In a private house      06/14/2019

Vacuum table as an option for a CNC milling machine. We make a large table for vacuum forming Vacuum table for the machine

vacuum table allows you to significantly simplify and speed up installation on the table milling machine CNC sheet materials. It can be both MDF sheets and acrylic ... Moreover, if the sheet is curved, then the vacuum fastening allows it to be leveled for the duration of work.
If MDF is regularly processed on the machine, then the machine is probably equipped with a powerful hood (a vacuum cleaner for collecting chips and wood dust - see photo below). Such a hood with a power of 2.2 kW is able not only to remove sawdust from the cutting zone, but also to ensure the operation of the vacuum table.

ATTENTION! Safety of work is guaranteed only under certain conditions: the size of the cutters must not exceed the allowable workpiece clamping force, the cutting mode is only tested with the existing vacuum table. Otherwise, it is possible to tear off the workpiece during processing, which is fraught with injuries with severity up to a fatal outcome.

The vacuum table is made of two layers of MDF 20mm thick. Upper layer- front - is needed for suction of sheets of the processed material. The channels on it are divided into six zones (see photo below), which, if necessary, can be muffled one at a time, depending on the size and configuration of the workpiece being processed. The cross section of the channels is chosen so that, if necessary, each zone can be sealed along the contour using a D-shaped household rubber sealing tape (tape for sealing windows and doors). The tape is equipped with a self-adhesive layer and is well fixed in the channels. The depth of the channels is chosen so that the workpiece, when the vacuum table is turned on, lies on the surface of the table, pressing down on the sealing tape.

The lower layer of the vacuum table serves to supply vacuum separately to each zone of the upper layer of the table.
In the channels of the upper layer, vertical holes are made for bypassing the rarefaction from the channels of the lower layer to the channels of the upper layer. There are 4 such holes. for each zone. However, the more of them, the better.

The easiest way to connect a vacuum table to a vacuum cleaner is with a ubiquitous pipeline, such as a sewer (see photo below). It is both cheaper and technologically advanced. The photo shows that a pipe was used to supply vacuum to the machine sewer diameter 110 mm. Vacuum is supplied directly to the machine by six corrugated hoses with a diameter of 50 mm. Each corrugated hose is attached to the vacuum table by means of a fitting screwed into the table.
All connections are hermetically sealed with either standard seals or clamps (preferably with a sealant).

Before assembling the table, all its channels should be treated with PVA glue or a primer to ensure that the MDF is impermeable to air (MDF does have good air permeability).
The top layer of the vacuum table is screwed to the bottom with self-tapping screws. So that the caps of the self-tapping screws do not interfere with the work with the table, holes are made in its surface into which the caps are recessed.
After assembling the table, its surface should be machined with a milling cutter to ensure that the surface is flat.

Summary

As can be seen from the photo, a 2200 W vacuum cleaner is used in this design. Such a vacuum cleaner has a tee at the inlet for connecting three air ducts with a diameter of 100 mm. In the process of all work, one hole of the tee was occupied by a vacuum table, the second - by an exhaust system with a hole at the inlet of 50 mm. The third hole was half open to prevent overheating of the vacuum cleaner due to low air flow, because the vacuum table does not provide air consumption at all, the hood has an inlet of only 50 mm, i.e. the cross section of the inlet would be only 50 mm instead of 3 holes with a diameter of 100 mm. With this connection, the power of the vacuum cleaner turned out to be sufficient for the operation of the vacuum table and the system for suction of chips from the cutting zone.
The clamping force of the workpiece on the table depends strongly on the clamping area. A workpiece made of MDF with a size of 600x900 mm can be processed with a milling cutter with a diameter of 6 mm with a full diameter to a depth of 6 mm in one pass at a feed rate of 2000 mm/min. In this mode, such a vacuum table is able to hold the workpiece.
For greater reliability, it is recommended to use stops along the edges of the workpiece so that the workpiece cannot be moved during processing. Such a solution will be useful, for example, in case of failure of the vacuum table during operation or in case of unauthorized excess of the cutting force. At the same time, the complexity of installing the workpiece on the machine table will not change, and possibly decrease (the stops will allow you to put the workpiece in the same place).
In addition, it should be borne in mind that the workpiece on the vacuum table can easily be torn off by vertical force. When planning processing, this should be taken into account and cutters that create lifting force during operation should not be used.

