公开(公告)号：US4934511A

公开(公告)日：1990-06-19

申请号：US380110

申请日：1989-07-14

申请人： David B. Wood, III ,  Charles Hart

发明人： David B. Wood, III ,  Charles Hart

IPC分类号： B23P19/00 ,  B65G25/02

CPC分类号： B65G25/02 ,  B65G2201/0232

摘要： A longitudinal conveying system for mechanically feeding one or more workpieces to a predetermined loading position, comprising a pair of spaced, parallel longitudinal workpiece supports, with each such supports including an upper support face and having a distal end and a proximal end. The predetermined loading position is located adjacent the proximal end of the workpiece supports, and a longitudinal conveying beam is moveably located intermediate the workpiece supports. The conveying beam has an upper surface for supporting one or more workpieces. Driving apparatus for moving the conveying beam in an upward direction, a forward conveying direction toward the proximal end, a downward direction, and a backward direction is provided for enabling the conveying beam to lift workpieces from the workpiece supports for movement toward the proximal end. The downward movement is substantially vertical, and the upper surface of the conveying beam is lowered below the upper workpiece support faces prior to the backward movement returning the conveying beam to a predetermined original position. A device for detecting when a workpiece on the upper surface of the conveying beam has reached the loading position is provided, and the conveying system includes a control device, for automatically varying the length of stroke of the forward movement of the upper surface so that the detected workpiece can be properly placed at the loading position by the downward movement of the conveying beam.

公开(公告)号：US4560289A

公开(公告)日：1985-12-24

申请号：US722753

申请日：1985-04-12

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： B23Q1/70 ,  B23Q11/00 ,  F16C27/04 ,  F16C27/00

CPC分类号： B23Q11/0032 ,  B23Q1/70 ,  F16C27/045

摘要： A rotatable spindle is carried in bearings located in one end of the bore in an adapter. The other end of the adapter is fixed in a machine base so as to cantilever the adapter. A damping chamber is formed along the adapter length between the machine base and the adapter, and a damping medium is provided in the damping chamber to control vibrations of the cantilever assembly. In one embodiment, a viscous damping medium is utilized to effectuate squeeze film damping. In an alternate embodiment, a visco-elastic damping medium is utilized in the damping chamber.

摘要翻译： 可旋转的主轴承载在位于适配器中的孔的一端的轴承中。 适配器的另一端固定在机座中，以便悬挂适配器。 沿着机器基座和适配器之间的适配器长度形成阻尼室，并且在阻尼室中设置阻尼介质以控制悬臂组件的振动。 在一个实施例中，使用粘性阻尼介质来实现挤压膜阻尼。 在替代实施例中，阻尼室中使用粘弹性阻尼介质。

公开(公告)号：US4554842A

公开(公告)日：1985-11-26

申请号：US487962

申请日：1983-04-25

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： B23Q5/56 ,  F16H55/18 ,  F16H57/00

CPC分类号： F16H55/18 ,  B23Q5/56 ,  Y10T74/19623 ,  Y10T74/19628 ,  Y10T74/19633 ,  Y10T74/19898

摘要： An anti-backlash mechanism for a machine drive is disclosed, wherein a shaft carries a rotary worm wheel having drive connections to the tangs of two back-to-back clutch units. The first clutch unit is connected to a rotatable shaft, concentric with the worm wheel, and having a first helical gear on its end. A second helical gear on the support shaft is torsionally and axially free to slip. The second gear is connected to the second clutch unit by a torque tube permitting relative axial movement to occur between the two. A first actuator biases the two gears apart, and a second actuator between the second helical gear and the clutch units provides clamping force to engage the mechanism. An output bull gear is in mesh with the pair of helical gears. To engage the mechanism, the second actuator is energized, impressing a snugging force on the discs of the clutch units, and driving the second helical gear in an axial direction toward the first helical gear. Continued movement in an axial direction causes the clearance to be taken up between the teeth of the helical gears and the tooth space of the bull gear and will cause the gears to roll with respect to one another, thus taking the shake out of the spline teeth and drive tang connections between the clutch units and the worm wheel. When the second helical gear "bottoms", pressure build-up in the second actuator will cause maximum clamping force to be realized by the clutch units thereby preloading all parts for maximum drive stiffness.

