Portal drilling- milling machine CNC is applicable for drilling, tapping and milling. Equipped with both external coolant supply and coolant supply through the tool. Mainly used for processing flanges, heat exchangers and tube sheets. can be used in mass production of various parts.
Design
Coordinate- drilling machine with CNC consists of a bed with longitudinal guides, along which the portal moves with a support, on which a vertical drilling spindle head is fixed. The machine is equipped with a main and auxiliary work table, three-jaw hydraulic clamp, chip conveyor, hydraulic system, coolant supply system, centralized lubrication system, axis drive control system, pneumatic system, etc. In the basic version, the CNC coordinate drilling machine is equipped with one drilling spindle. By order, up to 4 vertical drilling spindles are installed on the machine to increase productivity.
Advantages
CNC jig drilling machine with fixed table and movable gantry saves a lot of space compared to machines with movable table. The machine bed is welded. Through the use of artificial aging technology of the welded frame, the stability and accuracy of the machine is ensured. The reinforced portal significantly increases the rigidity of the entire system, providing significant cutting speeds. The working table is equipped with transverse T-slots for fixing clamping tools and workpieces.
Spindle
The CNC coordinate drilling machine is equipped with a spindle with a 37 kW motor. On request, you can install a spindle with a power of up to 56 kW and additional - up to 4 pieces - spindles. The BT50 precision spindle with internal cooling rotates at speeds from 30 to 3000 min-1.
Handwheel control panel
The handwheel control panel allows you to manually set the spindle position for drilling the first hole. This speeds up the whole procedure for holes of the same diameter. This saves a lot of time, improving production efficiency. In addition, the handwheel console can perform the following functions: it can break chips, it allows you to remove chips, pause processing and prevent drill breakage.
Optical device for finding the edge of the workpiece
The CNC coordinate drilling machine is equipped with an optical device for finding the edge of the workpiece, which makes it easy to determine the position of the edge of the workpiece in automatic mode.
CNC SIEMENS 808D
The CNC system SIMENS 808D (Germany) with LCD screen and RS232 interface is installed on the portal drilling machine. Drilling coordinates can be set by direct CAD / CAM transformation or by using a dialog interface. The CNC system allows you to compensate for errors, has the function automatic alarm etc. Holes in the workpiece can be automatically repeated. With the function of previewing and rechecking the position of the hole before drilling, the machine is very easy to operate.
The best components
To ensure accurate and stable operation, all important parts of the gantry drilling machine, such as precision spindle, ball screw, roller linear guide, CNC and servo drive system, hydraulic pump, valves, etc., are used only from the best famous brands in the world.
| Specifications | GZC2020 | GZC2525 | GZC3030 |
| Maximum workpiece size, mm | 2000x2000 | 2500x2500 | 3000x3000 |
| Maximum workpiece thickness, mm | 300 | 300 | 300 |
| T-slot width desktop, mm | 28 | 28 | 28 |
| Number of vertical spindles, pcs. | 1 | 1 | 1 |
| Spindle type | BT50 | BT50 | BT50 |
| Maximum drilling diameter, mm | 60 | 60 | 60 |
| Maximum drilling depth, mm | up to 300 | up to 300 | up to 300 |
| Spindle speed, min-1 | 30-3000 | 30-3000 | 30-3000 |
| Spindle motor power, kW | 37/56 | 37/56 | 37/56 |
| Maximum spindle torque, Nm | 700 | 700 | 700 |
| Distance between spindle and table, mm | 280-780 | 280-780 | 280-780 |
| Movement along the X-axis (gantry), mm | 2000 | 2500 | 3000 |
| Travel speed along the X axis (gantry), m/min | 0-10 | 0-10 | 0-10 |
| X-axis servo motor, power/torque, kW/Nm | 2x3.5/28.4 | 2x3.5/28.4 | 2x3.5/28.4 |
| Movement along the Y-axis (caliper), mm | 2000 | 2500 | 3000 |
| Movement speed along the Y axis (caliper), m/min | 0-10 | 0-10 | 0-10 |
| Y-axis servo motor, power/torque, kW/Nm | 3.5/28.4 | 3.5/28.4 | 3.5/28.4 |
| Movement along the Z axis (drilling head), mm | 500 | 500 | 500 |
| Movement speed along the Z axis (feed), m/min | 0-5 | 0-5 | 0-5 |
| Z-axis servo motor, power/torque, kW/Nm | 3.5/28.4 | 3.5/28.4 | 3.5/28.4 |
| Positioning accuracy along the X axis, mm | 0.06/full length | 0.06/full length | 0.06/full length |
| Positioning accuracy along the Y axis, mm | 0.06/full length | 0.06/full length | 0.06/full length |
| Repeatability along X-axis, mm | 0,03 | 0,03 | 0,03 |
| Repeatability along the Y axis, mm | 0.03 | 0.03 | 0.03 |
