Robot multi-model flexible welding line project

Robot multi-model flexible welding line project

1. Project name

Multi-model flexible welding line project

2. Project implementation time

May 2019

3. Project introduction

Models: 4 models collinear

Capacity: 33JPH

Robot: KUKA

Quantity: 77 units

Model switching form: seven-axis sliding table, tetrahedral hub assembly, accumulative loading table, visual automatic gluing system

4. Core technology

1. Four-vehicle flexible production line

2. APC, air friction conveying system, seven-axis sliding table, tetrahedral hub assembly, switching accumulative loading table, tetrahedral plane swivel system

3. Robot spot welding, robot arc welding system, robot visual gluing system, etc.

As one of the four major processes in the automotive industry, the welding process is self-evident. It shoulders the important mission of forming the body and providing a supporting frame for the vehicle. In addition to ensuring the appearance and shape, it must also ensure that all parts of the final assembly The precision of the component installation point, so its process is far more complicated than the other three major processes. The planning and layout of the production line not only need to consider from the aspects of precision assurance, production efficiency, distribution logistics, and storage, but are also limited by the plant area and structure, Existing conditions such as painting corridors. There is no perfect layout plan, only the most suitable layout plan at present.

As the most complicated process among the four major processes, the planning and layout of the production line can be summed up in several steps:

(1) Capacity calculation and beat determination;

(2) Selection of main line conveying mode;

(3) Splitting the process and determining the number of stations;

(4) Delivery method of side panel assembly;

(5) The structure of the assembly station;

(6) Logistics and warehousing planning;

(7) Plane layout and simulation verification.

1. Capacity calculation and beat determination

In the first step of planning, there must be the annual production capacity requirements input by the marketing department and the company's strategic planning department. According to the production capacity requirements, the production takt and single-station operation time are calculated as the main data for process splitting and determination of the number of stations. The calculation method as follows:

Production takt (JPH) - the number of units produced per hour.

Production days - 365 natural days, deducting national statutory holidays and weekends, the annual production days are roughly calculated as 251 days.

Daily production time - 8 hours for a single shift, 16 hours for a double shift, and 22.5 hours for a three shift.

Equipment operating rate—the effective operating ratio of equipment, the equipment operating rate of the welding workshop is generally set at 90% during planning.