摘要翻译： 公开了一种用于机器驱动的防间隙机构，其中轴承有具有与两个背靠背离合器单元的脚部的驱动连接的旋转蜗轮。 第一离合器单元连接到与蜗轮同心的可旋转轴，并且在其端部上具有第一斜齿轮。 支撑轴上的第二个斜齿轮扭转和轴向自由滑动。 第二齿轮通过允许在两者之间发生相对轴向运动的扭矩管连接到第二离合器单元。 第一致动器偏离两个齿轮，并且在第二斜齿轮和离合器单元之间的第二致动器提供夹紧力以接合该机构。 输出大齿轮与一对斜齿轮啮合。 为了接合机构，第二致动器被通电，在离合器单元的盘上施加紧张力，并且沿着轴向方向驱动第二斜齿轮朝向第一斜齿轮。 在轴向上的继续运动导致间隙在螺旋齿轮的齿和大齿轮的齿间之间被吸收，并且将导致齿轮相对于彼此滚动，从而将振动从花键齿 并驱动离合器单元和蜗轮之间的脚连接。 当第二斜齿轮“底部”时，第二致动器中的压力积聚将导致由离合器单元实现最大夹紧力，从而预先加载所有部件以获得最大驱动刚度。

公开(公告)号：US4491044A

公开(公告)日：1985-01-01

申请号：US472000

申请日：1983-03-04

申请人： Robert G. Haas ,  John R. Hasz ,  David B. Wood, III

发明人： Robert G. Haas ,  John R. Hasz ,  David B. Wood, III

IPC分类号： B23B29/24 ,  B23B29/32 ,  B23Q11/00 ,  F16F15/023 ,  B23B29/28 ,  B23B29/30

CPC分类号： B23Q11/0032 ,  B23B29/242 ,  F16F15/0237 ,  Y10S82/904 ,  Y10T408/37 ,  Y10T408/76 ,  Y10T74/1476 ,  Y10T82/2587

摘要： A facial relief and seal creates a closed damping chamber between the spindle end face and adjacent tool support plate. A plurality of tools are located on the face plate near the outer periphery. In one embodiment, a viscous medium, such as oil, is provided in the damping chamber. In an alternate embodiment, a visco-elastic material, such as PVC, is provided in the damping chamber. Relative movement between the spindle end face and the tool support plate will cause vibration damping.

摘要翻译： 面部浮雕和密封件在主轴端面和相邻的工具支撑板之间形成封闭的阻尼室。 多个工具位于外板附近的面板上。 在一个实施例中，在阻尼室中设置粘性介质，例如油。 在替代实施例中，在阻尼室中提供粘性弹性材料，例如PVC。 主轴端面和工具支撑板之间的相对移动将产生振动阻尼。

公开(公告)号：US4348044A

公开(公告)日：1982-09-07

申请号：US195756

申请日：1980-10-10

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： B25J15/08 ,  B23B15/00 ,  B23Q7/04 ,  B25J15/02 ,  B65G47/90

CPC分类号： B65G47/90 ,  B23Q7/043 ,  B25J15/0226

摘要： An article gripping apparatus has a housing moved into proximity with a part to be gripped. A clamp finger is pivoted on the housing by an actuator biased by a first "stiff" spring reacting against the housing. In the clamped position, an interference wedge block is biased against the clamp finger by a second, "soft", spring reacting against the actuator to prevent the finger from opening under the influence of an external force. A piston portion of the actuator is contained in a cylinder portion of the wedge block. When pressurized fluid is ported to the cylinder cavity, the wedge block is first retracted from the clamp finger, overcoming the second, "soft", biasing spring. When the wedge block contacts a fixed shoulder in the housing, the actuator piston is then forced away from the shoulder, overcoming the first, "stiff", biasing spring, pivoting the finger to an "open" position. Release of the fluid pressure will sequentially re-bias the actuator and wedge block, pivoting the finger to a "closed" position and locking it.

