What are the two main categories of machine movement?

What are the two main categories of machine movement?

Motions. Power. Type.

What are the different types of guards?

There are four general types of guards:

• Fixed.
• Interlocked.
• Adjustable.
• Self-adjusting.

What are the three main areas of a machine?

Machine Guarding eTool | Introduction. All machines consist of three fundamental areas: the point of operation, the power transmission device, and the operating controls.

What machine parts always require guards?

The shafting, flywheels, pulleys, belts, chain drives, etc. of power transmission apparatus less than 7 feet from the floor or working platform must be guarded.

What are the minimum requirements for protection and guards?

Guards must meet these minimum general requirements:

• Prevent contact. The guard must prevent hands, arms, and any other part of a operator’s body from making contact with dangerous moving parts.
• Secure.
• Protect from falling objects.
• Create no new hazards.
• Create no interference.
• Allow safe lubrication.

How many types of machine guards are there?

Mechanical, electrical, hydraulic or pneumatic systems are used to actuate the guard. The mechanical interlocking of a power press, card machine and electrical (limit or microswitches) interlocking of headstock covers of many textile machineries are such examples.

What is used to cut the materials?

Implements commonly used for cutting are the knife and saw, or in medicine and science the scalpel and microtome. However, any sufficiently sharp object is capable of cutting if it has a hardness sufficiently larger than the object being cut, and if it is applied with sufficient force.

Which carbides are used for cutting tools?

Cemented carbide is a hard material used extensively as cutting tool material, as well as other industrial applications. It consists of fine particles of carbide cemented into a composite by a binder metal.

How can I improve my tool life?

How to improve tool life in turning

1. Reduce cutting speed, vc (to reduce heat)
2. Optimize feed, fn (for shortest cutting time)
3. Optimize depth of cut, ap (to reduce the number of cuts)

What are the causes of tool wear?

Abrasive wear is basically caused by the impurities within the work piece material, such as carbon nitride and oxide compounds, as well as the built-up edge fragments. It is a mechanical type of wear. It is the main cause of the tool wear at low cutting speeds.

What are the types of wear?

There are four basic types of wear: adhesive, abrasive, corrosive, and surface-fatigue.

What is notch wear?

Notch wear is another form of tool wear, which occurs at the depth of cut line as the tool rubs against the shoulder of the workpiece. This occurrence leads to abrasion on tool surface and chemically affects the cutting tool that possibly causes failure of the cutting tool.

What is Tool signature?

Tool Signature • The numerical code that describes all the key angles of a given cutting tool. A tool signature may be used for HSS or carbide inserts. It indicates the angles that a tool utilizes during the cut.

What are the types of chip formation?

Basically there are three types of chips produced in the metal machining and these are continuous, discontinuous and continuous with built-up edge.