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1.发明公开Computer controlled universal grinder and method for grinding hypotrochoidal, epitrochoidal and circular bearing races 失效计算机控制的万能磨床和研磨低渗方法，和epitrochoidischen圆形滚道。
公开(公告)号：EP0336312A2
公开(公告)日：1989-10-11
申请号：EP89105689.7
申请日：1989-03-31
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： B24B19/06
摘要： A grinding machine for grinding epitrochoidal, hypotrochoidal, and circular bearing races in one set-up without having to move the part and to insure near perfect concentricity between all of the bearing races.
A machine blank is mounted on an upper rotary table that is in turn mounted on a lower rotary table. The upper table is driven both by the lower table and by an independent servomotor. The net speed of the upper table is the difference between the two driving speeds of the tables. The axis of rotation of the upper table is capable of being offset from the axis of rotation of the lower table. The two tables are rotated in opposite directions while a grinding wheel is moved laterally into contact with the surface of a rough-machined part to form the trochoidal surface. The characteristics are determined by the amount of the offset, the diameter of any rollers that are to be positioned between the trochoidal surfaces in the speed change device, and the relative speeds of the two tables. After the trochoidal surface or surfaces are completed, the lower table is stopped in its home position and the upper table is driven in order to grind the circular bearing race or races. Three independently-driven grinding spindles are provided.摘要翻译： 一种磨床，研磨外摆线，hypotrochoidal，并且在一个建立圆形轴承座圈，而不必移动部分和所有的轴承座圈之间保证近乎完美的同心度。 一种机器空白被安装在到上旋转台没被又安装在下部旋转台。 上表由下表两者，并通过在独立的伺服电机驱动。 上表的净速度的表的两个驱动速度之间的差值。 上工作台的旋转轴能够从下表中的旋转轴线偏移。 两个表都在相反的方向旋转，同时砂轮被移动尾盘反弹成具有粗糙加工的部分的表面接触，以形成次摆线表面。 特性是由确定性的偏移的任何辊的直径被做在变速装置中的余摆线表面，并且这两个表的相对速度之间被定位在量开采。 摆线表面或表面被完成之后，将下表被停止在其初始位置和上表，以便研磨圆形轴承座圈或座圈驱动。 提供了三种unabhängig驱动圆磨削主轴。
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公开(公告)号：EP0086393B1
公开(公告)日：1987-05-06
申请号：EP83100907.1
申请日：1983-02-01
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： F16H1/32 , Y10T74/19623
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公开(公告)号：EP0356990B1
公开(公告)日：1994-05-11
申请号：EP89115915.4
申请日：1989-08-29
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： F02F1/18 , F01B9/026 , F02B3/06 , F02B75/048 , F02B75/246 , F02B75/32
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公开(公告)号：EP0086393A3
公开(公告)日：1984-09-05
申请号：EP83100907
申请日：1983-02-01
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： F16H1/32 , Y10T74/19623
摘要： A method and apparatus for minimizing backlash and improving the efficiency of speed reduction mechanisms in which a series of rollers are equally spaced in a circle on a disk to perform operationally somewhat like an internal ring gear. Mounted for eccentric movement and simultaneously engaging each of the rollers is an orbital rotor having a perimeter defined by an epitrichoid curve with a numer of lobes equal to one less than the number of rollers. The rotor is mounted for free rotation on an eccentric keyed to a drive shaft. Rotation of the drive shaft causes the rotor to move orbitally and to rotate with a speed reduction equal to the reciprocal of the number of lobes on the rotor. A similar structure may serve as a second stage with a second orbital rotor driven by the first rotor and moved orbitally by the same eccentric. In carrying out the method of this invention, each of the rollers is individually adjusted to bring it into engagement with the rotor under controlled pressure and compliance. Each roller is mounted for controlled omnidirectional compliance and preloaded to provide an controlled pressure between each roller and the adjacent surface of the rotor. The outer surface of each roller is crowned to increase the efficiency and prevent binding that might be caused by angular deflection of the roller. Each roller is mounted on a shaft that is pressfitted into an eccentric bore in a mounting sleeve that is enlarged near the roller to provide for controlled deflection of the shaft as the sleeve is rotated in its mounting. Each roller is individually adjusted to produce a controlled preload pressure between the roller and the rotor.
