公开(公告)号：EP2501521A1

公开(公告)日：2012-09-26

申请号：EP10776614.9

申请日：2010-10-21

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B57/00 ,  B28D5/00

CPC分类号： B24B57/00 ,  B01D29/09 ,  B01D29/824 ,  B01D29/843

摘要： The invention relates to a plant for separating grinding slurry originating from grinding machines into metal chips and grinding oil. According to the invention, a carrier bowl (3) in a frame (1) is filled with a divided volume of the grinding slurry (10). The carrier bowl (3) has a perforated plate (4) having an edge (5) as a floor and a sieve-like intermediate floor (8). By means of a lifting device (2), the carrier bowl (3) is moved to the effective region of an inductor plate (9) serving as a heater. The induction heat heats the ferromagnetic steel or iron particles present in the grinding slurry (10). Said heating effects a reduction in viscosity of the grinding oil in the grinding slurry (10), from which substantial portions flow downward through the openings (6) or (7). In certain cases, the effect can be improved by placing a steel plate on the free surface (16) of the grinding slurry layer (10).

公开(公告)号：EP1521663B1

公开(公告)日：2006-10-25

申请号：EP03763887.1

申请日：2003-07-17

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B5/04 ,  B24B41/06

CPC分类号： B24B5/04 ,  B24B41/007 ,  B24B41/065

摘要： The invention relates to a device for grinding rollers (6), also for grinding hollow rollers. As the rollers tend to vibrate transversally as a result of the contact with the grinding disc (13), a cushioned body (15) is applied to the opposite side of the roller from the grinding disc (13), said body being engaged pneumatically against the roller (6) and adapting at least partially to the contours of the roller. The cushioned body consists of an elastic solid material or an elastic external skin that is filled with an elastic pressurised medium. The engagement pressure of the cushion is adjustable. This is achieved by a pneumatic advance cylinder (17) located on a base (16), said cylinder having a piston that can be impinged on both sides (18) and that bears on its piston rod (19) a fixing plate (20) comprising the elastic cushion (15). The advance cylinder (17) is connected to compressed air conduits (21, 22), P indicating the conduit comprising a pressure regulator and L indicating the return conduit in the standard case. The invention thus provides a device (14) for damping vibrations, which suppresses any regenerative chatter and guarantees a grinding pattern that is devoid of chatter marks.

公开(公告)号：EP1597020B1

公开(公告)日：2006-06-14

申请号：EP04713525.6

申请日：2004-02-23

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B5/02 ,  B24B41/06

CPC分类号： B24B41/06 ,  B24B5/02

摘要： The invention relates to a grinding method and to a cylindrical grinding machine, in which a sintered hard metal round rod (6) is completely pushed through a chuck (4) of a workpiece spindle head, said chuck having chuck jaws (5). Two backrest seats (35, 36) are ground on the freely projecting end area (23) of the round rod (6), and two backrests (11, 12) are then placed on the round rod (6) in directions (13, 14). The resulting secure support of the end area (23) enables a front cone (37) to be ground with a high level of precision with regard to the concentricity at the end of the round rod (6) facing the quill (8) of a tailstock. A multiple grinding wheel (21), which is comprised of two differently designed individual wheels (31, 32) that directly rest against one another in an axial manner, serves to grind the front cone (37) and is advanced toward the round rod (6) in the X-direction. The multiple grinding wheel (21) is mounted in a grinding spindle (18). The individual wheels (31, 32) have different grinding areas (33, 34). After the front cone (37) has been ground, it is lodged in a hollow punch (10) at the front end of the quill (8), whereby the quill is displaced toward the front cone (37) in the direction of arrow (9). The end area (23) of the round rod (6) is hereby optimally fixed at both ends without the first fixing of the chuck (4) having to be released. In this state, the desired cylindrical grinding final contour of the end area (23) can be produced by cylindrical grinding. This procedure is particularly advantageous for producing hard metal tools. By working the rod with a single chucking, machining can be carried out both economically and without the risk of radial deviations. The different individual wheels (31, 32) of the multiple grinding wheel (21) can serve additional different grinding tasks. When the end area (23) has reached the desired concentric final contour, it is cut off from the round rod (6) by the individual wheel (32).

