DESIGN/CADCAM 3DIMENSI

3D CAD CAM TRAINING

2016-05-27T04:31:00.000-07:00

Training is the most important step for the successful implementation of a CAD system.

For new installations, personnel selection and training success is critical because setbacks

may be very hard to overcome. Emphasis should be placed on building a solid level of

user expertise and confidence rather than production goals that will be difficult to

achieve.

After initial system set-up and training, productivity should pick up and will probably

approximate the production levels existing before CAD was introduced. However, many

times setbacks caused by loss of data, operator errors or lack of proficiency will clobber

productivity and frustrate management and the users. Causes of these setbacks must be

determined and corrected. Each problem encountered should be used to represent a selfteaching

opportunity.

Operators have the tendency to use familiar commands instead of trying to learn new and

faster ways to do their work. The task will usually fall on the manager to identify

operations that can be accomplished more productively and to research and develop new

methods to be used.

Training should include:

>Initial training for new operators as well as on-going training for experienced users

>Cross-training within the group. It is particularly important that all CAD personnel

help new members of the group learn efficient techniques and procedures

>Regular meetings for the purpose of demonstrating new commands, programs,

menus, or other time-saving techniques

>Documentation of specific programs and procedures to enable the personnel to find

and use them easily

>Personnel must develop their own problem-solving abilities. Therefore they must be

assigned challenging responsibilities.

As training is not just a one-time activity, we provide the following checklist of training

activities:

>Every new user must be given a regular course of instruction in how to use CAD

software. A user moving from 2D to 3D must also receive a course. Courses can be

bought from the vendors or, in case of large companies, they can take place in-house.

>Training must be provided with new releases. Usually this is a short training (one

day the most)

>The team must hold productivity meetings at least every two weeks, where new

procedures, bugs, etc. can be discussed

>Develop WEB site for each CAD SW brand. On it post

>Company procedures

>Answers to frequently asked questions

>Ways to overcome known software bugs

>Bug reporting form

>Attend user group meeting and have a report from them

>One person must be assigned to develop and document design-automation tools

specific to company procedures

>Budget for training and productivity-building activities.

CAD CAM WORD

2016-05-20T19:49:00.002-07:00

Computer-aided technologies	100
Computer-aided design - File Format Genre	30
Computer-aided manufacturing	15
CAD/CAM dentistry	5
Computer-aided engineering - Industry	5

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cad/cam

3D CAD CAM PROSEDURE PHASE

2016-05-18T04:27:00.000-07:00

The successful introduction of a full range CAD/CAM system is a lengthy procedure. It

starts, as with every IT application, with the evaluation of needs, the technical

specifications of the system, the selection of the most suitable system and the

implementation.

During the evaluation of needs there must be a phased implementation of the full system.

Certain steps must be followed prior to the implementation of several modules. Existing

IT systems or equipment, which require data exchange with the CAD system must be

taken into consideration in drawing the specifications. Also, current trends in CAD

development must also be considered.

The evaluation of alternative solutions and the selection of the most suitable system

should not be based only on desk evaluation. Benchmarking of three to four candidate

systems must be made, based on one or two parts, representative of the product spectrum

a company is producing. Desk evaluation of the various systems is not easy to be

performed, unless the company is already a CAD user, has a very good knowledge of

CAD systems and follows developments within the CAD systems.

Sometimes the type of work a company is performing directs the selection of a CAD

system. Large manufacturers with many subcontractors are forcing them to acquire the

same CAD system as the one they are using. They aim at avoiding data translation

problems from one CAD system to another.

The implementation is the most difficult phase. It requires a strong support from the

management, time to pay back and it should not be a temporary task for some designers.

The problems that must be addressed include, training, organisation of the CAD team,

operation of the system and procedures that must exist.

CAD CAM ORGANISATION

2016-05-09T04:20:00.000-07:00

It is important to make CAD work on the first attempt. This can be done by selecting

people who have the best chance of making the system work, and by clearly defining

their authority and responsibilities. If the department is properly organised, the manager

will be allowed to dedicate more time on production and technical problems. On the other

hand, if the department is disorganised, or if too many people or disinterested operators

are on the system or operators don't know what is expected of them, no work will get

done and the CAD program will be a disaster.

