KNECHT B 600 User manual

Automatic Grinding and Polishing Machine
Status 05.2020 Version 2.0 | Translation
Operating Instructions
B 600

3
Automatic Grinding and Polishing Machine B 600
Manufacturer
KNECHT Maschinenbau GmbH
Witschwender Straße 26
88368 Bergatreute
Germany
Phone +49-7527-928-0
Fax +49-7527-928-32
www.knecht.eu
Documents for the machine operator
Operating Instructions
Date of issue of the operating instructions
May 7, 2020
Copyright
The copyright for these operating instructions as well as other documents for the machine operator is held
by KNECHT Maschinenbau GmbH. These documents will be delivered only to our customers and to opera-
tors of our products and are a part of the machine.
These documents may neither be reproduced, nor made accessible to third parties, including rival firms.
Operating Instructions

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1. Important notes 7
1.1 Foreword 7
1.2 Warnings and symbols in the operating instructions 7
1.3 Warning labels on the grinding machine and their meanings 8
1.4 Rating plate and machine serial number 9
1.5 Figure and item numbers in the operating instructions 9
2. Safety 10
2.1 Basic safety instructions 10
2.1.1 Observe notes in the operating instructions 10
2.1.2 Operator's duty 10
2.1.3 Obligations on the part of the personnel 10
2.1.4 Hazards associated with the handling of the machine 10
2.1.5 Malfunctions 11
2.2 Proper use 11
2.3 Warranty and liability 11
2.4 Safety regulations 12
2.4.1 Organisational measures 12
2.4.2 Protective devices 12
2.4.3 Informal safety measures 12
2.4.4 Selection and qualifications of the personnel 12
2.4.5 Machine control system 13
2.4.6 Safety measures in normal operation 13
2.4.7 Dangers due to electrical power 13
2.4.8 Particular danger zones 13
2.4.9 Servicing (maintenance, repair) and fault rectification 14
2.4.10 Structural alterations to the grinding machine 14
2.4.11 Cleaning the grinding machine 14
2.4.12 Oils and greases 14
2.4.13 Relocation of the grinding machine 14
3. Description 16
3.1 Use as intended 16
3.2 Technical specifications 16
3.3 Functional description 17
3.4 Description of the assemblies 18
3.4.1 Switching the grinding machine on/ off 20
3.4.2 Control panel 21
3.4.3 Layout of the user interface (main screen) 22
3.4.4 Coolant Unit 24
3.4.5 Protective Hood 25
3.4.6 Knife Holder 25
3.4.7 Grinding Unit 26
3.4.8 Polishing units with polishing paste 27
3.4.9 Magazine Extension 27
Table of Contents

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4. Transport 28
4.1 Transport aids 28
4.2 Transport damage 28
4.3 Transport to another installation site 28
5. Installation 30
5.1 Selection of qualified personnel 30
5.2 Installation site 30
5.3 Supply connections 30
5.4 Settings 30
5.5 Initial commissioning of the grinding machine 31
6. Commissioning 32
7. Operation 35
7.1 General principles of grinding technology 35
7.2 Switching on the grinding machine 36
7.3 Grinding of cutter knives 36
7.3.1 Loading the grinding program 36
7.3.2 Grinding 38
7.4 Adjusting the deburring unit 41
7.5 Replacing the grinding belt 42
7.6 Changing the finned brushes of the polishing unit 43
7.7 Changing the finned brushes of the deburring unit 44
7.8 Changing the polishing pastes 45
8. Control system 46
8.1 Overview of control sub-programs 46
8.1.1 “F8 Settings” 46
8.1.2 “F10 Edit Product Data” 46
8.1.3 “F11 Select Knife Type” 46
8.2 Settings 47
8.3 Axes 49
8.4 Magazine Data 51
8.5 Machine Data 53
8.6 Holder Data 55
8.7 Manual Functions 57
8.7.1 General 57
8.7.2 Grinding Belt 58
Table of Contents

