Cleaning Machine Research Articles

Measurement and machinability study under environmentally conscious spray impingement cooling assisted machining

Environmentally conscious machining evolved as the new concept due to strict environmental regulations and to minimize the hazardous effect on health and environment. Therefore, the present study reports on wear behavior through machinability on hardened AISI D2 steel (55 ± 1 HRC) using coated carbide cutting insert under cleaner machining approach i.e. spray impingement cooling which is being rarely investigated. Wear at flank surface and roughness of machined workpiece surface are much below of 0.2 mm and 1.6 µm respectively with cutting temperatures lies between 120.4 °C and 217 °C which shows advantage of compressed air-water spray cooling. Saw tooth shapes of chip produced due to cyclic cracking. At parametric setting of 0.1 mm depth of cut, 0.04 mm/rev feed rate and 108 m/min cutting speed with air pressure 1.5 bar and water pressure of 1 bar, tool life is 105 min with abrasive, chipping and notching are the major form of tool wear. Machined chip volume of 45.36 cm3 justified as effective and economical hard turning with regression models statistical significant. As a result of the high latent heat absorbed by the water droplets during evaporation through spray impingement cooling, cutting temperature is reduced and thus reduces evolution of tool wear and induced stable and environment friendly cleaner machining. Thus application of spray impingement cooling reduces tool wear, cutting temperature and produced good surface quality that is most acceptable in industrial applications and find itself a new avenue for study on hard turning.

Assessment of autoflush machine for cleaning of toilet area/elimination area in weaner pen

An attempt was made to develop auto-flush machine for cleaning of toilet area/elimination area. To study the auto-flush system, a total of 10 weaners were divided into two groups (having 5 each), viz. G1 (weaners kept in a modified intensive pen with auto flush system) and G2 (weaners in intensive pen without auto-flush). The defecation pattern/trend was observed 24 h consecutively for 5 days. Each weaner defecated 8.40±0.23 and 8.92±0.13 times per day in G1 and G2 respectively. The auto-flush was assessed indirectly based on parameters like hygiene score of floor, hygiene score of animals, amount of water consumed and manpower required for cleaning of pen in 5 days. Hygiene score of floor was higher in G1 (143±0.63) compare to G2 (112.2±1.7). Hygiene score of animals was higher in G1 (5) compared to G2 (2.6). Water consumed for cleaning was lower in G1 (162.8±9.06 litres) than G2 (212±1.4 liters). Manpower requirement in G1 (7.85±0.24 sec) was lower than G2 (175.48±2.11 sec). It can be concluded that all weaners used the elimination area for defecation in G1. The auto-flush system helped in saving water, labour time and maintained the cleanliness of both floor and animal.

Multi-objective optimization and life cycle assessment of eco-friendly cryogenic N2 assisted turning of Ti-6Al-4V

Modern manufacturing industries thrive for energy efficient, clean and sustainable machining processes. However, achieving these objectives becomes difficult especially in machining Ti-6Al-4V as it retains its properties at high temperature. Cryogenic liquid nitrogen (LN2) is a clean machining environment that has potential to improve the machinability performance for Ti-6Al-4V. LN2 promotes sustainability and facilitates low carbon emission. Orientation and number of employed LN2 jets influence the cutting energy, quality and productivity. Moreover, a balance between energy consumption and quality-productivity is required for sustainable production. In this respect, this research work studies the cutting force, specific energy, temperature, surface quality (i.e. surface roughness), and material removal rate under the impingement of LN2 as mono-jet and dual-jets. This study has three parts: evaluation of the role of factors on the output parameters, optimization of parameters, and lastly the life cycle assessment (LCA) of cryogenic LN2 assisted machining. Owing to irreconcilable nature of single-objective optimization, multi-response optimization was conducted using Grey-Taguchi integrated approach. It was found that LN2 dual-jets were most effective in reducing the specific energy consumption and temperature, and improving surface quality. This can be attributed to the faster and effective heat removal by LN2 from the critical interfaces. Other optimum parameters were cutting speed of 140 m/min and feed rate of 0.16 mm/rev. It was found that LCA showed that there is a clear relation between cooling strategy and environmental aspects such as resources, energy, human health, and biodiversity, etc. that directly affects the machining performance of Ti-6Al-4V alloy.

