YCM JC16 Flashcards
What are the X, Y, and Z-axis travel dimensions of the JC16 machine?
X-axis: 64.2” (1,630 mm), Y-axis: 33.9” (860 mm), Z-axis: 30” (762 mm).
What is the maximum table load capacity of the JC16?
4,409 lbs (2,000 kg).
What type of motors and encoders are used in all axes of the JC16?
Direct Drive motors with Absolute positioning encoders.
Why are Direct Drive motors with Absolute encoders beneficial?
They provide backlash-free positioning for reliable and stable accuracy, eliminating the need for zero-return.
What type of casting is used in the JC16, and why is it advantageous?
High-quality, rugged MEEHANITE™ castings ensure high stiffness, rigidity, and vibration dampening, resulting in superior thermal stability and cutting performance.
How does the JC16 minimize thermal growth in its design?
By using fixed, pre-tensioned ballscrews in all axes.
What are the sizes of the roller guideways in the X, Y, and Z axes?
45mm in the X & Y axes (outer guideways) and 55mm in the Z-axis.
What type of guideways are used on the inner Y-axis of the JC16?
35mm NR Type Linear Ball-Type Guideways.
What is the benefit of using cylindrical roller guideways in the JC16?
They provide greater contact area and vibration-damping characteristics, resulting in improved rigidity, cutting performance, and surface finish.
What is the rapid traverse rate of the JC16 in the X and Y axes?
945 inches per minute (IPM).
Describe the spindle of the JC16.
It has a heavy-duty 10,000 rpm spindle with Dual Contact CAT50 taper, grease lubrication, and a spindle chiller.
What is the maximum spindle motor power and torque of the JC16?
30 HP (22 kW) and 261 ft-lbs (354 Nm) of torque.
What are the benefits of the Dual Contact BBT50 spindle taper?
Provides increased rigidity and stability for heavy-duty cutting applications.
How many tools does the standard Automatic Tool Changer (ATC) hold?
32 tools, with an optional upgrade to 40 tools.
What is the tool-to-tool change time for the JC16’s ATC?
4.2 seconds.
What is the chip-to-chip time for the JC16’s ATC?
9.4 seconds.
How does the JC16 ensure precision in its machine structure?
Through precision hand-scraped joints that increase structural rigidity and minimize electronic compensation.
What features contribute to the JC16’s efficient chip and coolant management?
Spindle coolant ring with adjustable lock lines, cutting air-blast, coolant wash-down gun, air gun, and a unique shower coolant system.
What is the purpose of the JC16’s shower coolant system?
To effectively flush and remove chips from the machine’s interior using up to 10 adjustable coolant flushing nozzles.
How many augers are included in the JC16, and where are they located?
Four augers; two on either side of the table in the Y-axis.
What type of chip conveyor does the JC16 have?
A rear discharge scraper type lift-up chip conveyor.
What is the function of the ATC auto door on the JC16?
To minimize chips and coolant from entering the tool magazine area, reducing the risk of contamination and potential damage.
What is the maximum tool length and weight for the JC16’s ATC?
Maximum tool length is 13.78” (350 mm), and maximum tool weight is 44 lbs (20 kg).
What is the standard table size of the JC16?
68.1” x 33.9” (1,730 mm x 860 mm).
What is the maximum workpiece size the JC16 can handle?
Length: 64.17” (1,630 mm), Depth: 33.9” (860 mm), Height: 30” (762 mm).
What is the height of the tabletop from the floor on the JC16?
40.94” (1,040 mm).
What type of tool selection method does the JC16’s ATC use?
Bi-directional, random access.
What are the positioning accuracies of the JC16 without scales?
X-axis: ±0.00055”, Y-axis: ±0.00039”, Z-axis: ±0.00039”.
What are the repeatability accuracies of the JC16 without scales?
X-axis: ±0.00039”, Y-axis: ±0.00027”, Z-axis: ±0.00027”.
What ambient temperature is recommended for optimal accuracy of the JC16?
68°F ± 3°F in a temperature-controlled environment.
What are the benefits of the JC16’s fixed, pre-tensioned ballscrews?
They enhance rigidity, stability, and precision while minimizing thermal growth.
What is the purpose of the spindle chiller unit in the JC16?
To provide thermal stability and prolong spindle life.
Can the JC16 be equipped with a Coolant Through Spindle (CTS) system?
Yes, a 1,000 psi CTS can be easily added as an option.
What kind of bearing lubrication is used in the JC16’s spindle?
Grease lubrication.
What is the cutting feed rate of the JC16 in all axes?
Up to 394 IPM (10 m/min).
What type of bed construction does the JC16 have?
Meehanite cast iron bed construction for enhanced rigidity.
What are the ballscrew diameters for the X, Y, and Z axes?
All axes use 45 mm (1.77”) diameter ballscrews.
What is the function of the heavy tool and big tool functions in the JC16’s ATC?
To accommodate larger and heavier tools safely during automatic tool changes.
How does the JC16 handle heavy machining operations?
With cast ballscrew housings directly into the machine base and saddle for optimal stiffness.
What is the standard color scheme of the JC16?
YCM White, Blue, and Black.
What are the electrical requirements for the JC16?
220 Volts, 3 Phase, 60 Hertz, with a breaker size of 162 Amps.
What is the coolant tank capacity of the JC16?
174 US gallons (660 liters).
What are the dimensions required for the JC16’s floor space?
184.25” (W) x 193.18” (D) x 135.07” (H).
What is the net weight of the JC16 machine?
34,172 lbs (15,500 kg).
How does the JC16 ensure efficient chip removal during long run-times?
With four augers and a rear discharge scraper type lift-up chip conveyor.
What type of guideways are used to enhance the JC16’s load capacity?
High load capacity roller guideways and linear ball-type guideways.
What is the benefit of the JC16’s inverter-type cam-box motor in the ATC?
It allows for easy ATC recovery in the event of a mishap.
What are the recommended conditions for maintaining the specified machine tolerance of the JC16?
Use of foundation pads and anchoring bolts, and maintaining an ambient temperature of 68°F ± 3°F.
How does the JC16’s design contribute to longer overall service life?
Through the use of cylindrical roller guideways and robust machine construction.
What kind of air supply is required for the JC16?
Minimum pressure of 80 psi (5.5 bar) with an air dryer for inlet air temperature of 35°C or below.
