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JIS B 6543 (1991) (English): Veneer knife

grinders -- Test and inspection methods

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 UDC 621.924.001.4:674.24.05

JAPANESE I NDUSTRIAL STANDARD

Veneer knife grinders-

Test and inspection methods

JIS B 6543- 1991

Translated and Published

by

Japanese Standards Association

Printed in J "pan 7 S
PROTECTED BY COPYRIGHT
 In the event of any doubt arising,
the original Standard in Japanese is to be final authority,

PROTECTED BY COPYRIGHT
 UDe 621.924.001.4:674.24.05
JAPANESE INDUSTRIAL STANDARD J I S

Veneer knife grinders - B 6543-1991

Test and inspection methods

1. Scope

This Japanese Industrial Standard specifies the test methods for

function, running performance and rigidity, and the inspection methods for
static accuracy and machining accuracy of veneer knife grinders with a tool
fitting surface of length not less than 2000 mm up to not more than 5800 mm.

Remarks 1. Veneer knife grinder is the machine which makes grind

finishing by reciprocating movement of the rotating grinder
over the whole range of tip length of the cutter fixed on
the tool fitting stand.

It .is used mainly for grinding the cutter for veneer lathe,
slicer and clipper (see JIS B 0114).

2. Applicable standards to this Standard are as follows:

JIS B 0114-Glossary of terms for wood working machinery.

JIS B 6507-General code of safety for wood working

machinery.

JIS B 6521-Methods of measurement for noise emitted by wood

working machinery.

JIS R 62l0-Vitrified grinding wheels.

3. The units and numerical values given in { }in th.is

Standard are based on the traditional units and are
given for reference.

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 2
B 6543-1991

2. Function inspection methods

The function test on veneer knife grinders shall comply with Table 1.

Table 1. Function test

No. Test items Test method

1 Electric device Test insulation condition once each before and

after running test.

2 Fitting and removal Test smoothness and positiveness for fitting and
of wheel removal of wheel, and fastening of screw.

3 Swing anglee) Test smoothness of operation and exactness of

adjusting device indication in adjusting device for swing angle
of wheel of wheel.

4 Starting, stopping Let wheel spindle run about 10 times and test
and running of IPositiveness of operation and number of revolution.
wheel

5 Fitting and removallTest smoothness and positiveness for fitting and

of veneer knife removal of tool fitting and fastening of screw.
I

6 Rotating device of Rotate tool fitting stand and test smoothness

tool fitting stand of operation and exactness of indication ..

7 Feeding device in Test smoothness of operation for feeding in depth

depth of cut of 1of cut of wheel and exactness of indication.
wheel
I
8 Starting, stopping ILet wheel fitting stand run reciprocally about 10
and running of !times and test the functional smoothness and
wheel fitting stand/uniformity for whole length of movement.
!
9 Cutting fluid Let cutting fluid supplying device work and test
supplying device positiveness of its function.

10 Dust proof device Test functional smoothness and positiveness.

of sliding surface

11 Feed direction Test functional smoothness and positiveness.

changing device of
wheel fitting stand

12 Safety device Test functional smoothness and positiveness for

worker's safety device and machine protective
device. (See JIS B 6507)

13 Lubricating device Test functional smoothness and positiveness such

as oil tightness and adequate supply of oil.

14 Accessory device Test functional smoothness and positiveness.

Note (1) It is called "run out angle" as well.

Remarks: Those not equipped with the said function in accordance with type
may be omitted from the test on the corresponding item in Table 1.
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 3
B 6543-1991

3. Running Test Methods

3.1 No load running test No load running test shall be that let the
wheel rotate, continue the reciprocating motion o.f wheel stand for 30 to 60
minutes and observe the required power and the noise after stabilization of
bearing temperature, fill in each item specified in Record Form 1 in Table
2, and observe by feeling not to have abnormal vibration.

Measurement of noise shall be in accordance with JIS B 6521.

