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Internal & External Roller Burnishing Tools

Single Roller internal and external burnishing tools

Taper, special profiles burnishing tools

Special tools as per customers specification

O u r R a n g e i n c l u d e s

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The Surface of metal parts worked thro' turning, reaming or boring operations is a succession of "PROJECTIONS" or "PEAKS" and"INDENTATIONS or VALLEY" when microscopically examined. (See Fig1.) The Roller burnishing operation compresses the "Projection (Peaks) into the indentation (Valleys) thus forming a smooth mirror finished surface ( as in fig.2). Any material not exceeding 40 Rockwell Hardness "C" can be roller burnished.

ABHI Roller Burnishing tools generally consists of a series of tapered and highly polished precision rollers made of High Speed Steel or Cardide material, positioned in slots with a retaining cage. The rollers rotate around on an inversely tapered mandrel. The tool or part can be rotated at optimum speed to develop pressure that exceeds the yield of softer work piece to get desired results.

i) ACCURATE SIZE - Parts produced by roller burnishing with control in size to micron levels with high consistency and repeatabilty.

Ii) SUPERFINE SURFACE FINISH - A very smooth surface finish as high as 0.05 to 0.2 Ra finish can be obtained thro' Roller Burnishing when compared to 0.5 to 3.5 Ra finish in operation such as grinding, reaming, drilling, boring, or turning.

iii) HARDER SURFACE - Cold rolling condenses the grain structure of metal, producing a hard corrosion resistant surface. The surface hardness increases 5% to 10% with a penetration of 0.25 mm to 0.76 mm. This results in increase of part's wear life, added strength, and improves fatigue resistance.

V) SAVES TIME AND LABOUR - The tool processes parts in second when compared to minutes taken for grinding, reaming, honing or lapping etc., Also a less skilled labour can operate unlike other operations where labour skill play a more important roll in finish. Thus the less labour cost and high productivity saves much of production cost.

v) MONEY SAVER - A part from reducing production cost as above the ABHI burnishing tools can be mounted on any onventional lathe or drilling machine thus eliminating high capital investment on precision machines.

vi) REPLACEABLE WEAR PARTS - Wear parts such as rollers, guide rollers, bearings etc., can be easily replaced in ABHI Burnishing Tools which helps in longer Tools life. A totally maintenance free tools.

W h a t i s R o l l e r - B u r n i s h i n g ?

A b o u t t h e t o o l s Fig 1. Fig 2.

Ad va n t a g e s o f R o l l e r - B u r n i s h i n g

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All mating parts requires high superfinish to improve the contact area and easy dismantling. Hence Roller Burnishing finds enumerous applications such as Bearing Sizes, Lamination Stators & Rotors of Electrical Motors, Valve seatings, Hydraulic and pneumatic eqpt, parts, fan shafts, mixi parts, Gun Barrels, Block Gas Components, bush shafts, Automobile, Textile and Engineering components.

ABHI BURNISHING TOOLS offers a wide variety of tools for Internal, External, Tapered Diameters, Face, Radius, Profile burnishing tools, Sizing Tools, Bearingizing Tools, Expanding Tools, Single Roller Tools, Step Burnishing Tools, Deep Hole Tools etc. We can also develop special tools as per customers specific requirements..

Burnishing is a Cold Rolling Process without actual removal of metal. Hence it is important to control the pre burnishing stock allowance and surface roughness to desired levels to obtain a best burnished surface finish. The surface finish generally obtained for various operations given below.

Abhi Burnishing Tools18 & 19, 2nd Cross,Santhi Nagar,Avarampalayam,Coimbatore

TELEPHONE : 0422-2560532TELEFAX: 0422-2562789.Email : info@abhiburnishingtools.comwww.abhiburnishingtools.com

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Abhi Burnishing Toolsw w w. a b h i b u r n i s h i n g t o o l s . c o m