LEHMANN AM-LOCK Operating Instructions Manual

Clamping system

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Operating instructions

for the machine operator

Commissioning, operation and maintenance of your pL

AM-LOCK system

The palletizing and zero-point clamping system in the metal

powder bed for additively printed parts and the finishing thereof

Manufacturer:

Peter Lehmann AG

Bäraustrasse 43

CH-3552 Bärau

www.lehmann-rotary-tables.com

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Summary of Contents for LEHMANN AM-LOCK

Page 1 Operating instructions for the machine operator Commissioning, operation and maintenance of your pL AM-LOCK system The palletizing and zero-point clamping system in the metal powder bed for additively printed parts and the finishing thereof Manufacturer: Peter Lehmann AG Bäraustrasse 43 CH-3552 Bärau...
Page 2: Table Of Contents
16 Replacing the substrate plate ..........................26 17 Storage of unused pallets ........................... 27 18 Replacing the AM-LOCK pins in the grid plate ....................28 19 Stress relieving the complete pallet to 650°C ....................28 20 Customer-specific special features ........................29 20.1...
Page 3: General Information
General Information Dear Customer, We wish you every success with your pL LEHMANN AM-LOCK clamping system. The pL LEHMANN AM-LOCK clamping system is a quality product from Switzerland. The clamping system is the ideal solution for the efficient production on machines for additive manufacturing, from the metal powder bed to the complete finishing on ONE system with ONE zero point - precise, compact, simple and for temperatures up to 500°.
Page 4: Safekeeping Of The Manual At The Place Of Installation
Safekeeping of the manual at the place of installation Keep this operating manual in a safe location at the machine. It must be readily available to the operators of the pL LEHMANN AM-LOCK at all times. NOTICE Follow the instructions in the OPERATING INSTRUCTIONS for the "MACHINE".
Page 5: Assembly Of The Grid Plate On The Am Machine
ATTENTION: Depending on the machine, point b may not be applicable or may be handled differently. For Trumpf TruPrint see chapter 2.1. c) Align the bore pattern of the AM-LOCK grid plate with the opposite side (construction platform) o 2x Ø10 F7 for locating pins o 4x M5 (use min.
Page 6: Preparing The Am-Lock Pallets
 Replacement substrate plates can be ordered from pL LEHMANN or made by yourself (request production drawing from pL LEHMANN) b) The surfaces of the substrate plates must be flat and cleanly milled. To improve material bonding during the printing process, brushing or shot peening is also possible.
Page 7 a) Clean the grid plate cleanly and without leaving any residue b) Make sure that there is a pin in the grid plate at least at those bores marked with small centers in the pallet (see picture). Two dots = Reference bore One dot = Angular positioning bore The segmentation is described in the next chapter.
Page 8: Segmentation Of Am-Lock Pallets And Their Alignment
Segmentation of AM-LOCK pallets and their alignment 8 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 9: Removing The Am-Lock Pallets
Removing the AM-LOCK pallets WARNING High exposure to fine dust. Warning of serious injury from fine dust!  Wear the appropriate, specified protective equipment.  Secure the workplace before you leave it. WARNING High temperatures. Warning of severe burns! ...
Page 10: Operation Of The Am-Lock Chuck
Operation of the AM-LOCK chuck This chapter describes the requirements if the chuck is operated pneumatically in any way. The respective connections are also shown. Requirements for pneumatic operation Pneumatic pressure for pallet clamping: 6bar Pneumatic pressure for seal air/cleaning: 0.3 - 0.5bar...
Page 11 11 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 12: Delivery Condition Am-Lock Chuck
3. All chip protection caps are mounted as delivered. They can be removed with an M4 screw. 4. The grub screws for any pneumatic actuation are located on the side of the housing. They must be unscrewed and inserted according to the application. See also chapter "Operation of the AM-LOCK chuck".
Page 13: Assembly Of The Am-Lock Chuck
Assembly of the AM-LOCK chuck Here it is mentioned how the chuck is mounted on the machine. 1. Pull out the centering sleeves with M12 screw 2. Place the chuck on the machine table so that the centering sleeves fit into a groove. Press the chuck against the groove in the direction of the arrow (see picture).
Page 14: Connection Diagram Am-Lock Chuck With Self-Locking Mechanism
Connection diagram AM-LOCK chuck with self-locking mechanism The diagram below applies to "Continuous pneumatic actuation variant 2" and to "Pulsed actuation". 0.3 – 0.5 bar min. 5 bar Connection C: Clean 6 bar Connection 1: Clamp Connection 0: Unclamp Connection diagram AM-LOCK chuck with self-locking mechanism This diagram applies to "Continuous pneumatic actuation variant 1".
Page 15: Check Regularly - Respond As Required
Check regularly – respond as required Faultless and stable air pressure is essential to safe operation and long system life. We recommend the following additional equipment, if necessary: Water separator 99% Art. no. pL: 125‐0991 EAMG350‐F03D from SMC. 15 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 16: Operation Of The Am-Lock Chuck
