Two grinding wheels are used for the simultaneous machining of two pin bearings, reducing the cycle time.
Compact design: The enclosure also contains the electrical cabinet and the energy container. The machine can be equipped with an automatic loading system.
Easy access to the PMD 2 crankshaft grinder components
In automotive production terms, the costs incurred in the manufacture of passenger cars need to be reduced by three to four percent per year to retain current profitability levels - according to a McKinsey study. But what does this mean when it comes to manufacturing technologies? The example of the crankshaft clarifies the point. Here, a lot depends on the grinding process carried out on this core engine component. In the future, the process needs to be of greater precision and subject to an even higher degree of efficiency. The grinding engineers at EMAG offer an alternative in their PMD 2 Crankshaft Grinder. "This machine from EMAG NAXOS-UNION provides for high output rates," said a company spokesperson.
EMAG, with headquarters in Salach, Germany, has developed grinding solutions for shaft-type components. The new machine PMD 2 complements its crankshaft grinder program. It is designed for the machining of crankshafts for passenger cars and features twin grinding heads that allow for the simultaneous grinding of two pin or main bearings in a single set-up, using two grinding wheels. Its capacity covers small components of up to 500 mm length. "With this machine we are rounding off our range of crankshaft grinders to include the machining of smaller components," said Dr. Guido Hegener, Managing Director of EMAG Maschinenfabrik GmbH. "Up to now, our range of machines did not include a horizontal twin-head grinder for smaller crankshafts. This gap is now filled with the PMD 2, a machine with an excellent price-performance ratio."
The basis for the PMD 2 is the Series 2 of EMAG NAXOS-UNION and EMAG KOPP. The PMD 2 is designed with two CBN grinding wheels to machine crankshafts to the highest precision. To achieve this, the machine is equipped with a direct-driven work spindle, hydrostatic guideways and a linear motor in the X-axis, as well as an in-process measuring control that allows for roundness monitoring and correction in the machine. "The operator enters the relevant command in the control and the measuring process is carried out once the bearing has been ground. The software, developed by EMAG, then calculates the relevant correction values from the remaining roundness errors. This allows for the subsequent manufacturing processes to be successively optimized," said Dr. Hegener.
The technology is engineered for simultaneous use of two grinding wheels. The twin-tool process opens up a number of possibilities for the user, depending, of course, on component and machining requirements. Two pin bearings or main and pin bearing are machined simultaneously, leading to a reduction in cycle times. For instance, a four-cylinder crankshaft is machined in less than two minutes. The grinding wheels can, if required, be arranged very close together, so that adjoining pin and main bearings can be machined simultaneously. Both, grinding spindles and work headstock are direct-driven. "This further increases precision and productivity levels," said Hegener.
The machine construction is compact but flexible. The enclosure includes, for instance, the electrical cabinet. Connecting up an automatic loading system is also no problem. And both emulsion and oil can be used as coolants. "We tailor the machine exactly to the customer's requirements. Integration of the machine into an existing, complex production line is an important option. But we can also see the machine being used as a stand-alone solution, with manual loading," said Dr. Hegener.
For more information contact:
Kirk Stewart
EMAG L.L.C.
38800 Grand River Ave.
Farmington Hills, MI 48335
248-966-4703
kstewart@emag.com
www.emag.com
Southwest
AR
David Fitzgerald
EMAG L.L.C.
Charlotte, NC
248-595-1117
dfitzgerald@emag.com
www.emag.com
NM
Kirk Stewart
EMAG L.L.C.
38800 Grand River Ave.
Farmington Hills, MI 48335
248-996-4703
kstewart@emag.com
www.emag.com
LA, OK, TX
Ric Lorilla
EMAG L.L.C.
Houston, TX
248-595-1530
rlorilla@emag.com
www.emag.com
Southeast
AL, FL, GA, MS, NC, SC, TN, VA
David Fitzgerald
EMAG L.L.C.
Charlotte, NC
248-595-1117
dfitzgerald@emag.com
www.emag.com
Northeast
NY, PA
James Petiprin
EMAG L.L.C.
38800 Grand River Ave.
Farmington Hills, MI 48335
248-910-8413
jpetiprin@emag.com
www.emag.com
CT, DE, MA, MD, ME, NH, NJ, RI, VT
Jonathan Chomicz
EMAG L.L.C.
Hartford, CT
248-497-8526
jchomicz@emag.com
www.emag.com
WV
David Fitzgerald
EMAG L.L.C.
Charlotte, NC
248-595-1117
dfitzgerald@emag.com
www.emag.com
Midwest
MI, OH
James Petiprin
EMAG L.L.C.
38800 Grand River Ave.
Farmington Hills, MI 48335
248-910-8413
jpetiprin@emag.com
www.emag.com
IL, IN, WI
Tod Petrik
EMAG L.L.C.
Chicago, IL
248-470-2646
tpetrik@emag.com
www.emag.com
IA, KS, MN, MO, NE, ND, SD
Bill Konetski
EMAG L.L.C.
Minneapolis, MN
612-804-0857
bkonetski@emag.com
www.emag.com
KY
David Fitzgerald
EMAG L.L.C.
Charlotte, NC
248-595-1117
dfitzgerald@emag.com
www.emag.com
West
AZ, CA, CO, ID, MT, NV, OR, UT, WA, WY
Kirk Stewart
EMAG L.L.C.
38800 Grand River Ave.
Farmington Hills, MI 48335
248-996-4703
kstewart@emag.com
www.emag.com