Table 2. Record form 1

Temperature ('C) Noise

No Description

I Bearing Room I
dB
(h.min) Marked I Measure I Front, Rear temperature,
(A)

Remarks 1. For those with speed change gear for axis rotative speed, the
rotational speed under two conditions, at least, including the
maximum rotational speed shall be recorded.

2. Measuring condition of noise shall be written in the column of

description.

3.2 Load running test Load running test shall be that grinding by
veneer knife is carried out to measure the required power and the noise so
that each item specified in Record Form 2 in Table 3 is filled in and it is
observed by feeling not to have abnormal vibration, and check the condition
of the ground surface.

Measurement of the required power shall be carried out in testing under

the condition that the depth of cut is changed at the fixed speed or that
feeding speed is changed at the fixed depth of cut.

Measurement of noise shall be carried out in accordance with JIS B 6521.

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B 6543-1991

Table 3. Record form 2

Veneer knife Wheel Grinding condition Required power
No. Nollie Descrlp-
Dimension Material Dimension
'0
1 Cutting I Input tion
c: fluid

T
c: -,-I
s;l"O 0 ... ;; 4-;
-,j OIl 0
I 6 ,..
~
OJ

I UJ 'I""!
x
ni U
"" ....0
"0 "'-' \..j
P-
...ro ~ ill
...
(J) '0
III
c:
~
Ei
til <J)
0.
<l.l I III
3
~
Il!
I UJ ...i Ul ~ rl
.--I
OJ
N

.~
'.-1
'0
'"'
..c: 8
-~
if;
g.
0
t:l.

I~
or<
0.
'j 'Cl
til
(IJ
c:
-.-I
'5 '" '"'
U
OM
(IJ
.-I
oJ (I)
.,..c: .:::'
blJ
w ,~.... M 01) ""'0 rl

~
i:' Q) oJ
c:
'0
Ul
.;;
'5M ... ... p..
~
.~
.;; ..c: -::\ 'j b!> Ol

~
"0

~
'5 2

T
II! 0 "0
c: '"'
j
.., U ..-< r::
~ ~
Ol <J) ..-<
....c:
u.,.j "0
~ t;l
Q)
c:
'" C'..." C...
Q)
'0
.....
,-I
..c: 0
0 ::l ..c:
ell
'0
f1l
... III
... 'rl .;t '"' Q)
0'<::
ill
<ll
p"
<J) 'Il '"
:oJ
M
a 0
H ~ !-t !-t 0 !-t
'" iJ... Cl. ;E !-t i><: :J r..... Q ::c a :> u z '"'
(,!)
dB
r/min r, .0 1/ p. I>, /', .p,
mmimmmm Imm .mm mID {rpm} rom o {rpm rmlmin mm Imin V A
kW kW kW
(A)

