Snvsh desktop drilling machine description, characteristics, diagrams. Snvsh desktop drilling machine description, characteristics, schemes Drilling machine ns sh documentation

Information about the manufacturer of the table drilling machine SNVSH

Drilling desktop machine SNVSH-1, SNVSH-2 is produced by the enterprise Rostov plant of small-sized machine tools MAGSO founded in 1956.

Other manufacturers of the SNVSh-1 machine: Novocherkassk Electromechanical Plant NEMZ, Kasimov Mechanical Plant No. 8, By Kit Leningrad.

SNVSh desktop drilling machine. Purpose and scope

In 1985, the SNVSh-1 machine replaced the NS-Sh model drilling bench, which had been produced since 1978.

The machine is designed for drilling holes and cutting threads in small parts made of cast iron, steel, non-ferrous alloys and non-metallic materials under conditions industrial enterprises, repair shops and household workshops.

Simplicity of a design provides ease of management, reliability and durability of machines.

The main parameters of the drilling machine SNVSH:

Maximum drilling diameter: Ø12 mm
Maximum drilling depth: 100 mm
Spindle axis to column distance (overhang): 160 mm
Motor power: 0.6 kW
Machine weight: 85 kg

Spindle VSN machine receives 3 rotation speeds from three-stage drive pulleys, which provides a choice of cutting speeds - 450, 1200, 1800 rpm.

Spindle end- outer Morse taper KM2, designation B18 according to GOST 9953 (Shortened tool cones) - shortened cone: D = 17.780 mm, cone length 37.0 mm.

A shortened cone B18 corresponds to a drilling three-jaw chuck of the 16th standard size according to GOST 8522 (Three-jaw drilling chucks) with a clamping range of 3 to 16 mm.

An example of a symbol for a 3-jaw drill chuck, size 16, with a B18 taper connection:

Cartridge 16-B18 GOST 8522-79

Morse taper tool shortened

Tool cone - Morse cone - one of the most widely used tool mounts. Introduced by Stephen A. Morse around 1864.

Morse taper is divided into eight sizes- KM0 to KM7 (English: MT0-MT7, German: MK0-MK7).

Standards for Morse taper: GOST 25557 (Tool cones. Main dimensions), ISO 296, DIN 228. Cones made according to inch and metric standards are interchangeable in everything except the shank thread.

For many applications, the length of the Morse taper has proven to be excessive. Therefore, a standard was introduced for nine standard sizes of short Morse tapers (B7, B10, B12, B16, B18, B22, B24, B32, B45), these dimensions are obtained by removing the thicker part of the cone. The number in the designation of the short cone is the diameter of the thick part of the cone in mm.

Russian standard for shortened cones GOST 9953 Tool cones are shortened.

Russian standard for drill chucks GOST 8522 Three-jaw drill chucks.

B7- Morse taper KM0, D = 7.067 mm;
B10- Morse taper KM1, D = 10.094 mm. Cartridge 4-B10(0.5÷4 mm);
B12- Morse taper KM1, D = 12.065 mm. Cartridge 6-B12(0.5÷6 mm), Cartridge 8-B12(1÷8 mm);
B16- Morse taper KM2, D = 15.733 mm. Cartridge 10-B16(1÷10 mm), Cartridge 13-B16(1÷13 mm);
B18- Morse taper KM2, D = 17.780 mm. Cartridge 16-B18(3÷16 mm);
B22- Morse taper KM3, D = 21.793 mm. Cartridge 20-B22(5÷20 mm);
B24- Morse taper KM3, D = 23.825 mm;
B32- Morse taper KM4, D = 31.267 mm;
B45- Morse taper KM5, D = 44.399 mm.

Where D- diameter of the cone in the main plane.

Reading the depth of drilling is made on a flat scale or stop.

The original design of the belt drive tension allows you to quickly change the position of the belt on the pulleys to obtain the desired cutting speed.

Using a pedestal to install the machine makes it possible to drill the ends of long parts, such as shafts. Shaft diameter - up to one hundred and twenty millimeters, length - up to a thousand millimeters.

Drilling machine SNBS allows you to perform the following operations:

drilling
countersinking
deployment
reaming
threading

The SNVSH drilling machine can be equipped with additional accessories to expand its capabilities:

Vise- indispensable for complex types of processing, such as small parts or drilling at an angle
cross table- indispensable for precise coordinate drilling or light milling
Turret
Cooling unit- indispensable for long drilling

General view of the drilling desktop machine SNVSH

Photo of the drilling machine SNVSH Kasimov Mechanical Plant No. 8

Desktop drilling machine SNVSh. Video.

