JX-350_EPU使用说明书.pdf - 第225页

Glossary A − 4 “ Flexible 2 ” is valid for components with multiple symmetr y axes. “ Flexible 3 ” is used for irregular s hape components. “N o Def inition ” indicates that the system places t he component on a board ba…

Glossary

A−3

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Centering

Centering is a system that detects the position, angle, and picking position of the

component before placing the picked up component on the PWB, and corrects the

position slippage, and angle slippage of the component that are obtained from the above

actions in order to place the component on the PWB.

We have two types of centering. One is called "laser centering" and this system can be

used commonly in the FX-series mounters, KE-series mounters and the JX-series

mounters.

This system uses a dedicated laser unit to irradiate a laser beam to the component, and

executes centering while rotating the component, and thus it can determine the picking

slippage, angle slippage of the component in relation to the center position, and

correction will be made over those value of slippage.

It is also called Touchless centering because it does not touch the component except for

that picking.

The other system is Image centering, which is also called vision centering or VCS

centering. This centering system allows the mounter to inspect and place on a board a

component whose lead pitch is less than 0.65 mm (such a component cannot be

centered with laser) by using the dedicated camera.

(However, not supported in JX-350.)

The camera used in this operation is called a VCS camera. It is used mainly in

centering of QFP, PLCC, connector, BGA etc. and pitch, lead bend, lead length, ball

deformation inspection etc., for which laser is not effective, can be seen.

Further, use of the high-resolution VCS camera (0.3 mm VCS) can perform centering

placement of those components with smaller lead pitch (lead pitch of 0.3 to 0.4 mm).

This centering is similar to laser centering in the light of placement through correction of

slippage from the center position, angle of the component.

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Component data

Based on the Component name entered by the previous placement data, entry of

information of that component is made on the component data. In addition to the above,

setting of packaging style of the component, the speed of X, Y, Z, and θ when placing

the component, various checks, and inspection functions are made here.

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Component shape (“Comp Shape”)

The “Comp Shape” sets a shape of a component for the system to recognize it roughly

when it centers the component with laser.

There are eight component shape types to be recognized with laser: “No Definition,”

“Corner Square,” “Corner Cut”, “PLCC”, “Cylinder”, “Flexible”, “Flexible 2” and “Flexible

3.” The machine decides which type is to be set by checking the “Comp Shape” setting

you made on the Component data screen.

“Corner cut” is mainly used for a rectangular component such as a chip. “Corner Cut” is

used for a component whose corner to be recognized lacks some area whose cross

section is 0.25 mm or more as shown in the figure below.

“PLCC” is used exclusively for a special PLCC component whose recognized cross

section is unique. “Cylinder” is used for cylinder components without corner. “Flexible”

is used for polygonal components or other components that the laser recognition error

(shape recognition error) occurs through “Corner square”, “Corner cut”, or “PLCC”.

0.25mm or more

Glossary

A−4

“Flexible 2” is valid for components with multiple symmetry axes. “Flexible 3” is used

for irregular shape components. “No Definition” indicates that the system places the

component on a board based on the angle given according to the mechanical accuracy

of the machine without recognizing it with laser.

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Coordinate

Coordinates express the relation of X and Y to the origin, and for the mounter, the

left-hand direction viewed from the origin is −X, and the right-hand direction is +X, and

the upward (rear) direction viewed from the origin is +Y, and the downward (front)

direction is −Y, both on control and on data.

"On control" means that how the machine moves when we move the machine. For

teaching by OCC, for example, the 8-direction arrow buttons +X+Y on the teaching

screen are used to move the OCC to the upper right edge after putting the OCC at the

lower left edge of PWB in the PWB set status. The relation of +Y−Y is reversed for those

machines in which the Y-axis of PWB moves, such as KD-775 (dispenser).

"On data", it depends on the position at which the PWB origin (circuit origin) during

program preparation is to be placed.

For example, if we place the PWB origin (circuit origin) at the left bottom of the PWB

edge, the development of the BOC mark, placement position will be positive

development both for X, Y. On the contrary, if we place the origin at the right top of the

PWB, all X, Y will be negative development on data.

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Current memory

Current memory is the memory that is available at present. In a mounter, two or more

files cannot be opened simultaneously, and it has only one current memory.

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Data compatibility

Data compatibility means that a production program prepared by Machine A, for example,

can be read by Machine B. Between KE series and KD series, Upward compatibility is

effective.

“Upper compatibility” means that the program created by KE-750/760 can be read by

JX-350.

Conversely, the data created by JX-350 can sometimes be read by KE-750/760 (lower

compatibility). (Depending on the main unit version of each machine)

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Directory

A directory indicates the address in which a file is stored, and directories are divided into

two.

First, [A] and [D] that is placed at the top of directory is called a root directory.

A root directory indicates the very root or the source, and if a root directory is [A], for

example, you can recognize it to be the FDD, and if it is [C], you can recognize it to be

the HDD.

In JX-350, the directories such as [Data] and [Prg] are provided in advance. To put it

shortly, a directory indicates the “address” of a file, and if we open [Read file] etc., for

example, we will see [D:¥ PRG] etc. in the directory list. Seeing this, we will understand

that it is on the hard disk because the root directory is D. Next, when we see :¥PRG,

we can see what files are stored in this dwelling place, or this directory. A number of

branches are found in the same hard disk, like this, allowing easy file management and

distinction by applications. In addition, the users can create new directories by

themselves.

Glossary

A−5

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EPU

An abbreviation for External Programming Unit.

JX-350 production program is input on a personal computer, and it is used by the

equipment main unit via a USB.

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Extension

Extension means the format of a file. When a file is named, the file name comes after

the directory, and further follows an extension. Incidentally, each machine will add an

extension as follows:

(directory) (file name) (extension)

JX-350 ⇒ D: ¥○○¥○○

¥ JUKIDATA. X11

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Feed

Feed indicates the component feed of tape components, stick components, and bulk

components.

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Feeder (and similar units)

A unit that supplies electronic components to be mounted on a printed wiring board.

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Feeder bank

Feeder bank is a bench on which a feeder is mounted.

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Head (unit)

A unit that takes out an electronic component from the component supply section and

place it on a printed wiring board.

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HMS

An abbreviation for Height Measurement System. Equipment to measure the

component picking height of.

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HOD (handheld operation board)

An abbreviation for Handheld Operation Device, which is used in teaching. This unit

can move and control the placement head, OCC and other devices. This is a

factory-set option, and it shall be selected prior to shipment.

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I/O safety direction setting

A series of processing including returning nozzles to the ATC, clamping and releasing the

PWB, moving the Z-axis to the safety height, etc. This function should be preferably

executed except the case in which interference occurs with other unit if the head moves

even a little.

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IC mark

A positioning mark provided in the vicinity of mat of those components that need high

accuracy of placement, such as fine-pitch QFP. It is also called a local fiducial mark.