For household chores, the functions of a drill are sufficient, but more precision equipment may be needed to improve quality and productivity. One of the most popular varieties is a DIY mini drilling machine.
Drilling Machine Components
The first step before production is to study the design. To do this, it is recommended to take a drawing of a standard machine and familiarize yourself with its components. It is important to understand the general principle of operation and in the future to determine the optimal scheme of a homemade design.
The main functional purpose is to form various types of holes. Depending on the configuration of the equipment, there may be drawings of vertical drilling, jig boring, radial drilling, filler models. The difference between them lies in the possibility of changing the direction of action of the cutting tool. For domestic needs, a vertical drilling mini-machine is most often made by hand.
Structurally, it should consist of the following elements:
- bed. The supporting part on which the vertical post is attached;
- rack. Designed for the installation of electrical equipment;
- electrical components. They include an electric motor and a mechanism for transmitting torque to the spindle.
Most often, for the production of a homemade drilling machine with their own hands, standard drawings are used, in which the electric motor is replaced with an electric drill. This allows you to reduce the complexity of the work. However, such designs are only designed for light loads.
Before self-production of a mini-machine, you should decide on the type of work performed on wood and metal. The characteristics of the equipment will depend on this.
Homemade drilling machine from a drill
The most popular model is currently a mini drilling machine from a drill. To make it at home, you only need to make a bed and a stand.
In some cases, it can be done without using homemade items. To do this, you need a factory bed and a drill. It is not necessary to draw up drawings for this, however, such a design has one significant drawback - a large backlash. During the execution of work, the cutting tool is displaced relative to the drilling site. This must be taken into account before making a drilling machine.
It is best to use standard blueprints to produce a homemade drilling machine with your own hands. The production technology directly depends on the selected components. But experts recommend adhering to the following rules when choosing a source material, as well as its processing:
- the steering rack can be used for smooth raising and lowering. An alternative is to adapt a mechanical jack;
- support table and stand are made of steel channels and angles. It is important to ensure that there is sufficient weight on the lower part of the structure for maximum stability of the machine during its operation;
- separate control unit. Turning the drill on and off will be inconvenient. Therefore, it is recommended to install a standard switch on the side of the mini drilling machine.
During the execution of work, the maximum accuracy of the mating of the structural elements should be ensured. The angle between the support leg and the table should be 90 degrees. For filler models, the minimum thickness of the metal base plate must be at least 3 mm.
To increase the functionality of the equipment can be done. It provides the ability to move the workpiece relative to the cutting tool. This will allow you to achieve maximum processing accuracy.
Homemade high power machine
If it has unsatisfactory parameters, you can consider other drawings of a similar design. Their difference from the above model is the use of an electric motor as the main power plant.
Making such a design at home will be problematic, since it will take a lot of time and effort. The electric motor can be made from a washing machine. The chuck for fastening the cutting tool is not made by hand, it is taken from an old machine. Additionally, pulleys are required to transmit torque.
In general, the technology remains the same. It is important to correctly calculate the optimal power of the electric motor, as well as provide for the possibility of changing the number of its revolutions. To do this, you can install a gearbox.
As an additional equipment, you can make a vice at home. They will fix the parts to perform precise machining.
The video material shows the exact diagram and drawings for the production of a mini-drilling machine with your own hands:
Examples of drawings and finished machines
Anyone who uses a hand drill knows how difficult it is to hold a straight vertical with your hands. When drilling thick workpieces, there is a risk of breaking the drill. Every time there is a desire to lead the instrument along the guide, but this is not possible.
The second common task is to drill many holes of the same type in one workpiece. Holding a drill in hand, doing this kind of work is long and inconvenient.
Drilling machines of different power have been used in locksmiths since ancient times. But their cost for home acquisition is too high.
In addition, the DIYer does not drill on an industrial scale. Therefore, such a purchase will never pay off.
There are factory-made vertical drilling attachments that can turn a hand drill into a full-fledged drilling machine. Many of them are equipped with coordinate plates and movable vices.
