The main time (tg – main machine time or main manual time) is a component of the standard of technological times. Its definition is one of the key components of the production process schedule. The more efficiently determine the main time, the more accurate estimates of production costs. Scheduling is the basis of any process,…
During the design classes I noticed that the analysis of the construction drawing in terms of technology is a challenge. I consider this skill to be the key from the point of view of the technological preparation of production. The constructional drawing enables identification of functional and free surfaces. Contemporary design principles, including roughness are…
Hadfield steel is also known as prison steel, which results from one of its applications. Hadfield steel (Table 1) is widely known for its high abrasion resistance and hardenability while maintaining good plastic properties. High manganese steel (manganese), is used in the production of parts for machinery and equipment which requires very high resistance to…
Laser texturing is a laser beam forming technique for imparting specific properties to the surface layer of an workpiece. In the machine industry, laser technology is more associated with cutting, bonding and marking than with precise surface shaping. Illustrations 1 and 2 show examples of the use of laser texturing. As shown in Figure 2,…
Machining parameters, including turning parameters (fig. 1), are a challenge for every technologist. The technological cutting parameters in the turning process include: cutting speed vc [m/min] (1) – D – diameter of the workpiece; n – rotational speed of the workpiece (main drive) (1) main drive speed n [obr/min]; independent minute machining feed rate f [mm/min]…
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The blank (workpiece) in the form of a cast is economically justified in the case of series production (from 5,000 pieces). This article presents the basics of casting design in the context of further technological operations using mainly machining. The design of gray cast iron castings in sand molded by machine or by hand is…
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The standard of technological times (norm time) – determined at the end of the traditionally developed technological process. The general definition defines the standard of machining time as the amount of time necessary to carry out specific activities in given organizational and technical conditions, by a defined number of employees. Providing for [4] the norm of…
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Class parts bush and disk (sleeve and disk) are characterized by the fact that the most common are external and internal cylindrical surfaces. Quotient value (hole length to its diameter): means that the part is a sleeve (bush). If: means that the part is a disk type. In the case of…
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Technological process of sleeve – a series of entries under the technological preparation of the production process of the part of the sleeve class (including sleeve – general process – forging, Sleeve – technological process, introduction) has been continued. This entry is the first part of the example technological process of the sleeve. The selected…
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During his studies, then working at F.W.P. VIS S.A. basically, there was no documentation other than paper. The implementation of the CAD program was under way. Today, PLM and PDM systems (Product Lifecycle Management and Product Design Management) enable significant improvement in production management, including synthesis, flow, updating of technological documentation – as one of…
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Workpiece – the object of work, which after the technological process has been completed, after all the provided treatments have been completed (change of shape, dimensions, surface and material properties) is the final product (part, machine or device). Workpieces are manufactured using various methods depending on the production volume. The blank is identified with the…
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