What is the working principle of Jig Boring Machine?
What is the working principle of Jig Boring Machine?
Jig boring machine works on the principle of feed in the vertical axis of the hole and its radius. In this process rotating tool is moved over the process is given with respect to static work. This principle is used for large workpieces.
What is the accuracy of Jig Boring Machine?
A typical jig borer has a work table of around 400 x 200 mm, (16 x 8 inch) which can be moved using large handwheels (with micrometer-style readouts and verniers) on particularly carefully made shafts with a strong degree of gearing; this allows positions to be set on the two axes to an accuracy of 0.0001 inch (2.5 …
Which measuring system is used in Jig Boring Machine?
Devices with stable and adjustable end gauges and indicator sensing units are used on jig-boring machines for precise measurements; also used are lead screws with dials and a vernier, which are equipped with error-elimination compensators, and graduated shafts with optical measuring instruments.
What is jig grinding process?
A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required. The machine operates by a high speed air spindle rotating a grinding bit. The air spindles are removable and interchangeable to achieve varying surface speeds.
What is the principle of boring?
In machining, boring is the process of enlarging a hole that has already been drilled (or cast) by means of a single-point cutting tool (or of a boring head containing several such tools), such as in boring a gun barrel or an engine cylinder. The first boring machine tool was invented by John Wilkinson in 1775.
What defines a jig?
1a : any of several lively springy dances in triple rhythm. b : music to which a jig may be danced. 2 : trick, game —used chiefly in the phrase the jig is up. 3a : any of several fishing devices that are jerked up and down or drawn through the water.
Which boring machine has the highest accuracy?
Jig boring machines
Jig boring machines are designed to establish the location of holes in surfaces to the highest level of accuracy possible with a machine tool.
What is a boring jig?
Jig boring is used to accurately enlarge existing holes and make their diameters highly accurate. Jig boring is used for holes that need to have diameter and total runout controlled to a high degree. Dedicated jig boring machines are designed to machine holes with the tightest tolerances possible with a machine tool.
What is centerless grinding process?
Centerless grinding is the process of removing material from the outside diameter of a work piece using an abrasive wheel. In its simplest form, a centerless grinder consists of the machine base, grinding wheel, regulating wheel and work blade.
Which tool is used for boring operation?
Lathes. Lathe boring is a cutting operation that uses a single-point cutting tool or a boring head to produce conical or cylindrical surfaces by enlarging an existing opening in a workpiece. For nontapered holes, the cutting tool moves parallel to the axis of rotation.
What are examples of boring tools?
The Different Types of Boring Tools
- Solid boring bars. Typically made of carbide for finishing or heavy metal for roughing, solid boring bars have dense structures that make for a more stable cut as axial force is applied.
- Damping bars.
- Rough boring heads.
- Fine boring heads.
- Twin cutter boring heads.
- Digital boring heads.
What is an example of a jig?
An example of a jig is when a key is duplicated, the original is used as a jig so the new key can have the same path as the old one. It is a work holding device that holds, supports and locates the workpiece for a specific operation but does not guide the cutting tool. It provides only a reference surface or a device.