Machine frames

Dimensions and output series for rotating electrical machines. Frame number 56 to 400 and Range number 55 to 1080 1231/1991 BS 5000-10/1989 BS 4999-141/1987 ... 

Since card and ring frame motors are normally mounted inside the machine frame, there is an obvious obstruction in the cooling. With this in mind and to meet the torque requirements, the common practice is to choose the next... 

Figure 6.136 Flameproof compartments in the machine frame of a shearer-loader.

To withstand the evolving forces, the die has to be fixed tightly in the machine, and for that purpose it is accurately fit in a die table consisting of steel. The die table is further friction locked to the machine frame. 

For measurement strain gages are mostly used. These strain gages consist of constantan. They are applied in eccentric tableting machines at the upper or lower punch holder and in rotary tableting machines at the machine frame or the compression roll pin. Alternatively piezoelectric crystals can be used which have to be placed inside the punches [40],... 

The sensitivity of force measurement is dependent on the distance between the force transducer and where the force occurs. Thus for force measurement, instrumentation of the punches is more advantageous than instrumentation of the machine frame. However, since punch and die sets have to be exchanged between different runs of the machines, instrumentation of the punch holder, the machine frame, or the roller pin is most widely spread. 

Many applications for tungsten have been suggested because of its ability to resist corrosion of acid and alkaline liquors, such as gauze in centrifugal machines, frames and supports for filter... 

A guard of adequate strength must be securely attached to the machine frame. The aim is to enclose the wheel to the greatest possible extent and keep the opening as small as possible. 

A feed-off-arm bed is a cylindrical sewing machine frame that permits joining of two opposite edges of a flat-shaped fabric to create a hollow cylindrical-shaped item. The axis of the cylindrical bed is parallel to the direction of sewing... 

Figure 11.4). Here the operator wraps the part to be sewn around the machine bed, two opposite edges are joined together by flat and fell seam and it is fed away from the operator, off the end of the bed, as the operator sews (Carr and Latham, 1999). While one end of the cylinder-shaped arm is attached to the machine frame, the sewing happens at the other end, which is open and away from the operator. Here the sewn fabric travels away from the cyhnder bed thus the sewn cylindershaped item automatically comes off the tubular/cylindiical-shaped atm. Shirt sleeve inseams and trouser leg inseams are operations where the flat shape of fabric is converted to a hollow cylinder/conical shape, and a feed-off-arm is the appropriate bed type for these operations. 

A post bed is a sewing machine frame in which the bed is the top surface of a pillar or post. The pillar or post is mounted vertically on the machine table (Figure 11.5). The sewing area is the horizontal cross-sectional area of the pillar or post, which is typically less than or equal to four square inches. Such a bed type permits sewing of concave-and convex-shaped 3D items, such as brassiere or girdle parts, with ease because the sewn part can follow its geometric inclination to encompass this bed shape as it is sewed (Solinger, 1988). This bed type is used where the parts to be sewn are small, curved or otherwise awkward in shape (Carr and Latham, 1999). 

Even though backhoe models vary, all have a few standard safety features. These include steps and grab handles for getting on and off of the machine. Frame lock levers and attaching levers are present to keep the backhoe securely fastened to the loader frame during operation, as well as when it s being transported. 

Stainless steel machine frame and barrel cover... 

The trend in memory devices is toward larger, faster and better-performance products. There is a complementary trend toward the development of special purpose memory devices. Several types of special purpose RAMs are offered for particular applications such as content addressable memory for cache memory, line buffers (FIFOs) for office automation machines, frame buffers for TV and broadcast equipment, and graphics buffers for computers. 

Is grounding of the machine frame and safety ground connections of portable machines checked periodically ... 

Figure 2 Slime on machine frame of a paper machine.

Basic Principles. The fundamental concepts pertaining to isolation of items to be protected from vibrations may be visualized with the aid of the schematic sketch of Fig. 4.107. This shows a vibration-sensitive item attached to a base, which is fastened to a vibrating structure (e.g., a floor of a building housing vibration sources) via resilient elements, represented in the sketch by springs. In reality, the base may consist of a machine frame or foundation, an inertia block, or a floated (isolated) slab or floor. 

Rmin, the largest tensile strain is present at the outer surface. For a symmetrical sample the strain at this location is Smax = 1.198 h/L, where h is the sample thickness and L the distance between the neutral lines. The faces of the clamps isolate the sample electrically from the machine frame. In the test the resistance of the ITO layer is determined as a function of the distance Lq between the plates (Lo = L + h). The crosshead velocity of the universal testing machine (Instron 5566) during the test is 10 mm/min. The relative resistance increase AR/R is represented as a function of maximum tensile strain in figure 7. The curves, represented in this figure are measured on samples of the same width (15 mm). One sample has a uniform ITO layer over the full width. On the other samples a single ITO line of a defined width is etched. 

Figure 7.13 Tubular embroidery machine frame (a) in working position and (b) in turnaround position.

In-machine trimming, where the sheet containing the formed products is indexed to a trimming press located on the machine frame (Fig. 16.12). 

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