Co-operation between departments is crucial to the future development of CAD/CAM

within the company. By anticipating future applications of the CAD/CAM equipment, the

group will be better prepared to handle this growth in an organised manner. Future

expansion plans should be considered before making substantial investments in facility

layout or design. In large installations, forming a graphics committee will help to

determine the direction of CAD/CAM within the company, and identify areas where new

equipment can be applied. Problems with incompatible computer systems can be avoided

with proper planning and communication between the departments that will use the

CAD/CAM database.

Organisational matters are crucial to the effective management and development of the

system. CAD managers can benefit from properly organising their departments so that

they can dedicate more time to technical and operational matters.

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CAD 3D OPERATING AND PROSEDURES #1

2016-05-03T04:16:00.000-07:00

At the beginning, the CAD system should be used for simple projects in order to check

out the system and to gain confidence. If the system is for drawings generation, then

drawings that may have a lot of revisions are ideal because revising data in a CAD system

is faster and neater than changing paper drawings. Even if it first takes longer to create

the job or the drawings on the CAD system than with manual methods, the time saved on

the repetition or revision cycle should provide a net savings over traditional method or

manual drafting. Furthermore, inserting “pre-checked” parts, details, notes or other data

into a product or a drawing can also save some checking time.

The success of CAD is not automatic. A lot of study, training, and perseverance are

required to make the system work successfully. Attempts to automate will certainly fail if

operators are not capable in programming the system, or if planning is insufficient. A

company must learn how to use library parts, menus, and basic system commands

fluently before attempting to program the system. In case a user is selecting projects to

automate, he/she must be sure that there is enough work to offset both training costs and

software development costs, especially if extensive programming is required.

It is recommended to first automate tasks which will save the largest amounts of money

and which have the best probability of successful completion on the system. Remember

that no work will be done if assignments are beyond the abilities of the operators.

Schedules must include time for system development or capabilities will level off

quickly. Development should be applied to areas that will most benefit the bulk of group

responsibilities. All members of the CAD team should participate in analysing work in

order to find "the better way to do it" on the CAD system.

The CAD manager must be versatile enough to make CAD work in the department and to

direct its evolution within the company.

Written procedures are important because they provide clear, indisputable instructions to

CAD personnel and CAD users know what is expected of them in specific terms. If users

become confused concerning task requirements, they can communicate their complaints

more clearly by referring to parts of the procedure that need embellishment or revision.

Procedures should be updated as needed to simplify and streamline operations, and

provide the best integration with other departments using the CAD database.

Procedures are also valuable because once they are finalised they can be reused. They

help train new users and refresh casual users, and information is not lost when key people

leave the company. Good procedures will provide a sound basis for productive CAD

development in the company.

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INTRODUCTION GRAPHICS SOFTWARE CAD TO CAM #2

2016-04-28T05:44:00.003-07:00

Computer Aided Design of use of computer hardware and

graphics software to produce design drawings. modern CAD equipment allows designers to quickly produce highly accurate images and realistic product to do things that will be produced.
Computer Aided Manufacturing of automated systems producing finished products using computer-controlled production machines. CAD and CAM work together in that the digital model generated in CAD put CAM software packages.

CAM software needs to know the physical form of product (CAD models) before you can make a product right from the fabrication plans for production CNC machine instructions.

CAD Operator in demand in almost every field of design.
A CAD operator with a background in architectural design, will produce construction drawings from sketches and specifications of the architect. All modifications, schedule planning and 3D
the model will also be created in CAD and plotted for office and
client.

CAM operators, working with the production department to develop a process planning or plan to produce a product. The operator then uses CAM software for generate an instruction to manufacture products that are computer controlled machine.

CAM operators to adjust production planning design process with CAD plans. CAM operators and production engineers set the machine and cutting blade to be used in production.

