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METALWORKING EQUIPMENT INNOVATIVE TECHNOLOGY
AND TOOLS
its operational properties. With increasing L, the ability of the compound decreases to perceive The use of Delcam reverse engineering
the load without significant movements (see paragraph 2 of the conclusions). The relationship
between the tool overhang and the critical value of the radial load can be quite accurately technology to reduce the complexity of
approximated by the dependence, where [МHSK] is the bending moment in the HSK joint that is
permissible for axial and angular displacements, which is characteristic for each joint size. machining mold- The machining of complex forming

forming surfaces of surfaces of die tooling and foundry molds is
a long and time-consuming process. If the
molds tooling is made on a CNC milling machine
from a workpiece of complex shape, additional
difficulties may arise during processing due
to a mismatch of the actual shape of the
workpiece (!) with its calculated CAD model
engineered by the designer. To reduce the
processing time on a CNC machine, minimizing
the number of tool passes at working feeds is
required outside of the zone of its contact with
the workpiece (the so-called ‘‘air cutting‘‘).
The resulting reduction in machining performance can be especially great if the tooling is made
of hard-to-work material (for example, high-strength steel, bleached cast iron, heat-resistant
alloys, etc.), since any unforeseen cutting at high feed can lead to breakage of the cutting tool
or components machine, as well as the marriage of the workpiece itself. At the same time, an
excessively large actual allowance leads to a significant reduction in tool life. Therefore, one of
the effective methods to reduce processing time on a CNC machine is to take into account the
actual form of a particular workpiece even at the stage of developing the control program for
the CNC machine.

L.Ya. Gilova, Ph.D., Associate Professor, Specialists of the Izhevsk stamp and mold factory IzhREST (www.izhprest.ru) encountered
V.V. Molodtsov, Ph.D., Associate Professor. problems due to the discrepancy between the actual shape of the workpiece and its theoretical
MSTU STANKIN, Machine tools department
CAD model. The overall dimensions of the blanks (Fig. 1) were more than 1200x900x500
References: mm, and the processing time of the forming surfaces on the CNC machine exceeded 200
hours. During the processing of workpieces made of heat-resistant alloys of grades EP-202
1. Ukrazhenko K.A. Development and research of stiffening methods and quick-change tooling systems of multi-purpose
machines. The dissertation for the degree of Doctor of Technical Sciences. Moscow, MSTU N.E. Bauman, 2007, 435 p. and ZhS6-U, increased wear of the cutting tool was observed due to uneven allowance of the
2. Belyaev M.P., Molodtsov V.V., Shugaev S.A. Study by methods of simulation modeling of operational properties of the machined material, and low efficiency of control programs was noted due to the numerous
connection “spindle - tool holder‘‘of CNC machines // STIN, 2009 No. 8, pp. 7 - 13. passes of the tool at working feeds outside the contact zone with the workpiece.
3. Gilovoi L.Ya., Molodtsov V.V. Study of the effect of centrifugal forces on performance properties of HSK compounds by
simulation methods. // STIN, 2011, No. 12, pp. 2-6. To search for possible methods to increase the efficiency of mold processing by the
4. Gilovoi L. Ya., Molodtsov V.V. Study of the bearing capacity and stiffness of HSK compounds by simulation methods. // IzhREST plant, employees of the FSBEI HPE IzhSTU named after M.T. Kalashnikov‘‘(in the
Technology of mechanical engineering, 2016, No. 2, pp. 27 - 32. framework of contractual work). This university has not only qualified personnel, but also the
necessary equipment and software.
To build the actual 3D model of the workpiece, the enterprise was asked to use the
reverse engineering method implemented using the PowerSHAPE Pro CAD system (developed
by Delcam, www.delcam.com). The physical prototype can be digitized using various coordinate
CREATE A BETTER FUTURE measuring machines and 3D scanners. Based on the scanned points, the exact actual CAD

TOGETHER WITH OUR CUSTOMERS model of the workpiece is built, which is subsequently used along with the 3D model of the
finished product to develop control programs for the CNC machine. This allows you to evenly
distribute the machining allowance and minimize ‘‘air cutting‘‘, which significantly reduces the

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