Stand vertical for drilling holes with a drill
This is a really convenient purchase, but the cost of such a machine is comparable to the cost of a drill. Therefore, DIYers often make a homemade drilling machine.
Main design advantages- cheapness and the ability to create a fixture that fits perfectly with your hand drill. If there is an unnecessary enlarger, microscope or other mechanism with a vertical feed of the working unit in the house (shed, garage), the task is simplified.
Homemade stand from an old microscope
It remains only to adapt the drill to the product. If there is no such bonus, the stand is made from scratch.
How to make a machine out of a drill using materials at hand
What should the hand drill guide stand consist of?
Stable bed
Desirably with the ability to install a vise or other device holding the workpiece. At home, it is made of thick chipboard, plywood, or PCB. In the center of the axis of the drill to be installed, it is necessary to leave a hole with a diameter of a couple of centimeters.
Description of the necessary parts of the drilling machine from the drill
Guide vertical post
Here the imagination of the developers is unlimited. This can be a block, a plywood plate, a metal profile, or a pipe.
The main principle in the manufacture is a strict vertical in relation to the support frame. Otherwise, the drill will deviate from the rectilinear movement, spoil the workpiece and break.
Travel mechanism
It can be of a lever type, or use a gear-rack pair. It doesn't really matter which design you choose. It is important to adhere to the principle of availability of materials, otherwise it may turn out that it is cheaper to purchase a finished product.
|
The mechanism of lifting and lowering is made by hands from boards |
The second example of a lifting mechanism made of metal |
Moreover, not only the drill can be supplied to the workpiece. Sometimes it is more convenient to lift the product up to the drill. For example - on compact models.
Hand Drill Bracket
The ideal solution is to use the drill handle seat with a clamp grip. It surrounds the shaft bearing and is ideal for centering the entire structure.
»From the material presented by the author, you will learn how you can independently make a budget drilling machine from an ordinary electric drill.
Every artisan person would like to have a similar machine in his farm, because in comparison with factory counterparts it will cost ten times cheaper, and if all spare parts and components are available, then it is generally free.
The author of this machine is Igor Stasyuk, for which we are very grateful to him, he shared step-by-step photos of the assembly of the machine with the people. The design is quite interesting and at the same time simple. Corners and 4 legs are welded onto the base of a 3 mm metal sheet, a 500 mm rod from a profiled square pipe is welded onto this plate, the slider is made of 2 corners welded into a pipe and put on a lifting column with a gap so that the slider can move up the column and down. The lifting mechanism is driven by a cable stretched from the upper point to the lower one, and on the slider the cable makes several turns.
And so, let's take a close look at what exactly the author needed to assemble the machine? As well as the entire step-by-step process.
Materials (edit)
1.sheet metal 3mm
2.the armature
3.corner
4.cable
5.drill
6.Vise for workpieces
7.bolts, nuts, washers, engravers
8.Drill clamp
9.painting
10.prof square tube
11. drill
Instruments
1.welding machine
2.Bulgarian (angle grinder)
3.drill
4.file
5.vise
6.clamp
7.Vernier caliper
8.rule
9.corner
10.level
11.sandpaper
12.brush
13.hacksaw for metal
14.emery
The process of creating a drilling machine from a drill.
And so, first of all, the author makes the base of the machine from sheet metal 3 mm, cuts out the workpiece using a grinder (angle grinder) And welds 2 corners and 4 legs from a steel rod or reinforcement into the lower part. The length of the legs should be the same, so that there is no skewing of the bed.
Corners and legs are welded.
Slider making! 2 corners are taken and applied to a square profile pipe that will serve as a lifting column and are pulled together with a clamp.
Along the edges, it is seized by welding in order to just make a profit for now, and only then specifically boil a normal seam.
This is actually a blank.
The lifting column is made of a square section pipe with a length of 500 mm.
A bracket with a movable shaft is welded onto the slider body, on which the turns of the cable will be made.
The drilled hole is tapped.
