اتصل

هاتف

+0086-371-86162511

عنوان

تشنغتشو ، الصين

البريد الإلكتروني

[email protected]

maximum length of workpiece in grinding

Temperatures in deep grinding of finite workpieces

Using a new thermal model of circular arc contact with transient analysis, the transient behaviour of the maximum contact temperature has been analysed for various grinding conditions. It is found that steady state conditions can be achieved for the When the surface grinding temperature reaches its maximum, the thermal stress on the workpiece surface also reaches a maximum. If the thermal stress is lower than the Effect of different parameters on grinding efficiency and

احصل على السعر

Grinding (Machining) an overview ScienceDirect Topics

The maximum grinding power in steady grinding after subtracting the no-load power and the power required to accelerate the grinding fluid has a mean value The cutting force is mainly analyzed from the aspects of workpiece material, abrasive, cutting parameters, tool wear. The hardness and strength of the Mechanical behavior and modeling of grinding force: A

احصل على السعر

Temperatures in deep grinding of finite workpieces ScienceDirect

The lost grinding power reaches the maximum value when v s is 140 m/s, which accounts for about 55%–65% of the total grinding power; however, the minimum The present disclosure relates to a grinding method for grinding of non-circular workpieces with an improved productivity and quality of the resulting workpiece. The method Method of grinding a workpiece and method for determining

احصل على السعر

A Study on Calculating Grinding Temperature SpringerLink

This paper introduces a study on calculation of the temperature in external grinding process. In the paper, based on the theory of grinding process, the The ratio will be even greater for the processing of parts that have a smaller width. For example, for an object with a width of b p = 10 mm, the maximum length of the grinding path L max will be about 160 Materials Free Full-Text Modeling and Analysis of

احصل على السعر

Model Based on an Effective Material-Removal Rate to Evaluate

Consequently, this study develops a model of material-removal rate to estimate specific energy consumption based on the measurement of active power consumed in a plane Ding et al. [52] found that the strain rate can be calculated by dividing the wheel speed with the workpiece length in the grinding process, which can be expressed as: (57) ε = v s l s where l s is the workpiece length, which is related to the grinding wheel type, topology, processing parameters, and workpiece material.Models of grinding-induced surface and subsurface

احصل على السعر

Effects of high power ultrasonic vibration on ScienceDirect

The transducer has been designed and manufactured to be longitudinally vibrated at about 25 kHz.For the purpose of having the best acoustic matching between the workpiece and the transducer, the resonance frequency of the workpiece should be near 25 kHz.Although, the transducer has a capacity of 3 kW acoustic power generation and Workpiece Surface Hardness as an Indicator of Process Regime in Peripheral Electrochemical Grinding 91 machining and subsequent to machining. The main purpose of the tests with AISI 01 material was the determination of residual stress distribution. Therefore, surface preparations, such as polishing, were avoided so5–4 Workpiece Surface Hardness as an Indicator of Process

احصل على السعر

Analytical grinding force prediction with random abrasive grains

The grinding experiment was conducted with a single diamond tool on copper using a Mori Seiki Multi-Axis Turning centre MT 2000a1 SZ with the following conditions: grinding depth a p = 0.185 mm and distance from the centre to the tip of the diamond tool was 17.7 mm that were determined by the geometry of the diamond tool, Abstract. This paper introduces a study on calculation of the temperature in external grinding process. In the paper, based on the theory of grinding process, the relationship among grinding temperature of workpiece and cutting parameters, grinding wheel parameters, workpiece parameterswas presented. This relationship is used to A Study on Calculating Grinding Temperature SpringerLink

احصل على السعر

Temperatures in deep grinding of finite workpieces

The angle ϕi varies from 0 to 2 ϕ, the mean value of ϕi is ϕ. An individual line source, d li at point F ( x′i, z′i) moves with velocity, v. The arc length of BF is li. The temperature rise at a point M ( x ′, z ′) in the workpiece, is influenced by the moving line source of width, d li at point F.In Figure 4 b, for a fixed cutting depth and speed of the grinding tool, the increase of Vf increases the line spacing between the polishing tracks, and the number of passes of the grinding tool decreases per unit length. Thus, the residual height of the workpiece surface increases and the material removal rate decreases .Mechanism and Parameter Optimization in Grinding and

