Collet chuck: device, design, operating principle and clamping action. A simple homemade drill (from junk) Do-it-yourself collet chuck from a bicycle fitting

A collet chuck is a special device used for clamping a tool when performing turning, milling, drilling and other operations related to the processing of metal workpieces on a base. terms of reference(sequence of operations performed, processing technology, attached sketch of the product).

Types and principles of operation of chucks

Collet chucks are mainly used when processing cold-rolled rods or other metal products having an already treated surface.

Structurally, cartridges can be classified according to functionality:

with a fixed mechanism;
with retractable mechanism;
with retractable mechanism.

Each design has its own characteristics. The feeding type is made in the form of a steel sleeve with 3 cuts forming petals that have a springing effect.

Drawing No. 1 of the main spindle collet

Collets type F - clamping the main spindle are used to secure the workpiece.

Drawing No. 2 of the counter-spindle collet

Collets type LN - counter spindle are produced elongated, size E depends on the standard size.

Drawing No. 3 collet type R

Type R – are pull-type collets.

Drawing No. 4 collet type T

Type T – clamping.

Drawing No. 5 collet BF

BF type feed collet - designed for bar feeding.

When installed on the machine, the feed collet is threaded onto the pipe with the help of which it is fed into work area. It is necessary to take into account the design feature - the size and shape of the collet, which mandatory must correspond to the profile of the bar being processed.

In preparation for processing, the rod moves through the petals, which due to design features hold the workpiece tightly. During processing, when feeding the workpiece, the adhesion force between the petals and the product increases due to rotation. The principle of operation of the clamping elements is based on strengthening the adhesion of the petals to the workpiece during rotation of the working mechanism. Bushings with 3 petals are used for processing products up to 3 mm, four – up to 80 mm, six – over 80 mm. Typically, collets have an angle at the apex of the cone equal to 30º.

When processing thin rods, collets equipped with springs are used to increase the clamping force of the jaws. When increasing the diameter of the workpiece being processed, designs are used that are equipped with special inserts selected according to the dimensions of the product. Collet clamps are also used when machining with a drill, cutter or tap. The sleeve is fixed in the cartridge using a nut, and cutting tool directly in the collet. When fixed with a nut, the internal volume of the hole where the workpiece is installed is reduced, thereby increasing the force holding the rod stationary.

Cartridges of this design also have their drawbacks. First of all, the requirement that the shanks of the tool used must match the characteristics of the collets used. At enterprises, the most widely used collets are the ER type, which comprise greatest number in the total volume of tools used.

When executing complex work for the manufacture of products, various collets are used indicating all sizes and technology for performing work operations, but often you have to combine equipment or make the necessary one yourself collet with the required characteristics.

Video review of a lathe collet chuck

How to make your own collet chuck

When making it yourself various products Situations arise when the available equipment does not allow the necessary operations to be performed. It is required to produce a collet chuck that meets the requirements, with the product being manufactured according to the developed sketch.

All work must begin with the preparation of a sketch with the elaboration of all the necessary details. The sketch of the chuck allows you to take into account all the features when making the necessary equipment and clamping mechanism with your own hands.

When making collets with your own hands, you need to consider several features:

the internal diameter of the collet is equal to or less than the minimum diameter of the part;
in a collet, an increase in the internal diameter is possible due to the expansion of the petals;
to increase the production of adjustable collets after setting and raising quality characteristics additional grinding of the conical and guide parts of the collet is necessary;
it must be taken into account that during long work The elasticity of the collet petals is lost, which can result in breakage.

Many home craftsmen are interested in the question of whether a drill can be made with their own hands. Solving this problem is not difficult, and a ready-made homemade device despite the simplicity of its design, it will differ quite high efficiency and functionality.

A homemade drill will not cost much and will not cause any problems during manufacture. It will be useful in many situations, including when performing such technological operations as:

drilling;
drilling holes;
processing of grooves and recesses of various configurations;
engraving;
polishing;
cutting of plastic products;
cutting non-ferrous sheet metal (aluminum, brass, bronze, etc.) up to 1.5 mm thick.

The drill, manufactured according to the instructions below, is distinguished by its compact dimensions, light weight and ease of use. Such a device, made with your own hands at home, is equally successfully used to perform small and quite serious work with products from various materials– metal, wood, plastic, bone, etc. Such a drill is very useful in jewelry making and when repairing small items for various purposes, manufacturing and repair of electrical devices and in many other situations.