The lifting mechanism handles are made of reinforcement.
There is such a head on the shaft, which will be the base for the handles.
And so, 3 handles are welded for the convenience of raising and lowering the drill through the mechanism.
Installed on a lifting column.
At the end of the cable, such a loop is made.
I hope the lifting principle is clear and without explanation)
A square pipe is welded onto the corner.
Here is actually such a mount for an electric drill turned out.
Then the drill is installed and secured with a clamp of bolts and nuts.
Now let's go back to the lifting mechanism again.
A nut is welded into the upper part of the lifting column and a bolt is screwed into it, a cable is fixed to the bolt itself, and when the bolt is tightened and unscrewed, the cable is stretched to the optimal rate.
It is advisable to pre-lubricate the movable units with grease or lithol.
These small vise can be purchased at the hardware store in the tools section.
All parts were sanded by a master using sandpaper and then painted.
It is not necessary to spend money on a desktop drilling machine, because it is not so difficult to do it yourself. To do this, you will need to purchase, manufacture or use used parts. We will tell you about creating several structures, and you can choose your model for assembly.
Almost every owner who builds or renovates his house or apartment, who repairs household and garden equipment, and various crafts made of metal and wood, has a drill. But for some operations, a drill is not enough: you need special accuracy, you need to drill a hole at right angles in a thick board, or you just want to make your work easier. This will require a machine that can be made on the basis of various drives, machine parts or household appliances, and other available material.
The type of drive is a fundamental difference in the designs of homemade drilling machines. Some of them are made using a drill, mostly electric, others - using motors, most often - from unnecessary household appliances.
Bench Drill Machine
The most common design can be considered a machine made of a manual or electric drill, which can be detachable, so that it can be used outside the machine, and stationary. In the latter case, the switching device can be transferred to the bed for greater convenience.
The main elements of the machine
The main elements of the machine are:
- drill;
- base;
- rack;
- drill mount;
- feed mechanism.
The base or frame can be made from a solid saw cut of hardwood, furniture board or chipboard. Some people prefer a metal plate, channel or Tavr as a base. The bed must be solid to provide structural stability and to absorb vibration during drilling for accurate and accurate holes. The size of the frame made of wood is at least 600x600x30 mm, of steel sheet - 500x500x15 mm. For added stability, the base can be made with eyelets or bolt holes and attached to a workbench.
The rack can be made of timber, round or square in cross-section of a steel pipe. Some craftsmen use the frame of an old photographic enlarger, a substandard school microscope, and other parts with a suitable configuration, strength and weight as a base and stand.
The drill is mounted using clamps or brackets with a hole in the center. The bracket is more reliable and gives more precision when drilling.
Features of the design of the drill feeder
The feed mechanism is needed to move the drill vertically along the rack and can be:
- spring;
- articulated;
- screw jack type construction.
Depending on the type of mechanism adopted, the type and structure of the rack will also differ.
The drawings and photos show the basic designs of bench-top drilling machines that can be made from an electric and hand drill.
