Cuttermasters ACG-1450 Operator's Manual

SAFETY INSTRUCTIONS

AND OPERATOR’S MANUAL

FOR

ANNULAR CUTTER

REGRINDING

MACHINE

ACG-1450

Cuttermasters

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Canada
[phone]
[phone]

Email: [e-mail]

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TABLE OF CONTENTS

I DESCRIPTION .............................................................................................. 3

1.

Directed use ................................................................................................... 3

2.

Description of work ........................................................................................ 3

3.

Technical data................................................................................................ 3

4.

Equipment ...................................................................................................... 4

II. GENERAL SAFETY ADVICE ........................................................................ 5

1. User’s duty .................................................................................................... 5

2. Basic safety advise ....................................................................................... 5

3. Demands for operators ................................................................................. 6

4. Special risks .................................................................................................. 6

III. INSTALLATION ............................................................................................. 7

1. Work environment .......................................................................................... 7

2. Before first installation.................................................................................... 7

IV. TRANSPORTATION AND STORING ............................................................ 8

V. OPERATION .................................................................................................. 9

1. Components description ............................................................................... 9

2. Adjusting and configuration.......................................................................... 10

2.1 Dividing disc exchange ...................................................................... 10

2.2 Core drill adjusting .............................................................................. 11

3. Regular work ................................................................................................ 12

3.1 Cutter Tooth re-sharpening .............................................................. 13

3.2 Cutter Gullet surface grinding ............................................................ 17

4 Grinding disc replacement .......................................................................... 19

VI. MAINTENANCE AND REPAIR .................................................................... 20

1. Cleaning and greasing ................................................................................ 20

2. Repair ......................................................................................................... 20

VII. EC DECLARATION OF CONFORMITY ...................................................... 21

VIII. MACHINE TEST CERTIFICATE ................................................................. 22

IX. WARRANTY CARD ................................................................................... 23

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I.

DESCRIPTION

1. Directed us

e

ANNULAR CUTTER REGRINDING MACHINE ACG-145 0 is specifically designed
for re-sharpening HSS core drills. Machine is not recommended for any other
applications.

In the case that the ACG-1450 is used for any other purpose, then safety cannot be
assured. In such case the operator is responsible for any machine’s damage or injury
of people in the vicinity. Manufacturer recommends to read manual user very
carefully, especially points regarding basic safety advice.

2.

Description

of work

The ACG-1450 enables easy core drills (annular Cutter) re-sharpening. Because of

it’s solid and precise construction, low supply energy demand and small dimensions
the machine can be used in any place and can be installed ready for use in a short
time. The ACG-1450 was designed as user friendly machine, and our operator
manual describes how to make simple work of regrinding Cutters.

3. Technical data

Dimensions LxWxH. [mm]

18 x 16 x 14

Weight Net [kg]

44 Pounds

Supply [V]

110V V AC

Motor [V / amps / rpm.]

110 / 12 / 2600

Movement
length

Motor guide

2.755

Guiding slide

6.377

Noise level dB(A)

<70

Grinding disc inert time [s]

10

Grinding disc

Electroplated, CBN grinding disc ø 5 inch
Diamond Available

Cutter’s clamping [mm]

19 (Weldon shank)

Insulation class

Ι

Max cutter’s length

2 inch

Scope of the cutter’s diameter

Ø 9/16 - ø2.0 inch

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4. Equipment

The Annular Cutter Regrinding Machine ACG-1450 is delivered to the customer in
carton packing, ready to use. The machine is completed with standard equipment,
below:

- set of dividing discs

- hexagonal keys s=2,5 and s=4,

- grinding disc for tool flank (Gullet) grinding

- grinding disc for cutting surface (Cutting Egde) grinding

- Operators Manual with warranty card.

