Gantry milling machine with cnc. Gantry cnc milling machine. Varieties and scope
Portal milling machine optimal for working with especially large parts, the dimensions of which exceed 3x2 meters. The gantry CNC machine differs from its classical counterpart primarily by the presence of numerical control, displacement and tilt sensors, as well as rotation speeds, which makes it possible to achieve greater productivity in the process. In addition, often the control system controls one universal spindle head, which copes with all operations; the spindle in such machines often has the function of pan and tilt, which adds 2 additional axes to the X, Y, Z axes.When using one spindle head, you can reduce all operations into one technological program, which can be transferred for execution to the machine's numerical control system.
Milling machines with a classical design have a single-console structure of the machine frame, as a result of which such machines have some restrictions in terms of size, as well as the weight of the workpiece being processed; often the maximum allowable size is from 2 to 3 meters, and the weight is up to 3 tons. For machining large parts, a gantry frame design is required.
The portal structure is based on two columns on which the edges of the horizontal beam are fixed. The spindle head, together with the vertically positioned spindle, moves along the guides of the crossbeam. In order to speed up processing, you can use not only one spindle, but several; for example, the side consoles can have one spindle each.
In the case of single-arm machines, the movement of the object occurs in three directions (along the X, Y, Z axes), caused by the movement of the desktop. The gantry milling machine allows you to move the table exclusively along the X-axis. Quite often, experienced designers use a device with a fixed table, which is fixed in the foundation, for processing very large workpieces. In such a machine, movement along the X axis is caused by a portal moving relative to the desktop and the ground.
Whether the table is movable or the gantry is on the machine, machining large workpieces requires a high load on the main spindle. Also, movements along the axes of the machine cause great efforts aimed at overcoming deformation and frictional forces during operation. Therefore, if you want to ensure high processing accuracy, be prepared to perform a number of tasks that increase the overall rigidity of the machine structure, reduce the friction force and wear of structural parts that cool the machine during operation, etc.; the specific list of required work depends on the model of the machine.
Each machine in the DARXTON catalog is distinguished by high-quality assembly and materials, which guarantees reliable operation and a long service life. The DARXTON online store offers to buy a gantry CNC machine at the best price on the Russian market. The company is engaged in the supply of exclusively high-quality machines and accessories. The company's specialists conduct an inspection of each machine before shipment to the buyer, the company bears all service obligations after the purchase of the goods.
A gantry CNC milling machine is a high-tech equipment designed to perform tasks such as drilling, relief and surface milling, engraving. To do this, you need to create a drawing in a special editor, load it into the control module of the machine, after which the machine itself will perform all the necessary actions. wood, metal, plastic, stone and some other materials can be processed.
Advantages of CNC machines
CNC gantry machines are able to quickly perform high-precision milling work, while they do not require the participation of a large amount of labor. One operator can service several machines at the same time. Its task, usually, is to fix (remove) the workpiece and start the control program.
The use of a CNC gantry milling machine in production can significantly reduce the time spent on the product manufacturing cycle, in comparison with the same process on conventional equipment, which requires the involvement of qualified personnel.
The purchase of a CNC milling machine is cheaper for the company than purchasing several conventional machines.
The speed of production and its quality will be higher. It will be possible to produce a wider range of products and save on the salaries of qualified personnel, which will make it possible to recoup the funds spent on equipment in a short time.
Varieties and scope
CNC gantry milling machines differ in functionality and scope. Some devices are designed to perform a wide variety of tasks. For example, gantry engraving and milling machines can produce products from various materials: from hard alloys to foam. It can be 2D or 3D processing, with varying degrees of precision and detail. At the same time, milling machines can only be processed.
Gantry CNC machines of industrial type
This is the most expensive and often bulky equipment, which is largely offset by its reliability and functionality. Operation in an industrial environment puts forward a number of requirements for CNC machines. Uninterrupted work on failure for a long time, under high load conditions, accuracy, the ability to process large parts. In addition, such devices are equipped with all possible equipment, such as vacuum tables, water cooling systems for the spindle and tool changers. Industrial CNC equipment control is implemented in the form of separate consoles, on which advanced software is usually installed.
CNC machines for small businesses
This is the next industrial type of gantry machines with numerical control, which does not always mean their lower functionality or performance relative to their older counterparts. They are made according to the same principles and often with the same components.
