Types and Uses of Plug Gauges

Plug gauges are available in several different types. These include:

Go plug gauges

No-go plug gauges

Combination go/no-go plug gauges

Go plug gauges and no-go plug gauges are called single-ended gauges and consist of a handle into which a precisely machined pin or shaft has been inserted (sometimes called a member) and which is used to verify an aspect of the dimensional tolerances of the hole. For single-ended gauges, they are usually offered in pairs with one go gauge and one no-gauge gauge.

In its use, a go plug gauge is designed to test the minimum dimensional limit of the hole (i.e. the lower tolerance of the hole’s diameter) which represents the maximum amount of remaining material on the part or workpiece. For an acceptance condition, the go plug gauge should fit in the hole. If the go plug gauge will not fit into the hole in the workpiece, then that is an indication that the hole’s diameter is too small (an insufficient amount of material has been removed from the workpiece) and the part needs to be rejected.



For a no-go plug gauge, its purpose is to validate the maximum dimensional limit of the hole (the upper tolerance of the hole’s diameter) which corresponds to the minimum acceptable amount of material remaining on the part or workpiece. For the part to be accepted, the no-go plug gauge should not fit into the hole. If the no-go plug gauge did not fit into the hole, then this is an indication that the hole’s diameter Is below the upper limit and the part can be accepted (provided that the go plug gauge did fit into the hole). If however, the no-go plug gauge fits into the hole, then that is an indication that the hole’s diameter is too large (i.e. beyond the upper tolerance limit that was specified), meaning that too much material was removed during the machining operation, and therefore the part must be rejected. Table 1 below summarizes these conditions and the resulting accept/reject status of the part.

In a combination go/no-go plug gauge (also called a double-ended plug gauge), the gauge handle has a go plug gauge extending outwards from one side of the handle and a no-go plug gauge extending outwards from the opposite side. This simplifies the use of the tool and allows for increased speed in the inspection process. In some models, the handle may be color-coded with the go side painted with green paint and the no-side painted with red paint. Even without color-coding, for plug gauges, the go plug gauge can always be distinguished from the no-go plug gauge by two observable conditions:

The go plug gauge is always smaller in diameter than the no-go plug gauge, and

The go plug gauge is always larger in width (thickness) than the no-go plug gauge

Plug gauges provide fast results and have the advantage that users can be easily trained on their use as plug gauges rely on a simple working principle. As a result, no strong knowledge of scientific methods and metrology is needed, making training simpler and open to a wider pool of users. Their simplicity also means that they are inexpensive relative to other forms of measuring instruments.

One drawback of plug gauges is that through use they tend to wear out over time and therefore require replacement. They should also be checked periodically to assure that they are still within tolerance.

Plug gauges that are used for the accept/reject screening of parts are called working gauges.

Rich Treasure Precision is pleased to deliver Pin Gauge, Ceramic Plug Gauge. Safe payment and on time deliver time will give you.

评论

发表评论

此博客中的热门博文

Do You Know About Fused Silica Domes?

图片
Fused silica  is a highly pure, synthetic amorphous silicon dioxide (SiO2) material that is made by melting high-purity silica sand. It is an extremely hard and chemically resistant material that is used in a variety of applications, including the production of laboratory equipment, optical fibers, and semiconductor wafers.   One common use of fused silica is in the production of  optical domes , which are transparent or translucent structures that are used to cover or enclose a space. Fused silica domes are often used in high-precision optical systems, such as telescopes, cameras, and laser systems, where they are used to protect delicate optical components from environmental contaminants and to provide a clear, unobstructed view of the environment. There are several advantages to using  fused silica domes  in optical systems. Firstly, the high purity and chemical resistance of fused silica make it an ideal material for use in high-precision optical system...
阅读全文

THE BEST USE OF LED VANITY MIRRORS

图片
The lighting capability of  LED Mirrors  is almost similar to natural lights. This mirror serves the dual purpose of making a place look beautiful and assistance in self-grooming to people. However, they are more acknowledged for decorating the place. They give a clear vision and are feasible to view yourself than any other form of lighting. They are not only used at homes but in offices, hotels, and boutiques. These mirrors are brilliant to uplift the aura of the place. They provide a classy environment with high energy efficiency. The environmentally friendly characteristic makes them extremely desirable.    WHAT IS AN LED MIRROR? An LED mirror in simple terms is a mirror with the addition of LED bulbs. This could be anything from strip lights around the side of the mirror to create a ‘back-lit’ effect or bulbs straight on the front to create a vintage vanity LED mirror style.  LED mirrors come in all shapes, sizes and styles...
阅读全文

Maintaining Sterility with a Soft Wall Cleanroom: Design, Construction, and Best Practices

图片
A cleanroom is a controlled environment that is designed to maintain low levels of airborne particles, dust, and other contaminants. Cleanrooms are used in a variety of industries, including pharmaceuticals, biotechnology, electronics, and food processing, among others. One type of cleanroom is the soft wall cleanroom, which is known for its flexibility and ease of installation. In this article, we will discuss the features and benefits of a soft wall cleanroom and how you can find a reliable soft wall cleanroom manufacturer. A  soft wall cleanroom  is a modular cleanroom system that features flexible vinyl curtains instead of rigid walls. The curtains are made of high-quality vinyl that is resistant to bacteria, fungi, and other microorganisms. The curtains are suspended from a metal frame and are designed to create a barrier that separates the cleanroom from the surrounding environment. The soft wall cleanroom is ideal for applications that require a low level of contaminati...
阅读全文