Desktop lathe. Desktop lathes for metal. Machines brand JET

Do you need a quality and mobile lathe for your private workshop? Desktop lathes from a warehouse in Moscow at low prices. Delivery is carried out throughout Russia. Machines are guaranteed for 1 year. Service of high quality.

HAPPENED! In 2016, we updated the Metal Master MML 1830V line of lathes. The most popular model, now with improved performance.

Video: how to prepare a desktop lathe for work?

Delivery to your city is carried out by a transport company, but if it is convenient for you, you can pick up the machine from a warehouse in Moscow.

Bench lathes are widely used in small-scale production with limited space or in private workshops.

This equipment will allow you to process metal surfaces (external, cylindrical, internal, conical), as well as to cut metric or inch threads. With special equipment, drilling can be carried out.

The small dimensions and light weight of the equipment in question make it very convenient for use in a private workshop.

• Consider the features and benefits of desktop lathes:
• Low cost;
• Easy maintenance;
• Excellent performance for a long time;
• Basic cast structures are made of cast iron, which in turn guarantees a low level of vibration impact and high stability during work operations;
• Precision roller bearings provide excellent spindle support (parts are machined with very high precision);
• Minimum noise level during operation;
• Compliance with quality certificates: CE, TSO, 900.

And so you decided to buy a desktop lathe, then first of all we advise you to pay attention to the maximum possible diameter of the workpiece, the maximum length of the workpiece to be processed, the weight of the equipment, as well as its power.

Being an exact copy of a standard lathe, benchtop equipment is designed for the manufacture of piece parts. There are also restrictions on the dimensions of the processed workpieces. Its main advantage is functionality with compact dimensions, it is successfully operated in small workshops, car services and amateurs. A small device allows you to accurately process metal, it is easy to operate, and there is a place for it even in the cramped room. CNC devices are designed to produce small batches of the same type of parts and have found application in small businesses.

Classification of desktop turning units

The main purpose of lathes is the processing of cylindrical and rounded parts. In the process of removing excess metal layers from the surface of the workpiece, it is given the necessary shape. The process is called turning. If a cavity inside the part is selected, boring is performed.

In industrial production, lathes of several modifications are used:

• screw-cutting;
• revolving;
• multi-spindle;
• with CNC.

Mini machines for the home belong to the universal (screw-cutting) type of equipment and are designed specifically for the manufacture of piece products or small batches. Screw-cutting lathes are able to perform a number of metalworking operations:

• turning and boring parts;
• end processing;
• reaming of through and blind holes;
• threading;
• making holes;
• grooves and grooves;
• reaming.

The functionality of the device can be expanded by purchasing additional devices, the range of which is quite large.

Design and principle of operation

The device of the mini apparatus is practically no different from its “large” counterpart. The complexity of the design is explained by the high requirements for the accuracy of the finished product and the quality of the processed materials.

The main parts of the machine: bed and caliper. The bed is the basis for the rest of the nodes. The support is designed to fix and move the cutter in a precisely marked direction.

Before starting the machine, the part is fixed on the front post (headstock) in the spindle, which receives movement from the electric motor. The control devices and the gearbox are also located here. The spindle is a cylindrical part with a very precise geometry. It has cut out seat belts for bearings. The latter are combined with reciprocal grooves in the A-pillar. The characteristics of the spindle are largely responsible for the accuracy of processing. The caliper is moved by means of transmission devices and the stroke shaft.

When turning elongated workpieces, the second end is supported by a rear stand (headstock), where a center is provided for this purpose. Here you can also fix the cutter (tap, drill) for boring the end. The rear rack is a cast structure that moves along the rails of the base. For movement, a handle is provided, installed in a certain position, it fixes the headstock at the desired point. The transverse position of the tailstock is adjusted by a screw, which is used when it is necessary to align the centers (coaxiality) and turning workpieces in the shape of a cone. Vibration is eliminated using steady rests of various diameters.

