Robert Speck Ltd
Little Ridge
Whittlebury Road
Silverstone
Northamptonshire
NN12 8UD
United Kingdom
Tel (+44) (0)1327 857307
Fax (+44) (0)1327 858166
 
 
 
 

CNC Feeds Principles

  • Establish a firm start
  • Feed steadily to allow heating
  • As point penetrates through material thickness start to accelerate
  • Finish with collar forming Last part feed distance ie 1 x material thickness Slow feed rate while forming collar
  • Finish with flat style - flush finish Last part of feed distance ie 1 x material thickness
  • Rapidly accelerate feed rate

Examples for illustration purposes only. Adjustment will normally be needed for best results.

FEED RATE

Feed Depth

5.3 short

1.5 material

5.3 short flat

1.5 material

5.3 long flat

3.0 material

18.7 long flat

10.0 material

0

mm/min

mm/min

mm/min

mm/min

1

200

200

200

200

2

150

150

150

150

3

200

200

150

 

4

250

250

200

 

5

300

300

250

200

6

400

400

300

 

7

500

500

400

 

8

600

600

500

 

9

400

1,000

600

250

10

300

1,500

600

 

11

 

 

1,000

 

12

 

 

1,500

 

13

 

 

1,500

 

14

 

 

1,500

 

15

 

 

 

300

 

 

 

 

 

20

 

 

 

350

25

 

 

 

 

30

 

 

 

400

35

 

 

 

800

40

 

 

 

1,000

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