An operator recommended CAM-CAD is able to read and write well in algebra, trigonometry, practice manual drafting, Windows, G code, operating systems, 2D and 3D CAD, workshop manual practices, production processes, programming manual production machinery, as well as using software for programming CNC machine.

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SEQUENCE TO WORK CAD-CAM

2014-11-29T22:51:00.001-08:00

1. Receive product samples, drawings of customer products

2. Technical Meeting with the customer, to determine the technical agreement

3. Designing a product image, product measurement, Assembly Design

4. 3D Modeling

5. Detail Drawing complete the work plan needs

6. Checking

7. Order Materials

8. Delivery Detail drawings and 3D Modeling

9. Monitoring mold process (stand-by)

1. Accept the job of customer

Data from a customer in the form of:

a. Image component (Hard Print)

b. 2D Data (soft data) - CAD data is usually a file dwg, dxf, pdf, etc.

c. 3D Data (Modeling) is usually in the iges file, IGS, STP, step, Parasolid, etc.

d. Sample (Component)

Each - each of the above data should be checked each other.

If there is a distinction to be made a report (Report) to the Technical Meeting

the customer can specify which data should be used.

2. Technical Meeting with customers

Of the Technical Meeting is expected all the details of data for mold making process can be obtained.

Details can be seen in the specification of Mold.

3. Assembly Design

Step - step in making assembly design

a. Specify the layout of products

things that underlie the determination of the lay out, among others:

1. The amount of the required cavity

2. Direction undercut Slide or Lift Core (if any)

3. Type gate used

b. Determining the size of the mold base.

The basis for determining the size of the mold base

1. Lay out the determination of the product

2. tonnage injection molding machine used

c. Completing Assembly Design

things that must be considered in making assy detail design

1. Installation of the slide or lift cores

2. Determine which parts of which must be in pairs of inserts

3. Determine Stroke.

4. Installation of ejector pin.

5. Installation of Cooling.

6. Mounting bolts.

7. Installation of standard parts.

Details Design Assembly is what will be the reference for the creation of 3D Mold Design and

Detail Drawing (Drawing Processing). Addition of Assembly Design we can make

Order Schedule, ranging from Mold base, Insert, up to the standard part.

4. 3D Modeling

3D modeling include:

A. Modeling Component

If the data received from the customer only 2D Cad drawings of components or the data or samples only

(Without 3D modeling component) we have to make 3D modeling components.

In making this 3D modeling there are some things that must be considered include:

a. Product form

b. Dimensional tolerances

c. Taper (draft angel)

d. Parting line

By making 3D modeling we will be obvious which parts are undercut

or which part should be installed insert. This is definitely going to be easier for us in designing

Each mold later finished the modeling component we must check it out.

B. 3D Mold Design

Modeling a complete mold for the CAM (based Assembly Design).

Some advantages of this modeling:

a. Details will be known contour

b. Checking Assembly Drawing

c. Help facilitate the making of the Master EDM

d. Processing section will be more informed about the total Assembly for the mold

5. Drawing Details

Drawing Details for part - the part that we can make before the standard 3D modeling completed by

Assembly Details Design reference, but for the parts that relate to the components must

drafting the form of 3D Mold Design.

We should detail this picture as clearly as possible and sekomunikatif possible, due to the

This image processing section will make the item / part of the mold that is ordered by the customer.

After completion of detailed pictures we shall check it before drawing down, by means of:

a. Check Item Details

b. Check the completeness of the image

c. Check the completeness dimension (especially in the image on the scale)

d. Check Assembly Item Details

e. Grab all the items details.

f. Discard all dimensions.

g. Paint with different colors.

h. Combine all items.

i. Check the details, if there are matching.

Once completed checked we can print these pictures to be sent to the Processing.

6. Checking

This checking process is checking a total of detailed drawings to 3D modeling usual

conducted by the Leader and co-leader is expected to more checks will further reduce

percentage of errors that can occur.

7. Order Materials

The ordering of material to play Cavity / Core can we order along with Assembly drawing

(After check all). Better-for ordering material did have to wait all

design has been completed in check, but by reason of the limited time (targeted delivery) usually order

material before drawing details completed.

