Grinding Machines handle thin, pressure-sensitive parts.
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Press Release Summary:
Employing thin CBN or diamond abrasive wheel, Quickpoint Series 1000, 3000, and 5000 offer range of wheelhead configurations and varying numbers of flip over/tilting spindles. Tilting axis of wheel to horizontal workpiece axis creates relief angle that reduces contact line to point. Series can machine entire right and left shoulders, tapers, chamfers, radii, plunges, and relief grooves on both ends of workpiece, in one setup, with cutting speeds to 28,000 fpm.
Original Press Release:
Patented Quickpoint Technology from Erwin Junker Machinery at IMTS 2004
(Chicago, IL - September 8 - 15, 2004) The Quickpoint process creates a new dimension in efficiency and greatly exceeds the productivity and flexibility of all other grinding methods, especially in the field of automotive components, namely gear shafts or camshafts. These parts, many of which include plunge, eccentric, and thread grinding operations, can be completely machined in one clamping, which greatly improves part accuracies and productivity. Company representatives are available at IMTS 2004, booth B-6733, to discuss this new technology.
Quickpoint is sometimes described as a "point" grinding process or a "peel" grinding process. The pin-point contact of the wheel and the workpiece provides compelling advantages over conventional grinding. A Quickpoint machine employs a long life, CBN or diamond abrasive wheel that is just a couple of millimeters wide. Tilting the axis of the abrasive wheel to the horizontal workpiece axis, key to the process, creates a relief angle that reduces the contact line to a point. This results in significant grinding force reduction and is therefore suitable for grinding thin, heat and pressure-sensitive parts.
With Quickpoint, it is possible to machine entire right and left shoulders, tapers, chamfers, radii, plunges, relief grooves, fastening threads, surfaces and polygonal surfaces, on both ends of the workpiece, all in one setup. Driver dogs are not required. Cutting speeds up to 28,000 surface feet per minute (140 meters per second) can be achieved. Accordingly, Quickpoint is suitable for grinding high speed materials including ceramics and titanium.
Junker has developed three modular machine series employing the Quickpoint process, with a range of wheelhead configurations and varying numbers of flip over/ tilting spindles. The specific version chosen for a customer depends on the complexity of the application. The Quickpoint 1000 series offers a center height of 4 in. (100 mm) and a grinding length of 6 in. (150mm) and accommodates parts weighing up to 11 lbs. (5 kg). The 3000 series has a center height of 6 in. (150 mm), grinding lengths up to 20 in. (500 mm), for workpieces weighing up to 33 lbs. (15 kg). The Quickpoint 5000 series provides a center height of 7 in. (170 mm), length of 48 in. (1200 mm), and can handle parts weighing up to 287 lbs. (130 kg).
Users of all three series profit from the largely identical designs of the machines. All programming goes through the Erwin Junker Operator Panel (EJ-OP) platform. Its advantages include the graphic interface, interactive programming and operation processes, short training time, and fast changeover and setup from job to job. Once machinists have been trained on one Quickpoint, they are able to operate any from the three series.
For more information, visit IMTS 2004 booth B-6733 or contact Erwin Junker Machinery, Inc. in Dayton, Ohio, (937) 433-0774, www.junker-usa.com.