Self-Maintaining Cleaning Machines

Self-Maintaining Cleaning Machines

Productivity Enhancement by Implementing Automatic Burr Cleaning Machine in Lathes

In the era of modernization and complete automation, industries employ manual cleaning operation which is highly time-consuming and man power requirements are high. To overcome this situation an automatic cleaning machine which can be employed to overcome the above stated obstacles by means of a completely automated cleaning system universally for different categories of machines based on the duties and classes of performance respectively.The main objective of this project is to develop a universal cleaning system which is used to completely clean the wastes which falls in between the machinery and at its collection spots such as hoppers, beds, plates, floors etc., where it cleans in all places where human hands cannot reach and cleaning operation considered not possible. The major advantage of machines are that they much more precise in doing the work than considered to a human or manual labor

The Graphic - Marine cleaning machine

The Graphic - Marine cleaning machine

Free-field reciprocity calibration of measurement microphones at frequencies up to 150 kHz.

Microphones are typically calibrated in a free field at frequencies up to 40 kHz using primary and secondary methods. This upper frequency is sufficiently high as to cover most sound measurement applications related with airborne noise assessment. However, other applications such as measurement of noise emitted by ultrasound cleaning machines, failure detection in aeronautic structures, and the investigation of the perception mechanisms of ultrasound may require that the sensitivity of the microphone is known at frequencies up to 150 kHz. In any of these applications, it is critical to establish a well-defined traceability chain to SI units to support any measurement result. In order to extend the frequency range of absolute free-field calibration, typical reciprocity measurement systems and measurement methods must undergo a series of changes and adaptations which may include using other types of microphones rather than laboratory standard microphones, changing the type of measurement signal, improving the methods for eliminating unwanted reflections from walls, cross-talk, distortion, etc. Herein, a strategy for the changes and adaptations to the existing measurement methodologies, and the determination of the microphone parameters is outlined, the results of its implementation are discussed, and calibrations results are presented and discussed.

Environmentally Friendly Laser Cleaning Machine

Environmentally Friendly Laser Cleaning Machine

Change in Quality Parameters of Hulled Oats Grain at Fractionation

The changes in the main indices for grain quality of hulled oats at fractionation for the development of the method for their regulation were studied. It was shown that the grains of various fractions of hulled oats is not equal by biochemical composition and technological qualities. Fractionation of the grain samples collected from homogeneous large batches of oats and carrying out of corresponding analyses allowed the determination of a broad range of quality indices of individual fractions and their dependence on the thickness of the caryopsis. Then, by the correct selection and installation of top and (or) bottom sieves on seed cleaning machines of secondary cleaning, one can change (increase or decrease) the basic quality indices of a batch of grain from hulled oats up to values regulated by the State Standard or standards demanded by the consumer.

Design & Fabrication of Water Tank Cleaning Machine

Design & Fabrication of Water Tank Cleaning Machine

Design and Fabrication of Multipurpose Eco-Friendly Cleaning Machine

Design and Fabrication of Multipurpose Eco-Friendly Cleaning Machine

EI-105 - Validation Study for Automated Cleaning System Effectiveness

Background: Wheelchairs and other healthcare items have increased bioburden due to daily use and inadequate cleaning. Manual cleaning of healthcare items is time consuming and yields inconsistent outcomes. The study objective is to evaluate the benefits of an automated cleaning system for removal of bioburden and time management. Hypothesis: An automated cleaning machine will clean items in less time with better removal of bioburden based on testing.

Тенденции развития воздушно-решетных зерноочистительных машин на современном этапе

The article provides the results of the analysis of designs and the process of work of air screen grain cleaners by leading Russian companies OAO “Zernoochistka”, OAO “Melinvest”, OAO “Voronezhselmash”, “Romax” plant, OOO “Oskolselmash “, FSUE North-East, “Tekhnograd” enterprise (Perm Krai), FSAC VIM, FARC North-East; and foreign companies “Petkus”, “Happle”, “Buhler”(Germany), “Denis”(France), “Westrup”, “Qmbria” (Denmark), “Buhler Scmidt-Seeger” (Switzerland). The main directions of improving grain cleaners are increased productivity up to 200 - 250 t / h and more, improved quality of grain cleaning, extended functional capabilities, reduced energy and metal consumption. Increased productivity is achieved by enlarged width of the working part and of the area of grading and seed sieves, by raising the fan performance and applying cleaning with division into fractions by fly speed and particle size. Improving the quality of grain cleaning is provided by improving the process and working bodies, application of cross-flow fans and feed devices of the active type, use of pneumatic separating channels of preliminary and main cleaning. Expansion of functionality is provided by the creation of grain cleaning machines for operation in the pre-and primary treatment modes of cleaning, primary and secondary treatment modes, universal grain cleaning machines for preliminary, primary and secondary cleaning. Gravity air screen cleaners, grain cleaners with closed and closed-open air systems with integral cross-flow fans and inertial dust collectors have low energy and metal consumption. The results of the study can be useful for researchers and designers in the development of new grain cleaning machines.

