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## This article will discuss the different software and hardware used for automated insertion of screws into a wide variety of fasteners, whether they are structural steel members or production-line components.The most common machines used for this task are the hard lock driver system and the hard grip screwdriver system. The main advantages to these systems is their ability to work with low torque at high speed. Even though both systems can be used with one hand, many machines now offer two-handed operation using a sequence mode that feed screws through each hole in turn with either an index finger or surgical stainless steel wire. This article will discuss the software and hardware used in hard lock driver systems, which include:A brief description of each of these is given in the following sections. When using a hardlock system it is important to select and use suitable software and hardware in order to get the best results. The following topics will be discussed:The tools used in this kind of screwdriving system use a pneumatic ram with an opening on one side that is used to push a hollow cylindrical drill bit fitted with a slot for accepting the closed end of a screw. A special chuck holds the entire tool very accurately. They are fast, simple to use and provide high speed of screw insertion. However, the typical cost is higher compared to other types of systems. A hardlock system is an automated screwdriver that is capable of feeding up to 300 screws per minute (0.3–1 inch #6 screws). It drives screws into materials like wood, plastic, aluminum and steel with a pneumatic power ram that rotates inside a motor-driven drill bit. The typical cost is higher than other screwdriver systems which are slower or require manual operation for some applications. This type of system has the following advantages over traditional methods:Several different features can be added to these systems to achieve even greater precision and better lifetime performance. The addition of a robotic vacuum tool changer or automatic screw feeder, can improve the efficiency of these systems even further. The following will discuss the different components found in this system.A pneumatic ram is used to drive screws into materials. The most common material used for these rams is polyurethane, which is heat resistant and does not corrode easily, although some manufacturers are using other materials like aluminum alloy. The length of the ram determines the reach capacity of each machine, with 5" reaching about 3 feet and 7" rams reaching 14". A star wheel near the front of the machine rotates to move the driver bit outwards, increasing its reach length without extending the entire ram. An automated feeder is a pneumatic device which controls the positioning of a set of screws on a conveyor belt. This type of system is used in applications where the time required to insert the screws into the material is critical. If these systems are not used correctly, it can cause damage to the screw feeder or the material if it jams. The following types of feeders are available:A universal collet can be used with hardlock systems in order to accept various fastener sizes and types that are normally not threaded into chain or chainless tools (for example, M6 × 30 coarse thread bolts). eccc085e13
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