ALMT - Rotary Dresser

Traverse Rotary dresser

Example of Rotary Dresser for Profile Forming

AR1

AR2

AR3

AR4

AR5

AR6

AR7

Prof ile

Used for traverse dressing of grinding wheels.

Used for total forming shape of grinding wheel.

Uses prismatic diamonds that offers consistent sharpness and wear resistance.

Diamonds set on both shoulders are

This is a double- shouldered radius type using natural diamonds. This type is used for forming wide grinding wheels and for forming a radius around the

This is a Impregnated type with ne diamond grains bonded by sintered metal. It has a long life, but the wider the abrasive grain layer, the worse the cutting ability.

Cup-shaped dresser suitable for dressing small-diameter grinding wheels.

Various Gears

Tap

Ball Screws

Various Shafts

Needle Valve

suitable for processing micro-prole.

Excellent for micro-shape machining.

Features

Allesta

Traverse Rotary Dresser for High Precision Profile

periphery of the grinding wheel.

Various customizations are available with our micro-shape machining technology at the tool edge to meet a wide range of requests.

Features • Rotary dresser for traverse forming that enables machining of fine shapes by its acute edge angle design. • The abrasive grain and grain arrangement that specialized for traverse process enables to achieve high accuracy and long life. Applications • Interpolate dressing of conventional grinding wheel and CBN wheel for profile grinding. • Bearings, Ball screws, Needle valves, Various shafts, Gears, Taps, Rolling dies

Edge R (mm)

-

≥ 1.5

≥ 0.25

≥ 0.25

≥ 0.25

-

-

Profile Accuracy (µm)

≥ 1.5

≥ 2

≥ 2

≥ 2

≥ 2

-

-

Edge Angle (degree)

-

-

≥ 40

-

-

-

-

Outer Diameter (mm)

≤180

≤ 180

≤ 180

≤ 180

≤ 180

≤ 200

≤ 200

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Wear Resistance

Wear Resistance Evaluation Result

★★☆

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★☆☆

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Sharpness

Applicable Range Abrasive Grain Size

0.05

0.3–0.6 mm (Square Column)

0.04

Types

SX

SX

SX, CWN

SX

SX

X

SX, X, CWN

5 times better Wear resistance!

0.03

φ 50–200 mm

Outer Diameter

SX type: Rotary dresser with diamonds fixed by hard metal bond X type: Impregnated type rotary dresser CWN (crown) type: Rotary dresser with prismatic diamonds fixed by Ni plating

0.02

≥ 18°

Edge Angle

≥ 18°

R≥ 0.1

Criteria for Dresser Life

0.01

Edge R

≥ 0.1 mm

Radial Profile Accuracy

0

Recommended Dressing Conditions (Traverse Dress)

≤ 1.5 µm

5 3.5

20 21

0

10

15

25

30

Amount of Grinding Wheel Wear (cm 3 )

Conventional Grinding Wheel

Hard Conventional Grinding Wheel

CBN Wheel

Dress Direction

Down

Down

Down

Disc Dresser

Rotary Dressers for Gear Grinding Process

Peripheral Speed Ratio

0.25–0.5

0.3–0.9

0.3–0.9

As a dresser for shaping worm-shaped grinding wheels used in gear grinding, it realizes "higher precision gears" and "reduced grinding costs" by extending dresser life.

Dress Amount (mm)

0.02

0.02

0.01

Infeed Rate (µm/pass)

5–30

3–5

2–3

Features • Based on information such as Workpiece gear specifications, grinding wheel shape and specifications, we design a dresser that achieves the required tooth surface quality. • Extremely high tooth profile accuracy of 0.001 mm or less can be obtained. • High ability to maintain tooth profile accuracy shape and low dresser life variation contribute to reduced grinding costs. Applications • Dressing of worm-shaped grinding wheels used for generating the tooth form of automotive and machine gears

Dress Out (Traverse Cycles)

0–4

0–4

0–4

Feed Rate Feed Rate (mm/min) = C × Rotary Dresser Width × Grinding Wheel Revolution (min -1 )

Dressing Method

Grinding Method

C

Disc Dresser Contour Shape

Standard

0.025–0.1

Process Image

1mm

Efficient Grinding High Speed Grinding

0.125–0.2

Centerless Grinding

0.005 – 0.01

Dressing Method

Interpolating

Traverse

Cup Type

Dresser Shape Data ( R1000 )・・ 1μm

3

4

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