What is Broaching?
Broaching is a machining process that pushes or pulls a cutting tool (called a broach) over or through the surface being machined. Broaches are referred to as multiple-point linear-travel cutting tools and are used to produce flat, circular, and even extremely intricate profiles, as seen from a section perpendicular to the tool travel. A broach is a series of single-point tools arranged successively in the axial direction along a tool body or holder. Each sequential tooth varies in size and shape in a manner that allows each tooth to cut a chip of the proper thickness. The shape and spacing of each broach tooth is determined by the length of the part being broached, the amount of material being removed by each tooth, and tonnage restrictions of the broaching machine. The chip space between each tooth is designed to sufficiently accommodate the volume of chips generated. The concept of broaching as a legitimate machining process can be traced back to the early 1850s. Early broaching app
• Broaching is the process of efficiently removing material, shaping and/or finishing metal parts constantly and precisely in quantity. • Broaching is one of the most productive precision-machining processes available. • Broaching is a machining process that pulls or pushes a cutting tool over of through a surface being machined.
broaching (broching) the process of efficiently removing material, shaping and/or finishing metal parts consistently and precisely in quantity. Generally when we think of metalworking, or metal cutting we think of traditional machinery such as mills, drills, lathes, or grinders. Broaching is a more specialized, efficient way to remove material, shape, or finish specific metal parts. It is particularly effective, efficient and profitable when the demand is for high-volume, close tolerance, precision work. It is also an excellent method. Sometimes the only method. For working a part that has an unusual or intricate configuration or shape. The heart of any broaching operation is the tool itself and the design of the tool is all-important. Broaching tools are almost without exception, individually tailored to the job. They cannot be picked off a parts shelf, they have to be designed and manufactured for specific functions. The tool consists of a series of teeth or cutting edges in fixed re
Broaching is the machining process of cutting a shape by moving a broach cutting tool, usually just called a broach, over material such as metals or plastics. The broach’s rows of teeth, or chisels, progressively increase in size. Each tooth removes the excess material gradually and the desired shape is complete only after the final broach tooth has passed through the material. The shape found in an internal keyway in a pulley or gear is the most common shape produced by broaching since broaching is the simplest method of cutting internal forms known as splines on gears, sprockets, and hubs. Polygons such as squares are also commonly and easily produced by a broach, especially when a round hole needs to be enlarged into a square or other non-circular shape. Sometimes, broaches are also used to cut external shapes such as slots. Interestingly, due to the effectiveness of their original concept and design, today’s broaching machines and processes have remained mostly the same since the s
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