From time to time, every technologist is faced with a situation where fixing workpieces for machining is not an easy task. There are types of parts, the fastening of which on the machine each time requires considerable ingenuity:

  • body parts with thin walls, (fixing in a vice leads to warpage);
  • workpieces processed along the contour (mechanical clamps close the processing zone);
  • thin-sheet blanks (lack of uniform fixing of the contact surface);
  • soft or brittle materials that break easily under load (wood, plastic, glass, etc.)
  • large-sized parts of complex shape that require a long fixing process using sets of mechanical clamps (for example, aircraft panels);
  • workpieces, the processing of which is expedient in one setup without readjustment;
  • fixing sheet non-magnetic materials;
  • fixing ultra-thin materials (foil) used in the manufacture and assembly printed circuit boards and radio electronic components.

To solve these problems, each enterprise has its own sets of equipment, special processing techniques are developed, and a special tool is often used. However, in the world there are two technologies for fixing such parts, which greatly facilitate the work of technologists. This fastening is due magnetic field and with vacuum. Magnetic tables are widely used and the principle of their operation is clear. The technology of vacuum clamping of workpieces is currently just beginning to be mastered at Russian enterprises, often solving complex tasks that were difficult or impossible to perform with other methods of clamping. One of the main advantages of vacuum clamping is the uniform distribution of the clamping force over the entire area of ​​the workpiece, which avoids vibrations during machining.

The principle of operation of vacuum tables is based on creating a vacuum between the workpiece and the support surface of the device. At the same time, a pressing force equal to atmospheric pressure acts on the entire part, which under normal conditions is equal to 760 mm Hg. Art., and is about 1 kgf / cm2. That is, a clamping force equal to 600 kgf will act on a plate measuring 20x30 cm! And this force will increase in proportion to the area of ​​fixing.

Vacuum is produced by vacuum pumps of various capacities, depending on the type and size of the table. Modular devices allow you to work in conditions of coolant supply to the processing zone.

As an example of the minimum set of all necessary components for the full operation of the vacuum system on the machine, we can cite the "starter kit". This kit includes a vacuum pump, a lattice modular table measuring 200x300x32.5 mm, an adapter (adapter-board) for VAC-MAT mats, VAC-MAT mats (10 pcs.), All necessary elements table fasteners and vacuum leads.

This vacuum system allows you to fix and process any flat workpiece, the contact surface of which does not exceed the area of ​​the vacuum table. Thanks to a special adapter, it is possible to carry out through processing of workpieces from one installation.

Latticed vacuum tables.

The most common type of vacuum tables. A seal is placed in the grooves of the grid along the perimeter of the workpiece to be processed, forming a closed loop. Then the workpiece is installed and based on eccentric stops. When a vacuum is applied, the workpiece is pressed tightly against the surface of the table.

Tables are made in various designs. Modular tables can be connected to each other, forming a large fixing area. Circular tables are designed for fixing rings and round blanks. Vacuum hose connection is possible both from the end of the table (usual execution on milling and grinding machines), and in the center (fixing on turntables machining centers and in lathe chucks). There are a number of standard table sizes from aluminum alloy or steel (version for magnetic tables of machine tools), but often the size of the vacuum table is determined by the dimensions of the machine table.


Vacuum tables VAC-MAT.

Tables for work with rigid polymer mats VAC-MAT. The arrangement of the mats makes it possible to pump out air from the volume of a plurality of chambers formed between the workpiece and the polymer mat. As a result, through-processing of workpieces becomes possible (making holes, windows or bypassing the workpiece contour from one setup).

All mats have standard size 300x200x2.5 mm, but differ in rigidity, which ultimately affects the accuracy of the workpiece. Mats are consumable and replaced when damaged. cutting tool. As a rule, one mat is used for through machining of parts of the same type. When switching to another type of parts, the mat is replaced. Tables VAC-MAT can be made in various designs, including, as in the case of lattice tables - modular. There are also adapter boards that can be installed on grid tables to work with VAC-MAT mats.