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8.7.3 Deburring unit (cutting edge) 58
8.7.4 Polishing unit (knife profile) 59
8.7.5 Knife Changer 59
8.7.6 Grinding Disk (optional) 60
8.8 Message Texts 61
8.9 Options 61
8.10 Setting up an internet connection 62
9. Care and maintenance 63
9.1 Coolant additive 63
9.1.1 Cooling lubricant maintenance plan 63
9.2 Lubrication and Maintenance 64
9.2.1 Lubrication schedule and lubricant table 65
9.3 Cleaning 66
9.4 Maintenance Plan 67
10. Disassembly and disposal 68
10.1 Disassembly 68
10.2 Disposal 68
11. Service, spare parts and accessories 69
11.1 Postal Address 69
11.2 Service 69
11.3 Spare parts 69
11.4 Accessories 70
11.4.1 Abrasives used 70
12. Appendix 71
12.1 EC Declaration of Conformity 71
Table of Contents

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1.1 Foreword
These operating instructions are meant to make it easier to get to know the automatic grinding
and polishing machine, referred to in this document as grinding machine, and to use it properly
for the intended purpose.
The operating instructions contain important information on how to operate the grinding ma-
chine safely, properly and cost-effectively. Observance of these instructions helps to avoid dangers,
repair costs and downtimes, and increases the reliability and service life of the grinding machine.
The operating instructions must always be accessible at the place of use of the grinding machine.
The operating instructions must be read and used by all persons entrusted with working on the
grinding machine, e.g. those entrusted with
• Transport, installation, commissioning
• Operation, including troubleshooting in the process flow, as well as
• Servicing (maintenance, repair).
In addition to the operating instructions and the binding accident prevention regulations applica-
ble in the country and place of use of the machine, the generally acknowledged rules of technol-
ogy with regard to safe and professional work practices are to be observed.
1.2 Warnings and symbols in the operating instructions
Heeding the following safety alert symbols/designations used in the operating instructions is
absolutely necessary:
The hazard triangle with the signal word “CAUTION” is used as a work
safety indication for all work which could result in death or physical injury.
Special care and caution must be taken when carrying out such jobs.
ATTENTION
The signal word “ATTENTION” is used to call attention to hazards which
could result in damage and/or destruction of the grinding machine or its
environment if special attention is not paid while carrying out particular
jobs.
NOTICE The signal word “NOTE” calls attention to tips on use and useful informa-
tion.
1. Important notes
CAUTION

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1.3 Warning labels on the grinding machine and their meanings
The following warnings and safety alert signs have been affixed to the grinding machine:
CAUTION! DANGEROUS ELECTRICAL VOLTAGE (warning
notice on the switch cabinet)
On being connected to the voltage supply (3x 400 V), the grinding
machine becomes electrically live and touching its live parts directly
could be life-threatening.
Live machine parts may be opened only by authorised, trained
personnel.
The grinding machine must be separated from the mains supply
before carrying out servicing, maintenance and repair jobs on it.
CAUTION! RISK OF INJURY FROM KNIFE (warning notice on
the polishing unit)
Work on the grinding machine involves the sharpening of knives
which could cause serious cut injuries due to their sharpness.
Protective gloves must be worn when carrying out such work, in
particular when placing the knife.
Be careful when transporting blades. Use the protective devices
provided by the knife manufacturer. Wear protective gloves and
apron.
Protective gloves should be worn when changing the coolant (see
Safety Data Sheet on “Coolant Lubricant”).
1. Important notes

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1.4 Rating plate and machine serial number
The rating plate is located on the left side of the
machine.
The machine number is located on the rating plate
and on the top left of the machine.
1.5 Figure and item numbers in the operating instructions
If a component of the machine that is shown in a figure is described in the text, it is followed by a
figure or item number in brackets.
Example: (3-13/1) denotes figure number 3-13, item 1.
The SP 114 (3-13/1) knife holder is fixed to the cross table
using a quick-clamping device (3-13/2).
Vacuum suction is used to draw and fix the knives to the
knife holder.
1. Important notes
Figure 3-13 SP 114 knife holder
Figure 1-2 Machine serial number
Figure 1-1 Rating plate
1
2