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Cuttermasters

NY,

USA-ON,

Canada • (800)

417-2171

• (613)

523-7753

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5

II. GENERAL SAFETY ADVICE

1. Operators duty

The ACG-1450 machine was designed and made after risk level analysis and after
selection of current harmonized standards in conformity with further technical
specifications. Safety operating is ensured only if operator follows with further
directions.

The operator has to pay special attention and be sure that:

•

Machine is used as directed

•

Machine is efficient,

•

All elements strictly joined with safety work are regularly controlled

•

Personal protection equipment is efficient and always available

•

Operators manual is always close to the machine

•

None of safety and warning label is removed from the machine.

2. Basic safety advic

e

Operators Manual shall be kept always close the machine in readable condition and
available for any person operating with machine. In addition, the users own company
instructions regarding security and health requirements have to be available for
operators.

Symbols placed on the machine point out that there is a danger to human life and
health. Labels placed on the machine have to be kept in good readable condition
Damaged or not readable labels stall be replaced immediately.

Always wear safety glasses during machine work.
Grinding dust can be danger for your eyes.

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Remove of the grinding disc protection is only permissible for
disc replacement. Protective shroud must always be in place during
operation.

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Before grinding disc replacement or machine displacement always
disconnect it from electric supply.

WARNING!!! LASER. Machine ACG-1450 is equipped with laser.
In order to avoid eye injury laser CANNOT be directed into the

human eyes.

3. Operating requirements

Only people familiar with this Operators manual, can be allowed to work with ACG­1450 core drill grinding machine. Any operator who did not get to know this
operators manual contents before starting the machine, maintenance or service,
may cause a dangerous situation for the user’s and neighbouring persons safety.

Do not operate the machine whilst being under the influence of alcohol.

4. Special ri

sks

Before start up:

•

Check for any visible damages. Defects must be removed immediately.

•

Machine can work only when is in 100% efficient

•

Do not start machine if some damages or lack of equipment are observed

•

Do not start machine in vicinity of flammable materials or in vicinity of fuel

vapours.

•

Check up regularly power supply cord.

- Repair open electrical connections,

- Replace electric cables immediately if damaged,

- Never clean up electric equipment with water

•

Do not dismantle safety protection elements

Machine modification
No modifications of the machine are allowed. Only original parts should t be used in
order to replace some spare parts and accessories. Mentioned spare parts are
constructed only for this machine. Read the chapter “General Safety Advice”

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III.

INSTALLATION

1. Work environment

Use ACG-1450 machine only in dry rooms
Environment temperature +5° ÷ +50° ·C
Humidity max. 90% (protect against condensing)
Place machine on solid bench
Pay attention for safe machine placing
Machine’s work place has to ensure a vibration free motor work

To avoid machine’s damage and series injury when starting the
machine, following steps are necessary to be taken:

Ensure that all parts and tools which not consist the machine
( allen keys, screws) are removed from machine vicinity.

Check condition of grinding disc.
Read also the chapter” General Safety Advice”

Always wear safety gl

asses

.

2. Check before first installation

•

Check the condition of electric connections, and in case of extension cord wear,

check up the condition above. In the case of any damage, the cord should
be immediately replaced. This operation must be carried out by qualified
electrician or in a certified service point.

•

Check connections

•

Be sure he machine is connected to the correct voltage Check if the electric

parameters with this manual and on the machine’s name plate.

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Warning!

•

Check up if slide way moves without excessive frictional
resistance. Machine can be only connected to the net equipped with
earth protective pin. In case of non correct connection of grinding
machine an electric shock may occur.

•

In case, the plug does not suits to the socket, a qualified
electrician intervention is necessary, in order to fit the plug and the
socket. Any wilful exchanges in electric circuit of grinding machines
are permissible.

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Never start the machine if some equipment element is missed, or machine is not
carefully assembled. Not respecting this prohibition may cause the accident and
serious injury. Avoid fingers contact with grinding disc, or other dangers in case the
grinding disc pushes away from the shaft.

