CNC portal milling center. Gantry machining centers for metal. Vertical milling units

One of the most modern and multifunctional types of metal-cutting equipment is the CNC machining center. Machining centers are multi-operational machines that allow complex high-precision machining of products.
In the course of the work process, the machining center allows you to combine a number of various metal processing operations: milling, turning, drilling, both in draft and in finishing form.
A feature of CNC machining centers is a very high level of automation, which allows you to perform all processing operations with little or no operator involvement, including loading and unloading workpieces and finished parts using pallet changers and robotic systems.

The main types of CNC machining centers:

vertical centers;
horizontal centers;
portal centers.

The first two types differ only in the axis of the spindle, respectively vertical or horizontal. The third species constitutes a separate group with many differences.

The main difference between portal machining centers is their capabilities. Such centers are designed for processing massive and large parts.
Also, machining centers are actively used in the manufacture of dies and molds, which are subject to the highest requirements for accuracy.
Due to their versatility, modern machining centers can perform several tasks at once, while reducing time and costs and significantly improving the quality of finished products.

CNC portal machines include machines that have a portal design, that is, the presence of two vertical racks connected by a cross member.

The table of such a machine moves between the columns in only one direction (back and forth) or the table does not move (stationary), but the portal rack moves along the table.

With a tool magazine, a CNC portal machine is classified as a machining center.

Equipment Features

Gantry milling centers usually have one spindle on which a tool or spindle head is mounted to allow for automatic tool change and ease of operation. In addition to the tool magazine, portal OTs, as a rule, have an additional magazine of heads, the change of which is also carried out automatically according to the program.

Portal OTs can be in pallet design - with automatic pallet change. Also, portal OCs have a chip conveyor and can have a cabinet fence of the working area to prevent splashing of chips and coolant during processing.

Portal machining centers are capable of performing an extended range of workpiece processing operations (milling, drilling, threading, boring and other operations), including simultaneous processing along 5 axes

Modern equipment manufacturers are trying to take into account the needs of modern industry. For example, our partner from Taiwan, KEN ICHI, develops high-speed and power portal OCs for specific tasks in the aircraft and space industries.

Selection options:

Before you buy a CNC portal machine, you need to decide on the following parameters:

workpiece dimensions
workpiece material
the required level of processing accuracy;
degree of production automation;
production volumes.

Why "Pumori-engineering invest"

The Pumori-engineering invest company is the exclusive supplier in the Russian Federation of high-performance high-tech portal machining centers of the Japanese company Okuma and the Taiwanese manufacturer KEN ICHI. The cost of each machine includes delivery to any point in Russia, commissioning, personnel training, as well as warranty service. Post-warranty service is carried out under a separate agreement.

We also conduct technical audits and develop projects for technical re-equipment and modernization of production, provide service and warranty maintenance of equipment, perform metalworking outsourcing on our own high-precision equipment of Okuma, Manurhin (France) in Yekaterinburg.

Our managers will help you choose a machine, make calculations, conduct technical advice and provide information about the terms of leasing - leave a request through the feedback form, write to the mail or call.

FD Series Fixed Gantry Double Column Gantry Machine
Massive cast-iron construction of the machine allows maximum absorption of vibrations during high-energy processing
The rigidity of the frame structure, consisting of a massive frame, two columns and a powerful cross, allows you to achieve high positioning stability and power during machining

bed- this is the main bearing unit of the machine, which serves for the installation of parts and assemblies of the machine; relative to it, moving parts and assemblies are oriented and moved.

The bed is a massive structure made of modified cast iron. Box-in-box construction is used to give the frame structure and vertical columns maximum strength.

This design allows these elements to be 50% stiffer than competitors and provides increased stability and load capacity.

The same design is used in the manufacture of the portal and the carriage, which provides a strong support for the headstock when processing heavy and large parts.

To achieve the best surface accuracy and rigidity of the entire structure, the mating surfaces of the bed base, columns and portal are scraped by hand.

Ball screws (ball screws) accuracy class C3 are used to increase the speed and accuracy of movements.

