Description:

Used WEEKE BHC-250e CNC Machining Center (2003)

Weeke CNC Router: This BHC-250e is a truly industrial machine designed primarily for
point-to-point boring and machining of flat components without special workpiece fixtures.

Weeke is uncompromising with high quality standards. They are an ISO 9001 certified machine tool builder. Weeke uses world class suppliers for critical items not made in house. In fact, most of the externally sourced components are sold and serviced on a worldwide basis and, of course, here in the U.S. Insistence on quality and highly industrialized components results in a very stable process--one that requires a minimum of inspection, preventive maintenance, or repair.

The BHC-250e is constructed on a plate steel frame, with heavy steel ribs (gusset plates) welded to the frame inside the base to insure stability. The design and substantial mass provide a solid vibration-free platform for the machining head. All axes move smoothly and precisely on THK linear motion guides. THK guides were designed to produce straight line tracking at high travel rates, with outstanding stability--both in the radial and side directions. The X-axis is driven by a zero-backlash, pre-loaded, helically ground rack and pinion gear system. The Y and Z-axes are driven by high precision ball screw. Indramat solid state drives and brushless AC servo motors move the axes.

The BHC-250e features a Windows-based control with intuitive programming software.

Vertical Boring with 11 Individually Selectable Spindles

Six (7) spindles are aligned in the X-axis and are typically used for row holes. There are also four (4) spindles aligned in the Y-axis. All spindles are on 32 mm center distances. The spindles require standard boring bits, 70 mm long, up to 20 mm in diameter, with 10 mm diameter smooth shanks. The vertical boring gear box is driven by a 1.5 kW motor.

Horizontal Boring with Six Individually Selectable Spindles

The horizontal boring block has four (6) spindles. The drill spindles are positioned such that two drills bore to the left and two to the right (0? and 180?) of the panel. Single bores are provided for the front, and back of the machining head. (90?, and 270?).

Vertical Routing With Automatic Tool Changer (ATC)

A 6.0 kW vertical router motor with an automatic tool changer (ATC) is located on the right side of the machine frame. The spindle motor is fitted with grease sealed ceramic bearings for high performance and maximum bearing life. This spindle uses the ISO 30 standard for the taper in the spindle and the accompanying tool holders. The exceptional mass and rigidity of the machine's frame helps the router achieve a good surface finish with high feed rates and long tool life.

The BHC-250e features an automatic tool changer to perform tooling changes during program execution. This function can be a great advantage when different tool diameters and/or profiles are required to complete a given workpiece. A magazine for five (5) tools is positioned at the right end of the machine base. The magazine accepts ISO 30 tool holders with tapered shanks. ISO 30 is available in left or right rotation (CW or CCW), with a complete selection of collet sizes in inch or metric increments.


Frequency Inverter

A solid state frequency inverter manufactured by KEB powers the router. The inverter output is programmable through the control with constant power from 9000 rpm to 18000 rpm. Spindle rotation, RH or LH, is also programmable. The inverter has a 7.0 KVA power rating.


Grooving Saw

The X-axis grooving saw is powered by a 1.5 kW, 60 Hz motor. It is installed at the front of the machining head. Maximum recommended cross section of material to be removed with the saw is 50 mm2. A 100 mm diameter saw blade may be used.


Dust Extraction

Dust extraction is provided by a central dust collection manifold. The connection port at the back of the manifold is 200 mm diameter.

Panel Support Benches

Six (6) panel support benches are supplied with the machine. The support benches have a manual release conveniently located on the front to disengage the brakes for X-axis adjustment. The machine is equipped with a total of 12 standard vacuum pods. Ten (10) of the vacuum pods are 140 mm x 115 mm x 100 mm. Two (2) narrow pods are included in this package. These pods are 125 mm x 75 mm x 100 mm. With six (6) support benches and both left and right zero stops, it is possible to load the machine with two (2) work pieces at a time.

Vacuum Pump

A powerful vacuum pump with 40 cubic meters/hour capacity is suitable for both raw board (particleboard/MDF) and finished material (melamine or plastic laminate).

Perimeter Fence

A perimeter fence with safety interlock helps prevent accidental intrusion from the ends or back of the machine.

Safety Mats

Safety mats assist in stopping the machine if the operator enters the working area while the machining head is in operation. The mats are divided into two (2) working zones so you may load or unload parts at one end of the machine while the machine continues to work on the opposite end.