The mass of a desktop device can be from 13 to 60 kg, with a power of about 500 watts. For comparison, the power of a semi-professional machine is at least 1000 watts. He can handle the production of small batches of parts. The mini lathe for the home is connected to the mains 220 V, it works very quietly.

The defining characteristics of a metalworking machine are the maximum diameter and length of the workpiece. The length is determined by the distance between the centers. Typically, the diameter of the workpiece that can be turned on a desktop lathe does not exceed 15 cm.

Part fasteners

Depending on the shape of the workpiece, the following options for fixing it in the machine are used:

• faceplate - for fastening workpieces of complex configuration or large dimensions. The disadvantage of this method of fixation is the complexity of fastening and centering the workpiece relative to the axis;
• three- or four-jaw chuck - hardened and soft are distinguished;
• collet chuck - convenient for fixing thin workpieces, for example, from a bar or clamping an already turned part;
• drill chuck - does not withstand radial stresses, but can clamp parts of various shapes and sizes.

Types of cutters for desktop lathes

Metal turning on the machine is carried out using cutters. There are several groups and types of incisors:

• draft - for rough processing of the workpiece;
• semi-finishing - with their help, you can bring the part to readiness with average requirements for quality and accuracy;
• finishing - these cutters are designed for fine work and final finishing, they remove the thinnest layer of metal.

The cutters also differ in the profile of the working edge. The most used are through and boring. The former sharpen the outer contours of the workpiece of a cylindrical or conical shape. The second are designed to sample the material from the inside. Threaded are designed for threading inside and outside the part. grind the end of the workpiece and cut off the finished part. They can also be used for applying transverse grooves.

Particularly complex figured parts are cut out with shaped tools.

• processing of cylindrical surfaces is carried out with a through-type cutter;
• for reliable fixation in the machine, the end stop of the part is inserted into the cartridge by 1 - 1.5 cm, the length of the finished product will be less than the workpiece by this value, so the workpiece is taken with a margin;
• grooving is performed at a low speed of rotation, without pressing hard on the cutter.

What parameters to consider when choosing

Weight and dimensions. Initially, it is assumed that the machine should be quite compact. Especially if you plan to work at home or in the garage. If the machine weighs about 100 kg, it is quite difficult to find a sturdy table or workbench for it. You will have to make a special stand, which will take up extra space.

Mains settings. Most desktop machines are connected to 220 V networks, but it is worth further clarifying this indicator, because it is expensive and technically difficult to bring a 380 V cable to the apartment.

Workpiece dimensions. Experienced craftsmen select machines with a center distance of about 40 cm. This is enough for most amateur work.

Machine power. Should be in the range of 500 - 750 watts.

Electric motor type. Asynchronous electric motors are characterized by a longer service life before the first repair.

Limbo. You should pay attention to the size of the divisions of the limbus. The smaller they are, the more accurately the machine will work.

The speed of the machine and the presence of reverse. All desktop lathes have the ability to adjust the speed, this is understandable. The speed is selected depending on the type of metal and the nature of processing. Some models are equipped with a reverse - this is a convenient option that you can do without.

Possibility of additional equipment. We do not recommend investing in a highly specialized device. Many models come with various accessories that expand their capabilities. For others, you can choose the right equipment. Often, having saved on the basic configuration, you can additionally purchase all the necessary devices, eventually getting a multifunctional device.

When purchasing a machine, do the following:

• check if the moving parts of the machine do not play;
• start the equipment in several modes;
• study the accuracy of turning, as one of the most important selection parameters. If the machine is not accurate enough initially, it will be almost impossible or very expensive to fix the problem.

Overview of popular models

Quantum D140X250 Vario

The machine from a well-known German manufacturer is rich in equipment: a waste tray, spare gears, a protective cover, a cartridge box. The instruction is attached in Russian. Motor power is 450 W, at a rotation speed of up to 2500 rpm and smooth speed control, electronic controller and reverse. Handles parts up to 25 cm long and 14 cm in diameter.

