Nós fornecemos um novo motor fabricado na China para venda.
Procedimento de diagnóstico de falha de movimento do sistema de posicionamento XY do motor escovado
O procedimento a seguir destina-se a ser usado como uma ferramenta de diagnóstico para determinar causas gerais para falhas do motor do sistema de posicionamento XY e falhas de movimento. Usando um bom motor conhecido, será feita uma tentativa de isolar o problema entre o motor ou os outros problemas do sistema. Use este procedimento somente na geração 8, máquinas de cabeçote simples equipadas com motores com escovas (número de peça de referência 42418104).
Observação:
Se você precisar substituir um motor, devolva-o à Binghamton na caixa em que a substituição foi entregue.
EQUIPAMENTO NECESSÁRIO:
Bom motor, graxa Blue Kendall (40833810) para parafuso de avanço, óleo de 10 W (40833827) para buchas de esferas e eixos, chave de fenda Phillips, chaves Allen
HABILIDADES F/E NECESSÁRIAS:
Diagnósticos IM
Configuração zero inicial XY
Instalação de motores do sistema de posicionamento XY
TEMPO ESTIMADO PARA REALIZAR O PROCEDIMENTO:
30 minutes if no problems found
3 hours if motor is found to be defective
5 + hours if other system problems are found INFORMATION (please fill out)
STEP 1 (Perform on X axis first, then repeat on Y axis)
In this step, you will be running a single axis at reduced speed & acceleration while observing the Max DAC output, which is proportional to the torque. If the torque is too high, this may indicate motor or positioning system problems.
LAUNCH IM DIAGNOSTICS
Run “Quick Start” Select #1 “Set-up BEC”
When macro is done zeroing (quit don’t save) to exit “set-up BEC” screen
Select: DIAGNOSTICS, MANUAL DIAGNOSTICS
On the LEFT side, click the pull down menu of the “SECTION” box. Select “UIMC 1 AXIS INPUTS”
Click the BLUE “MOVE” button & edit the following parameters: Speed from 116 to 10
Acceleration from 2400 to 500
Click the Auto Cycle & Continuous Run check boxes Cycle the axis from 0” to 18” or 0 count to 144,000 count
Observe the “Maximum DAC Output During Move” number for approximately 5 minutes and fill out the STEP 1 CHART below.
If the number ever gets above 340 maximum, the system has too much friction. It could be the motor or other system problems.
If the “Maximum DAC output during move” is less than 340. Stop. No further steps are required for this Axis.
This Axis appears to be functioning correctly.
STEP 1 CHART
Proceed to STEP 2
STEP 2
In this step you will perform specific PM activities that have a large impact on the amount of torque required to
operate the positioning system.
Grease the lead screw, oil the shafts & re-tension the belt.
Cycle at normal speed and acceleration for ½ hour, check the appropriate box below.
Speed…………116 Acceleration….2400
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Was the lead screw dry? |
YES Ā |
NO Ā |
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Was the Shaft dry? |
YES Ā |
NO Ā |
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Was the belt loose? |
YES Ā |
NO Ā |
Cycle at the reduced Speed & Acceleration per STEP 1 and fill out the STEP 2 CHART below. If it gets considerably better (Max DAC below 340) you’re done. If not, go on to STEP 3.
STEP 2 CHART
STEP 3
In this step you are removing the motor in preparation for Step 4 and making further investigation into possible sources of high positioning system friction.
Remove the motor and move axis by hand.
Feel and listen for binds, hesitations or noises in the lead screw and/or ball bearing/shafts.
What was found?
Verifique a folga/folga axial no parafuso principal segurando-o com a mão e empurrando em ambas as direções. Não deve haver folga axial perceptível no parafuso de avanço.
Saída DAC máxima durante o movimento
Saída DAC máxima durante o movimento
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Teve algum jogo? |
SIM Â |
NÃO Ā |
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Substitua todas as peças que você acha que tem problema. |
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O que foi substituído? |
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Nº da peça Descrição |
Sintoma |
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Procedimento de Manutenção do Motor
Propósito:
O objetivo deste documento é descrever como fazer a manutenção dos motores da série “Gold”, tipo PMI U12M4 e U12M4H (número de peça UIC 11467000, 13570000, 40051001 e 40051002, vendidos antes de novembro de 1995) Este procedimento deve ser executado a cada seis meses , ou com mais frequência, se for necessário.
Ferramentas necessárias:
Chaves Allen
Chave de fenda (5 a 6 mm de largura)
Screw driver, small blade (2,5 to 3 mm wide)
Adjustable wrench
Prerequisite:
Push in the machine’s Emergency Stop button
Turn off the machine’s power
Procedure:
1. Note which wires are attached to which motor terminal. Using an adjustable wrench, remove the wires from the motor’s terminals.
2. Remove the motor from the machine
3. Remove the brushes from the motor
4. The minimum usable length of the carbon part of the brushes is .240 inches ( 6,1 mm) long. If the brushes wear shorter than .240 inches, the motor’s commutator wires can be damaged by electrical arcing.
So that the brushes will not wear to less than .240 inches, we recommend that they be replaced when they become .300 inches long ( 7,62mm). Universal’s part number for a set of four (4) brushes for these motors is B26100021.
5. Check that the motor’s shaft turns smoothly. If not, then the bearings are damaged, and the motor should be discarded.
6. Using clean, dry, compressed air, blow the carbon dust out of the motor.
7. Look through the brush holes and examine the condition of the commutator wires, while turning the motor shaft. If there are any burned or damaged wires, the motor must be discarded.
8. To install the brushes into the motor, place the carbon block in the brush hole.
9. Using a small screwdriver, gently push the spring down into the brush hole. It will be necessary to reposition the blade of the screw driver several times into the coils of the spring, to make the spring go into the hole.
10. It may be necessary to push the metal tab on the side of the brush contact to make it go into the brush hole.
11. After the metal tabs have gone into the hole, use the screw driver to hold the brush contact down in the brush hole.
12. Puxe a pequena lâmina da chave de fenda enquanto move o parafuso no lugar. Certifique-se de que as abas do contato da escova não saiam completamente do orifício da escova ao fazer isso. Comece o parafuso no orifício roscado girando-o no sentido horário com os dedos. Se não girar facilmente, remova-o e repita a etapa 11. Em seguida, aperte o parafuso com cuidado usando a chave de fenda grande.
13. Instale todas as (4) escovas no motor. Monte novamente o motor na máquina. Reconecte os fios nos terminais apropriados do motor.
