CP643 系统参考.pdf - 第115页

1.12.2 Offset When Placing Parts A total of 120 nozzles (6 nozzle types on 20 heads) can be fitted onto the machine. The center placing point of each of these nozzles can in fact be misaligned based on the accuracy with …

1.12 Supply and Placing Unit Functions

1.12.1 Offset When Picking Parts

In order to be able to continually pick parts at the center of the part, the machine

compiles statistics on how far off center in the X-direction parts are being picked. This

information is then used to correct the pick-up position of parts subsequently picked

from the same device position. The three types of offset are described below.

• Automatic Offset

The results of vision processing are processed statistically and the pickup point is

changed accordingly. When a program is transmitted from the host computer or the

[CHANGE] command is used to change the program the offset values will all be

cleared.

These values are internally calculated automatically by the machine and cannot be

changed by the user.

• Device Offset in Proper Data (Device Offset 1 ~ 140)

If automatic offset is not functioning efficiently after a program has been changed,

such that pick-up from a specified device number is not possible, then Device Offset in

Proper data can be set to allow the part to be picked. Moreover, once Device Offset

has been set so that pick-up is possible, then the automatic offset operates to calculate

the center of the part.

• Parts Picking Offset in Part Data

When a part cannot be picked because of its peculiar shape, an offset can be specified

in Part Data to allow pick-up. Moreover, after the offset part is set so that it can be

picked, the automatic offset operates to calculate the center of the part.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-57 CP643E System Reference

1.12.2 Offset When Placing Parts

A total of 120 nozzles (6 nozzle types on 20 heads) can be fitted onto the machine. The

center placing point of each of these nozzles can in fact be misaligned based on the

accuracy with which the machine is assembled, the manufacturing accuracy of the parts,

or by nozzle bend. This misalignment is corrected by placing point offset values. The

different types of placing point offset values are as follows:

• Cam Speed Dependent Offset Y

Movement of the nozzle center in the Y-direction is compensated based on the cam

speed. (Cam speed 100, 90, 80, 70, 60)

• Nozzle Center Offset X

Movement of the nozzle center in the X-direction is compensated.

• Nozzle Center Offset Y

Movement of the nozzle center in the Y-direction is compensated.

• Nozzle Proper data X (A1 Place Offset X ~ T6 Place Offset X)

Amount of mechanical deviation of the X-coordinate placing point is compensated.

• Nozzle Proper data Y (A1 Place Offset Y ~ T6 Place Offset Y)

Amount of mechanical deviation of the Y-coordinate placing point is compensated.

Note: Refer to Chapter 3, “Command Descriptions“ in Part 3 “Commands” for command page

information concerning measurement of the nozzle center of rotation.

1.12.3 Tape End Display

When the supply of a part is about to run out the device number will display on the

monitor. Also, the signal tower lamp can be set to flash (the color depends on what is

entered in Proper data).

Clearing the tape end

When tape end is detected, the following actions will clear the status.

Program change: In joint mode and device change mode all devices must be cleared.

In changeover mode the tape and status of the device on the original

table must be cleared.

Parts Set switch: When parts run out during production in device change mode, once

the table has been loaded and the PARTS SET switch is set to

[COMPLETE], tape and status of the device on that table will be

cleared.

Tape End Detection switch:After the tape end the tape end sensor has detected the parts

again, the tape end status will be cleared.

Power ON: After the power has been turned on all the tape end displays will be

cleared.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-58 CP643E System Reference

1.12.4 Large Parts Pick-up Check

Inspection of whether or not the mounting parts have been picked up from the feeder is

performed at STN2. If pickup cannot be confirmed, the line stops immediately and a

device check is performed. If it is the end of the tape, "Parts out" is displayed. If it is not

the end of the tape, "Pickup miss" is displayed. This function is set in Part Data, allowing

it to be selected for each part type. If a part could not be picked and recovery is not set to

"error pass", the machine will attempt the recovery process at station 2 after 6 sequences.

How to set Part Data:

[PART DATA] Carrying_data

Carrying_data

14. Pickup_check : This data item chooses whether or not a large part pick-up check

will be carried out.

[Example] 14. Pickup_check Stop

1. Start the VPD.

2. Open the “Part Type Data” in the relevant part data.

3. At the [Pick up] - [Check] item, specify whether or not a large part pick-up check is to

occur.

Caution: The large parts pick-up check function is only concerned with parts whose thickness

exceeds 1 mm. The check function is not carried out for parts with a thickness

(registered in Part Data) of less than 1 mm.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-59 CP643E System Reference