Serial No.

292973

Original Instructions

OPERATING MANUAL
MAZATROL SmoothX

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MAZATROL SmoothG

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INTELLIGENT

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THERMAL SHIELD

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Manual No.: H747SA0013E

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Serial No.:
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Before using this machine and equipment, fully understand the contents of this
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manual to ensure proper operation. Should any questions arise, please ask the
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nearest Technical Center or Technology Center.

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IMPORTANT NOTICE
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1. Be sure to observe the safety precautions described in this manual and the contents of the
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safety plates on the machine and equipment. Failure may cause serious personal injury or
material damage. Please replace any missing safety plates as soon as possible.
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2. No modifications are to be performed that will affect operation safety.

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3. For the purpose of explaining the operation of the machine and equipment, some illustrations
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may not include safety features such as covers, doors, etc. Before operation, make sure all
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such items are in place.

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4. This manual was considered complete and accurate at the time of publication, however, due to
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our desire to constantly improve the quality and specification of all our products, it is subject
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to change or modification. If you have any questions, please contact the nearest Technical
Center or Technology Center.
5. Always keep this manual near the machinery for immediate use.
6. If a new manual is required, please order from the nearest Technical Center or Technology
Center with the manual No. or the machine name, serial No. and manual name.

Issued by Manual Publication Section, YAMAZAKI MAZAK CORPORATION, Japan

08.2016

Copyright (C) 2016 YAMAZAKI MAZAK CORPORATION. All Rights Reserved.

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Serial No. 292973

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 Serial No. 292973

CONTENTS

1 INTRODUCTION ................................................................................. 1-1

2 DISPLAY FOR INTELLIGENT THERMAL SHIELD ............................. 2-1

2-1 Data Display ....................................................................................................... 2-1

2-2 Change of Scales ............................................................................................... 2-2

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2-3 Adjustment of Compensation Factor .................................................................. 2-3

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2-4 Examples of Use ................................................................................................ 2-4

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2-5 Precautions ........................................................................................................ 2-5

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 Serial No. 292973

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SAFETY PRECAUTIONS
This manual is prepared only for the function or the device which is specified in the title of this manual.
Therefore, you are required to carefully read and understand the operating manual of the machine,
especially the section describing safety precautions, before using or operating the function or the device.

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 Serial No. 292973

INTRODUCTION 1
1 INTRODUCTION
An object generally expands and contracts as the temperature rises and drops, respectively. For
example, a 1 m-long iron product expands about 10 m if its temperature rises by 1°C.
Since the temperatures of the structural members of the machine change in response to the
ambient temperature and to the heat generated by machine operation, an unexpected positional
error is produced between the workpiece and the tool tip.
The function Intelligent Thermal Shield is designed to compensate for such an error to enhance
machining accuracy.
 The change in machine temperature and the amounts of compensation for thermal displace-
ment are shown graphically on a dedicated display.

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 The optimum amount of compensation can be obtained by modifying the compensation factor

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according to the change in ambient temperature.

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1-1
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INTRODUCTION

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 Serial No. 292973

DISPLAY FOR INTELLIGENT THERMAL SHIELD 2

2 DISPLAY FOR INTELLIGENT THERMAL SHIELD

2-1 Data Display

1. Displayed data

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[4]

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[1]

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[9] [10]

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D747SA0001
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2. Display data description

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No. Item Unit Data description

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A graph showing the previous compensation value and the value after an
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adjustment of the compensation factor.

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Green: Reference compensation amount after adjustment

Compensation
[1] — Red: Compensation amount for thermal displacement
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amount graph
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Yellow: Composite compensation amount

Remark : Select the [Show Composite Comp.] option in the setup menu
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to graphically display the composite compensation amount.

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A graph of temperatures.
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Red: Room temperature (or room temperature 1)

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Green: Room temperature 2

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Orange: Coolant temperature

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[2] Temperature graph —

Remark : Use the [Show temp. in Fahrenheit] option in the setup menu
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to display the temperature in Celsius or Fahrenheit.

Note : It depends upon the specifications of the machine what kinds of
temperature are displayed.
[3] Slider — Used to set the time of the numerical data to be displayed in [4].

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 Serial No. 292973

2 DISPLAY FOR INTELLIGENT THERMAL SHIELD

No. Item Unit Data description

Compensation data at the time specified by the slider [3].
The difference in compensation amount is calculated from “Reference
compensation amount after adjustment” and “Compensation amount for
thermal displacement.”
[4] Compensation data — Remark : Select the [DIFF MODE] menu item to display the difference
between two values specified by the respective sliders.
Note : The displayed difference in compensation amount may have an
error in the fourth (ten thousandths) decimal place as compared with the
internal calculation.
Date of the graph to be displayed.
[5] Date Y/M/D
The date can be changed with the buttons and .
Starting time of the graph to be displayed.

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[6] Time H:M

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The starting time can be changed with the buttons and .

