Broaching Machine 

What are the Advantages and Limitations of Broaching Machine?

Advantages of Broaching Machine Broaching has been adopted for mass production work. It has following features and advantages: Rate of production is very high with properly applied broaches, fixtures and machines, more pieces can be turned out per hour by broaching than by any other means. Little skill is required to perform a broaching operation, in most cases the operator merely loads and unloads the work piece. High accuracy and high class of surface finish is possible. A tolerance of ±0.0075 mm and surface finish of about 0.8 microns can…

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Broaching Machine 

What are the Broach Elements?

Ordinary cut broaches for machining previously drilled holes consist of the following elements: Pull End – This is designed to permit engagement of the broach with the broaching machine through the use of puller head. Front Pilot – This centres the broach in the hole before the teeth begin to cut. Roughing and Semi Finishing Teeth – These remove most of the stock in the hole. Finishing Teeth – These are for sizing the hole and must have the shape required for the finished hole. Rear Pilot and Follower Rest…

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How Many Types of Broaching Machine are there?

There are four types of broaching machine: Horizontal broaching machine Vertical Broaching machine Surface broaching machine Continuous broaching machine Horizontal Broaching Machine All horizontal machines are of pull type. These may be used for either internal or external broaching. The horizontal broaching machine consists of a bed more than twice the length of broaching stroke. The broach pilot gives drive for pulling the broach. Horizontal broaching machines are primarily used for broaching key ways, splines, slots, round holes and other internal shapes or contours. These machines have the disadvantage of…

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What are the Main Parts of a Broaching Machine?

Ram – It is actuated by the piston in the cylinder of the hydraulic drive. It moves to and fro during the operation. In case of pulling type of broaching machine the ram pulls the broach with the required pressure for cutting stroke and goes inside the ram head.   Hydraulic Drive – It is housed in the base and powered by electric motor. This provides the required pressure for pulling or pushing the broach. Bed – Bed is the robust casting on which the main units are mounted. The…

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What is a Broaching Machine?

The term broaching may have been derived from an ancient roman word braccus, which meant an object having projecting teeth. The operation started in the year 1850 when broaching tools were called “drifts”. These drifts were being hammered in blacksmith shop through the work or pushed through with an arbor press. Broaching is a method of removing metal by pushing or pulling a cutting tool called a broach. The tool may be pulled or pushed through the surface to be finished. Surface is finished by broaching flat or contoured and…

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