Mandrels also have specialized types and find their use in filament winding, the production of steel cores, and double-reed musical instruments. Why do we need Mandrels? The collar mandrel is basically a lighter plain mandrel with two fixed collars attached at both ends. The fixed collars fit firmly on the workpiece. Generally, this mandrel is used for holding workpieces with diameters above 100 mm. Screwed Mandrel The line is standardised on most common gripping ranges and spindle types, and the company maintains a database of machine tool spindles and drawtubes to enable customization of drawtube connectors. Additionally, Kitagawa Europe offers a number of specialized systems to fit each company’s individual needs. Kitagawa Europe can supply systems with multiple expanding sleeves or mandrels that can support workpieces with IDs as large as 635mm. Although typically used in turning or grinding applications, our expanding mandrels can be adapted for use on milling machines with special fixtures as well. Availability of multiple sleeves for work with greater length-to-diameter ratios, eliminating wobble and chatter.

Several forces act on the workpiece to make it deflect away from the center, which makes the usage of mandrels necessary. Collet style mounts in any machine or fixture that accepts 5C, 16C or 3J collets using existing spindle or adapter Mandrels used for holding make the workpiece rotate around the center only, increasing the job’s accuracy. Meanwhile, the ring mandrels are used to forge or reshape rings.

Hardinge

Forging and reshaping: Ring mandrels (also called triblets) are used in the jewelry industry for forging and reshaping rings on them. These models utilise the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels. Mandrels are typically slightly tapered to provide support during machining, so a solid frictional grip between the mandrel and the hole wall is in place when pressed into a previously machined hole. These models utilize the same precision mandrels, expanding sleeves and locators as our CNC Expanding Mandrels Mandrels used for holding the workpiece in place have different types and find their uses in the industrial, lathe, and woodworking machines. Following are the types of mandrels used for holding the workpiece: Solid Mandrel

A solid mandrel is a cylindrical, tapered bar whose one side is larger in diameter than the other. It is the simplest type of mandrel generally available in most machine shops. It is also known as the plain mandrel.Side-actuated with an included square-drive key means that this unit can accommodate parts with blind bores as well as those with thru-holes. Expanding mandrel has a slightly complex construction. It has a mounted bush over a tapered arbor, which has a tapered hole with three longitudinal cuts. Two slots are cut nearly through, while the third cut is of full length. This construction allows the expansion of split bushing within a limit.