SAMCHULLY NC Rotary Table Series Instruction Manual Download Page 28

26

NC Rotary Table

『누적계산정도가 30초라는 것이 원주길이로 
어느 정도인지』 또는『누적피치오차가 0.05 
라는 것이 각도로  어느 정도인지』를  
알고자하는 경우에는 각도와 원호길이의 
관계에서 다음의 계산식을 사용해 주십시오. 

9. 

참고 자료 / References

9-1    원호길이와 각도의 환산

D : 공작물의 직경(mm)
 α : 각도(초)
 L : 원호길이(mm)

공작물의 직경을 100mm로하고 앞의『누적계산정도가 

30초를 원호길이에 표시』하면 (3)식을 사용하여

<예>

그러므로 206초는 3분26초가 됩니다.
이상과 같이 (2), (3)식을 사용하여 계산해보면 
원호길이와 각도의 환산이 가능합니다. 

Φ

D

L

π x D

L

360 (도) x 60 (분) x 60 (초)

α

=

------------------ (1)

α=

L =

L = 2.424 x 30 x 100 x 10    = 0.007272 mm = 7.3μm 

 

π x D

360 x 60 x 60 x L

360 x 60 x 60

D

4.125 x L x 105  

=

α=

100

4.125 x 0.05 x 10

=

2.424 x 10   xαx D  

-6  

5  

-6  

α x π x D  

=

----- (2)

-------- (3)

(1)에서

또한

따라서, 원호길이는 약 0.0073mm 또는 7.3μm로 됩니다.
또한 누적피치 오차가 0.05의 각도는 (2) 식을 사용하면

206.25 초

<Example>
Let the diameter of the work piece be 100mm, and“express
accumulated calculation accuracy of 30 seconds in arc length”
using Equation (3),

And, 206 seconds are 3 minutes and 16 seconds.
As shown in the above examples, the arc length 
and the angle can be converted into each other 
using Equation (2) or (3).

π x D

L

α

=

------------------ (1)

α=

L =

L = 2.424 x 30 x 100 x 10    = 0.007272 mm = 7.3μm 

 

π x D

360 x 60 x 60 x L

360 x 60 x 60

D

4.125 x L x 105  

=

α=

100

4.125 x 0.05 x 10

=

2.424 x 10   xαx D  

-6  

5  

-6  

α x π x D  

=

----- (2)

-------- (3)

and

Therefore, the arc length is approximately 0.0073mm (or 7.3um).
For 0.05 of the accumulated pitch error in the angle,
using Equation (2), 

206.25 seconds

Φ

D

L

IMPORTANT

유의사항

To determine『how much 30 seconds of 
accumulated calculation accuracy 
corresponds to in arc length』or『how 
much 0.05 of accumulated pitch error 
corresponds to in angleterms of angle』, 
for example, you can calculate the 
figure using the equation between the 
angle and the arc length.

9-1    

Conversion between 

         Arc Length and Angle

IMPORTANT

D: Diameter of 
     Work Piece 
α: Angle (s)
L: Arc Length

360 (degrees) 60 (minutes) 60 (seconds)

From (1)

Summary of Contents for NC Rotary Table Series

Page 1: ...and DANGER WARNING items in this maunal before operating your NC Rotary Table Please keep this manual by your side for answers to any questions you may have and to check IMPORTANT 1 S 120 120L 120F2 1...

Page 2: ......

Page 3: ...ial danger which could lead to serious or mild personal injury if not avoided properly NC NC NC Thank you very much for purchasing Samchully Machinery s NC Rotary Table Please read this User s Manual...

Page 4: ...clamp 6 3 Clamp Unclamp Solenoid Valve 7 6 13 14 15 15 16 16 16 17 18 18 19 19 19 19 19 20 20 21 4 1 1 15 4 3 1 Air Clamp System 17 5 1 5 2 7 1 21 7 1 1 Worm Gear Backlash 21 7 1 2 Worm Gear Backlash...