Drive screws have high rigidity, combined with high running smoothness and accuracy, which ensures maximum machining quality. In screws of this class, the nut does not have direct contact with the screw. It does not slide on it, and balls roll between the screw and the nut (as well as in a ball bearing). That is, sliding is replaced by rolling, which at the same time significantly reduces friction (more than 100 times). The special heat treatment of the ball screws and the absence of slip significantly increase the working life of the pair. Gears of this type do not need frequent additional maintenance and adjustment, and with proper operation and timely lubrication, they retain their high performance throughout the entire life of the machine.

The table shows the dependence of the accuracy class of the ball screw and the axial clearance (backlash) in microns.

This series of machines are used linear (Linear Way) guides.

Linear guides (LNC) are made in the form of a prismatic guide along which one or more carriages move with the help of ball (ball linear guides) or roller (roller linear guides) rolling elements circulating in the cage. The linear guide is made separately and attached to the base of the machine. Such guides implement rolling friction. Friction losses in the LNC are the sum of losses caused by the friction of the rolling elements against the cage and losses proportional to the load.

Roller guides are used in FD series machines, since their load capacity is much higher than that of ball guides with equal cross-sectional dimensions (see diagram).

The dynamic load capacity of the carriage varies from 27.7 kN to 275.3 kN, the static load capacity - from 57.1 kN to 572.7 kN.

Linear guide carriages provide high-precision movement (deviations in the travel geometry - within 5 microns) and positioning of the tool relative to the workpiece.

In carriages of this type, four rows of rollers are placed at an angle of 45º, so they equally perceive the load both in the radial and longitudinal directions.

Typically, a linear guide has a negative clearance (preload) between the raceway and the rollers, which is required to increase the rigidity of the assembly or improve its rotational accuracy. The use of preload reduces the noise level during operation, compensates for wear and tear of the rollers during operation.

Carriages of this type have large dimensions (up to 300 mm long and 120 mm wide) and reach a weight of 11 kg.

Spindle extremely balanced and has extremely high static and dynamic rigidity. The spindle is installed in a rigid cast housing, which eliminates the presence of vibrations and increases the accuracy of processing.

In the FD series, the headstock has an optimal proportion of 1:1.25. This design reduces the overall weight of the headstock while allowing the spindle to penetrate deeper into the workpiece.

In the basic configuration, an additional spindle oil cooling, which ensures a uniform distribution of temperatures, and, accordingly, resistance to overheating, preventing thermal deformation. This internal cooling system allows smoother precision machining.

Coolant cooler installation(option) is used to stabilize the temperature conditions of the tool and equipment, allows you to effectively cool the circulating coolant, which ensures the operation of the spindle at a constant temperature and maintains machining accuracy for a longer time.

It is possible to optionally use a spindle with internal coolant supply.

Coolant from the inside cools the entire spindle, tool, insert and workpiece.

High-pressure coolant supply (up to 20 bar) directly into the cutting zone contributes to the formation of smaller segmental chips and allows the tool to be used for deep drilling operations and milling of complex contour surfaces.

The machines of this series are equipped 2-speed ZF gearbox(Germany) with a gear ratio of 1:4 (increases the torque by 4 times), allowing you to transfer maximum power at a spindle speed range of 208-2500 rpm. Maximum torque 660N×m.

Gears of the ZF gearbox are made of high quality steels, precisely ground and rolled, hardened and stress resistant to high loads, with a hardness of HRC 55-60.

The gear train provides high stability, it is capable of transmitting high powers and has a relatively small size.

Spindle gearbox provides high and low speed range: high speed range for high speed machining; low speed range provides high torque for heavy cutting.

The graph shows the dependence of spindle power and torque depending on the engine model.

For faster and better chip removal from the working area, the machine is equipped as standard with 2 chip conveyors screw type and one belt conveyor.

The working chamber of the screw conveyor is a hollow cylinder, inside which a screw (auger) is installed, based on bearing assemblies.