What you will need

How to make a drill with your own hands? You can use various options its designs. As the main working element of such a device, it is very convenient to use attachments that were supplied with old-style dental drills. Such an attachment, as a rule, is initially mounted on a flexible shaft, from which it must be removed by unscrewing its spring. From the bottom of the dismantled drill attachment, you need to cut off a not too wide ring, which will act as a nut used to fix the entire device on the plate. In addition, by cutting off such a ring, you will free the end of the shaft on which the gear will be mounted.

For engraver attachments made by hand in the offered design, can be installed various types replaceable tool holders. Such holders, in particular, can be:

straight;
with a lateral arrangement of the tool;
with a curved working head.

Holders are more versatile direct type, which are used in 90% of cases. In situations where the location of the element being processed does not allow the use of straight holders, they turn to curved type nozzles with a side-mounted tool.

When choosing working attachments from an old drill to equip your homemade engraver, keep in mind that they can only be used in conjunction with a tool whose shank diameter is 2.35 mm. At the same time, tools intended for installation in straight-type holders are distinguished by an elongated shank. The shanks of burs installed in corner holders are shorter and have a special groove (slot).

Application homemade nozzles For an engraver, using an old drill has a number of advantages. The main one is that you can purchase such a drill for very little money, since such devices are practically no longer used in modern dentistry. Finding and buying tools to equip such attachments is also not a problem.

Assembling a homemade device

To be able to use the attachment from an old drill to perform minor works with products made of metal, plastic, wood and bone, it is necessary to make a device with which such a nozzle will be driven by a small electric motor of the required power. As a drive motor for a homemade drill, you can use a small, but resourceful and powerful motor from an ordinary hair dryer or an old VCR.

To transmit torque from the electric motor to the shaft of the engraver attachment, you can use plastic gears various sizes. In particular, gearboxes of children's wind-up toys are equipped with similar gears, as well as kinematic diagrams household appliances for various purposes. When choosing such gears, it is very important to ensure that they match each other in number, shape of teeth and outer diameter. To increase the power of the working attachment of a homemade drill, it is necessary to fix a gear of a larger diameter on its shaft, and a gear of a smaller diameter to fix it on the shaft of the drive motor.

The diameters of the mounting holes in the gears that you select to equip the drive mechanism of your homemade drill will most likely not correspond to the dimensions of the electric motor shafts and the working attachment. This problem can be solved quite simply: by drilling mounting holes of the required diameter in the gears. To ensure a tight and reliable fit of the plastic gears on the motor shafts and the engraver attachment, holes should be drilled with a smaller diameter (0.1–0.2 mm) than the dimensions of the shafts themselves.

The drive unit of your homemade drill, consisting of an electric motor, two gears and the tail part of the attachment shaft, will work correctly and without failures if all elements of such a mechanism are securely fixed in the appropriate position. This problem can be solved by the simplest device, made from an aluminum plate 2 mm thick. Such a plate can be given absolutely any configuration (the main thing is that it does not create inconvenience when working with a homemade drill).

IN mounting plate it is necessary to drill two holes, one of which is intended to accommodate the electric motor, and the second is for fixing the working attachment. It is very important to correctly calculate the distance between the centers of such holes, which should be equal to the distance between the axes of the two gears used that are in mesh with each other. If such a distance is calculated and maintained correctly during drilling, then the gears will rotate without jamming or slipping through the teeth while using a homemade drill. If the hole in the mounting plate, in which the working attachment of the drill will be fixed, is made in the shape of an ellipse, you can level out the errors made when performing the calculations described above.

To make the mutual rotation of the drive gears easier, it is necessary to ensure that there is a small gap (0.1–0.2 mm) between their teeth in the meshed state. The strict perpendicularity of the axes of their mounting holes to their side surface helps to avoid horizontal runout of such gears during rotation.

Assembling a homemade drill and combining it with an engraver attachment is carried out in the following sequence:

The tail part of the working nozzle is fixed to the mounting plate using a pre-prepared nut.
The drive motor is secured with two screws connecting its housing to the mounting plate.
After fixing the electric motor and the working attachment on the mounting plate, plastic gears are put on their shafts.
To start using the assembled drill, you need to install the tool holder on the working attachment and connect the drive motor to the power supply.
To make your homemade engraving machine more convenient to use, you can additionally equip it with a switch small size and a connector for power supply.

