Rusk - the name of some auxiliary locking parts in the mechanisms and components of machines.
Content
- 1 Design
- 2 Materials and manufacturing technology
- 3 Maintenance and repair
- 4 See also
Design
In a crack joint, on the outer surface of one part there are two (or more) protrusions (of various shapes), and the other part has an inner
an annular groove with slots (according to the number of protrusions of the first part) to its end. When these parts are connected, the protrusions pass through the slots in the annular groove. Details rotate one relative to the other, and thereby ensures their connection.
A well-known application of crackers is the fixation of the engine timing valves.
| External Images | |
|---|---|
| Timing Valve Crackers | |
The outer surface of the crackers in the valve assembly of the gas distribution mechanism is conical and receives axial force from the valve spring. There is a downforce. Therefore, crackers are firmly held in engagement with the annular groove [1] .
Materials and manufacturing technology
The material of crackers are medium carbon or alloy steels. Rusks are obtained by turning as a whole, followed by cutting. A high-performance precision stamping technology has now been introduced.
| External Images | |
|---|---|
| Valve puller (desiccator) | |
Service and Repair
Dismantling of timing valves requires the dismantling of crackers, this operation is called a dry cracking. It can be performed with a special puller .
See also
- Bayonet connection
- β gas distribution mechanism. Valves . Modern car systems .