FP-2200 High Pressure Test Machine
Description
Designed for testing the geometry between match ground pin and body on automotive fuel injection valves the system is capable of testing various component variants without the need for tooling changes. The tests check the seat geometry as well as the valve clearance and the seat leakage of the component and verifies they are within limits. Complete component traceability is provided via a code read system which may be linked to a central production database. Robot loading allows for easy integration into production lines and the assembly and disassembly of components pre and post test. A touch screen HMI, offering an operator selectable interface, provides access to all the machine parameters (password protected) and provides feed back on the machine status and test results along with in-process SPC analysis of all tests. Detailed fault diagnostics, user friendly error/warning messages and event logging are provided by the HMI through an intuitive operator interface. Offline editing of the test parameters and pass and fail criteria may be carried out using Microsoft Excel©. At specified intervals, automatic over-checking of the machine may be called and operation halted if mastering is required. An automatic oil purge is activated at specified intervals as an additional over-check.
Multi Head Test Fixture
FP-2200 High Pressure Test Machine
Operation
The components are loaded into the machine in trays of 16, the machine being capable of holding 2 trays at a time. When a sequence is initiated the components are automatically loaded by the robot which picks the next component from the trays. The component is loaded to the orientation station where it is orientated ready for the test station. Following orientation the data matrix code is read and the information stored so the test results allied to the component at the end of the test sequence. The component is now loaded to the test station where all the required tests are carried out. Following testing the component is placed into a pass or fail pallet.
Test Sequence
Seat Geometry:
The geometry of a conical seat is checked by flowing oil through the component while increasing the load applied to close the valve pin. When the oil pressure reaches a pre-defined value, the load on the pin is recorded. The process is repeated at a second and higher pressure and the two results used to determine the acceptability of the seat geometry.
Valve Stem Clearance:
The flow of oil above the seat, between the valve pin and the valve body, is measured using a flow meter when the load applied to the pin and the oil pressure are at pre-defined levels. Both the load and the flow are servo controlled during the test.
Seat Leakage:
The load on the pin and the oil pressure are servoed to pre-defined levels and the flow below the seat is measured. Due to the low flow rates involved, a pressure rise is used to determine the flow rate. All component tests are conducted under oil to expel trapped air from the components prior to testing and for safety reasons.
Specifications
| Pressure: | Up to 2200 bar |
| Flow Measurement range: | 0 - 20 cc |
| Fluid Temperature Range: | 25 to 60°C |
| Pin Load: | Up to 400 N |
| Cycle Time: | Up to 6 tests may be performed on each component within 30 seconds |
| Component Clamp Force: | Up to 6 tonnes |
