The domestic lathe 16K20 refers tocategory of screw-cutting devices. Its release was established at the Krasny Proletary plant in 1973. Some parts were supplied by the Gomel Combine of machine components. A modern analogue of the machine in question is the GS526U unit. The main sphere of application of the device is industrial production, in private economy it is irrelevant because of its high cost and quite impressive dimensions.
Characteristics of the Lathe 16K20
The equipment in question is used forthread cutting (metric, modular, pitch, inch configuration) and some other turning operations. This unit was widely used in the industry of post-Soviet countries. Since production, the model was removed in 1989, but in the modern market, you can find an identical Chinese copy with the same nameplate.
The basic parameters of the lathe 16K20:
- The accuracy class is H.
- The maximum diameter of the workpiece is 50 mm.
- A similar index of turning is 220 mm.
- The length of the serviced product to the maximum - 2 meters.
- Transverse / longitudinal feed limits - 1.4 / 2.8 mm / rev.
- The power rating of the main electric motor is 11 kW.
- The length / width / height of the machine is 2.5 (3.79) / 1.19 / 1.5 m. The length depends on the modification.
- The weight of the equipment with the complete equipment is 3,6 tons.
Management and equipment
Lathe 16K20 refers to an expensiveequipment and requires appropriate care. First, let's get acquainted with its management. Handwheels and switches are controlled in manual mode. The unit is additionally equipped with a center tool holder, by means of which machined and manual feed openings are processed. In this case, the tailstock is not involved.
By moving the variable sledthe axis of the cutting tool and the spindle are interconnected. Before the processing is started, it is necessary to push the visor into the bracket until it stops. The handle of the cross slide serves to adjust the position of the torch's axis.
Lathes for metal 16K20 are equippeda rigid stop of the micrometric type responsible for longitudinal movement. On request we offer a device with an upper sled and a mechanical stroke. In addition, the device is provided for multi-pass threading and finishing of polyhedral parts. This unit includes a hydrocopy support, a tapered ruler and a tool holder.
The monolithic equipment base hasbox-shaped configuration with heated grinding guides. The box additionally serves for the assembly of chips, and is also a container responsible for cooling the working fluid.
Malfunctions
In some cases, repairs orreplacement of individual parts of the lathe 16K20. Most often, repairs are carried out in the part of grinding the frame, replacing bearings or friction clutch gearbox. In the similar block of the control of transfers the gear gears and bearings more often change.
Fixing the apron is to replace the uterinenuts, bearings, polishing guide rails. When troubleshooting the calipers, the screws, nuts, wedges are changed, followed by grinding of the guide elements. If it is necessary to restore the efficiency of the tailstock, usually replace the quill, boring the working holes, perform the scraping of the guide parts. The overhaul also involves replacing the electrical filling, checking the accuracy and geometry of the unit, installing a cooling system.
Repair of lathes 16K20
The preparatory process includes checkingequipment at idle. This allows you to identify noise and vibration moments at different positions of the spindle. At this stage, a prototype can be processed to determine the state of the supports. Such a manipulation is mandatory, as it allows to detect defects that are practically not noticeable during operation.
Grinding is the stripping of all protruding edges andhollows on the surface of the machine tool. The bed set on the table, fixing the inner corners. At this stage, it is necessary to accurately align the parallel arrangement of the node with respect to the surface of the workbench. This can be done with a building level. The bed is fastened by means of plates and screws with a deflection of 0.05 mm.
Recovery of guide elements
Some plants carry out test hardening.machine rolling method. In some cases, hardening is additionally used, which increases the resistance of components to wear. The method of repair is chosen based on the degree of hardness of the guide parts and the existing repair base.
The most popular ways to restore the guides are the following options:
- Planing.
- Shabreniye.
- Grinding.
Grit refers to the most time-consuming repair process, even with minimal wear. In most cases, this manipulation is carried out mechanically, which gives a certain economic effect.
Grinding provides a high ratecleanliness and precision finish. This method is optimal when working with hardened surfaces. Grinding makes it possible to increase productivity by several times, as compared with the scrubbing operation. Handling hardened guide elements will require additional finishing.
Reviews and Price
Lathe 16K20 for metal, the price of whichstarts from 850 thousand rubles came to replace the outdated version of 1K62. New equipment has better performance. Users among the quality parameters of the equipment distinguish the following parameters:
- Long working resource.
- Reliability.
- Precision machining.
- High performance.
- Safety of work.
- Simplicity and ease of maintenance.
Marking
Considered machine is focused on processingconical, cylindrical and non-standard surfaces. Users note the versatility of the equipment, since the grounds can be of external and internal type. In addition, the unit is used for cutting various types of threads. Owners also indicate the possibility of using the machine for processing end surfaces using incisors, drills, countersinks, taps and dies.
When buying the described equipment pleaseattention to the alphanumeric code in the model name. In the index, the unit indicates that the lathe type, figure 6 - the possibility of turning and screw-cutting operations. The letter "K" in the name of the unit is the generation of machine equipment, the last figure indicates the maximum height of the centers (220 mm). The presence in the name of the letter "P" indicates increased accuracy of the device.
Finally
Lathe 16K20, reviews of which are givenabove applies to high-precision equipment. Nevertheless, from time to time, like any equipment, it requires repair. Most often, self-repair consists in replacing worn parts or grinding gaps and sharp edges. Overhaul and more serious repairs, it is desirable to entrust the master. Be sure to check the carriage, apron and guide elements after the repair level. Otherwise, the processing accuracy may be significantly impaired.
