Lathe 1A62 - technical characteristics, device

Machine 1A62, relating to the category of universal equipment turning and screw-cutting group, was conducted by the famous plant "Red Proletarian" for seven years, starting with 1949 year. The machine of this model, which replaced the units with the abbreviation DIP (from the Soviet slogan "Catch up and overtake"), enterprises were actively equipped, producing their products in large and medium series.

Screw-cutting lathe 1A62

Purpose of equipment

The versatility of the 1A62 lathe makes it possible to use it successfully in turning operations, performed on cylindrical workpieces, conical and shaped configuration, as well as in cutting threads of different types - metric, inch, modular and drinking.

Many experts know the lathe of this model and the photo, but a more complete picture of its characteristics can be made on the basis of the designation of this unit:

• "1" - digit, denoting a group, which includes lathes;
• "A" - number, indicating the generation of equipment;
• "6" - this number indicates that, that the unit belongs to the screw group;
• "2" - from this figure you can determine the height of the centers (over the bed), for this model it is 220 mm.

Technical characteristics of the machine 1A62

Unlike previous models, this lathe differs in the expanded functionality and the improved characteristics. Among such improvements are the following.

• To 1200 rpm increased spindle speed. You can choose one of 21 speeds of direct rotation of the spindle assembly and 12 - the opposite.
• 1A62 has a higher power engine - 7 kw.
• More reliable V-belts are used in the main drive of the unit.
• Reinforced design of the friction clutch of the machine.
• A reliable double-row roller bearing is installed in the front support of the spindle assembly.
• To prevent the cartridge from being accidentally detached from the spindle, which may occur when the engine rotation of the lathe 1A62 is stopped, in the design of the latter there is a special groove for fuses.
• The feed box provides direct inclusion in work of the running screw, that is necessary when performing a precise thread.
• Longitudinal support of a support can be established by means of a limb, located on the front of the unit's apron.
• Reinforced rear headstock.
• Thanks to its advanced design, the tool holder can be rotated to any angle without the help of a second hand.
• Improved cooling zone cooling system, which includes an electric pump and a tank, located in the rear pedestal.

Kinematic scheme 1A62 (press, to increase)

To ensure the required rigidity when working with long parts on the lathe model 1A62 can be installed lunette.

Technical capabilities 1A62

Screw-cutting lathe model 1A62 refers to devices, corresponding to the accuracy category "H". Of the technical characteristics of the unit should be noted:

• the maximum diameter of the workpiece, with which you can work on a lathe 1A62: over the caliper - 210 mm, over the bed - 400;
• the maximum allowable length of the workpiece, processed in equipment centers: 750, 1000, 1500 mm.
• maximum weight of the workpiece, which can be processed on 1A62 (taken by analogy with the characteristics of the improved model): when processing in the cartridge - 500 kg, when processing using centers - 1500 kg.

Appearance of the machine

Machine controls

On the front panel of the lathe 1A62 there are controls for the parameters of its operation:

• handles to set the required speed of rotation of the spindle assembly;
• lever, which allows you to increase the pitch of the cut on the thread details;
• lever, by means of which the direction to cut a carving is established (left or right);
• control the feed parameters or step to cut the thread;
• the handle for inclusion in work of the running screw or the running roller, which can be used only then, when the lathe is idling;
• the handle for inclusion of a mode of direct or return rotation of a shaft of the engine of the main drive;
• control mechanisms of the apron mechanism: handles for changing the direction of movement of the caliper during turning, to switch the feed direction (longitudinal or transverse), to turn on and off the mechanical feed mode, to attract the lead screw nut, flywheel, due to which the longitudinal slides move;
• caliper control handles (manual control of cross feed, fixing the cutter head in the desired position, move the top of the site).

Machine controls 1A62

Design 1A62 also has a handle, which is responsible for fixing the quill of the rear headstock; flywheel, which ensures its movement; electrical switches for connecting the lathe to the mains, turning on the lighting of the work area, switching on the pump, which supplies coolant, as well as a button, which is responsible for starting the main drive motor.

Spindle assembly of the machine

Spindle assembly of lathe 1A62 is responsible for fixing the workpiece during its processing, as well as for transmitting to it the rotational motion from the main drive of the device.

List the characteristics of this node:

• diameter of the through hole - 38 mm;
• the maximum diameter of the rod, which is inserted into the spindle assembly, – 36 mm;
• speed of rotation: direct - 11.5–1200 rpm, reverse - 18-1520 rpm;
• the number of set speeds: direct - 21, reverse - 12.

The internal landing cone "Morse" in the spindle site of the lathe 1A62 has category M5.

Schematic and wiring diagrams of the machine 1A62 (press, to increase)

Support and cutter sled 1A62

Support 1A62, as well as similar units of lathes of other models, is responsible for moving the cutting tool relative to the workpiece. The characteristics of this element of the machine directly affect the accuracy of technological operations, as well as the functionality of the equipment.

The support of the lathe 1A62 has the following technical capabilities:

• the longitudinal carriage moves on 650, 900 and 1400 mm, transverse - distance to 280 mm;
• the number of stages of longitudinal and transverse feeds - 35;
• submissions may be made within the following limits: longitudinal - 0.082–1.59 mm / vol, transverse - 0,027–0,522 mm / vol;
• number of parameters to cut the thread: metric - 19 (step from 1 to 12 mm), inches - 20 (step - 2-24 thread / inch), modular - 10 (step - 0.5-3 modules), pitches - 24 (step - 7-95).

Cutting sledges of the lathe 1A62, employees for more precise movement of the cutter head, controlled by several flywheels and control levers. This allows you to achieve the following performance characteristics of this node:

• maximum displacement value - 113 mm;
• according to one division of a limb sledges move on 0,05 mm;
• maximum angle, to which this node can return, is 900, the price of the division of the rotation scale is 10;
• the maximum section of the holder of the cutting tool - 25х25 mm;
• number of turning cutters, which can be installed in the cutter holder at the same time, – 4.

It should be noted, that the 1A62 lathe cutter sled has a mechanical drive.

Lubricating system of the machine

Purpose and device of the rear headstock

The rear headstock of the lathe 1A62 serves for reliable fixing of a detail in case of its processing in the centers and for installation of the cutter at processing of apertures.

This node has the following characteristics:

• the diameter of the quill, in which fix the cutting tool - 70 mm;
• the inner landing cone belongs to the category "Morse 4";
• the value of the maximum displacement - 150 mm, at the same time on one division of a limb the quill moves on 0,1 mm;
• the maximum value of the transverse shear (in both directions) – 15 mm.

Recommendations for the operation of equipment

That work on the lathe 1A62 was effective and allowed to make details, characterized by high accuracy of parameters, it must be installed on a pre-prepared platform, which will withstand its weight and will compensate for the resulting vibration loads.

Once the equipment is installed and configured, you need to run the spindle at maximum speed. When performing this procedure, performed at idle, you should pay attention to that, that does not reduce the oil level.

Finally, the operating modes of the 1A62 lathe should be adjusted, strictly adhering to the requirements, which are set out in the accompanying documentation. According to the reviews of those, who already works on such equipment, it is not difficult to perform such a procedure.