The performance of the screw conveyor depends on the diameter, pitch and speed of the screw.

Chips from the screw conveyors enter the linear conveyor and are discharged into a special tank.

The presence of chip conveyors reduces equipment downtime, greatly facilitates the process of maintenance and cleaning of the machine.

Tool shop- device for automatic tool changer. As standard, the magazine is designed for 24 tools.

A tool magazine with a manipulator is located outside the working area.

The tool change process begins with the spindle moving along the Y and Z axes to a certain extreme position, and the tool change itself is carried out using a 2-arm manipulator.

The tool magazine and the headstock of the machine are in a stationary state, which significantly reduces the time for changing tools.

Inductive sensors monitor the presence of the tool and the correct position of the tool holder in the socket.

The tool magazine is separated from the working area by a partition (casing) made of stainless material. This protects the tools and tool changer from dirt.

As an additional option, it is possible to install 32, 40, 60, 80 and 120-station tool magazines.

Oil separator- this is a device for separating the lubricant from the coolant circulating inside the machine.

To clean the cutting fluid, coolant filters are used, which remove microparticles from it after machining.

An oil separator is used to increase the life of these filters, but at the same time contributes to the deterioration of lubrication due to a decrease in the percentage of lubricant in the coolant.

Usage automatic workpiece measuring device(option) provides high locating accuracy, reduces the time for installation and locating the part.

This device allows you to set the part with reference to the CNC of the machine, allows you to measure the dimensions of the workpiece in the process of its processing and to control the parts processed after the changeover of the machine with automatic updating of the tool offset.

Contact measurements make it possible to dispense with the use of expensive clamping devices and the lengthy procedure for setting the workpiece relative to the machine axes manually using dial indicators. The use of measuring sensors installed in the machine spindle offers the following advantages:

reduction of machine downtime;
automation of workpiece mounting, its alignment with respect to the machine axes and correction of the angular position of the rotary axis;
decrease in the volume of marriage;
increased productivity and versatility in relation to the volume of a series of machined parts.

Tool measuring device Tool Laser Probe NC4 or Tool Probe TS27R (option)

The tool setting system allows you to measure the size of the tool before cutting and check for damage or breakage of the tool during processing on the machine.

The procedure for using plane-parallel gauge blocks and entering corrections in manual mode is time-consuming and highly influenced by the human factor. Meanwhile, tool setting probes are easy to install on CNC machines and automate tool setting. This provides the following benefits:

significant time savings and reduced machine downtime;
high accuracy of measuring the length and diameter of the tool;
automation of calculation and input of tool offsets;
no errors associated with inaccurate actions of the operator;
detection of tool breakage directly in the process of manufacturing the part;
decline in marriage.

PURPOSE:

The machine is a technological unit of the MHM line (Massiv-Holz-Mauer®).

APPLICATION AREA:

The 5-axis portal is equipped with working units, thanks to which it is possible to carry out any cuts: longitudinal and at an angle, mill holes of any shape and size, drill blind and through holes. All types of processing do not require a tool change, so that the products are made in a short time.

PRODUCTS RECEIVED

PROCESSING SCHEME:

DESIGN FEATURES:

Thanks to the movable base of the PBA portal machining center, workpieces of any length can be machined, up to 8 m wide and 48 cm thick on 5 sides.

The working area of the machine can be divided into 2 parts: the operator loads the workpiece into the machine in the 1st zone, while the portal automatically processes the workpiece in the 2nd zone. Workpiece clamping is optional due to special support tables and design. The software package includes a function to import machining data from standard CAD design programs. The operator can also enter machining data directly into the machine or modify it. A clear graphical control system is available for this.

The working units of the machining center can be equipped with a wide variety of tools such as dovetail end mills, circular saws and profile cutters. Since the movement of all tools is carried out through programming, the processing possibilities are greatly increased.

