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.
