摘要:
The invention is a further development of the gear-head unit for a manipulator described in German Open Patent Application No. 34 28 748. In order to increase the radius of action and range of applicability of the gear-head unit a structural arrangement with three concentric drive axes and four allowed rotational motions of front, intermediate and rear segments of the manipulator is set forth. These front, intermediate and rear segments are pivotally mounted together about first and second inclined pivot axes which are inclined to each other and to the main drive shaft axis. Along these inclined pivot axes two hollow drive shafts connected with each other extend which are supported by reduction gears in the front and/or intermediate segments. Because of that simultaneous opposing rotational motions of the intermediate and rear segments can be obtained from a single drive motor. In the rear segment an output drive shaft attached to a front plate for a tool holder is rotatably mounted which is driven by coupled intermediate drive shafts guided through the hollow drive shafts.
摘要:
A pivot drive for interconnecting a pair of members that are relatively pivotal about a pivot axis has a torsion rod extending along a rod axis and rotatable by an appropriate drive relative to one of the members. This rod has outer ends carrying input gears of respective constant-mesh gear trains having output gears at least one of which is limitedly rotatable about the pivot axis on the other member. This one output gear can be limitedly rotated and locked in place in the other member so as torsionally to prestress the rod, thereby eliminating play from the drive by bringing the gears of one of the gear trains into snug contact in one direction and the gears of the other gear train into snug contact in the opposite directions.
摘要:
An improvement of a device for protecting manipulators against collision with other objects. Two discs are held in spaced relationship by spacer balls applied thereagainst on the periphery. The discs are urged toward each other and the gap is adjustable. If due to a collision, the position of the spacer balls is changed, the discs move toward each other, thereby causing actuation of a switch and a disconnection of the drive.
摘要:
Workpieces of unequal configuration are to be treated within an assembly line. For this purpose, suitable clamping frames are provided to hold the workpieces. These are moved about a common axis which extends laterally above an assembly line direction. While the upper edge of each individual clamping frame is hinged to an element which is rotatable about the axis, the lower edge is guided in a fixed guideway toward a working position. A common guideway length of two fixed guideways is movable into the working position transversely to the assembly line direction.
摘要:
A brake effective between a rotating part and a non-rotating part has a substantially nondeformable brake disk secured to one of the parts, centered on an axis, and having a pair of axially oppositely directed brake-disk faces. A housing is secured to the other of the parts, at least partially surrounds the brake disk, and has a pair of end walls having wall faces axially confronting the respective disk faces. Respective brake elements are limitedly axially displaceable between the wall faces and the respective disk faces and engageable with the respective disk faces. Formations on the elements and housing prevent the elements from rotating relative to the housing. Spring packs between the brake elements and the respective wall face urge the elements with a substantially constant force axially together into braking engagement with the disk. Seals between the brake elements and housing define a pressurizable chamber between the brake elements. The chamber can be pressurized to move the elements axially apart and out of braking engagement with the disk.
摘要:
A first succession of workpieces is displaced along a first conveyor path past a work station in steps and a second succession of workpieces is displaced past the work station in steps synchronously with the first succession along a second conveyor path crossing the first path at an intersection adjacent the work station. The workpieces of the first and second successions are alternately arrested adjacent the work station so that as a workpiece of one succession is arrested adjacent the station the workpieces of the other succession are moving and vice versa. A tool at the station works alternately on the arrested workpieces. Thus as a workpiece of one succession is being held stationary and worked on a workpiece of the other succession is being removed from adjacent the station and replaced with the following workpiece of the other succession. The workpieces are transported horizontally generally at the same level and the paths cross at the intersection generally at a right angle. Thus the tool is oscillated generally through a right angle between successive workpiece advance steps synchronously with workpiece advance. Four such tools can be provided to work on both sides of two stationary but succeeding workpieces of the same succession at the same time, then to work on both sides of two stationary but succeeding workpieces of the other succession while the first ones are transported away and replaced.
摘要:
A process for manufacturing a wheel for a motor vehicle, in which a wheel spider and a rim ring are connected with one another by means of friction welding. At least one of these wheel parts consists of a magnesium alloy. The controlling of the speed of the start of the friction, of the friction and of the compression of the friction welding process, particularly of the deformation capacity, takes place as a function of physical characteristics of the magnesium alloy.
摘要:
The present invention pertains to a process and a device for adjusting an axis, especially an axis of rotation, wherein an adjusting sensor (4) is provided on the axis (2). A position-measuring system (1) with internal cyclic absolute signaling is provided, by means of which the mechanical zero point marking on the axis is reached, and the cyclic absolute actual position value found there is read and entered into the axis control unit (16). Starting from this, the displacement to the desired adjusted position of the adjusting sensor is calculated in the axis control unit (16), and this position is reached with the axis (2) automatically or manually. At this adjustment position, which is located in the middle of a selectable transducer cycle of the position-measuring system, the adjustment of the adjusting sensor (4) is performed.
摘要:
The invention concerns a manipulator (1) which is able to automatically receive the tool holder (7), to clamp it and to set it down again, in order thus to make possible a rapid changing of different tools. For this purpose, the last drive element (6) of the manipulator (1) as well as the tool holder (7) are provided with coupling parts (8,9) and with cooperating screw systems (16,17). The manipulator-side screw system (17) is mounted via an operating element (11) for rotation at a second operating element (10) which forms a rotation barrier (13) with the tool holder (7) as the coupling parts (8,9) come together. The screwing process is actuated by rotation of the last drive member (6). The two operating elements (10,11) are furthermore non-rotationally connected through a fixing mechanism (20). This rotation lock is abolished as soon as the rotation barrier (13) between the operating part (10) and the tool holder (7) becomes effective. In this manner it is possible during the screwing process to connect connectors (24) present at the operating part (10) with connector counterpieces (25) provided at the tool holder (7) in order to automatically achieve a transfer of energy, cooling and/or pressure medium.
摘要:
The invention relates to the production of a guidance system (9, 14) for two machine parts (1, 2) which are movable relative to each other and are interconnected through this guidance system. To protect this guide track (9) disposed on the first machine part (1) from the track dust, grease, oil and the like, it is disposed in an almost completely closed guide channel. This guide channel is accessible only from the top through a slot engaged by guide elements (14) of the other machine part (2). The slot is covered on the one hand by the housing of machine part (2), and in the area outside of this housing it is closed by a belt (4). The guide track (9) is thus closed to the outside in any position of the machine part (2). If a toothed belt drive (3) is used, the toothed belt (4) acts as driving and covering element at the same time.