Weeke 2000-PC

The machine is equipped with the Weeke 2000-PC continuous path control with intuitive programming software. The Weeke control features a graphic operator interface with icons to simplify operation. Programming with Windows based WoodWOP software is with simple coordinates or by the entry of formulas to define the relationship between panel size and hole locations (parametric programming). Some of the features of the Weeke 2000-PC CNC control include the following:

• Windows-based Personal Computer (PC) for operator interface
• 8.0 GB hard drive
• 64 MB of RAM
• floppy disk drive 3.5"
• the PC is connected to a NUM programmable logic control for accurate and reliable control of all machine functions
• high resolution color graphics (VGA) with 15" color monitor
• full function industrial keyboard
• bar code reader interface and software included (scanning device is optional)
• simultaneous three-axis linear control
• EtherNET interface for local area network (connection to office PCs)
• fully compatible and can be directly integrated with Holzma Cut-Rite Modular software
• report generation software included
• post processor for DXF file conversion is included
• RS-232 serial interface for simple PC connection

Remote Diagnostics and Technical Support

The PC control is equipped with hardware and software, which allows for remote diagnostics and technical support. This system includes an on-board PC modem and remote service manager software. With this configuration, Stiles technical support can connect to the IPC control from a remote location to assist with troubleshooting and machine problem or error diagnosis.

Off-Line Programming

In addition to the WoodWOP programming software in the machine control, this same software is included (on CD ROM) for a PC. Using a PC in the office, the machine can be programmed off-line with the same intuitive icon driven WoodWOP software that the operator has within the machine control. The PC software has no copy protection. If you have a network, you may install the software on as many PCs as you like without buying additional copies of the software.


Simulation and Cycle Time Software

The simulation software allows for graphic review of the machining process once a part has been programmed in WoodWOP. Additionally, the software calculates machine cycle times required to produce the part, based on the machine parameters. One copy of the software is pre-loaded on the machine. Additional copies of the software are available as optional equipment.

Technical Specifications

Number of vertical drilling spindles 11
Vertical drilling spindle power 1.5 kW
Number of horizontal drilling spindles 6
Horizontal drilling spindle power 1.5 kW
ATC router spindle power 6.0 kW
Tool Clamping System ISO-30
Tool magazine capacity 5 tools
X-axis grooving saw power 1.5 kW
Saw blade diameter required 100 mm
Number of panel support benches 6
Number of full sized vacuum pods 10
Number of narrow vacuum pods 2
Vacuum pump capacity 40 M3/hr
Length of machine 5430 mm
Width of machine 2320 mm
Height of machine 2000 mm
Working height - top of vacuum pods 920 mm (36")
Working length 2750 mm
Working width - support bench width 900 mm
Max. panel thickness for proper tool clearance 60 mm (2-3/8")
Max. drilling depth for through holes 38 mm (1-15/32")
Machine weight 2800 kg
Axis stroke; Positioning speed for X-axis 3185 mm; 60M/min
Axis stroke; Positioning speed for Y-axis 1160 mm; 50M/min
Axis stroke; Positioning speed for Z-axis 135 mm; 20M/min
Max. router position; Y-Axis 978 mm; (38-½”)

Electrical connection: 210, 240 or 480 volt, 3-phase, 60 Hz.
240 volt requires 60 amp service
480 volt requires 30 amp service
Voltage supplied must not fluctuate in excess of +/- 5% of its stated value.
Dust extraction: 200 mm diameter connection, 2000 cfm.
Compressed air: connection 1/2", pressure required 6 bar,
consumption 10-15 cfm.
Ambient temperature operating range: 50? F - 100? F


Optional Equipment and Services

Please consult the Recommended Tooling List for tools and other supplies

Bar Code Reader
Hand held scanner that reads all popular bar codes.

Note: a separate electrical line (110 volt) will need to be supplied for this device.


Exceptions

Items not covered in this proposal include:
• electrical and pneumatic service, including wiring and piping
• cabling and connections from office computers to the machine
• networking software other than that provided for the machine control
• integration of office network system (existing or newly installed) to the machine
• tooling for the machine (drill bits, router bits, saw blades) except for that which is provided for in the tooling allowance described above.

While Altendorf America Division of Stiles Machinery, Inc strives for accuracy and completeness when describing a product, some specifications may change without notification.

Dimensions

All equipment offered is made to metric standards. Dimensions shown in English measure are approximate and for comparison purposes only.

Pieces Weight (lb.) Dimensions (LxWxH, Feet)
1 8378 16.4 x 7.6 x 7.2