Technical characteristics of the machine SNVSh

Parameter name	2m112	STNS
Main parameters of the machine
Maximum drilling diameter, mm	12	12
The smallest and largest distance from the end of the spindle to the table	0...400	20..420
Distance from the axis of the vertical spindle to the rack guides (outreach), mm	190	160
Desktop
Table working surface width, mm	250	250 x 250
Number of T-slots	3	3
Spindle
The greatest movement of a spindle head, mm
Spindle sleeve stroke, mm	100	100
Spindle speed, rpm	450, 800, 1400, 2500, 4500	720, 1400, 2000
Number of spindle speeds	5	3
Spindle taper	Morse B18	Morse B18
Drive unit
Main drive electric motor, kW	0,55	0,6
Dimensions and weight of the machine
Machine dimensions (length width height), mm	795 x 370 x 950	660 x 360 x 750
Machine weight, kg	120	85

This equipment is a development of the Odessa Special Design Bureau, the production was launched at several enterprises former USSR in the middle of the last century. On the basis of the main model, a number of modifications of the NS-12A, NS-12B, NS-12M were created, with a slight difference in characteristics and configuration. Drilling machine NS-12 performs drilling of holes and threading in parts made of steel, cast iron, non-ferrous metals and alloys, in non-metallic materials. It belongs to the group of desktop machines.

Machine description

It has small dimensions and is installed on a workbench, allows you to process small parts. It is used to equip repair production units, educational and home workshops.

Despite its small size and low performance, it is lightweight and easy to use. Simplicity of a design does accessible maintenance and repair.

The design of the drilling machine NS-12

The machine is convenient to operate, and a simple device increases reliability and durability.

The NS-12 machine has five working spindle speeds. The revolutions of rotation are changed using a belt drive. The belt is quickly rearranged on multi-stage pulleys from one diameter to another. Thanks to the original design of the tension mechanism, craftsmen can easily get desired speed cutting.

Specifications drilling machine NS-12A make it possible to perform the following operations:

drilling and reaming holes;
countersink and countersink;
unroll holes;
cut the internal thread.

The main cutting movement is the rotation of the tool and the vertical feed of the spindle.

The largest drilling diameter in a steel part, the largest stroke and overhang of the spindle are the basic parameters of the machine. Equipment descriptions are also easy to find on the Internet or from experienced craftsmen. Any equipment of this type has its own passport, which contains all the technical and specific instructions.

Machine passport

The device of the machine NS-12A

The main structural elements of the desktop drilling machine are:

base;
Column;
trunk with spindle group;
electric drive;
governing bodies.

The cast-iron base serves as a support base, and the elements of the electric drive are placed inside the massive plate, including the switch housing, which provides illumination of the working area and a step-down transformer.

A push-button station for turning on the equipment is placed on the front panel of the base. In the upper part of the base there is a working table for installing, fixing fixtures and parts.

A chute is made along the perimeter contour to accumulate the cooling liquid used in processing. The gutter has a drain hole closed with a screw plug. In the case of supply from the central line, a nipple with a rubber hose is connected to the hole.

The column is fixed on the base plate with a special shoe and bolted. When it is necessary to rotate the column around the axis, the bolts are released, the column together with the upper part is set to the required position and fixed.

The trunk consists of a cast-iron body, in which a spindle assembly, a movement mechanism, a belt tensioner and a local lighting lamp are mounted.

Behind the body, an electric motor is suspended on a sub-engine plate.

He will be able to move longitudinally along the guides. The mobility of the engine is necessary to reduce the tension of the drive belt when adjusting the spindle speed. When the belt is placed in the groove of the pulley, the motor returns to its place and the required tension is provided.

Rise and lowering of the trunk along the column is provided by rack and pinion. The gear rack is firmly fixed on the column, and the drive gear is in the trunk. The vertical movement is controlled manually through the handle, which has a rigid connection with the gear. The second lever is located near the column and fixes the position on the column, this happens at the required height above the table.

The spindle is mounted on the cantilever part of the trunk in the quill of the machine, movable in the vertical direction.