Proma SM-250E

Czech-made machine with excellent functionality and high-quality implementation. Can perform most types of metal processing, including reaming and threading. The device weighs only 23 kg, it is convenient for transportation. 230 W motor, with a rotation speed of not more than 2000 rpm. Works with parts up to 14 cm in diameter, up to 25 cm long.

Profi-350

The product of Chinese masters will not disappoint with its quality and functionality. Engine power 350 V, rotation speed 3000 rpm, there is a reverse and a smooth change in speed. Differs in high precision of turning of details. Works with blanks up to 18 cm in diameter. It is complemented by a variety of accessories that expand the capabilities of the device.

Corvette 400

Compact and inexpensive machine of domestic production. The power of the electric motor is 400 W, it works from a household power supply with workpieces up to 18 cm long.

JET BD-3

An excellent device from a Swiss manufacturer. Power consumption is 150 V at spindle speed up to 3800 rpm. Works with blanks up to 10 cm in diameter, up to 15 cm long. Provides professional precision in processing parts. Weighs only 13 kg, but due to the special design of the housing, vibration is completely eliminated. The legs are rubberized, so the device does not slip on a smooth surface. Longitudinal tool feed is carried out automatically.

The production of some parts can be carried out in a home workshop or garage. To do this, the installation of a variety of equipment is carried out. The desktop lathe has become quite widespread. Its functionality is quite enough to obtain a wide variety of products. The metalworking machine in question is in many ways reminiscent of industrial models, however, they are used to produce small-sized products.

Equipment design

A small desktop lathe for metal has similar properties to industrial models. The complexity of the created design determines that it meets the high requirements for the accuracy of the resulting products. The design features are as follows:

1. The main parts of the mechanism under consideration can be called a frame and a caliper. The bed is used as a base for connecting all elements and their precise positioning. A caliper is used to fix the tool. The cutters of a desktop turning machine for processing metal blanks can be rotated at a certain angle relative to the surface to be machined.
2. The part, which in most cases resembles a body of revolution, is fixed in the spindle. In the front part there is a rack, inside of which there is an electric motor to create the main rotation transmitted to the workpiece. In front there is a gearbox, represented by a combination of gears.
3. The movement of the caliper is carried out in the longitudinal and transverse directions. To do this, a transmission device and a stroke shaft are installed.
4. To significantly increase the accuracy of processing, the device is equipped with a tailstock in which the center is attached. In some cases, it is possible to mount a tool for boring. In addition, the tailstock can change its position due to the slide. Vibration can be reduced by positioning a steady rest of the required diameter.

The key feature of the design is that its weight varies from 13 to 60 kilograms. This simplifies the process of transportation, installation and maintenance. The power of the electric motor is about 500W. At the same time, power is supplied from a 220 V network, which also simplifies the installation process in a home workshop.

Some models are equipped with a milling function. In order to improve the quality of processing, a program control unit is installed. It allows cutting, drilling and milling in automatic mode according to a written program.

Classification of desktop lathes

The main purpose of the equipment of this type is to obtain products by processing cylindrical blanks. When a certain amount of material is removed from the surface, a certain shape is given. Desktop screw-cutting lathe is used in various workshops. Classification according to the degree of modification is carried out as follows:

1. Revolver.
2. Screw-cutting.
3. Multi-spindle.
4. CNC.

The turning and milling desktop machine has become widespread, since such equipment can be used to produce a wide variety of products. Milling differs from turning in that the main rotation is transferred to the tools. Due to this, it becomes possible to carry out the processing of flat surfaces.

The lathe combined desktop machine is also characterized by very high performance and functionality. In addition, there is a desktop one that can be installed to obtain accurate products.

In addition, it is worth considering the relatively low cost of equipment. You can buy a desktop version at a lower cost when compared with industrial desktop lathes.

