Product category:
Toolholders
News Release from: Crawford Collets | Subject: ER/ESX collets and tooling
Edited by the Manufacturingtalk Editorial
Team on 16 January 2002
Collets improve run-out for tooling
The ER/ESX collets, manufactured to DIN 6499-B, set new standards of run-out and repeatability of 6 microns for types ER16 to ER40 whilst being priced at standard collet cost.
Crawford Collets, the premier manufacturer of workholding and toolholding equipment has launched an extended range of ER/ESX collets and tooling The collets, manufactured to DIN 6499-B, set new standards of run out and repeatability of 6 microns for types ER16 to ER40 whilst being priced at standard collet cost
This article was originally published on Manufacturingtalk on 6 Sep 2001 at 8.00am (UK)
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Wide selection of workholding equipment on view
At the Tooling Show this year Crawfords will be exhibiting a selection from its extensive range of specials as well as its comprehensive range of standard collets, collet chucks and tooling.
Collets producer offers specialist workholding
High quality tool and workholding parts maker is renowned for its ability to produce innovative solutions to production problems by designing and manufacturing "specials" quickly.
The exactness of detail in the design and manufacture ensures a consistent repeatable high accuracy.
Special steel and heat treatments are used to reach the required collapse demanded by DIN 6499 and have less tendency to distort compared with 16 slot collets, especially those with small bores.
All edges are deburred and are additionally rounded to protect the inner core or the collet chuck from marks, ensuring a world class collet.
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Designed to meet the demanding requirements of today's super-precision lathes, this toolpost provides fast set up, 48 position indexing, and high accuracy at an affordable cost.
All major styles of spindle nose tooling offered
Spindle nose tooling, encompassing all major front and back end styles, offers exceptional accuracy and quality at a highly competitive price.
ER collets to DIN 6499-A for tapping with internal square drives are also available for tapping without axial compensation.
At the same shank diameter the DIN as well as the ISO taps can be used.
Tapping collets ET are available with the external profile consistent with DIN 6499 (ER/ESX) providing the most rational and economic solution for tapping on CNC machines.
They have a strong and compact construction for excellent tap alignment as well as built in axial compensation.
There is a wide range of collet chucks and collet holders for collets to DIN 6499 (ER/ESX) with a variety of shank configurations to allow coolant through the spindle or flange, for holding tools with cylindrical shanks and to allow automatic tool changing.
The chucks are all pre-balanced.
Competitively priced, high quality clamping nuts to DIN 6499-D are available for use at normal and at ultra high speeds.
Special thermal treatment gives extended life and protection against corrosion.
It also gives lower friction, which takes effect in the thread as well as the 30 degree cone of the collet, resulting in a 50% higher clamping force compared with standard nuts.
To complement the range of Crawford products, the company offers unique mechanical design precision collet chucks which provide a concentricity and repeatable accuracy of 3 microns by axial clamping of a precision collet.
High clamping forces are produced by hand operation without any loss of clamping force, which can occur with hydraulic designs.
The chucks can be used in drilling, milling, reaming and tapping applications.
They have simple tool clamping using a hexagon key which allows tool and collet changing in the machine whilst the collet arrangement absorbs vibration compared to shrinking chucks, which tend to resonate.
The symmetrical design and pre-balancing allows use at speeds up to 20,000rpm with a highly flexible collet capacity of H10 without loss of concentricity or gripping force.
(This was Manufacturingtalk's Top Story on 15 January 2002).
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