Differences can be primarily in the size and equipment. The package includes the most necessary, there can be no talk of any carousel systems for changing the cutting tool, unless, of course, the device was purchased for tasks requiring such a function. The operation of the device is often controlled by a computer via the LTP port or using adapters connected to a USB or LAN.
Medium CNC routers are popular in small businesses, among individual entrepreneurs and in private use. They are used for milling wood and MDF in carpentry or furniture production, the manufacture of monuments (stone engraving), advertising products, stamps. The purchase of large, expensive CNC units for such needs is not justified and will bring losses rather than profits.
Multi-axis CNC machines
For a CNC router, at least three axes are required: two for positioning on a plane and one for moving the spindle with the cutting tool in the vertical direction. This functionality allows the machine to process a part in the so-called 2.5D format. This implies a relief study of the plane, without milling the inner parts of the part.
On a gantry milling machine, the fourth axis is usually a lathe chuck attached to the worktable surface. The workpiece is clamped into it, and processing occurs by rotating the part and moving the spindle along it. This method is often used in the manufacture of balusters for stairs. However, it is erroneous to consider the lathe chuck as the fourth axis, because in most cases it is connected to a controller that previously controlled one of the plane axes (most often X). The rotation of the chuck simulates movement along this axis.
Milling of full-fledged 3D objects is possible if the CNC has 5 axes. Such devices are used to make models, decorative models, sculptures.
There are CNC milling cutters with several (2 or more) spindles. These solutions help speed up the production of the same parts.
Homemade equipment
The project and drawings for such devices are done independently. The design, as a rule, is tried to be done according to the simplest possible scheme. In the manufacture of using improvised means (for example, stepper motors from DVD players). Some of the nodes can be made to order, something can be bought online.
Design features
The portal design of CNC machines implies the presence of an u-shaped portal. Its movement along the work plane provides machining of the part along the Y axis. Along the X axis, the part is machined by moving the spindle along the portal beam.
CNC machines are composed of the following elements:
- Stanina. It is located under the portal, on it there is a working table, as well as guides along which the U-shaped structure moves.
- Portal. Moves over the bed. It contains the working units and mechanisms of the CNC machine tool;
- Stepper motors (servo motors). Mechanisms are set in motion, ensuring the movement of the processing tool along a given axis;
- Guides. Usually rail or tube type. Provide accurate rectilinear movement of the movable units of the machine in a given direction;
- Moving mechanisms. There are two types: a ball-screw pair or a rack-pinion set. The rotation of the stepper motors by means of these mechanisms is converted into the movement of the machine components.
- ... Provides rotation of the cutting tool.
- Control system. For full numerical control of the machine , a separate rack with specially developed software is required. Budget machines can be controlled from a regular PC.
| Name | Specifications |
|---|---|
| Dimensions of the processing zone Y and X, largest, mm | 4000 x 2000 |
| Spindle movement along the Z axis, mm | 200 |
| Type of transmission along the X, Y axes | Toothed rack, belt reducer 1k3 |
| Z-axis transmission type | ballscrew screws 20 with a pitch of 5 |
| Guide type | Profile rails H.S.A.C. GHR20 |
| Table surface | Aluminum table with T slots |
| Type of electric motors of movement | Stepper motor 450C 4A |
| Tool change system | Manual, nut fixing |
| Machine control system | DSP 0501 |
| Driver type | Leadshine 860 |
| Power supply type | NES-360-70 5A |
| Tool length gauge | There is |
| Sensors for determining the origin of machine zero points | Inductive sensor LJ12A3-4-Z / BX |
| Maximum working speed, m / min | 0 - 8 |
| Maximum idle speed, m / min | 0 - 15.0 |
| Working accelerations | Up to 600 mm / s2 |
| Spindle speed, rpm | 0 – 24 000 |
| Spindle power, kW | 4.5 |
| Collet type | ER20 |
| Tool shank diameter | Up to 13 mm |
| Bed type | Welded sheet metal 6mm, 8mm. |
| Drive power in all axes | 4A |
| Voltage, V | 220 |
| Current frequency, Hz | 50 |
| Energy consumption (kWh) | up to 6.0 kW |
| Weight, kg) | 900 |
| Overall dimension of the machine (mm) LxWxH | 4500x2800x1600mm |
| Guarantee | 12 months |
Basic complete set:
1 Machine.
2 Control unit.
3 Digital media with instructions.
4 Connecting cable.
5 Pump for cooling the spindle.
6 Spindle keys.
7 Link to download free 3D models - 2000 pcs.
8 Includes a 6 mm shank collet.
9 Set of clamps for fixing the workpiece
The options below can be installed on this machine. The price indicated in the options below is added to the base price of the machine.