If, when using such a homemade drill, you are not satisfied with the fact that it can only be used in conjunction with instruments whose shank diameter does not exceed 2.35 mm, then this problem can be solved. To do this, you need to purchase a collet chuck mounted on a mini-drill, the mounting hole in which has a diameter of 2.3 mm. You need to insert the shank of any high-quality bur with a broken working head into it: it is this shank that will be fixed in the clamping device of your homemade drill.

The question is how to make collet clamp with your own hands, relevant for those who are engaged in jewelry making, engraving or manufacturing printed circuit boards and uses such equipment. It is specialists in these categories who most often encounter breakage of the collet clamp, which can be replaced with a new production model or made with their own hands.

There are several options for making a collet chuck with your own hands, each of which differs in certain nuances. However, no matter what method is used to produce homemade clamp, its price will compare favorably with the cost of the serial model.

Homemade collet coupling of the simplest design

The simplest collet, operating on the principle of a coupling, can be made of steel wire with a diameter of 1 mm. It should be borne in mind that the collet of the proposed design is not universal clamping device and can only be used for drills of the same diameter. It is important that the transverse size of the drills used corresponds as closely as possible to the diameter of the output shaft of the drive motor. In addition, it is important to consider that such a collet can only be used when drilling materials with low viscosity.

To manufacture a collet coupling of the proposed design, the following will be required: consumables, fixtures and tools:

a cylindrical metal blank, the diameter of which corresponds to the diameters of the output shaft of the electric motor and drill;
steel wire;
electric soldering iron;
soldering flux.

The process of manufacturing a collet chuck for a microdrill is carried out according to the following algorithm:

The wire is wound onto a blank so that a rigid spring is formed. It is important that the spring coils are located as close to each other as possible.
The finished spring is carefully soldered without removing it from the blank.

At one end, such a collet-coupling is put on the shaft of the drive motor, and the drill used is inserted into the hole in its free end.

The simplest collet can be made with your own hands and in a different design. The design of such a cartridge, the manufacturing cost of which will be very low, consists of two halves fastened with a screw. On the inner surface of each of these halves, cylindrical grooves are machined, which, when tightening the screw, ensure fixation of both the clamp on the drive motor shaft and the tool used. If you decide to make such a collet clamp with your own hands, keep in mind: in order for it to work correctly, you must balance it before using it.

Jaw chuck for micro drills as an alternative to collet chucks

In order not to think about how to make a collet chuck or clamp with your own hands, you can purchase a jaw chuck to equip your microdrill. This clamp is an analogue of the jaw chucks used to complete conventional electric drills, and works on a similar principle. When the movable holder on the body of such a device rotates, the cams with which it is equipped move and thereby provide reliable fixation tool.

A wide variety of inexpensive jaw clamps are available today to equip micro drills. The vast majority of their models are fixed on the drive motor shaft using a threaded hole on the side of the mounting part, into which a screw is screwed. Rotation of the cam clamp cage, depending on the specific model, can be done either manually or using a special key, which is necessarily present in the factory kit of this device.

Purchasing a jaw chuck is good opportunity For little money, you can equip your power tool with a universal clamping device that is easy to use and provides reliable fixation of working attachments. The main thing you should pay attention to when choosing is the material from which the main working elements of the clamp are made. If you choose a chuck whose jaws are made of durable high-carbon steel, it will last much longer and will provide precise fixation of the tool being used.

A mini drill is an indispensable tool when working with printed circuit boards. The store has a wide range of these devices, but it’s easy to make them yourself, because everything you need for this can be found in any home. You will need:

A motor from a car radio (suitable for a hair dryer or children's toy);
Chuck or collet (drill clamp);
Power supply or battery;
Housing made of plastic or metal;
Hot melt adhesive or cold welding;
Drill;
Wires.

First of all, you need to attach a cartridge or collet to the motor shaft. To do this, before buying a collet, measure the motor shaft, they come in two sizes - 1.5 and 2.3 mm, and buy the corresponding part. To avoid unnecessary vibration, secure the cartridge with hot glue. When using cold welding carry out the work very quickly, it hardens almost instantly.

In the prepared case (for example, a plastic cylinder with a lid), cut off the bottom; here you will need to insert a motor. Make holes in the cover for the wires to exit. If this is a body from a lantern, then this ideal option with ready-made output points.

