模具设计模具热处理中英文对照外文翻译文献

中英文对照外文翻译

Heat Treatment of Die and Mould Oriented Concurrent Design

Abstract:

Many disadvantages exist in the traditional die design method which belongs

to serial pattern. It is well known that heat treatment is highly important to the

dies.

A

new

idea

of

concurrent

design

for

heat

treatment

process

of

die

and

mould was developed in order to overcome the existent shortcomings of heat

treatment

process.

Heat

treatment

CAD/CAE

was

integrated

with

concurrent

circumstance

and

the

relevant

model

was

built.

These

investigations

can

remarkably improve efficiency, reduce cost and ensure quality of R and D for

products.

Key words :

die design; heat treatment; mould

ong

desires

for

precision,service

life,development

period

and

cost,modern

die

and

mould

should

be

designed

and

manufactured

ore

more

and

more

advanced

technologies

and

innovations

have

been

applied,for

example,concurrent

engineering,agile

manufacturing

virtual manufacturing,collaborative design,etc.

Heat treatment of die and mould is as important as design,manufacture

and

assembly

because

it

has

a

vital

effect

on < /p>

manufacture

，

assemb ly

and

service

life

．

Design

and

manufacture

of

die

and

mould

have

progressed

rapidly

，

but heat treatment lagged seriously behind them

．

As die and mould

industry

develops

，

heat

treatment

must

ensure

die

and

mould

there

are

good

外语翻译

state

of

manufact ure

，

assembly

and

wear

—

resistant

properties

by

request.

Impertinent heat treatment can influence die and mould manufacturing such as

over

—

hard and

—

soft and assembly

．

Traditionally the heat treatment process

was

made

out

according

to

the

methods

and

properties

brought

forward

by

designer

．

This could make the designers of die and mould and heat treatment

diverge

from

each

other

，

for

the

designers

of

die

and

mould

could

not

fully

realize

heat

treatment

process

and

materials

properties

，

and

contrarily

the

designers

rarely

understood

the

service

environment

and

designing

thought.

These divergences will impact the progress of die and mould to a great

extent.

Accordingly

，

if the process design of heat treatment is considered in the early

designing stage

，

the aims of shortening development period

，

reducing cost and

stabilizing

quality

will

be

achieved

and

the

sublimation

of

development

pattern from serial to concurrent will be realized

．

Concurrent

engineering takes

computer integration system as

a

carrier

,at

the very start subsequent each stage and factors have been considered such as

manufacturing

，

heat

treating

，

properties

and

so

forth

in

order

to

avoid

the

error

．

The concurrent pattern has dismissed the defect of serial pattern,which

bring about a revolution against serial pattern

．

In the present work

．

the heat treatment was integrated into the concurrent

circumstance

of

the

die

and

mould

development

，

and

the

systemic

and

profound research was performed

．

1

Heat Treatment Under Concurrent Circumstance

The

concurrent

pattern

differs

ultimately

from

the

serial

pattern(see

Fig

．

1).With

regard

to

serial

pattern

，

the

designers

mostly

consider

the

structure

and

function

of

die

and

mould

，

yet

hardly

consider

the

consequent

process

，

so that the former mistakes are easily spread backwards

．

Meanwhile

，

the

design

department

rarely

communicates

with

the

assembling

，

cost

accounting and sales departments

．

These problems certainly will influence the

development progress of die and mould and the market foreground

．

Whereas in

the concurrent pattern

，

the relations among departments are close

，

the related

departments

all

take

part

in

the

development

progress

of

die

and

mould

and

have close intercommunion with purchasers

．

This is propitious to elimination

1

外语翻译

of

the

conflicts

between

departments

，

increase

the

efficiency

and

reduce

the

cost

．

Heat

treatment

process

in

the

concurrent

circumstance

is

made

out

not

after

blueprint

and

workpiece

taken

but

during

die

an

d

mould

designing

．

In

this way

，

it is favorable to optimizing the heat treatment process and making

full use of the potential of the materials

．

2

Integration

of

Heat

Treatment

CAD

／

CAE

for

Die

and

Mould

It can be seen from Fig

．

2 that the process design and simulation of heat

treatment

are

the

core

of

integration

frame

．

After

information

input

via

product

design

module

and

heat

treatment

process

generated

via

heat

treatment CAD and heat treatment CAE module will automatically divide the

mesh for parts drawing

，

simulation temperature field microstructure analysis

after

heat

—

treatment

and

the

defect

of

possible

emerging

(such

as

overheat,over

burning)

，

and

then

the

heat

treatment

process

is

judged

if

the

optimization is made according to the result reappeared by stereoscopic vision

2

外语翻译

technology

．

Moreover

tool

and

clamping

apparatus

CAD

and

CAM

are

integrated into this system

．

The

concurrent

engineering

based

integration

frame

can

share

information with other branch

．

That makes for optimizing the heat treatment

process and ensuring the process sound

．

2.1

3-D

model

and

stereoscopic

vision

technology

for

heat

treatment

The problems about materials

，

structure and size for die and mould can

be

discovered

as

soon

as

possible

by

3-D

model

for

heat

treatment

based

on

the

shape

of

die

and

mould

．

Modeling

heating

condition

and

phase

transformation

condition

for

die

and

mould

during

heat

treatment

are

workable

，

because

it

has

been

broken

through

for

the

calculation

of

phase

transformation

thermodynamics

，

phase

transformation

kinetics

，

phase

stress,thermal stress

，

heat transfer

，

hydrokinetics etc

．

For example

，

3-D heat

—

conducting algorithm models for local

heating complicated impression and

3

外语翻译

asymmetric

die

and

mould

，

and

M

ARC

software

models

for

microstructure

transformation

was

used

．

Computer

can

present

the

informations

of

t emperature

，

microstructure and stress at arbitrary time and display the entire

transformation

procedure

in

the

form

of

3-D

by

coupling

temperature

field,microstructure

field

and

stress

field

．

If

the

property

can

be

coupled,various partial properties can be predicted by computer

．

2.2 Heat treatment process design

Due to the special requests for strength

，