公开(公告)号：EP1427568A1

公开(公告)日：2004-06-16

申请号：EP02777056.9

申请日：2002-09-10

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B5/42 ,  B24B41/06

CPC分类号： B24B41/065 ,  B24B5/421

摘要： The invention relates to a device for the grinding of central bearing positions on crankshafts with several grinding discs employed simultaneously. An additional machining unit (11) for the pre-working of at least one central bearing position (2) on the crankshaft (1) is provided to form a bearing seat for the collar (3). The invention further relates to a method of grinding central bearing positions (2) on crankshafts (1), in which a bearing seat for a collar (3) is pre-worked before the process of the final precision grinding.

公开(公告)号：EP1039984B1

公开(公告)日：2003-03-05

申请号：EP98948966.1

申请日：1998-09-11

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B5/00 ,  B24B35/00 ,  B24B33/00 ,  B24B27/00

CPC分类号： B24B33/00 ,  B24B5/01 ,  B24B27/0076 ,  B24B35/00

摘要： The invention relates to a device and method for polishing a workpieces, especially part of a shaft. According to the inventive method, the workpiece is clamped in order to be polished by means of grinding. Its geometry is subsequently rectified according to its dimensions and shape. At least one part of the surface of the workpiece is at least partially superfinished, concurrent with said polishing. The inventive device comprises a workpiece spindle head and a footstock for clamping said workpiece in addition to a grinding unit with a grinding wheel for polishing said workpiece. The grinding unit and the workpiece are moveably mounted and controlled in relation to each other. The inventive device has a microfinishing unit, which can be moved according to the shape of the workpiece so that at least one part of the surface of the workpiece can be microfinished.

公开(公告)号：EP1098735B1

公开(公告)日：2002-09-11

申请号：EP99922096.5

申请日：1999-04-14

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin ,  LINDNER, Jürgen

IPC分类号： B24B47/12 ,  B23Q5/10 ,  B24B41/04 ,  B24B19/12

CPC分类号： B24B19/12 ,  B23Q5/10 ,  B24B41/04 ,  B24B47/12

摘要： The invention concerns a drive for a grinding disc of a cam grinding machine, wherein an electrical motor with a drive wheel (3) is provided, said drive wheel (3) being fitted with evenly spaced annular recesses (30) and the annular recesses (30) being fitted with permanent magnets (22) on the radial surfaces. A grinding spindle rotor (4) with evenly spaced annular recesses (29) is provided, the radial surfaces of the annular recesses (29) being fitted with permanent magnets (23), wherein the annular recesses (30) that are fitted with permanent magnets (22) of the drive wheel (3) and the rotor (4) engage with each other.

公开(公告)号：EP1137515A1

公开(公告)日：2001-10-04

申请号：EP99966936.9

申请日：1999-12-09

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B49/04 ,  B24B5/04 ,  B24B5/14

CPC分类号： B24B5/04 ,  B24B49/04 ,  G05B2219/50062

摘要： The invention relates to a method for controlling the process during rough grinding of a workpiece (2) in which, according to the invention, the workpiece (2) is measured during grinding by a sensor (13) to ascertain an actual size, and the measured actual size is corrected in a continuously automatic manner to attain a predetermined specified size according to grinding time. The invention also relates to a grinding machine which is provided for carrying out the method and which comprises a grinding wheel (10) for rough grinding a workpiece (2) on a grinding spindle head. The grinding machine also has a sensor (13) for detecting a ground workpiece dimension, and comprises a machine control, whereby the workpiece (2) is held between a workpiece spindle (1A) and a tail spindle (4A). According to the invention, the sensor (13) is arranged primarily in a plane formed by the contact area of the grinding wheel (10) which turns on the workpiece (2), and during rough grinding, said sensor continuously transmits measurement signals to the machine control. Said machine control controls the grinding wheel (10) based on these signals in such a way that the grinding process can be executed as an in-process control.

