HK-LH630(A)

OPTIMIZED STRUCTURE DESIGN

A Perfect presentation of Structural Rigidity and Dynamic Stability

• Box type structure design combined with internal ribbing to achieve outstanding rigidity and deformation free performance.
• One-piece fabricated base provides a solid support for the entire machine.
• Traveling column structure effectively enhances operation efficiency.
• Linear guideways are deployed on the step structure of X-axis for higher cutting stability.
• X, Y, Z-axes are all mounted with roller type linear guideways with outstanding heavy loading capacity.
• Chip augers are equipped at both sides of the base, allowing for the removal of chips immediately to fast travel, as well as stable and smooth vertical movement.
• Chip augers are equipped at both sides of the base, allowing for the removal of chips immediately during machining.

TWIN CHIP AUGERS

• There is one each of chip auger mounted at the right and left side of the base, which can deliver chips generated during cutting to the chip conveyor at the back side of the machine.
• The chip augers can prevent thermal effects that occur due to chip accumulation and keep the machine interior clean at all times.

MACHINE STRUCTURE OF HK-LH-800 (A)

• The massive base and robust column combined with internal ribbing ensure lifetime deformation free performance, while exhibiting outstanding rigidity and stability.

AUTOMATIC PALLET CHANGE (APC)
FAST, STABLE, HIGH PRECISION POSITIONING

SWING TYPE AUTOMATIC PALLET CHANGE

• The swing type pallet change dramatically saves machine step time for loading and unloading workpieces.
• Pallet change motions are fast and smooth.
• Pallet swing speed can be adjusted according to load requirements (Servo APC only)

HIGH ACCURACY OF PALLET POSITIONING

• A servomotor in combination with the use of 4 tapered cones, ensuring high positioning accuracy, drives the pallet rotation.
• B-axis indexing accuracy is 0.001°.
• B-axis can also be indexed through gear with 1° of indexing accuracy. The gear disk is matched by hydraulic power featuring high repeatability.

TABLE: 0.001°

TWO-SECTION WORM / WORM GEAR SET

• The specially designed tooth shape features double contacting teeth number than that of traditional designs, and the contact area is five times more. As such, the force exerted on the unit area of tooth flank on a worm gear is only 1/5 of the average value, which means less wear.
• The worm shaft is designed with two sections. Backlash adjustment is made conveniently by simply turning the single side of the worm shaft. Normal backlash is adjusted to 5～7μ.
• Low pressure angle design is much smaller than the 12°～15° design of double load, so that the motor output torque can be fully applied in the rotating torque direction. This feature is suitable for synchronized continuous milling operations.

SPINDLE BEARING

The table is equipped with large embedded type axial radial bearings, which can withstand the loads in horizontal and vertical directions. In addition, it can also enable the disk to rotate smoothly and accurately for a long time.

BRAKE SYSTEM

The table employs full circumference brake with axial clamping. As the clamping surface is the axial area of the spindle, the center point is not offset, and it can avoid deformation on the disk and variations in accuracy. Thus, high rigidity and heavy cutting resistance can be achieved. General circumference braking may cause the table center to offset. As the force exerted is in the radial direction, table center offset may occur.

TABLE: 1°

• The table employs a special clutch gear for positioning. Mechanical positioning accuracy can reach ±3 arc-sec. It can maintain high accuracy and high stability even after long-term use.
• The contact are of the positioning teeth is maximized to achieve stable accuracy, high rigidity, and heavy cutting resistance.
• The table interior is designed with moisture-proof structure that effectively prevents cutting fluid and chips from entering the body of the rotary table.

FEATURES OF TAPERED CONE AND SLEEVE

• The table is designed with 4 tapered cone holding mechanism. With features of fast positioning, high accuracy, and extra powerful holding force, table stability and positioning accuracy can be assured. A powerful air blow system blasts air through the tapered cones for cleaning chips. The airtight detection on the tapered cone ensures table holding stability and positioning accuracy.
• The tapered cone is an enclosed design instead of the conventional open type design. This ensures that cutting fluid and chips do not enter the sleeve during pallet change, while ensuring holding force and accuracy for a long time.

MAX. WORKPIECE SIZES

Automatic Tool Changer

The cam type tool changer provides fast tool change. Fixed tool number and tool pocket position make it convenient to memorize the tool number and pick the tool.

40 Tool Chain Type Magazine (Standard)

• Tool loading capacity: 40 tools
• The tool magazine is driven by a hydraulic indexing motor for fast tool change and smooth motions.
• Bi-directional random tool selection

60 / 90 / 120 Tool Chain Type Magazine (Optional)

• Tool loading capacity: 60 tools
• The tool magazine is driven by a servomotor for fast positioning, smooth motions, and minimum trouble.
• Bi-directional random tool selection

Fanuc Controller With Self-developed Software

The Heake HK-LH horizontal machining center is equipped with a FANUC controller combined with the use of Heake self-developed software that dramatically upgrades convenience in machine operation and management.

