Minor Diameter of External Threaded component:
The minor diameter of external threads can be determined by using a special type of micrometer which is provided with number of V-peices. These V pieces are changeable according to the root diameter of the thread profile. This method is used for British standard and British association threads. While measuring the minor diameter, the V pieces are connected to micrometer anvil and the screw is adjusted in between the anvils as tip diameter of V pieces matches with the root diameter of thread profile. If it is not exactly matching we should change the V pieces until a perfect match is obtained. Once the perfect match is obtained, then we should take the reading on micrometer which gives the minor diameter of screw or external threaded component.
Measurement of Minor Diameter of Internal Threaded component(Nut):
Minor diameter of an internal threaded component can be measured by two methods as they are by using Tapered Parallels and using Rollers & Slip gauges.
In the method of using tapered parallels, the tapered plates are placed at initial position on each other as they give minimum height and then they are inserted into a nut component. After inserting in a nut, they are slide on each other as the height be increasing. The sliding of tapered parallels is done until their top and bottom surfaces touch the crest points of the internal threads. Once they touch there will be no movement and in this position we should find the height of the plates by using micrometer. The micrometer anvils are to be arranged on the plates and reading should be taken.This reading will give the minor diameter of the Internal threaded component(nut).
In the method of using rollers and slip gauges, the two rollers are adjusted inside a nut with the help of slip gauages. It means in between the rollers number of slip guages are arranged as per gap taking place between the rollers. Here the diameter of rollers and width of slip gauages are known. By adding all these values we can find the minor diameter of an internal threaded component or a nut.
The minor diameter of external threads can be determined by using a special type of micrometer which is provided with number of V-peices. These V pieces are changeable according to the root diameter of the thread profile. This method is used for British standard and British association threads. While measuring the minor diameter, the V pieces are connected to micrometer anvil and the screw is adjusted in between the anvils as tip diameter of V pieces matches with the root diameter of thread profile. If it is not exactly matching we should change the V pieces until a perfect match is obtained. Once the perfect match is obtained, then we should take the reading on micrometer which gives the minor diameter of screw or external threaded component.
Measurement of Minor Diameter of Internal Threaded component(Nut):
Minor diameter of an internal threaded component can be measured by two methods as they are by using Tapered Parallels and using Rollers & Slip gauges.
In the method of using tapered parallels, the tapered plates are placed at initial position on each other as they give minimum height and then they are inserted into a nut component. After inserting in a nut, they are slide on each other as the height be increasing. The sliding of tapered parallels is done until their top and bottom surfaces touch the crest points of the internal threads. Once they touch there will be no movement and in this position we should find the height of the plates by using micrometer. The micrometer anvils are to be arranged on the plates and reading should be taken.This reading will give the minor diameter of the Internal threaded component(nut).
In the method of using rollers and slip gauges, the two rollers are adjusted inside a nut with the help of slip gauages. It means in between the rollers number of slip guages are arranged as per gap taking place between the rollers. Here the diameter of rollers and width of slip gauages are known. By adding all these values we can find the minor diameter of an internal threaded component or a nut.
Chúng tôi là nhà cung cấp hàng đầu về máy đo khoảng cách, panme đo ngoài, caliper điện tử, chà nhám rung máy, máy cắt sắt và nhiều hơn nữa giá cả phải chăng hơn nhiều.
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