SIPLACE Vision Customer_en.pdf - 第45页

Component Shapes Overview of Component Shapes Which Require Separate Grou p Descriptions Component Shape Description Rules S tudent Guide SIPLACE Vision (Customer) Edition 12/2008 EN Component Shapes 45 The X/Y body dime…

Component Shapes

Component Shape Description Rules Overview of Component Shapes Which Require Separate Group Descriptions

Student Guide SIPLACE Vision (Customer)

Component Shapes Edition 12/2008 EN

CO Height

The overall height Z (with lead 1) is used to calculate the Z-axis speed profile during (pickup and)

placement; to calculate the camera focal levels; the focus height position for the Coplanarity option and

the Z-position for the gantry positioning during placement with the TWIN head.

 To define the heights of through-hole contacts, centering and locking pins, each case must be

considered individually and requires exact knowledge of the dimensions!

CO thickness

The Z body size (CO thickness 2) must be correctly programmed for the CO sensor installed in the C&P

20 head or for the CO sensor option on the DLM 1/2 C&P 12 head. In addition, take care that the height

is described correctly, so that the combination of CO and nozzles can be brought into the correct focal

range of the CO camera. The ICOS descriptions could include body dimensions with intermediate

values, by which the tolerance levels were set relatively high (common CS for R and C). In reality, these

values are the same as the overall Z value, since the additional lead heights are within the set height

tolerance.

Z body dimensions (component center height )

The Z body dimension (component center height ) must be described correctly, to guarantee various

functions, particularly the following:

 Height measurement:

By the CO sensor on the C&P20 head or for the CO sensor option on the C&P12 head (DLM1 & 2).

 Component measurement:

So that a combination of components and nozzles can be brought into the correct focal range of the

component camera.

 Reliable pickup and optimum placement speed:

Overall height (with leads) is needed for calculating the Z-axis speed profile.

NOTE: In ICOS descriptions, the Z dimensions are not specified correctly. The tolerances were then set

appropriately larger.

Standard SMD CO

1. CO Height

2. CO thickness (for CO sensors)

Socket SMD CO

1. CO height (if the component height is programmed as

high as the socket edge, this is to be programmed as

a positive (!) Z pickup position correction (inner depth

of socket). (This may be necessary for the

precedence finder from SIPLACE PRO 6.0)

2. (2) CO thickness (for CO sensors)

Special CO in PCB cuts-outs

1. CO Height

2. CO thickness (for CO sensors)

Component Shapes

Overview of Component Shapes Which Require Separate Group Descriptions Component Shape Description Rules

Student Guide SIPLACE Vision (Customer)

Edition 12/2008 EN Component Shapes

The X/Y body dimensions

 The X/Y body dimensions are now understood to be dimensions for the plastic body (1).

Based on the calculated overall body dimensions, the camera field of vision (2) or so-called Region

of Interest (ROI) is set.

The component tolerance and packaging tolerance are taken into account in this calculation.

The component body is not measured optically. The dimensions are only needed to produce a

diagram for better assessment.

Angle of component

 CS testing is normally performed at a definition angle of 0°.

However, the presentation angle can be adjusted in 90° steps for CS testing at any heads.

The optical centering of components is always performed in the pickup position when using DLM

C&P6/12 heads.

Optical centering for Twin heads is performed in the placement angle (next possible 90° angle).

When using the C&P20 head, optical centering is performed in the placement angle (next possible

90° angle).

Polarity detection - inspection mode

 SC Bearbeitung des Kamerabildes 02 0305 SIPLACE Vision supports Pin 1 detection, provided

optically recognizable asymmetries have been programmed.

 The selection of inspection mode in SIPLACE Pro applies only to SIPLACE Vision (not for older

Vision systems).

The programmed polarity parameters are shown in the board or setup CO displays, in graphics

mode. However, this does not affect the measurements in the Vision system.

Lead lengths

Provided the leads are aligned towards the outside, the lead lengths are added together with the body

dimensions to give the overall dimensions of the component shape. The overall dimensions can be

viewed in the component shape geometry menu. These values can not be edited.

 Once the body dimensions for unleaded CSs have been successfully measured, you can generally

assume that the component has been correctly recorded and that it is not in an upright position or

tipped to one side on the nozzle.

Legend

1. X/Y dimensions of component body (without

leads)

2. Restricted camera search field, so-called.

Region of Interest (ROI)

3. Camera field of vision

Component Shapes

Component Shape Description Rules Lead Shapes

Student Guide SIPLACE Vision (Customer)

Component Shapes Edition 12/2008 EN

5.2.1 Lead Shapes

The lead shapes generally have predefined English names.

Gullwing, J-Lead, Wraparound, Ball (for BGAs) and Column are the most common examples.

Lead angle

The lead angle is the angle at which the lead protrudes from the component body. Leads which point

towards the Y-axis (upwards) have an angle of 0°, although 90° was defined in the line computer CS

Editor.

The lead angle specified in SIPLACE Vision depends on the lead type. You need to specify the position

of the lead end.

The diagrams below each show the edge of a component body, with leads. The orientation of the lead

end in its 0° position is marked with a dot.

Blob - special features

The Blob (binary large object ) stands for a lead shape or structure which is saved as a graphic. It can

not be adequately described with the typical dimensions (e.g. lead width and length). In this case,

SIPLACE Vision automatically determines the characteristic contours for measuring the structure.

Overview of lead shapes

Gullwing: J-Lead: Wraparound: Blob:

Lead shape Typical CO Comment / special features

Wraparound: Chip / Melf /

(Moulded)

The surface or metal surface (often as wide as the body) of

this lead shape is folded around the edge of the component

(except with the type Moulded).

Wraparounds are defined only by the visible lead length. This

can be dark or bright!

The ends of the Wraparounds may contain notches, see

Gullwing.

Gullwing: Soxx / QFP The JEDEC description JESD30-B applies for this lead

shape. This indicates a thin lead, which is curved from the IC

surface to the contact surface. The contact length is always

shorter than the lead length. The ends of the Gullwing leads

may contain notches, in which case the CO can be described

as nonstandard.

J-Lead: PLCC / SOJ The J-shaped pins are curved into cavities under the body

surface. Only select this if the pins have the correct shape. J-

Leads are defined only by the visible lead length.

Balls: BGA Hemispherical leads under the CO body surface.

Columns: CCGA Column-shaped lead points under the component body

surface.