Vacuum groove tables

This type of vacuum tables is intended for fixing workpieces with a small contact area (small products, workpieces with a large number of holes and windows). The use of flat mats with a high coefficient of friction makes it possible to create additional force from shifting the workpiece relative to the fixing plane.

A flat mat is laid on the slab, in which holes are knocked out located under the supporting surface of the workpiece, as shown in the figures. When fixing, the workpiece is pressed tightly against the mat. On these tables, as well as on the VAC-MAT tables, workpieces can be through-cut. After perforation, the mat will be a template for fixing and processing the same type of parts.

Vacuum tables FLIP-POD

FLIP-POD vacuum tables have been designed to hold large workpieces. Clamping with the help of this system allows processing the end surfaces of workpieces due to vacuum suction cups (FP elements).

Each FP vacuum element works as an independent valve. When the element is turned upside down, it is included in the vacuum channel (working position), in the suction down position, the FP element takes its place inside the table and turns off the vacuum supply. Height-adjustable FP elements allow you to expand the range of clamped workpieces.

The dimensions of the boards and the location of the FP elements are selected based on the data on the machine table and the task performed on it. Exist different kinds additional elements for basing blanks. The vacuum table can be attached to the machine table using side clamps or directly through special mounting holes.

Vacuum tables made of porous materials Designed for dry machining of thin sheet materials up to foil. The homogeneous porous structure of the working surface of vacuum tables forms an area within which it is possible to set the stops and fix the workpiece without additional operations to change the table to a given shape of the part. The workpiece can be of any configuration. The pressing force in this case will depend on the total area of ​​the contact surface of the workpiece and the board, as well as on the quality of processing base surface blanks.

Porous blocks of tables are made of various materials, different in structure and properties (compressed materials with a homogeneous porous structure and sintered metals: bronze, steel, aluminum). The selection of material is carried out by specialists based on the data on the workpieces being processed. It is possible to perform vacuum boards with a tolerance of the working surface along the plane of 5 microns. Boards can be made according to a given size or in the form of combined modules. Porous materials can be supplied separately in blocks maximum size 500x500x400 mm. If necessary, obtain bigger size blocks can be glued into sheets. After gluing, the sheets are subjected to secondary machining to obtain the required surface accuracy.

This type of boards has proven itself in high-precision engraving. thin plates and fixing the foil in the production and assembly of printed circuit boards, solar panels and radio electronic components. The foil is securely fixed, straightening out on the working surface of the board with a plane tolerance of up to 2 microns.

Accessories for vacuum systems

The selection of a vacuum system consists in the selection or design of a clamping device (board) of the types described above, in accordance with the terms of reference; the right choice vacuum pump or modular device and other elements that provide a reliable supply low pressure from the pump to the board.

PTC VECTOR LLC is the official representative of the world's leading manufacturer of such vacuum fixing systems, HORST WITTE GERÄTEBAU (Germany). Our specialists have significant experience accumulated during the implementation of these systems at Russian enterprises. We are ready to answer any questions and provide qualified assistance in solving complex technological issues.

COLD FIXING TECHNOLOGY

Cold clamping technology is an innovative approach to solving complex problems of clamping blanks without mechanical impact:

  • fragile blanks (ceramics, plastic, glass, polymeric materials, etc.);
  • small blanks from any materials;
  • cellular materials made of aluminum and fiberglass used in the aircraft industry.

Fastening is carried out on the freezing board, on work surface which is pre-sprayed with a thin layer of water or a special gel is applied. During the fixing process, the water layer freezes and a thin ice film is formed, which firmly holds the workpiece on the working surface of the board. In this case, the workpiece does not experience mechanical stress and is not deformed. To remove the workpiece, it is enough to switch the device to the mode of heating the working surface.

This technology successfully used in machining on milling, turning and engraving equipment. For all devices, there is one limitation - when using, coolant supply to the processing zone is prohibited. company HORST WITTE Two types of cold fixing systems have been developed:

AFP (Air Freeze Platte) systems

Cooling of the working surface of the board occurs due to the thermodynamic process occurring inside the board when a pressure of 6 atm is applied. It does not require additional cooling stations. The system consists of a freezing device and a polymer tube. The size of the working field of the device is from 100x140 mm to 140x150 mm. Temperature range in cooling/heating modes -10/+10˚С. For the convenience of changing workpieces, there may be several cooling plates in a set of one device. They are easily replaced on the fixture.