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公开(公告)号：EP0087743A2
公开(公告)日：1983-09-07
申请号：EP83101739.7
申请日：1983-02-23
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
摘要： A speed reducer having an orbitally driven rotor, mounted for free rotation on a rotor drive wheel driven along a rotary path by a drive shaft, has a perimeter defined by an epitrochoidal curve that simultaneously engages each of a series of rollers arranged in a circle around the rotor, the number of lobes on the rotor being one less than the number of surrounding rollers. Rotation of the drive shaft causes the rotor to move orbitally and to rotate with a speed reduction equal to the reciprocal of the number of lobes.
The rotor drive wheel is driven by a compensation coupler that prevents radial forces of the rotor and the rotor drive wheel, such as may be generated as a result of inaccuracies in machining, temperature changes, etc., from being transmitted to the drive shaft where they could be translated into large forces. With the present arrangement, the drive shaft provides only a rotary thrust on the rotor drive wheel and is shielded from reaction movements of the rotor and rotor drive wheel.
The rotor drive wheel is driven along an orbital path by a variable-length crank arm that extends into a radial opening in the rotor drive wheel and makes sliding engagement with opposite faces of the radial opening. The driving surfaces that engage the faces of the radial opening form, in a plane perpendicular to the axis of the drive shaft, arcs of a circle equal in diameter to the width of the radial opening. The radial opening is long enough to permit the rotor drive wheel and the rotor to follow the requisite orbital path. The crank arm includes an expansion slot that divides it into two fingers that embrace opposite sides of the radial opening. For smaller units, the spring quality of the fingers is relied upon to maintain firm engagement between the fingers and the faces of the slot. In larger units, an adjustment screw permits changing the spacing between the fingers to precisely fit the width of the crank arm to the width of the radial opening. In either case, the only radial forces on the drive shaft are those generated by the torque of the drive shaft.-
公开(公告)号：EP0381034B1
公开(公告)日：1994-09-28
申请号：EP90101413.4
申请日：1990-01-24
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： F02B75/048 , F01B9/026 , F02B3/06 , F02B75/04 , F02B75/24 , F02B75/246 , F02B75/32 , F02F1/18 , Y10T74/1675 , Y10T74/2179 , Y10T74/2183
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7.发明公开Computer controlled universal grinder and method for grinding hypotrochoidal, epitrochoidal and circular bearing races 失效计算机控制通用磨床和研磨高速铁路，铁路和圆形轴承座的方法
公开(公告)号：EP0336312A3
公开(公告)日：1991-01-09
申请号：EP89105689.7
申请日：1989-03-31
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： B24B19/06
摘要： A grinding machine for grinding epitrochoidal, hypotrochoidal, and circular bearing races in one set-up without having to move the part and to insure near perfect concentricity between all of the bearing races. A machine blank is mounted on an upper rotary table that is in turn mounted on a lower rotary table. The upper table is driven both by the lower table and by an independent servomotor. The net speed of the upper table is the difference between the two driving speeds of the tables. The axis of rotation of the upper table is capable of being offset from the axis of rotation of the lower table. The two tables are rotated in opposite directions while a grinding wheel is moved laterally into contact with the surface of a rough-machined part to form the trochoidal surface. The characteristics are determined by the amount of the offset, the diameter of any rollers that are to be positioned between the trochoidal surfaces in the speed change device, and the relative speeds of the two tables. After the trochoidal surface or surfaces are completed, the lower table is stopped in its home position and the upper table is driven in order to grind the circular bearing race or races. Three independently-driven grinding spindles are provided.