With a spring mechanism: 1 - rack; 2 - metal or wooden profile; 3 - slider; 4 - hand drill; 5 - drill clamp; 6 - screws for fastening the clamp; 7 - spring; 8 - square for securing the rack 2 pcs.; 9 - screws; 10 - spring stop; 11 - wing bolt for fastening the stop; 12 - machine base
With spring-lever mechanism
With spring-hinge mechanism: 1 - bed; 2 - washer; 3 - nut М16; 4 - amortization struts 4 pcs.; 5 - plate; 6 - bolt М6х16; 7 - power supply unit; 8 - thrust; 9 - spring; 10 - bolt М8х20 with nut and washers; 11 - drill chuck; 12 - shaft; 13 - cover; 14 - handle; 15 - bolt М8х20; 16 - holder; 17 - rack; 18 - a glass with a bearing; 19 - engine
With hinged springless mechanism
Rack, working on the principle of a screw jack: 1 - bed; 2 - guide groove; 3 - M16 thread; 4 - bushing; 5 - nut welded to the sleeve; 6 - drill; 7 - handle, when rotating, the drill moves up or down
Drilling and milling machine: 1 - machine base; 2 - supports of the lifting table of the table 2 pcs.; 3 - lifting plate; 4 - table lifting handle; 5 - movable drill holder; 6 - additional rack; 7 - screw for fixing the drill holder; 8 - drill clamp; 9 - the main stand; 10 - lead screw; 11 - drum with a Vernier scale
Machine from car jack and drill
The carriage is made of furniture guides
Mini-machine from a decommissioned microscope
Base and stand from an old enlarger
Hand drill machine: 1 - bed; 2 - steel clamps; 3 - grooves for mounting a drill; 4 - drill nut; 5 - drill; 6 - slider; 7 - guide tubes
Video 1. A step-by-step guide for an inexpensive machine. Bed and stand - wooden, the basis of the mechanism - a guide for furniture
Video 2. Drilling machine - a jack from "Zhiguli" and a drill
Video 3. Spring-lever stand for a drill
Video 4. Step-by-step creation of a steel drill stand
Car steering rack machine
A steering rack for a car and a drill are quite massive products, so the bed should also be massive and, preferably, with the ability to fix the machine to a workbench. All elements are performed by welding, since the connection with bolts and screws may not be sufficient.
The bed and the support leg are welded from channels or other suitable rolled products, with a thickness of about 5 mm. The steering rack is attached to the rack, which should be 70-80 mm longer than the rack, through the steering column lugs.
To make the machine more convenient to use, the control of the drill is placed in a separate unit.
Video 5. Drilling machine based on steering rack from "Moskvich"
The order of assembly of drilling table machines:
- preparation of all elements;
- fastening the rack to the bed (check the verticality!);
- assembly of the movement mechanism;
- fastening the mechanism to the rack;
- drill mount (check verticality!).
All fastenings must be made as securely as possible. It is advisable to connect steel one-piece structures by welding. When using any kind of guide, make sure that there is no lateral play during movement.
Advice! To fix the part in which the hole is drilled, the machine can be equipped with a vice.
You can also find ready-made drill stands on sale. When buying, you need to pay attention to the weight of the structure and the size of the working surface. Lightweight (up to 3 kg) and inexpensive (up to 1.5 thousand rubles) racks are suitable for making holes in a thin plywood sheet.
Drilling machine using asynchronous motor
If there is no drill on the farm or it is not desirable to use it in the machine, you can make a design based on an asynchronous motor, for example, from an old washing machine. The scheme and manufacturing process of such a machine are quite complex, so it is better to do it by a master with sufficient experience in turning and milling work, assembling electrical circuits.
The device of a drilling machine with a motor from household appliances
To get acquainted with the design, we present assembly drawings and detailing, as well as the characteristics of assembly units in the specifications.
Details and materials for the manufacture of the machine are shown in the table:
Table 1
| Pos. | Detail | Characteristic | Description |
| 1 | Stanina | Textolite plate, 300x175 mm, δ 16 mm | |
| 2 | Heel | Steel circle, Ø 80 mm | Can be welded |
| 3 | Main rack | Steel circle, Ø 28 mm, L = 430 mm | One end is turned to a length of 20 mm and an M12 thread is cut on it |
| 4 | Spring | L = 100-120 mm | |
| 5 | Sleeve | Steel circle, Ø 45 mm | |
| 6 | Locking screw | M6 with plastic head | |
| 7 | Lead screw | Tr16x2, L = 200 mm | From the clamp |
| 8 | Matrix nut | Tr16x2 | |
| 9 | Steel sheet, δ 5 mm | ||
| 10 | Lead screw bracket | Duralumin sheet, δ 10 mm | |
| 11 | Special nut | M12 | |
| 12 | Lead screw flywheel | Plastic | |
| 13 | Washers | ||
| 14 | Four-lane block of the leading drive pulleys of the V-belt transmission | Dural circle, Ø 69 mm | The change in the number of revolutions of the spindle is carried out by rearranging the drive belt from one groove to another |
| 15 | Electric motor | ||
| 16 | Capacitor bank | ||
| 17 | Dural circle, Ø 98 mm | ||
| 18 | M5 screw with plastic fungus | ||
| 19 | Spindle return spring | L = 86, 8 turns, Ø25, made of wire Ø1.2 | |
| 20 | Dural circle, Ø 76 mm | ||
| 21 | Spindle head | see below | |
| 22 | Duralumin sheet, δ 10 mm | ||
| 23 | Drive belt | Profile 0 | The drive V-belt has a "zero" profile, therefore the grooves of the pulley block have the same profile |
| 24 | Switch | ||
| 25 | Mains cable with plug | ||
| 26 | Tool feed lever | Steel sheet, δ 4 mm | |
| 27 | Removable lever handle | Steel pipe, Ø 12 mm | |
| 28 | Cartridge | Tool holder No. 2 | |
| 29 | Screw | M6 with washer |
The spindle head provides both translational and rotary movement. It is mounted on its own base - a duralumin console.