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2.1 Basic safety instructions
2.1.1 Observe notes in the operating instructions
The basic prerequisite for the safe handling and uninterrupted operation of this grinding machine
is knowledge of the basic safety instructions and regulations.
• These operating instructions contain important notes on how to operate the grinding machine
safely.
• All persons carrying out work on the grinding machine must follow these operating instructions,
in particular the safety notices.
• In addition, the accident prevention rules and regulations applicable at the place of use of the
machine must also be observed.
2.1.2 Operator's duty
The operator is obliged to allow only those persons to work on the grinding machine, who
• are familiar with the basic occupational safety and accident prevention regulations and have
been trained and instructed in the handling of the grinding machine,
• have read the operating instructions, particularly the “Safety” section, and have read and
understood the warning notes. They have given a signed confirmation of this in writing.
It is also checked at regular intervals as to whether the worker is fulfilling his employee obligation
to observe safety at work.
2.1.3 Obligations on the part of the personnel
All the personnel working on the grinding machine shall be obliged to
• observe the basic occupational safety and accident prevention regulations,
• read the operating instructions, particularly the “Safety” chapter, and the warning notes.
They shall give a signed confirmation of this in writing.
2.1.4 Hazards associated with the handling of the machine
The grinding machine has been built to the latest technological standards and the acknowledged
rules of technical safety. In spite of that, its use presents inherent risks which could result in bodily
harm or even death of the user or third parties, or impairment of the grinding machine or other
property.
The grinding machine may be used only:
• for the intended purpose, and
• in faultless condition with regard to safety-relevant aspects.
2. Safety

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2. Safety
Faults that could impair safety must be eliminated immediately.
2.1.5 Malfunctions
If safety-relevant malfunctions occur in the grinding machine, or if the processing behaviour
indicates that such malfunctions may have occurred, the grinding machine must be stopped
immediately and until such time as the malfunction has been found and eliminated.
Allow only authorised technical staff to eliminate the malfunctions.
2.2 Proper use
The grinding machine is only meant for the automatic grinding, deburring and polishing of flat
machine cutting knives.
Before starting work on a flat knife, it must be checked whether the knife fits on the grinding
plate and knife holder. Only then may the knife on the grinding plate be inserted in the knife
changer.
Any other use is considered improper use. KNECHT Maschinenbau GmbH does not assume any
liability for damages resulting from improper use. The user alone bears the risk in such cases.
Use as intended includes the observance of all the instructions in the operating instructions.
The grinding machine is being used improperly, if, e.g.,
• devices are not fastened properly.
• work pieces other than flat machine cutting knives are ground.
2.3 Warranty and liability
Warranty and liability claims in case of personal injuries or property damage are excluded if such
damage is attributable to one or more of the following causes:
• improper use of the grinding machine,
• improper transportation, commissioning, operation and maintenance of the grinding machine,
• operating the grinding machine with defective safety devices, or improperly attached or
malfunctioning safety and protective equipment,
• ignoring the operating instructions with regard to transportation, commissioning, operation,
maintenance and repair of the grinding machine.
• unauthorised structural alterations to the grinding machine,
• unauthorised modification, e.g. of the drive conditions (power and speed), and

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• insufficient monitoring of machine parts that are exposed to wear.
• use of unapproved replacement and wear parts
Use only original replacement and wear parts. If parts are purchased from external suppliers, it
cannot be guaranteed that they will be constructed and manufactured to withstand the stresses
and provide the level of safety required for operating the grinding machine.
2.4 Safety regulations
2.4.1 Organisational measures
All the existent safety devices must be checked regularly.
Observe prescribed intervals for recurring maintenance work or as specified in the operating
instructions.
2.4.2 Protective devices
Before commissioning the grinding machine, it must be ensured that all protective equipment is
properly mounted and in functional condition.
Protective equipment may be removed only after the machine has stopped and has been secured
against accidental restarting of the grinding machine.
When delivering spare parts, the protective equipment must be attached by the operator as stipu-
lated.
2.4.3 Informal safety measures
The operating instructions must be permanently available at the place of use of the grinding
machine. In addition to the operating instructions, the generally applicable as well as the locally
relevant accident prevention regulations must also be made available and observed.
All the safety alert symbols and danger warnings on the grinding machine must be complete and
clearly legible.
2.4.4 Selection and qualifications of the personnel
Only trained and instructed personnel may work on the grinding machine. The minimum legal
age for employment must be observed.
The responsibilities of the personnel must be clearly assigned, i.e. commissioning, operation,
maintenance and repair, etc.
Personnel still in the training or instruction phase may only be allowed to work on the grinding
machine under the permanent supervision of an experienced person.
2. Safety