I
I

~~~~/
I
"-..~ ~~L ~~,---c..._ . . . . .-,-.-/'___ ,_/ .~~~~"",--",J ______
-- I ~~L../~~___
~
"'-'---
Notes (2) It shall with the indication in JIS R 6210 ..

(3) Tool tip height means the vertical distance between the tool tip
and the wheel center.

[The case where the tool tip is higher than the wheel center
shall be signed as (+), lower (-).1

(4) Depth of cut in this case, the feeding quantity of wheel shall
be recorded.

Remarks 1. Measuring condition of noise shall be written in the column of

Description.

2. Shape of the wheel shall be illustrated together with the main

dimension.

4. Rigidity test method

The rigidity test of the veneer knife grinders shall be carried out in
accordance with Table 4.

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B 6543-1991

Table 4. Rigidity test

Illustration for measur-

No. Test item Measuring method ing method

1 Bending Apply the fixed test indicator to

rigidity the wheel point (side surface) and
of wheel apply the load (p) perpendicular
spindle direction to the wheel spindle(5)
to measure the deflection of wheel
spindle.

This measurement is carried out

applying the load in two directions
making 90° to each other.

2 Combined Apply the test indicator fixed on

rigidity the tool fitting surface to the
of wheel wheel spindle and apply the load
spindle (p) in vertical direction between
and tool wheel spindle and tool fitting
fitting surface(5) to measure the relative
surface displacement between wheel spindle
and tool fitting surface.

This measurement, in the case where

the load direction crosses the
wheel spindle orthogonally, is made
at the middle of tool fitting
surface, and in the case where in
parallel, at the tip side of the
tool fitting surface.

Note (5) The position to which the load is applied should be the position
near the end of wheel spindle as far as possible and the distance
from the fixed end of the wheel spindle shall be recorded ••

Remarks 1. The rigidity test of the machine based on the same design, can
be represented by the test result from the typical one and be
omitted for the rest.

2. As to the load (P), the value the manufacturer recommends shall

be recorded.

3. This measurement shall be made after rotating the wheel spindle

to stabilize the temperature of the bearing.

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 6
B 6543-1991

5.. Static method

Static accuracy inspection method shall be carried out in acc.ordance

with Table 5 ..

Table 5. Static accuracy inspection

Unit: nun

Inspection Illustration for

No. item
Measuring method
measuring methods Tolerance

I Straight- Longi- [Place a precision O.. 04/m

ness of tudinalilevel on the sliding
sliding direc- Iisurface of bed(7),
surface tion(6) read the precision
of bed level at least for
every 1000 nun and
consider the maximum
difference to be the
measured value ..

Lateral Place a precision O.04/m

direc- level on the
tion(s) straightedge, riding
over both sliding
surfaces of bed,
consider the maximum
difference in read-
ings by the precision
level at least on
three positions of
the middle part and
both ends as the
measured value.

2 Straightness of Put a straightedge to 0.03 per

tool fitting the upper surface of 1000
surface the tool fitting
surface in parallel
and diagonally
respectively to the
sliding surface,
measure the clearance
with a feeler gauge
and consider the
maximum value to be
the measured value(S)

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 7
B 6543-1991
Table 5. (Continued)

Inspection Illustration for

No .. Measuring method Tolerance
item ,measuring methods

3 Straightness Put a straightedge to 0.03 per

of side the side surface of ! 1000
surface of tool fitting stand,
tool fitting measure the clearance
stand with a feeler gauge
and consider the
I maximum value to be
the measured
value(9).

4 Straight- In ver- Place a straightedge 0.03 per

ness of tical in parallel with 1000
recipro- plane I reciprocal movement
eating I of wheel fitting
move- In stand(lO) and apply 0.03 per
ment hori- the test indicator 1000
of wheel zontal fixed on the wheel
fitting plane fitting stand and
stand consider the maxi-
mum difference of
reading of the test
indicator within the
whole range of
travelling of wheel
fitting stand as the
measured value(6)"

5 Parallel- In ver- Put a test indicator 0.04 per

ism be- tical fixed on wheel stand 1000
tween plane to the side surface
recipro- of the tool fitting
cating stand, let the wheel
movement stand travel and con-
of wheel sider the maximum
fitting difference in read-
stand and ings by the test
tool indicator through-
fitting out the whole
surface travelling length
to be the measured
value.

In Put a test indicator 0.04 per

hori- fixed on the wheel 1000
zontal fitting stand to the
plane upper surface of the
tool fitting stand,