Details and materials for the manufacture of the spindle head are shown in the table:
table 2
| Pos. | Detail | Characteristic |
| 1 | Steel circle Ø 12 mm | |
| 2 | Steel pipe Ø 28x3 mm | |
| 3 | Bearing 2 pcs. | Radial rolling bearing No. 1000900 |
| 4 | Screw | M6 |
| 5 | Washers-spacers | Bronze |
| 6 | Lever arm | Steel sheet δ 4 mm |
| 7 | Special screw M6 with knurled button | |
| 8 | screw | Low nut M12 |
| 9 | Steel circle Ø 50 mm or pipe Ø 50x11 mm | |
| 10 | Bearing | Radial |
| 11 | Split retaining ring | |
| 12 | Steel circle Ø 20 mm |
Drilling machine assembled
The wiring diagram depends on the type of engine.
A simple electrical diagram for a factory machine 2M112
Homemade machines for drilling printed circuit boards
Mini machine tools for boring boards by radio amateurs also borrow the drive from various low-power devices. At the same time, cutters are used for cropping photos as levers, soldering irons, collet pencils instead of a cartridge. The drilling site is illuminated with LED flashlights - there are enough opportunities for technical creativity.
Simple electrical circuit for controlling an electric motor
Video 7. Mini PCB Drilling Machine
It is not necessary to spend money on a desktop drilling machine, because it is not so difficult to do it yourself. To do this, you will need to purchase, manufacture or use used parts. We will tell you about creating several structures, and you can choose your model for assembly.
Almost every owner who builds or renovates his house or apartment, who repairs household and garden equipment, and various crafts made of metal and wood, has a drill. But for some operations, a drill is not enough: you need special accuracy, you need to drill a hole at right angles in a thick board, or you just want to make your work easier. This will require a machine that can be made on the basis of various drives, machine parts or household appliances, and other available material.
The type of drive is a fundamental difference in the designs of homemade drilling machines. Some of them are made using a drill, mostly electric, others - using motors, most often - from unnecessary household appliances.
Bench Drill Machine
The most common design can be considered a machine made of a manual or electric drill, which can be detachable, so that it can be used outside the machine, and stationary. In the latter case, the switching device can be transferred to the bed for greater convenience.
The main elements of the machine
The main elements of the machine are:
- drill;
- base;
- rack;
- drill mount;
- feed mechanism.
The base or frame can be made from a solid saw cut of hardwood, furniture board or chipboard. Some people prefer a metal plate, channel or Tavr as a base. The bed must be solid to provide structural stability and to absorb vibration during drilling for accurate and accurate holes. The size of the frame made of wood is at least 600x600x30 mm, of steel sheet - 500x500x15 mm. For added stability, the base can be made with eyelets or bolt holes and attached to a workbench.
