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YCM Mill Mastery |EAGLE MACHINE INC. > YCM JT18 > Flashcards

YCM JT18 Flashcards

1
Q

What are the X, Y, and Z axis travels of the JT18?

A

The X-axis is 70.87”, Y-axis is 33.86”, and Z-axis is 29.53”, making it suitable for machining large parts with high precision.

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2
Q

What unique design feature ensures the table is fully supported in the JT18?

A

The T-base, overhang-free design keeps the table fully supported regardless of axis position, ensuring accuracy and flatness across large parts.

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3
Q

What is the maximum table load capacity of the JT18?

A

The table can handle up to 4,409 lbs, making it ideal for heavy-duty machining applications.

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4
Q

What material is the bed of the JT18 constructed from?

A

The bed is made from Meehanite cast iron, offering excellent rigidity and vibration damping for demanding machining operations.

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5
Q

What type of guideways are used in the JT18’s axes?

A

The JT18 uses rigid square box ways with Turcite B, ensuring high rigidity, reduced vibration, and long-lasting wear resistance.

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6
Q

How do pre-tensioned ballscrews improve machine performance?

A

Pre-tensioned ballscrews minimize thermal growth and enhance rigidity, stability, and precision during machining operations.

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7
Q

What is the positioning accuracy of the JT18 on all axes?

A

The positioning accuracy is 0.00055” (X/Y/Z), ensuring precise movements for machining applications.

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8
Q

What is the repeatability of the JT18 on all axes?

A

The repeatability is ±0.00039” (X/Y/Z), providing consistent accuracy in repeated operations.

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9
Q

What are the rapid traverse rates for the JT18’s axes?

A

The rapid traverse rates are 591 ipm for the X and Y axes, and 472 ipm for the Z axis, reducing non-cutting time.

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10
Q

What are the cutting feed rates for the JT18?

A

The cutting feed rates are 196.9 ipm for all axes, ensuring smooth and efficient machining.

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11
Q

What is the ballscrew pitch for the JT18?

A

The ballscrew pitch is 0.393”, allowing for precise and smooth axis movement.

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12
Q

What spindle interface is used in the JT18?

A

The JT18 uses a Big Plus CAT50 spindle interface, which offers enhanced rigidity and precision.

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13
Q

What is the spindle speed range of the JT18?

A

The spindle speed ranges from 100 to 6,000 RPM, suitable for both roughing and finishing operations.

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14
Q

What is the maximum horsepower of the JT18’s spindle motor?

A

The spindle motor provides a maximum of 33 HP (21 kW) for 30 minutes, with a continuous rating of 20 HP (15 kW).

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15
Q

What is the torque rating of the JT18 spindle motor?

A

The spindle delivers 347.48 ft-lbs at 30 minutes and 281.73 ft-lbs at continuous rating, allowing machining of tough materials.

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16
Q

What spindle cooling technology does the JT18 utilize?

A

The JT18 uses a chiller unit for spindle jacket cooling, maintaining thermal stability during extended operations.

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17
Q

What are the table dimensions of the JT18?

A

The table measures 78.74” x 33.86”, providing ample space for large workpieces.

18
Q

What is the height of the table from the floor?

A

The table height from the floor is 38.58”, ensuring ergonomic access for operators.

19
Q

What is the maximum workpiece size the JT18 can accommodate?

A

The JT18 supports workpieces up to 78.74” in length, 33.86” in width, and 29.53” in height.

20
Q

What is the configuration of the table’s T-slots?

A

The table features 5 T-slots, each 0.866” wide and spaced 5.905” apart, accommodating various work-holding setups.

21
Q

What is the standard tool capacity of the JT18’s ATC?

A

The ATC holds 40 tools, ensuring flexibility for complex machining operations.

22
Q

What is the maximum tool diameter with adjacent pockets empty?

A

The maximum tool diameter is 9.44” when adjacent pockets are empty.

23
Q

What is the maximum tool length and weight the ATC can handle?

A

The ATC accommodates tools up to 13.77” in length and 44 lbs in weight.

24
Q

What is the tool-to-tool change time for the JT18’s ATC?

A

The tool-to-tool change time is 5 seconds, improving operational efficiency.

25
Q

What tool selection method does the ATC use?

A

The ATC uses a bi-directional, random access system for efficient tool changes.

26
Q

What control system is equipped on the JT18?

A

The JT18 uses the FANUC 200FB+ control with a 10.4” LCD screen, providing advanced programming features and reliable operation.

27
Q

What is the block processing time and look-ahead capability of the FANUC control system?

A

The control features a 1.0 ms block processing time and 400-block look-ahead, ensuring smooth and precise machining.

28
Q

What industries are well-suited for the JT18 with FANUC control?

A

The FANUC control makes the JT18 ideal for aerospace, automotive, medical, and die/mold applications.

29
Q

What technology enhances tapping speeds in the JT18?

A

The Fast Cycle-Time (FCT) technology optimizes tapping speeds, reducing cycle times.

30
Q

What connectivity options are included in the FANUC control system?

A

The FANUC control includes Ethernet, USB, and RS-232C connections for seamless data transfer.

31
Q

What chip evacuation system is used in the JT18?

A

The JT18 features a dual-auger chip evacuation system and a rear-discharge conveyor for efficient chip removal.

32
Q

What type of conveyor system does the JT18 utilize?

A

The hinge-type conveyor handles various chip types, including nests, stringy chips, and medium-to-large broken chips.

33
Q

What is the coolant tank capacity of the JT18?

A

The coolant tank holds 171.7 gallons, supporting long machining cycles without frequent refilling.

34
Q

What materials are commonly handled by the JT18’s conveyor system?

A

The conveyor system is optimized for aluminum, brass, and steel, with optional upgrades for fine chip handling.

35
Q

What features improve the coolant management system’s efficiency?

A

Adjustable coolant nozzles, a coolant wash-down gun, and an air blast system ensure efficient chip and coolant evacuation.

36
Q

What are the electrical requirements for the JT18?

A

The machine requires 220 volts, 3-phase, 60 Hz power, and a 171-amp breaker.

37
Q

What is the minimum air pressure required for the JT18?

A

The machine requires an air pressure of at least 80 psi.

38
Q

What is the KVA rating for the JT18?

A

The JT18 has a KVA rating of 65, subject to change with additional options.

39
Q

What are the recommended environmental conditions for optimal accuracy?

A

Maintain an ambient temperature of 68°F ±3° in a temperature-controlled environment with an approved foundation.

40
Q

What is the weight and floor space requirement for the JT18?

A

The machine weighs 45,194 lbs and requires a floor space of 180.71” x 173.23” x 132.68”.

YCM Mill Mastery |EAGLE MACHINE INC. (17 decks)

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