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YCM Bridge Mill Mastery | EAGLE MACHINE INC. > YCM JD422 10K > Flashcards

YCM JD422 10K Flashcards

1
Q

What are the axis travels of the JD422?

A

X-axis: 165.35”, Y-axis: 86.61”, Z-axis: 30”.

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2
Q

What is the table load capacity of the JD422?

A

The table supports up to 33,069 lbs.

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3
Q

What material is used in the JD422’s bed construction?

A

Meehanite cast iron for stiffness and vibration damping.

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4
Q

What type of guideways are used in the JD422?

A

55mm roller guideways in X and Y axes; box ways in the Z-axis.

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5
Q

What is the ballscrew pitch and diameter in the JD422?

A

X: 0.79” pitch, 2.76” diameter; Y: 0.63” pitch, 2.17” diameter; Z: 0.39” pitch, 1.77” diameter.

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6
Q

What is the Step Bridge Design, and how does it benefit the JD422?

A

It distributes saddle weight and machining forces evenly, improving accuracy and tool life.

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7
Q

What is the linear positioning accuracy of the JD422?

A

X: ±0.00059”, Y: ±0.00039”, Z: ±0.00027”.

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8
Q

What is the repeatability of the JD422?

A

X: ±0.00039”, Y: ±0.00027”, Z: ±0.00019”.

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9
Q

How does the JD422 achieve thermal stability?

A

It uses fixed, pre-tensioned double-nut ballscrews, spindle chiller, and air-oil lubrication.

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10
Q

What ensures machining accuracy in the JD422?

A

Linear scales with 0.010-micron resolution and box ways in the Z-axis for vibration damping.

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11
Q

What spindle interface does the JD422 use?

A

Dual Contact BBT50/CAT50 taper.

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12
Q

What is the spindle power of the JD422?

A

Max power: 30 HP; Continuous power: 25 HP.

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13
Q

What is the maximum spindle torque of the JD422?

A

261 ft-lbs at 60% ED.

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14
Q

What is the spindle speed range of the JD422?

A

44 to 10,000 RPM.

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15
Q

How is thermal stability maintained in the spindle of the JD422?

A

With a spindle chiller and air-oil bearing lubrication.

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16
Q

What are the dimensions of the JD422 table?

A

157.48” x 70.87”.

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17
Q

What is the maximum workpiece size for the JD422?

A

Length: 157.48”, Depth: 70.87”, Height: 30”.

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18
Q

How many T-slots are on the JD422 table?

A

Nine T-slots, 1.102” wide, 7.87” pitch.

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19
Q

What is the height of the JD422 table from the floor?

A

40.55”.

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20
Q

What material handling capability does the JD422 table have?

A

Supports workpieces weighing up to 33,069 lbs.

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21
Q

What is the standard tool capacity of the JD422’s ATC?

A

60 tools.

22
Q

What is the maximum tool diameter for the JD422’s ATC?

A

All pockets full: 4.92”; Adjacent pockets empty: 9.45”.

23
Q

What is the maximum tool length and weight for the JD422?

A

Length: 13.78”; Weight: 44 lbs.

24
Q

What is the tool selection method in the JD422 ATC?

A

Bi-directional, random access.

25
Q

What is the purpose of the ATC Auto Door in the JD422?

A

To minimize chips and coolant contamination in the tool magazine.

26
Q

What control system does the JD422 use?

A

FANUC 200FB+ with a 10.4” LCD screen.

27
Q

What is the block processing time of the JD422 FANUC control?

A

1.0ms with 400-block look-ahead.

28
Q

What are the connectivity options in the JD422 FANUC control?

A

Ethernet, USB, and RS-232C.

29
Q

What industries is the JD422 best suited for?

A

Aerospace, medical, automotive, and die mold applications.

30
Q

What is Fast Cycle-Time Technology (FCT) in the JD422?

A

It enhances tapping speeds and reduces cycle times.

31
Q

What is the coolant tank capacity of the JD422?

A

158 gallons.

32
Q

What is the chip conveyor system in the JD422?

A

Dual augers with front and rear discharge conveyors.

33
Q

What features improve chip and coolant management in the JD422?

A

Coolant ring, adjustable lock lines, air-blast, wash-down gun, and air gun.

34
Q

What is the purpose of the dual augers in the JD422?

A

To enable long run times without operator intervention.

35
Q

What ensures effective chip removal in the JD422?

A

A heavy-duty conveyor system and efficient coolant flow.

36
Q

What is the weight of the JD422?

A

80,468 lbs.

37
Q

What is the required floor space for the JD422?

A

490” x 235” x 170.3”.

38
Q

What is the spindle clamping force in the JD422?

A

4,497 lbf.

39
Q

What machining accuracies are achieved by the JD422?

A

Positioning accuracy of ±0.00059” in X-axis, ±0.00039” in Y-axis, and ±0.00027” in Z-axis.

40
Q

How does the JD422 handle heavy machining operations?

A

With robust guideways, a 30 HP spindle, and a table capacity of 33,069 lbs.

41
Q

What is the constant torque range for the JD422 spindle?

A

44 to 500 RPM.

42
Q

What industries would benefit most from the JD422?

A

Heavy machining industries like aerospace and automotive.

43
Q

How does the JD422 maintain structural integrity?

A

Precision hand-scraped joints and Meehanite castings ensure rigidity and stability.

44
Q

What is the rapid traverse rate of the JD422?

A

591 IPM in X and Z axes, 787 IPM in Y-axis.

45
Q

What is the spindle torque at continuous rating for the JD422?

A

211 ft-lbs.

46
Q

What is the function of precision hand scraping in the JD422?

A

To improve structural geometry and minimize electronic compensation.

47
Q

How does the JD422 ensure long tool life?

A

Its Step Bridge Design minimizes weight imbalance during machining.

48
Q

What coolant system helps flush chips in the JD422?

A

A coolant shower system with adjustable nozzles.

49
Q

What are the cutting feed rates in the JD422?

A

394 IPM in all axes.

50
Q

What is the power source requirement for the JD422?

A

220 volts, 3-phase, 90 KVA, with a 220 AMP breaker.

YCM Bridge Mill Mastery | EAGLE MACHINE INC. (11 decks)

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