ICE-VICE systems

Cooling of the working surface of the board occurs due to the antifreeze circulating between the board and the cooling unit. For one system with a cooling unit, it is possible to use 1-2 freezing boards with a working field from 125x150 mm to 500x500 mm. Temperature range in cooling/heating modes -35/+35˚С. The automation of the cooling device controls and maintains the set temperature conditions.

A description of cold fixing systems can be seen on the pages of the Vacuum Fixing Technology catalog.

Systematic Automation has been manufacturing vacuum tables for over 30 years.

Practically perfect surface(tolerance no worse than ± 25µm / sq.ft) - the result of a unique manufacturing technology and the use of high quality equipment. Annually

Systematic Automation manufactures thousands of vacuum tables every year for a variety of unique applications: assembly, CNC, moulding, cutting, digital printers, photography, engraving, textile work, inkjet printers, research equipment, laboratory equipment, laminating, laser engraving and cutting, plotters, sail making, screen printing, ultrasonic cutting machines, presses, carpet cleaning.

Design of vacuum tables

The top of the table is made of durable 3mm aluminum alloy. Usage epoxy resin in design, provides good protection from dents and bends.

The basis of the vacuum table has a "honeycomb" structure and is made of a material that reduces the effect of temperature differences on the uneven surface of the table. The honeycomb design ensures uniform airflow across the entire surface of the table.

The 25x25mm "collector" is located around the honeycomb base, due to which the best possible distribution of vacuum between all the holes in the table is achieved.

Hole size

In the standard version, the holes in the table have a diameter of 1.6mm, and are located in 12.5mm increments, which is optimal for most jobs.

Materials such as 127µm thick polycarbonate or vinyl will not deform against 1.58mm holes with the full force of a standard vacuum pump (see specification).

Optionally, holes can be custom-sized (min. 0.79mm). 0.79 mm holes are countersunk on the underside for minimum losses air streams.

Fastening

All tables have a 9.5mm flange around the perimeter for fastening. If the fitting for connecting the vacuum pump is not located below, but on the side, then the flange on this side will be absent. If necessary, holes for fastening will be drilled in the flange, in accordance with the customer's drawing.

Standard Options Options FAQ Video

External dimensions of standard vacuum tables. Vacuum holes are located 25mm from the edge.

  • 127x152x30mm. (5″ x 6″ x 1 3/16″)
  • 203x203x30mm. (8″ x 8″ x 1 3/16″)
  • 304x203x30mm. (12″ x 8″ x 1 3/16″)
  • 304x304x30mm. (12″ x 12″ x 1 3/16″)
  • 304x406x30mm. (12″ x 16″ x 1 3/16″)
  • 304x609x30mm. (12″ x 24″ x 1 3/16″)
  • 304x762x30mm. (12″ x 30″ x 1 3/16″)
  • 355x355x30mm. (14″ x 14″ x 1 3/16″)
  • 406x279x30mm. (16″ x 11″ x 1 3/16″)
  • 457x279x30mm. (18″ x 11″ x 1 3/16″)
  • 508x406x30mm. (20″ x 16″ x 1 3/16″)
  • 508x431x30mm. (20″ x 17″ x 1 3/16″)
  • 508x457x30mm. (20″ x 18″ x 1 3/16″)
  • 508x508x30mm. (20″ x 20″ x 1 3/16″)
  • 558x558x30mm. (22″ x 22″ x 1 3/16″)
  • 609x457x30mm. (24″ x 18″ x 1 3/16″)
  • 609x558x30mm. (24″ x 22″ x 1 3/16″)
  • 609x711x30mm. (24″ x 28″ x 1 3/16″)
  • 660x355x30mm. (26″ x 14″ x 1 3/16″)
  • 660x482x30mm. (26″ x 19″ x 1 3/16″)
  • 660x508x30mm. (26″ x 20″ x 1 3/16″)
  • 660x762x30mm. (26″ x 30″ x 1 3/16″)
  • 660x863x30mm. (26″ x 34″ x 1 3/16″)
  • 685x1016x30mm. (27″ x 40″ x 1 3/16″)
  • 711x812x30mm. (28″ x 32″ x 1 3/16″)
  • 762x508x30mm. (30″ x 20″ x 1 3/16″)
  • 762x863x30mm. (30″ x 34″ x 1 3/16″)
  • 762x1016x30mm. (30″ x 40″ x 1 3/16″)
  • 914x914x30mm. (36″ x 36″ x 1 3/16″)
  • 1219x1219x30mm. (48″ x 48″ x 1 3/16″)
  • 1219x2438x38mm. (48″ x 96″ x 1.50″)
  • 1828x3657x38mm. (72″ x 144″ x 1.50″)
  • Custom size tables available. Specify.
  • vacuum pump
  • vacuum valve
  • Vacuum table air supply valve
  • Pressure regulator.
  • Pedal
  • Stops for positioning products on a vacuum table.
  • Retractable vacuum tables
  • Plastic (Formica) tabletop
  • Independent vacuum zones controlled by valves.
  • Anodized table surface
  • Location of vacuum holes according to customer's drawing
  • Table shape and size according to customer requirements

