Optimize your sanding process using the right dressing and dressing tools | Modern machine shop

Choosing the right tool and using it correctly can have a positive impact on the grinding process. However, it is useful to know how to select tools and solutions for dressing traditional grinding wheels. #base
Production grinding relies on multiple components working together to achieve the desired results. Whether the result is size, shape, finish or a combination of these, the system works best when all components are optimized and used correctly.
The focus is on the abrasive and using the best grinding wheel, but the system is more than just a grinding wheel. Coolant also has a major impact on grinding operations. However, the most overlooked component of a grinding system is the dressing tool.
Typically, premium abrasives have a higher installation cost and are expected to perform best when dressing and finishing using the least expensive tools. It’s similar to putting regular fuel in a high-performance car.
Choosing the right tool and using it correctly can have a positive impact on the grinding process.
Regardless of whether rotary or fixed tooling is used, in many systems dressing tools are almost completely forgotten until a finish, shape or geometry issue arises and is investigated.
Choosing the right tool and using it correctly can have a positive impact on the grinding process. However, it is useful to know how to select tools and solutions for dressing traditional grinding wheels.
Trimming and pruning are often considered the same process, and the terms are sometimes used interchangeably when discussing pruning and/or pruning processes. This is possible because, with the exception of some resin or metal bonded products that require trimming the wheel offline and then reinstalling and trimming it, these two operations are usually performed simultaneously.
Dressing operations involve the shape or profile of the grinding wheel. When dressing a new grinding wheel, the grinding surface is changed so that the abrasive product can perform the intended function. Regular dressing during grinding corrects the wheel profile and compensates for loss of shape that occurs when the wheel is damaged during normal use. A properly threaded grinding wheel will give the correct profile to the part being sanded and will also ensure that the geometry and dimensions of the mold are within specifications and ready for use.
Although the term dressing is often used to describe dressing and dressing, dressing operations only restore or change the condition of the grinding wheel surface. The grinding wheel is treated to restore or change its ability to remove stock or produce a specific finish. If a grinding wheel is used to remove a workpiece, the grinding surface is machined to expose new sharp cutting points, allowing the grinding wheel to cut at a higher material removal rate. However, the trade-off is that the end result may not be favorable. The wheel in this case is considered “open”.
If a grinding wheel is being used to achieve a specific finish, the grinding surface will be sanded to dull or dull the cutting edge, allowing the wheel to rub more and achieve the desired finish. The trade-off here is that although the finish is good, the material removal rate will be much lower. In this case, the wheel is said to be “closed.”
In its simplest sense, a grinding wheel is a stone. To shape a stone or create certain surface conditions on it, a harder stone is needed. Since diamond is the hardest material known, it is used for dressing and dressing grinding wheels.
The first consideration helps determine the carat size of the diamond tool required. Whether the tool has a single or multi-diamond design, knowing the size, bond and type of abrasive of the wheel being cut and machined will help determine what size diamond is needed.
Although diamond tools are harder than the grinding wheels used, the abrasive particles will eat away at the diamond over time. The amount of diamond wear depends on the time the diamond is in contact with the grinding wheel, so larger grinding wheels require larger diamonds.
This table (left) shows the recommended overall diamond size required, whether it be a single diamond or multiple diamonds, depending on the size of the circle.
Just as there are several different wheel profiles that can be made into treads, there are also several different types of fastening tools that can be used to create or repair them. Knowing which available tools are most suitable or functional will help narrow down your choices. The second consideration is based on the desired wheel shape or profile.
Fixed tools can be as simple as a diamond on a stick, such as a single point tool, or they can be more complex, such as a precision chisel. The point where the diamond tool contacts the grinding wheel may be several thousandths wide or wider.
Understanding the characteristics and limitations of each tool is important in determining which tool can perform the task for which it is required. Straight or tapered contours can be achieved using almost any tool, while more complex contours can only be created using a shorter list of available tools.
The illustration (right) shows commonly used tools and the types of wheels they can produce or are commonly used for repairs.
The third and final factor when choosing a stationary tool is the price and overall life of the tool, which is determined by the quality of the diamond.
Although there are no quality standards for industrial diamonds, it is generally accepted that higher quality diamonds last longer. High-quality diamonds have fewer inclusions, cracks, and blemishes, and high-quality diamonds have more distinct spots. All diamonds shown in the photo (below) are ½ carat in size, the higher the quality, the clearer the shape and outline of the points. Selecting tools with the highest AA quality can also help establish a retooling or re-sharpening procedure.
Resetting is taking the used diamond out of the tool and discarding it to reveal the next sweet spot. Regrinding is a mechanical process used to restore the geometry or profile of a tool to its original printed dimensions. Both take a high initial price for the tool and spread it over time, significantly reducing the overall cost of using the tool. Using lower quality diamonds (D quality) does not allow for reset, although they are generally cheaper and disposable.
The only other considerations are mechanical. When choosing, the size and type of shank (length, diameter, taper) and diamond profile (radius, relief) are taken into account.
These properties will ultimately be determined by the machine used, and many manufacturers may create custom tools. While there are many different stationary tools available, here are some of the most common stationary tools for pruning and pruning, as well as some quick tips on how to properly use the most common tools.
Both single point and chisel tools should be set at a slight angle to the centerline of the grinding wheel, as shown below.
When installing multi-point and cluster tools, the tool face should be oriented horizontally and at right angles to the grinding wheel face along the centerline of the wheel. The knife handle should be at a slight angle.
It is difficult to produce quality parts if the grinding wheel is not properly maintained, and it is also impossible to produce quality parts without the use of quality dressing tools.
We hope that with a better understanding of stationary leveling and leveling tools and how to select them, the most overlooked components of a grinding system can get the attention they deserve.
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Post time: Nov-16-2023

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