In the woodworking and furniture industries, operations are often involved that allow you to precisely adjust the parameters of individual blanks. Usually the target material is wood, but sometimes in the same furniture production at the same technological stage plastics, gypsum boards, polystyrene, etc. can be treated equally. To fulfill some of these tasks, grinders are used. With the help of such equipment, the operator properly forms both the edges of the products and a smooth surface. The most effective in corrective work is a wood sizing and grinding machine, which allows high-quality and accurate processing.
Features of the structural device
Unlike classical grinding machines, models with a calibration function provide more accurate and reliable fixation of the workpiece during its processing. To do this, guide rails, rollers and clamps are used, using a clamping mechanism to control the position of the workpiece. The machine body is a massive rack equipped with a tunnel through which the processed material passes. The engine is responsible for the entire workflow, with an average power of 9-15 kW. It drives the shaft of the grinding and calibration machine, which contributes to the implementation of the machining of the product.
By the way, this is the most worn out part of the equipment, since it accounts for high loads. The shaft may be metal or rubber. In the first case, you can count on its durability and reliability, but it will be necessary to prepare for overloads of the power plant. Rubber is softer and lighter, which allows you to spare the engine, but its service life is several times less than that of metal counterparts.
Equipment specifications
The power potential of such machines is quite large and, as already mentioned, can reach 15 kW. This is approximately 15-20 liters. from. Depending on the model, the machine may have several speed modes. Two-stage speed control systems typically allow a run of 2-3 m / min. A separate function for feeding the workpiece is performed by the second engine, whose power is 400-600 watts. He can control both the calibrating feeding platform and the nodes responsible for the clamping force.
The grinding belt of calibration and grinding machines, the main parameter of which is the width, also varies in characteristics. Small mini-machines of this type are equipped with tapes 75-100 mm wide. This is enough to handle small fittings. Industrial full-format machines are provided with tapes, the width of which reaches 1200 mm. To control such a tape, a metal shaft with a diameter of at least 100 mm is more often used. From the installation point of view, the weight of the machine is also important. On average, it varies from 500 to 800 kg.
Processing options
Again, depending on the structural composition, the machine can perform processing with different parameters and optional capabilities. A typical mode is flat grinding. In this case, the above-mentioned tape is fixed to the shaft, and the processed material in the form of flat sheets is placed on the feed tray. As a rule, standard grinding allows you to get the smoothest surface. In more complex structural variants of planting of processing mechanisms, the operator can carry out not only direct, but also angular processing.
In such designs, the calibration grinder supports the rotation of the drum with abrasive tape in a vertical plane. For reliable fixation of the workpiece, machined in difficult conditions, at an angle, special stops and guide strips are used, capable of changing the position in accordance with the position of the drum. The format of oscillation processing, which is implemented using a spindle with an abrasive winding, is also widespread.
Implementation of automation in machines
Today it is almost impossible to meet a grinding machine in which elements of automatic control or control would not be involved. In the professional sphere, even semi-automatic models are less and less used, and manual ones are used only in small workshops or households. An automated calibration and grinding machine provides the possibility of an emergency stop of the working process, precise positioning, centering of the belt, adjustment of the feed rate of the workpiece, etc.
By the way, positioning accuracy in some models reaches 0.1 mm. The operator can only set the optimal mode in which individual operating parameters and commands will be provided. Electronics makes a decision based on data received from various sensors. For example, a temperature sensor detects engine overheating, as a result of which the system automatically disconnects the power plant or reduces the speed of its operation based on a signal from the sensor.
Buldog Machine Reviews
Manufacturer Buldog is part of a narrow circle of large companies that specialize in processing machines, offer modern high-tech solutions. Of particular interest in the market is the SPB 1010 line. As noted by the owners, these machines are optimally suited for finishing finishing and surface treatment of plate materials. Experts point to the optimized running gear with the configuration of the roller-iron. Thanks to the combined work unit, the Buldog calibration and grinding machine performs its tasks quickly and efficiently, maintaining optimum quality.
Jet Product Reviews
Jet at all is, if not the most, then one of the largest manufacturers of power equipment and industrial equipment. In this context, it is worth considering the modification of the DDS237, which is considered universal for both small enterprises and large production lines. Traditionally, products of this brand are characterized as reliable, stable in operation and durable. But this Jet calibration sander also features ergonomics. According to service operators, the convenience of operations is due not only to a wide range of adjusting mechanisms, but also to a well-thought-out design in terms of physical comfort in handling.
Reviews of models GRIGGIO
This is an Italian company that offers a wide family of calibration and grinding equipment for various needs. In particular, as the owners of the GC 65-GC 110 machines note, they cope optimally with tiled wood-shaving and solid materials. At the output, the workpieces are smooth and smooth at the processing sites. If necessary, the user can implement non-standard vertical processing - such operations are best performed by modifications of recent generations. For example, the calibration grinding machine in the GC 110 version is equipped with electro-pneumatic oscillation of the tape and a digital size visualizer, which makes it possible to even perform complex processing with minimal deviations from the stated parameters.
How much does the equipment cost?
Such machines can cost 100-150 thousand rubles, and 1-2 million. The price tag is determined by many characteristics. First of all, it is affected by the design, functional support, power filling and auxiliary devices available in the basic configuration. In this case, the company Jet and for a relatively small amount of 400 thousand rubles. offers a completely solid calibration and grinding machine. Manufacturers Buldog and GRIGGIO are known only to specialists, but this does not stop them from producing expensive models of machines with price tags of about 1-1.2 million rubles under their brand. This technique is intended, rather, to equip large production lines, woodworking plants and furniture factories.
Conclusion
Calibration and grinding operations are quite common, and for their implementation it is not necessary to purchase combined machines. The same grinding is performed manually as well, which often allows to obtain higher quality. Nevertheless, the calibration and grinding machine is indispensable in cases where it is important to work with large volumes and at a high pace. That is, we are talking about factory processing conditions, the results of which are subject to the relevant requirements. An alternative to such equipment can be called only separate grinding and calibration units, but this option will cost more and will be impractical from the point of view of operation.