MONTANES by Garward - OcCre

[augie]

Garwood-

 

Congratulations on reaching 1,000 posts.  The first regular member to achieve that milestone and our first Captain.

 

WELL DONE!

[Garward]

Garwood-

 

Congratulations on reaching 1,000 posts.  The first regular member to achieve that milestone and our first Captain.

 

WELL DONE!

 

Hi, Augie, many thanks for a congratulation! First Captain obliges, I will try to correspond to it   .

[lamarvalley]

Wow! A thousand posts. Add to that all the spectacular work on your ships and I wonder if there are maybe several of you under one name.

 

Congratulations Garward!

 

Randy

[riverboat]

Congrats Garward on being the first member to make Capt. A rank well deserved. Your work is outstanding !!

Frank

[themadchemist]

Look at all those stripes, Congrats on making Captain, well deserved. Your advise is always welcomed here.

I also agree that actually making your own tools is very satisfying and can be a big part of this hobby.

[Anja]

Hello (Pryvit) Garward,

 

Congratulations on reaching a 1000 posts and a salute on your promotion to Captain.

 

 

Take care,

 

Anja

[Garward]

Dear colleagues, many thanks for congratulations, I am sincerely touched by your attention !

[Garward]

15.2  The drum-type grinding machin 

 

To creation of this rig I was jogged by requirement for manufacturing (gauging) of laths and plate plainly-parallel sides for various details with accuracy of 0,05-0,1 mm on a thickness. The range of thickness of laths and preparations, and also ready flat details makes from 0,5 to 25-30 mm. I have applied for the first time the given machine tool to polishing of preparations of details of fodder gallery Montanes.

In the beginning there was an idea to use for these purposes the scribing block, for example DH 40 PROXXON, but after the detailed analysis of possibilities and results of application of various scribing blocks I preferred other production engineering. Plancks or preparations are cut on jig save with the free tolerance (0,5-1 mm) that it is easy to make practically on any applied modeller jig save, and then calibrated on the grinding machine with necessary accuracy. This production engineering provides the big accuracy, than machining of laths on the scribing block, especially for thickness of 1-3 mm. 

At designing of the grinding machine I used the materials published on various sites, and also experience of the Polish colleagues on manufacturing and application of similar grinding machines:

http://www.koga.net.pl/forum/viewtopic.php?f=536&t=26938

The general circuit design of a grinding part of the rig simple enough (see also the reference) and does not demand additional explanatories.

Edited April 2, 2013 by Garward

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Machine description

 

 

Grinding knot (all details are made of a steel):

- Drum: length of a working part of 100 mm, diameter of 49 mm, a groove 3,0х7,0 mm for fastening of the emery paper by a wedging method; diameter of the shaft of the drive of 12 mm; 

- Work table: 100х350х10 mm, a working surface it is ground, the back part is fixed in racks on axes in diameter of 6 mm;

- The basis 150х375х10 mm;

- Side posts of the shaft in the thickness of 12 mm, bearings of the drive of the shaft in diameter of 12 mm;

- Cover of side posts in the thickness of 5 mm with an aperture under the vacuum sweeper;

- adjusting screws M 10х1 (one turn – work table moving on 1 mm on length of the screw);

- The positive allowance between a drum and a work table (work piece altitude) is controlled from 0 to 35 mm.

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The drive

 

The direct drive through two half-couplings (landing apertures in diameter of 12 and 19 mm) with a silicone crosswise lining (on the basis of successful experience of application of the analogous drive in the circular saw)  is used.

[Garward]

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The electromotor

 

Asynchronous three-phase general purpose of type the AИР power of 0,55 KW on 915 turns in a minute. It is connected to a network 220 in by means of working and starting capacitors and the magnetic starter, provides thus shaft power about 350 W. The given electromotor is chosen first of all because of a corrected speed and desire to use the direct drive. The Polish colleagues on the basis of long application of similar grinding machines experimentally installed that speed of twirl of a drum of 900 rpm in diameter about 50 mm is optimum wood for polishing (in particular, pears). 

[Garward]

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[Garward]

Abrasive

 

Mainly on a fabric basis, the grain size can be any

Also it is defined proceeding from polishing problems.

[Garward]

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[Garward]

The way of fastening of a skin on a drum also is widely used long ago by jamming by a level in many designs, a difference only in the one who than gets jammed: wooden, plastic or metal level or rubber laying etc. Here to couple of examples of other drums. on which the skin is jammed and keeps very much even decently.

[Garward]

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