| Option | Specifications | Price |
|---|---|---|
| 4th rotary axis, China (D100 mm) | 4th axis with tailstock for milling and engraving machines (China) | RUB 50,000 |
| 4th rotary axis, Russia (D200 mm) | 4th axis with a tailstock for milling and engraving machines (our production) | RUB 70,000 |
| Z axis-300mm | Increases Z-axis travel | RUB 32,000 |
| Spindle, Inverter 5500 W | Firm GDZ (China) | RUB 90,000 |
| Spindle, Inverter 4500 W | Firm HSD (Italy) | RUB 200,000 |
| Additional collets ER20 for milling cutters | Allows you to install cutters of different diameters, a set of 13 pieces, (3.175 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm , 13 mm) | RUB 10,000 |
| Set of cutters | This set includes cutters: 5 pcs. cutters for the manufacture of 3D products (R0.25, R0.5, R0.75, R1.0, R1.5), 4 pcs. cutters for cutting wood and roughing (D6 mm finger cutter) | RUB 10,000 |
| RichAuto DSP A18 | It is required to replace the control system with this one when installing a 4 rotary axis, since this control system supports 4 axes: Y, X, Z, A | RUB 25,000 |
| Oil mist coolant | High pressure lubricant is supplied to the cutter, this lubrication system is needed for those who are going to process non-ferrous metals, increases the accuracy and quality of the product at the output | RUB 30,000 |
| Rail lubrication system | When supplying lubricant to the carriages, the period until the moment of service increases. | RUB 20,000 |
| Vacuum cleaner for collecting shavings 1500 W. | RUB 40,000 | |
| Vacuum cleaner for collecting shavings 2200 W. | Dust collecting unit, the kit includes the vacuum cleaner itself, a 10 m hose, a brush on the spindle | RUB 55,000 |
| Vacuum table | The table surface is made of dense plastic and aluminum profiles for fixing the workpiece | 198,000 rubles. |
| Vacuum pump 3.0 kW | This table is useful for those who cannot press the workpiece to the table or screw it mechanically. Pump 3.0 kW. | RUB 50,000 |
| Vacuum pump 5.5 kW | This table is useful for those who cannot press the workpiece to the table or screw it mechanically. Pump 5.5 kW. | RUB 70,000 |
| Vacuum pump 7.5 kW | This table is useful for those who cannot press the workpiece to the table or screw it mechanically. Pump 7.5 kW. | RUB 86,000 |
| Vacuum pump 11.0 kW | This table is useful for those who cannot press the workpiece to the table or screw it mechanically. Pump 11.0 kW. | RUB 150,000 |
| Servos | DELTA 750/400 W | RUB 90,000 |
| Second spindle | Installation of the second Z-axis and 3.0 kW spindle | RUB 94,000 |
| Reducer on X, Y | Equipping the machine with planetary gearboxes X Y | RUB 62,000 |
There are a lot of similar stories on the net, and I probably won't surprise anyone, but maybe this article will be useful to someone. This story began at the end of 2016, when my friend, a partner in the development and production of test equipment, accumulated a certain amount of money. In order not to just skip the money (this is a young thing), we decided to invest it in the business, after which the idea of making a CNC machine came to mind. I already had experience in building and working with this kind of equipment, and the main area of our activity is design and metalworking, which accompanied the idea with the construction of a CNC machine.
It was then that the movement began, which continues to this day ...
Everything continued with the study of forums dedicated to CNC topics and the choice of the basic concept of the machine tool design. Having previously decided on the materials to be processed on the future machine and its working field, the first paper sketches appeared, which were later transferred to the computer. In the environment of three-dimensional modeling KOMPAS 3D, the machine was visualized and began to grow overgrown with smaller details and nuances, which turned out to be more than we would like, some are being solved to this day.