公开(公告)号：EP1105251A1

公开(公告)日：2001-06-13

申请号：EP99939458.8

申请日：1999-08-09

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B5/00 ,  B24B27/00 ,  B24B41/04 ,  B23Q39/00 ,  B23B3/16

CPC分类号： B23Q39/024 ,  B23B3/167 ,  B23Q2039/008 ,  B24B5/01 ,  B24B27/0061 ,  B24B27/0076 ,  B24B41/04

摘要： The invention relates to a grinding machine comprising at least one bed, feed slides and a grinding table with superstructures, which further presents a turning-tool holding fixture (6) for hard machining. The invention also relates to a method for machining a workpiece (1) in a grinding machine, according to which the workpiece (1) is hard-machined by turning in said grinding machine.

公开(公告)号：EP3285963B1

公开(公告)日：2018-08-29

申请号：EP17708519.8

申请日：2017-03-03

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B27/00 ,  B24B41/06 ,  B24B5/04

CPC分类号： B24B19/009 ,  B23F1/02 ,  B23Q3/155 ,  B24B5/04 ,  B24B19/022 ,  B24B27/0076 ,  B24B41/062 ,  B24B41/065 ,  B24B53/053 ,  F04C2230/10 ,  F04C2240/20

公开(公告)号：EP3079858A1

公开(公告)日：2016-10-19

申请号：EP14787119.8

申请日：2014-10-09

申请人： Erwin Junker Maschinenfabrik GmbH

发明人： JUNKER, Erwin

IPC分类号： B24B41/06 ,  B23Q1/76 ,  B24B5/42

CPC分类号： B24B5/421 ,  B23Q17/20 ,  B24B41/065 ,  B24B49/04

摘要： The invention relates to a steady rest for supporting central workpiece regions (9), in particular bearing points on shaft parts (6) of, in particular, crankshafts, during the grinding of central and/or eccentric workpiece regions. For the grinding, the steady rest (7) is brought from a retracted position to a supporting position against the workpiece region to be supported, wherein the steady rest (2) has supporting parts that can be advanced onto the workpiece region, which supporting parts support the workpiece region at respective circumferential regions spaced apart from each other. The workpiece to be supported is supported at the workpiece region thereof in the supporting position. According to the invention, the supporting parts are each arranged on a lateral flank of a prism opening in a fork-like manner on a steady-rest arm in a fixed position in relation to each other and to the steady-rest art, the supporting parts thus forming an opening angle to each other. At the same time, the supporting parts are arranged in such a way that the supporting parts are arranged below center with respect to the longitudinal axis of the workpiece region in such a way that an angle bisector formed between the two supporting parts has a fixed acute angle to the vertical extending through the longitudinal axis of the workpiece region and the CNC-controlled advancement occurs along said angle bisector. In a further aspect of the invention, the invention relates to a grinding machine, which has a steady rest described above, a control device, and preferably a measuring device, by means of which control device and measuring device the steady rest can be advanced onto the workpiece region and a grinding disk can be advanced to the final dimensional of the bearing point during the grinding of the bearing point by means of the grinding disk.

摘要翻译： 固定支架用于支撑，E. G.，在曲轴的轴部支承点，中央和/或偏心的工件区域的研磨过程中。 对于研磨，刀架从缩回位置转换到相对于工件区域的支撑位置以支撑工件区域在respectivement圆周区域。 在支撑部件上的棱镜开口在叉状方式在中心架臂在固定位置相对于彼此和刀架臂的横向侧面分别设置，所述支撑部，从而形成在开口 角海誓山盟。 支撑部分被布置在下面中心相对于所述工件区域搜索的纵向轴线做到两个支撑部件之间的角平分线具有固定的锐角到垂直通过工件区域的纵向轴线和所述CNC控制前进扩展 沿所述角平分线的发生。 本发明涉及研磨机，具有上述固定支架。