Nakanishi RA-271E Operation Manual

90
° Angle Spindle
OPERATION MANUAL
Thank you for purchasing 90° Angle Spindle " RA - 271E ". This Spindle is designed for grinding, small diameter
drilling and milling, etc. The E3000 CONTROLLER, Brushless Motor or Air Motor and Air Line Kit are rquired to
drive this Spindle. Read this and all the associated component Operation Manuals carefully before use. Always
keep this Operation Manual in a place where a user can referred to for reference at any time.
1 . CAUTIONS FOR HANDLING AND OPERATION
■ Read these warnings and cautions carefully and only use in the manner intended.
■ These warnings and cautions are intended to avoid potential hazards that could result in personal injury to the
operator or damage to the device. These are classi ed as follows in accordance with the seriousness of the risk.
Class Degree of Risk
A safety hazard could result in bodily injury or damage to the device if
WARNING
the safety instructions are not properly followed.
A hazard that could result in light or moderate bodily injury or damage
CAUTION
to the device if the safety instructions are not followed.
WARNING
① This Spindle is not a hand tool. It is designed to be used on CNC machines or special purpose
machines.
② Do not touch the cutting tool while it is running. It is very dangerous.
③ Wear safety glasses, dust mask and use a protective cover around the Spindle whenever the
Spindle is rotating.
④ Never connect, disconnect or touch the Power Cord Plug or Motor Cord Plug with wet hands.
This may cause an electric shock.
⑤ Never operate or handle the Spindle and motor until you have thoroughly read the Operation
Manuals and safe operation has been con rmed.
1 ） To prevent injuries / damages, check the Spindle, motor and cutting tool for proper
installation, before operating the Spindle and motor.
2 ） Before disconnecting the Spindle and motor, always turn the control power off and turn the
compressed air supply to the CONTROLLER off. Then it is safe to remove the Spindle and motor.
⑥ When installing a Spindle to a xed base, make sure the xed base is grounded in order to
avoid the risk of an electric shock.
⑦ When installing a tool, tighten the collet chuck correctly and check again the collet chuck
before use. Do not over-tighten the collet chuck. This may cause damage to the Spindle.
⑧ Do not use bent, broken, chipped, out of round or sub-standard tools, as this may cause them
to shatter or explode. Tools with fractures or a bent shank will cause injury to the operator.
When using a new tool, rotate it in a low speed and increase speed gradually for safety.
⑨ Do not exceed the maximum recommended allowable tool speed. For your safety, use speeds
below the maximum allowable speed.
⑩ Do not apply excessive force. This may cause tool slippage, tool damage, injury to the
operator or loss of concentricity and precision.
CAUTION
① Do not exceed the maximum allowable motor speed 20,000min -1 (rpm).
② Do not drop or hit this Spindle, as shock can damage to the internal components.
③ Be sure to clean the collet chuck, the inside of the spindle before replacing the tool. If ground
particles or metal chips stick to the inside of spindle or the collet chuck, damage to the collet
chuck or spindle can occur due to the loss of precision.
④ When cleaning a Spindle, stop the motor and remove debris with a soft brush or a cloth. Do
not blow air into the Spindle with compressed air as foreign particles or cutting debris may
get into the ball bearing.
⑤ Always clean the tool shank before installing the tool in the spindle.
⑥ When sizing the correct collet chuck size to the tool shank diameter, a tolerance of + 0 〜
- 0.01mm is strongly recommended. A tool shank within the + 0 〜 - 0.1mm range is mountable,
however, this may cause poor concentricity and or insuf cient tool shank gripping force.
⑦ Select suitable products or tools for all applications. Do not exceed the capabilities of the
spindle or tools.
⑧ Do not stop the supply cooling air for motor during operation of the machine.
Removing the air pressure from the Motor / Spindle causes a loss of purging, allowing the
Motor / Spindle to ingest coolant. This will cause damage to the Motor / Spindle.
⑨ Carefully direct coolant spray to the tool. Do not spray directly on the Spindle body. If large
amount splay directly on the Spindle, it may cause excess load of the motor rotation with loss
of durability to the Spindle.
⑩ Stop working immediately when abnormal rotation or unusual vibration are observed.
Immediately, please check the content of section " 13. TROUBLESHOOTING ".
⑪ Always check if the tool, collet chuck are damaged before and after operating.
⑫ If the collet chuck show signs of wear or damage, replace it before a malfunction or additional
damage occurs.
⑬ After installation, repair, initial operation, or long periods of non operation, please refer to
section " 11. BREAK-IN PROCEDURE " detailed in Table. 2 When checking the Spindle, no
vibration or unusual sound should be observed during rotation.
⑭ Do not disassemble, modify or attempt to repair this Spindle. Additional damage will occur
to the internal components. Service must be performed by NSK NAKANISHI or an authorized
service center.
⑮ When using this Spindle for mass production, please consider the purchase of an additional
Spindle to be used as a back-up in case of emergency.
2 . BASIC PACKAGE
When opening the package, check if it includes all items listed in " Table.1 Packing List Contents ".
In the event of any shortage, please contact either NAKANISHI (see the " 4. CONTACT US " section) or your local dealer.