Q: How can I fix the vacuum table?
A: The table has a 9.5mm bottom and top flange around the perimeter. You can use them for clips or drill holes for mounting.

Q: Is it possible to use threaded connection for a vacuum line?
Oh yeah. Specify the required size.

Q: I already have a vacuum pump. Will it work with your vacuum table?
A: Most likely it will work. In any case, you can order the pump later. If you decide to use your pump, you can immediately order an adapter / adapter. Please specify dimensions when ordering.

Q: I work with materials that can get scratched. Can they be avoided when working on a vacuum table?
A: Yes, you can use the switch valve to blow air out of the table. This will result in an effect air cushion. Optionally, you can adjust the amount of air supplied. The valve requires compressed air at a pressure of min. 4.2 bar.

Q: How much Smooth surface vacuum table?
A: Tolerance no worse than ±25µm/sqft

Q: How should I secure the table to prevent it from bending?
A: As a rule, the bottom (surface) of the table is flat and parallel to the top, so it is possible to mount the table on the machine base.
When setting the table on a surface, pay attention to the absence of gaps, which indicate an uneven surface. Use shims to eliminate table "wobble" due to gaps. Check parallelism. If necessary, use additional spacers to eliminate the possibility of table deflection under pressure and violation of the plane of the working surface of the vacuum table.

Q: Is there a way to place items on the table in exactly the same place?
A: Yes, it is possible. Optionally, you can order a system of stops for positioning products. As a rule, these are three steel pins that are “pulled out” from the table during the laying of the product and “recessed” into the table as soon as the vacuum is turned on. It is possible to accommodate more than three pins.


Find out the price!

The manufacturer reserves the right to make changes to the design and specifications of the stencil equipment without notice.

Company SOMMTEC developed a line of perforated vacuum tables. A feature of these tables are holes located at a distance of 10 mm over the entire area of ​​the plate, which allows us to carry out processing at any point of the vacuum table. The open area of ​​the slab must be covered with a continuous polymer mat to avoid loss of vacuum.

Perforated vacuum tables are manufactured in various designs. Modular tables allow you to form a large fixing area.

The main advantage of perforated vacuum tables is the ability to clamp workpieces of complex shape without additional reconfiguration.

SOMMTEC presents to your attention five series of perforated tables. Tables are used in the processing of metals, wood products, plastics, glass, films, foils, engraving works.

All tables are made of high quality aluminium, vacuum platen design provides high performance as well as excellent geometric stability in long-term use, can work in a humid environment when machining with a coolant supply. The tables are not bendable and do not have internal tension, thanks to the developed system of channels, it is possible to limit the working surface of the table. All perforated tables are equipped with perforated mats, which allows for through processing, as well as processing parts with existing technological windows and holes.

MP Series Vacuum Tables

Table features:

  • The table has mounting holes M8 with a pitch of 100 mm, it is possible to manufacture according to the customer's parameters;
  • Hole diameter 0.3 mm
  • It is possible to install additional mechanical stops;
  • The table is equipped with eccentric stops for positioning the workpiece.