摘要翻译： 物品夹持装置具有移动到要夹持的部分附近的壳体。 夹具通过由第一“刚性”弹簧偏压的致动器枢转在壳体上，该弹簧与壳体反作用。 在夹紧位置，干涉楔形块通过第二“柔性”弹簧抵靠夹紧器偏压抵靠致动器，以防止手指在外力的影响下打开。 致动器的活塞部分容纳在楔块的圆筒部分中。 当加压流体被移动到气缸腔时，楔形块首先从夹钳手指缩回，克服第二个“软”偏置弹簧。 当楔形块接触壳体中的固定肩部时，致动器活塞然后被迫离开肩部，克服第一“刚性”偏置弹簧，将手指枢转到“打开”位置。 释放流体压力将依次重新偏置致动器和楔块，将手指枢转到“关闭”位置并锁定。

公开(公告)号：US5739607A

公开(公告)日：1998-04-14

申请号：US707021

申请日：1996-09-11

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： F16C25/08 ,  F16C39/06 ,  H02K7/08 ,  H02K7/09

CPC分类号： H02K7/09 ,  F16C19/542 ,  F16C25/086 ,  F16C32/0402 ,  F16C32/048 ,  H02K7/083 ,  F16C39/06 ,  Y10T408/16 ,  Y10T409/309352 ,  Y10T409/309464 ,  Y10T409/30952

摘要： A machine tool spindle is supported at its spindle nose in a front, rolling element mechanical anti-friction thrust and radial support bearing means. The middle and rear end of the spindle is supported in a magnetic radial rear bearing and further supported at a generally mid-position of the spindle by magnetic radial mid bearing. The two magnetic radial bearings provide radial suspension of the spindle and permit the spindle to slide freely. A spindle flange is axially forced by a magnetic axial thrust bearing to vary the pre-load of the mechanical anti-friction thrust and radial support bearing.

摘要翻译： 机床主轴在其主轴头处支撑在前部，滚动元件机械抗摩擦推力和径向支撑轴承装置中。 主轴的中后端支撑在磁性径向后轴承中，并通过磁径向中间轴承进一步支撑在主轴的大致中间位置。 两个磁性径向轴承提供主轴的径向悬挂，并允许主轴自由滑动。 主轴法兰由磁轴向推力轴承轴向推动，以改变机械抗摩擦推力和径向支承轴承的预载荷。

公开(公告)号：US5261147A

公开(公告)日：1993-11-16

申请号：US32124

申请日：1993-03-17

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： B23Q7/14 ,  B23Q16/02 ,  B23Q5/26

CPC分类号： B23Q7/1431 ,  B23Q16/026 ,  Y10T29/5124 ,  Y10T29/5196 ,  Y10T74/1418 ,  Y10T74/1476

摘要： An indexing system for the rotary work changer of a machining center for supporting and interchanging work-holder pallets between the machining zone and the load/unload zone of the machining center. The indexing system comprises a hydraulically powered rotary actuator attached to the work changer and having first and second ports, a hydraulic fluid pressure line and a hydraulic fluid return line, a directional valve for connecting the hydraulic fluid pressure line to either one of the first and second ports of the actuator depending on the desired direction of rotation of the work changer, and for connecting the other of the actuator first and second ports to the hydraulic fluid return line, a control valve connected between the actuator first and second ports and the directional valve to regulate the flow of return fluid from the actuator so as to cause the work changer to accelerate, reach a maximum speed and then decelerate to a slow speed just before reaching the desired one of its first and second positions.