On sale there is just a huge number of different desktop options. The main recommendations for the choice are the following points:

1. Bed size and weight of the whole product. There are very compact models on sale that do not require special installation conditions. However, equipment that is too light is prone to vibration and is less stable. With a structure weighing about 100 kilograms, it may be difficult to select the most suitable turning model.
2. The electrical parameters are also important. Most of the options are powered by 220 V, but there are also models that are powered by a three-phase network. The three-phase version is much more difficult to install, since a separate cable has to be laid.
3. Dimensions determine how long workpieces can be turned. There can be a distance of about 40 cm between the centers. This is quite enough to obtain the most common products.
4. The power of the turning mechanism is also the most important parameter. It is recommended to give preference to models with an indicator of 500-750 watts. Manufacturers install various types of electric motors. Asynchronous versions have a longer service life and high performance.
5. Limbo. When choosing, it is also recommended to pay attention to how divided the entire limbus is. With a decrease in the index, the accuracy of processing increases significantly.
6. Another important parameters are the presence of the spindle reverse mode and the speed of the model. Almost all models have a speed control function. The cutting index is selected depending on the type of metal and the nature of the procedure. Reverse is considered a convenient option, but it is used extremely rarely.
7. It is recommended to pay attention to the version with additional equipment. Experts do not recommend investing in highly specialized devices, since their capabilities are not so extensive. Through the use of equipment, you can significantly expand the functionality of devices.

1. The absence of backlash is checked. This situation leads to a decrease in processing accuracy.
2. At the time of the test, it is recommended to check the device in all modes.
3. One of the most important parameters is the turning accuracy that can be achieved. If the indicator is low, then no equipment, adjustment will allow you to achieve the desired result.

A mini CNC metal lathe has become less widespread. The numerical control block allows you to automate the process and achieve higher processing accuracy.

In conclusion, we note that it is quite difficult to make a machine with your own hands. This requires an electric motor as well as other elements. Homemade equipment is characterized by relatively low accuracy and low functionality. However, by using improvised materials, you can significantly reduce the cost of arranging your own workshop.

The desktop metal lathe is mounted and fixed directly on the desktop or special platform, and, having a very low cost compared to industrial equipment, is great for use in a small workshop. Like industrial machines, desktop machines are used for machining parts by cutting and turning. The desktop lathe allows you to perform all the necessary turning operations, namely: turning workpieces of various shapes, grinding products, drilling and processing holes, cutting threads (metric or inch), trimming workpieces, creating notches on the surface of the workpiece, sharpening equipment and tools.

In the case of using additional components, it is possible to mill parts, as well as work with products made of non-metallic materials: wood, plastic.

A desktop metal lathe is a necessary equipment for use in small repair shops, a garage, at service stations for cars and trucks, as part of workshops for educational institutions, and at home. Such machines allow the production of a wide range of parts, such as nuts and bolts of non-standard shapes and sizes, when they are not at hand.

Benefits of Bench Lathes

• low cost of equipment;
• input voltage corresponds to a standard household network - 220 V;
• adaptation is available for operation in the industrial voltage circuit - 380 V;
• economical consumption of electrical energy;
• high reliability, allowing to operate desktop machines for a long time with proper periodic maintenance;
• compactness, which makes it possible to install the machine in rooms of any size;
• available for use by inexperienced turners with initial skills due to ease of maintenance and operation;
• high accuracy of workpiece processing due to the use of precision roller bearings in the spindle design;
• low values ​​of noise and vibration produced during the operation of the equipment.

A mini lathe is a great solution for those who need to work with piece parts from time to time. It can be placed even in the cramped spaces: garages, home workshops, offices. Its functionality is in no way inferior to factory models, except that the dimensions of the blanks will be different. In this article, we will talk about the principle of operation and varieties of such machines, their advantages, and give recommendations on choosing the right model for your tasks.