IV. TRANSPORT AND

STORING

Storing conditions
Machine is delivered in original factory packing. We recommend for long-term storing

to keep machine in dry surroundings in factory pacing, in temperature from -20° C do
50° C.

Transport conditions
Machine is designed for hand loading and transporting in work place. For long

distances can be transported by any transport medium. Please take care of you to
prevent the machine’s movement on slide ways under inertial force.

Before machine displacement:

•

Turn off machine with button on position”0”

•

Pull out the power cord from the socket

•

Check up the condition of screws elements.

•

Carry over the machine holding the machine’s base with both hands

Warning

!

In any case:

•

Do not use power cord to move the machine

•

Do not carry over machine with rotating grinding

machine

-in order to change the machine’s position.

disc when replacing the

•

Avoid contact with the disc guard, adjusting elements and laser indicator body.

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V.

OPERATION

1.

Components description

1. Motor

2. Motor feed screw

3. Laser

4. Motor switch

5. Grinding disc guard fixing

6. Grinding disc guard

7. Laser arm

8. Motor slide way

9. Wellhead support

10. Core drill holder support

11. Dividing disc

12. Support slide way

13. Star wheel with screw

14. Bumper handle

15. Micrometric screw

16. Weldon Arbor 19,05mm

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2.

Adjusting

and configuration

2.1.

Dividing

disc exchange

Dividing discs (point 6.1. pos. 11) of ACG-1450Grinding machine are
responsible for

accurately re-sharpening of core drill depending on the number of teeth. The basic
equipment of machine consist of following dividing disc: T - 8 for core drills with 4 or 8
teeth, T - 10 for core drills with 5 or 10 teeth, and T - 6, T - 7, T - 9, (for core drills
with 6, 7, 9 teeth).

Dividing disc exchange

Choose the dividing disc suitable for the number of
core drill teeth. In order to exchange the dividing
disc, first turn the star wheel in CW direction until the
fixing screw (a) appears in upper position. Tight the
bolt (b) with hex key 2,5. Untighten the screw with
star wheel (pt 6.1. pos. 13) in CCW direction

Untighten screw (a) on dividing disc (use hex key
2,5)
and pull out the disc.

Dividing disc assembly

Place the chosen dividing disc on the spindle. It is
important to draw attention, that screw (a) appears
under the spindle slot (see drawing.). Screw gently
the screw (a) with hex key 2,5) to position the slot
(do not tighten). Tight the screw with star wheel in
CW direction. Next tight screw (a) placed on dividing
disc and loosen the screw (b) (upper drawing).

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2.2. Core drill adjusting

rs

Warning! Edges of core drills are sharp. Please avoid injury!

Turn the arbor holder onto position 90 ° (see
drawing.)
When placing the core drill inside the arbor,
please draw your attention the fixing screw
locates with the cylindrical surface of Weldon
shank ( not flat surface) of the core drill. (Do
not tighten the screw). This is necessary to
avoid the core drill position change during
screw tight, what could result incorrect set up.

The laser ray enables core drill accuracy
positioning in the arbor (right drawing) .
Wheel head support (pt 6.1. pos. 9) has got
white line (see drawing). During laser ray
positioning, its light must be always on this line

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located . This is the method of basic laser
beam positioning or its new positioning.

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With the spindle of laser indicator guiding, set up laser indicator, to fit exactly to the
external cutting edge (see drawing).
Laser ray is switched on by small button placed on cylindrical indicator’s body. Now
the user should turn the cutter slightly in the arbor, in order that the laser ray lights up
exactly the on the external cutting edge . Fix the cutter in this position tightening the
screw, placed on the cylindrical surface of Weldon arbor with hex key 4.

!! MARK THE POSITIONED TEETH WITH THE MARKER!

3. Regular work

Always wear glasses during re-sharpening works.

There are two tooth forms of core drills. Core drills with flat tooth and with V-shape
tooth. Standard type core drills are V shape tooth. Non-standard core drills are
equipped alternately with flat and V-shape tooth. This machine is designed to re­sharpen in first line tooth on internal side and next on external side. In case of non­standard core drill re-sharpening first are re-sharpen V-shape tooth and next flat
tooth.