احصل على السعر

Tribological Mechanism of Graphene and Ionic Liquid Mixed Fluid

where l c is the length of grinding zone, and can be obtained from l c = (a e d s) 1/2, d s is the diameter of grinding wheel, k w is the workpiece thermal conductivity, β indicates a constant and its value depends on the heat source profile, for triangular heat source its value is 1.06, α w is the thermal diffusivity of workpiece, and can be In the formula, v s is the wheel speed, v w is the feed rate, a p is the grinding depth, d eq is the diameter of the grinding wheel, and λ s is the perimeter of the grinding wheel. 2.2 Plastic mechanism of subsurface. During the grinding process, the workpiece is subject to the tangential force exerted by the abrasive particles, often Plastic deformation mechanism of grinding subsurface of nickel

احصل على السعر

S33 UNITED GRINDING

The new wheelhead with two motor spindles enables grinding of even more complex workpiece geometries in a single clamping. Workpiece Length 400 mm Workpiece Diameter (25.6") / 1000mm (40") and a centre height of 175mm (6.8"). It can machine workpieces with a maximum weight of 80kg (176lbs) / 120kg (264lbs). Details Contact Ch 10 grinding and finishing. 1. Grinding & Finishing By S K Mondal ; 2. Process Features Grinding Uses wheels, accurate sizing, finishing, low MRR; can be done at high speeds . Creep feed grinding Ch 10 grinding and finishing PPT SlideShare

احصل على السعر

Effect of the workpiece material on the heat affected zones during

The isothermal bands inside the workpiece and the isothermal lines in the region underneath the grinding wheel, the place where the maximum temperature appears is clearly shown. Fig. 2a,b The temperature fields developed when grinding 100Cr6 steel at 7th time step for a depth of cut a 0.02 mm b 0.05 mmThe problem of eliminating edge-chipping at the entrance and exit of the hole while drilling brittle materials is still a challenging task in different industries. Grinding-aided electrochemical discharge machining (G-ECDM) is a promising technology for drilling advanced hard-to-machine ceramics, glass, composites, and other brittle materials. Edge Effect of machining parameters on edge-chipping during drilling

احصل على السعر

A review on minimum quantity lubrication technique Springer

Various elements of grinding tribology are grinding wheel, workpiece, with traditional servo-cut oil and using it to machine AISI 4340 steel with dimensions of 100 mm diameter and 500 mm length. a systematic selection of machining parameters is required to get the maximum machining efficiency. (3)The real contact arc length is proposed by Rowe et al. [13], [38], [39] through incorporating the effect of grinding depth with the elastic deflection. As presented in Fig.8, due to AAG' variable(PDF) The Real Contact Length in Grinding Based on Depth of

احصل على السعر

Simulation and experiment of electroplated grinding wheel with

The micro-grooves are 1.5 mm in depth, 0.1 mm in width, and 0.98 mm in interval. The length of a grinding units is 0.88 mm and a total of 450 micro-grooves is insulated by a thin mica film are mounted in a pre-machined slot in the center of the workpiece. The maximum workpiece speed is 6 m/min, and the totalFor grinding marks would reduce the surface quality and surface strength and influence the friction performance of workpiece [31, 41,42,43,44,45], relevant researches on the affecting factors of grinding marks have been carried out by many scholars, which would provide scientific research basis for the optimization and control of Affecting factors, optimization, and suppression of grinding

احصل على السعر

Grinding temperature and power consumption in high speed grinding

Down-grinding at a fixed depth of cut (a p = 0.1 mm) is chosen in all the grinding trials.The wheel speed v s is varied from 20 to 140 m/s, and the workpiece infeed speed v w is ranged from 120 to 300 mm/min. Particularly, the wheel speeds of 20 and 50 m/s are chosen for the conventional speed grinding, while those of 80, 100, 120 and The kinematic model of double side grinding is shown in Fig. 2. XOY is the fixed coordinate system with the center of the grinding wheel as the origin.xoy is the dynamic coordinate system with the center of the workpiece as the origin.e represents the center distance between the wheel and the workpiece.r is the radius of the workpiece. Study on surface material removal uniformity in double side grinding

احصل على السعر

Assessment of advanced process configurations for improving workpiece

Plunge grinding experiments (in down grinding mode) comprising varying abrasive size, workpiece tilt angle and tool ultrasonic actuation were carried out based on a full factorial design (total of 12 tests) with the factor levels detailed in Table 1.Schematics of the process configuration at workpiece tilt angles of 0° and 30° are shown in Fig. 1 b

احصل على السعر

<< Previous:معالجة المعادن Epc Hydrocyclone في شمال ايرلندا
>> Next:كيفية تثبيت طاحونة حجر

حقوق النشر © 2004-2020 بواسطة China Liming Heavy Industry Science and Technology Co.Ltd. جميع الحقوق محفوظة