8. Delivery Detail drawings and 3D Modeling

After going through the process of checking Details 3D Drawing and Modeling can be sent to the

Processing to include the Drawing List and Modeling List.

9. Monitoring mold process (stand-by)

Although 2D drawings and 3D Modeling has been sent to the processing, permanent monitoring is

of each item is made by using Part Control Sheet (because most know

about the details of the mold is designer itself). Expected to monitoring or

This check can suppress errors or forgetfulness factor in processing time.

Introduction to CAD / CAM #1

2014-11-29T22:13:00.001-08:00

Definition of Computer Aided Design (CAD):

Is a system design / design using computer equipment and specific design software, which allows the engineer to plan, model, and evaluate a model of a product / item accurately before production (manufacturing).

Definition of Computer Aided Manufacturing (CAM):

Is a system that automatically capable of producing the product / workpiece (finished product) through the use of computer-controlled machinery.

Why should CAD:

1. The design process requires a long time and the use of paper media perishable and difficult in storage.

2. The process of editing the design on paper or media image means the same as re-drawing process that takes a long time.

3. Equipment design required in making conventional picture very much and expensive (table drawing, tracing, rapido, mechanical pencil, ruler, etc.).

4. Product life cycle (Product Life Cycle) short take rapid product design to be able to compete in the market.

History of CAD Technology

1. The development of computers for design purposes since the beginning of 1960. In the past the field of design using drawing and tracing paper media and used in every school vocational and manufacturing industry.

2. In 1970 the CAD system has become a popular and widely used, but its development is still limited to 2D design.

3. In 1980, drawing a solid technology has become a popular application programs used in the design of CAD (RomulusTM, Uni-Solid Catia).

4. In 1982 Autodesk AutoCad 2D applications issued, then in 1988 introduced Pro Eng with the main feature modeling methods and parameters linked.

5. Beginning in 1990 the world know B-rep solid modeling kernels (application for manipulation of 3D objects topology geometry models), the application is then developed by various manufacturers of CAD applications.

6. Along with the advancement of age began to appear one application program design Solid Work 1995, Solid Edge 1996, IronCad 1998.

Element - the element of CAD

1. Hardware: hardware such as computers and other supporting devices.

2. Software: an application program executed by the computer

3. Data: in the form of structural information / data that are managed by software

4. Man: is the main element of any technological progress. Because the technology is sourced from the fulfillment of human needs.

PROGRESSIVE COMPUTERIZATION

2012-05-10T18:48:00.002-07:00

In the development of increasingly complex technology of plastic molding it needed a more precise manner, based software development is necessary in order to optimize results.

Mould design by CAD/CAM and CNC machine tooling have become indispensable to mould production, and the trend is accelerating .
We are shifting from the traditional art engineering to focus on technology, from the days when skilled craftsmen were the heart of production process to a system built around data captured in the CAD/CAM data base.
CNC machining of the moulds themselves is ever faster and more accurate, mould production is becoming a matter of having the right equipment.
Nevertheless, management must exercise extreme caution when introducing each new version of CAD/CAM and CNC equipment.
The new equipment must always be minimized and utilization of existing equipment maximized.
This is only practical approach.

CAD/CAM system involve both software and hardware, but improvements in software invariably lead to the need for faster, more powerful hardware to increase the speed and intelligence of the overall operation. Thus, we can easily foresee a growing trend toward systems that generate most of the information required for mould production at the CAD/CAM level.

This sort information base production system requires the standardization of mould design and machining. Mould machining, for example, requires careful definitions, then the creation of data base containing the most appropriate machining methods, tooling, and condition for any given mould from and contour. Given the trend towards faster delivery times, the entire production system must be based on an integrated information network.
To shorten lead times and detect problems quickly, to accomplish the shift in mould production from serialism to parallelism , the power of upstream processes to direct the entire operation must be strengthened.
The introduction of concurrent engineering into mould production will undoubtedly make production even faster while improving quality.