let the wheel stand
travel and consider
the maximum differ-
ence in readings by
the test indicator
throughout the whole
travelling length to
be the measured
value ..

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B 6543-1991

Table 5. (Continued)

Inspection Illustration for

No. item Measuring method Tolerance
measuring methods

6 Deflection of Put a fixed test 0 .. 02

wheel spindle indicator to the
outer surface of the
wheel fitting part,
rotate the wheel
spindle by hand and
consider the maximum
difference in readings
by the test indicator
during rotation to be
the measured value.

7 Axial movement I Put a fixed test indi- , 0.02

of wheel spindle cat or to the end I
surface of the wheel
spindle, shake the
wheel spindle in the
axial direction (11)
and consider the
maximum difference
in readings to be
the measured value.

8 Deflection of Put a fixed test 0.03 per

flange surface indicator to the dia. 100
of wheel spindle flange surface,
rotate the wheel
spindle with hand
and consider the
maximum difference
in readings by the
test indicator
during rotation to
be the measured
value.

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 9
B 6543-1991

Table 5. (Continued)

Inspection I Illustration for Tolerance

No. Measuring method measuring methods
item
I

9 Straight- In ver- Put a test indicator 0.02

ness of tical fixed on the bearing
wheel plane box of the wheel r--

feeding
movement In
spindle to the
straightedge( 12)
t
in depth hori- (e,g. placed on the
of cut zontal bed), give the feed- D= p
plane ing movement in depth .1

of cut to the wheel

and consider the
c+J ~
maximum difference in
readings by the test
--6
indicator throughout
the whole travelling
length to be the
measured value.
r

Notes (6) Longitudinal direction of bed means the direction of long

dimension and the direction at right angle to the same is called
the lateral direction.

(7) In the case where sliding surface of bed has a V-shaped groove,
the measurement shall be carried out by using a test bar and
putting a precision level on the test bar ..

(8) In the case where a straightedge is shorter than tool fitting

surface, the measurement shall be carried out throughout the
whole length of the tool fitting surface by moving the position
of the straightedge successively.

(9) In the case where a straightedge is shorter than the side

surface of tool fitting stand, the measurement shall be carried
out throughout the whole length of the side surface of tool
fitting stand by moving the position of straightedge
successively"

(10) Straightedge shall be adjusted so as to let the readings of test

indicator coincide with each other at both ends of the moved
distance on the tool fitting surface.

(11) The force to shake in the axial direction shall be approximately

150 N (approx. 15 kgf).

(12) Straightedge shall be adjusted so as to make the reading of test

indicator coincide with each other at both ends of the moved
distance (feeding movement for cutting) of wheel spindle.

Remarks: Those not equipped with the said function in accordance with the
type, may be omitted from the inspection on the corresponding
item in Table 5.

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 10.
B 6543-1991

6. Machining accuracy inspection method

The machining accuracy inspections shall comply with Table 6.

Table 6. Machining accuracy inspection

Unit: mm

Inspection Illustration for

No .. Measuring method Tolerance
item measuring methods

1 straightness Grind a tool of the 0.02 per

ground surface length suitable for 1000
the nominal dimension
of machine, put a
straightedge to the
ground surface
fitted as it stands
on the tool fitting
stand in parallel to
the tool tip, measure,
the clearance with !
feeler gauge and
consider the maximum
value to be the
measured value.

Reference Standards:
JIS B 6501-Test Code for Performance and Accuracy of Wood Working
Machinery
JIS R 6004-Glossary of Terms and Marks Used in Abrasive, Grinding
Wheel and Coated Abrasive
JIS R 61ll-Artificial Abrasives
JIS R 621l-Shapes and Dimensions of Grinding Wheels
JIS R 624l-Maximum Operating Speed of Grinding Wheels
JIS Z 8203-51 Units and the Use of Their Multiples and of Certain
Other Units

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 B 6543-1991
Edition 1

Japanese Text

Established by Minister of International Trade and Industry

Date of Establishment: 1963-07-01

Date of Revision: 1991-03-01

Date of Public Notice in Official Gazette: 1991-03-20

Investigated by: Japanese Industrial Standards Committee

Divisional Council on General Machinery

This English translation is published by:

Japanese Standards Association
1-24, Akasaka 4, Minato-ku,
Tokyo 107 Japan
© JSA, 1991

Printed in Tokyo by
Hohbunsha Co., ltd.

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