Drilling
img
img

DRILLING

We have in-house servo control automate drilling machine with higher speed & superior accuracy.

Machine is designed with Double Spindle Head which gives high production rate at the same platform with single operator, single motor, single coolant pump and double the production then in single spindle.

What is Drilling?

Drilling is the process of cutting holes in a solid material using a rotating cutting tool. The indentation is a starting point for the drilling of the hole. Drilling is a cutting process of material in which a drill bit is used to cut or enlarge a hole in a solid material.

Name of machine

Category

Capacity

Make

Year of Establishment

Total number of machines

 

 

 

 

 

 

Double Spindle Drill Machine

3000 RPM

36 mm

2019

M12 to M64

1

Single Spindle Drill Machine

2000 RPM

64 mm

2010

M5 to M20

4

Initial considerations for drilling a hole

1. The hole

img

The three most basic considerations for drilling a hole are:

  • Hole diameter
  • Hole depth
  • Hole quality

2. Hole type and required precision affect tool choice. Drilling can be affected by irregular or angled entry/exit surfaces and by cross holes.

Hole types
img Through
img Blind
img Chamfer

Speeds and Feeds

The speeds and feeds recommended for use with micro drills have been calculated to give good tool life combined with maximum productivity. The speeds and feeds given provide a good starting point; each application may require adjustments to speeds and feeds to achieve optimum results.

Coolant

Coolant pressure is a key factor in micro drilling. Inadequate coolant pressure or volume can lead to premature tool failure. We strongly recommend use of high coolant pressures. The typical pressure recommended should be between 40-70 bar.

Matric Coarse Sizes

Tap Size Drill Size
1mm x .25 .75mm
1.1 x .25 .85
1.2 x .25 .95
1.4 x .3 1.1
1.6 x .35 1.25
1.7 x .35 1.3
1.8 x .35 1.45
2 x .4 1.6
2.2 x .45 1.75
2.5 x .45 2.05
3 x .5 2.5
3.5 x .6 2.9
4 x .7 3.3
4.5 x .75 3.7
5 x .8 4.2
6 x 1 5
7 x 1 6
8 x 1.25 6.8
9 x 1.25 7.8
10 x 1.5 8.5
11 x 1.5 9.5
12 x 1.75 10.2
14 x 2 12
16 x 2 14
18 x 2.5 15.5
20 x 2.5 17.5
22 x 2.5 19.5
24 x 3 21
27 x 3 24
30 x 3.5 26.5
33 x 3.5 29.5
36 x 4 32
39 x 4 35

Inch Sizes - National Coarse

Tap Size Drill Size
#1-64 #53
#2-56 #51
#3-48 5/64"
#4-40 #43
#5-40 #38
#6-32 #36
#36 #29
#10-24 #25
#12-24 #17
1/4-20 #7
5/16-18 F
3/8-16 5/16
7/16-14 U
1/2-13 27/64
9/16-12 31/64
5/8-11 17/32
3/4-10 21/32
7/8-9 49/64
1"-8 7/8
1-1/8-7 63/64
1-1/4-7 1-7/64
1-1/2-6 1-11/32
1-3/4-5 1-35/64
2"-4-1/2 1-25/32
img
img
img
img