| Hydraulic pump pressure/capacity, MPa / L/min | 6,5/25 | 6,5/25 | 6,5/25 |
| Hydraulic pump engine power, kW | 3 | 3 | 3 |
| Compressed air pressure, MPa | ≥0.4 | ≥0.4 | ≥0.4 |
| Chip Conveyor Type | leaf chain | ||
| Number of chip conveyors, pcs. | 1 | 1 | 1 |
| Chip conveyor speed, m/min | 1 | 1 | 1 |
| Chip conveyor motor power, kW | 0,75 | 0,75 | 0,75 |
| Coolant supply motor power through the tool, kW | 3 | 3 | 3 |
| Engine power of external coolant supply, kW | 0,75 | 0,75 | 0,75 |
| Pressure in the automatic lubrication system, MPa | 2 | 2 | 2 |
| The volume of supply of spot lubrication, ml. | 0,1 | 0,1 | 0,1 |
| Siazki cycle, min. | 6-10 | 6-10 | 6-10 |
| CNC system | SIEMENS 808D | ||
| Number of CNC controlled axes, pcs. | 4 | 4 | 4 |
| Total power consumption of the machine, kW | 65 | 65 | 65 |
| Machine size, LxWxH, m | 6.2X5.3X3.6 | 7.1X6.0X3.6 | 7.5X6.4X3.6 |
| Machine weight, t. | 25 | ||
CNC drilling machines are designed to automate the process of forming through and blind holes, countersinking, reaming. They differ from similar equipment in high speed of operations, as well as the ability to quickly change over to process parts of various configurations.
Types of machines and their design features
The presence of digital program control in the equipment makes adjustments to the design and layout. Drilling machines of this type have additional functionality and can be used for in-line production.
The main difference is the movable desktop. With the help of the feed system, it can change its position in the horizontal (longitudinal and transverse directions) and vertical planes. This is done using stepper motors or servo drives connected to an electronic control unit. Thus, the maximum rate of automation of the CNC drilling equipment is achieved.
There are the following design features characteristic for this type of equipment:
- spindle arrangement - vertical or radial. Most often there are models with a vertical spindle and the ability to rotate the working head;
- execution - desktop or floor. For processing massive workpieces with large dimensions, a good stability index is required. Only floor models can provide it;
- revolver heads. They make it possible to use several types of drills without changing each. Changing the position of a particular drill is due to the displacement of the head;
- number of spindles. For simultaneous processing of a workpiece in complex machines, several spindles are provided.
The operation of the working head and the coordinate table is performed using the CNC unit installed in the equipment. Modern models have an electronic control unit with the ability to connect to a computer. This makes it possible to quickly compose programs for processing without intermediate activation of the machine. In the future, it is enough to load the PC into the control unit and test it.
An analogue of the turret is a tool magazine. This unit is designed for atomic change of the cutting tool in the process of material processing.
Based Specifications
The defining characteristics of CNC drilling machines are the set of functions, the parameters of the electronic control unit and the requirements for workpieces. To get acquainted with them, it is necessary to study the equipment passport.
Depending on the processing materials, CNC drilling machines can perform the formation of holes in wood or metal blanks. To perform these operations, additional nodes are provided in the equipment. For metalworking, there is a coolant supply unit and a container for collecting metal chips and dust. During the drilling of wood products, by-products are removed by air ventilation.
But despite these differences, equipment of this class has a number of common technical parameters:
- desktop feed parameters - maximum movement rates and the speed of these operations;
- frequency of rotation of the spindle head;
- rated power of the power plant of the main drive;
- allowable dimensions and weight of the workpiece;
- head design for installing a drill - classic, revolving or tool;
- coolant supply method. For metalworking equipment the best option is the supply of coolant through the drilling tool;
- positioning accuracy. To increase this parameter, hydraulic cylinders are used in the equipment. With their help, a reliable fixation of the part on the desktop is performed;
- desktop dimensions and the possibility of installing an additional structure for processing large workpieces;
- CNC parameters - type of control, methods of entering information, display devices.
Equipment of this type can operate in automatic or semi-automatic modes. In the first case, operations are performed without the participation of an employee. In the second, after each cycle, it is necessary to enter an exposing command to continue processing.