Appointment of mini-turning machines

In fact, a mini-machine is a smaller copy of a larger factory equipment. It is suitable for working with relatively small workpieces, mainly with bodies of revolution: these include parts in the form of spheres, cylinders, cones, and so on. It is possible with the help of such a machine to drill, grooving, cutting threads, trimming ends and much more. It is also suitable for leveling the surface. It is convenient to use it for various types of work, and the quality depends only on the specific company and model.

Having purchased a desktop lathe, install it on a special stand or simply place it on your desktop. However, it can move and wobble as you work, so for stability, we recommend attaching it to a surface. This is not necessary if you have a special pallet or work parts are small.

The bulk of such devices is used by craftsmen in everyday life, in small auto repair shops, as well as for teaching schoolchildren and students in turning business - in school labor offices or in workshops of technical institutes. They are famous for their high functionality. without taking up much space and without requiring special additional equipment. As a rule, they are not suitable for working with large volumes of parts and in industrial production.

Nevertheless, even at large enterprises there is a need to manufacture miniature products - for example, in the manufacture of watch movements. In such cases, particularly accurate models for serial and small-scale production are used. Here are some of them:

• 1Р103
• 1B023
• 16T02A

The design of turning mini-machines for metal

Fully justifying its name, the mini-machine differs from its full-sized counterpart in almost nothing, except for the dimensions.

Its main element is the frame to which all other parts are attached. It is the basis of all nodes and has holes for attaching to the table. Usually made of cast iron.

The next element is a caliper into which a drill, cutter or other processing tool is fixed.

He is also responsible for moving the drill in the right direction, without deviating from the course. It moves with the help of a drive shaft and transmission devices.

The part is fixed on the spindle - another part of the machine, made in the form of a cylinder. It is on its parameters that the quality of the entire device depends. It is powered by an electric motor.

There is a special center on the rear rack that holds long parts while turning them. The stand is driven by a special lever and fixed after setting the required position. However, such fine regulation is not available on all devices.

The drive at the machine is most often belt-driven - this is the most convenient option, since it is more reliable in cases where the workpiece is jammed and the mechanism stops.

The smallest machines have only one place for the cutter in the holder, so each time before changing the operation you will have to insert it again and adjust the height. There is also the possibility of adding a mini-machine - you can buy a special holder with a turn. But it can be dangerous for a novice turner, who runs the risk of stumbling upon one of the cutters that are not used during work, which will stick out on the sides at this time.

Ways of fastening parts

For different parts, different types of fasteners are used..

Varieties of incisors

For desktop mini-turning machines for metal, different cutters are used. Among them are distinguished:

There is also a classification of incisors depending on what types of work are performed..

• Boring - with the help of them, material is sampled from the inside.
• Through - are used to work from the outside of the workpiece, which has the shape of a cylinder or cone.
• Cut-off - they can apply transverse grooves, as well as cut off parts and sharpen the butt.
• Threaded - threads are applied anywhere on the workpiece, including the inside.

Advantages of using mini-machines

Choosing a machine

Be careful when choosing a lathe, otherwise it will be difficult or impossible to use it at all. First, think about why you need it and what exactly you will do on it.

Thinking about all these parameters in my head you can choose the model you need.

When choosing, you need to pay attention to some characteristics of the device:

About the cost and purchase of used devices

Do not buy the most expensive machine on the market - most likely, there may be an equal but cheaper model to solve your problems. However, you should not go to extremes and buy an advertised mini-machine that supposedly can do everything and at the same time has a suspiciously low price. It is best to approach the issue thoroughly: read all the reviews about the models, chat with sellers, read various sources on the topic and only then make a choice.

There is another option - buy used equipment. It will cost you less, but in order not to risk buying a faulty machine, ask the seller to present all the technical documentation for it before buying. We do not recommend that you purchase the device if the person does not have these documents. In that case, if it breaks, you won't even be able to fix it because you won't know what part to order.

In addition, you need to check the quality of the mini-machine on the spot. Check how well the spindle rotates, how accurately the processing is carried out - the same as indicated in the data sheet, or not. After a satisfactory inspection result, you can purchase the device.