The rack can be made of timber, round or square in cross-section of a steel pipe. Some craftsmen use the frame of an old photographic enlarger, a substandard school microscope, and other parts with a suitable configuration, strength and weight as a base and stand.
The drill is mounted using clamps or brackets with a hole in the center. The bracket is more reliable and gives more precision when drilling.
Features of the design of the drill feeder
The feed mechanism is needed to move the drill vertically along the rack and can be:
- spring;
- articulated;
- screw jack type construction.
Depending on the type of mechanism adopted, the type and structure of the rack will also differ.
The drawings and photos show the basic designs of bench-top drilling machines that can be made from an electric and hand drill.
With a spring mechanism: 1 - rack; 2 - metal or wooden profile; 3 - slider; 4 - hand drill; 5 - drill clamp; 6 - screws for fastening the clamp; 7 - spring; 8 - square for securing the rack 2 pcs.; 9 - screws; 10 - spring stop; 11 - wing bolt for fastening the stop; 12 - machine base
With spring-lever mechanism
With spring-hinge mechanism: 1 - bed; 2 - washer; 3 - nut М16; 4 - amortization struts 4 pcs.; 5 - plate; 6 - bolt М6х16; 7 - power supply unit; 8 - thrust; 9 - spring; 10 - bolt М8х20 with nut and washers; 11 - drill chuck; 12 - shaft; 13 - cover; 14 - handle; 15 - bolt М8х20; 16 - holder; 17 - rack; 18 - a glass with a bearing; 19 - engine
With hinged springless mechanism
Rack, working on the principle of a screw jack: 1 - bed; 2 - guide groove; 3 - M16 thread; 4 - bushing; 5 - nut welded to the sleeve; 6 - drill; 7 - handle, when rotating, the drill moves up or down
Drilling and milling machine: 1 - machine base; 2 - supports of the lifting table of the table 2 pcs.; 3 - lifting plate; 4 - table lifting handle; 5 - movable drill holder; 6 - additional rack; 7 - screw for fixing the drill holder; 8 - drill clamp; 9 - the main stand; 10 - lead screw; 11 - drum with a Vernier scale
Machine from car jack and drill
The carriage is made of furniture guides
Mini-machine from a decommissioned microscope
Base and stand from an old enlarger
Hand drill machine: 1 - bed; 2 - steel clamps; 3 - grooves for mounting a drill; 4 - drill nut; 5 - drill; 6 - slider; 7 - guide tubes
Video 1. A step-by-step guide for an inexpensive machine. Bed and stand - wooden, the basis of the mechanism - a guide for furniture
Video 2. Drilling machine - a jack from "Zhiguli" and a drill
Video 3. Spring-lever stand for a drill
Video 4. Step-by-step creation of a steel drill stand
Car steering rack machine
A steering rack for a car and a drill are quite massive products, so the bed should also be massive and, preferably, with the ability to fix the machine to a workbench. All elements are performed by welding, since the connection with bolts and screws may not be sufficient.
The bed and the support leg are welded from channels or other suitable rolled products, with a thickness of about 5 mm. The steering rack is attached to the rack, which should be 70-80 mm longer than the rack, through the steering column lugs.
To make the machine more convenient to use, the control of the drill is placed in a separate unit.
Video 5. Drilling machine based on steering rack from "Moskvich"
The order of assembly of drilling table machines:
- preparation of all elements;
- fastening the rack to the bed (check the verticality!);
- assembly of the movement mechanism;
- fastening the mechanism to the rack;
- drill mount (check verticality!).
All fastenings must be made as securely as possible. It is advisable to connect steel one-piece structures by welding. When using any kind of guide, make sure that there is no lateral play during movement.
Advice! To fix the part in which the hole is drilled, the machine can be equipped with a vice.
You can also find ready-made drill stands on sale. When buying, you need to pay attention to the weight of the structure and the size of the working surface. Lightweight (up to 3 kg) and inexpensive (up to 1.5 thousand rubles) racks are suitable for making holes in a thin plywood sheet.