 A  ROLLER TYPE LINEAR WAYS ON THREE AXES

The X, Y, and Z-axes are all mounted with heavy-duty linear ways, with a great span between the ways, resulting in high rigidity, low friction coefficient, and outstanding dampening capability.

 B  HIGHLY RIGID COLUMN

The column is a box type double wall structure, preventing deformation even after years of use.

 C  TRAVELING COLUMN

The column moves smoothly and helps to increase the operation efficiency of the machine.

 D  ONE-PIECE FABRICATED BASE

The H-shaped base is one-piece fabricated, providing solid support for the entire machine.

 E  STEP LAYOUT OF LINEAR WAYS

The column moves on linear guideways with step layout, enhancing cutting stability.

 F  DOUBLE AIR CYLINDERS
COUNTERBALANCE ON Y-AXIS

Y-axis vertical movement is counterbalanced by the use of two air cylinders with fast response on axial direction change. Thus, smooth and stable vertical movement can be achieved.

FANUC α15/8000
15KW / 18.5KW
Drive type: Gear (#50)
Max. spindle speed: 60000rpm

FANUC α18/8000i
18.5KW / 22KW
Drive type: Gear (#50)
Max. spindle speed: 60000rpm

FANUC α22/8000i
22KW / 26KW
Drive type: Gear (#50)
Max. spindle speed: 6000rpm

High Precision Spindle

• The long nose spindle design makes the cutting tool easy to access the workpiece, effectively preventing spindle chatter during machining.
• Spindle nose taper: BBT-50

Fixed Type Table

HK-LH-800 with single pallet

LARGE MACHINING CAPACITY *Mineral: S45C

Motor	22/26kw / 4000rpm
Tool diameter	Ø160 mm
Speed	290 rpm
Feed rate	1150 mm/min
Cutting depth	5 mm
Cutting width	140 mm
Material removal rate	805 cc/min
Load	90%

Motor	22/26kw / 6000rpm
Tool diameter	Ø160 mm
Speed	330 rpm
Feed rate	1080 mm/min
Cutting depth	4.5 mm
Cutting width	140 mm
Material removal rate	680 cc/min
Load	97%

Motor	22/26kw / 4000rpm
Tool diameter	Ø40 mm
Speed	410 rpm
Feed rate	355 mm/min
Cutting depth	30 mm
Cutting width	12 mm
Material removal rate	127 cc/min

Motor	22/26kw / 6000rpm
Tool diameter	Ø40 mm
Speed	430 rpm
Feed rate	330 mm/min
Cutting depth	30 mm
Cutting width	12 mm
Material removal rate	118 cc/min

Motor	22/26kw / 4000rpm
Tool diameter	Ø75 mm
Speed	750 rpm
Feed rate	116 mm/min

Motor	22/26kw / 6000rpm
Tool diameter	Ø75 mm
Speed	700 rpm
Feed rate	105 mm/min

Motor	22/26kw / 4000rpm
Tool diameter	M42 x 4.5
Speed	38 rpm
Feed rate	171 mm/min
Motor load	50%

Motor	22/26kw / 6000rpm
Tool diameter	M42 x 4.5
Speed	38 rpm
Feed rate	171 mm/min
Motor load	62%

Centralized Pneumatic System

All pneumatic parts are centralized, making the machine appearance neat and maintenance easy.

Independent Air Accumulator

The pneumatic system is equipped with a 150-liter large capacity air accumulator, which provides stable air supply to ensure motion stability of the air cylinders.

Three Blocks On Each Linear Way On Column

Each linear guideway on the column is equipped with three blocks, increasing the supporting force on each linear way. It also makes column movement more stable.

Extended Block

Each linear guideway is equipped with extended heavy-duty blocks for upgrading loading capacity and dynamic stability.

Air-cooling Through Ballscrew (Standard)
Oil-cooling Through Ballscrew (Optional)

Cooling through ballscrew is available via two methods, dry air cooling (standard) and full oil cooling (optional) to ensure high machining accuracy.

 A  Chip Flush On Machine Top (Optional)

The machine top is equipped with several chip flushing nozzles. With the comprehensive chip flushing design, thermal deformation problems during machining can be fully avoided.

 B  Scissors Type Telescopic Guard

The X-axis is protected by scissors type telescopic guard with smooth motions.

※ Scissors type telescopic guards are used on X, Y, and Z-axes.