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Compensation axis of the graph to be displayed.
[7] Compensation axis —

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The axis can be changed with the buttons and .

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Compensation factor after adjustment of the compensation amount for

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thermal displacement.
Factor for adjusting

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[8] the compensation — The factor can be changed with the buttons and .
amount

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Standard setting: 1

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Setting range: –3.0 to 3.0 (Setting unit = 0.1)

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Number (TNo.) of the tool for which the composite compensation amount is

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[9] TNo. — to be displayed graphically.

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The tool number can be changed with the buttons

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Axis of the composite compensation amount to be displayed graphically.

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[10] Axis —
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The axis can be changed with the buttons and .

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2-2 Change of Scales

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1. Automatic vertical-axis scaling for the compensation amount graph

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Tap the [COMP. AUTO SCALE] menu item to highlight the menu item, and the scale of the
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vertical axis will automatically be changed so as to show the graph of compensation amount in
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its entirety in an optimum way for the specified date and the next day each time the “Date” is
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changed.
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2. Manual vertical-axis scaling for the compensation amount graph

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Follow the procedure below to manually change the scale of the vertical axis for compensation
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amount as desired.
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(1) Tap the [COMP. SCALE SELECT] menu item.

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(2) Enter the highest value of the scale.

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Setting range: 0.001 to 0.999 mm

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 The graph of compensation amount is redrawn according to the new scale.

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3. Manual horizontal-axis scaling for the compensation amount and the temperature graph
Each tap on the [TIME SCALE CHANGE] menu item changes the scale of the horizontal axis for
the time of day in rotation (among three sizes of 6, 12 and 24 hours).

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 Serial No. 292973

DISPLAY FOR INTELLIGENT THERMAL SHIELD 2

2-3 Adjustment of Compensation Factor
Check the information in the graph and follow the procedure below to adjust the compensation
factor.
(1) Change the date of the graph to be displayed.
(2) Change the starting time of the graph to be displayed.
(3) Change the compensation axis of the graph to be displayed.
(4) Change the compensation factor.
 The graph of the adjusted reference compensation amount changes according to the
change in compensation factor.
 The factor can be changed by moving the slider while checking the actual compensation

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Data for the

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Actual comp. amount

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Ref. comp. amount
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(5) Tap the [APPLY] menu item.

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 The adjusted compensation factor becomes effective.

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Note 1: Graphs for the last 3 months (maximum) can be displayed.

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Note 2: The selectable compensation axes depend upon the machine specifications.
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 Serial No. 292973

2 DISPLAY FOR INTELLIGENT THERMAL SHIELD

2-4 Examples of Use

1. To reduce (to 0) the difference about +0.02 mm in accuracy error (in Z-axis direction) from
morning to evening
(1) Select the date of machining and set the Z-axis as compensation axis.
(2) Experiment with a new compensation factor.
(3) Move the slider to the morning and evening positions to read the compensation amounts.
<If ‘3’ is set as the compensation factor>

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Read the compensation amount.
Move the slider.

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Morning (09 : 20) A Evening (16 : 10) Change in comp. amount

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Compensation amount for

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–0.0080 mm –0.0160 mm –0.0080 mm

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thermal displacement
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Reference compensation
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–0.0239 mm –0.0481 mm –0.0242 mm

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amount after adjustment

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 As shown in the above table, if ‘3’ is set as the compensation factor, the change in the
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amount of thermal displacement compensation from morning to evening is –0.0242 mm.

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 Machining accuracy can be improved for an error of about 0.02 mm since the amount of
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compensation is changed from –0.0080 mm to –0.0242 mm.

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(4) Tap the [APPLY] menu item to make the adjusted compensation factor effective.
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(5) From the next day onward, check to see if machining accuracy is improved.
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2. To improve the accuracy of some workpieces

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(1) Select the day on which the workpieces were machined.

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(2) Check the room temperature and coolant temperature graphs.

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 Check if these temperatures changed significantly in the period of time when the
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workpieces of low accuracy were machined.

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<Example of abrupt change in room temperature>

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DISPLAY FOR INTELLIGENT THERMAL SHIELD 2

(3) Find and remove the cause of the temperature change, and check if the accuracy is
improved.

2-5 Precautions
1. This function is not designed to guarantee accuracy.
2. An adjustment of the compensation factor involves a change in the amount of thermal
displacement compensation and, therefore, has a direct effect on misalignment and
machining dimensions. When a workpiece is machined for the first time after a change of
compensation factor, due allowance should be made for dimensional errors.
3. The compensation factor cannot be changed on a tool-by-tool basis.
4. The amount of compensation set with the thermal displacement compensation function is

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not incorporated in the POSITION and MACHINE values on the POSITION display, which

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means that a change of compensation factor does not cause any change on the POSITION

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display.

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5. When using this function, determine the change in the amount of thermal displacement

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compensation on a daily basis and adjust the compensation factor for the next day’s

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operation.

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DISPLAY FOR INTELLIGENT THERMAL SHIELD

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