Hopefully the literature of the above considerations can be made and can make progress for the business world, thanks.

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TOLERANCE ZONE

2009-06-12T20:09:00.000-07:00

ISO Tolerances are indicated by letters an numbers.

There are 20 tolerance quqlities,which are indicated by number : 01,0,1,2,3,4......,18 (the bigger number the wider the tolerance-zone).

In each grade,the tolerance zone in creases with the basic size.

The letters give the position of the tolerance zone in relation to the 0-line ( zero-line ).

Capital letters are use for holes.
Small letters are used for shafts.
H,h- Tolerance touch the 0-line ( zero-line ).

FIT COMBINATIONS

A. Hole Basic System

All the Hole-Tolerances have zone H
Hole Tolerance : H
Matched with shaft Tolerance
Clearance Fits ; a,b,c,d,e,f,g,h.
Transition Fits : i,k,m.
Interference Fits : p,r,s,t,v,x,y,z,za,zb,zc.
Application ; Tool machines,Engines,Contruction for Vehicles etc.

B. Shaft Basic System

All the shaft Tolerances have zone h.
Shaft Tolerance : h
Matched with Hole Tolerance
Clearen Fits : A,B,C,D,E,F,G,H.
Transition Fits : I,K,M,N.
Interference Fits : P,R,S,T,V,X,Y,Z,ZA,ZB,ZC.
Applications ; textile machines,agricultural machines etc.

C. Comparison of the 2 Systems

Advantage of Hole Basic System : Production an control of shaft tolerances is not as difficult as those of holes.
Only a few toola as e.g reamer are necesary.
Advantage of Shaft Basic System : Usually shafts have not be machined,bright material can used.

EXAMPLEs of DIFFERENT ISO-Fits

CLEARANCE Fits

Description ; run with rel,much clearance
ISO Fit Basic Hole : H7/f6
ISO Fit Basic Shaft : h6/F7
Applications : crankshaft,piston,valves etc.
Description : run with rel,little clearance
ISO Fit Basic Hole : H7/g6
ISO Fit Basic Shaft : h6/G7
Applications : dividing heads,spindle bearings of machine tools etc.
Description : just sliding.
ISO Fit Basic Hole : H7/h6
ISO Fit Basic Shaft : h6/H7
Applications : tailstock,spindle sleeves etc.

TRANSITION Fits

Description : can be moved with little force.
ISO Fit Basic Hole : H7/j6
ISO Fit Basic Shaft : h6/I7
Applications : ball bearing fits,position pin etc.
Description : can be moved with middle force.
ISO Fit Basic Hole : H7/k6
ISO Fit Basic Shaft : h6/K7
Application : ball bearing fits,position pins etc.
Description : can be move with middle force
ISO Fit Basic Hole : H7/m6

ISO Fit Basic Shaft : h6/M7

Applications : levers on shafts,bearing bushes etc.

INTERFERENCE Fits

Description : can be moved with high force.

ISO Fit Basic Hole : H7/p6

ISO Fit Basic Shaft : h6/P7

Applications : levers on shaft,bearing bushes etc.(as above)

Description : not possible to move,shrink fit.

ISO Fit Basic Hole : H7/s6

ISO Fit Basic Shaft : h6/S7

Applications ; wheel rings,seat ring etc.

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Basic Mold Contruction/Design

2008-11-02T05:52:00.000-08:00

Basically the injection mold consist of two halves,one mold half contains the sprue bushing and runner system,the other half houses the ejector system.the molded part is located at the parting line.

The design of mold is determined by the molded part to be produced the following basic types exist;

* Parts without undercuts e.q.tumblers,bowls,comb.
* Parts with external undercut or side opening.e.g,spott core,treaded parts.
* Parts with internal undercut.e.q.threaded clousures,snap-in clamps.
* Parts possesing external and internal undercut,parts for fountain pens with internal and external treads.

+types of sprue gate.

+runner and gates in multy cavity mold.

+hot runner injection mold.

+stact molds.

+cooling.

+ejector system.

+venting.

+degating devises.

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