The movement of the quill, which transmits the feed movement to the spindle, is performed by a handle located on the side of the trunk. The spindle of the NS-12A drilling machine is placed in bearings with precision angular contact bearings, they provide movement accuracy and smooth running. The control pulley is made in the form of a five-stage design and is installed in bearings with radial bearings.

To control the depth of drilling blind holes allows the use of a special hard stop and a flat scale on the body.

Machine control principle

Before putting the machine into operation, you need to make sure that grounding is present.

The control of the machine is quite simple:

to turn it on, you must press the "Start" button on the button starter panel;
the inclusion is accompanied by the start of the electric motor;
the machine is ready to work, and to stop the work, press the "Stop" button. The power will turn off and the motor will stop. If necessary, local lighting is switched on by turning the package switch toggle switch.

Unit control

The list of controls for the NS-12A drilling machine:

power button "Start";
shutdown button "Stop";
handle for turning on the lighting;
lever for vertical movement of the trunk along the column;
tensioner clamps;
handle for controlling the movement of the quill for manual feed;
handle for fixing the position of the trunk.

The handle fixing the position of the trunk

local lighting

The machine is completed with the necessary equipment for connecting local lighting. The place for installation is selected depending on the place of installation.

Most often, craftsmen choose a workbench or a monolithic table as a place for mounting the NS-12A drilling machine. Then the mounting bracket with the local lighting transformer is installed near the machine on the same base. When placing the equipment against a wall, it is convenient to place a mount on it.

The presented model of the drilling machine is considered reliable equipment with a clear control algorithm. The model is highly maintainable and does not require high maintenance costs.

A popular and budget model will be an ideal assistant in the following areas:

auto repair shop;
mini workshop;
technical school laboratory.

Video: Drilling machine NS-12A

NS-12, the design of which was developed by engineers of the Special Design Bureau No. 3 in Odessa, was produced in the 1950s-1970s. several enterprises of the USSR, a number of trade and technical schools. Along with the NS-12 model, a number of its modified versions (NS-12A, NS-12B, NS-12M) were also produced, the design and equipment of which differed slightly from the characteristics of the basic equipment.

Purpose of the machine model NS-12

Models NS-12 belongs to the category of desktop equipment. This suggests that it is suitable for processing small parts. Appropriate dimensions and low productivity of the machine make it possible to use it in repair shops. manufacturing enterprises and small workshops, specialized classes of technical and general educational educational institutions. You can often find such a device in the equipment of home workshops.

Long service life, ease of use, Maintenance and repair of the NS-12 machine are provided by the simplicity of its design. When drilling blind holes on such a machine, their depth can be adjusted on a flat scale or a special stop.

The use of a multi-stage belt drive in a drilling machine makes it possible to obtain five various speeds spindle assembly rotation. What is important, the belt is rearranged to a pulley of a different diameter simply and quickly thanks to a special belt tensioning mechanism.

The technical capabilities of the drilling machine model NS-12 allow you to perform various types of processing of workpieces made of cast iron, steel, non-ferrous metals and non-metallic materials:

drilling and reaming holes;
deployment;
reaming;
cutting internal thread.

Equipment design elements

The design of the drilling machine NS-12 includes the following elements:

base plate;
column;
a trunk on which a spindle group of equipment is mounted;
electrical equipment.

The column, which is installed on the base plate, is attached to it using a special shoe. Along the perimeter of the base plate there is a special chute for collecting coolant. From the gutter, the liquid is drained through the bottom hole, which is closed with a screw plug. In the event that the coolant is supplied from a centralized network, a nipple is screwed into the drain hole, to which a rubber hose is connected.

The inside of the massive base plate is used to house the step-down transformer and package switch housing, which is responsible for lighting the treatment area. A push-button station is mounted on the front of the plate, with the help of which the main electric motor of the machine is turned on.

The vertical movement of the trunk along the column is carried out by means of a rack and pinion gear, consisting of a rack mounted on the column and a gear mounted in the trunk. This movement is controlled by a handle rigidly connected to the gear. Among the controls of the drilling machine there is another handle, with which the trunk is fixed at the required height.

The spindle assembly is mounted on the trunk, there is also a plate with an electric motor fixed to it and a mechanism for tensioning the drive belts. The spindle itself is installed in the sleeve (quill) of the machine, which can move in the vertical direction.

