CP-6-series Mechanical Reference - 第236页

2. Placement Accuracy Measurement PAM, an acronym for Placing Accuracy Measurement, is a measurement procedure used to calculate and adjust the machine’s placing accuracy. Note: Use of the machine for long periods withou…

6. Select [SET] → [SERVO] to view the Z-axis motor pulse count and then manually

inch the Z-axis upwards until the dial gauge reads 0.3 mm.

7. Enter the resultant pulse count into Proper data.

[SET] → [PROPER] → [D1/D2/Z] → [ORIGIN] → [Zθ] → [SET].

8. Once the Zθ origin position has been registered at the machine side, ensure to

receive proper data to the host computer.

Note: When the machine is not in operation, there is nothing to prevent the XY-table damaging

the nozzle shaft at station 11. To avoid any unnecessary damage, always position the jig-

plate under station 11 when the cam angle is at 0°.

1.2 Zθ Adjustment (CP-643E)

Repeat the procedure for the CP-643E using the jig-plate below as opposed to the fiducial

jig-plate.

Note: The “-0.3 mm” spacer should be used for Z

measurement

-0.3 mm

CP6M7003

Part 7 Chapter 1 Z-Axis Origin Position (Z

)

Edition 1.5 7-1-2 CP-6-series Mechanical Reference

2. Placement Accuracy Measurement

PAM, an acronym for Placing Accuracy Measurement, is a measurement procedure used to calculate

and adjust the machine’s placing accuracy.

Note: Use of the machine for long periods without proper maintenance can reduce the original placing accuracy.

PAM can be used at such times to restore the placing accuracy to original levels.

PAM Kit

Please verify the contents of the PAM shipping container.

Overview

When PAM is started, a correction value for Station 11 (part placing station) Proper data

is calculated, and the ST11 Proper data is re-entered and saved in accordance with this

correction value. This data is also transmitted back to the host computer (F4G or MCS).

This ST11 Proper data acts to correct mechanical positional error (due to working and

mounting error amounts), resulting in a uniform correction. X and Y direction correction

values are entered for each nozzle. As the system consists of 20 heads with 6 nozzles per

head, this results in a total of 240 Proper data input items.

Item Name Quantity Model

Dummy parts for PAM 1 reel MPJ2220

Board for PAM 1 board K2096E(CP/IP/QP96-001)

Program FD disk for PAM 1 disk

Card ROM for PAM 1 card

Double-sided tape 1 roll Scotch Tape 666 25.4

CP6M7004

Part 7 Chapter 2 Placement Accuracy Measurement

Edition 1.0 7-2-1 CP-6-series Mechanical Reference

2.1 The Need for Station 11 Proper Data Calibrations

Corrections in Station 11 Proper data are required to counter the mechanical deviation of

each nozzle at Station 11.

Although it is possible to measure the nozzle centers of Station 6 with the parts camera, it

is impossible to measure the centers at Station 11. The placement position of parts will

be inaccurate without compensating for these mechanical deviations because, it is

impossible for each nozzle to stop at the exact same point.

As shown in this illustration, when a nozzle cannot move in a completely vertical

direction due to mechanical errors, the center of a part, as seen by the vision processing

system, and the actual center may not correlate.

The measurement performed by PAM involves a process in which dummy chips are

actually placed on a mark reference board, with the chip placement accuracy being

checked by a mark camera. Each nozzle is rotated to 0 degrees, 90 degrees, 180 degrees

and 270 degrees and the vision processing data for the placed parts then undergoes

statistical processing to provide an accurate measurement of the mechanical error

amount.

Nozzle

Decending

trajectory

Board

Part center detected

by Vision Processing

Part center

at placement

Part

CP6M7005

Part 7 Chapter 2 Placement Accuracy Measurement

Edition 1.0 7-2-2 CP-6-series Mechanical Reference