Faculty of Engineering
University of Kragujevac
Electro-mechanical broaching machine
Profesor:
Student:
Sandra Stefanović
Asad Masad
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Abstract
Broaching is a process of metal cutting. It is about operation in one pass. The tool is broaches and
has several cutting edges. In next presentation will be explain type of tools, procedures of
treatment, methods of treatment and others. The machine used for this treatments is broaching
machine and the thesis provides a systematic model of vertical broaching machines.
Key words:
Broaching, broaching tools, broaching machine
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1. Introduction
Broaching operation represents metal processing, where the processing is done in one pass. The
tool is broaches and designed to linearly passes perpendicular to the workpiece in the direction of
the axis of the tool. The relative movement of the tool through the workpiece provides broaching
machines (Broaching). The tool can be pushed (which is less common method of treatment), or
drawn through the workpiece. Broaching can be internal (when the tool handles the inner surface of
the workpiece) or external (when the tool processes the outer surface of the workpiece).
Technology-through processing is explained in the second chapter describes the kinematics-
through processing where we can see the position of the tool in the treatment of internal and
external broaching, broaching types, methods and types of broaching and cutting scheme.
The third chapter describes the machines for broaching of some manufacturers and their main
characteristics, the tools in the processing of broaching and their basic structural elements. Also the
choice of form space between teeth, chip breaker and handles broaches (for internal and external
broaching).
Based on the above characteristics and broaching broaches the fourth chapter was used for
modeling the electro-mechanical parts Broaching, or gear and rack, chuck tools, pole mount and an
electric motor, in the program CATIA V5R21. Before ten or more years with the Faculty of
Mechanical Engineering, professors decided to construct broaching machine, whose made almost
all the elements of the machine and it is not finished yet. Broaching is modeled according to the
already existing elements.
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2. Proccessing of broaching
The processing of broaching characterized by high productivity in terms of high series and mass
production and high productivity of machining processes. Despite the simple kinematics
processing this treatment process is one of the most complex processes of metal processing. The
reasons are in the fact that the processing of broaching usually finishing operation and that
processing is performed at very high values of loads of tools and machines. In this connection, the
entire machining system (tools, machines, compression fittings) should be characterized by high
levels of static and dynamic stability. Due to the high cost of tools, broaching applies only in
standard, high series and mass production (Nedić, 2007).
In most cases, processing is performed by passing the linear movement tools. The workpiece do not
perform support the movement, because support movement actually does not exist, except in some
special cases (helical broaches). Support motion in some way is incorporated in the tool itself.
Processing is carried out by drawing a tool, rarely repression, along the axis of the workpiece. In
Figure 2.1 are presented processing scheme for internal and external broaching with numbered
positions. In position 1 is broaches, position 2 guides, 3. work desk, 4. the workpiece (Nedić,
2007).
Figure 2.1 Scheme of processing by broaching a) internal, b) external (Nedić, 2007)
