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Cover Installation and Fastening at Robotic Assembly Station

IP.com Disclosure Number: IPCOM000043721D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 3 page(s) / 45K

Publishing Venue

IBM

Related People

Hecker, EP: AUTHOR [+2]

Abstract

This article describes a robotic assembly station capable of assembling two different products on a single manufacturing line. Each product consists of a rectangular box-type chassis and a cover which must be slid onto the chassis in the hoizontal plane. The chassis and cover are fastened together by driving screws into the rear of the chassis. The two products differ in size, weight and the number of screws required to fasten the cover to the chassis. Each product, however, requires the same general type of cover installation and fastening procedures. The drawing shows the assembly station which consists of three programmable robotic systems and four conveyors working together to select, transport, install, and fasten covers onto the chassis.

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Cover Installation and Fastening at Robotic Assembly Station

This article describes a robotic assembly station capable of assembling two different products on a single manufacturing line.

Each product consists of a rectangular box-type chassis and a cover which must be slid onto the chassis in the hoizontal plane. The chassis and cover are fastened together by driving screws into the rear of the chassis. The two products differ in size, weight and the number of screws required to fasten the cover to the chassis. Each product, however, requires the same general type of cover installation and fastening procedures. The drawing shows the assembly station which consists of three programmable robotic systems and four conveyors working together to select, transport, install, and fasten covers onto the chassis. Referring to the drawing, the operational flow of the assembly station is set forth in the following steps: 1.

The exit gate G3 is lowered to clear the station of any assembled or partially assembled products. 2. The staging gate G2 is raised, the entry gate G1 is lowered, and the chassis conveyor C4 is turned on. 3. The station waits for a pallet P containing a chassis to reach the staging position P5 on the chassis

conveyor C4. 4. The presence of the chassis is detected by the

chassis detector D5. 5. The chassis-type detector D6 then detects the

height of the chassis, indicating its type. 6. The staging gate G2 is lowered, and the chassis conveyor C4 is turned on. 7. Once the chassis has left the staging position P5, the staging gate G2 is raised and the entry gate G1 is

lowered to allow the next chassis to enter the staging

position P5. 8. Once the chassis arrives at the assembly position

P6 and is detected by the assembly detector D4, the chassis

conveyor C4 is turned off. 9. All three robotic systems are connected to the chassis-type detector D6 since each robotic system must take

a different action based on the chassis type. As soon as

the cover-select robotic system R1 detects the type of

chassis in the staging position P5 (step 5), it selects the

appropriate cover either from the pickup position P1 on

cover input conveyor C1 or from the pickup position P2 on

cover input conveyor C2. The presence of a cover in either

pickup position, P1 or P2, is sensed by the appropriate

cover detector, D1 or D2. 10. Once the appropriate cover has been selected, it is placed at position P3 on the cover transport conveyor

C3. Conveyor C3 is then turned on. 11. As soon as the presence of the cover is...