Difference between revisions of "Cylindrical Grinding machine"
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<li style="display: inline-block;"> [[File:oho_trd_JsSM3P3yCao.jpg|thumb|none|200px|DIY tailstock|link=https://www.youtube.com/watch?v=JsSM3P3yCao]] </li> | <li style="display: inline-block;"> [[File:oho_trd_JsSM3P3yCao.jpg|thumb|none|200px|DIY tailstock|link=https://www.youtube.com/watch?v=JsSM3P3yCao]] </li> | ||
</ul></div> | </ul></div> | ||
: See related comments: [[{{TALKPAGENAME}}|Discussion]] | : See related comments: [[{{TALKPAGENAME}}|Discussion]] | ||
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* Technical documentation | * Technical documentation | ||
: Creation of plans, parts lists, assembly instructions | : Creation of plans, parts lists, assembly instructions | ||
: Once all the necessary information was available, the [[#PDF_plans|project plans]] were prepared | : Currently the plans, CAD files, and others, are in their initial phase of preparation | ||
<!-- : Once all the necessary information was available, the [[#PDF_plans|project plans]] were prepared --> | |||
<div style="margin:0px"></div> | <div style="margin:0px"></div> | ||
* Peer-Reviews | * Peer-Reviews | ||
: Peer-Reviews by the community, team members, experts etc. | : Peer-Reviews by the community, team members, experts etc. | ||
: Among some revised and improved aspects of the project, prior to the publication of the plans, we can mention: | : Among some revised and improved aspects of the project, prior to the publication of the plans, we can mention: | ||
:: * | :: * The grinding process with abrasives is not very well known, so the team turned to some theoretical and practical sources, such as [https://www.petersenprecision.com/precision-grinding/creep-feed-form-grinding#:~:text=Creep%20feed%20grinding%2C%20also%20known,cut%20workpieces%20at%20aggressive%20depths. Creep Feed], this being a point that our peers suggested we address based on tests, since there is not much information in the average small machine workshops. | ||
:: * | :: * Even so, the challenge of moving forward with the project was assumed, since, according to the testimony of the peers, it is worth having a small lathe, even if it is of low precision, for applications that are not very demanding, since it is an expensive service and scarce, and as already seen, according to initial estimates, there may be significant savings in cutting tools, as long as the production volume is not critical, with the use of abrasives for roughing. | ||
:: * | :: * Another outstanding point is achieving a minimum of precision in the equipment to be designed, since otherwise it would not be feasible, for which it is expected to work in the order of 0.1 mm, which can be useful in certain processes that will be seen in the discussions. This implies the need to consider aspects such as: | ||
::: - A robust bench | |||
::: - Rails with the best cost-precision ratio | |||
::: - Acquire certain components that, due to their complexity, should not be made in a workshop (chuck, tailstok mandrel, reasonable cost grinding mechanism...) | |||
<div style="margin:20px"></div> | <div style="margin:20px"></div> | ||
==== 5. Manufacturing, tests and improvements ==== | ==== 5. Manufacturing, tests and improvements ==== | ||
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* Workshop <br> Determination of the workshop for manufacturing: | * Workshop <br> Determination of the workshop for manufacturing: | ||
: This project is considered as belonging to the group of Appropriate Technologies, for which it has been developed with the intention of the greatest possible access to processes and materials by the developers, with a basic, moderately equipped workshop, however, it is necessary also have the following facilities: | : This project is considered as belonging to the group of Appropriate Technologies, for which it has been developed with the intention of the greatest possible access to processes and materials by the developers, with a basic, moderately equipped workshop, however, it is necessary also have the following facilities: | ||
:: * Tools and | :: * Tools and instruments for precision works in the order of 0.1 mm or less | ||
:: * | :: * Suitable equipment for cutting and welding thick parts (between 5 and 12 mm) | ||
:: * Adequate spaces, tools and equipment to carry out electrical work, in the case of | :: * Adequate spaces, tools and equipment to carry out electrical work, in the case of the lathe drive motor and its electrical connections | ||
:: * Access to a turning and milling service for some parts that require machining | |||
: Although these conditions do not pose a greater difficulty during manufacturing, it is left to the developer's discretion to choose between carrying out this work or requesting the services of a third party to guarantee a professional work | : Although these conditions do not pose a greater difficulty during manufacturing, it is left to the developer's discretion to choose between carrying out this work or requesting the services of a third party to guarantee a professional work | ||
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** Pieces 2.5 and 2.6, manufactured in 1/2" square bar, available in the workshop | ** Pieces 2.5 and 2.6, manufactured in 1/2" square bar, available in the workshop | ||
** Mobile blade (piece 2.7), with dimensions adjusted according to the leaf spring piece achieved, recovered material | ** Mobile blade (piece 2.7), with dimensions adjusted according to the leaf spring piece achieved, recovered material | ||
:Plans are expected to be updated with these changes, in order to have accurate information regarding the equipment manufactured -> | :Plans are expected to be updated with these changes, in order to have accurate information regarding the equipment manufactured --> | ||
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==== 6. Certification DIN Spec 3105 ==== | ==== 6. Certification DIN Spec 3105 ==== | ||
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Revision as of 01:15, 8 February 2023
Cylindrical Grinding machine Basic Data Category: Lathes Keywords: lathe, grinding machine, roughing, spindle, workshop, speed, feed, depth of cut, bed, tailstock, chuck, turret, grinding wheel License: CC BY-SA 4.0 Organization: OHO Project status: Active Certification status: In process Technical documentation Maturity of the project: prototype
Contains PDF-drawings: Yes CAD files are editable: Yes Assembly instructions are published: Yes Bill of materials is published: Yes
yes yes
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Description
Technical documentation
Project development | |
Based on the DIN 2221 standard, among others, OHO has established a series of stages in which the satisfactory completion of this project was carried out
1 Feasibility study
Operation Compliance Comments Yes For parts that require the use of center point or steady rest, the non-interference of moving parts must be verified. Yes The radius of the part must be less than or equal to the useful width of the abrasive wheel. Yes The abrasive turning mechanism must be able to rotate and move obliquely on the cross slide (tool post grinder). Yes The abrasive turning mechanism must be able to rotate and move obliquely on the cross slide (tool post grinder). Yes Requires the use of smaller diameter accessories, for example, diamond-tipped tools. Manufacturing as OSAT technology is possible?
2 Market analisis and requirements Functional and quantitative requirementsFunctional and quantitative requirements
3 Search & analisis DIY technologiesThe best technical solutions for all parts and components
4 Development and documentationPlans and specifications of all parts and components
5. Manufacturing, tests and improvementsTo date, this project is on hold for manufacturing
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+ General Reviews