摘要翻译： 一种用于在加工区域和加工中心的加载/卸载区之间支撑和交换工件托盘的加工中心的旋转工作转换器的分度系统。 分度系统包括一个液压动力旋转致动器，其连接到工作变换器上并具有第一和第二端口，液压流体压力线和液压流体回流管线，用于将液压流体压力管线连接到第一和第二端口 致动器的第二端口根据所需的工作转换器的旋转方向，并且用于将致动器第一和第二端口中的另一个连接到液压流体返回管线，连接在致动器第一和第二端口之间的控制阀和定向 阀，以调节来自致动器的返回流体的流动，从而使换档器加速，达到最大速度，然后在达到其第一和第二位置期望的一个之前减速到慢速。

公开(公告)号：US5005452A

公开(公告)日：1991-04-09

申请号：US391929

申请日：1989-08-10

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： B23B3/32 ,  B23Q15/16 ,  G05B19/404

CPC分类号： G05B19/404 ,  B23Q15/16 ,  B23Q2039/002 ,  G05B2219/41047 ,  G05B2219/45124 ,  G05B2219/49165 ,  G05B2219/49284 ,  G05B2219/49292 ,  Y10T82/2531 ,  Y10T82/2533 ,  Y10T82/2541 ,  Y10T82/2543 ,  Y10T82/2549

摘要： There is provided a high-production machining device having first and second spindles rotatably mounted on a headstock. A carriage is slidably mounted on the machine bed, and in a preferred embodiment a first drive assembly is provided for sliding the carriage across the upper face of the bed along a transverse axis thereof. First and second slides are slidably mounted on the carriage for movement in a direction normal to the transverse axis, with the first and second slides each adapted to carry a machine tool and each being attached to a common second drive assembly for moving the slides in that normal direction. A linear sensor monitors the positions of the first and second slides relative one another, and an independent compensating assembly is provided for adjusting the position of one of the slides relative the other in the normal direction, whereby positions of the first and second slides in the normal direction can be effectively independently controlled. In a preferred embodiment, the machining device further includes an independent adjustment device for moving one of the spindles relative the other in a direction parallel to the transverse axis, whereby the positions of the first and second slides in the transverse direction can be effectively independently controlled.

公开(公告)号：US4248104A

公开(公告)日：1981-02-03

申请号：US820927

申请日：1977-08-01

申请人： David B. Wood, III

发明人： David B. Wood, III

IPC分类号： F16H25/14 ,  F16K31/163 ,  F16K31/524 ,  F16H53/06

CPC分类号： F16K31/524 ,  F16K31/1635 ,  Y10T74/2107

摘要： The profile of the cam, of a cam-actuated, spring-return mechanism of the type which includes a cam-shaft, a cam-follower, a cam-follower-shaft and spring means having a given spring rate and initial preload, is shaped in such a manner, that for a particular spring means, the torque output of the cam-shaft can be tailored to meet the torque requirements of a driven device, for the torque output can be constant throughout the return travel of the cam-induced displacement of the spring means to a compressed condition beyond its initial preload, whereby an infinite number of torque output characteristics may be obtained by altering or preselecting the cam profile only, while utilizing, unchanged, the other components of the mechanism.

摘要翻译： 具有凸轮轴，凸轮从动件，凸轮从动轴和具有给定弹簧刚度和初始预载荷的弹簧装置的类型的凸轮驱动的弹簧复位机构的凸轮轮廓是 以这种方式形状，对于特定的弹簧装置，可以调整凸轮轴的扭矩输出以满足从动装置的扭矩要求，因为扭矩输出可以在凸轮引起的整个返回行程中是恒定的 弹簧装置的位移超过其初始预载荷的压缩状态，由此通过仅改变或预选凸轮轮廓，同时利用未改变的机构的其它部件，可以获得无限数量的扭矩输出特性。