Abstract In order to improve the cutting performance in broaching, lubrication and cleaning effects offered by water-based fluids with green additives need be studied from viewpoint of manufacturing. Therefore, solutions castor oil, surfactant (linear alkylbenzene sulfonate, LAS), nanographite were prepared ultrasonic agitation sprayed into zone broaching via atomization. The performances fluids, terms viscosity, specific heat, wetting angle, droplet size, evaluated discuss their on load....

Tool wear is a crucial factor in machining as it directly impacts surface quality and indirectly decreases efficiency, which leads to significant economic losses. Hence, monitoring tool state of the utmost importance for achieving high performance efficient machining. Although using single sensor has been validated laboratory settings, certain drawbacks such limited feature information acquisition inability learn important features adaptively. These limitations pose challenges quickly...

The surface quality of milled blade-root grooves in industrial turbine blades significantly influences their mechanical properties. texture reveals the interaction between tool and workpiece during machining process, which plays a key role determining quality. In addition, there is significant correlation acoustic vibration signals features. However, current research on still relatively limited, most considers only single signal. this paper, 160 sets field data were collected by multiple...

Due to the increasing train axle load, running speed and traffic volume, rails are prone severe rolling contact fatigue (RCF) defects. Repairing rail profile by milling is latest technology solve above hidden problems, but there few related studies in recent years. In this paper, maintenance process of studied using finite element method(FEM). This study examines fracture behavior U71Mn steel under various stress triaxiality conditions, temperatures, strain rates. An electronic universal...

In order to investigate sawing dynamics on band machine, a general dynamic model is proposed represent the actual system with of strain saw, mechanism hydraulic motor proportional valve and load sawing. Firstly, an element saw along arc coordinate established elastic deformation theory closed momentum theorem load. Then, relationship between control input, tension addressed valve. The results simulations experiments show can effectively describe process. This provides useful way improve

Natural cortical bone is an important source of bionic repair materials. Sawing the first and process in fabrication However, high sawing temperature could cause damage to tissue nerves, surface roughness should decrease osteoinductivity. In order improve cutting performance during bone, quality prepared slices, band be investigated improved. this paper, novel experiment was designed with different feed rate tooth pitch. Then, influence experimental parameters on were analyzed Analysis...

In order to improve the keyway broaching process and verify feasibility of vibration-assisted process, an experimental study on a novel hydraulic vibration assisted (HVAB) system with double-valve electro-hydraulic exciter (DVEHE) is proposed in this paper. The performances HVAB at different excitation frequencies were compared from three aspects: (a) cutting force under frequencies, (b) surface roughness workpiece, (c) flank face wear tool. For precision on-line measurement larger forces,...

This paper presents a smart sliding Chinese pinyin Input Method Editor (IME) for touchscreen devices which allows user finger from one key to another on the instead of tapping keys by one, while target character sequence will be predicted during process help input characters efficiently. Moreover, layout virtual keyboard our IME adapts more efficient inputting. The adaption is utilized with Recurrent Neural Networks (RNN) and deep reinforcement learning. pinyin-to-character converter...

Abstract The broaching tool is an efficient and precisely heavy-loaded metal-cutting tool, widely used in the mass production of key components related to aerospace automobile industries. However, heavy load, intense squeezing, friction tool-chip contact area prevent cutting fluid from entering desired location. Consequently, insufficient lubrication gives rise a high-temperature built-up edge, thereby lowering machining accuracy efficiency. To reduce frictional force, three textures (i.e.,...

Abstract Complex profile broaches are widely used in the manufacture of complex parts aero-engines, but their cutting forces broaching process difficult to predict and control. A new numerical model for force with tools is presented, which considers area arc length curved shear zone projection. The were calculated by curve function projection plane, firstly predicted FEM simulation. Compared conventional model, accuracy modified has been moderately improved. Ultimately, main (Y-direction)...

Generating topological microstructures on the surface of cortical bone to establish a suitable microenvironment can guide cells achieve repair. Single-point diamond tools (SPDTs) have advantages in efficiency and flexibility fabricate microstructures. However, cutting force during ploughing cannot be predicted controlled due special properties bone. In this paper, novel model for using an SPDT was established, we comprehensively considered shear stress anisotropy material proportional...