When you have placed the motor with the cartridge in the housing, check whether it sits tightly there, because during operation the slightest vibration will affect the quality. If necessary, apply glue or cold welding.

Solder the output wires to the power supply or battery, be sure to insulate the connection points. For ease of use, you can solder a switch button into one of the wires. On this side, the flashlight housing has another advantage - there is a ready-made hole for the button.

If the drill turns in the wrong direction, reverse the polarity of the wires. In case of strong vibration, check the tightness of the collet or chuck.

Mechanical mini drill + (Video)

If, in addition to electronics, you are also interested in fishing, then in your home you will probably find old fishing rod with a spinning reel. This will serve as the basis for a mechanical mini-drill.

First, remove the spool from the reel; it is secured with a screw on the shaft. Next, measure the length of the shaft and compare it with the length of the chuck hole. If the shaft is longer, cut it to fit the chuck hole. Place the chuck (or collet) onto the shaft using hot glue or cold welding.

For ease of work, all that remains is to redo the reel handle; it is quite long and will interfere with the speed of drilling. Saw off part of the long elbow of the handle, and attach the handle itself to the remaining segment. It is attached quite easily with a riveted metal pin.

Yours mechanical drill ready to go.

Another modification of the mini drill

Let's consider a version of creating a mini-drill with your own hands using an antiperspirant container as a body. To begin, select a motor that is suitable in size; a cassette from a tape recorder is the most best option.

Cut a hole in the body for the button (use a switch from an old carrier as a button), cut off the bottom and make a suitable size outlet for a cartridge or collet in the lid.

Insert the motor into the housing with the holder secured with wires to the cut bottom. If you match the dimensions of the motor to the dimensions of the body, you will not need glue. Put on and screw on the cap.

All that remains is to connect the button and the power supply. After all the circuits are closed, secure the button in the hole made.

DIY materials for a mini drill

There are many alternative options use your inventive skills to create a mini drill with your own hands. The reasons for creating such tools can be:

DVD drive;
Motor from an old electric razor;
Electric toothbrush;
Glue gun handle with suitable motor;
Non-working screwdriver;
Motor washing machine;
Old hairdryer;
Plastic pipe.

All these seemingly unnecessary little things can serve a good purpose and become main detail to create the necessary tool.

Important! When working with a homemade mini drill, try to keep the drill perpendicular work surface. This will protect the drill from breakage and extend the life of your device.

How to make a chuck for a mini drill + (Video)

For a homemade cartridge, you will need a piece of metal or textolite pipe, the diameter of which matches the motor shaft. The length of the homemade bushing should be at least 2 times the length of the shaft and allow the drill to be securely secured.

The sleeve can be secured using screws or hot glue. As a rule, the motor shaft has a diameter of 2-5 mm, and drills for making circuit boards have a smaller diameter. This means that you need to fill the resulting space with filler and achieve alignment between the drill and the shaft.

As a filler, take rosin and pour it into the hole in the bushing. Melt the rosin with a soldering iron and insert the drill. The rosin will harden and hold it securely.

To achieve perfect alignment, melt the rosin again and turn on the power. While the rosin has not hardened, try using tweezers to correct the position of the drill. If necessary, repeat the operation again.

Among the advantages of a mini-drill, it is worth noting its compactness and low cost. In order to save money and not doubt the efficiency and reliability of electrical equipment, modern craftsmen have become adept at making power tools at home. With your own hands, today you can assemble a hand-held micro-electric drill, a high-frequency drill and more. How to make rotary instruments and components for them - read below.

A small electric drill is a must-have for anyone who makes electronic crafts or does delicate decorative work. This machine is ideal for performing small work on wood, plastic and metal, and drilling printed circuit boards.

You can assemble a mini-drill at home from a cartridge, a jar soap bubbles, a motor for rotating the cartridge, a battery.

The motor can be taken from a hair dryer or grinder. An electric motor from a VCR or a motor from an old cassette recorder are also suitable for making crafts.

To make an electric mini drill you need:

Connect the cartridge to the motor. This is best done using cold welding. But you need to work quickly and carefully: the weld quickly hardens and becomes as strong as iron. If it fails, it will not be possible to redo the connection.
Place the cartridge in the jar. For better fixation, the cartridge must be treated with hot glue.
Make a hole in the second base for the switch. It’s better if the switch is small and keyboard-based.

