Components of a pocket-sprung-mattress sub-assembly having individual metal springs retained within a matrix of fabric pockets are separated. A rotatable tearing drum 405 is driven by a drive motor 406. Tearing devices 407 are arranged to pull metal springs from a pocket-sprung-mattress sub-assembly during the rotation of the tearing drum 405. A feeding assembly 408 compressors an end portion of the mattress sub-assembly and moves this end portion continually to bring an end of the mattress sub-assembly into contact with the rotating tearing devices 407.

A method for installing a wrap spring includes providing a first sleeve with a first longitudinal axis extending in an axial direction and a lateral surface, and the wrap spring designed to frictionally abut the lateral surface. The wrap spring includes a nominal diameter and a central axis. The method includes applying the wrap spring in a relaxed state to the lateral surface at an angle α between the central axis and the first longitudinal axis, elastically twisting the wrap spring to change the nominal diameter while the wrap spring contacts the lateral surface, reducing the angle α, threading the wrap spring onto the first sleeve, and relaxing the wrap spring to establish frictional contact with the lateral surface.

A spring compressor is disclosed. The spring compressor includes a frame, a lower shock assembly mount, a top hat mount, and a compressing component. The compressing component coupled with the frame, the lower shock assembly mount, and the top hat mount, the compressing component to provide a compression on a spring by reducing a distance between the lower shock assembly mount and the top hat mount.

A method for installing a wrap spring includes providing a first sleeve with a first longitudinal axis extending in an axial direction and a lateral surface, and the wrap spring designed to frictionally abut the lateral surface. The wrap spring includes a nominal diameter and a central axis. The method includes applying the wrap spring in a relaxed state to the lateral surface at an angle α between the central axis and the first longitudinal axis, elastically twisting the wrap spring to change the nominal diameter while the wrap spring contacts the lateral surface, reducing the angle α, threading the wrap spring onto the first sleeve, and relaxing the wrap spring to establish frictional contact with the lateral surface.

A biasing member compression fixture may have a first leg and a second leg. The legs may be substantially parallel one another and separated by a gap. The fixture may also have a base member connecting the first and second legs and extending across the gap. The biasing device may be connected to the base member and a ram may be connected to the biasing device. An upper member may connect the first and second legs and extend across the gap. A recess may be located in the upper member. A biasing member detecting unit may be connected to the upper member and may be adapted to detect a biasing member in the recess.

An objective of the present invention is to provide a device for mounting spring pieces on a machine housing that can enable high-accuracy press-fitting of the spring piece without any damages to magnetic shoes. The present invention comprises a base plate on which a housing positioning base and a first press are provided; a loading holder, having feeding carriages fixed on side faces thereof, is provided above the housing positioning base; a lifting block, which is provided with several first guide rods extending down onto a lower side thereof, is provided at an output end of the first press, and the loading holder is linked with and located below the lifting block; the loading holder is provided with first guide slots each having an upward opening to fit to the first guide rod as well as loading slots running vertically, and the lifting block is fixed to hold-down plates each extending downward so that a lower end of each hold-down plate extends into the loading slot; and the feeding carriage is provided with a receiving groove which is communicated with the loading slots and configured to receive the spring pieces is laminated from side to side.

A method for setting a screw, which has an external thread in a front region and a drive in a rear region for introducing a torque into the screw, in a drilled hole in a substrate of a mineral material includes producing an internal thread in the drilled hole by a threaded drill provided with a cutting thread and then introducing the screw into the drilled hole and in so doing the external thread of the screw is screwed into the internal thread, produced by the threaded drill, in the drilled hole. The external diameter of the cutting thread of the threaded drill is smaller than the external diameter of the external thread of the screw.

The present invention relates to an automatic spring fastener assembly machine, including a rack and a power control box, and the rack is provided with a circulating conveying device, and a rubber casing feeding device, a fastener feeding device and a spring loading device which are in turn arranged around the circulating conveying device. The rubber casing feeding device includes a rubber casing vibration tray disposed to the left front side of the circulating conveying device, and the rubber casing feeding vibration tray is connected with a rubber casing distributing block through the rubber casing conveying track. The upper side of the circulating conveying device is provided with a rubber casing transportation manipulator, and the right front side thereof is provided with a rubber casing clamping device located below the rubber casing transportation manipulator, and a fastener pushing in device fitting the circulating conveying device is disposed under the rubber casing clamping device. In the present invention, material feeding and conveying is done by the circulating conveying device, and fasteners are fitted into corresponding holes on the rubber casings from a higher position with the fastener pushing in device, which can be completed fast and efficiently, is easy to operate, realize quick assembly of spring fasteners and improve working efficiency.

A process for forming a single crystal superalloy wave spring is provided. In one embodiment, the process may include machining a wave spring from a single crystal superalloy slab after optimizing its orientation using diffraction techniques so that the wave spring will exhibit optimal spring properties.

An articulation joint manufacturing process comprises cutting an elongated tube to form a multiplicity of links wherein adjacent links are connected by a bridge. The method comprises forming a fracturable portion on each bridge and connecting a multiplicity of springs to adjacentts links to form a workpiece. The method further comprises applying a torsional force to the workpiece about its longitudinal axis to fracture each bridge to form an articulation joint comprising a series of links wherein adjacent links are connected by at least one spring. Certain steps are formed by a laser. In one method, the springs are positioned on a mandrel and the springs are welded to the workpiece. The fracturable portion on the bridges may be produced by forming an indentation which may be a score, a perforation, an elongated indentation or an oval shaped indentation.