3.1. Core drills re-sharpening

Core drills, although available in two sorts are manufactured by different
manufacturers.
If core drills manufacturer provides user with information regarding re-sharpening
Parameters of tool, it is recommended to apply this settings. The following data
below gives a guide only of the required angle settings

Tooth no

HSS Steel

Support Scale

Arbor angle

Surface

Intern.

Extern.

Intern.

Extern.

4

20°

7,5°

7,5°

15°

5

20°

7,5°

7,5°

15°

6

20°

7,5°

7,5°

15°

7

20°

7,5°

7,5°

15°

8

20°

7,5°

7,5°

15°

9

20°

7,5°

7,5°

15°

10

20°

7,5°

7,5°

15°

11

20°

7,5°

7,5°

15°

12

20°

7,5°

7,5°

15°

Operator’s manual for Annular Cutter Grinding Machine GRN1

13

Core drill setting for internal surface re-sharpening

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First step.
Set up the angle on wheel head support at 20 °

Set up the arbor angle at 7,5 °
!! Remember to use the correct dividing disc !!

After both angles settings, move the cutter with the guide and motor feed mechanism
to the grinding disc. Re-sharpen the tooth which is directed into the middle of grinding
disc, nearest to the “3 o’clock” position. (This one which position was settled up with
the laser ray and marked with the marker).

Move the support up to the tooth contact with the grinding disc. Lock the handle of
the bumper in this position (see drawing).

With micrometric screw move back the guide slightly, just so the grinding disc did not
touch the next tooth.

Start re-sharpening the tooth from internal surface, mowing the guide forward and
backwards. Motor feed should be realised carefully and with the same value for all
teeth.

After the first tooth re-sharpening , move back the guide and turn the star wheel in
CW direction until the dividing disc will match the next position. Do not change the
motor feed setting. Repeat above work until all teeth will be re-sharpened.

Operator’s manual for Annular Cutter Grinding Machine GRN1

15

Core drill setting for external surface grinding

Cuttermasters

Set up the angle 7,5 °on
wheel head support

Set up the 15 °angle on
arbor

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After setting the angle, move the cutter with the guide and feed motor mechanism
towards the grinding disc.

Do not re-sharpen the tooth marked earlier with the marker, but the next one placed
below.
Move the support until the teeth will get in touch with grinding disc. Lock the
bumper’s handle in this position (see drawing).

With the micrometric screw, move back the guide, just to avoid the contact of next
tooth with grinding disc.

Now you can start the sharpening process from the marked site, moving the guide
forward and backwards. The motor’s guide feed should be adjusted carefully and
with the constant value for each tooth.
After the first tooth has been sharpened, move back the guide, turn the star wheel in
CW direction, down to the dividing disc new position.

Do not change the motor feed adjustment. Repeat described above functions till all
teeth will be re-sharpened. Carry out the process over several passes until the
cutting edge is completely reground.

3.2. Gullet grinding

After intensive use, and after several re-grinds, it is necessary to reform the gullet
area between each tooth, to ensure that the cutter performs its hole cutting operation
correctly. Without a correct gullet, the cutter will not release its solid slug after the
operation.
In the case of reforming the gullet, the second grinding disc with a different geometry
of grinding surface, should be placed on machine’s spindle.

Operator’s manual for Annular Cutter Grinding Machine GRN1

17

Adjust the angle 50 °on support scale
Adjust the angle 25 °on the arbor scale
Mentioned adjustments are not obligatory for all cutters types. Move the cutter into
the grinding disc ( when motor is ON) and if necessary correct the cutter adjustment .
The angle can fluctuate in range 15° ÷ 30°

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After setting the cutter position, move the core drill with guide and motor feed
mechanism towards the grinding disc. Grind the gullet area of the core drill with
above mentioned grinding disc. Do not grind the tooth which was earlier marked with
marker, but the surface of the next tooth.