To make a drill with your own hands, you should study the theory and watch a training video

The hand micro drill is ready! All that remains is to solder the wires from the motor and power to the switch, observing the polarity. To power the mini-drill, 9-12v batteries will be enough. Additionally, you can do reverse on a six-pin switch.

DIY collet chuck

A collet (or clamping) chuck for a mini-drill is an adapter device used to clamp drills, which is attached to the output shaft of the motor. The mini-chuck allows you to use drills with a diameter of up to 3 mm. The smallest homemade drill Can work with drills with a diameter of 0.7 mm.

The quality of the drill’s operation depends on the quality of the chuck and the attachment of the drill to the motor.

Therefore, the choice of clamp should be approached with all responsibility. What if quality device I can’t find it, it can be made quite simply. In this case, you will not need to use lathe. To make the clamp you only need an M8 screw and a closed M8 nut.

Making a collet clamp for a mini drill:

We drill a hole with a diameter of 2 mm in the screw head;
We take a hacksaw and apply two axial cuts to the screw body;
In the closed nut, drill a hole with a diameter of 2 mm exactly in the middle;
Using a larger drill, expand the hole in the closed nut to 3.5 mm;
We make a cone out of the nut by connecting it to a regular drill and grinding it using sandpaper.

The collet is ready! Now you can insert a drill of a suitable size into the bolt and screw on the nut. To make using the drill convenient, you can make a collet for each micro-drill. A special drill stand will also help you do quality work.

DIY drill for small jobs

The drill has long ceased to be an exclusively professional dental instrument. Today, a drill with a flexible shaft is actively used to perform small decorative works, grinding, polishing, cutting various products.

You can make a rotary drill with your own hands, similar to a mini-drill.

At the same time, it should be taken into account that for high-quality work of the homemade product you will need a fairly powerful motor. So, an 18V motor from a screwdriver is perfect for powering drills. The easiest way would be to make an engraver from an old blender.

To make a drill you will need:

Disconnect top part blender from the worker;
Using a utility knife, remove the rubber cover on the button and use a screwdriver to unscrew the bolts located under it;
Using a screwdriver, from the side of the power cable, pry up the top cover of the case and carefully remove it;
Remove the circuit connected to the power cable from the blender body;
Remove the plastic part located above the rotator from the housing;
Remove the plastic tip from the electric motor shaft;
Measure the diameter of the shaft with a caliper (if you don’t have one, a ruler will also work for this purpose);
Clean the electric motor housing from oil and degrease its surface using an alcohol wipe;
Place a collet chuck of the appropriate size onto the shaft;
Replace the power button with a push mechanism that controls both turning the device on and off;
Assemble the blender.

Parts for making a drill can be found at a flea market

The hand drill is ready! Such an instrument will be powered through power cable with a fork. You can power the tool with batteries, but then the batteries will have to be changed or charged from time to time.

Do-it-yourself flexible shaft for a drill

If you need to transfer the rotation of the motor of an engraver, drill or bur to an attachment, then you will need a flexible shaft. This device consists of a wire enclosed in flexible armor, twisted in several layers, and

can significantly expand the functionality of a rotary instrument. You can assemble the flexible shaft yourself.

For this you will need:

Brass tube;
Two M4 threaded bushings;
Electrode shaft (diameter 5 mm) with M5 thread;
Adapter with internal thread M5 and external M8 by 0.75;
Mini quick-release chuck;
Clamp made from an M12 bolt drilled along the axis;
Protection for connection.

Assembling the flexible shaft. To do this, insert into brass tube shaft from the electrode and put M4 bushings on both sides of the tube. On one side of the tube we screw an adapter onto the sleeve, and onto it a mini-cartridge. WITH reverse side tubes we place a clamp with which we connect the shaft from the electrode to the flexible one. For convenience, you can sand down the heads of the screws on the clamp. We put a special brass protection on the clamp and secure it with fasteners. We isolate the connection. The flexible shaft is ready! For convenience, a clamp with a plastic handle can be placed on the cartridge side.

How to make a dynamo from an old printer motor

A dynamo is a device that transforms mechanical energy to electric. The operation of the dynamo is based on the principle of electromagnetic induction. That is electric current occurs in a closed circuit of a device when the flux of the magnetic induction vector penetrating the circuit changes over time.

In other words, a dynamo is a simple generator DC.

