JX-350_EPU使用说明书.pdf - 第231页
Glossary A − 10 • PWB data In the PW B data, enter t he recognit ion method when BOC mark s are used, and PW B inform ation such as PW B home position. W hen BOC mark s are used, t he inform ation on mark s is transmit t…
Glossary
A−9
•
Pick Data
Pick Data is the place to save the information on the picking position at which each
component is to be set. The accurate pick position is obtained by "Coordinate teaching"
using [Teaching] of the function bar.
•
Picking
Picking means a series of action for the head to take a component from the tape or tray
in such a manner that the head moves to the picking position, and then picks up the
component by means of vacuuming, which is the reason why it is called picking.
•
Pin reference (Not supported in JX-350)
“Pin reference” is a board transport mechanism as well as “Shape reference,” and one of
methods for fixing a board. It is a kind of fixing method for production by fixing the
PWB with a pin. Basically, two pins (called the reference pin and the follower pin),
which are provided for standard, are inserted to a PWB that has two holes with the
diameter of 4 mm in order to fix the PWB.
•
Pitch
Pitch basically indicates the dimension from a center to another center of something to
be viewed. For a lead pitch, enter the X, Y dimensions of the center of a lead to the
center of the adjacent lead, and for a pitch between circuits, enter that of the center of a
circuit to the center of the adjacent circuit.
•
Placement
A series of actions made by the head to move the picked up component onto the PWB
and to put the component on the given position of PWB is called placement.
•
Placement data
Based on the PWB origin, which has been set by the previous PWB data, the
information on a placement point is entered in this placement data. The accurate
placement position can be obtained by "Coordinate teaching" using [Teaching] of the
function bar.
•
Placement station
A PWB positioning section. This is a unit that fixes a printed wiring board to the given
position.
•
PLCC
An abbreviation for Plastic Leaded Chip Carrier. Also expressed as QFJ.
A component with J-shaped leads each on four sides. Components of this type are
suitable for automatic placement owing to its high lead position accuracy and resistance
to deformation.
•
Program (production program)
This is an aggregation of commands and mounting position data to mount electronic
components on a printed wiring board.
Glossary
A−10
•
PWB data
In the PWB data, enter the recognition method when BOC marks are used, and PWB
information such as PWB home position. When BOC marks are used, the information
on marks is transmitted to the machine by "Recognition teaching" using [Teaching] of the
function bar.
•
PWB origin (the coordinate origin)
PWB origin is the origin to develop a BOC mark, a placement center position and so on.
Although we do not have any specified position for the PWB origin, it should be basically
placed on the PWB. If CAD data is present, the CAD origin will be the PWB origin on
the program. The coordinate system basically takes the left-hand direction as −X, the
right-hand direction as +X, the upward direction as +Y, and the downward direction as −Y
viewed from the origin.
•
QFP
QFP (Quad Flat Package) means a component of gull-wing shape with leads in four
directions. The lead pitch is more shortened as the number of pins increases. It is
featured by that it is a small package suitable for products with a number of required
leads and that appearance inspection of solder connections is easy.
•
S-VCS (Not supported in JX-350)
S-VCS (Scanning Vision Centering System) is vision recognition control in which the
head picking up a component is moved in the X direction on VCS to perform vision
centering. Higher-speed recognition can be attained as compared with the existing
vision recognition.
•
Shape reference
In JX-350, the shape reference is a mechanism related to transport attached to the
mounter as standard, being a PWB fixing method like the pin reference.
Basically, it is used for the purpose of fixing a PWB that does not have a hole for pin
insertion.
Incidentally, both pin reference and shape reference cannot be used simultaneously.
•
SOJ
SOJ (Small Outline J-bend Package) means a component of J-bend shape with leads in
two directions. It is featured by high resistance of leads against deformation, easy
handling, and low thermal resistance.
•
SOP
SOP (Small Outline Package) means a component of gull-wing shape with leads in two
directions. The features are: small size, small mounting area on PWB, easy visual
inspection of soldered connections and also easy correction with soldering iron.
•
Square chip
A square chip means a square component or similar one such as 1005 (width of 1.0 mm
× height of 0.5 mm) and 1608 (width of 1.6 mm × height of 0.8 mm). Square chips
include different types such as resistance and capacitor.
Glossary
A−11
•
Support pin/Longer sized support unit
A jig to correct the underside warp of PWB when a PWB is clamped.
Setting of this pin/unit is conducted during production setup.
•
Support table
A unit to support the printed wiring board.
•
Teaching
Teaching is to acquire coordinates using an HOD, also using OCC, head etc., and
basically, it is broadly divided into two types of teaching.
One is Teaching of coordinates, which means to acquire the location of specific unit's
position (shape reference position, placement position, etc.) using an OCC etc. and
make the machine learn the data.
The other is Teaching of recognition, which mainly performs BOC mark and IC mark's
shape, size, and contrast adjustment and setting of detection area and others using an
OCC etc. in the same manner in order to teach the machine.
For both of the above, the information of the coordinates and marks acquired by
teaching will be reflected in the production program.
•
Tray holder
A tray holder is equipment to supply tray components, and this item is supplied at
customer's option. A holder is used in production by attaching the holder to the feeder
bank on the rear, and putting tray components together with the tray on the holder. The
program allows maximum 20 types of trays to be attached to the holder.
•
Tray station
A tray station is equipment to supply tray components, and this item is supplied as a
factory-set option. This station is used for production by attaching it on the rear side
and putting tray components together with the tray on it. The program allows maximum
20 types of trays to be attached to the tray station.
•
VCS (unit) (Not supported in JX-350)
This unit recognizes the shape of an electronic component (with leads or balls) and
measures the retaining posture.
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.
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 optional 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),
where this is an option to be set at the factory. This centering is similar to laser
centering in the light of placement through correction of slippage from the center position,
angle of the component.