ДОСЛІДЖЕННЯ ЕНЕРГОЄМНОСТІ ПРОЦЕСУ ОЧИЩЕННЯ ЗЕРНА НА ЗЕРНООЧИСНИХ МАШИНАХ

ДОСЛІДЖЕННЯ ЕНЕРГОЄМНОСТІ ПРОЦЕСУ ОЧИЩЕННЯ ЗЕРНА НА ЗЕРНООЧИСНИХ МАШИНАХ

A study on absolute pressure measurement of ultrasonic cleaning machine using fiber optical probe hydrophone under cavitation

A study on absolute pressure measurement of ultrasonic cleaning machine using fiber optical probe hydrophone under cavitation

The development of lab-on-a-chip fabricated from two molds

Development of diagnostic technique of microfluidic or lab-on-a-chip (LOCs) is currently of great interest for researchers and inventors for their many advantages. It can be used as a real laboratory was many ways to help to the diagnosis faster. This research aims to develop Polydimethylsiloxane (PDMS) lab-on-a-chip (LOCs) which were produced from different molds; the silicon wafer mold and the stainless mold to investigate the flow of the biological sample as the flow in nanochannels. In addition, this research proposes a means to leakage and the blockage of the channel flow. The experimental results were found that the LOCs casted from the silicon wafer mold sandwiched by both the plasma cleaner machine and H shaped acrylic sheets showed leakages around the electrode areas because the first new electrodes were too thick, the proper thickness of the nickel electrode was at 0.05 millimeters. The LOCs casted from the stainless mold were inserted by the nickel electrodes produced by the from the prototype shaped electroplating process; this LOCs using nickel plated electrodes 2 times to make a groove on the nickel electrode backsides when pouring the PDMS into the LOCs casted from the stainless mold. It was found that PDMS was able to flow under the nickel electrode and the PDMS sheet could stick with the glass slide smoothly. In conclusion, it was possible to develop these LOC designs and new electrode fabrications continually under helps from Micro-Electro-Mechanical system, Thailand National Electronics and Computer Technology Center, since causes of the LOC problems were found, and demonstrated the feasibility of developing the LOCs for chemical detection and disease diagnostics.

Plunge cylindrical grinding with the minimum quantity lubrication coolant technique assisted with wheel cleaning system

MQL technique is considered as a cleaner machining compared to the conventional coolant delivery one, thereby ensuring environmental sustainability and economic benefits. However, one of problems commonly reported when using the MQL technique is the wheel clogging phenomenon as a result of the inefficient chip removal from the cutting zone, then the chips lodge inside the pores of the grinding wheel, adversely affecting the quality and the finishing of the final product. In this context, this study was carried out to evaluate the performance of the minimum quantity lubrication coolant technique assisted with a wheel cleaning jet (MQL + WCJ) in plunge grinding of hardened steel. This cooling-lubrication technique was tested using the following flow rates: 30, 60, and 120 ml/h. Comparative tests were also carried out with the conventional coolant technique, as well as with the traditional MQL technique (without the wheel cleaning jet). The output variables used to assess the efficiency of the MQL + WCJ technique are roughness, roundness, workpiece microhardness, grinding wheel wear, and power consumption. The results showed that the machining with the MQL + WCJ technique outperformed the traditional MQL technique in all the output parameters investigated. Also, the efficiency of the MQL + WCJ technique increased with flow rate, thereby being an alternative coolant delivery technique in grinding due to cleaner environment, more sustainable and lower consumption of fluid compared to conventional coolant one. No thermal damages and cracks on the machined surface and sub-surfaces were observed after grinding AISI 4340 steel, irrespective of the technique.

Design and development of automatic shoe cleaning and polishing machine with liquid spraying shoe ink

Design and development of automatic shoe cleaning and polishing machine with liquid spraying shoe ink

Design of Electronic Control System for Robot Cleaning Machine Based on Profibus-DP

Introduces the composition of industrial cleaning robot and the main control function based on the key signal between ABB robot and SIEMENS PLC S7-300, given the Profibus-DP communication programming of the robot and PLC, finally through the flow chart of industrial washing machine work cycle are described, the main program logic robot and motion control using ABB robot Rapid language. The research and development of the electronic control system can improve the degree of automation and production efficiency.

Change in quality parameters for brewing barley grain at fractionation

The change in the main quality parameters for brewing barley grain at fractionation has been studied to develop the method of their regulation. The barley grain of different fractions is proven unequal in the biochemical composition and the technological quality. The fractionation of the grain samples collected from the large homogenous grain bulks and the relevant analyses can provide the possibility to determine a wide range of quality parameters for the specific fractions and their grain-size dependencies. The basic parameters for the technological quality of barley grain in a certain bulk may be changed (raised or lowered) to the regulatory standards or the standards that consumers demand with the use of the appropriate top and (or) bottom sieve installation in the grain cleaning machines of secondary cleaning.