Tag Archives: surface grinder

The Advantage of Using CNC Surface Grinder in Auto Parts Processing

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Auto parts (auto spare parts) constitute the overall car of each unit and in the   service of automobile products. Auto part usually requires high precision and high reliability. Manufacturing of auto bearing parts with CNC surface grinder could gain the following advantages:

 

  1. High Precision: two parallel plane, through the disc, the swing arm type feeding NC vertical double end face grinding machine grinding, the precision of the products can reach 0.002 ~ 0.003 mm.

 

  1. High stiffness is the difference between two sides of the plane can control within 0.006 mm dimension consistency control ability.

 

  1. High Efficiency: disc, the swing arm type feeding CNC grinding machine, compared to its efficiency on the basis of the same precision grinding machine is more than 10 times.

 

  1. For many applications, grinding is the preferred process strictly because of the finish it provides. These machines handle the tight tolerances of tenths or millionths without a struggle. Extremely stable machines, they’re made for dealing with super tight tolerances.

 

  1. Temperature changes in and around a machine can create steady fluctuations in component sizes. Although these variations may seem minute, when tolerances are in tenths and millionths, they can spell the difference between a good part and scrap.

 

  1. Easy to Operate: vertical double end face grinding machine, CNC control convenient operation convenient operation compared with horizontal double end face grinding machine fixture design more reasonable, more scientific and more flexible.

 

  1. For successful hard turning, the key components for a machine are that it is rigid, thermally stable, the more can be integrated into the process and the more efficient the operation.

 

  1. Along with vibration stress release, these outstanding structural features assure high strength, maximum damping capability, and longer service life.

 

Just as streamline, CNC surface grinding machine is another very important   revolution in auto parts manufacturing. With these machines, manufactures can   produce both normal and special auto parts in large amount. That shorts the whole design and manufacturing processing of an auto part and also lowers the cost.

 

If you need more information about CNC surface grinders, I recommend a company to you – that’s Tong Yi Machinery Inc.

 

From manual shaping grinding machine, semi-automatic grinding machine, the full-automatic grinding machine of three axes, NC level grinding machine, NC level rotary grinding machine, any product was all researched and developed and designed high-accuracy towards pluralism and humanization, believe that can offer more perfect quality service for every customer. Get more details, please feel free to contact with Tong Yi Machinery.

 

Article Source: Quora

The Way of Choosing the Right Surface Grinder

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The surface grinder you need will depend largely on the material that needs grinding. For instance, if any metal surface needs grinding, the grinding wheel should be made of a highly abrasive material, and it should have numerous cutting niches embedded in it. On the other hand, for grinding a wooden surface, what you need is a lesser abrasive wheel.

 

The Types of Surface Grinder

 

There are two basic types of surface grinders, and they are:

 

  • The Planer-type
  • The Rotary-type

 

In the Planer-type, the grinding wheel remains stationary, while the worktable moves in a back-and-forth motion. This movement is controlled either manually or through some hydraulic drive system. These grinders are selected when overall grinding is required once the machine component has left the foundry.

 

In the Rotary type, the grinding wheel rotates, as does the circular worktable. These rotary surface grinders are selected when the precision machine parts require grinding, before being fitted into its housing. In both the surface grinder types, the safety hazards are well taken care of, and because of this, accidents rarely happen.

 

Things to do After a Surface Grinding Job Is Over

 

After a surface grinding job is over, the entire work station should be cleared of debris. If the work was done on a wooden material, the saw dust may be supplied to those who make composite boards, while the shavings from the metal surface can be sent to steel mills for melting.

 

However, what matters most is the safe clean-up of the work area, as otherwise, someone might get injured from carelessly thrown bits of metal shavings. Also, the surface grinder needs attention after each operation. It should be checked for any flying debris that blocks its air vents or any damage caused to the moving parts.

 

TONG YI Machinery Inc. is the outstanding rotary surface grinder manufacturer in Taiwan. If you need more information about kinds of surface grinding machines, welcome to visit their website and feel free to send inquiry or contact with them.