Possible treatments:


Drilling at an angle	Grooves and notches	Drilling patterns


Special connection types	Surface treatment	Angle cuts


Cuts at any angle	Roof truss processing	grooves


Any holes	Various grooves	Any shape

Processing "SIP" panels

PBA units

5 axis chain saw

The chain saw is equipped with an engine with a power of 15 kW and can be positioned in 5 axes. Thanks to the optimum sawing speed, a very high quality of the processed surface is achieved. The saw blade can be rotated 360° and tilted from 0° to 90°, which allows you to perform all possible types of cuts: longitudinal, inclined and at an angle, as well as to make grooves of any width on the sides. Thanks to the special geometry of the saw blade, corners can be kept very precisely (without radii).

5 axis chain saw

Vertical milling units

Vertical milling units are equipped with motors with a drive power of 7.5 kW to 22 kW. Can be equipped with various end cutters, profile cutters, wedge cutters or disc cutters (max. Ø 310 mm; max. length 350 mm). With the help of vertical processing units located on top, it is possible to mill any holes and profiles, as well as to carry out all types of profiling, mini-tongue connections, grooves, tongues, etc. By adjusting the speed of the motors (up to 6000 rpm), you can set the optimum cutting speed for each tool.

Vertical end mill

Vertical drilling units

The vertical drilling units (3.0 kW) can drill workpieces up to 480 mm thick. Thanks to the computer-controlled working stroke, it is possible to carry out all types of blind hole drilling, countersinking or end dowel milling. Infinitely variable speed control up to 3000 rpm.

Vertical drilling unit

Marking pencil

Using a marking pen, you can mark the upper surface of the workpieces or apply any lines (straight lines, profiles, circles, semicircles). The operator has special pencils in blue, red, green and black colors that write on both dry and wet wood. Optional: marking device with marking chalk ø 12 mm.

Marking sample

4 axis milling unit

The 4-axis milling unit is equipped with a 5.5 kW motor. It can be used for slot and tenon milling or for side hole milling/drilling. Due to the presence of double-sided fastening, two tools can be installed at the same time. It can be a cylindrical cutter with max. o 350 mm x 120 mm, as well as end mill, dovetail cutter or drill bit. The tool is freely positioned.

4 axis milling unit

5 axis milling unit with tool magazine

The 5-axis milling unit with a motor power of 38 kW is equipped with a tool changer (up to 11 tools). The appropriate tool is automatically selected from the magazine depending on the requirement for the building material to be machined. Management and selection of tools is carried out through the PBA machining center program. In the basic parameters of milling, drilling and sawing tools, in addition to information on the type, diameter, length and magazine space, there is also information on the optimal speed, which is automatically called up if necessary.

Milling and planing unit

Thanks to this unit with a motor power of 22 kW, it is possible to level the surface of the workpieces in order to obtain the same thickness of the entire MHM panel (optional: grinding).

Milling and planing unit

5-axis circular saw unit

This unit allows you to reduce the processing time (sawing) of the part. The unit is positioned automatically according to the cutting program. Saw diameter 100 mm, drive power 22 kW.

PBA Software

The designable Hundegger control system software is characterized by easy data entry and user-friendliness. The data can be automatically imported from any woodworking CAD software or entered directly through the control system.

ease of data entry
automatic data import
free software update for a long time!

Designable PBA control system logo

Data import

Data can be automatically imported from any woodworking CAD software.

Data import

Direct data entry

Parts can be designed by means of the plant control system program.

Direct data entry

Optimization

Optimization can be carried out according to various criteria. Different parts can be optimized depending on the available source material.

Optimization

Language

Easy translation of the program into the user's language.

Language selection

Formation of specifications

With the click of a button, the program generates all the necessary specifications for the relevant building objects.

Order sheet, cutting chart, sheet with dimensions, etc.

Formation of specifications

Remote maintenance

Thanks to remote maintenance, our customer service can help you quickly and at no additional cost.

Remote maintenance

Photos of the PBA machine in production

STANDARD EQUIPMENT:

The PBA portal center is part of the MHM line.

ADDITIONAL EQUIPMENT:

Cutting tool set;
Input/output conveyors;
Aspiration;
Compressor.

It is STAN LLC.

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