Page 5: ...9 19 19 19 19 20 20 21 4 1 1 Transportation and Installation on the Machine Tool 15 4 3 1 Air Clamp System 17 5 1 Daily Inspection 5 2 Periodic Inspection 7 Description maintenance and adjustment of c...

Page 6: ......

Page 7: ......

Page 8: ......

Page 9: ......

Page 10: ......

Page 11: ......

Page 12: ......

Page 13: ......

Page 14: ...0 020 0 020 0 020 H 0 020 20 sec 4 sec Unit 8 9 1 2 4 5 6 7 3 This work shall be conducted with a measuring instrument Table 2 Fig 1 Center hole run out at Table Run out of Table face in rotation Squ...

Page 15: ...ence plane into the groove in the table of the machine tool If the gap between the T groove of the table and the guide block is excessive position the block close to one side of the T groove 4 Fix the...

Page 16: ...ever replacing all the lubricant every six months is the standard To replace the lubricant drain the existing lubricant completely Clean the oil tap before pouring in the lubricant to prevent dust or...

Page 17: ...e motor casing See the outside drawing for installation 3 The supply pressure of the air should be 0 5 0 7Mpa 5 1 7 1kgf cm2 4 If used in combination with a tail spindle supply air from the NC Rotary...

Page 18: ...e kept open When the air is discharged out the operator can hear the sound The hydraulic clamping system requires an additional purge air supply Refer to the outside drawing of the machine for install...

Page 19: ...Inspection 6 NC Description of the NC Rotary Table 6 1 6 1 Cautions for the Table Clamp The Rotary Table must be rotated while unclamped and processing after positioning must be performed while clamp...

Page 20: ...Check Device The NC Rotary Tables equipped with air clamps are installed with air solenoid valves The standard specifications of the piping are as follows which must be taken into consideration into...

Page 21: ...ustment of Worm Gear Backlash To adjust the backlash measure the current backlash with the following procedure Adjust the backlash after measurement Table 6 Appropriate backlash 1 T SOLT 2 TAP HOLE 3...

Page 22: ...rench into the hexagonal recess of the worm shaft Note refer to Worm Gear Backlash Adjustment page 21 of this manual The backlash is reduced when the housing is turned clockwise 7 When the backlash ha...

Page 23: ...NG PLUG HOUSING WORM SHAFT Fig 6 HOUSING COVER HOUSING PLUG HOUSING WORM SHAFT SETSCREW O RING WRENCH BOLT WRENCH BOLT JOINT Fig 5 2 5 4 3 1 6 When the adjustment has been completed reassemble the wor...

Page 24: ...s on the front of the housing where there is no bolt Required for turning the housing 8 Adjust the backlash by turning the housing with the bolts using hands Insert a T wrench into the hexagonal reces...

Page 25: ...not to damage the O ring If the O ring is damaged oil will leak out Please loosen coupling fix bolt 3 to 4 turns IMPORTANT CAUTION When the adjustment has been completed reassemble the worm gear in t...

Page 26: ...pling and fix it with the set screw 6 Assemble the motor plate and the servo motor assembled with the coupling and mount them with the wrench bolts 7 In the motor cover connect the cables to the servo...

Page 27: ...and cutting fluid from the Table completely and put it on rigid wooden plate to maintain accuracy Apply rust preventive oil to the Table and case or protect them with a wooden cover or wrap them with...

Page 28: ...r using Equation 2 or 3 x D L 1 L L 2 424 x 30 x 100 x 10 0 007272 mm 7 3 m x D 360 x 60 x 60 x L 360 x 60 x 60 D 4 125 x L x 105 100 4 125 x 0 05 x 10 2 424 x 10 x x D 6 5 6 x x D 2 3 and Therefore t...

Page 29: ......

Page 30: ...c ti o n m o n it o re d T y p e te s te d P ro d u k ti o n u b e rw a c h t B a u a rt g e p ru ft s ISO 9001 2008 www samchully com Samchully Machinery 405 820 99 TEL 032 822 4811 FAX 032 822 4377...

Reviews: