitatively by an automatic lubrication station.

4.10 Machine Tool Protection

Machine equipped full protection

After the protective sliding door is opened, the tool and workpiece are completely exposed without obstruction, facilitating tool replacement and workpiece loading and unloading.

4.12 Guide frame

Fixed at the middle part of the bed body, used for tool guidance, chip removal and supporting the tool shaft.

The front end is equipped with a guide sleeve and a pneumatic chuck, wherein the guide sleeve is used for tool guidance, and the pneumatic chuck is used for workpiece clamping and positioning;

The rear end thereof is equipped with a drill bar support sleeve for supporting the knife bar.

The cutting oil is discharged vertically downwards through the middle cavity of the guide frame with the chips.

Schematic diagram of guide frame

5. Standard equipment for machine tools

No.	Name	Quantity	remark
1	Bed body	1 set
2	Drill box	1 set
3	Headstock	1 set
4	Hydraulic station	1 set
5	Workpiece carrier	2 sets
6	Guide frame	1 set
7	Cooling system	1 set
8	Tool feeding system	1 set
9	Lubrication system	1 set
10	Control system	1 set
11	Electrical box (with air conditioning)	1 set
12	Instruction manual	1 set
13	Drill bar holder	2 sets
14	Machine full protection	1 set
15	chip conveyor	1 set
16	Oil cooler	1 set
17	Filter	1 set
18	Pneumatic chuck for headstock and guide frame	One set each
19	Headstock servo moving	1 set

6. Machine tool selection

No.	Name	model	Quantity	remark
1	Cutter	ΦD	1
2	Auxiliary device	Φd	1 set
3	Guide sleeve	ΦD	1
4	Cutting oil	deep hole extreme pressure cutting oil	1000 liters

7. Machine tool configuration

Component Name	Manufacturer
CNC control system	FANUC
servo feed motor	FANUC
Electric spindle for drill pipe box	Domestic famous brand
spindle bearing for bedside box	HRB ,ZWZ ,LYC
Roller linear guide rail	Taiwan HIWIN
Ball screw	Domestic famous brand
Pneumatic chuck	Domestic famous brand

8. Machining accuracy

Hole deflection: Workpiece rotation 0.04mm/100mm

Roughness: Ra1.6~6.3um

Aperture accuracy: IT8~IT10

Contact us:

Bonnie

Email:info@dzguanlu.com

WhatsApp:+86 15153489983

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