The movement of the sleeve, which informs the spindle of the feed movement, is controlled by means of a handle located on the side of the trunk. Smooth and accurate rotation of the spindle is ensured by its installation in supports with precision angular contact bearings. The pulley of the spindle assembly of the drilling machine, which is a five-stage design, is also mounted on two supports with radial bearings.

The electric motor of the machine is mounted on a special plate and can move along its guides. This design allows the drive belt to quickly loosen when it needs to be transferred to another pulley, as well as quickly tension it when it is necessary to start processing.

How the kinematic diagram of the machine works

The electric motor of the drilling machine rotates a five-stage pulley fixed on its shaft, the torque from which is transmitted by means of a V-belt to the spindle assembly pulley. The vertical movement of the sleeve and, accordingly, the spindle assembly is carried out due to the rack and pinion fixed on it, which is rigidly connected to the corresponding control handle.

The trunk of the NS-12 drilling machine moves in the vertical direction also due to the rack and pinion gear, the action of which was described above. In the shoe, mounted on the base plate, there is a special clamp, after loosening which you can rotate the column along with the trunk around its axis.

To ensure the safety of the operator, a cast or elongated welded casing is mounted on the belt drive of the drilling machine.

What does the electrical circuit of the device include

Such a characteristic of the machine of this model as ease of use and repair is determined, among other things, by the simplicity of the electrical circuit. The elements of the electrical circuit of the NS-12 drilling machine, which are responsible for controlling the equipment, are the "Start" button, when pressed, the drive motor starts, and the "Stop" button, with which the electric motor is turned off.

The characteristics of the drilling machine provide for the presence of local lighting, which is turned on when the handle of the corresponding package switch is turned. The operation of the local lighting system requires the use of a step-down transformer, which is mounted in the immediate vicinity of the machine.

The desktop drilling machine NS-12 was developed by the Vilnius machine-tool plant "Zalgiris". It differs from similar equipment in its simple layout, reliability and sufficiently accurate material processing parameters.

Machine design

This model is designed to form holes in small workpieces from various materials: steel, wood, polymers. If there is a tap, threads can be cut. It has found application in a complete set of repair shops, is widely popular among home craftsmen.

The design consists of a desktop, which acts as a base. On its surface there are polished T-shaped grooves for fixing the workpiece. A vertical column is installed on the frame, in the upper part of which electrical equipment, a spindle head and shafts for switching the number of revolutions are mounted.

The passport describes in detail the design features of the desktop machine NS-12. They are as follows:

use of cast iron cases. This ensures a long period of maintenance-free operation of the equipment;
convenient system for changing the spindle speed. To do this, pulleys of various diameters are installed on the shaft of the headstock and the electric motor. The drive is carried out using a belt drive;
processing accuracy provides a report of the depth of drilling on the stop or on a flat scale.

The original belt drive tensioning system makes it possible to change gears. But for this it is necessary to wait for the complete stop of the electric motor. To drive the headstock on the NS-12A machine, you can install flat and toothed belts.

During work on the equipment, a protective cover is installed on the shaft with spindle pulleys without fail. This will prevent dangerous situations from occurring.

Specifications

To get acquainted with the exact technical parameters of the machine model NS-12, it is necessary to study the equipment passport. It indicates not only the layout of the elements and characteristics, but also gives recommendations for operation.

The mass of the machine NS-12A 121 kg is enough to dampen the vibrations that inevitably appear during operation. Its dimensions are 77 * 46.5 * 70 cm and allow you to install equipment on small area desktop. The motor power is relatively small - 0.65 kW. However, unlike similar models, it is designed to be connected to a single-phase 220 V network, which makes it possible to use the drilling unit at home.

But for a full analysis of the capabilities of a desktop machine, you should carefully study the technical data sheet. Here are the main characteristics of the equipment:

the maximum allowable drilling diameter is 12 mm;
distance from the end of the spindle to the surface of the desktop - from 2 to 42 cm;
spindle overhang - up to 8.5 cm;
desktop dimensions - 36 * 36 cm;
number of T-slots for fixing the workpiece - 3 pcs.;
maximum displacement of the spindle head - 30 cm;
sleeve travel - up to 10 cm;
speed options - from 450 to 4500 rpm;
number of speeds - 5.

These parameters allow drilling and threading with dies with a fairly high accuracy. Before starting work on the NS-12A machine, you need to familiarize yourself with the passport, study the safety rules and the methodology for carrying out repair and preventive measures.