 

 

Article Source: http://EzineArticles.com/6191258

How Does a Surface Grinder Work?

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Basics

A surface grinder is a device that is used to accurately and intricately remove unneeded layers from a surface in an effort to smooth the target layer. The reason that a surface grinder is used is that it provides a great level of accuracy and detail that is sometimes difficult to achieve by hand. The use of a surface grinder is concentrated in heavy industry, especially in the automotive industry. Surface grinders are used on various types of metal and woods. The surface being worked on is directly related to the blade being used as they are specialized for different surfaces. This is a better option than trying to grind a surface by hand as it is less time consuming.

 

The amount of time it takes to grind a surface depends on the skill of the user and the surface being ground. The best safety guideline with a surface grinder is to take your time. Most accidents happen by using the wrong blade with the wrong material or running the blade on the grinder faster than the speed it was meant to run at. A surface grinder can be used to prepare surfaces such as floors and sheet metal for cars.

 

How It Works

The typical surface grinder has a table that is capable of moving forward and backward as well as side to side. When moving side to side, the table uses hydraulics to move. The machine also has a grinding wheel that rotates and has an adjustable height. The grinding wheel is generally made of diamond, aluminum oxide, silicon carbide or cubic boron nitride. The majority of surface grinders used in the modern era are at least partially automated. The work material is held on the table of a magnetic chuck and sometimes an electro-magnetic chuck depending on the specific machine.

 

What a Surface Grinder Does To Material

A surface grinder produces a high level of heat which will create stress on the material. After being run through a surface grinder, a material will be more apt to breakage or fracture than before it was run through the machine. A material can also lose its magnetic properties if its temperature is raised too high.

 

Tong Yi Machinery Inc. is the professional surface grinders manufacturer in Taiwan. Kinds of surface grinding machine series all can be provided by them. If you need further details about surface grinders, welcome to browse Tong Yi’s website or contact with them via email or telephone!

 

Article Source: http://www.ehow.com/how-does_5315080_surface-grinder-work.html

How to Use a Surface Grinding Machine

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A surface grinding machine is used to produce a smooth accurate finish on either metallic or nonmetallic materials. It uses a round rotating abrasive grinding wheel that remains stationary (but rotating) while the feed table (with work attached) is run in a reciprocating motion (left and right) under the grinding wheel. The specific amount of material to remove is determined by lightly touching off the work with the grinding wheel rotating and feeding the grinding head down a certain distance.

WARNING: If a grinding wheel is permitted to exceed the maximum safe speed, it may disintegrate and cause injury to the operator and damage to the grinding machine!

On a Manual Surface Grinder, you will then need to run the table left and right with one hand wheel while cross-feeding with the other hand wheel.

On an Automatic Surface Grinder, you will then be able to run the table left and right automatically while cross-feeding automatically. All you need to do is set the down feed and stroke.

Typically surface grinders can grind within .0001 – .0002 but not all surface grinders are created equal. The less expensive models may not hold up to tool room accuracies but could be used effectively to sharpen punches, and dies or do repair shop work. The more expensive models will use higher-quality spindle bearings and other components and will be better able to attain tool room accuracies.

To use the surface grinding machines, you must select the correct grinding wheel for the work to be ground. There are different wheels that are best suited for grinding:

  • High-Speed Steel RC 50-68
  • 400 Series Stainless
  • Soft Steels RC 30-45
  • 300 Series Stainless
  • Cast Iron: Ductile & Gray
  • Nonferrous Alloys

In each of the categories above you will need to determine wheel type by deciding if you need heavy (> .004), moderate (.002-.004), or light stock (.001) removal characteristics. Also, you will need to select a Grit size. 46 grit for general purpose, 60 grit for commercial finish, 80 grit for fine finish, and 120 grit for very fine finishes.