In everyday life, a dynamo can be used to charge audio and video equipment, a smartphone and other low-power gadgets (for example, fitness bracelets, tablets, a toy robot, etc.). In addition, the device is perfect for powering bicycle headlights, LED strips, hand-held flashlights and other devices powered by single-phase networks.

To assemble the homemade product you will need:

Motor (electric motor) from an inkjet printer;
Belt and gear from the same device;
Handle with comfortable, non-slip grip;
Two small wooden bases;
Four 10,000 µF capacitors;
Diode;
Metal corners and fasteners;
Wires and solder.

Before making a dynamo, it is worth drawing it on paper

Making a dynamo is quite simple. To do this, you need to connect the capacitors in parallel, output the phase from the capacitors through a diode to the electric motor, and connect the zero of the capacitor through a jumper to the zero of the electric motor. Wires for connecting electrical appliances should be routed from the capacitor connected to the diode, observing the polarity. After this, you should place the entire structure on the base, fastening the electric motor to a second wooden plank so that the pulley sticks out of it. On the pulley side, place the gear with the handle and cover them with a belt.

DIY micromotor

Micromotors found wide application in the construction of small flying objects (for example, models of micro-helicopters and airplanes). The micromotor itself is a brushless DC micromotor.

You can make a micromotor from an electromagnet from an old vibration platform mobile phone.

For the rotor axis, you can use a drill with a diameter of 0.29 mm. To make a motor you need to carefully wrap it around a drill copper wire in two passes. The winding length should be a few mm longer electromagnet.

After this you need:

Apply a thin layer to the winding epoxy resin for gluing metals, and put an electromagnet on it;
Make two bushings from fluoroplastic and put them on the electromagnet on both sides;
Place the structure on the guides under the winding and wrap it with copper wire.

The micromotor is ready! All that remains is to install valves on it and connect it to power via a microchip with 5 inputs. Manufacturing Instructions interesting crafts from motors Roman Yursi offers on his channel.

DIY drill (video)

Household electric homemade products are a guarantee of the reliability and durability of power tools. In addition, this is a good opportunity to save money, because, often, the assembly of household tools requires a minimum of parts that can easily be found in everyday life or at the nearest store. Use the instructions presented in the article and assemble rotary household electrical appliances, and enjoy their quality and affordability!

6watt.ru

How to make a collet chuck with your own hands?

The problem of consumption or lack of collet cartridges is especially familiar to jewelers. Specialists involved in the manufacture of printed circuit boards also face this problem.

Collet chucks can be created independently from available materials. However, there are some nuances that will be covered in detail in the article below.

Drill: adapters for drills of different diameters

It should immediately be noted that manufactured on a quick fix the collet will not be dismountable. That is, strictly speaking, removing one drill from it and inserting another will not work. For this reason, the manufacturing method is more suitable for those who need to create large quantity identical holes.

So, to create a homemade collet chuck we will need:

drill;
blank;
steel wire;
soldering flux;
hoop.

Initially, you should wind the steel wire around the blank in the form of a rigid spring (the half rings come as close to each other as possible). Next, the resulting structure must be thoroughly soldered.

It should be remembered that the diameter of the drill must coincide with the diameter of the motor shaft, which will rotate the drill in the future.

Special jaw: a modern replacement for any collet chuck

Today, anyone can easily purchase a special cam for any type of drill. This can be done both in construction boutiques that offer equipment for sale, and on the Internet (at auctions such as Ebay or Amazon).

Such a cam will be screwed onto the threaded connection of the shaft of the rotating device. The more tightly the cam is twisted, the more firmly it compresses the drill placed in it.

The price of such a device does not exceed sixty rubles. Purchasing a cam will forever save you from searching for suitable collets for using various drills.

Of course, it is better to purchase a cam made of high-carbon, durable steel. To tighten it, it is recommended to use a special wrench, which is included in the kit.

Assembling a mini drill

A mini drill is an indispensable tool when working with printed circuit boards. The store has a wide range of these devices, but it’s not difficult to make them yourself, because everything you need for this can be found in any home. You will need:

A motor from a car radio (suitable for a hair dryer or children's toy);
Chuck or collet (drill clamp);
Power supply or battery;
Housing made of plastic or metal;
Hot melt adhesive or cold welding;
Drill;
Wires.