One of the initial decisions was to define the materials to be processed on the machine and the size of the working area of the machine. As for the materials, the solution was quite simple - wood, plastic, composite materials and non-ferrous metals (mainly duralumin). Since our production is mainly metal-working machines, sometimes a machine is required that would process quickly along a curved trajectory fairly easy-to-process materials, and this would subsequently reduce the cost of manufacturing the ordered parts. Based on the selected materials, mainly supplied in sheet packaging, with standard dimensions of 2.44x1.22 meters (GOST 30427-96 for plywood). Having rounded these dimensions, we came to the following values: 2.5x1.5 meters, the working space is definitely, with the exception of the tool lifting height, this value was chosen for reasons of the possibility of installing a vice and we assumed that we would not have workpieces thicker than 200mm. We also took into account that moment, if it is necessary to process the end face of any sheet metal with a length of more than 200 mm, for this the tool goes beyond the dimensions of the machine base, and the part / workpiece itself is attached to the end side of the base, thereby processing the end face of the part.
Machine design It is a prefabricated frame base made of an 80th shaped tube with a wall of 4mm. On both sides of the base length, profile rolling guides of the 25th standard size are fixed, on which a portal is installed, made in the form of three profile pipes welded together of the same size as the base.
The machine is four-axis and each axis is driven by a ball screw. Two axes are located parallel to the long side of the machine, programmatically paired and referenced to the X coordinate. Accordingly, the remaining two axes are Y and Z coordinates.
Why did they stop at the prefabricated frame: initially they wanted to make a purely welded structure with embedded welded sheets for milling, installation of guides and ball screw supports, but they did not find a sufficiently large coordinate milling machine for milling. I had to draw a prefabricated frame in order to be able to process all the parts on our own using the metal-working machines available in production. Every part that has been exposed to electric arc welding has been annealed to relieve internal stress. Further, all the mating surfaces were milled, and after fitting, they had to be scraped in places.
Climbing forward, I want to say right away that the assembly and manufacture of the frame turned out to be the most time-consuming and financially costly event in the construction of the machine. The original idea with an all-welded frame bypasses the prefabricated structure in all respects, in our opinion. Although many may disagree with me.
I want to make a reservation right away that we will not consider machines from an aluminum structural profile here, this is more a matter of another article.
Continuing the assembly of the machine and discussing it on the forums, many began to advise making diagonal steel jibs inside and outside the frame to add even more rigidity. We did not neglect this advice, but we also added jibs to the structure, since the frame turned out to be quite massive (about 400 kg). And upon completion of the project, the perimeter will be covered with sheet steel, which will additionally tie the structure.
Let's now move on to the mechanical issue of this project. As mentioned earlier, the movement of the machine axes was carried out through a ball-screw pair with a diameter of 25 mm and a pitch of 10 mm, the rotation of which is transmitted from stepper motors with 86 and 57 flanges. Initially, it was supposed to rotate the propeller itself in order to get rid of unnecessary backlash and additional gears, but it was not without them in view of the fact that with a direct connection of the engine and propeller, the latter would start to unwind at high speeds, especially when the portal is in extreme positions. Considering the fact that the length of the screws along the X axis was almost three meters, and for less sagging, a screw with a diameter of 25 mm was laid, otherwise a 16 mm screw would be enough.
This nuance was revealed already during the production of parts, and it was necessary to quickly solve this problem by making a rotating nut, and not a screw, which added an additional bearing assembly and a belt drive to the design. This solution also made it possible to tighten the screw well between the supports.
The rotating nut design is quite simple. Initially, two tapered ball bearings were selected, which are mirrored onto the ball screw nut, having previously cut the thread from its end, to fix the bearing race on the nut. The bearings, together with the nut, were inserted into the housing, in turn, the entire structure is attached to the end of the portal post. At the front of the ball screws, the nuts were fixed on the screws with a transition sleeve, which was subsequently turned on a mandrel when assembled to make it taper. A pulley was put on it and tightened with two locknuts.
Obviously, some of you will ask the question - "Why not use a rack as a transmission mechanism?" The answer is quite simple: the ball screw will provide positioning accuracy, greater driving force, and, accordingly, less torque on the motor shaft (this is what I remembered right off the bat). But there are also disadvantages - a lower speed of movement, and if we take screws of normal quality, then, accordingly, the price.
By the way, we took ball screws and nuts made by TBI, a fairly budgetary option, but the quality is appropriate, since we had to throw out 3 meters of the taken 9 meters of the screw, due to the discrepancy in geometric dimensions, none of the nuts just screwed on ...
As sliding guides, profile guides of 25mm rail standard size, manufactured by HIWIN, were used. For their installation, mounting grooves were milled to maintain parallelism between the guides.