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2.4.5 Machine control system
Do not make any changes to the software program under any circumstances. Parameters that the
operator can set himself are excluded from this prohibition (e.g. setting the number of cycles).
Only trained and instructed personnel is allowed to activate the control unit.
2.4.6 Safety measures in normal operation
Refrain from any method of working which may pose a risk to safety. Only operate the grinding
machine if all the safety devices are installed and fully functional.
Check the grinding machine for external signs of damage and correct operation of the safety
devices at least once every shift.
Report any changes (including operating behaviour) immediately to the competent depart-
ment/person. Where required, shut down the grinding machine immediately and secure against
restarting.
Before switching on the grinding machine, ensure that no one is exposed to any risk from the
start-up of the machine.
If there are any functional faults, immediately stop the machine and secure against restarting.
Have the faults eliminated immediately.
2.4.7 Dangers due to electrical power
The switch cabinet must always remain secured against access. Only authorised personnel must
be allowed to access it.
Work on electrical units or operating materials may only be performed by a qualified electrician in
accordance with electrical rules.
Defects, such damaged cables, cable connections, etc., must be immediately rectified by an
authorised electrician.
Cables marked in yellow are electrically live even when the main switch
is in off position.
CAUTION
2.4.8 Particular danger zones
When the grinding belt moves to working position, there is a hazard of pinching in the rear area
of the machine. Suitable personal protective equipment must be worn.
2. Safety

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2.4.9 Servicing (maintenance, repair) and fault rectification
Maintenance work is to be carried out on schedule by trained personnel. Inform operating
personnel before starting repair work. The responsible supervisor is to be named.
For all service work, the grinding machine is to be disconnected from the power supply and
secured against accidental restarting. Pull out the mains plug. Cordon off the servicing area, as
far as possible.
After completion of the maintenance work and fault rectification, install all the safety devices and
check whether they are fully functional.
2.4.10 Structural alterations to the grinding machine
Modifications, retrofitting or rebuilds of the grinding machine are not allowed without the per-
mission of the manufacturer. This also applies to the installation and adjustment of safety devices.
No alterations may be carried out without prior written permission from KNECHT Maschinenbau
GmbH.
Immediately replace machine parts which are not in perfect condition.
Use only original replacement and wear parts. If parts are purchased from external suppliers, it
cannot be guaranteed that they will be constructed and manufactured to withstand the stresses
and provide the level of safety required for operating the grinding machine.
2.4.11 Cleaning the grinding machine
Cleaning agents and materials used must be handled properly and disposed of in an environmen-
tally friendly way.
Ensure that wear and replacement parts are disposed of in a safe and environmentally friendly way.
2.4.12 Oils and greases
When handling oils and greases, follow the safety instructions for the product. Observe special
instructions for the foodstuffs sector.
2.4.13 Relocation of the grinding machine
Even when moving the machine a short distance from its site, disconnect it from all external
power supply sources. Before restarting the machine, connect it properly to the current supply.
When loading or unloading, only use hoisting and load lifting equipment with sufficient
load-bearing capacity. Appoint a qualified banksman (signaller) for the lifting process.
No persons other than those entrusted with this work may be present in the loading and
installation area.
2. Safety

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2. Safety
Only lift the grinding machine correctly with hoisting gear in accordance with the operating
instructions (attachment points for hoisting equipment, etc.). Only use suitable transport vehicles
with sufficient load-bearing capacity. Attach the load securely. Use suitable attachment points.
When putting in operation again, proceed only as instructed in the operating instructions.