Pos. Art. no. Name Dimensions, mm Weight, kg
1 15214112 216x136x26 4
2 15324112 Perforated vacuum table, grid 10 mm 316x216x26 9
3 15334112 Perforated vacuum table, grid 10 mm 316x316x26 10
4 15434112 Perforated vacuum table, grid 10 mm 416x316x26 12
5 15524112 Perforated vacuum table, grid 10 mm 516x216x26 13
6 15544112 Perforated vacuum table, grid 10 mm 516x416x26 18
7 15644112 Perforated vacuum table, grid 10 mm 616x416x26 20
8 15654112 Perforated vacuum table, grid 10 mm 616x516x26 27
9 15754112 Perforated vacuum table, grid 10 mm 716x516x26 30
10 15154112 Perforated vacuum table, grid 10 mm 1016x516x26 50
11 15164112 Perforated vacuum table, grid 10 mm 1016x616x26 55

Special sizes also available on request!

The package includes:

  • vacuum table;
  • Perforated polymer mat;
  • Solid polymer mat;
  • Hose Ø12/18 mm 1 m;
  • Stops;
  • Description.

Perforated vacuum tables UPT series

The UPT series has been specially developed for processing thin materials such as foil, film, paper, plywood. The hole diameter is 0.6 mm, which allows you to evenly fix flexible materials.


Pos. Art. No. Name Dimensions, mm Weight, kg
1 15214.1112 Perforated vacuum table, grid 10 mm 220x160x24 5
2 15324.1112 Perforated vacuum table, grid 10 mm 310x220x24 9
3 15224.1112 Perforated vacuum table, grid 10 mm 222x262x24 7
4 15424.1112 Perforated vacuum table, grid 10 mm 400x200x24 10
5 15434.1112 Perforated vacuum table, grid 10 mm 430x310x24 15
6 15644.1112 Perforated vacuum table, grid 10 mm 610x430x24 21
7 15644.1112-2 Perforated vacuum table, grid 10 mm 600x400x24 20
8 15864.1112 Perforated vacuum table, grid 10 mm 850x610x24 48
9 15184.1112 Perforated vacuum table, grid 10 mm 1200x850x24 90

Vacuum workpiece clamping: pumps or blowers?


Currently, in various industries of processing metal, wood or plastic products, instead of mechanical devices, the so-called "vacuum clamp" is used to hold the workpiece on the desktop. With this method of holding, a force is used that presses on the workpiece, pressing it against the table, from which air is pumped out and a vacuum is created. This force, pressing the workpiece, appears immediately after the start of pumping air out of the table and disappears when the air enters there again.


The clamping force can be estimated in the usual values ​​​​and calculate what it can be. Since it is a consequence of the vacuum created in the table on which the workpiece is located, or rather the difference in air pressure inside and outside the table, its maximum value is equal to the product of one atmosphere and the area of ​​the pressed workpiece. Since it is impossible to pump out air deeper than one atmosphere, then the “working pressure” for creating this force cannot be more than 10 tons per 1 square meter.


What devices allow this method to be implemented?


The most correct, reliable and effective is to use vacuum dry rotary vane pumps. These pumps, although they do not create the theoretically possible maximum vacuum that guarantees the coveted 10 tons per square meter, are capable of pumping out 88% of the air to create a pressure drop of up to 8.8 tons per square meter. At the same time, unlike, for example, oil ones, which have a better residual pressure indicator, they are more convenient in operation and are better adapted to work at intermediate pressure values ​​​​(below atmospheric, but above the limiting residual pressure). In addition, like all vacuum pumps, they are not afraid to work with completely closed suction and discharge pipes.


The second in terms of correctness and popularity of application (which, by the way, is constantly growing and is already comparable to the popularity of pumps) are vortex blowers. If you connect a vortex blower with a suction pipe to a vacuum table, then it, working as a pump, is also able to create a vacuum, but it is 2-3 times worse in terms of vacuum depth than when pumping out with a rotary vane vacuum pump. That is, the blower (with the exception of special high-pressure series) is in principle not capable of creating a vacuum deeper than 0.4-0.5 atmospheres. In addition, it cannot work for a long time with closed pipes, as it will fail if it overheats. This is where their weaknesses end and one can understand why in many cases they are preferred to rotary vane pumps.