They decided to make the ball screw supports on our own, they turned out to be of two types: supports for rotating screws (Y and Z axes) and supports for non-rotating screws (X axis). Supports for rotating screws could be bought, since the savings due to our own production of 4 parts came out little. Another thing is with supports for non-rotating screws - such supports cannot be found on sale.
From what was said earlier, the X-axis is driven by rotating nuts and via a belt gear drive. It was also decided to make two other axes Y and Z through the belt gear, this will add more mobility in changing the transmitted moment, add aesthetics in view of installing the engine not along the axis of the ball screw, but on the side of it, without increasing the dimensions of the machine.
Now let's move smoothly to electrical part, and we will start with drives, stepper motors were chosen as them, of course, for reasons of lower cost compared to motors with feedback. Two motors with an 86th flange were installed on the X axis, on the Y and Z axes for an engine with a 56th flange, only with different maximum torque. Below I will try to present a complete list of purchased parts ...
The electrical circuit of the machine is quite simple, the stepper motors are connected to the drivers, which in turn are connected to the interface board, which also connects through the parallel LPT port to a personal computer. I used 4 drivers, respectively, one for each of the engines. All drivers were supplied the same, to simplify installation and connection, with a maximum current of 4A and a voltage of 50V. As an interface board for CNC machines, I used a relatively budgetary option from a domestic manufacturer, as indicated on the website the best option. But I will not confirm or deny this, the board is simple to use and, most importantly, it works. In my past projects, I used boards from Chinese manufacturers, they also work, and on their periphery differ little from the one I used in this project. I noticed in all these boards, one may not be significant, but a minus, you can only install up to 3 limit switches on them, but at least two such switches are required for each axis. Or did I just not figure it out? If we have a 3-axis machine, then, accordingly, we need to set the limit switches in the zero coordinates of the machine (this is also called the "home position") and in the most extreme coordinates so that in the event of a failure or lack of a working field, this or that axis simply does not out of order (just not broken). In my scheme I used: 3 end non-contact inductive sensors and an emergency button "E-STOP" in the form of a mushroom. The power section is powered by two 48V switching power supplies. and 8A. 2.2kW water-cooled spindle, respectively connected through a frequency converter. The revolutions are set from a personal computer, since the frequency converter is connected via an interface board. The revolutions are regulated by changing the voltage (0-10 volts) at the corresponding output of the frequency converter.
All electrical components except motors, spindle and limit switches were installed in an electrical metal cabinet. All control of the machine is carried out from a personal computer, we found an old PC on an ATX form factor motherboard. It would be better if they shrank a little and bought a small mini-ITX with an integrated processor and video card. With the small size of the electric box, all the components could hardly fit inside, they had to be placed close enough to each other. At the bottom of the box, I placed three forced cooling fans, since the air in the inside of the box was very hot. From the front, a metal cover was screwed on, with holes for the power buttons and emergency stop buttons. Also on this pad was placed a socket for turning on the PC, I removed it from the case of the old mini-computer, it is a pity that it was not working. A cover plate was also fixed at the rear end of the box, holes were placed in it for connectors for connecting a 220V power supply, stepper motors, a spindle and a VGA connector.
All wires from the motors, the spindle, as well as the water hoses for its cooling, were laid in the flexible cable with caterpillar-type channels 50 mm wide.
As for the software, Windows XP was installed on a PC located in an electrical box, and one of the most common programs Mach3 was used to control the machine. The program is configured in accordance with the documentation for the interface board, everything is described there quite clearly and in pictures. Why exactly Mach3, and all the same, I had experience of work, I heard about other programs, but did not consider them.
Specifications:
Working space, mm: 2700x1670x200;
Axis movement speed, mm / min: 3000;
Spindle power, kW: 2.2;
Dimensions, mm: 2800x2070x1570;
Weight, kg: 1430.
Parts List:
Profile pipe 80x80 mm.
Metal strip 10x80mm.
Ball screws TBI 2510, 9 meters.
Ball screw nuts TBI 2510, 4 pcs.
Profile guides HIWIN carriage HGH25-CA, 12 pcs.
HGH25 rail, 10 meters.
Stepper motors:
NEMA34-8801: 3 pcs.
NEMA 23_2430: 1pc.
Pulley BLA-25-5M-15-A-N14: 4 pcs.
Pulley BLA-40-T5-20-A-N 19: 2 pcs.
Pulley BLA-30-T5-20-A-N14: 2 pcs.