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3. Description
3.1 Use as intended
The B 600 automatic grinding and polishing machine grinds, deburrs and polishes flat machine
cutting knives.
3.2 Technical specifications
Height ������������������������������������������������������������ approx. 1790 mm
Width (incl. belt filter coolant unit) ������������������������������������ approx. 2754 mm
Depth (incl. magazine extension) �������������������������������������� approx. 2184 mm
Weight ���������������������������������������������������������������������� 700 kg
Current supply* ������������������������������������������������������������ 3x 400 V
Mains frequency* �������������������������������������������������������������� 50 Hz
Output* ������������������������������������������������������������������� 11.0 kW
Energy consumption* ��������������������������������������������������������� 10.5 A
Back-up fuse* ������������������������������������������������������������������ 25 A
Control voltage �������������������������������������������������������������� 24 V DC
Pneumatic connection ��������������������������������������������������������� 6.5 bar
Measured A-evaluated emission sound pressure level ����������������������������� 74 dB (A)
at workstation LpA**
Air consumption �������������������������������������������������������� max. 50 l/min
Operating noise at the grinding wheel (optional) ��������������������������������� 72 dB (A)
Wet grinding belt ������������������������������������������������������ 2200 x 60 mm
Flap brushes ����������������������������������������������������������� d.180x30 mm
*) This data may vary depending on the electrical power supply
**) Noise emission information according to EN ISO 11202 (measurement uncertainty KpA. 2.5 dB(A))
A K 24 cutter knife R363 by KNECHT Maschinenbau GmbH was ground
.

approx. 2754 mm
approx. 2184 mm
approx. 1564 mm
approx. 1790 mm
approx. 2230 mm
approx. 2754 mm
approx. 2184 mm
approx. 1564 mm
approx. 1790 mm
approx. 2230 mm
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Figure 3-1 Dimensions in mm
3. Description
3.3 Functional description
The grinding and polishing machine can be used to automatically sharpen, deburr and polish
linear and convex flat cutter knives in knife size of maximum 600 x 400 mm.
The knife magazine can hold up to eight knives can be optionally extended to hold up to 16
knives. The knives are fed automatically and guided along the wet grinding wheel or the finned
brushes precisely according to their shape.
The grinding angles of the wet grinding belt can be infinitely adjusted between 10° and 35°.
In case of emergency, the grinding and polishing machine can immediately be stopped by
pressing the “Emergency Stop” button
Goc
Goc

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3. Description
3.4 Description of the assemblies
1 Belt protecting hood
2 Belt unloading lever (concealed)
3 Hand wheel for height adjustment of “Deburring Unit”
4 Rear doors of polishing units (concealed)
5 Protective hood of the grinding compartment
6 Belt filter coolant unit
7 Hand wheel for height adjustment of “Polishing Unit”
8 Flow gauge
9 Suction unit
10 Control panel
11 Switch cabinet (concealed)
12 Hinged doors of the knife magazine (only needed for extending the magazine)
13 Adjustable machine feet
Figure 3-2 General view of the grinding machine
3
2
6
5
4
1
10
13
12
11
9
7
8

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3. Description
1 Splash guard
2 Deburring unit on the left for knife blade
3 Knife
4 SP 114 knife holding fixture (optionally, SP 115 3-way knife holder)
5 Guard plate
6 Grinding unit
7 Work lamp
8 Air blow nozzle
9 Polishing unit for knife profile
10 Cross table
Figure 3-3 Interior view
2
1
3
4
5
9
10
7
8
6

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3. Description
1 Blow off device
2 Super fine filter
3 Pneumatic line switch cabinet
3.4.1 Switching the grinding machine on / off
The main switch (3-5/1) is disposed on the switch
cabinet in the rear of the machine.
Turning the main switch from “0” to “I” switches
on the grinding machine.
Turning the main switch from “I” to “0” switches
off the grinding machine.
Figure 3-4 Interior view of knife changer
Figure 3-5 Main switch
1
12
3 3

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3.4.2 Control panel
1 Display screen
2 “Emergency Stop” button
3 “Control On” button: Activates the controls (button starts flashing)
4 “Start” button: Starts the grinding program
5 “Stop” button: Stops the grinding program
6 “Abort Program”: Aborts a running program
7 “Stop at cycle end”
8 “Vacuum On” button: Switches on the vacuum pump
9 “Setting mode” key switch: Position “1” for setting mode
3. Description
1
2
3 4 5 6 7 8 9
Figure 3-6 Control panel
This manual suits for next models
1
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