SAMCHULLY NC Rotary Table Series Instruction Manual Download Page 21

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NC Rotary Table

Instruction Manual 

웜샤프트 및 웜휠에는 특수한 재료를 사용하여 극히 정밀한 가공으로 우수한 
정도를 갖게 합니다.
웜샤프트, 웜휠의 백래쉬 제거 방법으로서 듀얼리드 웜(DUAL LEAD 
WORM)을 사용하고 있습니다.
이것은 웜샤프트의 좌우 치면의 리드를 다르게 변경하여 웜샤프트를 
축방향으로 이동시켜 웜휠의 백래쉬를 조정하게 됩니다.

이 듀얼리드 웜 방식은 가장 이상적인 치면의 백래쉬를 미세하게 조정할 수 
있고 이론적으로도 실제적으로도 가장 정확한 백래쉬 조정이 가능합니다.

웜기어의 백래쉬는 출하 시에 적정치로 조정되어 있지만 장시간의 
사용중에는 조정이 필요한 경우도 있습니다.
백래쉬 적정치는 아래 [표6]에 기재했습니다. 
이 값은 기계 냉각 시, 즉 장시간 휴지 후에 상정한 값입니다.
따라서 장시간 연속 운전한 경우에는 열팽창에 의한 값보다 백래쉬는 
작아집니다.

에어클램프 사양의 NC 로터리 테이블의 경우 에어솔레노이드 밸브가 내장 
되어 있습니다. 
그 배관은 기준사양으로서 다음과 같이 되어 있으므로 전기 배선시에는 
주의해 주십시오.

솔레노이드 ON  ----  테이블 언클램프
솔레노이드 OFF ----  테이블 클램프

확실한 작업진행을 위해서 반드시 클램프·언클램프 확인신호를 이용해 
주십시오.
압력 스위치의 설정압은 각 클램프 방식에 따라서 다음의 (표 5)와 같습니다.

To prevent mistakes, be sure to check the clamp/unclamp 
signal.
The pressure setting of the pressure switch is as follows, 
according to the methods of clampin. (See Table 5)

The worm shaft and the worm wheel are manufactured with 
superior materials under a precision process. A dual-lead 
worm is applied as a countermeasure against the backlash 
of the worm shaft and the worm wheel. This method is 
implemented with a differentiated lead between the left-and 
right-hand teeth surfaces of the worm shaft, which shifts the 
worm shaft towards the spindle.

This dual-lead worm method is acknowledged as the best 
method both theoretically and practically. 
It enables very fine adjustment of the backlash of the teeth. 

The backlash of the worm gear was adjusted appropriately 
at the factory; however, readjustment may be necessary 
after a long period of operation. The table below presents 
the optimal value of the backlash. The value is measured 
when the machine has cooled down, some time after shut 
down. Consequently, the real backlash value after a period 
of operation is less than the optimal value due to thermal 
expansion. 

7-1     웜기어의 백래시 조정

백래쉬가 너무 작으면 웜기어 소착의 원인이 
됩니다. 

압력스위치 및 솔레노이드밸브 사용시에는 
반드시 전기회로도를 참조해 주십시오.

Clamp / Unclamp 확인용 압력 스위치

Clamp / Unclamp Pressure switch for checkup

SOLENOID VALVE

BODY

SERVO MOTOR

[ 그림 / Fig 3 ]

[ Air Clamp ]

6-2     클램프·언클램프 
           확인장치

6-2     Clamp, Unclamp 
           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 the electric 
wiring.

Solenoid ON 

 table unclamp

Solenoid OFF 

 table clamp

Refer to the electric wiring diagram 
when using a pressure switch and 
solenoid valve.

!

CAUTION

에어클램프 / Air Clamp

클램프 확인 / Confirm clamp

0.29 MPa (3.0 kgf/㎠)

(PS1000-R06 [SMC])

언클램프 확인 / Confirm unclamp

0.05 MPa (0.5 kgf/㎠)

(PS1100-R06 [SMC])

[ 표 / Table 5 ]

6-3     클램프·언클램프용
           솔레노이드 밸브

6-3     Solenoid valve for 
           Clamp, Unclamp

!

CAUTION

주 의

7. 

구성품 설명 및 유지보수·조정
/ Description, maintenance 

and adjustment of components

IMPORTANT

유의사항

If the backlash is a little bit excessive, 
the worm gear may seize up.  

IMPORTANT

7-1   

  

Adjustment of Worm

         Gear Backlash 

백래쉬를 조정할 때는 아래와 같은 방법으로 현재의 백래쉬를 먼저 
측정합니다. 측정 후에 백래쉬를 조정합니다.

To adjust the backlash, measure the current backlash with the 
following procedure. Adjust the backlash after measurement.

[ 표 / Table 6 ]

* 적합한 백래쉬

* Appropriate backlash

1) 테이블 상면의 T-SOLT 측면에 다이얼게이지를 셋트합니다.

2) 테이블 상면의 탭홀(TAP HOLE)을 이용하여 평강(평평한 강철) 또는
    환봉을 넣고 테이블을 천천히 회전시켜 웜휠의 치가 웜샤프트에 꼭 끼는
    위치에서 손을 떼고 다이얼게이지의 값을 알아냅니다. 
    다음에 반대방향에 동일 조건으로 웜샤프트에 치가 꼭 낄 때까지 
    회전시킵니다.
    이때의 측정값의 차가 백래시량입니다.

3) 상기 측정은 테이블을 회전시켜 45°마다 8개소에서 실시하고 앞서
    기록한 적정값과 비교해 주십시오.
    적정값보다 빗나가는 경우에는 이하에 나타낸 요령으로 조정해  
    주십시오. 백래시의 최소값이 앞에 기재한 적정값으로 되도록 
    조정해주십시오. (그림 4)

1) Set a dial gauge on the side of the T-SOLT on top of the table.

2) Insert a steel plate or rod into the tap hole on top of the table,   
    then turn the table slowly. When the teeth of the worm wheel 
    contact the worm shaft firmly, stop turning and read the
    measurement on the dial gauge. Turn the table in the opposite 
    direction until the work wheel teeth contact the worm shaft 
    firmly, and read the dial gauge. The difference between the two 
    values is the backlash.

3) Perform the above measurement 8 times at every 45°position 
    of the table. Compare the measurements with the optimal  
    value presented earlier. Adjust the deviation from the optimal 
    value by the following procedures. Adjust the backlash so that 
    the minimum value is the same as the optimal value. (Fig 4)

7.1.1. 웜기어 (Worm Gear)의 백래시 측정방법

7.1.1. Method of Measuring 

         Worm Gear Backlash 

테이블 끝단에서의 원호 길이 
/ Length of the arc from the tip of the table 

테이블 형식 / Appropriate backlash

중심에서 반경
/ Radius from
   the center

피치원 반경
/ Pitch circle radius 
테이블 끝단
/ Tip of the table

13~38

S-200

S-200L

S-200F4

76.5

105

13~41

S-250i

S-250Li

S-250F4/ F8

91

125

14~41

S-320i

S-320Li

S-320F8

140

160

13~39

S-170

S-170L

S-170F2

64

87.5

13~20

S-120

S-120L

S-120F2

53

62

mm

mm

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...

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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...

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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...

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