There are many types of collet used in the metalworking industry. Common industry-standard designs are R8 (internally threaded for mills) and 5C (usually externally threaded for lathes). There are also proprietary designs which only fit one manufacturer's equipment. Collets can range in holding capacity from zero to several inches in diameter. The most common type of collet grips a round bar or tool, but there are collets for square, hexagonal, and other shapes. In addition to the outside-holding collets, there are collets used for holding a part on its inside surface so that it can be machined on the outside surface (similar to an expanding mandrel). Furthermore, it is not uncommon for machinists to make a custom collet to hold any unusual size or shape of part. These are often called emergency collets (e-collets) or soft collets (from the fact that they are bought in a soft (unhardened) state and machined as needed). Yet another type of collet is a step collet which steps up to a larger diameter from the spindle and allows holding of larger workpieces.
In use, the part to be held is inserted into the collet and then the collet is pressed (using a threaded nose cap) or drawn (using a threaded drawbar) into the body which has a conjugate taper form. The taper geometry serves to translate a portion of the axial drawing force into a radial clamping force. When properly tightened, enough force is applied to securely clamp the workpiece or tool. The cap or drawbar threads act as a screw lever, and this leverage is compounded by the taper, such that a modest torque on the screw produces an enormous clamping force.
The precise, symmetric form and rigid material of the collet provide precise, repeatable radial centering and axial concentricity. The basic mechanism fixes four of the six degrees of kinematic freedom, two locations and two angles. Collets may also be fitted to precisely align parts in the axial direction (a fifth degree of freedom) with an adjustable internal stop or by a shoulder stop machined into the internal form. The remaining sixth degree of freedom, namely the rotation of the part in the collet, may be fixed by using square, hexagonal, or other non-circular part geometry.
The global Collets market was valued at xx million US$ in 2018 and will reach xx million US$ by the end of 2025, growing at a CAGR of xx% during 2019-2025.
This report focuses on Collets volume and value at global level, regional level and company level. From a global perspective, this report represents overall Collets market size by analyzing historical data and future prospect.
Regionally, this report categorizes the production, apparent consumption, export and import of Collets in North America, Europe, China, Japan, Southeast Asia and India.
For each manufacturer covered, this report analyzes their Collets manufacturing sites, capacity, production, ex-factory price, revenue and market share in global market.
The following manufacturers are covered:
DT technologies
Hardinge Workholding
Ortlieb Pr?zisions
IMS
Rego-Fix
Techniks
5th Axis Inc
Advanced Machine & Engineering
AMF ANDREAS MAIER
Berg & Co. GmbH Spanntechnik
Briney
Buck Chuck Company
CENTAUR
Chumpower Machinery
isel Germany AG
MACK Werkzeuge AG
Segment by Regions
North America
Europe
China
Japan
Southeast Asia
India
Segment by Type
Slotted
Dead length
Pneumatic
For marble working
Others
Segment by Application
Traditional Machine Tools
Machining Centers
Lathe Centres
Others
Summary:
Get latest Market Research Reports on Collets. Industry analysis & Market Report on Collets is a syndicated market report, published as Global Collets Market Professional Survey Report 2019. It is complete Research Study and Industry Analysis of Collets market, to understand, Market Demand, Growth, trends analysis and Factor Influencing market.