After selecting the correct wheel for your job, visually inspect the wheel for any damage or cracks. If no damage is found install the wheel on your surface grinder, tightening the left-hand spindle nut carefully with a spanner wrench. Make sure you replace the guard covering the wheel, put safety glasses on then turn the spindle on. Step away and let the spindle run for 1 minute to make sure the grinding wheel is running smoothly.

Once the grinding wheel has been dressed it is not recommended to turn the spindle off because turning off the spindle will require the wheel to be dressed again for some concentricity will be lost.

You are now ready to dress the wheel using a single-point diamond dressing tool that is placed and held down by the magnetic chuck. A small amount of grinding wheel should be dressed off of the diameter in order to make the wheel run concentric. Place the diamond dresser under the rotating wheel and bring down the grinding head carefully so it just touches the dresser. Sweep the diamond dresser across the rotating wheel using the cross feed (y-axis). Feed the grinding head down .002 then sweep the diamond dresser across the rotating wheel. Repeat until the grinding wheel face is clean and running concentric.

After the wheel is dressed and running concentric you will then be ready to gently touch off on the work (using the spark or layout fluid method). Next, set your “zero” on the down feed handle, raise the head slightly to clear work then the cross feed handle to distance the work from the grinding wheel. Next, feed the grinding head down a distance not more than .005. The amount of material being removed will determine how far you can feed the cross-feed per pass.

The benefits of surface grinding are:

  • You can grind very hard or abrasive materials
  • The high degree of dimensional accuracy
  • Produces surface textures of very high finish
  • Tooling is less expensive
  • Work holding is easier because of the magnetic chuck
  • Can be done automatically

In short, you will most likely need a surface grinder if you need to provide precision ground surfaces, either for a high surface finish or to attain critical dimensions.

Article Source: http://www.americanmachinetools.com/how_to_use_a_surface_grinder.htm

How to Choose the Right Surface Grinder

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An electrically operated high-speed hand held surface grinder is usually employed in grinding the rough surfaces of metal or wooden objects till they become smooth or look ‘polished’. The desired results are achieved because of the grinding wheel, which is attached to the spindle of the grinder. And so, the surface grinder you need will depend largely on the material that needs grinding. For instance, if any metal surface needs grinding, the grinding wheel should be made of a highly abrasive material, and it should have numerous cutting niches embedded in it. On the other hand, for grinding a wooden surface, what you need is a less abrasive wheel.

Surface Grinder – The Types

There are two basic types of surface grinders, and they are:

  • The Planer-type
  • The Rotary-type

In the Planer type, the grinding wheel remains stationary, while the worktable moves in a back-and-forth motion. This movement is controlled either manually or through some hydraulic drive system. These grinders are selected when overall grinding is required once the machine component has left the foundry.

In the Rotary type, the grinding wheel rotates, as does the circular worktable. These grinders are selected when the precision machine parts require grinding before being fitted into its housing. In both the surface grinder types, the safety hazards are well taken care of, and because of this, accidents rarely happen.

Hand Held Surface Grinders
Hand-held surface grinders are mostly used by carpenters or machine shop assistants. However they come with several risks for the user. First of all, flying debris loosened by the grinder can hit the user with a tremendous force, and this can of course cause physical injury. In rare instances, the user may also be blinded if any flying trash hits the eye. Therefore, people who use these grinders must wear a suitable uniform to protect them from the debris. It is also essential to wear goggles for eye safety.

Things to do After a Surface Grinding Job Is Over
After a surface grinding job is over, the entire workstation should be cleared of debris. If the work was done on a wooden material, the sawdust may be supplied to those who make composite boards, while the shavings from the metal surface can be sent to steel mills for melting.

However, what matters most is the safe clean-up of the work area, as otherwise, someone might get injured from carelessly thrown bits of metal shavings. Also, the surface grinder needs attention after each operation. It should be checked for any flying debris that blocks its air vents or any damage caused to the moving parts.

Article Source: http://EzineArticles.com/?expert=Kridsda_Bookaew

Article Source: http://EzineArticles.com/6191258