Assembling a mini drill + (Video)

In the prepared case (for example, a plastic cylinder with a lid), cut off the bottom; here you will need to insert a motor. Make holes in the cover for the wires to exit. If this is a flashlight housing, then this is an ideal option with ready-made output points.

Solder the lead wires to the power supply or battery, be sure to insulate the connection points. For ease of use, you can solder a switch button into one of the wires. On this side, the flashlight housing has another advantage - there is a ready-made hole for the button.

If the drill turns in the wrong direction, reverse the polarity of the wires. In case of strong vibration, check the tightness of the collet or chuck.

Mechanical mini drill + (Video)

If, in addition to electronics, you are also interested in fishing, then you probably have an old fishing rod with a spinning reel in your house. This will serve as the basis for a mechanical mini-drill.

Your power drill is ready to go.

Another modification of the mini drill

Let's consider a version of creating a mini-drill with your own hands using an antiperspirant container as a body. To begin, select a motor that is suitable in size; a cassette motor from a tape recorder is the best option.

Cut a hole in the body for the button (use a switch from an old carrier as a button), cut off the bottom and make a suitable size outlet for a cartridge or collet in the lid.

All that remains is to connect the button and the power supply. After all the circuits are closed, secure the button in the hole made.

DIY materials for a mini drill

There are many alternative options for using your inventive abilities to create a mini drill with your own hands. The reasons for creating such tools can be:

DVD drive;
Motor from an old electric razor;
Electric toothbrush;
Glue gun handle with suitable motor;
Non-working screwdriver;
Washing machine motor;
Old hairdryer;
Plastic pipe.

All these seemingly unnecessary little things can serve well and become the main part for creating the necessary tool.

Important! When working with a homemade mini drill, try to keep the drill perpendicular to the work surface. This will protect the drill from breakage and extend the life of your device.

How to make a chuck for a mini drill + (Video)

As a filler, take rosin and pour it into the hole in the bushing. Melt the rosin with a soldering iron and insert the drill. The rosin will harden and hold it securely.

instrument-blog.ru

How to make a mini drill for printed circuit boards with your own hands

The main purpose of a mini drill is to drill printed circuit boards, plastic, wood and some other non-hard materials. Compactness and efficiency have allowed this tool to become one of the main assistants for home handyman. Moreover, it is not at all necessary to buy a ready-made tool - a homemade mini drill copes with its duties no worse than its factory counterpart.

What can be made from

You can make a mini drill with your own hands by using motors from various improvised means.

Device manufacturing algorithm

The collection takes place in 3 stages. Let's take a closer look at each of them.

Making a mini cartridge

In order to assemble a mini drill chuck, you need to purchase a collet - a special mechanism designed for clamping cylindrical objects. Next, you need to connect the motor to the contacts of the future battery, which will power the device during operation.

Collet clamping

If your drill is spinning in the wrong direction, swap the wire contacts.

Finding a drill of the right size is not difficult. Insert the drill into the collet body and clamp tightly. Next, the finished nozzle must be installed on the motor body. The collet should fit tightly onto the motor shaft. Otherwise, you cannot avoid vibration. The chuck for a homemade mini drill is ready.

Attachments for a homemade mini drill can be purchased at any hardware store. Before purchasing, make sure they match the diameter of the collet.

Preparing the body

As a housing for the future device, you can use either an antiperspirant container or a regular hollow tube of a suitable size. If you use a simple hollow tube as a body, you need to cut off the bottom and insert a rubber or other plug in its place. If you are making a device from an antiperspirant body, you need to drill a hole in the lid for the drill to exit.

Connecting the elements

The motor must be installed on the reverse side. If your motor is not the right size, choose another tube. The fit must be very tight to avoid vibration as the shaft rotates. After this, it is enough to tighten the bolts on the collet and connect the resulting device to the electrical network.

One of the main disadvantages of assembling a drill with your own hands from a motor is less power, in comparison with a standard device, and low strength of the drill.

If your work requires a cutter, you can easily make one yourself from an old lighter. To do this, remove the spinning drum from the lighter and place it on a bolt of a suitable size. Secure this with a nut and insert it into the collet hole. The cutter for surface treatment is ready!

If for some reason the cartridge does not fit the size of the cylindrical shaft of the motor or reel, it is necessary to degrease it thoroughly and then place it on hot glue. This will help to obtain a stable and durable structure.

Such a mini drill with purchased attachments can perform minor repairs. technical means, drilling plastic, thin metal and making crafts.