Table. 1 Packing List Contents
RA - 271E Spindle ・・1pc. Collet Chuck
3.175mm (CHS - 3.175)・・1pc.
(For U.S. market
(CHS - 3.175))
OM-K0424E 002
Inspection Card・・1pc. Operation Manual・・1set
Inspection Card
OPERATION MANUAL
* The collet chuck is attached to the Spindle.
3 . WARRANTY
We provide a limited warranty for our products. We will repair or replace the products if the cause of failure is due
to the following manufactures defects. Please contact us or your local distributor for details.
① Defect in manufacturing.
② Any shortage of components in the package.
③ Where damaged components are found when initially opening the package.
(This shall not apply if the damage was caused by the negligence of a customer.)
4 . CONTACT US
For your safety and convenience when purchasing our products, we welcome your questions.
If you have any questions about operation, maintenance and repair of the product, please contact us.
Contact Us Contact Us
For U.S. Market
Company Name :
Industrial Div.
Business Hours : 8:30am to 17:00pm (CST)
(closed Saturday, Sunday and Public Holidays)
U.S. Toll Free No. : 800-585-4675
Telephone No. : 847-843-7664
Fax No. : 847-843-7622
Web Address : www.nskamericacorp.com
For Other Markets
Company Name :
Business Hours : 8:00am to 17:00pm
(closed Saturday, Sunday and Public Holidays)
Telephone No. : +81 (0) 289-64-3520
e-mail Address : webmaster-ie@nsk-nakanishi.co.jp
5 . FEATURES
① These Spindles are capable of working on corners dif cult to work or un t for working with straight type Spindle.
② The Spindle housing is made from precision ground, hardened, stainless steel (SUS) with an outside diameter
of 30 mm.
③ Various sizes of collet chucks are available CHS 0.8mm - 3.0mm. Standard collet chuck is CHS 3.0mm or
CHS 3.175mm. (For U.S. market CHS 3.175mm.)
6 . SPECIFICATIONS AND DIMENSIONS
6 - 1 Speci cations
Model RA - 271E
For Air Motor 12,700min
Maximum rotating
speed at the tool
For Brushless Motor 13,330min
Maximun Motor For Air Motor 19,000min
Rotation Speed For Brushless Motor 20,000min
For Air Motor AM - 3020R / L, AM - 3020RA / LA
Applicable Motor
EM - 3060, EM - 3060J, EM - 3060J - 2M, EM - 3030J,
For Brushless Motor
EM - 3030J - 2M
Reduction Ratio 1 / 1.5
Standard Collet Chuck (CHS - 3.0)
Weight 240g
CAUTION
Use less than the maximum allowable motor speed 20,000min
DO NOT exceed the maximun allowable motor speed 20,000min
< Option >
Collet Chuck (CHS - □□ ) 0.8mm 〜 3.0mm in 0.1mm increments and
6 - 2 Outside View
3.0mm (CHS - 3.0) or Wrench (7 x 5.1),(8 x 5),(22 x 27)
・・Each 1pc.
*
3.175mm
7 . CONNECTION OF THE SPINDLE TO THE MOTOR
Align the thread on the front end of the motor
and the rear of the Spindle, and turn the Spindle
clockwise. If the drive shaft of the motor does not
engage properly to the drive dog on the Spindle,
it may only turn approximately two threads before
stopping.
DO NOT FORCE THEM TOGETHER. Loosen the
Spindle from the motor, rotate the Spindle shaft
by hand then re-try. The drive shaft and the drive
dog must be fully engaged. When fully engaged,
secure the motor and Spindle using the provided
27mm wrench (Fig. 2).
8 . CHANGING THE TOOL
9 . REPLACING THE COLLET CHUCK
-1 (rpm)
-1 (rpm)
-1 (rpm)
-1 (rpm)
3.0mm
-1
.
-1 for the Spindle.
2.35mm, 3.175mm
17.4
7.9 32.7
65 (13)
Fig. 1
CAUTION
Make sure your hands and all interlocking parts of the Spindle and motor are clean before
connecting the motor to the Spindle. This is critical in preventing contaminants from entering the
motor or Spindle.
Fig. 2
CAUTION
Do not tighten the collet chuck without inserting a tool or dummy bur as this will result in damage
to the collet chuck.
RECOMMENDATION
Please set the cutting tools to minimize the overhang amount. 13mm is the maximum amount of
overhang to maintain high accuracy and safety.
① Set the provided 7mm wrench on the Spindle.
Wrench 7mm Tool
② Place the provided 5mm wrench on the
chuck and turn it counterclockwise to loosen
the collet chuck and remove the tool.
③ Clean the collet chuck, then insert the new
tool and tighten the collet chuck by turning
clockwise. Do not over-tighten.
Fig. 3
① Remove the tool according to the section
Loosen
" 8. CHANGING THE TOOL " procedure
above (Fig. 3).
Spindle Shaft
② Place the provided 7mm wrench on the
spindle shaft, and turn the top of the collet
chuck counterclockwise to remove the collet
chuck (Fig. 4).
③ Install the new collet chuck into the Spindle
by turning it clockwise.
Fig. 4
Transmission Clutch
Tighten
27
Turn
Collet Chuck
Wrench 5mm
Loosen
Tighten
Collet Chuck
Wrench 7mm