In the video you can see an example of the operation of multifunctional equipment:
CNC, unlike conventional models, are controlled by special program, which contains all the parameters of the processing to be performed. With the help of machines of this type, it is possible to process parts of flange, body and planar types, using cutting tools for various purposes (drills, reamers, countersinks, etc.). On most machines equipped with a CNC system, it is possible to perform the entire complex of drilling and milling operations with workpieces of various shapes with high accuracy.
Varieties of CNC drilling machines
On the modern market We offer a wide range of CNC machines. So, for purchase in accordance with the needs of a particular production, the following are available today:
- CNC machines of vertical and horizontal drilling group;
- equipment with one spindle head or a set of them;
- devices on which the tool is changed manually, or special tool magazines are used;
- multi-operational with CNC, effectively used for complex processing of workpieces that differ even in complex configurations.
The machines that served as the basis for the creation of the 1st generation of CNC equipment were models 2H118, 2H135, as well as the machine of the radial drilling group 2H55. Initially, the automation of drilling machines occurred due to the installation of coordinate tables, which made it possible to automatically position the workpiece relative to the cutting tool along two coordinates. On such drilling machines, a semi-automatic processing technology was implemented, the parameters of which were set using a plug-in panel or cam mechanisms (workpiece processing depth), by changing the operating modes of the cutting tool.
CNC coordinate drilling machine model 2550OS1000MF4, produced in the 80s of the last century
This generation of automated drilling machines did not suit manufacturers with its technological capabilities, so the 2nd generation of such equipment appeared, based on the models 2R118F2, 2R135F2, etc. In improved machines, not only the movement of the desktop is automated, but also the feed of the tool. The productivity of such machines is also increased by the fact that they are equipped with an automatic turret, in which 6 cutting tools can be simultaneously fixed.
Drilling machines equipped with a CNC system are one and a half to two times more productive than manually operated equipment, and models in which tool change is automatic are three to four times more productive.
Benefits of CNC Drilling Machines
Due to the versatility that CNC-equipped drilling machines have, they can be classified in the same category as boring, as well as jig boring and consoleless milling equipment with a vertical arrangement of the working head. Since such machines are necessary to perform various technological operations, their design is performed with higher rigidity, as well as the accuracy of the layout of all constituent elements. In most machines belonging to this category, the positioning accuracy of moving structural elements is ± 0.025–0.05 mm.
For less universal models CNC drilling machines use positional control systems, and on equipment that serves to perform not only drilling, but also milling technological operations, combined control systems are used - positional and rectangular. CNC equipment belonging to the vertical drilling category is equipped with a cross-type worktable.
Manufacturers today present CNC drilling equipment in several categories:
- vertical drilling machines with one carrier column and a cross table (on machines of this type, holes with a diameter of 18–50 mm (2N135F2) can be obtained);
- single-column drilling machines of vertical type, equipped with a cross table and a turret working head (2R135F2);
- machines with a vertical layout with a cross table and a tool magazine;
- portal-type drilling machines, produced in all the above modifications (2306PF2) (on machines of this type, it is possible to form holes with a diameter of up to 60 mm; coordinate drilling machines also belong to this category).
A separate category is made up of CNC filler drilling machines, which are used for the production of furniture.
Design features of CNC drilling machines
For smooth and accurate movement of coordinate tables, which are equipped with program-controlled drilling equipment, they are mounted on rolling supports, and their movement in two directions horizontally is ensured by the “screw-rolling nut” connection. The design of the drive of such tables includes a stepper motor and a hydraulic booster.
The kinematic scheme of the main drive of CNC drilling equipment is based on a one- or two-speed electric motor and a gearbox for switching the speed of rotation of the spindle assembly.
The control of the vertical movement of the working head (Z axis) can be implemented according to several schemes:
- through the use of stops and microswitches;
- using a set of programs on a special plug-in panel;
- a set of programs on punched tape.
To expand the functionality of CNC drilling equipment and increase the efficiency of its use, various devices can be used in its equipment.
A CNC drilling machine is a program-controlled equipment for creating and processing holes in body and planar parts from various materials.
List of synonyms:
- CNC drilling machine;
- Drilling machine;
- Automatic drilling machine;
- CNC drilling equipment.
The machines of the drilling and boring group have universal capabilities and work with a wide range of shaping cutting tools (drills, taps, etc.). This allows you to perform such technological operations as:
Main and auxiliary tool for drilling equipment
drilling- creation of through and semi-through holes in workpieces using the translational-rotational movement of the cutting tool. A wide choice of drill diameters and materials from which they are made allows the use of drilling machines for working with surfaces of almost any density.
