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Cartridges, Cartridge Holders, and Their Care
Published in Maik W. Jornitz, Theodore H. Meltzer, Sterile Filtration, 2020
Maik W. Jornitz, Theodore H. Meltzer
Most sanitary housings use a clamp-type closure to secure the housing bowl to the head. Most clamps incorporate a wing nut or handle that can be hand tightened or loosened. This facilitates easy assembly of the housing without tools. However, in certain hazardous applications, a clamp that requires tools to remove it can provide an added level of safety. No matter what type of clamp is used, care must always be taken to align the bowl with the head properly prior to installation of the clamp.
Prototype optimization
Published in Fuewen Frank Liou, Rapid Prototyping and Engineering Applications, 2019
A modular fixturing system mainly consists of locators and clamps. The function of locators is to properly locate a work part to provide repeatable manufacturing operations. A work party, with the same geometry and placed in the same orientation, will be uniquely positioned when it remains in contact with all the locators. The clamps are used to secure the work part from being deviated away from the manufacturing position by applying external forces on the work part. For simplicity, in this example, each locator and clamp is treated as a point force normal to the contact surface of the work part. Friction between the work part and the locators and clamps is not considered in this example.
Toolholders and Workholders
Published in David A. Stephenson, John S. Agapiou, Metal Cutting Theory and Practice, 2018
David A. Stephenson, John S. Agapiou
The SINO-T system [66,70] is a universal toolholder design more slender than the standard Weldon and collet chuck holders. Its concept is similar to the hydraulic toolholder because it consists of an expansion sleeve and an expansion chamber with elastic medium (made from a solid body for stiffness). It clamps mechanically by tightening a clamping sleeve axially, which squeezes the elastic medium that transfers a clamping force uniformly over the clamped tool shank. Torques up to 95 and 290 N m can be transferred to tool shanks with quality H6, respectively, for 12 and 20 mm chucks. Its runout accuracy at the clamping bore is 0.005 mm. Its advantage over standard Weldon and collet chucks results from the vibration damping characteristics of the elastic medium; it provides good stiffness for end milling. In addition, the front cup is tightened to a dead stop and cannot be overtightened, as the nuts in collet chucks can be. The axial drawback of the tool shank is a few microns as the chuck is tightened.
Complibot: A compliant external pipe climbing robot
Published in Mechanics Based Design of Structures and Machines, 2023
Saurav Kumar Dutta, B. Sandeep Reddy, Santosha Kumar Dwivedy
Figure 5 shows the experimental setup for determining Fs. In the experimental setup, the horizontal scale is used for measuring Da and the vertical scale is for measuring Dv. There are four clamping plates, two on each end of the beam. The clamping plates clamp the beam with the help of nuts and bolts and make sure that the beam has a fixed-fixed end condition. There are three adjustable C clamps. The C clamp at the left end is totally fixed. It clamps tightly the clamping plates and the horizontal scale passing under the clamping plates. The C clamp at the extreme right holds tightly the horizontal scale in position. This clamp is also totally fixed. The red colored C clamp holds the clamping plates at the right end of the beam. The beam is initially straight and unstressed. The red colored C clamp is loosened and the unstressed beam or column is given an axial deflection of known values from the right end and then it is clamped tightly with the red colored C clamp. As the beam is very thin, it buckles almost instantly when loaded axially. For a beam of particular length, width and thickness, Dv corresponding to a given Da is recorded.
Feasibility study of employing mechanically induced long-period fibre grating as optical-based sensors
Published in Journal of Modern Optics, 2021
Titinai Chinggungval, Ravivudh Khun-in, Yuttapong Jiraraksopakun, Apichai Bhatranand
The diagram of the first phase experiment is depicted in Figure 7. An Ocean Optics broadband light source model HL-2000-LL was used to emit light with wavelength between 400 and 2000 nm into a SMF-28 optical fibre. A single-mode optical fibre was placed on a grating platform whereas a load cell was installed underneath to detect the applied forces onto a fibre. Three different periods of the groove plate: 700, 800, and 900 µm, were used to create a LPFG structure on the fibre. The standard C-clamp was altered to provide equal tension to the groove plate. It was connected to the sensor platform, as illustrated in Figure 8. A Yokokawa optical spectrum analyzer (OSA) model AQ6370 was connected to another end of the fibre to monitor the resonant wavelengths from the mechanically induced grating.
A New Era of Nuclear Criticality Experiments: The First 10 Years of Godiva IV Operations at NCERC
Published in Nuclear Science and Engineering, 2021
Joetta Goda, Caiser Bravo, Theresa Cutler, Travis Grove, David Hayes, Jesson Hutchinson, George McKenzie, Alexander McSpaden, William Myers, Rene Sanchez, Jessie Walker
The core was assembled by threading the two inner subassembly plates onto a steel mandrel, with Ring 5 captured between them. Ring 6 was then placed on top as shown in Fig. 9, followed by a steel loading ring. This upper fuel assembly was placed to one side of the table. On the other side of the table, Rings 1 through 4 were sequentially stacked on the base of the hydraulic press fixture. Two aluminum alignment rods mimic the control rods to ensure proper core alignment as shown in Fig. 9. The upper fuel assembly was then raised by crane and placed onto the rings. The stack was compressed at one edge by the hydraulic cylinder, and the first C-clamp was placed. The pressure was released, the stack rotated, and the process repeated at two more positions. The core was removed from the press by crane and suspended over an open area of the table as shown in Fig. 9. The support legs were attached to the C-clamps, followed by the Saturn Ring. Once the core was assembled, it was lifted by crane and carefully lowered over the control rods protruding from the stand as shown in Fig. 9. The three support legs were bolted to the stand from below.