Drilling machine using asynchronous motor
If there is no drill on the farm or it is not desirable to use it in the machine, you can make a design based on an asynchronous motor, for example, from an old washing machine. The scheme and manufacturing process of such a machine are quite complex, so it is better to do it by a master with sufficient experience in turning and milling work, assembling electrical circuits.
The device of a drilling machine with a motor from household appliances
To get acquainted with the design, we present assembly drawings and detailing, as well as the characteristics of assembly units in the specifications.
Details and materials for the manufacture of the machine are shown in the table:
Table 1
| Pos. | Detail | Characteristic | Description |
| 1 | Stanina | Textolite plate, 300x175 mm, δ 16 mm | |
| 2 | Heel | Steel circle, Ø 80 mm | Can be welded |
| 3 | Main rack | Steel circle, Ø 28 mm, L = 430 mm | One end is turned to a length of 20 mm and an M12 thread is cut on it |
| 4 | Spring | L = 100-120 mm | |
| 5 | Sleeve | Steel circle, Ø 45 mm | |
| 6 | Locking screw | M6 with plastic head | |
| 7 | Lead screw | Tr16x2, L = 200 mm | From the clamp |
| 8 | Matrix nut | Tr16x2 | |
| 9 | Steel sheet, δ 5 mm | ||
| 10 | Lead screw bracket | Duralumin sheet, δ 10 mm | |
| 11 | Special nut | M12 | |
| 12 | Lead screw flywheel | Plastic | |
| 13 | Washers | ||
| 14 | Four-lane block of the leading drive pulleys of the V-belt transmission | Dural circle, Ø 69 mm | The change in the number of revolutions of the spindle is carried out by rearranging the drive belt from one groove to another |
| 15 | Electric motor | ||
| 16 | Capacitor bank | ||
| 17 | Dural circle, Ø 98 mm | ||
| 18 | M5 screw with plastic fungus | ||
| 19 | Spindle return spring | L = 86, 8 turns, Ø25, made of wire Ø1.2 | |
| 20 | Dural circle, Ø 76 mm | ||
| 21 | Spindle head | see below | |
| 22 | Duralumin sheet, δ 10 mm | ||
| 23 | Drive belt | Profile 0 | The drive V-belt has a "zero" profile, therefore the grooves of the pulley block have the same profile |
| 24 | Switch | ||
| 25 | Mains cable with plug | ||
| 26 | Tool feed lever | Steel sheet, δ 4 mm | |
| 27 | Removable lever handle | Steel pipe, Ø 12 mm | |
| 28 | Cartridge | Tool holder No. 2 | |
| 29 | Screw | M6 with washer |
The spindle head provides both translational and rotary movement. It is mounted on its own base - a duralumin console.
Details and materials for the manufacture of the spindle head are shown in the table:
table 2
| Pos. | Detail | Characteristic |
| 1 | Steel circle Ø 12 mm | |
| 2 | Steel pipe Ø 28x3 mm | |
| 3 | Bearing 2 pcs. | Radial rolling bearing No. 1000900 |
| 4 | Screw | M6 |
| 5 | Washers-spacers | Bronze |
| 6 | Lever arm | Steel sheet δ 4 mm |
| 7 | Special screw M6 with knurled button | |
| 8 | screw | Low nut M12 |
| 9 | Steel circle Ø 50 mm or pipe Ø 50x11 mm | |
| 10 | Bearing | Radial |
| 11 | Split retaining ring | |
| 12 | Steel circle Ø 20 mm |
Drilling machine assembled
The wiring diagram depends on the type of engine.
A simple electrical diagram for a factory machine 2M112
Homemade machines for drilling printed circuit boards
Mini machine tools for boring boards by radio amateurs also borrow the drive from various low-power devices. At the same time, cutters are used for cropping photos as levers, soldering irons, collet pencils instead of a cartridge. The drilling site is illuminated with LED flashlights - there are enough opportunities for technical creativity.
Simple electrical circuit for controlling an electric motor
Video 7. Mini PCB Drilling Machine