There are many types of material processing on vacuum tables, when, in principle, a large clamping force is not required, or when, due to the large area of ​​​​the workpiece, even a small pressure can create sufficient clamping force. This applies primarily to the processing of plastic and wood panels. The second important argument in favor of blowers is the size of the table and the impossibility of creating an absolutely hermetic evacuated volume - there is almost always a reverse movement of air into the system. Therefore, the pumping speed comes first - it is it that compensates for the leakage. Pumps with capacity over 150 cubic meters per hour is always more expensive than blowers with the same pumping speed and heavier than them. And when customers see maximum performance in the characteristics of the blower (one and a half to two times higher than the actual one at the duty point), the blower, as an alternative to a vacuum pump, seems even more attractive.


Let's summarize. In which case to choose a pump, and in which blower?


If the dimensions of the table do not exceed 3-4 meters in length, the details are small, of complex shape, the vacuum table is made with high quality (with a good fit of parts and without possible leakage), it is required to obtain a pressure drop of at least 5 tons per square meter, then best solution will rotary vane oil-free pump.


When the tables have linear dimensions of more than 5 meters, the workpieces being processed are also large, have a small specific gravity, the tangential load (shifting the workpiece) is small and is compensated by a clamping force of about 10 tons on the entire part, which has an area of ​​several square meters, the rigidity of the table does not guarantee the preservation of its shape during vacuuming, the tightness of the system is low, and the cost comes to the fore, then preference is given to blowers.


If you tell us the specific value of the down force, then we can call you and offer specific model pump or blower.


Vacuum clamping machines and fixtures are used in almost all industries. We offer solutions for each of them: from small-sized vortex blowers for holding sheets of paper or plastic in cutting plotters to specialized units capable of withstanding repeated ingress of cutting fluid into the vacuum system.
The performance of the vacuum pump used for vacuum clamp determines the speed of pumping the system to the required pressure and, mainly, the ability to compensate for air leakage through leaks or cuts formed during material processing.
The pressure drop created by the vacuum pump determines the workpiece clamping force. High differential pressure pumps are recommended for applications where maximum down force is required at small area workpiece contact and vacuum gripper.


MSH Blowers for CNC Vacuum Tables

This type of equipment allows high performance with a relatively small pressure difference. Devices of this type are used to press workpieces with a large contact area to the vacuum tables of CNC machines, for example, they can be used to press plastics, vinyl film, plywood, and other sheet materials. An important advantage vortex blowers with high productivity is that when the tool cuts through the material, as a rule, it remains possible to continue processing, because. air leaks through the slot are compensated by increased productivity. Vortex blowers are extremely unpretentious in operation, have no wearing parts, can be supplied with frequency converters, additional filters, silencers and reversers.

Elmo Rietschle rotary vane oil-free vacuum pumps for vacuum clamping systems

Machines of this type are most widely used in vacuum clamping systems. Not only do they provide enough differential pressure to hold down most types of workpieces and sheet materials, but they can also be quite greater performance. Rotary vane oil-free vacuum pumps operate without the use of lubricants in the working chamber. These pumps are easy to operate and maintain. As standard, pumps of this series already have built-in air filters and mufflers.

Water ring vacuum units ROBUSCHI (Italy) with closed water circulation for vacuum pressing

Used as an alternative to dry rotary vane pumps. These installations can provide almost any capacity required for vacuum clamping. They hardly require Maintenance, resistant to ingress of dust, coolant, can work for a long time with atmospheric suction pressure. At a lower cost for most sizes than rotary vane vacuum pumps, they require no consumables and pay for themselves very quickly.

Vacuum gauges and vacuum switches

In our company you will always find a wide range of vacuum gauges and vacuum relays necessary for monitoring the operation and control of vacuum clamping systems. Our product range includes: mechanical and digital vacuum gauges, mechanical and electronic relays vacuum, as well as other accessories: filters for vacuum systems, reverse and shut-off valves, vacuum receivers, safety valves, fittings, vacuum hoses.



Working with MSH Techno Moscow (MSH Techno), you can be sure that a wide range of supplied equipment will allow you to choose exactly what is really best suited for your tasks. If you have any questions about the equipment presented on our website, we will be happy to answer them!