Reaming (boring)- semi-finishing drilled holes using a special tool (sink). The operation is carried out in order to increase the diameter and improve the quality of the inner surface of the drilled holes.
Deployment- a process in its purpose similar to reaming. Used for finishing, i.e., finishing holes. The reamer removes metal in small layers (0.02-0.4 mm), as a result of which the parameters of accuracy, smoothness and regularity of the shape of the holes become ideal.
Cutting internal thread - an operation that is performed using taps for further threaded connection of workpieces. A tap is a rod-shaped tool made of carbide steel with pointed grooves, which, when the fixture is rotated, cut a thread on the inner wall of the hole.
Unlike manual machines, CNC drilling equipment has a number of advantages:
- increased accuracy of drilling holes;
- high speed of work;
- predictability of the duration and end time of the work process;
- minimizing marriage.
In view of the high quality and economic indicators, not a single medium- and large-scale production can do without program-controlled drilling equipment. industrial production. Drilling and boring machines can be found in all production and repair and assembly shops, in particular:
- at enterprises of the aviation industry;
- in mechanical engineering and shipbuilding;
- in the machine tool sector;
- in the instrumentation industry.
Classification of CNC drilling equipment
CNC drilling machine
With all the variety of models, automatic drilling machines can be classified according to several important parameters:
Spindle head position
- vertical - the frame with the spindle head is located vertically relative to the table. The most convenient, multifunctional and frequently used type of drilling machine. Most models have a swivel working head with the ability to mount multiple cutting tools at the same time. The drilling diameter on such machines can reach up to 75 mm.
- radial - the most complex and multifunctional machines that allow you to process workpieces in three planes. The spindle head is located on a traverse, which moves freely in a vertical plane. In this case, the bearing column of the machine can be rotated 360 degrees.
Degree of versatility
- special - perform only one or two operations in a certain type of workpiece and, as a rule, cannot be reconfigured to perform other work;
- specialized - equipment that allows you to perform a limited number of simultaneous operations in certain types of workpieces. Most often used for deep drilling, but they can also perform other manipulations, as they are equipped with a large number of tools and fixtures.
- universal - the most common machines in mass production. They work with a wide range of metal operations: drilling, countersinking, countersinking, creating left-hand and right-hand threads, etc.
Number of spindles
- single-spindle - for working with one tool;
- multi-spindle - for step-by-step processing of a hole with various tools that automatically start working, without wasting time for manual replacement.
Also, machines can be classified according to table mobility, maximum drilling diameter (up to 75 mm), spindle speed (2000 - 3000 rpm), etc.
Among the leading manufacturers of CNC drilling equipment:
- D.M.C. ( South Korea)
- Weida (China)
- Spinner (Germany)
- Realmeca (France)
The equipment is used for making holes (both blind and through) and milling. Combining these operations, which are most in demand in metalworking, machines allow you to save production space. CNC machines are divided into the following types: vertical milling, console milling, longitudinal milling, universal.
By execution, they can be floor and desktop. The latter are distinguished by their small size and scope.
Functions of CNC drilling and milling machine
- milling,
- boring,
- drilling,
- threading,
- reaming, etc.
CNC equipment makes the equipment more productive. Details on the machine are processed with drills and cutters.
Classification of CNC drilling milling machines
Signs by which the equipment is classified:
- the spindle axis can be positioned horizontally or vertically;
- the number of coordinate movements of the milling head and table;
- the number of tools used (there are both single-tool and multi-tool);
- manual or automatic installation tool into the spindle.
Design
The equipment consists of:
- grounds;
- table moved in different directions;
- steel column (hollow);
- drilling and milling head, in the spindle of which the cutting tool is fixed;
- engine;
- gearboxes (in the spindle head).
The rigidity of the design of the machines is ensured, among other things, by the absence of a console. The drilling-milling head (it is a gear box) can process inclined surfaces and drilling at an angle.
Advantages of CNC drilling and milling machines
- speed,
- uninterrupted operation (processing of inclined, vertical and horizontal surfaces),
- simple control,
- accuracy,
- low level noise,
- lack of vibration
- saving work space.
How to choose and buy a CNC drilling and milling machine
When choosing a drilling and milling machine, you should pay attention to the following characteristics:
- power,
- desktop size,
- axes for moving the table,
- maximum drilling diameter,
- spindle speed,
- machine weight.
CNC drilling and milling machines are used in large- and small-scale production (depending on power and purpose).
You can purchase a CNC drilling and milling machine very easily and quickly. It is enough to put the goods in the basket, place an order and pay in any convenient way.