摘要翻译： 一种用于在一个装置中研磨外旋，假脊柱和圆形轴承座圈的研磨机，而不必移动该部件，并确保所有轴承座之间接近完美的同心度。 机器坯件安装在上旋转台上，上旋转台又安装在下旋转台上。 上表由下表和独立的伺服电机驱动。 上表的净速度是表的两个行驶速度之间的差。 上表的旋转轴能够从下表的旋转轴偏移。 两个工作台沿相反的方向旋转，同时砂轮横向移动与粗加工零件的表面接触以形成摆线表面。 特性由偏移量决定，即位于变速装置中摆线表面之间的任何辊子的直径以及两个表的相对速度。 在摆线表面或表面完成之后，下台子停在其原始位置，并且上台被驱动以研磨圆形轴承座圈或座圈。 提供三个独立驱动的研磨主轴。
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公开(公告)号：EP0386429A2
公开(公告)日：1990-09-12
申请号：EP90101412.6
申请日：1990-01-24
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： H02K41/06 , H02K41/0352
摘要： A trochoidal speed reduction mechanism forms an integral part of the stator and rotor of an electric motor so that a slow-speed high-torque output is produced without having any high speed rotating component in the motor. A rotor has an epitrochoidal contour with a predetermined number of lobes. Positioned around the rotor are two non-rotating orbiting stator-rings, phased 180 degrees apart, each provided with a number of rollers equal to the number of lobes on the rotor plus one. The rollers are rotatably mounted on the inner surface of the stator-ring and are in continuous contact with the epitrochoidal contour of the shaft rotor. The non-rotating orbital movement of the stator-rings is produced by magnetic forces from a series of stator windings arranged as magnetic poles around the stator-rings. This action causes the rotor to rotate at a speed equal to the orbiting speed of the stator-rings divided by the built-in speed reduction ratio. Because the two stator-rings are orbiting 180 degrees apart, the orbiting masses and the torque on the rotor are balanced. The current flow through the stator winding, the sequential timing, the direction of rotation and the speed are all controlled by conventional solid state circuitry.
摘要翻译： 摆线减速机构形成电动机的定子和转子的组成部分，从而在马达中没有任何高速旋转部件的情况下产生低速高扭矩输出。 转子具有预定数目的叶片的外旋轮廓。 位于转子周围的是两个非旋转运动的定子环，其相位相差180度，每个定子环设置有等于转子上的叶数加上一个的多个辊。 辊可旋转地安装在定子环的内表面上并与轴转子的外旋轮廓连续接触。 定子环的非旋转轨道运动由定子环周围的一系列定子绕组的磁力产生。 该动作使转子以等于定子环的行进速度除以内置减速比的速度旋转。 由于两个定子环绕180度旋转，所以转子上的转动质量和转矩平衡。 通过定子绕组的电流，顺序时序，旋转方向和速度均由常规固态电路控制。
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公开(公告)号：EP0356990A3
公开(公告)日：1990-06-20
申请号：EP89115915.4
申请日：1989-08-29
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
CPC分类号： F02F1/18 , F01B9/026 , F02B3/06 , F02B75/048 , F02B75/246 , F02B75/32
摘要： The present disclosure relates to an improved variable positive fluid displacement apparatus, operating either as a pump or as a motor, that is self lubricated, has high volumetric capacity and operates with high efficiency over a wide range of speeds and pressures. The apparatus comprises a crankshaft (2), a crankcase surrounding said crankshaft, a displacement chamber and a slidable port plate having first and second spaced legs extending therefrom, first and second eccentric drive means positioned on said crankshaft, and means connecting said first and second legs respectively to said first and second drive means, whereby with the crankshaft rotating, the port plate slides to selectively close and open ports (31), and said piston is driven in a direction perpendicular to the plane of the sliding motion of said port plate.
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公开(公告)号：EP0087743B1
公开(公告)日：1987-05-06
申请号：EP83101739.7
申请日：1983-02-23
申请人： Pierrat, Michel A.
发明人： Pierrat, Michel A.
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