Operation of the AM-LOCK chuck This chapter explains the difference of manual, pulsed and continuous pneumatic clamping. 13.1 Manual actuation This is a purely mechanical actuation. Where necessary, the seal air can be connected to connection "C". 13.1.1 Basic principles 1.
Page 17: Continuous Pneumatic Actuation Variant 1
1. The M5 grub screws can be screwed into the hole provided on the right side of the chuck and stowed away. 2. Ensure that the pressures required in chapter " Operation of the AM-LOCK chuck" are reached 3. Make sure that the chuck is connected as shown in chapter "Connection diagram AM-LOCK chuck with self-locking mechanism"...
Page 18 13.2.2 Clamping 1. Make sure that the special screws on the rear chuck side are screwed in ATTENTION By screwing in the special M5 cylinder screws, the chuck does not remain clamped when the pressure drops. Means the self-locking mechanism is deactivated Take safety precautions to prevent a pressure drop ...
Page 19: Continuous Pneumatic Actuation Variant 2
1. The M5 cylinder screws can be screwed into the hole provided on the right side of the chuck and stowed away. 2. Ensure that the pressures required in chapter " Operation of the AM-LOCK chuck" are reached 3. Make sure that the chuck is connected as shown in chapter "Connection diagram AM-LOCK chuck with self-locking mechanism”...
Page 20 2. Place pallet 3. Apply permanent pressure to connection "1" 13.3.3 Release 1. Remove pressure at connection "1" 2. Apply pressure to connection "0" on the rear side of the chuck for one second 3. Remove pallet, lift off 20 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 21: Pulsed Actuation
1. The M5 cylinder screws can be screwed into the hole provided on the right side of the chuck and stowed away. 2. Ensure that the pressures required in chapter " Operation of the AM-LOCK chuck" are reached 3. Make sure that the chuck is connected as shown in chapter "Connection diagram AM-LOCK chuck with self-locking mechanism”...
Page 22 3. Apply pressure to connection "1" for two seconds 13.4.3 Release 1. Remove pressure at connection "1" 2. Apply pressure to connection "0" on the rear side of the chuck for one second 3. Remove pallet, lift off 22 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 23: Operation After Interruptions In Use
13.5 Operation after interruptions in use If the chuck is not actuated for a prolonged period of time, the self-retaining function may have to be reactivated. Possible elimination: 1. Remove all pallets from the chuck 2. Connection 0: Pressurize 5x 3.
Page 24: Emergency Release Of The Pallets
Emergency release of the pallets If the chuck is jammed or blocked for any reason, it can be released again via the emergency release. 1. Ensure that the chuck is manually released. 2. Remove both M6 grub screws so that the punch can be positioned here later on 3.
Page 25 4. Carefully insert a punch into the central bores of the unscrewed M6 grub screws (CAUTION: do not damage the thread) and loosen the blocking with a gentle hammer blow 5. The chuck should work loose and function again ONLY FOR PNEUMATIC ACTUATION: Make sure that the M5 grub screws are screwed in again on the rear chuck side 7.
Page 26: Machining The Workpieces On The Cnc Machine
Machining the workpieces on the CNC machine 1. Clamp the pallet onto the AM-LOCK chuck 2. Apply the zero point 3. Load the CNC program for finishing 4. Execute finishing 5. Measure the workpiece (in OR outside the CNC machine), without separating the workpiece 6.
Page 27: Storage Of Unused Pallets
Improper storage can lead to corrosion and damage the machine when reused!  Store the pallets that are not needed cleanly cleaned and protected against corrosion.  Corrosion can render the AM-LOCK clamping system inoperable! 27 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...
Page 28: Replacing The Am-Lock Pins In The Grid Plate
5. Tighten the pin using the screw supplied to 2 Nm Note: When removing the AM-LOCK clamping pins, cover pins should be mounted to protect the grid plate and for easier cleaning. Part number for order: AML.Pin3 CAUTION Danger due to broken screws.
Page 29: Customer-Specific Special Features
Customer-specific special features The AML clamping system has been partially optimized for the machine used by the customer. This chapter describes various special features. 20.1 50x50 mm pallet 1. In order to create more imprint area for 50x50mm pallets, the outer radii have been reduced. Therefore, they must never be used at the corners of a grid plate! 2.
Page 30: Trumpf Pallet (Aml.gp-Tru100)
20.2 Trumpf pallet (AML.GP-TRU100) 1. Trumpf machines with round construction shaft ø100 have a protruding positioning pin. a. The pallet can be simply put on. b. For easy handling, a pin has also been integrated into the UNO chuck (AML.SPF-U). The pin is pressed in and can be removed if necessary.
Page 31: Contact
Peter Lehmann AG Bäraustrasse 43 CH-3552 Bärau +41 (0)34 409 66 66 +41 (0)34 409 66 00 sales@plehmann.com service@plehmann.com www.lehmann-rotary-tables.com Thank you for using pL LEHMANN products! 31 / 31 Operating_man_AM-LOCK_DOK-0373a-EN(06).docx 2023-10-04 - Translated document in accordance with MRL 2006/42/EC...