Move the core drill along the grinding disc in a stationary condition till the Gullet
touches the diamond disk. Set the lateral stop and the fine tuner in such a way that
the Gullet surface can be ground.
Now grind the Gullet Surface which you have set. Delivery through the fine tuner
should be low, and it should be uniform for all the Gullet surfaces. After grinding the
first Gullet surface, pull the guidance carriage back and turn the star -shaped screw
head in the clockwise direction (direction of arrow) right up to the next section. You
can position the next stretched surface in this manner. Do not alter the motor feed
and the fine tuner position.
Repeat the grinding process till all the Gullet surfaces have been ground.

Operator’s manual for Annular Cutter Grinding Machine GRN1

19

4.

Grinding

disc repl

acement

Unplug the machine from the power supply before grinding disc replacement
Remove core drill from the arbor

Grinding disc replacement

Turn out the wing-nut fixing down and up.(see
drawing) remove the guard. The grinding disc is
equipped with hexagonal screw placed on the flange.
Loosen screw with hexagonal key 2,5 and remove the
grinding disc from machine spindle.

Grinding disc assembly

Place the proper grinding disc on machine’s spindle
(keep approx. 5mm distance from internal surface of
guard) and tighten the screw. Then re-assemble the
grinding disc guard.

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VI. MAINTENANCE AND REPAIR

1. Cleaning and greasing

The ACG-1450 annular cutter grinding machine should be cleared up from the dust
particles at least once a week with delicate brush. After clearing all movables
parts, the unit should be greased with a thin layer of machine oil.

Motors guides shall be greased every 6 months with thin layer of grease on the
internal surfaces.
Warning!!
Cleaning machine with water is not permissible. Water use may cause machine’s
defect or damage.

Before cleaning machine it should be

unplugged

from the power supply

.

2. Repair

Repair of machine main components such as guides or wheelhead, can be made
only by the manufacturer. Mentioned parts are responsible for accurate machine’s
work.

Operator’s manual for Annular Cutter Grinding Machine GRN1

21

VII. EC DECLARATION OF CONFORMITY

Declaration

of

compatibility

We

Cuttermasters

declare with full responsibility that this product:

Annular Cutter

Grinding

Machine

ACG

1450

Is produced in accordance with the following standard(s)

EN 50144-1, and satisfies safety regulations of guidelines: 2006/95/EC, 2006/42/EC

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VIII. MACHINE TEST CERTIFICATE

Machine control

card

P roduct:

ACG-1450

Serial

No.

Date of test:
Electric test

results:

T est

Result

T est with sinusoidal

voltage

of 1000 V and frequency 60 Hz

Resistance of the protective circuit

[Ω]

T he above-mentioned product meets the requirements of safe usage as prescribed in standard

IEC-745

Name of tester

Quality Control

Operator’s manual for Annular Cutter Grinding Machine GRN1

23

IX . WARRANTY

CARD

WARRANTY CODITIONS

Annular Cutter Grinding Machine

ACG-1450

1. The Manufacturer grants the Buyer a guarantee for a 12 months period from
date of sold.

2. The Buyer lost the warranty in case of:

- Warranty sense remove;

- Non permissible repairs or changes;

- Use of machine not correct with destiny described in Machine’s Manual;

- Defects which occurred to be caused another than material defects or

assembly mistakes.

3. Guarantor is responsible to repair the machine in reasonable time of 14 days
from delivery time the machine to the service point, and 21 days in case of
delivery by post.

4. Warranty does not cover: safety fuses, grinding disc, regular equipment of
machine , electric brushes of the motor and the damages may occur during
regular wear of machine .

5. The Seller is not responsible for damages of machine resulted by not proper
way of transport.

Description

Produce date:............. ……....................Serial No...................................................

Purchase date...........................................................................................................

Seller’s description and signature.............................................................................

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