What is a sine plate for?

What is a sine plate for?

: a block or plate for holding parts for machining at desired angles.

How are sine plates calculated?

Sine Bar Usage

1. Always use a perfectly flat and clean surface plate.
2. Place one roller on the surface plate and the other roller on the slip gauge block stack of height H.
3. Let the sine bar be set to an angle ϴ.
4. Then sin(ϴ) = H/L, where L is the distance between the center.

What is sine bar formula?

The sine bar is based on trigonometry. The distance between the two setting rollers of the Sine Bar is given by L. From this we can write θ = sin^-1 (h / L). This is the formula for sine bar for calculating the angle or setting the workpiece to the required angle. This device is called “Sine Bar”.

What is the least count of sine bar?

Answer: Accuracy up to 0.01mm/m of length of the sine bar can be obtained.

How do you use a sine table?

Start from the top and move downwards till you reach 55. Now, move to the right in the row of 55 and reach the column of 18′. Therefore, sin 55° 20′ = 0.8224. Conversely, if sin θ = 0.9298 then θ = sin 68° 24′ because in the table, the value 0.9298 corresponds to the column of 24′ in the row of 68, i.e., 68°.

What is a sine vice used for?

Sine bar style of precision vice. Suitable for grinding processing which need angle set-up. It is made of tool steel, hardened and precision ground. Accurate angle setting is made by gauge blocks, max.

How is a sine bar used?

A sine bar is used in conjunction with slip gauge blocks for precise angular measurement. A sine bar is used either to measure an angle very accurately or face locate any work to a given angle offering a high degree of accuracy in measuring angles for milling, grinding and inspection applications.

What is sine table?

A sine table (or sine plate) is a large and wide sine bar, typically equipped with a mechanism for locking it in place after positioning, which is used to hold workpieces during operations.

What is a sine table?

How does sine bar work?

Working Principle of Sine Bar: The principle of operation of the sine bar is based on the law of trigonometry. If one roller of sine bar is placed on the surface plate and the other roller is placed on the height of slip gauges, then the structure formed by the sine bar, surface plate, and slip gauges forms a triangle.

How do I specify sine bar?

Sine bar is specified by the distance between the centres of two rollers i.e., 100mm, 200mm, 250mm, or 300mm, two rollers must be of same diameters. The various parts of sine bar are hardened before grinding and lapping.

What is a machinist sine bar?

The sine bar or sine plate is used for accurately setting up work for machining or for inspection. Gage blocks are usually used for establishing the height. Rule for determining the height of the sine bar setting for a given angle: multiply the sine of the angle by the length of the sine bar.