Interface board StepMaster v2.5: 1 pc.
Stepper motor driver DM542: 4pcs. (China)
Switching power supply 48V, 8A: 2 pcs. (China)
Frequency converter for 2.2 kW. (China)
Spindle 2.2 kW. (China)
I kind of listed the main details and components, if I didn't include something, then write in the comments, I'll add.
Experience on the machine: In the end, after almost a year and a half, we still launched the machine. First, we adjusted the positioning accuracy of the axes and their maximum speed. According to more experienced colleagues, the maximum speed of 3 m / min is not high and should be three times higher (for processing wood, plywood, etc.). At the speed that we have reached, the portal and other axes resting on them with hands (with the whole body) can hardly be stopped - rushing like a tank. The tests began with the processing of plywood, the cutter goes like clockwork, there is no vibration from the machine, but they also deepened by a maximum of 10 mm in one pass. Although after they began to deepen to a shallower depth.
After playing with wood and plastic, we decided to gnaw the duralumin, here I was delighted, although at first I broke several cutters with a diameter of 2 mm while I was choosing the cutting modes. Dural cuts very confidently, and a fairly clean cut is obtained, along the processed edge.
Steel has not yet been processed, but I think that at least the machine will pull the engraving, and for milling the spindle is weak, it's a pity to kill it.
And the rest of the machine does an excellent job with the tasks assigned to it.
Conclusion, opinion on the work done: The work was not small, we ended up pretty tired, since no one canceled the main work. Yes, and a lot of money has been invested, I will not say the exact amount, but it is about 400t.r. In addition to the cost of assembly, the bulk of the costs and most of the effort went into making the base. Wow, how we got tired of it. Otherwise, everything was done as funds became available, time and finished parts to continue assembly.
The machine turned out to be quite efficient, quite tough, massive and of high quality. Maintaining good positioning accuracy. When measuring a square of duralumin, dimensions 40x40, the accuracy turned out to be + - 0.05mm. The machining accuracy of larger parts was not measured.
What's next…: There is still enough work on the machine, in the form of dust closure by protecting the guides and ball screws, lining the machine around the perimeter and installing ceilings in the middle of the base, which will form 4 large shelves, for the cooling volume of the spindle, storage of tools and equipment. They wanted to equip one of the quarters of the base with a fourth axle. It is also required to install a cyclone on the spindle to remove and collect dust chips, especially if you process wood or textolite, dust flies from them everywhere and settles everywhere.
As for the future fate of the machine, everything is not unambiguous, since I had a territorial issue (I moved to another city), and now there is almost no one to deal with the machine. And the above plans are not the fact that they will come true. No one could have imagined this two years ago.
In the case of the sale of a machine with its price tag, everything is not clear. Since it is frankly a pity to sell at cost price, and an adequate price has not yet come to mind.
On this I will probably end my story. If I have not covered something, then write to me, and I will try to supplement the text. For the rest, a lot is shown in the video about the manufacture of the machine on my YouTube channel.
Often there is a need for milling large-sized workpieces (for example, body parts of machines and assemblies). Such workpieces, in addition to large sizes, also have a large mass, which makes their processing difficult. For such work, gantry milling machining centers are best suited. Gantry milling machining centers are available in versions with a movable table and with movable columns. The use of the design of the machine with movable columns allows processing of larger-sized workpieces with a smaller size of the machining center.
Gantry milling machining centers with movable columns are used for processing long and large workpieces. The traditional layout of such machines includes a stationary table and a longitudinally movable portal carrying a traverse with a transversely vertically movable spindle head. Thus, tool movements along the X axis are carried out due to the movement of the portal along the working table, tool movements along the Y axis are carried out due to the movement of the traverse with the spindle along the portal in the horizontal plane, tool movements along the Z axis are carried out due to the movement of the spindle along its vertical axis.
The following types of work are performed on portal milling machining centers: milling, boring, countersinking, drilling, cutting internal and external threads, trimming ends. To carry out all these types of work without changing the machine, it is usually equipped with a large belt-type tool magazine. Tool change is usually performed with a rotating crosshead, which reduces tool change time and, ultimately, shortens the machining cycle.
The DEG Group of Companies supplies high-precision portal milling machining centers from DMC (Korea) to the Russian and CIS markets, carries out commissioning and post-warranty service of the equipment.
The complete range of milling machines can be found in the corresponding section.
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