Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


Bench grinder. home workshop

Home Workshop

Directory / Home Workshop

Comments on the article Comments on the article

In technical circles, there is often a need for wooden blanks that have a flat, smooth surface. It is not easy to get a sanded board - manual processing is laborious and requires a certain skill. The machine, designed in the laboratory of rocket and space modeling of the TsSYUT of the Kazakh SSR, makes it possible to mechanize the grinding of wooden parts. The design of the machine is clear from the figure. For the drive, an AOL-21-4 brand electric motor with a power of 0,27 W at 1400 rpm was used, but any other motor with similar characteristics can be used.

The working drum is machined on a lathe from steel 3. A groove is selected in it with a three-sided cutter where the emery tape will be attached with a clamping bar. The bar is inserted into the groove, then the drum is balanced. They do it this way: holes are drilled at the ends - thereby removing excess metal until it balances, that is, it rolls, say, along the edges of the rulers evenly, without beats.

Bearing housings are made of steel 3. The mounting holes in them are milled on the machine, making a special mandrel. You can also pick up ready-made cases.

Clutch discs are also machined on a lathe from steel 3. Rubber inserts are inserted into the end grooves on the discs for elastic transmission of torque. One disc is attached to the motor shaft with a locking screw; the other, movable, is seated on the sliding key of the working drum shaft. The disks are pressed against each other by a spring. Its force should be within 5-8 kgf. The pressure can be adjusted by moving the clutch disc along the motor shaft.

When the machine is assembled and adjusted, the drum is wrapped with a belt of sandpaper of the required grit. The length of the tape is equal to the perimeter of the circumference of the drum plus 15 mm for its fastening in the groove.

Bench grinder

Bench grinder
The layout of the machine parts on the bed (click to enlarge): 1 - working drum, 2 - clamping bar, 3 - M6X10 screw. 4 - bearing housing, 5 - spring, 6, 8 - clutch discs, 7 - rubber bushings, 9 - M4X8 locking screw, 10 - motor shaft, 11 - bed support, 12 - bed, 13 - working platform, 14 - axle working platform, 15 - bracket, 16 - regulator housing, 17 - regulator nut, 18 - adjusting bolt with ball head, 19 - M8X15 screw, 20 - adjusting bolt holder, 21 - bearing 204 GOST 8338-57, 22 - protective cover, G - holes for mounting the electric motor (mark in place), I - a place for a magnetic starter, K - connecting a vacuum cleaner

The thickness of the wood layer removed during sanding in one pass depends on the type of skin and is set by the adjusting nut. At the same time, the working platform, turning around a fixed axis, rises or falls.

The machine is connected to the three-phase current network as usual - through a magnetic starter with a push-button switch.

For safety reasons, it is advisable to protect the rotating parts of the machine with a protective cover. It can be made from tin or a thin aluminum sheet. The waste generated during grinding is sucked off by a stationary exhaust device. Where it is not available, you can use a household vacuum cleaner.

Authors: E.Makletsov, P.Treskunov

 We recommend interesting articles Section Home Workshop:

▪ Planer blade sharpening

▪ Vise in clamp

▪ Milling lathe

See other articles Section Home Workshop.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

Cleaning up after your dog on the street will be easier 30.01.2019

Inventors from Israel have designed a device that will allow pet owners to clean up after their pets who "naughty" in public places.

In addition to complying with stringent pet control laws, pet owners will also benefit from the new AshPoopie gadget because they no longer have to deal with smelly bags.

The AshPoopie device is something that looks like a miniature garbage incinerator. It is equipped with a scoop-machine for collecting waste products. At the touch of a button, the device draws in natural waste, burns it and turns it into sterile, clean ash without any unpleasant odor. All that remains is to throw the contents of a special compartment into a trash can or near any tree.

Other interesting news:

▪ Elevator test tower

▪ Energy can be stored in the air

▪ The oldest brain

▪ telephone microscope

▪ Renewable energy may not be enough for everyone

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site for the Builder, home craftsman. Selection of articles

▪ article We didn't wait. Popular expression

▪ article Why does Nothing Else Matters start with an open string pick? Detailed answer

▪ Turner article. Standard instruction on labor protection

▪ article Light quantities. Encyclopedia of radio electronics and electrical engineering

▪ Gerkona article. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024